Search Results — 2000 specimen records retrieved (1613 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  SBBG69882  Abronia maritima M. N. Ackley 1928-9-22 Orange Sunset Beach Comment
  POM742  Abronia villosa var. aurita C. F. Baker 1903-4-1 4125 Orange Anaheim Comment
  UCR169911  Acacia Scott D. White, Jennifer H. Jones 2005-4-26 10972 Orange Laguna Beach area., City of Laguna Beach. 549 Nyes Place. Undeveloped lot within a residential neighborhood. Proposed for new home Comment
  CDA3995  Acacia retinodes D. G. Kelch 2006-12-9 6 .554 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  CDA1045  Acacia saligna D. G. Kelch 2006-12-9 6 .533 Orange Newport Bay, Back Bay Dr. betweeen marsh and steep bluff. Comment
  IRVC8  Acer macrophyllum T. Price 1965-4-17 s.n. Orange Santa Ana Mtns: Silverao Cyn. Peninsular Ranges Comment
Read comments
Nov 15 2013
  RSA797915  Acer macrophyllum Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49825 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  SEINET3195254 Image available Acer macrophyllum P. C. Everett 1935-6-19 7239 Orange Santa Ana Mts., Trabuco Canyon,2 6/10 mi. below (W.) Summit Truck Trail 910 Comment
  RSA696762  Achillea millefolium C. H. Mueller 1932-5-30 s.n. Orange Corner Cleveland and Chapman Comment
  RSA701599  Achnatherum coronatum Rankin s.n. Orange Silverado Comment
  UCSB48115  Acmispon strigosus Roberts, Jr., Fred 1981-4-12 Orange Santa Ana Mountains; San Juan Canyon, Hwy. 74, 1.3 km. by road E San Juan Guard Station; 0.9 km. SE Juan Rancho Survey Mark 295 Comment
  SD152854  Acmispon wrangelianus Steve Boyd, Tim Ross 1992-5-20 7485 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area, western edge of the wilderness in Lucas Canyon at the Lucas Canyon Trail crossing, on hard-packed soil along trail, north side of creek just downstream from crossing 320 Comment
  RSA734663  Acourtia microcephala A. C. Sanders, Fred M. Roberts 2008-6-17 35485 Orange Lomas de Santiago, West Loma Ridge Spur Road c. 1 km east of Sheriff's Training Facility and 1.6 km SW of Irvine Lake, between hwys 241 and 261. 357 Comment
  UCD128507  Acroptilon repens P. B. Kennedy 1925-1 s.n. Orange Santa Ana. Comment
  UC1544779  Adenostoma fasciculatum D. S. Seigler and E. Rodriguez 1978-5-13 11003 Orange Trabuco Canyon Comment
  UCR230219  Adenostoma fasciculatum Dick Newell, Ed Hill 2011-3-29 102 Orange Peninsular Range; Santa Ana Mtns., 200 yards NE of old coal mine, under power lines, off Coal Rd. below intersection with Upper Blind Cyn. Rd. 482 Comment
  RSA598917  Adenostoma fasciculatum var. fasciculatum Scott D. White 1997-3-28 4848 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  UCSB48001  Adenostoma fasciculatum var. fasciculatum Roberts, Fred 1980-6-29 Orange Santa Ana Mtns., Viejo Canyon, 0.4km N Calif. Rte 74; 2.2km ENE San Juan Guard Station 341 Comment
  RSA588887  Adiantum capillus-veneris Fred M. Roberts 1990-6-4 4667 Orange Santa Ana Mts. Hall Canyon, 1.8 km NNW Mustand Spring at east edge of flying B Ranch. 421 Comment
  RSA0014998  Adiantum jordanii Fred M. Roberts 2008-5-14 6960 Orange Lomas de Santiago: Loma Ridge, upper Bee Flat Canyon below Loma Ridge Rd., 1.3 km N Bee Peak and 5.4 km NW Bolero Lookout, Irvine Ranch Conservancy. 337 Comment
  UCR215286  Adiantum jordanii Fred M. Roberts 2008-5-14 6960 Orange Lomas de Santiago, Loma Ridge, upper Bee Flat Canyon below Loma Ridge Road, 1.3 km north of Bee Peak and 5.4 km NW of Bolero Lookout. Irvine Ranch Conservancy 337 Comment
  UCR222415  Adiantum jordanii D. E. Bramlet 2008-4-1 4139 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, ridgeline in upper Hicks Canyon, 136 m south of the Haul Road 341 Comment
  UCR239501  Agave americana A. C. Sanders, Fred M. Roberts 2008-4-8 34737 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  SBBG101679  Agoseris grandiflora S. Boyd with Mistretta 1991-5-9 6198 Orange crest of range at Oak Flat, SE of Sierra Pk, just W of Riverside County line 822 Comment
  RSA697070  Agoseris grandiflora var. grandiflora Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts Comment
  RSA798099  Agrostis exarata R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49570 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  RSA773555  Agrostis pallens Fred M. Roberts 2008-6-3 7029 Orange Lomas de Santiago: Loma Ridge, East Fork Rattlesnake Canyon, ca. 2.6 km NE of Rattlesnake Reservoir spillway and 2.4 km ENE Bee Peak 235 Comment
  RSA759146  Ailanthus altissima Robert Allen, D. Taylor 2008-7-19 s.n. Orange Eastern arm of Bedford Peak, along North Main Divide Road, 2.2 road miles N of junction with Bedford Road, 5.9 miles N of junction with Maple Springs Road. 1155 Comment
  RSA689740  Albizia distachya Scott D. White, Brian Leatherman 2003-10-30 9849 Orange Foothills; Oso Parkway crossing over Chiquita Canyon. 198 Comment
  UCR149361  Albizia lophantha Scott D. White, Brian Leatherman 2003-10-30 9849 Orange Peninsular Ranges; Santa Ana Mountains region, Foothills; Oso Parkway crossing over Chiquita Canyon 229 Comment
  RSA588772  Alchemilla occidentalis Fred M. Roberts, Carol A. Roberts, D. E. Bramlet 1990-5-6 4592 Orange Santa Ana Mnts.: Chiquito Basin, San Juan Trail, c.a. 2.5 km SSE Los Pinos Peak. 915 Comment
  UC455141  Alisma plantago-aquatica I. J. Condit 1908-7-21 Orange Los Alamitos Comment
Read comments
Nov 20 2010
  IRVC26678  Allium burlewii Mark A. Elvin 2004-4-4 3215 Orange UCI Arboretum Southern Coastal 15 Comment
  UCR132990  Allium haematochiton Adrian Wolf 2000-5-4 466 Orange Santa Ana Mtns., North Ranch Policy Plan Area, ridgeline between upper Gypsum and Fremont Canyon, Main Divide Road, overlooking upper Fremont Cyn. 726 Comment
  UCSB52871  Allium haematochiton Roberts, Fred; Marsh, G. 1983-3-30 Orange UC Irvine Ecological Preserve, 0.8 km. SSW UCI campus center 60 Comment
  UCSB57138  Allium haematochiton Marsh, G.; Marsh, K. 1978-5-13 Orange Santa Ana Mts; Coal Canyon; Ridge along Main Divide Road, S portion of acreage 731 Comment
  RSA637489  Allium monticola Valerie L. Soza, LeRoy Gross 1999-6-10 509 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off Main Divide Road. 1524 Comment
  IRVC27051  Allium praecox Mark A. Elvin 2005-2-8 3987 Orange UCI Arboretum Southern Coastal 15 Comment
  UC1178464  Allophyllum glutinosum Peter Kamb 1948-6-19 1084 Orange Holy Jim Canyon Santa Ana Mts., Holy Jim Canyon 609 Comment
  SEINET2444446  Allophyllum glutinosum Steve Boyd, Tim Ross 1992-5-20 7452 Orange Southern Santa Ana Mountains. San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon along a new section of trail heading up major side canyon northward to Sitton Peak Road (7S09). 305 Comment
  UCSB52943  Allophyllum glutinosum Roberts, Fred 1983-9-26 Orange Santa Ana Mts.; Lion Canyon, Chiquito Basin Trail, 3.6 km NNE Lower San Juan Picnic Grounds; 4.0 km SSE Los Pinos Peak 820 Comment
  OBI6021  Alnus rhombifolia Carl B. Wolf 1931-3-6 1855 Orange Trabuco camp ground, Trabuco cyn, W slope of Stana Ana Mts 610 Comment
  POM177826  Alnus rhombifolia Marcus E. Jones 1930-1-26 26226 Orange Wildwood Camp, Santa Ana River. Comment
Read comments
Nov 18 2013
  RSA220966  Alnus rhombifolia E. W. Lathrop 1966-3-23 6100 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  SD127314  Alnus rhombifolia Reid Moran, Jack Reveal and Bob Smart 1975-7-18 22597 Orange Near Yaeger Mine, bottom of upper Trabuco Canyon, Santa Ana Mts. 725 Comment
  SDSU12041  Alnus rhombifolia Curtis B. Kendal 1994-5-18 18 V94D Orange South of Bell Canyon Road at the three pipe crossing, in the National Audubon Society Starr Ranch Sanctuary. 308 Comment
  UCR231346  Alnus rhombifolia A. C. Sanders, Kent Beaman 2011-9-27 39903 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail above Silverado, at major (dry) stream crossing, 3.95 km NNW (347 deg. ) of Santiago Peak 903 Comment
  SEINET10572636  Aloe Charlene A. Bennett 1976-7-21 Bennett 431 Orange Cultivated plants collected in and around the condominium pacific island Estates in laguna hills; some native shrubs, etc. 152 Comment
  UCR44898  Amaranthus albus B. G. Pitzer, L. F. LaPre 1986-10-20 0313 Orange City of Irvine, Drainage channel near intersection of Irvine Blvd. and Sand Canyon Avenue. 91 Comment
  RSA402963  Amaranthus albus Albert J. Perkins 1912-10-15 s.n. Orange Peatlands near head Newport Bay. Comment
  UCR191461  Amaranthus blitoides A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34655 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 330 Comment
  CLARK-A1528-979  Amaranthus californicus Patricia A. Andrews 1975-6-26 5930 Orange Capistrano Bay Beach 9 Comment
  RSA725586  Amaranthus deflexus Fred M. Roberts 2007-8-6 6699 Orange San Joaquin Hills: Laguna Beach, Laguna Cyn. on east side of Laguna Cyn. Rd. adj. to dog park, 1.2 km S (air) from El Toro Road and 1.8 km WSW Moulton Survey Mk. 52 Comment
  JEPS54308  Amaranthus hybridus Lawrence M. Booth 1932-7-21 1295 Orange Anaheim Creek Comment
  RSA562747  Amaranthus retroflexus Steve Boyd 1992-5-19 7443 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon from crossing the creek by Lucas Canyon Trail, downstream to confluence with Aliso Canyon. 274 Comment
  RSA614339  Amblyopappus pusillus B. Pitzer 1996-4-30 2795 Orange Crystal Cove State Park, S of City of Irvine on State Hwy 1 (Pacific Coast Hwy). Bluffs above the beach. Comment
  UC537060  Amblyopappus pusillus P. A. Munz 1934-3-26 13135 Orange dry slopes, ravine Newport Beach 15 Comment
  CAS-BOT-BC13771  Ambrosia chamissonis David D. Keck 1933-9-8 2541 Orange Sunset Beach Comment
  IRVC726  Ambrosia chamissonis D. Van Gorden 1965-4-24 Orange Huntington Beach State Park. Huntington Beach Comment
  RSA234502  Ambrosia chamissonis James Henrickson 1970-7-24 5015 Orange 3 miles NW of Huntington Beach on sandy ''Rabbit'' Island in Bolsa Chica Salt March near Inner Bolsa Bay. 1 Comment
  RSA643441  Ambrosia chamissonis R. D. Goeden, D. W. Ricker 1970-4-29 s.n. Orange Pacific Coast: Newport Beach, NW edge of town between Seashore Dr., Neptune Ave. 56th and 58th Streets. 2 Comment
  RSA643442  Ambrosia chamissonis R. D. Goeden, D. W. Ricker 1970-2-19 s.n. Orange Pacific Coast: Newport Beach, NW edge of town between Seashore Dr., Neptune Ave.. 56th and 58th Streets., 33deg. 37.2'N, 117deg. 57'W 2 Comment
  SBBG61136  Ambrosia chamissonis M. N. Ackley -Sep-1928 245 Orange Sunset Beach 8 Comment
  CAS-BOT-BC45061  Ambrosia psilostachya Ira L. Wiggins 1965-11-6 20346 Orange Roadside near well no. 14, Kraemer Oil Estates, near end of county road leading to Rancho Santa Ana. Comment
  RSA725462  Ambrosia psilostachya Fred M. Roberts 2007-8-6 6555 Orange San Joaquin Hills: Laguna Beach, Laguna Cyn. on east side of Laguna Cyn. Rd. adj. to dog park, 1.2 km S (air) from El Toro Road and 1.8 km WSW Moulton Survey Mk. 52 Comment
  RSA770  Ambrosia psilostachya J. T. Howell 1927-9-24 754 Orange Santa Ana River Bottom, Rancho Santa Ana 152 Comment
  RSA7462  Amorpha californica C. B. Wolf 1933-8-24 5380 Orange 1/2 mile below summit of Bedford Motorway, east slope of Santa Ana Mountains. 976 Comment
  SD53073  Amorpha californica Peter H. Raven 1962-5-18 17752 Orange Santa Ana Mountains, along Silverado Canyon Truck Trail 7.3 miles above Gate, on hillside 1280 Comment
  CAS-BOT-BC177252  Amorpha fruticosa Crawford; Johnston 1917-6-9 1225 Orange Santa Ana River near Corona Comment
  JEPS61147  Amsinckia intermedia Alice King 1908-1 Orange Anaheim plain Anaheim Comment
  RSA450858  Amsinckia intermedia Gordon Marsh 1978-10-19 s.n. Orange UC Irvine Ecological Preserve. 98 Comment
  UC1178238  Amsinckia intermedia Francia Chisaki 1957-4-3 928 Orange 6 mi s Irvine (just s of El Toro near top of hill on Hwy 101) Comment
  UCR102014  Amsinckia menziesii B. G. Pitzer 1997-3-25 3008 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  IRVC213  Amsinckia menziesii var. intermedia D. Frees 1965-3-27 Orange Newport Beach; East Bluffs. Southern Coastal Comment
  IRVC9355  Amsinckia menziesii var. intermedia B. T. Gittins 1963-4-21 179-A Orange Newport Back Bay. Newport Beach Comment
  RSA678449  Anagallis arvensis Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary Wallace 2001-4-4 1123 Orange Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  RSA708285  Anagallis arvensis Scott D. White, Jennifer H. Jones 2005-3-31 10858 Orange South Coast: City of Laguna Beach. 549 Nyes Place. Proposed home site on ca. 0.5 acre. 91 Comment
  RSA747628  Anagallis arvensis Fred M. Roberts 2008-5-16 6972 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  UCR96318  Anagallis arvensis B. G. Pitzer 1996-4-30 2794 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  RSA650588  Anagallis arvensis D. Geisinger, R. Miller, E. Baldwin 1959-4-14 s.n. Orange Poor Mans Weather Glass, Santa Ana Canyon. Comment
  RSA659985  Anagallis arvensis Steve Teh 1994-5-20 26 Orange Modjeska Grade rd. Fire road trail head. Comment
  UCR113625  Andropogon glomeratus H. Camp 1999-9 s.n. Orange Peninsular Range; Santa Ana Mtns., Ronald W. Caspers Wilderness Park, 12 miles east of San Juan Capistrano along San Juan Creek bed near confluence with Hot Springs Canyon 213 Comment
  JEPS12263  Anemopsis californica Alice King June, 1908 Orange Santa Ana Comment
  POM201881  Anemopsis californica L. M. Booth 1932-7-19 1280 Orange Bolsas Marsh. Comment
  RSA627755  Anemopsis californica Scott D. White 1998-5-31 6567 Orange UCI Campus; Southwest of Farm School site (now proposed as Student Rec. Ctr., 33 38.5N, 117 50 W 24 Comment
  IRVC7985  Anthemis cotula T. W. Mulroy 1973-5-31 1901 Orange near Sand Canyon Reservoir. San Joaquin Hills Comment
  UCR186365  Anthriscus caucalis Robert DeRuff 1995-4-30 483 Orange Southern Coast, Newport Beach, Newport Back Bay, at and above intersection of San Joaquin Hills Rd. and Backbay Dr. 2 Comment
  POM6365  Antirrhinum coulterianum Philip A. Munz, L. T. Street, G. Williams 1919-5-3 2623 Orange Santa Ana River Canyon. Comment
  RSA594799  Antirrhinum coulterianum Fred M. Roberts, Sandra Leatherman, Brian Leatherman 1994-4-24 4919 Orange Santa Ana Mountains: Lower Hot Springs Canyon, c.a. 1km NNW Juan Rancho Survey Mark. Comment
  UCR657  Antirrhinum coulterianum Geoffrey Matthews, Jim Hearne, Robin Maetche 1971-5-15 s.n. Orange Peninsular Range; Santa Ana Mtns., 3 mi north of Morrill Valley on Hwy 74 Comment
  UCR203910  Antirrhinum multiflorum R. E. Riefner Jr. 2008-7-21 08- 248 Orange Santa Ana Mountains, Irvine Ranch Reserve, North Irvine Ranch, middle Fremont Canyon, east slope along Black Star SCE Road 718 Comment
Read comments
Sep 5 2010
  UCR191022  Antirrhinum nuttallianum A. C. Sanders, Fred M. Roberts 2008-4-22 35012 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  UC672564  Antirrhinum nuttallianum subsp. subsessile H. L. Mason 1926-4-25 2907 Orange 5 mi s Laguna Comment
  UCR141341  Aphanisma blitoides Robert DeRuff 1991-1 422 Orange Southern Coast, Newport Beach, Newport Back Bay, east of Delhi Ditch; bluff side of the wooden horse and bike path 6 Comment
  UCR203989  Aphanisma blitoides Fred M. Roberts 2008-3-12 6736 Orange South Coast, Dana Point Headlands Center for Natural Lands Mgmt. Preserve, west side, c. 0.8 km west of Marine Institute, Dana Point Harbor 50 Comment
  RSA749299  Apiastrum angustifolium Fred M. Roberts 1999-4-21 5184 Orange Lomas de Santiago: Loma Ridge, ridges north of Dripping Springs Cyn., 1.5 km W Silverado Sch. and 4.8 km NNW Bolero Lookout. 365 Comment
  UCR191462  Apiastrum angustifolium A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34656 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 330 Comment
  IRVC17821  Apium graveolens R. Hobson 1965-4-10 Orange Santa Ana Heights, 2431 Mesa Dr. Southern Coastal Comment
  UCR100451  Apium graveolens B. G. Pitzer 1996-4-30 2771 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  RSA0002591  Apium graveolens var. graveolens F. W. Peirson 1924-5-31 4656 Orange Open Canyon, Laguna Beach. 91 Comment
  IRVC26732  Aquilegia formosa Mark A. Elvin 2004-6-18 3526 Orange UCI Arboretum Southern Coastal 15 Comment
  IRVC19395  Araujia sericifera R. L. Allen 1983-2-12 A627 Orange Fullerton; Hillcrest Park, slope bordering E Valley View Drive. Southern Coastal Comment
  UCR228889  Araujia sericifera Dick Newell, Don Millar 2011-7-19 215 Orange Peninsular Range; Santa Ana Mtns., Irvine Regional Park 181 Comment
  UCSB56518  Arbutus menziesii Meinzer, R.; Mulroy, T. 1971-4-25 Orange Upper Trabuco Canyon, Santa Ana Mts. Comment
  SD255137  Arbutus menziesii R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49826 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  IRVC26421  Arctostaphylos australis Mark A. Elvin 2004-2-22 3147 Orange UCI Arboretum Southern Coastal 15 Comment
  UCR273489  Arctostaphylos glandulosa A. C. Sanders, Glen Morrison 2016-8-4 42605 Orange Peninsular Range; Santa Ana Mountains, North Main Divide Road (Forest Rte 3S04) between Hwy 74 and Los Pinos Spring, 1.7 km NW (312 deg. ) of El Cariso Fire Station 959 Comment
  CAS-BOT-BC23104  Arctostaphylos glandulosa subsp. glandulosa John Thomas Howell 1927-6-26 2603 Orange Claymine Canyon, n. Santa Ana Mts. 457 Comment
  CAS-BOT-BC402202  Arctostaphylos glandulosa subsp. glandulosa R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49708 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA629320  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15523 Orange North of El Cariso on road to Los Pinos Pk, 3.8 km north of Hwy 74. 1000 Comment
  RSA629324  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15502 Orange Road to Blue Jay Campground, 1 km south of Hotshot Camp, north of Ortega Hwy. (Hwy. 74). 800 Comment
  SEINET10449249  Arctostaphylos otayensis James S. Miller 2001-12-15 Miller 10648 Orange Rancho Santa Ana Botanic Garden, Santa Ana, CA. Comment
Read comments
Jan 17 2020
  NY387541  Argemone munita subsp. robusta C. B. Wolf 1933-8-24 Prop. No. 1915 Orange Upper Sonoran and arid transition areas. Santa Ana Mts. Summit of Santiago Pk. 1731.3 Comment
  RSA105977  Argemone munita subsp. robusta Gerald B. Ownbey, Findley Ownbey 1954-7-2 2177 Orange Between Modjeska Peak and Santiago Peak 1524 Comment
  SEINET4002143  Argemone munita var. robusta G. B. Ownbey, F. Ownbey 1954-1 2168 Orange Between Modjesca Peak and Santiago Peak. 1524 Comment
  RSA0013950  Aristida adscensionis Fred M. Roberts 2008-4-24 6929 Orange Lomas de Santiago: Loma Ridge, lower Hicks Cyn. 350 meters east of Haul Rd., 1.9 km E Rattlesnake Cyn. Reservoir dam and 2.1 km W Bee Peak. Irvine Ranch Conservancy. 180 Comment
  UCR215299  Aristida adscensionis Fred M. Roberts 2008-4-24 6929 Orange Lomas de Santiago, Loma Ridge, lower Hicks Canyon 350 m east of Haul Rd., 1.9 km east of Rattlesnake Cyn. Reservoir dam and 2.1 km west of Bee Peak, Irvine Ranch Conservancy 180 Comment
  RSA588773  Aristida purpurea var. parishii Fred M. Roberts, Carol A. Roberts, D. Bontrager 1990-4-28 4590 Orange Rancho Mission Viejo: Christianitos Canyon, 4.0 kilometers E Playa Survey Marker; UTM Z11 37 06 600m N, 4 47 600m E. 174 Comment
  RSA703846  Aristida purpurea var. parishii D. E. Bramlet, Fred M. Roberts 2003-3-13 3336 Orange Donna O'Neill Reserve. North east ridge line 762m W of Cristianitos Rd., and 1.15 km N of the E-W Access road., 11S 04 46 955E, 37 05 838N) 198 Comment
  UCR130489  Aristida purpurea var. parishii R. E. Riefner Jr. 2000-7-7 00- 629 Orange Santa Ana Mtns., North Ranch Policy Plan Area, on ridgeline overlooking upper west fork of Fremont Canyon; east of Main Divide Road and SE from Windy Ridge cypress forest 348 Comment
  UCR130496  Aristida purpurea var. parishii R. E. Riefner Jr. 2000-8-3 00- 7012 Orange Santa Ana Mountains, North Ranch Policy Plan Area, east of Main Divide Road and Windy Ridge 535 Comment
  UCD56376  Aristida ternipes var. gentilis D. E. Bramlet; Fred Roberts 2003-3-13 3336 Orange Donna O'Neill Reserve, north east ridgeline 762 m west of Cristianitos Rd., and 1.15 km north of the E-W Access Road. 198 Comment
  RSA759263  Arnica discoidea Robt Allen, Christopher M. Barnhill 2008-5-26 s.n. Orange upper Silverado Canyon, along Maple Springs Truck Trail, 5.7 road miles up from Maple Springs forest gate, 0.8 road miles down from junction with Main Divide Truck Trail. SW end of short road spur. 1313 Comment
  RSA696761  Artemisia biennis J. Russell Bruff 1930-10-26 s.n. Orange Santa Ana River bed. Comment
  UC111237  Artemisia biennis Theodore W. Minthorn 1907-8-18 7 Orange Laguna Comment
  IRVC486  Artemisia californica A. Adams 1965-5-2 Orange Newport Beach, Corona del Mar, Little Corona Beach. Southern Coastal Comment
  RSA722100  Artemisia californica R. E. Riefner 2006-8-25 06 -410 Orange City of Dana Point, Salt Creek Beach Park, vicinity of Dana Strand Rd. and Selva Rd. 0 Comment
  SEINET227962  Artemisia californica Leila M. Shultz 1980-5-2 4040 Orange Orange County: foothills south of Diamond Bar, Chaparral. 213 Comment
  UCD129226  Artemisia californica B. Pitzer 1997-11-8 3373 Orange Crystal Cove State Park: Pelican Point Area, grassland area between Pacific Coast Hwy and the bike trail. Open areas adjacent to parking lot. 30 Comment
  RSA734898  Artemisia douglasiana A. C. Sanders, Fred M. Roberts 2008-6-17 35461 Orange Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  JEPS36975  Artemisia dracunculus John Thomas Howell 1927-9-24 3110 Orange Rancho Santa Ana Santa Ana Canon 152 Comment
  RSA748272  Artemisia dracunculus A. C. Sanders, Fred M. Roberts 2008-6-17 35514 Orange middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  RSA772  Artemisia dracunculus J. T. Howell 1927-7-17 419 Orange Between Tustin and Laguna Beach. 122 Comment
  RSA774  Artemisia dracunculus J. T. Howell 1927-9-24 752 Orange Santa Ana River Bottom, Rancho Santa Ana 152 Comment
  RSA703138  Artemisia tridentata subsp. tridentata Fred M. Roberts, Arthur Davenport 2003-9-11 6017 Orange Rancho Mission Viego: Donna O'Neill Land Conservancy, Cristianitos Cyn., 85m SSW Sycamore Gate, 35m W of Cristianitos Road. 119 Comment
  IRVC408  Arthrocnemum subterminale J. B. Anderson 1966-4-16 589 Orange Newport Beach; Corona del Mar; Buck Gully; "Little Corona Beach"; moist canyon bottom with small brooklet near stream. Southern Coastal 0 Comment
  RSA0059639  Arthrocnemum subterminale A. C. Sanders, Dan Malueg, K. D. Jones 2000-4-19 23340 Orange Bolsa Chica Lagoon, along dirt roads in oil field, east of Hwy 1, east of Bolsa Chica St. 0 Comment
  UCSB23299  Arthrocnemum subterminale Keefe, Joseph 1967-3-26 Orange Newport Bay, on Back Bay Drive, 2.0 miles northeast of junction with Jamboree Drive, Corona del Mar 3 Comment
  UCSB48033  Arundo donax Roberts, Fred 1981-9-26 Orange San Juan Capistrano; along Trabuco Creek on Camino Capistrano Rd; 0.4 km N jct Junipero Serra Rd, 0.5 km SW Bench Mark 202 66 Comment
  RSA549704  Asclepias californica Terry J. O Brien 1992-5-23 1204 Orange Cleveland National Forest, trail S of Blue Jay Campgrounds. 1037 Comment
  IRVC14869  Asclepias eriocarpa Gordon A. Marsh, Karlin G. Marsh 1976-7-8 s.n. Orange 0.1km W Casper's Park in fire break; periphery of live oak woodland. Rancho Mission Viejo Comment
  POM201840  Asclepias fascicularis L. M. Booth 1932-7-21 1291 Orange Anaheim Creek Comment
  UC537015  Asclepias fascicularis Lawrence M. Booth 1932-7-21 1291 Orange Anaheim Meadows Comment
  SEINET7113596  Asclepias fruticosa M. B. Sady 1996-6-19 s.n. Orange The University of California, Irvine Arboretum, on Campus Drive, UCI Comment
  RSA743466  Asparagus aethiopicus Fred M. Roberts, Carol A. Roberts 2008-9-28 7118 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  RSA743383  Asparagus asparagoides Fred M. Roberts 2008-5-27 7002 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  RSA741481  Asphodelus fistulosus R. E. Riefner 2008-5-30 08 -125 Orange Near City of Orange, Santiago Creek, vicinity of Jackson Ranch Rd. at Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
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Feb 28 2016
  UCR100183  Aster subulatus Scott D. White 1993-3-5 1108 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  CAS-BOT-BC180452  Astragalus brauntonii Carl B. Wolf 1936-6-22 8000 Orange Santa Ana Mts., No. slopes of Sierra Pk., Claymine Canyon truck trail to Sierra Pk. 457 Comment
  CAS-BOT-BC180489  Astragalus brauntonii Richard Snow 1957-7-25 59 -2 Orange North slopes of Sierra Peak, Claymine Canyon Truck trail to the peak, Santa Ana Mts. 457 Comment
  LA204886  Astragalus brauntonii Carl B. Wolf; 1936-6-22 8000 Orange Santa Ana Mountains, N slopes of Sierra Peak, Claymine Canyon Truck Trail to Sierra Peak 457 Comment
  UC592754  Astragalus brauntonii Carl B. Wolf 1936-6-22 8000 Orange n slopes Sierra Pk (Claymine Canyon Truck Trail to Sierra Pk); Santa Ana Mts., n slopes Sierra Pk 457 Comment
  UCR224310  Astragalus brauntonii Justin M. Wood 2010-5-12 1686 Orange Santa Ana Canyon, Santa Ana River floodplain, 0.25 mi north of Coal Canyon Wildlife Corridor, west of Green River Golf Course on bluff south of the river 122 Comment
  RSA699634  Astragalus didymocarpus Keith E. Hoffmaster 1935-3-17 s.n. Orange Near El Toro (Trabuco rd.) Comment
  RSA749637  Astragalus didymocarpus var. didymocarpus D. E. Bramlet 2008-3-31 4135 Orange 282m East Upper Hicks Haul Rd, Trib. to Limestone Cyn. 1km S of Santiago Cyn Rd. 317 Comment
  IRVC26585  Astragalus didymocarpus var. didymocarpus Karlin G. Marsh 1983-4-11 s.n. Orange Laguna Beach: Sycamore Hills; dirt road surface of central ridge line. southern coastal Comment
  UCR26993  Astragalus gambelianus E. W. Lathrop 1966-3-23 6102 Orange Santa Ana Mtns, Cleveland National Forest, Trabuco District. 4 mi. NE of Lake Irvine, Black Star Canyon Comment
  RSA797666  Astragalus trichopodus subsp. leucopsis Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49770 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA278304  Astragalus trichopodus var. lonchus C. W. Tilforth 1979-5-23 1808 Orange Mouth of Aliso Canyon, south Laguna. Comment
  SD255167  Astragalus trichopodus var. lonchus R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49770 Orange Santa Ana Mountains; Trabuco Canyon. Comment
  UCD105450  Astragalus trichopodus var. lonchus J. E. Eckert 1945-6-28 s.n. Orange location unknown. Comment
  RSA263655  Astragalus trichopodus var. trichopodus E. W. Lathrop 1977-4-13 7604 Orange Coal Canyon at base of Sierra Peak in the Santa Ana Canyon. Comment
  CDA23088  Atriplex Mark A. Elvin, D. G. Kelch 2006-12-9 5299 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  UC1980256  Atriplex R. E. Riefner Jr. 2007-10-26 07 -453 Orange City of Laguna Niguel, Laguna Niguel Regional Park, Sulphur Creek Reservoir, near La Paz Rd. and Kings Rd. Comment
  HSC101291  Atriplex amnicola R. E. Riefner, Jr. 2006-2-12 621 Orange South Coast: N end of City of San Clemente, along N-bound I-5, immediately S of Camino de Estrella exit ramp 66 Comment
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Feb 28 2016
  RSA737375  Atriplex amnicola R. E. Riefner 2006-5-7 06 -180 Orange N end of City of San Clemente, along I5, N side, immediately S of Camino De Estrella exit ramp. 66 Comment
  SBBG122000  Atriplex amnicola R. E. Riefner 2006-8-6 06 -381 Orange Big Cyn Crk drainage near Back Bay Drive, Newport Bay 8 Comment
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Dec 13 2012
  POM122999  Atriplex argentea Marcus E. Jones 1924-8-29 s.n. Orange Newport Comment
  RSA65355  Atriplex argentea F. W. Peirson 1924-8-29 5090 Orange Corona Del Mar Comment
  UC7071  Atriplex argentea var. mohavensis A. J. McClatchie 1896-6-20 Orange Westminster Comment
  JEPS59563  Atriplex californica L. M. Booth 1932-5-19 1068 Orange Newport Bay Comment
  UC1543080  Atriplex californica Donald G. Nelson 1935-6-27 327 Orange on bluffs facing ocean beaches s Corona del Mar (s of mouth of Newport Bay); s of Corona del Mar, s of mouth of Newport Bay Comment
  UCSB56683  Atriplex californica Roberts, Fred 1985-7-9 Orange Crystal Cove State Park; Pelican Point, 1.9 km. SW Pelican Hill 15 Comment
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Feb 9 2020
  JEPS59536  Atriplex canescens L. M. Booth 1932-7-1 1249 Orange Newport Bay Comment
  RSA255  Atriplex canescens J. T. Howell 1927-10-22 761 Orange Near Eastern Boundary, Rancho Santa Ana. 152 Comment
  RSA260  Atriplex canescens J. T. Howell 1927-10-22 759 Orange Near Eastern Boundary, Rancho Santa Ana. 152 Comment
  RSA624453  Atriplex canescens L. C. Wheeler 1933-10-21 2221 Orange Newport Bay. 3 Comment
  RSA734662  Atriplex canescens A. C. Sanders, Fred M. Roberts 2008-6-17 35484 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, East Loma Ridge Spur Road c. 300 m NW of Shoestring Rd. junction, on ridge above tollway, 1.35 mi. SSW of Irvine Lake. 398 Comment
  UC520302  Atriplex canescens Joseph Andorfer Ewan 1932-7-28 7707 Orange seaward bluffs at Corona del Mar; seaward bluffs at Corona del Mar Comment
  IRVC25344  Atriplex canescens subsp. canescens Helen Camp 1988-12-7 12 Orange Aliso Canyon, 2.6km NNE Aliso Peak, Aliso-Wood Canyon Regional Park 37 Comment
  SD144473  Atriplex canescens var. canescens B. Pitzer 1996-4-30 2789 Orange Crystal Cove State Park, S of City of Irvine on Hwy 1 (Pacific Coast Hwy). Comment
  CAS-BOT-BC172635  Atriplex coulteri I. M. Johnston 1918-5-5 1928 Orange Laguna Beach Comment
  SD243320  Atriplex glauca R. E Riefner 2006-3-19 06 52 Orange City of Newport Beach, near Avocado Ave. and San Nicolas Drive, W of MacArthur Blvd. 77 Comment
  UCR203878  Atriplex glauca R. E. Riefner Jr. 2009-1-2 09- 4 Orange South Coast, city of Newport Beach, Upper Newport Bay, vicinity of Irvine Ave. and Santiago Dr. 10 Comment
  SD233800  Atriplex glauca W. Ferren 1991-12-2 EPA 17 Orange San Juan Creek Highway 74 at bridge for San Juan Creek, San Juan Capistrano. Comment
  UCR46556  Atriplex lentiformis B. G. Pitzer, D. C. Hawks 1986-10-21 0354 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, c. 10 mi. east of Santa Ana, along Jeffrey Road in Hicks Canyon, c. 1.5 mi. north of the South Coast Gun Club 274 Comment
  UCSB56520  Atriplex lentiformis Johnson, J. 1978-11-8 Orange Irvine; Coyote Canyon Road and Mac Arthur Blvd. intersection Comment
  RSA305656  Atriplex lentiformis subsp. breweri C. W. Tilforth, B. Busenberg 1979-11-14 1928 Orange North of Marina parking lot at Dana Point Comment
  RSA33798  Atriplex leucophylla N. C. Cooper 1942-11-9 884 Orange Balboa Comment
  UCR151119  Atriplex polycarpa Scott D. White 1998-10-15 7185 Orange Santa Ana Mtns foothills, Yorba Linda, c. 0.5 mi south of Telegraph Canyon between Ohio St. and Fairmont 305 Comment
  RSA251  Atriplex prostrata J. T. Howell 1927-10-29 s.n. Orange Bryant Ranch, near Long Beach. 15 Comment
  UCR141335  Atriplex rhagodioides Robert DeRuff 1987-5-2 369 Orange Southern Coast, Newport Beach, Newport Back Bay, Big Canyon 8 Comment
  RSA696212  Atriplex rosea Keith E. Hoffmaster 1934-5-31 s.n. Orange Santa Ana. Comment
  IRVC9295  Atriplex semibaccata B. T. Gittins 1966-6-24 1421 Orange Crescent Beach; coastal bluff. Laguna Beach Comment
  UCR66089  Atriplex semibaccata A. C. Sanders 1990-10-6 10192 Orange Newport Bay, North Star County Beach Area on the SW end of the Bay, c. 2 km inland of Hwy 1. 3 Comment
  POM201895  Atriplex serenana L. M. Booth 1932-7-1 1248 Orange Newport Lagoon. Comment
  RSA5955  Atriplex serenana C. B. Wolf 1932-7-7 3846 Orange Bixby Ave., 0.7 mile W of Hansen road (0.2 mile W of SE corner of NE/4 of NW/4). 8 Comment
  CAS-BOT-BC140679  Atriplex suberecta Tom Perring; Tracy Pinckard 1994-3-2 s.n. Orange South Coast: Tustin, Marine Helicopter Station at the corner of Moffett Drive and Jamboree Rd. 11 Comment
  IRVC27507  Atriplex suberecta Mark A. Elvin 2004-5-2 3424 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA720295  Atriplex suberecta Tom Perring, Tracy Pinkard 1994-3-2 s.n. Orange South Coast: Tustin, Marine Helicopter Station at the corner of Moffett Dr and Hamboree Rd. 11 Comment
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Jul 19 2010
  UCD97688  Atriplex suberecta Tom Perring; Tracy Pinckard 1994-3-2 s.n. Orange South Coast, Tustin, Marine Helicopter Station at the corner of Moffett Drive and Jamboree Road. 11 Comment
  IRVC29713  Atriplex triangularis Mark A. Elvin, Barry S. Nerhus 2006-11-4 5249 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA65426  Atriplex watsonii F. W. Peirson 1924-2-10 4533 Orange Corona Del Mar Comment
  SBBG65356  Atriplex watsonii M. N. Ackley 1928-9-22 419 Orange Sunset Beach 8 Comment
  CAS-BOT-BC146059  Avena barbata Ira L. Wiggins 1966-3-16 20529 Orange Roadside near entrance to Firestone Boy Scouts Reservation. Comment
  JEPS68451  Avena barbata L. M. Booth 1932-5-12 1040 Orange Newport Bay Comment
  UC1130900  Avena barbata A. Lewis Apr 1934 395 Orange San Joaquin Hills Corona Quadrangle Comment
  UCR193000  Avena barbata A. C. Sanders, T. B. Salvato 2008-5-13 35378 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  RSA0042729  Avena barbata David Barrios 1991-5-1 17 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir., Yorba Linda. 365 Comment
  HSC9025  Avena fatua J. W. Johnson 1961-3-29 Orange Newport Beach Comment
  UCR102010  Avena fatua B. G. Pitzer 1997-3-25 3003 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  POM48018  Baccharis douglasii I. M. Johnston 1924-8-29 s.n. Orange 3 miles NW of Huntington Beach Comment
  CDA1073  Baccharis emoryi D. G. Kelch 2006-12-9 6 .537 Orange Along Newport Back Bay Dr. in side canyon. Comment
  RSA528051  Baccharis emoryi A. C. Sanders 1990-10-6 10190 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Hwy 1 1 Comment
  RSA792937  Baccharis emoryi R. F. Thorne 1984-1 s.n. Orange Newport Back Bay. Comment
  UCR112095  Baccharis glutinosa A. C. Sanders, D. Malueg, K. D. Jones 2000-4-19 23336 Orange Pacific Coast, Bolsa Chica Lagoon, along dirt roads in oil field, east of Hwy 1, east of Bolsa Chica St. 11 Comment
  UCR205876  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08- 171 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Road 495 Comment
  RSA741700  Baccharis malibuensis R. E. Riefner Jr. 2008-7-17 08 -241 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 600 Comment
  RSA12829  Baccharis pilularis C. B. Wolf 1934-12-26 6262 Orange Hills and ravines near ocean, S end of town of San Clemente 15 Comment
  RSA712941  Baccharis salicifolia Fred M. Roberts 2005-10-3 6306 Orange San Juan Capistrano: San Juan Creek wash, La Novia Road Bridge to 100m E of bridge, 1.4km E Mission San Juan Capistrano, 27 Comment
  RSA751987  Baccharis salicifolia Fred M. Roberts, Eliza Maher 2008-3-26 6799 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 71 Comment
  UCD129475  Baccharis salicifolia subsp. salicifolia P. B. Kennedy 1925-1-12 4 Orange on range, Irvine Ranch. Comment
  UCD129397  Baccharis salicina Ira L. Wiggins 1965-11-6 20338 Orange Kraemer Oil Estates, near well no. 15, near end of county road constituted by continuation of Orangethorpe Ave. Comment
  UCD129399  Baccharis salicina A. C. Sanders 1990-10-6 10199 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Hwy 1. 1 Comment
  SEINET5585508  Bahiopsis laciniata R. E. Riefner Jr. 2013-1 13 -56 Orange Anaheim Hills, vicinity Hidden Canyon Rd. at Avenue De Santiago. 305 Comment
  IRVC20371  Barbarea orthoceras D. A. Roberts 1983-3-22 3024 Orange San Juan Canyon, Calif. Rte. 74, south side, 4.3km by road E San Juan Guard Station; 2.3km WNW Sitton Peak, Santa Ana Mountains 407 Comment
  CDA7901  Bassia hyssopifolia Adam Ontiveros 2008-7-8 PDR# 1543672 Orange Anaheim, 1750 S. Douglass Rd 0 Comment
  IRVC25221  Bassia hyssopifolia Fred M. Roberts 1986-11-4 3202 Orange Anaheim Bay, north of Hog Island, Seal Beach Naval Weapons Station 0 Comment
  SBBG47296  Bassia hyssopifolia R. N. Philbrick 1973-8-31 Orange marsh just E of University of California, Irvine Comment
  POM201794  Batis maritima L. M. Booth 1932-8-5 1349 Orange Santa Ana Delta Comment
  POM17841  Bebbia juncea Philip A. Munz 1923-9-7 7771 Orange Mouth of Trabuco Canyon 305 Comment
  IRVC22020  Bebbia juncea var. aspera D. Bramlet 1985-7-2 AH-1 Orange Anaheim Hills Golf Course, on knoll near #3 green, Anaheim 183 Comment
  UCD169738  Berberis aquifolium var. dictyota R. F. Thorne; et al. 1977-4-27 49716 Orange Santa Ana Mountains: Bedford Truck Trail, ca. 0.8 km below junction with Main Divide Truck Trail. 1402 Comment
