Search Results — 2000 specimen records retrieved (752 records with coordinates)
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Results for search: County=CONTRA COSTA; Source=All; Collector=Ertter;   

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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CDA2311  Phyllostachys aurea Barbara Ertter 2001-5-26 17652 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch. 0 Comment
  CDA2696  Juncus gerardi Barbara Ertter, S. Matson 2003-5-31 18175 Contra Costa Carquinez Strait; Martinez Regional Shoreline along Pickleweed Trail west of Arch Bridge. 0 Comment
  CHSC106696  Potamogeton filiformis Barbara Ertter; Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10715 Contra Costa Browns Island N of Pittsburg near confluence of Sacramento and San Joaquin rivers opposite Pittsburg Marina. Tangled masses in water at W end of island. Comment
  CHSC106698  Najas guadalupensis Barbara Ertter; Brad Olson 1991-9-28 10838 Contra Costa San Pablo Reservoir between Orinda and El Sobrante, in shallow water at S end of reservoir. 91 Comment
  CHSC106700  Potamogeton diversifolius Barbara Ertter; Brad Olson 1991-9-28 10839 Contra Costa San Pablo Reservoir between Orinda and El Sobrante, in shallow water at S end of reservoir. 91 Comment
  CHSC106711  Lasthenia glabrata subsp. glabrata Barbara Ertter; Chris Thayer 1991-6-16 11705 Contra Costa ca. 1/2 mile north of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land east of Tilden Park, perennial grassland above oak stringer, just below right on NE-facing slope. 457 Comment
  CHSC106715  Plantago erecta Barbara Ertter; Jim Jokerst, Dave Magney 1989-4-5 8141 Contra Costa Alkali sink W and adjacent to CLifton Forebay, ca 15 air miles SW of Stockton, near sea level. Comment
  CHSC106838  Plagiobothrys leptocladus Barbara Ertter; Jim Jokerst, Dave Magney 1989-4-5 8129 Contra Costa SE part of county. Ca 15 air miles SW of Stockton, alkali sink W and adjacent to Clifton Court Forebay. Comment
  CHSC106840  Plagiobothrys stipitatus var. micranthus Barbara Ertter; Jim Jokerst, Dave Magney 1989-4-5 8126 Contra Costa SE part of county. Ca 15 air miles SW of Stockton, alkali sink W and adjacent to Clifton Court Forebay. Comment
  CHSC106844  Limnanthes douglasii var. rosea Barbara Ertter; Jim Jokerst, Dave Magney 1989-4-5 8115 Contra Costa SE part of county. Ca 15 air miles SW of Stockton, alkali sink W and adjacent to Clifton Court Forebay. Comment
  CHSC111020  Carex pendula Barbara Ertter; David Gowen 2010-11-17 20699 Contra Costa Southeast part of Lime Ridge Open Space (City of Walnut Creek), lower end of east-facing drainage below Crystyl Ranch Trail ca 1/4 m N of Paraiso Trail, 37.927 deg. N 121.979 deg. W ca. 180 m (also in spring area in mid drainage, 37.927 deg. N 121.981 deg. W, ca 195 m). 180 Comment
  CHSC83198  Quercus garryana B. Ertter; M. Bowerman, E. Dean, J. Tucker, J. Kerbavaz 2000-9-13 654 Contra Costa Mount Diablo State park, Fossil Ridge, just upslope of South Gate Rd., just west of Gibraltar Rock, southeast of Rock City. 487 Comment
  JEPS102890  Datura wrightii Barbara Ertter with Tony Morosco 1998-10-18 16435 Contra Costa Lime Ridge Recreaton Area, NE corner Mount Diablo 182 Comment
  JEPS102891  Calochortus argillosus Barbara Ertter with Dan Norris 1998-6-18 16209 Contra Costa South Gate Road ca 1 mi from entrance Mount Diablo 304 Comment
  JEPS102892  Trisetum canescens Barbara Ertter with Susan D'Alcamo 1998-6-12 16203 Contra Costa upper Curry Canon halfway between Knobcone Point Road and Sheepherder Springs Road Mount Diablo 487 Comment
  JEPS102893  Eriogonum covilleanum Barbara Ertter with Susan D'Alcamo 1998-6-12 16166 Contra Costa Devils Elbow trail SE of summit, not far from trailhead Mount Diablo 1036 Comment
  JEPS102896  Dodecatheon clevelandii subsp. patulum Barbara Ertter 1998-2-15 15918 Contra Costa Haystack Hill N of Borges Ranch Mount Diablo, Shell Ridge Recreation Area Comment
  JEPS102897  Narcissus tazetta Barbara Ertter 1998-1-25 15910 Contra Costa Back Canyon Road at crossroad S of Donner Canyon trailhead Mount Diablo Comment
  JEPS102899  Mentha spicata Barbara Ertter with Mary Bowerman 1996-11-21 15394 Contra Costa downstream from Mitchell Canyon trailhead Mount Diablo 182 Comment
  JEPS102900  Distichlis spicata Barbara Ertter, Chris Thayer 1996-10-25 15369 Contra Costa North Gate Road Mount Diablo 121 Comment
  JEPS102901  Crypsis schoenoides Barbara Ertter, Chris Thayer 1996-10-25 15360 Contra Costa Little Pine Creek, Diablo Foothills Regional Park Mount Diablo Comment
  JEPS102902  Delairea odorata Barbara Ertter, Chris Thayer 1996-10-25 15358 Contra Costa Little Pine Creek, Diablo Foothills Regional Park Mount Diablo Comment
  JEPS102903  Campanula griffinii Barbara Ertter with M. L. Bowerman, L. Schultheis & K. Hintsa 1995-10-22 14535 Contra Costa road junction of Three Springs trail on NE side of mountain Mount Diablo 365 Comment
  JEPS102906  Calochortus albus Barbara Ertter with John Ginochio 2002-6-1 17938 Contra Costa Arroyo del Cerro on NW side of mountain, above connector road between Government Road and Olofson Homestead Mount Diablo Comment
  JEPS102907  Balsamorhiza deltoidea Barbara Ertter with Holly Forbes 1997-4-20 15564 Contra Costa NE base of Eagle Ridge, Back Creek Trail to Coulter Pine Trail Mount Diablo 213 Comment
  JEPS102909  Eriogonum roseum Barbara Ertter with Tony Morosco 1998-10-18 16436 Contra Costa NE corner of Lime Ridge recreation Area Mount Diablo 182 Comment
  JEPS102915  Eriogonum roseum Barbara Ertter with Tony Morosco 1998-10-18 16436 Contra Costa NE corner of Lime Ridge recreation Area Mount Diablo 182 Comment
  JEPS102916  Calochortus argillosus Barbara Ertter with Dan Norris 1998-6-18 16209 Contra Costa South Gate Road ca 1 mi from entrance Mount Diablo 304 Comment
  JEPS102917  Juncus phaeocephalus var. paniculatus Barbara Ertter 1998-5-3 16061 Contra Costa wet meadow below Stage Road SE of Turtle Rock Ponds; Mount Diablo 304 Comment
  JEPS102918  Narcissus tazetta Barbara Ertter 1998-1-25 15910 Contra Costa so of Donner Canyon trailhead (Back Canyon Rd.); Mount Diablo Comment
  JEPS105747  Erodium macrophyllum Barbara Ertter with David Gowen, Mike Park, Wilde Legard 2004-4-13 18346 Contra Costa Black Diamond Mines Regional Preserve, WSW-facing slope above water tank E of River View Loop Trail, over saddle E of park headquarters at Sidney Flat 182 Comment
  JEPS106432  Acacia retinodes Barbara Ertter with Richard Rabeler 1994-6-2 12820 Contra Costa edge of San Francisco Bay on overgrown point south of Central Avenue at Point Isabel (subsequently cleared as part of new Eastshore State Park). Comment
  JEPS107067  Trifolium depauperatum var. truncatum Barbara Ertter, Chris Thayer 1995-4-25 13998 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd. on north side Black Hawk Ridge. 548 Comment
  JEPS107069  Camissonia intermedia Barbara Ertter, Chris Thayer 1995-4-25 13989 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Devil's Slide area of Sycamore Canyon, roadside through chaparral zone. 304 Comment
  JEPS107076  Lupinus formosus Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14674 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay Comment
  JEPS107077  Pogogyne serpylloides Barbara Ertter, Lisa Schultheis 1995-4-27 14017 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; head of west facing scrub-filled draw (east of golf-course). Comment
  JEPS107084  Rumex salicifolius var. crassus Barbara Ertter, Brad Olson 1994-5-7 12762 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge. Edge of San Francisco Bay. Comment
  JEPS107085  Phoradendron macrophyllum Barbara Ertter, Brad Olson, Diane Lake, Seth Adams, et al. 1994-9-11 13085 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton. Comment
  JEPS107086  Delphinium hesperium subsp. hesperium Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14242 Contra Costa South side Mount Diablo, near head of Curry Creek along road to Sheepherders Springs from Sloan Road. Comment
  JEPS107088  Lathyrus latifolius Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14671 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay, northwest corner of area. Comment
  JEPS107089  Eriogonum nudum var. auriculatum Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14675 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; grassland/scrub at northeast corner of area. Comment
  JEPS107090  Antirrhinum majus Barbara Ertter, Brad Olson 1994-5-7 12744 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  JEPS107094  Lycopus americanus Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10876 Contra Costa Dow Wetlands Preserve, just w. Antioch marina, e. end of marsh across from marina Comment
  JEPS107097  Lythrum californicum Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10695 Contra Costa Browns Island N of Pittsburg near confluence of Sacramento & San Joaquin rivers, opposite Pittsburg Marina, center of w. end of island Comment
  JEPS107105  Anthriscus caucalis Barbara Ertter, Lisa Schultheis 1995-4-27 14015 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; north-facing open brushy slope with scattered oaks along extension of Valley View road. 182 Comment
  JEPS107107  Festuca rubra Barbara Ertter, Brad Olson 1994-5-7 12752 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  JEPS107109  Echinochloa crus-galli Barbara Ertter, Kristin Ertter 1995-7-11 14486 Contra Costa West side of Mt Diablo; mudflat around inlet to Pine Pond. Comment
  JEPS107110  Stachys pycnantha Barbara Ertter, Kristin Ertter 1995-7-11 14484 Contra Costa West side of Mt Diablo SW of Walnut Creek; dense growth at lower end of Pine Pond, in sun. 182 Comment
  JEPS107117  Erodium brachycarpum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14044 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, grassy flat, roadside vegetation, clay substrate. Comment
  JEPS107121  Clarkia affinis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14224 Contra Costa Mt. Diablo, southeast of Walnut Creek, north of Curry Point 518 Comment
  JEPS107124  Trifolium albopurpureum var. olivaceum Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14225 Contra Costa Mt. Diablo southeast of Walnut Creek, serpentine knoll ca 1/2 air-mile north of Curry Point. 487 Comment
  JEPS107126  Vicia villosa subsp. varia Barbara Ertter, Mary Bowerman 1995-6-11 14250 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, at west base Mt. Diablo; near Indian Valley School entrance (planted Clarkia also present). 91 Comment
  JEPS107129  Trifolium microdon Barbara Ertter, Lisa Schultheis 1995-4-27 14008 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  JEPS107131  Ranunculus sceleratus Barbara Ertter, Kristin Ertter 1995-7-11 14485 Contra Costa West side of Mt Diablo SW of Walnut Creek; mudflat around inlet to Pine Pond. Comment
  JEPS107133  Eriophyllum staechadifolium Barbara Ertter, Brad Olson 1994-5-7 12759 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  JEPS113073  Viburnum rigidum Barbara Ertter 2001-10-29 17810 Contra Costa Tilden Regional Park, Selby Trail and Wildcat Gorge upstream from Lake Anza, understory of mixed forest. Occasional lax shrub to 2--3 m tall. Comment
  JEPS113074  Fumaria capreolata Barbara Ertter 1999-3-21 16486 Contra Costa Miller Knox Regional Park near Point Richmond, edge of old excavation into rock (southeast of Richmond Ramblers building). Comment
  JEPS120267  Calamintha sylvatica Barbara Ertter with David Gowen 2012-6-9 21019 Contra Costa lower Vollmer Peak Trail paralleling South Drive, southeastern Tilden Park in Berkeley Hills Comment
  JEPS120268  Triteleia laxa Barbara Ertter with David Gowen 2012-6-9 21020 Contra Costa Seaview Trail on morth side of Vollmer Peak, southeastern Tilden Park in Berkeley Hills Comment
  JEPS120270  Delphinium hesperium subsp. hesperium Barbara Ertter with David Gowen 2012-6-9 21022 Contra Costa at junction of Seaview Trail and road into EBMUD land north of Vollmer Peak, southeastern Tilden Park in Berkeley Hills Comment
  JEPS120271  Zeltnera muehlenbergii Barbara Ertter with David Gowen 2012-6-9 21024 Contra Costa junction of Seaview Trail and road into EBMUD land north of Vollmer Peak, southeastern Tilden Park in Berkeley Hills Comment
  JEPS120273  Salvia leucophylla Barbara Ertter with David Gowen 2012-6-9 21026 Contra Costa southeast of junction of Big Springs Trail and Seaview Trail, southeastern Tilden Park in Berkeley Hills Comment
Read comments
Mar 22 2018
  JEPS120274  Crepis bursifolia Barbara Ertter with David Gowen 2012-6-9 21027 Contra Costa south junction of Big Springs Trail with Seaview Trail, southeastern Tilden Park in Berkeley Hills Comment
  JEPS120275  Lychnis coronaria Barbara Ertter 2012-10-27 21293 Contra Costa entrance gate to Golf Course Trail in Tilden Regional Park 370 Comment
  JEPS120280  Rytidosperma racemosum Barbara Ertter with David Gowen 2012-6-9 21017 Contra Costa lower Vollmer Peak Trail paralleling South Drive, southeastern Tilden Park in Berkeley Hills Comment
  JEPS120287  Clinopodium vulgare Barbara Ertter with David Gowen 2012-9-20 21018 Contra Costa lower Vollmer Peak Trail paralleling South Drive, southeastern Tilden Park in Berkeley Hills, ca. midway along trail, wide spot in shade of bay and pine (same location as 20919) Comment
  JEPS120288  Vicia disperma Barbara Ertter with David Gowen 2012-6-9 21016 Contra Costa lower Vollmer Peak Trail paralleling South Drive, southeastern Tilden Park in Berkeley Hills Comment
  JEPS127664  Brodiaea terrestris subsp. terrestris Barbara Ertter with David Gowen and Michael Park 2017-5-2 22808 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127665  Phalaris paradoxa Barbara Ertter with David Gowen and Michael Park 2017-5-2 22809 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127666  Juncus ambiguus Barbara Ertter with David Gowen and Michael Park 2017-5-2 22810 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127668  Torilis nodosa Barbara Ertter with David Gowen and Michael Park 2017-5-2 22816 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127669  Plagiobothrys stipitatus var. micranthus Barbara Ertter with David Gowen and Michael Park 2017-5-2 22799 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127670  Triglochin scilloides Barbara Ertter with David Gowen and Michael Park 2017-5-2 22800 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127671  Parapholis incurva Barbara Ertter with David Gowen and Michael Park 2017-5-2 22801 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127672  Trifolium variegatum var. variegatum Barbara Ertter with David Gowen and Michael Park 2017-5-2 22804 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127673  Lasthenia gracilis Barbara Ertter with David Gowen and Michael Park 2017-5-2 22806 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127674  Plantago elongata Barbara Ertter with David Gowen and Michael Park 2017-5-2 22807 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127675  Allenrolfea occidentalis Barbara Ertter with David Gowen and Michael Park 2017-5-2 22815 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS127676  Downingia insignis Barbara Ertter with David Gowen and Michael Park 2017-5-2 22797 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS85834  Lasthenia ferrisiae Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8124 Contra Costa alkali sink w and adjacent to Clifton Court Forebay (ca 15 air mi sw of Stockton) Comment
  JEPS85854  Amaranthus deflexus Barbara Ertter with Elizabeth Neese 1988-10-15 7973 Contra Costa w I-580 (jct of Central Ave and Rydin Road, El Cerrito); El Cerrito Comment
  JEPS87899  Phacelia tanacetifolia Barbara Ertter 1991-5-5 9774 Contra Costa s of Pittsburg (above Nortonville Pass, Black Diamond Mines Regional Preserve, s side of Rose Hill); Black Diamond Mines Regional Preserve, Rose Hill 365 Comment
  JEPS87900  Collinsia sparsiflora var. collina Barbara Ertter, Brad Olson 1992-4-13 10951 Contra Costa e of Curry Point (Mount Diablo State Park, Knobcone Point Road); Mount Diablo State Park, Knobcone Point Road 518 Comment
  JEPS87901  Phoradendron villosum Barbara Ertter, Lynne Hosley 1992-8-29 11264 Contra Costa e Mt. Diablo (Morgan Territory Regional Preserve, along Condor Trail); Morgan Territory Regional Preserve Comment
  JEPS87902  Pectocarya pusilla Barbara Ertter, Lynne Hosley 1993-4-17 11508 Contra Costa ca. 10 air mi. n. Livermore (hills in lee of Mt. Diablo, e. side of open meadow along Blue Oak trail, Morgan Territory); Morgan Territory 609 Comment
  JEPS87903  Poa bulbosa Barbara Ertter, Lynne Hosley 1993-4-17 11507 Contra Costa ca. 10 air mi. n. Livermore (hills in lee of Mt. Diablo, e. side open meadow along Blue Oak trail, Morgan Territory); Morgan Territory 609 Comment
  JEPS87910  Asarum caudatum Barbara Ertter, Chris Thayer 1993-5-7 11698 Contra Costa on Wildcat Canyon Road Hopkins Spring 1/2 mi se Inspiration Point (East Bay Municipal Utilities District Land e of Tilden Park); e of Tilden Park, Hopkins Spring 304 Comment
  JEPS87911  Phragmites australis Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10707 Contra Costa n Pittsburg (near confluence of Sacramento and San Joaquin Rivers, opposite Pittsburg Marina, near w end of <Browns> Island); Browns Island Comment
  JEPS87926  Salpichroa origanifolia Barbara Ertter 1991-5-12 9818 Contra Costa sw corner El Cerrito (Point Isabel Regional Shoreline, near parking lot); San Francisco Bay, Point Isabel Regional Shoreline Comment
  JEPS87936  Navarretia squarrosa Barbara Ertter with Laura Fujii 1990-7-21 9398 Contra Costa w of Pleasant Hill (near junction of Briones Crest and Spengler trails); Briones Regional Park, Briones Hills 396 Comment
  JEPS87949  Cordylanthus pilosus subsp. pilosus Barbara Ertter, CNPS 1990-8-19 9623 Contra Costa above Cutter Cove (e side of s end of Briones Reservoir, n of Orinda, along Bear Creek Trail on EBMUD land); Briones Reservoir, Bear Creek Trail 213 Comment
  JEPS87954  Genista monspessulana Barbara Ertter 1991-5-12 9816 Contra Costa sw corner El Cerrito (Point Isabel Regional Shoreline, on San Francisco Bay); San Francisco Bay Comment
  JEPS87956  Acacia melanoxylon Barbara Ertter 1991-5-12 9815 Contra Costa in sw corner El Cerrito (Point Isabel Regional Shoreline, along old railroad right-of-way between bay and salicornia marsh); San Francisco Bay, Point Isabel Regional Shoreline Comment
  JEPS87970  Atriplex prostrata Barbara Ertter with Elizabeth Neese 1988-10-15 7979 Contra Costa in salicornia marsh w. of I-580 in El Cerrito (w side along Rydin Road n of Central Avenue; edge of roadbank and marsh) Comment
  JEPS87981  Eucrypta chrysanthemifolia Barbara Ertter 1991-6-1 10078 Contra Costa hills w Danville (e side of Wind Caves on Sycamore Trail to Devil's Hole); Las Trampas Regional Wilderness, Wind Caves 548 Comment
  JEPS87983  Asparagus asparagoides Barbara Ertter 1991-5-12 9817 Contra Costa sw corner El Cerrito (along old R.R. right-of-way between bay & salicornia marsh, Point Isabel Regional Shoreline, on San Francisco Bay); San Francisco Bay Comment
  JEPS87986  Lavatera cretica Barbara Ertter 1991-5-12 9813 Contra Costa sw corner El Cerrito (Point Isabel Regional Shoreline, on San Francisco Bay); San Francisco Bay, Point Isabel Regional Shoreline Comment
  JEPS88006  Plagiobothrys acanthocarpus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8117 Contra Costa ca. 15 air mi. s.w. Stockton (w. & adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  JEPS88008  Plagiobothrys stipitatus var. stipitatus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8120 Contra Costa ca. 15 air mi. s.w. Stockton (w. & adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  JEPS88009  Plagiobothrys leptocladus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8129 Contra Costa ca. 15 air miles s.w. Stockton (w. and adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  JEPS96225  Bidens laevis Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10873 Contra Costa just w Antioch marina (e end of marsh across from marina); Dow Wetlands Preserve Comment
  JEPS96229  Vicia sativa subsp. sativa Barbara Ertter 1993-4-2 11475 a Contra Costa w of Crockett (along railroad, base of n-facing bluffs at w wnd of Carquinez Strait, San Pablo Bay); San Pablo Bay, Carquinez Strait Comment
  JEPS96230  Agrostis avenacea Barbara Ertter, Brad Olson 1991-9-28 10831 Contra Costa San Pablo Reservoir between Orinda and El Sobrante (at s. end of reservoir); San Pablo Reservoir 91 Comment
  JEPS96231  Hypericum calycinum Barbara Ertter 1993-6-25 11907 Contra Costa 1/4 mi s of junction of Lomas Cantadas (1/4 mi s of Tilden miniature steam trains, Oakland-Berkeley Hills, Grizzly Peak Boulevard); Oakland-Berkeley Hills, Grizzly Peak Boulevard 487 Comment
  JEPS96244  Phoenix canariensis Barbara Ertter, Brad Olson 1993-10-30 12292 Contra Costa w of railroad tracks n of mouth of Pinole Creek (San Pablo Regional Shoreline); San Pablo Regional Shoreline Comment
  JEPS96251  Hydrocotyle verticillata Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10863 Contra Costa just w. Antioch marina (along levee at water's edge, accessed from marina, Dow Wetlands Preserve); Dow Wetlands Preserve Comment
  JEPS96252  Juncus lescurii Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10681 Contra Costa n Pittsburg (near confluence of Sacramento and San Joaquin Rivers opposite Pittsburg Marina, marsh at edge of lagoon in center of w end of island); Browns Island Comment
  JEPS96253  Juncus occidentalis Barbara Ertter, Brad Olson 1991-11-10 10887 Contra Costa Point San Pablo in extreme west Richmond, behind yacht harbor Point San Pablo; Richmond, Point San Pablo Comment
  NY785489  Lonicera japonica B. J. Ertter 1991-8-18 10694 Contra Costa Browns Island N of Pittsburg near confluence of Sacramento & San Joaquin rivers opposite Pittsburg Marina Comment
  OBI59407  Lupinus microcarpus var. densiflorus Barbara Ertter, Elizabeth Neese 1988-4-24 7450 Contra Costa Black Diamond Mines Regional Preserve SW of Antioch, N of E-W part of Black Diamond Trl Comment
  OBI72036  Najas guadalupensis Barbara Ertter, Brad Olson 1991-9-28 10838 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  OBI72118  Mentzelia affinis Barbara Ertter 1991-5-5 9773 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, S side of Rose Hill above Nortonville Pass 366 Comment
  RSA0026175  Crepis bursifolia Barbara Ertter, David Gowen 2012-6-9 21027 Contra Costa South junction of Big Springs Trail with Seaview Trail, southeastern Tilden Park in Berkeley Hills. Comment
  RSA0027889  Nicotiana quadrivalvis Barbara Ertter, David Gowen 2010-11-17 20698 Contra Costa Mangini acquisition (Save Mount Diablo) between Lime Ridge and Mount Zion. 200 Comment
  RSA0029279  Rumex salicifolius var. salicifolius Barbara J. Ertter, Tony Morosco 1996-7-27 15030 Contra Costa Mount Diablo State Park, Donner Creek ca. halfway between Regency Drive trailhead and old cabin site. 183 Comment
  RSA0031298  Puccinellia nuttalliana Barbara Ertter, Brad Olson 2000-6-2 17301 Contra Costa Brushy Peak Regional Preserve NE of Livermore, at south base of Brushy Peak. Comment
  RSA0031304  Asclepias californica Barbara Ertter 2000-5-14 17019 Contra Costa Donner Basin on north side of Mount Diablo, upper end of Falls Trail near junction of Cardinet Oaks Road. 427 Comment
  RSA0031305  Dichelostemma congestum Barbara Ertter 2000-5-14 17006 Contra Costa Donner Canyon on north side of Mount Diablo, SW end of Falls Trail between Middle Trail and Donner Creek crossing. 457 Comment
  RSA0031307  Clarkia purpurea Barbara Ertter 2000-5-14 16996 Contra Costa Lower Donner Canyon on north side of Mount Diablo, on Hetherington Trail. 274 Comment
  RSA0033764  Mollugo verticillata Barbara Ertter 2005-8-18 18635 Contra Costa SE side of San Pablo Reservoir in East Bay Hills, east of San Pablo Dam Road between San Pablo and Orinda, access between HQ and boat launching (reservoir way down this year while being drained for seismic work on dam). Comment
  RSA0033769  Trifolium tomentosum Barbara Ertter 1998-5-3 16063 Contra Costa Connector trail between Barbeque Terrace Road and Wall Point Road. 365 Comment
  RSA0033773  Lupinus microcarpus Barbara Ertter, Christopher Baysdorfer 1998-5-10 16120 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, quarry area on west side. Comment
  RSA0033774  Hainardia cylindrica Barbara Ertter, Christopher Baysdorfer 1998-5-10 16112 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, sandy roadbed of Ohlone Trail. Comment
  RSA0033775  Trifolium campestre Barbara Ertter, Richard K. Brummitt 1998-5-6 16095 Contra Costa Donner Canyon Trail near Regency Drive trailhead, north base of Mount Diablo. 182 Comment
  RSA0033776  Lupinus nanus Barbara Ertter, Richard K. Brummitt 1998-5-6 16093 Contra Costa Lower Donner Canyon on north base of Mount Diablo, Hetherington Trail upstream from Donner Cabin. Comment
  RSA0033843  Cardamine oligosperma Barbara Ertter 2000-3-30 16912 Contra Costa North side of Mount Diablo, Deer Flat at head of Mitchell Canyon. Comment
  RSA0033846  Agrostis exarata Barbara Ertter 1999-7-17 16763 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Rifle Range Road. Comment
  RSA0033847  Lepidium nitidum var. nitidum Barbara Ertter 2000-3-30 16922 Contra Costa North side of Mount Diablo, Bruce Lee Road between Back Canyon Trail and Coulter Pine Trail. Comment
  RSA0033849  Lepidium coronopus Barbara Ertter 1999-7-17 16762 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Rifle Range Road. Comment
  RSA0033850  Leucanthemum vulgare Barbara Ertter 1999-7-17 16761 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Rifle Range Road. Comment
  RSA0033851  Calystegia subacaulis Barbara Ertter 1999-7-17 16760 Contra Costa El Cerrito, west side of Arlington Ave. in small triangle of land between Moeser Ln. and Terrace Dr. Comment
  RSA0033853  Holocarpha obconica Barbara Ertter 2002-11-11 18072 Contra Costa Round Valley Regional Preserve east of Mount Diablo, along Round Valley Creek/Miwok Trail. 91 Comment
  RSA0033854  Trifolium oliganthum Barbara Ertter 2003-3-28 18135 Contra Costa Round Valley Regional Preserve, mid Hardy Canyon along High Creek. 182 Comment
  RSA0033855  Vulpia myuros var. hirsuta Barbara Ertter 2003-2-8 18092 a Contra Costa Richmond Field Station (UC Berkeley). Comment
  RSA0033857  Trifolium hybridum Barbara Ertter 2000-7-16 17391 Contra Costa Lower Pine Creek in Diablo Foothills Regional Park, a short distance upstream from dry check-dam. 121 Comment
  RSA0033930  Sanicula crassicaulis Barbara Ertter, Richard K. Brummitt 1998-5-6 16087 Contra Costa Lower Donner Canyon Road on north base of Mount Diablo, ca. 1/2 miles south of Donner cabin site. 304 Comment
  RSA0033933  Balsamorhiza deltoidea Barbara Ertter, Holly C. Forbes 1997-4-20 15564 Contra Costa North base of Mount Diablo at NE base of Eagle Ridge. Lower end of Eagle Peak Trail. Comment
  RSA0033934  Crypsis schoenoides Barbara Ertter, Chris Thayer 1996-10-25 15360 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park. 91 Comment
  RSA0033935  Mentha spicata var. spicata Barbara Ertter, Mary L. Bowerman 1996-11-1 15394 Contra Costa North base of Mount Diablo, downstream from Mitchell Canyon parking lot. Comment
  RSA518721  Frankenia salina Barbara Ertter, E. Neese 1988-10-15 7977 Contra Costa West of I-580 in El Cerrito, west side along Rydin Road north of Central Avenue. Comment
  RSA537664  Lasthenia ferrisiae Barbara Ertter, Jokerst, D. Magney 1989-4-5 8124 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  RSA666356  Lonicera japonica Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10694 Contra Costa Browns Island N of Pittsburg near confluence of Sacramento and San Joaquin rivers opposite Pittsburg Marina; west end of island. Comment
  RSA666409  Agrostis avenacea Barbara Ertter, Brad Olson 1991-9-28 10831 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  RSA666475  Isolepis cernua Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10713 Contra Costa Browns Island N of Pittsburg near confluence of Sacramento and San Joaquin rivers opposite Pittsburg Marina. Comment
  RSA720790  Crypsis schoenoides Barbara Ertter, Mary L. Bowerman, Lisa Schultheis, Kevin Hintsa 1995-10-22 14532 Contra Costa Three Spring Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. Comment
  RSA720842  Phalaris aquatica Barbara Ertter, Richard K. Rabeler 1994-6-6 12823 Contra Costa Point Isabel in south Richmond Comment
  RSA720843  Spartina densiflora Barbara Ertter, Richard K. Rabeler 1994-6-18 12835 Contra Costa Point Pinole Regional Shoreline at north end of Richmond, beach on north side Whittell Marsh Comment
  RSA7210809  Briza maxima Barbara Ertter, Chris Thayer 1995-4-25 13999 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd at northeast FK of Sycamore Creek 396 Comment
  RSA721286  Brachypodium distachyon Barbara Ertter, Mary L. Bowerman 1995-5-7 14026 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road through annual grassland with scattered blue oak south of Marsh Creek. Road. summit. 305 Comment
  RSA721367  Hedera helix Barbara Ertter 1994-10-23 13915 Contra Costa Southwest El Cerrito, north edge Breuner s parking lot, northwest Albany Hill. Comment
  RSA721734  Arctostaphylos glauca Barbara Ertter, Holy Forbes 1996-2-11 14548 Contra Costa North side Mount Diablo; Murchio Gap on Median Ridge Road. 732 Comment
  RSA721735  Agrostis avenacea Barbara Ertter 1994-5-7 12748 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Comment
  RSA722062  Panicum capillare Barbara Ertter, Lincoln Constance 1995-6-16 14262 Contra Costa East edge Dow Marsh on west side Antioch Marina, south side San Joaquin River Comment
  RSA722067  Parapholis incurva Barbara Ertter, Brad Olson 1994-5-7 12764 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Comment
  RSA722105  Festuca rubra Barbara Ertter, Brad Olson 1994-5-7 12752 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Comment
  RSA722467  Juncus gerardi Barbara Ertter, Steve Matson 2003-5-31 18175 Contra Costa Martinez Regional Shoreline, brackish marsh along Pickleweed Trail west of Arch Bridge. Comment
  RSA722472  Elymus glaucus Barbara Ertter 2002-6-16 17953 Contra Costa Richmond Field Station, southwest end of overgrown meadow near boundary with park, edge of thick growth facing fence. Comment
  RSA755498  Artemisia biennis Barbara Ertter, Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19800 Contra Costa Mudflats at upper (south) end of San Pablo Dam Reservoir northwest or Orinda 90 Comment
  RSA755793  Pholistoma membranaceum Barbara Ertter 1992-3-8 10909 Contra Costa NE edge of Black Diamond Mines Regional Preserve, NE-heading canyon with steep loose sides ca. 1/2 mile west of junction of Stewartville Trail and Frederickson Lane. Comment
  RSA756399  Melica torreyana Barbara Ertter, John Little 1989-4-2 8111 Contra Costa Hillside park in El Cerrito, +/- undisturbed vegetation on steep west-facing slope Comment
  RSA756868  Hordeum marinum subsp. gussoneanum Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8140 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton; near sea level 0 Comment
  RSA757946  Crypsis vaginiflora Barbara Ertter 1989-9-30 8865 Contra Costa Tilden Regional Park east of El Cerrito, East Bay Skyline National Recreation Trail (= Nimitz Way), small dried pond about 1.25 miles northwest of Inspiration Piont. Comment
  RSA771181  Sanicula saxatilis Barbara Ertter, Brad Olson, Lynne Hosley 1991-4-7 9728 Contra Costa Eagle Peak on Mount Diablo, scree slopes on east and southwest side, esp. in drainages Comment
  SBBG122780  Potamogeton diversifolius B. Ertter, B. Olson 1991-9-28 10839 Contra Costa S end of San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  SBBG122783  Elodea canadensis B. Ertter, B. Olson 1991-9-28 10841 Contra Costa S end of San Pablo Reservoir, between Orinda and El Sobrante 91 Comment
  SBBG122786  Anagallis arvensis B. Ertter 1993-5-7 11717 Contra Costa horse trail SE of Vollmer Peak, E of Tilden Park steam trains 518 Comment
  SBBG122790  Najas guadalupensis B. Ertter, B. Olson 1991-9-28 10838 Contra Costa S end of San Pablo Reservoir, between Orinda and El Sobrante 91 Comment
  SBBG122838  Juncus gerardi B. Ertter, S. Matson 2003-5-31 18175 Contra Costa Pickleweed Trail W of Arch Bridge, Martinez Regional Shoreline Comment
  SBBG122850  Hedypnois cretica B. Ertter 1994-5-23 12809 Contra Costa end of Rydin Rd, Pt Isabel at S end of Richmond Comment
  SBBG122899  Geranium rotundifolium B. Ertter 1996-6-4 14684 Contra Costa NE of jct of Grizzly Peak Blvd and Golf Course Drive, Tilden Regional Park Comment
  SBBG122904  Fumaria capreolata B. Ertter 1999-3-21 16486 Contra Costa Miller Knox Regional Park near Pt Richmond Comment
  SBBG122952  Lasthenia glabrata subsp. glabrata B. Ertter, C. Thayer 1993-5-7 11705 Contra Costa ca. 0.5 mi N of Vollmer Peak, East Bay Municpal Utilities District land E of Tilden Park 457 Comment
  SD131818  Lepidium nitidum Barbara Ertter, Jokerst and Magney 1989-4-5 8123 Contra Costa Alkali sink west and adjacent to Clifton Court Forebay, ca. 15 air miles southwest of Stockton Comment
  SD211524  Potamogeton filiformis Barbara Ertter, Diane Lake, et al 1991-8-18 10715 Contra Costa Browns Island North of Pittsburg near confluence of Sacrament and San Joaquin rivers opposite Pittsburg Marina; at West end of island. Comment
  SD211526  Stuckenia pectinata Barbara Ertter, Lynn Hosley 1991-9-22 10824 Contra Costa Lafayette Reservoir in hills Southwest of Lafayette, in water at East end of dam 136 Comment
  SD211529  Sanicula saxatilis Barbara Ertter, Brad Olson et al 1991-4-7 9728 Contra Costa Eagle Peak on Mount Diablo; scree slopes on East and Southwest side, especially in drainages 228 Comment
  SD211620  Pholistoma membranaceum Barbara Ertter 1992-3-8 10909 Contra Costa Northeast edge of Black Diamond Mines Regional Preserve, Northeast-heading canyon with steep loose sides circa 1/2 mile West of junctin of Stewartville Trail and Frederickson Lane Comment
  SD241642  Juncus gerardi subsp. gerardi Barbara Ertter, Steve Matson 2003-5-31 18175 Contra Costa Martinez Regional Shoreline, brackish marsh along Pickleweed Trail west of Arch Bridge. Comment
  SEINET11263164  Ranunculus canus Barbara Ertter, Brad Olson; James R. Shevock 1997-3-19 15505 Contra Costa East of Los Vaqueros Reseroir between Livermore and Brentwood.; 0 Comment
  SEINET11263885  Eschscholzia californica Barbara Ertter, Tony Morosco 1996-7-27 15039 Contra Costa Cardinet Oaks Road at crossing of Donner Creek.; 0 335 Comment
  SEINET12765134  Salsola soda Barbara Ertter 1990-9-30 9659 Contra Costa Northwest side of county, Point Pinole Regional Shoreline on San Pablo Bay, north Richmond; edge of salicornia marsh on N edge of park.; 0 Comment
  SEINET12765193  Ranunculus lobbii Barbara Ertter, David Gowen 2006-3-1 18665 Contra Costa Upper San Leandro Reservoir Watershed (EBMUD) south of Moraga, along SE end of Rocky Ridge Road as it drops to King Cyn Rd.; 0 180 Comment
  SEINET1869807  Plagiobothrys leptocladus Barbara Ertter, Jim Jokerst and Dave Magney 1989-1 8129 Contra Costa Alkali sink W and adjacent to Clifton Court Forebay, ca 15 air miles SW of Stockton. 0 Comment
  SEINET1906278  Plagiobothrys stipitatus var. micranthus Barbara Ertter, Jim Jokerst and Dave Magney 1989-1 8126 Contra Costa Alkali sink W and adjacent to Clifton Court Forebay, ca 15 air miles SW of Stockton. 0 Comment
  SEINET3383312 Image available Melica torreyana Barbara Ertter, John Little 1989-1 8111 Contra Costa Hillside Park in El Cerrito, +/- undisturbed vegetation on steep W facing slope Comment
  SEINET4182779 Image available Hordeum marinum subsp. gussoneanum Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8140 Contra Costa Alkali sink West and adjacent Clifton Court Forebay, circa 15 air miles Southwest of Stockton 0 Comment
  SEINET4343746 Image available Festuca rubra Barbara Ertter, Brad Olson 1994-5-7 12752 Contra Costa South end Pt Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay Comment
  SEINET9161829  Ranunculus lobbii B. Ertter, D. Gowen 2006-3-1 18665 Contra Costa Upper San Leandro Reservoir Watershed (EBMUD) S of Moraga, along SE end of Rocky Ridge Road as it drops to King Canyon Road. 180 Comment
  UC1561208  Sanicula bipinnatifida Barbara Ertter with John Little 1989-4-2 8108 Contra Costa El Cerrito, at s end of Hillside Park Hillside Park; El Cerrito, Hillside Park Comment
  UC1561246  Hemizonia congesta subsp. luzulifolia Barbara Ertter 1989-9-30 8861 Contra Costa e El Cerrito (3 mi nw of Inspiration Point, East Bay Skyline Nat'l Recreation Trail = Nimitz Way); East Bay Skyline Nat'l Recreation Trail, Wildcat Canyon Regi Comment
  UC1561248  Senecio minimus Barbara Ertter 1989-9-30 8862 Contra Costa along streamlet at base of brush-covered slope,just n Tilden Park border; Wildcast Regional Park, East Bay Skyline Natl Recreation Tr Comment
  UC1561249  Helenium puberulum Barbara Ertter 1989-9-30 8863 Contra Costa East Bay Skyline Nat'l Recreation Trail (=Nimitz Way) just n Tilden Park border (e of El Cerrito); Wildcat Canyon Regional Park Comment
  UC1561251  Symphyotrichum subspicatum Barbara Ertter 1989-9-30 8867 Contra Costa e of, (East Bay Skyline Nat'l Recreatn Trail (= Nimitz Way) n of Inspiration P. El Cerrito; Tilden Regional Park Comment
  UC1561256  Cardamine oligosperma Barbara Ertter with John Little 1989-4-2 8112 Contra Costa Hillside Park , Hillside Park (El Cerrito) Comment
  UC1561257  Crassula connata Barbara Ertter with John Little 1989-4-2 8110 Contra Costa s. side Hillside Park in El Cerrito Comment
  UC1562561  Lupinus microcarpus var. densiflorus Barbara Ertter with Elizabeth Neese 1988-4-24 7450 Contra Costa n of e-w part of Black Diamond Trail sw Antioch (Black Diamond Mines Regional Preserve); Black Diamond Mines Regional Preserve Comment
  UC1562851  Lupinus microcarpus var. densiflorus Barbara Ertter with Elizabeth Neese 1988-4-24 7450 Contra Costa n of e-w part of Black Diamond Trail sw Antioch (Black Diamond Mines Regional Preserve); Black Diamond Mines Regional Preserve Comment
  UC1563655  Lepidium nitidum var. oreganum Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8123 Contra Costa ca 15 air mi sw Stockton (w and adjacent to Clifton Court Forebay, se Contra Costa Co.); se Contra Costa Co. Comment
  UC1563678  Limonium californicum Barbara Ertter with Elizabeth Neese 1988-10-15 7981 Contra Costa El Cerrito; marsh w of I-580, w side along Rydin Road n of Central Ave. Comment
  UC1563700  Psilocarphus brevissimus var. brevissimus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8143 Contra Costa ca 15 air mi sw Stockton (w and adjacent to Clifton Court Forebay, se Contra Costa Co.) Comment
  UC1563731  Callitriche longipedunculata Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8144 Contra Costa West and adjacent Clifton Court Forebay, ca. 15 air miles SW od Stockton. SE Contra Costa County. Comment
  UC1563855  Centromadia pungens subsp. pungens Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8138 Contra Costa alkali sink w and adjacen to Clifton Court Forebay (ca 15 air mi sw of Stockton) 0 Comment
  UC1563862  Limonium californicum Barbara Ertter with Elizabeth Neese 1988-10-15 7981 Contra Costa El Cerrito; marsh w of I-580, w side along Rydin Road n of Central Ave. Comment
  UC1563866  Cyperus eragrostis Barbara Ertter 1989-9-30 8864 Contra Costa e. El Cerrito (ca. 1 1/4 mi. n.w. of Inspiration Point, E. Bay Skyline Nat'l Recreation Trail (= Nimitz Way), Tilden Regional Park); Tilden Regional Park Comment
  UC1563908  Lasthenia fremontii Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8136 Contra Costa w and adjacent to Clifton Court Forebay (ca. 15 air mi sw of Stockton, se Contra Costa County) Comment
  UC1563942  Spergularia macrotheca var. longistyla Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8113 Contra Costa 15 air mi sw of Stockton (w and adjacent to Clifton Court Forebay, se Contra Costa County) Comment
  UC1585845  Lepidium dictyotum Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8142 Contra Costa ca 15 air mi sw Stockton (w and adjacent to Clifton Court Forebay, se Contra Costa Co.) Comment
  UC1585874  Lasthenia ferrisiae Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8124 Contra Costa alkali sink w and adjacent to Clifton Court Forebay (ca 15 air mi sw of Stockton) Comment
  UC1585875  Lepidium nitidum var. oreganum Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8127 Contra Costa ca 15 air mi sw Stockton (w and adjacent to Clifton Court Forebay) Comment
  UC1585942  Rumex obtusifolius Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8122 Contra Costa ca 15 air mi sw Stockton (w and adjacent to Clifton Court Forebay); Clifton Court Forebay Comment
  UC1585978  Amaranthus deflexus Barbara Ertter with Elizabeth Neese 1988-10-15 7973 Contra Costa w of I-580 (jct of Central Ave and Rydin Road, El Cerrito); El Cerrito Comment
  UC1586032  Trifolium depauperatum var. truncatum Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8134 Contra Costa w and adjscent to Clifton Court Forebay (ca 15 air mi sw of Stockton); ; SESW 0 Comment
  UC1586040  Vicia americana var. americana Barbara Ertter with John Little 1989-4-2 8104 Contra Costa n end Hillside Park, El Cerrito; El Cerrito Comment
  UC1586061  Triphysaria eriantha subsp. eriantha Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8125 Contra Costa ca 15 air mi sw Stockton (se Contra Costa County); adjacent to Clifton Court Forebay 0 Comment
  UC1586069  Microseris douglasii subsp. douglasii Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8118 Contra Costa 15 air mi sw Stockton (w and adjacent to Clifton Court Forebay, se Contra Costa County) Comment
  UC1586096  Clarkia unguiculata Barbara Ertter with Travis Columbus 1990-6-10 9105 Contra Costa w Pleasant Hill (hillside above junction of Spengler and Blue Oak trail, ne corner of park); Briones Regional Park, Briones Hills 274 Comment
  UC1606281  Symphyotrichum subulatum Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10868 Contra Costa Dow Wetlands Preserve, just W of Antioch marina; along levee at water's edge, accessed from marina. Comment
  UC1606283  Cephalanthus occidentalis var. californicus Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10880 Contra Costa just w Antioch marina (Dow Wetlands Preserve, levee at n-center of preserve, at end of road); Dow Wetlands Preserve Comment
  UC1606286  Lilaeopsis masonii Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10713 a Contra Costa N of Pittsburg (Browns Island, near confluence of Sacramento and San Joaquin rivers, opposite Pittsburg Marina (Botany Cove)) Comment
  UC1606287  Egeria densa Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10864 Contra Costa just w Antioch marina (accessed from marina); Dow Wetlands Preserve Comment
  UC1606288  Potamogeton crispus Barbara Ertter, B. Olson, D. Lake, L. Hosley and A. Youngson 1991-10-20 10865 Contra Costa just w of Antioch marina (along levee at water's edge, accessed from marina); Dow Wetlands Preserve Comment
