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/cch_archive/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA460929  Abronia maritima N. C. Cooper 1942-11-9 888 Orange Balboa Comment
  RSA585055  Abronia maritima D. Atwood 1993-3-28 17715 Orange Bolsa Chica Ecological Reserve, California Dept. of Fish and Game. 0 Comment
  UCR16336  Abronia umbellata subsp. variabilis Steve Kulju 1974-5-27 s.n. Orange South Coast, Sunset Bay, 1 mile SE of the city of Seal Beach on State Hwy 1 5 Comment
  CAS-BOT-BC229299  Abronia villosa C. B. Wolf 1931-7-1 2259 Orange Atwood, lower end of Santa Ana Canyon 76 Comment
  RSA0023451  Acacia Scott D. White 1998-4-9 6267 Orange University of Calif. Irvine Campus; Drainage channel west of Medical Center, west of main campus circle. 15 Comment
  RSA7575  Acer macrophyllum Carl B. Wolf 1933-11-8 5541 Orange At Yaeyer's Cabin, Trabuco Canyon. 762 Comment
  UC218134  Acer macrophyllum P. A. Munz, R. D. Harwood 1920-4-25 6730 Orange Silverado Canyon Santa Ana Mts., Silverado Canyon (along stream) 548 Comment
  RSA0013961  Achillea millefolium Fred M. Roberts 2008-5-14 6969 Orange Lomas de Santiago: Loma Ridge, upper Bee Flat Cyn. below Loma Ridge Rd., 1.3 km N Bee Peak and 5.4 km NW Bolero Lookout, Irvine Ranch Conservancy. 377 Comment
  RSA696051  Achillea millefolium M. Funakoshi 1943-10-23 s.n. Orange Santa Ana. Comment
  RSA734282  Achnatherum coronatum A. C. Sanders, Linda Farley, Fred M. Roberts, David E. Bramlet 2008-4-1 34645 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 250 Comment
  RSA0028970  Achnatherum coronatum Keith E. Hoffmaster 1935-4-14 603 Orange Live Oak can. Comment
  SBBG103893  Acmispon americanus B. Pitzer, S. Hemstreet 1992-5-27 1966 Orange USFS Rd 3S04 to Blue Jay Group Cmpgrd, off St Hwy 74, ca. 2 air mi W of El Cariso Cmpgrd 762 Comment
  SD45472  Acmispon americanus Robert L. Dressler 1949-5-8 809 Orange 16 miles northeast of San Juan Capistrano. 310 Comment
  SD218336  Acmispon glaber Mark A. Elvin 2004-5-2 3406 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW UC Irvine campus center. 3 Comment
  UCSB47994  Acmispon heermannii Roberts, Jr., Fred 1980-7-7 Orange Santa Ana Mtns.; San Juan Canyon, Calif. Rte. 74; 2.2 km. ENE San Juan Guard Station; 0.6 km W Bench Mark 1100 305 Comment
  CAS-BOT-BC29186  Acourtia microcephala J. T. Howell 1927-6-22 2571 Orange Hills on north side of Santa Ana Canyon 152 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
  RSA790698  Adenostoma fasciculatum Jeanne Paxton 1934-4-21 5 Orange Modjeska Canyon. PR8. Comment
  RSA357  Adenostoma fasciculatum var. fasciculatum J. T. Howell 1928-4-15 919 Orange East boundary of the Rancho Santa Ana 229 Comment
  CAS-BOT-BC175450  Adiantum capillus-veneris A. C. Sanders; Fred M. Roberts 2008-7-16 35836 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Dripping Spring off LImestone Canyon, c. 7.5 mi. ESE of Tustin 391 Comment
  IRVC22503  Adiantum jordanii Fred M. Roberts 1985-5-1 1693 Orange Aliso Canyon, 2.1km NNE Aliso Peak, Aliso Viejo 67 Comment
  POM256963  Adiantum jordanii W. Pequegnat 1940-6-14 s.n. Orange Yaeger's Meadow. Santa Ana Mountains 914 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
  UCR188945  Aesculus californica Robert DeRuff 2004-1 549 Orange Newport Beach, Upper Newport Bay, Eastbluff North, below and north of intersection of Back Bay Drive and Eastbluff Drive 7 Comment
  CAS-BOT-BC180  Agoseris cinerea LeRoy Abrams 1901-6-15 1816 Orange Santiago Peak 914 Comment
  NY7051  Agoseris cinerea L. Abrams 1901-6-15 1816 Orange Santiago Peak trail. 914.4 Comment
  RSA679216  Agoseris grandiflora var. grandiflora Fred M. Roberts 2003-6-17 5917 Orange Just NE of Falcon roup Camp, 2.1km ESE Los Pinos Peak just west of main road. 1009 Comment
  RSA708526  Agoseris retrorsa Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6238 Orange Modjeska Peak, north slope along summit road, c.a. 50 meters NNW, by air, summit. 1643 Comment
  UCR242709  Agrostis Chris E. True 2013-5-2 s.n. Orange Bommer Canyon, NW of Aliso Viejo 137 Comment
  UCR215278  Agrostis pallens Fred M. Roberts 2008-5-14 6968 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 377 Comment
  UCR56319  Agrostis pallens Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, Santa Ana Mountains 275 Comment
  JEPS73752  Agrostis viridis Lawrence M. Booth 1932-6-7 1163 Orange Newport Bay 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
  RSA573292  Allium ampeloprasum Steve Boyd, Timothy S. Ross 1994-9-14 8349 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon trail at stream crossing in Lucas Canyon. 317 Comment
  POM6476  Allium praecox Philip A. Munz, L. T. Street, Williams 1919-5-3 2635 Orange Santa Ana River Canyon. 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
  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
  CLARK-A1528-917  Amaranthus albus Patricia A. Andrews 1975-6-26 5914 Orange Capistrano Bay Beach 9 Comment
  RSA798189  Amaranthus albus R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49593 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  RSA5812  Amaranthus albus C. B. Wolf 1932-6-28 3770 Orange Bryant Ranch: along western half of north boundary of 40 acre Valencia orange grove at Bryant Ave. and Hansen Road. 9 Comment
  UC537268  Amaranthus blitoides Lawrence M. Booth 1932-7-25 1309 Orange Santa Ana River, 0.5 mi from ocean Santa Ana River Comment
  UC537281  Amaranthus blitoides L. M. Booth 1932-12-16 1377 Orange Santa Ana River, near coast Santa Ana River Comment
  IRVC24277  Amaranthus blitoides Fred M. Roberts, G. A. Marsh 1985-10-26 2522 Orange Santa Ana River: adjacent to Huntington Beach; 0.7km SSW Adams Street bridge. southern coastal 4 Comment
  SDSU2093  Amaranthus palmeri Uknown 1947-8-23 1737 Orange Orange Grove, Redlands Comment
Read comments
Apr 10 2016
  RSA184132  Amaranthus powellii I. L. Wiggins 1965-10-24 20293 Orange Yorba Linda Blvd. 1/4 mi. E of State College Blvd., Fullerton. Comment
  POM201937  Amaranthus powellii subsp. powellii L. M. Booth 1932-7-21 1295 Orange Anaheim Creek Comment
  UCSB50645  Amaranthus retroflexus Roberts, Fred; Allen, R. 1982-7-4 Orange Chino Hills; Carbon Canyon, Carbon Canyon Rd., 0.6 km. by road SW county line; 2.3 km. NNW Gilman Peak 250 Comment
  CAS-BOT-BC13493  Amblyopappus pusillus P. A. Munz 1934-3-26 13135 Orange Newport Beach 15 Comment
  POM202164  Amblyopappus pusillus L. M. Booth 1932-5-12 1007 Orange Newport Bay. Comment
  POM5985  Amblyopappus pusillus Philip A. Munz 1918-5-5 2186 Orange Laguna Beach. Comment
  UCR143379  Amblyopappus pusillus L. C. Wheeler 1932-6-25 859 Orange Coastal Plains and Basins; Los Angeles Basin region, Inland arm of Newport Bay, sea level 0 Comment
  CAS-BOT-BC13606  Ambrosia acanthicarpa Ira L. Wiggins 1965-11-6 20351 Orange Near Well No. 14, Kraemer Oil Estates, near end of road leading to Rancho Santa Ana. Comment
  RSA184184  Ambrosia acanthicarpa I. L. Wiggins 1965-11-6 20351 Orange Near well #14, Kramer Oil Estates, near end of county road to Rancho Santa Ana. Comment
  RSA93934  Ambrosia acanthicarpa F. W. Peirson 1919-11-8 5275 Orange Road south of Arch Beach. Comment
  CAS-BOT-BC13771  Ambrosia chamissonis David D. Keck 1933-9-8 2541 Orange Sunset Beach 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
  UCR17120  Ambrosia chamissonis Steve Kulju 1974-5-27 s.n. Orange South Coast, Sunset Bay, 1 mile SE of the city of Seal Beach on State Hwy 1 5 Comment
  UCSB10368  Ambrosia chamissonis McElwain, Isabelle 1953-4-25 Orange U.S. 101, 2 mi. S of Huntington Beach Comment
  UCSB48034  Ambrosia chamissonis Roberts, Fred 1981-9-26 Orange Huntington Beach; Calif. Rte. 1, near mouth of Santa Ana River, 0.1 km. N jct. Brookhurst Ave.; 0.1 km. SW Bench Mark 7 2 Comment
  RSA696743  Ambrosia confertiflora Kenneth Beard s.n. Orange Wasteland E. of Placentia. Comment
  JEPS41031  Ambrosia psilostachya L. M. Booth 1932-8-5 1355 Orange Bolsa Creek Comment
  POM201785  Ambrosia psilostachya L. M. Booth 1932-7-19 1277 Orange Bolsas Marsh. Comment
  RSA703089  Ambrosia psilostachya Fred M. Roberts, Arthur Davenport 2003-9-11 6005 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
  SEINET11844102  Ambrosia psilostachya S. A. Thompson, Rawlins, J. E. 1988-1 5268 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  RSA666104  Ammannia coccinea Fred M. Roberts, Michelle Lee 2001-6-4 5488 Orange Rancho Mission Viejo: Chiquita Ridge, 0.3km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. (Canada Gobernadora. 226 Comment
  SEINET12120344  Ammi visnaga L. M. Booth 1932-1 1268 Orange Sant Ana River Flats, near the sea 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
  UCR193782  Amorpha californica A. C. Sanders, Fred M. Roberts 2008-7-3 35680 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 Comment
  RSA16473  Amorpha californica var. californica Percy C. Everett 1935-6-19 7235 Orange Trabuco canyon. 1/2 mile below W. head of canyon. 1067 Comment
  CAS-BOT-BC177252  Amorpha fruticosa Crawford; Johnston 1917-6-9 1225 Orange Santa Ana River near Corona Comment
  RSA378  Amorpha fruticosa J. T. Howell 1927-6-6 49 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC222309  Amsinckia douglasiana C. B. Wolf 1931-3-6 1864 Orange East side of Orange County Park 152 Comment
  UC1178237  Amsinckia intermedia Francia Chisaki 1957-4-3 927 Orange 6 mi s Irvine (just s of El Toro near top of hill on Hwy 101) Comment
  UC537057  Amsinckia intermedia P. A. Munz 1934-3-26 13132 Orange Newport Beach 15 Comment
  UCR223429  Amsinckia intermedia Dick Newell, Don Millar 2011-2-15 061 Orange South Coast, San Joaquin Hills, Laguna Wilderness Park, along Stagecoach Trail 131 Comment
  RSA0089446  Amsinckia intermedia Daniel Truong 1991-5-5 10 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of closed area. Comment
  IRVC204  Amsinckia menziesii var. intermedia L. Aldis 1965-4-27 Orange Irvine Park Comment
  IRVC25567  Amsinckia menziesii var. intermedia Fred M. Roberts 1989-3-17 4202 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  IRVC22644  Amsinckia menziesii var. intermedia B. Jaroslow 1986-3-26 2 Orange Bell Canyon, 2.1km NW Visitor Center, Casper's Regional Park 130 Comment
  HSC17835  Anagallis arvensis J. W. Johnson 1961-3-29 Orange Newport Beach, on S side of upper Newport Bay Comment
  JEPS43116  Anagallis arvensis Lawrence M. Booth 1932-6-28 1216 Orange Bolsas Creek Comment
  RSA792563  Anagallis arvensis Justin M. Wood 2011-2-28 3270 Orange South Coast: Santa Ana River, marsh just upstream of Pacific Coast Highway. Plants collected throughout the marsh and along the adjacent bike path. 0 Comment
  UCR239627  Anagallis arvensis Fred M. Roberts 2012-4-24 7516 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
  POM1029  Andropogon glomeratus C. B. Bradshaw s.n. Orange San Joaquin Ranch near Laguna. Comment
  POM201883  Anemopsis californica L. M. Booth 1932-6-4 1142 Orange Newport Lagoon. Comment
  RSA0037236  Anemopsis californica Dorothy Parsons 1932-5-11 s.n. Orange Santa Ana road. CP3. Comment
  RSA309584  Anemopsis californica J. R. Shevock 1974-4-28 3428 Orange Along Pacific Coast Highway 0.3 mile west of Brookhurst toward Beach Blvd. 3 Comment
  UCR193365  Antirrhinum coulterianum A. C. Sanders, Mitch Provance 2008-5-20 35426 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  CAS-BOT-BC354305  Antirrhinum multiflorum R. E. Riefner, Jr. 2007-6-29 07 -286 Orange Irvine Ranch Reserve, North Irvine Ranch, East Fork of upper Fremont Canyon along Black Star SCE Rd. 594 Comment
  UC1929693  Antirrhinum multiflorum R. E. Riefner Jr. 2008-7-21 08 -248 Orange Irvine Ranch Reserve, North Irvine Ranch, middle Fremont Canyon, east slope along Black Star SCE Rd. Comment
  UCR91395  Antirrhinum nuttallianum Scott D. White 1995-3-9 2541 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Lower San Juan Picnic Area, just north of Hwy 74 396 Comment
  POM4240  Antirrhinum nuttallianum subsp. nuttallianum I. M. Johnston 1918-5-4 1888 Orange Back of Laguna Beach, moist shaded hillside 61 Comment
  UCR162200  Antirrhinum nuttallianum subsp. subsessile Robert DeRuff 1983-1 275 Orange Southern Coast, Newport Beach, Upper Newport Back Bay, Castaway's Bluffs 24 Comment
  UCSB57586  Aphanes occidentalis Roberts, Fred 1986-4-24 Orange RANCHO MISSION VIEJO: Canyon east of Trampas Canyon, S of Hwy 74, 2.6km E Viejo Survey Mark 110 Comment
  UCR177863  Aphanisma blitoides Eliza L. Maher 2006-5-2 s.n. Orange South Coast, Dana Point Headlands, CNLM preserve 46 Comment
  RSA38679  Aquilegia formosa P. A. Munz 1946-10-26 11619 Orange Botanic Garden. Comment
  RSA0054901  Arabis glabra Keith E. Hoffmaster 1934-4-22 178 Orange Santa Ana mts. [Orange or Riverside]. Comment
  IRVC18334  Aralia californica Gordon A. Marsh, K. G. Marsh Orange [Silverado Canyon], Bigcone Springs. Santa Ana Mountains Comment
  RSA725520  Araujia sericifera Fred M. Roberts, Robert L. Allen 2007-9-28 6604 Orange Santa Ana Mtns.: Silverado Cyn., along Silverado Cyn. Rd. at eastern edge of town of Silverado. 347 Comment
  SEINET10449344  Arctostaphylos catalinae James S. Miller 2001-12-15 Miller 10652 Orange Rancho Santa Ana Botanic Garden, Santa Ana, CA. 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-BC23106  Arctostaphylos glandulosa subsp. glandulosa Robert F. Thorne; J. Olmsted 1963-7-26 32827 Orange Santa Ana Mts., Cleveland National Forest, Trabugo District. 1188 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
  RSA16475  Arctostaphylos glandulosa subsp. glandulosa P. C. Everett 1935-6-19 7232 Orange Main divide motorway. Upper sonoran or arid transition. Sun, W. slope, sandstone. 1280 Comment
  RSA443839  Arctostaphylos glandulosa subsp. glandulosa R. Meinzer, T. Mulroy 1971-4-25 s.n. Orange Santa Ana Mts: Junction of road to Upper Trabuco Canyon & Horsethief trail. Comment
Read comments
Feb 5 2016
  RSA629326  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15510 Orange Rd. 6S06, 1km northeast of Blue Jay Campground, north of El Cariso (Hwy 74) 1050 Comment
  SD247631  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
  RSA5328  Arctostaphylos glandulosa subsp. zacaensis B. D. Stark 1933-1-4 4486 Orange Ridge above Claymine Canyon. No. end of Santa Ana Mts. 305 Comment
  RSA545  Arctostaphylos glandulosa subsp. zacaensis J. T. Howell 1927-6-26 222 Orange Claymine Canyon, near Sierra Peak. 457 Comment
  UCR145984  Arctostaphylos glauca June Latting 1977-1-12 s.n. Orange Chino Hills, Tonner Canyon 213 Comment
  RSA303426  Arctostaphylos glauca var. glauca J. R. Shevock 1970-1-21 612 Orange Modjeska Cyn. 305 Comment
  SEINET10576017  Arctostaphylos pumila J. Stone 2002-3-14 Stone 3357 Orange Rancho Santa Ana Botanic Garden, 1500 N. College Ave., Claremont, CA. Comment
  CAS-BOT-BC334498  Arctotheca prostrata R. E. Riefner, Jr. 2013-7-6 13 -125 Orange City of Irvine, Irvine Valley College, Irvine Center Dr. near College St. 37 Comment
  UCR191667  Arctotheca prostrata Robert DeRuff 2004-1 548 Orange South Coast, Newport Beach, Upper Newport Bay, bluff below Eastbluff North 18 Comment
