37.90770 38.00770 -121.93340 -121.83340 UC/JEPS: Consortium Search Results
Search Results — 676 specimen records retrieved (676 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
 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
  PASA2309  Achyrachaena mollis Annetta Carter 1929-3-31 Contra Costa near Clayton Comment
  RSA15448  Achyrachaena mollis Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville. Comment
  RSA498006  Adenostoma fasciculatum Robert F. Hoover 1939-04 20470 Contra Costa Head west branch Markley Canyon 305 Comment
  UC1127729  Adenostoma fasciculatum R. W. Lundh 1932-9-9 163 Contra Costa 1/2 mi. s.e. Nortonville; Mt. Diablo Quad. 381 Comment
  GH381790  Aesculus californica W. L. Jepson 1918-6-5 7616 Unknown Donner Canyon, Mt. Diablo 228 Comment
  JEPS40093  Aesculus californica W. L. Jepson 1918-6-5 7616 Contra Costa Donner Canyon; Mt. Diablo 228 Comment
  JEPS99561  Agoseris grandiflora Mary Bowerman 1995-7-2 Contra Costa Mount Diablo, (probably Back Canyon or foot trail to Donner Canyon). Comment
  UC691795  Agoseris heterophylla var. heterophylla Mary L. Bowerman 1934-3-18 2482 Contra Costa west of, (in small open flat on the edge of Donner Canyon) Russelman Park; Donner Canyon 365 Comment
  UCD55783  Aira caryophyllea Beecher Crampton 1956-5-14 3391 Contra Costa 7 miles southwest of Antioch, just east of old Nortonville. Comment
  UC767482  Allium crispum R. F. Hoover 1939-3-29 3944 Contra Costa Kircker Pass Comment
Read comments
Feb 8 2013
  JEPS56390  Allium serra W. L. Jepson 1918-6-3 7581 Contra Costa Donner Canyon Mt. Diablo, Donner Canyon 609 Comment
  UC635249  Allium serra H. L. Mason 1929-3-29 5135 Contra Costa Marsh Creek Road 2 mi e Claton; Marsh Creek Road Comment
  UC767477  Allium serra R. F. Hoover 1938-3-5 2818 Contra Costa mouth of Kirker Creek canyon Kirker Creek canyon Comment
  JEPS56395  Allium unifolium W. L. Jepson 1918-6-3 7588 Contra Costa Donner Canyon Mt. Diablo, Donner Canyon 685 Comment
  UC908964  Allophyllum gilioides subsp. violaceum R. F. Hoover 1939-4-13 4022 Contra Costa head of Markley Canyon (w. branch) Comment
  SBBG6220  Amsinckia intermedia J. M. Tucker 1946-3-24 1386 Contra Costa hills between Nortonville and Somersville Comment
  UC725373  Amsinckia intermedia A. A. Heller 1938-4-9 15016 Contra Costa 3 mi sw of Antioch Comment
  UC762817  Amsinckia tessellata var. gloriosa R. F. Hoover 1935-3-10 317 Contra Costa Kirker Pass Comment
  JEPS25509  Amsinckia tessellata var. tessellata R. F. Hoover 1938-3-25 2894 Contra Costa Markley Canyon Comment
  JEPS68948  Amsinckia tessellata var. tessellata Edward Lee 1935-3-10 1276 Contra Costa w watershed of Kirker Creek (Kirker Pass, Donovan Road); Kirker Pass Comment
  UC161764  Amsinckia tessellata var. tessellata C. M. Belshaw 1936-5-9 2084 Contra Costa 1/2 mi n Nortonville 274 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
  UC692565  Angelica californica Mary L. Bowerman 1931-6-2 915 Contra Costa Mount Diablo, Gregory Ranch Road Mount Diablo; , Gregory Ranch Road 518 Comment
  CAS-BOT-BC102268  Anthemis cotula J. H. Thomas 1953-2-1 2724 Santa Cruz About 1/2 mile inland from Sea Cliff Beach State Park which is between Santa Cruz and Watsonville 60 Comment
  JEPS99545  Anthriscus caucalis Mary Bowerman 1995-7-2 Contra Costa Mount Diablo, probably Back Canyon or foot trail to Donner Canyon. Comment
  JEPS45617  Aphanes occidentalis W. L. Jepson 1931-4-5 15720 Contra Costa Nortonville 396 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
  UC692206  Aquilegia eximia Mary L. Bowerman 1936-9-10 3543 Contra Costa Donner Canyon Mount Diablo 335 Comment
  UC692207  Aquilegia eximia Mary L. Bowerman 1933-6-2 2331 Contra Costa Donner Canyon Mount Diablo Comment
  JEPS60396  Aquilegia formosa V. E. Ferguson Contra Costa Donner Canyon Mt. Diablo Comment
  UC692480  Aralia californica Mary L. Bowerman 1933-6-21 2330 Contra Costa Donner Canyon Mt. Diablo, Donner Canyon 243 Comment
  JEPS40121  Arceuthobium campylopodum Miss Ferguson 1920-1-1 Contra Costa Donner Canyon Mt. Diablo Comment
  RSA139994  Arctostaphylos andersonii var. pallida R. C. Wilson 1935-2-26 105 Contra Costa One mile southwest of Nortonville. 442 Comment
  A350053  Arctostaphylos auriculata A. Eastwood & J. T. Howell 1936-4-19 2130 Unknown Nortonville Comment
  CAS-BOT-BC24108  Arctostaphylos auriculata Alice Eastwood; John Thomas Howell 1936-4-19 2130 Contra Costa Nortonville Comment
  CAS-BOT-BC24109  Arctostaphylos auriculata Alice Eastwood; John Thomas Howell 1936-4-19 2130 Contra Costa Nortonville Comment
  CAS-BOT-BC24111  Arctostaphylos auriculata Walter Knight; Irja Knight 1968-2-19 2276 Contra Costa Sandmine ravine in Somersville Comment
  CAS-BOT-BC24114  Arctostaphylos auriculata Joanne Taylor 1941-7-18 16 Contra Costa Hills by Nortonville, dry rocky slopes in chaparral belt. 213 Comment
  CAS-BOT-BC24119  Arctostaphylos auriculata John Thomas Howell 1931-5-12 6477 Contra Costa Nortonville Comment
  JEPS98842  Arctostaphylos auriculata John S. Bryant 1967-3-19 Contra Costa Nortonville, 1 mi hike from Gianochio Bros. gate, old coal mining area at upper end of canyon Comment
  RSA15419  Arctostaphylos auriculata Alice Eastwood, John Thomas Howell 1936-4-19 2130 Contra Costa Nortonville. Comment
  SBBG21400  Arctostaphylos auriculata V. Haraden 1941-7-18 13 Contra Costa near Nortonville 121 Comment
  UC1200411  Arctostaphylos auriculata Edward Lee 1936-1-12 1714 Contra Costa w-facing slope immediately s Nortonville Comment
  UC1200413  Arctostaphylos auriculata Edward Lee 1936-1-12 1713 Contra Costa w-facing slope immediately s Nortonville Comment
  UCD50260  Arctostaphylos auriculata Edward Lee 1936-1-12 1713 Contra Costa Immediately south of Nortonville. Comment
  UCD50262  Arctostaphylos auriculata Roman Gankin 1968-11-14 1311 Contra Costa Ca. 300 yds. above road at Somersville. Comment
  UCD50263  Arctostaphylos auriculata Roman Gankin 1968-11-14 1310 Contra Costa Ca. 300 yds. above the road at Somersville. Comment
  UCD50264  Arctostaphylos auriculata Roman Gankin 1968-11-14 1309 Contra Costa Ca. 300 yds. above the road at Somersville. Comment
  UCD50265  Arctostaphylos auriculata Roman Gankin 1968-11-14 1308 Contra Costa Ca. 300 yds. above road at Somersville. Comment
  CAS-BOT-BC27181  Arctostaphylos bowermaniae James B. Roof 1977-11-18 1009 Contra Costa Along Black Diamond Trail of the Black Diamond Regional Preserve 243 Comment
  CDA23607  Arctostaphylos glandulosa D. G. Kelch, D. A. Weinstein 2008-4-13 08 .040-B Marin Mt Tamalpais. Matt Davis Trail. Near small picnic area between parking lot and mine entrance. Comment
  UC1120336  Arctostaphylos glandulosa subsp. glandulosa R. C. Wilson 1935-2-26 105 Contra Costa 1 mi sw Nortonville; Mount Diablo Quadrangle Comment
  GH350415  Arctostaphylos glauca W. L. Jepson 1918-6-5 7592 Unknown Donner Canon, Mt. Diablo 243 Comment
  JEPS38706  Arctostaphylos glauca W. L. Jepson 7592 Contra Costa Donner Canyon Mt. Diablo 243 Comment
  UC692498  Arctostaphylos glauca Mary L. Bowerman 1931-11-21 1068 Contra Costa near canyon bottom and Bilharan Mount Diablo, Donner Canyon Comment
  A350570  Arctostaphylos manzanita A. Eastwood & J. T. Howell 1936-4-19 2129 Unknown Nortonville Comment
  SD49824  Arctostaphylos manzanita H. A. Jensen 1938-10-27 457 Contra Costa Mt. Diablo quadrangle, 1 mi. SW from Nortonville 380 Comment
  SJSU14146  Arctostaphylos manzanita M. Vickers 1975-2-6 Contra Costa near Nortonville between Concord & Pittsburg off Kirker Pass Rd 243 Comment
  UCD52165  Arctostaphylos manzanita Edward Lee 1936-1-12 1712 Contra Costa Canyon bottom; immediately south of Nortonville. Comment
  JEPS78231 Image available Arctostaphylos manzanita subsp. laevigata James Roof 1009 Contra Costa along Black Diamond Trail Black Diamond Regional Reserve; Black Diamond Trail, of the Black Diamond Regional Preserve, Contra Costa Co. 121 Comment
  RSA122398  Arctostaphylos manzanita subsp. laevigata R. C. Wilson 1935-2-26 104 Contra Costa 1 mile SW of Nortonville. 396 Comment
  SBBG21345  Arctostaphylos manzanita subsp. laevigata V. Haraden 1941-7-18 10 Contra Costa near Nortonville 121 Comment
  UC1200412  Arctostaphylos manzanita subsp. laevigata Edward Lee 1936-1-12 1712 Contra Costa canyon bottom immediately s Nortonville Comment
  UCD51727  Arctostaphylos manzanita subsp. laevigata R. C. Wilson 1935-2-26 112 Contra Costa 3/4 mile southwest of Somersville. 411 Comment
  CAS-BOT-BC24387  Arctostaphylos manzanita subsp. manzanita Alice Eastwood; John Thomas Howell 1936-4-19 2129 Contra Costa Nortonville. Comment
  CAS-BOT-BC24396  Arctostaphylos manzanita subsp. manzanita Walter Knight; Irja Knight; James B. Roof 1967-4-2 2061 Contra Costa Nortonville. Comment
  UC2028460  Artemisia douglasiana Barbara Ertter 1997-9-7 15794 Contra Costa North side Mount Diablo, Donner Creek crossing at south end of Hetherington Trail Comment
  UC630418  Artemisia douglasiana Paule Guiguet and Annetta Carter 1939-8-13 1451 Contra Costa se of Clayton; Mount Diablo drainage, Donner Creek 137 Comment
  UC697143  Artemisia douglasiana Mary L. Bowerman 1932-9-17 1582 Contra Costa w fork Donner Canyon; Mount Diablo Comment
  UC1123499  Asclepias californica C. M. Belshaw 1936-5-15 2131 Contra Costa 1/2 mi wsw Stewartsville; Mt. Diablo Quadrangle Comment
  UC1128838  Astragalus asymmetricus N. French 1935-7-19 644 Contra Costa 1/2 mi e Nortonville; Mt. Diablo Quad., e of Nortonville 304 Comment
  UC1128839  Astragalus asymmetricus G. T. Nordstrom 1937-10-28 1404 Contra Costa 1.4 mi nne Somersville; Mt. Diablo Quad., nne of Somersville Comment
  UC13345  Astragalus didymocarpus W. H. Brewer 1862-5-19 1115 Contra Costa n (Kirker Pass?) Kirker's Pass; n of Kirker's Pass Comment
  UC13351  Astragalus didymocarpus State Survey 1862-5-19 1115 Contra Costa Kirker Pass Kirker Pass (dry hills) Comment
  CAS-BOT-BC177884  Astragalus didymocarpus var. didymocarpus Robert Hoover 1935-3-10 308 Contra Costa Kirker Pass Comment
  JEPS68949  Astragalus gambelianus Edward Lee 1935-3-10 1278 Contra Costa Kirker Pass, Donovan Rd. (w. watershed of Kirker Creek) Comment
  UC1601680  Atriplex coronata Katharine Brandegee 1907-5-3 Contra Costa between Antioch and Marsh Creek; between Antioch and Marsh Creek Comment
  UC1601683  Atriplex joaquinana Katharine Brandegee 1907-5-3 Contra Costa between Antioch Marsh Creek; between Antioch and Marsh Creek Comment
  CDA37400  Atriplex prostrata D. G. Kelch, Mike Perlmutter 2011-9-23 11 .763 Contra Costa Antioch. Dow Wetlands. Comment
  UCD56170  Avena barbata Beecher Crampton 1956-5-14 3404 Contra Costa Southeast of Mt. Diablo. Headwaters of Marsh Creek. 640 Comment