  UC1606289  Paspalum distichum Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10870 Contra Costa just w Antioch (Dow Wetlands Preserve); Dow Wetlands Preserve Comment
  UC1606290  Vicia villosa subsp. villosa Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10878 Contra Costa just w Antioch marina (e end of marsh across from marina); Dow Wetlands Preserve Comment
  UC1606296  Epilobium campestre Barbara Ertter 1990-9-10 9635 Contra Costa s Martinez (junction of Alhambra Creek Trail and Old Briones Rd.); Briones Hills, Briones Regional Park, Maricich Lagoon 335 Comment
  UC1606300  Potamogeton filiformis Barbara Ertter with Lynne Hosley and Sid Cowles 1992-6-7 11087 Contra Costa pond in quarry E of Round Top; Sibley Volcanic Regional Preserve, Oakland Hills Comment
  UC1606301  Erigeron foliosus var. franciscensis Barbara Ertter with Lynne Hosley and Sid Cowles 1992-6-7 11083 Contra Costa small knoll e Round Top; Oakland Hills, Sibley Volcanic Regional Preserve Comment
  UC1606303  Medicago arabica Barbara Ertter, Chris Thayer 1993-5-7 11699 Contra Costa on Wildcat Canyon Rd. 1/2 mi e Inspiration Point (e of Tilden Park); East Bay Municipal Utilities District land, Hopkins Spring 304 Comment
  UC1606305  Senecio aronicoides Barbara Ertter, Chris Thayer 1993-5-7 11702 Contra Costa ca 1/2 mi n Vollmer (=Bald) Peak (in East Bay Municipal Utilities District land e of Tilden Park, just below ridge on ne-facing slope) 457 Comment
  UC1606308  Hordeum brachyantherum subsp. brachyantherum Barbara Ertter, Chris Thayer 1993-5-7 11689 Contra Costa on Wildcat Canyon Road Hopkins Spring 1/2 mi se Inspiration Point (East Bay Municipal Utilities District land e of Tilden Park); Hopkins Spring, East Bay Municipal Utilities District land 304 Comment
  UC1606309  Cardamine hirsuta Barbara Ertter 1993-2-28 11461 Contra Costa edge Vollmer Peak Trail (Tilden Regional Park in Berkeley Hills, above steam trains); Tilden Regional Park in Berkeley Hills Comment
  UC1606312  Montia fontana Barbara Ertter, Chris Thayer 1993-5-7 11691 Contra Costa 1/2 mi se of Inspiration Point (on Wilcat Canyon Road, East Bay Municipal Utilities District land e of Tilden Park); Hopkins Spring, East Bay Municipal Utilities District land 304 Comment
  UC1606334  Chamaesyce serpyllifolia Barbara Ertter, Brad Olson 1991-9-28 10830 Contra Costa betw Orinda and El Sobrante San Pablo Reservoir (s end of reservoir) Comment
  UC1606335  Elatine brachysperma Barbara Ertter, Brad Olson 1991-9-28 10829 a Contra Costa betw Orinda and El Sobrante San Pablo Reservior Comment
  UC1606336  Elatine californica Barbara Ertter, Brad Olson 1991-9-28 10829 Contra Costa betw Orinda and El Sobrante San Pablo Reservoir Comment
  UC1606337  Eleocharis acicularis Barbara Ertter, Brad Olson 1991-9-28 10832 Contra Costa S end of San Pablo Reservoir between Orinda and El Sobrante Comment
  UC1606338  Solanum americanum Barbara Ertter, Brad Olson 1991-9-28 10845 Contra Costa between Orinda and El Sobrante (s end of San Pablo Reservoir); San Pablo Reservoir 94 Comment
  UC1606339  Fraxinus latifolia Barbara Ertter, Brad Olson 1991-9-28 10844 Contra Costa between Orinda and El Sobrante (s end of San Pablo Reservoir); San Pablo Reservoir 94 Comment
  UC1606340  Alisma plantago-aquatica Barbara Ertter, Brad Olson 1991-9-28 10847 Contra Costa between Orinda and El Sobrante (s end of San Pablo Reservoir); San Pablo Reservoir 94 Comment
  UC1606344  Datura wrightii Barbara Ertter, B. Olson, D. Lake, L. Hosley and A. Youngson 1991-10-20 10857 Contra Costa just w Antioch marina (Dow Wetlands Preserve, plowed fields at sw end); Dow Wetlands Preserve Comment
  UC1606345  Deschampsia elongata Barbara Ertter, Brad Olson 1991-9-28 10843 Contra Costa s. end of San Pablo Reservoir between Orinda and El Sobrante; San Pablo Reservoir 94 Comment
  UC1606346  Lotus purshianus var. purshianus Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10702 Contra Costa n of Pittsburg (near confluence of Sacramento and San Joaquin rivers, opposite Pittsburg Marina, flat in center of w end of island); Browns Island Comment
  UC1606349  Horkelia californica subsp. frondosa Barbara Ertter with Dianne Lake 1991-8-18 10677 Contra Costa e;steep N-facing slope above pilings, ne of Bull Valley staging area Crockett; Carquinez Stsrait Regional Shoreline Comment
  UC1606350  Oenanthe sarmentosa Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10680 Contra Costa n. Pittsburg (near confluence of Sacramento & San Joaquin Rivers, opposite Pittsburg Marina, Browns Island, marsh at edge of lagoon in center of w. end of island); Browns Island Comment
  UC1606353  Cephalanthus occidentalis var. californicus Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10692 Contra Costa n of Pittsburg (Browns Island, near confluence of Sacramento River and San Joaquin River, opposite Pittsburg Marina); Browns Island Comment
  UC1606354  Oenothera elata Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10689 Contra Costa n Pittsburg (near confluence of Sacramento and San Joaquin Rivers, opposite Pittsburg Marina, dry levee near lagoon in center of w end of island); Browns Island Comment
  UC1606356  Zannichellia palustris Barbara Ertter, Lynne Hosley 1991-9-22 10826 Contra Costa Lafayette Reservoir in hills sw Lafayette (se side of Lafayette Reservoir); se side of Lafayette Reservoir 137 Comment
  UC1606357  Gastridium ventricosum Barbara Ertter, Brad Olson 1991-9-28 10852 Contra Costa s end San Pablo Reservoir (between Orinda and El Sobrante); s end San Pablo Reservoir 97 Comment
  UC1606358  Cyperus eragrostis Barbara Ertter, Brad Olson 1991-9-28 10848 Contra Costa s. end San Pablo Reservoir (between Orinda and El Sobrante) 97 Comment
  UC1606360  Centaurium muehlenbergii Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10700 Contra Costa n of Pittsburg (near confluence of Sacramento River and San Joaquin River, opposite Pittsburg Marind, flat in the center of w end of Browns Island); Browns Island Comment
  UC1606370  Senecio aronicoides Barbara Ertter, Brad Olson 1992-4-13 10953 Contra Costa Knobcone Point Rd ca 1 mi from Curry Point; Mount Diablo State Park 487 Comment
  UC1606408  Dudleya farinosa Barbara Ertter 1992-7-25 11261 Contra Costa s end Point Richmond (near Brickyard Landing, above rr tracks) Comment
  UC1606421  Grindelia hirsutula Barbara Ertter 1993-5-9 11719 Contra Costa near Brickyard Landing (bluffs at end of Garan Road, sw corner of Point Richmond); Point Richmond Comment
  UC1606422  Cornus sericea subsp. sericea Barbara Ertter, Chris Thayer 1993-5-7 11697 Contra Costa EBMUD land e. of Tilden Park (Hopkins Spring 1/2 mi. s.e. of Inspiration Pt. on Wildcat Canyon Rd.) 304 Comment
  UC1606429  Perideridia kelloggii Barbara Ertter, Brad Olson 1993-8-8 12203 Contra Costa sw San Ramon; Bishop Ranch Regional Open Space Comment
  UC1606432  Stephanomeria elata Barbara Ertter, Brad Olson 1993-10-30 12284 Contra Costa Carquinez Strait Regional Shoreline/Trail west of junction of San Pablo Avenue and Vista del Rio west of Crockett. Comment
  UC1606434  Malvella leprosa Barbara Ertter, Brad Olson 1993-10-30 12289 Contra Costa n.e. Rodeo (across R.R. tracks from San Pablo Ave., beach next to jetty) Comment
  UC1607502  Lemna minor Barbara Ertter, Brad Olson 1991-9-28 10850 Contra Costa between Orinda and El Sobrante (s end of San Pablo Reservoir); San Pablo Reservoir 97 Comment
  UC1607503  Vicia sativa Barbara Ertter 1993-4-2 11475 a Contra Costa w of Crockett (along railroad, base of n-facing bluffs at w wnd of Carquinez Strait, San Pablo Bay); San Pablo Bay, Carquinez Strait Comment
  UC1607511  Salpichroa origanifolia Barbara Ertter 1991-5-12 9818 Contra Costa Point Isabel Regional Shoreline in SW corner of El Cerrito, on San Francisco Bay Comment
  UC1607514  Brassica rapa Barbara Ertter 1993-4-2 11477 Contra Costa Carquinez Regional Park below Vista Road w of Crockett; Carquinez Regional Park Comment
  UC1607543  Zannichellia palustris Barbara Ertter, Brad Olson 1991-9-28 10840 Contra Costa in shallow water at s end San Pablo Reservoir (between Orinda and El Sobrante); s end San Pablo Reservoir 91 Comment
  UC1607552  Navarretia squarrosa Barbara Ertter with Laura Fujii 1990-7-21 9398 Contra Costa w of Pleasant Hill (near junction of Briones Crest and Spengler trails); Briones Regional Park, Briones Hills 396 Comment
  UC1607567  Tamarix parviflora Barbara Ertter 1993-4-2 11480 Contra Costa west of Crockett (below Vista Road, abandoned railroad station); Carquinez Regional Park Comment
  UC1607581  Genista monspessulana Barbara Ertter 1991-5-12 9816 Contra Costa sw corner El Cerrito (Point Isabel Regional Shoreline, on San Francisco Bay); San Francisco Bay Comment
  UC1607585  Trifolium ciliolatum Barbara Ertter 1991-6-1 10077 Contra Costa w Danville (in hills at n end of Rocky Ridge Trail); Las Trampas Regional Wilderness 548 Comment
  UC1607604  Atriplex triangularis Barbara Ertter with Elizabeth Neese 1988-10-15 7979 Contra Costa in salicornia marsh w. of I-580 in El Cerrito (w side along Rydin Road n of Central Avenue; edge of roadbank and marsh) Comment
  UC1607605  Atriplex lentiformis Barbara Ertter 1990-10-24 9686 Contra Costa Martinez Regional Shoreline on Carquinez Strait (beaten saline soil along path through saltmarsh); Martinez Regional Shoreline on Carquinez Strait Comment
  UC1607618  Mentha canadensis Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10697 Contra Costa n Pittsburg (near confluence of Sacramento and San Joaquin Rivers, opposite Pittsburg Marina, at edge of lagoon in center of w end of island); Browns Island, nr confluence Sacramento and San Joaquin Rive Comment
  UC1607619  Lycopus asper Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10691 Contra Costa w. end of Browns Isl. n. of Pittsburg (near confluence of Sacramento & San Joaquin Rivers, opposite Pittsburg Marina); Browns Isl. Comment
  UC1607626  Lupinus albifrons var. collinus Barbara Ertter 1991-5-5 9772 Contra Costa halfway up E ridge Rose Hill (above cemetary, Black Diamond Mines Regional Preserve s of Pittsburg); Black Diamond Mines Regional Preserve, Rose Hill 365 Comment
  UC1607628  Cirsium occidentale var. venustum Barbara Ertter, Lynne Hosley 1992-8-29 11265 Contra Costa E of Mount Diablo (Prairie Falcon trail); Morgan Territory Regional Preserve Comment
  UC1607629  Linanthus bicolor Barbara Ertter, Lynne Hosley 1993-4-17 11509 Contra Costa ca 10 air mi n Livermore (hills in lee of Mt. Diablo, e side of open meadow along Blue Oak trail); Morgan Territory 609 Comment
  UC1607637  Collinsia sparsiflora var. collina Barbara Ertter with Michelle Seidl 1992-3-14 10919 Contra Costa Morgan Territory Regional Preserve e of Mount Diablo; Morgan Territory Regional Preserve Comment
  UC1607640  Eriogonum nudum var. auriculatum Barbara Ertter, Brad Olson 1993-10-30 12285 Contra Costa w junction of San Pablo Avenue and Vista del Rio (at base of steep bluff above railroad tracks; w of Crockett); Carquinez Strait Regional Shoreline Comment
  UC1607650  Juncus balticus Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10704 Contra Costa opposite of Pittsburg Marina (center of w end of Browns Island, n of Pittsburg, near confluence of Sacramento and San Joaquin Rivers); Browns Island Comment
  UC1607652  Chenopodium ambrosioides Barbara Ertter, B. Olson, D. Lake, L. Hosley and A. Youngson 1991-10-20 10883 Contra Costa just w Antioch marina (levee at n-center of preserve, at end of road); Dow Wetlands Preserve Comment
  UC1607654  Phragmites australis Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10707 Contra Costa n Pittsburg (near confluence of Sacramento and San Joaquin Rivers, opposite Pittsburg Marina, near w end of <Browns> Island); Browns Island Comment
  UC1607656  Sidalcea malviflora subsp. laciniata Barbara Ertter, Chris Thayer 1993-5-7 11704 Contra Costa ca 1/2 mi n Vollmer Peak (= Bald Peak, in East Bay Municipal Utilities District land, e of Tilden Park); n of Vollmer Peak (= Bald Peak), e of Tilden Park 457 Comment
  UC1607657  Sidalcea malviflora subsp. laciniata Barbara Ertter, Chris Thayer 1993-5-7 11704 Contra Costa ca 1/2 mi n Vollmer Peak (= Bald Peak, in East Bay Municipal Utilities District land, e of Tilden Park); n of Vollmer Peak (= Bald Peak), e of Tilden Park 457 Comment
  UC1607658  Asarum caudatum Barbara Ertter, Chris Thayer 1993-5-7 11698 Contra Costa on Wildcat Canyon Road Hopkins Spring 1/2 mi se Inspiration Point (East Bay Municipal Utilities District Land e of Tilden Park); e of Tilden Park, Hopkins Spring 304 Comment
  UC1607661  Athysanus pusillus Barbara Ertter with Michelle Seidl 1992-3-14 10920 Contra Costa e of Mount Diablo (Morgan Territory Regional Preserve); Morgan Territory Regional Preserve Comment
  UC1607662  Stellaria nitens Barbara Ertter with Michelle Seidl 1992-3-14 10917 Contra Costa e of Mount Diablo (Morgan Territory Regional Preserve); Morgan Territory Regional Preserve Comment
  UC1607663  Fritillaria affinis Barbara Ertter with Michelle Seidl 1992-3-14 10916 Contra Costa e of Mount Diablo (Morgan Territory Regional Preserve, between Blue Oak and Manzanita trails); Morgan Territory Regional Preserve Comment
  UC1607664  Orobanche uniflora Barbara Ertter with Michelle Seidl 1992-3-14 10918 Contra Costa Morgan Territory Regional Preserve e of Mount Diablo; Morgan Territory Regional Preserve Comment
  UC1607677  Pogogyne serpylloides Barbara Ertter, Chris Thayer 1993-5-7 11696 Contra Costa East Bay Municipal Utilities District land e. Tilden Park (Hopkins Spring 0.5 mi. s.e. of Inspiration Point on Wildcat Canyon Rd.); Hopkins Spring 304 Comment
  UC1607683  Carex barbarae Barbara Ertter, Brad Olson 1991-9-28 10846 Contra Costa between Orinda and El Sobrante (s end of San Pablo Reservoir); San Pablo Reservoir 94 Comment
  UC1607684  Minuartia pusilla Barbara Ertter, Lynne Hosley 1993-4-17 11512 Contra Costa ca 10 air mi n Livermore (hills in lee of Mt. Diablo, edge of outcrop s of Hummingbird trail); Morgan Territory 609 Comment
  UC1607701  Lepidium latifolium Barbara Ertter 1991-5-12 9810 Contra Costa sw corner El Cerrito (Point Isabel Regional Shoreline, n of park); San Francisco Bay, Point Isabel Regional Shoreline Comment
  UC1607702  Lepidium latifolium Barbara Ertter 1991-5-12 9810 Contra Costa sw corner El Cerrito (n of park); San Francisco Bay, Point Isabel Regional Shoreline Comment
  UC1618131  Spergularia marina Barbara Ertter 1994-5-17 12784 Contra Costa Martinez, on waterfront Martinez Comment
  UC1618132  Spergularia villosa Barbara Ertter, Brad Olson 1994-5-7 12747 Contra Costa s end of Point Molate Beach Park w of Richmond (n of bridge to San Rafael, San Francisco Bay, along old railroad grade); San Francisco Bay, Point Molate Beach Park Comment
  UC1618133  Spergularia villosa Barbara Ertter 1996-4-7 14575 Contra Costa w of Richmond (Point San Pablo at edge of San Francisco Bay, n end of ridge where crossed by road to harbor); San Francisco Bay, Point San Pablo Comment
  UC1618135  Spergularia rubra Barbara Ertter with CNPS Volunteers 1996-5-8 14641 Contra Costa at head of trail from North Gate Road to Diablo Foothills Regional Park (nw foot of Mount Diablo); Mount Diablo 121 Comment
  UC1618136  Spergularia villosa Barbara Ertter with Chris Thayer and Dianne Lake 1996-5-16 14680 Contra Costa w of Richmond (Point Molate Naval Fuel Depot overlooking San Francisco Bay, around Tank 14); San Francisco Bay, Point Molate Naval Fuel Depot Comment
  UC1618138  Spergularia rubra Barbara Ertter with Tony Morosco 1996-1-15 14545 Contra Costa on road to Frog Pond from Curry Point (se side Mount Diablo, below Sheepherder (Chase) Pond); Mount Diablo Comment
  UC1618174  Crypsis schoenoides Barbara Ertter 1989-9-30 8866 Contra Costa 1 1/4 mi nw of Inspiration Point (Tilden Regional Park e of El Cerrito, East Bay Skyline National Recreation Trail (=Nimitz Way)); Tilden Regional Park, E Bay Skyline Nat'l Recreation Trail Comment
  UC1618178  Lavatera cretica Barbara Ertter 1991-5-12 9813 Contra Costa sw corner El Cerrito (Point Isabel Regional Shoreline, on San Francisco Bay); San Francisco Bay, Point Isabel Regional Shoreline Comment
  UC1618191  Poa bulbosa Barbara Ertter, Lynne Hosley 1993-4-17 11507 Contra Costa ca. 10 air mi. n. Livermore (hills in lee of Mt. Diablo, e. side open meadow along Blue Oak trail, Morgan Territory); Morgan Territory 609 Comment
  UC1618195  Plagiobothrys stipitatus var. micranthus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8126 Contra Costa ca. 15 air miles s.w. Stockton (alkali sink w. and adjacent to Clifton Court Forebay); s.e. contra Costa Co. Comment
  UC1618196  Plagiobothrys leptocladus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8129 Contra Costa ca. 15 air miles s.w. Stockton (w. and adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  UC1618197  Plagiobothrys stipitatus var. stipitatus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8120 Contra Costa ca. 15 air mi. s.w. Stockton (w. & adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  UC1618199  Plagiobothrys acanthocarpus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8133 Contra Costa ca. 15 air mi. s.w. Stockton (alkali sink w. and adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  UC1618201  Plagiobothrys trachycarpus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8117 Contra Costa ca. 15 air mi. s.w. Stockton (w. & adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  UC1618202  Asparagus asparagoides Barbara Ertter 1991-5-12 9817 Contra Costa sw corner El Cerrito (along old R.R. right-of-way between bay & salicornia marsh, Point Isabel Regional Shoreline, on San Francisco Bay); San Francisco Bay Comment
  UC1618203  Asparagus asparagoides Barbara Ertter 1991-1-21 9715 Contra Costa ne corner Point Isabel Regional Shoreline (El Cerrito, sw corner of Contra Costa County); El Cerrito Comment
  UC1618208  Eucrypta chrysanthemifolia var. chrysanthemifolia Barbara Ertter 1991-6-1 10078 Contra Costa hills w Danville (e side of Wind Caves on Sycamore Trail to Devil's Hole); Las Trampas Regional Wilderness, Wind Caves 548 Comment
  UC1618223  Amsinckia intermedia Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8130 Contra Costa ca. 15 air mi. s.w. Stockton (w. and adjacent to Clifton Court Forebay) Comment
  UC1618227  Spergularia macrotheca Barbara Ertter 1990-10-14 9661 Contra Costa Point Isabel Regional Shoreline San Francisco Bay, El Cerrito (w shoreline, sw El Cerrito) Comment
  UC1618238  Phoradendron villosum Barbara Ertter, Lynne Hosley 1992-8-29 11264 Contra Costa e Mt. Diablo (Morgan Territory Regional Preserve, along Condor Trail); Morgan Territory Regional Preserve Comment
  UC1618271  Alisma plantago-aquatica Barbara Ertter 1990-9-10 9638 Contra Costa s of Martinez (Briones Regional Park, Briones Hills, at margin of main Sindicich Lagoon); Briones Regional Park, Briones Hills 365 Comment
  UC1618272  Bassia hyssopifolia Barbara Ertter, B. Olson, D. Lake, L. Hosley and A. Youngson 1991-10-20 10885 Contra Costa just w Antioch marina (Dow Wetlands Preserve); Dow Wetlands Preserve Comment
  UC1618278  Schoenoplectus acutus var. occidentalis Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10708 Contra Costa opposite Pittsburg Marina (near w end of island, n of Pittsburg, near confluence of Sacramento and San Joaquin rivers); Browns Island Comment
  UC1618279  Carex pellita Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10705 Contra Costa opposite Pittsburg Marina (near w end of island, n of Pittsburg, near confluence of Sacramento and San Joaquin rivers); Browns Island Comment
  UC1618280  Eleocharis macrostachya Barbara Ertter, Brad Olson 1991-9-28 10836 Contra Costa S end of San Pablo Reservoir, between Orinda and El Sobrante 91 Comment
  UC1618283  Ceratophyllum demersum Barbara Ertter, Lynne Hosley 1991-9-22 10823 Contra Costa in hills sw of Lafayette (Lafayette Reservoir, at e end of dam); Lafayette Reservoir 137 Comment
  UC1618284  Lonicera japonica Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10694 Contra Costa opposite Pittsburg Marina (in center of w end of Browns Island n of Pittsburg near confluence of Sacramento and San Joaquin Rivers); Browns Island Comment
  UC1618289  Pyrus communis Barbara Ertter, Chris Thayer 1993-5-7 11700 Contra Costa Hopkins Spring 1/2 mi se of Inspiration Point (on Wilodcat Canyon Road, East Bay Municipal Utilities District land e of Tilden Park); Hopkins Spring 304 Comment
  UC1618290  Malus sylvestris Barbara Ertter, Lynne Hosley 1993-4-17 11506 Contra Costa 10 air mi n of Livermore (Morgan Territory, hills in lee of Mount Diablo, along Volvon Trail at se edge of park) 609 Comment
Read comments
Aug 15 2016
  UC1618293  Lagophylla ramosissima Barbara Ertter 1990-9-10 9636 Contra Costa eroded n-facing draw between Sindicich lagoon and Maricich lagoon (s of Martinez); Briones Regional Park, Briones Hills 335 Comment
  UC1618306  Osmorhiza berteroi Barbara Ertter with Travis Columbus 1990-6-10 9108 Contra Costa near stream crossing on Spengler Creek ne Briones Peak (ne corner of park, w of Pleasant Hill); Briones Regional Park, Briones Hills 182 Comment
  UC1618308  Tauschia hartwegii Barbara Ertter with Travis Columbus 1990-6-10 9106 Contra Costa ne corner Briones Regional Park (e-facing steep hillside above junction of Spengler and Blue Oak trails, Briones Hills, w of Pleasant Hill); ne corner of Briones Regional Park, Briones Hills 274 Comment
  UC1618312  Lupinus latifolius var. latifolius Barbara Ertter with Laura Fujii 1990-7-21 9402 Contra Costa W of Pleasant Hill (Homestead Valley trail, at Bear Creek crossing; Briones Hills); Briones Regional Park 274 Comment
  UC1618314  Lycopus americanus Barbara Ertter, CNPS 1990-9-16 9646 Contra Costa n.e. Brentwood (e. end of Gateway Rd. at w. edge of Franks Track State Recreation Area, Bethel Isl.); n.e. Contra costa co., Bethel Isl., Franks Track State Recre Comment
  UC1618316  Egeria densa Barbara Ertter, CNPS 1990-9-16 9648 Contra Costa Bethel Island ne of Brentwood (e end of Gateway Road at w edge of Franks Tract State Recreation Area, ne Contra Costa County); Bethel Island, Franks Tract State Recreation Area Comment
  UC1618318  Calochortus luteus Barbara Ertter with Travis Columbus 1990-6-10 9098 Contra Costa w of Pleasant Hill (trail heading down ridge on n side of Briones Peak, at jct with Spengler Trail, ne corner of Briones Regional Park, Briones Hills); Briones Hills, Briones Regional Park 274 Comment
  UC1618319  Brodiaea elegans subsp. elegans Barbara Ertter 1990-5-19 8995 Contra Costa n Lafayette (edge of ridge road); Briones Regional Park, Lafayette Ridge 365 Comment
  UC1618328  Pseudognaphalium luteoalbum Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10701 Contra Costa w end of island n Pittsburg (near confluence of Sacramento and San Joaquin river opposite Pittsburg Marina); Browns Island Comment
  UC1618329  Chenopodium album Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10884 Contra Costa just w Antioch marina (levee at n-center of preserve, at end of road); Dow Wetlands Preserve Comment
  UC1618330  Oenothera curtiflora Barbara Ertter 1991-9-22 10827 Contra Costa sw El Cerrito; Point Isabel Regional Shoreline Comment
  UC1618339  Trifolium bifidum var. decipiens Barbara Ertter, Chris Thayer 1993-5-7 11714 Contra Costa 1/2 mi n of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land e of Tilden Park (s of Wildcat Canyon Road); East Bay Municipal Utilities District land Comment
  UC1618342  Hypericum calycinum Barbara Ertter 1993-6-25 11907 Contra Costa 1/4 mi s of junction of Lomas Cantadas (1/4 mi s of Tilden miniature steam trains, Oakland-Berkeley Hills, Grizzly Peak Boulevard); Oakland-Berkeley Hills, Grizzly Peak Boulevard 487 Comment
  UC1618347  Phacelia californica Barbara Ertter, Chris Thayer 1993-5-7 11708 Contra Costa ca. 0.5 mi. n. Vollmer (=Bald) Peak (in EBMUD land e. of Tilden Park, just below ridge) 457 Comment
  UC1618349  Najas guadalupensis Barbara Ertter, Lynne Hosley 1991-9-22 10825 Contra Costa se side of Lafayette Reservoir in hills sw of Lafayette; Lafayette Reservoir 137 Comment
  UC1618350  Epilobium canum subsp. canum Barbara Ertter, Brad Olson 1993-10-30 12286 Contra Costa w. of junction San Pablo Ave. & Vista del Rio w. of Crockett (base of bluff above R.R. tracks); Carquinez Strait Regional Shoreline Comment
  UC1618351  Ranunculus muricatus Barbara Ertter, Chris Thayer 1993-5-7 11716 Contra Costa e of Tilden Park (1/2 mi n of Vollmer (=Bald)Peak in East Bay Municipal Utiliteis District land); East Bay Municipal Utiliteis District land 304 Comment
  UC1618355  Vicia sativa subsp. sativa Barbara Ertter 1993-4-2 11475 Contra Costa along railroad w of Crockett (at w end of Carquines Strait, San Pablo Bay); San Pablo Bay, Carquines Strait Comment
  UC1618357  Trifolium gracilentum Barbara Ertter, Chris Thayer 1993-5-7 11712 Contra Costa 1/2 mi n of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land e of Tilden Park (s of Wildcat Canyon Road); East Bay Municipal Utilities District Comment
  UC1618358  Trifolium dubium Barbara Ertter, Chris Thayer 1993-5-7 11713 Contra Costa 1/2 mi n of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land e of Tilden Park (s of Wildcat Canyon Road); East Bay Municipal Utilities District land Comment
  UC1618361  Cortaderia jubata Barbara Ertter 1991-9-28 10854 Contra Costa e end of Schmidt Street at El Cerrito recycling center, s end of Hillside Natural Area El Cerrito; , Hillside Natural Area, Schmidt Street Comment
  UC1618363  Pennisetum villosum Barbara Ertter, Brad Olson 1993-10-30 12290 Contra Costa w of railroad tracks n of mouth of Pinole Creek (along railroad track, San Pablo Regional Shoreline); San Pablo Regional Shoreline Comment
  UC1618369  Galium murale Barbara Ertter, Chris Thayer 1993-5-7 11715 Contra Costa 1/2 mi n of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land e of Tilden Park (s of Wildcat Canyon Road); East Bay Municipal Utilities District land Comment
  UC1618378  Sorghum bicolor Barbara Ertter, Brad Olson 1993-10-30 12291 Contra Costa w of railroad tracks n of mouth of Pinole Creek (along railroad track, San Pablo Regional Shoreline); San Pablo Regional Shoreline Comment
  UC1618392  Lasthenia glabrata subsp. glabrata Barbara Ertter, Chris Thayer 1993-5-7 11705 Contra Costa 1/2 mi n of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land e of Tilden Park 457 Comment
  UC1618393  Scirpus cernuus Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10713 Contra Costa Browns Island n of Pittsburg (near confluence of Sacramento and San Joaquin Rivers, opposite Pittsburg Marina, (Botany Cove)); Browns Island Comment
  UC1618402  Bidens laevis Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10873 Contra Costa just w. Antioch marina (Dow Wetlands Preserve, e. end of marsh across from marina); Dow Wetlands Preserve Comment
  UC1618403  Pluchea odorata var. odorata Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10869 Contra Costa just w. Antioch marina (along levee at water's edge, accessed from marina, Dow Wetlands Preserve); Dow Wetlands Preserve Comment
  UC1618405  Baccharis glutinosa Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10696 Contra Costa n. Pittsburg (Browns Isl., near confluence of Sacramento & San Joaquin rivers, opposite Pittsburg Marina, flat in center of w. end of island); Browns Island Comment
  UC1618412  Eurybia radulina Barbara Ertter with Dianne Lake 1991-8-18 10675 Contra Costa e. Crockett (above pilings n.e. of Bull Valley staging area, Carquinez Strait Regional Shoreline); Carquinez Strait Regional Shoreline Comment
  UC1618418  Helianthus californicus Barbara Ertter, Diane Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10719 Contra Costa west-most point opposite Pittsburg Marina (Browns Island n of Pittsburg near confluence of Sacramento and San Joaquin Rivers); Browns Island Comment
  UC1618419  Grindelia hirsutula Barbara Ertter, Diane Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10716 Contra Costa west-most point opposite Pittsburg Marina (Browns Island n of Pittsburg near confluence of Sacramento and San Joaquin Rivers); Browns Island Comment
  UC1618423  Ambrosia chamissonis Barbara Ertter, Brad Olson 1993-10-30 12288 Contra Costa n.e. Rodeo (across railroad tracks from San Pablo Ave., small sandy beach next to jetty) Comment
  UC1618424  Grindelia hirsutula Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10872 Contra Costa just w of Antioch Marina (Dow Wetlands Preserve); Dow Wetlands Preserve Comment
  UC1619908  Nerium oleander Barbara Ertter, Brad Olson 1993-10-30 12287 Contra Costa w of junction San Pablo Avenue and Vista del Rio w of Crockett ((collapsed section of abandoned blacktop), Carquinez Strait Regional Shoreline); Carquinez Strait Regional Shoreline Comment
  UC1619911  Phoenix canariensis Barbara Ertter, Brad Olson 1993-10-30 12292 Contra Costa w of railroad tracks n of mouth of Pinole Creek (San Pablo Regional Shoreline); San Pablo Regional Shoreline Comment
  UC1619916  Hydrocotyle verticillata Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10863 Contra Costa just w. Antioch marina (along levee at water's edge, accessed from marina, Dow Wetlands Preserve); Dow Wetlands Preserve Comment
  UC1619919  Juncus balticus Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10681 Contra Costa n Pittsburg (near confluence of Sacramento and San Joaquin Rivers opposite Pittsburg Marina, marsh at edge of lagoon in center of w end of island); Browns Island Comment
  UC1619920  Triglochin striata Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10714 Contra Costa Browns Island n of Pittsburg (near confluence of Sacramento and San Joaquin Rivers opposite Pittsburg Marina, at (Botany Cove)); Browns Island Comment
  UC1619933  Azolla filiculoides Barbara Ertter, Brad Olson 1991-9-28 10849 Contra Costa S end San Pablo Reservoir between Orinda and El Sobrante 97 Comment
  UC1619946  Lythrum californicum Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10695 Contra Costa Browns Island n. of Pittsburg (near confluence of Sacramento & San Joaquin rivers, opposite Pittsburg Marina, center of w. end of island); Browns Island Comment
  UC1619951  Lycopus americanus Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10876 Contra Costa just w. Antioch marina (Dow Wetlands Preserve, e. end of marsh across from marina); Dow Wetlands Preserve Comment
  UC1619953  Stachys albens Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10703 Contra Costa n. Pittsburg (in center of w. end of Browns Isl., near confluence of Sacramento & San Joaquin rivers opposite Pittsburg Marina); Browns Isl. Comment
  UC1619954  Mentha spicata Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10718 Contra Costa Browns Isl. n Pittsburg (near confluence of Sacramento & San Joaquin rivers, w.-most point opposite Pittsburg marina); Browns Isl. Comment
  UC1619980  Tragopogon porrifolius Barbara Ertter 1991-5-12 9812 Contra Costa s.w. corner El Cerrito (along old R.R. right-of-way between bay & salicornia marsh, Point Isabel Regional Shoreline, on San Francisco Bay); San Francisco Bay, Point Isabel Regional Shoreline Comment
  UC1619993  Heterotheca sessiliflora subsp. bolanderi Barbara Ertter 1991-5-5 9770 Contra Costa s of Pittsburg (s side of Rose Hill above cemetery, Black Diamond Mines Regional Preserve); Black Diamond Mines Regional Preserve, Rose Hill 365 Comment
  UC1622290  Cotoneaster pannosus Barbara Ertter 1997-1-5 15431 Contra Costa at Lime Ridge between Walnut Creek and Clayton (Ygnacio Valley Road); Lime Ridge, Ygnacio Valley Road Comment
  UC1622291  Cotoneaster lacteus Barbara Ertter 1997-1-5 15432 Contra Costa at Lime Ridge between Walnut Creek and Clayton (Ygnacio Valley Road); Lime Ridge, Ygnacio Valley Road Comment
  UC1719694  Acacia redolens Barbara Ertter, Brad Olson 1994-5-7 12742 Contra Costa S end of Point Molate Beach Park, edge of San Francisco Bay N of Richmond to San Rafael bridge Comment
  UC1719702  Acacia longifolia Barbara Ertter with Richard Rabeler 1994-6-2 12821 Contra Costa edge of San Francisco Bay on overgrown point south of Central Avenue at Point Isabel (subsequently cleared as part of new Eastshore State Park). Comment
  UC1719704  Acacia retinodes Barbara Ertter with Richard Rabeler 1994-6-2 12820 Contra Costa edge of San Francisco Bay on point S of Central Avenue at Point Isabel Comment
  UC1719706  Acacia retinodes Barbara Ertter 1995-1-14 13922 Contra Costa N side of Cerrito Creek at edge of mall E of Pierce St. Comment
  UC1784081  Eriastrum ertterae Barbara Ertter with Tony Morosco 1998-10-18 16441 Contra Costa Lime Ridge Open Space, in saddle SE of microwave towers on summit Comment
Read comments
Oct 13 2013
  UC1784904  Prunus avium Barbara Ertter with Dan Norris 1999-10-23 s. n. Contra Costa Huckleberry Botanic Regional Preserve, Oakland Hills, along lower loop trail Comment
  UC1784905  Prunus dulcis Barbara Ertter, Chris Thayer 1995-4-25 s. n. Contra Costa Sycamore Creek on SE foot of Mount Diablo Comment
  UC1784911  Calystegia subacaulis subsp. subacaulis Barbara Ertter with Elizabeth Neese 1988-4-24 7452 Contra Costa Black Diamond Mines Regional Preserve SW of Antioch, head of drainage between and parallel to Nortonville and Somersville roads Comment
  UC1784913  Camissoniopsis hirtella Barbara Ertter with Mary Bowerman 1994-6-19 12842 Contra Costa Mount Diablo State Park E of Walnut Creek; Muir Picnic Area on Summit Road 1005 Comment
  UC1784914  Tetrapteron graciliflorum Barbara Ertter 1992-11-1 11457 Contra Costa Skyline Trail E of Grizzly Peak Boulevard in Berkeley Hills, ca. 1/2 mi S of Tilden Park Miniature Train Station Comment
  UC1784916  Epilobium ciliatum subsp. ciliatum Barbara Ertter with Laura Fujii 1990-7-21 9401 Contra Costa Briones Regional Park, Briones Hills W of Pleasant Hill, at Bear Creek crossing on Homestead Valley trail 274 Comment
  UC1789147  Campsis radicans Barbara Ertter 1998-5-10 16370 Contra Costa southeast edge of Antioch Marina. Comment
  UC1789149  Aphanes occidentalis Barbara Ertter with David Gowen and Mike Park 2004-4-13 18347 Contra Costa Black Diamond Mines Regional Park south of Pittsburg, ca 1 km due east of Sidney Flat headquarters Comment
  UC1789151  Cinnamomum camphora Barbara Ertter 2001-5-26 17653 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch, two young individuals at base of river bank. Comment
  UC1789154  Viburnum ellipticum Barbara Ertter 2001-9-16 17808 Contra Costa Briones Regional Park, Toyon Canyon Trail, shaded west-facing slope with Ptelea. Comment
  UC1789160  Eriogonum fasciculatum Barbara Ertter 2001-9-3 17807 Contra Costa Sibley Volcanic Regional Park, area excavated for water tank on west side of Round Top, basaltic. Comment
  UC1789165  Rhamnus alaternus Barbara Ertter with Tony Morosco 1998-10-18 16431 Contra Costa NW slope of Lime Ridge Open Space just S of Ygnacio Valley Road, bottom of swale at fenceline Comment
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Apr 29 2013
  UC1789168  Phyllostachys aurea Barbara Ertter 2001-5-26 17652 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch, single well-established clump at base of river bank. Comment
  UC1789171  Rosa eglanteria Barbara Ertter 2001-11-3 17812 Contra Costa Tilden Regional Park, Selby Trail ca. 1/4 miles north of Lake Anza Comment
  UC1789175  Juncus gerardi Barbara Ertter, Steve Matson 2003-5-31 18175 Contra Costa Martinez Regional Shoreline, brackish marsh along Pickleweed Trail west of Arch Bridge, Comment
  UC1789178  Passiflora tarminiana Barbara Ertter 1999-9-17 16846 Contra Costa south edge of El Cerrito at northeast base of Albany Hill, edge of paved lot at southwest corner of junction San Pablo Avenue and Carlson Avenue, near Cerrito Creek. Comment
  UC1789185  Iris foetidissima Barbara Ertter 2000-5-20 17025 Contra Costa Sibley Volcanic Regional Preserve, Oakland Hills, trail on ridge behind interpretative center. Comment
  UC1789186  Iris foetidissima Barbara Ertter 2000-5-20 17025 Contra Costa Sibley Volcanic Regional Preserve, Oakland Hills, trail on ridge behind interpretative center. Comment
  UC1789187  Allium triquetrum Barbara Ertter 2000-5-20 17027 Contra Costa Sibley Volcanic Regional Preserve, Oakland Hills, accessible trail on ridge behind interpretative center. Locally established in understory of eucalyptus-oak-pine flores; onion-scented, flowers white. Comment
  UC1789196  Viburnum rigidum Barbara Ertter 2001-10-29 17810 Contra Costa Tilden Regional Park, Selby Trail and Wildcat Gorge upstream from Lake Anza, understory of mixed forest. Occasional lax shrub to 2--3 m tall. Comment
  UC1789204  Prunus dulcis Barbara Ertter with Dan Norris 2001-4-8 17602 Contra Costa Lime Ridge Open Space, main pit of W quarry area N of adjacent golf course 121 Comment
  UC1789206  Pistacia atlantica Barbara Ertter with Dan Norris 2001-4-8 17603 Contra Costa Lime Ridge Open Space, main pit of west quarry area N of adjacent golf course 121 Comment
  UC1789209  Eucalyptus rudis Barbara Ertter with Tony Morosco 1998-10-18 16427 Contra Costa Lime Ridge quarry area just south of Ygnacio Vally Road (area subsequently converted into housing development 121 Comment
  UC1789210  Eucalyptus globulus Barbara Ertter 2002-5-11 17840 Contra Costa lower Emmons Canyon just outside of Mount Diablo State Park boundary. Comment
  UC1789211  Eucalyptus globulus Barbara Ertter 2002-5-11 17840 Contra Costa lower Emmons Canyon just outside of Mount Diablo State Park boundary. Comment
  UC1789215  Eucalyptus tereticornis Barbara Ertter with Dan Norris 2001-4-8 17604 Contra Costa Lime Ridge Open Space, main pit of west quarry area north of adjacent golf course 121 Comment
  UC1789218  Eucalyptus tereticornis Barbara Ertter 1993-11-13 12318 Contra Costa Sibley Volcanic Regional Preserve in Oakland Hills S of Orinda, pine & eucalypt forest on south side of Round Top, ca 1500 ft.; locally established tree with peeling bark. Comment
  UC1795104  Asphodelus fistulosus Barbara Ertter, Tony Morosco 2000-4-12 16959 Contra Costa Vasco Road 0.4 miles north of Tesla Road southeast of Livermore; roadside. Comment
  UC1795111  Geranium rotundifolium Barbara Ertter 1996-6-4 14684 Contra Costa Tilden Regional Park in hills E of Berkeley, restoration site NE of junction of Grizzly Peak Boulevard and Golf Course Drive Comment
  UC1795633  Hedypnois rhagadioloides Barbara Ertter 1994-5-23 12809 Contra Costa Point Isabel at S end Richmond, Regional Shoreline and marsh at end of Rydin Road Comment
  UC1795635  Vicia sativa subsp. nigra Barbara Ertter, Chris Thayer 1995-4-25 14001 Contra Costa Southeast side of Mt. Diablo northeast of Danville, roadside at Curry Point. Comment
  UC1795639  Agrostis hallii Barbara Ertter, Mary Bowerman 1995-6-11 14256 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, bank of Indian Creek above Indian Valley Pond, partial sun on Franciscan layer. 76 Comment
  UC1795642  Pseudognaphalium luteoalbum Barbara Ertter, Drew Hansen 1995-3-28 13937 Contra Costa Chevron oil refinery in northwest Richmond off of Castro St. edge of levees thru created bioremediation marsh south of Wildcat Creek. Comment
  UC1795643  Pseudognaphalium luteoalbum Barbara Ertter, Drew Hansen 1995-3-28 13938 Contra Costa Chevron oil refinery in northwest Richmond off of Castro St. edge of levees thru created bioremediation marsh south of Wildcat Creek. Comment
  UC1795646  Dudleya farinosa Barbara Ertter, Brad Olson 1994-5-7 12763 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795647  Festuca rubra Barbara Ertter, Brad Olson 1994-5-7 12752 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795648  Ulmus minor Barbara Ertter, Rich Rabeler 1994-6-18 12837 Contra Costa Pt. Pinole Regional Shoreline at north end of Richmond; northeast corner of park, near jct. Marsh Trail & Cook's Point Trail. Comment
  UC1795649  Fraxinus dipetala Barbara Ertter, Brad Olson, Diane Lake, Seth Adams, et al. 1994-9-11 13081 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton, open oak woodland (Canyon live oak, blue oak, buckeye); north facing slope with local grove of Fraxinus, Aesculus, toyon. Comment
  UC1795652  Scandix pecten-veneris Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13947 Contra Costa Mount Diablo State Park, grassy field along road at base of Mitchell Canyon. Comment
  UC1795653  Stachys ajugoides var. rigida Barbara Ertter, Brad Olson 1994-5-7 12756 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795657  Cardamine hirsuta Barbara Ertter, Gary Schoolcraft 1996-4-7 14576 Contra Costa Molate Beach Park on San Francisco Bay north of San Rafael Bridge; south end of parking area, in partial shade of planted shrub. Comment
  UC1795660  Spergula arvensis subsp. arvensis Barbara Ertter, Gary Schoolcraft, Tony Morosco 1996-4-6 14565 Contra Costa Knobcone Point Road northeast of Knobcone Point in Mt Diablo State Park, near junction of north heading spur road, roadside in open oak woodland. Comment
  UC1795665  Trifolium dubium Barbara Ertter, Mary Bowerman et al. 1995-5-7 14023 Contra Costa Three Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road through annual grassland with scattered blue oak south of Marsh Creek Road summit. 304 Comment
  UC1795670  Echinochloa crus-galli Barbara Ertter, Kristin Ertter 1995-7-11 14486 Contra Costa West side of Mt Diablo; mudflat around inlet to Pine Pond. Comment
  UC1795671  Arceuthobium campylopodum Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14533 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, woods above ranch. 365 Comment
  UC1795672  Arctostaphylos glauca Barbara Ertter, Holly Forbes 1996-2-11 14548 Contra Costa North side Mount Diablo; Murchio Gap on Median Ridge Road, chaparral on serpentine-derived clay; regrowth after burn of several years previous 731 Comment
  UC1795674  Elymus trachycaulus subsp. trachycaulus Barbara Ertter, Holly Forbes 1996-2-11 14550 Contra Costa North side Mount Diablo; North Peak trail on east side on main peak, steep slope, openings among scrub oak, umbellularia. 1005 Comment
  UC1795693  Agrostis avenacea Barbara Ertter, Brad Olson 1994-5-7 12748 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795697  Briza maxima Barbara Ertter, Chris Thayer 1995-4-25 13999 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd at northeast FK of Sycamore Creek. 396 Comment
  UC1795710  Erodium brachycarpum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14044 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, grassy flat, roadside vegetation, clay substrate. Comment
  UC1795711  Spartium junceum Barbara Ertter, Gary Schoolcraft 1996-4-7 14582 Contra Costa Molate Beach Park on San Francisco Bay north of San Rafael Bridge; entrance to Western Drive from I-580 east of toll station on San Rafael-Richmond Bridge, road bank Comment
  UC1795720  Sagina apetala Barbara Ertter, Chris Thayer 1995-4-25 13991 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Devil's Slide area of Sycamore Canyon, roadside thru chaparral zone. 304 Comment
  UC1795724  Brachypodium distachyon Barbara Ertter, Mary Bowerman et al. 1995-5-7 14026 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road thru annual grassland with scattered blue oak south of Marsh Cr. Rd summit. 304 Comment