  RSA789603  Berberis dictyota R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49716 Orange Santa Ana Mountains: Bedford Truck Trail, ca. 0.8 km below junction with Main Divide Truck Trail Comment
  CAS-BOT-BC102098  Bidens laevis John Thomas Howell 1927-10-23 3170 Orange Santa Ana River bottom, Santa Ana Canon 152 Comment
  RSA488143  Bidens laevis Fred M. Roberts, Gordon Marsh 1985-10-26 2519 Orange Santa Ana River: adjacent to Huntington Beach: 0.7 km SSW Adams St bridge 4 Comment
  CAS-BOT-BC128000  Bidens pilosa Ira L. Wiggins 1965-10-24 20287 Orange Bank of storm drain at corner of Yorba Linda and State College Blvds., Fullerton Comment
  RSA33597  Bloomeria crocea var. crocea N. C. Cooper 1944-6-4 1343 Orange San Juan Canyon, lower camp ground. 457 Comment
  RSA48920  Bloomeria crocea var. crocea Philip A. Munz 1949-5-26 13394 Orange Head of Sierra [Freemont] Canyon, Santa Ana Mountains 732 Comment
  RSA584713  Bloomeria crocea var. crocea Fred M. Roberts 1989-5-18 4373 Orange Santa Ana Mountains: Upper Gypsum canyon, above ridge road, ca. 6.4 km WSW Sierra Peak. 415 Comment
  CAS-BOT-BC31014  Bolboschoenus maritimus P. A. Munz 1918-5-4 2226 Orange Laguna Lakes, edge of pond. Comment
  CAS-BOT-BC21114  Bolboschoenus maritimus subsp. paludosus James R. Shevock 1972-9-27 2292 Orange South Coast Ranges. Upper Newport Bay, city of Newport Beach. 1 Comment
  RSA37  Bothriochloa barbinodis J. T. Howell 1927-6-5 38 Orange Rancho Santa Ana, near east boundary. 152 Comment
  UCSB50629  Bothriochloa barbinodis Roberts, Fred 1982-6-30 Orange Laguna Nigel, Niguel Hill, Pacific Island Dr; 2.0 km SE Aliso Park; 1.3 km E Bench Mark 133 Comment
  SD245200  Bothriochloa barbinodis R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49623 Orange Santa Ana Mountains: along Ortega Highway (74), about 1/4 mile above San Juan Fire Station. Comment
  UCR140887  Bougainvillea glabra Robert DeRuff 1988-9-16 348 Orange Southern Coast, Newport Beach, Newport Back Bay, path between 23rd Street and Mariners Drive 9 Comment
  POM190177  Bowlesia incana Marcus E. Jones 1931-3-23 28128 Orange Laguna. Comment
  CAS-BOT-BC420395  Boykinia rotundifolia R. J. Smith 1903-6-1 79 Orange Mill Creek and Santa Ana River 914 Comment
  CDA22564  Brachypodium distachyon J. B. Anderson 1966-4-22 615 Orange San Joaquin Hills: Central Los Trancos Canyon. 0 Comment
  UCR191215  Brachypodium distachyon A. C. Sanders 2008-4-29 35145 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  RSA587874  Brachypodium distachyon Fred M. Roberts, K. Nowak, G. Madieros, T. Neely 1990-5-11 4763 Orange Laguna Niguel: Niguel Hill, at end of Le Conte Road, 0.6 kilometer SW summit of Niguel Hill., UTM Z11 37 07 6000m N, 4 31 600m E. 195 Comment
  UCR223425  Brassica geniculata Dick Newell, Don Millar 2011-2-8 057 Orange Peninsular Range; Santa Ana Mtns., Black Star Coal Mine above Fremont Canyon, along Coal Rd. 475 Comment
  IRVC1042  Brassica nigra B. Mawdsley 1965-4-18 Orange Corona del Mar. Newport Beach Comment
  UCSB42715  Brassica rapa Fall, G. 1970-2-15 Orange Behind Othrays Hall I; 651 N. Titan Dr.; S of Hutwood Ave. and E of State College Blvd. Comment
  IRVC1014  Brassica rapa subsp. sylvestris 1965-5-25 Orange Corona del Mar, Begonia Ave. D.C. Newport Beach Comment
  UCSB48079  Brickellia californica Roberts, Fred 1981-11-15 Orange Santa Ana Mtns.; San Juan Canyon, Hwy. 74, across road from entrance to Lower San Juan Picnic Ground 436 Comment
  RSA627785  Brodiaea jolonensis Scott D. White 1998-4-9 6265 Orange University of California, Irvine campus: Site of proposed Research Park. Southwest of main campus circle, ca. halfway between Berkeley Avenue and new freeway (Bonita Canyon). 37 Comment
  UCR107850  Brodiaea jolonensis Scott D. White 1998-4-9 6265 Orange UC Irvine Campus: Site of proposed Research Park. SW of main campus circle, c. halfway between Berkeley Ave. and the new Fwy (Bonita Canyon) 37 Comment
  CAS-BOT-BC144328  Bromus Ira L. Wiggins 1966-3-5 20519 Orange About 0.5 mile west of El Torro Post Office, along Highway S-18. Comment
  CAS-BOT-BC144299  Bromus arizonicus Ira L. Wiggins 1966-4-22 20617 Orange Shoulder of pavement along Associated Road between Yorba Linda Boulevard and Imperial Highway. Comment
  CAS-BOT-BC149398  Bromus berteroanus Helen D. Geis 1902-4-1 s.n. Orange Santiago Canon [Canyon]. Comment
  RSA562762  Bromus carinatus Steve Boyd, Timothy S. Ross 1992-5-19 7417 Orange Southern Santa Ana Mountains San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo (7S06) N into Aliso Canyon. Comment
  RSA731974  Bromus carinatus A. C. Sanders, Fred M. Roberts 2008-4-8 34751 Orange Peninsular Range; Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd 457 Comment
  RSA734688  Bromus catharticus A. C. Sanders, T. B. Salvato 2008-5-13 35355 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  POM7087  Bromus diandrus P. A. Munz, L. T. Street, G. Williams 1919-5-3 2644 Orange Santa Ana River Canyon. Comment
  RSA385398  Bromus diandrus Barbara Hutchison 1941-5-3 s.n. Orange Los Angeles. Comment
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Oct 15 2013
  UCR190962  Bromus hordeaceus A. C. Sanders, Fred M. Roberts 2008-4-22 35041 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, valley at south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado, above spring shown on topo map 457 Comment
  UCR2233  Bromus hordeaceus F. M. Reed 1928-5-10 5884 Orange Laguna Canyon below lakes 91 Comment
  RSA4803  Bromus hordeaceus James Snow s.n. Orange Bryant Ranch, near Long Beach. South West 1/4 Section 1, Township 5 S, Range 12 W, Station #1. Comment
  RSA696328  Bromus hordeaceus Keith E. Hoffmaster 1928-4-25 s.n. Orange Santa Ana Comment
  SEINET179447 Image available Bromus hordeaceus subsp. hordeaceus Lawrence M. Booth 1932-5-12 1023 Orange Newport Bay Comment
  UCR242753  Bromus madritensis Fred M. Roberts 2012-5-10 7581 Orange SAN JOAQUIN HILLS: Buck Gully, south tributary, north slope Pelican Hill, just north of Pelican Hills Drive, 0.7 km N Pelican Hill summit 154 Comment
  RSA697684  Bromus rigidus Rankin s.n. Orange Costa Mesa. Comment
  CAS-BOT-BC161821  Bromus rubens Ira L. Wiggins 1966-3-16 20526 Orange Near entrance to Firestone Boy Scouts Reservation. Comment
  CAS-BOT-BC161824  Bromus rubens C. L. Hitchcock; C. V. Muhlick 1964-3-17 23060 Orange 8 miles east of Yorba Linda, Santa Ana Canyon. Comment
  RSA696610  Bromus rubens Jeanne Paxton 1934-4-21 s.n. Orange Orange County Dam. Comment
  UCD59517  Bromus rubens Ira L. Wiggins 1966-3-4 20494 Orange Shoulder of Peralta Ave. near junction of Newport Freeway and Riverside Highway. Comment
  RSA697680  Bromus rubens Elisabeth Norland 1929-4-11 s.n. Orange Cypress. Comment
  SEINET11675600  Bromus rubens J. F. Bright, Wyman, C. 1933-1 8209 Orange near LaGuna Beach Comment
  CDA1847  Bromus sterilis Scott D. White, Noel Davis 1998-5-21 6548 Orange Peninsular Ranges; Santa Ana Mountains region; Santa Ana Mountains, Mission Viejo Area: Aliso Creek watershed, east of El Toro Road just N of junction w/ Valley Vista Way. USGS Santiago Pk. quad: T6S R7W Sec.4, 33 40.5 N, 117 37 W. Elev. ca. 1000-1600 ft. (300-500 m). Comment
  RSA484552  Cakile edentula F. R. Fosberg 1930-7-10 S- 3174 Orange Anaheim Landing. [Los Angeles Co. on label] 2 Comment
  POM202606  Cakile edentula subsp. edentula L. M. Booth 1932-5-27 1131 Orange Newport Beach Comment
  POM543  Cakile edentula subsp. edentula D. L. Crawford 1916-7-28 s.n. Orange Abalone Point Comment
  SEINET5642639  Cakile maritima Shelby J. Wood 2013-3-9 8 Orange Sunset Beach close to Bolsa Chica.; 0 Comment
  CSUSB524  Cakile maritima R. P. Sunderman 1968-5-11 S. N. Orange Beach just south of Corona del Mar Comment
  UCSB42556  Cakile maritima Romspert, Alan 1966-3-11 Orange Along U.S. Highway 101 alternate across from Huntington Beach Comment
  RSA648659  Calamagrostis koelerioides R. E. Riefner 2000-6-22 20 -572 Orange NCCP North Ranch Policy Plan Area, NE property; along National Forest boundary, at powerline. 756 Comment
  RSA737846  Calandrinia breweri R. E. Riefner 2008-4-15 08 -72 Orange Irvine Ranch Reserve, North Irvine Ranch, western middle Freemont Canyon area, Coalmine SCE Rd. 353 Comment
  CAS-BOT-BC438319  Calandrinia ciliata C. L. Hitchcock 1966-3-15 24136 Orange 1/2 mile e. of Brea Comment
  RSA594806  Calandrinia ciliata Fred M. Roberts, Cathy Nowak 1995-4-19 4924 Orange Santa Ana Mountains: Lower Hot Springs Canyon, San Juan Trail, 0.7 km NW Juan Rancho Survey Mark. 256 Comment
  UCD100199  Calandrinia ciliata C. L. Hitchcock 1966-3-15 24132 Orange 1/2 mile e. of Brea. Comment
  CAS-BOT-BC438321  Calandrinia ciliata Ira L. Wiggins 1966-3-5 20513 Orange About 1/2 mi. W. of El Toro Post Office, along Highway S-18. Comment
  CDA5107  Callistemon viminalis R. E. Riefner Jr. 2006-11-14 06 -674 Orange City of Irvine, San Diego Creek; vicinity of Campus Avenue at University Drive. Comment
  RSA665954  Callitriche marginata Fred M. Roberts, Michelle Lee, Kristen Szabo 2001-4-13 5425 Orange Rancho Mission Viejo: South of San Juan Creek, 0.6km WNW Median Rancho Survey Marker. PCR Vernal Pool 2. 183 Comment
  RSA602120  Calochortus catalinae Scott D. White 1997-5-6 5047 Orange Santa Ana Mountains. Santiago Canyon area: Ridgetop road N and W of Bolero Lookout. 427 Comment
  RSA734347  Calochortus catalinae A. C. Sanders, Linda Farley, Fred M. Roberts, David E. Bramlet 2008-4-1 34639 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 396 Comment
  RSA741482  Calochortus catalinae R. E. Riefner 2008-4-20 8 -66 Orange On Loma Ridge, near city of Irvine, E side of Hicks Haul Rd., Irvine Ranch Reserve, Management Area 11. Comment
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Feb 2 2011
  RSA749297  Calochortus catalinae Fred M. Roberts 1999-4-21 5183 Orange Lomas de Santiago: Loma Ridge, ridges north of Dripping Springs Cyn., 1.5 km W Silverado Sch. and 4.8 km NNW Bolero Lookout. 365 Comment
  RSA749646  Calochortus catalinae D. E. Bramlet 2008-6-3 4289 Orange Unspecified. 483 Comment
  RSA753418  Calochortus catalinae D. E. Bramlet 2008-3-31 4136 Orange 223m E of Upper Hicks Haul Rd, Trib. to Limestone Cyn, 1km S of Santiago Cyn Rd. 328 Comment
  POM17811  Calochortus invenustus Philip A. Munz, D. D. Keck 1923-6-14 7093 Orange Santiago peak, Santa Ana Mountains. 1616 Comment
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Apr 1 2013
  CAS-BOT-BC483375  Calochortus invenustus L. R. Abrams 1901-6-15 1848 Orange Santiago Peak Comment
  SEINET7067525  Calochortus persistens A. G. Vestal 1947-6-12 s.n. Orange Grade to Trabuco Canyon. Coordinate datum: NAD27. UTM Zone 11, 445302mE, 3724321mN. Comment
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Feb 20 2020
  RSA561495  Calochortus plummerae Steve Boyd, Kyle Boyd 1992-7-9 7655 Orange Northern Santa Ana Mountains, along the main crest of the range, north of Pleasants Peak and south of Oak Flat (aka Oat Flat), 1.5 miles south of junction of Main Divide and Skyline Roads. Comment
  RSA118  Calochortus splendens J. T. Howell 1928-4-7 895 Orange Bee Canyon, Rancho Santa Ana 152 Comment
  RSA16422  Calochortus splendens Percy C. Everett 1935-5-19 6874 Orange Santa Ana Mountains, Baker Canyon, West Ladd Truck trail. 305 Comment
  UCR150612  Calochortus splendens Scott D. White 1997-5-6 5046 Orange Peninsular Ranges; Santa Ana Mountains, Lomas de Santiago. Santiago Canyon area: Ridgetop road N and west of Bolero Lookout 488 Comment
  UCR16063  Calochortus splendens K. T. Ingram 1976-5-2 s.n. Orange Peninsular Range; Santa Ana Mtns., Ortega Highway, Route 74, 12 mi. east of Hwy 405 Comment
  UCR191023  Calochortus splendens A. C. Sanders, Fred M. Roberts 2008-4-22 35013 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  CAS-BOT-BC492696  Calochortus splendens D. L. Crawford May 10 s.n. Orange Laguna Mts. 304 Comment
  CAS-BOT-BC492697  Calochortus splendens D. L. Crawford 1916-5-5 s.n. Orange Laguna Beach Comment
  CAS-BOT-BC492702  Calochortus splendens Le Roy Abrams 1901-6-16 1798 Orange Trabuco Canon Comment
  SEINET7067518  Calochortus weedii A. G. Vestal 1947-6-12 s.n. Orange Upper San Juan Canyon on Route 74 to Lake Elsinore in Cleveland National Forest. Coordinate datum: NAD27. UTM Zone 11, 452352mE, 3716538mN. Comment
  RSA271148  Calochortus weedii var. intermedius C. W. Tilforth 1977-6-15 1344 Orange Rancho Santa Ana property in the area of Horseshoe Bend of the Santa Ana River, Santa Ana Canyon, north-east Orange County. Comment
  RSA580944  Calochortus weedii var. intermedius D. E. Bramlet 1994-6-2 2378 Orange San Joaquin Hills. On ridgeline north of Little Sycamore Canyon. The site in located 244 m NE of Little Sycamore Canyon and 1.3 km west of Laguna Canyon. Road. 165 Comment
  RSA690975  Calochortus weedii var. intermedius Scott D. White, Michael Honer 2003-5-29 9428 Orange Santa Ana Mtn foothills: Rancho Mission Viejo. Hills above Canada Gobernadora, west side of canyon, ca. 1 air mile north of Ortega hwy. 91 Comment
  RSA746523  Calochortus weedii var. intermedius R. E. Riefner 2008-6-3 8 -141 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 641 Comment
  SEINET3885376  Calochortus weedii var. intermedius D. Bramlet 1994-6-2 2378 Orange San Joaquin Hills. On ridgeline north of Little Sycamore Canyon. The site is locate 244 m NE of Little Sycamore Canyon and 1.3 km west of Laguna Cyn. Road. Laguna Beach 7.5 USGS quadrangle 37 19 160m. N X 4 29 160m E.; 0 165 Comment
  UCR133200  Calochortus weedii var. intermedius Adrian Wolf 2000-6-19 462 Orange Santa Ana Mtns., North Ranch Policy Plan Area, 'panhandle' south of Black Star Canyon, east of Black Star Road, north of Baker Canyon 396 Comment
  RSA741483  Calochortus weedii var. weedii R. E. Riefner 2008-6-5 8 -145 Orange Near City of Orange, W side of Hicks Haul Rd., Rattlesnake Cyn., SW of the asphalt plant, Irvine Ranch Reserve, Management Area 6. Comment
  UCR160851  Calochortus weedii var. weedii Mark S. Brunell 1991-7-4 s.n. Orange Peninsular Range; Santa Ana Mtns., Hwy 74 c. 3 miles east of San Juan Hot Springs 427 Comment
  RSA747706  Calycadenia tenella Fred M. Roberts 2008-5-16 6984 Orange Dana Point: Dana Point Hradland, CNLM Preserve, north of Marguerita Drive, 0.5 km WNW Marine Institute, Dana Point Harbor. 75 Comment
  RSA542425  Calycadenia tenella Fred M. Roberts 1988-5-25 3979 Orange Rancho Mission Viejo: Lower Canada Chiquita, 2.0 km SSE Medium Rancho Survey Mark 88 Comment
  JEPS52574  Calyptridium monandrum Alice King April 1908 Orange Santa Ana River Comment
  UCR230223  Calystegia macrostegia Dick Newell, Ed Hill 2011-3-29 098 Orange Peninsular Range; Santa Ana Mtns., east of Outdoor Education Center on MWD service road, 1.65 mi. NW (311 deg. ) of Irvine Lake dam 237 Comment
  CAS-BOT-BC215766  Calystegia macrostegia subsp. arida Le Roy Abrams 1901-6-14 1800 Orange Trabuco Canyon Comment
  RSA602625  Calystegia macrostegia subsp. arida J. Mallory, V. McCoy 1995-7-3 6454110 Orange Santa Ana Mountains: Blind Canyon, ca. 0.5 mi. E of confluence with Santiago Canyon, on a W-facing slope. N of Irvine Lake. 300 Comment
  IRVC21683  Calystegia macrostegia subsp. cyclostegia Fred M. Roberts 1975-4-7 75 -40 Orange 0.7km ESE Dana Hills High School, Dana Point 90 Comment
  POM311830  Calystegia macrostegia subsp. intermedia Lyn Whistler 1958-4-4 167 Orange Salt Creek Beach, south of Laguna on Highway 101. 15 Comment
  RSA394876  Calystegia macrostegia subsp. intermedia M. B. Dunkle 1933-4-9 3283 Orange Dana Point. Comment
  RSA697155  Calystegia occidentalis subsp. occidentalis Anonymous s.n. Orange Modjeska's Home. Comment
  IRVC980  Calystegia sepium subsp. sepium J. Pierce 1965-4-17 Orange Laguna Canyon. Laguna Beach Comment
  HSC6359  Calystegia soldanella B. Francis 1964-5-2 42 Orange .5 mi. S of Newport Comment
  UCR157710  Camissonia Adrian Wolf 1998-5-15 294 A Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 Comment
  UCR102028  Camissonia bistorta B. G. Pitzer 1997-3-25 3031 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, on bluffs immediately above beach, along trail that winds around restoration area and down to beach. 30 Comment
  UCR191475  Camissonia californica A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34658 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 330 Comment
  CSUSB189  Camissonia cheiranthifolia subsp. suffruticosa Nancy J. Moriarty 1973-5-20 730520 3 Orange Huntington Beach; 0.5 mile north of Brookhurst Street on the west side of Pacific Coast Highway. Comment
  IRVC29758  Camissonia cheiranthifolia subsp. suffruticosa Barry S. Nerhus, Mark A. Elvin 2006-11-4 11 Orange Huntington Beach, Bolsa Chica Wetlands, SW portion of Reserve beside Pacific Coast Highway. Southern Coastal 0 Comment
  POM3331  Camissonia cheiranthifolia subsp. suffruticosa D. L. Crawford 1927-8-3 742 Orange Laguna Beach Region, Aliso Pt. shore cliffs. Comment
  RSA0073650  Camissonia cheiranthifolia subsp. suffruticosa Fred M. Roberts 2010-3-12 7181 Orange Southeast Coast: Dana Point Headlands: Harbor Point Park, South of Green Lantern and west of Dana Point Harbor, c.a. 150 meters SE Interpretive Center. 50 Comment
  RSA698255  Camissonia cheiranthifolia subsp. suffruticosa Minor Warne 1934-04 s.n. Orange Sand hills along the coast. Comment
  UCR191226  Camissonia hirtella A. C. Sanders 2008-4-29 35123 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  UCR192491  Camissonia hirtella A. C. Sanders, Fred M. Roberts 2008-3-25 34558 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA542490  Camissonia micrantha Fred M. Roberts, T. Sholars, B. Stechmeyer 1988-3-29 3880 Orange Santa Ana Mountains: Hot Springs Canyon, 0.5 km by road north Hwy 74, 0.9 km ESE Juan Rancho Survey Marker. 223 Comment
  CAS-BOT-BC160448  Camissoniopsis cheiranthifolia subsp. suffruticosa David D. Keck 1933-9-21 2523 Orange Sunset Beach Comment
  UC523554  Camissoniopsis cheiranthifolia subsp. suffruticosa David D. Keck 1933-9-21 2523 Orange dunes about town Sunset Beach Comment
  JEPS31778  Camissoniopsis lewisii Alice King 1908-1 Orange Santa Ana Comment
  RSA759275  Cannabis sativa Robt. Allen, Reginald I. Durant 2008-5-9 s.n. Orange Silverado Canyon, 1.6 road miles EENE above Maple Springs Forest Gate, between Lost Woman Canyon and Spruce Canyon. 766 Comment
  POM96134  Cardamine californica var. integrifolia Marcus E. Jones 1926-3-13 s.n. Orange Santa Ana Canyon. Comment
  UC537121  Cardaria draba Lawrence M. Booth 1932-5-15 1197 Orange e of Huntington Beach Comment
  POM187377  Cardaria pubescens Ed Johnson s.n. Orange Westminster. Comment
  RSA65597  Cardionema ramosissimum F. W. Peirson 1923-3-25 4166 Orange Aliso Creek, near Laguna Beach. Comment
  UCR52601  Carduus pycnocephalus Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, Santa Ana Mountains 275 Comment
  IRVC17972  Carduus tenuiflorus Karlin G. Marsh 1980-5-5 Orange Rancho Mission Viejo: Planning area; along road way. Southern Coastal Comment
  UCR193807  Carex pellita A. C. Sanders, Fred M. Roberts 2008-7-16 35860 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hangmans Tree Canyon 379 Comment
  CAS-BOT-BC118499  Carex praegracilis Helen D. Geis 1902-4-1 562 Orange Near Santa Ana Comment
  UC212128  Carex praegracilis I. M. Johnston 1918-5-5 1890 Orange El Toro 76 Comment
  CAS-BOT-BC118486  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Peat Lands Comment
  CAS-BOT-BC118487  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Peat Lands Comment
  SEINET7572179 Image available Carex praegracilis Helen D. Geis 1902-1 505 Orange [no precise loc] Comment
  IRVC26693  Carex spissa Mark A. Elvin 2004-4-4 3230 Orange UCI Arboretum Southern Coastal 15 Comment
  UC1618051  Carex triquetra Donald G. Nelson 1935-4-6 254 a Orange San Juan Canyon; about 200-300 ft below main hwy, about 4 mi from summit, e of San Juan Capistrano Comment
  JEPS21372  Castilleja affinis subsp. affinis Milo S. Baker 1958-5-20 13304 Orange Newport Bay Comment
  JEPS24425  Castilleja affinis subsp. affinis Peter M. Ray 1949-5-22 1412 Orange s of San Clemente; San Clemente State Park 15 Comment
  RSA789602  Castilleja affinis subsp. affinis Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49649 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] Comment
  SD247731  Castilleja affinis subsp. affinis R. F. Thorne, C. W. Tilforth, E. W. Lathrop. 1977-4-27 49649 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] Comment
  RSA658309  Castilleja angustifolia Steve Teh, Marie Gabbard 1994-4-28 18 Orange Modjeska Grade Rd. 1/2 mile back on fire rd. Comment
  JEPS21373  Castilleja applegatei subsp. martinii Milo S. Baker 1938-5-17 13296 Orange Santa Ana Mts. Comment
  RSA160584  Castilleja applegatei subsp. martinii J. D. Olmsted 1959-5-1 520 Orange N of Hidden Ranch in Black Star Canyon and 100 yards NW of Rattlesnake Rock, 5 miles E of Irvine Res, Snta Ana Mtns to Irvine Lake. 747 Comment
  UC511102  Castilleja exserta Lyman Benson 1932-3-26 3191 Orange Dana Point 60 Comment
  UCR256945  Castilleja exserta subsp. exserta Naomi Fraga 2009-5-11 2717 Orange Santa Ana Mountains, Cleveland National Forest, San Juan Loop Trail just west of Sugarloaf Spur Trail 912 Comment
  UCSB9376  Castilleja exserta subsp. exserta Lloyd, Robert 1959-4-17 Orange Mt. Range Santa Ana; 10 mi S of W Corona; on the Oak Flats Fire Road 792 Comment
  UCSB47597  Castilleja exserta subsp. exserta Roberts, Fred 1980-5-3 Orange 0.1km NE Falcon Group Camp; Santa Ana Mtns 1012 Comment
  RSA19418  Castilleja foliolosa I. W. Clokey 1932-3-1 5342 Orange Laguna Beach. Comment
  SBBG104116  Castilleja foliolosa B. Pitzer, S. Hemstreet 1992-5-27 1953 Orange USFS Rd 3S04 to Blue Jay Group Cmpgrd, off St Hwy 74, ca. 2 air mi W of El Cariso Cmpgrd 762 Comment
  UCR52606  Castilleja foliolosa Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, Santa Ana Mountains 275 Comment
  UC885188  Castilleja foliolosa I. W. Clokey 1932-3-1 5342 Orange Laguna Beach Comment
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Aug 31 2016
  RSA588889  Castilleja minor subsp. spiralis Fred M. Roberts Jr. 1990-6-4 4665 Orange Hall Canyon, 1.8 km NNW Mustang Spring at east edge of Flying B Ranch 421 Comment
  UCR193055  Castilleja minor subsp. spiralis A. C. Sanders, Mitch Provance 2008-5-20 35408 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  RSA542652  Caulanthus heterophyllus Fred M. Roberts 1988-3-15 3857 Orange Rancho Mission Viejo; Verdugo Canyon, 1.3 km SSW Lucan Survey Marker 201 Comment
  UCR191458  Caulanthus heterophyllus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34652 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 330 Comment
  UCD114584  Caulanthus lasiophyllus D. E. Bramlet 2008-3-31 4133 Orange Santa Ana Mountains. 305 m E of Upper Hicks Haul Road, in Trib to Limestone Cyn., 1 km S of Santiago Cyn. Road. 311 Comment
  RSA0054976  Ceanothus Keith E. Hoffmaster 1934-7-15 108 Orange Santa Ana mts. (Santiago can). Comment
  CAS-BOT-BC48491  Ceanothus crassifolius T. Cass 1975-4-11 74 -671 Orange Southside Baker Canyon at Santa Ana Nat. forest boundary. 396 Comment
  RSA171009  Ceanothus crassifolius Robert F. Thorne 1963-7-26 32829 Orange Santa Ana Mts., Cleveland National Forest, Trabugo District. 1189 Comment
  RSA790452  Ceanothus crassifolius Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49698 Orange Northern Santa Ana Mountains: Sierra Peak Comment
  UC1281316  Ceanothus crassifolius H. E. McMinn 1935-6-22 3921 Orange w Corona; Santa Ana Mts. Comment
  RSA733936  Ceanothus divaricatus Keith E. Hoffmaster 1936-5-3 715 Orange Santa Ana Mts (Santiago Peak) Comment
  RSA733958  Ceanothus integerrimus Keith E. Hoffmaster 1936-5-3 716 Orange Santa Ana Mts (Santiago Peak) Comment
  RSA798542  Ceanothus integerrimus Robert F. Thorne, E. W. Lathrop 1977-5-18 49742 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  RSA16472  Ceanothus integerrimus var. californicus Percy C. Everett 1935-6-19 7236 Orange Trabuco Canyon, 1mile below W summit of truck trail. 1006 Comment
  RSA25842  Ceanothus integerrimus var. californicus Carl B. Wolf 1941-8-15 11153 Orange w. slope Santiago Truck Trail, 1.6 mi. below mian divide motorway. 1220 Comment
  RSA30303  Ceanothus leucodermis Carl B. Wolf 1941-8-15 11254 Orange W. slope of Santiago Truck Trail. 4.4 mi. below mai divide motorway. 1067 Comment
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Sep 20 2013
  CAS-BOT-BC83752  Ceanothus megacarpus var. megacarpus D. O. Burge 2008-4-29 989 b Orange Niguel Hill 270 Comment
  UCSB48360  Ceanothus megacarpus var. megacarpus Roberts, Fred 1982-6-30 Orange LAGUNA NIGUEL: just N end of Pacific Island Dr., 1.6km ENE Aliso Peak 295 Comment
  UCSB48364  Ceanothus oliganthus var. oliganthus Roberts, Fred 1982-4-18 Orange SANTA ANA MTNS.: Upper Hot Springs Cyn., 0.1km SW Falcon Group Camp; 2.0km SE Los Pinos Peak 1075 Comment
  SBBG52715  Ceanothus oliganthus var. orcuttii C. Davidson 1977-5-18 5599 Orange Pleasant Pk, (on county line) Comment
  RSA488123  Ceanothus oliganthus var. sorediatus Fred M. Roberts, Karlin G. Marsh 1984-2-15 1186 Orange Caspers Regional Park, south rim of Lucas Canyon along Rancho Carrillo Rd., 4.2 km NE Visitor Center; 0.2 km NW Lucas Survey Marker. 420 Comment
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Sep 17 2014
  CAS-BOT-BC51847  Ceanothus papillosus Stark 1933-1-5 10029 Orange 2 mi. S. of summit of Skyline Dr. along rd. to Santiago peak, Santa Anna Mts. 1219 Comment
  RSA25945  Ceanothus papillosus var. roweanus B. D. Stark 1933-1-5 10030 Orange 2 mi. so. of summit of skyline Drive on road along ridge to Santiago Peak. Santa Ana Mts. 1067 Comment
  RSA790451  Ceanothus papillosus var. roweanus Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49697 Orange Northern Santa Ana Mountains: Sierra Peak Comment
  LA42097  Ceanothus spinosus Carl B. Wolf; 1936-7-8 8098 Orange Santa Ana Mountains, along Ortega Hwy, San Juan Canyon, 0.2 mi. W of Riverside County line 274 Comment
  UC1281278  Ceanothus tomentosus H. E. McMinn 1935-6-22 3927 Orange w Covina; Santa Ana Mountains, w of Covina Comment
  UC219276  Ceanothus tomentosus P. A. Munz and I. M. Johnston 1922-5-19 5311 Orange Santa Ana River Canyon 457 Comment
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Aug 8 2010
  RSA0027778  Ceanothus tomentosus subsp. olivaceus Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49676 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] 457 Comment
  IRVC27931  Celtis sinensis A. C. Sanders, Mark A. Elvin 2003-10-12 27326 Orange Irvine; UCI Arboretum, UCI campus near intersection of Jamboree Blvd and Campus Dr. Southern Coastal 15 Comment
  SD248305  Cenchrus longisetus R. E. Riefner Jr. 2013-2-11 13 41 Orange City of Laguna Beach, vicinity of Pacific Coast Highway and Montage Resort Drive. 29 Comment
  RSA0035211  Cenchrus setaceus Sandy Gray 1981-04 1 Orange Hwy. 142, Carbon Canyon Rd. 3 miles west of Cavida, Chino. Comment
  UCR109767  Centaurea melitensis R. D. Goeden, Don W. Ricker 1965-6-21 s.n. Orange Dana Point 61 Comment
  RSA5829  Centaurea melitensis C. B. Wolf 1932-6-28 3793 Orange Bryant Ranch, north boundary of field, N.E. corner of N-E 1/4 S.W. 1/4 sect 27 9 Comment
  CAS-BOT-BC284478  Centaurea solstitialis T. C. Fuller 1962-6-7 8870 Orange N. end of Fullerton Golf Course, Fullerton Comment
  CDA7332  Centaurea solstitialis T. C. Fuller 1962-6-7 8869 Orange North end of Fullerton Golf Course. Fullerton 0 Comment
  RSA761931  Centaurium venustum Suzanne Espino 2005-4-26 2 Orange Santa Ana Mountains, Caspers Wilderness Park, East Ridge Trial. Near water tank at E. 168 Comment
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Jun 6 2020
  UCSB69958  Centromadia fitchii Bramlet, D. 2008-9-17 Orange Coastal Plains and Basins; South Coastal Plain region; Upper Newport Bay, West Mesa, 76 m. E Irvine Ave. and 305 m. S of University Dr. 20 Comment
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Jul 17 2016
  RSA708451  Centromadia parryi subsp. australis Mark Elvin 2003-8-24 3012 Orange Southern coastal: San Jaquin Hills, Irvine, UCI, 100m N of the intersection of Shady Canyon Drive and Bonita Canyon Road. 72 Comment
  UCR237987  Centromadia parryi subsp. australis D. E. Bramlet 2008-9-17 4306 Orange South Coastal Plain, Upper Newport Bay, West Mesa, 76 m east of Irvine Ave. & 305 m south of University Dr. 20 Comment
  UCR238167  Centromadia parryi subsp. australis Mark A. Elvin, Peter A. Bowler 2003-6-28 2957 Orange Southern Coast, Irvine, San Joaquin Freshwater Marsh, adjacent to UCI campus, SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  CAS-BOT-BC288842  Centromadia parryi subsp. australis David D. Keck 1933-9-17 2524 Orange Westminster Comment
  RSA0119680  Cerastium glomeratum Fred M. Roberts 2015-3-10 7925 Orange San Joaquin Hills: Niguel Hill, on ridge above Aliso Canyon ear end of Ceanothus Drive (Hangover House property), 0.4 km WNW summit Aliso Peak. 122 Comment
  UCR174498  Cercocarpus A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33061 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  CAS-BOT-BC142121  Cercocarpus betuloides var. betuloides Alice Eastwood; John Thomas Howell 1937-4-24 3928 Orange 2 miles east of San Juan Hot Springs Comment
  CAS-BOT-BC142124  Cercocarpus betuloides var. betuloides E. R. Johnson 1929-4-11 1261 Orange Sierra Peak Trail, Santa Ana Mts. Comment
  RSA0014996  Cercocarpus betuloides var. betuloides Fred M. Roberts 2008-5-14 6963 Orange Lomas de Santiago: Loma Ridge, upper Bee Flat Canyon below Loma Ridge Rd., 1.3 km N Bee Peak and 5.4 km NW Bolero Lookout, Irvine Ranch Conservancy. 381 Comment
  CLARK-A1528-1693  Chaenactis artemisiifolia John C. Roos 1965-6-16 Orange Dana Point Comment
  CAS-BOT-BC279499  Chaenactis artemisiifolia Steve Boyd; Tim Ross 1992-5-20 7454 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon along a new section of trail heading up major side canyon northward to Sitton Peak Road (7S09) 457 Comment
  RSA587870  Chaenactis artemisiifolia Fred M. Roberts 1990-5-16 4630 Orange Santa Ana Mtns: Small canyon along SE side of Irvine Mesa, 3.5 km N Bolero Lookout 396 Comment
  UCR157714  Chaenactis glabriuscula Adrian Wolf 1998-5-15 294 B Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 Comment
  UCR16880  Chaenactis glabriuscula N. J. Moriarty 1973-5-27 730527 -4 Orange San Clemente State Beach, 0.5 mi south of Avenue Califia end Comment
  JEPS34213  Chaenactis glabriuscula var. glabriuscula Alice King 1908-3-1 Orange Santa Ana Anaheim Plains Comment
  UC149240  Chaenactis glabriuscula var. glabriuscula LeRoy Abrams 1903-4-13 3254 Orange Buena Park Comment
  UC1543106  Chaenactis glabriuscula var. glabriuscula Donald G. Nelson 1935-4-14 281 Orange edge of dry mesa facing Newport Bay (and the ocean, along the main coast highway); Newport Beach Comment
  IRVC598  Chaenactis glabriuscula var. glabriuscula M. Savage 1965-3-21 Orange Irvine Terrace. Newport Beach Comment
  RSA13106  Chaenactis glabriuscula var. lanosa Percy C. Everett 1935-5-17 6865 Orange Atwood, 7/8 miles E. S side of Santa Fe R. R tracks 152 Comment
  CDA21594  Chamaesyce albomarginata Mark A. Elvin, B. S. Herhus 2006-11-4 5255 Orange Southern Coastal; Huntington Beach; 1.5 km southwest of Wintersburg, southwest of junction Slater and Goldenwest; Shipley Nature Center. Comment
  RSA719411  Chamaesyce maculata Fred M. Roberts, Robert L. Allen 2006-10-8 6424 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  RSA2070  Chamaesyce polycarpa var. polycarpa C. B. Wolf 1931-3-6 s.n. Orange Trabuco Canyon, 1.5 mile below Trabuco Camp Grounds 549 Comment
  RSA576457  Chamaesyce polycarpa var. polycarpa F. W. Peirson 1924-5-31 s.n. Orange 5 miles southeast of Laguna Beach. Comment
  UCR141343  Chasmanthe aethiopica Robert DeRuff 1999-1 515 Orange Southern Coast, Newport Beach, Newport Back Bay, bluff below Eastbluff North, c. a third of the way down from the bluff top 6 Comment
  UCD137350  Cheilanthes newberryi Beecher Crampton 1963-5-7 6788 Orange Santa Ana Mountains, Lower San Juan Canyon, ca. 11 miles northeast of San Juan Capistrano, State Hwy. 74. Comment
  UC1543076  Chenopodium Donald G. Nelson 1936-5-29 428 Orange S. Grand Ave. s Buena Park; Bob Barnes Ranch Comment
  IRVC15079  Chenopodium album T. W. Mulroy 1973-3-20 Orange Bolsa Chica [Salt Marsh] Comment
  UCD97793  Chenopodium album Ira L. Wiggins 1966-5-25 20664 Orange Parkway along south side of Nutwood Lane, margin of CSCF campus, Fullerton. Comment
  CDA25888  Chenopodium ambrosioides Mark A. Elvin, B. S. Nerhus 2006-11-4 5246 Orange Southern Coastal; Huntington Beach; 1.5 km southwest of Wintersburg, southwest of junction Slater and Goldenwest; Shipley Nature Center. Comment
  IRVC21735  Chenopodium ambrosioides Fred M. Roberts 1984-10-18 1423 Orange San Juan Canyon, 2.5km ENE San Juan Guard Station; 4.0km WNW Sitton Peak, Santa Ana Mountains 310 Comment
  IRVC29696  Chenopodium ambrosioides Mark A. Elvin, Barry S. Nerhus 2006-11-4 5246 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  UCR46566  Chenopodium ambrosioides B. G. Pitzer, D. C. Hawks 1986-10-21 0351 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, c. 10 mi east of Santa Ana, in hills N and east of South Coast Gun Club on Jeffrey Road in Hicks Canyon 183 Comment
  POM122883  Chenopodium ambrosioides Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA734759  Chenopodium berlandieri A. C. Sanders, Fred M. Roberts 2008-5-6 35218 Orange Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  RSA264  Chenopodium berlandieri var. sinuatum J. T. Howell 1927-7-27 490 Orange Near ranch houses, Rancho Santa Ana 152 Comment
  HSC4384  Chenopodium californicum J. W. Johnson 1961-4-2 Orange Newport Beach, N slope overlooking Upper Newport Bay Comment
  RSA262  Chenopodium californicum J. T. Howell 1928-2-25 840 Orange Near Bee Canyon, Rancho Santa Ana. 152 Comment
  RSA678739  Chenopodium californicum Fred M. Roberts, Carol A. Roberts, Robert Allen 2003-5-11 5856 Orange Dana Point Headlands: 0.8km SSW Richard Henry Dana School north of Marguerita Drive 76 Comment
  UCSB52919  Chenopodium californicum Roberts, Jr., Fred 1983-3-10 Orange Dana Point Headlands; 0.4 km. W Dana Point Harbor; 0.7 km. S Richard Henry Dana School 80 Comment
  SBBG119932  Chenopodium macrospermum A. C. Sanders with M. A. Elvin 2003-11-9 27366 Orange San Joaquin Marsh adjacent to UC Irvine Arboretum, UC Irvine campus near intersection of Jamboree Blvd and Campus Drive 2 Comment
  UC536904  Chenopodium macrospermum var. halophilum L. M. Booth 1933-9-8 1390 Orange Anaheim Marsh; coast of Orange Co. Comment
  UC536977  Chenopodium macrospermum var. halophilum Lawrence M. Booth 1932-7-19 1289 Orange Bolsas Marsh Comment
  IRVC27496  Chenopodium murale Mark A. Elvin 2004-5-2 3403 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  IRVC387  Chenopodium murale B. Mawdsley 1965-3-30 Orange east bluff at Mar Vista. Newport Beach Comment
  RSA478560  Chenopodium rubrum L. M. Booth 1933-9-8 1390 Orange Anaheim Marsh. Comment
  IRVC25223  Chenopodium rubrum Roger Rienke 1988-10-30 2 Orange Newport Back Bay Newport Beach Comment
  UC729551  Chlorogalum pomeridianum var. pomeridianum Carl B. Wolf 1932-7-2 3828 Orange hillside 1/2 mi above La Vida Springs; Carbon Canyon 243 Comment
  CAS-BOT-BC191253  Chorizanthe fimbriata var. fimbriata P. C. Everett 1935-6-18 7197 Orange Santa Ana Mts., main divide motorway Los Pinos Potrero 914 Comment
  RSA0013863  Chorizanthe procumbens Fred M. Roberts 2012-5-10 7569 Orange San Joaquin Hills: Buck Gully, south tributary, north slope Pelican Hill, just north of Pelican Hills Drive, 0.7 km N Pelican Hill summit. 154 Comment
  SD134406  Chorizanthe procumbens Craig Reiser 1991-4-18 Orange Dana Point Headlands Comment
  UCR4086  Chorizanthe procumbens Carole Sims 1965-3-28 s.n. Orange South Coastal Plains, Salt Creek Road off Pacific Coast Highway, between South Laguna and Dana Point 18 Comment
  CAS-BOT-BC255256  Chorizanthe staticoides John Thomas Howell 1927-6-8 2455 Orange Southern Puente Hills in the Santa Ana Canyon 182 Comment
  UC1175013  Chorizanthe staticoides E. K. Balls 1958-6-26 23814 Orange Comment
  UCR56549  Chorizanthe staticoides Robert McKernan 1989-5-18 s.n. Orange Santa Ana Mtns Foothills, Serrano Creek, 4 km north of Trabuco Rd. at the end of Lake Forest Rd. 6 km east of El Toro Military Base 274 Comment
  UCR154287  Chrysanthemum coronarium Mark A. Elvin 2004-5-2 3407 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  UCD130550  Cirsium arvense P. B. Kennedy 1924-2-13 s.n. Orange Huntington Beach District. Comment