  SD53699  Arctotis stoechadifolia E. Norland 1963-5-24 Orange Cypress, Bishop St. Comment
  SEINET4085709  Argemone munita var. robusta G. B. Ownbey, F. Ownbey 1954-1 2177 Orange Between Modjesca Peak and Santiago Peak. 1524 Comment
  UCSB52468  Aristida adscensionis Roberts, Fred; Marsh, K. 1983-2-25 Orange Laguna Beach, Goff Ridge, southern Temple Hill, 0.9 km NNE Goff Island 263 Comment
  RSA682760  Aristida purpurea Scott D. White, Amanda Duchardt 2003-3-27 8857 Orange Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  RSA663206  Aristida purpurea var. parishii R. E. Riefner 2000-8-21 20 -729 Orange NCCP North Ranch Policy Plan Area. Along dort road running S from Baker Canyon Road to Silverado Road. 335 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
  POM293902  Artemisia biennis Robert M. Muir 1946-10-24 s.n. Orange Midway between Corona del Mar and Santa Ana. Comment
  CAS-BOT-BC383077  Artemisia californica Andrew Townesmith; Karen M. Meyer; Tracy Scott 2007-3-11 676 Orange Cleveland National Forest. Off Long Canyon Road (Forest Service road 6S05), at mile post 2 (2.0 miles NW of route 74) 967 Comment
  IRVC9384  Artemisia californica B. Gittins 1963-3-8 22 Orange east shore. Newport Beach Comment
  SD144070  Artemisia californica Scott D. White 1996-12-20 4634 Orange Santa Ana Mts., above Modjeska Canyon 424 Comment
  UCSB68454  Artemisia californica Hook, Elizabeth; Tran, Caroline 2006-2-4 Orange Southern Coastal: San Joaquin Marsh; NW bluff edge (Tustin 7.5': 11s -420502E, 3724694N) Comment
  POM201845  Artemisia douglasiana L. M. Booth 1932-7-23 1302 Orange Corona del Mar, Newport Beach Comment
  POM6088  Artemisia dracunculus Daniel J. Crawford 1916-8-3 s.n. Orange Arch Beach. Laguna Beach Region. Comment
  UC1119516  Artemisia tridentata subsp. tridentata H. E. Norton 1931-3-28 51 Orange Corona Quadrangle Comment
Read comments
Aug 13 2014
  RSA0059638  Arthrocnemum subterminale Valerie Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary D. Wallace 2001-4-4 1107 Orange Seal Beach National Wildlife Refuge: Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  RSA234505  Arthrocnemum subterminale James Henrickson 1970-7-25 5048 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
  CDA31508  Arundo donax D. G. Kelch 2006-12-9 06 .559-B Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  IRVC19696  Asclepias fascicularis Karlin G. Marsh 1983-5-25 s.n. Orange Sycamore Hills, Laguna Canyon; freshwater marsh between Laguna Canyon laterals 6 & 7. Laguna Beach Comment
  UCR29085  Aster bernardinus A. C. Sanders, J. West 1982-11-6 3270 Orange Peninsular Range; Santa Ana Mtns., above Lake Elsinore near Los Pinos Spring 979 Comment
  RSA93824  Aster hesperius F. W. Peirson 1924-10-19 5241 Orange Wintersberg Comment
  IRVC29820  Aster subulatus var. ligulatus Artie Thomas, Mark A. Elvin 2006-9-23 609232 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
  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
  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
  RSA653211  Astragalus didymocarpus var. didymocarpus David Barrios 1991-5-1 12 Orange Yorba Linda, 1500 ft. northwest of Fairmont Ave and Quail Circle. 365 Comment
  UCR209362  Astragalus didymocarpus var. didymocarpus Fred M. Roberts, D. E. Bramlet 2008-4-1 6836 Orange Lomas de Santiago, Loma Ridge, East Lomas Ridge Road along crest, 3.2 km northwest of Bee Peak and 3.4 km northeast of Rattlesnake Reservoir Dam, Irvine Ranch Conservancy 388 Comment
  RSA554629  Astragalus trichopodus Scott D. White 1992-10-13 957 Orange Vicinity of city of Brea, immediately N of Carbon Canyon Road and East of Placentia Avenue. +- 1 mile (airline) S/SE of Tonner Canyon. 183 Comment
  UCD105449  Astragalus trichopodus G. H. Vansell 1935-6-12 s.n. Orange Yerba Linda area. Comment
  UCR12616  Astragalus trichopodus subsp. leucopsis R. G. Sullivan 1972-4-16 720416- 8 Orange Santa Ana River Channel, river bottom near Coal Canyon Road 122 Comment
  RSA380  Astragalus trichopodus var. lonchus J. T. Howell 1928-2-7 815 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  UC1286978 Image available Astragalus trichopodus var. phoxus C. L. Hitchcock 1966-3-15 24141 Orange Stearns Lease, 1 1/2 miles e. of Brea Comment
  CAS-BOT-BC170565  Atriplex Mark A. Elvin; D. Kelch 2006-12-9 5306 Orange Newport Backbay; Big Canyon, lower end - Southern Coastal 3 Comment
  UC1543166  Atriplex Donald G. Nelson 1935-6-28 338 Orange Fullerton, S. Brookhurst Ave 51 Comment
  CAS-BOT-BC248871  Atriplex amnicola R. E. Riefner, Jr. 2006-2-12 06 -21 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
  UC1980254  Atriplex amnicola R. E. Riefner Jr. 2006-5-7 06 -180 Orange North end of City of San Clemente, along I-5 Freeway, N side, immediately S of Camino de Estrella exit ramp. Comment
  RSA737231  Atriplex amnicola R. E. Riefner 2006-5-7 06 -178 Orange N end of City of San Clemente, along I5, N side, immediately S of Camino De Estrella exit ramp. 66 Comment
  RSA743666  Atriplex amnicola R. E. Riefner 2007-10-26 7 -455 Orange City of San Clemente, vicinity of Calle Vicente and Ave. Vaquero. 40 Comment
  HSC25118  Atriplex californica James Henrickson 1970-9-5 5344 Orange 2 mi. NW of Huntington Beach, in Bolsa Chica Salt Marsh along Pacific Coast Hwy., along inner Bolsa Bay. 0 Comment
  UC536975  Atriplex californica Lawrence M. Booth 1932-5-19 1061 Orange Newport Bay Newport Bay (margin of tidal flat) Comment
  POM278963  Atriplex canescens Lyman Benson 1945-6-15 11797 Orange Laguna Beach. 8 Comment
  SD40182  Atriplex canescens Edith A. Purer 1932-8-31 4869 Orange Near Route 101. Comment
  POM654  Atriplex coulteri L. R. Abrams 1903-4-18 3270 Orange Near San Juan Capistrano Comment
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Feb 4 2009
  UC150079  Atriplex coulteri LeRoy Abrams 1903-4-18 3270 Orange Trabuco Arroyo near Capistrano; Trabuco Arroyo near Capistrano Comment
  CAS-BOT-BC170606  Atriplex glauca A. C. Sanders 2008-4-29 35139 Orange Lomas de Santiago, western end of Loma Ridge on road to sheriff's trianing facility, c. 1.5 mi. SW of Santiago Reservoir, Black Star Canyon 7.5' - Peninsular Range, Santa Ana Mtns. 335 Comment
  SBBG133612  Atriplex glauca R. E. Riefner Jr. 2005-12-31 05 -784 Orange ca. 0.5 mi N of Alton Pkwy on E side of SR-241; Lake Forest 230 Comment
  RSA743559  Atriplex glauca R. E. Riefner 2002-5-4 2 -88 Orange City of Newport Beach, Upper Newport Bay, general vicinity of Bayview Wy. and Bayview Pl. 7 Comment
  RSA743662  Atriplex glauca R. E. Riefner 2006-6-30 6 -334 Orange City of Rancho Santa Margarita, vicinity of Towne Center Dr. and Alton Pkwy. 291 Comment
  HSC4336  Atriplex lentiformis J. W. Johnson 1961-3-30 Orange Newport Beach, lower slope of S cliff by Bay Rd. and Big Canyon. Comment
  UCR240109  Atriplex lentiformis subsp. breweri Dick Newell 2012-9-29 296 Orange South Coast, Newport Beach, Back Bay Drive at Big Canyon parking area 2 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
  POM201918  Atriplex leucophylla L. M. Booth 1932-8-5 s.n. Orange West Newport Beach Comment
  UC444306 Image available Atriplex parishii S. B. Parish and W. F. Parish Oct 1881 1119 Orange Costa Station; ; ; Costa Station, Los Angeles Co. Now in Orange Co Comment
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Jul 11 2007
  RSA717049  Atriplex prostrata Fred M. Roberts, Chris M. Barnhill 2005-9-27 6282 Orange San Juan Capistrano: San Juan Creek wash, east of La Novia Road bridge, 1.4km E Mission San Juan Capistrano. 27 Comment
  RSA65341  Atriplex rosea F. W. Peirson 1924-8-29 s.n. Orange 4 miles south of Santa Ana. Comment
  UCSB48235  Atriplex rosea Roberts, Jr., Fred 1981-5-2 Orange Mission Viejo; Camino Capistrano, below Crown Valley Overpass 49 Comment
  HSC84220  Atriplex semibaccata B. Pitzer, L. F. LaPre 1986-10-20 309 Orange Siphon Reservoir, ca. 5 mi. NE of Irvine, and ca. 1 mi. NE of intersection of Irvine Blvd. and Sand Canyon Ave. 122 Comment
  POM122998  Atriplex semibaccata Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  POM201921  Atriplex semibaccata L. M. Booth 1932-6-9 1180 Orange Santa Ana River, 1 mile from ocean. Comment
  POM201891  Atriplex serenana L. M. Booth 1932-5-19 1070 Orange Newport Lagoon, Corona del Mar. Comment
  RSA252  Atriplex serenana J. T. Howell 1927-7-22 459 Orange North of Botany Garden, Rancho Santa Ana. 274 Comment
  UC536973  Atriplex serenana var. davidsonii Lawrence M. Booth 1932-7-1 1248 Orange Newport Lagoon Comment
  UCR154266  Atriplex suberecta Mark A. Elvin 2004-5-2 3424 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  UCR208060  Atriplex suberecta R. E. Riefner Jr. 1999-5-22 99- 292 Orange South Coast, city of Dana Point, west of Pacific Coast Hwy, vicinity of Salt Creek Park and Ritz Carlton Hotel 15 Comment
  RSA48695A  Atriplex subspicata I. M. Johnston 1924-8-29 s.n. Orange 2.5 miles north of Balboa. Comment
  UCR130484  Atriplex triangularis R. E. Riefner Jr. 2003-8-31 03- 340 Orange South Coast, Costa Mesa, Talbert Regional Park, Discovery Walk Trail and Balboa Ave. 12 Comment
  IRVC25412  Atriplex watsonii Fred M. Roberts, Wayne Ferren 1987-4-8 3359 Orange Upper Newport Back Bay, west side, North Star Beach, 0.8km N Coney Island, Newport Beach 0 Comment
  RSA453967  Atriplex watsonii F. R. Fosberg 1930-7-10 S 3188 Orange Anaheim Landing. [Los Angeles Co. on label] Comment
  RSA453969  Atriplex watsonii H. E. Hasse, Anstruther Davidson 1907-9-12 1768 Orange Newport. Comment
  CDA22567  Avena fatua J. B. Anderson 1966-4-16 584 Orange South Coast; Corona Del Mar: Buck Gully, Little Corona 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
  UCSB47968  Avena fatua Roberts, Fred 1980-3-3 Orange Hills 1.5 km ENE of Dana Hills High School; Dana Point 85 Comment
  IRVC29728  Azolla filiculoides Mark A. Elvin, Barry S. Nerhus 2006-11-4 5240 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA756322  Baccharis douglasii A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37201 Orange Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Agustine Staging Area 260 Comment
  RSA93212  Baccharis douglasii F. W. Peirson 1924-10-18 5244 Orange Spring hole, Wintersberg Comment
  POM50723  Baccharis emoryi Helen D. Geis 1902-12-7 519 Orange Santa Ana Comment
  UC284887  Baccharis glutinosa P. A. Munz 1923-9-6 7733 Orange Santa Ana Mts., Holy Jim Canyon 762 Comment
  UCD129392  Baccharis malibuensis R. E. Riefner Jr.; A. Wolf 2000-8-23 20- 732 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: north of Santiago Creek and immediately south of major stream fork. 304 Comment
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Jan 6 2018
  RSA0008327  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08 -175 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 483 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
  RSA0028029  Baccharis pilularis Fred M. Roberts 2012-9-6 7702 Orange San Joaquin Hills: Buck Gully, Buck Gully Trail, about 1.8 kilometers NW Pelican Hill summit. 64 Comment
  RSA528054  Baccharis pilularis A. C. Sanders 1990-10-6 10200 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Hwy 1 1 Comment
  RSA703357  Baccharis pilularis Fred M. Roberts, Laura Cohen 2004-2-13 6024 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Shady Canyon tributary to Cristianitos Cyn., 1.34 km NW Sycamore Gate, 0.85 km W of Cristianitos Road. 156 Comment
  RSA731919  Baccharis pilularis Fred M. Roberts, Sandy Leatherman 2007-11-27 6660 Orange Anaheim: Santa Ana River, Santa Ana Canyon, just west of Horseshoe Bend on S side of E La Palma Ave., about 0.3km E Weir Cyn. Rd. bridge. 100 Comment
  IRVC505  Baccharis pilularis subsp. consanguinea B. Newman 1965-3-14 Orange Dana Point Comment
  UCR247874  Baccharis pilularis subsp. consanguinea Fred M. Roberts 2012-9-6 7702 Orange SAN JOAQUIN HILLS: Buck Gully, Buck Gully Trail, about 1.8 km NW Pelican Hill summit. 64 Comment
  CDA10394  Baccharis salicifolia D. G. Kelch 2006-12-9 6 .557 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  LA203019  Baccharis salicifolia James Lauter; 1953-4-25 sn Orange U.S. Highway 101, 17 mi. S of Laguna, San Mateo Creek bed Comment
  UCR186689  Baccharis salicifolia T. B. Salvato, Katie Kurtz, Mitch Provance 2006-10-15 1911 Orange South Coast, Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Drive 6 Comment
  SBBG63169  Baccharis salicina E. Rockwell 1919-1 198 Orange near Brea 106 Comment
  UCD129396  Baccharis salicina P. B. Kennedy 1925-1-12 1 Orange Irvine Ranch, on range. Comment
  UCR46557  Baccharis salicina B. G. Pitzer, L. F. LaPre 1986-10-20 0310 Orange Peninsular Range; Santa Ana Mtns., Siphon Reservoir, c. 5 mi NE of Irvine and c. 1 mi NE of intersection Irvine Blvd and Sand Canyon Ave 122 Comment
  SEINET11861792  Baccharis viminea J. F. Bright, Wyman, C. 1933-4-8 8197 Orange near Del Toro Comment
  UCR240177  Bacopa monnieri R. E. Riefner Jr. 2012-7-1 12- 295 Orange South Coast, city of Mission Viejo, Oso Creek, c. 1.3 mi north of Paseo de Colinas Ave. on Camino Capistrano Ave. 88 Comment
  CAS-BOT-BC16365  Barbarea orthoceras E. K. Balls 1955-4-4 20427 Orange 2.7 miles southwest from Orange-Riverside County line, along Highway 74, San Juan Capistrano to Elsinore. 304 Comment
  SD255122  Barbarea orthoceras R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49818 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  SD80928  Bassia hyssopifolia James Henrickson 1970-7-24 4953 Orange 1I(c) miles northwest of Huntington Beach along border of Bolsa Chica Salt Marsh at southwest end of Huntington Beach Mesa. 7 Comment
  SEINET238998  Bassia hyssopifolia R. D. Goeden 1965-7-7 Orange Tustin township near Peters Canyon Channel E of Santa Ana Marine Corps Air Station (Tustin 7.5' Q.) 61 Comment
  RSA184173  Bassia hyssopifolia I. L. Wiggins 1966-4-22 20616 Orange On eroded roadway leading to oilwell, W side of Associated Road, between Yorba Linda Boulevard and Imperial Highway. Comment
  RSA5447  Bassia hyssopifolia C. B. Wolf 1932-9-13 4025 Orange Bryant Ranch: Triangle of waste ground S of Bryant Ave., & 1/2 mi. west of Los Alamitos Blvd., (Triangle waste ground at NW corner of SW 1/4 sect. 30 T4S R11W) 8 Comment
  RSA689547  Bassia hyssopifolia R. E. Riefner 2003-8-17 3 -332 Orange Costa Mesa, Talbert Regional Park, Discovery Walk Road and Balboa Avenue. 12 Comment
  LA105119  Batis maritima Barry A. Prigge; 1988-6-30 8118 Orange eastern edge of Newport Beach, NE of Pacific Coast Hwy bridge over Santa Ana River/Greenville-Banning channels 0 Comment
  RSA439758  Batis maritima Anstruther Davidson 1907-9-1 1769 Orange Newport Comment
  RSA609049  Batis maritima L. C. Wheeler 1932-6-25 858 Orange Newport Bay. 1 Comment
  UCR26036  Batis maritima Wayne R. Ferren 1980-8-27 2330 B Orange South Coast, along channel in Newport Backbay west side of Backbay Drive, about 1.5 km northeast of Hwy 1, Newport Beach Comment
  UCSB21665  Batis maritima Keefe, Joseph 1967-3-26 Orange West edge of Bolsa Bay, on California Highway 1, 0.4 mile south of junction with Warner Avenue, Sunset Beach 1 Comment