  UC1795725  Sherardia arvensis Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13941 Contra Costa Mount Diablo State Park, lower end of Mitchell Canyon south of Clayton, open oak woodland/grassland open flat area on east side of stream not far from trail head. 182 Comment
  UC1795726  Galium murale Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13942 Contra Costa Mount Diablo State Park, lower end of Mitchell Canyon south of Clayton, open oak woodland/grassland open flat area on east side of stream not far from trail head. 182 Comment
  UC1795727  Torilis nodosa Barbara Ertter, Mary Bowerman 1995-6-11 14254 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, bank of Indian Creek above Indian Valley Pond, partial sun on Franciscan layer. 76 Comment
  UC1795728  Clarkia affinis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14224 Contra Costa Mt. Diablo southeast of Walnut Creek, north-facing slope north of Curry Point, grassy semishade at edge of oak woodland. 518 Comment
  UC1795730  Soliva sessilis Barbara Ertter, Mary Bowerman et al. 1995-5-7 14041 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, damp road bed, clayey, in grassy flat south of pond, near edge of blue oak forest. Comment
  UC1795732  Lotus scoparius var. scoparius Barbara Ertter, Brad Olson 1994-5-7 12761 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795733  Eriophyllum staechadifolium Barbara Ertter, Brad Olson 1994-5-7 12759 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795734  Triteleia hyacinthina Barbara Ertter, Brad Olson 1994-5-7 12750 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795735  Antirrhinum majus Barbara Ertter, Brad Olson 1994-5-7 12744 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795739  Lathyrus latifolius Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14671 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; edge of coastal bluff and blacktop at northwest corner of area. Comment
  UC1795740  Phacelia breweri Barbara Ertter, Tom Delendick 1996-5-2 14611 Contra Costa Mount Diablo State Park, Deer Flat Road north of Juniper Camp, at cut through open live oak forest, northwest-facing slope. 853 Comment
  UC1795742  Spergularia bocconi Barbara Ertter, Mary Bowerman et al. 1995-5-7 14027 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road thru annual grassland with scattered blue oak south of Marsh Creek Road summit. 304 Comment
  UC1795743  Bromus sterilis Barbara Ertter, Mary Bowerman et al. 1995-5-7 14053 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, open oak forest above houses. Comment
  UC1795744  Vicia benghalensis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14220 Contra Costa Mt. Diablo southeast of Walnut Creek, roadside at Curry Point. 541 Comment
  UC1795745  Lepidium strictum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14051 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, middle of dirt road below houses, edge of blue oak. Comment
  UC1795750  Cytisus scoparius Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14678 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; grassland/scrub at northeast corner of area. Comment
  UC1795754  Lotus corniculatus Barbara Ertter, Kristin Ertter 1995-7-11 14473 Contra Costa Sulfur Spring on Pine Cr, Diablo Foothills Regional Park SW of Walnut Creek, marshy wet ground. 121 Comment
  UC1795755  Ranunculus sceleratus Barbara Ertter, Kristin Ertter 1995-7-11 14485 Contra Costa West side of Mt Diablo SW of Walnut Creek; mudflat around inlet to Pine Pond. Comment
  UC1795762  Hydrocotyle verticillata Barbara Ertter, Lincoln Constance 1995-6-16 14260 Contra Costa East edge Dow Marsh on west side Antioch Marina, south side San Joaquin River in Delta area, mud on riprap. Comment
  UC1795764  Anthriscus caucalis Barbara Ertter, Lisa Schultheis 1995-4-27 14015 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; north-facing open brushy slope with scattered oaks along extension of Valley View road. 182 Comment
  UC1795766  Pseudognaphalium luteoalbum Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14228 Contra Costa South side Mount Diablo, Sheepherder Springs complex 1/2 mile north of Curry Point, wet ground in grassland. 487 Comment
  UC1795770  Phoradendron macrophyllum Barbara Ertter, Brad Olson, Diane Lake, Seth Adams, et al. 1994-9-11 13085 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton, open oak woodland (Canyon live oak, blue oak, buckeye); north facing slope with local grove of Fraxinus, Aesculus, toyon. Comment
  UC1795771  Linum bienne Barbara Ertter, Brad Olson 1994-5-7 12746 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795773  Rumex salicifolius var. crassus Barbara Ertter, Brad Olson 1994-5-7 12762 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795775  Limonium sinuatum Barbara Ertter, Brad Olson 1994-5-7 12767 Contra Costa Western Drive to Point Molate north west of Richmond-San Rafael bridge toll plaza, roadside near entrance to Point Molate Naval site Comment
  UC1795778  Malva parviflora Barbara Ertter, Mary Bowerman 1995-6-11 14248 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, at west base Mt. Diablo.; annual grassland near Indian Valley School entrance, clay soil (planted Clarkia also present). 91 Comment
  UC1795780  Potamogeton filiformis Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14644 Contra Costa North Gate Road at northwest base of Mount Diablo, ''Tick Pond'' west of road toward Castle Rock. Comment
  UC1795792  Micropus californicus var. californicus Barbara Ertter, Mary Bowerman et al. 1995-5-7 14050 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, grassy flat, roadside vegetation, clay substrate. Comment
  UC1795793  Hedypnois rhagadioloides Barbara Ertter, Mary Bowerman 1995-6-11 14249 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, at west base Mt. Diablo.; annual grassland near Indian Valley School entrance, clay soil (planted Clarkia also present). 91 Comment
  UC1795794  Vicia villosa subsp. varia Barbara Ertter, Mary Bowerman 1995-6-11 14250 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, at west base Mt. Diablo.; annual grassland near Indian Valley School entrance, clay soil (planted Clarkia also present). 91 Comment
  UC1795796  Trifolium albopurpureum var. olivaceum Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14225 Contra Costa Mt. Diablo southeast of Walnut Creek, serpentine knoll ca 1/2 air-mile north of Curry Point. 487 Comment
  UC1795797  Pellaea mucronata var. mucronata Barbara Ertter, Mary L. Bowerman 1994-6-19 12856 a Contra Costa Mt. Diablo State Park east of Walnut Creek; scrub oak thicket north road, north of lower-summit parking lot, next to drainage on N. facing slope. Comment
  UC1795799  Centaurea melitensis Barbara Ertter, Mary L. Bowerman 1994-6-19 12844 Contra Costa Mt. Diablo State Park east of Walnut Creek; Muir Picnic Area on Summit Road, 1005 Comment
  UC1795812  Lupinus formosus var. formosus Barbara Ertter, Brad Olson 1994-5-7 12751 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795813  Dichondra donelliana Barbara Ertter, Brad Olson 1994-5-7 12745 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge. Comment
  UC1795814  Zostera marina Barbara Ertter, Brad Olson 1994-5-7 12766 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795815  Vulpia bromoides Barbara Ertter, Mary Bowerman et al. 1995-5-7 14025 Contra Costa Three Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road through annual grassland with scattered blue oak south of Marsh Creek Road summit. 304 Comment
  UC1795816  Pickeringia montana Barbara Ertter, Lisa Schultheis 1995-4-27 14019 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; head of west facing scrub-filled draw (east of golf-course). 182 Comment
  UC1795825  Nicotiana glauca Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14627 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC1795826  Vulpia myuros var. myuros Barbara Ertter, Mary Bowerman et al. 1995-5-7 14024 Contra Costa Three Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road through annual grassland with scattered blue oak south of Marsh Creek Road summit. 304 Comment
  UC1795838  Kickxia elatine Barbara Ertter 1995-9-30 14525 Contra Costa North bank of Cerrito Creek at end of Yosemite Avenue in El Cerrito, foot of Albany Hill; stonework bank at edge of overgrown sluggish creek. Comment
  UC1795840  Helianthus tuberosus Barbara Ertter 1995-9-30 14526 Contra Costa North bank of Cerrito Creek at end of Yosemite Avenue in El Cerrito, foot of Albany Hill; stonework bank at edge of overgrown sluggish creek. Comment
  UC1795843  Crypsis schoenoides Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14532 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. dried roadside pond, clay. Comment
  UC1795862  Hedera helix Barbara Ertter 1994-10-23 13915 Contra Costa Southwest El Cerrito, north edge Breuner's parking lot, northwest of Albany Hill. Comment
  UC1795879  Trifolium campestre Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14640 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; packed ground of trailside. Comment
  UC1795882  Danthonia californica var. californica Barbara Ertter, Brad Olson 1994-5-7 12754 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1795888  Phalaris aquatica Barbara Ertter, Rich Rabeler 1994-6-6 12823 Contra Costa Point Isabel in south Richmond; acacia copse at edge of bay at south side of point. Comment
  UC1795892  Trifolium depauperatum var. truncatum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14046 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, grassy flat, roadside vegetation, clay substrate. Comment
  UC1795893  Pogogyne serpylloides Barbara Ertter, Lisa Schultheis 1995-4-27 14017 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; head of west facing scrub-filled draw (east of golf-course). 182 Comment
  UC1795896  Logfia gallica Barbara Ertter, Chris Thayer 1995-4-25 13992 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Devil's Slide area of Sycamore Canyon, roadside thru chaparral zone. 304 Comment
  UC1818860  Spergula arvensis subsp. arvensis Barbara Ertter, Kristin Ertter 1995-7-11 14467 Contra Costa Diablo Foothills Regional Park, dried road bed at base of east-facing cliff. 121 Comment
  UC1818862  Bromus carinatus var. carinatus Barbara Ertter, Brad Olson 1994-5-7 12749 Contra Costa Send Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Intact coastal prairies above bluff just south of park, between road and bay, Comment
  UC1818865  Plantago major Barbara Ertter, Kristin Ertter 1995-7-11 14474 Contra Costa Sulfur Spring on Pine Cr, Diblo Foothill Regional Park, marshy wet ground. 121 Comment
  UC1818866  Plantago lanceolata Barbara Ertter, Kristin Ertter 1995-7-11 14475 Contra Costa Sulfur Spring on Pine Cr, Diblo Foothill Regional Park, marshy wet ground. 121 Comment
  UC1818872  Pelargonium inquinans Barbara Ertter, Brad Olson 1994-5-7 12757 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Openings, especially with seepage, near open brush. Comment
  UC1818873  Triglochin maritima Barbara Ertter, Brad Olson 1994-5-7 12765 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Edge of marsh. Comment
  UC1818876  Panicum miliaceum subsp. miliaceum Barbara Ertter 1995-8-19 14505 Contra Costa Edge of Cerrito Creek on north side of Albany Hill, south edge of El Cerrito; dense weeds at edge of sluggish water. Comment
  UC1818891  Vulpia microstachys var. ciliata Barbara Ertter, Mary Bowerman et al. 1995-5-7 14067 Contra Costa Three-Springs Creek, small serpentine patch at road junction, Comment
  UC1818893  Plectritis macrocera Barbara Ertter, Mary Bowerman et al. 1995-5-7 14068 Contra Costa Three-Springs Creek, small serpentine patch at road junction, Comment
  UC1818894  Trifolium bifidum var. bifidum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14066 Contra Costa Three-Springs Creek, small serpentine patch at road junction, Comment
  UC1818899  Clarkia gracilis subsp. gracilis Barbara Ertter, Mary Bowerman 1994-6-19 12853 a Contra Costa Mt. Diablo State Park east of Walnut Creek; scrub oak thicket north of road, north of lower summit parking lot, next to drainage on north facing slope. Comment
  UC1818900  Plectritis ciliosa subsp. ciliosa Barbara Ertter, Mary Bowerman 1994-6-19 12854 a Contra Costa Mt. Diablo State Park east of Walnut Creek; scrub oak thicket north of road, north of lower summit parking lot, next to drainage on north facing slope. Comment
  UC1818904  Collinsia heterophylla Barbara Ertter, Mary Bowerman 1994-6-19 12852 a Contra Costa Mt. Diablo State Park east of Walnut Creek; scrub oak thicket north of road, north of lower summit parking lot, next to drainage on north facing slope. Comment
  UC1818905  Cuscuta occidentalis Barbara Ertter, Mary Bowerman 1994-6-19 12850 a Contra Costa Mt. Diablo State Park east of Walnut Creek; lower Summit Parking Lot, opening in chaparral near radio tower, ca 3600'. Comment
  UC1818921  Euphorbia spathulata Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14222 Contra Costa Mt. Diablo southeast of Walnut Creek, north-facing slope north of Curry Point, grassy semishade at edge of oak woodland. 518 Comment
  UC1818923  Phalaris paradoxa Barbara Ertter, Mary Bowerman 1995-6-11 14251 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, at west base Mt. Diablo.; annual grassland near Indian Valley School entrance, clay soil (planted Clarkia also present). 91 Comment
  UC1818924  Lepidium strictum Barbara Ertter, Mary Bowerman 1995-6-11 14252 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, Kovar Trail roadbed near Indian Creek, annual grassland 76 Comment
  UC1818926  Clarkia affinis Barbara Ertter, Mary Bowerman 1995-6-11 14255 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, bank of Indian Creek above Indian Valley Pond, partial sun on Franciscan layer. 76 Comment
  UC1818927  Lilaeopsis masonii Barbara Ertter, Lincoln Constance 1995-6-16 14261 Contra Costa East edge Dow Marsh on west side Antioch Marina, south side San Joaquin River in Delta area, mud on riprap. Comment
  UC1818932  Rhamnus tomentella subsp. tomentella Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14593 Contra Costa East side of Mt. Diablo, mid-slope on Prospectors-Gap Rd. in solid brushland. Comment
  UC1818934  Hirschfeldia incana Barbara Ertter, Mary Bowerman et al. 1995-5-7 14022 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road thru annual grassland with scattered blue oak south of Marsh Cr. Rd summit. 304 Comment
  UC1818936  Spergularia rubra Barbara Ertter, Mary Bowerman et al. 1995-5-7 14043 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, damp road bed, clayey, in grassy flat south of pond, near edge of blue oak forest. Comment
  UC1818937  Agoseris heterophylla Barbara Ertter, Mary Bowerman et al. 1995-5-7 14049 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, grassy flat, roadside vegetation, clay substrate. Comment
  UC1818938  Sagina apetala Barbara Ertter, Mary Bowerman et al. 1995-5-7 14056 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, road behind honses traversing north facing slope, mixed forest with much undergrowth. Comment
  UC1818939  Poa bulbosa Barbara Ertter, Chris Thayer 1995-4-25 13986 Contra Costa Southeast side of Mt. Diablo northeast of Danville; shade of oak forest on Sycamore Creek near junction of path from Knobcone Point Rd. 396 Comment
  UC1818940  Barbarea orthoceras Barbara Ertter, Mary Bowerman 1994-6-19 12843 Contra Costa Mt. Diablo State Park east of Walnut Creek; Muir Picnic Area on Summit Road, ca. 3300'; roadside cut thru chaparral. Comment
  UC1818945  Sagina apetala Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13943 Contra Costa Mount Diablo State Park, lower end of Mitchell Canyon south of Clayton, oak woodland/grassland open flat area on east side of stream not far from trail head. 182 Comment
  UC1818948  Calystegia purpurata subsp. purpurata Barbara Ertter, volunteers 1996-5-11 14643 Contra Costa North Gate Road at northwest base of Mount Diablo, just barely inside state park boundary; along Little Pine Creek. 176 Comment
  UC1818956  Phalaris aquatica Barbara Ertter, Kristin Ertter 1995-7-11 14466 Contra Costa Pine Creek on west side of Mt. Diablo southwest of Walnut Creek. Trailhead at Castle Rock; dried grasslands. 121 Comment
  UC1818958  Trifolium hirtum Barbara Ertter, Kristin Ertter 1995-7-11 14479 Contra Costa Pine Creek on West side of Mt. Diablo southwest of Walnut Creek; partial shade of oak forest, road along Pine Cr. in Diablo Foothills Regional Park 152 Comment
  UC1818961  Echinochloa crus-galli Barbara Ertter 1995-8-19 14502 Contra Costa Edge of Cerrito Creek on north side of Albany Hill, south edge of El Cerrito; dense weeds at edge of sluggish water. Comment
  UC1818962  Polygonum persicaria Barbara Ertter 1995-8-19 14504 Contra Costa Edge of Cerrito Creek on north side of Albany Hill, south edge of El Cerrito; dense weeds at edge of sluggish water. Comment
  UC1818967  Paspalum dilatatum Barbara Ertter 1995-9-30 14523 Contra Costa North bank of Cerrito Creek at end of Yosemite Avenue in El Cerrito, foot of Albany Hill; stonework bank at edge of overgrown sluggish creek. Comment
  UC1818968  Aira caryophyllea Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14527 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. southeast of Clayton dried grasslands at base of trail. 304 Comment
  UC1818971  Brickellia californica Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14534 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, woods above ranch. 365 Comment
  UC1818972  Piperia michaelii Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 14536 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, in woods above ranch, north-facing slope. Comment
  UC1818974  Phoradendron macrophyllum Barbara Ertter, Lisa Schultheis, Laura Fujii 1995-12-30 14544 Contra Costa Mount Diablo, road to Black Hawk Ridge, open buckeye woodland on north side of ridge. Comment
  UC1818988  Cornus glabrata Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14538 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, at stream crossing north-facing slope. Comment
  UC1818990  Lupinus arboreus Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14670 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay, edge of coastal bluff on south side of Point Molate. Comment
  UC1818997  Leymus Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14629 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC1818998  Robinia pseudoacacia Barbara Ertter, Tom Delendick 1996-5-2 14616 Contra Costa Mount Diablo State Park, Mitchell Canyon parking area, downstream. 182 Comment
  UC1819000  Delphinium patens subsp. patens Barbara Ertter, Tom Delendick 1996-5-2 14614 Contra Costa Mount Diablo State Park, Deer Flat Road north of Juniper Camp, at cut through open live oak forest, northwest-facing slope. 853 Comment
  UC1819002  Clarkia gracilis subsp. gracilis Barbara Ertter, Tom Delendick 1996-5-2 14612 Contra Costa Mount Diablo State Park, Deer Flat Road north of Juniper Camp, at cut through open live oak forest, northwest-facing slope. 853 Comment
  UC1819004  Elymus trachycaulus subsp. trachycaulus Barbara Ertter, Mary L. Bowerman 1994-6-19 12855 a Contra Costa Mt. Diablo State Park east of Walnut Creek; scrub oak thicket north of road, north of lower summit parking lot, next to drainage on north facing slope. Comment
  UC1819005  Elymus trachycaulus subsp. trachycaulus Barbara Ertter, Mary L. Bowerman 1994-6-19 12851 a Contra Costa Mt. Diablo State Park east of Walnut Creek; lower Summit parking lot, opening in chaparral near radio tower, ca 3600'. Comment
  UC1819008  Polypogon interruptus Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14233 Contra Costa South side Mount Diablo, Sheepherder Springs complex 1/2 mile north of Curry Point, wet ground in grassland. 487 Comment
  UC1819021  Prunus dulcis Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14642 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; packed ground of trailside. Comment
  UC1819023  Lotus corniculatus Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14637 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC1819024  Polypogon interruptus Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14634 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC1819035  Sherardia arvensis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14243 Contra Costa South side Mount Diablo, Sloan Road between Curry Point and Curry Canyon, roadside in partial shade of oak forest on north-facing slope. 487 Comment
  UC1819038  Brachypodium distachyon Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14244 Contra Costa South side Mount Diablo, Sloan Road between Curry Point and Curry Canyon, roadside in partial shade of oak forest on north-facing slope. 487 Comment
  UC1819041  Logfia gallica Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14237 Contra Costa South side Mount Diablo, road to Sheepherders Springs 1/2 mile north of Curry Point from Sloan Road, clay at edge of grassland/woodland. 426 Comment
  UC1819042  Geranium dissectum Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14236 Contra Costa South side Mount Diablo, Sheepherder Springs complex 1/2 mile north of Curry Point, wet ground in grassland. 487 Comment
  UC1819046  Helianthella castanea Barbara Ertter, Lisa Schultheis 1995-4-27 14016 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; north-facing open brushy slope with scattered oaks along extension of Valley View road. 182 Comment
  UC1819053  Logfia filaginoides Barbara Ertter, Chris Thayer 1995-4-25 13994 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd. on north side Black Hawk Ridge. 548 Comment
  UC1819054  Helianthella castanea Barbara Ertter, Chris Thayer 1995-4-25 13995 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd. on north side Black Hawk Ridge. Comment
  UC1819057  Oemleria cerasiformis Barbara Ertter, Dale Sanders, Dan Norris 1994-3-26 12334 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road 30 Comment
  UC1819059  Trifolium variegatum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14047 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, grassy flat, roadside vegetation, clay substrate. Comment
  UC1819060  Trifolium albopurpureum var. olivaceum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14048 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, grassy flat, roadside vegetation, clay substrate. Comment
  UC1819070  Piptatherum miliaceum Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13940 Contra Costa Mount Diablo State Park, lower end of Mitchell Canyon south of Clayton, on east side of stream not far from trail head. 182 Comment
  UC1819074  Tetragonia tetragonoides Barbara Ertter, Drew Hansen 1995-3-28 13935 Contra Costa Chevron oil refinery in northwest Richmond off of Castro St., south of Wildcat Creek Comment
  UC1861827  Geranium molle Barbara Ertter, Chris Thayer 1995-4-25 13985 Contra Costa Southeast side of Mt. Diablo northeast of Danville; on Sycamore Creek near junction of path from Knobcone Point Rd. 396 Comment
  UC1926783 Image available Eriogonum nudum var. psychicola Barbara Ertter 1997-8-18 15766 Contra Costa Contra Costa County: Antioch Dunes on San Joaquin River east of Antioch. Comment
  UC1949081  Eleocharis acicularis Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19802 Contra Costa at upper (south) end of San Pablo Dam Reservoir northwest of Orinda; lower areas where recently inundated Comment
  UC1949082  Crassula aquatica Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19792 Contra Costa at upper (south) end of San Pablo Dam Reservoir northwest of Orinda Comment
  UC1949083  Carex pendula Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19797 Contra Costa at upper (south) end of San Pablo Dam Reservoir northwest of Orinda Comment
  UC1949084  Carex pendula Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19797 Contra Costa upper (south) end of San Pablo Dam Reservoir northwest of Orinda Comment
  UC1949095  Artemisia biennis Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19800 Contra Costa upper (south) end of San Pablo Dam Reservoir northwest of Orinda Comment
  UC1949201  Jaumea carnosa Barbara Ertter with Elizabeth Neese 1988-10-15 7975 Contra Costa W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue Comment
  UC1949268  Festuca microstachys Barbara Ertter 1991-5-5 9779 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, ridge E of Coal Canyon, N-facing slope Comment
  UC1949269  Leptosiphon ciliatus Barbara Ertter 1991-5-5 9781 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, ridge E of Coal Canyon; N-facing slope Comment
  UC1949288  Mentzelia affinis Barbara Ertter 1991-5-5 9773 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, S side of Rose Hill above Nortonville Pass Comment
  UC1950412  Stuckenia pectinata Barbara Ertter with Lynne Hosley 1991-9-22 10824 Contra Costa Lafayette Reservoir in hills SW of Lafayette, at E end of dam Comment
  UC1950413  Najas guadalupensis Barbara Ertter with Brad Olson 1991-9-28 10838 Contra Costa San Pablo Reservoir between Orinda and El Sobrante, at S end of reservoir Comment
  UC1950446  Pholistoma membranaceum Barbara Ertter 1992-3-8 10909 Contra Costa NE edge of Black Diamond Mines Regional Preserve, NE-heading canyon with steep loose sides ca 1/2 mi W of junction of Stewartville Trail and Frederickson Lane Comment
  UC1952819  Rosa californica Barbara Ertter with David Gowen 2010-11-17 20700 Contra Costa southeast part of Lime Ridge Open Space (City of Walnut Creek(, mid slope of east-facing drainage below Crystyl Ranch Trail ca 1/4 mi N of jct Paraiso Trail Comment
  UC1952822  Carex pendula Barbara Ertter with David Gowen 2010-11-17 20699 Contra Costa southeast part of Lime Ridge Open Space (City of Walnut Creek), lower end of east-facing drainage below Crystyl Ranch Trail ca 1/4 mi N of jct Paraiso Trail Comment
  UC1952849  Aloe striatula Barbara Ertter 2007-5-20 19027 Contra Costa Berkeley Hills SE of UC campus, along path north of Dwight Way extension at head of Panoramic Way Comment
  UC1980316  Calamintha sylvatica subsp. ascendens Barbara Ertter with David Gowen 2011-10-6 20918 Contra Costa Tilden Regional Park in hills east of Berkeley; lower Vollmer Peak Trail southeast of Big Spring picnic area Comment
  UC1980318  Sparaxis tricolor Barbara Ertter with C. Shafer, C. Davidson et al. 2011-4-23 20707 Contra Costa Mount Diablo State Park, Curry Point Comment
  UC1980320  Clinopodium vulgare Barbara Ertter with David Gowen 2011-10-6 20919 Contra Costa Tilden Regional Park in hills east of Berkeley, lower Vollmer Peak Trail southeast of Big Spring picnic area Comment
  UC2012969  Prunus cerasifera Barbara Ertter with Tony Morosco 1996-7-27 15033 Contra Costa Mount Diablo State Park, lower Donner Creek at old cabin site. Comment
  UC2012971  Eriogonum gracile Barbara Ertter with Tony Morosco 1996-7-27 15040 Contra Costa Mount Diablo State Park, Cardinet Oaks Road at crossing of Donner Creek. Comment
  UC2012982  Rumex salicifolius var. salicifolius Barbara Ertter with Tony Morosco 1996-7-27 15030 Contra Costa Mount Diablo State Park, Donner Creek ca halfway between Regency Drive trailhead and old cabin site Comment
  UC2012983  Eschscholzia californica Barbara Ertter with Tony Morosco 1996-7-27 15039 Contra Costa Mount Diablo State Park, Cardinet Oaks Road at crossing of Donner Creek. Comment
  UC2012987  Eucalyptus globulus Barbara Ertter with Tony Morosco 1996-7-27 15029 Contra Costa Mount Diablo State Park, north foot of mountain between Donner Canyon and Back Creek Road. Comment
  UC2012988  Hirschfeldia incana Barbara Ertter with Tony Morosco 1996-7-27 15041 Contra Costa Mount Diablo State Park, Cardinet Oaks Road at crossing of Donner Creek. Comment
  UC2013031  Galium parisiense Barbara Ertter with Travis Columbus 1990-6-10 9107 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; above junction of Spengler and Blue Oaks trails. Comment
  UC2013032  Helianthella castanea Barbara Ertter with Travis Columbus 1990-6-10 9107 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; E-facing steep hillside above junction of Spengler and Blue Oaks trails. Comment
  UC2013035  Grindelia hirsutula Barbara Ertter with Travis Columbus 1990-6-10 9099 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; trail heading down ridge on N side of Briones Peak, at junction with Spengler Trail. Comment
  UC2013051  Polypogon interruptus Barbara Ertter with Tony Morosco 1996-7-27 15031 Contra Costa Mount Diablo State Park, Donner Creek ca halfway between Regency Drive trailhead and old cabin site. Comment
  UC2013057  Symphyotrichum subulatum Barbara Ertter with CNPS 1990-9-16 9645 Contra Costa NE Contra Costa Co.: Bethel Island NE of Brentwood, E end of Gateway Road at W edge of Franks Tract State Recreation Area. Comment
  UC2027718  Scrophularia californica Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15520 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027719  Berberis aquifolium var. dictyota Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15515 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027720  Trifolium variegatum Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15514 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027721  Mimulus guttatus Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15513 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027723  Orobanche uniflora Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15511 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027725  Stellaria pallida Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15508 a Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027728  Stellaria pallida Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15508 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027729  Leptosiphon bicolor Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15507 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027730  Ranunculus canus Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15505 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2028083  Lupinus microcarpus var. microcarpus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16120 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, quarry area on west side. Comment
  UC2028281  Acmispon wrangelianus Barbara Ertter with Brad Olson 1994-5-7 12760 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay Comment
  UC2028282  Raphanus sativus Barbara Ertter 1998-6-20 16246 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, roadside near Old Borges Ranch. Comment
  UC2028283  Euphorbia oblongata Barbara Ertter 1998-6-20 16245 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, roadside near Old Borges Ranch. Comment
  UC2028284  Myoporum laetum Barbara Ertter 1998-6-20 16240 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, along path just outside Wiget Lane entrance. Comment
  UC2028285  Juncus balticus Barbara Ertter 1998-6-20 16238 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Alkali Pond at Wiget Lane entrance. Comment
  UC2028286  Trifolium variegatum var. variegatum Barbara Ertter 1998-6-20 16237 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Alkali Pond at Wiget Lane entrance. Comment
  UC2028287  Sonchus asper Barbara Ertter 1998-6-20 16235 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Alkali Pond at Wiget Lane entrance. Comment
  UC2028289  Hesperolinon californicum Barbara Ertter with Dan Norris 1998-6-18 16228 Contra Costa Black Hawk Ridge Road below Knobcone Point Road, south side of Mount Diablo. Comment
  UC2028290  Trillium chloropetalum Barbara Ertter with Dan Norris 1998-6-18 16227 Contra Costa Junction of W Fork Sycamore Creek (= Madrone Canyon) and Sycamore Creek Road. Comment
  UC2028291  Heuchera micrantha Barbara Ertter, Dan Norris 1998-6-18 16226 Contra Costa Lower Devil's Slide trail along W Fork Sycamore Creek (madrone Canyon), south side of Mount Diablo. Comment
  UC2028333  Thysanocarpus curvipes subsp. elegans Barbara Ertter 1991-5-5 9777 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, ridge E of Coal Canyon Comment
  UC2028335  Penstemon centranthifolius Barbara Ertter 1991-5-5 9775 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, S side of Rose Hill above Nortonville Pass Comment
  UC2028347  Camissonia contorta Barbara Ertter 1991-5-5 9780 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, ridge E of Coal Canyon, N-facing slope Comment
  UC2028372  Juncus bufonius var. bufonius Barbara Ertter 1998-6-20 16234 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo. Alkali Pond at Wiget Lane entrance. Comment
  UC2028376  Schoenoplectus pungens var. longispicatus Barbara Ertter 1998-6-20 16239 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo. Alkali Pond at Wiget Lane entrance. Comment
  UC2028377  Paspalum dilatatum Barbara Ertter 1998-6-20 16241 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Bob Pond at Old Borges Ranch Comment
  UC2028378  Polypogon viridis Barbara Ertter 1998-6-20 16242 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Bob Pond at Old Borges Ranch Comment
  UC2028380  Stipa lepida Barbara Ertter 1998-6-20 16243 a Contra Costa Shell Ridge Open Space on NW side of Mount Diablo,below picnic ground at Old Borges Ranch Comment
  UC2028381  Lemna minor Barbara Ertter 1998-6-20 16244 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Bob Pond at Old Borges Ranch Comment
  UC2028382  Stuckenia pectinata Barbara Ertter 1998-6-20 16251 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Gypsy Flat Pond SW of Old Borges Ranch. Also in Joaquin Pond Comment
  UC2028383  Phalaris paradoxa Barbara Ertter 1998-6-20 16253 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, central grasslands Comment
  UC2028385  Elymus triticoides Barbara Ertter 1998-6-20 16255 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, wet margin of Willow Spring Pond south of Ginder Gap Comment
  UC2028386  Polypogon viridis Barbara Ertter 1998-6-20 16256 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, wet margin of Willow Spring Pond south of Ginder Gap Comment
  UC2028402  Melica torreyana Barbara Ertter with Christopher Baysdorfer 1998-5-10 16122 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, quarry area on west side Comment
  UC2028403  Stipa pulchra Barbara Ertter with Christopher Baysdorfer 1998-5-10 16121 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, quarry area on west side Comment
  UC2028404  Bromus diandrus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16113 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, along Ohlone Trail Comment
  UC2028406  Lithophragma bolanderi Barbara Ertter with Christopher Baysdorfer 1998-5-10 16109 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, along Ohlone Trail Comment
  UC2028416  Stuckenia striata Barbara Ertter with Brad Olson, Dianne Lake, Lynne Hosley and A. Youngson 1991-10-20 10866 Contra Costa Dow Wetlands Preserve, just W of Antioch marina Comment
  UC2028424  Crocosmia X crocosmiiflora Barbara Ertter 1996-9-19 15291 Contra Costa Cerrito Creek at base of Albany Hill, just west of San Pablo Avenue Comment
  UC2028426  Schoenoplectus americanus Barbara Ertter 1996-9-19 15294 Contra Costa Antioch Marina Comment
  UC2028427  Leersia oryzoides Barbara Ertter 1996-9-19 15297 Contra Costa Antioch Marina, edge of Dow Marsh lands Comment
  UC2028428  Juncus articulatus Barbara Ertter 1996-9-19 15300 Contra Costa Antioch Marina, edge of bay in Dow Marsh lands Comment
  UC2028431  Oenothera biennis Barbara Ertter 1996-9-28 15311 Contra Costa El Cerrito Creek, Creekside Park along Cerrito Creek at base of Albany Hill. Comment
  UC2028433  Eleocharis parishii Barbara Ertter with Chris Thayer 1996-10-25 15350 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothill Regional Park Comment
  UC2028434  Helianthus californicus Barbara Ertter with Chris Thayer 1996-10-25 15351 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothill Regional Park Comment
  UC2028435  Epilobium densiflorum Barbara Ertter with Chris Thayer 1996-10-25 15352 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothill Regional Park Comment
  UC2028436  Piptatherum miliaceum Barbara Ertter with Chris Thayer 1996-10-25 15353 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  UC2028437  Phalaris aquatica Barbara Ertter with Chris Thayer 1996-10-25 15354 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  UC2028438  Ficus carica Barbara Ertter with Chris Thayer 1996-10-25 15356 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  UC2028439  Phoenix Barbara Ertter with Chris Thayer 1996-10-25 15357 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  UC2028440  Leptochloa fusca subsp. fascicularis Barbara Ertter with Chris Thayer 1996-10-25 15363 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  UC2028441  Echinochloa crus-galli Barbara Ertter with Chris Thayer 1996-10-25 15364 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  UC2028442  Eragrostis mexicana subsp. virescens Barbara Ertter with Chris Thayer 1996-10-25 15365 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  UC2028445  Panicum dichotomiflorum Barbara Ertter with Chris Thayer 1996-10-25 15377 Contra Costa West side of Mount Diablo, North Gate Road 3 road miles below junction, near Mineral Spring Comment
  UC2028446  Echinochloa crus-galli Barbara Ertter with Chris Thayer 1996-10-25 15378 Contra Costa West side of Mount Diablo, North Gate Road 3 road miles below junction, near Mineral Spring Comment
  UC2028452  Cotula coronopifolia Barbara Ertter with Joanne Kerbavaz 2000-8-20 17503 Contra Costa Frog Pond on southeast side of Mount Diablo Comment
  UC2028453  Crassula aquatica Barbara Ertter with Joanne Kerbavaz 2000-8-20 17506 Contra Costa Hidden Pond on south side of Mount Diablo Comment
  UC2028454  Stuckenia pectinata Barbara Ertter with Joanne Kerbavaz 2000-8-20 17507 Contra Costa Hidden Pond on south side of Mount Diablo Comment
  UC2028463  Solanum americanum Barbara Ertter with Mary Bowerman 1996-11-1 15395 Contra Costa North base of Mount Diablo, downstream from Mitchell Canyon parking lot Comment
  UC2028466  Cynosurus echinatus Barbara Ertter 1997-8-24 15769 Contra Costa Southwest side of Mount Diablo, Rock City area Comment
  UC2028467  Bromus tectorum Barbara Ertter 1997-8-24 15775 Contra Costa Mount Diablo, around summit Comment
  UC2028468  Echinochloa colona Barbara Ertter 1997-8-24 15776 Contra Costa Mount Diablo, Summit Road just above Junction Station Comment
  UC2028469  Eragrostis mexicana subsp. virescens Barbara Ertter 1997-8-24 15777 Contra Costa Mount Diablo, Summit Road just above Junction Station Comment
  UC2028525  Calamagrostis rubescens Barbara Ertter 1997-11-1 15881 Contra Costa South side Mount Diablo, near Balancing Rock on Knobcone Point Road Comment
  UC2028551  Myriopteris covillei Barbara Ertter 1997-8-19 15774 Contra Costa Mount Diablo, SE side of Peak on Mary Bowerman/Fire Interpretive Trail Comment
  UC2028552  Dryopteris arguta Barbara Ertter 1997-9-7 15795 Contra Costa North side Mount Diablo, Donner Creek crossing at south end of Hetherington Trail Comment
  UC2028559  Paspalum distichum Barbara Ertter with Chris Thayer 1996-10-25 15366 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothill Regional Park. Comment
  UC2028568  Callitriche trochlearis Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15516 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2028569  Pleuropogon californicus Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15517 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2028570  Triglochin scilloides Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15518 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2028571  Quercus palmeri Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15519 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2028572  Festuca microstachys Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15521 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2028588  Juncus oxymeris Barbara Ertter 1996-9-19 15299 Contra Costa Antioch Marina, edge of Dow Marsh lands. Comment
  UC2029092  Salicornia depressa Barbara Ertter 1990-9-30 9656 Contra Costa Point Pinole Regional Shoreline on SW corner of park; edge of San Pablo Bay. Comment
  UC2029095  Urospermum picroides Barbara Ertter 1990-6-18 9133 Contra Costa Tilden Regional Park, along Nimitz hiking/bicycle trail near Inspiration Point Comment
  UC2029096  Acacia cyclops Barbara Ertter 1990-10-14 9660 Contra Costa Point Isabel Regional Shoreline on San Francisco Bay in SW El Cerrito, at end of Rydin Road. Comment
  UC2029106  Atriplex semibaccata Barbara Ertter 1990-9-30 9655 Contra Costa SE of Hilltop Mall in N Richmond, near Day's Inn. Comment
  UC2029107  Jaumea carnosa Barbara Ertter 1990-9-30 9657 Contra Costa Point Pinole Regional Shoreline on San Pablo Bay, north Richmond; SW corner of park. Comment
  UC2029108  Lepidium didymum Barbara Ertter 1990-5-15 8991 Contra Costa South El Cerrito, north foot of Albany Hill at end of Yosemite Avenue cul-de-sac. Comment
  UC2029110  Lupinus formosus var. formosus Barbara Ertter with Travis Columbus 1990-6-10 9116 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill, SE of Alhambra Valley staging area Comment
  UC2029121  Scutellaria tuberosa Barbara Ertter with David Gowen and Mike Park 2004-4-13 18352 Contra Costa Black Diamond Mines Regional Park south of Pittsburg, trail system in chaparral/woodland S of Somersville townsite. Comment
  UC2029123  Psilocarphus tenellus Barbara Ertter with David Gowen 2012-4-19 21319 Contra Costa Diablo Foothills Regional Park southeast of Walnut Creek, north end Hanging Valley Trail. Comment
  UC2029125  Calystegia subacaulis Barbara Ertter with David Gowen 2013-4-9 21308 Contra Costa Mount Diablo State Park southeast of Walnut Creek, ridge in bend of South Gate Road at Curry Point. Comment
  UC2029131  Blepharizonia plumosa Barbara Ertter 2003-7-6 18242 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, south end of Carbondale Trail. Comment
  UC2029152  Oenothera deltoides subsp. cognata Barbara Ertter, Chris Thayer 1994-5-19 12782 Contra Costa Highway 4 between Brentwood and Oakley at Honey Lane (halfway between Cypress Rd. and Delta Rd.) Comment
  UC2029153  Ranunculus lobbii Barbara Ertter with Mary Bowerman 1995-5-7 14035 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton. Comment
  UC2029161  Stipa miliacea var. miliacea Barbara Ertter, CNPS 1990-11-11 9709 Contra Costa Carquinez Straits Regional Park east of Crockett. Comment
  UC2029165  Salsola soda Barbara Ertter 1990-9-30 9659 Contra Costa NW CONTRA COSTA CO.: Point Pinole Regional Shoreline on San Pablo Bay, north Richmond; edge of salicornia marsh on N edge of park. Comment
  UC2029169  Juncus xiphioides Barbara Ertter 2000-7-16 17407 Contra Costa Pine Creek on WNW base of Mount Diablo Comment
  UC2029170  Verbena lasiostachys var. scabrida Barbara Ertter 2000-7-16 17409 Contra Costa Pine Creek on WNW base of Mount Diablo. Comment