  SD143571  Cirsium occidentale var. californicum R. D. Goeden, D. W. Ricker 1965-6-21 Orange Dana Point 75 Comment
  RSA788908  Cirsium occidentale var. occidentale Fred M. Roberts 2008-6-26 7060 Orange Lomas de Santiago: Loma Ridge along West Loma Ridge Road, c.a. 1 km N Haul Rd., 2.5 km NNW Bee Peak, Irvine Ranch Land Conservancy. 382 Comment
  IRVC9095  Cirsium vulgare J. Turner 1966-3-9 35 Orange Warner Street. Huntington Beach Comment
  UCR109769  Cirsium vulgare R. D. Goeden, Don W. Ricker 1965-7-7 s.n. Orange Puente Hills, Brea Blvd. at Tonner Cyn. Rd., confluence of Brea and Tonner Canyons, NE edge of Brea 146 Comment
  CAS-BOT-BC172418  Clarkia bottae Steve Boyd; Tim Ross 1992-5-19 7441 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon from crossing of creek by Lucas Canyon Trail, downstream to confluence with aliso Canyon. 335 Comment
  CAS-BOT-BC172422  Clarkia bottae Carl B. Wolf 1932-7-2 3825 Orange Carbon Canyuon, 1/8 mi. below La Vida Springs 213 Comment
  UCR210037  Clarkia bottae R. E. Riefner Jr. 2000-6-30 20- 597 Orange Santa Ana Mountains, North Ranch Policy Plan Area, N Fremont Canyon at Donaldson Ranch, adjacent to powerline crossing on W fork of Fremont Cyn drainage 427 Comment
  RSA0059997  Clarkia bottae Karl Price 1988-5-21 48 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  UCR150923  Clarkia deflexa Valerie Soza, LeRoy Gross 1999-6-7 475 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 Comment
  RSA581440  Clarkia purpurea subsp. quadrivulnera Fred M. Roberts, Gordon Marsh 1989-5-12 4359 Orange Santa Ana Mountains: Santiago Canyon, Flemming Regional Park, just E of Modjeska at end of paved road, ca. 3.3 km WSW Laurel Springs. 430 Comment
  RSA708234  Clarkia rhomboidea Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6236 Orange Modjeska Peak, west slope along summit road, 0.15km by air W summit. 1613 Comment
  UCR193388  Claytonia parviflora A. C. Sanders, T. B. Salvato 2008-5-13 35330 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence 366 Comment
  UCR241067  Claytonia perfoliata Dick Newell, Don Millar, Gigi Logan 2013-3-19 319 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon Rd., 0.7 mi. east of Hicks Haul Rd. 261 Comment
  JEPS43343  Claytonia perfoliata subsp. perfoliata Alice King Apr 1908 Orange canyon above Orange County Park (Santa Ana); Santa Ana Comment
  RSA16489  Clematis lasiantha Percy C. Everett 1935-6-18 7218 Orange Santa Ana Mts: Summit of Santiago Peak. 1732 Comment
  UCR209671  Clematis pauciflora Fred M. Roberts 2008-4-16 6904 Orange South Coast, Dana Point Headlands, Center for Natural Lands Mgmt. Preserve, 0.8 km west of the Marine Institute, Dana Point Harbor 45 Comment
  RSA585183  Cleome isomeris D. Atwood 1993-3-27 17697 Orange Corona Del Mar State Park along Newport Coast Drive. 0 Comment
  RSA542395  Cneoridium dumosum Fred M. Roberts Jr. 1987-3-24 3271 Orange Laguna Beach: Goff Ridge, south of Nyes Place Rd., 0.9km NNE Goff Island. 169 Comment
  UCSB48359  Cneoridium dumosum Roberts, Fred 1982-6-30 Orange Laguna Niguel: Pacific Island Dr., Niguel Hill, 2.0km SE Aliso Peak; 1.3km E Bench Mark 133 39 Comment
  RSA0117446  Collinsia concolor A. C. Sanders, Fred M. Roberts 2008-4-22 35026 Orange Santa Ana Mtns.: Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado. 1200 Comment
  RSA33582  Collinsia heterophylla N. C. Cooper 1944-6-4 1361 Orange San Juan Canyon, lower camp ground. 457 Comment
  RSA649085  Collinsia heterophylla Karl Price 1988-4-29 12 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  RSA0018459  Collinsia heterophylla J. D. Olmsted 1959-5-1 532 Orange 100 yrds NW of Rattlesnake Rock. 0.75 mi N of Hidden Ranch in Black Star Canyon. 4-5 mi E of Irvine Lake Reservoir. Drainage area to Santa Ana River. 732 Comment
  POM15031  Comarostaphylis diversifolia subsp. diversifolia Mary F. Spencer 1932-05 1971 Orange Canyon Prope. 61 Comment
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Nov 19 2013
  RSA594812  Comarostaphylis diversifolia subsp. diversifolia Fred M. Roberts 1993-3-11 4881 Orange Laguna Beach: South Laguna , Upper Hobo Canyon, 1.4 km NNW Aliso Peak. 201 Comment
  UC2042141  Comarostaphylis diversifolia subsp. diversifolia R. F. Thorne with E. W. Lathrop, W. Wisura 1977-7-8 49607 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  CHSC116493  Comarostaphylis diversifolia subsp. diversifolia R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49607 Orange Santa Ana Mountains: Rocky ravine tributary to San Juan Canyon, along Ortega Highway(74) about 2 miles above San Juan Fire Station. Comment
  SEINET8584808 Image available Conium maculatum T. C. Arambula 1966-1 53 Orange Brea, Carbon Canyon Rd Comment
  CDA32186  Convolvulus arvensis T. McCrainie, Mark A. Elvin 2006-9-23 8 Orange Southern Coastal; San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; southwest edge, along San Diego Creek, north of University Drive, east of Highway 73. Comment
  IRVC963  Convolvulus arvensis J. Morgan 1965-3-12 Orange Corona del Mar High School. Newport Beach Comment
  IRVC966  Convolvulus arvensis L. McCabe 1965-4-13 Orange Corona del Mar. Newport Beach Comment
  POM312786  Convolvulus arvensis D. Taylor 1952-10 327 Orange South of Chino near C I M Comment
  RSA184134  Convolvulus arvensis I. L. Wiggins 1965-9-3 20317 Orange Roadside along Yorba Linda Boulevard, between State College Boulevard and Placentia Avenue, Fullerton. Comment
  UCSB6907  Convolvulus arvensis Haller, Norman 1953-4-25 Orange U.S. 101, 3 miles northwest of Laguna Beach Comment
  RSA38434  Convolvulus simulans E. L. Paddock 1943-5-3 s.n. Orange Graham & Loftus Oil Corp., 1 mile E of Brea Comment
  RSA831  Conyza bonariensis J. T. Howell 1927-9-24 755 Orange Santa Ana Botany Garden 152 Comment
  CAS-BOT-BC286165  Conyza canadensis Ira L. Wiggins 1965-10-24 20286 Orange At corner of Yorba Linda Blvd. and State College Blvd., Fullerton Comment
  RSA835  Conyza canadensis J. T. Howell 1927-9-24 743 Orange Santa Ana Botany Garden 152 Comment
  RSA5968  Conyza canadensis C. B. Wolf 1932-9-13 4041 Orange Bryant Ranch, dike at east side of San Gabriel River Flood Control, at North boundary of ranch 6 Comment
  IRVC22979  Conyza coulteri Karlin G. Marsh 1986-12-8 none Orange Yorba Linda; Santa Ana Canyon, Santa Ana River, Featherly Park. Santa Ana Mountains Comment
  UCR80037  Conyza coulteri Scott D. White 1992-10-20 970 Orange Vicinity of city of Brea, Immediately north of Carbon Canyon Rd & east of Placentia Avenue +-1mi (air) SSEof Tonner Canyon. 183 Comment
  SEINET4675783  Cordylanthus maritimus Robert F. Thorne 1975-1 Orange Comment
  RSA0135556  Cordylanthus maritimus subsp. maritimus David E. Bramlet 2005-7-1 3888 Orange Upper Newport Bay, west side of the Bay approximately 61m east of the end of Mariners Drive. Some 611m NW of the Big Canyon area. 0 Comment
  RSA486865  Cordylanthus maritimus subsp. maritimus P. R. Atsatt 1971-6-15 s.n. Orange Newport Beach, Back Bay Comment
  UC284871  Cordylanthus rigidus subsp. setiger P. A. Munz 1923-9-7 7745 Orange Santiago Peak Santa Ana Mts. 1645 Comment
  RSA506432  Cordylanthus rigidus subsp. setiger Kathy Harper 1988-7-16 s.n. Orange Cleveland National Forest, on Hwy 74 near El Cariso. SE of Hwy Comment
  CAS-BOT-BC287839  Coreopsis californica P. A. Munz No date on label 3814 Orange Santa Ana River Canyon, near RIncon 304 Comment
  CAS-BOT-BC101294  Corethrogyne filaginifolia John Thomas Howell 1927-9-24 3106 Orange on n. s. of Santa Ana [Canon] Canyon 152 Comment
  JEPS41844  Corethrogyne filaginifolia L. M. Booth 1932-7-29 1332 Orange Newport Bay Comment
  UCSB52942  Corethrogyne filaginifolia Roberts, Fred 1983-11-4 Orange Santa Ana Mtns.; between Flacon and Blue Jay campgrounds; along Main Divide Truck Trail, 2.1 km. ESE Los Pinos Peak 1090 Comment
  RSA703091  Corethrogyne filaginifolia var. virgata Fred M. Roberts, Arthur Davenport 2003-9-11 6004 Orange Rancho Mission Viejo: Donna O' Neill Land Conservancy. Cristianitos Cyn., 0.79 km N Sycamore Gate 0.23 km w of Crisianitos Road. 126 Comment
  RSA699122  Coriandrum sativum Anonymous 1937-4-20 s.n. Orange Near El Modena. Comment
  CAS-BOT-BC291359  Cotula coronopifolia L. Street 1917-5-12 1928 Orange San Juan Capistrano Comment
  IRVC16765  Cotula coronopifolia J. B. Anderson 1966-4-16 582 Orange Newport Beach; Corona del Mar; Buck Gully; "Little Corona Beach"; moist canyon bottom with small brooklet near stream. Southern Coastal 0 Comment
  RSA719413  Cotula coronopifolia Fred M. Roberts, Robert L. Allen 2006-10-8 6434 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  UCR100452  Cotula coronopifolia B. G. Pitzer 1996-4-30 2774 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCD130912  Cotula coronopifolia Ronni Stachelek; Bob Anderson 1995-3-23 50 Orange Newport Beach, Upper Newport Bay, Back Bay Drive, ca. 150 m. north of San Joaquin Drive. Comment
  RSA0096944  Crassula connata Scott D. White 1998-3-24 6234 Orange University of California, Irvine Campus: Site of proposed Research Park. Southwest of main campus circle, ca. halfway between Beerkeley Avenue and new freeway (Bonita Canyon). 36 Comment
  RSA348  Crassula connata var. erectoides J. T. Howell 1928-2-7 s.n. Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  IRVC25205  Cressa truxillensis Fred M. Roberts 1986-11-4 3198 Orange Anaheim Bay, north of Hog Island, Seal Beach Naval Weapons Station 0 Comment
  RSA0093742  Cressa truxillensis Fred M. Roberts 2014-4-21 7848 Orange South Coast. SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin. 113 Comment
  RSA234516  Cressa truxillensis James Henrickson 1970-7-25 5055 Orange 2 miles NE of Huntington Beach near north end of Bolsa Chica Salt Marsh. 0 Comment
  RSA556  Cressa truxillensis J. T. Howell 1927-6-30 249 Orange Bryant Ranch near Long Beach. 15 Comment
  RSA593876  Cressa truxillensis R. E. Riefner 1995-4-28 95 -115 Orange San Clemente State Beach. Comment
  UCR158164  Cressa truxillensis Adrian Wolf 1998-5-27 333 Orange South Coast, Newport Slough, south of oil fields, between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 2 Comment
  UCR258351  Cressa truxillensis Fred M. Roberts 2014-4-21 7848 Orange South Coast, SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin 113 Comment
  UCR208860  Cressa truxillensis var. vallicola L. C. Wheeler 1932-6-25 0864 Orange Coastal Plains and Basins; Los Angeles Basin region, Newport Bay 0 Comment
  IRVC25466  Croton californicus Fred M. Roberts 1987-4-21 3381 Orange Aliso Creek, Aliso Creek Bike Trail, 3.0km ENE Moulton Peak, Aliso Viejo 73 Comment
  UCR193030  Croton californicus A. C. Sanders, Fred M. Roberts 2008-6-17 35518 Orange Peninsular Range; Santa Ana Mtns., middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  UCR228773  Croton setiger Dick Newell, Don Millar 2011-5-24 166 Orange Peninsular Range; Santa Ana Mtns., above Outdoor Education Center on MWD service road, 1.6 miles NW (311 deg. ) of Irvine Lake dam 244 Comment
  RSA640  Cryptantha clevelandii J. T. Howell 1928-2-25 837 Orange Near Bee Canyon, Rancho Santa Ana. 152 Comment
  RSA586740  Cryptantha clevelandii R. E. Riefner 1994-5-22 94 -379 Orange W Terrce area of San clemente State Beach along Calafia road. Comment
  UCR263635  Cryptantha clevelandii var. clevelandii Ed Kentner 2012-4-24 130 Orange Peninsular Range: Santa Ana Mountains, Lomas De Santiago, El Toro property 200 Comment
  RSA0094684  Cryptantha clevelandii var. hispidissima C. B. Wolf 1932-3-8 2687 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  IRVC255  Cryptantha intermedia C. Hinesly Orange Trabuco Canyon Santa Ana Mountains Comment
  RSA0013857  Cryptantha intermedia Fred M. Roberts 2012-5-10 7563 Orange San Joaquin Hills: Buck Gully, S Fork, north slope Pelican Hill, 0.6 km N summit Pelican Hill, north of Pelican Hill Drive. 183 Comment
  POM13831  Cryptantha microstachys P. A. Munz 1922-4-28 5042 Orange Leach Canyon, Santa Ana Mountains 670 Comment
  RSA732085  Cryptantha microstachys A. C. Sanders, Fred M. Roberts 2008-3-25 34530 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA1698  Cryptantha muricata C. B. Wolf 1931-3-6 1839 Orange Trabuco Canyon, 1/2 mile above Trabuco Oaks, west slope of Santa Ana Mountains. 457 Comment
  UCR191005  Cryptantha muricata A. C. Sanders, Fred M. Roberts 2008-4-22 35024 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  RSA0079432  Cryptantha muricata var. jonesii A. C. Sanders, Fred M. Roberts 2008-4-22 35024 Orange Santa Ana Mtns.: Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado. 366 Comment
  RSA0079566  Cryptantha muricata var. jonesii Fred M. Roberts, Carol A. Roberts, Kirsten Winter 1995-5-6 4939 Orange Santa Ana Mountains: Ridge between Hot Springs Canyon and Viejo Canyon, San Juan Trail, 3.4 km WNW lower San Juan Picnic Ground. 546 Comment
  IRVC20157  Cryptantha muricata var. muricata R. L. Allen 1977-4-16 Orange 0.7km N La Novia bridge; west of water path. San Juan Capistrano Comment
  IRVC20159  Cryptantha muricata var. muricata R. L. Allen 1977-4-19 Orange [San Juan Canyon], Ortega Hwy, road side 111, 1.5[mi E] San Juan Guard Station. Santa Ana Mountains Comment
  RSA39346  Cucurbita digitata E. L. Paddock 1948-6-16 12734 Orange N of Sante Fe Railroad Tracks opposite Yorba Cemetery Comment
  IRVC18321  Cucurbita foetidissima J. W. Johnson 1976-8-2 Orange Upper [Newport] Bay. Newport Beach Comment
  RSA0027425  Cucurbita foetidissima Fred M. Roberts 2013-7-18 7659 Orange San Joaquin Hills: Newport Beach, Buck Gully, along Buck Gully Trail, about 0.7 km from the north terminus of Poppy Street and 1.8 km WNW summit of Pelican Hill. 52 Comment
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Mar 6 2019
  UCR247894  Cucurbita foetidissima Fred M. Roberts 2012-7-18 7659 Orange SAN JOAQUIN HILLS: Newport Beach, Buck Gully, along Buck Gully Trail, about 0.7 km from the north terminus of Poppy Street and 1.8 km WNW summit of Pelican Hill 52 Comment
  IRVC19540  Cupressus forbesii Karlin G. Marsh 1982-7-30 Orange Coal Canyon, west slope, at Claymont Clay Mine. Santa Ana Mountains Comment
  POM11894  Cupressus forbesii Philip A. Munz, I. M. Johnston 1922-5-18 5566 Orange Santa Ana Mts. Santa Ana River Canyon. Alluvial soil along canyon, 2d large canyon south of Orange County line. Comment
  RSA14145  Cupressus forbesii R. C. Bacigalupi 1935-6-22 2354 Orange Head of Clay Mine Canyon on drainage of Santa Ana River, northern end of Santa Ana Mountains Comment
  RSA2918  Cupressus forbesii B. D. Stark 1931-6-10 2247 Orange Claymine Canyon, north end of Santa Ana Mts. 198 Comment
  RSA648664  Cupressus forbesii Richard E. Riefner 2000-8-3 20 -708 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road and E of Windy Ridge main cypress forest 542 Comment
  RSA713906  Cupressus forbesii Richard E. Riefner 2005-4-15 5 -202 Orange Santa Ana Mountains, Gypsum Canyon, S end of Gypsum Canyon Rd., S of 91-Freeway. 160 Comment
  RSA7202  Cupressus forbesii B. D. Stark 1933-3-17 4532 -B Orange Claymine Canyon, Santa Ana Mts. 609 Comment
  UC1281345  Cupressus forbesii H. E. McMinn 1935-6-22 3926 Orange at head Clay Mine Canyon (n end of Santa Ana Mts.); Santa Ana Mts., Clay Mine Canyon Comment
  UCR132994  Cupressus forbesii Adrian Wolf 2000-6-1 469 Orange Santa Ana Mtns., North Ranch Policy Plan Area, West Fremont Canyon 534 Comment
  NY16679  Cupressus guadalupensis var. forbesii L. Abrams 1933-10-8 13653 Orange This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  UC1925890  Cuscuta Donald G. Nelson 1936-6-5 437 Orange Hills NE of Fullerton. 91 Comment
  CAS-BOT-BC224408  Cuscuta californica John Thomas Howell 1927-6-3 2420 Orange Southern Puente Hills in the Santa Ana Canon [Canyon] 152 Comment
  RSA409692  Cuscuta californica Albert J. Perkins 1913-2-9 s.n. Orange Peralta. Comment
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Jun 16 2012
  RSA542644  Cuscuta californica Fred M. Roberts, Kathy Keane 1988-5-25 3980 Orange Rancho Mission Veijo: Lower Canada Chiquita, 2.5 kilometers SSE Medium Rancho Survey Marker. 85 Comment
  POM201678  Cuscuta ceanothi L. M. Booth 826 Orange Santa Ana Canyon. Comment
  RSA708819  Cuscuta pentagona Fred M. Roberts, Robert L. Allen, Chris Barnhill, Carol A. Roberts 2005-4-10 6170 Orange Bolsa Chica Salt Marsh: along Pacific Coast Highway, trail NW of parking area, c.a. 2.2km SE jct. Warner Street and 1.6km SE Chica Bench Mark. 2 Comment
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Jan 2 2017
  SD175815  Cuscuta subinclusa D. G. Kelch 2006-12-9 06 558 Orange Irvine. University Dr. along tidal creek just E of I-73. 9 Comment
  UCR108380  Cycloloma atriplicifolium L. C. Wheeler 1946-9-28 6377 Orange Newport Bay: Near Point where main coast highway [Hwy 1?]crosses 2 Comment
  UCR66997  Cycloloma atriplicifolium A. C. Sanders 1990-10-6 10203 Orange Newport Bay, North Star County Beach Area on the SW end of the Bay, c. 2 km inland of Hwy 1. 3 Comment
  RSA30240  Cynara cardunculus subsp. flavescens Elisabeth Norland 1942-8-12 11296 Orange 2 miles SW of Costa Mesa near jct of 17th Street and Hwy 101. Comment
  IRVC29808  Cynodon dactylon Laura D. Lyons, Mark A. Elvin 2006-9-23 422 Orange San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; SW edge, along San Diego Creek, N of University Drive, E Hwy 73. Southern Coastal 2 Comment
  RSA5809  Cynodon dactylon C. B. Wolf 1932-6-28 3773 Orange Bryant Ranch: along western half of north boundary of 40 acre Valencia orange grove at Bryant Ave. and Hansen Road. 9 Comment
  RSA6041  Cyperus eragrostis Carl B. Wolf 1932-6-13 3721 Orange Fullerton, Rose Drive 53 Comment
  RSA697521  Cyperus esculentus Minor Warne 1934-5-13 s.n. Orange Talbert Drainage. Comment
  RSA708531  Cyperus involucratus Fred M. Roberts, Robert L. Allen, Chris Barnhill 2004-8-21 6108 Orange Caspers Wilderness Park, San Juan Cyn., Old San Juan Hot Springs, c.a. 0.4km SW San Juan Ranger Station, north of SR 74. 214 Comment
  UCR258624  Cyperus involucratus Fred M. Roberts 2014-7-25 7885 Orange South Coast, SAN JOAQUIN HILLS: Upper Laguna Canyon, Laguna Lake 1 (Upper Laguna Lake), north basin, c.a. 5.1 kn ENE summit Signal Hill. Laguna Coast Wilderness Park 113 Comment
  RSA542518  Cyperus involucratus Fred M. Roberts, W. R. Ferren 1987-4-8 3363 Orange Upper Newport Beach Back Bay, west side, North Star Beach, 0.8 km N Coney Island. 0 Comment
  RSA5913  Cyperus laevigatus Carl B. Wolf 1932-7-2 3814 Orange Carbon Canyon, 1/8 mile below La Vida Springs [La Vida Mineral Springs]. 21 Comment
  RSA5915  Cyperus laevigatus Carl B. Wolf 1932-7-2 3812 Orange Carbon Canyon, 1/8 mile below La Vida Springs [La Vida Mineral Springs]. 21 Comment
  JEPS64086  Cyperus niger L. M. Booth 1932-7-19 1287 Orange Bolsas Creek Comment
  UCR64632  Cyperus niger F. W. Peirson 1924-10-19 5231 Orange Wintersberg. Comment
  RSA77  Cyperus niger var. capitatus J. T. Howell 1927-7-19 439 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  RSA713567  Cyperus odoratus R. E. Riefner Jr. 2005-7-9 5 -551 Orange City of Huntington Beach, Huntington Central Park, Goldenwest St. near Slater Ave. 2 Comment
  RSA739272  Cyperus retrorsus R. E. Riefner 2007-9-14 07 -396 Orange Orange County: City of Orange, Santa Ana River at Taft St. alt 196ft 60 Comment
  CAS-BOT-BC538088  Cyrtomium falcatum R. E. Riefner, Jr. 2012-2-2 12 -19 Orange City of Dana Point, cliff and rocky intertidal area N 0.2 mi of Salt Creek lagoon 8 Comment
  RSA0106895  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-26 12 -11 Orange City of Laguna Beach, Aliso Creek Beach 2 Comment
  UCR240193  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-26 12- 11 Orange South Coast, city of Laguna Beach, Aliso Creek Beach 2 Comment
  CAS-BOT-BC190451  Dactylis glomerata Carl B. Wolf 1932-6-13 3715 Orange Fullerton, Rose Drive. 53 Comment
  RSA539378  Dactylis glomerata Fred M. Roberts 1988-6-9 4080 Orange Santa Ana Mountains: Modjeska Peak, 0.9km SW summit., 3730500mN, 449000mE 1542 Comment
  CAS-BOT-BC402178  Datisca glomerata R. F. Thorne; E. W. Lathrop; W. Wisura 1977-7-8 49563 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  RSA603365  Datisca glomerata Scott D. White, B. Leatherman 1997-6-12 5341 Orange East of San Juan Capistrano: San Juan Creek between Highway 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi E of I-15 / Hwy 74 junction. 46 Comment
  UCR261692  Datisca glomerata Dick Newell, Judy Booth 2014-5-15 379 Orange Peninsular Range; Santa Ana Mtns., Modjeska Canyon, 0.3 mi. east of Tucker Wildlife Sanctuary, 1.75 miles SSW of Flores Peak 434 Comment
  SEINET8724906 Image available Datisca glomerata F. R. Fosberg 1931-1 S 5151 Orange Silverado Can. , Santa Ana Mts, Orange Co. Comment
  RSA20216  Datura stramonium E. R. Johnson 1938-5-14 9409 Orange Rancho anta Ana, Santa Ana Canyon S. of pump house E. of ranch houses. 122 Comment
  RSA184130  Datura wrightii I. L. Wiggins 1965-10-27 20303 Orange Roadside and along creek bank, just SW of Los Angeles Co. line, on Brea Canyon Rd. Comment
  RSA695  Datura wrightii J. T. Howell 1927-7-5 264 Orange Near ranch Lowers, Rancho Santa Ana. Comment
  UCR16393  Datura wrightii Kenneth Hibberd 1966-4-30 660430- 4 Orange 0.5 mi S on Mohler Rd. in the Santa Ana Canyon, 5 mi west of Riverside Co. 244 Comment
  POM6363  Daucus pusillus P. A. Munz, L. T. Street, G. Williams 1919-5-3 2666 Orange Santa Ana River Canyon. Comment
  UCD127408  Daucus pusillus Lawrence M. Booth 1932-5-12 1033 Orange Newport Bay. Comment
  RSA703199  Deinandra paniculata R. E. Riefner Jr. 2004-7-6 04 -302 Orange Upper Chiquita Canyon, vicinity of Oso Pkwy. and SR-241. 224 Comment
  CAS-BOT-BC9091  Delphinium cardinale B. D. Stark 1931-6-6 2231 Orange Rancho Santa Ana 137 Comment
  RSA5931  Delphinium cardinale Carl B. Wolf 1932-7-2 s.n. Orange Carbon Canyon, 1/8 mile below La Vida Springs 213 Comment
  UC729868  Delphinium cardinale Carl B. Wolf 1932-7-2 3821 Orange 1/8 mi below La Vida Springs; Carbon Canyon 213 Comment
  RSA663162  Dendromecon rigida R. E. Riefner 2000-6-26 20 -578 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and W of Black Star Canyon Road at powerline tower. 631 Comment
  UCR252203  Dendromecon rigida Amanda C. Swanson 2013-4-21 25 Orange Peninsular Range; Santa Ana Mtns., hiking trail across from Tucker Wildlife Sanctuary, less than 0.1 mi. from trailhead 434 Comment
  RSA16474  Dendromecon rigida subsp. rigida Percy C. Everett 1935-6-19 7233 Orange Santa Ana Mtns.; Main Divide Motorway; 7mi. from summit Santiago Peak (se) 1280 Comment
  RSA723969  Deschampsia danthonioides R. E. Riefner 1998-5-15 98 -328 Orange San Clemente State Beach, mima mound field in SW corner of park. 27 Comment
  UCR211966  Descurainia pinnata Dick Newell, Don Millar 2010-2-23 001 Orange South Coast, Serrano Ridge, 3 mi west of Laguna Hills, 0.67 mi west of Languna Canyon Road, east of Shady Canyon 244 Comment
  RSA689542  Descurainia pinnata subsp. halictorum R. E. Riefner 1999-5-22 99 -291 Orange City of Dana Point, beach west of Pacific Coast Hwy. South of Salt Creek near Ritz Carlton Hotel. USGS Quad: dana Point. 15 Comment
  RSA588707  Dicentra chrysantha Fred M. Roberts, Carol A. Roberts 1990-5-23 4643 Orange West Fork, Upper Long Canyon, near Main Divide Truck Trail, 4.5km SE Los Pinos Peak. 756 Comment
  RSA627532  Dicentra chrysantha Sandy Leatherman, Fred M. Roberts, B. Leatherman, Trish Smith 1998-5-23 16 Orange Black Star Canyon: Spur Road off of Black Star Canyon Road. 335 Comment
  UCR158040  Dichondra occidentalis Adrian Wolf 1998-5-15 288 Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 Comment
  SEINET10719725  Dicksonia David B. Dunn 1971-8-13 Dunn 18125 Orange Cultivated plants vicinity of Laguna Beach. Comment
  RSA562808  Digitalis purpurea Steve D. Boyd, Tim S. Ross 1992-5-20 7480 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon, along foot trail upstream from end of old roadgrade to upper homestead (corrugated steel building). 350 Comment
  RSA528053  Digitaria ciliaris A. C. Sanders 1990-10-6 10181 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Highway 1. 1 Comment
  RSA731938  Digitaria ciliaris Fred M. Roberts, Sandy Leatherman 2007-11-27 6697 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. ca. 0.3 km S Fairmont Blvd. 118 Comment
  CAS-BOT-BC209074  Digitaria sanguinalis Ira L. Wiggins 1965-10-2 20268 Orange Curbway, at corner of Longview Dr. and Dorothy Lane, Fullerton Comment
  UCR246473  Dimorphotheca fruticosa R. E. Riefner Jr. 2011-7-1 11- 79 B Orange South Coast, city of Newport Beach, beach area between Shorecliff Road and Cameo Shores Road 18 Comment
  SD220026  Diplachne fusca var. uninervia Mark A. Elvin 2004-5-2 3420 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW UC Irvine campus center. 3 Comment
  SBBG6929  Diplacus X australis M. Van Rensselaer 1944-11-26 1875 Orange Laguna Cyn, ca. 2 mi NE of Laguna Beach Comment
  CHSC42169  Diplacus australis L. A. Hinman 1986-3-22 5 Orange Ca. 6 mi nw of San Juan Capistrano, Bell Canyon, 2 mi n of Hwy 74. Ca. 65 yds e of Bell Creek. 128 Comment
  SD255235  Diplacus longiflorus R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49795 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  SBBG103894  Diplacus puniceus B. Pitzer, S. Hemstreet 1992-5-27 1965 Orange USFS Rd 3S04 to Blue Jay Group Cmpgrd, off St Hwy 74, ca. 2 air mi W of El Cariso Cmpgrd 762 Comment
  RSA16979  Diplotaxis muralis P. C. Everett 1936-3-20 7762 Orange Rancho Santa Ana, Santa Ana canyon from Botanic Garden, W of Adm bldg 198 Comment
  SDSU2450  Diplotaxis muralis D. F. Howe 1977-5-23 4951 Orange Corner of Empire & Broadway, Anaheim. Comment
  CAS-BOT-BC43566  Diplotaxis tenuifolia I. M. Johnston 1918-5-4 1927 Orange Santa Ana. Comment
  CAS-BOT-BC208626  Distichlis spicata Bernard G. G. de Retz 1961-5-16 47611 Orange Huntington Beach Comment
  IRVC24786  Draba cuneifolia var. integrifolia Karlin G. Marsh 1989-3-4 Orange Lomas Ridge, ridge between Hicks and Rattlesnake Canyons. Lomas de Santiago 210 Comment
  RSA701656  Drymocallis glandulosa Keith E. Hoffmaster 1935-5-5 s.n. Orange San Juan Canyon., Santa Ana Mts. Comment
  HSC46674  Drymocallis glandulosa var. glandulosa Christopher Davidson 1977-5-18 5633 Orange Cleveland National Forest, Falcon campground 1006 Comment
  RSA722384  Drymocallis glandulosa var. wrangelliana Mabel Harvey s.n. Orange Trabuco Canyon. Comment
  POM366539  Drymocallis glandulosa var. wrangelliana Christopher Davidson 1977-5-18 5633 Orange Santa Ana Mts. Cleveland National Forest, Falcon campground 1006 Comment
  IRVC20515  Dryopteris arguta Fred M. Roberts 1983-9-26 1120 Orange Lion Canyon, Chiquito Basin Trail, 3.3km NNE Lower San Juan Picnic Ground; 4.3km SSE Los Pinos Peak. Santa Ana Mountains 810 Comment
  IRVC23909  Dryopteris arguta Fred M. Roberts, R. L. Allen 1985-8-19 2136 Orange Mission Viejo: lateral to Engilish Canyon along Vista de Lago Drive; 3.4km ENE El Toro Fire Station. Southern Coastal 218 Comment
  UCR174212  Dryopteris arguta A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33039 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  IRVC21221  Dryopteris arguta Fred M. Roberts 1984-3-9 1248 Orange Wagon Whell Regional Park: cyn 2.9 km NE Median Rancho Survey Mark; 1.6 km NW bench Mark 422. Southern Coastal 165 Comment
  CAS-BOT-BC428263  Dudleya edulis Reid Moran 1949-5-28 3257 Orange Aliso Canyon, Laguna Beach Comment
  POM48463  Dudleya edulis F. W. Peirson 1924-5-31 4674 Orange 5 miles southeast of Laguna Beach. Comment
  UC933205  Dudleya edulis Reid Moran 1950-4-24 3389 Orange San Clemente Comment
  JEPS49887  Dudleya lanceolata John Thomas Howell 1927-7-3 2637 Orange Claymine Canyon Santa Ana Mtns Comment
  RSA83424  Dudleya lanceolata F. W. Peirson 1924-5-31 4673 Orange 5 miles southeast of Laguna Beach. Comment
  SEINET3089229 Image available Dudleya lanceolata Cesareo Perez 1971-5-18 22 Orange S. Mesa Dr. & Lemon St., Villa Park. Comment
  UC1090403  Dudleya lanceolata Milo S. Baker 1958-5-20 13302 Orange Newport Bay Comment
  CAS-BOT-BC411402  Dudleya lanceolata Theodore W. Minthorn 1924-5-30 s.n. Orange Pt. San Juan Comment
  RSA5410  Dudleya lanceolata C. B. Wolf 1932-12-16 1681 Orange At bar of plumes 0.5 mi. from Skyline Drive on firebreak road to Sierra Peak, Santa Ana Mts. Alt. 2500-3000 ft. 762 Comment
  UCSB48002  Dudleya lanceolata Roberts, Fred 1980-7-11 Orange Santa Ana Mtns.: Viejo Canyon; 3.0 km. ENE San Juan Guard Station; 0.6 km. N Hwy. 74 353 Comment
  RSA0015002  Dudleya multicaulis Fred M. Roberts 2008-5-14 6971 Orange Lomas de Santiago: Loma Ridge, summit of Bee Peak and 3.9 km E Rattlesnake Canyon Reservoir dam. Irvine Ranch Conservancy. 533 Comment
  RSA397817  Dudleya multicaulis Anstruther Davidson 1908-5-1 1983 Orange Corona del Mar Comment
  RSA542640  Dudleya multicaulis Fred M. Roberts, Kathy Keane 1988-5-25 3994 Orange Rancho Mission Veijo: Lower Canada Chiquita, 2.0km SSE Medium Rancho Survey Marker. 91 Comment
  RSA584711  Dudleya multicaulis Fred M. Roberts 1989-6-7 4377 Orange Santa Ana Mountains: Upper Gypsum Canyon along ridge between Gypsum and Blind Canyon, c. 6.3 km WSW Sierra Peak. 411 Comment
  SD45412  Dudleya multicaulis Reid Moran 1950-5-24 3412 Orange Brushy slopes of Laguna Canyon 1.5 miles above the mouth. Comment
  UC1015322  Dudleya multicaulis Reid Moran 1950-5-24 3412 Orange 1.5 mi above mouth of Laguna Canyon; Laguna Canyon Comment
  UCR37776  Dudleya multicaulis Steve Boyd, L. F. LaPre 1981-5-27 s.n. Orange Santa Ana Mtns., Northern end of the Santa Ana Mtns., along powerline road on ridges east of Weir Canyon & at the head of Gypsum Canyon. Comment
  UCR37798  Dudleya multicaulis Steve Boyd 1981-5-13 s.n. Orange South Coast, Pelican Hill, Irvine Ranch Property, San Joaquin Hills south of Corona del Mar 218 Comment
  UC2059974  Dudleya multicaulis K. Nakai 1978-2-5 214 Orange Laguna Beach, above Laguna High School, 100 yards from the ed of Pacific Avenue. Comment
  RSA397822  Dudleya pulverulenta M. B. Dunkle 1934-6-18 3980 Orange San Juan Canyon Comment
  UCR222628  Dudleya pulverulenta T. B. Salvato 2010-10-27 5103 Orange South Coast, Dana Point Headlands, Harbor Point Park, south of Scenic Dr. and Cove Rd., beyond the end of Green Lantern St., overlooking Dana Point Harbor 70 Comment
  UCR24651  Dudleya pulverulenta John C. Roos 1965-6-16 s.n. Orange Dana Point Comment
  RSA0002523  Dudleya stolonifera Reid V. Moran 1948-6-23 3095 Orange North-facing cliff near mouth of Aliso Canyn, south of Laguna Beach 8 Comment
  CAS-BOT-BC109768  Dudleya viscida J. C. Nevin 1885-1-1 4 Orange San ? Hot Springs. (The locality for this plant is probably Hot Springs, San Juan Capistrano and in Orange county.) Comment
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Jan 4 2018
  RSA715245  Dudleya viscida A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33053 Orange San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 366 Comment
  SFV10403  Dudleya viscida M. L. Vincent 1963-7-8 435 Orange Roadside, 5 miles east of San Juan Capistrano on Highway 74. Comment
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Jan 6 2018
  UCSB48031  Dudleya viscida Roberts, Fred 1980-7-7 Orange Santa Ana Mtns.; San Juan Canyon, Hwy. 74, 2.3 km. ENE San Juan Guard Station; 0.4 km. W of Bench Mark 1100 315 Comment
  UCSB50636  Dudleya viscida Roberts, Fred 1982-7-9 Orange Santa Ana Mtns.; San Juan Canyon, Hwy. 74, 1.4 km. by road E San Juan Guard Station; 4.6 km. W Sitton Peak 275 Comment
  CAS-BOT-BC197174  Echinochloa crus-galli Ira L. Wiggins 1965-9-26 20254 Orange In Carbon Canyon about 3.5 mi. above its mouth Comment
  RSA234531  Echinochloa crus-galli James Henrickson 1970-7-25 5088 Orange 3.5 miles NW of Huntington Beach growing along graded inner slope of East Garden Grove-Wintersburg Flood Control Channel near Bolsa Chica Salt Marsh. 1 Comment
  RSA532554  Echinodorus berteroi David E. Bramlet 1990-10-17 2063 -1 Orange Newport Beach: Delhi Channel at the intersection of Irvine Ave. and Mesa Drive just west of Newport Beach Golf Course. 6 Comment
  UC814517  Echinodorus berteroi I. M. Johnston 1918-9-3 2151 Orange Laguna Canyon San Joaquin Hills, Laguna Canyon 106 Comment
  UCR113444  Echinodorus berteroi R. E. Riefner Jr. 2000-8-21 20- 728 Orange Santa Ana Mountains: Irvine Lake [Santiago Reservoir], first cove southeast of the dam 238 Comment
  UCR207559  Echinodorus berteroi O. F. Clarke 2004-7-19 s.n. Orange South Coast, Talbert Regional Park, Costa Mesa, at end of 19th St. 3 Comment
  SEINET10456473  Echium Chester T. Dziekanowski, David B. Dunn; Charlene A. Bennett 1976-7-21 Dziekanowski 2416 Orange Collected around the condominium-Pacific Island Estates in Laguna Niguel. Comment
  RSA753028  Eclipta prostrata A. C. Sanders, Fred M. Roberts 2008-9-18 36069 Orange Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 320 Comment
  RSA689384  Ehrharta calycina Scott D. White, Michael Honer 2003-6-12 9542 Orange Rancho Mission Viejo. Upper end of Trampas Canyon. 152 Comment
  RSA588991  Ehrharta calycina D. E. Bramlet 1994-6-2 2382 Orange San Joaquin Hills. Emerald Canyon 4.4 kilometers north of Pacific Coast Highway.. Laguna Beach 75 USGS Quad: 37 16 180m N X 4 27 820m E. 226 Comment
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Sep 8 2018
  OBI82200  Ehrharta erecta Unknown 2012-2-1 12 -15 Orange City of Dana Point, Dana Point Harbor, vicinity of Puerto Pl. and Dana Point Harbor Drive 2 Comment
  RSA731006  Ehrharta erecta Fred M. Roberts, B. Allen 2007-1-19 6508 Orange Mission Viejo: 23012 Via San Gabriel. Irrigated urban landscaping. 230 Comment
  RSA724074  Ehrharta erecta R. E. Riefner 1999-8-21 99 -362 Orange Laguna Beach, west of Pacific Coast Hwy., vicinity of Aliso Creek Park and south to West Drive. 0 Comment
  UCR195019  Eleocharis A. C. Sanders, Fred M. Roberts 2008-8-7 35979 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  RSA799624  Eleocharis acicularis Justin M. Wood 2011-4-12 3664 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  RSA697522  Eleocharis acicularis Elisabeth Norland 1929-4-11 s.n. Orange Cypress. Comment
  SD234737  Eleocharis montevidensis A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33003 Orange Peninsular Range; Santa ana Mtns.: San Juan Canyon, from Lower San Juan Picnic Area to ca. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line. Canyon bottom. 366 Comment
  POM1361  Eleocharis palustris Phillip A. Munz 1918-5-4 2210 Orange Laguna Beach. Comment
  POM202156  Eleocharis palustris L. M. Booth 1932-5-15 1202 Orange Costa Mesa. Comment
  RSA0027434  Eleocharis palustris Fred M. Roberts 2012-7-18 7674 Orange San Joaquin Hills: Newport Beach, Buck Gully, Buck Gully Trail, west end, just east of north terminus, of Poppy Street and 2.1 km WNW summit of Pelican Hill. 37 Comment
  UCD169812  Eleocharis parishii R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49571 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Along San Juan Creek. 433 Comment
  RSA735119  Eleusine coracana subsp. africana R. E. Riefner 2006-10-8 6 -474 Orange City of Irvine, San Diego Creek, between Alton Pwky. and 405 Fwy 51 Comment
  RSA735122  Eleusine coracana subsp. africana R. E. Riefner 2006-10-4 6 -477 Orange City of Huntington Beach, along Slater Ave. near Goldenwest St. 11 Comment
  RSA542551  Eleusine indica Fred M. Roberts 1987-8-19 3587 Orange Santa Ana River: adjacent to Fountain Valley, Harbor Bridge. 13 Comment
  RSA725461  Eleusine indica Fred M. Roberts 2007-8-6 6556 Orange San Joaquin Hills: Laguna Beach, Laguna Cyn. on east side of Laguna Cyn. Rd. adj. to dog park, 1.2 km S (air) from El Toro Road and 1.8 km WSW Moulton Survey Mk. 52 Comment
  RSA542552  Eleusine indica Fred M. Roberts 1987-8-31 3599 Orange Santa Ana River: adjacent to Santa Ana., UTM 3736150m N 415900m E 27 Comment
  RSA697744  Ellisia chrysanthemifolia R. H. McArthur 1934-4-7 s.n. Orange Ladd Canyon. Comment
  SEINET10561498  Elymus X hansenii Alvares ALVARES 1814 Orange Santrago P.K. Trail. Comment
  UCR209665  Elymus condensatus Fred M. Roberts 2008-5-8 6945 Orange South Coast, Dana Point Headlands, Center for Natural Lands Mgmt. Preserve near Strands Road Gate, 0.8 km west-northwest of the Marine Institute, Dana Point Harbor 65 Comment
  UCR73122  Elymus condensatus Scott D. White 1992-9-23 839 Orange Vicinity of Olinda, near city of Brea, immediately north of Carbon Canyon Road and east of Placentia Ave.; c. 1 mi. (airline) SSE of Tonner Canyon 183 Comment