  RSA734857  Bebbia juncea A. C. Sanders, Mitch Provance 2008-5-20 35404 Orange Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 345 Comment
  CAS-BOT-BC106376  Bebbia juncea var. aspera Helen D. Geis 1902-1-1 550 Orange Santiago Cr. Comment
  CAS-BOT-BC106377  Bebbia juncea var. aspera Helen D. Geis 1902-12-6 s.n. Orange Santiago Creek Comment
  CAS-BOT-BC106378  Bebbia juncea var. aspera Helen D. Geis 1902-1-1 s.n. Orange Santiago Canyon [Canon] Comment
  UCSB48366  Berberis aquifolium var. dictyota Roberts, Jr., Fred 1982-4-18 Orange Santa Ana Mtns.; Hot Springs Canyon, 0.6 km. SW Falcon Group Camp 1033 Comment
  SD247611  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
  IRVC26420  Berberis nevinii Mark A. Elvin 2004-2-22 3150 Orange UCI Arboretum Southern Coastal 15 Comment
  LA204060  Berberis pinnata subsp. pinnata W. E. Pequegnat; 1937-9-3 77 Orange Santa Ana Mountains, Santiago Peak 1066 Comment
  POM48009  Berula erecta I. M. Johnston 1924-8-29 s.n. Orange 4 mi. S of Santa Ana. Comment
  RSA234518  Beta vulgaris James Henrickson 1970-7-25 5082 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. 2 Comment
  UCR182888  Bidens laevis Pat Akers 2006-3-25 PA2 06 Orange Yorba Linda, N edge of Santa Ana River. south of La Palma Dr., 0.5-0.8 mi. east of Yorba Linda Dr 122 Comment
  UCR194556  Bloomeria crocea A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35329 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
  RSA698736  Bloomeria crocea Minor Warne 1934-04 s.n. Orange Panerama Heights Comment
  SEINET199453  Bloomeria crocea var. crocea J. R. Glen 1957-5-3 Orange 0.5 mile from the San Bernardino county line. 3 miles east of Olinda along Carbon Canyon road 201 Comment
  UCR86993  Bloomeria crocea var. crocea B. G. Pitzer, Stu Hemstreet 1992-5-27 1955 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, along Forest Service Road 3S04 to Blue Jay Group Campground, off Hwy 74 (Ortega Hwy), c. 2 mi west of El Cariso Campground 765 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-BC31013  Bolboschoenus maritimus LeRoy Abrams 1901-6-12 1764 Orange Salt Marsh west of Westminster. Comment
  UCSB56463  Bolboschoenus maritimus Thorne, Robert 1975-4-6 Orange Head of Newport Bay Comment
  UCSB36205  Bolboschoenus maritimus Ferren, Wayne; Whitmore, S. 1980-8-27 Orange Along tidal ditch, in salt marsh of Newport Backbay; just W of Backbay Drive; ca. 3 km. NE of Rt. 1, Newport Beach Comment
  SD127868  Bolboschoenus maritimus subsp. paludosus Richard Marin 1971-5-11 M 71 80 Orange Corner of MacArthur Blvd. and University Drive, Irvine 0 Comment
  UC536806  Bolboschoenus robustus Lawrence M. Booth 1932-5-24 1105 Orange Newport Lagoon Comment
  UCD169656  Bothriochloa barbinodis R. F. Thorne; E. W. Lanthrop, W. Wisura 1977-7-8 49623 Orange Santa Ana Mountains: along Ortega Highway (74), about 1/4 mile above San Juan Fire Station. 600 Comment
  UCSB52876  Bothriochloa barbinodis Roberts, Fred 1983-3-16 Orange Laguna Beach, Sycamore Hills, central ridge; 1.4 km NNE jct of El Toro and Laguna Cyn Rds; 5.4 km ESE Signal Peak 177 Comment
  UCR218460  Bougainvillea glabra Robert DeRuff 2008-1 348 Orange South Coast, Upper Newport Bay, between Mariner's Drive and 23rd St. 12 Comment
  CAS-BOT-BC95425  Bowlesia incana Helen D. Geis 1902-1-1 526 Orange Santiago Creek Comment
  POM201613  Bowlesia incana L. M. Booth 1932-5-19 1065 Orange Newport Bay. Comment
  SFV16196  Bowlesia incana R. K. Stachelek, B. Anderson, F. Schropshire 1995-3-1 39 Orange Newport Beach, Upper Newport Bay on Back Bay Drive about 0.5 miles north of Shellmaker Island. Mesic roadside at base of coastal bluff adjacent to semi-disturbed coastal sage scrub area. Comment
  UCR140793  Brachypodium distachyon Robin G. Marushia 2004-5-4 024 Orange Southern Coast, Crystal Cove State Park, interior of El Moro Canyon, east side of canyon, utility pole turnout above riparian area crossing 183 Comment
  IRVC28773  Brassica geniculata Duy D. Nguyen 2006-2-4 1 Orange San Joaquin Marsh; NW Edge of Marsh. Southern Coastal 5 Comment
  UCR186136  Brassica geniculata T. B. Salvato, Katie Kurtz 2006-10-15 1921 Orange South Coast, Irvine, San Diego Creek flood control channel, near Michelson Drive and Harvard Avenue 6 Comment
  CAS-BOT-BC30256  Brassica nigra Alice Eastwood 1934-4-29 s.n. Orange Rancho Santa Ana. Comment
  CDA22511  Brassica nigra D. Nguyen, C. Nguyen 2006-2-4 3 Orange Southern Coastal; San Joaquin Marsh; northwest edge of marsh. Comment
  IRVC20786  Brassica nigra Fred M. Roberts, S. L. Fritzke 1982-4-2 468a,b,c Orange hills, 3.5km ESE Aliso Peak; 3.2km ESE Alicia Fire Station, N of Del Avion, Laguna Niguel 100 Comment
  UCD114848  Brassica rapa Ira L. Wiggins 1965-11-3 20315 Orange Orange grove just east of California State College campus, Fullerton. Comment
  RSA650639  Brassica rapa var. rapa Daniel Truong 1991-5-5 8 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of closed area. Comment
  RSA0069232  Brassica tournefortii Fred M. Roberts, Megan Lulow 2009-3-18 7137 Orange Santa Ana Mtns. Region: Lomas de Santiago: Loma Ridge at Calochortus Ridge, near East Loma Ridge Road, 2.6 km NW Bee Peak, &3.4 km NE of Rattlesnake Reservoir Dam. 375 Comment
  CAS-BOT-BC106303  Brickellia californica Helen D. Geis 1902-1-1 523 Orange Santiago Creek Comment
  UCR142297  Brodiaea filifolia D. E. Bramlet, Sandy Leatherman 1998-5-21 2625 Orange Slope adjacent to a tributary of Segunda Deshecha Canada, c. 610 m N of the exisitng access road (Telaga Valley Dr.) and 2.9 km N of Avenida Pico. c. 1.93 km west of Cristianitos Canyon and 640 m west of Wilson Camp Rd 201 Comment
  UCR142299  Brodiaea filifolia Robert Hamilton 1998-6-19 s.n. Orange SCE easement N of the Foothill Transportation Corridor; 1.3 km N of El Toro Road and 1.6 km east of Portola Parkway 290 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
  RSA792246  Bromus carinatus A. C. Sanders, Fred M. Roberts 2008-4-22 35025 Orange Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 366 Comment
  SD241666  Bromus carinatus A. C. Sanders, Fred M. Roberts 2008-4-8 34751 Orange Peninsular Range; Santa Ana Mountains: Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Road, above Dripping Springs Loop Road (El Toro 7.5'Q) 456 Comment
  RSA653209  Bromus catharticus David Barrios 1991-5-8 27 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 365 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
  SEINET14401104  Bromus catharticus Czarnecki 1966-5-20 108 Orange Near State College Blvd and Yorba Linda Blvd, Fullerton Comment
  RSA0073653  Bromus diandrus Fred M. Roberts 2010-3-12 7182 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
  JEPS71162  Bromus hordeaceus L. M. Booth 1932-5-12 1023 Orange Newport Bay Comment
  POM1256  Bromus hordeaceus H. M. Hall 1902-05 3287 Orange Santa Ana River 183 Comment
  RSA542558  Bromus hordeaceus Fred M. Roberts 1987-4-21 3380 Orange Aliso Viejo: Aliso Creek, Aliso Creek bike trail, 3.0 kilmeters ENE Moulton Peak., UTM 3715500m N, 433650m E 73 Comment
  RSA713565  Bromus inermis subsp. inermis R. E. Riefner Jr. 2005-10-1 5 -702 Orange City of Costa Mesa, South Coast Dr. at Susan Rd. 16 Comment
  UCR193601  Bromus madritensis A. C. Sanders, Fred M. Roberts 2008-5-6 35235 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 290 Comment
  CAS-BOT-BC161817  Bromus rubens Ira L. Wiggins 1966-2-19 20455 Orange Carbon Canyon near Orange County Survey Bench Mark RCE 7872. Comment
  CAS-BOT-BC161818  Bromus rubens Ira L. Wiggins 1966-3-5 20507 Orange Along Highway S-18, about 4.5 miles east of Laguna Beach. Comment
  CAS-BOT-BC161822  Bromus rubens Ira L. Wiggins 1966-3-18 20531 Orange Experimental Garden back of greenhouse, California State College at Fullerton. Comment
  UCR191327  Bromus rubens A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34610 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 290 Comment
  POM363952  Bromus rubens Alice Jane Merritt 1893-05 s.n. Orange Santa Anna [Santa Ana] Comment
  RSA590951  Bromus rubens Fred M. Roberts 1991-5-2 4775 Orange San Joaqui Hills, Laguna Canyon, Laguna Laurel, Just W of Laguna Canyon Road, 2km N jct El Toro Road, 4.5km E Signal Peak., UTM Z113718000mN, 4 29 200m E 110 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
  POM122271  Cakile edentula subsp. edentula Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  CAS-BOT-BC36892  Cakile edentula var. edentula A. Davidson M. D. 1907-9-1 1770 Orange Newport. Comment
  UCSB48047  Cakile maritima Roberts, Fred 1981-9-26 Orange Huntington Beach; Calif. Rte. 1, near mouth of Santa Ana River, 0.1 km. N jct. Brookhurst Ave.; 0.1 km. SW Bench Mark 7 2 Comment
  RSA737234  Calandrinia breweri R. E. Riefner 2008-3-12 08 -34 Orange Irvine Ranch Reserve, North Irvine Ranch, East Fork of upper Fremont Canyon along Black Star SCE Rd. 716 Comment
  UCR203902  Calandrinia breweri R. E. Riefner Jr. 2008-5-16 08- 86 Orange Irvine Ranch Reserve, north Irvine Ranch, lower eastern Fremont Canyon area, Lakeview SCE Road 549 Comment
  UCR223960  Calandrinia ciliata Fred M. Roberts 2008-4-9 6860 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve, near Outlook 2, 0.7 km west of Marine Institute, Dana Point Harbor 52 Comment
  CAS-BOT-BC438320  Calandrinia ciliata Ira L. Wiggins 1966-3-5 20508 Orange Along Highway S-18, about 4.5 mi. E. of Laguna Beach. Comment
  IRVC29833  Callistemon Tom McCrainie, Mark A. Elvin 2006-9-23 7 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
  UCR210367  Callistemon viminalis T. B. Salvato, Billy Deane 2006-10-16 1942 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  RSA724030  Callistemon viminalis R. E. Riefner Jr. 2006-11-14 6 -674 Orange City of Irvine, San Diego Creek; vicinity of Campus Ave. at University Dr. 5 Comment
  IRVC22073  Callitriche marginata Fred M. Roberts 1983-5-29 1101 Orange hills, 1.0km NNW Dana Hills High School; 1.6km NE Bench Mark 150, Dana Point 98 Comment
  RSA220977  Calochortus catalinae E. W. Lathrop 1966-3-23 6098 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA582810  Calochortus catalinae Mark Elvin 1995-05 4 Orange Santa Ana Mountains: Starr Ranch, National Audubon Society; Bell Creek, junction of Leslie Love Trail. 213 Comment
  RSA747612  Calochortus catalinae Fred M. Roberts 2000-4-27 5302 Orange Lomas de Santiago: Lomas Ridge, Agua Chinon Wash, 1.5 km S Bolero Spr. and 2.1 km WSW Bolero Lookout. 281 Comment
  RSA749289  Calochortus catalinae Fred M. Roberts 1999-4-2 5167 Orange Lomas de Santiago: ridge between Limestone Cyn. and Santiago Creek wash, 0.7 km W Silverado Sch. and 4.3 km NNW Bolero Lookout. 330 Comment
  RSA750699  Calochortus catalinae D. E. Bramlet 2008-3-26 4124 Orange Bee Cyn. Bowerman landfill site. 148 m S of the Bee Cyn Access Road, 296 m W of the landfill entrance. Comment
  RSA751326  Calochortus catalinae A. C. Sanders, Fred M. Roberts 2008-5-6 35260 Orange 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
  UCR192228  Calochortus catalinae A. C. Sanders, Fred M. Roberts 2008-5-6 35260 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
  UCR222412  Calochortus catalinae D. E. Bramlet 2008-3-31 4136 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, 223 m east of upper Hicks Haul Rd., tributary of Limestone Canyon, 1 km south of Santiago Canyon Rd. 328 Comment
  IRVC28857  Calochortus plummerae Mark A. Elvin 2005-5-14 4312 Orange UCI Arboretum Southern Coastal 15 Comment
Read comments
Oct 3 2013
  POM23718  Calochortus splendens Russell S. Woglum 1938-5-8 1617 Orange Ortega Highway between Capistrano and Elsinore. Comment
  RSA16335  Calochortus splendens Percy C. Everett 1935-6-18 7199 Orange Santa Ana Mountains, Main Divide Motorway. 7.0 miles from Santiago Peak. 1311 Comment
  RSA542333  Calochortus splendens Fred M. Roberts 1988-4-10 3919 Orange Lomas De Santiago: Loma Ridge, 1.0 kilometer N Bolero Lookout. 415 Comment
  RSA651261  Calochortus splendens Russell S. Woglum 1932-4-16 s.n. Orange Trabuco Canyon, Santa Ana Mountains, Cleveland National Forest Comment
  RSA68627  Calochortus splendens Frank W. Peirson 1922-5-18 3061 Orange Santa Ana River 122 Comment
  SEINET4063239  Calochortus splendens G. Sphon 1959-1 325 Orange Between Upper and Lower San Juan Camps, Cleveland National Forest. Comment
  CAS-BOT-BC492704  Calochortus splendens Agnes M. Bowman 1899-3-1 s.n. Orange El Modena Comment
  RSA68629  Calochortus splendens Frank W. Peirson 1923-5-5 4097 Orange Divide 1 mile east of El Modena. Comment
  SEINET7067520  Calochortus striatus A. G. Vestal 1947-6-12 s.n. Orange Along a tributary of Arroyo Trabuco. Trabuco Creek. Coordinate datum: NAD27. UTM Zone 11, 444413mE, 3723361mN. Comment
  NY1104587  Calochortus weedii var. intermedius J. T. Howell 1927-6-22 2572 Orange On N side of Santa Ana Canon [Santa Ana Canyon] 244 Comment
  RSA0013582  Calochortus weedii var. intermedius D. E. Bramlet 2008-5-28 4283 Orange Bee Cyn., Bowerman landfill site, 468m S Bee Cyn access road & 434m W of the active landfill. Comment
  RSA0135555  Calochortus weedii var. intermedius David E. Bramlet 2004-6-3 3596 Orange Peninsular Ranges; Santa Ana Mountains region: Tributary to Williams Cyn, 610m SW of Williams Cyn., & 122mW of the existing access road. 494 Comment
  RSA588720  Calochortus weedii var. intermedius Fred M. Roberts, D. Bontrager 1990-6-5 4676 Orange Rancho Mission Viejo: Lower Canada Gobernidora, ca. 3.1 km W Point Rancho Survey Marker. 122 Comment
  RSA588986  Calochortus weedii var. intermedius D. E. Bramlet 1994-6-23 2390 Orange San Joaquin Hills. On ridgetop above Upper Shady Canyon. The site is located 640 m N of the Shady-Camarillo Cyn. Road junction and 1.5 km West of Laguna Cyn. Road. 232 Comment
  RSA649066  Calochortus weedii var. intermedius D. E. Bramlet 2000-6-27 3064 Orange Fremont Canyon ridge road at crossing of Edison transmissionlines. NE of the old mine site, S of junction with Blind Canyon access road. 482 Comment
  RSA749648  Calochortus weedii var. intermedius D. E. Bramlet 2008-6-3 4288 Orange Upper Borrego Cyn, 215 SE of the access road and 1.35km west of Santiago Cyn Rd 435 Comment
  SD134560  Calochortus weedii var. intermedius Craig Reiser 1992-6-12 Orange Laguna Niguel, west-facing slope 100 yards north of northeast corner of intersection of Crown Valley Parkway and Pacific Island Drive. Openings in chaparral. (IPB 3/08) Comment
  UCR208444  Calochortus weedii var. intermedius R. E. Riefner Jr. 2008-6-5 08- 146 Orange South Coast, near city of Orange, west side of Hicks Haul Road, Rattlesnake Canyon southwest of the asphalt plant; Irvine Ranch Reserve, Management Area 6 Comment
  UCR43238  Calochortus weedii var. intermedius Kathy Harper 1986-6-7 s.n. Orange Santa Ana Mtns., Modjeska Canyon Road just below Tucker Wildlife Sanctuary Comment
  RSA690976  Calochortus weedii var. weedii Scott D. White, Michael Honer 2003-5-29 9426 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