  UC2029171  Verbena lasiostachys var. scabrida Barbara Ertter 2000-7-16 17409 Contra Costa Pine Creek on WNW base of Mount Diablo. Comment
  UC2029180  Geranium purpureum Barbara Ertter with California Botanical Society field trip 2013-4-12 21312 Contra Costa Mount Diablo State Park southeast of Walnut Creek, along east fork Sycamore Creek, roadside of Sycamore Creek road. Comment
  UC2029185  Delphinium hesperium Barbara Ertter 2000-5-14 17004 Contra Costa Donner Canyon on north side of Mount Diablo, junction of Donner Canyon, Cardinet Oaks, and Meridian Ridge Roads. Comment
  UC2029189  Juncus balticus Barbara Ertter with Brad Olson et al. 2000-6-2 17308 Contra Costa Brushy Peal Regional Preserve NE of Livermore Comment
  UC2029190  Bolboschoenus maritimus Barbara Ertter with Brad Olson et al. 2000-6-2 17307 Contra Costa Brushy Peal Regional Preserve NE of Livermore Comment
  UC2029191  Stipa pulchra Barbara Ertter with Brad Olson et al. 2000-6-2 17298 Contra Costa North side Brushy Peak Regional Preserve NE of Livermore Comment
  UC2029197  Carex serratodens Barbara Ertter with Michelle Lee et al. 2002-6-29 17964 Contra Costa Lower Curry Creek on east side of Mount Diablo, private property just above Morgan Territory Comment
  UC2029199  Carex tumulicola Barbara Ertter 2003-2-8 18094 Contra Costa Richmond Field Station (UC-Berkeley) Comment
  UC2029201  Agrostis exarata Barbara Ertter 1999-7-17 16763 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Rifle Range Road Comment
  UC2031402  Ribes amarum Barbara Ertter with David Gowen and Steve Matson 2007-3-17 18788 Contra Costa Huckleberry Botanic Regional Preserve in East Bay Hills above Montclair, dog-leg of Skyline Regional Trail at junction with trail from Pinehurst Road at base of canyon of upper San Leandro Creek Comment
  UC2031409  Calystegia subacaulis Barbara Ertter 2002-5-16 17856 Contra Costa Richmond Field Station (UC Berkeley), relict coastal grassland at end of Lark Lane Comment
  UC2031410  Ulmus minor Barbara Ertter 1993-4-2 11479 Contra Costa Carquinez Regional Park below Vista Road west of Crockett Comment
  UC2031415  Scribneria bolanderi Barbara Ertter with David Gowen 2006-4-14 18669 Contra Costa Lime Ridge Open Space (City of Concord) at NW foot of Mt Diablo, SE of Ygnacio Valley Road Comment
  UC2031422  Calochortus albus Barbara Ertter 1991-6-1 10086 Contra Costa Las Trampas Regional Wilderness in hills W of Danville, Elderberry Trail ca. 1/2 mi from trailhead Comment
  UC2031423  Clarkia modesta Barbara Ertter with David Gowen 2007-5-13 19015 Contra Costa Mount Diablo, W end Prospectors Gap Road just E of of junction Meridian Ridge Road Comment
  UC2031424  Leptosiphon androsaceus Barbara Ertter 1991-6-1 10085 Contra Costa Las Trampas Regional Wilderness in hills W of Danville, Elderberry Trail ca. 1/2 mi from trailhead Comment
  UC2031430  Calochortus luteus Barbara Ertter 1991-6-1 10079 Contra Costa Las Trampas Regional Wilderness in hills W of Danville Comment
  UC2031431  Callitriche marginata Barbara Ertter with David Gowen 2006-6-6 18677 Contra Costa Upper San Leandro Reservoir Watershed (EBMUD) south Moraga Comment
  UC2031432  Calystegia subacaulis Barbara Ertter 2002-5-11 17843 Contra Costa Wall Point on southwest flank of Mount Diablo. Comment
  UC2031433  Helianthella castanea Barbara Ertter 1991-6-1 10074 Contra Costa Las Trampas Regional Wilderness in hills W of Danville Comment
  UC2031434  Lonicera hispidula Barbara Ertter 1991-6-1 10070 Contra Costa Las Trampas Regional Wilderness in hills W of Danville Comment
  UC2031442  Eurybia radulina Barbara Ertter 1990-11-11 9710 Contra Costa NW Contra Costa County: Carquinez Straits Regional Park east of Crockett Comment
  UC2031444  Stephanomeria elata Barbara Ertter with Brad Olson 1991-10-13 10856 Contra Costa SW corner of Point Richmond Comment
  UC2031455  Anagallis arvensis Barbara Ertter with David Gowen, Mike Park, Chris Thayer et al. 2014-4-12 21711 Contra Costa South tributary of Perkins Canyon at Prospectors Gap Road, Ginochio property on east side of Mount Diablo Comment
  UC2031458  Gilia achilleifolia subsp. achilleifolia Barbara Ertter with David Gowen 2014-4-12 21716 Contra Costa On north side of Prospectors Gap Road ca. 1 mile east of Mount Diablo summit Comment
  UC2031459  Cirsium occidentale var. californicum Barbara Ertter with David Gowen, Mike Park, Chris Thayer et al. 2014-4-12 21710 Contra Costa North side of Rhine Canyon Road, Ginochio property on east side of Mount Diablo Comment
  UC2031460  Monolopia gracilens Barbara Ertter with David Gowen 2014-4-12 21715 Contra Costa Ridge on north side of Prospectors Gap Road, ca 1 mile east of Mount Diablo summit Comment
  UC2031461  Quercus palmeri Barbara Ertter with David Gowen, Mike Park, Chris Thayer et al. 2014-4-12 21719 Contra Costa Ca. 2 air miles east of Mount Diablo summit, upper end of road to Wright Canyon below powerline on Ginochio property Comment
  UC2031466  Carex praegracilis Barbara Ertter with Brad Olson 1991-11-10 10886 Contra Costa Point San Pablo in extreme west of Richmond Comment
  UC2031467  Alnus rhombifolia Barbara Ertter with Brad Olson, Dianne Lake, Lynne Hosley and A. Youngson 1991-10-20 10861 Contra Costa Dow Wetlands Preserve, just W of Antioch marina Comment
  UC2031478  Pseudognaphalium beneolens Barbara Ertter with CNPS 1990-8-19 9620 Contra Costa E side of S end of Briones Reservoir N of Orinda along Bear Creek trail on EBMUD land Comment
  UC2031491  Cheilanthes Barbara Ertter with David Gowen 2014-4-12 21718 Contra Costa On north side of Prospectors Gap Road ca 1 mile east of Mount Diablo summit, burnt in previous year's fire Comment
  UC2042751  Myriophyllum verticillatum Barbara Ertter with Lynne Hosley 1991-9-22 10822 Contra Costa Lafayette Reservoir in hills SW of Lafayette, in water at E end of dam. Comment
  UC2042770  Layia gaillardioides Barbara Ertter with Chris Thayer 1993-5-7 11706 Contra Costa Ca 1/2 mile north of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land east of Tilden Park. Comment
  UC2042772  Stuckenia pectinata Barbara Ertter with Lynne Hosley 1992-8-29 11268 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, stock pond near junction of Eagle and Volvon trails at north end of preserve. Comment
  UC2042775  Potamogeton berchtoldii Barbara Ertter with Lynne Hosley 1992-8-29 11267 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, stock pond near junction of Eagle and Volvon trails at north end of preserve. Comment
  UC2042776  Quercus X morehus Barbara Ertter with Lynne Hosley 1992-8-29 11264 a Contra Costa Morgan Territory Regional Preserve east of Mount Diablo. Comment
  UC2042778  Epilobium brachycarpum Barbara Ertter 1990-9-10 9637 Contra Costa Briones Regional Park, Briones Hills S of Martinez, eroded N-facing draw between Sindicich and Maricich lagoons. Comment
  UC2042780  Quercus kelloggii Barbara Ertter with Travis Columbus 1990-6-10 9115 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill, SE Alhambra Valley staging area Comment
  UC2042781  Solanum umbelliferum Barbara Ertter with Travis Columbus 1990-6-10 9109 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill, on Spengler Trail NE of Briones Peak Comment
  UC2042783  Acacia dealbata Barbara Ertter with John Little 1989-4-2 8102 Contra Costa Hillside Park in El Cerrito. Comment
  UC2042800  Atriplex prostrata Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10871 Contra Costa Dow Wetlands Preserve just W of Antioch marina. Comment
  UC2042880  Symphyotrichum lentum Barbara Ertter, B. Olson, D. Lake, L. Hosley and A. Youngson 1991-10-20 10860 Contra Costa Dow Wetland Preserve, just W of Antioch. Comment
  UC2042941  Pyracantha angustifolia Barbara Ertter 1991-5-12 9811 Contra Costa Point Isabel Regional Shoreline in SW corner of El Cerrito, on San Francisco Bay. Comment
  UC2042945  Epilobium canum subsp. canum Barbara Ertter with Laura Fujii 1989-10-29 8895 Contra Costa Las Trampas Regional Wilderness W of Danville. Comment
  UC2042946  Apiastrum angustifolium Barbara Ertter with David Gowen 2014-4-12 21714 Contra Costa Ridge on north side of Prospectors Gap Road ca. 1 mile east of Mount Diablo summit. Comment
  UC2042953  Calystegia subacaulis Barbara Ertter with David Gowen 2012-6-9 21021 Contra Costa Seaview Trail north of Vollmer Peak, southeastern Tilden Park in Berkeley Hills. Comment
  UC2042955  Dittrichia graveolens Barbara Ertter with David Gowen, Mike Park and Abby Moore 2006-11-24 18785 Contra Costa Mt Diablo State Park, Live Oak Campground. Comment
  UC2042960  Pentachaeta alsinoides Barbara Ertter with David Gowen 2006-6-6 18676 Contra Costa Upper San Leandro Reservoir Watershed (EBMUD) south of Moraga. Comment
  UC2042961  Arctostaphylos tomentosa subsp. crustacea Barbara Ertter with Chris Thayer, David Gowen, Kim Kersh 2007-2-11 18787 Contra Costa Flicker Ridge SE of Canyon, NW of junction Pinehurst and Canyon-Moraga roads. Comment
  UC2042963  Cryptantha muricata Barbara Ertter with David Gowen and Chris Thayer 2014-4-12 21712 Contra Costa Small ridge on north side of Prospectors GAp Road, just north of Ginochio property on east side of Mount Diablo. Comment
  UC2042966  Quercus berberidifolia Barbara Ertter, Brad Olson, Diane Lake, Seth Adams, et al. 1994-9-11 13092 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton. Comment
  UC2042983  Navarretia pubescens Barbara Ertter with Dan Norris 1998-6-18 16216 Contra Costa Rock City area on south side of Mount Diablo, trail to Artist Point Comment
  UC2042985  Navarretia atractyloides Barbara Ertter with Tony Morosco 1998-9-18 16437 Contra Costa North side Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2043025  Ranunculus lobbii Barbara Ertter with David Gowen 2006-3-1 18665 Contra Costa Upper San Leandro Reservoir Watershed (EBMUD) south Moraga, shallow small pond along SE end of Rocky Ridge Road as it drops to King Canyon Road. Comment
  UC2043054  Symphyotrichum lanceolatum var. hesperium Barbara Ertter with Brad Olson 1991-9-28 10851 Contra Costa S end San Pablo Reservoir between Orinda and El Sobrante. Comment
  UC2043055  Carex praegracilis Barbara Ertter with Brad Olson 1991-9-28 10853 Contra Costa S end San Pablo Reservoir between Orinda and El Sobrante. Comment
  UC2043056  Spergularia villosa Barbara Ertter with Brad Olson 1991-10-13 10855 Contra Costa SW corner of Point Richmond, hillside across road from George Miller Jr. Regional Park. Comment
  UC2043172  Downingia insignis Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8116 Contra Costa SE Contra Costa Co., Alkali sink W and adjacent to Clifton Cout Forebay, ca 15 air miles SW of Stockton. Comment
  UC2043241  Pteridium aquilinum var. pubescens Barbara Ertter with David Gowen 2015-2-22 22227 Contra Costa Alder Creek below Green Ranch at road crossing, Mount Diablo SE of summit. Comment
  UC2043258  Lupinus albifrons var. collinus Barbara Ertter with Dianne Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14674 Contra Costa Point Molate Navel Fuel Depot north of San Rafael bridge, edge of San Francisco Bay. Comment
  UC2046368  Parthenocissus inserta Barbara Ertter 2015-10-9 22455 Contra Costa East edge of Dow Marsh along walkway west of Antioch marina on San Joaquin River delta. Comment
  UC2046369  Juncus usitatus Barbara Ertter 2015-10-9 22456 Contra Costa N end of walkway on east edge of Dow Marsh west of Antioch marina on San Joaquin River Delta. Comment
  UC2062431  Luzula macrantha Barbara Ertter with David Gowen 2013-4-9 21309 Contra Costa Mount Diablo State Park southeast of Walnut Creek, Sulfur Spring/Devils Slide Trail southeast of Curry Point. Comment
  UC2062460  Anemopsis californica Barbara Ertter with David Gowen and Mike Park 2004-6-13 18374 Contra Costa Black Diamond Mines Regional Preserve, just downstream from old homestead on west side of Old Homestead Loop. Comment
  UC2062608  Euphorbia spathulata Barbara Ertter with David Gowen, Mike Park, Wilde Legard 2004-4-13 18345 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, east of River View Loop Trail, over saddle east of park headquarters at Sidney Flat Comment
  UC2062621  Anagallis arvensis Barbara Ertter with Joanne Kerbavaz et al. 2003-5-8 18173 Contra Costa South Gate Road on south side of Mount Diablo. Comment
  UC2062631  Claytonia parviflora subsp. parviflora Barbara Ertter with David Gowen, Mike Park 2004-4-13 18353 Contra Costa Black Diamond Mines Regional Park south of Pittsburg, S of Somersville townsite, Chaparral Loop Trail just across footbridge from Manhattan Trail cut-off. Comment
  UC2062639  Baccharis douglasii Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19796 Contra Costa Mudflats at upper (south) end of San Pablo Dam Reservoir northwest of Orinda. Comment
  UC2062640  Rorippa palustris subsp. palustris Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19799 Contra Costa Mudflats at upper (south) end of San Pablo Dam Reservoir northwest of Orinda. Comment
  UC2062641  Rorippa curvipes Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 197801 Contra Costa Mudflats at upper (south) end of San Pablo Dam Reservoir northwest of Orinda. Comment
  UC2062687  Ranunculus occidentalis Barbara Ertter with David Gowen 2013-4-19 21317 Contra Costa Southwestern Mount Diablo State Park southeast of Walnut Creek, lower end of Little Yosemite Trail. Comment
  UC2070524  Epipactis gigantea Barbara Ertter with David Gowen, J. Ginochio, M. Park, S. Matson, A. Moore, S. D'Alcamo, J. Greenhouse, K. Kersh and J. Gawthrup 2005-5-8 18565 Contra Costa Long Ridge on west side of Mount Diablo, stringer below Moses Rock Spring on Burma Road. Comment
  UC2070546  Spergularia marina Barbara Ertter with David Gowen and Michael Park 2017-5-2 22811 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road Comment
  UC2070547  Spergularia bocconi Barbara Ertter with David Gowen and Michael Park 2017-5-2 22805 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road Comment
  UC2070550  Lepidium nitidum Barbara Ertter with David Gowen and Michael Park 2017-5-2 22813 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road Comment
  UC2070573  Plagiobothrys stipitatus Barbara Ertter with David Gowen and Mike Park 2004-4-13 18348 Contra Costa Black Diamond Mines Regional Park south of Pittsburg, ca 1 km due east of Sidney Flat Headquarters. Comment
  UC2070625  Cirsium douglasii var. douglasii Barbara Ertter with D. Gowen, J. Ginochio, M. Park, S. Matson, A. Moore, S. D'Alcamo, J. Greenhouse, K. Kersh and J. Gawthrup 2005-5-8 18564 Contra Costa Long Ridge on west side of Mount Diablo, stringer below Moses Rock Spring on Burma Road. Comment
  UC2070652  Triodanis biflora Barbara Ertter with David Gowen and Mike Park 2004-4-13 18351 Contra Costa Black Diamond Mines Regional Park south of Pittsburg, trail system in chaparral/woodland S of Somersville townsite, Chaparral Loop Trail just across footbridge from Manhattan Trail cut-off. Comment
  UCR263530  Eriogonum gracile Barbara Ertter, Tony Morosco 1996-7-27 15040 Contra Costa north side of Mount Diablo south of Clayton, where Cardinet Oaks Road crosses Donner Creek 335 Comment
  UCR263535  Eleocharis macrostachya Barbara Ertter 1998-5-3 16062 Contra Costa Central Coast, area of Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo, below road southeast of ponds 305 Comment
  UCR263544  Plantago coronopus Barbara Ertter 1990-10-24 9684 Contra Costa San Francisco Bay Region, Martinez Regional Shoreline on Carquinez Strait 2 Comment
  UCR263546  Ranunculus canus Barbara Ertter, R. K. Brummitt 1998-5-6 16090 Contra Costa San Francisco Bay Region, lower Donner Canyon on north base of Mount Diablo, Hetherington Trail upstream from Donner Cabin 274 Comment
  UCR263547  Ranunculus aquatilis var. capillaceus Barbara Ertter, Tony Morosco 1998-7-11 16365 Contra Costa San Francisco Bay Region, North base of Mount Diablo, small pond on north side of Bruce Lee Road east of Mitchell Canyon staging area 183 Comment
  UCR263551  Trifolium tomentosum Barbara Ertter 2002-5-8 17832 Contra Costa San Francisco Bay Region, Richmond Field Station 6 Comment
  UCR263552  Salsola soda Barbara Ertter 1990-9-30 9659 Contra Costa San Francisco Bay Region, Point Pinole Regional Shoreline on San Pablo Bay, north Richmond; on N edge of park 2 Comment
  UCR263553  Acacia cyclops Barbara Ertter 1990-10-14 9660 Contra Costa San Francisco Bay Region, Point Isabel Regional Shoreline on San Francisco Bay in southwest El Cerrito, at end of Rydin Road 5 Comment
  UCR263554  Urospermum picroides Barbara Ertter 1990-6-18 9133 Contra Costa San Francisco Bay Region, Tilden Regional Park, along Nimitz hiking/bicycle trail near Inspiration Point 206 Comment
  UCR263556  Trifolium albopurpureum var. dichotomum Barbara Ertter, R. K. Brummitt 1998-5-13 16131 Contra Costa San Francisco Bay Region, Summit Road on Mount Diablo, above Juniper Camp 905 Comment
  UCR263783  Lythrum tribracteatum Barbara Ertter, Brad Olson 1991-9-28 10834 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  UCR265172  Genista monspessulana Barbara Ertter 1991-5-12 9816 Contra Costa Central Coast, Point Isabel Regional Shoreline in southwest corner of El Cerrito, on San Francisco Bay; along old railroad right-of-way between bay and Salicornia marsh. 4 Comment
  UCR265174  Salpichroa rhomboidea Barbara Ertter 1991-5-12 9818 Contra Costa Central Coast, Point Isabel Regional Shoreline in southwest corner of El Cerrito, on San Francisco Bay; along old railroad right-of-way between bay and Salicornia marsh. 4 Comment
  UCR265176  Plagiobothrys acanthocarpus Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8117 Contra Costa San Joaquin Valley, Clifton Court Forebay, c. 15 air miles southwest of Stockton 0 Comment
  UCR265177  Amsinckia intermedia Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8130 Contra Costa San Joaquin Valley, Clifton Court Forebay, c. 15 air miles southwest of Stockton 0 Comment
  UCR265179  Lavatera cretica Barbara Ertter 1991-5-12 9813 Contra Costa Central Coast, Point Isabel Regional Shoreline in southwest corner of El Cerrito, on San Francisco Bay; along old railroad right-of-way between bay and Salicornia marsh. 4 Comment
  UCR78377  Rumex obtusifolius Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8122 Contra Costa San Joaquin Valley, Clifton Court Forebay, c. 15 air miles southwest of Stockton 0 Comment
  CAS-BOT-BC33739  Eriogonum nudum var. psychicola Barbara Ertter 1997-8-18 15766 Contra Costa Antioch Dunes (USFWS National Wildlife Refuge) Comment
  CDA34979  Pistacia atlantica Barbara Ertter, Dan Norris 2001-4-8 17603 Contra Costa Lime Ridge Open Space, main pit of west quarry area north of the adjacent golf course. Comment
  CDA4905  Rhamnus alaternus Barbara Ertter, D. Gowen 2006-4-14 18667 Contra Costa Lime Ridge Open Space at northwest base of Mt. Diablo; north side of Ygnacio Valley Road near culvert for major draw at bend in road. 0 Comment
  CDA4971  Vitis rupestris Barbara Ertter 1995-4-27 14020 Contra Costa Walkway along ditch between Valley Vista and Arbolado Park, Walnut Creek, ca 300 feet. 0 Comment
  CDA5088  Passiflora tarminiana Barbara Ertter 1999-9-17 16846 Contra Costa South edge of El Cerrito at northeast base of Albany Hill, edge of paved lot at southwest corner of junction San Pablo Avenue and Carlson Avenue, near Cerrito Creek. 0 Comment
  CDA6637  Viburnum rigidum Barbara Ertter 2001-10-29 17810 Contra Costa Tilden Regional Park, Selby Trail and Wildcat Gorge upstream from Lake Anza. 0 Comment
  CHSC117387  Malacothamnus fasciculatus Barbara Ertter; Tony Morosco 1998-9-18 16417 Contra Costa West edge Lime Ridgde Open Space northwest of Mount Diablo, chaparral at base of hills. Comment
  CHSC117388  Plagiobothrys trachycarpus Barbara Ertter; Richard K. Brummitt 1998-5-13 16143 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, depression in road from Somersville Road to south leg of Loughler Loop Trail. Comment
  CHSC117389  Galium parisiense Barbara Ertter; Susan D'Alcamo 1998-6-12 16168 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit, steep rocky S-facing bowl. 1036 Comment
  CHSC118029  Deschampsia elongata Barbara Ertter 1999-6-12 16710 Contra Costa Black Hawk Ridge road on south side of Mount Diablo, road crossing at confluence of NE and E forks of Sycamore Creek. 396 Comment
  HSC98492  Geranium rotundifolium Barbara Ertter 1996-6-4 14684 Contra Costa Tilden Regional Park in hills E of Berkeley, restoration site NE of junction of Grizzly Peak Blvd. and Golf Course Dr. Comment
  JEPS107104  Pentachaeta alsinoides Barbara Ertter, Lisa Schultheis 1995-4-27 14006 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  JEPS111056  Potamogeton foliosus var. foliosus Barbara Ertter 2005-8-17 18617 Contra Costa N base of Mount Diablo S of Clayton, small permanent pond NE of Mitchell Canyon parking lot Comment
  NY409592  Callitriche marginata B. J. Ertter 1989-4-5 8144 Contra Costa Alkali sink W and adjacent to Clifton Court Forebay, ca. 15 air miles SW of Stockton, near sea level Comment
  NY482313  Spergularia macrotheca B. J. Ertter 1990-10-14 9661 Contra Costa Point Isabel Regional Shoreline on San Francisco Bay in sw El Cerrito Comment
  NY76535  Lepidium latifolium B. J. Ertter 1991-5-12 9810 Contra Costa Point Isabel Regional Shoreline in southwest corner of El Cerrito, on San Francisco Bay Comment
  OBI53981  Lepidium acutidens Barbara Ertter, Jim Jokerst and Dave Magney 1989-4-5 8127 Contra Costa SE county. Clifton Court Forebay, ca 15 air mi Sw of Stockton, T1S, R3E, sec 24 SESW Comment
  OBI72045  Geranium rotundifolium Barbara Ertter 1996-6-4 14684 Contra Costa Tilden Regional Park in hills E of Berkeley, restoration site NE of jctn of Grizzly Peak Blvd & Golf Course Dr Comment
  POM721360  Gnaphalium stramineum Barbara Ertter, Richard K. Rabeler 1994-6-6 12817 Contra Costa Point Isabel in S Richmond; on old railroad bed north of Costco. Comment
  RSA0008357  Blepharizonia plumosa Barbara Ertter, Brad Olson, Dianne Lake, Seth Adams, et al. 1994-9-11 13080 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton. Comment
  RSA0016024  Lythrum tribracteatum Barbara Ertter, Brad Olson 1991-9-28 10834 Contra Costa San Pablo Reservoir between Orinda and El Sobrante. 91 Comment
  RSA0026145  Schoenoplectus pungens var. pungens Barbara Ertter 1998-6-20 16239 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Alkali Pond at Wiget Lane entrance. 91 Comment
  RSA0026146  Paspalum dilatatum Barbara Ertter 1998-6-20 16241 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Bob Pond at Old Borges Ranch. Comment
  RSA0026147  Stuckenia pectinata Barbara Ertter 1998-6-20 16251 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Gypsy Flat Pond SW of Old Borges Ranch. Also in Joaquin Pond. Comment
  RSA0026148  Polypogon viridis Barbara Ertter 1998-6-20 16256 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, wet margin of Willow Spring Pond south of Ginder Gap. Comment
  RSA0026152  Calochortus argillosus Barbara Ertter, Dan Norris 1998-6-18 16209 Contra Costa South Gate Road on south flank of Mount Diablo, ca. 1 mile in from park boundary. 305 Comment
  RSA0026153  Ludwigia peploides subsp. montevidensis Barbara Ertter, Lincoln Constance 1995-6-16 14263 Contra Costa East edge Dow Marsh on west side Antioch Marina, south side San Joaquin River in Delta area. Comment
  RSA0026155  Lupinus formosus var. formosus Barbara Ertter, J. Travis Columbus 1990-6-10 9116 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill.; grassy hill SE of Alhambra Valley staging area. 152 Comment
  RSA0026158  Leymus triticoides Barbara Ertter 2000-7-29 17448 -a Contra Costa Lower Donner Canyon just above Donner Cabin site, on north side of Mount Diablo. 213 Comment
  RSA0026162  Plantago coronopus Barbara J. Ertter 1990-10-24 9684 Contra Costa Martinez Regional Shoreline on Carquinez Strait. Near arch bridge. Comment
  RSA0026181  Quercus X morehus Barbara Ertter, Tony Morosco 1996-7-27 15038 Contra Costa North side Mount Diablo, Wasserman Trail below Cardinet Oaks Road. Comment
  RSA0027401  Trifolium fragiferum Barbara Ertter 1999-7-17 16764 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Wildcat Creek Trail between Rifle Range Road and boundary with Tilden Regional Park. Comment
  RSA0027402  Juncus phaeocephalus var. paniculatus Barbara Ertter 1999-7-17 16765 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Wildcat Creek Trail between Rifle Range Road and boundary with Tilden Regional Park. On east side of road. Comment
  RSA0027403  Epipactis helleborine Barbara Ertter 1999-7-17 16769 Contra Costa Tilden Regional Park, trail to Jewel Lake paralleling Wildcat Creek, through thick woodland growth. Comment
  RSA0027404  Carex tumulicola Barbara Ertter 1999-7-17 16770 Contra Costa Tilden Regional Park, trail to Jewel Lake paralleling Wildcat Creek, through thick woodland growth. Comment
  RSA0027405  Datura stramonium Barbara Ertter 1999-8-21 16790 Contra Costa Former reservoir upstream from mouth of Mitchell Canyon. Comment
  RSA0027412  Stenotaphrum secundatum Barbara Ertter, Richard K. Rabeler, Tony Morosco 1997-6-10 15669 Contra Costa Martinez Regional Shoreline, south edge of Carquinez Strait. On path to bridge. Comment
  RSA0027414  Cerastium fontanum subsp. vulgare Barbara Ertter, Rich Rabeler, Tony Morosco 1997-6-10 15672 Contra Costa Martinez Regional Shoreline, south edge of Carquinez Strait. Comment
  RSA0027415  Eriogonum gracile Barbara J. Ertter 1997-8-24 15773 Contra Costa Mount Diablo, SE side of peak on Mary Bowerman/Fire Interpretive Trail. Comment
  RSA0027416  Eragrostis mexicana subsp. virescens Barbara Ertter 1997-8-24 15777 Contra Costa Mount Diablo, Summit Road just above Junction Station. 671 Comment
  RSA0027417  Juncus effusus var. pacificus Barbara Ertter, Joanne Kerbavaz, Mary Bowerman 2000-8-20 17514 Contra Costa South side of Mount Diablo, Green Ranch Road at Meridian Springs Creek crossing. 747 Comment
  RSA0027418  Malacothamnus fremontii Barbara Ertter, Joanne Kerbavaz, Mary Bowerman 2000-8-20 17516 Contra Costa South side of Mount Diablo, Pioneer Horse Camp. 884 Comment
  RSA0027635  Chamaesyce serpillifolia subsp. serpillifolia Barbara Ertter, Chris Thayer 1996-10-25 15359 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park. 91 Comment
  RSA0027639  Lupinus pachylobus Barbara Ertter, Tony Morosco 1998-4-12 16002 Contra Costa Base of Mount Olympia on north side of Mount Diablo, slope above quarry NE of Olympia Trail, with numerous outcrops. 518 Comment
  RSA0027640  Stellaria media subsp. pallida Barbara Ertter, Tony Morosco 1998-4-12 16015 Contra Costa Mount Olympia on north side of Mount Diablo. 884 Comment
  RSA0027641  Lithophragma bolanderi Barbara Ertter 1998-5-3 16038 Contra Costa SW fork of Pine Creek between Pine Ridge and Wall Point Ridge, southwest base of Mount Diablo. 244 Comment
  RSA0027643  Hedypnois cretica Barbara Ertter 1998-5-3 16045 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo. 198 Comment
  RSA0027644  Ranunculus aquatilis var. capillaceus Barbara J. Ertter 1998-5-3 16057 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. 274 Comment
  RSA0027645  Plagiobothrys bracteatus Barbara Ertter 1998-5-3 16058 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. 274 Comment
  RSA0027647  Eleocharis palustris Barbara Ertter 1998-5-3 16062 Contra Costa area of Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Below road SE of ponds. 274 Comment
  RSA0027649  Agrostis capillaris Barbara Ertter, Amy Rusev 1998-1-17 15903 Contra Costa Edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry (subsequently developed) on south side of Ygnacio Vally Road. Comment
  RSA0027699  Mentha aquatica Barbara Ertter 1996-9-19 15292 Contra Costa Antioch Marina. Edge of marsh near parking lot. Comment
  RSA0027700  Trifolium oliganthum Barbara Ertter, Dan Norris 2001-4-15 17609 Contra Costa West side Mount Diablo, head of W-facing drainage west of China Wall rock formation (off trail between Hanging Valley Trail and China Wall Road). 274 Comment
  RSA0027701  Lathyrus jepsonii subsp. californicus Barbara J. Ertter 2001-5-10 17635 Contra Costa North flank of Mount Diablo, SE of Mitchell Canyon trailhead, on traversing road to Mitchell Rock Trail. 213 Comment
  RSA0027702  Lupinus microcarpus var. microcarpus Barbara Ertter, John Ginochio, Mary Bowerman 2001-5-8 17628 Contra Costa Northwest flank of Mount Diablo, upper Galindo Creek southwest of Mount Zion. Comment
  RSA0027707  Cosmos bipinnatus Barbara Ertter 1996-9-19 15290 Contra Costa Cerrito Creek at base of Albany Hill, just west of San Pablo Avenue. Comment
  RSA0027708  Eclipta prostrata Barbara Ertter 1996-9-19 15298 Contra Costa Antioch Marina, edge of Dow Marsh lands. Comment
  RSA0027709  Juncus articulatus Barbara Ertter 1996-9-19 15300 Contra Costa Antioch Marina, edge of bay in Dow Marsh lands. Comment
  RSA0027710  Stuckenia pectinata Barbara Ertter, Chris Thayer 1996-10-25 15371 Contra Costa Northwest flank of Mount Diablo. Tick Pond at arc of Falcon Road between North Gate Road and Castle Rock. 183 Comment
  RSA0027712  Aira caryophyllea Barbara Ertter, Richard K. Brummitt 1998-5-6 16105 Contra Costa Point San Pablo west of Richmond, crest of road to yacht harbor. Comment
  RSA0027713  Deschampsia holciformis Barbara Ertter, Richard K. Brummitt 1998-5-6 16097 Contra Costa Antioch Marina. Comment
  RSA0027715  Eriogonum nudum var. auriculatum Barbara J. Ertter, Rich Rabeler, Tony Morosco 1997-6-10 15662 Contra Costa Point Richmond, crest of road. Comment
  RSA0027717  Raphanus raphanistrum Barbara Ertter, R. K. Brummitt 1998-5-13 16134 Contra Costa North Gate Road on west side of Mount Diablo, hairpin turn opposite Angel Kerley trailhead. 579 Comment
  RSA0027718  Lupinus nanus Barbara Ertter, R. K. Brummitt 1998-5-13 16132 Contra Costa Summit Road on Mount Diablo, base of rock outcrop/roadcut above Juniper Camp. Comment
  RSA0027886  Microseris douglasii subsp. douglasii Barbara Ertter, Stu Garrett 1997-3-29 15527 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  RSA0027887  Trifolium incarnatum Barbara Ertter 2010-5-12 19830 Contra Costa Miller Knox Regional Shoreline at south edge of Point Richmond. Along West Ridge Trail. Comment
  RSA0027920  Trifolium depauperatum var. truncatum Barbara Ertter 1998-4-4 15957 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, summit of northwestern-most ridge. Comment
  RSA0027922  Penstemon heterophyllus subsp. purdyi Barbara J. Ertter 1998-4-4 15972 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Quarry Hill. Comment
  RSA0027945  Chenopodium californicum Barbara Ertter 1998-4-4 15964 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, west side of rocky knoll between northwestern-most ridge and Indian Valley School. Comment
  RSA0027946  Sinapis arvensis Barbara Ertter 1998-4-4 15959 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, west base of northwestern-most ridge, around old orchard. Comment
  RSA0027947  Stephanomeria elata Barbara Ertter 1997-9-14 15819 Contra Costa Southwest side of Mount Diablo, Wall Point Road on ridge northwest of Wall Point. Comment
  RSA0027948  Arctostaphylos manzanita subsp. laevigata Barbara Ertter 1997-9-14 15818 Contra Costa Southwest side of Mount Diablo, Wall Point Road on ridge northwest of Wall Point. Comment
  RSA0027949  Pogogyne serpylloides Barbara Ertter 1997-9-14 15803 Contra Costa WSW base of Mount Diablo, along creek at fence line between Pine Ridge and lower Wall Point Road from Macedo Ranch. Comment
  RSA0028271  Galium murale Barbara Ertter, J. Travis Columbus 1990-6-10 9114 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; edge of stream near crossing on Spengler Trail NE of Briones Peak. 183 Comment
  RSA0028278  Aster exilis Barbara Ertter, CNPS 1990-9-16 9645 Contra Costa Bethel Island NE of Brentwood, E end of Gateway Road at W edge of Franks Tract State Recreation Area. Comment
  RSA0028851  Chamaesyce maculata Barbara Ertter, Rich Rabeler, Tony Morosco 1997-6-10 15666 Contra Costa Miller Knox Regional Shoreline south of Richmond, parking area for Richmond Ramblers. Comment
  RSA0028852  Crypsis vaginiflora Barbara Ertter, Richard K. Rabeler, Tony Morosco 1997-6-10 15659 Contra Costa North base of Mount Diablo, pond on Three Springs Road. Comment
  RSA0028902  Distichlis spicata Barbara Ertter, Dan Norris 1999-11-14 16851 Contra Costa Black Diamond Mines Regional Preserve, south of parking area for Somersville townsite. Comment
  RSA0028903  Spergularia rubra Barbara Ertter, Dan Norris 1999-11-14 16852 Contra Costa Black Diamond Mines Regional Preserve, south of parking area for Somersville townsite. Comment
  RSA0028906  Eucalyptus sideroxylon Barbara Ertter, Laura Fujii 1999-3-7 16483 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, near Alvarado Staging area at NW end of park, along hiking road. Comment
  RSA0029049  Carex subbracteata Barbara Ertter 1999-3-21 16491 Contra Costa NW corner of Miller Knox Regional Shoreline, Potrero Hills SW of Richmond. Abandoned trail on north side of crest. Comment
  RSA0029050  Deschampsia elongata Barbara Ertter 1999-6-12 16710 Contra Costa Black Hawk Ridge road on south side of Mount Diablo, road crossing at confluence of NE and E forks of Sycamore Creek. 396 Comment
  RSA0029051  Agrostis exarata Barbara Ertter 1999-6-12 16711 Contra Costa Black Hawk Ridge road on south side of Mount Diablo, road crossing at confluence of NE and E forks of Sycamore Creek. 396 Comment
  RSA0029053  Juncus bufonius var. bufonius Barbara Ertter 1999-6-12 16716 Contra Costa West Branch Alamo Creek on south flank of Mount Diablo, along unofficial path running from north spur of Black Hawk Ridge Road to south spur off of Knob Cones Point Road (near powerline). 457 Comment
  RSA0029054  Helianthus gracilentus Barbara Ertter 1999-6-12 16722 Contra Costa Knobcone Point Road on south side of Mount Diablo. At head of NE fork of Sycamore Creek. 488 Comment
  RSA0029055  Calochortus argillosus Barbara Ertter, Mary L. Bowerman, Lisa Schultheis 1998-8-21 16395 Contra Costa Southwest base of Mount Diablo, South Gate Road 0.7 mi from park boundary. Comment
  RSA0029285  Spergularia marina Barbara Ertter, John Ginochino, Mary Bowerman 2001-5-8 17630 Contra Costa Northwest flank of Mount Diablo, tributary of Galindo Creek on south side of knoll SW of Mount Zion. Comment
  RSA0029287  Ranunculus occidentalis Barbara J. Ertter, Dan Norris 2001-4-15 17607 Contra Costa Diablo Foothills Regional Park. At east end of Alamo Trail. 213 Comment
  RSA0029360  Echinochloa crus-galli Barbara Ertter 1996-11-24 15421 Contra Costa West side of Mount Diablo, upstream from Pine Pond along Stage Road in Pine Canyon, floodplain at junction with Dusty Road. Comment
  RSA0029361  Agrostis hallii Barbara Ertter 1996-11-24 15416 Contra Costa Southwest side of Mount Diablo, Wall Point Road across Pine Ridge ca. 0.5 air mi ENE of Macedo Ranch. Comment
  RSA0029362  Cuscuta subinclusa Barbara Ertter, Mary L. Bowerman 1996-11-1 15409 Contra Costa North base of Mount Diablo, south end of Hetherington Trail at Donner Creek crossing. Comment
  RSA0029364  Asclepias fascicularis Barbara Ertter, Mary L. Bowerman, Lisa Schultheis 1996-7-5 14916 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  RSA0029365  Amsinckia lunaris Barbara Ertter, Chris Thayer 1993-5-7 11707 Contra Costa Ca 0.5 mile N of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land E of Tilden Park. 457 Comment
  RSA0029366  Lomatium dasycarpum subsp. dasycarpum Barbara Ertter, Susan D Alcamo 1994-4-24 12461 Contra Costa Mount Diablo east Walnut Creek, Bald Ridge Trail above Murchio Gap. 762 Comment
  RSA0029367  Setaria viridis Barbara Ertter, Mary Bowerman, Lisa Schultheis 1996-7-5 14921 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  RSA0029464  Geranium purpureum Barbara Ertter 2001-5-23 17651 Contra Costa Campus of UC Berkeley, southwest corner of Haviland Hall. Comment
  RSA0029465  Geranium purpureum Barbara Ertter 2000-5-14 17012 Contra Costa Mount Diablo Regional Park, Falls Trail at Donner Creek crossing. 488 Comment
  RSA0029580  Geranium rotundifolium Barbara Ertter 1996-6-4 14684 Contra Costa Tilden Regional Park in hills east of Berkeley, restoration site northeast of junction of Grizzly Peak Boulevard and Golf Course drive. Comment
  RSA0029672  Calochortus venustus Barbara Ertter, Susan D'Alcamo 1998-6-12 16156 Contra Costa North Gate Road on west flank of Mount Diablo, ca 1/2 mile below upper Turtle Rock Ranch buildings. 518 Comment
  RSA0029674  Brachypodium distachyon Barbara Ertter, Dan Norris 1998-6-18 16222 Contra Costa Devil's Slide trail from Knobcone Point Road, south side of Mount Diablo. 457 Comment
  RSA0029675  Cryptantha corollata Barbara Ertter, Susan D Alcamo 1998-6-12 16165 Contra Costa North Peak Trail from Devil s Elbow on SE side of Mount Diablo summit, steep rocky S-facing bowl. 1037 Comment
  RSA0029676  Galium parisiense Barbara Ertter, Susan D'Alcamo 1998-6-12 16168 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit, steep rocky S-facing bowl. 1037 Comment
  RSA0029677  Delphinium hesperium subsp. hesperium Barbara J. Ertter, Richard K. Brummitt 1998-5-13 16137 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, head of SE branch of Loughler Loop Trail. 305 Comment
  RSA0029679  Agrostis pallens Barbara Ertter, Tony Morosco 1998-9-18 16433 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, above sand quarry [subsequently developed] on south side of Ygnacio Valley Road, SE slope below water tank. Comment
  RSA0029680  Phyla nodiflora var. nodiflora Barbara Ertter, Tony Morosco 1998-9-18 16429 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, unmined land near north quarry area [subsequently developed]. 122 Comment
  RSA0029681  Agrostis avenacea Barbara Ertter, Tony Morosco 1998-9-18 16425 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, north quarry area [subsequently developed]. 122 Comment
  RSA0029766  Piptatherum miliaceum Barbara Ertter, CNPS 1990-11-11 9709 Contra Costa Carquinez Straits Regional Park east of Crockett, near abandoned settlement near Port Costa. Comment
  RSA0029769  Urospermum picroides Barbara Ertter 1990-6-18 9133 Contra Costa Tilden Regional Park, along Nimitz hiking/bicycle trail near Inspiration Point. Comment
  RSA0029772  Acacia cyclops Barbara J. Ertter 1990-10-14 9660 Contra Costa Point Isabel Regional Shoreline on San Francisco Bay in SW El Cerrito, on abandoned railroad track at end of Rydin Road. Comment
  RSA0029773  Salsola soda Barbara Ertter 1990-9-30 9659 Contra Costa Point Pinole Regional Shoreline on San Pablo Bay, north Richmond, on N edge of park. Comment
  RSA0029779  Stephanomeria virgata subsp. pleurocarpa Barbara Ertter 2000-7-29 17439 Contra Costa Donner Basin on north side of Mount Diablo, opening on lower end of Middle Trail between Meridian Ridge Road and first stream crossing. 366 Comment
  RSA0029781  Ranunculus aquatilis var. subrigidus Barbara J. Ertter, Alan Prather 2003-6-7 18190 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, pond NE of main trailhead. Comment
  RSA0029782  Lilaea scilloides Barbara Ertter, Alan Prather 2003-6-7 18191 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, pond NE of main trailhead. Comment
  RSA0029783  Arctostaphylos tomentosa subsp. crustacea Barbara Ertter, L. Vorobik 2000-1-9 16889 Contra Costa Las Trampas Regional Wilderness in East Bay Hills west of Danville. Comment
  RSA0029784  Arctostaphylos tomentosa subsp. rosei Barbara Ertter, L. Vorobik 2000-1-9 16888 Contra Costa Las Trampas Regional Wilderness in East Bay Hills west of Danville. Comment
  RSA0029785  Cardamine oligosperma Barbara Ertter 2000-3-19 16897 Contra Costa Southwest side of Mount Diablo, Stage Road along Pine Creek, ca. 0.5 mile above Pine Pond. 198 Comment
  RSA0090977  Amsinckia intermedia Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8130 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  RSA0097921  Spergularia bocconi Barbara Ertter, Mary L. Bowerman 1995-5-7 14027 Contra Costa NE side of Mount Diablo SE of Clayton, along road south of Marsh Creek road summit. 305 Comment
  RSA0098555  Spergularia marina var. tenuis Barbara Ertter, J. D. Jokerst, D. Magney 1989-4-5 8135 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  RSA0098749  Spergularia macrotheca var. macrotheca Barbara Ertter 1990-10-14 9661 Contra Costa Point Isabel Regional Shoreline on San Francisco Bay in SW El Cerrito. Comment
  RSA518738  Spergularia macrotheca var. longistyla Barbara Ertter 1989-4-5 8113 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  RSA523885  Lasthenia californica Barbara Ertter, Jim Jokerst, D. Magney 1989-4-5 8119 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  RSA523888  Lepidium nitidum Barbara Ertter, Jim Jokerst, D. Magney 1989-4-5 8123 Contra Costa W and adjacent to Clifton Court Forebay, ca 15 airmiles SW of Stockton. 0 Comment
  RSA537493  Lepidium dictyotum Barbara Ertter, Jim Jokerst 1989-4-5 8142 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton; near sea level 0 Comment
  RSA537530  Amaranthus deflexus Barbara Ertter, Elizabeth Neese 1988-10-15 7973 Contra Costa West of I-580 in El Cerrito, junction of Central Ave. and Rydin Road Comment
  RSA537536  Trifolium depauperatum var. amplectens Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8134 Contra Costa Alkali sink W and adjacent to Clifton Court Forebay, ca 15 air miles SW of Stockton. Comment
  RSA537696  Microseris acuminata Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8118 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  RSA666318  Phyla nodiflora Barbara Ertter, Brad Olson 1991-9-28 10828 Contra Costa San Pablo Reservoir between Orinda and El Sobrante. 91 Comment
  RSA666352  Ambrosia chamissonis var. chamissonis Barbara Ertter, Brad Olson 1993-10-30 12288 Contra Costa Northeast of Rodeo, across railroad tracks from San Pablo Avenue Comment
  RSA666355  Aster radulinus Barbara Ertter, Dianna Lake 1991-8-18 10675 Contra Costa Carquinez Strait Regional Shoreline east of Crockett, northeast of Bull Valley staging area Comment
  RSA666357  Ceratophyllum demersum Barbara Ertter, Lynne Hosley 1991-9-22 10823 Contra Costa Lafayette Reservoir in hills SW of Lafayette 137 Comment
  RSA666361  Plagiobothrys stipitatus var. micranthus Barbara Ertter, J. D. Jokerst, D. Magney 1989-4-5 8126 Contra Costa SE Contra Costa: alkali sink W and adjacent to Clifton Court Forebay, ca 15 air miles SW of Stockton 0 Comment
  RSA666367  Plagiobothrys acanthocarpus Barbara Ertter 1989-4-5 8117 Contra Costa Alkali sink W and adjacent to Clifton Court Forebay, ca 15 air miles SW of Stockton 0 Comment
  RSA666369  Plagiobothrys stipitatus Barbara Ertter, J. D. Jokerst, D. Magney 1989-4-5 8120 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  RSA666381  Cordylanthus pilosus subsp. pilosus Barbara J. Ertter, Brad Olson 1993-8-8 12200 Contra Costa Bishop Ranch Regional Open Space southwest of San Ramon. Comment
  RSA666388  Montia fontana Barbara Ertter 1993-4-17 11511 Contra Costa Morgan Territory 10 air miles N of Livermore, in lee of Mt. Diablo. Shallow side at edge of sandstone outcrop S of Hummingbird trail. 610 Comment