  CAS-BOT-BC98763  Baccharis douglasii Mary L. Bowerman 1942-10-4 3852 Contra Costa Mount Diablo, Russelman Park road 289 Comment
  UC697204  Baccharis glutinosa Mary L. Bowerman 1942-10-4 3852 Contra Costa Mount Diablo, Russelman Park Road 289 Comment
  CAS-BOT-BC98009  Baccharis pilularis Sally Bianco 1995-11-19 1054 Butte Aptos. San Andreas Rd and Hwy 1 intersection 76 Comment
  CAS-BOT-BC98190  Baccharis salicifolia Mary L. Bowerman 1932-3-23 1134 Contra Costa Mount Diablo - Donner Canyon stream bed. 152 Comment
  UC691860  Baccharis salicifolia subsp. salicifolia Mary L. Bowerman 1932-3-23 1134 Contra Costa Mount Diablo, Donner Canyon 152 Comment
  UC691861  Baccharis salicifolia subsp. salicifolia Mary L. Bowerman 1931-5-2 798 Contra Costa Donner Canyon stream Mount Diablo 152 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
  JEPS102908  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
  JEPS12785  Balsamorhiza deltoidea Rimo Bacigalupi with G. T. Robbins 1955-5-4 4978 Contra Costa along road to Irish Canyon (s of and above Nortonville) 426 Comment
  JEPS12786  Balsamorhiza deltoidea Rimo Bacigalupi with G. T. Robbins 1955-5-4 4978 Contra Costa along road to Irish Canyon (s of and above Nortonville) 426 Comment
  JEPS32259  Balsamorhiza deltoidea R. F. Hoover 1939-4-13 4015 Contra Costa head of Markley Canyon (w branch) Markley Canyon Comment
  OBI16940  Balsamorhiza deltoidea Rimo Bacigalupi 1955-5-4 4978 Contra Costa S of and above Nortonville, along rd to Irish Cyn 427 Comment
  UC584282  Balsamorhiza deltoidea G. L. Stebbins Jr. 1937-5-1 2108 Contra Costa about 1 mi s of, n facing ridge Somersville 365 Comment
  UC761940  Balsamorhiza deltoidea R. F. Hoover 1939-4-13 4015 Contra Costa head of Markley Canyon, (w branch) Markeley Canyon Comment
  UC691249  Barbarea orthoceras Mary L. Bowerman 1933-4-9 1841 Contra Costa Donner Canyon, west fork: By trail. Comment
  JEPS68966  Blennosperma nanum Edward Lee 1935-3-10 1299 Contra Costa Nortonville South watershed of Kirker Creek Comment
  SBBG7808  Blennosperma nanum var. nanum J. M. Tucker 1946-3-24 1382 Contra Costa hills between Nortonville and Somersville Comment
  UC565479  Blennosperma nanum var. nanum H. L. Mason 1929-3-15 5045 Contra Costa just s of Nortonville Comment
  UC1119055  Blepharizonia laxa G. T. Nordstrom 1937-10-28 1403 Contra Costa 1.6 mi nne of Somersville (Mt. Diablo); Mt. Diable 182 Comment
Read comments
Aug 6 2012
  CAS-BOT-BC100340  Blepharizonia plumosa Miss H. A. Walker 1916-8-28 3922 Contra Costa Los Medanos, near Antioch Comment
  CAS-BOT-BC100341  Blepharizonia plumosa Miss H. A. Walker 1916-8-28 3922 Contra Costa Los Medanos, near Antioch Comment
  JEPS107064  Blepharizonia plumosa Barbara Ertter, Brad Olson, Diane 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, open oak woodland (Canyon live oak, blue oak, buckeye) and heavily grazed annual grassland on clay soil base of south facing slope. Comment
  POM118273  Blepharizonia plumosa Harriet Ann Walker 1916-8-28 3922 Contra Costa Los Medanos, near Antioch Comment
Read comments
Dec 16 2012
  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
  UC311580  Blepharizonia plumosa Miss H. A. Walker 1916-8-28 3922 Contra Costa near Antioch (Los Medanos); Los Medanos Comment
  UCD129618  Blepharizonia plumosa Robert E. Preston 2001-10-7 1777 Contra Costa Black Diamond Mines Regional Park, on w side of Stewartsville Trail, 0.75 mi s of Parking lot at Frederickson Lane trailhead. 152 Comment
  UCD77424  Blepharizonia plumosa Robert E. Preston 2001-10-7 1777 Contra Costa Black Diamond Mines Regional Park, on w side of Stewartsville Trail, 0.75 mi s of Parking lot at Frederickson Lane trailhead. 152 Comment
Read comments
Mar 14 2018
  CAS-BOT-BC95309  Bowlesia incana John Thomas Howell 1933-3-29 10901 Contra Costa Nortonville hills Comment
  CAS-BOT-BC95314  Bowlesia incana Joseph Andorfer Ewan 1935-3-10 9135 Contra Costa Donovan Road, Kirker Pass Comment
  JEPS68954  Bowlesia incana Edward Lee 1935-3-10 1285 Contra Costa w Watershed of Kirker Creek (Kirker Pass, Donovan Road); Kirker Pass, Donovan Road Comment
  UC566855  Bowlesia incana H. L. Mason 1928-4-1 4272 Contra Costa Hills n of Mount Diablo (back of Pittsburg) Comment
  UC1126847  Brassica nigra R. W. Lundh 1932-7-13 126 Contra Costa 1 mi e of Chaparral Springs (Mount Diablo Quadrangle); Mount Diablo Quadrangle 457 Comment
  JEPS7645  Brodiaea elegans subsp. elegans W. L. Jepson 1918-6-5 7599 Contra Costa Donner Canyon Mount Diablo, Donner Canyon 457 Comment
  UC1134002  Brodiaea terrestris subsp. terrestris C. M. Belshaw 1936-5-9 2079 Contra Costa 1.5 mi e Mulligan Hill; Mt. Diablo Quad. 152 Comment
  UCD57881  Bromus carinatus Beecher Crampton 1956-5-14 3393 Contra Costa Just east of old Nortonville. 7 miles southwest of Antioch. Comment
  UCD58299  Bromus carinatus Beecher Crampton 1956-5-14 3402 Contra Costa Southeast of Mt. Diablo. Marsh Creek. 640 Comment
  SBBG115848  Bromus carinatus var. marginatus B. Crampton 1956-5-14 3393 Contra Costa ca. 7 mi SW of city of Antioch, just E of old mining town of Nortonville Comment
  UC691227  Bromus diandrus Mary L. Bowerman 1935-5-16 2983 Contra Costa Mount Diablo, Russelman Park, at end of road Russelman Park; Mount Diablo, Russelman Park 381 Comment
  UC692364  Bromus laevipes Mary L. Bowerman 1935-5-16 2993 Contra Costa Mount Diablo, Russelman Park, just s of the n baundary of section 25 (e of gate) Russelman Park; Mount Diablo, Russelman Park Comment
  POM300674  Bromus madritensis Mary L. Bowerman 1935-5-16 2991 Contra Costa Russelmann Park, at end of road Comment
Read comments
Aug 11 2011
  UCD36914  Bromus madritensis Beecher Crampton 1956-5-14 3385 Contra Costa 6.7 miles southwest of city of Antioch, along ridge between old coal mining towns of Somersville and Nortonville. Comment
  UCD36919  Bromus madritensis Beecher Crampton 1956-5-14 3395 Contra Costa 3.7 miles southeast of Clayton, on Marsh Creek Road. Comment
  UCD58961  Bromus madritensis Beecher Crampton 1956-5-14 3401 Contra Costa Southeast of Mt. Diablo. 640 Comment
  UCD59002  Bromus madritensis Beecher Crampton 1956-5-14 3395 Contra Costa Marsh Creek Road. 3.7 miles southeast of Clayton. Comment
  UC691209  Bromus madritensis subsp. madritensis Mary L. Bowerman 1935-5-16 2986 Contra Costa Mount Diablo, Russelman Park Russelman Park; Mount Diablo, Russelman Park 381 Comment
  RSA655138  Bromus marginatus Beecher Crampton 1956-5-14 3393 Contra Costa 7 miles southwest of city of Antioch, just east of old mining town of Nortonville. Comment
  CAS-BOT-BC233993  Calandrinia breweri R. F. Hoover 1939-4-13 4019 Contra Costa Head of Markley Canyon (west branch) Comment
  CAS-BOT-BC233994  Calandrinia breweri R. F. Hoover 1939-4-13 4019 Contra Costa Head of Markley Canyon (west branch) Comment
  JEPS99499  Calandrinia breweri Mary Bowerman 1979-5-2 Contra Costa Comment
  UC765774  Calandrinia breweri R. F. Hoover 1939-4-13 4019 Contra Costa head west branch Markley Canyon Comment
  JEPS68965  Calandrinia ciliata Edward Lee 1935-3-10 1298 Contra Costa Nortonville; (s watershed of Kirker Creek) Comment
  JEPS68972  Calandrinia ciliata Edward Lee 1935-3-29 1306 Contra Costa Marsh Creek Rd 1.2 mi e Clayton (n of Mt. Diablo) Comment
  UC1136642  Calandrinia ciliata R. C. Wilson 108 Contra Costa 1/2 mi sw Nortonville; Mt. Diablo Quadrangle Comment
  UC768643  Calochortus albus R. F. Hoover 1939-4-26 4067 Contra Costa Head of Markley Canyon (w branch) Markley Canyon Comment
  JEPS125942  Calochortus pulchellus D. W. Taylor 2001-4-26 17627 Contra Costa Black Diamond Mines Regional Preserve; 1 mile SSW of Nortonville (site); growing on access road to PG&E electrical transmission lines. Comment
  JEPS61709  Calochortus pulchellus W. L. Jepson 1918-6-3 7570 Contra Costa Donner Canyon Mt. Diablo 533 Comment
  JEPS74732  Calochortus pulchellus Rimo Bacigalupi 1975-5-17 9331 Contra Costa 2.5 mi se Clayton (Marsh Creek Road, near Russelman Park, n base of Mt. Diablo); Mt. Diablo Comment
  RSA29584  Calochortus pulchellus Joseph A. Ewan 1934-4-8 8774 Contra Costa Mt. Diablo: South Fork Marsh Creek. Comment
  UC1300909  Calochortus pulchellus Helen K. Sharsmith 1962-5-20 5069 Contra Costa Morgan Territory Road, ne slopes of Mount Diablo San Francisco Bay Region, Mount Diablo 365 Comment
  JEPS61759 Image available Calochortus venustus W. L. Jepson 1918-6-3 7571 Contra Costa near summit Donner Canyon; Mt. Diablo 1066 Comment
  RSA710325  Calystegia subacaulis R. K. Brummitt, Barbara Ertter, N. A. Brummitt 1998-5-13 19841 Contra Costa S of Antioch, Black Diamond Mine Regional Park. 400 Comment
  UC1123589  Calystegia subacaulis C. M. Belshaw 1936-5-9 2076 Contra Costa 2.25 mi e Clayton; Mt. Diablo quad 381 Comment
  UC1794958  Calystegia subacaulis R. K. Brummitt and B. Ertter 1998-5-13 19841 Contra Costa S of Antioch, Black Diamond Mine Regional Park. Comment
  CAS-BOT-BC224336  Calystegia subacaulis subsp. subacaulis R. K. Brummitt; B. Ertter 1998-5-13 19841 Contra Costa S of Antioch, Black Diamond Mine Regional Park 400 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
  JEPS12784  Camissonia contorta Rimo Bacigalupi with G. T. Robbins 1955-5-4 4977 Contra Costa s. of and above Nortonville (site) 304 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
  POM224488  Camissonia ovata L. S. Rose 1936-4-1 36093 San Francisco Mt. Davidson. 122 Comment
  UC635407  Camissoniopsis intermedia H. L. Mason 1929-3-15 5048 Contra Costa Nortonville Comment
  UC726184  Camissoniopsis micrantha A. A. Heller 1942-4-12 Contra Costa 4 mi w Antioch 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
  CDA40558  Cardaria chalepensis V. Guise & B. Slate 2014-4-3 PDR# 070 P06223872 Contra Costa Concord; end of Crystal Ranch Road, Save Mt. Diablo property. 0 Comment
  UC26404  Castilleja affinis subsp. affinis W. H. Brewer 1862-5-15 1093 Contra Costa Kirker Pass Comment
  CHSC59823  Castilleja exserta Linda Osborne 1980-4-5 1 Contra Costa Los Malinos Jr College, ca. 50 m e of Lake Parcourse handwalk bars and 75 m n. Comment
  JEPS15210  Castilleja exserta subsp. exserta C. M. Belshaw 1936-5-9 2082 Contra Costa 0.5 mi n Nortinville; Mt. Diablo Quad. 274 Comment
  UC1301202  Castilleja exserta subsp. exserta Helen K. Sharsmith 1963-4-7 5289 Contra Costa w of Antioch (e side of Kirker Pass road); San Francisco Bay Region 152 Comment
  UC27266  Castilleja exserta subsp. exserta State Survey 1117 Contra Costa near Clayton; Kirker Pass Summit Comment
  UC27222  Castilleja rubicundula subsp. lithospermoides W. H. Brewer 1862-5-20 1132 Contra Costa hills ne Mt. Diablo Comment
  CDA43391  Caulanthus flavescens Mike Pitcairn & Dean Kelch 2015-3-6 s.n. Contra Costa Overlook Trail, Black Diamond Mines, East Bay Regional Parks. Comment