  UCR194552  Calycadenia tenella A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35323 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
  RSA696924  Calycadenia tenella Dorothy Parsons 1932-5-3 s.n. Orange Irvine Park. Comment
  RSA92227  Calycadenia tenella F. W. Peirson 1922-5-18 1353 Orange Santa Ana River 122 Comment
  CSUSB667  Calystegia macrostegia R. P. Sunderman 1968-5-11 Orange Beach just south of Corona del Mar Comment
  SD255709  Calystegia macrostegia D. E. Bramlet 2008-3-26 4121 Orange Santa Ana Mountains; Bee Canyon, Bowerman landfill site; 202 m south of the Bee Canyon access road and 151 m west of the active landfill entrance. 295 Comment
  UCR109765  Calystegia macrostegia R. D. Goeden, Don W. Ricker 1965-6-21 s.n. Orange Dana Point 61 Comment
  UCR266301  Calystegia macrostegia D. E. Bramlet 2008-3-26 4121 Orange Peninsular Range; Santa Ana Mountains, Bee Canyon, Bowerman landfill site. 202 m south of the Bee Canyon access road and 151 m west of the active landfill entrance 295 Comment
  SEINET12343666  Calystegia macrostegia J. F. Bright, Wyman, C. 1933-3-5 8014 Orange Santa Anna foothills Comment
  IRVC987  Calystegia macrostegia subsp. cyclostegia M. Savage 1965-3-27 Orange Corona del Mar. Newport Beach Comment
  UCR281536  Calystegia macrostegia subsp. cyclostegia Mitch Provance, Jeremiah George 2017-3-20 317- 124 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
  UCR4053  Calystegia macrostegia subsp. cyclostegia Carole Sims 1965-3-28 s.n. Orange South Coastal Plains, 100 yards from Pacific Coast Highway on Salt Creek Road toward the beach. Between South Laguna and Dana Point 18 Comment
  RSA394876  Calystegia macrostegia subsp. intermedia M. B. Dunkle 1933-4-9 3283 Orange Dana Point. Comment
  RSA647894  Calystegia macrostegia subsp. intermedia Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-15 23 Orange 1/2 mile south of Chino Hills State Park. By a seasonal tributary to the Santa Ana River. 167 Comment
  CSUSB669  Calystegia macrostegia subsp. longiloba Donna C. Stonewall 1966-4-8 23 Orange Modjeska Canyon Modjeska Canyon Road, Modjeska Canyon 365 Comment
  POM311831  Calystegia macrostegia subsp. macrostegia E. W. Lathrop 1958-4-2 126 Orange Salt Creek Beach, 5-10 miles S. of laguna on Hwy. 101. 15 Comment
  LA50071  Calystegia macrostegia subsp. tenuifolia W. Pequegnat; 1937-8-31 99 Orange Santa Ana Mts 761 Comment
  RSA697156  Calystegia occidentalis subsp. occidentalis Kenneth Beard s.n. Orange Between Irvine & S.J. Capistrano. Comment
  POM201723  Calystegia sepium subsp. limnophila L. M. Booth 1932-6-28 1214 Orange Bolsa Chica Comment
  RSA5801  Camissonia bistorta Carl B. Wolf 1932-6-28 s.n. Orange Cypress, Bryant Ranch near Long Beach, about middle of western boundary of 4 acre Valencia Orange Grove at Bryant Avenue and Hansen Road. 9 Comment
  RSA254974  Camissonia cheiranthifolia subsp. suffruticosa C. W. Tilforth 1975-3-9 1039 Orange Salt water marsh at north-east shoreline of Upper Bay, Newport Beach. Comment
  POM21182  Camissonia intermedia Helen D. Geis 1902-03 s.n. Orange Santiago Creek bed. Comment
  RSA680535  Camissonia intermedia Scott D. White 2003-3-21 8826 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  UC942888  Camissoniopsis bistorta Lewis S. Rose 1949-4-18 49050 Orange sea-bluffs Dana Point Comment
  RSA0119598  Camissoniopsis bistorta Lyman Benson 1946-4-27 12048 Orange Corona del Mar. Drainage area: Pacific Ocean. 15 Comment
  SBBG40397  Camissoniopsis bistorta J. Ingram 1960-3-14 244 Orange La Palma Ave, ca. 2 blocks E of Knotts Berry Farm, Buena Park Comment
  SD181437  Camissoniopsis cheiranthifolia subsp. suffruticosa Valeri Soza, Kevin Clark, et al. 2001-4-4 1111 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Reguge. 3 Comment
  UC523554  Camissoniopsis cheiranthifolia subsp. suffruticosa David D. Keck 1933-9-21 2523 Orange dunes about town Sunset Beach Comment
  CAS-BOT-BC37125  Capsella bursa-pastoris Ira L. Wiggins 1966-2-5 20422 Orange Fairgrounds, Costa Mesa. Comment
  LA204271  Cardamine californica O. A. Plunkett; 1939-2-18 sn Orange 15 mi. E of Capistrano Comment
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Nov 15 2013
  OBI6109  Cardamine californica Carl B. Wolf 1931-3-6 1851 Orange Trabuco camp ground, Trabuco cyn, W slope of the Santa Ana Mts 610 Comment
  UCR241061  Cardamine californica Dick Newell, Don Millar 2013-2-5 313 Orange Peninsular Range; Santa Ana Mtns., mouth of Fremont Canyon at mouth, 1/2 mi. NE of Irvine Dam spillway 213 Comment
  POM8092  Cardamine californica var. integrifolia P. A. Munz, R. D. Harwood 1920-4-24 3740 Orange Santa Ana Mountains, Sierra [Freemont] Canyon 366 Comment
  RSA484624  Cardamine californica var. integrifolia E. Crow 1929-4-9 305 Orange Corona Skyline road, Santa Ana Mts. Comment
  UC1543082  Cardionema ramosissimum Donald G. Nelson 1935-6-27 324 Orange s. of Corona del Mar (s. of mouth of Newport Bay) Comment
  SD227731  Carduus pycnocephalus Scott D. White, Brian Leatherman 1997-6-12 5330 Orange Santa Ana Mtn. foothills. East of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 I E of I-15 / Hwy 74 jtn. 45 Comment
  UCR210292  Carex A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37193 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hangmans Tree Canyon 379 Comment
  CAS-BOT-BC118484  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Unspecified Comment
  CAS-BOT-BC118489  Carex praegracilis Helen D. Geis 1902-4-1 504 Orange Unspecified Comment
  CAS-BOT-BC118499  Carex praegracilis Helen D. Geis 1902-4-1 562 Orange Near Santa Ana Comment
  POM202036  Carex praegracilis L. M. Booth 1932-7-1 1234 Orange Anaheim Marsh Comment
  RSA594884  Carex praegracilis Fred M. Roberts, D. Stadlander, R. Vizgirdas 1992-4-24 4839 Orange El Toro Marine Base: just west of Borrego Wash, 2.7 kilometers SE Lambert Reservoir dam. 171 Comment
  RSA0026256  Carex spissa Fred M. Roberts 2013-6-12 7794 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
  RSA737489  Carex triquetra D. E. Bramlet 2008-5-9 4264 Orange Ridgeline between the upper two tributaries of Wier Cyn. 1.2km east of S. Serrano Ave & 1.3km west of Gypsum Cyn. 330 Comment
  UCSB52779  Carex tumulicola Boutin, F. 1967-4-23 Orange San Clemente Island: E side of island; next major drainageway and canyon SE of Lemon Tank; at seasonal pool Comment
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Dec 13 2020
  UCR100457  Carpobrotus chilensis B. G. Pitzer 1996-4-30 2768 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  SEINET10447228  Carpobrotus chilensis Charlene A. Bennett 1976-7-22 Bennett 444 Orange Cultivated and native plants collected around the San Clemente Beach area. 3 Comment
  RSA0037204  Carthamus baeticus Darren Day, Hal Willis 1984-5-20 035 Orange Growing on the east side of Laguna Canyon Rd. as you are traveling towards the city of Laguna Beach. This location approximately 5.2 miles out of town. Comment
  CDA6922  Carthamus creticus E. Dudley 1957-6-17 Orange 0 Comment
  JEPS89156  Castilleja affinis Rimo Bacigalupi, and L. Heckard 1962-3-25 8383 Orange 3.5 mi e El Modeno (near Handy Creek, on road to Irvine County Park) Comment
  RSA425876  Castilleja affinis Albert J. Perkins 1909-3-1 13722 Orange Orange Co Park. Comment
  RSA0012751  Castilleja affinis subsp. affinis Fred M. Roberts 2012-5-10 7576 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
  UCR150921  Castilleja affinis subsp. affinis Valerie Soza, LeRoy Gross 1999-6-7 480 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 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
  JEPS18961  Castilleja exserta subsp. exserta Rimo Bacigalupi with Francia Chisaki 1957-4-3 5787 Orange 6 mi s Irvine (along U.S. Hwy 101) 121 Comment
  RSA789224  Castilleja exserta subsp. exserta Naomi Fraga 2009-5-11 2717 Orange San Juan loop trail, Cleveland National Forest just west of Sugarloaf Spur Trail. 912 Comment
  UCSB47597  Castilleja exserta subsp. exserta Roberts, Fred 1980-5-3 Orange 0.1km NE Falcon Group Camp; Santa Ana Mtns 1012 Comment
  RSA278316  Castilleja foliolosa C. W. Tilforth, Walter Wisura 1979-5-23 1807 Orange Mouth of Aliso Canyon, south Laguna. 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
  SD181334  Castilleja foliolosa Valeria Soza, LeRoy Gross 1999-6-10 520 Orange Santa Ana Mountains; southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road, near ridgetop 1554 Comment
  POM18127  Castilleja minor subsp. spiralis Philip A. Munz 1923-9-7 7737 Orange Santa Ana Mountains: on trail from Holy Jim Canyon to Santiago Peak 1220 Comment
  RSA701803  Castilleja minor subsp. spiralis Fred M. Roberts 1999-7-22 5251 Orange Lomas de Santiago: Lomas Ridge, tributary to Limestone Canyon at Dripping Springs. Limestone Wilderness Park. 415 Comment
  RSA0045577  Castilleja parviflora Minor Warne 1934-03 s.n. Orange Gypsum Canyon. Comment
  RSA798095  Castilleja stenantha Robert F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49584 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  RSA696336  Catalpa hybrida Marjorie Moody 1947-05 s.n. Orange No. Main St., Santa Ana, California. Comment
  RSA598022  Caulanthus heterophyllus D. Bramlet 1994-4-30 2376 Orange San Juaquin Hills, on ridgeline above Camarillo canyon, beside the Camarillo Spur (E side) road. The site if located 1.5km W of Laguna Canyon, 198m NE of the Shady Camarillo Canyon road jct. Comment
  RSA0029943  Ceanothus crassifolius Fred M. Roberts, Sandy Leatherman 2013-2-13 7721 Orange Santa Ana Mountains: Ridge south of central Santiago Canyon, near Joplin Trail, 3.7 km SE Modjeska (town). 800 Comment
  RSA14727  Ceanothus crassifolius E. R. Johnson 1935-2-21 s.n. Orange Santa Ana River Bottom. Rancho Santa Ana. Comment
  RSA733939  Ceanothus crassifolius R. H. McArthur 1934-2-10 s.n. Orange Santiago Canyon above Modjeska Comment
  RSA12375  Ceanothus megacarpus Carl B. Wolf 1934-3-21 5577 Orange Santa Ana River, Santa Ana Canyon, 1/2 mi. S.W. of Mexican Houses, Rancho Santa Ana. 122 Comment
  CAS-BOT-BC50508  Ceanothus megacarpus var. megacarpus John Thomas Howell 1927-7-24 2828 Orange Claymine Canyon, n. Santa Ana Mts. 152 Comment
  RSA16340  Ceanothus oliganthus Percy C. Everett 1935-6-18 7194 Orange Santa Ana Mts., Main Divide Motorway to Santiago Pk., 1 mi. from Ortega Highway. 732 Comment
  POM98118  Ceanothus oliganthus F. W. Peirson 1925-4-11 5735 Orange slope above mill, in Silverado Canyon, Santa Ana Mountains. 915 Comment
  CAS-BOT-BC63561  Ceanothus oliganthus var. orcuttii Carl B. Wolf 1941-8-15 11158 Orange Santa Ana Mts. along main divide motorway just no. of head of Trabuco truck trail. 1219 Comment
  SBBG52715  Ceanothus oliganthus var. orcuttii C. Davidson 1977-5-18 5599 Orange Pleasant Pk, (on county line) Comment
  SEINET10634137  Ceanothus palmeri Greg Gust, Leith Nye 2005-3-12 Gust 563 Orange Cleveland National Forest, on Hwy 74 ca. 0.5 m W of county boundary with Riverside at a pullout. 401 Comment
  SD95148  Ceanothus papillosus var. roweanus Jack L. Reveal 1975-4-29 1718 Orange South Main Divide Road, head of main Street Canyon 1200 Comment
  UCD169753  Ceanothus papillosus var. roweanus R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49697 Orange Northern Santa Ana Mountains: Sierra Peak. 899 Comment
  POM305816  Ceanothus spinosus Henry J. Ramsey, Henry J. Ramsey 1937-4-2 1043 Orange Capistrano Canyon. Comment
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Dec 17 2011
  RSA542410  Ceanothus spinosus Fred M. Roberts 1988-3-15 3855 Orange Rancho Mission Viejo: Verdugo Canyon, 0.8 km SE Lucas Survey Mark. 247 Comment
  SDSU10426  Ceanothus spinosus D. F. Howe 1947-4-4 1545 Orange Santa Ana Mtns. Comment
  UC1071372  Ceanothus spinosus A. Lewis Apr 1934 383 Orange Santiago Canyon Cleveland National Forest, Corona Quad. Comment
  UC1071388  Ceanothus spinosus A. E. Wieslander 1934-3-29 448 Orange San Juan Creek 304 Comment
  PASA2518  Ceanothus tomentosus Frank W. Peirson 1922-5-19 Orange Small canyon heading eastward from the Santa Ana Canyon at 400 ft. Comment
  LA97592  Ceanothus verrucosus D. S. Verity; Fred Lang 1972-1-7 sn Orange hills behind South Laguna Comment
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Nov 26 2016
  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
  RSA697730  Cenchrus spinifex J. Vlahos 1933-10-5 s.n. Orange Santa Ana River Bed by 17th St. bridge. Comment
  RSA752850  Centaurea melitensis Fred M. Roberts 2009-4-21 7154 Orange Dana Point Headlands: southern cliffs, 0.7 km W Marine Institute at Dana Point Harbor. CNLM Dana Point Preserve. 3 Comment
  SEINET179460  Centaurea melitensis L. M. Booth 1932-5-26 1117 Orange Newport Bay Comment
  CAS-BOT-BC277103  Centaurea melitensis Ira L. Wiggins 1966-5-4 20659 Orange Along Associated Road near Imperial Highway Comment
  RSA226629  Centaurea melitensis Christopher Davidson, Gerald L. Benny 1971-6-15 1549 Orange Brea Canyon, 0.5 mi. N of Central Ave, along Brea Cr, near bridge. Comment
  IRVC27937  Centaurea repens A. C. Sanders, Mark A. Elvin 2003-10-12 27321 Orange Irvine; UCI Arboretum, UCI campus near intersection of Jamboree Blvd and Campus Dr. Southern Coastal 15 Comment
  POM13256  Centaurea repens E. Johnson 1922-6-12 s.n. Orange Greenville. Comment
  CAS-BOT-BC288843  Centromadia parryi subsp. australis David D. Keck 1933-9-17 2524 Orange Westminster Comment
  JEPS38140  Centromadia parryi subsp. australis L. M. Booth 1932-6-7 1169 Orange Newport Bay Comment
  RSA758074  Centromadia parryi subsp. australis D. E. Bramlet 2008-9-17 4306 Orange Upper Newport Bay, West Mesa, 76m E Irvine Ave. & 305m S of University Dr. 20 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
  UCSB72266  Cerastium glomeratum Roberts, Fred 1980-5-3 Orange Santa Ana Mtns.; San Juan Canyon, near mouth of Viejo Cyn.: below Rte. 74; 2.5 km. by road ENE San Juan Guard Station; 0.5 km. WSW Bm 1100 288 Comment
  CAS-BOT-BC142076  Cercocarpus betuloides Peter H. Raven 1962-5-18 17753 Orange Main Divide Truck Trail at saddle about 1 mile north of Santiago Peak - Santa Ana Mountains 1493 Comment
  RSA101785  Cercocarpus betuloides R. Weatherby 1950-2-25 1025 Orange Harding Canyon, Santa Ana Mountains. 579 Comment
  UCR100180  Cercocarpus betuloides Scott D. White 1996-12-20 4637 Orange Santa Ana Mountains, above Modjeska Canyon; proposed water tank site 488 Comment
  SBBG128666  Cercocarpus betuloides var. betuloides R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49704 Orange Sierra Peak; Santa Ana Mtns 900 Comment
  CAS-BOT-BC279500  Chaenactis artemisiifolia L. R. Abrams 1901-6-15 1808 Orange Trabuco Canon [Canyon] Comment
  POM351653  Chaenactis artemisiifolia M. B. Dunkle 1934-6-18 3978 Orange San Juan Canyon 457 Comment
  RSA16347  Chaenactis artemisiifolia Percy C. Everett 1935-6-18 7186 Orange Santa Ana Mts., Main Divide Motorway to Santiago Pk., 1 mi. from Ortega Highway. 732 Comment
  UCR193348  Chaenactis artemisiifolia A. C. Sanders 2008-5-28 35437 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  UCR193822  Chaenactis artemisiifolia A. C. Sanders, Fred M. Roberts 2008-7-16 35867 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 370 Comment