  RSA666403  Lavatera cretica Barbara Ertter 1991-5-12 9813 Contra Costa Point Isabel Regional Shoreline in SW corner of El Cerrito, on San Francisco Bay. Comment
  RSA666412  Galium murale Barbara Ertter, Chris Thayer 1993-5-7 11715 Contra Costa Ca 1/2 mile N of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land E of Tilden Park. Grazing land on lower slopes S of Wildcat Canyon Road. Comment
  RSA666468  Salpichroa origanifolia Barbara Ertter 1991-5-12 9818 Contra Costa Point Isabel Regional Shoreline in SW corner of El Cerrito, on San Francisco Bay. Comment
  RSA666474  Lasthenia glabrata subsp. glabrata Barbara Ertter, Chris Thayer 1993-5-7 11705 Contra Costa Ca 0.5 mile N of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land E of Tilden Park. 457 Comment
  RSA666484  Atriplex prostrata Barbara Ertter, E. Neese 1988-10-15 7979 Contra Costa Salicornia marsh west of I-580 in El Cerrito, west side along Rydin Road north of Central Avenue. Comment
  RSA666773  Gnaphalium palustre Barbara Ertter, Brad Olson 1991-9-28 10835 Contra Costa San Pablo Reservoir between Orinda and El Sobrante. 91 Comment
  RSA691922  Gaura parviflora Barbara Ertter 1991-9-22 10827 Contra Costa Point Isabel Regional Shoreline in southwest El Cerrito, along abandoned railroad right-of-way, near asphalt heap Comment
  RSA691925  Trifolium bifidum var. decipiens Barbara Ertter, Chris Thayer 1993-5-7 11714 Contra Costa Ca 1/2 mile N of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land E of Tilden Park. Grazing land on lower slopes S of Wildcat Canyon Road. Comment
  RSA691938  Hypericum calycinum Barbara Ertter 1993-6-25 11907 Contra Costa Oakland-Berkeley Hills, Grizzly Peak Boulevard ca 1/4 miles south of Tilden miniature steam trains (1/4 miles south of junction of Lomas Cantadas), mixed scrub forest. 488 Comment
  RSA692602  Holocarpha heermannii Barbara Ertter 1990-9-10 9641 Contra Costa Briones Regional Park, Briones Hills S of Martinez, abundant on open grassy slopes throughout park, forming large yellow patches. Comment
  RSA695881  Trifolium gracilentum Barbara Ertter, Chris Thayer 1993-5-7 11712 Contra Costa Ca 1/2 mile N of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land E of Tilden Park. Grazing land on lower slopes S of Wildcat Canyon Road. Comment
  RSA720794  Lotus corniculatus Barbara J. Ertter, Kristin Ertter 1995-7-11 14473 Contra Costa Sulfur Srping on Pine Cr., Diablo Foothills Regional Park SWof Walnut Creek. 122 Comment
  RSA720804  Sherardia arvensis Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13941 Contra Costa Mount Diablo State Park. Lower end of Mitchell Canyon S of Clayton. 183 Comment
  RSA720805  Galium murale Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13942 Contra Costa Mount Diablo State Park. Lower end of Mitchell Canyon S of Clayton. 183 Comment
  RSA720806  Torilis nodosa Barbara Ertter, Mary L. Bowerman 1995-6-11 14254 Contra Costa Shell Ridge recreation area southeast of Walnut Creek, bank of Indian Creek above Indian Valley pond 76 Comment
  RSA720807  Micropus californicus var. californicus Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14223 Contra Costa Mt. Diablo southeast of Walnut Creek, north-facing slope north of Curry Point 518 Comment
  RSA720810  Lavatera assurgentiflora Barbara Ertter 1994-6-6 12822 Contra Costa Point Isabel in south Richmond Comment
  RSA720812  Lathyrus jepsonii subsp. californicus Barbara J. Ertter, Dale Sanders, Dan Norris 1994-3-26 12331 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road, southeast side of hill. 30 Comment
  RSA720813  Sanicula bipinnatifida Barbara Ertter, Dale Sanders, Dan Norris 1994-3-26 12335 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road, southeast side of hill. 30 Comment
  RSA720815  Microseris douglasii subsp. douglasii Barbara Ertter, Dale Sanders, Dan Norris 1994-3-26 12336 -a Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road Comment
  RSA720838  Herniaria hirsuta subsp. cinerea Barbara Ertter, Lisa Schultheis 1995-4-27 14013 Contra Costa Lime ridge open space NW of Mt. Diablo in Walnut Creek; extension of Valley View road. 152 Comment
  RSA720841  Cardaria draba Barbara Ertter, Richard K. Rabeler 1994-6-6 12819 Contra Costa Point Isabel in south Richmond; S of Central Avenue. Comment
  RSA721201  Malva parviflora Barbara Ertter, Mary L. Bowerman 1995-6-11 14248 Contra Costa Shell Ridge Recreation Area southwest of Walnut Creek, at west base Mt.Diablo; near Indian Valley School entrance. 91 Comment
  RSA721203  Hedypnois cretica Barbara Ertter, Mary L. Bowerman 1995-6-11 14249 Contra Costa Shell Ridge Recreation Area southwest of Walnut Creek, at west base Mt.Diablo; near Indian Valley School entrance. 91 Comment
  RSA721205  Callitriche heterophylla var. bolanderi Barbara Ertter, Mary L. Bowerman 1995-5-7 14034 Contra Costa Three-Springs Trail on NE side of Mt. diablo SE of Clayton; pond W side of road in grassy flat. Comment
  RSA721273  Stuckenia filiformis Barbara Ertter 1996-5-11 14644 Contra Costa North Gate Road at northwest base of Mount Diablo, Ticle Pond west of road toward Castle Rock. Comment
  RSA721276  Sidalcea malviflora subsp. malviflora Barbara Ertter, Gary Schoolcraft 1996-4-7 14568 Contra Costa Point San Pablo inwest Richard. crest ot road to yacht harbor Comment
  RSA721284  Downingia pulchella Barbara Ertter, Tom Delendick 1996-5-2 14607 Contra Costa Spring town wetlands, N of Livermore, along closed section of Hartford Rd. Comment
  RSA721285  Sagina apetala Barbara Ertter, Chris Thayer 1995-4-25 113991 Contra Costa Southeast side of Mt. Diablo NE of Danville; Devil s Slide area of Sycamore Canyon. 305 Comment
  RSA721362  Cryptantha torreyana var. pumila Barbara Ertter, Mary L. Bowerman 1994-6-19 12846 a Contra Costa Mt. Diablo State Park east of Walnut Creek; lower Summit Parking lot, opening on north side. 1128 Comment
  RSA721363  Madia sativa Barbara Ertter, Rich Rabeler 1994-6-18 12838 Contra Costa Pt. Pinole Regional Shoreline at north end of Richmond; northeast corner of park, near jct Marsh Trail and Cook's Point Trail. Comment
  RSA721368  Ranunculus sceleratus Barbara J. Ertter 1995-7-11 14485 Contra Costa W side of Mt. Diablo SW of Walnut Creek, dense growth at lower end of Pine Pond. 183 Comment
  RSA721369  Dichondra donelliana Barbara Ertter, Gary Schoolcraft 1996-4-7 14574 Contra Costa Pont San Pablo in west Richmond. Comment
  RSA721536  Kickxia elatine Barbara Ertter 1995-9-30 14525 Contra Costa North bank of Cerrito Creek at end of Yosemite Avenue in El Cerrito, foot of Albany Hill. Comment
  RSA721733  Garrya flavescens subsp. flavescens Barbara Ertter, Holly C. Forbes 1996-2-11 14549 Contra Costa North side Mount Diablo; Murchio Gap on Median Ridge Road. 732 Comment
  RSA721736  Arceuthobium occidentale Barbara Ertter, Mary L. Bowerman, Lisa Schultheis, Kevin Hintsa 1995-10-22 14533 Contra Costa Three Springs Trail on northeast side of Mt Diablo, wood above ranch. 366 Comment
  RSA721737  Polygonum amphibium var. emersum Barbara J. Ertter, K. Ertter 1995-7-11 14482 Contra Costa W side of Mt. Diablo SW of Walnut Creek, dense growth at lower end of Pine Pond. 183 Comment
  RSA721738  Gnaphalium canescens subsp. beneolens Barbara Ertter, Kristin Ertter 1995-7-11 14469 Contra Costa Pine Creek on west side of Mt. Diablo southwest of Walnut Creek; Diablo Foothills Regional Park Comment
  RSA721743  Aquilegia formosa Barbara J. Ertter, Mary L. Bowerman 1994-6-19 12840 Contra Costa Mt. Diablo State Park E of Walnut Creek, Muir Picnic Area on Summit Road. 1006 Comment
  RSA721744  Delphinium hesperium Barbara J. Ertter 1995-5-29 14242 Contra Costa S side Mt Diablo, edge of open meadow in flats near head of Curry Creek along road to Sheepherderss Springs from Sloam Road. 427 Comment
  RSA721745  Lasthenia californica Barbara Ertter, Mary L. Bowerman 1995-5-7 14060 Contra Costa Three-Springs Trail on NE side of Mt. Diablo SE of Clayton. Comment
  RSA721746  Minuartia douglasii Barbara Ertter, Mary L. Bowerman 1995-5-7 14059 Contra Costa Three-Springs Trail on NE side of Mt. Diablo SE of Clayton. Comment
  RSA721747  Trifolium dubium Barbara Ertter, Mary Bowerman 1995-5-7 14023 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road through annual grassland with scattered blue oak south of Marsh Creek. Road. summit. 305 Comment
  RSA721865  Cardamine hirsuta Barbara Ertter, Gary Schoolcraft 1996-4-7 14576 Contra Costa Molate Beach Park on San Francisco Bay N of San Rafael Bridge; S end of parking area. Comment
  RSA721866  Stachys rigida subsp. quercetorum Barbara Ertter, Brad Olson 1994-5-7 12756 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Comment
  RSA721867  Holocarpha heermannii Barbara Ertter, Brad Olson, Dianne Lake, Seth Adams 1994-9-11 13096 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton. Comment
  RSA721868C  Limonium sinuatum Barbara J. Ertter, Brad Olson 1994-5-7 12767 Contra Costa Western Drive to Point Molate, NW of Richmond -San Rafael bridge to toll plaza. Roadside near entrance to Point Molate Naval site. Comment
  RSA721868D  Hedypnois cretica Barbara Ertter 1994-5-23 12809 Contra Costa Point Isabel at S end Richmond, Regional Shoreline and marsh at end of Rydin Road. Comment
  RSA722061  Gilia achilleifolia subsp. multicaulis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14226 Contra Costa Mt. Diablo southeast of Walnut Creek, serpentine knoll ca 1/2 airmile north of Curry Point 488 Comment
  RSA722064  Pentachaeta alsinoides Barbara Ertter, Lisa Schultheis 1995-4-27 14006 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Drive. 122 Comment
  RSA722226  Vicia benghalensis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14220 Contra Costa Mt. Diablo southeast of Walnut Creek, roadside at Curry Point. 541 Comment
  RSA722228  Hemizonia kelloggii Barbara Ertter, Chris Thayer 1994-5-19 12783 Contra Costa Opposite E end of Antioch Dunes, S side of Wilber Avenue N of railroad tracks E of Antioch. Comment
  RSA755523  Plagiobothrys acanthocarpus Barbara Ertter 1992-3-8 10912 Contra Costa Contra Loma Regional Park; vernally wet flat northeast of bend in Frederickson Lane. Comment
  RSA755535  Potamogeton diversifolius Barbara Ertter, Brad Olson 1991-9-28 10839 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  RSA755536  Stuckenia pectinata Barbara Ertter, Lynne Hosley 1991-9-22 10824 Contra Costa Lafayette Reservoir in hills SW of Lafayette 137 Comment
  RSA755539  Najas guadalupensis Barbara Ertter, Brad Olson 1991-9-28 10838 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  RSA755542  Stuckenia pectinata Barbara Ertter, Brad Olson 1993-8-8 12202 Contra Costa Bishop Ranch Regional Open Space southwest of San Ramon Comment
  RSA755543  Plantago erecta Barbara J. Ertter, Jim Jokerst, Dave Magney 1989-4-5 8141 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  RSA756015  Eichhornia crassipes Barbara Ertter 1990-9-16 9642 Contra Costa Junction of Cypress Road and Jersey Island Road east of Oakley. Comment
  RSA756246  Jaumea carnosa Barbara Ertter, Elizabeth Neese 1988-10-15 7975 Contra Costa Salicornia marsh west of I-580 in El Cerrito, west side along Rydin Road north of Central Avenue. Comment
  RSA756364  Mentzelia affinis Barbara Ertter 1991-5-5 9773 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, south side of Rose Hill above Nortonville Pass. 366 Comment
  RSA756964  Elodea canadensis Barbara Ertter, Brad Olson 1991-9-28 10841 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  RSA756970  Anagallis arvensis Barbara J. Ertter 1993-5-7 11717 Contra Costa Berkeley-Oakland Hills, horse trail southeast of Vollmer Peak east of Tilden Park steam trains 518 Comment
  RSA759893  Lepidium latifolium Barbara Ertter, CNPS 1990-9-16 9649 Contra Costa Southeast side of Holland Track northeast of Brentwood, edge of parking area for marina near field. Comment
  RSA771186  Salicornia virginica Barbara Ertter, Elizabeth Neese 1988-10-15 7974 Contra Costa Salicornia marsh west of I-580 in El Cerrito, west side along Rydin Road north of Central Avenue. Comment
  RSA771187  Scandix pecten-veneris Barbara Ertter 1991-6-1 10072 Contra Costa Las Trampas Regional Wilderness in hills of Danville, paved portion of Rocky Ridge Trail ca 1 mile from parking lot 488 Comment
  SBBG122787  Plantago erecta B. Ertter, J. Jokerst, D. Magney 1989-4-5 8141 Contra Costa sink W and adjacent to Clifton Court Forebay, ca. 15 air mi SW of Stockton Comment
  SBBG122848  Pentachaeta alsinoides B. Ertter, L. Schulteis 1995-4-27 14006 Contra Costa end of Arbolado Drive, Lime Ridge open space NW of Mt Diablo 121 Comment
  SBBG122964  Phyla nodiflora B. Ertter 1990-9-10 9634 Contra Costa Briones Hills S of Martinez, Maricich Lagoon at jct of Alhambra Crk Trail and Old Briones Rd; Briones Regional Park 335 Comment
  SD131825  Spergularia macrotheca var. longistyla Barbara Ertter, Jim Jokerst and Dave Magney 1989-4-5 8113 Contra Costa Alkali sink west and adjacent to Clifton Court Forebay. Comment
  SD211501  Najas guadalupensis Barbara Ertter, Brad Olson 1991-9-28 10838 Contra Costa San Pable Reservoir between Orinda and El Sobrante, in shallow water at Sout end of reservoir 91 Comment
  SD211523  Potamogeton diversifolius Barbara Ertter, Brad Olson 1991-9-28 10839 Contra Costa San Pablo Reservoir between Orinda and El Sobrante, in shallow water at South end of reservoir 91 Comment
  SD211539  Blennosperma nanum var. nanum Barbara Ertter 1992-3-8 10908 Contra Costa Byron Springs Road 4-5 miles South of junction with J4, near Armstring Road Comment
  SD211561  Amsinckia intermedia Barbara Ertter, Jim Jokerst et al 1989-4-5 8130 Contra Costa Alkalai sink West and adjacent to Clifton Court Forebay, circa 15 airmiles Southwest of Stockton. Comment
  SD211583  Atriplex triangularis Barbara Ertter, Elizabeth Neese 1988-10-15 7979 Contra Costa Salicornia marsh West of I-580 in El Cerrito, West side along Rydin Road North of Central Avenue; edge of roadbank and marsh Comment
  SD211624  Limnanthes douglasii var. rosea Barbara Ertter, Jim Jokerst et al 1989-4-5 8115 Contra Costa Alkalai sink West and adjacent to Clifton Court Forebay, circa 15 airmiles Southwest of Stockton Comment
  SD241719  Hydrocotyle verticillata Barbara Ertter, Lincoln Constance 1995-6-16 14260 Contra Costa East edge Dow Marsh on west side Antioch Marina, south side San Joaquin River in Delta area. Comment
  SD241743  Cotula australis Barbara Ertter, Mary Bowerman et al. 1995-5-7 14055 Contra Costa Three-Sorings Trail on northeast side of Mt. Diablo southeast of Clayton, road behind houses traversing north facing slope. Comment
  SD241751  Hedypnois cretica Barbara Ertter 1994-5-23 12809 Contra Costa Point Isabel at S end Richmond, Regional Shoreline and marsh at end of Rydin Road. Weedy area of parking lot. Comment
  SD241767  Pentachaeta alsinoides Barbara Ertter, Lisa Schultheis 1995-4-27 14006 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  SD241801  Crassula tillaea Barbara Ertter, Gary Schoolcraft 1996-4-7 14578 Contra Costa Molate Beach Park on San Francisco Bay north of San Rafael Bridge; bare edge of lawn-covered bluff. Comment
  SD241813  Lotus corniculatus Barbara Ertter, Kristin Ertter 1995-7-11 14473 Contra Costa Sulfur Spring on Pine Cr, Diablo Foothills Regional Park SW of Walnut Creek 121 Comment
  SD241825  Fumaria capreolata Barbara Ertter 1999-3-21 16486 Contra Costa Miller Knox Regional Park near Point Richmond, edge of old excavation into rock (southeast of Richmond Ramblers building) Comment
  SD241830  Geranium rotundifolium Barbara Ertter 1996-6-4 14684 Contra Costa Tilden Regional Park in hills east of Berkeley, restoration site northeast of junction of Grizzly Peak Boulevard & Golf Course Drive. Comment
  SEINET10579391  Hedera helix Barbara J. Ertter 1994-10-23 Ertter 13915 Contra Costa Southwest El Cerrito, north edge of Breuner's parking lot, northwest Albany Hill. Comment
  SEINET10590760  Agrostis avenacea Barbara J. Ertter, B. Olson 1994-5-7 Ertter 12748 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Local in puddle on graded flat. Comment
  SEINET10590890  Festuca rubra Barbara J. Ertter, B. Olson 1994-5-7 Ertter 12752 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Intact coastal prairies above bluff just south of park, between road and bay, with dense Festuca. Coastal form, tufted (a=on bluffs). Comment
  SEINET10595215  Crypsis schoenoides Barbara J. Ertter 1995-10-22 Ertter 14532 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. dried roadside pond, clay. Comment
  SEINET10733565 Image available Eriogonum nudum var. psychicola Barbara J. Ertter 1997-8-18 Ertter 15766 Contra Costa Antioch Dunes (USFWS National Wildlife Refuge) on San Joaquin River east of Antioch, southwest corner of refuge north of railroad tracks in former vineyard, fine pale brown sand. Comment
  SEINET10741688  Asclepias fascicularis Barbara J. Ertter, M. Bowerman; Lisa Schultheis 1996-7-5 Ertter 14916 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek, streamside vegetation. Comment
  SEINET10747423  Eleocharis macrostachya Barbara J. Ertter 1991-9-28 Ertter 10836 Contra Costa San Pablo Reservoir between Orinda and El Sobrante, dried mud flats at S en of reservoir, 91 Comment
  SEINET10761151  Eriophyllum jepsonii Barbara J. Ertter, Holly Forbes 1997-4-20 Ertter 15562 Contra Costa North base of Mount Diablo, Eagle Peak Trail on NE side of Eagle Ridge below Twin Peaks, mixed chaparral-brush with Ptelea et al. Comment
  SEINET10777205  Clarkia rubicunda Barbara J. Ertter, J. Travis Columbus 1990-6-10 Ertter 9103 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; jct of Briones Crest and Table Top trails on grassy knoll E of Briones Peak. 427 Comment
  SEINET10785346  Potamogeton filiformis Barbara J. Ertter, Dianne Lake; B. Olson; Lynne Hosley; Amy Hiss 1991-8-18 Ertter 10715 Contra Costa Browns Island N of Pittsburg near confluence of Sacramento & San Joaquin rivers opposite Pittsburg Marina; tangled masses in water at W end of island. Comment
  SEINET10959961  Panicum capillare Barbara J. Ertter, Lincoln Constance 1995-6-16 Ertter 14262 Contra Costa East edge Dow Marsh on west side Antioch Marina, south side San Joaquin River in Delta area, mud on riprap. Comment
  SEINET11263166  Horkelia californica subsp. dissita Barbara Ertter, Chris Thayer 1996-10-25 15385 Contra Costa West side of Mount Diablo, North Gate Road 1.0 roadmiles NW of Junction, spring near road.; 0 579 Comment
  SEINET11263173  Amsinckia lunaris Barbara Ertter, Chris Thayer 1993-5-7 11707 Contra Costa Ca. 1/2 mile N of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land east of Tilden Park.; 0 457 Comment
  SEINET11263174  Lepidium oxycarpum Barbara Ertter, Dale Sanders; Dan Norris 1994-3-26 12337 Contra Costa Peyton Hill E of I-680, E of Martinez. South of Waterfront Road, west foot of hill near edge of marsh.; 0 Comment
  SEINET11263180  Carex globosa Barbara Ertter, A. T. Whittemore; Joanne Kerbavaz 2001-5-22 17650 Contra Costa South side of Mount Diablo, headwaters of West Branch Alamo Creek ESE of Knobcone Point, below powerline at end of Knobcone Point road.; 0 457 Comment
  SEINET11263976  Carex praegracilis Barbara Ertter, Dan Norris 2000-12-3 17553 Contra Costa South side of Mount Diablo, Devils Slide Trail above Sulfur Springs on nw fork of Sycamore Creek.; 0 427 Comment
  SEINET11268152  Eragrostis mexicana subsp. virescens Barbara Ertter 1997-8-24 15777 Contra Costa Mount Diablo, Summit Road just above Junction Station.; 0 671 Comment
  SEINET11268158  Carex globosa Barbara Ertter, Dan Norris 1998-6-18 16230 Contra Costa Black Hawk Ridge Road below Knobcone Point Road, south side of Mount Diablo.; 0 Comment
  SEINET11268160  Triteleia laxa Barbara Ertter 1998-4-4 15970 Contra Costa Northwest of Mount Diablo, Fossil Hill, Middle of NE-facing slope.; 0 122 Comment
  SEINET11268161  Bromus carinatus var. carinatus Barbara Ertter 1998-4-4 15969 Contra Costa Northwest of Mount Diablo, Fossil Hill, Middle of NE-facing slope.; 0 122 Comment
  SEINET11268164  Crypsis schoenoides Barbara Ertter, Chris Thayer 1996-10-25 15360 Contra Costa NW flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park, intermittent surface water left in shaded stream in valley oak woodland and grassland.; 0 91 Comment
  SEINET11268190  Atriplex semibaccata Barbara Ertter 1990-9-30 9655 Contra Costa NW side of county, SE of Hilltop Mall in N Richmond. Near Day's Inn; 0 Comment
  SEINET11268191  Salicornia europaea Barbara Ertter 1990-9-30 9656 Contra Costa Point Pinole Regional Shoreline, edge of sparina marsh at edge of salicornia marsh on SW corner of park; edge of San Pablo Bay.; 0 Comment
  SEINET11268197  Navarretia mellita Barbara Ertter 1998-12-6 16472 Contra Costa Southwest side of Mount Diablo, Wall Point Road just north of Rock City.; 0 Comment
  SEINET11268198  Navarretia mellita Barbara Ertter 1999-6-12 16720 Contra Costa Knobcone Point Road on south side of Mount Diablo, head of NE fork of Sycamore Creek.; 0 488 Comment
  SEINET11268200  Delphinium hesperium subsp. hesperium Barbara Ertter 1998-5-13 16137 Contra Costa In hills south of Pittsburg, head of SE branch of Loughler Loop Trail.; 0 305 Comment
  SEINET11268201  Raphanus sativus Barbara Ertter 1998-6-12 16160 Contra Costa North Gate Road on west flank of Mount Diablo, dogleg in road above raches opposite Angel Kerley trail head.; 0 579 Comment
  SEINET11268203  Nassella pulchra Barbara Ertter, Dan Norris 1998-6-18 16211 Contra Costa South Gate Road on south flank of Mount Diablo, ca 1 mile in from park boundary.; 0 Comment
  SEINET11268247  Allophyllum gilioides Barbara Ertter, Tony Morosco 1998-4-12 16021 Contra Costa Mount Olympia on north side of Mount Diablo, Olympia Road down ridge west of summit.; 0 853 Comment
  SEINET11268248  Lupinus bicolor Barbara Ertter 1998-4-4 15944 Contra Costa Northwest of Mount Diablo, SE of Indian Valley School.; 0 Comment
  SEINET11268258  Spergularia marina Barbara Ertter 2001-5-8 17630 Contra Costa Northwest flank of Mount Diablo, tributary of Galindo Creek on south side of knoll SW of Mount Zion.; 0 Comment
  SEINET11268259  Ranunculus occidentalis Barbara Ertter, Dan Norris 2001-4-15 17607 Contra Costa Alamo Trail.; 0 213 Comment
  SEINET12764843  Sinapis arvensis Barbara Ertter 1998-4-4 15959 Contra Costa Northwest of Mount Diablo, west base of northwestern-most ridge, around old orchard.; 0 Comment
  SEINET12765135  Coronopus didymus Barbara Ertter 1990-5-15 8991 Contra Costa Soth El Cerrito, north foot of Albany Hill at end of Yosemite Avenue cul-de-sac.; 0 Comment
  SEINET12765203  Cordylanthus pilosus subsp. pilosus Barbara Ertter, Lynne Hosley 1992-8-29 11266 Contra Costa East of Moutn Diablo in canyon along Coyote Trail.; 0 Comment
  SEINET12765205  Myriophyllum verticillatum Barbara Ertter, Lynne Hosley 1991-9-22 10822 Contra Costa Lafayette Reservoir in hills SW of Lafayette, in water at E end of dam.; 0 137 Comment
  SEINET12765208  Atriplex triangularis Barbara Ertter, B. Olson; L. L. Lake; Lynne Hosley 1991-10-20 10871 Contra Costa Just W of Antioch marina; along levee at water's edge, accessed from marina.; 0 Comment
  SEINET1909893  Atriplex triangularis Barbara Ertter, Elizabeth Neese 1988-1 7979 Contra Costa Salicornia marsh W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue Comment
  SEINET1909920  Lythrum tribracteatum Barbara Ertter, Brad Olson 1991-1 10834 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  SEINET1909954  Limnanthes douglasii var. rosea Barbara Ertter, Jim Kokerst, Dave Magney 1989-1 8115 Contra Costa San Diendo Co.: Black Mt. N Romona along clevland NF Rd 11S04 2.3 mi from Pamo Valley Rd, roadcut. 457 Comment
  SEINET1910270  Salicornia virginica Barbara Ertter, Elizabeth Neese 1988-1 7974 Contra Costa Salicornia marsh W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue. Comment
  SEINET1910273  Jaumea carnosa Barbara Ertter, Elizabeth Neese 1988-1 7975 Contra Costa Salicornia marsh @ of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue. Comment
  SEINET1910372  Lotus corniculatus Barbara Ertter, Kristin Ertter 1995-1 14473 Contra Costa Sulfur Spring on Pine Cr, Diablo Foothills Regional Park SW of Walnut Creek, 122 Comment
  SEINET242043  Elymus trachycaulus Barbara Ertter 2000-6-16 17953 Contra Costa Richmond Field Station at south end of 42nd St., Richmond, west end of grassland facing boundry fence with state park, edge of thick growth. Comment
  SEINET3892203  Eichhornia crassipes Barbara Ertter 1990-9-16 9642 Contra Costa Junction of Cypress Road & Jersey Island Road E of Oakley, covering ditch between road & field.; 0 Comment
  SEINET4136060  Atriplex prostrata Barbara Ertter, Elizabeth Neese 1988-10-15 7979 Contra Costa Salicornia marsh W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue.; 0 Comment
  SEINET4343725 Image available Bromus sterilis Barbara Ertter, Mary Bowerman 1995-5-7 14053 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton Comment
  SEINET4344622 Image available Crypsis schoenoides Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa. 1995-10-22 14532 Contra Costa Three Springs Trail on NE side of Mt. Diablo, south of crest of Marsh Creek Rd. dried roadside pond, clay. Comment
  SEINET7030710  Dirca occidentalis Barbara Ertter 1999-4-4 s.n. Contra Costa Redwood Regional Park in Oakland Hills, open slopes near Moon Trail head. Voucher for molecular sample. Comment
  SEINET7325849 Image available Trifolium depauperatum var. truncatum Barbara Ertter, Daniel Norris 2001-4-15 17611 Contra Costa Mount Diablo State Park; N-facing grassland 274 Comment
  SEINET8349867  Eriogonum nudum Barbara Ertter 1997-8-18 15766 Contra Costa Antioche Dunes (USFWS National Wildlife Refuge) on San Joaquin River east of Antioch, southwest corner of refuge north of railroad tracks in former vineyard. Comment
  UC1586123  Orobanche fasciculata Barbara Ertter with Elizabeth Neese 1988-4-24 7451 Contra Costa Black Diamond Mines Regional Preserve SW of Antioch, above powerline road E of Nortonville Road. Comment
  UC1606406  Aristolochia californica Barbara Ertter 1993-4-2 11476 Contra Costa below Vista Rd. w. of Crockett (midslope, Carquinez Regional Park); Carquinez Regional Park Comment
  UC1607636  Phacelia distans Barbara Ertter 1991-5-5 9786 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, base of steep cut on N side of Black Diamond Trail ca 1/4 mi E of pond sandstone substrate 426 Comment
  UC1618294  Cuscuta salina var. major Barbara Ertter 1990-9-30 9658 Contra Costa SW corner of park, Point Pinole Regional Shoreline on San Pablo Bay, north Richmond; NW Contra Costa County Comment
  UC1619999  Cotoneaster pannosus Barbara Ertter 1997-1-5 15431 Contra Costa Ygnacio Valley Road at Lime Ridge between Walnut Creek and Clayton, south facing roadcut. Comment
  UC1719978  Geranium purpureum Barbara Ertter 2000-5-14 17012 Contra Costa Mount Diablo Regional Park, Falls Trail at Donner Creek crossing 487 Comment
  UC1784907  Epilobium ciliatum subsp. ciliatum Barbara Ertter 1994-6-26 12875 Contra Costa S of Point Molate Beach Park in W Richmond N of San Rafael Bridge, at edge of San Francisco Bay Comment
  UC1784908  Polygonum aviculare subsp. depressum Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15671 Contra Costa Martinez Comment
  UC1789099  Equisetum arvense Barbara Ertter 2005-8-18 18637 Contra Costa San Pablo Reservoir in East Bay Hills, east of San Pablo Dam Road between Richmond and Orinda (EBMUD water storage from Mokelumne River watershed); mudflats left by receding reservoir (being drained for seismic work on dam). Comment
  UC1789153  Ligustrum Barbara Ertter, Joanne Kerbabaz and Jeff Greenhouse 2000-10-26 17547 Contra Costa Mount Diablo State Park, a single sterile young shrub at a permanent spring-fed pond (''Secret Pond'') in angle of Stage Road and lower Barbeque Road, sahded by Aesculus. Comment
  UC1789166  Vitis Barbara Ertter 1995-4-27 14020 Contra Costa walkway along ditch between Valley Vista and Arbolado Park, Walnut Creek, ca 300 ft; naturalized on concrete ditchbank, twigs red, flowers green, fragrant. Comment
  UC1789170  Epipactis helleborine Barbara Ertter 2001-10-29 17811 Contra Costa Tilden Regional Park, Wildcat Gorge upstream from Lake Anza, understory of mixed forest; scattered plants. Comment
  UC1789207  Amaryllis belladonna Barbara Ertter 2002-8-24 18029 Contra Costa NE corner of Mount Diablo State park, along upper bridle path S of Mount Diablo Mine property, apparent site of old homestead (only rocked terraces left) 274 Comment
  UC1795617  Rosa Barbara Ertter 1993-4-2 11481 Contra Costa along railroad west of Crockett at west edge of Carquinez Straits Comment
  UC1795651  Holocarpha heermannii Barbara Ertter, Brad Olson, Diane Lake, Seth Adams, et al. 1994-9-11 13096 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton,, open slopes between ponds at south foot of ridge, open woodland/ grassland, heavily grazed. Comment
  UC1795655  Juncus occidentalis Barbara Ertter, Gary Schoolcraft, Tony Morosco 1996-4-6 14566 Contra Costa West end Oyster Point Rd in Mt Diablo State Park, moist meadow just east of junction. Comment
  UC1795656  Cardamine californica var. californica Barbara Ertter, Gary Schoolcraft 1996-4-7 14580 Contra Costa Molate Beach Park on San Francisco Bay north of San Rafael Bridge; coastal prairie and brushland on bluff. Comment
  UC1795663  Helianthus californicus Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14628 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC1795668  Juncus bufonius var. congestus Barbara Ertter, Mary Bowerman et al. 1995-5-7 14037 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, damp road bed, clayey, in grassy flat south of pond, near edge of blue oak forest. Comment
  UC1795669  Stachys pycnantha Barbara Ertter, Kristin Ertter 1995-7-11 14484 Contra Costa West side of Mt Diablo SW of Walnut Creek. 182 Comment
  UC1795685  Deinandra kelloggii Barbara Ertter, Chris Thayer 1994-5-19 12783 Contra Costa Roadside opposite east end of Antioch Dunes, south side of Wilbur Avenue north of railroad tracks east of Antioch Comment
  UC1795691  Pseudognaphalium thermale Barbara Ertter, Kristin Ertter 1995-7-11 14469 Contra Costa Pine Creek on west side of Mt. Diablo southwest of Walnut Creek; Diablo Foothills Regional Park, on rock slope. Comment
  UC1795692  Clarkia unguiculata Barbara Ertter, Kristin Ertter 1995-7-11 14477 Contra Costa Stage Road along Pine Cr. in Diablo Foothills Regional Park southwest of Walnut Creek; partial shade of oak forest, 152 Comment
  UC1795694  Polygonum amphibium var. emersum Barbara Ertter, Kristin Ertter 1995-7-11 14482 Contra Costa West side of Mt Diablo SW of Walnut Creek; dense growth at lower end of Pine Pond, in sun. 182 Comment
  UC1795699  Lavatera assurgentiflora Barbara Ertter, Rich Rabeler 1994-6-6 12822 Contra Costa Point Isabel in south Richmond; acacia copse at edge of bay at south side of point. Comment
  UC1795703  Agoseris grandiflora Barbara Ertter, Dale Sanders, Dan Norris 1994-3-26 12333 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road 30 Comment
  UC1795705  Sanicula bipinnatifida Barbara Ertter, Dale Sanders, Dan Norris 1994-3-26 12335 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road 30 Comment
  UC1795709  Agoseris apargioides var. apargioides Barbara Ertter, Lincoln Constance 1995-6-16 14259 Contra Costa Alameda/Contra Costa county line. Skyline serpentine grassland in Redwood Regional Park (east of old HQ on Skyline Rd.). Comment
  UC1795716  Claytonia rubra subsp. depressa Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14591 Contra Costa North Peak of Mt. Diablo; open rocky flats. Comment
  UC1795717  Layia platyglossa Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14589 Contra Costa North Peak of Mt. Diablo; open rocky flats. 1097 Comment
  UC1795738  Eriogonum nudum var. auriculatum Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14675 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; grassland/scrub at northeast corner of area. Comment
  UC1795741  Malacothamnus hallii Barbara Ertter, Tom Delendick 1996-5-2 14610 Contra Costa Mount Diablo State Park, North Gate Rd. near base of Long Ridge, at old developed spring, mixed scrub. 182 Comment
  UC1795746  Microseris douglasii subsp. douglasii Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14241 Contra Costa South side Mount Diablo, edge of open meadow in flats near head of Curry Creek along road to Sheepherders Springs from Sloan Road, clay soil. 426 Comment
  UC1795751  Microseris douglasii Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14585 Contra Costa Crest of Marsh Creek Road on north side of Mt. Diablo southeast of Clayton, south-facing roadcut opposite entrance to Three Springs Trail; annual grasses and Lotus. 274 Comment
  UC1795758  Astragalus gambelianus Barbara Ertter, Mary Bowerman et al. 1995-5-7 14061 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, small serpentine patch at road junction Comment
  UC1795760  Gilia achilleifolia subsp. multicaulis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14226 Contra Costa Mt. Diablo southeast of Walnut Creek, serpentine knoll ca 1/2 airmile north of Curry Point, grassland, oaks around knoll. . 487 Comment
  UC1795765  Pentachaeta alsinoides Barbara Ertter, Lisa Schultheis 1995-4-27 14006 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC1795767  Juncus phaeocephalus var. paniculatus Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14232 Contra Costa South side Mount Diablo, Sheepherder Springs complex 1/2 mile north of Curry Point, wet ground in grassland. 487 Comment
  UC1795768  Delphinium hesperium subsp. hesperium Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14242 Contra Costa South side Mount Diablo, edge of open meadow in flats near head of Curry Creek along road to Sheepherders Springs from Sloan Road; mixed grassland on north-facing slope. 426 Comment
  UC1795791  Callitriche heterophylla var. bolanderi Barbara Ertter, Mary Bowerman et al. 1995-5-7 14034 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, in water of pond west of road in grassy flat. Comment
  UC1795800  Cryptantha torreyana Barbara Ertter, Mary L. Bowerman 1994-6-19 12846 a Contra Costa Mt. Diablo State Park east of Walnut Creek; lower Summit Parking Lot, opening on North side, 1127 Comment
  UC1795803  Wyethia angustifolia Barbara Ertter, Lisa Schultheis 1995-4-27 14007 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC1795805  Lupinus microcarpus var. microcarpus Barbara Ertter, Lisa Schultheis 1995-4-27 14011 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC1795817  Centaurium muehlenbergii Barbara Ertter 1994-6-26 12873 Contra Costa South of Point Molate Beach Park in west Richmond north of San Rafael Bridge, Franciscan Formation bluffs, sheltered bank along beach just south of park boundary. Comment
  UC1795830  Trifolium albopurpureum var. albopurpureum Barbara Ertter, Chris Thayer 1995-4-25 13983 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Sycamore Canyon trail from Knobcone Point Rd., open grassland. 457 Comment
  UC1795832  Micropus californicus var. californicus Barbara Ertter, Lisa Schultheis 1995-4-27 14003 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC1795834  Trifolium bifidum var. decipiens Barbara Ertter, Chris Thayer 1995-4-25 13982 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Sycamore Canyon trail from Knobcone Point Rd., open grassland. 457 Comment
  UC1795835  Trifolium depauperatum var. truncatum Barbara Ertter, Gary Schoolcraft 1996-4-7 14571 Contra Costa Point San Pablo in west Richmond, crest of road to yacht harbor, coastal grassland along ridge, scraped roadbed to tower. Comment
  UC1795841  Holocarpha heermannii Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14528 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. southeast of Clayton dried grasslands at base of trail. 304 Comment
  UC1795842  Trichostema lanceolatum Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14530 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd., dried roadside pond, clay. Comment
  UC1795844  Cordylanthus pilosus subsp. pilosus Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14537 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, in woods above ranch, north-facing slope. Comment
  UC1795853  Dichondra donelliana Barbara Ertter, Gary Schoolcraft 1996-4-7 14574 Contra Costa Point San Pablo in west Richmond, crest of road to yacht harbor, coastal grassland along ridge, scraped roadbed to tower. Comment
  UC1795854  Lupinus albifrons var. albifrons Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14594 Contra Costa Sycamore Spring Trail off Prospectors Gap Rd., east side Mt. Diablo. 640 Comment
  UC1795876  Claytonia parviflora subsp. parviflora Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14590 Contra Costa North Peak of Mt. Diablo; open rocky flats. 1097 Comment
  UC1795880  Carex praegracilis Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14672 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; wetlands behind facilities at base of ''D'' road. Comment
  UC1795887  Cardaria draba Barbara Ertter, Rich Rabeler 1994-6-6 12819 Contra Costa Point Isabel in south Richmond; south of Central Avenue in brome field. Comment
  UC1795899  Clarkia Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14638 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; grassy hillside. Comment
  UC1795900  Clarkia affinis Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14639 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; grassy hillside. Comment
  UC1818859  Typha domingensis Barbara Ertter, Kristin Ertter 1995-7-11 14483 Contra Costa W side of Mount Diablo SW of Walnut Creek, lower end of Pine Pond 182 Comment
  UC1818864  Eleocharis macrostachya Barbara Ertter, Kristin Ertter 1995-7-11 14471 Contra Costa Sulfur Spring on Pine Cr, Diblo Foothill Regional Park, marshy wet ground. 121 Comment
  UC1818867  Juncus bufonius var. congestus Barbara Ertter, Kristin Ertter 1995-7-11 14476 Contra Costa Sulfur Spring on Pine Cr, Diablo Foothills Regional Park SW of Walnut Creek; marshy wet ground. 121 Comment
  UC1818868  Symphyotrichum chilense Barbara Ertter, Lisa Schultheis, Laura Fujii 1995-12-30 14543 Contra Costa Mount Diablo, road to Black Hawk Ridge, north-facing clay slope covered 487 Comment
  UC1818878  Carex serratodens Barbara Ertter, Kristin Ertter 1995-7-11 14487 Contra Costa Partial shade of willows, mudflat around Pine Pond inlet. Comment
  UC1818886  Cheilanthes covillei Barbara Ertter, Lisa Schultheis 1995-2-1 13923 Contra Costa Mount Diablo ESE of Walnut Creek; Murchio Gap, base of rocks on northwest side of road, ca 2300' Comment
  UC1818892  Parvisedum pentandrum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14058 Contra Costa Three-Springs Creek open north facing slope around rock outcrops (near creek crossing above woods) with seepage. Comment
  UC1818896  Rigiopappus leptocladus Barbara Ertter, Mary Bowerman et al. 1995-5-7 14063 Contra Costa Three-Springs Trail on NE side of Mt. Diablo SE of Clayton, small serpentine patch at road junction Comment
  UC1818897  Lagophylla ramosissima Barbara Ertter, Mary Bowerman et al. 1995-5-7 14062 Contra Costa Three Springs Trail on NE side of Mount Diablo SE of Clayton, small serpentine patch at road junction Comment
  UC1818898  Minuartia pusilla Barbara Ertter, Mary Bowerman et al. 1995-5-7 14064 Contra Costa Three-Springs Trail on NE side of Mount Diablo SE of Clayton, small serpentine patch at road junction Comment
  UC1818901  Spergularia marina Barbara Ertter, Drew Hansen 1995-3-28 13939 Contra Costa Chevron oil refinery in northwest Richmond off of Castro St. edge of levees thru created bioremediation marsh south of Wildcat Creek. Comment
  UC1818903  Mimulus rattanii Barbara Ertter, Mary Bowerman 1994-6-19 12845 a Contra Costa Mt. Diablo State Park east of Walnut Creek; lower Summit Parking Lot, opening on North side, ca. 3700'. Comment
  UC1818906  Trifolium ciliolatum Barbara Ertter, Chris Thayer 1995-4-25 13988 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Devil's Slide area of Sycamore Canyon, roadside thru chaparral zone. 304 Comment
  UC1818909  Isoetes howellii Barbara Ertter, Mary Bowerman et al. 1995-5-7 14032 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, in water of pond west of road in grassy flat. Comment
  UC1818918  Polygonum lapathifolium Barbara Ertter 1995-8-19 14503 Contra Costa Edge of Cerrito Creek on north side of Albany Hill, south edge of El Cerrito; dense weeds at edge of sluggish water. Comment
  UC1818919  Hesperocnide tenella Barbara Ertter, Mary Bowerman et al. 1995-5-7 14054 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, road behind honses traversing north facing slope, mixed forest with much undergrowth. Comment
  UC1818922  Cryptantha flaccida Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14227 Contra Costa Mt. Diablo southeast of Walnut Creek, serpentine knoll ca 1/2 airmile north of Curry Point, grassland, oaks around knoll. . 487 Comment
  UC1818929  Euphorbia spathulata Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14586 Contra Costa East side of Mt. Diablo, access from Morgan Territory Rd. to Prospectors Gap Rd., gate between archery range and private ranch, open oak woodland. Comment
  UC1818931  Claytonia exigua subsp. exigua Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14592 Contra Costa Mount Diablo; ; North Peak of Mt. Diablo; open rocky flats. Comment
  UC1818933  Delphinium patens Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14595 Contra Costa Sycamore Spring Trail off Prospectors Gap Rd., east side Mt. Diablo. 640 Comment
  UC1818941  Mentzelia dispersa Barbara Ertter, Mary Bowerman 1994-6-19 12849 a Contra Costa Mt. Diablo State Park east of Walnut Creek; lower Summit Parking Lot, roadside. Comment
  UC1818943  Pseudognaphalium thermale Barbara Ertter, Gary Schoolcraft 1996-4-7 14569 Contra Costa Point San Pablo in west Richmond, crest of road to yacht harbor, coastal grassland on ridge southwest-facing slope. Comment
  UC1818950  Microseris douglasii subsp. douglasii Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14240 Contra Costa S side Mount Diablo, edge of open meadow in flats near head of Curry Creek along road to Sheepherders Springs from Sloan Road 426 Comment
  UC1818957  Clarkia purpurea subsp. quadrivulnera Barbara Ertter, Kristin Ertter 1995-7-11 14478 Contra Costa Pine Creek on West side of Mt. Diablo southwest of Walnut Creek; partial shade of oak forest, road along Pine Cr. in Diablo Foothills Regional Park 152 Comment
  UC1818969  Eremocarpus setiger Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14529 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. southeast of Clayton dried grasslands at base of trail. 304 Comment
  UC1818970  Epilobium campestre Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14531 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. dried roadside pond, clay. Comment