  RSA15450  Ceanothus cuneatus Alice Eastwood, John T. Howell 1936-4-19 s.n. Contra Costa Nortonville. Comment
  UC1071130  Ceanothus cuneatus var. cuneatus R. C. Wilson 1935-2-26 111 Contra Costa 1 mi sw Somersville; Mt. Diablo quad 365 Comment
  UC692617  Ceanothus cuneatus var. cuneatus Mary L. Bowerman 1933-4-9 1843 Contra Costa w fork of Dannor Canyon, Mount Diablo Comment
  JEPS42180  Ceanothus oliganthus var. sorediatus W. L. Jepson 1918-6-3 7586 Contra Costa Donner Canyon Mt. Diablo Comment
  UC692586  Ceanothus oliganthus var. sorediatus Mary L. Bowerman 1932-9-17 1580 Contra Costa West branch of Donner Canyon Mount Diablo Comment
  UC692588  Ceanothus oliganthus var. sorediatus Mary L. Bowerman 1935-5-30 3084 Contra Costa By Donner Canyon stream 161 Comment
  GH425256  Ceanothus sorediatus W. L. Jepson 7586 Unknown Donner Canon, Mt. Diablo 609 Comment
  UC421693  Centromadia fitchii John Thomas Howell 1929-9-21 4388 Contra Costa 1 mi se Clayton Comment
  UC34726  Chaenactis glabriuscula var. glabriuscula Chesnut and Drew Contra Costa Summerville Comment
  UC691389  Cirsium cymosum var. cymosum Mary L. Bowerman 1933-6-20 2323 Contra Costa Median Ridge Donner Canyon Comment
  JEPS59167  Cirsium occidentale var. venustum W. L. Jepson 7571 a Contra Costa Mt. Diablo, Donner Canyon Contra Costa Comment
  JEPS59168  Cirsium occidentale var. venustum W. L. Jepson 7571 a Contra Costa Mt. Diablo, Donner Canyon Contra Costa Comment
  UC1122359  Clarkia affinis C. M. Belshaw 1936-5-9 2075 Contra Costa 2 1/4 mi e Clayton (plot 10); Mt. Diablo Quadrangle Comment
  UC1122360  Clarkia affinis C. M. Belshaw 1936-5-15 2130 Contra Costa Stewartsville Mt. Diablo Quadrangle Comment
  JEPS43663  Clarkia biloba W. L. Jepson 1918-6-3 7585 Contra Costa Donner Canyon Mt. Diablo Comment
  JEPS99586  Clarkia biloba Mary Bowerman 1995-7-2 Contra Costa Mount Diablo, foot trail between Back Canyon and Donner Canyon. In Donner side of ridge. Comment
  LA106651  Clarkia biloba subsp. biloba W. L. Jepson; 1918-6-3 7585 Contra Costa Donner Canyon, Mount Diablo 685 Comment
  JEPS43615  Clarkia concinna subsp. concinna W. L. Jepson 1918-6-3 7572 Contra Costa Donner Canyon, Mt. Diablo Comment
  UC1122404  Clarkia purpurea subsp. quadrivulnera C. M. Belshaw 1936-5-9 2077 Contra Costa 1 1/2 mi e Mulligan Hill (near plot 13); Mt. Diablo Quadrangle Comment
  UC692493  Clarkia purpurea subsp. quadrivulnera Charles Belshaw 1936-5-13 2112 Contra Costa ridge n Marsh Creek (about 2 mi nw of summit of Clayton-Livermore road); Mount Diablo Comment
  JEPS43602  Clarkia unguiculata W. L. Jepson 1918-6-5 7598 Contra Costa Donner Canyon Mt. Diablo 533 Comment
  JEPS68968  Claytonia exigua subsp. exigua Edward Lee 1935-3-10 1302 Contra Costa Nortonville , Kirker Creek (s watershed Kirker Creek) Comment
  JEPS68969  Claytonia exigua subsp. exigua Edward Lee 1935-3-10 1303 Contra Costa Nortonville , Kirker Creek (s watershed Kirker Creek) Comment
  UC692551  Claytonia exigua subsp. exigua Mary L. Bowerman 1932-3-23 1128 Contra Costa e of Donner Creek; Mount Diablo 243 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
  JEPS68970  Claytonia perfoliata subsp. perfoliata Edward Lee 1935-3-10 1304 Contra Costa Nortonville; s watershed of Kirker Creek Comment
  UC1745809  Claytonia perfoliata subsp. perfoliata Annetta M. Carter, Edward Lee 1935-3-29 756 Contra Costa Marsh Creek Rd., 1.2 mi. E of Clayton. Comment
  SEINET3820706 Image available Collinsia sparsiflora Lewis S. Rose 1934-3-13 s.n. Unknown Clayton. Comment
  JEPS6336  Collinsia sparsiflora var. collina Mary L. Bowerman 1933-4-9 1836 Contra Costa w fork Donner Canyon Mount Diablo (Mount Diablo); Donner Canyon 243 Comment
  UC672470  Collinsia sparsiflora var. collina Herbert L. Mason 1929-3-15 5051 Contra Costa Nortonville Comment
  UC691585  Collinsia sparsiflora var. collina Mary L. Bowerman 1933-4-9 1836 Contra Costa w fork Donner Canyon Mount Diablo (Mount Diablo) 243 Comment
  UC766264  Collinsia sparsiflora var. collina R. F. Hoover 1938-3-5 2817 Contra Costa mouth of Kirker Creek Canyon Comment
  SBBG6880  Collinsia sparsiflora var. sparsiflora J. M. Tucker 1946-3-24 1381 Contra Costa hills between Nortonville and Somersville Comment
  UC141630  Convolvulus simulans Katharine Brandegee 1907-6-16 Contra Costa fields bet. Antioch and Marsh Creek Comment
  JEPS37545  Cotula coronopifolia R. F. Hoover 1935-3-10 302 Contra Costa Nortonville Comment
  UC762281  Crocanthemum scoparium var. vulgare R. F. Hoover 1939-5-20 4108 Contra Costa Head of Markley Canyon 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
  UC691904  Cuscuta subinclusa Mary L. Bowerman 1932-9-17 1587 Contra Costa Donner Canyon, w fork toward mouth Mount Diablo Comment
  SEINET2444146  Datisca glomerata C. Davidson, Barbara Ertter 2010-9-1 11791 Contra Costa Mt. Diablo, Donner Canyon. N side of Mt. Diablo State Park. (Regency Dr. access.). 191 Comment
  UC692666  Datisca glomerata Mary L. Bowerman 1933-6-21 2336 Contra Costa Mount Diablo, Donner Canyon Donner Canyon; Mount Diablo, Donner Canyon 335 Comment
  UC691895  Daucus pusillus Mary L. Bowerman 1935-5-16 2990 Contra Costa at end of rd. Russelman Park; Mt. Diablo, Russelman Park Comment
  CAS-BOT-BC8748  Delphinium hansenii H. Lewis; C. Epling 1946-5-5 605 Contra Costa 0.5 miles south of Somersville Comment
  LA207418  Delphinium hansenii H. Lewis; Carl Epling 1946-5-5 605 Contra Costa 0.5 mi. S of Somersville Comment
  UC1018502  Delphinium hansenii subsp. hansenii H. Lewis and C. Epling 1946-5-5 605 Contra Costa 0.5 mi s Somersville Comment
  JEPS51676  Dendromecon rigida Chesnut and Drew April, 1890 Contra Costa Sommersville Comment
  UC1051410  Dendromecon rigida Helen K. Sharsmith 1954-3-24 4408 Contra Costa canyon above old Nortonville Mines (near Kirker Pass Road between Clayton and Antioch) 304 Comment
Read comments
Oct 2 2015
  HSC101953  Dichelostemma capitatum subsp. capitatum Nikolaus Gillen, Michelle Bihler 2014-3-20 4 Contra Costa Mount Diablo State Park. Back Creek Trail. 211 Comment
  JEPS64157  Dichelostemma congestum W. L. Jepson 1918-6-5 7603 Contra Costa Donner Canyon Mt. Diablo 670 Comment
  UC1133994  Dichelostemma congestum C. M. Belshaw 1936-5-9 2074 Contra Costa 2.25 mi e Clayton; Mt. Diablo Quad. 381 Comment
  JEPS68971  Dodecatheon clevelandii subsp. patulum Edward Lee 1935-3-10 1305 Contra Costa s watershed of Kirker Creek Nortonville (s watershed of Kirker Creek) (Nortonville) Comment
  SBBG5610  Dodecatheon clevelandii subsp. patulum J. M. Tucker 1946-3-24 1384 Contra Costa hills between Nortonville and Somersville Comment
  UC1039536  Dodecatheon clevelandii subsp. patulum Herbert L. Mason 1929-3-15 5044 Contra Costa Nortonville Comment
  UC1123279  Dodecatheon clevelandii subsp. patulum R. C. Wilson 1935-2-26 110 Contra Costa 3/4 mi sw Somersville; Mt. Diablo Quad., sw of Somersville Comment
  UC673501  Dodecatheon clevelandii subsp. patulum Herbert L. Mason 1929-3-15 5056 Contra Costa summit of hill e Nortonville; e of Nortonville Comment
  UC765525  Dodecatheon clevelandii subsp. patulum R. F. Hoover 1938-3-5 2815 Contra Costa mouth of Kirker Creek Canyon Comment
  SBBG5600  Dodecatheon hendersonii J. M. Tucker 1946-3-24 1387 Contra Costa hills between Nortonville and Somersville Comment
  UC1123275  Dodecatheon hendersonii R. C. Wilson 1935-2-27 114 Contra Costa Somersville Mt. Diablo Quad. Comment
  UC673401  Dodecatheon hendersonii Herbert L. Mason 1929-3-15 5047 Contra Costa s Nortonville; s of Nortonville Comment
  UC691831  Dodecatheon hendersonii Mary L. Bowerman 1933-4-9 1839 Contra Costa Donner Canyon Mount Diablo, Donner Canyon 243 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
  JEPS49894  Dudleya cymosa subsp. paniculata Elizabeth Ferguson 1918-1-1 Contra Costa Donner Canyon Mount Diablo Comment
  SBBG21399  Ehrendorferia chrysantha V. Haraden 1941-7-18 14 Contra Costa near Nortonville 121 Comment
  POM300590  Elymus X hansenii Mary L. Bowerman 1935-5-25 3073 Contra Costa Meridian Peak, west side of Devil's Pulpit; On edge of outcrop 1082 Comment
  JEPS68570  Elymus glaucus W. L. Jepson 1918-6-3 7576 Contra Costa Donner Canyon Vicinity of San Francisco Bay, Mt. Diablo 533 Comment
  JEPS99562  Elymus glaucus Mary Bowerman 1995-7-2 Contra Costa Mount Diablo, (probably Back Canyon or foot trail to Donner Canyon). Comment
  UC691201  Elymus glaucus Mary L. Bowerman 1933-6-21 2333 Contra Costa Donner Canyon Mount Diablo (along stream) Comment
  UCD61820  Elymus glaucus Beecher Crampton 1956-5-14 3382 Contra Costa Markley Canyon, on the Somersville Road, 4.4 miles southwest of Antioch. Comment
  UCD62515  Elymus multisetus Beecher Crampton 1956-5-14 3386 Contra Costa Between the old coal mining towns of Somersville and Nortonville, 6.7 miles southwest of Antioch. Comment
  JEPS68374  Elymus trachycaulus W. L. Jepson 1918-6-5 7602 Contra Costa Donner Canyon Vicinity of San Francisco Bay, Mt. Diablo 533 Comment
  CDA2083  Eragrostis curvula H. R. VanBrocklin 1961-4-12 Contra Costa North side Marsh Creek Road, 1 mile east of Clayton. 0 Comment
  UCD63196  Eragrostis curvula George W. Murray 1964-7-24 Contra Costa Along dry roadside cut, 1 to 2 miles E of Clayton, Marsh Creek Road. Comment
  UC1152689  Eragrostis curvula var. curvula George W. Murray 1964-7-24 Contra Costa 1 to 2 mi. e. Clayton (Marsh Creek Rd.) Comment
  UC630417  Eremocarpus setiger Paule Guiget and Annetta Carter 1939-8-13 1452 Contra Costa on Marsh Creek rd 2.8 mi e Clayton 213 Comment
  CAS-BOT-BC131505  Ericameria arborescens Mary L. Bowerman 1932-9-17 1583 Contra Costa Donner Canyon, west fork: Bank between upper forks 304 Comment
  JEPS31349  Ericameria linearifolia W. L. Jepson 1918-6-3 7580 Contra Costa Donner Canon Mt. Diablo 609 Comment
  UC1543059  Erigeron philadelphicus var. philadelphicus Donald G. Nelson 1938-4-24 566 Contra Costa 1 mi n Mount Diablo (Marsh Creek Highway) Comment
  CAS-BOT-BC224221  Eriodictyon californicum Alice Eastwood; John Thomas Howell 1936-4-19 s.n. Contra Costa Nortonville Comment
  RSA15452  Eriodictyon californicum Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville. Comment
  SBBG21151  Eriodictyon californicum V. Haraden 1941-7-18 17 Contra Costa near Nortonville 121 Comment
  UC1032304  Eriogonum gracile G. T. Nordstrom 1937-10-28 1409 Contra Costa 1.6 mi nne Somersville; Mt. Diablo Quadrangle Comment
  UC692111  Eriogonum luteolum var. luteolum Mary L. Bowerman 1932-10-22 1637 Contra Costa road to Quicksilver Mine (flats at base of North Peak); Mount Diablo, North Peak Comment
  CAS-BOT-BC268906  Eriogonum nudum var. auriculatum Mary L. Bowerman 1932-9-17 1578 Contra Costa Mount Diablo. Donner Canyon, west branch. (Below fork of west branch.) Comment