  CAS-BOT-BC206789  Elymus glaucus subsp. glaucus John Thomas Howell 1927-6-17 2553 Orange Hills on north side of Santa Ana Canyon. 152 Comment
  RSA629046  Elymus glaucus subsp. glaucus Valerie L. Soza, LeRoy Gross 1999-6-10 526 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road. 1554 Comment
  UCR215297  Elymus glaucus var. glaucus Fred M. Roberts 2008-5-7 6940 Orange Lomas de Santiago, Limestone Ridge between Dripping Spring and Limestone Canyon, 3.5 km NW of Bolero Lookout and 1.7 km east of Bee Peak. Irvine Ranch Conservancy 481 Comment
  UCR2375  Elymus triticoides F. M. Reed 1932-5-24 7234 Orange South Coast, San Juan Capistrano, behind beach dune Comment
  UCR271003  Emex spinosa Mitch Provance, Travis Kegel 2016-4-8 416- 60 Orange Coastal Regions of Southern California, Newport Beach, W of the W end of 16th Street, and E of the Banning Oil Fields 32 Comment
  RSA539385  Emmenanthe penduliflora Fred M. Roberts, Carol A. Roberts 1988-6-10 4093 Orange Santa Ana Mtns: Main Divede Truck Trail, Modjeska Peak, 1.1 km SW summit. 465 Comment
  IRVC14677  Encelia californica A. S. Boughey 1968-7-16 423 Orange road to Signal Peak. San Joaquin Hills Comment
  RSA650815  Encelia californica Daniel Truong 1991-5-13 31 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  RSA732174  Encelia californica A. C. Sanders, Fred M. Roberts 2008-3-25 34544 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  SBBG60833  Encelia californica M. N. Ackley -Feb-1927 Orange Newport Beach Comment
  UC450971  Encelia californica Fay A. Macfadden 1931-3-1 2928 Orange Laguna Beach Comment
  UCR230243  Encelia californica Dick Newell, Don Millar 2011-3-15 082 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash 219 Comment
  UCR274182  Epilobium brachycarpum Dick Newell, Peter Wetzel 2016-6-7 428 Orange Peninsular Range; Santa Ana Mtns., Silverado Canyon, 0.1 mile NE of Blackstar Canyon Rd. intersection, near Silverado Creek 297 Comment
  CAS-BOT-BC166346  Epilobium canum subsp. canum Carl B. Wolf 1933-8-24 5384 Orange Santa Ana Mts. Along main divide motorway between Bedford Pk. & Santiago Pk. Comment
  CAS-BOT-BC166347  Epilobium canum subsp. canum Edgar A. Mearns 1894-6-25 4081 Orange San Clemente Island Comment
  POM18136  Epilobium canum subsp. canum P. A. Munz 1923-9-7 7764 Orange Santa Ana Mountains, on trail from Trabuco Canyon to Santiago Peak. 1616 Comment
  RSA511  Epilobium canum subsp. canum J. T. Howell 1927-7-26 480 Orange Claymine Canon near Sierra Peak. 244 Comment
  UC284876  Epilobium canum subsp. canum P. A. Munz 1923-9-7 7764 Orange slopes from Trabuco Canyon to Santiago Peak; Santa Ana Mts. 1615 Comment
  LA206111  Epilobium canum subsp. latifolium W. E. Pequegnat; August 1937 7 Orange Santa Ana Mountains, Santiago Peak, 8 mi. S of Corona Comment
  UCR193837  Epipactis gigantea A. C. Sanders, Fred M. Roberts 2008-7-16 35844 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin 391 Comment
  UCR174229  Equisetum arvense A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33038 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  RSA0031655  Equisetum funstonii Keith E. Hoffmaster 1937-4-11 749 Orange Black Star Can., Santa Ana Mts. Comment
  UC1543035  Equisetum laevigatum Donald G. Nelson 1935-4-6 263 Orange e San Juan Capistrano (canyon 200-300 ft below main Hwy., ca. 4 mi from Summit); San Juan Canyon Comment
  UCSB71602  Equisetum laevigatum Marsh, G.; Marsh, K. 1977-11-21 Orange Santa Ana Mtns: S side of Ortega Hwy, 1.2 mi E of San Juan Guard Station, road marker #107. Comment
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Aug 8 2013
  CAS-BOT-BC204633  Eragrostis mexicana subsp. virescens Ira L. Wiggins 1965-11-7 20358 Orange On west side of State College Blvd., near Troy High School, Fullerton Comment
  SBBG128578  Eragrostis mexicana subsp. virescens R. F. Thorne, E. Lathrop, W. Wisura 1977-7-8 49567 Orange San Juan Cyn at lower picnic camp, just below Ortega Hwy (74); Santa Ana Mtns Comment
  UCR236675  Eragrostis pilosa Fred M. Roberts, Sandra L. Leatherman 2008-9-17 7105 Orange Peninsular Ranges, Santa Ana River Canyon: Yorba Linda Regional Park adjacent to Santa Ana River, South of La Palma Ave. and 1.7 km ENE Imperial Hwy. bridge over river 87 Comment
  CAS-BOT-BC515000  Eriastrum sapphirinum subsp. dasyanthum H. F. Copeland 1938-6-28 s.n. Orange Hills back of Laguna Beach Comment
  CAS-BOT-BC299499  Ericameria palmeri var. pachylepis Carl B. Wolf 1931-10-30 2943 Orange Rancho Santa Ana, Santa Ana Canyon 207 Comment
  RSA0126613  Ericameria palmeri var. pachylepis Fred M. Roberts 2012-4-27 7537 Orange Lomas de Santiago: Loma Ridge, west of SR 241, tributary to Las Flores Cyn., near East Loma Ridge Road, 1.9 km SW Irvine Lake Park Campground & 1.2 km ESE Orange Co. Emergency Operations Center (Hill 1311). 350 Comment
  RSA38491  Ericameria parishii Percy C. Everett 1945-11-13 11512 Orange Indian Canyon Truck Trail, Indian Canyon, Santa Ana Mts. 960 Comment
  RSA708533  Ericameria parishii var. parishii Fred M. Roberts, Robert L. Allen, Chris Barnhill 2004-8-21 6106 Orange Caspers Wilderness Park, Hot Springs Cyn., Hot Springs Trail, c.a. 0.16km WSW San Juan Ranger Station, north of SR 74. 212 Comment
  JEPS19148  Ericameria pinifolia John Thomas Howell 1927-10-23 3172 Orange Rancho Santa Ana Santa Ana Canyon, Rancho Santa Ana 152 Comment
  POM49713  Erigeron foliosus var. stenophyllus L. R. Abrams 1901-6-16 1801 Orange Trabuco Canyon Comment
  POM6358  Erigeron foliosus var. stenophyllus P. A. Munz 1919-5-3 2656 Orange Santa Ana River Canyon. Comment
  RSA68305  Erigeron foliosus var. stenophyllus G. R. Campbell 1951-5-30 16097 Orange San Juan Canyon, Ortega Hwy, 4 mi. inside west border of Cleveland National Forest 152 Comment
  RSA298672  Eriodictyon crassifolium D. C. Michener 1982-5-24 4043 Orange 8.4 miles north of El Cariso, Orange County. Comment
  RSA5322  Eriodictyon crassifolium B. D. Stark 1932-12-30 4473 Orange Rancho Santa Ana. River bottom below Mexican houses. 122 Comment
  SD247658  Eriodictyon crassifolium R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49682 Orange Northern Santa Ana Mountains:Coal Canyon [NW of Sierra Peak]. 456 Comment
  UCR192086  Eriodictyon crassifolium var. crassifolium A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35298 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  UCSB56682  Eriogonum cinereum Roberts, Fred 1985-7-22 Orange Irvine: MacArthur Blvd., 0.2km N Bonita Canyon Rd.; 1.6km W UC Irvine campus 15 Comment
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Feb 22 2019
  POM2258  Eriogonum fasciculatum I. M. Johnston 1918-5-4 666 Orange Laguna Beach Comment
  UCR220033  Eriogonum fasciculatum Rebecca T. Vo 2010-6-5 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  UCR192100  Eriogonum fasciculatum subsp. foliolosum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35286 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  UCR250868  Eriogonum fasciculatum subsp. polifolium Dick Newell, Judy Booth 2014-4-27 365 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Maple Springs Road 0.8 mi. ENE of lower gate 632 Comment
  UC520304  Eriogonum fasciculatum var. fasciculatum Joseph Andorfer Ewan 1932-7-28 7705 Orange Corona del mar Comment
  UC527456  Eriogonum fasciculatum var. fasciculatum C. B. Wolf 1931-8-9 2300 Orange 1/2 mi s (1st small can.) Corona Del Mar beach (bottom of ravine near ocean) 7 Comment
  RSA393428  Eriogonum fasciculatum var. foliolosum N. C. Cooper 1944-6-4 1331 Orange San Juan Canyon. 305 Comment
  RSA5381  Eriogonum fasciculatum var. foliolosum B. D. Stark 1932-12-30 4458 Orange Rancho Santa Ana, 1/4 mile W of Roundtop. 457 Comment
  UCSB48025  Eriogonum fasciculatum var. foliolosum Roberts, Fred 1980-7-7 Orange Santa Ana Mtns; San Juan Canyon, Calif. Rte. 74, 2.2km ENE San Juan Guard Station; 0.6km W BM 1100 305 Comment
  RSA766138  Eriogonum gracile Joseph A. Ewan 1932-7-29 7738 Orange Road around Newport Lagoon. Comment
  RSA13461  Eriogonum parvifolium var. parvifolium S. G. Stokes 1932-8-29 21 Orange Doheny's Palisades near San Clemente Comment
  RSA236  Eriogonum thurberi J. T. Howell 1927-7-24 462 Orange Santa Ana River bottom near Rancho Santa Ana. 152 Comment
  SEINET7067535  Eriogonum thurberi A. G. Vestal 1947-6-12 s.n. Orange Santa Ana River Wash west of Orange. Coordinate datum: NAD27. UTM Zone 11, 418503mE, 3739068mN. Comment
  CAS-BOT-BC261799  Eriogonum wrightii var. subscaposum Carl B. Wolf 1933-8-24 5404 Orange Santa Ana Mts. Summit of Santiago Pk. 1731 Comment
  UC718404  Eriogonum wrightii var. subscaposum Carl B. Wolf 1933-8-24 5404 Orange Summit of Santiago Pk. Santa Ana Mts., Santiago Pk. 1731 Comment
  VVC62  Eriophyllum confertiflorum P. J. MacKay 1990-5-25 s.n. Orange Peninsular Range, Hwy 74 near San Juan Hot Springs 198 Comment
  IRVC26745  Eriophyllum confertiflorum Mark A. Elvin 2004-6-18 3521 Orange UCI Arboretum Southern Coastal 15 Comment
  UCR177409  Erodium botrys Scott D. White, Amanda Duchardt 2003-3-27 8846 Orange Peninsular Ranges/Santa Ana Mtns, Canyon bottom and W-facing slopes above Canada Gobernadora 183 Comment
  UCR191017  Erodium botrys A. C. Sanders, Fred M. Roberts 2008-4-22 35034 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  RSA562761  Erodium moschatum Steve Boyd, T. S. Ross 1992-5-19 7415 Orange Southern Santa Ana Mountains San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo (7S06) N into Aliso Canyon,. 366 Comment
  UCSB48066  Erodium moschatum Fritzke, Sue; Roberts, Fred 1982-4-2 Orange LAGUNA NIGUEL: hills; 3.5km ESE Aliso Peak; 3.2km ESE Alicia Fire Station; N of Del Avion 30 Comment
  CAS-BOT-BC41524  Erysimum capitatum Helen D. Geis 1902-1-1 528 Orange Santiago Creek. Comment
  RSA0069234  Eschscholzia californica Fred M. Roberts, Lee Ann Caranza 2009-4-7 7139 Orange Dana Point Headlands: Dana Point CNLM Preserve, 0.8 km WNW Dana Point Marine Institute at Dana Point Harbor. 65 Comment
  RSA734336  Eschscholzia californica A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34625 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 366 Comment
  SEINET7879573 Image available Eschscholzia californica Cathy Coulson 1959-1 s.n. Orange Anaheim, Orange County, California, N. E. corner of front yard, 2454 W. Broadway. Comment
  UCSB18078  Eschscholzia californica Shaw, Merrilee 1963-4-10 Orange Fernlead Drive, at intersection with Bayshore Drive, 1/2 mile S of U.S. Highway 101, Corona del Mar 24 Comment
  UCR50903  Eucalyptus amplifolia Dave Goodward 1987-4-16 7 Orange Irvine Ranch, Boy Scout Camp in Peters Canyon, east of Tustin and c. 1 mi NE of the Irvine Blvd/Myford Road intersection 122 Comment
  SD239814  Eucalyptus camaldulensis T. B. Salvato, Billy Deane 2006-10-16 1928 Orange South Coast: Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 Fwy (Tustin 7.5'Q) 10 Comment
  UCD103099  Eucalyptus camaldulensis Mildred E. Mathias 1953-4-7 2521 Orange El Toro Ranch. Comment
  CHSC26435  Eucalyptus tereticornis Richard Fellows 1970-5-7 10 Orange Ca. 15 mi. NE of Fullerton on Carbon Cyn. Rd. in Telegraph Cyn. 304 Comment
  UCR182895  Eucalyptus utilis Dean Kelch 2006-12-9 06 .538 Orange Along Newport Back Bay Dr. in side canyon 6 Comment
  RSA704833  Eucrypta chrysanthemifolia Unspecified s.n. Orange Modjeska s Home. Comment
  RSA751269  Eucrypta chrysanthemifolia A. C. Sanders, Fred M. Roberts 2008-7-16 35869 Orange Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon. 358 Comment
  UCR78042  Eucrypta chrysanthemifolia Scott D. White 1993-4-7 1198 Orange Laguna Mtns., Laguna Canyon, E side of Laguna Canyon Road (Hwy 133), above Hillies Lane. (Thomas Bros. Orange County Map: F-3 on 33A). Comment
  RSA787624  Euphorbia dictyosperma Keith E. Hoffmaster 1935-5-5 625 Orange San Juan Canyon., Santa Ana Mts. Comment
  RSA311745  Euphorbia misera G. L. Webster 1966-12-11 4779 Orange S- facing slopes at top of bluffs, Dana Point Comment
  RSA450847  Euphorbia misera Fred M. Roberts 1983-3-10 885 Orange Dana point Headlands; south of Scenic Dr. 0.3 km W Dana Point Harbor; 0.8km S Richard Henry Dana School. 60 Comment
  SD260945  Euphorbia misera R. E. Jr. Riefner 2012-12-5 12 587 Orange City of Dana Point, Dana Point Harbor, Dana Harbor Drive near Cove Road. 9 Comment
  UCR9253  Euphorbia misera D. H. Wilken, Tim LeBlanc 1966-1-7 622 Orange Dana Point, north of San Juan Capistrano 15 Comment
  RSA734349  Euphorbia polycarpa A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34642 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 396 Comment
  UCD142717  Euphorbia polycarpa C. L. Hitchcock 1966-3-15 24140 Orange Stearns Lease, 1.5 miles east of Brea. Comment
  UCR239867  Euphorbia serpens O. F. Clarke 2004-4-5 s.n. Orange South Coast, Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach 4 Comment
  RSA392120  Eustoma exaltatum Theodore Payne 1925-08 s.n. Orange 9 miles E of Florentia, Santa Ana river. Comment
  JEPS30706  Euthamia occidentalis Peter H. Raven 1961-10-15 16856 Orange just n of U.S. Highway 91 along dyke along road to Yorba Linda 114 Comment
  SBBG65406  Extriplex californica M. N. Ackley -May-1929 Orange Sunset Beach 8 Comment
  SD233799  Extriplex californica Hyrum B. Johnson 1973-10-27 Orange Pacific Coast: Bolsa Chica State Beach. Comment
  UCR100181  Festuca myuros Scott D. White 1993-3-5 1116 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  RSA716721  Ficus carica Fred M. Roberts, Michelle Balk, Robert Allen, Chris Barnhill 2004-6-19 6057 Orange Santa Ana Mtns: Holy Jim Cyn.: Holy Jim Trail, 3.5km SE summit of Santiago Peak. 610 Comment
  CAS-BOT-BC487555  Ficus microcarpa R. E. Riefner, Jr. 2014-8-8 14 -273 Orange City of Laguna Beach, E side of South Coast Hwy near Diamond Street 25 Comment
  CAS-BOT-BC502072  Ficus microcarpa R. E. Riefner, Jr. 2015-8-27 15 -360 Orange City of Newport Beach, Corona del Mar, long Marguerite Ave., S of Fourth Ave. 41 Comment
  RSA0088637  Ficus microcarpa R. E. Riefner Jr. 2015-8-27 15 -359 Orange City of Newport Beach, Corona del Mar, on Marguerite Ave. between Fifth Ave. and Fourth Ave. 41 Comment
  UC2046888  Ficus microcarpa R. E. Riefner Jr. 2015-8-27 15 -359 Orange City of Newport Beach, Corona del Mar, on Marguerite Ave. between Fifth Ave. and Fourth Ave. Comment
  RSA542432  Filago gallica Fred M. Roberts 1988-4-10 3909 Orange Lomas De Santiago: Loma Ridge, 1.0 kilometer N Bolero Lookout. 415 Comment
  RSA797822  Filago gallica R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49811 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA542431  Filago gallica Fred M. Roberts, Gordon Marsh, Karlin G. Marsh 1988-4-26 3938 Orange San Joaquin Hills: Pelican Hill, 0.5 kim SE Summit. 165 Comment
  CHSC35808  Foeniculum vulgare James Henrickson 1972-10-21 8053 Orange Eastern Anaheim, 2 blocks E. of Imperial Hwy. Along La Palma Ave., just N. of Santa Ana River. 60 Comment
  CAS-BOT-BC63071  Frangula californica subsp. californica P. C. Everett 1935-6-17 7137 Orange Santa Ana Mts., Coldwater Canyon, 1/2 mi. above Glen Ivy Resort. 457 Comment
  SD119374  Frangula californica subsp. californica Reid Moran 1975-11-21 22740 Orange in bottom of Trabuca Canyon, Santa Ana Mountains 399 Comment
  UCSB48032  Frangula californica subsp. californica Roberts, Fred 1980-7-7 Orange Santa Ana Mtns., San Juan Canyon, Hwy 74, 2.3km ENE San Juan Guard Station; 0.4km W Bench Mark 1100 315 Comment
  RSA798541  Frangula californica subsp. cuspidata Robert F. Thorne, E. W. Lathrop 1977-5-18 49740 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  UCD50249  Frangula purshiana Daniel I. Axelrod 1971-1-22 2 ax Orange By T on Trabuco on Santiago Peak topog. Inside CNF Boundary where road crosses 1 st Creek. Creek crosses to the south side of the canyon. Core in Trabuco Canyon. In Cleveland Nat'l Forest, Santa Ana Mountains, Orange County. Comment
  RSA30666  Frankenia grandifolia Louis C. Wheeler 1932-6-22 844 Orange Newport Bay. 1 Comment
  RSA391396  Frankenia grandifolia Albert J. Perkins 1908-5-30 s.n. Orange Laguna Mesa Comment
  RSA81007  Frankenia grandifolia var. campestris F. W. Peirson 1924-8-29 5072 Orange roadside 4 miles south of Santa Ana. Comment
  CAS-BOT-BC223804  Frankenia salina Joseph Andorfer Ewan 1932-7-28 7701 Orange Corona del Mar Comment
  JEPS30094  Frankenia salina L. M. Booth 1932-5-12 1037 Orange Newport Bay Comment
  UC1122123  Frankenia salina A. Lewis Apr 1934 390 Orange Celery Corona Quad. 0 Comment
  UCR261702  Frasera parryi Dick Newell, Judy Booth 2014-5-26 377 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, upper Long Canyon Rd., 1.3 mile NW of El Cariso Hotshot Camp 996 Comment
  CAS-BOT-BC217642  Fraxinus dipetala Carl B. Wolf 1934-9-21 6755 Orange 1/2 mi. below Silverado Truck Trail, Silverado Canyon, Santa Ana Mts. 640 Comment
  RSA113855  Fraxinus dipetala E. K. Balls 1956-3-26 21464 Orange 0.5 miles below Silverado Motorway, W slope of Santa Ana Mts. 640 Comment
  RSA5342  Fraxinus dipetala B. D. Stark, C. W. Tilforth 1933-1-4 4495 Orange Bottom of Claymine Canyon. No. end of Santa Ana Mts. 305 Comment
  CDA9402  Fraxinus uhdei D. G. Kelch 2006-12-9 6 .535 Orange Along Newport Back Bay Dr. in side canyon. Comment
  UCR139446  Fraxinus velutina var. coriacea E. R. Johnson 1936-4-27 7781 Orange Santa Ana River Canyon, Rancho Santa Ana Botanic Garden, Santa Ana River SW of Mexican Village 122 Comment
  RSA751318  Fritillaria biflora A. C. Sanders, Fred M. Roberts 2008-5-6 35270 Orange Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 366 Comment
  UCR192218  Fritillaria biflora A. C. Sanders, Fred M. Roberts 2008-5-6 35270 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 379 Comment
  RSA0036644  Fritillaria biflora Robt. Allen 2009-3-29 s.n. Orange Peninsular Ranges; Santa Ana Mountains regions: Near Santiago Canyon. Rancho Sonado (Orange County Department of Education). Entrance is along Santiago Canyon Road, 0.23 miles NW of turnoff to Williams Canyon, 1.55 air miles SE of turnoff to Silverado, Canyon. Wild Bill Trail. 364 Comment
  RSA759247  Funastrum cynanchoides var. hartwegii Robt. Allen, Alison Linden 2007-5-17 s.n. Orange Irvine, Turtle Rock community, Chaparral Park, due N of Turtle Rock Dr, due E of Highgate terrace. 136 Comment
  UCR192724  Galinsoga parviflora A. C. Sanders, Fred M. Roberts 2008-5-6 35226 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin 216 Comment
  RSA25774  Galinsoga parviflora var. parviflora C. B. Wolf 1941-6-3 10878 Orange Fullerton. Weed in garden of Ray M. Brown, Luanne Ave. 53 Comment
  UCSB48003  Galium angustifolium Roberts, Fred 1980-6-29 Orange Santa Ana Mtns., Viejo Canyon, 0.4km N Calif. Rte 74; 2.2km ENE San Juan Guard Station 341 Comment
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Oct 28 2018
  UCSB52456  Galium angustifolium Roberts, Fred 1983-3-10 Orange Dana Point Headlands; cliff above Dana Point Harbor, south of old Cove Rd; 0.8 km S Richard Henry Dana School 18 Comment
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Oct 28 2018
  JEPS56089  Galium angustifolium subsp. angustifolium Lauramay T. Dempster and G. L. Stebbins 1967-3-21 4352 Orange canyon on road to Modjeska's Home 1 mi nw Cook's Corner Comment
  POM367702  Galium angustifolium subsp. angustifolium M. B. Dunkle 1934-6-18 3965 Orange Upper San Juan Canyon. 610 Comment
  POM367703  Galium angustifolium subsp. angustifolium N. C. Cooper 1949-5-1 3950 Orange San Juan Canyon 610 Comment
  RSA789601  Galium angustifolium subsp. angustifolium Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49652 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] Comment
  SD52383  Galium angustifolium subsp. angustifolium Benjamin C. Stone 1953-5-1 328 Orange Coal Creek Canyon of the Santa Ana Mountains 1219 Comment
  POM186338  Galium angustifolium subsp. angustifolium Joseph A. Ewan 1932-7-29 7736 Orange Road around Newport Lagoon. Comment
  RSA0026260  Galium aparine Fred M. Roberts 2013-6-12 7790 Orange Peninsular Ranges: Santa Ana Mtns: Lower Silverado Canyon along Silverado Creek on north side of Silverado Canyon Road, 0.6 kilometers ENE Silverado School and 1.4 kilometers up stream Black Star Road Crossing. 320 Comment
  UCR149873  Galium porrigens Scott D. White, Michael Honer 2004-5-17 10390 Orange South Coast, City of Laguna Niguel. Ridges and open slopes directly N of the intersection of Crown Valley Parkway and Pacific Island Dr 183 Comment
  UC536927  Galium trifidum var. pacificum Lawrence M. Booth 1932-7-4 1244 Orange Newport Lagoon Comment
  CHSC39254  Garrya flavescens M. O. Dillon 1977-4-12 Orange Santa Ana Mts., Silverado Canyon. Comment
  RSA171101  Garrya flavescens var. pallida Robert F. Thorne 1963-7-26 32831 Orange Santa Ana Mts., Cleveland National Forest, Trabugo District. 1189 Comment
  UC1122732  Garrya veatchii A. Lewis May 1934 428 Orange Los Pinos Peak; Cleveland National Forest, Elsinore Quad. 1066 Comment
  RSA761932  Gastridium phleoides Suzanne Espino 2005-4-26 3 Orange Santa Ana Mountains, Caspers Wilderness Park, East Ridge Trial. Near water tank at E. 168 Comment
  RSA586252  Gastridium phleoides R. E. Riefner 1995-10-28 95 -383 Orange San Clemente State Beach Comment
  RSA586253  Gastridium phleoides R. E. Riefner 1994-9-6 95 -560 Orange San Clemente State Beach Comment
  RSA0045353  Gastridium ventricosum Keith E. Hoffmaster 1935-5-5 120 Orange San Juan Can., Santa Ana Mts. Comment
  CDA5172  Gaura drummondii Johnson 1939-8-1 1 Orange North Whittier Heights. 0 Comment
  RSA38480  Gaura parviflora E. L. Paddock 1943-6-8 12730 Orange Whittier Road 1/4 mile west of Puente Street, Brea. Comment
  CDA5232  Gaura sinuata E. Dudley Aug 1939 Orange 0 Comment
  POM18088  Gayophytum diffusum subsp. parviflorum P. A. Munz 1923-9-7 7749 Orange Santiago Peak, Santa Ana Mountains. 1646 Comment
  JEPS61411  Geranium carolinianum Alice King Apr 1908 Orange Santa Ana Mts. Comment
  RSA682592  Geranium carolinianum Scott D. White, Brian Leatherman 1997-5-6 5037 Orange Santa Ana Mts: Santiago Canyon area. Unnamed tributary to Santiago Ck. flowing from the SW, directly west of Pancho Cyn. Lomas de Santiago S 179. 366 Comment
  UCR177952  Geranium carolinianum Scott D. White, Brian Leatherman 1997-5-6 5037 Orange Peninsular Ranges; Santa Ana Mtns., Lomas de Santiago; Santiago Canyon area; unnamed tributary to Santiago Creek flowing from the SW, directly west of Pancho Canyon 396 Comment
  SBBG127247  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-30 12 -285 Orange Talbert Regional Park, general vicinity of Balboa Blvd and 19th St; Costa Mesa 5 Comment
  RSA791924  Geranium incanum var. multifidum R. E. Riefner Jr. 2007-4-28 7 -189 Orange City of Newport Beach, Newport Bay, North Star Beach, vicinity of Morning Star Ln. 2 Comment
  IRVC8757  Gilia angelensis Charles W. Sexton 1965-2-12 s.n. Orange Newport Beach. Southern Coastal Comment
  SEINET6065243  Gilia angelensis Unknown 1932-3-8 Orange West Base of Santa Ana Mountains; Santiago Dam. Comment
  UCR252202  Gilia capitata Amanda C. Swanson 2013-4-21 27 Orange Peninsular Range; Santa Ana Mtns., hiking trail across from Tucker Wildlife Sanctuary, less than 0.1 mi. from trailhead 434 Comment
  RSA749309  Gilia capitata subsp. abrotanifolia Fred M. Roberts 1999-4-22 5195 Orange Lomas de Santiago: ridges between Limestone Cyn. and Santiago Creek wash opposite mouth Williams Cyn., 2.0 km SE Silverado Sch. and 2.2 km NNW Bolero Lookout. 400 Comment
  RSA469704  Gilia tricolor subsp. diffusa M. B. Dunkle 1935-2-10 4330 Orange El Toro 61 Comment
  RSA0036807  Gnaphalium californicum Darren Day, Hal Willis 1984-4-28 002 Orange At the side of Laguna Canyon Rd. exactly 2.5 miles outside of the city limits, heading north. Comment
  UCR195022  Gnaphalium canescens subsp. microcephalum A. C. Sanders, Fred M. Roberts 2008-8-7 35971 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  UCR217284  Gnaphalium canescens subsp. microcephalum Mark A. Elvin, Laura Soloro, Adam Sriro 2003-1-10 2217 Orange Peninsular Range; Santa Ana Mtns., c. 1.6 mi. west of Sierra Peak along road to powerlines, near Claymont Clay Mine 457 Comment
  POM201844  Gnaphalium chilense L. M. Booth 1932-7-19 1275 Orange Bolsas Marsh. Comment
  RSA856  Gnaphalium chilense J. T. Howell 1927-7-21 453 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  RSA704430  Gnaphalium leucocephalum Fred M. Roberts, David E. Bramlet 2004-7-30 6087 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn. along Cristianitos Ck., 1.1 km SSW Gato Gate and 0.32km W Cristianitos Road. 73 Comment
  UCR162881  Gnaphalium leucocephalum Fred M. Roberts 2004-7-30 6088 Orange Rancho Mission Viejo; Donna O'Neill Land Conservancy, Cristianitos Canyon along Cristianitos Creek, 0.93 km SSW Gato Gate and 0.23 km W Cristianitos Road 76 Comment
  IRVC9358  Gnaphalium luteo-album B. Gittins 1963-3-19 57 Orange 635 Joan. Costa Mesa Comment
  POM49167  Gnaphalium palustre I. M. Johnston 1924-7-10 s.n. Orange Laguna Canyon. Comment
  RSA542433  Gnaphalium palustre Bill O'Connell 1991-5-31 3 Orange San Joaquin Hills: Pelican Hill, west side 190 Comment
  UCR194554  Gnaphalium stramineum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35325 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 0.3 mi. west of Eastern Transportation Corridor (Hwy 241) and 1.45 mi. east of south end of Walnut Canyon Reservoir 335 Comment
  RSA698230  Godetia bottae Minor Warne 1934-5-19 s.n. Orange Trabuco. Comment
  RSA698234  Godetia epilobioides R. H. McArthur 1934-4-14 s.n. Orange Laguna Canyon. Hillside. Comment
  IRVC26733  Grindelia Mark A. Elvin 2004-6-18 3522 Orange UCI Arboretum Southern Coastal 15 Comment
  SD60356  Grindelia camporum Peter H. Raven 1959-4-30 14038 Orange Base of ocean bluffs just north of San Clemente. Comment
  UCR193363  Grindelia camporum A. C. Sanders 2008-5-28 35430 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  CAS-BOT-BC123701  Grindelia camporum var. bracteosa John Thomas Howell 1927-7-16 2786 Orange hills on N side of Santa Ana Canyon 182 Comment
  IRVC4033  Grindelia camporum var. bracteosa A. S. Boughey 1968-7-16 422 Orange road to Signal Peak. San Joaquin Hills Comment
  IRVC745  Grindelia camporum var. bracteosa M. Savage 1965-4-2 Orange Corona del Mar, across from Irvine Terrace. Newport Beach Comment
  CAS-BOT-BC305202  Grindelia hirsutula Peter H. Raven 1959-4-30 14038 Orange Just north of San Clemente Comment
  HSC79615  Grindelia hirsutula James Henrickson 1972-10-21 8070 Orange Newport Beach, S of Jamboree Rd., E of Irvine Coast Country Club near U. C. Irvine 46 Comment
  CDA6156  Guizotia abyssinica Robert L. Pope 1967-6-13 Orange 0 Comment
  IRVC8688  Gutierrezia californica Charles W. Sexton 1965-3-27 Orange Ortega Highway out of San Juan Capistrano Southern Coastal Comment
  RSA868  Gutierrezia californica J. T. Howell 1927-11-6 802 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  UCR151117  Gutierrezia californica Scott D. White 1998-10-15 7188 Orange Santa Ana Mtns foothills, Yorba Linda, c. 0.5 mi south of Telegraph Canyon between Ohio St. and Fairmont 305 Comment
  LA203632  Gutierrezia sarothrae John Thomas Howell; 1927-7-22 2816 Orange Santa Ana Canyon Comment
  UCR210065  Haplopappus menziesii A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37196 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, west of Limestone Canyon Rd. 366 Comment
  UCR197795  Haplopappus squarrosus A. C. Sanders, Fred M. Roberts 2008-9-18 36098 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon at the highway bridge above Irvine Lake 300 Comment
  RSA554631  Haplopappus venetus Scott D. White 1992-9-29 897 Orange Vinicity of Brea, immediately N of Carbon Canyon Rd & E of Placentia Ave., +/- 1 mi. (airline) S/SE of Tonner Canyon. 183 Comment
  UCR241069  Harpagonella palmeri Dick Newell, Don Millar, Gigi Logan 2013-3-19 321 Orange Peninsular Range; Santa Ana Mtns., Silverado-Mod. Trail, 1.27 miles north of Blackstar and Silverado Canyon Rd. 366 Comment
  RSA0066585  Harpagonella palmeri Fred M. Roberts 1993-4-23 4855 Orange Mission Viejo: Mesa just W of Bridgeton Road near jct. of Ridgemark above Arroyo Trabuco, 4.8 km NNE Trabuco Survey Marker. 152 Comment
  RSA0066593  Harpagonella palmeri D. E. Bramlet 2000-4-21 2988 Orange Exposed terraces west of Blind Cyn. and North of Irvine Park. The site is 1.5 km west of Blind Canyon and 76 m north of Irvine Park. This locality is 122 m southwest of the MWD access road. 207 Comment
  NY387959  Hasseanthus elongatus L. Abrams 06 1901 1785 Orange San Joaquin Hills. Comment
  RSA269264  Hedyotis corymbosa G. D. Barbe 1973-8-9 1695 Orange Bordier's Nursery, 7231 Irvine Blvd., Santa Ana (Tustin). Comment
  RSA585059  Hedypnois cretica D. Atwood 1993-3-28 17716 Orange Bolsa Chica Ecological Reserve, California Dept. of Fish and Game. Sea level. 0 Comment
  RSA602118  Hedypnois cretica Scott D. White 1997-5-6 5045 Orange Santa Ana Mountains. Santiago Canyon area: Ridgetop road N and W of Bolero Lookout. 427 Comment
  RSA732000  Hedypnois cretica A. C. Sanders, Fred M. Roberts 2008-4-22 35059 Orange Penisular Range; Lomas de Santiago, Loma Ridge c. 1/4 mi. SE of VABM Bee, above Bee Canyon landfill on road from Hicks Canyon Haul Rd. to Limestone Canyon. c. 3.5 mi. WSW of Silverado. 493 Comment
  UCR150613  Hedypnois cretica Scott D. White 1997-5-6 5045 Orange Peninsular Ranges; Santa Ana Mountains, Lomas de Santiago. Santiago Canyon area: Ridgetop road N and west of Bolero Lookout 488 Comment
  CAS-BOT-BC309484  Helenium puberulum B. Pitzer; T. Tennant 1997-11-8 3363 Orange Crystal Cove State Park, along Moro Canyon Trail, from beginning to a point ca. 1.75 mi. up the canyon 85 Comment
  JEPS35482  Helianthus annuus W. L. Jepson 1940-10-6 20180 Orange Horseshow Bend Santa Ana Canyon Comment
  RSA725463  Helianthus annuus Fred M. Roberts 2007-8-6 6554 Orange San Joaquin Hills: Laguna Beach, Laguna Cyn. on east side of Laguna Cyn. Rd. adj. to dog park, 1.2 km S (air) from El Toro Road and 1.8 km WSW Moulton Survey Mk. 52 Comment
  RSA734760  Helianthus annuus A. C. Sanders, Fred M. Roberts 2008-5-6 35217 Orange Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  UCR228887  Helianthus annuus Dick Newell, Peter Wetzel, Cassie Backer 2011-7-5 201 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash 242 Comment
  IRVC775  Helianthus annuus I. L. Wiggins 1966-5-18 20662 Orange along Associated Rd. between Yorba Linda Blvd. and Imperial Hwy; roadside fill. Fullerton Comment
  POM359985  Helianthus annuus subsp. lenticularis Josephine Derigo 1941-7-25 s.n. Orange Canyon road to Laguna Beach, California. open feilds and road side. Low lands Comment
  RSA873  Helianthus annuus subsp. lenticularis J. T. Howell 1927-7-27 484 Orange Near ranch, Rancho Santa Ana 152 Comment
  UC774875  Helianthus ciliaris E. L. Paddock 1941-8-1 Orange 2 mi e Brea; Graham-Loftus property Comment
  SEINET13387984 Image available Helianthus ciliaris T. C. Fuller 1962-6-7 8874 Orange Abundant on hillside in grain, Veeh Ranch, N. of El Toro, CA. 11 mi. SE of Tustin Comment
  IRVC14734  Helianthus gracilentus A. S. Boughey 1968-7-9 401 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  RSA725574  Helianthus gracilentus Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6531 Orange dirt road along ridge between Black Star and Fremont Canyons, 4.4km ENE Irvine Lake spillway and 2.4km WSW Hidden Ranch. 662 Comment
  UCR230222  Helianthus gracilentus Dick Newell, Ed Hill 2011-3-29 099 Orange Peninsular Range; Santa Ana Mtns., 200 yards NE of old coal mine, under power lines, off Coal Rd. below intersection with Upper Blind Cyn. Rd. 482 Comment
  RSA784269  Helianthus gracilentus J. D. Olmsted 1959-8-26 838 Orange Along road from mouth of Black Star Canyon by Rock Crushing Plant.; Mt. range: Santa Ana Mts (N end); drainage area: to Santiago Res[ervoir]. 305 Comment
  UC537260  Helianthus nuttallii subsp. parishii L. M. Booth 1933-8-26 1388 Orange Newport Lagoon Comment
  RSA749044  Heliotropium curassavicum A. C. Sanders, Fred M. Roberts 2008-8-7 35983 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 185 Comment
  UCR195005  Heliotropium curassavicum A. C. Sanders, Fred M. Roberts 2008-8-7 35983 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  UCR248972  Heliotropium curassavicum Jeremiah George, Audrey J. George 2013-11-21 s.n. Orange Los Alamitos, adjacent to Los Alamitos Racetrack, north end of Katella Ave. at junction with Enterprise Dr. 9 Comment
  RSA184178  Heliotropium curassavicum var. oculatum I. L. Wiggins 1965-11-6 20349 Orange Near well #14, Kramer Oil Estates, near end of county road to Rancho Santa Ana. Comment
  UCD119421  Heliotropium curassavicum var. oculatum E. Frost 1996-5-11 16 Orange Newport Back Bay, 25 yards in along bike path. 7 Comment
  CAS-BOT-BC305898  Helminthotheca echioides Ira L. Wiggins 1965-10-18 20278 Orange At NE corner of Chapman Ave. and Victor Dr., Fullerton Comment
  RSA5867  Hemizonia australis C. B. Wolf 1932-9-13 4019 Orange Bryant Ranch. 3/10 miles W of Los Alamitos Blvd.700 ft. south of Bryant Ave. (800 ft. east & 700 ft. south of NW corner of SW 1/4 sec. 30 T4S R11W) 7 Comment
  RSA596143  Hemizonia australis C. S. Jones 1996-9-16 13 Orange Seal Beach, Hellman Ranch Site, located west of Seal Beach Boulevard, S of Los Alamitos Retarding Basin, E of Haines Cooling Channel, and N of Gum Grove Park. Comment
  CLARK-A1528-238  Hemizonia fasciculata Cesareo Perez 1971-5-18 19 Orange Villa Park Comment
  POM360277  Hemizonia fasciculata L. C. Wheeler 1932-6-25 861 Orange Newport Bay. 6 Comment
  POM5000  Hemizonia fasciculata H. M. Hall 1906-6-19 7411 Orange Gypsum, Santa Ana Canyon 122 Comment
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Sep 4 2011
  UCR149499  Hemizonia fasciculata Scott D. White, Michael Honer 2004-5-17 10386 Orange South Coast, City of Laguna Niguel. Ridges and open slopes directly N of the intersection of Crown Valley Parkway and Pacific Island Dr 183 Comment
  UCR193760  Hemizonia fasciculata A. C. Sanders, Fred M. Roberts 2008-7-3 35705 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  RSA0038312  Hemizonia fasciculata Louis C. Wheeler 1932-6-25 861 Orange Bluff on north side Newport Bay. 6 Comment
  RSA485309  Hemizonia fasciculata Chris Lauterbach 1971-5-9 32 Orange Carbon Canyon road, the intersection of CAlifornia 90 and 142. 76 Comment
  RSA704074  Hemizonia paniculata D. E. Bramlet, Fred Roberts 2003-5-8 3432 Orange Donna O'Neill Reserve. SE area of the reserve 305m west to Cristianitos Rd. and 762m south of the E-W access road. 101 Comment
  UCR158024  Hemizonia parryi subsp. australis Adrian Wolf 1998-7-21 365 Orange South Coast, Sand Canyon, William R. Mason Regional Park, west of University Dr.--Yale intersection, between Culver and Ridgeline 34 Comment
  UCR177696  Hemizonia parryi subsp. australis Fred M. Roberts 2003-7-8 5955 Orange Coastal Plains & Basins; Los Angeles Basin region, Orange: Orange Park Acres, along Santiago Creek, 0.5km E Cannon Road and 0.3km N Santiago Canyon Rd. 117 Comment
  UCR231160  Hemizonia parryi subsp. australis Dick Newell, Don Millar 2011-6-22 191 Orange South Coast, Newport Beach, Delhi Channel near University Drive 5 Comment
  UCR248971  Hemizonia parryi subsp. australis Jeremiah George, Audrey J. George 2013-11-21 s.n. Orange Los Alamitos, adjacent to Los Alamitos Racetrack, north end of Katella Ave. at junction with Enterprise Dr. 9 Comment
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May 15 2019
  RSA0001299  Hemizonia parryi subsp. australis D. D. Keck 1933-9-29 2537 Orange Seal beach. Comment
  CAS-BOT-BC143751  Heteromeles arbutifolia Carl B. Wolf 1932-12-19 4430 -A Orange 1/2 mi. from Skyline Drive on firebreak road to Sierra Peak, Santa Ana Mts. 914 Comment
  CAS-BOT-BC143754  Heteromeles arbutifolia Dr. Barton W. Evermann 1918-3-25 s.n. Orange San Clemente Comment
  RSA0072403  Heteromeles arbutifolia Steve D. Boyd, Bart O'Brien 1998-1-13 10071 Orange Santa Ana Mountains: north end of the range, W of Sierra Peak along Main Divide Road (3S04), ca. 0.5 mi from summit of peak near head of Coal canyon. 774 Comment
  UCR223957  Heteromeles arbutifolia Fred M. Roberts 2008-4-9 6884 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8 km west northwest of Marine Institute, Dana Point Harbor 65 Comment
  RSA0072399  Heteromeles arbutifolia Carl B. Wolf, B. D. Stark 1932-12-19 4430 -A Orange Santa Ana Mts: 1/2 mile from Skyline Drive on firebreak road to Sierra Peak. 762 Comment
  CAS-BOT-BC318906  Heterotheca grandiflora Ira L. Wiggins 1965-10-24 20284 Orange Roadside along Skyline Drive near intersection with Raymond Street, Fullerton Comment