  UC1818976  Nemophila heterophylla Barbara Ertter 1996-3-30 14561 Contra Costa Albany Hill, northwest corner above ball courts, edge of steep informal path, partial shade of eucalyptus. Comment
  UC1818977  Ranunculus californicus Barbara Ertter, Gary Schoolcraft, Tony Morosco 1996-4-6 14562 Contra Costa Grassy ridge east of Curry Point, Mount Diablo edge of Knobcone Point Road near Sloan Road junction, clay soil. 548 Comment
  UC1818979  Microseris elegans Barbara Ertter, Dale Sanders, Dan Norris 1994-3-26 12336 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road, west foot of hill near edge of marsh, openings in grassland. Comment
  UC1818984  Erigeron foliosus var. franciscensis Barbara Ertter 1994-6-26 12874 Contra Costa South of Point Molate Beach Park in west Richmond north of San Rafael Bridge, perennial grassland on bluff above beach between park and Point Castro. Comment
  UC1818987  Zannichellia palustris Barbara Ertter, Lisa Schultheis 1995-4-27 14021 Contra Costa Walnut Creek near Lime Ridge, concrete ditch/walkway between Valley Vista and Arbolado Park. 91 Comment
  UC1818992  Uropappus lindleyi Barbara Ertter, Lisa Schultheis 1995-4-27 14010 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC1818994  Juncus balticus Barbara Ertter, Mary Bowerman et al. 1995-5-7 14030 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, wet ground around small pond west of road in grassy flat. Comment
  UC1818995  Epilobium ciliatum subsp. ciliatum Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14632 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC1818996  Juncus xiphioides Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14630 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC1819006  Lupinus formosus var. formosus Barbara Ertter, Brad Olson, Diane Lake, Seth Adams, et al. 1994-9-11 13095 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton,, open slopes between ponds at south foot of ridge, open woodland/ grassland, heavily grazed. Comment
  UC1819011  Rafinesquia californica Barbara Ertter, Mary Bowerman et al. 1995-5-7 14052 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, open oak forest above houses. Comment
  UC1819012  Allium unifolium Barbara Ertter, Mary Bowerman et al. 1995-5-7 14057 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, creek crossing on north-facing slope, edge of woods and open slopes. Comment
  UC1819013  Juncus bufonius var. bufonius Barbara Ertter, Mary Bowerman et al. 1995-5-7 14040 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, damp road bed, clayey, in grassy flat south of pond, near edge of blue oak forest. Comment
  UC1819017  Centromadia pungens subsp. pungens Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14679 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; packed ground around Tank 14 in center of hillside. Comment
  UC1819018  Castilleja densiflora subsp. densiflora Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14676 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; grassland/scrub at northeast corner of area. Comment
  UC1819019  Juncus xiphioides Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14673 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; wetlands behind facilities at base of ''D'' road. Comment
  UC1819025  Verbena lasiostachys var. scabrida Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14633 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC1819029  Corallorhiza striata Barbara Ertter, Chris Thayer 1994-5-19 12785 Contra Costa Redwood Regional Park in Oakland Hills, mid-trail on Mill Trail southeast of Redwood Peak Comment
  UC1819031  Orobanche uniflora Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13945 Contra Costa Mount Diablo State Park, steep west-facing bank with outcrops near weir at mouth of Mitchell Canyon. Comment
  UC1819039  Linanthus bicolor Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14239 Contra Costa South side Mount Diablo, road to Sheepherders Springs 1/2 mile north of Curry Point from Sloan Road, clay at edge of grassland/woodland. 426 Comment
  UC1819043  Cyperus eragrostis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14235 Contra Costa South side Mount Diablo, Sheepherder Springs complex 1/2 mile north of Curry Point, wet ground in grassland. 487 Comment
  UC1819047  Castilleja attenuata Barbara Ertter, Lisa Schultheis 1995-4-27 14004 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC1819048  Castilleja attenuata Barbara Ertter, Lisa Schultheis 1995-4-27 14005 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC1819049  Microseris douglasii subsp. douglasii Barbara Ertter, Lisa Schultheis 1995-4-27 14012 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC1819050  Juncus bufonius var. congestus Barbara Ertter, Lisa Schultheis 1995-4-27 14009 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC1819052  Psilocarphus tenellus Barbara Ertter, Chris Thayer 1995-4-25 13990 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Devil's Slide area of Sycamore Canyon, roadside thru chaparral zone. 304 Comment
  UC1819056  Lomatium macrocarpum Barbara Ertter, Susan D'Alcamo 1994-4-24 12460 Contra Costa Mount Diablo east Walnut Creek, Deer Flat road between Juniper Campground and Deer Flat 762 Comment
  UC1819061  Trifolium willdenovii Barbara Ertter, Gary Schoolcraft 1996-4-7 14570 Contra Costa Point San Pablo in west Richmond, crest of road to yacht harbor, coastal grassland along ridge, scraped roadbed to tower. Comment
  UC1819260  Lathyrus vestitus var. vestitus Barbara Ertter, Dale Sanders, Dan Norris 1994-3-26 12332 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road, southeast side of hill, with dense patches of Wyethia angustifolia. 30 Comment
  UC1861822  Galium californicum subsp. californicum Barbara Ertter, Chris Thayer 1995-4-25 14000 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd. at northeast FK of Sycamore Creek, 396 Comment
  UC1861825  Camissoniopsis intermedia Barbara Ertter, Chris Thayer 1995-4-25 13989 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Devil's Slide area of Sycamore Canyon, roadside thru chaparral zone. 304 Comment
  UC1861832  Madia sativa Barbara Ertter with Richard Rabeler 1994-6-18 12838 Contra Costa Pt. Pinole Regional Shoreline at north end of Richmond; northeast corner of park, near jct. Marsh Trail and Cook's Point Trail. Comment
  UC1949061  Sidalcea malviflora var. malviflora Barbara Ertter 1991-6-1 10075 Contra Costa Las Trampas Regional Wilderness in hills W of Danville, steep E-facing slope at N end Rocky Ridge Trail Comment
  UC1949066  Astragalus gambelianus Barbara Ertter 2005-5-8 18566 Contra Costa Mount Diablo State Park, Burma Road below Moses Rock Spring on Long Ridge Comment
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Feb 13 2016
  UC1949074  Salsola tragus Barbara Ertter with CNPS 1990-9-16 9644 Contra Costa Bethel Island NE of Brentwood, E end of Gateway Road at W edge of Franks Tract State Recreation Area Comment
  UC1949099  Cuscuta pacifica var. pacifica Barbara Ertter with Elizabeth Neese 1988-10-15 7978 Contra Costa Salicornia marsh W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue Comment
  UC1949100  Marah fabacea Barbara Ertter 1991-6-1 10076 Contra Costa Las Trampas Regional Wilderness in hills W of Danville, steep E-facing slope at N end Rocky Ridge Trail Comment
  UC1949170  Phyla nodiflora var. nodiflora Barbara Ertter 1990-9-10 9634 Contra Costa Briones Regional Park, Briones hills S of Martinez, dried margin of Maricich Lagoon at junction of Alhambra Creek Trail and Old Briones Road Comment
  UC1949224  Salicornia virginica Barbara Ertter with Elizabeth Neese 1988-10-15 7974 Contra Costa W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue Comment
  UC1949232  Sanicula bipinnata Barbara Ertter with Michelle Seidl 1992-3-14 10913 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo; along Blue Oak Trail Comment
  UC1949240  Sanicula tuberosa Barbara Ertter with Michelle Seidl 1992-3-14 10914 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo; along Blue Oak Trail Comment
  UC1949241  Sanicula saxatilis Barbara Ertter with Brad Olson, Lynne Hosley, et al. 1991-4-7 9728 Contra Costa Eagle peak on Mount Diablo; slopes on E and SW side Comment
  UC1949286  Limnanthes douglasii subsp. rosea Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 Contra Costa sink W and adjacent to Clifton Court Forebay, ca 15 airmiles SW of Stockton Comment
  UC1949316  Hesperevax sparsiflora Barbara Ertter 1991-5-5 9784 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, along spur road from Black Diamond Trail on ridge SE of Coal Canyon Comment
  UC1949380  Eichhornia crassipes Barbara Ertter 1990-9-16 9642 Contra Costa Junction of Cypress Road & Jersey Island Road E of Oakley Comment
  UC1949386  Lepidium latifolium Barbara Ertter with CNPS 1990-9-16 9649 Contra Costa SE side of Holland Tract NE of Brentwood Comment
  UC1950064  Crypsis vaginiflora Barbara Ertter 1989-9-30 8865 Contra Costa Tilden Regional Park E of El Cerrito, East Bay Skyline Nat'l Recreation Trail (=Nimitz Way), pond 1 1/4 mi NW of Inspiration Point. Comment
  UC1950125  Hordeum marinum subsp. gussoneanum Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8121 Contra Costa alkali sink W and adjacent to Clifton Court Forebay, ca 15 airmiles SW of Stockton Comment
  UC1950126  Hordeum marinum subsp. gussoneanum Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8140 Contra Costa alkali sink W and adjacent to Clifton Court Forebay, ca 15 airmiles SW of Stockton Comment
  UC1950181  Salsola soda Barbara Ertter with Elizabeth Neese 1988-10-15 7980 Contra Costa W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue Comment
  UC1950189  Schoenoplectus californicus Barbara Ertter 1990-9-10 9639 Contra Costa Briones Regional Park, Briones Hills S of Martinez, at margin of main Sindicich Lagoon Comment
  UC1950198  Plantago erecta Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8141 Contra Costa sink W and adjacent to Clifton Court Forebay, ca 15 airmiles SW of Stockton Comment
  UC1950199  Anagallis arvensis Barbara Ertter 1993-5-7 11717 Contra Costa Berkeley-Oakland Hills, horse trail southeast of Vollmer Peak east of Tilden Park stream trains Comment
  UC1950229  Phacelia ciliata Barbara Ertter 1992-3-8 10910 Contra Costa NE edge of Black Diamond Mines Regional Preserve, NE-heading canyon with steep loose sides ca 1/2 mi W of junction of Stewartville Trail and Fredrickson Lane Comment
  UC1950230  Mentzelia affinis Barbara Ertter 1992-3-8 10911 Contra Costa Contra Loma Regional Park; hill ca 1/2 mi SW of reservoir Comment
  UC1950231  Plagiobothrys acanthocarpus Barbara Ertter 1992-3-8 10911 Contra Costa Contra Loma Regional Park; flat NE of bend in Frederickson Lane Comment
  UC1950410  Stuckenia filiformis subsp. alpina Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10715 Contra Costa Brown Island N of Pittsburg near confluence of Sacramento & San Joaquin rivers opposite Pittsburg Marina; at W end of island Comment
  UC1950411  Potamogeton diversifolius Barbara Ertter with Brad Olson 1991-9-28 10839 Contra Costa San Pablo Reservoir between Orinda and El Sobrante, at S end of reservoir Comment
  UC1950414  Stuckenia pectinata Barbara Ertter with Brad Olson 1994-8-8 12202 Contra Costa Bishop Ranch Regional Open Space southwest of San Ramon Comment
  UC1950424  Bolboschoenus maritimus subsp. paludosus Barbara Ertter 1990-9-10 9640 Contra Costa Briones Regional Park, Briones Hills S of Martinez, at margin of main Sindicich Lagoon Comment
  UC1950447  Blennosperma nanum var. nanum Barbara Ertter 1992-3-8 10908 Contra Costa Byron Springs Road 4-5 miles south of junction with J4, near Armstrong Road Comment
  UC1952810  Madia elegans Barbara Ertter with Christopher Davidson 2010-9-1 20569 Contra Costa lower Donner Canyon on north base of Mount Diablo Comment
  UC1952818  Lupinus arboreus Barbara Ertter 2010-5-12 19834 Contra Costa Miller Knox Regional Shoreline at south edge of Point Richmond; base of rocky slop near south end of Dornan Drive below West Ridge Point. Comment
  UC1952821  Olea europaea Barbara Ertter with David Gowen 2010-11-17 20701 Contra Costa north face of Lime Ridge Open Space (City of Walnut Creek). Comment
  UC2012948  Beta vulgaris Barbara Ertter 1990-10-24 9685 Contra Costa Martinez Regional Shoreline on Carquinez Strait. Comment
  UC2012949  Tribulus terrestris Barbara Ertter with CNPS Volunteers 1990-9-16 9643 Contra Costa NE Contra Costa Co. Bethel Island NE of Brentwood, E end of Gateway Road at W edge of Franks Tract State Regional Area. Comment
  UC2012961  Galium murale Barbara Ertter with Travis Columbus 1990-6-10 9114 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill: near crossing on Spengler Trail NE of Briones Peak. Comment
  UC2012962  Sambucus mexicana Barbara Ertter with Travis Columbus 1990-6-10 9112 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; edge of stream near crossing on Spengler Trail NE of Briones Peak. Comment
  UC2012963  Anthriscus caucalis Barbara Ertter with Travis Columbus 1990-6-10 9111 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill, damp soil in eroded stream cut, near crossing on Spengler Trail NE of Briones Peak. Comment
  UC2012964  Clarkia rubicunda Barbara Ertter with Travis Columbus 1990-6-10 9103 Contra Costa NE corner of Briones Regional Paark, Briones Hills W of Pleasant Hill, jct of Briones Crest and Table Top trails E of Briones Peak. Comment
  UC2012972  Symphyotrichum chilense Barbara Ertter with Lisa Schultheis 1996-9-2 15281 Contra Costa Below Knobcone Point Road along path to Devil's Slide southeast of Curry Point. Comment
  UC2012977  Amsinckia lunaris Barbara Ertter with Chris Thayer 1993-5-7 11707 Contra Costa Ca 1/2 mile north of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land east of Tilden Park. Comment
  UC2012979  Ericameria arborescens Barbara Ertter with Brad Olson, Dianne Hake, Seth Adams, et. al. 1994-9-11 13091 Contra Costa Chaparral Sprs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton open oak woodland. Comment
  UC2012980  Setaria viridis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14921 Contra Costa Northwest base of Mt. Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  UC2012984  Heterotheca sessiliflora subsp. echioides Barbara Ertter with Lisa Schultheis 1996-9-2 15275 Contra Costa South side of Mount Diablo, west end of Blackhawk Ridge. Comment
  UC2012985  Holocarpha heermannii Barbara Ertter with Lisa Schultheis 1996-9-2 15276 Contra Costa South side of Mount Diablo, west end of Blackhawk Ridge. Comment
  UC2012986  Panicum capillare Barbara Ertter with Lisa Schultheis 1996-9-2 15283 Contra Costa South side of Mount Diablo, South Gate Road not far inside park entrance near base of mountain. Comment
  UC2012993  Lepidium oxycarpum Barbara Ertter with Dale Sanders, Dan Norris 1994-3-26 12337 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road, west foot of hill near edge of marsh. Comment
  UC2012995  Prunus dulcis Barbara Ertter with Lisa Schultheis 1996-9-2 15277 Contra Costa South side Mount Diablo, east end of Blackhawk Ridge. Comment
  UC2012998  Solanum nigrum Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14924 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  UC2012999  Malva parviflora Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14923 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  UC2013000  Malva nicaeensis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14922 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  UC2013017  Centaurea calcitrapa Barbara Ertter with Laura Fujii 1990-7-21 9400 Contra Costa Briones Regional Park, Briones Hills W of Pleasant Hill, weedy field along Homestead Valley trail. Comment
  UC2013040  Ribes californicum var. californicum Barbara Ertter with Travis Columbus 1990-6-10 9113 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; edge of stream near crossing on Spengler Trail NE of Briones Peak Comment
  UC2013044  Polypogon viridis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14917 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate road along Little Pine Creek. Comment
  UC2013045  Eleocharis parishii Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14918 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek Comment
  UC2013049  Juncus occidentalis Barbara Ertter with Lisa Schultheis 1996-9-2 15274 Contra Costa South side Mount Diablo, short distance down trail to Oyster point from Blackhawk Ridge road junction. Comment
  UC2013050  Agrostis hallii Barbara Ertter with Lisa Schultheis 1996-9-2 15278 Contra Costa South Side Mount Diablo Blackhawk Road east of Sycamore Creek Road. Comment
  UC2013053  Glycyrrhiza lepidota Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14920 Contra Costa Northwest base of Mount Diablo access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  UC2013054  Cyperus eragrostis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14919 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  UC2013059  Asclepias fascicularis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14916 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  UC2013060  Asclepias fascicularis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14916 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek Comment
  UC2013065  Cynara cardunculus Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14927 Contra Costa Northwest base of Mount Diablo access to Foothills Regional Park from North Gate road along Little Pine Creek. Comment
  UC2013068  Wyethia glabra Barbara Ertter 1990-5-19 8996 Contra Costa Lafayette Ridge of Briones Regional Park N of Lafayette SE of Russell Peak. Comment
  UC2026171  Eryngium castrense Barbara Ertter with Tony Morosco 1996-1-15 14547 Contra Costa Mount Diablo (southeast side) trail from Curry Point to Frog Pond; edge of Sheepherder Pond. Comment
  UC2027712  Lasthenia californica Barbara Ertter with Stu Garrett 1997-3-29 15528 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027713  Ancistrocarphus filagineus Barbara Ertter with Stu Garrett 1997-3-29 15526 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027714  Minuartia douglasii Barbara Ertter with Stu Garrett 1997-3-29 15525 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027716  Ranunculus canus Barbara Ertter with Stu Garrett 1997-3-29 15523 Contra Costa West side Mount Diablo, Burma Road above North Gate Road. Comment
  UC2027717  Lupinus pachylobus Barbara Ertter with Stu Garrett 1997-3-29 15522 a Contra Costa West side Mount Diablo, Burma Road above North Gate Road. Comment
  UC2027731  Cotula australis Barbara Ertter 1997-2-16 15464 Contra Costa Shell Ridge Open Space on west flank of Mount Diablo, roadbed east of and above Deer Lake. Comment
  UC2027733  Prunus dulcis Barbara Ertter 1997-2-16 15460 Contra Costa Shell Ridge Open Space on west flank of Mount Diablo, exposed sandstone on main ridgeline. Comment
  UC2027735  Heterotheca sessiliflora subsp. echioides Barbara Ertter 1997-2-16 15458 Contra Costa Shell Ridge Open Space on west flank of Mount Diablo. Comment
  UC2027738  Prunus cerasifera Barbara Ertter 1997-2-11 15452 Contra Costa North side of Mount Diablo, Donner Cabin site on Donner Canyon Road. Comment
  UC2027739  Stellaria pallida Barbara Ertter 1997-1-5 15444 Contra Costa Lime Ridge Open Space on northwest side of Mount Diablo, section on north side of Ygnacio Valley Road. Comment
  UC2027740  Malvella leprosa Barbara Ertter 1997-1-5 15443 Contra Costa Lime Ridge Open Space on northwest side of Mount Diablo, section on north side of Ygnacio Valley Road. Comment
  UC2027741  Torilis arvensis Barbara Ertter 1996-11-24 15418 Contra Costa Southwest side of Mount Diablo, Wall Point Road across Pine Ridge ca 1/2 air miles ENE of Macedo Ranch. Comment
  UC2027742  Cotula coronopifolia Barbara Ertter 1997-1-5 15439 Contra Costa Lime Ridge Open Space on northwest side of Mount Diablo, section on north side of Ygnacio Valley Road. Comment
  UC2027743  Olea europaea Barbara Ertter 1997-1-5 15437 Contra Costa Lime Ridge Open Space on northwest side of Mount Diablo, section on north side of Ygnacio Valley Road. Comment
  UC2027744  Spergularia rubra Barbara Ertter 1997-1-5 15436 Contra Costa Lime Ridge Open Space on northwest side of Mount Diablo, section on north side of Ygnacio Valley Road. Comment
  UC2027745  Heterotheca grandiflora Barbara Ertter 1997-1-5 15435 Contra Costa Ygnacio Valley Road crossing Lime Ridge on northwest side of Mount Diablo. Comment
  UC2027746  Grindelia hirsutula Barbara Ertter 1997-1-5 15434 Contra Costa Ygnacio Valley Road crossing Lime Ridge on northwest side of Mount Diablo. Comment
  UC2027747  Malus pumila Barbara Ertter 1996-11-24 15427 Contra Costa West side of Mount Diablo, Stage Road below Pine Pond in Pine Canyon. Comment
  UC2027748  Populus fremontii subsp. fremontii Barbara Ertter 1996-11-24 15426 Contra Costa West side of Mount Diablo, Pine Pond along Stage Road in Pine Canyon. Comment
  UC2027749  Poa annua Barbara Ertter 1996-11-24 15424 Contra Costa West side of Mount Diablo, Pine Pond along Stage Road in Pine Canyon. Comment
  UC2027750  Azolla filiculoides Barbara Ertter 1996-11-24 15423 Contra Costa West side of Mount Diablo, Pine Pond along Stage Road in Pine Canyon. Comment
  UC2027751  Lemna minuta Barbara Ertter 1996-11-24 15412 Contra Costa Southwest side of Mount Diablo, streamlet east of Macedo Ranch trailhead. Comment
  UC2027752  Monardella douglasii subsp. douglasii Barbara Ertter with Mary Bowerman 1996-11-1 15408 Contra Costa North base of Mount Diablo, north end of Hetherington Trail along Donner Creek. Comment
  UC2027753  Cardamine hirsuta Barbara Ertter 1997-2-11 15455 Contra Costa north side of Mount Diablo, Mitchell Canyon trailhead parking area, trodden ground. Comment
  UC2027754  Lemna gibba Barbara Ertter 1996-11-24 15413 Contra Costa Southwest side of Mount Diablo, streamlet east of Macedo Ranch trailhead. Comment
  UC2027755  Prunus cerasifera Barbara Ertter, Mary Bowerman 1996-11-1 15407 Contra Costa North base of Mount Diablo, lower Donner Creek. Comment
  UC2027756  Orobanche bulbosa Barbara Ertter, Holly Forbes 1997-4-20 15560 Contra Costa North base of Mount Diablo, dogleg in Eagle Peak Trail from Coulter Pine Trail to Twin Peaks, chamissal. Comment
  UC2027757  Lupinus bicolor Barbara Ertter with Stu Garrett 1997-3-29 15522 Contra Costa West side Mount Diablo, Burma Road above North Gate Road. Comment
  UC2027759  Pyracantha angustifolia Barbara Ertter 1997-1-5 15433 Contra Costa Ygnacio Valley Road crossing Lime Ridge on northwest side of Mount Diablo. Comment
  UC2027760  Heterotheca sessiliflora subsp. echioides Barbara Ertter 1996-11-24 15415 Contra Costa Southwest side of Mount Diablo, Wall Point Road across Pine Ridge ca 1/2 airmiles ENE of Macedo Ranch. Comment
  UC2027761  Cardamine hirsuta Barbara Ertter 1997-2-11 15453 Contra Costa North side of Mount Diablo, Donner Cabin site on Donner Canyon Road. Comment
  UC2027774  Allium unifolium Barbara Ertter with Holly Forbes 1997-4-20 15566 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027775  Leptosiphon ciliatus Barbara Ertter with Holly Forbes 1997-4-20 15565 Contra Costa North base of Mount Diablo at NE base of Eagle Ridge. Comment
  UC2027776  Sanicula crassicaulis Barbara Ertter with Holly Forbes 1997-4-20 15563 Contra Costa North base of Mount Diablo, Eagle Peak Trail on NE side of Eagle Ridge below Twin Peaks. Comment
  UC2027777  Eriophyllum jepsonii Barbara Ertter, Holly Forbes 1997-4-20 15562 Contra Costa north base of Mount Diablo, Eagle Peak Trail on NE side of Eagle Ridge below Twin Peaks. Comment
  UC2027778  Fraxinus dipetala Barbara Ertter with Holly Forbes 1997-4-20 15561 Contra Costa North base of Mount Diablo, Eagle Peak Trail on NE side of Eagle Ridge below Twin Peaks. Comment
  UC2027788  Crassula connata Barbara Ertter 1991-5-5 9787 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, vernally moist flat at edge of Black Diamond Trail ca. 1/4 mi E of pond Comment
  UC2027799  Gilia clivorum Barbara Ertter with Mary Bowerman, Lisa Schultheis 1995-3-31 13946 Contra Costa Mount Diablo State Park, steep west-facing bank with outcrops near weir at mouth of Mitchell Canyon Comment
  UC2027800  Mentha aquatica Barbara Ertter 1996-9-19 15292 Contra Costa Antioch Marina, edge of marsh near parking lot. Comment
  UC2027802  Sanicula tuberosa Barbara Ertter, Holly Forbes 1997-4-20 15557 Contra Costa North side of Mount Diablo, north end of Eagle Peak Ridge on Mitchell Rock Trail between Mitchell Rock and Twin Peaks. Comment
  UC2027804  Nemophila menziesii var. menziesii Barbara Ertter with Holly Forbes 1997-4-20 15554 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027805  Trifolium bifidum var. decipiens Barbara Ertter with Holly Forbes 1997-4-20 15551 Contra Costa North base of Mount Diablo, roadside on trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027806  Triteleia hyacinthina Barbara Ertter with Holly Forbes 1997-4-20 15543 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027807  Delphinium hesperium subsp. hesperium Barbara Ertter with Holly Forbes 1997-4-20 15545 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027808  Microseris douglasii subsp. tenella Barbara Ertter with Holly Forbes 1997-4-20 15549 Contra Costa North base of Mount Diablo, roadside on trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027811  Vicia sativa subsp. sativa Barbara Ertter with Holly Forbes 1997-4-20 15546 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027812  Gilia clivorum Barbara Ertter with Stu Garrett 1997-3-29 15541 Contra Costa West side Mount Diablo, Mothers Trail. Comment
  UC2027813  Uropappus lindleyi Barbara Ertter with Stu Garrett 1997-3-29 15532 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027814  Collinsia sparsiflora var. collina Barbara Ertter with Stu Garrett 1997-3-29 15530 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027816  Microseris douglasii Barbara Ertter with Holly Forbes 1997-4-20 15550 Contra Costa North base of Mount Diablo, roadside on trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027817  Psilocarphus tenellus var. tenellus Barbara Ertter with Stu Garrett 1997-3-29 15535 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027818  Layia gaillardioides Barbara Ertter with Stu Garrett 1997-3-29 15531 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027819  Geranium molle Barbara Ertter with Holly Forbes 1997-4-20 15547 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027820  Hesperevax sparsiflora var. sparsiflora Barbara Ertter with Stu Garrett 1997-3-29 15536 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027821  Leptosiphon androsaceus Barbara Ertter with Stu Garrett 1997-3-29 15529 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027823  Madia elegans Barbara Ertter 2000-11-19 17552 Contra Costa Briones Regional Park, Black Oak Trail. Comment
  UC2027830  Chenopodium californicum Barbara Ertter with Tony Morosco and other CNPS members 2001-5-6 17622 Contra Costa Northwest flank of Mount Diablo, south end of Black Point Trail on tributary of White Canyon. Comment
  UC2027831  Lupinus microcarpus var. microcarpus Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17628 Contra Costa Northwest flank of Mount Diablo, upper Galindo Creek southwest of Mount Zion. Comment
  UC2027833  Helianthus gracilentus Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17632 Contra Costa Northwest flank of Mount Diablo, Ginochio property north of park boundary, upper end of Government Road on Long Ridge. Comment
  UC2027835  Madia gracilis Barbara Ertter 2001-5-10 17636 Contra Costa North flank of Mount Diablo, SE of Mitchell Canyon trailhead, on traversing road to Mitchell Rock Trail. Comment
  UC2027837  Trifolium oliganthum Barbara Ertter with Dan Norris 2001-4-15 17609 Contra Costa West side Mount Diablo, head of W-facing drainage west of China Wall rock formation (off trail between Hanging Valley Trail and China Wall Road). Comment
  UC2027838  Plagiobothrys canescens Barbara Ertter with Dan Norris 2001-4-15 17613 Contra Costa West side Mount Diablo, divide NW of pond at base of China Wall formation. Comment
  UC2027839  Yabea microcarpa Barbara Ertter with Dan Norris 2001-4-8 17575 Contra Costa Lime Ridge Open Space east of Walnut Creek, ca 1/2 mile east of Valley Vista trailhead. Comment
  UC2027841  Epilobium ciliatum Barbara Ertter 2000-9-30 17535 Contra Costa West side Mount Diablo, pond on China Wall Road ca 1/2 mile NW of Macedo Ranch. Comment
  UC2027842  Trifolium gracilentum Barbara Ertter with Dan Norris 2001-4-15 17612 Contra Costa Eest side Mount Diablo, divide NW of pond at base of China Wall formation Comment
  UC2027843  Dysphania ambrosioides Barbara Ertter with Mary Bowerman 1996-11-1 15398 Contra Costa North base of Mount Diablo, downstream from Mitchell Canyon parking lot. Comment
  UC2027844  Trifolium gracilentum Barbara Ertter with Dan Norris 2001-4-15 17610 Contra Costa West side Mount Diablo, head of W-facing drainage west of China Wall rock formation (off trail between Hanging Valley Trail and China Wall Road). Comment
  UC2027846  Amaranthus albus Barbara Ertter, Mary Bowerman 1996-11-1 15402 Contra Costa North base of Mount Diablo, near Donner Canyon trailhead at end of Regency Drive. Comment
  UC2027847  Schinus molle Barbara Ertter, Mary Bowerman 1996-11-1 15401 Contra Costa North base of Mount Diablo, near Donner Canyon trailhead at end of Regency Drive. Comment
  UC2027848  Digitaria sanguinalis Barbara Ertter with Mary Bowerman 1996-11-1 15400 Contra Costa North base of Mount Diablo, near Donner Canyon trailhead at end of Regency Drive. Comment
  UC2027849  Ranunculus canus Barbara Ertter 1997-2-16 15465 Contra Costa Shell Ridge Open Space on west flank of Mount Diablo, NE side of main ridge. Comment
  UC2027850  Yabea microcarpa Barbara Ertter with Holly Forbes 1997-4-20 15555 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2027851  Microseris douglasii subsp. douglasii Barbara Ertter with Stu Garrett 1997-3-29 15527 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027852  Microseris douglasii subsp. douglasii Barbara Ertter with Stu Garrett 1997-3-29 15527 a Contra Costa West side Mount Diablo, Burma Road on Long Ridge Comment
  UC2027863  Horkelia californica var. elata Barbara Ertter with Chris Thayer 1996-10-25 15385 Contra Costa West side of Mount Diablo, North Gate Road 1.0 roadmiles NW of Junction, spring near road. Comment
  UC2027880  Rubus armeniacus Barbara Ertter with Mary Bowerman 1996-11-1 15404 Contra Costa North base of Mount Diablo, lower Donner Creek between trailhead and cabin site. Comment
  UC2027881  Epilobium ciliatum subsp. ciliatum Barbara Ertter 2000-9-30 17534 Contra Costa West side Mount Diablo, pond on China Wall Road ca 1/2 mile NW of Macedo Ranch. Comment
  UC2027883  Symphyotrichum subulatum Barbara Ertter with Chris Thayer 1996-10-25 15368 Contra Costa Northwest flank of Mount Diablo, east end Northgate Trail from North Gate Road to Diablo Foothills Regional Park. Comment
  UC2027885  Chenopodium berlandieri Barbara Ertter, Chris Thayer 1996-10-25 15362 a Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park. Comment
  UC2027888  Euphorbia serpillifolia subsp. serpillifolia Barbara Ertter with Chris Thayer 1996-10-25 15359 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park. Comment
  UC2027889  Crypsis schoenoides Barbara Ertter 1996-10-13 15312 Contra Costa West side Mount Diablo, upper part of North Gate Road. Comment
  UC2027896  Samolus parviflorus Barbara Ertter 1996-9-19 15296 Contra Costa Antioch Marina, tidal edge of delta, with tule, cattails, Phragmites. Comment
  UC2027897  Persicaria hydropiperoides Barbara Ertter 1996-9-19 15295 Contra Costa Antioch Marina, edge of delta. Comment
  UC2027910  Persicaria maculosa Barbara Ertter 2000-9-30 17530 Contra Costa Diablo Foothills Regional Park, Stage Road in Pine Canyon above dry flood control dam. Comment
  UC2027911  Sanicula crassicaulis Barbara Ertter with Dan Norris 2001-4-8 17577 Contra Costa Lime Ridge Open Space east of Walnut Creek, high part of main ridge. Comment
  UC2027912  Amaranthus californicus Barbara Ertter 2000-9-30 17537 Contra Costa West side Mount Diablo, pond on west side of Briones-Mount Diablo Trail south of Stonegate Trail junction. Comment
  UC2027914  Frangula californica subsp. tomentella Barbara Ertter 2000-9-30 17529 Contra Costa Diablo Foothills Regional Park, Stage Road in Pine Canyon. Comment
  UC2027915  Claytonia parviflora subsp. parviflora Barbara Ertter with Dan Norris 2001-4-8 17578 Contra Costa Lime Ridge Open Space east of Walnut Creek, high part of main ridge. Comment
  UC2027916  Lomatium dasycarpum subsp. dasycarpum Barbara Ertter with Dan Norris 2001-4-8 17580 Contra Costa Lime Ridge Open Space east of Walnut Creek, high part of main ridge. Comment
  UC2027917  Plagiobothrys acanthocarpus Barbara Ertter, Dan Norris 2001-4-15 17615 Contra Costa West side Mount Diablo, east end Stonegate Trail. Comment
  UC2027918  Pentachaeta alsinoides Barbara Ertter, Dan Norris 2001-4-8 17581 Contra Costa Lime Ridge Open Space east of Walnut Creek, high part of main ridge. Comment
  UC2027920  Leptosiphon pygmaeus subsp. continentalis Barbara Ertter, Dan Norris 2001-4-8 17582 Contra Costa Lime Ridge Open Space east of Walnut Creek, high part of main ridge. Comment
  UC2027921  Microseris douglasii Barbara Ertter with Dan Norris 2001-4-8 17583 Contra Costa Lime Ridge Open Space east of Walnut Creek, high part of main ridge. Comment
  UC2027922  Trifolium depauperatum var. truncatum Barbara Ertter with Dan Norris 2001-4-15 17611 Contra Costa West side Mount Diablo, outcrops of China Wall rock formation. Comment
  UC2027923  Amsinckia lycopsoides Barbara Ertter, Dan Norris 2001-4-15 17616 Contra Costa Diablo Foothills Regional Park, Stonegate Trail near Foothills Trail junction. Comment
  UC2027924  Thysanocarpus curvipes Barbara Ertter, Dan Norris 2001-4-8 17576 Contra Costa Lime Ridge Open Space east of Walnut Creek, east side of main ridge. Comment
  UC2027925  Trifolium oliganthum Barbara Ertter with Dan Norris 2001-4-15 17608 Contra Costa West side Mount Diablo, south end of Hanging Valley Trail. Comment
  UC2027926  Delphinium patens subsp. patens Barbara Ertter with Linda Vorobik 2001-3-24 17571 Contra Costa Lime Ridge Open Space east of Walnut Creek, eastern edge overlooking Crystal Springs subdivision. Comment
  UC2027927  Castilleja affinis subsp. affinis Barbara Ertter with Linda Vorobik 2001-3-24 17570 Contra Costa Lime Ridge Open Space east of Walnut Creek, eastern edge overlooking Crystal Springs subdivision. Comment
  UC2027928  Prunus virginiana var. demissa Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17633 Contra Costa Northwest flank of Mount Diablo, headwaters of Arroyo del Cerro between Olofson Ridge and Long Ridge. Comment
  UC2027929  Calochortus luteus Barbara Ertter with Dorothy Frantz 2001-5-10 17640 Contra Costa Diablo Foothills Regional Park, Pine Creek south of Castle Rock Recreation Area. Comment
  UC2027930  Salvia spathacea Barbara Ertter with Dorothy Frantz 2001-5-10 17641 Contra Costa Diablo Foothills Regional Park, Pine Canyon a few hundred yards above check dam. Comment
  UC2027933  Conyza canadensis Barbara Ertter with Chris Thayer 1996-10-25 15383 Contra Costa West side of Mount Diablo, North Gate Road 3 road miles below Junction near Mineral Spring. Comment
  UC2027934  Euphorbia maculata Barbara Ertter with Chris Thayer 1996-10-25 15382 Contra Costa West side of Mount Diablo, North Gate Road 3 road miles below Junction near Mineral Spring. Comment
  UC2027935  Crypsis schoenoides Barbara Ertter with Chris Thayer 1996-10-25 15376 Contra Costa West side of Mount Diablo, North Gate Road 3 road miles below Junction near Mineral Spring. Comment
  UC2027936  Eclipta prostrata Barbara Ertter 1996-9-19 15298 Contra Costa Antioch Marina, edge of Dow Marsh lands. Comment
  UC2027937  Forestiera pubescens Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17629 Contra Costa Northwest flank of Mount Diablo, tributary of Galindo Creek on south side of knoll SW of Mount Zion. Comment
  UC2027939  Calochortus venustus Barbara Ertter with Tony Morosco and other CNPS members 2001-5-6 17623 Contra Costa Northwest flank of Mount Diablo, Globe Lily Trail paralleling Mitchell Canyon Road. Comment
  UC2027940  Apiastrum angustifolium Barbara Ertter with Tony Morosco and other CNPS members 2001-5-6 17621 Contra Costa Northwest flank of Mount Diablo, trail on west face of Black Point. Comment
  UC2027941  Delphinium hesperium subsp. pallescens Barbara Ertter with Alan Whittemore, Joanne Kerbavaz, et al. 2001-5-22 17646 Contra Costa South side Mount Diablo, Sycamore Creek Road at Devils Slide area. Comment
  UC2027942  Calycadenia truncata Barbara Ertter 1997-9-7 15799 Contra Costa North side Mount Diablo, Falls Trail in Donner Canyon. Comment
  UC2027944  Arctostaphylos manzanita subsp. laevigata Barbara Ertter 1997-9-7 15797 Contra Costa North side Mount Diablo, Donner Canyon, Middle Trail below Falls Trail junction. Comment
  UC2027945  Cordylanthus pilosus subsp. pilosus Barbara Ertter 1997-9-7 15796 Contra Costa North side Mount Diablo, Donner Canyon Road below Cardinet Oaks Road junction. Comment
  UC2027946  Pyrus communis Barbara Ertter 1997-9-7 15793 Contra Costa North side Mount Diablo, cabin site on Donner Creek, in persisting orchard. Comment
  UC2027947  Pyrus communis Barbara Ertter 1997-9-7 15792 Contra Costa North side Mount Diablo, cabin site on Donner Creek, in persisting orchard. Comment
  UC2027948  Prunus cerasifera Barbara Ertter 1997-9-7 15791 Contra Costa North side Mount Diablo, cabin site on Donner Creek, in persisting orchard. Comment
  UC2027950  Malacothamnus fasciculatus Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17516 Contra Costa South side Mount Diablo, Pioneer Horse Camp. Comment
  UC2027951  Mimulus cardinalis Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17515 Contra Costa South side Mount Diablo, Green Ranch Road at Meridian Springs Creek crossing. Comment
  UC2027953  Nerium oleander Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17509 Contra Costa North side Mount Olympia in Mount Diablo State Park, bulldozed site of former occupation at Zippe Spring. Comment
  UC2027955  Epilobium campestre Barbara Ertter with Joanne Kerbavaz 2000-8-20 17502 Contra Costa Frog Pond on southeast side of Mount Diablo. Comment
  UC2027957  Ranunculus sceleratus Barbara Ertter with Joanne Kerbavaz 2000-8-20 17499 Contra Costa South side Mount Diablo, spring feeding Chase Pond. Comment
  UC2027958  Centaurea solstitialis Barbara Ertter with Joanne Kerbavaz 2000-8-20 17495 Contra Costa South side Mount Diablo, ca halfway up South Gate Road. Comment
  UC2027959  Malva nicaeensis Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15667 Contra Costa Martinez Regional Shoreline, south edge of Carquinez Strait. Comment
  UC2027960  Euphorbia maculata Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15666 Contra Costa Miller Knox Regional Shoreline south of Richmond, parking area for Richmond Ramblers. Comment
  UC2027961  Lythrum hyssopifolia Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15665 Contra Costa Point Richmond, crest of road. Comment
  UC2027962  Eriogonum gracile Barbara Ertter 1997-8-24 15773 Contra Costa Mount Diablo, SE side of peak on Mary Bowerman/Fire Interpretive Trail. Comment
  UC2027963  Eriogonum gracile Barbara Ertter 1997-8-24 15772 Contra Costa Mount Diablo, near first corner on Summit Road below Toyon Campground. Comment
  UC2027964  Ehrendorferia chrysantha Barbara Ertter 1997-8-24 15771 Contra Costa Mount Diablo, near first corner on Summit Road below Toyon Campground. Comment
  UC2027965  Galium californicum subsp. californicum Barbara Ertter 1997-8-24 15770 a Contra Costa South side of Mount Diablo, Curry Canyon Road from Curry Point. Comment
  UC2027966  Cerastium fontanum subsp. vulgare Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15672 Contra Costa Martinez Regional Shoreline, south edge of Carquinez Strait. Comment
  UC2027967  Lepidium pinnatifidum Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15668 Contra Costa Martinez Regional Shoreline, south edge of Carquinez Strait. Comment
  UC2027969  Torilis arvensis Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15661 Contra Costa North base of Mount Diablo, lower end of Mitchell Canyon. Comment
  UC2027971  Crypsis vaginiflora Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15659 Contra Costa North base of Mount Diablo, pond on Three Springs Road. Comment
  UC2027972  Madia sativa Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15664 Contra Costa Point Richmond, crest of road. Comment
  UC2027976  Dichelostemma capitatum subsp. capitatum Barbara Ertter 1997-2-16 15457 Contra Costa Shell Ridge Open Space on west flank of Mount Diablo. Comment
  UC2027977  Amaranthus albus Barbara Ertter with Mary Bowerman 1996-11-1 15397 Contra Costa North base of Mount Diablo, downstream from Mitchell Canyon parking lot. Comment
  UC2027978  Amaranthus blitoides Barbara Ertter with Mary Bowerman 1996-11-1 15397 a Contra Costa North base of Mount Diablo, downstream from Mitchell Canyon parking lot. Comment
  UC2027979  Rubus discolor Barbara Ertter, Mary Bowerman 1996-11-1 15393 Contra Costa North base of Mount Diablo, downstream from Mitchell Canyon parking lot. Comment
  UC2027980  Conyza canadensis Barbara Ertter, Chris Thayer 1996-10-25 15391 Contra Costa Southwest flank of Mount Diablo, lower South Gate Road just inside park boundary. Comment
  UC2027981  Conyza bonariensis Barbara Ertter, Chris Thayer 1996-10-25 15390 Contra Costa Southwest flank of Mount Diablo, lower South Gate Road just inside park boundary. Comment
  UC2027986  Lupinus microcarpus var. densiflorus Barbara Ertter 1998-5-3 16034 Contra Costa east side of Pine Ridge south of Wall Point Road, southwest flank of Mount Diablo. Comment
  UC2027987  Crassula tillaea Barbara Ertter 1998-5-3 16033 Contra Costa Pine Ridge summit of Wall Point Road at southwest base of Mount Diablo. Comment
  UC2027989  Galium murale Barbara Ertter 1998-5-3 16031 Contra Costa Pine Ridge summit of Wall Point Road at southwest base of Mount Diablo. Comment
  UC2027990  Ribes divaricatum var. pubiflorum Barbara Ertter 1998-4-19 16028 Contra Costa Tilden Regional Park, Wildcat Creek Trail to Jewel Lake. Comment
  UC2027991  Vicia sativa subsp. sativa Barbara Ertter with Tony Morosco 1998-4-12 16027 Contra Costa Quarry road at base of Mount Olympia, north side of Mount Diablo. Comment
  UC2027993  Plectritis macrocera Barbara Ertter with Tony Morosco 1998-4-12 16025 Contra Costa Connector trail on north side of Mount Olympia, north side of Mount Diablo. Comment
  UC2027995  Prunus subcordata Barbara Ertter with Tony Morosco 1998-4-12 16023 Contra Costa Mount Olympia on north side of Mount Diablo, midway down Olympia Road from summit. Comment
  UC2027998  Allophyllum gilioides Barbara Ertter with Tony Morosco 1998-4-12 16021 Contra Costa Mount Olympia on north side of Mount Diablo, Olympia Road down ridge west of summit. Comment