  CAS-BOT-BC268915  Eriogonum nudum var. auriculatum Mary L. Bowerman 1932-9-17 1585 Contra Costa Mount Diablo. Donner Canyon, West fork: of west fork 335 Comment
  CAS-BOT-BC268916  Eriogonum nudum var. auriculatum Mary L. Bowerman 1932-9-17 1585 Contra Costa Mount Diablo. Donner Canyon, West fork: of west fork 335 Comment
  UC692197  Eriogonum nudum var. auriculatum Mary L. Bowerman 1932-9-17 1578 Contra Costa Donner Canyon, w branch below fork Mount Diablo Comment
  UC692195  Eriogonum nudum var. pubiflorum Mary L. Bowerman 1932-9-17 1586 Contra Costa Donner Canoyn, w fork toward mouth Mount Diablo Comment
  UC692196  Eriogonum nudum var. pubiflorum Mary L. Bowerman 1932-9-17 1586 Contra Costa Donner Canoyn, w fork toward mouth Mount Diablo Comment
  CAS-BOT-BC300926  Eriophyllum jepsonii John Thomas Howell 1950-7-5 26636 Contra Costa Above Nortonville Comment
  UC691685  Eriophyllum jepsonii Mary L. Bowerman 1931-6-2 918 Contra Costa Gregory Ranch Road Comment
  UCD132123  Eriophyllum jepsonii John Thomas Howell 1950-7-5 26636 Contra Costa above Nortonville. Comment
  UC1130297  Erodium cicutarium R. C. Wilson 1935-2-26 113 Contra Costa Somersville Mt. Diablo Quad. 289 Comment
  JEPS105685  Erodium macrophyllum David Gowen 2003-2-23 s. n. Contra Costa Black Diamond Mines Regional Park, w-facing hillside ca. 1 km due E of Sidney Flat 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
  UC17071  Erodium macrophyllum W. H. Brewer 1862-5-10 1067 Contra Costa near Kirker Pass Comment
  UC17073  Erodium macrophyllum State Survey 1862-5-10 1067 Contra Costa Kirker Pass Comment
  UC726212  Eschscholzia A. A. Heller 1938-4-9 15018 Contra Costa 3 mi sw of Antioch Comment
  CAS-BOT-BC402983  Eschscholzia californica A. A. Heller 1938-4-9 15018 Contra Costa 3 miles southwest of Antioch Comment
  CAS-BOT-BC402989  Eschscholzia californica Peter H. Raven 1950-7-5 2497 Contra Costa Above Nortonville 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
  JEPS99575  Eucrypta chrysanthemifolia Mary L. Bowerman 1995-7-2 Contra Costa Mount Diablo, Back Canyon. 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
  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
  A401092  Forestiera neomexicana J. T. Howell 1933-3-29 10905 Unknown Canyon below Nortonville Comment
  SEINET3562429 Image available Forestiera neomexicana Lewis S. Rose 1932-5-26 32117 Contra Costa Nortonville. Comment
  POM203448  Forestiera pubescens J. T. Howell 1933-3-29 10905 Contra Costa Canyon below Nortonville Comment
  CAS-BOT-BC384137  Forestiera pubescens subsp. parvifolia John Thomas Howell 1933-3-29 10905 Contra Costa Canyon below Nortonville Comment
  CAS-BOT-BC62921  Frangula californica subsp. tomentella John Thomas Howell 1930-9-28 5490 Contra Costa Marsh Creek Rd., e. of Clayton. Comment
  UC1122130  Frankenia salina C. M. Belshaw 1936-5-9 2080 Contra Costa 1.5 mi e Mulligan Hills; Mt. Diablo Quad. 152 Comment
  UC1123360  Fraxinus dipetala C. M. Belshaw 1936-5-15 2128 Contra Costa Stewartsville Mt. Diablo Quad. 228 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
  JEPS61926  Fritillaria affinis W. L. Jepson 1918-6-3 7573 Contra Costa Donner Canyon; Mt. Diablo 533 Comment
  UC765860  Fritillaria affinis R. F. Hoover 1939-4-13 4013 Contra Costa head of Markley Canyon, (west branch) Markley Canyon Comment
  JEPS7031  Galium andrewsii subsp. gatense Miss Ferguson Contra Costa Donner Canyon Mt. Diablo Comment
  UC691540  Galium aparine Mary L. Bowerman 1935-5-16 2985 Contra Costa Russelman Park Mount Diablo (flat at end of road) 381 Comment
  UC691533  Galium porrigens Mary L. Bowerman 1935-5-16 2982 Contra Costa flat at end of road Mount Diablo, Russelman Park 381 Comment
  JEPS99600  Geranium molle Mary Bowerman 1978-4-17 Contra Costa Mount Diablo, Back Canyon. 259 Comment
  CDA31891  Gilia angelensis D. G. Kelch 2008-4-13 8 .04 Marin Mt Tamalpais. Matt Davis Trail. Near small picnic area between parking lot and mine entrance. Comment
  JEPS69577  Gilia capitata subsp. staminea W. L. Jepson 1931-4-5 15723 Contra Costa vicinity San Francisco Bay (Nortonville); vicin San Francisco Bay, Nortonville Comment
  UC23834  Gilia capitata subsp. staminea W. H. Brewer 1800-1 1118 Contra Costa n Kirker Pass; n of Kirker Pass Comment
  UC30197  Gilia capitata subsp. staminea W. H. Brewer 1862-5-19 1118 Contra Costa n Kirker Pass; n of Kirker Pass Comment
  UC909033  Gilia clivorum Herbert L. Mason 1929-3-29 5128 Contra Costa 2 mi e Clayton (Marsh Creek Road); e of Clayton Comment
  UC963965  Gilia clivorum R. F. Hoover 1938-3-25 2895 Contra Costa Markley Canyon Comment
  JEPS99596  Githopsis diffusa subsp. robusta Mary Bowerman 1978-5-14 Contra Costa Mount Diablo, Back Canyon trail to mine. Comment
  UC1118576  Grindelia hirsutula G. T. Nordstrom 1937-10-28 1408 Contra Costa 1.6 mi nne Somersville; Mt. Diablo Quad. 182 Comment
  JEPS68950  Guillenia lasiophylla Edward Lee 1935-3-10 1279 Contra Costa Donovan Road, w watershed of Kirker Creek Kirker Pass, Kirker Creek Comment
  JEPS68953  Guillenia lasiophylla Edward Lee 1935-3-10 1283 Contra Costa Donovan Road, w watershed of Kirker Creek Kirker Pass, Kirker Creek Comment
  SJSU14141  Gutierrezia californica D. B. Gschwend 1975-10-18 Contra Costa 3 mi up Nortonville Rd from Kirker Pass Rd, S of Pittsbutg 487 Comment
Read comments
Aug 17 2011
  UC1118612  Gutierrezia californica G. T. Nordstrom 1937-10-28 1406 Contra Costa 1.6 mi nne Somersville; Mt. Diablo Quad. 182 Comment
  CAS-BOT-BC305326  Helianthella castanea John Thomas Howell 1931-5-12 6475 Contra Costa Nortonville Comment
  CAS-BOT-BC305327  Helianthella castanea John Thomas Howell 1931-5-12 6475 Contra Costa Nortonville Comment
  CAS-BOT-BC305328  Helianthella castanea John Thomas Howell 1931-5-12 6475 Contra Costa Nortonville Comment
  GH414536  Helianthella castanea J. T. Howell 1931-5-12 6475 Unknown Nortonville Comment
  JEPS21041  Helianthella castanea R. F. Hoover 1939-4-13 4014 Contra Costa head of west branch Markley Canyon Comment
  POM203709  Helianthella castanea J. T. Howell 1931-5-12 6475 Contra Costa Nortonville Comment
  UC761942  Helianthella castanea R. F. Hoover 1939-4-13 4014 Contra Costa head (west branch) Markeley Canyon Comment
  CAS-BOT-BC223916  Helianthemum scoparium Robert F. Hoover 1939-5-20 4108 Contra Costa Head of Markley Canyon Comment
  CAS-BOT-BC305606  Helianthus californicus Mary L. Bowerman 1932-9-17 1581 Contra Costa Mount Diablo. Donner Canyon, west fork Comment
  UC697183  Helianthus californicus Mary L. Bowerman 1932-9-17 1581 Contra Costa west fork Donner Canyon (streambed); Mount Diablo Comment
  JEPS99532  Hemizonia congesta subsp. luzulifolia Mary L. Bowerman 1993-10-17 Contra Costa Mount Diablo. Regency road. Comment
  JEPS12781  Hesperevax sparsiflora var. sparsiflora Rimo Bacigalupi with G. T. Robbins 1955-5-4 4974 Contra Costa pasture near summit Kirker Pass (along old road (not summit of new freeway bypass)) 274 Comment
  JEPS33801  Hesperevax sparsiflora var. sparsiflora W. L. Jepson 1931-4-5 15719 Contra Costa Nortonville 457 Comment
  CAS-BOT-BC167429  Hesperolinon breweri Robert F. Hoover 1939-5-20 4106 Contra Costa Head of Markley Canyon Comment
  CAS-BOT-BC167431  Hesperolinon breweri Helen K. Sharsmith 1947-6-2 3947 Contra Costa Headwaters of Marsh Creek, on shale (?) 0.6 miles from summit of Clayton-Tassajaro-Livermore Road, Mount Diablo 304 Comment
  CAS-BOT-BC167439  Hesperolinon breweri Helen K. Sharsmith 1947-6-2 3947 Contra Costa Headwaters of Marsh Creek, on shale (?) 0.6 miles from summit of Clayton-Tassajaro-Livermore road, Mount Diablo 304 Comment
  JEPS32328  Hesperolinon breweri W. L. Jepson 1918-6-3 7568 Contra Costa Donner Canyon Mt. Diablo Comment
  POM86814  Hesperolinon breweri Katherine Brandegee 1907-6-16 s.n. Contra Costa Hills betweeen Antioch and Marsh Creek, on easterly side of Mt. Diablo Comment
  RSA151584  Hesperolinon breweri H. K. Sharsmith 1947-6-2 3947 Contra Costa Headwaters of marsh Creek, on shale (?), 0.6 miles from summit of Clayton-Tassajaro-Livermore road, Mount Diablo 305 Comment
  UC1212211  Hesperolinon breweri Helen K. Sharsmith 1947-6-2 3947 Contra Costa 0.6 mi from summit of Clayton-Tassajaro-Livermore road (at headwaters of creek); Mount Diablo, Marsh Creek 304 Comment
  UC762273  Hesperolinon breweri R. F. Hoover 1939-5-20 4106 Contra Costa head Markley Canyon Comment
  UCR168521  Hesperolinon micranthum J. T. Howell 1931-5-12 6472 Contra Costa Central Western; San Francisco Bay area, Nortonville 488 Comment
  SBBG21359  Heteromeles arbutifolia V. Haraden 1941-7-18 12 Contra Costa near Nortonville 121 Comment
  JEPS125919  Heterotheca sessiliflora subsp. bolanderi D. W. Taylor 2001-9-18 17913 Contra Costa Hillslopes above Kirker Pass road, drainage of Kirker Creek, along Nortonville Road directly under high-voltage steel tower electrical transmission lines. 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
  UC4897718  Holocarpha heermannii Lewis S. Rose 1934-9-9 34462 Contra Costa 9 mi ne Danville Comment
  UC1069564  Holocarpha virgata subsp. virgata G. T. Nordstrom 1937-10-28 1407 Contra Costa 1.6 mi nne Somersville; Mt. Diablo Quad. 188 Comment
  UC691150  Horkelia californica subsp. frondosa Mary L. Bowerman 1933-5-16 2996 Contra Costa just s the north boundary of section 25.; russelman Park 396 Comment
  UC691979  Juncus xiphioides Mary L. Bowerman 1933-6-21 2337 Contra Costa Donner Canyon Mount Diablo 335 Comment
  UC691513  Keckiella corymbosa Mary L. Bowerman 1936-9-10 3544 Contra Costa Donner Canyon; Mount Diablo 304 Comment
  JEPS70570  Koeleria macrantha W. L. Jepson 1918-6-5 7601 Contra Costa Donner Canyon Mt. Diablo; vicinity of San Francisco Bay, Mt. Diablo 533 Comment
  UC691244  Koeleria macrantha Mary L. Bowerman 1935-5-16 2992 Contra Costa Russelman Park Mount Diablo (just s of the n boundary of section 25 (e of gate)); , Russelman Park Comment
  UCD85733  Koeleria macrantha Beecher Crampton 1956-5-14 3394 Contra Costa 3.7 miles southeast of Clayton, on Marsh Creek Road. Comment
  CAS-BOT-BC337977  Lasthenia californica W. H. Brewer 1862-5-19 1120 Contra Costa North of Kirker's Pass Comment
  UC30410  Lasthenia californica W. H. Brewer 1862-5-19 1120 Contra Costa N of Kirker's Pass Comment
  JEPS10382  Lasthenia californica subsp. californica W. L. Jepson 1931-4-5 15718 Contra Costa adobe flat in hills about Nortonville 457 Comment
  UC1301065  Lasthenia gracilis Helen K. Sharsmith 1963-4-7 5290 Contra Costa e side Kirker Pass Road (w of Antioch); San Francisco Bay Region 152 Comment
  UC1363810  Lasthenia gracilis Robert Ornduff 1958-3-22 4809 Contra Costa 1.5 mi sw Buchanan Road junction (along side of Kirker Pass) Comment