  IRVC791  Heterotheca grandiflora C. Thompson 1965-2-28 Orange Corona Del Mar: Corona Highlands Southern Coastal Comment
  JEPS20382  Heterotheca grandiflora L. M. Booth 1932-5-25 1112 Orange Balboa Island Newport Bay, Balboa Island Comment
  SD144039  Heterotheca grandiflora Scott D. White 1996-12-20 4639 Orange Santa Ana Mts., above Modjeska Canyon 424 Comment
  CAS-BOT-BC318903  Heterotheca grandiflora J. Ewan 1931-10-3 s.n. Orange 1/2 mile above La Vida Soda Springs, Carbon Canyon Comment
  CAS-BOT-BC318907  Heterotheca grandiflora Ira L. Wiggins 1966-3-16 20523 Orange Near Orange County refuse dispoasl area Comment
  RSA0075815  Heterotheca grandiflora Mary F. Spencer 1922-5-31 77 Orange Fullerton, Orange County Comment
  UC537029  Heterotheca sessiliflora subsp. echioides Lawrence M. Booth 1932-7-29 1330 Orange Newport Lagoon Comment
  RSA721136  Hieracium albiflorum Anonymous s.n. Orange Santa Ana Comment
  RSA751403  Hieracium argutum R. E. Riefner Jr. 2008-6-3 08 -136 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 641 Comment
  CAS-BOT-BC55400  Hirschfeldia incana Ira L. Wiggins 1966-2-19 20456 Orange Carbon Canyon near Orange County Survey bench mark RCE 7872. Comment
  CAS-BOT-BC55403  Hirschfeldia incana John Thomas Howell 1927-7-5 2649 Orange Santa Ana River bottom, Santa Ana Canyon. 152 Comment
  RSA732170  Hirschfeldia incana A. C. Sanders, Fred M. Roberts 2008-3-25 34540 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCSB48229  Hirschfeldia incana Roberts, Fred 1981-7-8 Orange Rancho Mission Viejo: Calif. Rte. 74, 5.2 km ENE San Juan Capistrano by road 100 Comment
  POM357588  Holodiscus discolor W. Pequegnat 1940-6-19 s.n. Orange North face of Los Pinos Peak 1159 Comment
  CAS-BOT-BC150004  Holodiscus discolor var. discolor B. D. Stark 1931-6-20 2248 Orange East fork of Claymine Canyon, north end of Santa Ana Mountains 304 Comment
  RSA542403  Holodiscus discolor var. franciscanus Karlin G. Marsh, Gordon Marsh 1989-6-25 s.n. Orange Central Santiago Canyon, old mine trail below Santiago Truck Trail, 2.5 km SSW Laurel Springs 719 Comment
  RSA701429  Hordeum depressum Rankin s.n. Orange Laguna Beach Comment
  UCR158160  Hordeum intercedens Adrian Wolf 1998-4-24 161 Orange South Coast, San Joaquin Hills, Shady Canyon, central part west of main canyon on ridgetop, 2.5 km NE of Signal Peak, 3 km south of Sand Canyon Reservoir 152 Comment
  UCR168466  Hordeum intercedens D. E. Bramlet, Fred M. Roberts 2003-5-8 3433 Orange Donna O'Neill Reserve, S-mid east area of reserve, 91 m west of Cristianitos Rd. and 152 m south of the east - west road, San Clemente 119 Comment
  RSA666095  Hordeum marinum subsp. gussoneanum Fred M. Roberts, Michelle Lee 2001-5-14 5459 Orange Rancho Mission Viejo: South of San Juan Creek, 0.6km WNW Median Rancho Survey Marker. PCR Vernal Pool 2., (Canada Gobernadora: 33 deg 30'36''N, 117 deg 35'55''W) 238 Comment
  RSA735167  Hordeum murinum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35278 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  UCR154289  Hordeum murinum Mark A. Elvin 2004-5-2 3405 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  IRVC23057  Horkelia cuneata subsp. puberula Fred M. Roberts, M. L. Polek 1985-6-18 1953 Orange Santa Ana Mtns: Chiquito Basin, San Juan Trail, 1.8km SW Blue Jay Campground, 2.7km SSE Los Pinos Pk. Peninsular Ranges 866 Comment
  UC582823  Horkelia cuneata subsp. puberula Philip A. Munz 1936-4-20 14606 Orange Laguna Beach Mt. Olympus 152 Comment
  HSC78999  Horkelia cuneata var. puberula Steve Boyd 1981-5-13 Orange Pelican Hill, Irvine Ranch property in the San Joaquin Hills S of Corona del Mar Comment
  CAS-BOT-BC55487  Hornungia procumbens Helen D. Geis 1902-3-21 s.n. Orange Balsa Chica. Comment
  JEPS17473  Hydrocotyle umbellata F. W. Peirson 1924-10-19 5237 Orange Wintersberg Comment
  RSA0106894  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10 -56 Orange City of San Juan Capistrano, La Novia Ave. at Valle Rd. 45 Comment
  RSA769302  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10 -52 Orange City of San Juan Capistrano, along McKraken View Trail at San Juan Creek Rd., E of I-5 Freeway. 51 Comment
  UCR240191  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10- 56 Orange city of San Juan Capistrano, La Novia Ave. at Valle Road 45 Comment
  RSA749428  Hypochaeris glabra Fred M. Roberts 2008-4-14 6892 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork, 3.4 km E Robbers Peak, Irvine Ranch Conservancy. 433 Comment
  RSA789230  Hypochaeris glabra Naomi Fraga, Duncan S. Bell 2009-5-11 2711 Orange San Juan loop trail, Cleveland National Forest just west of Sugarloaf Spur Trail. 912 Comment
  SEINET7249215  Ipomoea cairica R. E. Riefner Jr. 2012-1 12 -563 Orange City of Laguna Beach, South Crescent Beach, Circle Way near Cliff Drive. 3 Comment
  UCR240185  Ipomoea cairica R. E. Riefner Jr. 2012-11-27 12- 563 Orange South Coast, city of laguna Beach, South Crescent Beach, Circle Way near Cliff Drive 3 Comment
  SBBG128744  Ipomoea cairica R. E. Riefner Jr. 2012-11-27 12 -563 Orange City of Laguna Beach, S Crescent Beach, Circle Way near Cliff Drive 3 Comment
  UCR246472  Ipomoea purpurea R. E. Riefner Jr. 2012-9-7 12-504 Orange South Coast, city of Dana Point, Dana Point Harbor Drive, vicinity of Island Way 19 Comment
  RSA768504  Isocoma menziesii Justin M. Wood 2009-12-1 1390 Orange Santa Ana River: marsh just upstream of Pacific Coast Highway. 0 Comment
  RSA167492  Isocoma menziesii var. menziesii R. F. Thorne, Percy C. Everett 1963-9-25 33211 Orange On disturbed bluff top, Dana Point. Comment
  OBI47601  Isocoma menziesii var. vernonioides B. Pitzer & L. F. LaPre, L. F. LaPre 1986-10-20 s.n. Orange Summit of Hicks cyn on a private road (continuation of Jeffrey rd) ca. 2.4 mi above the gun club. (Near 117d 43'W, 33d 44'N 274 Comment
  POM201745  Isocoma menziesii var. vernonioides L. M. Booth 1932-6-29 1225 Orange Newport Bay Comment
  RSA573427  Isocoma menziesii var. vernonioides Steve Boyd, Tim Ross 1994-9-14 8348 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon trail at stream crossing in Aliso Canyon. 341 Comment
  RSA743518  Isocoma menziesii var. vernonioides Fred M. Roberts, Carol A. Roberts 2008-9-28 7114 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5 km W Marine Institute (Dana Point Harbor). 75 Comment
  UC1090402  Isomeris arborea Milo S. Baker 1958-5-20 13307 Orange Newport Bay Comment
  UC729954  Iva axillaris subsp. robustior Carl B. Wolf 1932-6-28 3804 Orange edge of field Bixby Ave; Bryant Ranch 228 Comment
  RSA0042765  Iva hayesiana Fred M. Roberts 2012-7-18 7670 Orange SAN JOAQUIN HILLS: Newport Beach, Buck Gully, Buck Gully Trail, west end, just east of north terminus of Poppy Street and 2.1 km WNW summit of Pelican Hill. 37 Comment
  UCR220031  Iva hayesiana Rebecca T. Vo 2010-6-5 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  UCR239843  Iva hayesiana O. F. Clarke 2004-4-5 s.n. Orange South Coast, Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach 4 Comment
  SEINET11446674 Image available Jaumea carnosa L. C. Wheeler 1932-6-22 846 Orange Newport Bay 0 Comment
  UC537018  Jaumea carnosa Lawrence M. Booth 1932-6-9 1183 Orange Newport Bay Comment
  UCR240104  Jaumea carnosa Dick Newell, Judy Booth 2012-9-26 292 Orange South Coast, Newport Beach, Back Bay Drive at the Salt Dike 3 Comment
  POM122693  Jepsonia parryi Marcus E. Jones 1926-3-13 s.n. Orange Santa Ana Canyon. Comment
  RSA0011057  Juglans californica J. R. Bruff 1936-11 s.n. Orange Durant St. Santa Ana. Comment
  RSA0011063  Juglans californica M. B. Dunkle 1933-5-30 3569 -A Orange Carbon Canyon Comment
  RSA542477  Juglans californica var. californica Fred M. Roberts, Karlin Marsh 1988-4-25 3929 Orange San Joaquin Hills: Irvine Coast, 1.1 km SW Pelican Hill. 44 Comment
  UCR216055  Juglans hindsii R. E. Riefner Jr. 2009-8-12 09- 168 Orange Peninsular Range; Foothills of Santa Ana Mtns., near Silverado, Cook's Corner area, Santiago Canyon Road at Lawrence Canyon Rd. 335 Comment
  RSA0080065  Juglans hindsii R. E. Riefner Jr. 2011-9-10 11 -124 Orange Santa Ana Canyon, I-91 northbound, S side of freeway, located within 100 ft of the Riverside County line. 127 Comment
  RSA782381  Juglans hindsii R. E. Riefner Jr. 2009-8-12 9 -168 Orange Foothills of Santa Ana Mts, near Silverado, Cook s Corner area. Santiago Canyon Road at Lawrence Canyon Road. 335 Comment
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Dec 14 2012
  SD248445  Juglans regia R. E. Riefner Jr. 2011-8-25 11 115 Orange Trabuco Canyon, Trabuco Canyon Road, ca. 1 mile NW of O'Neill Regional Park. 319 Comment
  RSA795706  Juncus W. R. Ferren 1991-12-4 EPA- 18 Orange Cook Creek, tributary to Aliso Creek, San Juan Capistrano. Comment
  POM47588  Juncus acutus subsp. leopoldii I. M. Johnston 1924-8-29 s.n. Orange 4 miles north of Balboa Comment
  RSA192266  Juncus bufonius E. W. Lathrop 1966-4-10 6157 Orange Silverado Canyon, Santa Ana Mountains, Cleveland Nat l. Forest, Trabuco District. 366 Comment
  RSA799620  Juncus bufonius Justin M. Wood 2011-4-12 3654 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  UCSB47985  Juncus macrophyllus Roberts, Fred 1980-6-25 Orange Santa Ana Mtns; San Juan Canyon below Calif. Rte. 74; 2.4 km ENE San Juan Guard Station; 0.3 km WSW BM 1100 290 Comment
  RSA683076  Juncus phaeocephalus Scott D. White, Amanda Duchardt 2003-5-1 9151 Orange Canada Gobernadora. 122 Comment
  POM1601  Juncus rugulosus C. B. Bradshaw 1902-7-19 s.n. Orange Santiago Canyon. Comment
  RSA699733  Juncus rugulosus Keith E. Hoffmaster 1934-7-15 s.n. Orange Santa Ana Mts (Modjeska) Comment
  UCR217668  Juncus textilis Fred M. Roberts, R. E. Riefner Jr. 2008-5-30 7023 Orange South Coast, Lomas de Santiago, Loma Ridge, Hanging Man's Tree Canyon, along Hanging Man's Tree Canyon Road, c. 0.4 km west of Santiago Canyon Road and 1.23 km north of Bolero Lookout 372 Comment
  RSA748271  Juncus xiphioides A. C. Sanders, Fred M. Roberts 2008-6-17 35510 Orange Middle section of Weir Canyon, SSE of Walnut Canyon Reservoir. 225 Comment
  UCR174211  Juncus xiphioides A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33046 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  RSA293253  Keckiella antirrhinoides D. C. Michener 1980-6-5 3668 Orange San Juan River valley. 300 Comment
  RSA552937  Keckiella antirrhinoides Fred M. Roberts Jr. 1989-5-9 4339 Orange Santa Ana Mts: Gypsum Canyon, west fork, 5.6 km WNW Sierra Peak, c.a. 1 km S Highway 91. 146 Comment
  UC1063326  Keckiella antirrhinoides A. Lewis Mar 1934 340 Orange Santa Ana Canyon; Corona Quad. 152 Comment
  NY786524  Keckiella antirrhinoides var. antirrhinoides D. C. Michener 1980-6-5 3668 Orange Santa Ana Mountains. San Juan river valley, on terrace near abandoned mine(s). Comment
  LA209269  Keckiella cordifolia W. E. Pequegnat; August 1937 16 Orange Santa Ana Mountains, Santiago Peak 1523 Comment
  RSA562763  Keckiella cordifolia Steve D. Boyd, Tim S. Ross 1992-5-19 7416 Orange Southern Santa Ana Mountains San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo (7S06) N into Aliso Canyon. 366 Comment
  RSA649976  Keckiella cordifolia Gat Shlomo 1959-5-12 33 Orange Carbon [Canyon] Comment
  RSA659638  Keckiella cordifolia T. A. Daubert 1991-5-26 676 Orange Tucker Wildlife Sanctuary, Modjeska Canyon, turn around island Comment
  UC1011911  Keckiella cordifolia F. W. Pennell and E. M. Harvey 1949-6-29 26806 Orange above San Juan Capistrano (Ortega Highway) 365 Comment
  LA209316  Keckiella ternata W. E. Pequegnat; August 1937 18 a Orange Santa Ana Mountains, Santiago Peak 1523 Comment
  UCR227628  Keckiella ternata subsp. ternata Robt. L. Allen 2003-6-22 12296 Orange Peninsular Range; Santa Ana Mountains, northeastern flank of Santiago Peak, along North Main Divide Road 1505 Comment
  JEPS1808  Kickxia elatine Frank W. Peirson 1927-9-25 7676 Orange flats below Wintersberg Comment
  CDA35534  Koelreuteria bipinnata D. G. Kelch, Mark Elvin 2006-12-9 6 .556 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  SD235021  Koelreuteria bipinnata R. E. Jr. Riefner 2006-11-14 06 673 Orange South Coast: Irvine, along San Diego Creek at Campus Ave. 3 Comment
  CDA15831  Kyllinga brevifolia B. Butcher 1999-11-17 PDR 1237873 Orange Southern California; Santa Ana. 0 Comment
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Oct 27 2010
  CAS-BOT-BC354308  Lagunaria patersonia R. E. Riefner, Jr. 2009-12-3 09 -247 Orange City of San Clemente, N of San Clemente Pier, along main beach trail vicinity of Buena Vista St at West Canada St. 7 Comment
  UCR246471  Lagunaria patersonia R. E. Riefner Jr. 2004-12-23 04- 557 Orange South Coast, city of San Clemente, vicinity of San Clemente Pier at Ave. Del Mar 3 Comment
  CAS-BOT-BC272426  Lamarckia aurea Ira L. Wiggins 1966-3-5 20516 Orange In fallow field about 1/2 mi. W. of El Toro Post Office, along Highway S-18 Comment
  UC1132162  Lamarckia aurea A. Lewis Apr 1934 377 Orange Coal Mine 304 Comment
  RSA651779  Lamarckia aurea Bill Amling 1948-5-2 5 Orange 10681 Flower St. Stanton. 242 Comment
  RSA663163  Lamium amplexicaule R. E. Riefner Jr. 2000-6-26 20 -584 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Canyon Road. 305 Comment
  RSA708014  Lantana camara Scott D. White, Jennifer H. Jones 2005-3-31 10854 Orange South Coast: City of Laguna Beach. 549 Nyes Place. Proposed home site on ca. 0.5 acre. 91 Comment
  IRVC20365  Lasthenia californica Fred M. Roberts, D. A. Roberts 1983-3-22 933 Orange San Juan Canyon, above Hwy 74, 2.7km ENE San Juan Guard Sta.; 3.6km SSW Sugar Loaf Pk., Santa Ana Mountains 407 Comment
  RSA0013588  Lasthenia coronaria D. E. Bramlet 2008-4-15 4179 Orange Ridgeline 374m N of Hicks Cyn. Haul Rd. & 335m E of the Asphalt Plant 195 Comment
  RSA796  Lasthenia coronaria J. T. Howell 1928-2-25 850 Orange Nolina Canyon, Rancho Santa Ana. 152 Comment
  RSA12280  Lasthenia glabrata subsp. coulteri C. B. Wolf 1934-4-11 5655 Orange Bryant Ranch, east of Long Beach, along Bixby Ave., 0.5 mile west of Hansen Rd. 100 ft N of fence 8 Comment
  SEINET5585513  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2013-1 13 -39 Orange City of Lake Forest, along El Toro Rd. at Destry Rd. 211 Comment
  UCR170139  Lasthenia gracilis Jeffrey Ross, R. Zaka 1998-5-2 39 Orange South Coast, North side of San Joaquin Hills; William R. Mason Regional Park, near intersection of Yale Avenue and University Drive 27 Comment
  RSA0010308  Lasthenia gracilis J. D. Olmsted 1959-4-23 467 Orange Hidden Ranch in Black Star Canyon, 5 miles east of Irvine Lake. Drainage area to Irvine Res[ervoir]; Mt. Range: Santa Ana Mountains. 640 Comment
  SEINET6071273  Lathyrus laetiflorus Unknown 1988-1-12 5117 Orange Cleveland National Forest, San Juan Creek at Lower San Juan Campground. Comment
  RSA405709  Lathyrus vestitus subsp. laetiflorus E. Crow 1929-2-22 164 Orange Gypsum Canyon, Santa Ana Mountains. Near Corona. Comment
  RSA518451  Lathyrus vestitus subsp. laetiflorus Dorothy Tilforth, C. W. Tilforth 1977-3-6 1253 Orange Small canyon W of Gypsum Canyon, S side of Santa Ana River 152 Comment
  RSA405707  Lathyrus vestitus subsp. laetiflorus Christopher Davidson 1977-5-18 5632 Orange Cleveland National Forest, Falcon campground. 1006 Comment
  CHSC857  Lathyrus vestitus var. vestitus S. Westerberg 1938-5-1 Orange San Juan canyon. Comment
  UCR4078  Lavatera assurgentiflora Carole Sims 1965-3-28 s.n. Orange South Coastal Plains, Salt Creek Road off Pacific Coast Highway, between South Laguna and Dana Point 18 Comment
  RSA38452  Lavatera assurgentiflora subsp. assurgentiflora Carl B. Wolf 1944-11-29 11497 Orange Southeast of Costa Mesa Comment
  IRVC29729  Lemna Mark A. Elvin, Barry S. Nerhus 2006-11-4 5243 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA800663  Lemna Justin M. Wood 2010-9-29 2738 Orange Santa Ana Canyon: Santa Ana River, southwest of Green River Golf Course and north of Hwy 91 and Santa Ana River Trail. 128 Comment
  UCR196897  Leonurus sibiricus O. F. Clarke, A. C. Sanders 2008-2-19 s.n. Orange South Coast, Fullerton; weeds at Calif. St. Univ. Fullerton Arboretum 80 Comment
  RSA1076  Lepechinia cardiophylla J. T. Howell 1927-6-26 225 Orange Claymine Canyon, near Sierra Peak 610 Comment
  RSA171015  Lepechinia cardiophylla Robert F. Thorne 1963-7-26 32853 Orange Tin Mine Canyon above Beek s Spring, Trabuco District, Cleveland National Forest. 732 Comment
  UCR27070  Lepechinia cardiophylla T. P. Krantz 1981-6-18 s.n. Orange Santa Ana Mtns, Ridge west of Sierra Peak along the roadside Comment
  IRVC1088  Lepidium lasiocarpum D. Van Gorden 1965-4-2 Orange Anaheim and Meyer Field. Costa Mesa Comment
  POM21181  Lepidium lasiocarpum Helen D. Geis 1902-3-20 s.n. Orange Bed Santiago Creek. Comment
  UCR261701  Lepidium lasiocarpum Dick Newell, Judy Booth 2014-5-28 378 Orange South Coast, Newport Beach and Back Bay, edge of parking lot above Muth Interpretive Center 17 Comment
  SD236245  Lepidium latifolium A. C. Sanders, Fred M. Roberts 2008-9-18 36090 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lomas de Santiago, Santiago Creek Canyon ca. 0.5-0.8 miles above the highway bridge (El Toro 7.5'Q) 299 Comment
  IRVC29094  Lepidium nitidum Fred M. Roberts 1989-3-17 4209 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  RSA429634  Lepidium nitidum Jeannette B. Edge 1934-2-10 18851 Orange Corona Del Mar 30 Comment
  SD27942  Lepidium nitidum Carl B. Wolf 1932-2-15 2657 Orange Rancho Santa Ana Botanic Garden, above the Rubus beds 185 Comment
  JEPS53733  Lepidium perfoliatum R. H. Holland 1913-5-15 Orange Orange Comment
  POM180152  Lepidium pinnatifidum J. Ewan 1931-7-31 4759 Orange Smeltzer Comment
  JEPS53766  Lepidium virginicum Alice King 1908-3-9 Orange Santiago Creek, Anaheim plain Anaheim Comment
  UCR194550  Lepidium virginicum var. robinsonii A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35322 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 0.3 mi. west of Eastern Transportation Corridor (Hwy 241) and 1.45 mi. east of south end of Walnut Canyon Reservoir 335 Comment
  RSA783045  Lepidospartum J. D. Olmsted 1959-8-25 840 Orange Mouth of Black Star Canyon east of Santiago Reservoir 320 Comment
  RSA263693  Lepidospartum squamatum H. A. Zuill 1966-7-1 270 Orange Trabuco Canyon. Comment
  RSA754068  Lepidospartum squamatum A. C. Sanders, Fred M. Roberts 2008-7-16 35864 Orange Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 358 Comment
  RSA800662  Leptochloa fusca subsp. fascicularis Justin M. Wood 2010-9-29 2740 Orange Santa Ana Canyon: Santa Ana River, southwest of Green River Golf Course and north of Hwy 91 and Santa Ana River Trail. 128 Comment
  CDA32435  Leptochloa uninervia D. G. Kelch 2006-12-9 6 .552 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  RSA698316  Leptodactylon californicum Minor Warne 1934-4-7 s.n. Orange Santiago Canyon. Comment
  RSA734967  Leptodactylon californicum A. C. Sanders, Fred M. Roberts, A. O'Neal, D. E. Bramlet 2008-5-9 35302 Orange Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  RSA0030890  Leptodactylon californicum subsp. leptotrichomum B. D. Stark 1931-3-12 s.n. Orange West slope of Santa Ana Mts., 3 mi. no. of Modjeska's Home. 304 Comment
  SBBG128690  Leptosiphon floribundus subsp. floribundus R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49714 Orange Bedford Truck Trail, ca. 0.8 km below jct with Main Divide Truck Trail; Santa Ana Mtns Comment
  POM6380  Leptosiphon liniflorus P. A. Munz, L. T. Street, G. Williams 1919-5-3 2648 Orange Santa Ana River Canyon. Comment
  RSA0011212  Leptosiphon parviflorus Eileen McCollum 1932-4-3 s.n. Orange Near Mojeska's, Santa Ana Mts Comment
  OBI82197  Lessingia filaginifolia Andrew C. Sanders, Fred M. Roberts 2008-8-7 35970 Orange Peninsular Range; Santa Ana Mtns.: lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate (Orange/Black Star Cyn. 7.5' Qs.) 185 Comment
  RSA184056  Leymus condensatus I. L. Wiggins 1965-9-26 20255 Orange Carbon Canyon; about 3.5 miles above its mouth., [33 deg 55'N, 117 deg 50'20W] Comment
  RSA734905  Leymus condensatus A. C. Sanders 2008-5-28 35433 Orange Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  RSA0018625  Leymus condensatus R. H. McArthur 1934-5-19 s.n. Orange Trabuco Canyon Bottom. Comment
  LA22057  Lilium humboldtii subsp. humboldtii W. Pequegnat; 1938-6-15 sn Orange Santa Ana Mountains, Bear Springs Comment
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Jan 29 2015
  CDA1076  Limonium binervosum D. G. Kelch 2006-12-9 6 .547 Orange Along Newport Back Bay Dr. in side canyon. Comment
  IRVC29763  Limonium californicum Barry S. Nerhus, Mark A. Elvin 2006-11-4 8 Orange Huntington Beach, Bolsa Chica Wetlands, SW portion of Reserve beside Pacific Coast Highway. Southern Coastal 0 Comment
  RSA401668A  Limonium californicum var. mexicanum F. W. Peirson 1924-8-24 s.n. Orange 2.5 miles from Balboa on road inland. Comment
  RSA723486  Limonium duriusculum R. E. Riefner 2005-11-23 5 -772 Orange City of Newport Beach, Newport Bay, Bay View Dr. at Jamboree Rd. 6 Comment
  RSA161163  Limonium perezii Peter H. Raven 1957-9-28 11394 Orange Laguna Beach. Comment
  RSA716344  Limonium ramosissimum R. E. Riefner 2006-8-11 6 -386 Orange Upper Newport Bay, E of Back Bay - Bayside Dr. flats along Big Canyon Creek. 5 Comment
  RSA723499  Limonium ramosissimum R. E. Riefner 2005-10-5 5 -708 Orange City of Irvine, Bonita Creek, along La Salud St. near Milano Dr. 9 Comment
  CAS-BOT-BC226779  Linanthus californicus T. Cass 1975-4-11 1517 Orange Ladd Canyon Comment
  SD41252  Linanthus californicus Darley F. Howe 1946-6-3 Orange Santa Ana Mountains Comment
  RSA594875  Lindernia dubia Fred M. Roberts Jr., Wayne Ferren 1991-12-1 4830 Orange San Josquin Hills: Laguna Canyon, Upper Laguna Lake, 3.5 km N junction El Tprp Rd. , 4.9 km ENE Signal Peak; 113 Comment
  UCD123913  Lindernia dubia G. D. Barbe 1973-8-9 1693 Orange Bordier's Nursery, 7231 Irvine Blvd., Santa Ana (Tustin). Comment
  CAS-BOT-BC520399  Liquidambar styraciflua R. E. Riefner, Jr. 2014-11-28 14 -406 Orange City of Newport Beach, SW corner Jamboree Rd at MaArthur Blvd. 16 Comment
  RSA797821  Lithophragma affine subsp. mixtum R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49810 Orange Santa Ana Mountains: Trabuco Canyon Comment
  IRVC21382  Lobelia dunnii var. serrata A. S. Boughey 1968-7-9 405 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  IRVC299  Lobelia dunnii var. serrata D. Christy 1965-5-5 Orange Corona del Mar, Begonia St. Newport Beach Comment
  HSC6864  Lobularia maritima J. W. Johnson 1961-3-29 Orange Newport Beach, slope overlooking Upper Newport Bay. Comment
  RSA284  Loeflingia squarrosa J. T. Howell 1928-3-18 893 Orange Rancho Santa Ana, Botanic Garden. 152 Comment
  UCR170137  Lolium perenne subsp. multiflorum Jeffrey Ross, R. Zaka 1998-5-2 47 Orange South Coast, North side of San Joaquin Hills; William R. Mason Regional Park, near intersection of Yale Avenue and University Drive 27 Comment
  UCR193796  Lolium perenne subsp. perenne A. C. Sanders, Fred M. Roberts 2008-7-3 35707 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  UCD66645  Lolium temulentum A. A. Beetle 1942-4-19 3093 Orange 20 miles S of Santa Ana, road to Laguna. Comment
  RSA488121  Lomatium dasycarpum subsp. dasycarpum Fred M. Roberts, K. G. Marsh 1984-2-15 1193 Orange Caspers Regional Park: South rim of Lucas Cyn., 3.6 km NE Visitor Center; 0.7 km WNW Lucas Survey Mark 360 Comment
  RSA564109  Lomatium dasycarpum subsp. dasycarpum B. Pitzer, S. Hemstreet 1992-5-27 1956 Orange Cleveland National Forest. Along road (3S04) to Blue Jay Group Campground, off State Hwy 74 (Ortega Hwy). Approx. 2 mi. (airline) W of El Cariso Campground. 762 Comment
  SD152968  Lomatium lucidum Steve Boyd, Tim Ross 1992-5-20 7476 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area; western edge of the wilderness in Lucas Canyon, along foot trail upstream from end of old rodgrade to upper homestead. 349 Comment
  IRVC21254  Lomatium lucidum Fred M. Roberts 1982-7-7 735 Orange Niguel Hill, 1.6km SE Aliso Peak; 0.7km E BM 133, South Laguna 231 Comment
  UCR174025  Lonicera subspicata A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33052 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  UCR228771  Lonicera subspicata Dick Newell, Don Millar 2011-7-19 212 Orange Peninsular Range; Santa Ana Mtns., foothills above Black Star Canyon Rd. (SCE access road), 3.15 mi. ENE (83 deg. ) of Irvine Lake dam 494 Comment
  RSA768119  Lonicera subspicata var. johnstonii E. W. Lathrop 1974-6-27 7424 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA697961  Lotus americanus Minor Warne 1934-5-19 s.n. Orange Live oak Canyon. Comment
  RSA797909  Lotus crassifolius Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49819 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA732055  Lotus hamatus A. C. Sanders, Fred M. Roberts 2008-3-25 34520 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills. 259 Comment
  UC1719510  Lotus hamatus D. Atwood 1993-3-27 17693 Orange Corona del Mar State Park along Newport Coast Drive 0 Comment
  UCR192478  Lotus hamatus A. C. Sanders, Fred M. Roberts 2008-3-25 34520 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA599587  Lotus heermannii Fred M. Roberts, Trish Smith, Greg Nichols 1995-4-27 4935 Orange Irvine: San Joaquin Hills, Moro Canyon, Upper West Fork, c.a. 1.8 km SE Signal peak. 274 Comment
  POM50645  Lotus micranthus L. R. Abrams 1901-06 1825 Orange Santiago Peak Trail 915 Comment
  UCR193935  Lotus purshianus A. C. Sanders, Fred M. Roberts 2008-7-16 35854 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  RSA396  Lotus salsuginosus J. T. Howell 1927-6-3 23 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA697975  Lotus salsuginosus Olive Van Meter s.n. Orange Black Star Canyon. Comment
  RSA769616  Lotus scoparius E. W. Lathrop 1974-6-27 7415 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  UC511104  Lotus scoparius Lyman Benson 1932-3-26 3200 Orange Dana Point 60 Comment
  RSA303527  Lotus scoparius Jim Shevock 1970-12-20 568 Orange Newport Back Bay. 11 Comment
  SEINET2073834  Lotus scoparius R. Beal 1980-5-6 Orange Dana Point, above Pacific Ocean, top of sand hill. Comment
  UCR203987  Lotus scoparius var. scoparius Fred M. Roberts 2008-3-12 6729 Orange South Coast, Dana Point Headlands Center for Natural Lands Mgmt. Preserve, west side, c. 0.8 km west of Marine Institute, Dana Point Harbor 50 Comment
  RSA751166  Lotus strigosus D. E. Bramlet 2008-5-15 4271 Orange Upper Borrego Cyn. 152m east of the access road and 1.7km west of Santiago Cyn Road 450 Comment
  UCR191463  Lotus strigosus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34646 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 330 Comment
  UCR193815  Lotus strigosus A. C. Sanders, Fred M. Roberts 2008-7-16 35878 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 370 Comment
  UCR223433  Lotus strigosus Dick Newell, Don Millar 2011-2-8 053 Orange Peninsular Range; Santa Ana Mtns., MWD road overlooking Boy Scout Camp, just east of outdoor education property, 1.5 mi. NW (312 deg. ) of Irvine Lake dam 257 Comment
  IRVC20398  Lotus strigosus var. strigosus Fred M. Roberts 1983-3-27 947 Orange Dana Point headlands: just south of Dana Strand Rd., 0.5km W Dana Point Harbor; 0.8km SSW Richard Henry Dana School, southern coastal 80 Comment
  IRVC22208  Lotus strigosus var. strigosus Fred M. Roberts, Gordon Marsh 1985-4-3 1623 Orange Irvine: Irvine Ranch, just east of MacArthur, 1.4km W UCI campus center. Southern Coastal 30 Comment
  PASA1114  Lotus subpinnatus Frank W. Peirson 1922-5-18 Orange Santa Ana 137 Comment
  RSA406437  Lotus unifoliolatus M. B. Dunkle 1938-6-23 5382 Orange San Juan Canyon. Comment
  RSA562727  Lotus unifoliolatus Steve Boyd, T. S. Ross 1992-5-20 7463 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon along canyon floor from crossing Lucas Canyon Trail, upstream 1/4 mile to spur trail leading to old mining habitations in side canyon. 305 Comment
  UCR176751  Lupinus Robert Noll 1998-5-14 s.n. Orange Santa Ana Mtns., Santiago Canyon, due south of Irvine Lake on grassy slopes on a NE exposure 305 Comment
  RSA699290  Lupinus albifrons Minor Warne 1934-03 s.n. Orange Near Modjeska and S.A. Canyon Comment
  RSA413650  Lupinus albifrons var. eminens Albert J. Perkins 1923-6-24 s.n. Orange Silverado Canyon Comment
  JEPS65411  Lupinus bicolor Alice King 1908-4-18 Orange Santa Ana Mts. Comment
  RSA749847  Lupinus bicolor D. Bramlet, Weena Sangkatavat 2008-3-27 4130 Orange Bee Canyon, Bowerman landfill site. 528 m S of the Bee Canyon access road and 440 m W of the active landfill. Comment
  IRVC2301  Lupinus bicolor subsp. umbellatus John Schram 1965-5-1 HS 0420 Orange Corona Del Mar, Corona Highlands Southern Coastal Comment
  UCR46561  Lupinus excubitus B. G. Pitzer, D. C. Hawks 1986-10-21 342 Orange Peninsular Ranges; Santa Ana Mountains, Lomas de Santiago, c. 10 mi east of Santa Ana along Jeffrey Rd. in Hicks Canyon, c. 1.0 mi north of South Coast Gun Club 183 Comment
  IRVC17057  Lupinus excubitus var. hallii A. S. Boughey 1969-5-3 430 Orange Black Star Canyon on seaward side near crest. Santa Ana Mountains Comment
  LA205128  Lupinus latifolius W. E. Pequegnat; August 1937 34 Orange Santa Ana Mountains, Santiago Peak, Bear Springs Comment
  RSA413751  Lupinus latifolius subsp. parishii N. C. Cooper 1944-6-4 1336 Orange San Juan Canyon. 549 Comment
  RSA413752  Lupinus latifolius subsp. parishii N. C. Cooper 1949-5-1 3949 Orange San Juan Canyon 610 Comment
  RSA619107  Lupinus latifolius subsp. parishii R. S. Woglum 1932-4-16 s.n. Orange Trabuco Canyon, Santa Ana Mountains, Cleveland National Forest Comment
  POM2426  Lupinus longifolius D. L. Crawford 1916-5-10 735 Orange Laguna Mts. Comment
  RSA542382  Lupinus longifolius Fred M. Roberts, T. Sholars, B. Stechmeyer 1988-3-29 3878 Orange Santa Ana Mountains: Hot Springs Canyon, 0.5 km by road north Hwy 74, 0.9 km ESE Juan Rancho Survey Marker. 223 Comment
  UC1543209  Lupinus longifolius Donald G. Nelson 1935-4-6 218 Orange up San Juan Canyon (n from summer ranger station on main highway, e of San Juan Capistrano, just s of boundary of Cleveland National Forest); just s of boundary of Cleveland National Forest Comment
  UCR192070  Lupinus microcarpus A. C. Sanders, Fred M. Roberts 2008-5-6 35246 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  IRVC8673  Lupinus sparsiflorus Charles W. Sexton 1965-3-27 s.n. Orange Ortega Highway out of San Juan Capistrano Southern Coastal Comment
  RSA722341  Lupinus sparsiflorus Unspecified s.n. Orange Orange County park Comment
  IRVC2339  Lupinus sparsiflorus subsp. sparsiflorus J. Morgan 1965-4-14 s.n. Orange Laguna Canyon. Southern Coastal Comment
  RSA405  Lupinus sparsiflorus subsp. sparsiflorus J. T. Howell 1928-2-25 843 Orange Nolina Canyon, Rancho Santa Ana. 152 Comment
  IRVC2342  Lupinus succulentus 1965-4-18 HS 0416 Orange Trabuco Canyon. Santa Ana Mountains Comment
  IRVC24496  Lupinus succulentus Fred M. Roberts, Gordon Marsh 1986-2-28 2621 Orange Mission Viejo: N of Oso Parkway; 4.2km NNE Saddleback Community College. Southern Coastal 200 Comment
  RSA4839  Lupinus succulentus James Snow 1932-1 s.n. Orange Bryant Ranch, near Long Beach. Comment
  RSA653185  Lupinus succulentus David Barrios 1991-5-8 33 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 365 Comment
  UC1129752  Lupinus succulentus A. Lewis Mar 1934 348 Orange San Juan Hills; Corona Quad., San Juan Hills 396 Comment
  UCR281555  Lupinus succulentus Mitch Provance, Jeremiah George 2017-3-20 317- 120 Orange West Coyote Hills, Fullerton, vicinity of Utility Access Roads E of Gilbert Street and N of Castlewood Dr., on land previously occupied by oil fields. 137 Comment
  IRVC2344  Lupinus succulentus Bruce Reynolds 1965-4-3 HS 0419 Orange Corona Del Mar: Lincoln Junior High School Southern Coastal Comment
  RSA722342  Lupinus succulentus R. H. McArthur 1934-2-17 s.n. Orange Santa Ana Canyon. Comment
  IRVC2359  Lupinus truncatus C. Weir 1965-5-9 s.n. Orange Newport Beach, [Newport] Back Bay. Southern Coastal Comment
  RSA1700  Lupinus truncatus Carl B. Wolf 1931-3-6 1837 Orange Trabuco canyon, 1/2 mile above Trabuco Oaks, west slope of Santa Ana Mountains. 457 Comment
  RSA788818  Lupinus truncatus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49803 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA0055059  Lupinus truncatus James R. Shevock 1970-3-25 66 Orange Santa Ana Mountains. 381 Comment
  SD248500  Lycium brevipes R. E. Jr. Riefner 2012-6-22 12 273 Orange City of Newport Beach, Corona del Mar, Little Corona Beach, vicinity of Poppy Ave. and Ocean Blvd. 3 Comment
  UCR250330  Lycium brevipes R. E. Riefner Jr. 2012-6-22 12- 273 Orange city of Newport Beach, Corona del Mar, Little Corona Beach, vicinity of Poppy Ave. and Ocean Blvd. 4 Comment
  CAS-BOT-BC383072  Lycium brevipes var. hassei R. E. Riefner, Jr. 2014-4-12 14 -77 Orange City of San Clemente, San Clemente State Beach, SSW ca. 100 m from the intersection of Ave. Calafia and South Ola Vista Rd. 40 Comment
  SD248503  Lycium brevipes var. hassei R. E. Jr. Riefner 2014-4-12 14 77 Orange City of San Clemente, San Clemente State Beach, SSW ca. 100 m from the intersection of Ave. Calafia and South Ola Vista Rd. Along trail. 39 Comment
  UCR251748  Lycium brevipes var. hassei R. E. Riefner Jr. 2006-3-19 06- 58 Orange South Coast, City of San Clemente, San Clemente State Beach, SSW c. 100 m from the intersection of Ave. Calafia and South Ola Vista Rd. 40 Comment
  RSA201743  Lycium californicum Robert F. Thorne 1969-3-4 s.n. Orange 2.5 miles S of Corona del Mar 15 Comment
  UCR207557  Lycium californicum O. F. Clarke 2004-4-5 s.n. Orange South Coast, Newport Back Bay 3 Comment
  UCR267186  Lycium californicum Fred M. Roberts 2010-3-12 7176 Orange Southeast Coast, DANA POINT HEADLANDS: Harbor Point Park, South of Green Lantern and west of Dana Point Harbor, c. 150 meters SE Interpretive Center 50 Comment
  SBBG128745  Lycium californicum R. E. Riefner Jr. 2012-11-24 12 -558 Orange City of San Clemente, Presidio Ave ca. 0.2 mi S of Ave Pico 34 Comment
  IRVC29712  Lycopersicon esculentum Mark A. Elvin, Barry S. Nerhus 2006-11-4 5248 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA0014842  Lythrum californicum J. T. Howell 1927-7-15 403 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  RSA0014847  Lythrum californicum I. M. Johnston 1924-8-29 s.n. Orange 4 mi. S of Santa Ana. Comment
  SEINET12197184  Lythrum californicum S. A. Thompson, Rawlins, J. E. 1988-8-27 5263 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  UCSB25001  Lythrum hyssopifolia Booth, L. 1932-7-19 Orange Bolsas Creek Comment
  UCR188948  Macadamia integrifolia Robert DeRuff 2007-11-24 s.n. Orange Newport Beach, Upper Newport Bay, Back Bay Drive, lower bluff between 23rd Street and Mariners Drive 5 Comment
  CAS-BOT-BC342684  Madia elegans L. R. Abrams 1901-6-15 1817 Orange Santiago Peak trail Comment
  RSA797823  Madia gracilis R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49812 Orange Santa Ana Mountains: Trabuco Canyon Comment
  CLARK-A1528-5622  Madia sativa John C. Roos 1960-5-30 Orange Santa Ana Mountains Comment
  POM201634  Malacothamnus fasciculatus L. M. Booth 838 Orange Santa Ana Canyon. Comment
  POM257048  Malacothamnus fasciculatus W. Pequegnat 1940-5-26 s.n. Orange Black Star Canyon, on Skyline Drive, Santa Ana Mts. 610 Comment
  RSA13294  Malacothamnus fasciculatus Carl B. Wolf 1931-7-25 3893 Orange N side of pear orchard, Rancho Santa Ana, Santa Ana Canyon 122 Comment
  RSA433317  Malacothamnus fasciculatus Thekla Mohr 1917-04 1931 Orange Laguna. Comment
  UCR131893  Malacothamnus fasciculatus J. Mallory, V. McCoy 1995-7-3 6454- 103 Orange Santa Ana Mountains: Blind Canyon, c. 0.5 mi. east of confluence with Santiago Canyon, on a W-facing slope. north of Irvine Lake 300 Comment
  UCR98122  Malacothamnus fasciculatus George K. Helmkamp, E. A. Helmkamp 1997-4-24 1652 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, 1.6 mi. SE of Ortega Hwy (Calif. Hwy 74) on Rd. 7-S14 549 Comment
  SBBG87367  Malacothamnus fasciculatus var. fasciculatus K. Kimberley 1988-5-29 17 Orange Hwy 18, 2 mi SW of Irvine Lake 152 Comment
  RSA553110  Malacothamnus fasciculatus var. laxiflorus Fred M. Roberts 1989-5-9 4342 -A Orange Gypsum Canyon, west for,, 5.6 km WNW Sierra Peak, 1km S Hwy 91. 146 Comment