  UC2027999  Phacelia divaricata Barbara Ertter with Tony Morosco 1998-4-12 16020 Contra Costa Mount Olympia on north side of Mount Diablo, Olympia Road down ridge west of summit. Comment
  UC2028000  Layia platyglossa Barbara Ertter, Tony Morosco 1998-4-12 16019 Contra Costa Mount Olympia on north side of Mount Diablo, around rocks at summit. Comment
  UC2028001  Phacelia breweri Barbara Ertter with Tony Morosco 1998-4-12 16018 Contra Costa Mount Olympia on north side of Mount Diablo, around rocks at summit. Comment
  UC2028002  Schinus molle Barbara Ertter with Amy Rusev 1998-1-17 15904 Contra Costa Edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry [subsequently developed] on south side of Ygnacio Valley Road. Comment
  UC2028003  Olea europaea Barbara Ertter with Amy Rusev 1998-1-17 15902 Contra Costa Edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry [subsequently developed] on south side of Ygnacio Valley Road. Comment
  UC2028004  Pseudognaphalium canescens Barbara Ertter with Amy Rusev 1998-1-17 15901 Contra Costa edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry [subsequently developed] on south side of Ygnacio Valley Road. Comment
  UC2028005  Heterotheca grandiflora Barbara Ertter with Amy Rusev 1998-1-17 15900 Contra Costa edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry [subsequently developed] on south side of Ygnacio Valley Road. Comment
  UC2028006  Nicotiana glauca Barbara Ertter with Amy Rusev 1998-1-17 15899 Contra Costa Edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry [subsequently developed] on south side of Ygnacio Valley Road. Comment
  UC2028007  Datura wrightii Barbara Ertter with Amy Rusev 1998-1-17 15897 Contra Costa Lime Ridge Open Space at NW foot of Mount Diablo, sandy open N-facing slope on NE corner of open space (off trail). Comment
  UC2028009  Centaurea calcitrapa Barbara Ertter with Amy Rusev 1998-1-17 15894 Contra Costa Lime Ridge Open Space at NW foot of Mount Diablo. Comment
  UC2028010  Conyza canadensis Barbara Ertter 1998-1-4 15888 Contra Costa South end of Diablo Foothills Regional Park southeast of Walnut Creek. Comment
  UC2028011  Symphyotrichum chilense Barbara Ertter 1998-1-4 15886 Contra Costa South end of Diablo Foothills Regional Park southeast of Walnut Creek, Alamo Trail just outside of park. Comment
  UC2028013  Arceuthobium campylopodum Barbara Ertter 1997-11-1 15877 Contra Costa South side Mount Diablo, Knobcone Point Road east of junction with Black Hawk Ridge Road. Comment
  UC2028014  Malacothamnus fasciculatus Barbara Ertter 1997-9-14 15821 Contra Costa Southwest side of Mount Diablo, Wall Point Road at head of Emmons Canyon. Comment
  UC2028015  Conyza canadensis Barbara Ertter 1997-9-14 15820 Contra Costa Southwest side of Mount Diablo, Wall Point Road on open sandstone ridge northwest of Wall Point. Comment
  UC2028018  Azolla filiculoides Barbara Ertter 1998-1-4 15889 Contra Costa South end of Diablo Foothills Regional Park southeast of Walnut Creek, Hazzard Pond north of Livorna Staging Area. Comment
  UC2028019  Arctostaphylos auriculata Barbara Ertter 1997-9-14 15817 Contra Costa Southwest side of Mount Diablo, Wall Point Road on open sandstone ridge northwest of Wall Point. Comment
  UC2028021  Cordylanthus pilosus subsp. pilosus Barbara Ertter 1997-9-14 15815 Contra Costa southwest side of Mount Diablo, Wall Point Road east of crest of ridge. Comment
  UC2028022  Heterotheca sessiliflora subsp. echioides Barbara Ertter 1997-9-14 15812 Contra Costa Southwest side of Mount Diablo, Secret Trail at head of Pine Canyon. Comment
  UC2028023  Madia elegans Barbara Ertter 1997-9-14 15811 Contra Costa Southwest side of Mount Diablo, Secret Trail at head of Pine Canyon. Comment
  UC2028024  Rorippa curvisiliqua Barbara Ertter 1997-9-14 15809 Contra Costa West side of Mount Diablo, ponds along Barbeque Terrace Road in upper Pine Canyon. Comment
  UC2028026  Epilobium densiflorum Barbara Ertter 1997-9-14 15807 Contra Costa West side of Mount Diablo, Pine Creek upstream from Dusty Trail. Comment
  UC2028027  Epilobium ciliatum subsp. ciliatum Barbara Ertter 1997-9-14 15806 Contra Costa West side of Mount Diablo, Pine Creek upstream from Dusty Trail. Comment
  UC2028028  Aira caryophyllea var. caryophyllea Barbara Ertter 1997-9-14 15805 Contra Costa West side of Mount Diablo, Dusty Road at north end of Wall Point Ridge. Comment
  UC2028029  Pogogyne serpylloides Barbara Ertter 1997-9-14 15803 Contra Costa WSW base of Mount Diablo, along creek at fence line between Pine Ridge and lower Wall Point Road from Macedo Ranch. Comment
  UC2028031  Pinus halepensis Barbara Ertter 1997-9-7 15800 Contra Costa North side Mount Diablo, Falls Trail in Donner Canyon. Comment
  UC2028032  Amsinckia menziesii Barbara Ertter 1998-4-4 15946 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, SE of Indian Valley School. Comment
  UC2028033  Lupinus nanus Barbara Ertter 1998-4-4 15944 a Contra Costa Shell Ridge Open Space northwest of Mount Diablo, SE of Indian Valley School. Comment
  UC2028034  Lupinus bicolor Barbara Ertter 1998-4-4 15944 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, SE of Indian Valley School. Comment
  UC2028037  Draba verna Barbara Ertter 1998-3-7 15933 Contra Costa Rock City picnic area on southwest side of Mount Diablo. Comment
  UC2028038  Prunus dulcis Barbara Ertter 1998-3-7 15931 Contra Costa Dan Cook Canyon on southwest side of Mount Diablo. Comment
  UC2028039  Luzula comosa Barbara Ertter 1998-3-7 15930 Contra Costa Dan Cook Canyon on southwest side of Mount Diablo. Comment
  UC2028040  Arctostaphylos glauca Barbara Ertter 1998-3-7 15929 Contra Costa Southwest side of Mount Diablo, west-most knoll on Fossil Ridge, at end of fire road. Comment
  UC2028041  Garrya elliptica Barbara Ertter 1998-3-7 15928 Contra Costa Southwest side of Mount Diablo, west-most knoll on Fossil Ridge, at end of fire road. Comment
  UC2028043  Crassula tillaea Barbara Ertter 1998-3-1 15926 Contra Costa Diablo Foothills Regional Park, Ridge Trail on ridge east of Old Borges Ranch. Comment
  UC2028045  Raphanus raphanistrum Barbara Ertter 1998-3-1 15923 Contra Costa Diablo Foothills Regional Park, just south end of Shell Ridge Loop Trail southeast of Old Borges Ranch. Comment
  UC2028047  Oemleria cerasiformis Barbara Ertter 1998-2-15 15916 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, Coyote Creek upstream from Joaquin Pond. Comment
  UC2028048  Cardamine oligosperma Barbara Ertter 1998-2-15 15914 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, outcrops on north side of Joaquin Ridge south of Indian Creek, +/- wooded. Comment
  UC2028049  Hesperocnide tenella Barbara Ertter 1998-2-15 15913 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, outcrops on north side of Joaquin Ridge south of Indian Creek, +/- wooded. Comment
  UC2028050  Lepidium nitidum Barbara Ertter 1998-2-15 15911 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, roadside near Indian Creek. Comment
  UC2028051  Sedum radiatum Barbara Ertter with Ann Dennis 1998-1-25 15909 Contra Costa Donner Canyon on north side Mount Diablo, Middle Trail/Falls Trail. Comment
  UC2028052  Arctostaphylos manzanita subsp. laevigata Barbara Ertter with Ann Dennis 1998-1-25 15907 Contra Costa Donner Canyon on north side Mount Diablo, Middle Trail/Falls Trail. Comment
  UC2028054  Grindelia hirsutula var. hirsutula Barbara Ertter with Amy Rusev 1998-1-17 15905 Contra Costa Edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry [subsequently developed] on south side of Ygnacio Valley Road. Comment
  UC2028055  Penstemon centranthifolius Barbara Ertter with Amy Rusev 1998-1-17 15896 Contra Costa Lime Ridge Open Space at NW foot of Mount Diablo. Comment
  UC2028057  Cryptantha muricata Barbara Ertter, Tony Morosco 1998-4-12 16017 Contra Costa Mount Olympia on north side of Mount Diablo, around rocks at summit. Comment
  UC2028058  Sanicula tuberosa Barbara Ertter, Tony Morosco 1998-4-12 16016 Contra Costa Mount Olympia on north side of Mount Diablo, around rocks at summit. Comment
  UC2028061  Claytonia parviflora var. parviflora Barbara Ertter, Tony Morosco 1998-4-12 16013 Contra Costa Mount Olympia on north side of Mount Diablo. Comment
  UC2028062  Lasthenia microglossa Barbara Ertter, Tony Morosco 1998-4-12 16012 Contra Costa Mount Olympia on north side of Mount Diablo. Comment
  UC2028063  Claytonia exigua subsp. exigua Barbara Ertter, Tony Morosco 1998-4-12 16011 Contra Costa Mount Olympia on north side of Mount Diablo, East Trail along ridge NE of summit Comment
  UC2028064  Claytonia gypsophiloides Barbara Ertter with Tony Morosco 1998-4-12 16010 Contra Costa Mount Olympia on north side of Mount Diablo, East Trail along ridge NE of summit. Comment
  UC2028066  Boechera breweri subsp. breweri Barbara Ertter, Tony Morosco 1998-4-12 16008 Contra Costa Mount Olympia on north side of Mount Diablo, below false summit on East Trail. Comment
  UC2028067  Marah fabacea Barbara Ertter with Tony Morosco 1998-4-12 16007 Contra Costa Mount Olympia on north side of Mount Diablo, below false summit on East Trail. Comment
  UC2028068  Claytonia exigua subsp. exigua Barbara Ertter, Tony Morosco 1998-4-12 16006 Contra Costa Mount Olympia on north side of Mount Diablo, below false summit on East Trail. Comment
  UC2028069  Delphinium patens subsp. patens Barbara Ertter with Tony Morosco 1998-4-12 16004 Contra Costa Base of Mount Olympia on north side of Mount Diablo, NE of Olympia Trail. Comment
  UC2028070  Erysimum capitatum var. capitatum Barbara Ertter with Tony Morosco 1998-4-12 16003 Contra Costa Base of Mount Olympia on north side of Mount Diablo, NE of Olympia Trail. Comment
  UC2028071  Lupinus nanus Barbara Ertter, Tony Morosco 1998-4-12 16002 a Contra Costa Base of Mount Olympia on north side of Mount Diablo, NE of Olympia Trail. Comment
  UC2028072  Crassula tillaea Barbara Ertter with Tony Morosco 1998-4-12 15995 Contra Costa Base of Mount Olympia on north side of Mount Diablo, base of quarry NE of Olympia Trail. Comment
  UC2028073  Sagina apetala Barbara Ertter, Tony Morosco 1998-4-12 15994 Contra Costa Base of Mount Olympia on north side of Mount Diablo, base of quarry NE of Olympia Trail. Comment
  UC2028074  Galium murale Barbara Ertter, Tony Morosco 1998-4-12 15993 Contra Costa Base of Mount Olympia on north side of Mount Diablo, base of quarry NE of Olympia Trail. Comment
  UC2028075  Lupinus pachylobus Barbara Ertter, Tony Morosco 1998-4-12 16002 Contra Costa Base of Mount Olympia on north side of Mount Diablo, NE of Olympia Trail. Comment
  UC2028076  Nemophila heterophylla Barbara Ertter, Tony Morosco 1998-4-12 15998 Contra Costa Base of Mount Olympia on north side of Mount Diablo, talus above quarry NE of Olympia Trail. Comment
  UC2028077  Lithophragma heterophyllum Barbara Ertter, Tony Morosco 1998-4-12 15997 Contra Costa Base of Mount Olympia on north side of Mount Diablo, talus above quarry NE of Olympia Trail. Comment
  UC2028079  Psilocarphus tenellus var. tenellus Barbara Ertter, Tony Morosco 1998-4-12 15991 Contra Costa Base of Mount Olympia on north side of Mount Diablo, open flat below quarry NE of Olympia Trail. Comment
  UC2028081  Trifolium depauperatum var. truncatum Barbara Ertter, Tony Morosco 1998-4-12 15988 Contra Costa Base of Mount Olympia on north side of Mount Diablo, open flat below quarry NE of Olympia Trail. Comment
  UC2028082  Trifolium bifidum Barbara Ertter, Tony Morosco 1998-4-12 15987 Contra Costa Base of Mount Olympia on north side of Mount Diablo, NE of Olympia Trail. Comment
  UC2028086  Trifolium oliganthum Barbara Ertter, Tony Morosco 1998-4-12 15983 Contra Costa Base of Mount Olympia on north side of Mount Diablo, south side of lower end of Olympia Trail. Comment
  UC2028087  Trifolium oliganthum Barbara Ertter, Tony Morosco 1998-4-12 15984 Contra Costa Base of Mount Olympia on north side of Mount Diablo, south side of lower end of Olympia Trail. Comment
  UC2028088  Plectritis ciliosa Barbara Ertter, Tony Morosco 1998-4-12 15985 Contra Costa Base of Mount Olympia on north side of Mount Diablo, south side of lower end of Olympia Trail. Comment
  UC2028089  Sanicula saxatilis Barbara Ertter, Tony Morosco 1998-4-12 15996 Contra Costa Base of Mount Olympia on north side of Mount Diablo, talus above quarry NE of Olympia Trail. Comment
  UC2028090  Lomatium californicum Barbara Ertter, Tony Morosco 1998-4-12 16000 Contra Costa Base of Mount Olympia on north side of Mount Diablo, NE of Olympia Trail. Comment
  UC2028092  Pluchea odorata Barbara Ertter, Chris Thayer 1996-10-25 15380 Contra Costa West side of Mount Diablo, North Gate Road 3 roadmiles below Junction, roadside drainage near Mineral Spring. Comment
  UC2028094  Solanum americanum Barbara Ertter, Chris Thayer 1996-10-25 15384 Contra Costa West side of Mount Diablo, North Gate Road near ranches. Comment
  UC2028097  Cosmos bipinnatus Barbara Ertter 1996-9-19 15290 Contra Costa Cerrito Creek at base of Albany Hill, just west of San Pablo Avenue. Comment
  UC2028098  Centromadia fitchii Barbara Ertter, Chris Thayer 1996-10-25 15375 Contra Costa West side of Mount Diablo, North Gate Road 0.8 road miles NW of Burma Road, spring area with abundant Distichlis, on tributary of Little Pine Creek. Comment
  UC2028100  Lactuca saligna Barbara Ertter, Chris Thayer 1996-10-25 15372 Contra Costa West side of Mount Diablo, North Gate Road 1 road mile NW of Burma Road, at west end of Long Ridge. Comment
  UC2028102  Sanicula bipinnatifida Barbara Ertter with Tony Morosco 1998-4-12 15981 Contra Costa Base of Mount Olympia on north side of Mount Diablo. Comment
  UC2028104  Stachys ajugoides var. rigida Barbara Ertter with Christopher Baysdorfer 1998-5-10 16123 Contra Costa West side Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028105  Centranthus ruber Barbara Ertter with Christopher Baysdorfer 1998-5-10 16119 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028106  Penstemon centranthifolius Barbara Ertter with Christopher Baysdorfer 1998-5-10 16118 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028107  Cotoneaster pannosus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16117 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028108  Pyracantha fortuneana Barbara Ertter with Christopher Baysdorfer 1998-5-10 16115 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028111  Cotula australis Barbara Ertter with Christopher Baysdorfer 1998-5-10 16111 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, of Ohlone Trail. Comment
  UC2028112  Eucrypta chrysanthemifolia var. chrysanthemifolia Barbara Ertter with Christopher Baysdorfer 1998-5-10 16110 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, along Ohlone Trail. Comment
  UC2028113  Hypochaeris glabra Barbara Ertter with Christopher Baysdorfer 1998-5-10 16108 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, roadside not far from Valley Vista trailhead. Comment
  UC2028114  Trifolium campestre Barbara Ertter with Richard K. Brummitt 1998-5-6 16095 Contra Costa Donner Canyon Trail near Regency Drive trailhead, north base of Mount Diablo. Comment
  UC2028115  Allium unifolium Barbara Ertter with Richard K. Brummitt 1998-5-6 16094 Contra Costa Lower Donner Canyon on north base of Mount Diablo, Hetherington Trail upstream from Donner Cabin. Comment
  UC2028116  Lupinus nanus Barbara Ertter with Richard K. Brummitt 1998-5-6 16093 Contra Costa :ower Donner Canyon on north base of Mount Diablo, Hetherington Trail upstream from Donner Cabin. Comment
  UC2028117  Trifolium bifidum var. bifidum Barbara Ertter with Richard K. Brummitt 1998-5-6 16092 Contra Costa Lower Donner Canyon on north base of Mount Diablo, Hetherington Trail upstream from Donner Cabin. Comment
  UC2028118  Agoseris heterophylla Barbara Ertter with Richard K. Brummitt 1998-5-6 16091 Contra Costa Lower Donner Canyon on north base of Mount Diablo, Hetherington Trail upstream from Donner Cabin. Comment
  UC2028119  Ranunculus canus Barbara Ertter with Richard K. Brummitt 1998-5-6 16090 Contra Costa Lower Donner Canyon on north base of Mount Diablo, Hetherington Trail upstream from Donner. Comment
  UC2028120  Lupinus nanus Barbara Ertter with Richard K. Brummitt 1998-5-6 16089 Contra Costa Lower Donner Canyon Road on north base of Mount Diablo, ca 1/2 miles south of Donner cabin site. Comment
  UC2028121  Sanicula crassicaulis Barbara Ertter with Richard K. Brummitt 1998-5-6 16087 Contra Costa Lower Donner Canyon Road on north base of Mount Diablo, ca 1/2 miles south of Donner cabin site. Comment
  UC2028123  Agoseris grandiflora Barbara Ertter with Richard K. Brummitt 1998-5-6 16085 Contra Costa Lower Donner Canyon on north base of Mount Diablo, near Donner Cabin site. Comment
  UC2028125  Soliva sessilis Barbara Ertter with Richard K. Brummitt 1998-5-6 16082 Contra Costa Lower Donner Canyon on north base of Mount Diablo,near Donner Cabin site. Comment
  UC2028128  Soliva sessilis Barbara Ertter with Richard K. Brummitt 1998-5-6 16080 Contra Costa Base of Mitchell Rock Trail on north base of Mount Diablo. Comment
  UC2028129  Malacothamnus fasciculatus Barbara Ertter 1998-5-3 16079 a Contra Costa Wall Point Road and Emmons Canyon Road, southwest flank of Mount Diablo. Comment
  UC2028130  Plagiobothrys canescens Barbara Ertter 1998-5-3 16079 Contra Costa Wall Point Road and Emmons Canyon Road, southwest flank of Mount Diablo. Comment
  UC2028140  Vicia americana subsp. americana Barbara Ertter 1998-4-4 15975 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, south of Bramhill Pond. Comment
  UC2028141  Prunus dulcis Barbara Ertter 1998-4-4 15974 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Quarry Hill. Comment
  UC2028142  Crassula tillaea Barbara Ertter 1998-4-4 15973 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Quarry Hill. Comment
  UC2028143  Penstemon heterophyllus var. purdyi Barbara Ertter 1998-4-4 15972 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Quarry Hill. Comment
  UC2028144  Festuca microstachys Barbara Ertter 1998-4-4 15971 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Fossil Hill. Comment
  UC2028145  Triteleia laxa Barbara Ertter 1998-4-4 15970 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Fossil Hill. Comment
  UC2028146  Ranunculus hebecarpus Barbara Ertter 1998-4-4 15968 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, and Indian Valley School. Comment
  UC2028147  Packera breweri Barbara Ertter 1998-4-4 15966 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, and Indian Valley School. Comment
  UC2028148  Lomatium macrocarpum Barbara Ertter 1998-4-4 15965 Contra Costa Shell Ridge Open Space northwest of Mount Diablo and Indian Valley School. Comment
  UC2028149  Chenopodium californicum Barbara Ertter 1998-4-4 15964 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, and Indian Valley School. Comment
  UC2028150  Castilleja foliolosa Barbara Ertter 1998-4-4 15963 Contra Costa Shell Ridge Open Space northwest of Mount Diablo and Indian Valley School. Comment
  UC2028151  Vicia sativa subsp. sativa Barbara Ertter 1998-4-4 15961 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  UC2028152  Sinapis arvensis Barbara Ertter 1998-4-4 15959 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  UC2028153  Stellaria pallida Barbara Ertter 1998-4-4 15958 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  UC2028154  Trifolium depauperatum var. truncatum Barbara Ertter 1998-4-4 15957 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  UC2028155  Castilleja exserta subsp. exserta Barbara Ertter 1998-4-4 15956 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  UC2028156  Gilia clivorum Barbara Ertter 1998-4-4 15955 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  UC2028157  Trifolium willdenovii Barbara Ertter 1998-4-4 15954 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  UC2028159  Ranunculus canus Barbara Ertter 1998-4-4 15952 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, south of Indian Valley School. Comment
  UC2028160  Sagina apetala Barbara Ertter 1998-4-4 15948 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, SE of Indian Valley School. Comment
  UC2028161  Cerastium glomeratum Barbara Ertter 1998-4-4 15947 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, SE of Indian Valley School. Comment
  UC2028165  Juncus bufonius var. bufonius Barbara Ertter 1998-5-3 16078 a Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  UC2028168  Lupinus pachylobus Barbara Ertter 1998-5-3 16075 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  UC2028169  Trifolium albopurpureum var. albopurpureum Barbara Ertter 1998-5-3 16074 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  UC2028170  Trifolium gracilentum var. gracilentum Barbara Ertter 1998-5-3 16073 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  UC2028171  Calystegia subacaulis subsp. subacaulis Barbara Ertter 1998-5-3 16069 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, between Wall Point and Secret Trail junction. Comment
  UC2028172  Lupinus microcarpus var. microcarpus Barbara Ertter 1998-5-3 16050 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC2028174  Clarkia affinis Barbara Ertter 1998-5-3 16048 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC2028175  Sonchus asper subsp. asper Barbara Ertter 1998-5-3 16044 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo. Comment
  UC2028176  Raphanus raphanistrum Barbara Ertter 1998-5-3 16043 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo. Comment
  UC2028177  Taraxacum laevigatum Barbara Ertter 1998-5-3 16042 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo. Comment
  UC2028178  Lithophragma heterophyllum Barbara Ertter 1998-5-3 16041 a Contra Costa Dusty Road at north end of Wall Point Ridge, southwest flank of Mount Diablo. Comment
  UC2028180  Lithophragma bolanderi Barbara Ertter 1998-5-3 16038 Contra Costa SW fork of Pine Creek between Pine Ridge and Wall Point Ridge, southwest base of Mount Diablo. Comment
  UC2028181  Sagina decumbens subsp. occidentalis Barbara Ertter 1998-5-3 16037 Contra Costa Above SW fork of Pine Creek at southwest base of Mount Diablo. Comment
  UC2028183  Castilleja affinis subsp. affinis Barbara Ertter 1998-5-3 16068 Contra Costa SE end of Wall Point Road on southwest flank of Mount Diablo. Comment
  UC2028185  Crassula aquatica Barbara Ertter 1998-5-3 16059 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC2028188  Rorippa curvisiliqua Barbara Ertter 1998-5-3 16055 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC2028189  Carduus tenuiflorus Barbara Ertter 1998-5-3 16054 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC2028190  Trifolium depauperatum var. amplectens Barbara Ertter 1998-5-3 16053 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC2028191  Quercus berberidifolia Barbara Ertter with Ann Dennis 1998-1-25 15908 Contra Costa Donner Canyon on north side Mount Diablo, Middle Trail/Falls Trail. Comment
  UC2028192  Quercus berberidifolia Barbara Ertter with Ann Dennis 1998-1-25 15908 a Contra Costa Donner Canyon on north side Mount Diablo, Middle Trail/Falls Trail. Comment
  UC2028193  Quercus X chasei Barbara Ertter 1997-11-1 15879 Contra Costa South side Mount Diablo, near Balancing Rock on Knobcone Point Road. Comment
  UC2028195  Amaranthus albus Barbara Ertter 1997-8-18 15768 Contra Costa Disturbed area adjacent to Antioch Dunes NWR east of Antioch. Comment
  UC2028201  Vicia sativa subsp. sativa Barbara Ertter 1998-5-3 16051 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC2028208  Stebbinsoseris heterocarpa Barbara Ertter 1998-5-3 16076 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  UC2028209  Trifolium bifidum var. decipiens Barbara Ertter 1998-5-3 16072 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  UC2028210  Claytonia parviflora subsp. parviflora Barbara Ertter, Tony Morosco 1998-4-12 15999 Contra Costa Base of Mount Olympia on north side of Mount Diablo, talus above quarry NE of Olympia Trail. Comment
  UC2028212  Raphanus raphanistrum Barbara Ertter with Richard K. Brummitt 1998-5-13 16134 Contra Costa North Gate Road on west side of Mount Diablo, hairpin turn opposite Angel Kerley trailhead. Comment
  UC2028214  Lupinus nanus Barbara Ertter with Richard K. Brummitt 1998-5-13 16132 Contra Costa Summit Road on Mount Diablo, base of rock outcrop/roadcut above Juniper Camp. Comment
  UC2028215  Trifolium albopurpureum var. dichotomum Barbara Ertter with Richard K. Brummitt 1998-5-13 16131 Contra Costa Summit Road on Mount Diablo, base of rock outcrop/roadcut above Juniper Camp. Comment
  UC2028216  Carduus tenuiflorus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16130 Contra Costa West-center Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028217  Carduus pycnocephalus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16129 Contra Costa West-center Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028218  Calochortus argillosus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16128 Contra Costa West-center Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028220  Ptelea crenulata Barbara Ertter with Christopher Baysdorfer 1998-5-10 16126 Contra Costa West side Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028221  Calochortus pulchellus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16125 Contra Costa West side Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028226  Navarretia mellita Barbara Ertter 1998-12-6 16472 Contra Costa Southwest side of Mount Diablo, Wall Point Road just north of Rock City. Comment
  UC2028227  Rosa spithamea Barbara Ertter 1998-12-6 16470 Contra Costa Rock City area on southwest side Mount Diablo. Comment
  UC2028229  Nerium oleander Barbara Ertter 1998-11-15 16467 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  UC2028230  Ailanthus altissima Barbara Ertter 1998-11-15 16466 Contra Costa North side Mount Olympia on north side Mount Diablo Comment
  UC2028231  Ulmus minor Barbara Ertter 1998-11-15 16465 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  UC2028232  Eriogonum gracile Barbara Ertter 1998-11-15 16464 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  UC2028233  Baccharis glutinosa Barbara Ertter 1998-11-15 16463 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  UC2028234  Juncus bufonius var. bufonius Barbara Ertter, Tony Morosco 1998-9-18 16440 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028235  Carex globosa Barbara Ertter, Tony Morosco 1998-9-18 16439 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028236  Camissonia contorta Barbara Ertter, Tony Morosco 1998-9-18 16438 Contra Costa North side Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028237  Ulmus pumila Barbara Ertter, Tony Morosco 1998-9-18 16434 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, above sand quarry [subsequently developed] on south side of Ygnacio Valley Road. Comment
  UC2028239  Salix laevigata Barbara Ertter, Tony Morosco 1998-9-18 16428 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028240  Centaurium muehlenbergii Barbara Ertter, Tony Morosco 1998-9-18 16424 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028242  Lythrum tribracteatum Barbara Ertter, Tony Morosco 1998-9-18 16422 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, western quarry area. Comment
  UC2028244  Pistacia atlantica Barbara Ertter, Tony Morosco 1998-9-18 16418 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, western quarry area. Comment
  UC2028245  Malacothamnus fasciculatus Barbara Ertter, Tony Morosco 1998-9-18 16417 Contra Costa West edge Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028246  Centromadia fitchii Barbara Ertter, Tony Morosco 1998-9-18 16416 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, Valley Vista Road entrance. Comment
  UC2028247  Calochortus argillosus Barbara Ertter, Mary Bowerman, Lisa Schultheis 1998-8-21 16404 Contra Costa North Gate Road on northwest flank of Mount Diablo, 1.6 miles south of park entrance kiosk (site of 16153). Comment
  UC2028248  Chamaesyce ocellata subsp. ocellata Barbara Ertter, Mary Bowerman, Lisa Schultheis 1998-8-21 16402 Contra Costa North Gate Road on west side of Mount Diablo, 1 mile below Junction. Comment
  UC2028250  Stephanomeria elata Barbara Ertter, Mary Bowerman, Lisa Schultheis 1998-8-21 16399 Contra Costa South side of Mount Diablo, South Gate Road 0.8 miles below entry kiosk. Comment
  UC2028251  Camissonia intermedia Barbara Ertter, Mary Bowerman, Lisa Schultheis 1998-8-21 16397 Contra Costa South side of Mount Diablo, South Gate Road 1.1 miles below entry kiosk. Comment
  UC2028255  Lupinus bicolor Barbara Ertter with Gary Schoolcraft 1996-4-7 14573 Contra Costa Point San Pablo in west Richmond, crest of road to yacht harbor, coastal grassland along ridge, scraped roadbed to tower Comment
  UC2028259  Stellaria pallida Barbara Ertter 1999-6-12 16721 Contra Costa Knobcone Point Road on south side of Mount Diablo, burned chamissal at head of NE fork of Sycamore Creek. Comment
  UC2028260  Navarretia mellita Barbara Ertter 1999-6-12 16720 Contra Costa Knobcone Point Road on south side of Mount Diablo, burned chamissal at head of NE fork of Sycamore Creek. Comment
  UC2028261  Camissonia hirtella Barbara Ertter 1999-6-12 16719 Contra Costa Knobcone Point Road on south side of Mount Diablo, burned chamissal at head of NE fork of Sycamore Creek. Comment
  UC2028262  Arnica discoidea Barbara Ertter 1999-6-12 16718 Contra Costa Head of West Branch Alamo Creek on south flank of Mount Diablo, spur road to powerline south from Knobcone Point Road at park boundary. Comment
  UC2028263  Cryptantha clevelandii Barbara Ertter 1999-6-12 16717 Contra Costa West Branch Alamo Creek on south flank of Mount Diablo, along unofficial path running from north spur of Black Hawk Ridge Road to south spur off of Knob Cone Point Road (near powerline). Comment
  UC2028264  Juncus bufonius var. bufonius Barbara Ertter 1999-6-12 16716 Contra Costa West Branch Alamo Creek on south flank of Mount Diablo, along unofficial path running from north spur of Black Hawk Ridge Road to south spur off of Knob Cone Point Road (near powerline). Comment
  UC2028265  Heterocodon rariflorum Barbara Ertter 1999-6-12 16715 Contra Costa West Branch Alamo Creek on south flank of Mount Diablo, along unofficial path running from north spur of Black Hawk Ridge Road to south spur off of Knob Cone Point Road (near powerline). Comment
  UC2028266  Centaurium davyi Barbara Ertter 1999-6-12 16714 Contra Costa West Branch Alamo Creek on south flank of Mount Diablo, along unofficial path running from north spur of Black Hawk Ridge Road to south spur off of Knob Cone Point Road (near powerline). Comment
  UC2028267  Linanthus androsaceus Barbara Ertter 1999-6-12 16712 Contra Costa Black Hawk Ridge road on south side of Mount Diablo, just south of confluence of NE and E forks of Sycamore Creek. Comment
  UC2028269  Carex globosa Barbara Ertter 1999-6-12 16708 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  UC2028271  Rumex acetosella Barbara Ertter 1999-6-12 16706 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  UC2028272  Lotus micranthus Barbara Ertter 1999-6-12 16705 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  UC2028273  Galium murale Barbara Ertter 1999-6-12 16703 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  UC2028274  Centaurium davyi Barbara Ertter 1999-6-12 16702 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  UC2028276  Navarretia pubescens Barbara Ertter 1999-6-12 16700 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  UC2028277  Trifolium albopurpureum var. dichotomum Barbara Ertter, Susan D'Alcamo 1999-4-18 16503 Contra Costa Bald Ridge Trail on NW side of Mount Diablo summit. Comment
  UC2028278  Cardamine californica Barbara Ertter 1999-3-21 16490 Contra Costa NW corner of Miller Knox Regional Shoreline, Potrero Hills SW of Richmond; abandoned trail on north side of crest. Comment
  UC2028279  Narcissus pseudonarcissus Barbara Ertter with Laura Fujii 1999-3-7 16485 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, near Alvarado Staging area at NW end of park, along hiking road. Comment
  UC2028280  Cytisus striatus Barbara Ertter with Laura Fujii 1999-3-7 16484 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, near Alvarado Staging area at NW end of park, along hiking road. Comment
  UC2028293  Galium parisiense Barbara Ertter with Dan Norris 1998-6-18 16221 Contra Costa West of Rock City area on south side of Mount Diablo, saddle on W Fossil Ridge Trail. Comment
  UC2028294  Calochortus argillosus Barbara Ertter, Dan Norris 1998-6-18 16219 Contra Costa west of Rock City area on south side of Mount Diablo, saddle on W Fossil Ridge Trail. Comment
  UC2028295  Agoseris grandiflora Barbara Ertter, Dan Norris 1998-6-18 16218 Contra Costa Rock City area on south side of Mount Diablo, W Fossil Ridge Trail. Comment
  UC2028298  Castilleja rubicundula subsp. lithospermoides Barbara Ertter with Dan Norris 1998-6-18 16213 Contra Costa Rock City area on south side of Mount Diablo, trail to Artist Point. Comment
  UC2028299  Galium californicum subsp. californicum Barbara Ertter with Susan D'Alcamo 1998-6-12 16202 Contra Costa Along Curry Canyon Road on south side of Mount Diablo, halfway between Knobcone Point Road and Sheepherder Springs Trail. Comment
  UC2028300  Madia elegans Barbara Ertter, Susan D'Alcamo 1998-6-12 16191 Contra Costa North Peak Trail south of Prospectors Gap on east side of Mount Diablo summit. Comment
  UC2028302  Calystegia malacophylla subsp. pedicellata Barbara Ertter, Susan D'Alcamo 1998-6-12 16189 Contra Costa North Peak Trail south of Prospectors Gap on east side of Mount Diablo summit. Comment
  UC2028304  Juncus bufonius var. bufonius Barbara Ertter, Susan D'Alcamo 1998-6-12 16201 Contra Costa Along Curry Canyon Road just east of Curry Point, south side of Mount Diablo. Comment
  UC2028305  Juncus bufonius var. congestus Barbara Ertter, Susan D'Alcamo 1998-6-12 16200 Contra Costa Along Curry Canyon Road just east of Curry Point, south side of Mount Diablo. Comment
  UC2028306  Calystegia subacaulis subsp. subacaulis Barbara Ertter, Susan D'Alcamo 1998-6-12 16199 Contra Costa Along Curry Canyon Road just east of Curry Point, south side of Mount Diablo. Comment
  UC2028307  Sedum radiatum Barbara Ertter, Susan D'Alcamo 1998-6-12 16196 Contra Costa East end Bald Ridge Trail W of Prospectors Gap on north side of Mount Diablo summit. Comment
  UC2028308  Lithophragma heterophyllum Barbara Ertter, Susan D'Alcamo 1998-6-12 16195 Contra Costa East end Bald Ridge Trail W of Prospectors Gap on north side of Mount Diablo summit. Comment
  UC2028311  Cryptantha decipiens Barbara Ertter, Susan D'Alcamo 1998-6-12 16165 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit. Comment
  UC2028312  Collinsia tinctoria Barbara Ertter, Susan D'Alcamo 1998-6-12 16164 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit. Comment
  UC2028313  Phacelia phacelioides Barbara Ertter, Susan D'Alcamo 1998-6-12 16163 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit. Comment
  UC2028314  Madia gracilis Barbara Ertter, Susan D'Alcamo 1998-6-12 16162 Contra Costa Summit Road to top of Mount Diablo. Comment
  UC2028316  Helianthemum scoparium Barbara Ertter, Susan D'Alcamo 1998-6-12 16161 Contra Costa Summit Road to top of Mount Diablo. Comment
  UC2028317  Raphanus sativus Barbara Ertter, Susan D'Alcamo 1998-6-12 16160 Contra Costa North Gate Road on west flank of Mount Diablo, dogleg in road above ranches opposite Angel Kerley trailhead. Comment
  UC2028318  Clarkia affinis Barbara Ertter, Susan D'Alcamo 1998-6-12 16159 Contra Costa North Gate Road on west flank of Mount Diablo, ca 1/2 mile below upper Turtle Rock Ranch buildings. Comment
  UC2028319  Clarkia purpurea subsp. quadrivulnera Barbara Ertter, Susan D'Alcamo 1998-6-12 16158 Contra Costa North Gate Road on west flank of Mount Diablo, ca 1/2 mile below upper Turtle Rock Ranch buildings. Comment
  UC2028320  Clarkia purpurea subsp. viminea Barbara Ertter, Susan D'Alcamo 1998-6-12 16157 Contra Costa North Gate Road on west flank of Mount Diablo, ca 1/2 mile below upper Turtle Rock Ranch buildings. Comment
  UC2028321  Clarkia affinis Barbara Ertter, Susan D'Alcamo 1998-6-12 16155 Contra Costa North Gate Road on west flank of Mount Diablo near Buckle Point. Comment
  UC2028323  Calochortus argillosus Barbara Ertter, Susan D'Alcamo 1998-6-12 16153 Contra Costa North Gate Road on west flank of Mount Diablo, between Long Ridge and Buckle Point. Comment
  UC2028324  Plagiobothrys trachycarpus Barbara Ertter with Richard K. Brummitt 1998-5-13 16143 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, depression in road from Somersville Road to south leg of Loughler Loop Trail. Comment
  UC2028325  Trifolium incarnatum Barbara Ertter with Richard K. Brummitt 1998-5-13 16142 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, road from Somersville Road to south leg of Loughler Loop Trail. Comment
  UC2028327  Microseris douglasii Barbara Ertter with Richard K. Brummitt 1998-5-13 16138 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, head of SE branch of Loughler Loop Trail. Comment
  UC2028328  Eryngium jepsonii Barbara Ertter with Richard K. Brummitt 1998-5-13 16136 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, head of SE branch of Loughler Loop Trail. Comment
  UC2028329  Delphinium hesperium subsp. hesperium Barbara Ertter with Richard K. Brummitt 1998-5-13 16137 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, head of SE branch of Loughler Loop Trail. Comment
  UC2028348  Calochortus luteus Barbara Ertter with Susan D'Alcamo 1998-6-12 16197 Contra Costa Along Curry Canyon Road just east of Curry Point, south side of Mount Diablo Comment
  UC2028349  Cypselea humifusa Barbara Ertter 2005-8-18 18635 a Contra Costa Mudflats on SE side of San Pablo Reservoir in East BAy Hills, east of San Pablo Dam Road between San Pablo and Orinda, access between HQ and boat launching area [reservoir way down this year while being drained for seismic work on dam] Comment
  UC2028356  Caesalpinia gilliesii Barbara Ertter with Tony Morosco 1998-7-11 16374 Contra Costa Along Willow Avenue near SW corner of Antioch National Wildlife Refuge Comment
  UC2028357  Verbena litoralis Barbara Ertter with Tony Morosco 1998-7-11 16372 Contra Costa Antioch Marina, in riverside tidal marsh Comment
  UC2028359  Piperia michaelii Barbara Ertter with Tony Morosco 1998-7-11 16367 Contra Costa North base of Mount Diablo, Coulter Pine Trail just east of Mitchell Rock Trail, N-facing slope Comment
  UC2028360  Artemisia douglasiana Barbara Ertter with Tony Morosco 1998-7-11 16366 Contra Costa North base of Mount Diablo, margin Bruce Lee Road between Mitchell Canyon and Back Creek Comment
  UC2028361  Lythrum hyssopifolia Barbara Ertter with Tony Morosco 1998-7-11 16364 Contra Costa North base of Mount Diablo, margin of small pond on north side of Bruce Lee Road east of Mitchell Canyon staging area Comment
  UC2028362  Malvella leprosa Barbara Ertter with Tony Morosco 1998-7-11 16363 Contra Costa North base of Mount Diablo, near small pond on north side of Bruce Lee Road east of Mitchell Canyon staging area Comment
  UC2028363  Galium parisiense Barbara Ertter 1998-6-20 16261 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Borges Ranch Road at junction to private residences Comment
  UC2028365  Calochortus luteus Barbara Ertter 1998-6-20 16259 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, NE base of Haystack Hill Comment
  UC2028366  Eriophyllum lanatum var. achilleoides Barbara Ertter 1998-6-20 16258 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, south side of Flat Top Comment
  UC2028368  Calochortus argillosus Barbara Ertter 1998-6-20 16249 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Gypsy Ridge SW of Old Borges Ranch Comment
  UC2028369  Brodiaea elegans subsp. elegans Barbara Ertter 1998-6-20 16248 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Gypsy Ridge SW of Old Borges Ranch Comment
  UC2028370  Amaranthus albus Barbara Ertter 1998-6-20 16247 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Briones-Mount Diablo Trail SW of Old Borges Ranch Comment
  UC2028374  Carex globosa Barbara Ertter with Dan Norris 1998-6-18 16230 Contra Costa Black Hawk Ridge Road below Knobcone Point Road, south side of Mount Diablo Comment
  UC2028375  Agrostis hallii Barbara Ertter with Dan Norris 1998-6-18 16229 Contra Costa Black Hawk Ridge Road below Knobcone Point Road, south side of Mount Diablo Comment
  UC2028388  Ranunculus aquatilis var. diffusus Barbara Ertter with Tony Morosco 1998-7-11 16365 Contra Costa North base of Mount Diablo, small pond on north side of Bruce Lee Road east of Mitchell Canyon staging area Comment
  UC2028389  Triglochin striata Barbara Ertter with Tony Morosco 1998-7-11 16373 Contra Costa Antioch Marina, in riverside trail marsh Comment
  UC2028390  Alisma lanceolatum Barbara Ertter with Tony Morosco 1998-7-11 16375 Contra Costa Antioch Regional Shoreline under south end of Antioch Bridge, edge of water on riprap Comment
  UC2028392  Agrostis pallens Barbara Ertter with Tony Morosco 1998-9-18 16433 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, above sand quarry [subsequently developed] on south side of Ygnacio Valley Road, SE slope below water tank Comment
  UC2028393  Cirsium cymosum Barbara Ertter with Richard K. Brummitt 1998-5-13 16135 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, west side of ridge in Lougher Loop Trail, S-facing grassy slope Comment
  UC2028394  Balsamorhiza deltoidea Barbara Ertter with Richard K. Brummitt 1998-5-13 16139 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, south leg of Loughler Loop Trail just west of pass over central ridge, NW-facing slope Comment
  UC2028395  Elymus elymoides var. elymoides Barbara Ertter with Richard K. Brummitt 1998-5-13 16141 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, south leg of Loughler Loop Trail just west of pass over central ridge, NW-facing slope Comment
  UC2028396  Festuca elmeri Barbara Ertter with Susan D'Alcamo 1998-6-12 16192 Contra Costa North Peak Trail south of Prospectors Gap on east side of Mount Diablo summit, NE-facing slope Comment
  UC2028397  Stipa pulchra Barbara Ertter with Dan Norris 1998-6-18 16211 Contra Costa South Gate Road on south flank of Mount Diablo, ca. 1 mile in from park boundary, gentle S-facing grassy slope Comment
  UC2028399  Agrostis hallii Barbara Ertter with Dan Norris 1998-6-18 16217 Contra Costa Rock City area on south side of Mount Diablo, W Fossil Ridge Trail Comment
  UC2028400  Brachypodium distachyon Barbara Ertter with Dan Norris 1998-6-18 16222 Contra Costa Devil's Slide trail from Knobcone Point Road, south side of Mount Diablo Comment
  UC2028401  Luzula comosa Barbara Ertter with Dan Norris 1998-6-18 16225 Contra Costa Lower Devil's Slide trail falong W Fork Sycamore Creek (Madrone Canyon), south side of Mount Diablo, along path in woods Comment
  UC2028405  Tragopogon porrifolius Barbara Ertter with Richard K. Brummitt 1998-5-16 16083 Contra Costa Lower Donner Canyon on north base of Mount Diablo, near Donner Cabin site Comment