  UCSB48214  Chaenactis glabriuscula Roberts, Fred 1981-5-3 Orange Santa Ana Mtns.; Hot Springs Canyon, 0.8 km. by road N of San Juan Guard Station 256 Comment
  RSA695673  Chaenactis glabriuscula L. C. Hull 1934-4-29 s.n Orange Trabuco Canyon Comment
  HSC5295  Chaenactis glabriuscula var. glabriuscula J. W. Johnson 1961-3-29 Orange Newport Beach Comment
  LA203102  Chaenactis glabriuscula var. glabriuscula Lawrence M. Booth; 1932-5-18 1056 Orange Newport Bay Comment
  POM351784  Chaenactis glabriuscula var. glabriuscula M. B. Dunkle 1935-3-3 4350 Orange San Juan Canyon. 457 Comment
  RSA749520  Chaenactis glabriuscula var. glabriuscula Fred M. Roberts, David E. Bramlet, Megan Lulow 2008-4-4 6845 Orange Lomas de Santiago: Loma Ridge, along East Lomas Ridge Rd., 0.7 km E Bee Peak, Irvine Ranch Conservancy. 509 Comment
  UC149240  Chaenactis glabriuscula var. glabriuscula LeRoy Abrams 1903-4-13 3254 Orange Buena Park Comment
  POM6049  Chaenactis glabriuscula var. lanosa L. R. Abrams 1903-4-13 3254 Orange Buena Park 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
  HSC25233  Chamaesyce albomarginata R. W. Spjut 1972-2-22 2231 Orange Santa Ana Mtns., Cleveland National Forest, along Hwy. 74 305 Comment
  RSA653184  Chamaesyce albomarginata David Barrios 1991-5-8 28 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 365 Comment
  RSA542538  Chamaesyce polycarpa var. polycarpa Fred M. Roberts 1988-5-13 3968 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Canyon near spring, 2.3 km NW Bolero Lookout. 439 Comment
  RSA602209  Chamaesyce serpillifolia L. C. Wheeler 1945-5-20 6046 Orange Rancho Santa Ana Botanic Garden: In front of assembly hall. Comment
  IRVC26723  Chasmanthe aethiopica Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3164 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA685682  Cheilanthes clevelandii Norman C. Cooper 1944-6-4 1339 Orange San Juan Canyon, lower camp ground. 457 Comment
  RSA797473  Cheilanthes clevelandii R. F. Thorne 1977-11-21 49986 Orange Santa Ana Mountains: tributary canyon to San Juan Canyon about 2 miles above San Juan Fire Station Comment
  RSA685783  Cheilanthes newberryi M. B. Dunkle 1934-6-18 3981 Orange San Juan Canyon; Southern Coastal 305 Comment
  RSA685771  Cheilanthes newberryi T. R. Pray 1961-2-14 1825 Orange San Juan Canyon along Ortega Hwy, near bridge just west of Cleveland National Forest Comment
  CAS-BOT-BC426293  Chenopodium album Ira L. Wiggins 1966-5-25 20664 Orange Parkway along south side of Nutwood Lane, margin of CSCF campus, Fullerton Comment
  POM225561  Chenopodium album P. A. Munz 1936-6-30 14175 Orange 5 miles south of Garden Grove. Comment
  RSA184162  Chenopodium album I. L. Wiggins 1966-5-25 20664 Orange Parkway along south side of Nutwood Lane, margin of CSCF campus, Fullerton. Comment
  UC536960  Chenopodium ambrosioides Lawrence M. Booth 1932-7-25 1312 Orange 1 1/2 mi from ocean; Santa Ana River Comment
  RSA265  Chenopodium ambrosioides var. ambrosioides J. T. Howell 1927-7-18 430 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  UCR210369  Chenopodium berlandieri T. B. Salvato, Billy Deane 2006-10-16 1939 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  POM18120  Chenopodium berlandieri var. sinuatum P. A. Munz 1923-9-7 7746 Orange Santiago Peak. 1723 Comment
  POM183953  Chenopodium californicum P. A. Munz 1932-3-29 12186 Orange Costa Mesa. Comment
  RSA747591  Chenopodium californicum Fred M. Roberts 2000-5-5 5319 Orange Lomas de Santiago: Loma Ridge, Agua Chinon Cyn., north slope, 1.6 kmSSW Bolero Spr. and 2.6 km W Bolero Lookout. 308 Comment
  RSA747623  Chenopodium californicum Fred M. Roberts 2008-4-16 6909 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8km W Marine Institute, Dana Point Harbor. 45 Comment
  UCR192453  Chenopodium californicum A. C. Sanders, Fred M. Roberts 2008-3-25 34577 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
  RSA625806  Chenopodium californicum Scott D. White, Noel Davis 1998-5-21 6546 Orange Santa Ana Mountains, Mission Viejo Area: Aliso Creek watershed, east of El Toro Road just N of junction w/ Valley Vista Way., 33 deg 40.5 N, 117 deg 37 W. 305 Comment
  RSA234524  Chenopodium macrospermum var. farinosum James Henrickson 1970-9-5 5346 Orange 3 miles NW of Huntinton Beach, at southern margin of Bolsa Chica Mesa. 0 Comment
  RSA696277  Chenopodium multifidum Keith E. Hoffmaster 1932-8-26 s.n. Orange Santa Ana. Comment
  CDA20835  Chenopodium murale P. Akers 2006-3-25 PA 9 -06 Orange Peninsular Ranges; Yorba Linda. Santa Ana River S of La Palma Dr, 0.6-0.9 mi E of Yorba Linda Dr. 121 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
  IRVC399  Chenopodium murale L. Lewton 1965-4-19 Orange Corona del Mar High School. Newport Beach Comment
  RSA165143  Chenopodium murale Mark Parratt 1962-4-11 139 Orange Corona del Mar beach head. 4 Comment
  RSA731958  Chenopodium murale Fred M. Roberts, Sandy Leatherman 2007-11-27 6698 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. ca. 0.3 km S Fairmont Blvd. 118 Comment
  RSA751792  Chenopodium murale A. C. Sanders, Fred M. Roberts 2008-7-3 35686 Orange upper Weir Canyon, along Windy Ridge Rd. at huge sandstone boulder (visible on Google Earth), 1.3 mi. SE of Walnut Canyon Reservoir 314 Comment
  UCR222390  Chenopodium murale Mark A. Elvin 2003-1-26 2244 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  RSA573428  Chenopodium murale Steve Boyd, Timothy S. Ross 1994-9-14 8347 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
  RSA650315  Chenopodium murale Norman Willis 1948-2-8 s.n. Orange 2 miles E of Orange 60 Comment
  CLARK-A1528-977  Chenopodium rubrum Patricia A. Andrews 1975-6-26 Orange Capistrano Bay Beach 9 Comment
  CDA32185  Chenopodium strictum var. glaucophyllum T. McCrainie, Mark A. Elvin 2006-9-23 3 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
  RSA655025  Chorizanthe procumbens D. E. Bramlet 1994-6-23 s.n. Orange San Joaquin Hills. ''Pass area'' between Little Sycamore and Camarillo Canyons. The site is 945m of Camarillo Canyon Road and 5 m west of the existing dirt road. 122 Comment
  UCR37796  Chorizanthe procumbens 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
  RSA392687  Chorizanthe staticoides M. B. Dunkle 1938-6-23 5378 Orange San Juan Canyon. Comment
  RSA548860  Chorizanthe staticoides Coleen Cory 1990-5-24 s.n. Orange Rancho Mission Viejo: Trampas Canyon, c.a. 1.5km S Hwy 74 (Township 8 S, Range 7 W, sec. 2). 150 Comment
  UC1618108  Chorizanthe staticoides Donald G. Nelson 1936-6-5 433 Orange Hills NE of Fullerton 91 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
  UCR241918  Chorizanthe staticoides subsp. chrysacantha Fred M. Roberts 2012-5-10 7566 Orange Peninsular Ranges; Coastal Foothills, San Joaquin Hills, Buck Gully, south tributary, north slope Pelican Hill, just north of Pelican Hills Drive, 0.7 km north of Pelican Hill summit 154 Comment
  RSA818  Cichorium intybus J. T. Howell 1927-10-29 786 Orange Bryant Ranch near Long Beach. 15 Comment
  POM352203  Cirsium occidentale var. californicum M. B. Dunkle 1933-5-30 3580 Orange Santa Ana Canyon. Comment
  RSA0059656  Cirsium occidentale var. occidentale Fred M. Roberts, David E. Bramlet 2003-6-6 5907 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, west slopes of Cristianitos Canyon, 0.86 km SSW Gato Gate and 0.39 km W of Cristianitos Road. 149 Comment
  RSA752816  Cirsium vulgare A. C. Sanders, Fred M. Roberts 2008-8-7 36000 Orange Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  UCR193012  Cirsium vulgare A. C. Sanders, Fred M. Roberts 2008-6-17 35459 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  RSA67766  Clarkia bottae G. R. Campbell 1951-5-30 16078 Orange San Juan Canyon, Ortega Hwy, 4 mi. inside west border of Cleveland National Forest 152 Comment
  RSA493805  Clarkia dudleyana Jeri Hirshberg 1988-6-2 s.n. Orange Upper Gypsum Canyon. 274 Comment
  SEINET8726152 Image available Clarkia elegans Jean Coulson 1959-1 s.n. Orange Disneyland, Orange County, California. Found in painted Desert at entrance to Rainbow mines. Comment
  RSA751313  Clarkia purpurea A. C. Sanders, Fred M. Roberts 2008-5-6 35275 Orange Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 366 Comment
  RSA789218  Clarkia purpurea subsp. quadrivulnera Naomi S. Fraga, Duncan S. Bell 2009-5-11 2724 Orange Chiquita Trail 762 Comment
  UCR220083  Claytonia parviflora Dick Newell, Don Millar 2010-3-2 005 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Limestone Canyon Rd. 50 m SE of Sandtrap cutoff, 0.2 mi. west of Santiago Canyon Rd. 294 Comment
  CAS-BOT-BC439945  Claytonia perfoliata subsp. mexicana C. B. Wolf 1931-3-6 1853 Orange Trabuco Camp Ground, Trabuco Canyon, west slope of the Santa Ana Mts. 609 Comment
  CAS-BOT-BC439946  Claytonia perfoliata subsp. mexicana Helen D. Geis 1904-4-1 742 Orange Silverado Canon [Canyon], Santa Ana Mountains Comment
  RSA2076  Claytonia perfoliata subsp. mexicana C. B. Wolf 1931-3-6 1853 Orange Trabuco Canyon at Trabuco Camp Grounds, west slope of Santa Ana Mountains. 610 Comment
  JEPS43343  Claytonia perfoliata subsp. perfoliata Alice King Apr 1908 Orange canyon above Orange County Park (Santa Ana); Santa Ana Comment
  UC484254  Claytonia perfoliata subsp. perfoliata C. B. Wolf 1931-3-6 Orange Trabuco Campgrounds Santa Clara Mts., Trabuco Canyon (Trabuco Canyon, w slope of Santa Ana Mts) 609 Comment
  OBI30216  Claytonia perfoliata subsp. perfoliata L. Fountain 1966-3-23 52 Orange Silverado Cyn at the end of the pavement Comment
  CAS-BOT-BC91328  Clematis lasiantha P. C. Everett 1935-6-18 7218 Orange Santa Ana Mountains, summit of Santiago Peak. 1731 Comment
  RSA663157  Clematis lasiantha R. E. Riefner 2000-6-1 20 -455 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  CAS-BOT-BC92555  Clematis ligusticifolia John Thomas Howell 1927-8-13 2984 Orange Santa Ana River bottom. Santa Ana Canon [Canyon]. 152 Comment
  POM188  Clematis ligusticifolia E. A. Zumbro 1902-1 s.n. Orange [Unspecified] Comment
  HSC25249  Clematis pauciflora Richard Spjut 1972-2-21 2216 Orange Santa Ana Mtns., Cleveland National Forest 305 Comment
  POM6466  Clematis pauciflora P. A. Munz, L. T. Street, G. Williams 1919-5-3 2651 Orange Santa Ana River Canyon. Comment
  RSA789221  Clinopodium chandleri Naomi S. Fraga, Duncan S. Bell 2009-5-11 2721 Orange Chiquita Trail 762 Comment
  RSA77080  Cneoridium dumosum F. W. Peirson 1919-11-18 2031 Orange South of Arch Beach, Comment
  UCR191230  Collinsia concolor A. C. Sanders, Fred M. Roberts 2008-4-22 35026 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  POM8762  Collinsia heterophylla Philip A. Munz, R. D. Harwood 1920-4-24 3747 Orange Santa Ana Mountains, Sierra [Freemont] Canyon. 366 Comment
  RSA34587  Collinsia heterophylla N. C. Cooper 1944-6-4 1361 Orange San Juan Canyon, lower camp ground. 457 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
  RSA305753  Collinsia heterophylla James R. Shevock 1313 Orange Newport Beach Bay. 11 Comment
  RSA408307  Collinsia heterophylla Anstruther Davidson 1920-6-1 3371 Orange Languna Beach Comment
  CAS-BOT-BC402182  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
  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
  IRVC21613  Comarostaphylis diversifolia var. diversifolia Fred M. Roberts 1984-3-31 1317 Orange Niguel Hill, 1.0km ENE Aliso Peak, 2.1km SW Alicia Fire Station, Laguna Niguel 275 Comment
  IRVC23323  Conium maculatum Fred M. Roberts 1985-7-23 2078 Orange Irvine; San Diego Creek at Jeffrey Rd. bridge. Southern Coastal 35 Comment
  IRVC3696  Conium maculatum D. W. Bryant 1965-3-28 s.n. Orange Laguna Canyon; Laguna Canyon Rd. Southern Coastal Comment
  RSA751187  Conium maculatum A. C. Sanders, Fred M. Roberts 2008-6-17 35455 Orange Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  IRVC26825  Conium maculatum S. D. White, Brian Leatherman 1997-6-12 5310 Orange E of Dan Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site (ca. 2 to 4 miles E of I-5/Hwy 74 jctn). Southern Coastal 46 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
  IRVC973  Convolvulus arvensis A. Weir 1965-5-9 Orange Mar Vista, east bluff. Newport Beach Comment
  SD143550  Convolvulus arvensis R. D. Goeden, D. W. Ricker 1965-6-15 12481 UC Orange Northwest of El Toro: Tustin Township, near Borrego Canyon Wash, southeast edge of El Toro Marine Corps Air Station. 106 Comment
  UCR16173  Convolvulus arvensis Art Dawson 1968-5-4 s.n. Orange Rancho Mission Viejo, Ortega Hwy near San Juan Capistrano, 0.5 mi. north of Ranch Headquarters Comment
  RSA0013948  Convolvulus simulans Fred M. Roberts 2008-4-24 6927 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. 172 Comment
  RSA718958  Conyza bonariensis Fred M. Roberts, Robert L. Allen 2006-10-8 6422 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
  IRVC9121  Conyza canadensis B. T. Gittins 1966-9-26 1626 Orange 1613 Sandalwood St.; cultivated yard. Costa Mesa Comment
  RSA731653  Conyza canadensis Fred M. Roberts 2007-10-29 6626 Orange Laguna Beach: Temple Hill, Nyes Place, ca. 0.2 km S Moulton Meadows Park. 232 Comment
  IRVC23904  Conyza coulteri Fred M. Roberts 1985-8-19 2127 Orange Mission Viejo: lateral to Engilish Canyon along Vista de Lago Drive; 3.4km ENE El Toro Fire Station. Southern Coastal 218 Comment
  RSA782120  Conyza coulteri T. B. Salvato 2010-10-27 5139 Orange Dana Point Headlands, Hilltop Park, north of Scenic Dr. and west of Green Lantern St., overlooking Dana Point Harbor 67 Comment
  UCR224167  Conyza coulteri Fred M. Roberts, Carol A. Roberts 2008-9-28 7111 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve near northeast Gate, 0.5 km west Marine Institute, Dana Point Harbor 75 Comment
  SEINET4675783  Cordylanthus maritimus Robert F. Thorne 1975-1 Orange 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-BC101293  Corethrogyne filaginifolia Carl B. Wolf 1933-8-24 5394 Orange Santa Ana Mts. Summit of Santiago Pk. 1731 Comment
  LA205799  Corethrogyne filaginifolia W. Pequegnat; 1937-9-1 sn Orange Santa Ana Mountains, Top of Horsethief Trail Comment
  POM193490  Corethrogyne filaginifolia Helen E. Sweet 1928-08 s.n. Orange Santiago Canyon. Comment
  POM201858  Corethrogyne filaginifolia L. M. Booth 1933-8-26 1385 Orange Newport Lagoon. Comment
  UC1119252  Corethrogyne filaginifolia A. Lewis 1934-4-1 402 Orange Arroyo Trabuco Corona Quadrangle Comment
  UCSB52401  Corethrogyne filaginifolia Roberts, Fred 1982-9-15 Orange Rancho Mission Viejo; Rte. 74, 6.6 km. by road ENE San Juan Capistrano; 0.9 km. Viejo Peak 93 Comment
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Jan 25 2020
  SD108850  Corethrogyne filaginifolia var. filaginifolia James Henrickson 1972-10-21 8066 Orange Newport Beach, south of Jamboree Road, east of Irvine Coast Country Club near U. C. Irvine. 45 Comment
  JEPS50151  Cornus sericea subsp. sericea Lawrence M. Booth 1932-7-19 1278 Orange Bolsas Creek Comment
  RSA528047  Cortaderia selloana A. C. Sanders 1990-10-6 10196 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Highway 1. 1 Comment