  CAS-BOT-BC322561  Malacothrix saxatilis var. saxatilis B. Pitzer; M. Georgiady 1997-4-5 3076 Orange Crystal Cove state Park along No Dogs Trail to just below intersection with Poles trail, San Joaquin Hills 152 Comment
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Nov 7 2017
  CDA1091  Malephora crocea D. G. Kelch 2006-12-9 6 .543 Orange Along Newport Back Bay Dr. in side canyon. Comment
  IRVC25416  Malephora crocea Fred M. Roberts, Wayne Ferren 1987-4-8 3355 Orange Upper Newport Back Bay, west side, North Star Beach, 0.8km N Coney Island, Newport Beach 0 Comment
  IRVC3285  Malosma laurina Fred M. Roberts, K. G. Marsh 1985-7-18 2057 Orange Temple Hill, Goff Ridge, 0.9km NE Goff Island off Nye Place Laguna Beach 168 Comment
  RSA448  Malosma laurina J. T. Howell 1927-7-24 466 Orange Claymine Canyon, near Sierra Peak 152 Comment
  RSA542520  Malosma laurina Fred M. Roberts, R. Fisher 1986-6-18 3018 Orange Irvine: Lower Shady Canyon, east slope, ca 2.6 km SE French Hill. 91 Comment
  RSA0051388  Malosma laurina Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49609 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  RSA0031758  Malva parviflora Robert F. Thorne 1977-11-21 50816 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  UCSB52905  Malva pseudolavatera Roberts, Fred 1985-4-24 Orange San Joaquin Hills: Laguna Canyon along Laguna Canyon Rd., 0.6km N jct, El Toro Rd,; UTM 3716450mN, 429300mE 22 Comment
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Feb 22 2019
  JEPS68666  Malvella leprosa Lawrence M. Booth 1932-7-21 1296 Orange Anaheim Creek Comment
  POM2953  Malvella leprosa P. A. Munz 1918-5-4 2205 Orange Laguna Lakes, Laguna. Comment
  RSA0093741  Malvella leprosa Fred M. Roberts 2014-4-21 7849 Orange South Coast. SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin. 113 Comment
  UCR158159  Malvella leprosa Adrian Wolf 1998-5-27 332 Orange South Coast, Newport Slough, south of oil fields, between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 2 Comment
  RSA801986  Marah macrocarpa var. macrocarpa Minor Warne 1934-2-1 s.n. Orange Santiago Canyon Comment
  UCR209346  Marrubium vulgare Fred M. Roberts 2008-4-15 6903 Orange Lomas de Santiago, Loma Ridge, Lower Hicks Canyon, east ridge, Conservation Trail, 1.6 km east-southeast of Rattlesnake Reservoir Dam and 2.7 km west-southwest of Bee Peak, Irvine Ranch Conservancy 172 Comment
  RSA791808  Marsilea drummondii R. E. Riefner Jr. 2007-9-30 7 -415 Orange City of Yorba Linda, Santa Ana Canyon, urban runoff tributary to Santa Ana River, La Palma Ave. at Via Lomas De Yorba East. 110 Comment
  UCD170385  Marsilea drummondii R. E. Riefner Jr. 2008-6-22 08- 209 Orange City of Yorba Linda, Santa Ana Canyon, Santa Ana River, La Palma Ave. near Old Village Road. 95 Comment
  UCR232928  Marsilea drummondii R. E. Riefner Jr. 2008-7-20 08- 243 Orange South Coast, city of Irvine, San Diego Creek at West Yale Loop Road Comment
  POM899  Marsilea vestita I. M. Johnston 1918-4-4 1979 Orange San Jacinto Hills [San Joaquin Hills], Lakes in Laguna Canyon 152 Comment
  POM900  Marsilea vestita D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon. Comment
  UCR208991  Marsilea vestita Arthur W. Haupt 1935-4-12 s.n. Orange South Coast, Costa Mesa 30 Comment
  UC574970  Marsilea vestita subsp. vestita Arthur Haupt 1935-4-12 Orange Costa Mesa Comment
  UC1543207  Matricaria discoidea Donald G. Nelson 1935-3-24 188 Orange s side Santa Ana Canyon (along highway to Riverside County, ne Orange County) Comment
  RSA771517  Meconella oregana var. denticulata Keith E. Hoffmaster 1934-4-22 181 Orange Santa Ana Mountains Comment
  IRVC2373  Medicago polymorpha Anonymous 1965-3-14 Orange Dana Point. Southern Coastal Comment
  IRVC2385  Medicago polymorpha Polly Brecht 1965-4-3 s.n. Orange Newport Beach; Redlands Dr. and Cherry Tree Lane. Southern Coastal Comment
  CAS-BOT-BC354338  Medicago truncatula R. E. Riefner, Jr. 2010-6-11 10 -62 Orange City of Fountain Valley, Southpark Ave. at Euclid St. 9 Comment
  CAS-BOT-BC532580  Medicago truncatula A. C. Sanders; Fred M. Roberts 2008-4-8 34738 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 457 Comment
  UCD170851  Medicago truncatula A. C. Sanders; Fred M. Roberts 2008-5-6 35258 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro. 470 Comment
  UCD170853  Medicago truncatula R. E. Riefner Jr. 2011-5-20 11 -55 Orange South Coast, city of San Clemente, Avenida La Pata one block west of Calle Extremo at entrance to Richard Steed Memorial Park. 161 Comment
  UCR208447  Medicago truncatula R. E. Riefner Jr. 2008-3-24 08- 64 Orange South Coast, Rancho Santa Margarita, Tijeras Canyon, north c. 0.5 mi from Meandering Trails Road on Antonio Parkway 221 Comment
  RSA746478  Medicago truncatula R. E. Riefner Jr. 2008-3-24 08 -64 Orange Rancho Santa Margarita, Tijeras Canyon, N ca. 0.5 mi from Meandering Trails Rd. on Antonio Pkwy. 221 Comment
  RSA722086  Melaleuca nesophila R. E. Riefner Jr. 2007-3-18 7 -151 Orange City of Newport Beach, N shore of Newport Bay, North Star Beach, general vicinity of North Star Ln. and Polaris Dr. 9 Comment
  SD243385  Melaleuca viminalis R. E. Riefner Jr. 2006-11-12 06 669 Orange City of Newport Beach, urban creek draining into San Diego Creek at confluence with Newport Bay near SR-73 overpass (San Joaquin Gun Club, Tustin 7.5'Q) 6 Comment
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Oct 4 2017
  UCR188928  Melianthus major Robert DeRuff 2007-11-24 s.n. Orange Newport Beach, Upper Newport Bay, above Back Bay Drive in the vicinity of the Narrows, c. 0.8 km north of Big Canyon 26 Comment
  CAS-BOT-BC271187  Melica Helen D. Geis 1902-1-1 555 Orange Hill near Santa Ana Comment
  HSC10354  Melica imperfecta C. L. Hitchcock, C. V. Muhlick 1964-3-17 23071 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  POM202497  Melica imperfecta L. M. Booth 1932-5-12 1032 Orange Newport Bay. Comment
  RSA681950  Melica imperfecta Fred M. Roberts, David E. Bramlet 2003-3-13 5579 Orange Donna O'Neill Land Conservancy: Ridge west of Christianitos Canyon, 1.6 km NW Sycamore Gate., (33 deg 29'37N, 117 deg 34' 16 W [UTM: 11S-04 46 936mE, 37 05 965mN.] 207 Comment
  RSA697718  Melica imperfecta Anonymous s.n. Orange Orange County park Comment
  RSA749487  Melica imperfecta Fred M. Roberts, Linda Farley 2008-3-28 6821 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork along ridge just west of SR241, 3.4 km E Robber's Peak, Irvine Land Conservancy. 437 Comment
  UC1543021  Melica imperfecta Donald G. Nelson 1935-4-6 213 Orange e of San Juan Capistrano (just s of boundary of Cleveland National Forest, up San Juan Canyon, small branching n-ward from summer ranger station on the main highway); San Juan Canyon Comment
  UCR192224  Melica imperfecta A. C. Sanders, Fred M. Roberts 2008-5-6 35265 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  RSA696596  Melica imperfecta J. Russell Bruff 1927-3-16 2 -I Orange Gun Club. Comment
  UCR220025  Melilotus albus Rebecca T. Vo 2010-6-5 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  RSA401  Melilotus albus J. T. Howell 1927-7-19 443 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  IRVC2411  Melilotus indicus Janet Morgan 1965-3-22 Orange San Clemente; Elmore Ranch. Southern Coastal Comment
  IRVC2416  Melilotus indicus McGuire 1965-3-14 s.n. Orange Newport Beach; Bayside Dr. Southern Coastal Comment
  IRVC2427  Melilotus indicus C. Hooven 1965-4-17 s.n. Orange Santa Ana Heights; Spruce Ave. and Palisades. Southern Coastal Comment
  RSA750902  Melilotus indicus A. C. Sanders, Fred M. Roberts 2008-7-3 35711 Orange Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  UCR154336  Melilotus indicus Mark A. Elvin 2004-5-2 3410 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  UCSB12537  Melilotus indicus Whittington, M. 1962-4-17 Orange Vacant lot south of Katella Avenue two blocks east of Tustin Avenue Comment
  UCSB48206  Melilotus indicus Roberts, Fred 1981-5-2 Orange Mission Viejo; Camino Capistrano, 1.7 km. N Crown Valley Parkway 49 Comment
  SEINET3828309  Melinis repens R. E. Riefner Jr. 2011-1 11 -98 Orange Fuel modification areas. Newport Beach, Orange County Parks & Recreation lands, along Newport Coast Drive, between Vista Ridge& Alteza Rd. 281 Comment
  IRVC25098  Melissa officinalis Fred M. Roberts, Gordon A. Marsh 1986-8-27 3121 Orange Santa Ana Mtns; Silverado Cyn, Silverado, 1.6km NNW Shrwsbury Spring. Peninsular Ranges 480 Comment
  RSA733975  Mentha spicata Keith E. Hoffmaster 1926-12-18 428 Orange Santa Ana. Comment
  UC1178607  Mentzelia micrantha Peter Kamb 1948-6-19 1109 Orange se Slope of Santiago Peak; Santa Ana Mts.; Orange County-Riverside County 1219 Comment
  RSA741704  Mentzelia micrantha R. E. Riefner Jr. 2007-6-11 07 -252 Orange Santa Ana Mtns., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, upper Fremont Canyon, Donaldson Ranch area. 382 Comment
  RSA759212  Mentzelia veatchiana Robt. Allen, Reginald Durant 2008-5-16 s.n. Orange Modjeska Peak, S face, base of a steep fire break cut from the summit down to the access road. Survey point 61. 1634 Comment
  JEPS42917  Mesembryanthemum crystallinum L. M. Booth 1932-6-29 1224 Orange Newport Bay Comment
  RSA5811  Mesembryanthemum crystallinum C. B. Wolf 1932-6-28 3771 Orange Along western half of no. boundary of 40 acre Valencia Orange grove at Bryant Ave. and Hansen Road. 9 Comment
  UCR93934  Mesembryanthemum crystallinum B. G. Pitzer 1996-4-30 2809 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  SEINET10973645  Mesembryanthemum nodiflorum Charlene A. Bennett 1976-7-22 Bennett 447 Orange Cutivated and native plants collected around the San Clemente Beach area. 3 Comment
  RSA704434  Micropus californicus Fred M. Roberts, David E. Bramlet 2004-4-21 6037 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Shady Canyon, tributary to Cristianitos Cyn., 1.05 km NW Sycamore Gate, 0.94 km W of Cristianitos Road. 158 Comment
  RSA773500  Micropus californicus var. californicus Fred M. Roberts 1999-5-14 5220 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Canyon, 0.7 km NW Bolero Spring and 2.6 km SW Silverado School 502 Comment
  UCR158148  Microseris douglasii subsp. douglasii Adrian Wolf 1998-5-10 256 Orange Santa Ana Mtns., Fremont Canyon ridge, 3.4 km NE of Irvine Lake, under powerlines 457 Comment
  RSA580940  Microseris douglasii subsp. platycarpha D. E. Bramlet 1994-4-30 2375 Orange At the base of the San Joaquin Hills and E of the Quail Hill area. Open flatlands 152m NW of the end of San Canyon Ave. and some 396m S of the San Diego Freeway. 42 Comment
  RSA608535  Microseris douglasii subsp. platycarpha D. E. Bramlet 1993-3-27 2297 Orange University of California, Irvine Campus, adjacent to the UCI Ecological Reserve. The site is 150 ft. SW of the end of Los Trancos Dr. & 250 ft. E of the reserve entrance. 61 Comment
  UCR158095  Microseris douglasii subsp. platycarpha Adrian Wolf 1998-5-4 203 Orange South Coast, Coastal Hills, Aliso/Woods Canyon Regional Park, Aliso Canyon 0.75 km SW of Woods Canyon, 2.25 km NNW of Aliso Water Treatment Plant, north of access road 30 Comment
  RSA625808  Microseris heterocarpa Scott D. White 1998-4-24 6347 Orange Mission Viejo Area: Aliso Creek watershed, E of El Toro Rd. just N of jct. w/ Valley Vista Wy. Large proposed subdivision called Saddleback Meadow. 305 Comment
  UCR107841  Microseris heterocarpa Scott D. White 1998-3-18 6213 Orange UCI, site of proposed research park, c. halfway between Berkeley Ave. and new freeway. 37 Comment
  UCR209371  Microseris heterocarpa Fred M. Roberts, Linda Farley 2008-3-28 6817 Orange Santa Ana Mountains, Upper Weir Canyon, Irvine Ranch Conservancy, east fork along ridge just west of SR 241, 3.4 km east of Robber's Peak 437 Comment
  UCR238203  Microseris heterocarpa Mark A. Elvin 2003-3-30 2395 Orange South Coast, north side of UC Irvine Preserve, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  RSA751989  Microseris lindleyi Fred M. Roberts, Eliza Maher 2008-3-26 6796 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  UCR191019  Microseris lindleyi A. C. Sanders, Fred M. Roberts 2008-4-22 35020 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  UCR215307  Microseris lindleyi Fred M. Roberts, Eliza L. Maher 2008-3-26 6796 Orange South Coast, Dana Point; Dana Point Headlands, Center for Natural Lands Mgmt. Preserve, 0.8 km west of Marine Institute, Dana Point Harbor 60 Comment
  JEPS87319  Mimulus David M. Thompson 1992-5-16 1067 Orange 2.4 mi n Hwy 1 (along Hwy 133 (Laguna Canyon Road)) 50 Comment
  UC217850  Mimulus P. A. Munz, R. D. Harwood 1920-4-24 3758 Orange Sierra Canyon Santa Ana Mts. 365 Comment
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Sep 17 2011
  UC943856  Mimulus H. E. McMinn, M. Van Rensselaer 1945-6-9 1911 A-F Orange ca. 5 mi e Laguna Beach (Laguna Canyon Highway) Comment
  RSA759107  Mimulus aurantiacus Robt. Allen, Reginald Durant 2008-9-28 s.n. Orange Laurel Spring, just below Harding Truck Trail. Survey Waypoint no. 85. Comment
  JEPS87335  Mimulus aurantiacus var. pubescens David M. Thompson 1992-5-16 1068 Orange 0.6 mi sw San Bernardino Co. line (along Carbon Canyon Road (Hwy 142)) 230 Comment
  POM311166  Mimulus aurantiacus var. pubescens H. E. McMinn, M. Van Rensselaer 1945-6-9 1909 -E Orange North slope Laguna Canyon ca. 4 mi. east of Laguna Beach. Comment
  RSA0013911  Mimulus aurantiacus var. pubescens Fred M. Roberts 2012-4-24 803784 Orange San Joaquin Hills: Buck Gully, tributary canyon below San Joaquin Hills Road and 2.0 km W Signal Peak 167 Comment
  RSA542494  Mimulus aurantiacus var. pubescens Fred M. Roberts, Carol A. Roberts 1988-5-12 3965 Orange Anaheim Hills: Upper Deer Canyon, 7.7 km W Sierra Peak. 268 Comment
  UCR241904  Mimulus aurantiacus var. pubescens Fred M. Roberts 2012-4-24 7522 Orange Peninsular Ranges; Coastal Foothills, San Joaquin Hills, Buck Gully, tributary canyon below San Joaquin Hills Road and 2.0 km W Signal Peak 167 Comment
  UCR97815  Mimulus aurantiacus var. pubescens Scott D. White 1997-3-28 4833 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  RSA298665  Mimulus aurantiacus var. puniceus D. C. Michener 1980-5-15 3661 Orange San Juan River drainage. Northwest facing slope in chaparral along unnamed creek. 500 Comment
  RSA749994  Mimulus brevipes A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35318 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  RSA0054841  Mimulus brevipes Keith E. Hoffmaster 1934-4-8 150 Orange Santa Ana mts. Comment
  RSA435530  Mimulus cardinalis Albert J. Perkins 1912-09 s.n. Orange Bank of stream East Orange Co. Comment
  RSA550817  Mimulus clevelandii David M. Thompson 1992-5-16 1065 Orange Santa Ana Mts. 3.9 mi N and W of Hwy 74 along USFS Road 3S04 (the N Divide Road). 1006 Comment
  POM46A  Mimulus floribundus D. L. Crawford 1916-07 s.n. Orange Near Laguna Comment
  RSA734757  Mimulus floribundus A. C. Sanders, T. B. Salvato 2008-5-13 35335 Orange Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence. 366 Comment
  UCSB47991  Mimulus floribundus Roberts, Fred 1980-7-7 Orange Santa Ana Mtns; San Juan Cyn; Hwy 74; 2.3km ENE San Juan Guard Station; 0.4km W Bench Mark 1100 315 Comment
  RSA710408  Mimulus guttatus Fred M. Roberts 2005-10-3 6296 Orange San Juan Capistrano: San Juan Creek wash, La Novia Road Bridge to 100m E of bridge, 1.4km E Mission San Juan Capistrano, 27 Comment
  UCR109743  Mimulus guttatus T. W. Fisher, R. E. Orth 1964-7-1 s.n. Orange Peninsular Range; Santa Ana Mtns., San Juan Creek off the Ortega Hwy 500 Comment
  IRVC28636  Mimulus pilosus Mark A. Elvin 2005-9-2 4491 Orange Santa Ana Mtns: along San Juan Creek, ca. 1.0km upstream from San Juan Hot Springs; off Ortega Hwy (74), near bridge. Peninsular Ranges 259 Comment
  POM48282  Mimulus pilosus I. M. Johnston 1924-7-10 s.n. Orange Laguna canyon Comment
  POM49740  Mimulus pilosus Helen D. Geis 1902-1 514 Orange [Unspecified] Comment
  CLARK-A1528-4272  Mimulus puniceus John C. Roos 1965-6-16 Orange Dana Point Comment
  POM6462  Minuartia douglasii P. A. Munz, L. T. Street, G. Williams 1919-5-3 2615 Orange Santa Ana River Canyon. Comment
  HSC16150  Mirabilis laevis J. W. Johnson 1961-3-29 Orange Newport Beach, on S side of upper Newport Bay Comment
  RSA698204  Mirabilis laevis Minor Warne 1934-03 s.n. Orange Laguna Canyon Forks Comment
  RSA751254  Mirabilis laevis A. C. Sanders, Fred M. Roberts 2008-7-16 35870 Orange Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon. 358 Comment
  CAS-BOT-BC434669  Mirabilis laevis var. crassifolia Carl B. Wolf 1932-3-8 2672 Orange 1/2 mi. No. of Corona Del Mar. Borders of Newport Bay. 7 Comment
  UC1287146  Mirabilis laevis var. crassifolia C. L. Hitchcock 1966-3-15 24143 Orange Stearns Lease, 1.5 miles E of Brea Comment
  CSUSB1384  Modiola caroliniana John N. Bullock 1970-4-3 Orange Found as weed in residential district, Boxwood Street, Anaheim (city). 45 Comment
  RSA38698  Modiola caroliniana E. L. Paddock 1943-9-10 s.n. Orange 1.5 miles NE of Brea Comment
  UCR14057  Monanthochloe littoralis Hyrum B. Johnson 1973-10-27 s.n. Orange Pacific Coast, Bolsa Chica State Beach 1 Comment
  CAS-BOT-BC219928  Monardella breweri subsp. lanceolata P. C. Everett 1935-6-19 7238 Orange Santa Ana Mts., Trabuco Canyon, 1 3/4 mi. below summit of Truck Trail 975 Comment
  RSA0005460  Monardella hypoleuca Percy C. Everett 1935-7-11 7266 Orange Santa Ana Mountains: Main Divide Motorway, 4 miles N from Ortega Hwy in San Juan Canyon. 1098 Comment
  RSA0006611  Monardella hypoleuca subsp. intermedia A. C. Sanders, M. A. Elvin 2005-9-2 31615 Orange Santa Ana Mtns.: upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks. 976 Comment
  SD239801  Monardella hypoleuca subsp. intermedia A. C. Sanders, Mark A. Elvin 2005-9-2 31613 Orange Santa Ana Mountains: near head of Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks, below the towers on Santiago Peak (Santiago Peak 7.5'Q) 997 Comment
  UCR158811  Monardella hypoleuca subsp. intermedia A. C. Sanders, Mark A. Elvin 2005-9-2 31609 Orange Santa Ana Mtns., upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks 970 Comment
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Aug 17 2012
  UCR199794  Monardella hypoleuca subsp. intermedia Justin M. Wood 2008-6-23 15 Orange Santa Ana Mountains, foothills, on the Irvine Ranch, south of Limestone Canyon, c. 1/2 mi south of the sinks 351 Comment
  IRVC28919  Monardella lanceolata Fred M. Roberts, Carol Roberts 1988-6-10 4092 Orange Santa Ana Mountains: Main Divide Truck Trail, Modjeska Pk., W slope, 1.1km SW of summit. Peninsular Ranges 1524 Comment
  UCSC001506  Monardella macrantha Peter Kamb 1948-6-19 1115 Orange Southeast slope of Santiago Peak Santiago Peak - Santa Ana Mts. 1219 Comment
  CAS-BOT-BC349571  Monolopia lanceolata Carl B. Wolf 1932-3-14 2709 Orange Rancho Santa Ana Botanic Garden, native to slope below Pinus radiata bed 192 Comment
  IRVC26702  Moraea karroica Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3168 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA598923  Muhlenbergia microsperma Scott D. White 1997-3-28 4853 Orange Above Modjeska Canyon, proposed water tank site 425 Comment
  UCD86820  Muhlenbergia microsperma A. A. Beetle 1942-4-19 3100 Orange Rt. 101. 5 miles south of Laguna Beach. Comment
  UCR235509  Muhlenbergia microsperma R. E. Riefner Jr. 2011-8-16 11- 99 Orange South Coast, Newport Beach, Orange County Parks and Recreation lands, along Newport Coast Drive, between Vista Ridge Road and Alteza Road 281 Comment
  UCR2585  Muhlenbergia microsperma F. M. Reed 1922-4-30 4721 Orange Arch Beach 229 Comment
  RSA0028023  Muhlenbergia rigens Fred M. Roberts 2012-9-6 7696 Orange San Joaquin Hills: Buck Gully, Buck Gully Trail, west end near Poppy Street entrance, 2.1 kilometers WNW Pelican Hill summit. 37 Comment
  RSA6660  Nassella cernua B. D. Stark 1933-5-2 4546 Orange Rancho Santa Ana. 457 Comment
  UCD87799  Nassella lepida A. A. Beetle 1942-4-19 3097 Orange Rt. 101. 5 miles south of Laguna Beach. Comment
  CAS-BOT-BC260105  Nassella pulchra John Thomas Howell 1927-6-9 2467 Orange N side, Santa Ana Canon [Santa Ana Canyon] 152 Comment
  RSA747596  Nassella pulchra Fred M. Roberts 2000-5-19 5329 Orange Lomas de Santiago: Loma Ridge, ridge west of Bee Peak above Bee Cyn. landfill, 0.2 km W Bee Peak. 500 Comment
  RSA703388  Nasturtium officinale R. E. Riefner Jr. 2003-11-30 3 -483 Orange Peters Canyon Channel at Alton St., E of Jamboree Rd. near Irvine City Hall. 22 Comment
  RSA113269  Nemacaulis denudata var. denudata E. K. Balls 1955-4-4 20419 Orange Coastal Strand, mouth of Santa Ana River, W bank, Hwy 101 Comment
  UCR230830  Nemacaulis denudata var. denudata Dick Newell 2011-6-17 176 Orange South Coast, Bolsa Chica Beach, Pacific Coast Hwy near Santa Ana River 5 Comment
  RSA421356  Nemophila menziesii Gale Sphon 1955-3-13 s.n. Orange Silverado Canyon Comment
  RSA682600  Nemophila menziesii Scott D. White, Amanda Duchardt 2003-3-27 8865 Orange Santa Ana Mountain Foothills: Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  UC484259  Nemophila menziesii C. B. Wolf 1931-3-6 1848 Orange 1 mi below Trabuco Camp Ground (Trabuco Canyon, w slope Santa Ana Mts.); w slope Santa Ana Mts., Trabuco Canyon 609 Comment
  RSA3166  Nemophila menziesii Carl B. Wolf 1932-3-8 2697 Orange Santiago Dam, W. base Santa Ana Mts. 305 Comment
  RSA733619  Nemophila menziesii Minor Warne 1934-03 s.n. Orange Near El Toro Comment
  RSA708532  Nerium oleander Fred M. Roberts, Robert L. Allen, Chris Barnhill 2004-8-21 6107 Orange Caspers Wilderness Park, San Juan Cyn., Old San Juan Hot Springs, c.a. 0.4km SW San Juan Ranger Station, north of SR 74. 214 Comment
  UCR218454  Nerium oleander Robert DeRuff 2009-1 132 Orange South Coast, Upper Newport Bay, Delhi Ditch and along Back Bay Drive 6 Comment
  UCR247906  Nerium oleander Fred M. Roberts 2013-6-12 7787 Orange Peninsular Ranges, SANTA ANA MTNS.: Lower Silverado Canyon along Silverado Creek on north side of Silverado Canyon Road, 0.6 km ENE Silverado School and 1.4 km up stream Black Star Road crossing. 320 Comment
  RSA0020229  Nicotiana attenuata J. Vlahos 1933-1 s.n. Orange Orange Co. Park. Comment
  RSA542352  Nicotiana bigelovii var. wallacei Fred M. Roberts, Gordon Marsh, Karlin G. Marsh 1988-4-26 3939 Orange San Joaquin Hills: hill between Pelican and Signal Hills, 0.8km ENE Pelican Hill. 207 Comment
  RSA0069235  Nicotiana clevelandii Fred M. Roberts, Lee Ann Caranza 2009-4-7 7140 Orange Dana Point Headlands: Dana Point CNLM Preserve, 0.8 km WNW Dana Point Marine Institute at Dana Point Harbor. 60 Comment
  RSA184099  Nicotiana glauca I. L. Wiggins 1965-11-6 20348 Orange Near well #14, Kramer Oil Estates, near end of county road to Rancho Santa Ana. Comment
  RSA573429  Nicotiana glauca Steve D. Boyd, Tim S. Ross 1994-9-14 8346 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon trail at stream crossing in Aliso Canyon. 341 Comment
  RSA651999  Nicotiana glauca Norman Willis 1948-2-8 s.n. Orange 2 miles E of Orange. 61 Comment
  RSA0060157  Nicotiana quadrivalvis A. C. Sanders, Fred M. Roberts 2008-4-8 34743 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  RSA263685  Nolina cismontana E. W. Lathrop 1976-6-28 7506 Orange 4 miles northeast of Lake Irvine, Black Star canyon, Cleveland Nat l Forest, Trabuco dist. Comment
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Jan 2 2008
  RSA648660  Nolina cismontana R. E. Riefner 2000-7-8 20 -628 Orange NCCP North Ranch Policy Plan Area. On ridgeline overlooking upper W fork of Fremont Canyon; located E of Main Divide Road and SE from Windy Ridge cypress forest. 438 Comment
  RSA746535  Nolina cismontana R. E. Riefner 2007-6-14 7 -256 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fork Fremont Canyon, Donaldson Ranch Area. 381 Comment
  RSA750901  Nothoscordum gracile A. C. Sanders 2008-7-3 35714 Orange Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Agustine Staging Area 260 Comment
  UCD169159  Nothoscordum gracile A. C Sanders 2008-7-3 35714 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Augustine Staging Area. 260 Comment
  UCR189550  Nyctocereus serpentinus Fred M. Roberts, R. L. Allen 2007-9-28 6615 Orange Santa Ana Mountains, Silverado Canyon, along Silverado Canyon Rd. at eastern edge of town of Silverado 347 Comment
  RSA531  Oenanthe sarmentosa J. T. Howell 1927-7-14 398 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  POM3074  Oenothera californica P. A. Munz 4117 Orange Anaheim. Comment
  UCR237928  Oenothera elata Dick Newell, Don Millar 2012-6-5 273 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Creek streambed at Hangmans Tree Rd. crossing 361 Comment
  CDA38146  Oenothera elata Mackessy & Patrick 1957-6-27 s.n. Orange Santa Ana River. 0 Comment
  UC1007119  Oenothera elata subsp. hirsutissima P. A. Munz 1936-6-30 14171 a Orange 5 mi s Garden Grove Comment
  POM259318  Oenothera elata subsp. hookeri P. A. Munz 1938-6-23 15569 Orange San Juan Creek, 1 mile below Capistrano. Comment
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Jun 2 2009
  RSA0029940  Oenothera speciosa Fred M. Roberts 2013-5-15 7772 Orange San Joaquin Hills: Buck Gully, north slope, Newport Beach, near Ocean Beach Drive, 1.8 km NW summit Pelican Hill. 122 Comment
  RSA792124  Oncosiphon piluliferum R. E. Riefner Jr. 2011-5-20 11 -57 Orange Newport Beach, Coastal Peak Park, East Coastal Peak Road at Ridge Park Road 305 Comment
  RSA649688  Opuntia R. E. Riefner 2000-8-23 20 -733 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek & immediately S. of major stream fork 305 Comment
  JEPS66886  Opuntia littoralis L. M. Booth 1933-10-24 Orange Newport Comment
  POM285259A  Opuntia littoralis Lyman Benson 1955-10-17 285259 Orange Moulton Ranch just west of the summit east of Laguna Beach. 152 Comment
  POM285259B  Opuntia littoralis Lyman Benson 1955-10-17 285259 Orange Moulton Ranch just west of the summit east of Laguna Beach. 152 Comment
  POM317068  Opuntia littoralis David Walkington 1963-2-7 67 Orange West side of N Euclid Ave. north of Sunny Hills West Home, Fullerton. 76 Comment
  UCR222870  Opuntia littoralis T. B. Salvato 2010-10-27 5125 Orange South Coast, Dana Point Headlands, Harbor Point Park, south of Scenic Dr. and Cove Rd., beyond the end of Green Lantern St., overlooking Dana Point Harbor 70 Comment
  CAS-BOT-BC56865  Opuntia oricola B. D. Stark 1933-1-17 4513 Orange Field redacted by CAS, contact the data manager for more information 152 Comment
  CAS-BOT-BC56866  Opuntia oricola B. D. Stark 1933-1-21 4520 Orange Field redacted by CAS, contact the data manager for more information 60 Comment
  RSA6608  Opuntia oricola B. D. Stark 1933-1-26 4527 Orange Rancho Santa Ana. Comment
  RSA0104810  Orobanche fasciculata R. S. Woglum 1941-6-20 s.n. Orange Peninsular Ranges: Harmony Ranch?, Santa Ana Canyon; Santa Ana Mountains [Orange/Riverside counties]. Comment
  RSA650905  Orthocarpus purpurascens Diane T. Liggett 1981-5-16 11 Orange Riverside Freeway (91) east to Imperial Hwy, south to Nohl Ranch Road, east to Serrano Ave., south on Hidden Cyn. Road, 1.2 km into Weir Cyn. Comment
  RSA790704  Orthocarpus purpurascens Jeanne Paxton 1934-4-21 5 Orange Modjeska Canyon. PR8. Comment
  IRVC29090  Orthocarpus purpurascens var. purpurascens Fred M. Roberts 1989-3-17 4205 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  JEPS20235  Osmadenia tenella J. Thomas Howell 1927-7-28 2867 Orange Santa Ana Canyon 182 Comment
  RSA684330  Osmadenia tenella Scott D. White, Amanda Duchardt 2003-4-10 9023 Orange Santa Ana Mountain Foothills: Ridges & east-facing canyons above Trampas Canyon. 122 Comment
  CAS-BOT-BC355780  Osmadenia tenella Palmer Stockwell 1935-5-12 1219 Orange Ca. 7 mi. E. of Mission San Juan, on Elsinore Rd. Comment
  HSC46607  Osmorhiza brachypoda Christopher Davidson 1977-5-18 5618 Orange Santa Ana Mts. Cleveland Nat. Forest. Bear Springs 1220 Comment
  SEINET10875323  Osteospermum ecklonis David B. Dunn 1971-8-13 Dunn 18120 Orange Cultivated plants vicinity of Laguna Beach. Comment
  UC1143153  Oxalis albicans subsp. californica A. Lewis 1934-2-1 262 Orange Santa Ana Canyon Corona quad 152 Comment
  RSA421  Oxalis californica J. T. Howell 1927-6-16 144 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  SEINET946136  Oxalis californica Robert Barr 1967-1 67190 Orange Along Santiago Canyon Road near Silveraldo Road; Santa Ana Montains. 259 Comment
  SEINET3347204 Image available Oxalis cernua J. R. Glen 1957-5-3 Orange .5 miles from the San Bernardino County line. 3 miles east of Olinda along Carbon Canyon road. 201 Comment
  RSA7752  Oxalis pes-caprae E. R. Johnson 1932-07 s.n. Orange Edge of orange grove along river bottom, Rancho Santa Ana Comment
  UCR89487  Oxalis pes-caprae Steve Boyd, T. S. Ross 1994-3-22 8203 B Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon along San Juan Creek, near confluence with Hot Springs Canyon 229 Comment
  RSA649941  Oxalis pes-caprae Ken Zysk 1971-3-19 P 102 Orange 500 feet off Nutwood Dr., Fullerton. 91 Comment
  UCR241054  Oxalis rubra Robert DeRuff 2011-4-14 379 B Orange South Coast, Upper Newport Bay, below Eastbluff North on bay side of Back Bay Dr. 4 Comment
  CAS-BOT-BC121213  Paeonia californica C. B. Wolf 1936-6-17 7949 Orange Santa Ana Mtns, along Ortega Hwy, 6/10 mi. below San Juan Hot Springs. 182 Comment
  RSA162751  Paeonia californica J. D. Olmsted 1958-3-4 19 Orange Small pond with westward drainage into Irvine lake, 250yards. West of Oak Flat fire road intersection, which is 9 miles southeast of Corona in Santa Ana Mts. 793 Comment
  UCSB41782  Paeonia californica Soper, Robert 1971-2-27 Orange Trabuco Cyn ca 2 mi. from paved road turn-off 365 Comment
  RSA797014  Pallenis maritima R. E. Riefner Jr. 2012-5-25 12 -393 Orange City of Dana Point, rocky shore between Mussel Cove and Salt Creek Beach. 2 Comment
  RSA644978  Panicum acuminatum var. acuminatum R. E. Riefner 2000-2-19 20 -117 Orange Santa Ana Mtns. NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek and immediately N. of major stream fork. 305 Comment
  SEINET11261327  Panicum miliaceum A. C. Sanders, Fred M. Roberts 2008-7-16 35865 Orange Peninsular Range, Santa Ana Mountains, Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon (El Toro 7.5' Q).; 0 358 Comment
  UCR193839  Panicum miliaceum A. C. Sanders, Fred M. Roberts 2008-7-16 35865 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 370 Comment
  UCD88687  Parapholis incurva Louis C. Wheeler 1947-5-3 6475 Orange Newport Bay. Comment
  RSA548851  Parapholis incurva Fred M. Roberts 1988-5-20 3974 Orange Irvine; University of CA, Irvine, near Farm School, 1.4km ESE campus center., UTM 3722500m N, 423200mE 46 Comment
  UCSB52898  Parietaria hespera Roberts, Fred; Roberts, Dar 1983-3-22 Orange Santa Ana Mtns.: San Juan Canyon, Calif. Rte. 74, south side, 4.3km by road E San Juan Guard Station; 2.3km WNW Sitton Peak 407 Comment
  RSA542524  Parietaria hespera var. californica Fred M. Roberts Jr. 1989-3-22 4223 Orange San joanquin Hills: Temple hill, Dripping Springs Cave, lateral to Wood Canyon; 2.6 km S moulton Peak. 76 Comment
  UCR230235  Parkinsonia aculeata Dick Newell, Don Millar 2011-3-22 090 Orange Peninsular Range; Santa Ana Mtns., Santiago Canyon Road, 1.2 miles east of 261 Toll Road 286 Comment
  CAS-BOT-BC478187  Parthenium hysterophorus Jan West 2015-4-22 s.n. Orange Santa Ana, SE corner of E 17th Street, and Lincoln Ave., 0.5 km east of I-5 on 17th, between RR tracks and Lincoln and adjacent dry waste strip in front of auto body and paint shop, east of tracks 49 Comment
  UCR174227  Paspalum dilatatum A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33031 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  RSA748265  Paspalum distichum A. C. Sanders, Fred M. Roberts 2008-6-17 35499 Orange Lomas de Santiago, West Loma Ridge Spur Road c. 0.8 mi SW of Irvine Lake and 0.9 mi. SE of Sheriff's Training Facility, just east of Hwy 241 280 Comment
  UC2061654  Paspalum distichum R. E. Riefner Jr. 2005-7-9 05 -544 Orange City of Mission Viejo, Oso creek, ca. 0.5 mi N of Paseo De Colinas on Camino Capistrano. Comment
  RSA91901  Paspalum distichum F. W. Peirson 1924-5-31 4648 Orange Laguna Canyon, near Laguna Beach 106 Comment
  RSA733056  Paspalum vaginatum R. E. Riefner 2008-1-13 41855 Orange City of Laguna Beach, Aliso Creek at Pacific Coast Hwy. 9 Comment
  SBBG133631  Paspalum vaginatum R. E. Riefner Jr. 2008-7-29 08 -256 Orange Salt Crk Beach, near Ritz Carlton Hotel; Dana Point 0 Comment
  UCD169410  Paspalum vaginatum R. E. Riefner Jr. 2012-10-21 12- 523 Orange City of Newport Beach, south of Poppy Street/Ocean Blvd, creek at base of stairs, Little Corona Beach. 7 Comment
  UCR204899  Paspalum vaginatum R. E. Riefner Jr. 2003-10-14 03- 456 Orange South Coast, city of San Juan Capistrano, Trabuco Creek, south side of Del Obispo Street at Paseo Adelento Street 26 Comment
  UCR191427  Pectocarya linearis A. C. Sanders, Fred M. Roberts 2008-4-8 34777 A Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon 495 Comment
  IRVC16237  Pectocarya linearis subsp. ferocula Karlin G. Marsh 1978-3-24 Orange UCI Ecological Preserve, Irvine Comment
  RSA1458  Pedicularis densiflora E. R. Johnson 1929-4-11 1259 Orange Sierra Peak Trail. Comment
  UCSB15065  Pedicularis densiflora Breedlove, Dennis 1962-3-9 Orange 14.3 miles east of San Juan Capistrano on State 74 335 Comment
  UCSB52873  Pedicularis densiflora A., D.; Roberts, Fred 1983-3-22 Orange Santa Ana Mts.: San Juan Canyon, along Hwy 74, 2.7 km ENE San Juan Guard Station; 3.7 km SSW Sugarloaf Peak 360 Comment
  RSA782219  Pelargonium Mark A. Elvin 2005-5-14 4313 Orange UCI Arboretum 15 Comment
  IRVC26703  Pelargonium echinatum Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3167 Orange UCI Arboretum Southern Coastal 15 Comment
  CHSC60  Pellaea andromedifolia S. Westerberg 1938-3-24 Orange Santa Ana. Comment
  RSA791471  Pellaea andromedifolia Keith E. Hoffmaster 1928-1-26 33 Orange Santa Ana Mtns Comment
  IRVC3151  Pellaea mucronata var. mucronata A. S. Boughey 144 Orange [San Juan Canyon], Ortega Hwy, 1mi E San Juan Guard Sta. Santa Ana Mountains Comment
  RSA660592  Pellaea mucronata var. mucronata R. E. Riefner, Adrian Wolf 2000-6-1 20 -452 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. USGS 7.5' Quad: Black Star Canyon. 518 Comment
  RSA328946  Pennisetum ciliare var. ciliare J. West 1983-10-8 s.n. Orange City of Orange. Comment
  UCD89453  Pennisetum purpureum F. M. Reed 1933-9-3 8030 Orange north of Dana Point. Comment
  SD175783  Pennisetum setaceum D. G. Kelch 2006-12-9 06 564 Orange Irvine, University Dr. along tidal Creek just east of I-73. Comment
  IRVC29788  Pennisetum setaceum Mark A. Elvin, Dean Kelch 2006-12-9 5311 Orange Irvine; San Diego Creek, edge of San Joaquin Marsh, beside University Dr., between Campus Dr. and Hwy 73. Southern Coastal 3 Comment
  RSA125875  Pennisetum setaceum P. H. Raven 1957-9-28 11395 Orange Laguna Beach. Comment
  VVC489  Penstemon cordifolius P. J. MacKay 1990-5-25 s.n. Orange Peninsular Range, Hwy 74 near San Juan Hot Springs 198 Comment
  RSA790700  Penstemon heterophyllus R. H. McArthur 1934-4-21 1 Orange PR8. Black Star Canyon. Comment
  UC718211  Penstemon laetus var. laetus Carl B. Wolf 1936-4-28 7778 Orange Santa Ana Canyon Botanic Garden s Adm. Bldg. (Rancho Santa Ana); , Santa Ana Canyon Botanic Garden 198 Comment
  RSA0015001  Penstemon spectabilis Fred M. Roberts 2008-5-22 6993 Orange Lomas de Santiago: Santiago Creek wash 0.3 km S Silverado Sch. and 3.8 km NW Bolero Lookout. Irvine Ranch Conservancy. 305 Comment
  RSA0054894  Penstemon spectabilis Keith E. Hoffmaster 1934-4-8 134 Orange Santa Ana mts. Comment
  NY661153  Penstemon spectabilis var. spectabilis F. R. Fosberg 1931-6-21 S 5085 Orange Lower Santiago Canyon Comment
  LA203846  Pentachaeta aurea LeRoy Abrams; 1903-4-17 3259 Orange near El Toro Comment
  POM351578  Pentachaeta aurea Theodore Payne 1910-4-18 1931 Orange Santiago Canyon Comment
  UC718583  Pentachaeta aurea P. C. Everett 1935-4-22 6463 Orange 1/4 mi w Horseshoe Bend; Santa Ana Canyon 121 Comment
  UCR192220  Pentachaeta aurea subsp. allenii A. C. Sanders, Fred M. Roberts 2008-5-6 35272 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 379 Comment
  UCR222664  Pentachaeta aurea subsp. allenii R. E. Riefner Jr. 2008-6-25 08- 169 Orange Peninsular Range; Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Lakeview SCE Road 480 Comment