  UC2028407  Oenanthe sarmentosa Barbara Ertter with Richard K. Brummitt 1998-5-16 16098 Contra Costa Antioch Marina, edge of brackish marsh Comment
  UC2028409  Festuca microstachys Barbara Ertter with Richard K. Brummitt 1998-5-16 16088 Contra Costa Lower Donner Canyon on north base of Mount Diablo, ca. 1/2 miles south of Donner cabin site Comment
  UC2028410  Bromus carinatus var. carinatus Barbara Ertter 1998-4-4 15969 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Fossil Hill, middlle of NE-facing slope Comment
  UC2028411  Poa secunda subsp. secunda Barbara Ertter 1998-4-4 15967 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, east side of rocky knoll between northwestern most ridge and Indian Valley School Comment
  UC2028412  Carex multicostata Barbara Ertter with Alan Whittemore, Joanne Kerbavaz, et al. 2001-5-22 17648 Contra Costa South side Mount Diablo, flat at confluence of West (Madrone) and East forks of Sycamore Creek Comment
  UC2028413  Carex praegracilis Barbara Ertter 2001-5-10 17638 Contra Costa South side Mount Diablo, Suphur Spring tributary of west fork Sycamore Creek, ca. 1/4 mile from Madrone Canyon Trail Comment
  UC2028415  Carex globosa Barbara Ertter with Alan Whittemore, Joanne Kerbavaz, et al. 2001-5-22 17650 Contra Costa South side Mount Diablo, headwaters of West Branch Alamo Creek ESE of Knobcone Point, below powerline at end of Knobcone Point Road Comment
  UC2028418  Bromus sterilis Barbara Ertter 2001-5-10 17637 Contra Costa Mount Diablo, Juniper Trail above Laurel Dell Comment
  UC2028419  Wyethia helenioides Barbara Ertter 2001-3-18 17565 Contra Costa Shell Ridge Open Space SW of Walnut Creek, Briones-Mount Diablo Trail on NW extension of ridge Comment
  UC2028421  Stuckenia pectinata Barbara Ertter 2000-9-30 17533 Contra Costa West side Mount Diablo, pond on China Wall Road ca 1/2 mile NW of Macedo Ranch Comment
  UC2028443  Distichlis spicata Barbara Ertter with Chris Thayer 1996-10-25 15368 Contra Costa Northwest flank of Mount Diablo, Northgate east end Northgate Trail from North Gate Road to Diablo Foothills Regional Park Comment
  UC2028448  Typha angustifolia Barbara Ertter with Chris Thayer 1996-10-25 15386 Contra Costa West side of Mount Diablo, North Gate Road 0.4 road miles below junction, Jill Creek Comment
  UC2028449  Cyperus niger Barbara Ertter with Chris Thayer 1996-10-25 15387 Contra Costa West side of Mount Diablo, South Gate Road just south of junction at Mountain House Creek crossing Comment
  UC2028450  Carex serratodens Barbara Ertter with Chris Thayer 1996-10-25 15388 Contra Costa West side of Mount Diablo, South Gate Road just south of junction at Mountain House Creek crossing Comment
  UC2028455  Ailanthus altissima Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17508 Contra Costa North side Mount Olympia in Mount Diablo State Park, bulldozed site of former occupation at Zippe Spring Comment
  UC2028456  Tamarix parviflora Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17511 Contra Costa North side Mount Olympia in Mount Diablo State Park, bulldozed site of former occupation at Zippe Spring Comment
  UC2028457  Aralia californica Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17513 Contra Costa North side of Mount Diablo, Big Spring below Prospectors Gap Road at head of Donner Canyon Comment
  UC2028458  Juncus effusus var. pacificus Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17514 Contra Costa South side Mount Diablo, Green Ranch Road at Meridian Springs Creek crossing Comment
  UC2028461  Juncus xiphioides Barbara Ertter with Chris Thayer 1996-10-25 15389 Contra Costa West side of Mount Diablo, South Gate Road just south of junction at Mountain House Creek crossing Comment
  UC2028462  Cyperus eragrostis Barbara Ertter with Chris Thayer 1996-10-25 15392 Contra Costa Southwest flank of Mount Diablo, lowers South Gate Road just inside park boundary Comment
  UC2028464  Stenotaphrum secundatum Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15669 Contra Costa Martinez Regional Shoreline, south edge of Carquinez Strait Comment
  UC2028470  Deschampsia danthonioides Barbara Ertter with Joanne Kerbavaz 2000-8-20 17498 Contra Costa South side Mount Diablo, smaller pool downstream from Chase Pond Comment
  UC2028471  Datura wrightii Barbara Ertter 1997-8-18 15767 Contra Costa Adjacent to Antioch Dunes NWR east of Antioch, sand Comment
  UC2028473  Festuca idahoensis Barbara Ertter with Richard K. Brummitt 1998-5-6 16099 Contra Costa Western Drive on Point San Pablo/Point Molate west of Richmond, base of roadcut south of Naval Fuel Depot Comment
  UC2028474  Deschampsia cespitosa subsp. holciformis Barbara Ertter with Richard K. Brummitt 1998-5-6 16097 Contra Costa Antioch Marina, edge of brackish marsh Comment
  UC2028475  Elymus X hansenii Barbara Ertter with Richard K. Brummitt 1998-5-6 16100 Contra Costa Point San Pablo west of Richmond, crest of road to yacht harbor Comment
  UC2028476  Aira caryophyllea var. caryophyllea Barbara Ertter with Richard K. Brummitt 1998-5-6 16105 Contra Costa Point San Pablo west of Richmond, crest of road to yacht harbor Comment
  UC2028477  Stipa lepida Barbara Ertter with Richard K. Brummitt 1998-5-6 16104 Contra Costa Point San Pablo west of Richmond, crest of road to yacht harbor Comment
  UC2028479  Elymus glaucus Barbara Ertter with Richard K. Brummitt 1998-5-6 16101 Contra Costa Point San Pablo west of Richmond, crest of road to yacht harbor Comment
  UC2028481  Stuckenia pectinata Barbara Ertter with Chris Thayer 1996-10-25 15371 a Contra Costa Northwest flank of Mount Diablo, Tick Pond at arc of Falcon Road between North Gate Road and Castle Rock Comment
  UC2028482  Stuckenia pectinata Barbara Ertter with Chris Thayer 1996-10-25 15371 Contra Costa Northwest flank of Mount Diablo, Tick Pond at arc of Falcon Road between North Gate Road and Castle Rock Comment
  UC2028483  Luzula comosa Barbara Ertter 1998-5-3 16040 Contra Costa SW fork of Pine Creek between Pine Ridge and Wall Point Ridge, southwest base of Mount Diablo Comment
  UC2028484  Festuca microstachys Barbara Ertter 1998-5-3 16041 Contra Costa Dusty Road at north end of Wall Point Ridge, southwest flank of Mount Diablo Comment
  UC2028486  Plantago lanceolata Barbara Ertter 1998-5-3 16046 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo Comment
  UC2028487  Festuca arundinacea Barbara Ertter 1998-5-3 16047 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo Comment
  UC2028488  Ranunculus aquatilis var. diffusus Barbara Ertter 1998-5-3 16057 Contra Costa Turtle Rock ponds along Barbeque Terrace Road in upper Pine Canyon, southwest flank of Mount Diablo Comment
  UC2028489  Triteleia hyacinthina Barbara Ertter 1998-5-3 16060 Contra Costa Area of Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo Comment
  UC2028490  Eleocharis macrostachya Barbara Ertter 1998-5-3 16062 Contra Costa Area of Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo Comment
  UC2028492  Bromus diandrus Barbara Ertter 1998-5-3 16067 a Contra Costa SE end of Wall Point Road on southwest flank of Mount Diablo Comment
  UC2028494  Briza maxima Barbara Ertter 1998-5-3 16071 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, between Wall Point and Secret Trail junction Comment
  UC2028495  Kniphofia uvaria Barbara Ertter 1999-3-21 16487 Contra Costa Miller Knox Regional Shoreline, Protero Hills SW of Richmond, SE edge of eucalyptus grove S of northern water tank Comment
  UC2028496  Eucalyptus sideroxylon Barbara Ertter 1999-3-21 16488 Contra Costa NW corner of Miller Knox Regional Shoreline, Protero Hills SW of Richmond Comment
  UC2028497  Deschampsia elongata Barbara Ertter 1999-6-12 16710 Contra Costa Black Hawk Ridge road on south side of Mount Diablo, road crossing at confluence of NE and E forks of Sycamore Creek Comment
  UC2028498  Agrostis exarata Barbara Ertter 1999-6-12 16711 Contra Costa Black Hawk Ridge road on south side of Mount Diablo, road crossing at confluence of NE and E forks of Sycamore Creek Comment
  UC2028500  Carex subbracteata Barbara Ertter 1999-3-21 16491 Contra Costa NW corner of Miller Knox Regional Shoreline, Protero Hills SW of Richmond Comment
  UC2028502  Panicum capillare Barbara Ertter with Mary Bowerman, Lisa Schultheis 1998-8-21 16396 Contra Costa South side of Mount Diablo, South Gate Road 1.1 miles below entry kiosky Comment
  UC2028504  Echinochloa colona Barbara Ertter with Mary Bowerman, Lisa Schultheis 1998-8-21 16403 Contra Costa North Gate Road on west side of Mount Diablo, 0.7 miles below Diablo Ranch Comment
  UC2028505  Perideridia oregana Barbara Ertter with Mary Bowerman, Lisa Schultheis 1998-8-21 16405 Contra Costa North side Shell Ridge Open Space west of Mount Diablo, near pond at Wiget Lane entrance Comment
  UC2028506  Centromadia pungens subsp. pungens Barbara Ertter with Mary Bowerman, Lisa Schultheis 1998-8-21 16406 Contra Costa North side Shell Ridge Open Space west of Mount Diablo, near pond at Wiget Lane entrance Comment
  UC2028508  Agrostis avenacea Barbara Ertter with Tony Morosco 1998-9-18 16425 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, north quarry area [subsequently developed] Comment
  UC2028510  Bolboschoenus robustus Barbara Ertter with Tony Morosco 1998-9-18 16432 Contra Costa West slope Lime Ridge Open Space northwest of Mount Diablo, just southeast of Ygnacio Valley Road, southwest of sand quarry Comment
  UC2028511  Pseudognaphalium beneolens Barbara Ertter 1996-11-24 15414 Contra Costa Southwest side of Mount Diablo, Wall Point Road across Pine Ridge ca 1/2 airmiles ENE of Macedo Ranch Comment
  UC2028512  Agrostis hallii Barbara Ertter 1996-11-24 15416 Contra Costa Southwest side of Mount Diablo, Wall Point Road across Pine Ridge ca 1/2 air miles ENE of Macedo Ranch. Comment
  UC2028513  Arceuthobium campylopodum Barbara Ertter 1996-11-24 15417 Contra Costa Southwest side of Mount Diablo, Wall Point Road across Pine Ridge ca 1/2 air miles ENE of Macedo Ranch. Comment
  UC2028514  Spartium junceum Barbara Ertter 1996-11-24 15419 Contra Costa West side of Mount Diablo, upstream from Pine Pond along Stage Road in Pine Canyon, floodplain at junction with Dusty Road Comment
  UC2028515  Setaria pumila Barbara Ertter 1996-11-24 15420 Contra Costa West side of Mount Diablo, upstream from Pine Pond along Stage Road in Pine Canyon, floodplain at junction with Dusty Road Comment
  UC2028516  Echinochloa crus-galli Barbara Ertter 1996-11-24 15421 Contra Costa West side of Mount Diablo, upstream from Pine Pond along Stage Road in Pine Canyon, floodplain at junction with Dusty Road Comment
  UC2028517  Conyza canadensis Barbara Ertter 1996-11-24 15422 Contra Costa West side of Mount Diablo, upstream from Pine Pond along Stage Road in Pine Canyon, floodplain at junction with Dusty Road Comment
  UC2028518  Sonchus oleraceus Barbara Ertter 1996-11-24 15428 Contra Costa West side of Mount Diablo, Pine Pond along Stage Road in Pine Canyon. Comment
  UC2028519  Typha latifolia Barbara Ertter 1996-11-24 15429 Contra Costa West side of Mount Diablo, Pine Pond along Stage Road in Pine Canyon. Comment
  UC2028520  Urtica urens Barbara Ertter 1997-1-5 15438 Contra Costa Lime Ridge Open Space on northwest side of Mount Diablo, section on north side of Ygnacio Valley Road. Comment
  UC2028521  Lactuca virosa Barbara Ertter 1997-9-14 15804 Contra Costa WSW base of Mount Diablo, creek NW of Macedo Ranch between Pine Ridge and lowers Wall Point Road. Comment
  UC2028523  Cortaderia jubata Barbara Ertter 1997-9-14 15814 Contra Costa Southwest side of Mount Diablo, Secret Trail at head of Pine Canyon. Comment
  UC2028528  Urtica urens Barbara Ertter 1998-1-4 15887 Contra Costa South end Diablo Foothills Regional Park southeast of Walnut Creek, Alamo Trail near junction with Hanging Valley Trail. Comment
  UC2028529  Poa annua Barbara Ertter 1998-1-4 15890 Contra Costa South end Diablo Foothills Regional Park southeast of Walnut Creek, Hazzard Pond north of Livorna Staging Area Comment
  UC2028530  Juncus occidentalis Barbara Ertter 1998-1-17 15898 Contra Costa Lime Ridge Open Space at NW foot of Mount Diablo. Comment
  UC2028531  Phalaris paradoxa Barbara Ertter 1998-5-3 16030 Contra Costa Macedo Ranch at southwest base of Mount Diablo. Comment
  UC2028532  Juncus occidentalis Barbara Ertter 1998-5-3 16035 Contra Costa Above SW of fork of Pine Creek at southwest base of Mount Diablo. Comment
  UC2028533  Festuca microstachys Barbara Ertter with Tony Morosco 1998-4-12 15989 Contra Costa Base of Mount Olympia on north side of Mount Diablo. Comment
  UC2028536  Agrostis capillaris Barbara Ertter with Amy Rusev 1998-1-17 15903 Contra Costa Edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry (subsequently developed) on south side of Ygnacio Valley Road. Comment
  UC2028538  Bromus catharticus Barbara Ertter 1998-2-15 15917 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, Edge of Bob Pond and picnic area at Old Borges Ranch. Comment
  UC2028539  Lamium amplexicaule Barbara Ertter 1998-3-1 15920 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, Sulfur Creek upstream from Good's Spring. Comment
  UC2028541  Carex globosa Barbara Ertter 1998-3-7 15927 Contra Costa Southwest side of Mount Diablo, west end Fossil Ridge Trail. Comment
  UC2028542  Carex barbarae Barbara Ertter 1998-3-7 15932 Contra Costa Dan Cook Canyon on southwest side of Mount Diablo. Comment
  UC2028544  Vicia sativa subsp. nigra Barbara Ertter 1998-4-4 15945 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, grasslands SE of Indian Valley School. Comment
  UC2028545  Bromus hordeaceus Barbara Ertter 1998-4-4 15949 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, grasslands along creek south of Indian Valley School. Comment
  UC2028546  Juncus occidentalis Barbara Ertter 1998-4-4 15950 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, grasslands along creek south of Indian Valley School. Comment
  UC2028547  Poa secunda subsp. secunda Barbara Ertter 1998-4-4 15951 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, grasslands along creek south of Indian Valley School. Comment
  UC2028548  Sinapis arvensis Barbara Ertter 1998-4-4 15959 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, west base of northwestern-most ridge. Comment
  UC2028549  Wyethia helenioides Barbara Ertter 1998-4-4 15962 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, northwestern-most ridge. Comment
  UC2028550  Quercus kelloggii Barbara Ertter 1997-9-14 15813 Contra Costa Southwest side of Mount Diablo, Secret Trail at head of Pine Canyon Comment
  UC2028554  Equisetum telmateia subsp. braunii Barbara Ertter 1998-11-15 16462 Contra Costa North side Mount Olympia on north side Mount Diablo Comment
  UC2028555  Cortaderia selloana Barbara Ertter 1998-11-15 16459 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  UC2028560  Amaryllis belladonna Barbara Ertter with Mary Barkworth 2000-9-24 17528 Contra Costa North side Mount Diablo, near former well at Donner Cabin site on Donner Creek. Comment
  UC2028561  Amaryllis belladonna Barbara Ertter with Mary Barkworth 2000-9-24 17528 Contra Costa North side Mount Diablo, near former well at Donner Cabin site on Donner Creek. Comment
  UC2028563  Quercus wislizeni Barbara Ertter with Mary Bowerman 1996-11-1 15406 Contra Costa North base of Mount Diablo, along Donner Creek between trailhead and cabin site. Comment
  UC2028565  Polypogon viridis Barbara Ertter 1997-1-5 15440 Contra Costa Lime Ridge Open Space on northwest side of Mount Diablo, section on north side of Ygnacio Valley Road. Comment
  UC2028574  Bowlesia incana Barbara Ertter with Stu Garrett 1997-3-29 15538 Contra Costa West side Mount Diablo, north end of Mothers Trail. Comment
  UC2028575  Claytonia perfoliata subsp. intermontana Barbara Ertter with Stu Garrett 1997-3-29 15539 Contra Costa West side Mount Diablo, north end of Mothers Trail. Comment
  UC2028576  Marah fabacea Barbara Ertter with Stu Garrett 1997-3-29 15540 Contra Costa West side Mount Diablo, north end of Mothers Trail. Comment
  UC2028577  Sinapis arvensis Barbara Ertter, Holly Forbes 1997-4-20 15548 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2028578  Wyethia glabra Barbara Ertter, Holly Forbes 1997-4-20 15552 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2028580  Ranunculus occidentalis Barbara Ertter with Dan Norris 2001-4-15 17607 Contra Costa Diablo Foothills Regional Park. At east end of Alamo Trail. Comment
  UC2028589  Festuca arundinacea Barbara Ertter with Mary Bowerman 1996-11-1 15399 Contra Costa North base of Mount Diablo, near Donner Canyon trailhead at end of Regency Drive Comment
  UC2028591  Zannichellia palustris Barbara Ertter 2000-9-30 17532 Contra Costa west side Mount Diablo, pond on China Wall Road ca 1/2 mile NW of Macedo Ranch. Comment
  UC2028592  Lemna minuta Barbara Ertter with Dan Norris 2001-4-15 17606 Contra Costa Diablo Foothills Regional Park, Alamo Trail from Livorna Staging Area. Comment
  UC2028593  Medicago arabica Barbara Ertter with Dorothy Frantz 2001-5-10 17642 Contra Costa Pine Canyon on west side of Mount Diablo, junction of Stage Road and Sunset Trail Comment
  UC2028594  Carex globosa Barbara Ertter with Alan Whittemore, Joanne Kerbavaz, et al. 2001-5-22 17647 Contra Costa South side Mount Diablo, flat at confluence of West (Madrone) and East forks of Sycamore Creek. Comment
  UC2028595  Cortaderia selloana Barbara Ertter 1998-11-15 16459 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  UC2028946  Trifolium gracilentum Barbara Ertter 2003-4-9 18142 Contra Costa Shell Ridge Open Space on west base of Mount Diablo, Upper Buck Trail on SW side of Deer Hill. Comment
  UC2028947  Trifolium hybridum Barbara Ertter 2000-7-16 17391 Contra Costa lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2028948  Trifolium depauperatum var. truncatum Barbara Ertter 2003-4-9 18143 Contra Costa Shell Ridge Open Space on west base of Mount Diablo, Upper Buck Trail on SW side of Deer Hill. Comment
  UC2028949  Trifolium fragiferum Barbara Ertter 2000-7-16 17390 Contra Costa lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2028950  Trifolium repens Barbara Ertter 2000-7-16 17389 Contra Costa lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2028951  Trifolium depauperatum var. amplectens Barbara Ertter 2003-3-28 18121 Contra Costa Round Valley Regional Preserve, Fox Trail ca 1/8 mile west of junction with valley trail. Comment
  UC2028952  Cotoneaster pannosus Barbara Ertter 2000-7-16 17388 Contra Costa lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2028953  Trifolium depauperatum var. truncatum Barbara Ertter 2003-3-28 18122 Contra Costa Round Valley Regional Preserve, Fox Trail ca 1/8 mile west of junction with valley trail. Comment
  UC2028954  Euphorbia serpens Barbara Ertter 2000-7-16 17387 Contra Costa Lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2028955  Trifolium oliganthum Barbara Ertter 2003-3-28 18135 Contra Costa Round Valley Regional Preserve, mid Hardy Canyon along High Creek. Comment
  UC2028956  Mentha pulegium Barbara Ertter 2000-7-16 17385 Contra Costa Lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2028957  Trifolium tomentosum Barbara Ertter 2002-5-8 17832 Contra Costa Richmond Field Station. Comment
  UC2028959  Frankenia salina Barbara Ertter 2002-8-24 18022 Contra Costa Dunn Creek south of Mount Diablo Mine property on NE base of Mount Diablo. Comment
  UC2028960  Deinandra lobbii Barbara Ertter with Brad Olson et al. 2000-6-2 17309 Contra Costa Brushy Peak Regional Preserve NE of Livermore, dry edge of alkali flat. Comment
  UC2028961  Hordeum depressum Barbara Ertter with Brad Olson et al. 2000-6-2 17304 Contra Costa Brushy Peak Regional Preserve NE of Livermore, at south base of Brushy Peak. Comment
  UC2028962  Euphorbia peplus Barbara Ertter 2003-2-8 18092 Contra Costa Richmond Field Station (UC-Berkeley), weedy edge of interior open space next to Egret Drive. Comment
  UC2028963  Parapholis incurva Barbara Ertter with Brad Olson et al. 2000-6-2 17306 Contra Costa Brushy Peak Regional Preserve NE of Livermore, at south base of Brushy Peak. Comment
  UC2028965  Cardamine californica Barbara Ertter 2003-2-8 18090 Contra Costa Richmond Field Station (UC-Berkeley). Comment
  UC2028966  Juncus bufonius var. congestus Barbara Ertter with Brad Olson et al. 2000-6-2 17305 Contra Costa Brushy Peak Regional Preserve NE of Livermore, at south base of Brushy Peak. Comment
  UC2028968  Rumex transitorius Barbara Ertter with Brad Olson et al. 2000-6-2 17299 Contra Costa north side Brushy Peak Regional Preserve NE of Livermore. Comment
  UC2028969  Festuca myuros Barbara Ertter 2003-2-8 18092 a Contra Costa Richmond Field Station (UC-Berkeley). Comment
  UC2028972  Epilobium ciliatum subsp. ciliatum Barbara Ertter 2000-7-16 17392 Contra Costa lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2028974  Calochortus argillosus Barbara Ertter with Brad Olson et al. 2000-6-2 17296 Contra Costa north side Brushy Peak Regional Preserve NE of Livermore. Comment
  UC2028975  Delphinium hesperium subsp. hesperium Barbara Ertter with Kevin Hintsa 2000-5-16 17024 Contra Costa Rock City area on SSW side of Mount Diablo, East Fossil Ridge Trail. Comment
  UC2028976  Micropus californicus var. californicus Barbara Ertter with Kevin Hintsa 2000-5-16 17023 Contra Costa Rock City area on SSW side of Mount Diablo, East Fossil Ridge Trail. Comment
  UC2028977  Delphinium variegatum subsp. variegatum Barbara Ertter with Kevin Hintsa 2000-5-16 17022 Contra Costa Rock City area on SSW side of Mount Diablo, East Fossil Ridge Trail. Comment
  UC2028978  Streptanthus glandulosus subsp. glandulosus Barbara Ertter 2000-5-14 17020 Contra Costa Donner Basin on north side of Mount Diablo, switchbacks on Cardinet Oaks Road. Comment
  UC2028980  Apiastrum angustifolium Barbara Ertter 2000-5-14 17018 Contra Costa Donner Basin on north side of Mount Diablo, upper end of Falls Trail near junction of Cardinet Oaks Road. Comment
  UC2028981  Collinsia tinctoria Barbara Ertter 2000-5-14 17017 Contra Costa Donner Basin on north side of Mount Diablo, upper end of Falls Trail near junction of Cardinet Oaks Road. Comment
  UC2028983  Chorizanthe membranacea Barbara Ertter 2000-5-14 17015 Contra Costa Donner Basin on north side of Mount Diablo, Falls Trail north of Wild Oat Canyon. Comment
  UC2028985  Trifolium oliganthum Barbara Ertter 2000-5-14 17010 Contra Costa Donner Canyon on north side of Mount Diablo, SW end of Falls Trail between Middle Trail and Donner Creek crossing. Comment
  UC2028988  Calochortus venustus Barbara Ertter 2000-5-14 17007 Contra Costa Donner Canyon on north side of Mount Diablo, SW end of Falls Trail between Middle Trail and Donner Creek crossing. Comment
  UC2028989  Clarkia concinna subsp. concinna Barbara Ertter 2000-5-14 17005 Contra Costa Donner Canyon on north side of Mount Diablo, serpentinitic sites in general area of junction of Donner Canyon, Cardinet Oaks, and Meridian Ridge roads, edged by Arctostaphylos glauca et al. Comment
  UC2028990  Hesperolinon breweri Barbara Ertter 2000-5-14 17000 Contra Costa Donner Canyon on north side of Mount Diablo, serpentinitic sites in general area of junction of Donner Canyon, Cardinet Oaks, and Meridian Ridge roads, edged by Arctostaphylos glauca et al. Comment
  UC2028991  Madia elegans Barbara Ertter 2000-5-14 17001 Contra Costa Donner Canyon on north side of Mount Diablo, serpentinitic sites in general area of junction of Donner Canyon, Cardinet Oaks, and Meridian Ridge roads, edged by Arctostaphylos glauca et al. Comment
  UC2028992  Leptosiphon androsaceus Barbara Ertter 2000-5-14 17003 Contra Costa Donner Canyon on north side of Mount Diablo, serpentinitic sites in general area of junction of Donner Canyon, Cardinet Oaks, and Meridian Ridge roads, edged by Arctostaphylos glauca et al. Comment
  UC2028993  Trifolium microdon Barbara Ertter 2000-5-14 16997 Contra Costa lower Donner Canyon on north side of Mount Diablo on Hetherington Trail. Comment
  UC2028994  Lepidium nitidum var. nitidum Barbara Ertter 2000-3-30 16922 Contra Costa North side of Mount Diablo, Bruce Lee Road between Back Canyon Trail and Coulter Pine Trail. Comment
  UC2028995  Cardamine oligosperma Barbara Ertter 2000-3-30 16912 Contra Costa North side of Mount Diablo, Deer Flat at head of Mitchell Canyon. Comment
  UC2028996  Acmispon wrangelianus Barbara Ertter 2000-3-30 16913 Contra Costa North side of Mount Diablo, grassy S-facing hillside between Deer Flat Creek and Bald Ridge, off-trail east of Meridian Ridge Road. Comment
  UC2028997  Phacelia divaricata Barbara Ertter 2000-3-30 16914 Contra Costa North side of Mount Diablo, grassy S-facing hillside between Deer Flat Creek and Bald Ridge, off-trail east of Meridian Ridge Road. Comment
  UC2028999  Gilia achilleifolia Barbara Ertter 2000-3-30 16918 Contra Costa North side of Mount Diablo, open rocky area ca halfway down Back Canyon Trail from Murchio Gap. Comment
  UC2029000  Gilia clivorum Barbara Ertter 2000-3-30 16919 Contra Costa North side of Mount Diablo, open rocky area ca halfway down Back Canyon Trail from Murchio Gap. Comment
  UC2029001  Scutellaria tuberosa Barbara Ertter 2000-3-30 16920 Contra Costa North side of Mount Diablo, in chaparral near base of Back Canyon Trail. Comment
  UC2029002  Vicia sativa subsp. sativa Barbara Ertter 2000-5-14 16995 Contra Costa Lower Donner Canyon on north side of Mount Diablo, near Donner Cabin site. Comment
  UC2029003  Clarkia purpurea Barbara Ertter 2000-5-14 16996 Contra Costa Lower Donner Canyon on north side of Mount Diablo, on Hetherington Trail. Comment
  UC2029004  Kickxia elatine Barbara Ertter with Michelle Lee et al. 2002-6-29 17965 Contra Costa Lower Curry Creek on east side of Mount Diablo, private property just above Morgan Territory. Comment
  UC2029009  Blepharizonia plumosa Barbara Ertter, Dan Norris 1999-11-14 16855 Contra Costa Black Diamond Mines Regional Preserve, east end of Ridge Trail above Stewartville Trail. Comment
  UC2029010  Malacothamnus fremontii Barbara Ertter with Dan Norris 1999-11-14 16853 Contra Costa Black Diamond Mines Regional Preserve, chaparral patch below east half of Miners Trail. Comment
  UC2029011  Spergularia rubra Barbara Ertter with Dan Norris 1999-11-14 16852 Contra Costa Black Diamond Mines Regional Preserve, south of parking area for Somersville townsite. Comment
  UC2029013  Bolboschoenus maritimus subsp. paludosus Barbara Ertter, Dan Norris 1999-11-14 16854 a Contra Costa Black Diamond Mines Regional Preserve, Sand Creek on east side Stewartville Trail. Comment
  UC2029014  Holocarpha heermannii Barbara Ertter 1999-8-21 16792 Contra Costa Deer Flat Trail south of Murchio Gap, NW side of Mount Diablo. Comment
  UC2029015  Madia elegans Barbara Ertter 1999-8-21 16791 Contra Costa Deer Flat Creek crossing on road between Deer Flat and Murchio Gap, NW side of Mount Diablo. Comment
  UC2029018  Rubus ursinus Barbara Ertter 1999-7-17 16767 Contra Costa Tilden Regional Park, trail to Jewell Lake paralleling Wildcat Creek, through thick woodland growth. Comment
  UC2029019  Rubus ursinus Barbara Ertter 1999-7-17 16767 Contra Costa Tilden Regional Park, trail to Jewell Lake paralleling Wildcat Creek, through thick woodland growth. Comment
  UC2029021  Trifolium fragiferum Barbara Ertter 1999-7-17 16764 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Wildcat Creek Trail between Rifle Range Road and boundary with Tilden Regional Park. Comment
  UC2029022  Lepidium coronopus Barbara Ertter 1999-7-17 16762 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Rifle Range Road. Comment
  UC2029023  Leucanthemum vulgare Barbara Ertter 1999-7-17 16761 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Rifle Range Road. Comment
  UC2029024  Calystegia subacaulis Barbara Ertter 1999-7-17 16760 Contra Costa El Cerrito, west side of Arlington Ave. in small triangle of land between Moeser Ln. and Terrace Dr., among mowed Avena. Comment
  UC2029026  Deinandra corymbosa Barbara Ertter 2002-6-16 17952 Contra Costa Richmond Field Station (UC-Berkeley). Comment
  UC2029027  Madia gracilis Barbara Ertter 2002-6-16 17951 Contra Costa Richmond Field Station (UC-Berkeley). Comment
  UC2029028  Hemizonia congesta subsp. luzulifolia Barbara Ertter 2002-5-11 17833 Contra Costa southwest base of Mount Diablo, lower Dan Cook Canyon, Summit Trail paralleling park boundary. Comment
  UC2029029  Centromadia fitchii Barbara Ertter 2002-8-24 18019 Contra Costa Dunn Creek south of Mount Diablo Mine property on NE base of Mount Diablo. Comment
  UC2029031  Madia elegans Barbara Ertter 2002-8-24 18041 Contra Costa lower Perkins Canyon on NE base of Mount Diablo. Comment
  UC2029032  Holocarpha obconica Barbara Ertter 2002-11-11 18072 Contra Costa Round Valley Regional Preserve east of Mount Diablo, along Round Valley Creek/Miwok Trail Comment
  UC2029033  Centromadia pungens subsp. pungens Barbara Ertter 2002-11-11 18079 Contra Costa Round Valley Regional Preserve east of Mount Diablo, alkaline spring on Murphy's Meadow Trail at north end of Round Valley. Comment
  UC2029034  Gilia tricolor subsp. tricolor Barbara Ertter 2000-3-30 16911 Contra Costa North side of Mount Diablo, Deer Flat at head of Mitchell Canyon. Comment
  UC2029036  Lithophragma heterophyllum Barbara Ertter 2000-3-30 16906 Contra Costa North side of Mount Diablo, Mitchell Canyon Road west of base of switchbacks. Comment
  UC2029037  Vinca major Barbara Ertter 2000-3-30 16902 Contra Costa North base of Mount Diablo, lower Mitchell Canyon ca 1 miles from trailhead. Comment
  UC2029038  Taraxacum officinale Barbara Ertter 2000-3-30 16901 Contra Costa North base of Mount Diablo, lower Mitchell Canyon ca 1 miles from trailhead, near cottonwoods. Comment
  UC2029039  Cardamine oligosperma Barbara Ertter 2000-3-19 16897 Contra Costa Southwest side of Mount Diablo, Stage Road along Pine Creek, ca 1/2 mile above Pine Pond. Comment
  UC2029040  Crassula tillaea Barbara Ertter 2000-3-30 16900 Contra Costa North base of Mount Diablo, Mitchell Canyon trailhead. Comment
  UC2029041  Lepidium latifolium Barbara Ertter 2000-3-30 16899 Contra Costa Mitchell Canyon trailhead, adjacent to horse staging area in parking lot. Comment
  UC2029043  Plagiobothrys acanthocarpus Barbara Ertter 2000-3-19 16894 Contra Costa Southwest flank of Mount Diablo, east of Pine Ridge, below Wall Point Road. Comment
  UC2029045  Arctostaphylos crustacea subsp. rosei Barbara Ertter with Linda Vorobik 2000-1-9 16888 Contra Costa Las Trampas Regional Wilderness in East Bay Hills west of Danville. Comment
  UC2029047  Oxalis pes-caprae Barbara Ertter with Linda Vorobik 2000-1-9 16891 Contra Costa Las Trampas Regional Wilderness in East Bay Hills west of Danville, edge of woodland behind Eugene O'Neill house. Comment
  UC2029048  Garrya elliptica Barbara Ertter with Linda Vorobik 2000-1-9 16890 Contra Costa Las Trampas Regional Wilderness in East Bay Hills west of Danville. Comment
  UC2029049  Quercus chrysolepis Barbara Ertter with Linda Vorobik 2000-1-9 16892 Contra Costa Las Trampas Regional Wilderness in East Bay Hills west of Danville' Comment
  UC2029050  Ribes malvaceum var. malvaceum Barbara Ertter with Linda Vorobik 2000-1-9 16887 Contra Costa Las Trampas Regional Wilderness in East Bay Hills west of Danville. Comment
  UC2029052  Trifolium oliganthum Barbara Ertter 2000-3-30 16904 Contra Costa North base of Mount Diablo, lower Mitchell Canyon ca 1.5 miles from trailhead. Comment
  UC2029055  Eriogonum nudum var. auriculatum Barbara Ertter with Delia Taylor 2003-6-22 18227 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, ridge south of Arata Overlook Trail NE of park headquarters east of Somerville Road. Comment
  UC2029056  Eriogonum angulosum Barbara Ertter with Delia Taylor 2003-6-22 18226 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, ridge south of Arata Overlook Trail NE of park headquarters east of Somerville Road. Comment
  UC2029057  Hypericum perforatum Barbara Ertter, Steve Matson 2003-5-31 18182 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburgh, Coal Canyon. Comment
  UC2029058  Trifolium bifidum var. bifidum 'Barbara Ertter with Save Mount Diablo outing 2003-5-8 18168 Contra Costa Mangini property on knoll west of Mount Zion, NW corner of Mount Diablo. Comment
  UC2029061  Deinandra lobbii Barbara Ertter with Delia Taylor 2003-6-22 18225 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, ridge south of Arata Overlook Trail NE of park headquarters east of Somerville Road. Comment
  UC2029062  Ericameria arborescens Barbara Ertter 2000-7-29 17449 Contra Costa Donner Canyon Road below upper junction of Hetherington Trail, north side of Mount Diablo Comment
  UC2029063  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum Barbara Ertter 2000-7-29 17447 Contra Costa Donner Basin on north side of Mount Diablo, Cardinet Oaks Road at junction with Falls Trail. Comment
  UC2029064  Trifolium obtusiflorum Barbara Ertter 2000-7-29 17445 Contra Costa Donner Basin on north side of Mount Diablo, Falls Trail at east fork of Donner Creek (between main fork and Wild Oat Canyon), trickle of surface water Comment
  UC2029066  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum Barbara Ertter 2000-7-29 17438 Contra Costa Donner Basin on north side of Mount Diablo, opening on lower end of Middle Trail between Meridian Ridge Road and first stream crossing Comment
  UC2029067  Maianthemum stellatum Barbara Ertter 2000-7-29 17437 Contra Costa Donner Basin on north side of Mount Diablo, Middle Trail below Falls Trail junction, at crossing of W Fork Donner Creek, with Berberis, shaded, surface water. Comment
  UC2029068  Aquilegia eximia Barbara Ertter 2000-7-29 17436 Contra Costa Donner Basin on north side of Mount Diablo, Middle Trail below Falls Trail junction, at crossing of W Fork Donner Creek, with Berberis, shaded, surface water. Comment
  UC2029069  Anemopsis californica Barbara Ertter 2000-7-16 17416 Contra Costa Borges Creek on east side Borges Ranch Road on NW base of Mount Diablo, downstream from fire road junction. Comment
  UC2029070  Raphanus raphanistrum Barbara Ertter 2000-7-16 17414 Contra Costa Little Pine Creek Road on west side of Mount Diablo. Comment
  UC2029071  Lemna valdiviana Barbara Ertter 2000-7-16 17413 Contra Costa Turtle Rock Ponds on east side of Pine Creek, west side of Mount Diablo. Comment
  UC2029072  Lemna gibba Barbara Ertter 2000-7-16 17412 Contra Costa Turtle Rock Ponds on east side of Pine Creek, west side of Mount Diablo. Comment
  UC2029073  Ranunculus sceleratus Barbara Ertter 2000-7-16 17411 Contra Costa Turtle Rock Ponds on east side of Pine Creek, west side of Mount Diablo. Comment
  UC2029074  Horkelia californica var. elata Barbara Ertter 2000-7-16 17408 Contra Costa Pine Creek on WNW base of Mount Diablo. Comment
  UC2029075  Euphorbia peplus Barbara Ertter 2000-7-16 17406 Contra Costa Pine Creek on WNW base of Mount Diablo, willow patch above Pine Pond. Comment
  UC2029076  Lathyrus latifolius Barbara Ertter 2000-7-16 17404 Contra Costa Pine Creek on NW base of Mount Diablo, Stage Road at Pine Pond. Comment
  UC2029077  Rupertia physodes Barbara Ertter 2000-7-16 17403 Contra Costa Lower Pine Creek on NW base of Mount Diablo, between Diablo Foothills Regional Park boundary and Pine Pond. Comment
  UC2029079  Oxalis corniculata Barbara Ertter 2000-7-16 17401 Contra Costa Lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2029081  Eriogonum gracile Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17510 Contra Costa north side Mount Olympia in Mount Diablo State Park, bulldozed site of former occupation at Zippe Spring. Comment
  UC2029082  Stephanomeria virgata subsp. pleurocarpa Barbara Ertter 2000-7-29 17439 Contra Costa Donner Basin on north side of Mount Diablo, opening on lower end of Middle Trail between Meridian Ridge Road and first stream crossing. Comment
  UC2029086  Persicaria maculosa Barbara Ertter 2000-7-16 17396 Contra Costa Lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2029088  Castilleja applegatei subsp. martinii Barbara Ertter 2000-7-29 17446 Contra Costa Donner Basin on north side of Mount Diablo, Falls Trail south of Wild Oat Canyon. Comment
  UC2029094  Rupertia physodes Barbara Ertter 1990-5-19 9000 Contra Costa Lafayette Ridge of Briones Regional Park N of Lafayette; along Mariposa ridge road S of Russell Peak, at edge of oaks and chaparral. Comment
  UC2029104  Cardamine Barbara Ertter 2000-3-30 16921 Contra Costa North side of Mount Diablo, lower end of Back Canyon Trail. Comment
  UC2029105  Calycadenia truncata Barbara Ertter 2000-7-29 17441 Contra Costa Donner Basin on north side of Mount Diablo, ca halfway up Middle Trail. Comment
  UC2029111  Ludwigia peploides subsp. montevidensis Barbara Ertter with Lincoln Constance 1995-6-16 14263 Contra Costa East edge Dow Marsh on west side Antioch Marina, south side San Joaquin River in Delta area, edge of marsh. Comment
  UC2029116  Campanula griffinii Barbara Ertter with D. Gowen, J. Ginochio, M. Park, S. Matson, A. Moore, S. D'Alcamo, J. Greenhouse, K. Kersh and J. Gawthrup 2005-4-8 18570 Contra Costa Long Ridge on west flank of Mt. Diablo, springs and pond on Ginochio property near park boundary. Comment
  UC2029119  Scutellaria tuberosa Barbara Ertter with Dan Norris 2001-4-8 17585 Contra Costa Lime Ridge Open Space east of Walnut Creek. Comment
  UC2029120  Salvia spathacea Barbara Ertter 2000-10-26 17549 Contra Costa west side Mount Diablo, Stage Road in lower Pine Canyon, on top of steep cut on west side of road opposite Castle Rock. Comment
  UC2029133  Layia hieracioides Barbara Ertter with David Gowen, Mike Park, and Victoria Seidman 2004-4-20 18359 Contra Costa Eagle Peak Trail on east side of Twin Peaks, north side of Mount Diablo. Comment
  UC2029135  Centromadia fitchii Barbara Ertter 2004-9-17 18497 Contra Costa Lime Ridge Open Space in Concord, segment southeast of Treat Boulevard, south of Kingwood Drive. Comment
  UC2029138  Trifolium subterraneum Barbara Ertter with Alan Prather 2003-6-7 18203 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, creek alongside west end Stone Corral Trail, south of Highland Ridge Trail junction. Comment
  UC2029139  Plagiobothrys bracteatus Barbara Ertter with Alan Prather 2003-6-7 18199 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, fenced pond in bend of east Highland Ridge Trail, 1/4 miles E of junction Stone Corral Trail. Comment
  UC2029140  Arctostaphylos manzanita subsp. laevigata Barbara Ertter with Alan Prather 2003-6-7 18197 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, oak scrub along Valley View Trail in NE corner of park. Comment
  UC2029141  Clarkia concinna Barbara Ertter with Alan Prather 2003-6-7 18213 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, Coyote Trail. Comment
  UC2029142  Calochortus argillosus Barbara Ertter with Alan Prather 2003-6-7 18193 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, Valley View Trail at NE corner of park. Comment
  UC2029143  Calochortus venustus Barbara Ertter with Alan Prather 2003-6-7 18212 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, Coyote Trail. Comment
  UC2029144  Eriogonum nudum var. auriculatum Barbara Ertter with Delia Taylor 2003-6-22 18229 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, River View Loop Trail along Somersville Road north of park headquarters. Comment
  UC2029145  Datura stramonium Barbara Ertter 1999-8-21 16790 Contra Costa Lower Mitchell Canyon Road on NW base of Mount Diablo. Comment
  UC2029146  Scirpus maritimus Barbara Ertter with Dan Norris 1999-11-14 16854 Contra Costa Black Diamond Mines Regional Preserve, Sand Creek on east side Stewartville Trail, dominated by dense stand of Scirpus americanus. Comment
  UC2029147  Echinochloa crus-galli Barbara Ertter with Dan Norris 1999-11-14 16850 Contra Costa Black Diamond Mines Regional Preserve, south of parking area for Somersville townsite. Comment
  UC2029148  Distichlis spicata Barbara Ertter with Dan Norris 1999-11-14 16851 Contra Costa Black Diamond Mines Regional Preserve, south of parking area for Somersville townsite. Comment
  UC2029149  Eriogonum nudum var. auriculatum Barbara Ertter with Dan Norris 1999-11-14 16856 Contra Costa Black Diamond Mines Regional Preserve, east end Ridge Trail. Comment
  UC2029155  Leymus X multiflorus Barbara Ertter 2000-7-29 17448 Contra Costa lower Donner Canyon just above Donner Cabin site, on north side of Mount Diablo. Comment
  UC2029157  Leymus triticoides Barbara Ertter 2000-7-29 17448 a Contra Costa Lower Donner Canyon just above Donner Cabin site, on north side of Mount Diablo. Comment
  UC2029168  Potamogeton pectinatus Barbara Ertter 2000-7-16 17399 Contra Costa Lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2029172  Panicum dichotomiflorum Barbara Ertter 2000-7-16 17415 Contra Costa Diablo Foothills Regional Park, west end of Northgate Trail behind stables along Little Pine Creek, waste area. Comment
  UC2029174  Lactuca virosa Barbara Ertter 2000-7-29 17443 Contra Costa Donner Basin on north side of Mount Diablo, Falls Trail at east fork of Donner Creek (between main fork and Wild Oat Canyon), trickle of surface water. Comment
  UC2029175  Pinus halepensis Barbara Ertter 2000-7-29 17444 Contra Costa Donner Basin on north side of Mount Diablo, Falls Trail at east fork of Donner Creek (between main fork and Wild Oat Canyon), trickle of surface water. Comment
  UC2029176  Ranunculus aquatilis var. subrigidus Barbara Ertter with Alan Prather 2003-6-7 18190 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, pond NE of main trailhead. Comment
  UC2029177  Lilaea scilloides Barbara Ertter with Alan Prather 2003-6-7 18191 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo. Comment
  UC2029178  Bolboschoenus maritimus subsp. paludosus Barbara Ertter with Alan Prather 2003-6-7 18198 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, fenced pond in bend of east Highland Ridge Trail, 1/4 miles E of junction Stone Corral Trail. Comment
  UC2029181  Equisetum telmateia subsp. braunii Barbara Ertter with Alan Prather 2003-6-7 18202 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, creek alongside west end Stone Corral Trail, south of Highland Ridge Trail junction. Comment
  UC2029183  Equisetum hyemale subsp. affine Barbara Ertter 2000-7-16 17394 Contra Costa lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC2029188  Rafinesquia californica Barbara Ertter 2000-5-14 17014 Contra Costa Donner Basin on north side of Mount Diablo, Falls Trail between Donner Creek and Wild Oat Canyon Comment
  UC2029192  Rumex conglomeratus Barbara Ertter 2000-7-16 17380 Contra Costa Diablo Foothills Regional Park, riparian strip along Pine Creek between Castle Rock Regional Recreation Area Comment
  UC2029193  Iris pseudacorus Barbara Ertter 2000-7-16 17381 Contra Costa Diablo Foothills Regional Park, riparian strip along Pine Creek between Castle Rock Regional Recreation Area Comment
  UC2029194  Conium maculatum Barbara Ertter 2000-7-16 17382 Contra Costa Diablo Foothills Regional Park, riparian strip along Pine