  CAS-BOT-BC367585  Lasthenia microglossa Alice Eastwood; John Thomas Howell 1936-4-19 2139 Contra Costa Nortonville Comment
  JEPS68977  Lasthenia minor Edward Lee 1935-3-29 1312 Contra Costa Donovan Rd e Kirker Pass (edges of eroded gullies); West watershed of Kirker Creek Comment
  SEINET3387255 Image available Lasthenia minor Lewis S. Rose 1933-3-29 33039 Contra Costa Nortonville. Comment
  JEPS55375  Lathyrus vestitus var. vestitus W. L. Jepson 1918-6-5 7615 Contra Costa Donner Canyon Mt. Diablo 701 Comment
  CAS-BOT-BC215739  Lepechinia calycina Joanne Taylor 1941-7-18 18 Contra Costa Nortonville 243 Comment
  SBBG21163  Lepechinia calycina V. Haraden 1941-7-18 11 Contra Costa near Nortonville 121 Comment
  CAS-BOT-BC88707  Lepidium acutidens Annetta Mary Carter 1935-3-10 753 Contra Costa Kirker Pass road, south of junction with Nortonville road. 121 Comment
  SBBG29865  Lepidium dictyotum A. M. Carter 1935-3-10 753 Contra Costa Kirker Pass Rd, S of jct with Nortonville Rd 121 Comment
  UC518001  Lepidium dictyotum var. acutidens Lewis S. Rose 1933-3-29 33041 Contra Costa Nortonville Comment
  UC545796  Lepidium dictyotum var. acutidens Annetta M. Carter 1935-3-10 753 Contra Costa s of Kirker Pass road junction with Nortonville road (Kirker Pass road) 121 Comment
  CAS-BOT-BC89765  Lepidium latipes John Thomas Howell 1933-3-29 10907 Contra Costa Nortonville Hills. Comment
  JEPS53652  Lepidium latipes W. L. Jepson 1931-4-5 15720 Contra Costa Nortonville 396 Comment
  RSA66775  Lepidium latipes J. T. Howell 1933-3-29 10907 Contra Costa Nortonville Comment
  SBBG2518  Lepidium nitidum J. M. Tucker 1946-3-24 1380 Contra Costa hills between Nortonville and Somersville Comment
  JEPS68978  Lepidium nitidum var. nitidum Edward Lee 1935-3-29 1314 Contra Costa Nortonville, s. watershed of Kirker Creek 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
  CAS-BOT-BC226592  Leptosiphon ambiguus Mary L. Bowerman 1934-3-18 2481 Contra Costa Mount Diablo. West of Russelman Park on edge of Donner Canyon 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
  JEPS108215  Linanthus ambiguus David Gowen 2005-4-26 268 Contra Costa Mt. Diablo State Park. Clayton Oaks Rd. (dirt), which follows the ridge east of Donner Canyon, ca 20 feet south of junction with Bruce Lee Trail. Comment
  UC1602386  Linanthus ambiguus Mary L. Bowerman 1934-3-18 2481 Contra Costa w of Russelman Park (on the edge of Donner Canyon); Mount Diablo, Donner Canyon 381 Comment
  UC449794  Linanthus ciliatus Chesnut and Drew 1889-4-17 Contra Costa Sommersville Comment
  UC568777  Linanthus ciliatus G. L. Stebbins Jr. 1937-5-1 2111 Contra Costa 1 mi s Somersville 365 Comment
  UC932049  Linanthus ciliatus Verne Grant and Alva Grant 1948-5-15 8503 Contra Costa on Sommerville to Antioch road; Sommerville Range Comment
  UC964003  Linanthus pygmaeus subsp. continentalis R. F. Hoover 1939-4-13 4020 Contra Costa w branch Head of Markley Canyon Comment
  PASA2233  Lithophragma affine Annetta Carter 1929-3-31 Contra Costa Near Clayton Comment
  UC692422  Lithophragma heterophyllum Mary L. Bowerman 1933-4-9 1840 Contra Costa Donner Canyon, W fork Mount Diablo (by trail) 274 Comment
  UCD36917  Lolium temulentum Beecher Crampton 1956-5-14 3389 Contra Costa 7 miles southwest of city of Antioch, just east of old mining town of Nortonville. Comment
  UC691775  Lomatium californicum Mary L. Bowerman 1931-6-2 914 Contra Costa Mt. Diablo, Gregory Ranch Rd. 518 Comment
  JEPS17143  Lomatium dasycarpum subsp. dasycarpum W. L. Jepson 1918-6-3 7579 Contra Costa Donner Canyon Mt. Diablo Comment
  UC763127  Lomatium dasycarpum subsp. dasycarpum R. F. Hoover 1939-4-13 4017 Contra Costa Markley Canyon, head of W branch Comment
  JEPS12853  Lonicera subspicata var. denudata W. L. Jepson 1918-6-5 7613 Contra Costa Mt. Diablo, N. Peak, Donner Canyon Comment
  UC1129295  Lupinus albifrons var. albifrons C. M. Belshaw 1936-5-8 2059 Contra Costa 2.25 mi e Clayton; Mt. Diablo quad 381 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
  JEPS103668  Lupinus concinnus David Gowen 2003-5-15 Contra Costa Black Diamond Mines Regional Preserve, Chaparral Loop Trail 304 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
  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
  UC1300900  Lupinus microcarpus var. microcarpus Helen K. Sharsmith 1963-4-7 5287 Contra Costa e side of Kirker Pass road w Antioch; San Francisco Bay Region, w of Antioch 152 Comment
  UC1562540  Lupinus microcarpus var. microcarpus Barbara Ertter with Elizabeth Neese 1988-4-24 7453 Contra Costa between and parallel to Nortonville and Somersville roads Black Diamond Mines Regional Preserve sw Antioch; Black Diamond Mines Regional Preserve Comment
  UC1562852  Lupinus microcarpus var. microcarpus Barbara Ertter with Elizabeth Neese 1988-4-24 7453 Contra Costa between and parallel to Nortonville and Somersville roads Black Diamond Mines Regional Preserve sw Antioch; Black Diamond Mines Regional Preserve 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
  UC2028336  Luzula macrantha Barbara Ertter 1991-5-5 9778 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, ridge E of Coal Canyon Comment
  CAS-BOT-BC342681  Madia elegans Mary L. Bowerman 1936-9-10 3542 Contra Costa Mount Diablo. Donner Canyon 335 Comment
  UC697170  Madia elegans Mary L. Bowerman 1936-9-10 3542 Contra Costa Donner Canyon Mount Diablo (by streamlet) 335 Comment
  CAS-BOT-BC324491  Madia radiata A. A. Heller 1938-4-9 15015 Contra Costa 3 miles southwest of Antioch Comment
  UC725398  Madia radiata A. A. Heller 1938-4-9 15015 Contra Costa 3 mi sw Antioch Comment
  UC830900  Madia radiata A. A. Heller 1938-4-9 15015 Contra Costa 3 mi sw Antioch Comment
Read comments
Aug 21 2017
  CAS-BOT-BC206327  Malacothamnus fremontii Elizabeth McClintock 1967-10-22 184 Contra Costa Nortonville Comment
  CAS-BOT-BC206328  Malacothamnus fremontii Joanne Taylor 1941-7-18 20 Contra Costa By hills of Nortonville. 243 Comment
  CAS-BOT-BC206329  Malacothamnus fremontii Walter Knight; Irja Knight 1967-4-2 s.n. Contra Costa Nortonville. Comment
  CAS-BOT-BC206330  Malacothamnus fremontii Lewis S. Rose 1954-6-29 54081 Contra Costa Nortonville. Comment
  CAS-BOT-BC206331  Malacothamnus fremontii John Thomas Howell; T. H. Kearney 1950-7-5 26635 Contra Costa Nortonville. Comment
  CAS-BOT-BC206332  Malacothamnus fremontii John Thomas Howell; T. H. Kearney 1950-7-5 26635 Contra Costa Hills above Nortonville. Comment
  CAS-BOT-BC206333  Malacothamnus fremontii John Thomas Howell; T. H. Kearney 1950-7-5 26635 Contra Costa Nortonville. Comment
  CAS-BOT-BC206334  Malacothamnus fremontii John Thomas Howell; T. H. Kearney 1950-7-5 26635 Contra Costa Nortonville. Comment
  GH420529  Malacothamnus fremontii J. T. Howell 1931-5-12 6470 Unknown Nortonville Comment
  GH420537  Malacothamnus fremontii J. T. Howell & T. H. Kearney 1950-7-5 26635 Unknown Nortonville Comment
  JEPS26391  Malacothamnus fremontii Kittie L. Fenley 1931-5-3 Contra Costa Nortonville Comment
  SD70001  Malacothamnus fremontii Darley F. Howe 1968-5-20 4515 Contra Costa Nortonville. Comment
  UC1042342  Malacothamnus fremontii Lewis S. Rose 1954-6-29 54081 Contra Costa Nortonville Comment
  UC763002  Malacothamnus fremontii R. F. Hoover 1939-5-20 4107 Contra Costa Head of Markley Canyon Comment
  UC961415  Malacothamnus fremontii John Thomas Howell and T. H. Kearney 1950-7-5 26635 Contra Costa Nortonville Comment
  JEPS36614  Malacothrix coulteri R. F. Hoover 1935-3-10 382 Contra Costa Kirker Pass Comment
  UCD86441  Melica californica Beecher Crampton 1956-5-14 3392 Contra Costa 7 miles southwest of Antioch, just east of old Nortonville. Comment
  JEPS75104  Melica torreyana W. L. Jepson 1918-6-5 7600 Contra Costa Donner Canyon; Mt. Diablo 533 Comment
  JEPS99593  Melica torreyana Mary Bowerman 1994-4-17 Contra Costa Mount Diablo, Donner Canyon by fire road near junction 1st trail to Back Canyon. Comment
  UCD88831  Melica torreyana Beecher Crampton 1956-5-14 3397 Contra Costa Oak-Bay forested; along Marsh Creek, Morgan Territory, southeast of Mt. Diablo. Comment
  JEPS68981  Mentzelia affinis Edward Lee 1935-3-29 1316 Contra Costa s watershed Kirker Creek; Nortonville 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
  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
  SBBG2832  Micranthes californica J. M. Tucker 1946-3-24 1389 Contra Costa hills between Nortonville and Somersville Comment
  UC691827  Micropus californicus var. californicus Mary L. Bowerman 1932-4-16 1335 Contra Costa near w branch Donner Canyon; Mount Diablo Comment
  UC912408  Micropus californicus var. californicus Herbert L. Mason 1929-3-29 5129 Contra Costa Marsh Creek Road 2 mi e Clayton; Marsh Creek Road Comment
  JEPS36178  Microseris douglasii subsp. douglasii W. L. Jepson 1918-6-3 7591 Contra Costa Donner Canyon Mt. Diablo Comment
  CAS-BOT-BC322766  Microseris sylvatica Alice Eastwood; John Thomas Howell 1936-4-19 2136 Contra Costa Nortonvile Comment
  JEPS36177  Microseris sylvatica W. L. Jepson 1918-6-3 7590 Contra Costa Donner Canyon Mt. Diablo 304 Comment
  SBBG6024  Microsteris gracilis J. M. Tucker 1946-3-24 1385 Contra Costa hills between Nortonville and Somersville Comment
  A367008  Mimulus aurantiacus A. Eastwood & J. T. Howell 1936-4-19 5 Unknown Nortonville Comment
  JEPS10227  Mimulus aurantiacus var. aurantiacus W. L. Jepson 1918-6-5 7605 Contra Costa Donner Canyon Mt. Diablo Comment
  RSA15451  Mimulus aurantiacus var. aurantiacus J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville Comment
  UC691569  Mimulus douglasii Mary L. Bowerman 1934-3-18 2483 Contra Costa w Russelman Park (on edge of Donner Canyon); Mount Diablo 365 Comment
  UC691740  Mimulus nasutus Mary L. Bowerman 1933-4-9 1834 Contra Costa w fork Dannor Canyon; Mount Diablo 243 Comment
  JEPS99497  Monolopia gracilens Mary Bowerman 1979-5-2 Contra Costa Mount Diablo, Old Mines Trail, Back Canyon. Comment
  JEPS68951  Monolopia major Edward Lee 1935-3-10 1280 Contra Costa Donovan Road West watershed of Kirker Creek, Kirker Pass (se-facing hillside) Comment
  UC618925  Monolopia major R. F. Hoover 1935-3-10 311 Contra Costa Kirker Pass 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
  JEPS102918  Narcissus tazetta Barbara Ertter 1998-1-25 15910 Contra Costa so of Donner Canyon trailhead (Back Canyon Rd.); Mount Diablo Comment
  UC1133134  Nassella cernua C. M. Belshaw 1936-5-9 2083 Contra Costa 1/2 mi n Nortonville (Plot 14); Mt. Diablo Comment
  UCD36916  Nassella pulchra Beecher Crampton 1956-5-14 3388 Contra Costa 6.7 miles southwest of city of Antioch, along ridge between old coal mining towns of Somersville and Nortonville. Comment