  RSA741730  Pentachaeta aurea subsp. allenii R. E. Riefner 2008-6-25 08 -169 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Lakeview SCE Road. 480 Comment
  RSA687393  Pentagramma triangularis subsp. triangularis May N. Ackley 1925-05 83 Orange Silverado Canyon Comment
  RSA687405  Pentagramma triangularis subsp. triangularis Norman C. Cooper 1949-5-1 3951 Orange San Juan Canyon 610 Comment
  UCD116247  Peritoma arborea E. Frost 1996-5-11 11 Orange Newport Back Bay, 50 yards in along bike path. 7 Comment
  SEINET1907075  Persea steyermarkii R. W. Scora 1997-1 5146 Orange Zentmyer Avocado Collection, Field 3, South Coast Field Station, Irvine . 21 Comment
  RSA21070  Petunia parviflora Ramon Valverde 1938-8-4 9434 Orange Rancho Santa Ana, Santa Ana Canyon. 122 Comment
  RSA638969  Phacelia cicutaria var. hispida Valerie L. Soza, LeRoy Gross 1999-6-8 498 Orange Santa Ana Mountains: Santiago and Modjeska Canyons, above Tucker Wildlife Sanctuary, above the town of Modjeska 518 Comment
  UCR192455  Phacelia cicutaria var. hispida A. C. Sanders, Fred M. Roberts 2008-3-25 34575 Orange Peninsular Range; Santa Ana Mtns., saddle on ridge near head of Weir Canyon, 5.3 miles ENE of Villa Park, 3.1 mi. N of (Santiago Reservoir) Irvine Lake 405 Comment
  UCSB34159  Phacelia cicutaria var. hispida Nilsen, Erik; Roberts, Fred; Roberts, D. 1980-5-2 Orange Along Hwy. 74, 0.2 km. SSW of the entrance to the Lower San Juan Picnic area, San Juan Mountains 390 Comment
  RSA733877  Phacelia cicutaria var. hubbyi A. C. Sanders, Fred M. Roberts 2008-4-8 34745 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  SEINET4682011  Phacelia cryptantha W. Halvorson 1969-8-22 350 Orange 8 miles east of El Toro, California.; 0 61 Comment
  RSA697781  Phacelia distans Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts. PR8. Comment
  RSA699578  Phacelia distans Dorothy Sammis s.n. Orange Silverado Canyon Comment
  UCR223416  Phacelia distans Dick Newell, Don Millar 2011-2-8 049 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, upper Agua Chinon wash, along Limestone Canyon Rd. 398 Comment
  UCR230241  Phacelia distans Dick Newell, Don Millar 2011-3-15 085 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, top of Agua Chinon Wash along Limestone Cyn. Rd. 454 Comment
  UCR250853  Phacelia distans Dick Newell, Don Millar 2014-4-15 362 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Agua Chinon wash at the lower gate next to the 241 toll road 328 Comment
  RSA759261  Phacelia grandiflora Robt. Allen, Vicky Malton, Raul Murillo Jr. 2008-5-11 s.n. Orange Lomas de Santiago, Whiting Ranch Wilderness Park. Along Santiago Ranch Road. 436 Comment
  RSA20370  Phacelia minor Percy C. Everett 1938-4-11 9399 Orange Rancho Santa Ana, Santa Ana Canyon, north of Pear Orchard. 122 Comment
  RSA428089  Phacelia minor Albert J. Perkins 1914-6-14 s.n. Orange Santiago Peak. Comment
  RSA552939  Phacelia minor Fred M. Roberts, Carol A. Roberts 1989-4-20 4296 Orange Santa Ana Mtns: Upper Lion Canyon along San Juan Trail just south of Blue Jay Campground, 2.5km SE Los Pinos Peak. 980 Comment
  SEINET7073421  Phacelia minor A. G. Vestal 1963-4-24 s.n. Orange La Paz Canyon, Rancho Mission Viejo. Coordinate datum: NAD27. Comment
  UCR193499  Phacelia minor A. C. Sanders, T. B. Salvato 2008-5-13 35363 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  SEINET6971803  Phacelia minor W. P. Vestal, A. G. Vestal 1955-3-24 3458 Orange Trabuco Canyon, about 5 miles east of El Toro. Comment
  RSA20369  Phacelia parryi Percy C. Everett 1938-4-11 9400 Orange Rancho Santa Ana, Santa Ana canyon, N of W end of Walnut orchard. 122 Comment
  RSA699143  Phacelia parryi G. Gentges 1932-5-8 s.n. Orange Silverado Canyon Wash. Comment
  RSA725475  Phacelia parryi Fred M. Roberts, Megan Lulow 2007-7-30 6543 Orange Fremont Canyon, 1.3 km NE Irvine Lake spillway, North Irvine Ranch Policy Area. 253 Comment
  UCR239645  Phacelia ramosissima Fred M. Roberts 2012-5-9 7554 Orange Santa Ana Mountains, Lake Forest, along Serrano Creek hiking trail, 0.7 m south-southwest of intersection of Commercentre and Dimension Drives 152 Comment
  JEPS1031  Phacelia ramosissima var. austrolitoralis L. M. Booth 1932-5-19 1060 Orange Newport Bay Comment
  RSA428287A  Phacelia ramosissima var. latifolia F. R. Fosberg 1931-6-21 S- 5135 Orange Silverado Canyon, Santa Ana Mts. Comment
  RSA759206  Phacelia suaveolens subsp. keckii Robt. Allen, Reginald Durant 2008-5-16 s.n. Orange Modjeska Peak, S face, midway down a steep fire break cut from the summit down to the access road. Survey point #60. 1663 Comment
  SD119372  Phacelia suffrutescens Reid Moran 1977-6-13 24234 Orange Willow Canyon, tributary of Laguna Canyon, on shaded north slope. 124 Comment
  RSA650512  Phacelia tanacetifolia Grant Garland 1948-5-16 s.n. Orange Found off highway 101 below Santa Ana 30 Comment
  UCR152757  Phalaris lemmonii D. E. Bramlet 2003-6-8 3461 Orange South Coast, Fairview Park in Costa Mesa, 152 m west of Canyon School and 396 m NW of intersection of Wilson & Canyon Dr. 24 Comment
  IRVC8437  Phalaris minor J. B. Anderson 1966-4-18 597 Orange Irvine; MacArthur Blvd. near Red Hill Road. Southern Coastal Comment
  UCSB47955  Phalaris minor Roberts, Dar 1980-5-4 Orange Camino Capistrano Rd. below bridge (Crown Valley Pkwy.) 30 Comment
  UCSB48094  Phalaris minor Roberts, Fred 1981-4-11 Orange Highway 74: 5.2 km. E San Juan Capistrano, near San Juan Creek crossing 52 Comment
  POM8746  Pholistoma auritum P. A. Munz, R. D. Harwood 1920-4-25 3725 Orange Santa Ana Mountains, Silverado Canyon. 549 Comment
  RSA750925  Phoradendron macrophyllum A. C. Sanders, Fred M. Roberts 2008-7-3 35699 Orange Weir Canyon, along Windy Ridge Rd. at wash crossing, 0.95 mi. SE of Walnut Canyon Reservoir 242 Comment
  UCR145988  Phoradendron tomentosum June Latting 1977-1-12 s.n. Orange Chino Hills, Tonner Canyon 213 Comment
  POM3998  Phyla lanceolata D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon Comment
  POM48015  Phyla lanceolata I. M. Johnston 1924-8-29 s.n. Orange 1 mi. N of Los Alamitos. Comment
  RSA683955  Phyllospadix scouleri E. Yale Dawson 1957-11-21 17886 Orange Laguana Beach, Orange County Comment
  RSA684036  Phyllospadix torreyi E. Yale Dawson 1958-11-10 19789 Orange First rocky spit N of Dana Point. Station no 22. 270-300 ft from shore base point. Comment
  UCR266401  Physalis crassifolia D. E. Bramlet 1994-4-30 2374 Orange South Coast; San Joaquin Hills, small knoll SE of the Sand Canyon Reservoir, 524 ft. east of the bottom of Shady Canyon, near Irvine 80 Comment
  POM50618  Physalis greenei L. R. Abrams 1901-6-12 s.n. Orange Laguna. Comment
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Apr 23 2011
  RSA691  Physalis philadelphica J. T. Howell 1927-7-28 513 Orange West side, Rancho Santa Ana. 152 Comment
  RSA472042  Picris echioides James Henrickson 1970-7-25 5037 Orange 2.5 miles NE of Huntington beach, 1 mile SE of Warner Ave. on sandy slope of E. Pacific Coast Hwy. at border of Bolsa Chica Salt Marsh. 0 Comment
  RSA549230  Picris echioides Scott D. White 1992-9-23 843 a Orange Vicinity of Olinda, near city of Brea, immediately N of Carbon Cyn Rd & E of Placentia Ave.; ca. 1 mi. (airline) SSE of Tonner Cyn. 183 Comment
  UCR195021  Picris echioides A. C. Sanders, Fred M. Roberts 2008-8-7 35993 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  UC1713694  Pinus attenuata Carl B. Wolf 1934-12-21 6259 Orange 1.3 mi s summit of Skyline Drive (saddle nw of Sugarloaf Pk. (Pleasants Pk.), s slope of main ridge); Santa Ana Mountains 1158 Comment
  UCR231189  Pinus attenuata A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39943 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1143 Comment
  MACF024423  Pinus canariensis Roberta Tiedman 1977-4-27 Orange In front of the Letters and Sciences building. Comment
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Nov 17 2015
  RSA7645  Pinus coulteri C. B. Wolf 1933-12-24 5386 Orange Approximately the head of Highway Canyon on slope of Modjeska Peak, on the road to the Santa Ana Mts. Altitude 4000 ft 1220 Comment
  UC1134076  Pinus coulteri H. E. Norton 1931-3-3 33 Orange Santa Ana Mts. Corona Quadrangle Comment
  UCR194192  Pinus coulteri A. C. Sanders 2008-7-3 35715 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Agustine Staging Area 260 Comment
  CDA23161  Pinus halepensis Mark A. Elvin, D. G. Kelch 2006-12-9 5318 Orange Southern Coastal; Irvine; San Diego Creek, edge of San Joaquin Marsh, beside University Drive, between Campus Drive and Highway 73. Comment
  SD236117  Pinus halepensis A. C. Sanders, Fred M. Roberts 2008-9-18 36082 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 320 Comment
  RSA659356  Pinus halepensis P. Shirokawa 1998-5-15 42 Orange Cleveland National Forest- Trabuco Ranger District, 4.25 miles from Ortega Highway (State Highway 74) on North Main Divide Road, and 0.5 miles into Falcon campground 1067 Comment
  RSA651141  Pinus radiata Jack D. Ingwersen 1962-6-2 s.n. Orange Anaheim Comment
  UCR194193  Pinus sabiniana A. C. Sanders 2008-7-3 35716 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Agustine Staging Area 260 Comment
  SD154125  Piperia elongata Robert L. Allen, Christopher M. Barnhill 2004-1-10 12268 Orange Santa Ana Mtns,Trabuco Trail,ca. 0.7 trail miles(1127 m)NW of Los Pinos Saddle,middle of top I(c) of first switchback. In 10 m-long segment of trail, both sides & within 1 m of trail ctr;also below on trail switchback & down trail, decreasing in density. 1178 Comment
  UC1178460  Piperia leptopetala Peter Kamb 1948-6-19 1103 Orange Holy Jim Canyon Santa Ana Mts. 609 Comment
  RSA797819  Piperia unalascensis Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49808 Orange Santa Ana Mountains: Trabuco Canyon Comment
  UCR193349  Piptatherum miliaceum A. C. Sanders 2008-5-28 35438 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  CAS-BOT-BC354027  Plagiobothrys acanthocarpus R. E. Riefner, Jr. 2013-3-17 13 -44 Orange City of Irvine, Jeffrey Trail, vicinity of Shady Canyon Dr. at Fossil Rd. 47 Comment
  UCR192485  Plagiobothrys canescens A. C. Sanders, Fred M. Roberts 2008-3-25 34511 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  POM155843  Plagiobothrys collinus var. californicus L. R. Abrams 1903-4-15 3315 a Orange Buena Park. Comment
  RSA732156  Plagiobothrys nothofulvus A. C. Sanders, Fred M. Roberts 2008-4-22 35030 Orange Santa Ana Mtns.: Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 1200 Comment
  POM98152  Plagiobothrys nothofulvus P. A. Munz s.n. Orange Santa Ana Mountains, Silverado Canyon 549 Comment
  RSA588771  Plagiobothrys tenellus Fred M. Roberts, Carol A. Roberts, D. E. Bramlet 1990-5-6 4593 Orange Santa Ana Mnts.: Chiquito Basin, San Juan Trail, c.a. 2.5 km SSE Los Pinos Peak. 915 Comment
  UCR146230  Plantago coronopus Valerie Soza, Et al. 2001-4-4 1121 a Orange Coastal Plains & Basins; Los Angeles Basin region, Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  UCR152764  Plantago elongata subsp. elongata D. E. Bramlet 2004-3-26 3540 Orange South Coast, Fairview Park in Costa Mesa, 183 m west of Canyon School and 366 m NW of intersection of Wilson & Canyon Dr. 24 Comment
  HSC16827  Plantago erecta J. W. Johnson 1961-2-19 Orange Newport Beach, above upper Newport Bay Comment
  RSA682593  Plantago erecta Scott D. White 1998-3-24 6232 Orange University of California, Irvine Campus: Site of proposed Research Park, Southwest of main campus circle, ca. halfway between Beerkeley Avenue and new freeway (Bonita Canyon). 24 Comment
  RSA749286  Plantago erecta Fred M. Roberts, Linda Farley 2008-3-28 6834 Orange Santa Ana Mtns.: Upper Weir Cyn., Irvine Ranch Conservancy, 3.3 km ENE Robbers Peak on ridge north of canyon. 427 Comment
  UCR106273  Plantago erecta B. G. Pitzer 1997-3-25 3024 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  UCR138329  Plantago erecta R. E. Riefner Jr. 2000-3-14 20- 135 Orange Santa Ana Mtns., North Ranch Policy Plan Area, Along dirt road running N from Baker Canyon Road 305 Comment
  UCR209373  Plantago erecta Fred M. Roberts, Linda Farley 2008-3-28 6815 Orange Santa Ana Mountains, Upper Weir Canyon, Irvine Ranch Conservancy, east fork along ridge just west of SR 241, 3.4 km east of Robber's Peak 437 Comment
  RSA3165  Plantago erecta Carl B. Wolf 1932-3-8 2698 Orange Santiago Dam at W base of Santa Ana Mts. 305 Comment
  RSA734764  Plantago lanceolata A. C. Sanders, T. B. Salvato 2008-5-13 35345 Orange Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence. 366 Comment
  UC1618068  Plantago ovata Donald G. Nelson 1935-3-30 194 Orange On Tonner lease, mouth of Brea Canyon. Comment
  RSA0028737  Plantago pusilla R. E. Riefner 2000-3-14 20 -135 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Cyn.Road. 305 Comment
  SD241125  Plantago subnuda A. C. Sanders 2011-8-20 39889 Orange South Coast: city of Placentia, Tri-City Park on North Kraemer Blvd. at Golden Ave. (Yorba Linda 7.5'Q) 103 Comment
  UCR235457  Plantago subnuda A. C. Sanders 2011-8-20 39889 Orange South Coast, city of Placentia, Tri-City Park on North Kraemer Blvd. at Golden Ave. 104 Comment
  RSA749040  Platanus X acerifolia A. C. Sanders, Fred M. Roberts 2008-8-7 35976 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  SD236357  Platanus acerifolia A. C. Sanders, Fred M. Roberts 2008-8-7 35976 Orange Peninsular Range; Santa Ana mountains: lower Weir Canyon , at narrow gorge c. 0.6 miles above moth of cyn at Irvine Ranch gate. 185 Comment
  UCR195023  Platanus acerifolia A. C. Sanders, Fred M. Roberts 2008-8-7 35976 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  UCR239625  Platanus acerifolia Fred M. Roberts 2012-4-24 7495 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  SEINET7779659  Platanus racemosa Unknown 1966-8-22 2390 Orange O'Neill State Park, about 20 miles southeast of Anaheim Comment
  SEINET12102790  Platystemon californicus Unknown 1884-1 s.n. Orange Anaheim Comment
  OBI81438  Plecostachys serpyllifolia Unknown 2008-7-9 08 -220 Orange City of Laguna Beach, bluff area W of West St. and Pacific Coast Highway. 5 Comment
  SBBG126057  Plecostachys serpyllifolia R. E. Riefner Jr. 2009-7-18 09 -151 Orange beach near Salt Crk, vicinity of Ritz Carlton Resort; City of Dana Point 2 Comment
  SD218285  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-3-18 07 153 Orange City of Newport Beach, Dover Beach, Newport Bay, vicinity of Morning Star Ln. and Polaris Dr. Comment
  SEINET3828848  Plecostachys serpyllifolia R. E. Riefner, Jr. 2011-1 11 -73 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 2 Comment
  SEINET6413740  Plecostachys serpyllifolia R. Spellenberg 2014-5-6 14775 Orange Laguna Beach, Aliso Creek Beach Park; ca 500 m S of lat/long. 1 Comment
  UC2061635  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-3-18 07 -153 Orange City of Newport Beach, Dover Beach, Newport Bay, vicinity of Morning Star Ln. and Polaris Dr. Comment
  UC2061641  Plecostachys serpyllifolia R. E. Riefner Jr. 2005-9-9 05 -654 Orange City of Lake Forest, Aliso Creek, S side of Portola Parkway and W of El Toro Road. Comment
  UCR229286  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-7-7 11- 88 Orange city of Dana Point, south of Mussel Cove, north of Salt Creek Beach Park 9 Comment
  UCR230581  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-6-25 11- 71 Orange South Coast, city of Laguna Beach, Woods Cove, vicinity of Ocean Way at Pearl Street 9 Comment
  RSA801997  Plectritis ciliosa Keith E. Hoffmaster 1935-5-5 971 Orange San Juan Canyon., Santa Ana Mts. Comment
  RSA48860  Pluchea odorata J. C. Roos 1949-10-1 4684 Orange Doheney Beach. 3 Comment
  RSA131096  Pluchea odorata E. K. Balls, E. R. Blakley 1958-10-15 23721 Orange In Narrow Canyon E oif Laguna Canyon, S side Santa Cruz Island. 5 Comment
Read comments
Jun 27 2013
  UCSB36216  Pluchea odorata Ferren, Wayne; Roberts, Fred 1980-8-27 Orange Vicinity of Newport Backbay Drive ca. 1.5 km. NE of Rt. 1, Newport Beach Comment
  IRVC17048  Poa annua Bruce Reynolds 1965-4-19 s.n. Orange Newport Beach; Corona del Mar, Corona Del Mar High School. Southern Coastal Comment
  SEINET3123526 Image available Poa annua A. C. Sanders, T. B. Salvato 2008-1 35357 Orange Peninsular Range; Santa Ana Mtns.; Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  CLARK-A1528-3939  Polygala cornuta subsp. fishiae John C. Roos 1960-5-30 Orange Santa Ana Mountains Comment
  UCR158812  Polygala cornuta subsp. fishiae A. C. Sanders, Mark A. Elvin 2005-9-2 31608 Orange Santa Ana Mtns., upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks 881 Comment
  RSA425  Polygala cornuta var. fishiae J. T. Howell 1927-7-3 258 Orange Claymine Canyon near Sierra Peak. 305 Comment
  RSA649675  Polygala cornuta var. fishiae R. E. Riefner 2000-6-13 20 -494 Orange North Ranch Policy Plan Area, N Fremont Canyon S of Donaldson Ranch, upper W fork of Fremont Canyon drainage 363 Comment
  UCR195017  Polygonum aviculare A. C. Sanders, Fred M. Roberts 2008-8-7 35972 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  POM201766  Polygonum aviculare subsp. aviculare L. M. Booth 1932-7-4 1254 Orange Newport Lagoon. Comment
  RSA21059  Polygonum fusiforme Ramon Valverde 1938-8-4 9445 Orange Rancho Santa Ana, Santa Ana Canyon. 122 Comment
  RSA683226  Polygonum lapathifolium Scott D. White, Matt Carlton 2003-11-20 9869 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (San Juan Capistrano). 24 Comment
  RSA717156  Polygonum lapathifolium Fred M. Roberts, Chris M. Barnhill 2005-9-27 6274 Orange San Juan Capistrano: San Juan Creek wash, east of La Novia Road bridge, 1.4 km E Mission San Juan Capistrano. 27 Comment
  RSA751267  Polygonum lapathifolium A. C. Sanders, Fred M. Roberts 2008-7-16 35872 Orange Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon. 358 Comment
  UC536916  Polygonum lapathifolium Lawrence M. Booth 1932-6-28 1221 Orange Bolsas Marsh Comment
  RSA599648  Polygonum lapathifolium Fred M. Roberts 1995-4-21 4929 Orange Irvine: San Joaquin Hills, Quail Hill area near end of San Canyon Road, 2.9 km ENE French Hill. 49 Comment
  IRVC3042  Polypodium californicum G. Howard 1965-3-31 HS0571 Orange Silverado Canyon. Santa Ana Mountains Comment
  RSA773504  Polypodium californicum Fred M. Roberts 1999-5-14 5224 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Canyon, 0.7 km NW Bolero Spring and 2.6 km SW Silverado School 490 Comment
  UCR280606  Polypodium californicum R. E. Riefner Jr. 2017-3-31 17- 137 Orange South Coast, city of San Clemente, San Clemente State Beach, northwest bluff area immediately south of Ave. Calafia 24 Comment
  UCSB47608  Polypodium californicum Roberts, Fred 1980-5-3 Orange Santa Ana Mtns., San Juan Cayon near mouth of Viejo Canyo, below Rte. 74, 2.5km by road ENE San Juan Guard Station, 0.5km WSW Bm 1100 288 Comment
  IRVC19368  Polypodium californicum R. L. Allen 1977-2-13 s.n. Orange [San Juan Canyon], Ortega Hwy, roadside 111; small side canyon, NW of main canyon. Santa Ana Mountains Comment
  IRVC1810  Polypogon monspeliensis J. B. Anderson 1966-4-22 607 Orange San Joaquin Hills: Los Trancos Canyon, along dirt road and near spring. Santa Ana Mountains 122 Comment
  IRVC1813  Polypogon monspeliensis C. Hooven 1965-4-10 s.n. Orange Spruce and Palisades (sic). southern coastal Comment
  IRVC29711  Polypogon monspeliensis Mark A. Elvin, Barry S. Nerhus 2006-11-4 5247 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA696314  Polypogon monspeliensis Anonymous s.n. Orange Santa Ana. Comment
  UCR100453  Polypogon monspeliensis B. G. Pitzer 1996-4-30 2773 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR220032  Polypogon monspeliensis Rebecca T. Vo 2010-6-5 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  UCR99548  Polypogon monspeliensis B. G. Pitzer 1996-4-30 2799 B Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  UCSB48109  Polypogon monspeliensis Roberts, Fred 1981-4-12 Orange Santa Ana Mtns.: San Juan Canyon, Hwy. 74, 1.3 km. by road E San Juan Guard Sta., 0.9 km. SE Juan Rancho Survey Marker 295 Comment
  RSA696614  Polypogon monspeliensis Rankin s.n. Orange Costa Mesa. Comment
  RSA679095  Polystichum imbricans subsp. curtum Fred M. Roberts 2003-6-25 5950 Orange Santiago peak, north slopes along ridge east of Main Divide truck trail, 0.6km NNW summit. 1605 Comment
  RSA5327  Populus fremontii B. D. Stark 1932-12-30 4468 Orange Rancho Santa Ana. River bottom below Mexican houses. 122 Comment
  CAS-BOT-BC105608  Populus trichocarpa John Thomas Howell 1927-7-21 2809 Orange On edge of marshy place but above water, Santa Ana River bottom, Santa Ana Canyon [Canon] 152 Comment
  CLARK-A1528-4065  Populus trichocarpa Alfred R. Roos 1936-2-9 1535 Orange Santa Ana Canyon Comment
  SD212718  Populus trichocarpa A. C. Sanders, Fred M. Roberts and Michelle Balk 2006-7-20 33023 Orange Santa Ana Mountains: San Juan Canyon, from Lower San Juan Picnis Area to circa 1 mile downstream, parallel to Highway 74 and near Riverside County line 366 Comment
  POM266317  Porophyllum gracile J. C. Roos 1937-5-10 2337 Orange East of San Juan Capistrano. Comment
  RSA488122  Porophyllum gracile Karlin G. Marsh 1984-2-15 1188 Orange Santa Ana Mtns: Casper's Regional Park, Rancho Carrillo Road, 4.4km NE visitor Center, 0.5km ENE Lucas Survey Mark, alt 415m 415 Comment
  UCR149034  Porophyllum ruderale Ralph Guerrero 2000-10-24 PDR 1223098 Orange Coastal Plains and Basins; South Coastal Plains region, Along roadside of vegetable crop field, Seal Beach Naval Weapons Station, Seal Beach Comment
  RSA671152  Porophyllum ruderale Ralph Guerrero 2000-10-24 10 -2000 Orange Along roadside of vegetable crop field, Seal Beach Naval Weapons Station, Seal Beach. Comment
  UCR156568  Prosopis velutina Karlin G. Marsh 1983-9-21 s.n. Orange San Juan Capistrano 183 Comment
  RSA542401  Prunus ilicifolia Fred M. Roberts Jr. 1986-11-5 3209 Orange Main Divide Truck Trail, 1.8 km WNW Pleasants Peak. 1130 Comment
  RSA542402  Prunus ilicifolia Fred M. Roberts Jr., Carol A. Williams 1988-3-8 3826 Orange San Juan Canyon, Hwy 74, 1.2 km SSW Lower San Juan Picnic Ground. 378 Comment
  RSA701207  Prunus ilicifolia Keith E. Hoffmaster 1934-4-22 s.n. Orange Santa Ana Mountains Comment
  CAS-BOT-BC356379  Pseudognaphalium beneolens John Thomas Howell 1927-7-16 2782 Orange Hills on north side of Santa Ana Canon [Canyon] 152 Comment
  JEPS20431  Pseudognaphalium biolettii L. M. Booth 1932-5-19 1067 Orange Newport Bay Comment
  RSA609007  Pseudognaphalium biolettii L. M. Booth 1932-5-19 1067 Orange Newport Bay Comment
  RSA696918  Pseudognaphalium biolettii Snow 1929-3-11 36 Orange W. of Orange Co. Park Comment
  UCR222874  Pseudognaphalium biolettii T. B. Salvato 2010-10-27 5134 Orange South Coast, Dana Point Headlands, Hilltop Park, north of Scenic Dr. and west of Green Lantern St., overlooking Dana Point Harbor 84 Comment
  UC484151  Pseudognaphalium leucocephalum J. T. Howell 1928-9-6 1208 Orange Rancho Santa Ana Santa Ana River bottom, Rancho Santa Ana 152 Comment
  UCSB48107  Pseudognaphalium luteoalbum Roberts, Jr., Fred 1981-4-12 Orange Santa Ana Mtns.; San Juan Canyon, Hwy. 74, 1.3 km. by road E San Juan Guard Station; 0.9 km. SE Juan Rancho Survey Marker 295 Comment
  CAS-BOT-BC356983  Pseudognaphalium luteoalbum Alice Eastwood 1936-4-5 s.n. Orange Bixby Botanic Garden, Santa Ana Comment
  UC537030  Pseudognaphalium stramineum Lawrence M. Booth 1932-7-19 1275 Orange Bolsas Marsh Comment
  IRVC20774  Pseudotsuga macrocarpa Fred M. Roberts 1980-5-3 63 Orange Main Divide Truck Trail, 0.4km W Trabuco Peak. Santa Ana Mountains 1341 Comment
  UCR152760  Psilocarphus brevissimus var. brevissimus D. E. Bramlet 2004-3-26 3543 Orange South Coast, Fairview Park in Costa Mesa, 183 m west of Canyon School and 366 m NW of intersection of Wilson & Canyon Dr. 24 Comment
  UCSB56681  Psilocarphus tenellus Roberts, Jr., Fred 1983-5-1 Orange Dana Point; hills, 1.0 km. NNW Dana Hills Highwa School; 1.6 km. NE Bench Mark 150 98 Comment
  CAS-BOT-BC506648  Psilotum nudum R. E. Riefner, Jr. 2015-8-27 15 -357 Orange Cit of Newport Beach, N side of North Coast Hwy, E side of La Brea St. 31 Comment
  IRVC28199  Psoralea macrostachya A. C. Sanders, Mark A. Elvin 2005-9-2 31605 Orange Upper Holy Jim Canyon, a major tributary of Trabuco Cyn, along the trail in switchbacks. Peninsular Ranges, Santa Ana Mtns 820 Comment
  RSA771718  Pteridium aquilinum Robert Allen, Richard S. Newell, Roger E. Reinke 2006-6-30 s.n. Orange Santa Ana Mts., Holy Jim Canyon Trail. About 1 mile up trail from forest gate. 609 Comment
  POM8723  Pterostegia drymarioides P. A. Munz, R. D. Harwood 1920-4-17 3802 Orange Laguna Canyon. 61 Comment
  RSA737547  Pterostegia drymarioides Fred M. Roberts 2008-3-12 6714 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA407877  Pulicaria hispanica Walter Wisura, B. Busenberg 1987-7-23 4170 Orange Newport Bay at jctn. of Back Bay Drive and San Joaquin Hills Road. Comment
  RSA591804  Pulicaria hispanica P. H. Raven 1961-10-15 16857 Orange Dyke along road to Yorba Linda just north of US Hwy 91 114 Comment
  JEPS35293  Pulicaria paludosa R. L. Pope 1963-9-23 Orange approx 0.75 mi above Yorba Linda Bridge; Sanat Ana Canyon Comment
  OBI5232  Pulicaria paludosa T. C. Fuller 1993-10-9 11362 Orange Santa Ana cyn, 0.1 mi S of riverside fwy to Anaheim, ca 2 mi W of the Riverside Co. line Comment
  RSA750903  Pulicaria paludosa A. C. Sanders, Fred M. Roberts 2008-7-3 35710 Orange Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  UCR116013  Pulicaria paludosa George K. Helmkamp, E. A. Helmkamp 2000-10-18 6230 Orange Newport Bay, South side of the back bay. 6 Comment
  UCR130487  Pulicaria paludosa R. E. Riefner Jr. 2002-5-4 02- 93 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR211082  Pulicaria paludosa Joseph Cahill 2009-8-21 3172 B Orange South Coast, Bolsa Chica Ecological Reserve 1 Comment
  UCD47714  Quercus X acutidens John M. Tucker 1941-5-30 255 Orange Low shrub, in San Juan Canyon, 200 yards west of San Juan Guard Station, Highway 74, Orange County, California. Comment
  UCD47720  Quercus X acutidens James Trumbley 1980-1 s.n. Orange Crystal Cove State Park, ca. 1 mile inland, in Moro Canyon, a coastal canyon between Laguna Beach and Corona del Mar, Orange County, California. 30 Comment
  RSA12361  Quercus X grandidentata E. R. Johnson 1934-1-6 5561 Orange Santa Ana Mts., on slopes of Sierra Peak at about the head of Claymine Canyon. 762 Comment
  RSA154  Quercus agrifolia J. T. Howell 1927-6-21 179 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA476854  Quercus agrifolia Claire Kibbe 1936-07 19954 Orange Santa Ana Canyon. Comment
  RSA697622  Quercus agrifolia Unspecified s.n. Orange Orange County park. Comment
  UCR131878  Quercus agrifolia J. Mallory, V. McCoy 1995-7-3 6454- 96 Orange Santa Ana Mountains: Blind Canyon, c. 0.5 mi. east of confluence with Santiago Canyon, on a W-facing slope. north of Irvine Lake 300 Comment
  RSA657748  Quercus agrifolia var. agrifolia Ken Greby 1985-5-20 44 Orange behind PG and E substation located 2 km. SE from Laguna Canyon Td., on El Toro Rd., adjacent to Leisure World. Comment
  UCSB48077  Quercus agrifolia var. agrifolia Roberts, Fred 1981-4-11 Orange Santa Ana Mtns., San Juan Canyon, Hwy 74, 2.7km ENE San Juan Guard Station 96 Comment
  IRVC24487  Quercus berberidifolia Fred M. Roberts 1986-2-28 2600 Orange Lateral to English Canyon along Vista Del Lago; 3.4km ENE El Toro Fire Station, in ravine at base of north-facing slope. Mission Viejo 236 Comment
  IRVC8572  Quercus berberidifolia A. S. Boughey, Pat Pembrook 1965-6-8 1013 Orange San Juaquin Hills; Los Trancos Cyn; fork at road bottom. Southern Coastal Comment
  UCR132977  Quercus berberidifolia Adrian Wolf 2000-6-1 467 Orange Santa Ana Mtns., North Ranch Policy Plan Area, West Fremont Canyon 534 Comment
  UCR246514  Quercus berberidifolia Fred M. Roberts 2013-5-30 7779 Orange Lomas de Santiago, Santiago Creek Wash, at Santiago Canyon Road bridge, south side, 0.3 km west of the junction of Silverado and Santiago Canyon Roads 299 Comment
  RSA0041589  Quercus berberidifolia E. R. Johnson 1934-1-6 5565 Orange Santa Ana Mts., on slopes of Sierra Peak at about the head of Claymine Canyon. 762 Comment
  RSA0105422  Quercus berberidifolia Keith E. Hoffmaster 1930-1 406 Orange Santa Ana Mts. Comment
  RSA477084  Quercus berberidifolia George C. Johnston 1902-9-1 s.n. Orange Campus Johnston Ranch. Comment
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Oct 19 2015
  RSA12732  Quercus chrysolepis Carl B. Wolf, E. R. Johnson 1933-11-3 5528 Orange Main Divide Motorway on slopes of Modjeska Peak 1372 Comment
  RSA734865  Quercus chrysolepis Keith E. Hoffmaster 1931-1-1 407 Orange Santa Ana Mountains Comment
  UCSB52941  Quercus chrysolepis Roberts, Fred 1983-11-4 Orange Santa Ana Mountains; upper Trabuco Canyon, 1.2 km. NE Los Pinos Peak; 3.5 km. SSE Trabuco Peak 1320 Comment
  RSA659896  Quercus cornelius-mulleri Karl Price 1988-4-29 15 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  IRVC22515  Quercus dumosa Fred M. Roberts, Karlin G. Marsh 1983-5-26 1094 Orange Dana Point Headlands: 0.5km W Dana Point Harbor; 0.8km SSW Richard Henry Dana School Southern Coastal 82 Comment
  RSA550590  Quercus dumosa Fred M. Roberts, Marsh 1988-4-26 3952 Orange San Joaquin Hills, Pelican Hill, 0.4 km SW summit. 183 Comment
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Oct 16 2013
  SEINET12031055  Quercus dumosa S. A. Thompson, Rawlins, J. E. 1988-1 5259 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  OBI82184  Quercus suber Unknown 2012-11-18 12 -555 Orange City of Irvine, San Joaquin Wildlife Sanctuary, South Loop Trail, N of San Diego Creek, W of Campus Drive 8 Comment
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Dec 12 2019
  UC1135890  Quercus wislizeni A. Lewis Mar 1934 363 Orange Head of Silverado Canyon Cleveland National Forest, Corona Quad. 1112 Comment
  UCR158813  Quercus wislizeni A. C. Sanders, Mark A. Elvin 2005-9-2 31614 Orange Santa Ana Mtns., near head of Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks, below the towers on Santiago Peak 998 Comment
  IRVC16147  Quercus wislizeni var. frutescens R. Meinzer, T. Mulroy 1971-4-25 s.n. Orange Santa Ana Mountains: Upper Trabuco Canyon. Peninsular Ranges Comment
  RSA750068  Rafinesquia californica A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35326 Orange Weir Canyon, 0.3 mi. west of Eastern Transportation Corridor (Hwy 241) and 1.45 mi. east of south end of Walnut Canyon Reservoir 335 Comment
  RSA305  Ranunculus cymbalaria var. saximontanus J. T. Howell 1927-7-19 3769 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  IRVC1151  Raphanus sativus J. Morgan 1965-3-20 Orange 17th St. and Irvine Ave. Costa Mesa Comment
  RSA663161  Rhamnus californica R. E. Riefner 2000-8-3 20 -711 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road and Windy Ridge. 535 Comment
  CAS-BOT-BC55960  Rhamnus ilicifolia P. A. Munz; R. D. Harwood 1920-4-24 3765 Orange Santa Ana Canyon, Hillside, Sierra Canyon 365 Comment
  CAS-BOT-BC56031  Rhamnus ilicifolia P. C. Everett 1935-6-19 7242 Orange Santa Ana Mts., Trabuco Canyon, 2 mi. below (SW.) Forest Service Patrol Station 365 Comment
  POM188038  Rhamnus ilicifolia Marcus E. Jones 1931-3-23 s.n. Orange Laguna. Comment
  POM243762  Rhamnus ilicifolia Percy C. Everett 1935-6-19 7242 Orange Trabuco Canyon, 2 mi. below forest service patrol station 366 Comment
  SBBG27250  Rhamnus ilicifolia C. B. Wolf, E. R. Johnson 1933-11-3 Orange Silverado Cyn at base of Silverado Motorway 731 Comment
  UC1121846  Rhamnus ilicifolia R. St. John 1931-2-25 188 Orange Potreros Los Pinos Elsinore Quad. 762 Comment
  UC592829  Rhamnus ilicifolia Carl B. Wolf and E. R. Johnson 1933-11-3 Orange Silverado Canyon, base of Silverado Motorway Santa Ana Mts. 731 Comment
  UCR193004  Rhamnus ilicifolia A. C. Sanders, Mitch Provance 2008-5-20 35403 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  POM243761  Rhamnus tomentella subsp. cuspidata Percy C. Everett 1935-6-18 7217 Orange Santa Ana Mts: Summit of Santiago Peak. 1732 Comment
  UC1121807  Rhamnus tomentella subsp. tomentella A. Lewis May 1934 417 Orange Trabuco Canyon Cleveland National Forest, Elsinore Quad. 1371 Comment
  UC1094403  Rhaponticum repens John W. Ingram 1953-12-1 Orange 2 mi n, on State Highway 39 Huntington Beach Comment
  CAS-BOT-BC170430  Rhus Mark A. Elvin 2007-4-28 5448 Orange Irvine, UCI Arboretum, UCI North Campus near intersection of Jamboree Blvd. and Campus Dr. - Southern Coastal 15 Comment
  IRVC27932  Rhus glauca A. C. Sanders, Mark A. Elvin 2003-10-12 27327 Orange Irvine; UCI Arboretum, UCI campus near intersection of Jamboree Blvd and Campus Dr. Southern Coastal 15 Comment
  SEINET10692867  Rhus integrifolia Karen M. Meyer, Andrew Townesmith; Tracy Scott 2007-3-10 Meyer 8 Orange Cleveland National Forest, 3 mi. N. Main Divide Rd./NF3S04, off Hwy. 74. 950 Comment
  SEINET6666489 Image available Rhus integrifolia T. C. Arambula 1966-1 26 Orange Firestone Boy Scout Reservation Comment
  UCR193787  Rhus integrifolia A. C. Sanders, Fred M. Roberts 2008-7-3 35693 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Windy Ridge Rd. at hairpin turn/road junction below huge sandstone boulder (visible on Google Earth), 1.2 mi. SE of Walnut Canyon Reservoir 285 Comment
  POM9769  Rhus integrifolia P. A. Munz 1921-2-26 4684 Orange Brea Canyon.. 304 Comment
  RSA0031756  Rhus integrifolia R. F. Thorne 1977-11-21 50818 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  SEINET12235089  Rhus integrifolia Unknown 1933-1 8218 Orange Back of LaGuna Beach Comment
  IRVC27933  Rhus lancea A. C. Sanders, Mark A. Elvin 2003-10-12 27325 Orange Irvine; UCI Arboretum, UCI campus near intersection of Jamboree Blvd and Campus Dr. Southern Coastal 15 Comment
  IRVC84  Rhus ovata A. S. Boughey 128 Orange [San Juan Canyon], Ortega Hwy, 1mi E San Juan Guard Sta. Santa Ana Mountains Comment
  RSA16710  Rhus ovata C. B. Wolf 1934-9-21 6138 Orange Silverado Canyon, at base of Silverado motorway, W slope Santa Ana Mountains. 732 Comment
  RSA30326  Rhus ovata C. B. Wolf 1941-9-21 11185 Orange Silcerado Canyon 732 Comment
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Sep 20 2013
  RSA658196  Rhus ovata T. A. Daubert 1991-5-19 645 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  SEINET10494684  Rhus ovata Charlene A. Bennett 1976-7-21 Bennett 437 Orange Cultivated plants collected in and around the condominium-Pacific Island Estates in Laguna Hills; some native shrubs, etc. 152 Comment
  RSA5405  Rhus trilobata var. pilosissima B. D. Stark 1932-12-15 4448 Orange Rancho Santa Ana 144 Comment
  CAS-BOT-BC93074  Ribes californicum var. hesperium Carl B. Wolf 1931-1-30 1825 Orange Claymine Canyon, Santa Ana Mountains. 457 Comment
  RSA788180  Ribes californicum var. hesperium Doris Bowers 1971-4-19 1682 Orange Black Star Canyon Indian Site 762 Comment
  RSA0027776  Ribes californicum var. hesperium Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49693 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  CAS-BOT-BC173125  Ribes indecorum B. D. Stark 1930-2-21 1475 Orange Black Star Creek 457 Comment
  RSA608240  Ribes indecorum Steve Boyd, Bart O Brien 1998-1-13 10074 Orange Santa Ana Mountains: north end of the range, saddle between Mabey and Fremont canyons, along Main Divide Road ( 3S04) ca. 1.0 mi N of Oak Flat. 883 Comment
  SBBG28484  Ribes indecorum R. J. Weatherby 1950-2-25 1027 Orange Harding Cyn 579 Comment
  SBBG72052  Ribes malvaceum M. N. Ackley -May-1925 996 Orange Silverado Cyn 298 Comment
  RSA0021664  Ribes malvaceum Keith E. Hoffmaster 1931-1-18 518 Orange Santa Ana Mts. Comment
  RSA0021665  Ribes malvaceum Keith E. Hoffmaster 1932-4-17 517 Orange Santa Ana Mts. [Orange/Riverside Cos] Comment
  RSA1335  Ribes malvaceum var. viridifolium J. T. Howell 1929-2-11 1225 Orange Claymine Canyon, Santa Ana Mts. 305 Comment
  RSA221073  Ribes malvaceum var. viridifolium E. W. Lathrop 1966-4-6 6144 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA3132  Ribes malvaceum var. viridifolium B. D. Stark 1932-2-22 2662 Orange Canyon W of Roundtop, Rancho Santa Ana. 457 Comment
  SBBG128689  Ribes malvaceum var. viridifolium R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49706 Orange Sierra Peak; Santa Ana Mtns 900 Comment
  RSA0018259  Ribes roezlii Carl B. Wolf 1933-8-24 5395 Orange Summit of Santiago Peak, Santa Ana Mountains. 1707 Comment