  RSA679093  Cosmos bipinnatus Fred M. Roberts 2003-7-24 5966 Orange San Juan Capistrono: San Juan Creek, c.a. 0.1 km NE La Novia Bridge. Along creek on cobbly sand of wash in open southern willow scrub and mulefat scrub. 27 Comment
  SEINET10541091  Cotoneaster pannosus Melvin L. Conrad, David B. Dunn 1973-6-13 Conrad 7125 Orange In vicinity of Laguna Beach. 152 Comment
  HSC5419  Cotula australis C. L. Hitchcock, C. V. Muhlick 1964-3-17 23067 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  CAS-BOT-BC287222  Cotula australis Ira L. Wiggins 1966-3-5 20504 Orange Along Highway S-18, about 4.5 miles E of Laguna Beach Comment
  RSA696049  Cotula coronopifolia Stephen Bruff s.n. Orange Lemon Heights Comment
  CAS-BOT-BC77624  Cotyledon Reid Moran 1993-6-30 31095 Orange South slope above 1500 Coast Highway, Newport Beach 15 Comment
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Dec 20 2019
  RSA751982  Crassula connata Fred M. Roberts 2008-3-27 6803 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  UCR215312  Crassula connata Fred M. Roberts 2008-3-27 6803 Orange South Coast, Dana Point; Dana Point Headlands, Center for Natural Lands Mgmt. Preserve near NE gate, 0.5 km west of Marine Institute, Dana Point Harbor 75 Comment
  RSA542643  Crassula connata var. erectoides Fred M. Roberts, Dar A. Roberts 1989-3-22 4219 Orange Aliso-Wood Canyons Regional Park: Wood Canyon, 3.6 km S Moulton Peak. 43 Comment
  JEPS43028  Cressa truxillensis L. M. Booth 1932-5-18 1052 Orange Newport Bay Comment
  POM6361  Cressa truxillensis P. A. Munz 1919-5-4 2687 Orange Laguna Comment
  SD143548  Cressa truxillensis R. D. Goeden, D. W. Ricker 1965-7-7 Orange Tustin Township near Peters Canyon Channel, east of Santa Ana Marine Corps Air Station 60 Comment
  UCR109780  Cressa truxillensis R. D. Goeden, Don W. Ricker 1965-7-7 s.n. Orange Tustin township, near Peters Canyon Channel, east of Santa Ana Marine Corps Air Station 61 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
  RSA0011252  Croton californicus Fred M. Roberts, Lee Ann Caranza 2006-10-25 6454 Orange Dana Point Headlands south of Margarite Drive, 0.6km W Marine Institute and 1km SW Cook Sch. 58 Comment
  RSA4829  Croton californicus James Snow 1932-1 s.n. Orange Bryant Ranch, near Long Beach. Station #1. Plant #3. 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
  CDA35289  Croton californicus Mackessy & Pope 1957-6-27 Orange Santa Ana riverbed. 0 Comment
  SEINET6971880  Cryptantha W. P. Vestal, A. G. Vestal 1955-3-24 3451 D Orange Trabuco Canyon, about 5 miles east of El Toro. Comment
  RSA640  Cryptantha clevelandii J. T. Howell 1928-2-25 837 Orange Near Bee Canyon, Rancho Santa Ana. 152 Comment
  RSA747713  Cryptantha clevelandii Fred M. Roberts 2008-3-19 6782 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8km W Marine Institute, Dana Point Harbor. 45 Comment
  RSA539422  Cryptantha clevelandii Fred M. Roberts, Karlin G. Marsh 1989-3-7 4194 Orange Lomas de Santiago: Loma Ridge, Hicks Canyon, 2.3km W Bee Survey Mark. 165 Comment
  IRVC15158  Cryptantha intermedia J. Schram 1965-5-9 Orange San Juan Capistrano Comment
  IRVC255  Cryptantha intermedia C. Hinesly Orange Trabuco Canyon Santa Ana Mountains Comment
  RSA680736  Cryptantha intermedia Scott D. White 2003-3-21 8824 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  UC1063976  Cryptantha intermedia A. Lewis 1934-3-1 386 Orange Borrego Canyon Corona Quad. 426 Comment
  PASA1983  Cryptantha intermedia Frank W. Peirson 1923-3-26 Orange Canada Salada. Near sea level Comment
  POM13831  Cryptantha microstachys P. A. Munz 1922-4-28 5042 Orange Leach Canyon, Santa Ana Mountains 670 Comment
  RSA542660  Cryptantha microstachys Fred M. Roberts 1988-4-10 3907 Orange Lomas De Santiago: Loma Ridge, 1.0 kilometer N Bolero Lookout. 415 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
  UCR191223  Cryptantha microstachys A. C. Sanders 2008-4-29 35127 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
  UCR191349  Cryptantha microstachys A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34630 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 290 Comment
  UCR77711  Cryptantha microstachys Steve Boyd, Orlando Mistretta 1991-5-9 6191 Orange Santa Ana Mtns, Crest of range at Oak Flat, SE of Sierra Peak, just west of Riverside County line. 854 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
  POM178580  Cryptantha racemosa Marcus E. Jones 1930-3-3 s.n. Orange Santa Ana Mountains. 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
  RSA394308  Cucurbita foetidissima F. R. Fosberg 1931-6-12 S- 5093 Orange Lower Santiago Can. Comment
  UCSB48207  Cucurbita foetidissima Roberts, Fred 1981-7-8 Orange Rancho Mission Viejo: Calif. Rte. 74, 5.2 km ENE San Juan Capistrano by road 100 Comment
  CAS-BOT-BC80568  Cupressus forbesii P. A. Munz; I. M. Johnston 1922-5-18 5566 Orange Santa Ana Mts. 457 Comment
  JEPS19317  Cupressus forbesii John Thomas Howell 1927-8-10 2983 A Orange w of Sierra Peak (at head of Claymine Canon); Santa Ana Mts., Claymine Canon 609 Comment
  POM17861  Cupressus forbesii Philip A. Munz 1923-7-8 7327 Orange Santa Ana River Canyon, 3 miles from county line. Comment
  RSA12376  Cupressus forbesii C. B. Wolf, E. R. Johnson 1934-3-21 5578 Orange Santa Ana River, Santa Ana Canyon, 1/2 mi. S.W. of Mexican Houses, Rancho Santa Ana. Altitude 400 ft. 122 Comment
  RSA14452  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
  RSA17652  Cupressus forbesii C. B. Wolf 1935-1-2 6279 Orange Slopes of Sierra Peak, west of Claymine Canyon, along road to Peak. 670 Comment
  RSA644959  Cupressus forbesii Richard E. Riefner 2000-1-18 20 -101 Orange NCCP North Ranch Policy Plan Area: Main Divide Road; top of Gypsum Canyon. 518 Comment
  UC401430  Cupressus forbesii J. G. Cooper 1872-5-20 Orange Santa Anna Mts. [Santa Ana ?] Comment
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Sep 16 2010
  UCR112935  Cupressus forbesii R. E. Riefner Jr. 2000-1-18 20- 101 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Main Divide Road, top of Gypsum Canyon at Windy Ridge 518 Comment
  CAS-BOT-BC80574  Cupressus forbesii Rimo Bacigalupi 1935-6-22 2354 Orange Head of Clay Mine Canyon on drainage of Santa Ana River, northern end of Santa Ana Mts. Comment
  RSA394863  Cuscuta salina Anstruther Davidson 1907-9-1 1772 Orange Newport Comment
  RSA750002  Cuscuta subinclusa A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35320 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  RSA0036642  Cuscuta subinclusa Robt. Allen 2007-8-11 s.n. Orange Peninsular Ranges; Santa Ana Mountains region: Western arm of Modjeska Peak, at junction of North Main Divide Road and road spur to the summit. 1531 Comment
  UCSB52888  Cuscuta subinclusa Roberts, Fred 1983-9-26 Orange Santa Ana Mtns.: Lion Canyon, Chiquito Basin Trail; 3.5 km. NNE Lower San Juan Picnic Ground; 4.2 km. SSE Los Pinos Peak 815 Comment
  CDA7766  Cyclospermum leptophyllum David Armstrong 2008-4-6 PDR# 1255936 Orange Orange, 2809 E. Hillside Ave. 0 Comment
  UCR48039  Cynara cardunculus Jack Easton 1987-4-21 s.n. Orange Southern Coast, Kain property, San Clemente, mouth of Trafalgar Canyon, just behind the beach 30 Comment
  HSC24269  Cynodon dactylon James Hendrickson 1970-7-25 5032 Orange 3.5 mi. NW of Huntington Beach on sandy margin of Bolsa Bay, ca. 3/4 mi. SE of Warner Ave. along Pacific Coast Hwy. 1 Comment
  UCR246515  Cynodon dactylon Fred M. Roberts 2013-5-30 7778 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
  OBI17023  Cyperus erythrorhizos Carl B. Wolf 1937-9-23 9366 Orange Rancho Santa Ana, Santa Ana Cyn 122 Comment
  RSA365080  Cyperus erythrorhizos Anstruther Davidson 1917-08 3267 Orange Near Laguna Beach. Comment
  RSA125600  Cyperus esculentus Peter H. Raven 1957-9-28 11398 Orange 1.1 miles south of Orange County line on US Highway 101. Comment
  UCR194990  Cyperus involucratus A. C. Sanders, Fred M. Roberts 2008-8-7 35999 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  UC472149  Cyperus laevigatus J. Ewan 1931-10-3 Orange below La Vida Soda Spring (Carbon Canyon); Carbon Canyon Comment
  UCR64632  Cyperus niger F. W. Peirson 1924-10-19 5231 Orange Wintersberg. Comment
  SD255032  Cyperus niger Robert F. Thorne 1977-11-21 49999 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs. Comment
  UCD170386  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-16 12- 5 Orange City of Newport Beach, Corona Del Mar, beach area west of Morning Canyon Road. 1 Comment
  UCR157694  Dactylis glomerata Adrian Wolf 1998-5-15 269 Orange South Coast, Lambert Reservoir, north of El Toro Marine Corps Air Station 134 Comment
  RSA483  Datisca glomerata J. T. Howell 1927-7-3 263 Orange Claymine Canyon near Sierra Peak. 305 Comment
  CDA1077  Datura stramonium D. G. Kelch 2006-12-9 6 .562 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  UCR154262  Datura stramonium Mark A. Elvin 2004-5-2 3417 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  RSA702205  Datura wrightii Fred M. Roberts, David E. Bramlet 2003-6-20 5920 Orange Rancho Mission Viejo; Donna O'Neil Land Conservancy tributary to Cristianitos Cyn, along Back Road, 1.4 km WNW Sycamore Gate. 189 Comment
  RSA734974  Datura wrightii A. C. Sanders, Fred M. Roberts 2008-6-17 35465 Orange Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  SD236432  Datura wrightii A. C. Sanders, Fred M. Roberts 2008-6-17 35520 Orange Peninsular Range; Santa Ana Mtns.: middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 224 Comment
  POM6363  Daucus pusillus P. A. Munz, L. T. Street, G. Williams 1919-5-3 2666 Orange Santa Ana River Canyon. Comment
  RSA470786  Daucus pusillus M. B. Dunkle 1933-4-9 3281 Orange Dana Point Comment
  RSA678736  Daucus pusillus Fred M. Roberts, Carol A. Roberts, Robert Allen 2003-5-11 5859 Orange Dana Point Headlands: hilltop, 0.6km SSW Richard Henry Dana School south of Pacific Coast Highway and north of Scenic Drive. 73 Comment
  RSA732273  Daucus pusillus A. C. Sanders 2008-4-29 35126 Orange 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
  UCD127408  Daucus pusillus Lawrence M. Booth 1932-5-12 1033 Orange Newport Bay. Comment
  CAS-BOT-BC299332  Deinandra fasciculata L. R. Abrams 1917-6-23 6568 Orange Balboa Comment
  UC729957  Deinandra fasciculata Carl B. Wolf 1932-7-2 3811 Orange opposite Olinda Pilgrim Church Valencia Ave.; Olinda Comment
  UC75961  Deinandra fasciculata E. A. Zumbro 1902-1-1 388 Orange Comment
  UCSB48381  Deinandra fasciculata Roberts, Fred 1982-5-22 Orange Laguna Niguel; Niguel Hill, just N of end of Pacific Island Dr., 1.6 km. ENE Aliso Peak 295 Comment
  UCSB56508  Delairea odorata Marsh, G.; Marsh, K. 1978-1-22 Orange Santa Ana Mountains; Ladd Cnayon Comment
  RSA649081  Delphinium Karl Price 1988-5-7 35 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
  RSA5931  Delphinium cardinale Carl B. Wolf 1932-7-2 s.n. Orange Carbon Canyon, 1/8 mile below La Vida Springs 213 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
  RSA5336  Dendromecon rigida subsp. rigida B. D. Stark 1933-1-4 4488 Orange Ridge above Claymine Canyon. No. end of Santa Ana Mts. 305 Comment
  RSA697472  Descurainia pinnata Elisabeth Norland 1929-3-3 s.n. Orange Cypress, Calif-Orange Rd. Comment
  UCR239910  Descurainia pinnata O. F. Clarke 2004-4-5 s.n. Orange South Coast, Newport Back Bay 3 Comment
  UCD114656  Descurainia pinnata Rimo Bacigalupi; P. C. Hutchison 1962-3-16 8234 Orange along U.S. 101, 2 miles north of Doheny Beach State Park. Comment
  CAS-BOT-BC43187  Descurainia pinnata subsp. brachycarpa Helen D. Geis 1902-3-1 s.n. Orange Santa Ana River. Comment
  IRVC1079  Descurainia pinnata subsp. menziesii J. Morgan 1965-4-27 Orange Elmore Ranch. San Clemente Comment
  RSA761799  Dicentra chrysantha Robt. Allen 2003-6-22 12293 Orange Northwest-facing flank of Santiago Peak, along North Main Divide Road. 1556 Comment
  UCR140805  Dichelostemma capitatum Robin G. Marushia 2004-4-16 004 Orange Southern Coast, El Moro Canyon, Crystal Cove State Park, Laguna Beach; grassy ridge southwest of No Name Ridge road in park, downhill from pullout and below closed road to park entrance 244 Comment
  RSA367484  Dichelostemma capitatum subsp. capitatum Christopher Davidson 1977-5-18 5626 Orange Santa Ana Mts. Cleveland Nat. Forest. Bear Springs 1220 Comment
  POM48839  Dichondra occidentalis Stephen Grout 1904-08 s.n. Orange Three Arches, Laguna 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
  UCR188994  Digitaria ischaemum Fred M. Roberts 2007-10-29 6622 Orange South Coast, Niguel Hill, Laguna Niguel. Seaview Park, 1.3 km ENE of Aliso Peak 265 Comment
  RSA788966  Digitaria sanguinalis R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49579 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  RSA791493  Digitaria sanguinalis R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49611 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station Comment
  SEINET13682959  Diplacus aurantiacus R. Nelson, Baumann, Kondratieff, Sargent 1988-1-12 5117 Orange Cleveland NF, San Juan Creek at Lower San Juan Campground. 366 Comment
  RSA0045519  Diplacus puniceus Minor Warne 1934-3-3 s.n. Orange Laguna Canyon Forks. CP5. Comment
  RSA0054846  Diplacus puniceus Anonymous s.n. Orange Laguna Canyon. Comment
  CDA3684  Diplotaxis muralis Margaret Bellue, E. L. Paddock, Andreas 1943-8-3 Orange Santa Ana Botanical Garden, Fullerton. 0 Comment
  CAS-BOT-BC43561  Diplotaxis tenuifolia Helen D. Geis 1902-1-1 544 Orange Santa Ana. Comment
  CAS-BOT-BC43566  Diplotaxis tenuifolia I. M. Johnston 1918-5-4 1927 Orange Santa Ana. Comment
  SEINET10745208  Dolichandra unguis-cati Peter H. Raven 2009-8-29 Raven 28669 Orange Irvine, SE corner of intersection of Jamboree and MacArthur. Comment
  IRVC8762  Draba cuneifolia var. integrifolia Charles W. Sexton 1965-2-12 Orange Newport Beach. Southern Coastal Comment
  POM493  Draba cuneifolia var. sonorae C. F. Baker 1904-4-1 4126 Orange Anaheim. Comment
  RSA732165  Drymocallis glandulosa A. C. Sanders, Fred M. Roberts 2008-4-8 34762 Orange Peninsular Range; Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd. 457 Comment
  UC1950970  Drymocallis glandulosa A. C. Sanders with Fred M. Roberts 2008-4-8 34762 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd. El Toro 7.5' Quad. Comment
  UCSB48384  Drymocallis glandulosa var. glandulosa Roberts, Fred 1982-4-18 Orange Santa Ana Mtns., San Juan Canyon, Hwy 74, 0.6km SW Lower San Juan Picnic Ground; 1.9km WNW Sitton Peak 420 Comment
  RSA0019579  Drymocallis glandulosa var. wrangelliana J. T. Howell 1927-6-24 201 Orange Aliso Canyon, Rancho Santa Ana. 274 Comment
  IRVC128  Dryopteris arguta C. Thompson 1965-4-15 Orange Trabuco Canyon. Santa Ana Mountains Comment
  IRVC24819  Dryopteris arguta Fred M. Roberts, G. A. Marsh 1986-5-16 2898 Orange ridge above San Juan Canyon, Sitton Peak Truck Trail, 3.9km W Sitton Peak, Santa Ana Mountains 670 Comment