  UCD36922  Nassella pulchra Beecher Crampton 1956-5-14 3403 Contra Costa Southeastern Mount Diablo, headwaters of Marsh Creek. 640 Comment
  UCD87464  Nassella pulchra Beecher Crampton 1956-5-14 3388 Contra Costa 6.7 miles southwest of city of Antioch, along ridge between old coal mining towns of Somersville and Nortonville. Comment
  UCD87465  Nassella pulchra Beecher Crampton 1956-5-14 3403 Contra Costa Southeastern Mount Diablo, headwaters of Marsh Creek. 640 Comment
  UC23481  Navarretia cotulifolia William H. Brewer 1862-5-19 1110 Contra Costa n of Kirker Pass Comment
  UC30207  Navarretia cotulifolia W. H. Brewer 1862-5-19 1110 Contra Costa n of Kirker's Pass Comment
  JEPS70391  Navarretia mellita Mary L. Bowerman 1931-6-2 910 Contra Costa Gregory Ranch Road Mount Diablo Comment
  UC691606  Navarretia mellita Mary L. Bowerman 1931-6-2 910 Contra Costa Gregory Ranch Road Mount Diablo Comment
  UC23802  Navarretia pubescens W. H. Brewer 1862-5-19 1113 Contra Costa n of Kirkers Pass Comment
  UC30206  Navarretia pubescens W. H. Brewer 1862-5-19 1113 Contra Costa n of Kirkers Pass Comment
  UC30208  Navarretia pubescens W. H. Brewer 1862-5-15 1096 Contra Costa Kirker's Pass Comment
  PASA2110  Nemophila heterophylla Annetta Carter 1929-3-31 Contra Costa near Clayton Comment
  UC592192  Nemophila heterophylla H. L. Mason 1929-3-15 5052 Contra Costa Nortonville; on grassy hillslopes Comment
  UC691705  Nemophila heterophylla Mary L. Bowerman 1933-4-9 1838 Contra Costa w fork , Donner Canyon, w fork (Donner Canyon; Mount Diablo) 243 Comment
  UC596370  Nemophila pedunculata R. F. Hoover 1938-3-5 2816 Contra Costa mouth of Kirker Creek Canyon Comment
  UC691711  Nemophila pedunculata Mary L. Bowerman 1933-4-9 1831 Contra Costa Donner Canyon Mount Diablo, , w fork (w fork, Mount Diablo) 243 Comment
  UC767551  Nemophila pedunculata R. F. Hoover 1938-3-5 2816 Contra Costa mouth of Kirker Creek Canyon Comment
  UC1125161  Nicotiana glauca G. T. Nordstrom 1937-10-28 1402 Contra Costa 1.4 mi n Somersville; Mt. Diablo Quad. 91 Comment
  UC27878  Orobanche fasciculata W. H. Brewer 1862-5-10 1064 Contra Costa Low Hills near Kirker's Pass. Comment
  UC691505  Orobanche fasciculata Mary L. Bowerman 1935-5-16 2995 Contra Costa Mount Diablo. Russelman Park, just south of the north boundary of section 25 (east of gate). Comment
  SEINET3821123 Image available Orthocarpus erianthus Lewis S. Rose 1932-3-26 32115 Contra Costa Open hillsides, Nortonville. Comment
  UC1070121  Packera breweri C. M. Belshaw 1936-5-15 2129 Contra Costa Stewartsville Mt. Diablo Quad. 228 Comment
  JEPS103101  Papaver californicum Mary L. Bowerman 1978-5-14 Contra Costa E face of Eagle Peak, ravine toward Twin Peaks from Back Creek Mount Diablo Comment
  JEPS77535  Papaver californicum Margaret Ely 1978-5-3 Contra Costa w of Donner Canyon (toward Twin Peaks from Back Creek, n side of Mount Diablo); Mount Diablo 304 Comment
  UC1111579  Parietaria hespera var. californica Herbert L. Mason 1929-5-5 5260 Contra Costa Nortonville Comment
  JEPS10367  Pedicularis densiflora W. L. Jepson 1918-6-3 7584 Contra Costa Donner Canyon; Mount Diablo 609 Comment
  UC1125723  Pedicularis densiflora R. C. Wilson 1935-2-27 115 Contra Costa 1/2 mi s of Somersville 365 Comment
  JEPS79489  Pellaea andromedifolia Edward Lee with Annetta Carter 1936-1-12 1708 Contra Costa canyon immediately s of Nortonville Comment
  JEPS15174  Penstemon centranthifolius C. M. Belshaw 1936-5-9 2081 Contra Costa near Plot 14 (Nortonville); Mt. Diablo Quad., Nortonville 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
  JEPS7568  Penstemon heterophyllus var. heterophyllus E. Ferguson 1919-1 Contra Costa Donner Canyon Mt. Diablo, Donner Canyon Comment
  CAS-BOT-BC328000  Pentachaeta alsinoides Alice Eastwood; John Thomas Howell 1936-4-19 2138 Contra Costa Nortonville Comment
  RSA93278  Pentachaeta alsinoides Alice Eastwood, J. T. Howell 1936-4-19 2138 Contra Costa Nortonville. Comment
  RSA93286  Pentachaeta exilis Alice Eastwood, J. T. Howell 1936-4-19 2137 Contra Costa Nortonville. Comment
  UC697211  Pentachaeta exilis Mary L. Bowerman 1932-3-23 1132 Contra Costa grassy flat e of and overlooking Donner Canyon; Mount Diablo 304 Comment
  JEPS68958  Phacelia ciliata var. ciliata Edward Lee 1935-3-10 1290 Contra Costa Kirker Pass, Donovan Road, west watershed of Kirker's Creek Kirker Pass; , Donovan Road Comment
  UC35531  Phacelia ciliata var. ciliata Chesnut and Drew 1889-4-8 Contra Costa Summerville Comment
  UC762423  Phacelia distans R. F. Hoover 1938-3-25 2893 Contra Costa Markley Canyon Comment
  UC691717  Phacelia rattanii Mary L. Bowerman 1933-6-21 2331 a Contra Costa Donner Canyon Mount Diablo (by stream) Comment
  JEPS68952  Phacelia tanacetifolia Edward Lee 1935-3-10 1281 Contra Costa Kirker Pass, Donovan Rd. (w. watershed of Kirker Creek) 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
  UC35529  Phacelia tanacetifolia Chesnut and Drew 1889-4-17 Contra Costa Summerville Comment
  JEPS70601  Phalaris minor W. L. Jepson 1918-6-5 7595 Contra Costa Donner Canyon Mt. Diablo (Mt. Diablo); vicinity of San Francisco Bay, Mt. Diablo 228 Comment
  JEPS99588  Phalaris paradoxa Mary Bowerman 1995-7-2 Contra Costa Mount Diablo, foot [trail] from Back Canyon to Donner Canyon. Comment
  PASA2099  Pholistoma membranaceum Annetta Carter 1929-3-31 Contra Costa near Clayton Comment
  RSA459276  Pholistoma membranaceum H. de Forest 1930-4-6 s.n. Contra Costa S.E. of Mortonville. Small coal mine ravine. 244 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
  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
  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
  UC592179  Pholistoma membranaceum H. L. Mason 1929-3-15 5046 Contra Costa Nortonville 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
  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
  CAS-BOT-BC141254  Phoradendron serotinum subsp. tomentosum Mary L. Bowerman 1932-10-22 1636 Contra Costa Road to Quicksilver Mine: Flats at base of N Peak. Mount Diablo Comment
  UC692037  Phoradendron villosum Mary L. Bowerman 1932-10-22 1636 Contra Costa flats at base of North Peak Mt. Diablo (rd. to Quicksilver Mine) Comment
  JEPS65576  Pickeringia montana var. montana W. L. Jepson 1918-6-3 7574 Contra Costa Donner Canyon Mt. Diablo 533 Comment
  CAS-BOT-BC78542  Pinus coulteri Mrs. H. P. Bracelin 1931-4-5 210 Contra Costa Nortonville Comment
  CAS-BOT-BC78544  Pinus coulteri Elizabeth McClintock 1967-10-22 4 Contra Costa Nortonville area Comment
  JEPS46808  Pinus coulteri W. L. Jepson 1931-4-5 15726 Contra Costa Nortonville Comment
  JEPS46810  Pinus coulteri W. L. Jepson 1931-4-5 15726 Contra Costa Nortonville Comment
  JEPS47873  Pinus coulteri W. L. Jepson 1931-4-5 15726 Contra Costa low ridges s Nortonville 457 Comment
  RSA32648  Pinus coulteri C. B. Wolf, Allen L. Chickering, H. L. Mason 1943-2-28 11442 Contra Costa 1 mile SW of the old coal mining settlement of Nortonville at the Northern base of Mt. Diablo hills. 305 Comment
  UC1076351  Pinus coulteri Herbert L. Mason 1929-10-8 5480 Contra Costa Nortonville Comment
  UC1134077  Pinus coulteri R. C. Wilson 1935-2-26 101 Contra Costa 1 mi sw Nortonville; Mt. Diablo Quadrangle Comment
  UC440232  Pinus coulteri Mrs. H. P. Bracelin 1931-3-22 179 Contra Costa Nortonville Comment
  UC440233  Pinus coulteri Mrs. H. P. Bracelin 1931-3-22 179 Contra Costa Nortonville Comment
  UCR143277  Pinus coulteri C. B. Wolf, A. L. Chickering, H. L. Mason 1943-2-28 11442 Contra Costa Central Coast Range, 1 mile SW of old coal mining settlement of Nortonville at northern base of Mt. Diablo hills 427 Comment
  JEPS48206  Pinus sabiniana W. L. Jepson 1931-4-5 15727 Contra Costa Nortonville Comment
  UC1076352  Pinus sabiniana Herbert L. Mason 1929-10-8 5481 Contra Costa Nortonville Comment
  SEINET3292812 Image available Plagiobothrys Lewis S. Rose 1933-3-29 33044 Contra Costa Nortonville, Hills Comment
  JEPS68955  Plagiobothrys acanthocarpus Edward Lee 1935-3-10 1287 Contra Costa Kirker Pass, Donovan Road, w watershed of Kirker Creek Kirker Pass; , Donovan 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
  SEINET3854794 Image available Plantago bigelovii Lewis S. Rose 1933-3-29 33040 Contra Costa Nortonville. Comment
  JEPS37916  Plantago elongata J. T. Howell 1933-3-29 10897 Contra Costa Nortonville Comment
  UC1745802  Plantago elongata Annetta M. Carter 1933-4-9 291 Contra Costa About 2 mi. SW of Nortonville. Comment
  UC1745803  Plantago elongata Annetta M. Carter 1934-3-30 454 Contra Costa Donovan Rd. to Pittsburgh, about 2 mi. SW of Nortonville. Comment
  UC1745837  Plantago elongata Annetta M. Carter 1935-3-10 752 Contra Costa Kirker Pass, Donovan Rd. to Pittsburg. Comment
  UC723789  Plantago elongata Joseph Andorfer Ewan 1935-3-10 9130 Contra Costa Donovan road, Kirker Pass Kirker Pass Comment
  JEPS68980  Plantago erecta Edward Lee 1935-3-29 1315 Contra Costa Nortonville, s watershed of Kirker Pass Kirker Pass, Nortonville Comment
  PASA26  Plantago erecta Annetta Carter 1929-3-31 Contra Costa Near Clayton Comment
  CDA37397  Plantago major D. G. Kelch, Mike Perlmutter 2011-9-23 11 .761 Contra Costa Antioch. Dow Wetlands. Comment
  PASA293  Plectritis ciliosa Annetta Carter 1929-3-31 Contra Costa Near Clayton Comment
  JEPS5147  Plectritis ciliosa subsp. ciliosa Mary L. Bowerman 1933-4-9 1835 Contra Costa Mount Diablo, w fork of Donner Canyon Donner Canyon; Mount Diablo, Donner Canyon 243 Comment
  UC691525  Plectritis ciliosa subsp. ciliosa Mary L. Bowerman 1933-4-9 1835 Contra Costa w fork of Donner Canyon, Mount Diablo Donner Canyon; Mount Diablo, Donner Canyon 243 Comment
  JEPS12782  Plectritis macrocera Rimo Bacigalupi with G. T. Robbins 1955-5-4 4975 Contra Costa s of and above Nortonville ((site)) 304 Comment
  PASA292  Plectritis macrocera Annetta Carter 1929-3-31 Contra Costa Near Clayton Comment
  CAS-BOT-BC255597  Poa annua J. H. Thomas 1953-2-1 2722 Santa Cruz About 0.5 mile inland from Sea Cliff Beach State Park which is between Santa Cruz and Wastonville 60 Comment
  UCD91103  Poa howellii Beecher Crampton 1956-5-14 3396 Contra Costa along Marsh Creek, Morgan Territory, southeast of Mt. Diablo. Comment
  POM301052  Poa secunda Mary L. Bowerman 1935-5-18 3031 Contra Costa Meridian Peak north of the summit parking area 1067 Comment
  UCD36915  Poa secunda subsp. secunda Beecher Crampton 1956-5-14 3387 Contra Costa 6.7 miles SW of Antioch, along ridge between old coal mining towns of Somersville and Nortonville. Comment
Read comments
Jul 1 2011