  UC484244  Ribes speciosum C. B. Wolf 1931-3-6 1863 Orange 1 mi n Harding Canyon; Santa Ana Mts. 304 Comment
  UCR149497  Ribes speciosum Scott D. White, Michael Honer 2004-5-17 10384 Orange South Coast, City of Laguna Niguel. Ridges and open slopes directly N of the intersection of Crown Valley Parkway and Pacific Island Dr 183 Comment
  UCR151029  Ribes speciosum Scott D. White 1997-5-6 5038 Orange Peninsular Ranges; Santa Ana Mtns., Lomas de Santiago; Santiago Canyon area; unnamed tributary to Santiago Creek flowing from the SW, directly west of Pancho Canyon 396 Comment
  POM2748  Ricinus communis M. Harbour 1915-3-28 s.n Orange Orange. Comment
  RSA658639  Ricinus communis E. Jordan 1969-5-15 32 -1 Orange Waste area, at intersection of Valley View & Avolenia Drs. Fullerton. Comment
  JEPS51543  Romneya coulteri Alice King Jun 1908 Orange near Santa Ana (in hills) Comment
  UC1618114  Romneya coulteri Donald G. Nelson 1936-6-5 435 Orange Hills NE of Fullerton 91 Comment
  UCD96083  Romneya coulteri H. M. Hall 1913-5-28 9401 Orange Santiago Canon. 182 Comment
  UCR113451  Romneya coulteri R. E. Riefner Jr. 2000-7-6 20- 615 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along powerline SE of upper Fremont Canyon 607 Comment
  UCR150611  Romneya coulteri Scott D. White 1997-5-6 5035 Orange Peninsular Ranges; Santa Ana Mountains, Lomas de Santiago; Santiago Canyon, c. 1.5 mi N of Modjeska Canyon 366 Comment
  UCR16445  Romneya coulteri K. T. Ingram 1976-5-2 s.n. Orange Peninsular Range; Santa Ana Mtns., Ortega Highway, Route 74, 12 mi. east of Hwy 405 Comment
  SEINET7881036 Image available Romneya coulteri F. R. Fosberg 1931-1 S 5094 Orange Lower Santiago Comment
  CAS-BOT-BC74420  Rorippa curvisiliqua Le Roy Abrams 1901-6-1 1768 Orange Laguna. Comment
  RSA304832  Rosa californica James R. Shevock 1970-4-25 157 Orange Santa Ana Mts. 168 Comment
  RSA734658  Rosa californica A. C. Sanders, Fred M. Roberts, A. O'Neal, D. E. Bramlet 2008-5-9 35294 Orange Weir Canyon, c. 1.1 mi. E of Walnut Cyn Reservoir. 277 Comment
  POM2667  Rubus ursinus Philip A. Munz 1918-5-4 2219 Orange Laguna Beach. Comment
  RSA797907  Rubus ursinus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49817 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  UCR193809  Rubus ursinus A. C. Sanders, Fred M. Roberts 2008-7-16 35833 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, canyon c. 0.12 mi. below Dripping Spring, c. 7.5 mi. ESE of Tustin 360 Comment
  UCR193497  Rumex conglomeratus A. C. Sanders, T. B. Salvato 2008-5-13 35362 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  RSA5814  Rumex conglomeratus Carl B. Wolf 1932-6-28 3806 Orange Bryant Ranch: Edge of field on Bixby Ave. 9 Comment
  CAS-BOT-BC421599  Rumex crispus C. L. Hitchcock; C. V. Muhlick 1964-3-17 23072 Orange 8 miles e. of Yorba Linda, Santa Ana Canyon Comment
  RSA698483  Rumex hymenosepalus R. H. McArthur 1934-3-17 s.n. Orange Gypsum Canyon. Comment
Read comments
Dec 6 2008
  UCR158464  Rumex maritimus Adrian Wolf 1998-5-27 334 Orange South Coast, Newport Slough, south of oil fields, between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 2 Comment
  POM47585  Rumex maritimus I. M. Johnston 1924-8-29 s.n. Orange 3 miles north of Balboa. Comment
  RSA65365  Rumex salicifolius J. T. Howell 1927-7-5 7689 Orange Rancho Santa Ana, Santa Ana River Canyon. Comment
  RSA734984  Rumex salicifolius A. C. Sanders, T. B. Salvato 2008-5-13 35386 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  UCR107843  Rumex salicifolius Scott D. White 1998-3-24 6231 Orange Irvine. Univ. of Calif. Irvine Campus: Site of proposed Research Park. SW of main campus circle, c. halfway between Berkeley Av. and new freeway (Bonita Cyn) 37 Comment
  UC2048893  Rumohra adiantiformis R. E. Riefner Jr. 2016-10-27 16 -402 Orange City of Laguna Beach, Crescent Bay Drive, W of Circle Way. Comment
  RSA689541  Salicornia bigelovii R. E. Riefner 2003-8-17 3 -335 Orange Costa Mesa, marsh along Santa Ana River, west of Talbert Regional Park. 11 Comment
  RSA0059640  Salicornia pacifica L. C. Wheeler 1933-10-21 2222 Orange Newport Bay. 3 Comment
  RSA678746  Salicornia virginica Valerie Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary D. Wallace 2001-4-4 1101 Orange Seal Beach National Wildlife Refuge: Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  UC1136468  Salicornia virginica A. Lewis Apr 1934 388 Orange Celery Corona Quad. 0 Comment
  UC466068  Salicornia virginica D. L. Crawford 739 Orange Laguna Beach Region Comment
  UCR158157  Salicornia virginica Adrian Wolf 1998-5-27 341 Orange South Coast, Newport Slough, south of oil fields, between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 2 Comment
  RSA698842  Salix argophylla Unspecified s.n. Orange Arch beach Comment
  CAS-BOT-BC129737  Salix bonplandiana Carl B. Wolf 1932-4-8 2949 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon. 120 Comment
  RSA4247  Salix exigua Carl B. Wolf 1932-4-15 2953 Orange Rancho Santa Ana, near Santa Ana River and south of pear orchard, Santa Ana Canyon. 122 Comment
  RSA5307  Salix exigua B. D. Stark 1933-1-7 4510 Orange Rancho Santa Ana, river bottom below ranch houses. 122 Comment
  RSA542353  Salix exigua Fred M. Roberts Jr., Gordon Marsh 1987-8-31 3602 Orange Santa Ana River: adjacent to Santa Ana, 0.5 km NE 17th St. bridge. 27 Comment
  RSA6452  Salix exigua Carl B. Wolf 1932-4-15 2954 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon. 120 Comment
  SBBG58924  Salix exigua var. hindsiana C. B. Wolf 1932-4-15 2954 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Cyn 120 Comment
  UC472126  Salix exigua var. hindsiana I. J. Condit 1908-7-20 Orange Los Alamitos Comment
  CAS-BOT-BC108132  Salix gooddingii Carl B. Wolf 1932-4-15 2955 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon 120 Comment
  RSA0093589  Salix gooddingii Fred M. Roberts 2014-4-21 7855 Orange South Coast. SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin. 113 Comment
  RSA138  Salix gooddingii J. T. Howell 1927-6-6 40 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  RSA366296  Salix gooddingii Fred M. Roberts Jr. 1985-6-12 1906 Orange Irvine: W.R. Mason Regional Park, Culver, 0.2km S University Dr.; 1.7km NE UC Irvine. 17 Comment
  RSA528052  Salix gooddingii A. C. Sanders 1990-10-6 10184 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Highway 1. 1 Comment
  RSA603346  Salix gooddingii Scott D. White, B. Leatherman 1997-6-12 5324 Orange East of San Juan Capistrano: San Juan Creek beteen Highway 74 bridge and Mission Vieja site, i.e. ca. 2 - 4 miles E of I-15 [Interstate 5] / Highway 74 junction. 46 Comment
  RSA748273  Salix gooddingii A. C. Sanders, Fred M. Roberts 2008-6-17 35515 Orange middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  UCR261703  Salix gooddingii Dick Newell, Don Millar 2015-3-31 398 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, on Limestone Canyon Rd., 0.3 mi. SW of junction of Santiago Cyn. Rd. and Silverado Cyn. Rd. 311 Comment
  LA208695  Salix laevigata Carl Hedin; Joseph Ewan 1932-7-9 7681 Orange Santa Ana River 8 km below Prado (Rincon) [Area 7] Comment
  RSA5369  Salix laevigata B. D. Stark 1933-1-7 4511 Orange Rancho Santa Ana, river bottom below ranch houses. 122 Comment
  UC537282  Salix laevigata Philip A. Munz and L. M. Booth 1932-12-16 1380 Orange 1/2 mi from ocean Santa Ana R. (w of Wolfe's Ranch) Comment
  UCR193034  Salix laevigata A. C. Sanders, Mitch Provance 2008-5-20 35425 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  UCR239909  Salix laevigata O. F. Clarke 2004-3-22 s.n. Orange Santa Ana River Canyon, Santa Ana River on the west side of Featherly Park 110 Comment
  UCSB57547  Salix laevigata Roberts, Fred 1984-4-18 Orange Wagon Wheel Regional Park: 3.0km NNE Median Survey Mark; 2.1km NW Bench Mark 422 190 Comment
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Oct 28 2018
  CAS-BOT-BC106967  Salix lasiolepis Scott D. White 1997-3-26 4817 Orange Univ. of Calif. Irvine Campus: Site of proposed student recreation center, east of main campus. Existing Farm School and adjacent grasslands (horse pasture) between California Ave. and Culver Dr. 30 Comment
  LA210190  Salix lasiolepis Lawrence M. Booth; 1932-12-31 1384 Orange Newport Bay Comment
  POM177837  Salix lasiolepis Marcus E. Jones 1930-1-26 25528 Orange Wildwood Camp, Santa Ana River. Comment
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Nov 18 2013
  RSA221065  Salix lasiolepis E. W. Lathrop 1966-4-6 6137 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA700178  Salix lasiolepis R. H. McArthur 1934-3-1 s.n. Orange Santa Ana River at 1st Street. Comment
  UCR26632  Salix lasiolepis E. W. Lathrop 1966-4-6 6137 Orange Santa Ana Mtns., 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest 396 Comment
  UCR26634  Salix lasiolepis E. W. Lathrop 1966-3-23 6101 Orange Santa Ana Mtns, Cleveland National Forest, Trabuco District. 4 mi. NE of Lake Irvine, Black Star Canyon Comment
  CAS-BOT-BC128462  Salix lasiolepis var. lasiolepis Carl B. Wolf 1932-2-15 2655 Orange Rancho Santa Ana Botanic Garden, north of administration building. 182 Comment
  CAS-BOT-BC126302  Salix sessilifolia John Thomas Howell 1927-6-6 2440 Orange Santa Ana River bottom, Santa Ana [Canon] Canyon 152 Comment
  CDA5811  Salpichroa origanifolia Margaret Bellue Oct 1944 Orange Yorba Linda. 0 Comment
  CAS-BOT-BC403758  Salpichroa origanifolia E. L. Paddock 1943-5-28 12744 Orange Little Tia Juana Campsite, sunny hills Ranch, Fullerton Comment
  UCR239631  Salsola australis Fred M. Roberts 2012-4-24 7513 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  UCR258620  Salsola australis Fred M. Roberts 2014-7-25 7889 Orange South Coast, SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin 113 Comment
  POM201685  Salvia apiana L. M. Booth 820 Orange Santa Ana Canyon Comment
  RSA5384  Salvia apiana B. D. Stark 1932-12-30 1705 Orange Rancho Santa Ana, 1/4 mile W of Roundtop. 457 Comment
  RSA542479  Salvia apiana Fred M. Roberts 1988-5-13 3972 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Canyon near spring, 2.3 km NW Bolero Lookout. 439 Comment
  RSA650627  Salvia apiana Daniel Truong 1991-5-13 28 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  UC1124655  Salvia apiana A. Lewis 1934-5-1 434 Orange Los Pinos Peak; Cleveland National Forest, Elsinore Quad. 1036 Comment
  UCR131891  Salvia apiana J. Mallory, V. McCoy 1995-7-3 6454- 67 Orange Santa Ana Mountains: N-facing slope in Santiago Canyon, c. 0.5 mi. east of Santiago Canyon Rd; near Irvine Park 200 Comment
  JEPS62669  Salvia columbariae Alice King 1908-4-19 Orange Santa Ana Mts. Comment
  RSA550594  Salvia leucophylla Fred M. Roberts 1989-4-26 4320 Orange Santa Ana Mtns.: Lower Blind Canyon near mouth, 9.2km SW Sierra Peak, 1.0km N Irvine Lake spillway. 213 Comment
  JEPS62752  Salvia mellifera Alice King Apr 1908 Orange Santiago Creek; Santa Ana Mts. Comment
  UCD125591  Salvia mellifera P. B. Kennedy 1925-1-12 7 Orange Irvine Ranch. Comment
  UCLA69968  Salvia mellifera Martha Hilend Apr 1921 45 Orange Fullerton, Little Bear Lake; Orange County Park Comment
  UCR106308  Salvia mellifera B. G. Pitzer, M. Georgiady 1997-4-5 3098 Orange San Joaquin Hills, Crystal Cove State Park, portion across highway on the beach, bluffs immediately above beach and adjacent terraces for southeast end of park. 24 Comment
  UCR131892  Salvia mellifera J. Mallory, V. McCoy 1995-7-3 6454- 127 Orange Santa Ana Mountains: Blind Canyon, c. 0.5 mi. NE of confluence w/ Santiago Canyon Wash; north of Irvine Lake. 300 Comment
  UCR99553  Salvia mellifera B. G. Pitzer 1996-4-30 2798 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  IRVC9374  Sambucus mexicana R. Yarnell 1966-4-29 146 Orange Carbon Canyon near La Vida Mineral Springs. Chino Hills Comment
  UCR106271  Sambucus mexicana B. G. Pitzer, M. Georgiady 1997-4-5 3094 Orange San Joaquin Hills, Crystal Cove State Park, portion across highway on the beach, bluffs immediately above beach and adjacent terraces for southeast end of park. 24 Comment
  UCR193789  Sambucus mexicana A. C. Sanders, Fred M. Roberts 2008-7-3 35691 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Windy Ridge Rd. at hairpin turn/road junction below huge sandstone boulder (visible on Google Earth), 1.2 mi. SE of Walnut Canyon Reservoir 285 Comment
  CAS-BOT-BC238825  Sambucus nigra subsp. caerulea C. B. Wolf 1931-7-24 2292 Orange Ravine at Olinda, lower end of Carbon Canyon 152 Comment
  UCR241900  Sambucus nigra subsp. caerulea Fred M. Roberts 2012-4-24 7519 Orange Peninsular Ranges; Coastal Foothills, San Joaquin Hills, Buck Gully, tributary canyon below San Joaquin Hills Road and 2.0 km W Signal Peak 167 Comment
  UCSB69268  Sambucus nigra subsp. caerulea Sanders, A.; Roberts, Fred 2008-7-3 Orange Peninsular Range; Santa Ana Mtns. Weir Canyon, along Windy Ridge Rd. at hairpin turn/road junction below huge sandstone boulder (visible on Google Earth), 1.2 mi. SE of Walnut Canyon Reservoir (Black Star Canyon 7.5 ' Q.) 285 Comment
  RSA0127339  Sanicula arguta Fred M. Roberts 2016-3-17 8021 Orange San Joaquin Hills: City of Irvine, Ridge between Coyote Canyon and Bommer Canyon along Turtle Ridge Trail, 0.6 km NNE Signal Peak and 1.1 km SW Cattle Camp. 314 Comment
  RSA761933  Sanicula arguta Robt. Allen 2005-4-30 12506 Orange Caspers Wilderness Park, East Ridge Trail. 175 Comment
  RSA48923  Sanicula crassicaulis P. A. Munz 1949-5-26 13380 Orange Head of Sierra [Freemont] Canyon, Santa Ana Mountains. 732 Comment
  POM9089  Sanicula crassicaulis P. A. Munz, R. D. Harwood 1920-4-24 3762 Orange Santa Ana Mountains, Sierra [Freemont] Canyon 366 Comment
  RSA606429  Sanicula crassicaulis Jon E. Keeley 1994-4-5 25279 Orange First year burn, east end of Caspers Park S-7 (Keeley 1994) 215 m. 215 Comment
  SD173117  Satureja chandleri Juergen Schrenk 2004-5-6 N 3 Orange Santa Ana Mountains, San Juan Trail Comment
  RSA731997  Schismus barbatus A. C. Sanders, Linda Farley, F. M. Roberts, D. E. Bramlet 2008-4-1 34647 Orange Peninsular Range: Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 250 Comment
  UCR192493  Schismus barbatus A. C. Sanders, Fred M. Roberts 2008-3-25 34561 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA797601  Schoenoplectus Robert F. Thorne 1977-11-21 49998 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  RSA0070787  Schoenoplectus acutus CNPS Accuracy Assessment Team 2014-4-30 9268 Orange Peters Canyon Regional Park. Comment
  JEPS83156  Schoenoplectus californicus L. M. Booth 1932-6-9 1176 Orange Coastal Santa Ana River Comment
  RSA234495  Schoenoplectus californicus James Henrickson 1970-9-5 5330 Orange 3 miles NE of Huntinton Beach just N of Bolsa Chica Salt Marsh. Sea level. 0 Comment
  RSA793256  Schoenoplectus californicus Robert F. Thorne 1984-1 s.n. Orange Newport Back Bay Comment
  RSA5934  Schoenoplectus californicus Carl B. Wolf 1932-7-7 3862 Orange Opposite the Bryant Ranch: on N side of Bryant Avenue, 0.5 mile east of Los Alamitos Boulevard near Los Alamitos. 8 Comment
  POM1400  Schoenoplectus maritimus Phillip A. Munz 1918-5-4 2226 Orange Laguna Canyon. Comment
  IRVC29727  Scirpus americanus Mark A. Elvin, Barry S. Nerhus 2006-11-4 5258 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  SD253872  Scirpus microcarpus Jim Riley 2013-10-15 117 Orange San Clemente area; 0.56 miles ESE intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 68 Comment
  UCR231159  Scrophularia californica Dick Newell, Don Millar, Shara Harris 2011-6-21 190 Orange Peninsular Range; Santa Ana Mtns., mouth of Fremont Canyon near Irvine Lake dam spillway 231 Comment
  POM4221  Scrophularia californica subsp. floribunda Philip A. Munz 1918-5-4 2199 Orange Laguna Canyon. Comment
  UC1011912  Scrophularia californica subsp. floribunda F. W. Pennell and E. M. Harvey 1949-6-29 26811 Orange above San Juan Capistrano (pass at summit of Ortega Hwy) 792 Comment
  UCR209339  Scrophularia californica subsp. floribunda Fred M. Roberts 2008-4-22 6919 Orange Lomas de Santiago, Loma Ridge, Lower Hicks Canyon, along Haul Road near asphalt plant, 2.2 km east-northeast of Rattlesnake Reservoir Dam and 2.2 km west-northwest of Bee Peak, Irvine Ranch Conservancy 188 Comment
  SEINET12347787  Scrophulariaceae S. A. Thompson, Rawlins, J. E. 1988-8-27 5262 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  RSA723967  Secale cereale R. E. Riefner 2004-5-1 04 -154 Orange City of Irvine; Jeffrey Rd. near Bryan Rd. 73 Comment
  IRVC3587  Selaginella bigelovii A. S. Boughey 143 Orange [San Juan Canyon], Ortega Hwy, 1mi E San Juan Guard Sta. Santa Ana Mountains Comment
  RSA700251  Selaginella cinerascens Fred M. Roberts 2003-5-1 5675 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, Cristianitos Cyn., 0.5km SSW Gato Gate and 0.1km west of Cristianitos Rd. 99 Comment
  RSA450849  Senecio aphanactis Karlin G. Marsh 1978-3-16 s.n. Orange UCI Ecological Preserve: Hill #1 52 Comment
  RSA0012667  Senecio californicus R. E. Riefner Jr. 2000-6-26 20 -583 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Canyon Road. 305 Comment
  RSA749849  Senecio californicus D. Bramlet, Jim Harrison 2008-4-3 4148 Orange South Bee Canyon, Bowerman landfill site. 1.2 km S of the Bee Cyn. access road, and 122 m W of the active landfill. Comment
  CAS-BOT-BC333069  Senecio flaccidus var. douglasii John Thomas Howell 1927-6-6 2442 Orange Santa Ana River bottom, Santa Ana Canyon 152 Comment
  CDA25870  Senecio linearifolius Mark A. Elvin 2003-8-24 3011 Orange Southern Coastal; San Joaquin Hills, Irvine, UCI, 100 m N of the intersection of Shady Canyon Drive and Bonita Canyon Road Comment
  RSA641384  Senecio linearifolius Scott D. White 1998-6-26 6783 Orange South Coast: Univ. of Calif. Irvine Campus. Along mapped intermittent blueline stream just N of Bonita Cyn Dr. 61 Comment
  UCR204762  Senecio linearifolius var. linearifolius Scott D. White 2003-7-7 9613 Orange Coastal Plain, Irvine, UC Irvine Campus. Directly west of T-intersection of Shady Canyon Creek with Bonita Canyon Dr. (= Culver Drive) 70 Comment
  RSA450861  Senecio mikanioides Gordon Marsh, K. G. Marsh 1978-1-29 s.n. Orange Santa Ana Mountains, Lower Ladd Canyon, reach between west and east forks Comment
  RSA0127340  Senecio vulgaris Fred M. Roberts 2016-3-17 8022 Orange San Joaquin Hills: City of Irvine, Ridge between Coyote Canyon and Bommer Canyon along Turtle Ridge Trail, 0.6 km NNE Signal Peak and 1.1 km SW Cattle Camp. 314 Comment
  RSA734612  Senecio vulgaris Keith E. Hoffmaster 328 Orange Santa Ana Comment
  RSA0069225  Senna marilandica Fred M. Roberts, Sandra Leatherman 2008-9-3 7080 Orange Yorba Linda: Santa Ana River Canyon, Santa Ana River, 0.6 km W Gypsum Cyn. bridge, south of La Palma Ave. 113 Comment
  CHSC26088  Sesuvium verrucosum Roger Shelby 1970-8-22 Orange Ca. 4 miles North of Huntington Beach, 1 1/2 miles So. of Warner Ave. on Pacific Coast Hwy. in Bolsa Bay area. 0 Comment
  IRVC25222  Sesuvium verrucosum Fred M. Roberts 1986-11-4 3213 Orange Anaheim Bay, north of Hog Island, Seal Beach Naval Weapons Station 0 Comment
  RSA234483  Sesuvium verrucosum James Henrickson 1970-7-24 5004 Orange 3 miles NW of Huntington Beach on sandy ''Rabbit'' Island in Bolsa Chica Salt March near Inner Bolsa Bay. 1 Comment
  RSA724100  Setaria adhaerens R. E. Riefner 2004-8-8 4 373 a Orange City of Anaheim, Santa River bottom near 57-Freeway between Orangewood St. and Chapman Ave. 41 Comment
  IRVC21695  Setaria lutescens Fred M. Roberts 1984-8-6 1366 Orange UC Irvine, along Adobe Circle Road, 0.9km ENE campus center; 2.3km W French Hill, Irvine 30 Comment
  CAS-BOT-BC243590  Setaria parviflora Ira L. Wiggins 1965-9-26 20260 Orange Roadside at west end of Orangethorpe Estates subdivision near Atwood. Comment
  RSA734613  Setaria parviflora Keith E. Hoffmaster 1933-10-29 496 Orange Near Tustin Comment
  SEINET6947338  Sidalcea sparsifolia W. P. Vestal, A. G. Vestal 1955-3-24 3453 Orange Trabuco Canyon, 5 miles east of El Toro. Comment
  CAS-BOT-BC434368  Sidotheca trilobata P. C. Everett 1935-6-19 7224 Orange Santa Ana Mts., main divide motorway 1 5/10 mi. below summit of Santiago Peak, E. slope 1310 Comment
  RSA749489  Silene antirrhina Fred M. Roberts, Linda Farley 2008-3-28 6823 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork along ridge just west of SR241, 3.4 km E Robber s Peak, Irvine Land Conservancy. 457 Comment
  UCR191021  Silene antirrhina A. C. Sanders, Fred M. Roberts 2008-4-22 35011 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  JEPS50934  Silene gallica Alice King March 1908 Orange Santa Ana Comment
  UCR191436  Silene gallica A. C. Sanders, Fred M. Roberts 2008-4-8 34730 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  CAS-BOT-BC386896  Silene gallica Ira L. Wiggins 1966-3-19 20536 Orange on Irvine Ranch, southeast of U.C. Irivine. Comment
  CAS-BOT-BC386897  Silene gallica Ira L. Wiggins 1966-4-30 20573 Orange field along south side of Brea Olinda Boulevard, near Carolina Avenue. Comment
  RSA797291  Silene gallica D. M. McF 1953-4-3 s.n. Orange Irvine Coast G.C. Corona Del Mar. Comment
  CAS-BOT-BC174885  Silene laciniata Munz; Street; Williams 1919-5-3 2671 Orange Santa Ana River [Canon] Canyon Comment
  RSA0013912  Silene laciniata Fred M. Roberts 2012-5-10 7584 Orange San Joaquin Hills: Buck Gully, south fork, north slope of Pelican Hill, along Pelican Hills Dr., 0.3 km N summit Pelican Hill. 189 Comment
  RSA438888  Silene laciniata subsp. major M. B. Dunkle 1933-5-30 3375 Orange Santa Ana Canyon. Comment
  RSA581444  Silene laciniata subsp. major Fred M. Roberts 1989-5-12 4363 Orange Santa Ana Mountains: Santiago Canyon, Flemming Regional Park, just E of Modjeska at end of paved road, ca. 3.2 kilometers WSW Laurel Springs. 455 Comment
  SD127342  Silene laciniata subsp. major Reid Moran, Gordon Marsh and Jack Reveal 1977-6-13 24233 Orange Willow Canyon, tributary of Laguna Canyon 124 Comment
  RSA659992  Silene laciniata subsp. major Steve Teh 1994-5-20 27 Orange Modjeska Grade rd. 1/2 mile on trail above fire road. Comment
  CAS-BOT-BC75289  Sisymbrium officinale Lawrence M. Booth 1932-1-1 1198 Orange Newport Bay. Comment
  RSA704929  Sisymbrium officinale Fred M. Roberts, David E. Bramlet 2004-4-21 6042 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, Flagpole Meadow in upper Shady Canyon, 1.63 km NW Sycamore Gate, 1.18 km W of Cristianitos Road. 168 Comment
  RSA697825  Sisyrinchium bellum Anonymous s.n. Orange Near Orange Co. Park. 793 Comment
  UCR151027  Sisyrinchium bellum Scott D. White 1997-5-6 5039 Orange Peninsular Ranges; Santa Ana Mtns., Lomas de Santiago; Santiago Canyon area; unnamed tributary to Santiago Creek flowing from the SW, directly west of Pancho Canyon 396 Comment
  UCR192074  Sisyrinchium bellum A. C. Sanders, Fred M. Roberts 2008-5-6 35250 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  POM201716  Solanum americanum L. M. Booth 1932-6-28 1213 Orange Bolsas Marsh. Comment
  RSA743381  Solanum americanum Fred M. Roberts 2008-5-27 7000 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  HSC21299  Solanum douglasii J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  RSA263702  Solanum douglasii E. W. Lathrop 1974-6-27 7414 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA650636  Solanum douglasii Daniel Truong 1991-5-13 29 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  RSA743382  Solanum douglasii Fred M. Roberts 2008-5-27 7001 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  RSA752811  Solanum douglasii A. C. Sanders, Fred M. Roberts 2008-8-7 36003 Orange Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  UC1125197  Solanum douglasii H. E. Norton 1931-3-6 35 Orange Baker Canyon 609 Comment
  UC494729  Solanum douglasii Philip A. Munz 1932-3-29 12190 Orange Costa Mesa Comment
  UCR173402  Solanum douglasii Abby Sirulnik 2000-4-11 61 Orange South Coast, Crystal Cove State Park, near Los Trancos Canyon and Pelican Hill 152 Comment
  UCR207564  Solanum douglasii O. F. Clarke 2004-3-22 s.n. Orange Santa Ana River Canyon, Santa Ana River on the west side of Featherly Park 110 Comment
  RSA0020074  Solanum douglasii Stephen Bruff s.n. Orange Lemon Heights. Comment
  RSA0020075  Solanum douglasii Kenneth Beard s.n. Orange Santa Ana riverbank Comment
  UCSB48090  Solanum douglasii Roberts, Fred 1981-5-2 Orange Mission Viejo: Camino Capistrano, 1.7km N Crown Valley Parkway 49 Comment
  UCR228772  Solanum elaeagnifolium Dick Newell, Don Millar 2011-7-19 203 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon Rd. east of Augustine Staging Area 282 Comment
  SD43527  Solanum rostratum E. Johnson 1946-8-22 11531 Orange sandy river bottom, Rancho Santa Ana, Santa Ana Canyon 399 Comment
  UCR191429  Solanum umbelliferum A. C. Sanders, Fred M. Roberts 2008-4-8 34780 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon 495 Comment
  UCR4097  Solanum xanti Carole Sims 1965-3-28 s.n. Orange South Coastal Plains, 150 yards toward beach on Salt Creek Road off Pacific Coast Hwy between South Laguna and Dana Point 12 Comment
  UCR241050  Soleirolia soleirolii Robert DeRuff 2012-9-27 554 B Orange South Coast, Upper Newport Bay, adjacent to Back Bay Dr. just past Newporter Canyon 3 Comment
  RSA473634  Solidago californica M. B. Dunkle 1934-6-18 3967 Orange Upper San Juan Canyon 610 Comment
  RSA752812  Solidago californica A. C. Sanders, Fred M. Roberts 2008-8-7 35998 Orange middle section of Weir Canyon, 1.15 mi. (air) SSE of Walnut Canyon Reservoir 225 Comment
  UCR193846  Solidago californica A. C. Sanders, Fred M. Roberts 2008-7-16 35853 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  POM201732  Solidago confinis L. M. Booth 1932-12-26 1383 Orange Newport Lagoon. Comment
  CAS-BOT-BC374660  Sonchus oleraceus Ira L. Wiggins 1965-11-3 20314 Orange Orange grove just east of California State College campus, Fullerton Comment
  RSA653178  Sonchus oleraceus David Barrios 1991-5-8 29 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 365 Comment
  CAS-BOT-BC374658  Sonchus oleraceus Ira L. Wiggins 1966-2-1 20406 Orange Orange grove just east of Letters & Science building, California State College at Fullerton Comment
  RSA658626  Sonchus oleraceus John L. Stevens 1969-5-5 39 Orange On CSF campus, in flower bed. 158 Comment
  RSA719412  Sorghum bicolor Fred M. Roberts, Robert L. Allen 2006-10-8 6433 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  CAS-BOT-BC235343  Sorghum halepense Le Roy Abrams 1901-6-12 1765 Orange Santa Ana Comment
  RSA700185  Sorghum halepense Jeanne Paxton 1934-5-1 s.n. Orange Lemon Heights Comment
  RSA699061  Sparganium eurycarpum Minor Warne 1934-5-17 s.n. Orange Greenville Drainage. Comment
  IRVC29761  Spartina foliosa Barry S. Nerhus, Mark A. Elvin 2006-11-4 14 Orange Huntington Beach, Bolsa Chica Wetlands, SW portion of Reserve beside Pacific Coast Highway. Southern Coastal 0 Comment
  RSA483172  Spartina foliosa F. R. Fosberg 1930-7-10 S 3193 Orange Anaheim Landing. [Los Angeles Co. on label] Comment
  IRVC19910  Spergula arvensis Karlin G. Marsh 1983-6-25 Orange Coyote Canyon, south branch of Coyote Canyon dump. San Joaquin Hills Comment
  CAS-BOT-BC389926  Spergula arvensis Ira L. Wiggins 1966-3-5 20515 Orange Field about 1/2 mi. W. of El Toro Post Office, along Highway S-18 Comment
  UCR181661  Spergularia B. G. Pitzer 1996-4-30 2784 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  RSA0097854  Spergularia bocconi Steve Boyd, Timothy S. Ross 1992-5-19 7431 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail in Aliso Canyon. 335 Comment
  RSA0097855  Spergularia bocconi L. M. Booth 1932-5-24 1095 Orange Newport Bay, Public Golf Course. Comment
  SEINET3155830  Spergularia macrotheca L. Abrams 1903-4-17 3258 Orange between Tustin and Myford Comment
  RSA0097838  Spergularia macrotheca F. W. Peirson 1923-3-26 4289 Orange Canada Salada. 0 Comment
  UCR180006  Spergularia villosa Scott D. White 1998-4-9 6264 Orange UC Irvine Campus: Site of proposed Research Park. SW of main campus circle, c. halfway between Berkeley Ave. and the new Fwy (Bonita Canyon) 37 Comment
  RSA74867  Spergularia villosa Elroy Robinson 1936-6-26 s.n. Orange El Torro, dry hard soil along Santa Fe Railway Comment
  UCD116727  Sphaeralcea emoryi var. emoryi Ronni Stachelek; Bob Anderson, Frances Schroshire 1995-3-1 40 Orange Upper Newport Bay on Back Bay Dr. approx. 1/2 mi. N. of Shellmaker Island. Comment
  CAS-BOT-BC236655  Sporobolus airoides L. R. Abrams 1901-6-1 1755 Orange Wilmington Comment
  RSA5953  Sporobolus airoides C. B. Wolf 1932-7-7 3848 Orange Bixby Ave., 0.7 mile W of Hansen road (0.2 mile W of SE corner of NE/4 of NW/4) T4S R11W S34 8 Comment
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Apr 10 2014
  CDA20477  Sporobolus indicus M. Sulsona 2004-5-19 PDR 1256361 Orange Southwestern California; Woodbury School in Garden Grove. 0 Comment
  UCR274181  Stachys Dick Newell, Peter Wetzel 2016-6-7 429 Orange Peninsular Range; Santa Ana Mtns., Silverado Canyon, 0.1 mile NE of Blackstar Canyon Rd. intersection, near Silverado Creek 297 Comment
  JEPS62961  Stachys ajugoides L. M. Booth 1932-5-19 Orange Newport Bay Comment
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Oct 19 2017
  SBBG105052  Stachys rigida S. Boyd, D. Banks 1994-4-5 8276 Orange ridgeline between Lucas and Verdugo Cyns W of Verdugo Potrero, near transit point "Lucas" 426 Comment
  RSA798185  Stachys rigida subsp. quercetorum Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49583 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  CAS-BOT-BC393826  Stellaria media C. B. Wolf 1931-3-6 1854 Orange Trabuco Camp Ground, Trabuco Canyon, west slope of the Santa Ana Mts. 609 Comment
  IRVC371  Stellaria media A. S. Boughey 1965-3-16 74 Orange Silverado Canyon. Santa Ana Mountains Comment
  RSA683237  Stenotaphrum secundatum Scott D. White, Matt Carlton 2003-11-20 9867 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (San Juan Capistrano). 24 Comment
  UCD86398  Stenotaphrum secundatum A. C. Sanders 1990-10-6 10191 Orange Newport Bay, North Star County Beach area on the southwest end of the bay, ca. 2 km inland of Hwy. 1. 1 Comment
  UCR247541  Stephanomeria cichoriacea Dick Newell, Judy Booth 2013-8-25 338 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Maple Springs Rd., 2.1 air miles due east of lower Maple Springs gate 832 Comment
  CAS-BOT-BC375194  Stephanomeria diegensis T. B. Salvato 2010-10-27 5129 Orange South Coast: Dana Point Headlands, Hilltop Park, north of Scenic Dr. and west of Green Lantern St., overlooking Dana Point Harbor 84 Comment
  RSA0044742  Stephanomeria diegensis Fred M. Roberts, Art Davenport 2003-9-11 6010 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy. Cristianitos Cyn., 0.79 km N Sycamore Gate 0.23 km w of Crisianitos Road. 126 Comment
  RSA184185  Stephanomeria diegensis I. L. Wiggins 1965-11-6 20340 Orange Near well #14, Kramer Oil Estates, near end of county road to Rancho Santa Ana. Comment
  RSA712943  Stephanomeria virgata subsp. virgata Fred M. Roberts, Robert L. Allen 2005-10-15 6308 Orange Upper Long Canyon along Main Divide Road, 3.1km E Los Pinos Peak and 0.3km N Old Dominion Mine. 981 Comment
  UCR177439  Stipa cernua Scott D. White, Amanda Duchardt 2003-3-27 8864 Orange Peninsular Ranges/Santa Ana Mtns, Canyon bottom and W-facing slopes above Canada Gobernadora 183 Comment
  UCR37802  Stipa lepida Steve Boyd 1981-5-13 s.n. Orange South Coast, Pelican Hill, Irvine Ranch Property, San Joaquin Hills south of Corona del Mar 218 Comment
  SD245221  Stipa miliacea R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49569 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Along San Juan Creek. Comment
  RSA6315  Stuckenia pectinata L. T. Street, Williams 1919-5-4 2690 Orange Laguna Lakes. [now Big Laguna Lake, San Diego Co.] Comment
  UCSB52865  Stylocline gnaphaloides Roberts, Jr., Fred 1982-4-3 Orange Dana Point Headlands; north of Dana Strand Rd., 0.5 km. W Dana Point Harbor; 0.8 km. SSW Richard Henry Dana School 80 Comment
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Dec 12 2018
  CAS-BOT-BC422882  Stylomecon heterophylla P. A. Munz 1918-5-4 2171 Orange Laguna Beach Region. Laguna Canon [Canyon] Comment
  UCR263576  Styrax officinalis var. redivivus Ed Kentner 2012-5-17 138 Orange Santa Ana Mountains, Irvine Ranch Conservancy, Fremont Canyon Reserve near Cathedral Rock and Lakeview Road 730 Comment
  CAS-BOT-BC402192  Styrax redivivus R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49686 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA124719  Styrax redivivus E. K. Balls, Percy C. Everett 1957-11-25 3250 Orange Upper Trabuco Canyon, 2.2 mi. ne. from entrance to Holy Jim Canyon, 991 Comment
  RSA514322  Styrax redivivus Reid Moran, Daniel I. Axelrod, B. Smart 1975-7-18 22599 Orange North slope of ridge, upper Trabuco Canyon. 900 Comment
  SD122676  Styrax redivivus Reid Moran 1979-5-9 27196 Orange north slope San Juan Canyon, Santa Ana Mountains 380 Comment
  UC2042135  Styrax redivivus R. F. Thorne and C. W. Tilforth, E. W. Lathrop 1977-4-27 49686 Orange Northern Santa Ana Mountains: Sierra Peak. [locality information from field label; note on newspaper 'near Beek's Place, Skyline Drive crest, MDT Trail' (Main Divide Truck Trail) Comment
  UC2042142  Styrax redivivus R. F. Thorne with E. W. Lathrop, W. Wisura 1977-7-8 49598 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  SBBG72665  Suaeda calceoliformis J. Ewan 1931-7-31 Orange Smeltzer Comment
  RSA5854  Suaeda calceoliformis C. B. Wolf 1932-6-28 3789 Orange Bryant Ranch, near fence., 100 ft. south of NW corner of NW 1/4 of S.E. 1/4 of sect 27. 9 Comment
  CAS-BOT-BC110389  Suaeda esteroa Peter H. Raven 1957-9-28 11383 Orange At north limits of Surfside. Comment
  IRVC29762  Suaeda esteroa Barry S. Nerhus, Mark A. Elvin 2006-11-4 9 Orange Huntington Beach, Bolsa Chica Wetlands, SW portion of Reserve beside Pacific Coast Highway. Southern Coastal 0 Comment
  RSA624495  Suaeda esteroa L. C. Wheeler 1933-10-21 2223 Orange Newport Bay. 3 Comment
  UCR211858  Suaeda esteroa Valerie Soza, Kevin Clark, LeRoy Gross, Will Miller, Fred M. Roberts, G. D. Wallace 2001-4-4 1108 Orange South Coast, Seal Beach National Wildlife Refuge, Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226) 3 Comment
  RSA5956  Suaeda moquinii C. B. Wolf 1932-7-7 3850 Orange Bryant Ranch, 600 ft. N of Bixby Ave., 1 mi. W. of Hansen Road., (600 ft. N and 100 ft. W. of S.E. corner of N.E. 1/4 of N.E. 1/4 of Sect. 33) Comment
  RSA70024  Suaeda taxifolia F. W. Peirson 1924-2-10 4536 Orange Back of beach, Corona del Mar Comment
  RSA768500  Suaeda taxifolia Justin M. Wood 2009-12-1 1391 Orange Santa Ana River: marsh just upstream of Pacific Coast Highway. 0 Comment
  SEINET187082  Suaeda taxifolia Allan C. Keller 1937-11-26 Orange Alt. 20 to 40 ft. on cliffs, Doheny Palisades, Highway 101. Comment
  UCD169515  Suaeda taxifolia Rebecca T. Vo 2010-6-5 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  UCR224045  Suaeda taxifolia Justin M. Wood 2009-12-1 1391 Orange South Coast, Santa Ana River, marsh just upstream of Pacific Coast Highway 2 Comment
  UCR240097  Suaeda taxifolia Dick Newell 2012-9-29 299 Orange South Coast, Newport Beach, Back Bay Drive at Big Canyon parking area 2 Comment
  RSA0059069  Suaeda taxifolia CNPS Accuracy Assessment Team 2014-7-9 9560 Orange Talbert Nature Preserve. Comment
  UCR174213  Symphoricarpos A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33040 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  RSA573298  Symphoricarpos albus var. laevigatus Steve Boyd, Timothy S. Ross 1994-9-14 8355 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon just downstream of Lucus Canyon Trail crossing. 305 Comment
  RSA0063398  Symphoricarpos mollis Fred M. Roberts 1990-5-8 4620 Orange Chino Hills: Soquel Canyon, c. 1.2 km NNW of Gilman Peak. 240 Comment
  RSA697319  Symphoricarpos mollis Keith E. Hoffmaster 1931-3-22 s.n. Orange Santa Ana Mountains. Comment
  UCR26986  Symphoricarpos mollis E. W. Lathrop 1966-4-18 6177 Orange Santa Ana Mtns., Black Star Canyon Comment
  CAS-BOT-BC98283  Symphyotrichum subulatum var. parviflorum David D. Keck 1932-9-30 1911 Orange San Clemente, south side of town along highway. Comment
  IRVC26731  Synnotia villosa Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3165 Orange UCI Arboretum Southern Coastal 15 Comment
  SEINET10546348  Tabernaemontana David B. Du