  POM179748  Dryopteris arguta Marcus E. Jones 1931-3-23 s.n. Orange Laguna Comment
  RSA124720  Dryopteris arguta E. K. Balls, Percy C. Everett 1957-11-25 22843 Orange Trabuco Canyon, 1.7 mi. w. of entrance to Holy Jim Canyon, 670 Comment
  UC2030238  Dryopteris arguta J. Metzgar with K. Pryer and M. Windham 2006-4-25 177 Orange Cleveland National Forest: Hot Springs Canyon 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
  RSA791466  Dryopteris arguta Keith E. Hoffmaster 1928-5-29 36 Orange San Onofre. Comment
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Nov 19 2013
  UC905133  Dudleya R. V. Moran 1948-6-23 3097 Orange n-facing cliff near mouth of Aliso Canyon (s of Laguna Beach); ; near mouth of Aliso Canyon, S of Laguna Beach, Orange Co. 7 Comment
  RSA629057  Dudleya cymosa subsp. ovatifolia Valerie L. Soza, LeRoy Gross 1999-6-7 473 Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
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May 26 2016
  RSA588880  Dudleya edulis Fred M. Roberts, D. Bontrager 1990-6-5 4675 Orange Rancho Mission Viejo; Lower Canada Gobernidora, 3.1 km W Point Rancho Survey Marker 112 Comment
  RSA83424  Dudleya lanceolata F. W. Peirson 1924-5-31 4673 Orange 5 miles southeast of Laguna Beach. Comment
  UC933254  Dudleya lanceolata Reid Moran 1948-6-23 3093 Orange Arch Beach Comment
  UCR119302  Dudleya lanceolata R. E. Riefner Jr., Adrian Wolf 2000-6-1 20- 456 Orange Santa Ana Mountains, North Ranch Policy Plan Area, north of Irvine Lake [Santiago Reservoir] and west of Black Star Canyon, west of dirt access road, W slope of Fremont Canyon. 473 Comment
  CAS-BOT-BC411402  Dudleya lanceolata Theodore W. Minthorn 1924-5-30 s.n. Orange Pt. San Juan Comment
  RSA747594  Dudleya multicaulis Fred M. Roberts 2000-5-19 5327 Orange Lomas de Santiago: Loma Ridge, ridge west of Bee Peak above Bee Cyn. landfill, 0.2 km W Bee Peak. 500 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
  RSA13069  Dudleya pulverulenta P. C. Everett 1935-7-5 2361 Orange Rancho Santa Ana, Santa Ana Canyon hill N of Grapefruit orchard 152 Comment
  RSA757122  Dudleya pulverulenta A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37192 Orange Lomas de Santiago, lower Hangmans Tree Canyon. 379 Comment
  UCSB50638  Dudleya pulverulenta Roberts, Fred 1982-7-8 Orange Niguel Hills; Niguel Hill, above Pacific Island Road, 1.4 km. ESE Aliso Peak; 2.6 km. SSW Alicia Fire Station 205 Comment
  POM48549  Dudleya stolonifera F. M. Reed 1925-5-14 4994 Orange Aliso Canon. Comment
  UC806717 Image available Dudleya stolonifera R. V. Moran 1948-6-23 3095 Orange n-facing cliff near mouth Aliso Canyon (s of Laguna Beach); ; near mouth of Aliso Canyon, S of Laguna Beach, Orange Co. 7 Comment
  UC933268  Dudleya stolonifera Reid Moran 1949-5-28 3259 Orange Aliso Canyon Laguna Beach Comment
  RSA562748  Dudleya viscida Steve Boyd, Timothy S. Ross 1992-5-19 7444 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
  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
  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
  CAS-BOT-BC197031  Echinochloa colona Ira L. Wiggins 1965-10-24 20295 Orange On S. side of Yorba Linda Blvd, between State College Blvd. and Placentia Avenue, Fullerton Comment
  RSA17265  Echinochloa colona C. B. Wolf, E. R. Johnson 1936-7-10 8104 Orange Rancho Santa Ana, Santa Ana Canyon., [33 deg 51'30N, 117 deg 47'W] 122 Comment
  UCR219856  Echinochloa colona Fred M. Roberts 2008-6-3 7031 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, East Fork Rattlesnake Canyon, c. 2.6 km NE Rattlesnake Reservoir spillway and 2.4 km ENE Bee Peak 225 Comment
  POM1051  Echinochloa colona C. B. Bradshaw s.n. Orange Orange. 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
  CAS-BOT-BC197179  Echinochloa crus-galli John Thomas Howell 1927-7-18 2793 Orange Santa Ana River bottom, Santa Ana Canon [Canyon] 152 Comment
  RSA443824  Echinodorus berteroi Gordon Marsh 1975-7-28 s.n. Orange Huntington Beach: East Garden Grove-Wintersburg Flood Control Channel, just N of Warner St. bridge crossing, (No. C05) Comment
  UCR19807  Echinodorus berteroi F. M. Reed 1924-8-15 4963 Orange South Coast, Laguna Lake Beds, Laguna Canyon 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
  UCSB47620  Ehrendorferia chrysantha Roberts, Fred 1980-5-3 Orange Santa Ana Mtns., San Juan Canyon, Rte. 74, 0.2km S Lower San Juan Picnic Ground 393 Comment
  CHSC109685  Ehrharta calycina Scott D. White; Michael Honer 2003-6-12 9542 Orange Southwestern Santa Ana Mts Foothills: Rancho Mission Viejo. Upper end of Trampas Canyon. 168 Comment
  RSA689384  Ehrharta calycina Scott D. White, Michael Honer 2003-6-12 9542 Orange Rancho Mission Viejo. Upper end of Trampas Canyon. 152 Comment
  RSA751986  Ehrharta erecta Fred M. Roberts, Eliza Maher 2008-3-26 6798 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 71 Comment
  RSA665953  Elatine brachysperma Fred M. Roberts, Michelle Lee, Kristen Szabo 2001-4-13 5424 Orange Rancho Mission Viejo: South of San Juan Creek, 0.6km WNW Median Rancho Survey Marker. PCR Vernal Pool 2. 183 Comment
  RSA708812  Elatine brachysperma Fred M. Roberts, Robert L. Allen, Chris Barnhill, Carol A. Roberts 2005-4-10 6165 Orange Costa Mesa: Fairview Park, west of north end of Canyon Drive, c.a. 0.2km WNW Marison Special Education Center (Canyon Sch. on topos). 24 Comment
  RSA588792  Eleocharis montevidensis var. montevidensis Fred M. Roberts, D. Bontrager 1990-4-18 4569 Orange Rancho Mission Viejo: Canada Chiquita, east side of canyon near mouth, 2.7 kilometers SSE Median Rancho Survey Marker; UTM Z11 37 10 000N, 4 43 800m E 79 Comment
  RSA83  Eleocharis palustris J. T. Howell 1927-6-30 238 Orange Bryant Ranch near Long Beach. 15 Comment
  CAS-BOT-BC112211  Eleocharis rostellata John Thomas Howell 1927-7-21 2807 Orange Marsh, Santa Ana River bottom, Santa Ana Canyon 152 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
  UCR236681  Eleusine indica Fred M. Roberts, Sandra L. Leatherman 2008-9-17 7103 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
  UCR2375  Elymus triticoides F. M. Reed 1932-5-24 7234 Orange South Coast, San Juan Capistrano, behind beach dune 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
  CHSC30407  Encelia californica T. B. Devine 1980-4-2 619 Orange On Back Bay Dr. E. of Upper Newport Bay ca 2 mi. N. of jct. with Jamboree Rd. Comment
  HSC25235  Encelia californica Richard Spjut 1972-2-22 2227 Orange W of the Cleveland National Forest in the Santa Anna Mtns. along Hwy. 74 152 Comment
  IRVC648  Encelia californica D. Van Gorden 1965-4-12 Orange 17th Street. Costa Mesa Comment
  RSA749287  Encelia californica Fred M. Roberts, David E. Bramlet 2008-4-1 6835 Orange Lomas de Santiago: Loma Ridge, Upper Hicks Cyn. along Haul Road, 1.0 km NNW Bee Peak, Irvine Ranch Conservancy. 341 Comment
  UCR192476  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
  UCR99554  Encelia californica B. G. Pitzer 1996-4-30 2792 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  RSA0037061  Encelia californica Darren Day, Hal Willis 1984-4-28 009 Orange Growing at the side of Laguna Canyon Rd. exactly 2.5 mi outside of the city limits, heading north. Comment
  UC1118064  Encelia californica H. E. Norton 1931-3-1 53 Orange Corona #1 Corona Quadrangle Comment
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Apr 24 2014
  RSA25948  Encelia farinosa var. farinosa E. R. Johnson 1941-5-16 s.n. Orange Rancho Santa Ana, River bottom near Old Peak Orchard. Comment
  RSA753484  Epilobium canum A. C. Sanders, Fred M. Roberts 2008-9-18 36084 Orange Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge. 320 Comment
  RSA717047  Epilobium ciliatum Fred M. Roberts 2005-10-3 6290 Orange San Juan Capistrano: San Juan Creek, La Novia Road bridge to 100m E of bridge, 1.4km E Mission San Juan Capistrano. 27 Comment
  UCR193826  Epilobium ciliatum A. C. Sanders, Fred M. Roberts 2008-7-16 35838 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin 391 Comment
  RSA698282  Epilobium watsonii var. franciscanum Snow 1929-3-18 39 Orange Santa Ana River. Comment
  RSA754075  Epipactis gigantea A. C. Sanders, Fred M. Roberts 2008-7-16 35844 Orange Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin 391 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
  JEPS68587  Eragrostis mexicana subsp. virescens Lawrence M. Booth 1932-7-18 1261 Orange Newport Bay Balboa Island; , Balboa Island 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
  RSA436021  Eremocarpus setiger F. R. Fosberg 1931-6-21 S- 5081 Orange Lower Santiago Canyon. Comment
  UC52799  Eriastrum sapphirinum W. C. Blasdale June 1891 Orange Santiago Canyon Comment
  CAS-BOT-BC514997  Eriastrum sapphirinum subsp. dasyanthum L. R. Abrams 1901-6-1 1791 Orange Trabuco Canyon Comment
  RSA0121307  Eriastrum sapphirinum subsp. dasyanthum J. T. Howell 1927-6-1 9 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  RSA0121318  Eriastrum sapphirinum subsp. dasyanthum Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, head of Gypsum Canyon 412 Comment
  IRVC763  Ericameria linearifolia D. Christy 1965-5-12 Orange Corona del Mar, Begonia St. Newport Beach Comment
  OBI45880  Ericameria palmeri var. pachylepis B. Pitzer, D. Hawks 1986-10-21 345 Orange Lomas de Santiago, ca. 10 mi E of Santa Ana, in hills N and E of south Coast Gun Club on Jeffrey Rd in Hicks Canyon 183 Comment
  POM201508  Ericameria palmeri var. pachylepis L. M. Booth 811 Orange Santa Ana Canyon 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
  RSA16676  Ericameria palmeri var. pachylepis C. B. Wolf 1931-10-30 2504 Orange Rancho Santa Ana, Santa Ana Canyon. 207 Comment
  RSA450872  Ericameria palmeri var. pachylepis Fred M. Roberts 1983-12-9 1151 Orange Irvine Uc, Irvine Ecological Preserve, 0.8dm SSW Campus center. 70 Comment
  UC536889  Ericameria palmeri var. pachylepis L. M. Booth Orange Newport Beach Comment
  RSA789196  Ericameria parishii Naomi Fraga, Duncan S. Bell, Sarah J. De Groot 2009-9-11 3157 Orange Santa Ana Mountains, Blue Jay Campground. 910 Comment
  UCR231187  Ericameria pinifolia A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39937 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1125 Comment
  UCR258622  Erigeron bonariensis Fred M. Roberts 2014-7-25 7886 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
  SDSU3943  Erigeron foliosus D. F. Howe 1976-6-4 4905 Orange Trabuco Canyon, Santa Ana Mts. 305 Comment
  RSA298672  Eriodictyon crassifolium D. C. Michener 1982-5-24 4043 Orange 8.4 miles north of El Cariso, Orange County. Comment
  RSA0045584  Eriodictyon crassifolium Ken Eastman 1932-5-8 s.n. Orange Saddle Back 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
  POM184315  Eriogonum elongatum L. M. Booth 1932-8-9 1370 Orange Newport Lagoon, above 3 miles from ocean, above the dirt road. Comment
  RSA731762  Eriogonum elongatum Fred M. Roberts, Sandy Leatherman 2007-11-9 6644 Orange San Juan Canyon along San Juan Creek. 0.2 km E community of San Juan Hot Springs. 222 Comment
  POM293155  Eriogonum fasciculatum Lyman Benson 1946-5-13 12095 Orange Corona del Mar, Pacfic Ocean drainage area 15 Comment
  RSA581363  Eriogonum fasciculatum R. E. Riefner Jr. 1995-4-17 95 -67 Orange San Clemente State Beach, NW bluff. Comment
  RSA65146  Eriogonum fasciculatum F. W. Peirson 1924-2-10 4527 Orange Corona Del Mar Comment
  UCR222389  Eriogonum fasciculatum Mark A. Elvin 2003-1-26 2243 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  RSA734991  Eriogonum fasciculatum subsp. foliolosum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35286 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir. 300 Comment
  CAS-BOT-BC253216  Eriogonum fasciculatum var. fasciculatum John Thomas Howell 1927-7-24 2835 Orange Near mouth of Claymine Canyon, Santa Ana Canyon 152 Comment
  CAS-BOT-BC253217  Eriogonum fasciculatum var. fasciculatum C. B. Wolf 1931-8-9 1171 Orange Bottom of ravine near ocean 1/2 mile south of Corona del Mar Beach, 1st small canyon 7 Comment
  CAS-BOT-BC253218  Eriogonum fasciculatum var. fasciculatum Joseph Andorfer Ewan 1932-7-28 7705 Orange Corona del Mar Comment
  CAS-BOT-BC253222  Eriogonum fasciculatum var. fasciculatum David D. Keck 1932-9-30 1903 Orange 2 mi. W. of Laguna Beach Comment
  SD254072  Eriogonum fasciculatum var. fasciculatum Jim Riley 2013-12-10 135 Orange San Clemente area; 0.29 miles E intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 74 Comment
  UCD105101  Eriogonum fasciculatum var. fasciculatum K. M. Meyer; A. Townesmith 2007-3-10 4 Orange Cleveland National Forest, 0.5 mi. N. Main Divide Rd./NF3S04, off Hwy. 74. Elsinore Mountains, ridge top. 917 Comment
  RSA542525  Eriogonum fasciculatum var. foliolosum Fred M. Roberts 1988-5-13 3971 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Canyon near spring, 2.3 km NW Bolero Lookout. 439 Comment
  UCR131885  Eriogonum fasciculatum var. foliolosum J. Mallory, V. McCoy 1995-7-3 6454- 98 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
  UCR227634  Eriogonum saxatile Robt. L. Allen 2003-6-22 12372 Orange Santa Ana Mountains, Modjeska Peak, southwestern arm, 0.6 air mi southwest of the summit 1512 Comment
  RSA761926  Eriogonum saxatile Robt. Allen 2003-6-22 12371 Orange Modjeska Peak, southwestern arm, 0.6 air miles southwest of the summit. 1513 Comment
  CAS-BOT-BC297330  Eriophyllum confertiflorum Cecil Hart 1928-5-27 s.n. Orange Laguna Beach Comment
  HSC5622  Eriophyllum confertiflorum S. M. Clapp 1966-4-7 45 Orange 3 mi. from Modjeska Canyon towards Siverado Canyon 183 Comment
  RSA734762  Eriophyllum confertiflorum A. C. Sanders, Teresa B. Salvato 2008-5-13 35342 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
  IRVC15665  Eriophyllum confertiflorum var. confertiflorum A. S. Boughey, P. Pembrook 1965-6-18 1018 Orange Los Trancos Canyon at bottom, ; chaparral. San Joaquin Hills Comment
  LA203538  Eriophyllum confertiflorum var. confertiflorum W. Pequegnat; 1937-9-6 sn Orange Santa Ana Mountains, Ortega Rd Comment
  UC421696  Eriophyllum confertiflorum var. confertiflorum John Thomas Howell 1927-6-26 2592 Orange Claymine Canyon n. Santa Ana Mts., Claymine Canyon 243 Comment
  UC536892  Eriophyllum confertiflorum var. confertiflorum Lawrence M. Booth 1932-5-12 1042 Orange Newport Bay Comment
  RSA12903  Erodium botrys E. R. Johnson 1935-3-1 6293 Orange 1 miles west of Atwood, south side of Railroad. 91 Comment
  RSA610240  Erodium brachycarpum Fred M. Roberts 1997-3-13 4983 Orange Rancho Mission Viejo: Christianitos Canyon, 4 km ESE Viejo Survey Mark. 5 Comment
  RSA678509  Erodium cicutarium Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1126 Orange Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  RSA649073  Erodium cicutarium Karl Price 1988-4-29 9 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
  UCSB48064  Erodium cicutarium Fritzke, S.; Roberts, Fred 1982-4-2 Orange Laguna Niguel: hills; 3.5km ESE Aliso Peak; 3.2km ESE Alicia Fire Station; N of Del Avion 100 Comment
  UC1286998  Erodium moschatum C. L. Hitchcock 1966-3-15 24138 Orange 0.5 mi e Brea Comment