  UCD90795  Poa secunda subsp. secunda Beecher Crampton 1956-5-14 3387 Contra Costa 6.7 miles SW of Antioch, between old coal mining towns of Somersville and Nortonville. Comment
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Jul 1 2011
  JEPS79492  Polypodium calirhiza Edward Lee with Annetta Carter 1936-1-12 1709 Contra Costa canyon immediately s of Nortonville 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
  UC691205  Polypogon monspeliensis Mary L. Bowerman 1933-6-21 2338 Contra Costa Donner Canyon Mount Diablo; , Donner Canyon 335 Comment
  UC579898  Populus fremontii subsp. fremontii Annetta Carter 1934-3-30 466 Contra Costa Nortonville 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
  UC12723  Prunus virginiana var. demissa W. H. Brewer 1862-5-10 1066 Contra Costa near Kirker's Pass Comment
  SBBG103996  Pseudognaphalium microcephalum W. Knight, I. Knight 1977-7-25 Contra Costa Black Diamond Mines Regional Reserve, Nortonville town site 167 Comment
  RSA77085  Ptelea baldwinii subsp. crenulata Alice Eastwood, John T. Howell 1936-4-19 2134 Contra Costa Nortonville. Comment
Read comments
Aug 27 2011
  A347930  Ptelea crenulata A. Eastwood & J. T. Howell 1936-4-19 2134 Unknown Nortonville Comment
  CAS-BOT-BC148630  Ptelea crenulata Alice Eastwood; John Thomas Howell 1936-4-19 2134 Contra Costa Nortonville Comment
  CAS-BOT-BC148639  Ptelea crenulata W. L. Jepson 1918-6-5 7603 a Contra Costa Mt. Diablo, Donner Canyon Comment
  GH347958  Ptelea crenulata H. L. Mason 1928-4-1 4270 Unknown Canyon back of Antioch hills north of Mount Diablo Comment
  JEPS40170  Ptelea crenulata W. L. Jepson 1931-4-5 15721 Contra Costa near Nortonville Comment
  JEPS40173  Ptelea crenulata W. L. Jepson 1918-6-5 7603 a Contra Costa Donner Canyon; Mt. Diablo Comment
  SD70002  Ptelea crenulata Darley Howe 1968-5-20 Contra Costa Nortonville Comment
  SDSU9372  Ptelea crenulata D. F. Howe 1968-5-20 4516 Contra Costa Nortonville. Comment
  UC1177068  Ptelea crenulata Joanne Taylor 1941-7-18 22 Contra Costa hills by Nortonville 213 Comment
  UC1602319  Ptelea crenulata H. S. Yates 1935-7-13 5340 Contra Costa 0.5 mi sw Nortonville; Mt. Diablo Quad. 365 Comment
  UC30132  Ptelea crenulata W. C. Blasdale 1893-5-13 Contra Costa Summerville Comment
  UC34836  Ptelea crenulata Chesnut and Drew 1889-4-17 Contra Costa Summerville Comment
  UC571100  Ptelea crenulata H. L. Mason 1928-4-1 4273 Contra Costa hills n Mount Diablo (canyon back of Pittsburg) Comment
  UC571101  Ptelea crenulata H. L. Mason 1928-4-1 4270 Contra Costa hills n Mount Diablo (canyon back of Antioch hills) Comment
  UC571102  Ptelea crenulata H. L. Mason 1928-4-1 4269 Contra Costa n of Mt. Diablo (canyon back of Antioch hills) Comment
  UC583288  Ptelea crenulata Alice Eastwood and John Thomas Howell 1936-4-19 2134 Contra Costa Nortonville Comment
  UCR17982  Ptelea crenulata Dr. H. de Forest 1930-4-6 s.n. Contra Costa San Francisco Bay Region, SE of Nortonville, SW of Antioch, east of Concord 274 Comment
  UC692211  Pterostegia drymarioides Mary L. Bowerman 1933-4-9 1833 Contra Costa w. fork Donner Canyon; Mt. Diablo 243 Comment
  CAS-BOT-BC45655  Quercus agrifolia John Thomas Howell 1950-7-5 26638 Contra Costa Nortonville Comment
  CAS-BOT-BC45656  Quercus agrifolia John Thomas Howell 1950-7-5 26638 Contra Costa Nortonville Comment
  GH356954  Quercus agrifolia J. T. Howell 1950-7-5 26638 Unknown Nortonville Comment
  UC1042561  Quercus agrifolia John Thomas Howell 1950-7-5 26638 Contra Costa Nortonville Comment
  UC691324  Quercus agrifolia Mary L. Bowerman 1931-10-5 1053 Contra Costa head of Mount Diablo Creek, Marsh Creek Road Mount Diablo Comment
  UCD45129  Quercus agrifolia John Thomas Howell 1950-7-5 26638 Contra Costa Small tree, Nortonville, Contra Costa Co. 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
  UC691289  Quercus berberidifolia Mary L. Bowerman 1932-9-17 1584 Contra Costa Donner Canyon, w fork Mount Diablo 304 Comment
  UC691295  Quercus berberidifolia Mary L. Bowerman 1933-6-21 2341 Contra Costa Median Ridge (Donner Canyon) Mount Diablo Comment
  CAS-BOT-BC86123  Quercus dumosa Mary L. Bowerman 1932-9-17 1584 Contra Costa Mount Diablo. Donner Canyon, west fork: Bank between forks 304 Comment
  CAS-BOT-BC79606  Quercus durata Mary L. Bowerman 1932-10-16 1632 Contra Costa Mount Diablo. Donner Canyon Trail Comment
  CAS-BOT-BC79607  Quercus durata Mary L. Bowerman 1932-10-16 1632 Contra Costa Mount Diablo. Donner Canyon Trail Comment
  POM301005  Quercus durata Mary L. Bowerman 1932-10-16 1632 Contra Costa Donner Canyon Trail. Comment
  CAS-BOT-BC104707  Quercus wislizeni John Thomas Howell 1950-6-5 26637 Contra Costa Nortonville Comment
  JEPS37842  Quercus wislizeni W. L. Jepson 1923-6-10 9983 Contra Costa near divide from Clayton (Marsh Creek); Mt. Diablo, Marsh Creek Comment
  POM301008  Quercus wislizeni Mary L. Bowerman 1934-3-18 2480 Contra Costa Russelmann Park; end of road Comment
Read comments
Aug 11 2011
  UC691296  Quercus wislizeni Mary L. Bowerman 1933-9-30 2449 Contra Costa Russelman Park Mount Diablo Comment
  UC691455  Rafinesquia californica Mary L. Bowerman 1935-5-16 2997 Contra Costa near the s boundary Russelman Park; Mount Diablo, Russelman Park 381 Comment
  JEPS73327  Ranunculus canus Edward Lee 1935-3-10 1284 Contra Costa Donovan Road Kirker Pass ((w watershed of Kirker Creek)) 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
  UC635097  Ranunculus canus var. canus H. L. Mason 1929-3-15 5055 Contra Costa on summit of hill east of Nortonville Comment
  UC692171  Ranunculus canus var. canus Mary L. Bowerman 1932-3-23 1127 Contra Costa East of Donner Creek; Mount Diablo Comment
  UC692189  Ranunculus canus var. canus Mary L. Bowerman 1932-3-23 1127 Contra Costa East of Donner Creek; Mount Diablo Comment
  UC692190  Ranunculus canus var. canus Mary L. Bowerman 1932-3-23 1127 Contra Costa East of Donner Creek; Mount Diablo Comment
  UC692126  Ranunculus hebecarpus Mary L. Bowerman 1933-4-9 1832 Contra Costa Donner Canyon Mount Diablo (w fork, by stream (where large fork to e)) 243 Comment
  JEPS112941  Ranunculus lobbii Dean W. Taylor 2001-3-16 17610 Contra Costa eastern flank Mt. Diablo, Mount Diablo State Park, along Olympic Trail (fire road) about 0.25 road miles W from Marsh Creek Road (ca. 5 air miles South from Clayton) 298 Comment
  JEPS113007  Ranunculus lobbii Dean W. Taylor 2001-3-16 17610 Contra Costa eastern flank Mt. Diablo, Mount Diablo State Park, along Olympic Trail (fire road) about 0.25 road miles W from Marsh Creek Road (ca. 5 air miles South from Clayton) 298 Comment
  JEPS54990  Ranunculus muricatus W. L. Jepson 1918-6-5 7593 Contra Costa Donner Canyon Mt. Diablo Comment
  PASA2644  Ranunculus occidentalis Annetta Carter 1929-3-31 140 Contra Costa Near Clayton Comment
  CAS-BOT-BC74357  Raphanus sativus J. H. Thomas 1953-2-1 2723 Santa Cruz About 0.5 mile inland from Sea Cliff Beach State Park which is between Santa Cruz and Watsonville. 60 Comment
  UC692584  Rhamnus crocea Mary L. Bowerman 1932-9-17 1579 Contra Costa Donner Canyon, w branch Mount Diablo Comment
  GH378401  Rhamnus crocea var. ilicifolia W. L. Jepson 1920-9-6 9079 Unknown Donner Canon, Mt. Diablo Comment
  CAS-BOT-BC59896  Rhamnus ilicifolia Mary L. Bowerman 1932-9-17 1579 Contra Costa Donner Canyon, w. branch: Canyon bottom. Comment
  JEPS42023  Rhamnus ilicifolia W. L. Jepson 7583 Contra Costa Donner Canyon Mt. Diablo 609 Comment
  JEPS42024  Rhamnus ilicifolia W. L. Jepson 1920-9-6 9079 Contra Costa Donner Canyon Mt. Diablo Comment
  CAS-BOT-BC200696  Rhus aromatica Mary L. Bowerman 1933-6-21 2328 Contra Costa Donner Canyon Comment
  UC692577  Rhus trilobata Mary L. Bowerman 1933-6-21 2328 Contra Costa Donner Canyon; Mount Diablo Comment
  A380374  Ribes malvaceum A. Eastwood & J. T. Howell 1936-4-19 2140 Unknown Nortonville Comment
  CAS-BOT-BC168922  Ribes malvaceum Alice Eastwood; John Thomas Howell 1936-4-19 2140 Contra Costa Nortonville Comment
  CAS-BOT-BC168923  Ribes malvaceum Alice Eastwood; John Thomas Howell 1936-4-19 2140 Contra Costa Nortonville Comment
  RSA0021636  Ribes malvaceum Alice Eastwood, J. T. Howell 1936-4-19 2140 Contra Costa Nortonville. Comment
  SBBG26906  Ribes malvaceum A. Eastwood, J. T. Howell 1936-4-19 Contra Costa Nortonville Comment
  UC583115  Ribes malvaceum Alice Eastwood, John Thomas Howell 1936-4-19 2140 Contra Costa Nortonville Comment
  UC630419  Rosa californica Paule Guiguet and Annetta Carter 1939-8-13 1450 Contra Costa se Clayton; Mount Diablo drainage, Donner Creek 152 Comment
  UC691161  Rosa californica Mary L. Bowerman 1936-9-10 3545 Contra Costa dry streambed Mount Diablo, Donner Canyon 213 Comment
  UC691164  Rubus discolor Mary L. Bowerman 1942-10-4 3853 Contra Costa Russelman Park road Mount Diablo Comment
  GH346275  Rubus ursinus W. H. Brewer 1860-1 1107 Unknown N. of Diablo Comment
  UC12996  Rubus ursinus W. H. Brewer 1862-5-17 1107 Contra Costa Canyon n Monte Diablo; Canyon n of Monte Diablo Comment
  UC692208  Rumex conglomeratus Mary L. Bowerman 1935-5-30 3083 Contra Costa Donner Canyon stream Mount Diablo 152 Comment
  UC692169  Rumex crispus Mary L. Bowerman 1935-5-30 3082 Contra Costa Donner Canyon stream Mount Diablo 152 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
  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
  OBI78191  Rupertia physodes Joseph Andorfer Ewan 1934-4-8 8752 Contra Costa S Fk. Marsh Creek, Mt. Diablo 244 Comment
  UC1129908  Rupertia physodes C. M. Belshaw 1936-5-13 2116 Contra Costa Marsh Ck.-Livermore Road 1/2 mi nw Summit; Mt. Diablo Quadrangle Comment
  JEPS99564  Sagina apetala Mary Bowerman 1978-4-17 Contra Costa Mount Diablo, Back Canyon 228 Comment
  POM300631  Salix exigua Mary L. Bowerman 1935-5-30 3081 Contra Costa Mt. Diablo. By Donner Canyon stream. 152 Comment
  UC691921  Salix exigua var. hindsiana Mary L. Bowerman 1935-5-30 3081 Contra Costa by Donner Canyon stream Donner Canyon; Mt. Diablo 152 Comment
  UC691958  Salix exigua var. hindsiana Mary L. Bowerman 1935-5-30 3080 Contra Costa by Donner Canyon stream Donner Canyon; Mt. Diablo, Donner Canyon 152 Comment
  CAS-BOT-BC104084  Salix hindsiana Mary L. Bowerman 1935-5-30 3081 Contra Costa By Donner Canyon stream 152 Comment
  CAS-BOT-BC104086  Salix hindsiana Mary L. Bowerman 1935-5-30 3080 Contra Costa By Donner Canyon stream 152 Comment
  CAS-BOT-BC104087  Salix hindsiana Mary L. Bowerman 1935-5-30 3081 Contra Costa By Donner Canyon stream 152 Comment
  UC692054  Salix laevigata Mary L. Bowerman 1935-5-30 3085 Contra Costa by Donner Canyon stream Mt. Diablo 161 Comment
  POM300610  Salix lasiolepis Mary L. Bowerman 1933-4-9 1830 Contra Costa Donner Canyon, W fork. Below Twin Peaks. Mt. Diablo. Comment
  UC504068  Salix lasiolepis Lee Bonar 1933-4-17 Contra Costa near Nortonville (hills e of Pittsburg) Comment
  UC692062  Salix lasiolepis Mary L. Bowerman 1933-2-23 1721 Contra Costa Donner Canyon Mount Diablo (w fork toward mouth, by streambed) Comment
  UC692066  Salix lasiolepis Mary L. Bowerman 1933-4-9 1830 Contra Costa streambed below Twin Peaks (w fork of canyon); Mount Diablo, Donner Canyon Comment
  UC692067  Salix lasiolepis Mary L. Bowerman 1933-4-9 1830 Contra Costa streambed below Twin Peaks (w fork of canyon); Mount Diablo, Donner Canyon Comment
  CAS-BOT-BC129597  Salix lasiolepis var. lasiolepis Mary L. Bowerman 1933-4-9 1830 Contra Costa Donner Canyon, west fork: stream-bed, below Twin Peaks - Mount Diablo Comment
  CAS-BOT-BC129599  Salix lasiolepis var. lasiolepis Mary L. Bowerman 1933-4-9 1830 Contra Costa Donner Canyon, west fork; stream-bed below Twin Peaks - Mount Diablo Comment
  RSA15471  Salvia mellifera Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville. Comment
  RSA752147  Salvia mellifera Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville. Comment
  UC1124825  Salvia mellifera R. C. Wilson 1935-2-26 106 Contra Costa Mt. Diablo; Mt. Diablo Quad. 426 Comment
  UC32598  Salvia mellifera Chesnut and Drew 1889-4-16 Contra Costa Summerville Comment
  CAS-BOT-BC223247  Sanicula bipinnata Alice Eastwood; John Thomas Howell 1936-4-19 s.n. Contra Costa Nortonville Comment
  JEPS12783  Sanicula bipinnata Rimo Bacigalupi with G. T. Robbins 1955-5-4 4976 Contra Costa s of and above Nortonville (site) 304 Comment
  POM224440  Sanicula bipinnata Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville. Comment
  UC566823  Sanicula tuberosa H. L. Mason 1929-3-15 5049 Contra Costa Nortonville Comment
  UC766927  Sanicula tuberosa R. F. Hoover 1935-3-10 301 Contra Costa Nortonville Comment
  JEPS68967  Saxifraga californica Edward Lee 1935-3-10 1300 Contra Costa s watershed of Kirker Creek (Nortonville); , Kirker Creek Comment
  UC692475  Saxifraga californica Mary L. Bowerman 1933-4-9 1837 Contra Costa w fork Donner Canyon; Mount Diablo, Donner Canyon 243 Comment
  SEINET3819166 Image available Saxifraga virginiensis var. californica Lewis S. Rose 1932-3-26 32108 Contra Costa Nortonville. Comment
  UC692194  Scirpus microcarpus Mary L. Bowerman 1942-10-4 3851 Contra Costa Mount Diablo Mount Diablo (Russelman Park Road) 243 Comment
  UC584351  Scribneria bolanderi G. L. Stebbins Jr. 1937-5-1 2112 Contra Costa 1 mi s of Summerfield (Summerfield=Somersville, at the head of Walker Canyon; due s of Antioch) 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
  CDA37401  Sesbania punicea D. G. Kelch, Mike Perlmutter 2011-9-23 11 .764 Contra Costa Antioch. Dow Wetlands. Comment
  CDA37437  Sesbania punicea D. G. Kelch, Mike Perlmutter 2011-9-23 11 .764 Contra Costa Antioch. Dow Wetlands. Comment
  SJSU10109  Silene gallica R. L. Fisher 1958-5-10 Contra Costa Nortonville near Clayton Comment
  JEPS68973  Sinapis arvensis Edward Lee 1972-3-29 1307 Contra Costa 1.6 mi. e. Clayton (n. of Mt. Diablo) Comment
  UC691256  Sisymbrium officinale Mary L. Bowerman 1935-5-16 2987 Contra Costa Mount Diablo, Russelman Park Russelman Park; Mount Diablo, Russelman Park 381 Comment
  CDA37907  Solanum americanum D. G. Kelch, Mike Perlmutter 2011-9-23 11 .762 Contra Costa Antioch. Dow Wetlands. Comment
  JEPS99576  Solanum umbelliferum Mary Bowerman 1975-5-11 Contra Costa Mount Diablo, Back Creek. Comment
  JEPS99577  Solanum umbelliferum Mary Bowerman 1975-5-11 Contra Costa Mount Diablo, Back Creek. Comment
  NY853874  Solanum umbelliferum M. L. Bowerman 1975-5-11 s.n. Contra Costa Mount Diablo. Back Creek. Comment
  UCD38575  Solanum umbelliferum Beecher Crampton 1956-5-14 3398 Contra Costa Headwaters of Marsh Creek, southeastern of Mt. Diablo. 640 Comment
  UCR142470  Solanum umbelliferum Dr. H. de Forest 1930-4-6 s.n. Contra Costa San Francisco Bay Region, SE of Nortonville, SW of Antioch, east of Concord 274 Comment
  UCR263550  Spergularia rubra Barbara Ertter, D. H. Norris 1999-11-14 16852 Contra Costa San Francisco Bay Region, Black Diamond Mines Regional Preserve, south of parking area for Somersville townsite 223 Comment
  JEPS68979  Stellaria nitens Edward Lee 1935-3-29 1313 Contra Costa Nortonville Kirker Creek (s watershed of Kirker Creek) Comment
  JEPS99599  Stellaria nitens Mary Bowerman 1978-4-19 Contra Costa Mount Diablo, Back Canyon Comment
  JEPS51558  Stylomecon heterophylla W. L. Jepson 1918-6-3 7589 Contra Costa Donner Canyon Mt. Diablo; , Donner Canyon 685 Comment
  JEPS77536  Stylomecon heterophylla Margaret Ely 1978-5-3 Contra Costa n side of Mount Diablo, along Back Creek Back Creek; Mount Diablo, Back Creek 304 Comment
  UC635478  Stylomecon heterophylla H. L. Mason 1928-4-1 4271 Contra Costa hills n Mount Diablo (canyon back of Pittsburg); hills n of Mount Diablo Comment
  UC692141  Thalictrum fendleri var. polycarpum Mary L. Bowerman 1931-4-5 673 Contra Costa by road to Gregory Ranch Mount Diablo Comment
  UC692142  Thalictrum fendleri var. polycarpum Mary L. Bowerman 1931-4-5 672 Contra Costa by road to Gregory Ranch Mount Diablo Comment
  SBBG2605  Thysanocarpus curvipes J. M. Tucker 1946-3-24 1388 Contra Costa hills between Nortonville and Somersville Comment
  UC14311  Thysanocarpus curvipes Chestnut and Drew 1889-4-17 Contra Costa Summerville Comment
  UC691086  Thysanocarpus curvipes Mary L. Bowerman 1935-5-16 2988 Contra Costa Russelman Park Mount Diablo (at end of road) Comment
  UC691143  Thysanocarpus curvipes Mary L. Bowerman 1933-4-9 1842 Contra Costa w fork Donner Canyon Mount Diablo (by trail, 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
  JEPS63916  Toxicodendron diversilobum W. L. Jepson 1931-4-5 15716 Contra Costa Nortonville n.e. Contra Costa Co., Nortonville Comment
  UC1130477  Toxicodendron diversilobum R. C. Wilson 1935-2-26 107 Contra Costa 1 mi. s.w. Nortonville; Mt. Diablo Quad. Comment
  JEPS68974  Trifolium albopurpureum var. dichotomum Edward Lee 1935-3-29 1308 Contra Costa e Kirker Pass (Donovan Rd, (w watershed of Kirker Creek)) Comment
  UC16500  Trifolium albopurpureum var. dichotomum W. H. Brewer 1862-5-16 1114 Contra Costa n Kirker's Pass Comment
  RSA91071  Trifolium albopurpureum var. olivaceum Alice Eastwood, John T. Howell 1936-4-19 2132 Contra Costa Nortonville. Comment
  UC16604  Trifolium albopurpureum var. olivaceum W. H. Brewer 1862-5-19 1111 Contra Costa n Kirker Pass Comment
  UC692247  Trifolium bifidum var. decipiens Mary L. Bowerman 1931-4-5 681 Contra Costa s Russelman Park; Mount Diablo 381 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
  JEPS68976  Trifolium depauperatum var. truncatum Edward Lee 1935-3-29 1310 Contra Costa e Kirker Pass (Donovan Rd, w of Kirker watershed) Comment
  JEPS73328  Trifolium fucatum Edward Lee 1935-3-29 1311 Contra Costa e Kirker Pass (Donovan Rd, w watershed of Kirker Creek) Comment
  JEPS125941  Trifolium glomeratum D. W. Taylor 2001-4-26 17628 Contra Costa Orinda; hill slopes ca 0.3 air miles E of the junction of Bear Creek Road and Camino Pablo Comment
  UC16557  Trifolium gracilentum W. H. Brewer 1862-5-19 1116 Contra Costa n Kirker's Pass Comment
  UC692670  Trifolium microdon Mary L. Bowerman 1935-5-16 2987 Contra Costa Russelman Park Mount Diablo (at end of road) 381 Comment
  UC692246  Trifolium oliganthum Mary L. Bowerman 1931-4-5 680 Contra Costa s Russelman Park; Mount Diablo 381 Comment
  UC1130132  Trifolium willdenovii C. M. Belshaw 1936-4-8 2071 Contra Costa 2.25 mi e Clayton; Mt. Diablo quad 381 Comment
  UC725897  Trifolium willdenovii A. A. Heller 1938-4-9 15017 Contra Costa 3 mi sw Antioch (from type region) 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
  JEPS68957  Triphysaria eriantha subsp. eriantha Edward Lee 1935-3-10 1289 Contra Costa Kirker Pass, Donovan Road, west Watershed of Kirker Creek Kirker Pass; , Donovan Road Comment
  UC1301191  Triphysaria eriantha subsp. eriantha Helen K. Sharsmith 1963-4-7 5288 Contra Costa e side Kirker Pass road w Antioch (San Francisco Bay Region); , Kirker Pass Road 152 Comment
  UC27186  Triphysaria eriantha subsp. eriantha J. Burtt Davy 1897-3-29 3019 Contra Costa near Black Diamond Comment
  JEPS58065  Triteleia laxa W. L. Jepson 1918-6-3 7569 Contra Costa Donner Canyon Mt. Diablo 304 Comment
  UC1241758  Typha domingensis Malcolm A. Nobs 1950-8-20 Contra Costa Nortonville Comment
  JEPS35668  Uropappus lindleyi W. L. Jepson 1931-4-5 15717 Contra Costa Nortonville 457 Comment
  JEPS36176  Uropappus lindleyi W. L. Jepson 1918-6-3 7578 Contra Costa Donner Canyon Mt. Diablo 533 Comment
  UC691469  Uropappus lindleyi Mary L. Bowerman 1931-4-5 682 Contra Costa s Russelman Park (Mount Diablo); Mount Diablo 381 Comment
  JEPS99510  Vicia villosa subsp. varia Mary Bowerman 1994-4-17 Contra Costa Mount Diablo. Path (graveled road) from end of Regency Drive, Clayton. Entry to Donner Canyon. Comment
  CAS-BOT-BC183075  Vulpia microstachys var. ciliata Catherine Best 1994-4-29 1452 Contra Costa Donner Canyon on the East side of Mt. Diablo Comment
  UCD93807  Vulpia microstachys var. ciliata Beecher Crampton 1956-5-14 3383 Contra Costa between the old coal mining towns of Somersville and Nortonville, 6.7 miles southwest of Antioch. Comment
  RSA758081  Vulpia microstachys var. pauciflora Barbara Ertter 1991-5-5 9779 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, ridge east of Coal Canyon 366 Comment
  UC766878  Vulpia microstachys var. pauciflora R. F. Hoover 1939-4-13 4021 Contra Costa w branch Head of Markley Canyon Comment
  UCD94498  Vulpia microstachys var. pauciflora Beecher Crampton 1956-5-14 3390 Contra Costa just east of old Nortonville, 7 miles southwest of Antioch. Comment
  UC692399  Vulpia myuros var. hirsuta Mary L. Bowerman 1931-4-5 683 Contra Costa Russelman Park; Mount Diablo Comment
  UC766812  Vulpia octoflora var. hirtella R. F. Hoover 1939-4-13 4021 a Contra Costa w branch Head of Markley Canyon Comment
  JEPS32004  Wyethia helenioides R. F. Hoover 1939-4-13 4016 Contra Costa w branch Head of Markley Canyon Comment
  UC691737  Wyethia helenioides Mary L. Bowerman 1931-6-2 913 Contra Costa Mount Diablo , Gregory Ranch Road Comment
  UC762539  Wyethia helenioides R. F. Hoover 1939-4-13 4016 Contra Costa head Markley Canyon ((w branch)); head Markley Canyon (w branch) Comment
  UC1099993  Zannichellia palustris Herbert L. Mason 1929-2-10 Contra Costa Nortonville Comment
  UC1109005  Zannichellia palustris H. L. Mason October 1929 Contra Costa Nortonville Comment
  UC765923  Zigadenus fremontii Robert F. Hoover 1939-4-13 4018 Contra Costa head (West Branch) Markley Canyon; head Markley Canyon Comment



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