  UCR192488  Erodium moschatum A. C. Sanders, Fred M. Roberts 2008-3-25 34555 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA800022  Eryngium aristulatum var. parishii Justin M. Wood 2011-6-28 4301 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. Just W of parking area. 25 Comment
  UCR191364  Eschscholzia californica A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34625 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 290 Comment
  POM415  Eschscholzia californica var. peninsularis D. L. Crawford 1916-5-15 990 Orange Languna Canyon. Shade Comment
  UCR184670  Eucalyptus camaldulensis Dean Kelch 2006-12-9 06 .555 Orange Irvine. University Dr. along tidal Creek just east of I-73 9 Comment
  CDA5158  Eucalyptus utilis D. G. Kelch 2006-12-9 6 .538 Orange Along Newport Back Bay Dr. in side canyon. Comment
  UCR162345  Eucalyptus utilis Robert DeRuff 2000-1 523 Orange Southern Coast, Newport Beach, Upper Newport Back Bay. Northerly side of upper Big Canyon c. half way between the beginning of the upper canyon and Jamboree Road 30 Comment
  RSA598962  Eucrypta chrysanthemifolia Scott D. White 1997-3-28 4834 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  UCR209384  Eucrypta chrysanthemifolia Fred M. Roberts 2008-3-25 6793 Orange Loma Ridge, Upper Hicks Canyon near Haul Road, c. 4.4 km by road from Portola Parkway, and 3.2 km east northeast Rattlesnake Canyon Reservoir 269 Comment
  UCSB48082  Eucrypta chrysanthemifolia Roberts, Jr., Fred 1981-4-12 Orange Santa Ana Mountains: San Juan Canyon, Hwy 74 2.0km by road SW of San Juan Guard Station; 2.7km SW Juan Rancho Survey Mark 210 Comment
  UC537165  Eucrypta chrysanthemifolia var. chrysanthemifolia L. M. Booth 1932-5-19 1063 Orange Newport Beach Comment
  RSA697586  Euphorbia albomarginata J. R. Bruff s.n. Orange Roadside-Near Orange Co. Park. Comment
  SBBG127562  Euphorbia misera T. B. Salvato 2010-9-27 5106 Orange Dana Point Headlands, Harbor Point Park, S of Scenic Dr and Cove Rd, beyond the end of Green Lantern St, overlooking Dana Point Harbor 52 Comment
  RSA734983  Euphorbia peplus A. C. Sanders, T. B. Salvato 2008-5-13 35371 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  RSA797403  Euphorbia peplus Keith E. Hoffmaster 1928-5-3 s.n. Orange Santa Ana. Comment
  UCR192492  Euphorbia polycarpa A. C. Sanders, Fred M. Roberts 2008-3-25 34560 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA773524  Euphorbia polycarpa var. polycarpa Fred M. Roberts 1999-5-14 5215 Orange Peninsular Ranges; Santa Ana Mts.: Lomas de Santiago, Loma Ridge; Upper Limestone Canyon on slopes above Bolero Spring, 2.4 km NNW Bolero Lookout. 451 Comment
  RSA797436  Euphorbia serpillifolia Keith E. Hoffmaster 1933-6-19 s.n. Orange Santa Ana. Comment
  UCR210359  Euphorbia serpillifolia subsp. hirtula T. B. Salvato, Billy Deane 2006-10-16 1930 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  IRVC17085  Euphorbia serpyllifolia var. hirtula A. B. McGee 1980-9-9 Orange San Diego Creek Channel, adjacent to San Joaquin Freshwater Marsh. Irvine Comment
  IRVC23251  Euphorbia serpyllifolia var. hirtula K. Kirtland 1987-8-25 Orange Santa Fe Channel along Edinger Ave.; disturbed flood channel with flowing water, sandy soil. Tustin Comment
  RSA732155  Euphorbia spathulata A. C. Sanders, Fred M. Roberts 2008-4-22 35028 Orange Santa Ana Mtns.: Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 1200 Comment
  SD255148  Euphorbia supina R. F. Thorne 1977-11-21 49992 Orange Santa Ana Mountains: San Juan Canyon ca. 2.0 miles above San Juan Fire Station. Comment
  RSA151085  Euthamia occidentalis Peter H. Raven 1961-10-15 16856 Orange Dyke along road to Yorba Linda just north of US Hwy 91 114 Comment
  UCSB52990  Euthamia occidentalis Roberts, Jr., Fred 1983-9-29 Orange Irvine; San Joaquin Freshwater Marsh, 1.9 km. NNW UCI campus center 2 Comment
Read comments
Dec 12 2018
  SD255109  Euthamia occidentalis R. F. Thorne 1977-11-21 49982 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp. Comment
  UCR209670  Festuca myuros var. myuros Fred M. Roberts 2008-4-16 6911 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
  RSA731756  Ficus elastica Fred M. Roberts, Sandy Leatherman 2007-11-9 6649 Orange San Juan Canyon along San Juan Creek, within the community of San Juan Hot Springs. 216 Comment
  CAS-BOT-BC502075  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -379 Orange City of Anaheim, Pearson Park, SE section of park, N of N. Helena St. and W. Cypress St., near jct of N Lemon St. and W. Cypress T. 44 Comment
  UC2046890  Ficus microcarpa R. E. Riefner Jr. 2015-8-29 15 -368 Orange City of Rancho Santa Margarita, Trabuco Marketplace, Rancho Santa Margarita Blvd. at Plano Trabuco. Comment
  CDA22222  Ficus rubiginosa D. G. Kelch 2006-12-9 6 .565 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  SEINET7073424  Filago californica A. G. Vestal 1963-4-24 s.n. Orange La Paz Canyon, Rancho Mission Viejo. Coordinate datum: NAD27. Comment
  UCR191334  Filago californica A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34649 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
  RSA588652  Filago californica Fred M. Roberts, Carol A. Roberts 1990-5-23 4657 Orange Santa Ana Mts.: West Fork, Upper Long Canyon, Main Divide Truck Trail, 4.3 km SE Los Pinos Peak. 753 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
  UCR106279  Filago gallica B. G. Pitzer, M. Georgiady 1997-4-5 3087 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
  UCR237931  Foeniculum vulgare Mark A. Elvin 2003-2-2 2257 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  CAS-BOT-BC63072  Frangula californica subsp. californica Carl B. Wolf; E. R. Johnson 1933-11-3 5532 Orange Santa Ana Mts., Silverado Canyon, base of Silverado Motorway. 731 Comment
  LA207689  Frangula californica subsp. cuspidata P. C. Everett; 1935-6-18 5451 Orange Santa Ana Mountains, summit of Santiago Peak 1731 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
  SD120877  Frangula californica subsp. tomentella Reid Moran 1975-7-18 22600 Orange slope, upper Trabuco Canyon, Santa Ana Mountains 700 Comment
  RSA144566  Frankenia grandifolia Peter H. Raven 1958-6-5 13563 Orange Just north of Surfside Comment
  RSA30666  Frankenia grandifolia Louis C. Wheeler 1932-6-22 844 Orange Newport Bay. 1 Comment
  RSA391401  Frankenia grandifolia Joseph A. Ewan 1932-7-28 7701 Orange Corona Del Mar Comment
  PASA432  Frankenia grandifolia var. campestris Frank W. Peirson 1924-5-31 Orange Laguna Canyon 91 Comment
  SD39967  Frankenia salina Edith A. Purer 1932-8-31 4874 Orange Along Route 101. Comment
  UC1494288  Frankenia salina Molly Whalen and Liz Evans 1978-6-2 510 Orange near Bolsa Chica Visitors Center (just off Hwy 1) Comment
  UCD99588  Frankenia salina E. Frost 1996-5-11 15 Orange Newport Back Bay, 25 yards in along bike path. 7 Comment
  UCR240107  Frankenia salina Dick Newell, Judy Booth 2012-9-26 291 Orange South Coast, Newport Beach, Back Bay Drive at the Salt Dike 3 Comment
  UCR261699  Fraxinus dipetala Dick Newell, Judy Booth 2014-5-15 371 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Maple Springs Rd./Silverado Canyon Rd., 0.87 road miles east of the lower Maple Springs gate 623 Comment
  CDA23578  Fraxinus uhdei T. McCrainie, Mark A. Elvin 2006-9-23 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
  RSA734971  Fraxinus uhdei A. C. Sanders, Fred M. Roberts 2008-6-17 35464 Orange Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  RSA749449  Fritillaria biflora Fred M. Roberts 2009-4-11 6885 Orange Lomas de Santiago: Loma Ridge, upper Dripping Springs Cyn., 0.9 km NE Bee Peak and 1.2 km WNW Dripping Springs. 448 Comment
  RSA696600  Fumaria officinalis Keith E. Hoffmaster 1933-3-15 410 Orange near Santa Ana. Comment
  RSA184103  Fumaria parviflora I. L. Wiggins 1965-12-5 20366 Orange 2 miles east of Atwood on north side of Orangethorpe Ave. Comment
  OBI42766  Fumaria parviflora Larry Summers 1983-4-18 s.n. Orange Tustin, Irvine Ranch, Field 120 at the intersection of Bryan and Culver. At the edge of a tomato field 46 Comment
  UCR132569  Gaillardia X grandiflora Robert DeRuff 2001-9-19 s.n. Orange Southern Coast, Newport Back Bay, Shellmaker Island 1 Comment
  RSA734597  Galinsoga parviflora A. C. Sanders, Fred M. Roberts 2008-5-6 35226 Orange 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
  RSA0013915  Galium angustifolium Fred M. Roberts 2012-5-10 7579 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
  UCR191003  Galium angustifolium A. C. Sanders, Fred M. Roberts 2008-4-22 35005 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
  UCR240085  Galium angustifolium Dick Newell, Judy Booth 2012-6-3 264 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Maple Springs Truck Trail/Silverado Canyon Rd., 1.6 miles ENE of Maple Springs Gate 741 Comment
  UCSB45140  Galium angustifolium Woicik, Richard 1976-5-21 Orange Modjeska Canyon, near fire station Comment
  POM367705  Galium angustifolium subsp. angustifolium Albert J. Perkins 1913-4-29 s.n. Orange Trabuco Canyon. Comment
  RSA542396  Galium angustifolium subsp. angustifolium Fred M. Roberts Jr., R. E. Riefner 1988-7-19 4122 Orange Modjeska Peak, west slope, along old abandoned road, 0.2 km west summit 1592 Comment
  RSA688976  Galium angustifolium subsp. angustifolium Fred M. Roberts, David E. Bramlet 2003-4-10 5644 Orange Rancho Mission Viejo: Donna O'Neill Land conservancy, Back Road, ridge between Cristianitos Cyn, and Segunda Deshecha Canada, 1.45km WNW Gato Gate. 216 Comment
  RSA792478  Galium aparine Justin M. Wood 2011-2-28 3269 Orange South Coast: Santa Ana River, marsh just upstream of Pacific Coast Highway. Plants collected throughout the marsh and along the adjacent bike path. 0 Comment
  SBBG7296  Galium aparine H. and M. Dearing 1937-3-12 1861 Orange Santa Ana Cyn Comment
  CDA42130  Galium aparine D. H. Byers 1957-6-25 s.n. Orange [No further data.] 0 Comment
  RSA734901  Galium parisiense A. C. Sanders 2008-5-28 35436 Orange Lomas de Santiago, Bee Flat at mouth of Limestone Canyon. 264 Comment
  RSA734343  Galium porrigens A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34632 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 366 Comment
  UCR191347  Galium porrigens A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34632 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 290 Comment
  RSA749290  Galium porrigens var. porrigens Fred M. Roberts 1999-4-2 5168 Orange Lomas de Santiago: Loma Ridge, Dripping Springs Spur Rd., 2.3 km W Silverado Sch. and 5.1 km NW Bolero Lookout. 450 Comment
  UC1543098  Gamochaeta pensylvanica Donald G. Nelson 1936-5-29 427 Orange by fence enclosing orange orchard J. R. Schofield Ranch (on S. Grand Ave., the main highway s of Buena Park); , S. Grand Ave. Comment
  UCR193262  Gamochaeta pensylvanica A. C. Sanders, Fred M. Roberts 2008-6-17 35523 Orange Peninsular Range; Santa Ana Mtns., middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 230 Comment
  CAS-BOT-BC178504  Garrya flavescens Le Roy Abrams 1901-6-15 1811 Orange Santiago Peak Trail Comment
  CHSC116473  Garrya flavescens subsp. pallida R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49700 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA5344  Garrya flavescens var. pallida B. D. Stark 1933-1-4 4497 Orange Bottom of Claymine Canyon. No. end of Santa Ana Mts. 305 Comment
  RSA53  Gastridium phleoides J. T. Howell 1927-6-17 163 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA732281  Gastridium phleoides A. C. Sanders 2008-4-29 35131 Orange 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
  RSA798187  Gastridium phleoides R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49596 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  SEINET179445 Image available Gastridium phleoides L. M. Booth 1932-5-19 1082 Orange Newport Bay Comment
  RSA86777  Gastridium phleoides F. W. Peirson 1923-9-7 4033 Orange Holy Jim Trail to santiago Peak 1143 Comment
  UCR191010  Gastridium ventricosum A. C. Sanders, Fred M. Roberts 2008-4-22 35017 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  UCR194863  Gastridium ventricosum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35321 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
  CDA5172  Gaura drummondii Johnson 1939-8-1 1 Orange North Whittier Heights. 0 Comment
  POM255092  Gaura odorata E. Johnson 1940-8-15 s.n. Orange Kokke estate, I.5 miles north of Placentia. Comment
  POM18088  Gayophytum diffusum subsp. parviflorum P. A. Munz 1923-9-7 7749 Orange Santiago Peak, Santa Ana Mountains. 1646 Comment
  RSA0127604  Geranium carolinianum Fred M. Roberts 2016-3-25 8034 Orange San Joaquin Hills: Bommer Canyon, west slope near south end fo Nature Loop Trail, 0.1 km NW Cattle Camp and 1.6 km NE summit of Signal Peak. 146 Comment
  RSA542392  Geranium carolinianum Fred M. Roberts 1988-3-15 3845 Orange Rancho Mission Viejo: Verdugo Canyon, 2.6 km ENE Point Rancho Survey Mark 149 Comment
  RSA542473  Geranium dissectum Fred M. Roberts 1988-3-15 3852 Orange Rancho Mission Viejo: Verdugo Canyon, 2.6 km ENE Point Rancho Survey Mark 149 Comment
  RSA797017  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-30 12 -285 Orange City of Costa Mesa, Talbert Regional Park, general vicinity of Balboa Boulevard and 19th Street. 5 Comment
  RSA734014  Gilia angelensis A. C. Sanders, Fred M. Roberts 2008-4-22 35061 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Loma Ridge c. 1/4 mi. SE of VABM Bee, above Bee Canyon landfil on road from H icks Canyon Haul Rd. to Limestone Canyon, c. 3.5 miles WSW of Silverado. 493 Comment
  RSA3167  Gilia angelensis C. B. Wolf 1932-3-8 2696 Orange Santiago Dam, W. base Santa Ana Mts. 305 Comment
  RSA708369  Githopsis diffusa subsp. candida Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6243 Orange Modjeska Peak summit, c.a. 60m south of highest point. 1675 Comment
  UCD132374  Glebionis coronaria B. Pitzer 1996-4-30 2763 Orange Upper Newport Bay: California Department Fish and Game Ecological Reserve, off (W of) Jamboree Rd. 6 Comment
  CAS-BOT-BC303650  Glebionis coronaria Helen D. Geis 1902-1-1 538 Orange Santiago Creek Comment
  IRVC441  Gnaphalium bicolor B. Savage 1965-5-15 Orange Newport Beach Comment
  POM358937  Gnaphalium californicum N. C. Cooper 1949-5-1 3945 Orange San Juan Canyon 610 Comment
  UCR192082  Gnaphalium californicum A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35303 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 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
  RSA722938  Gnaphalium leucocephalum R. E. Riefner 2007-3-21 07 -157 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek. Comment
  UCR138408  Gnaphalium leucocephalum Scott D. White, Brian Leatherman 1997-6-12 5342 Orange Santa Ana Mtn. foothills, E of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e. c. 2-4 mi east of Hwy I-15/Hwy 74 junction 76 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
  RSA0054863  Gnaphalium palustre Ophelia Frost 1932-5-2 s.n. Orange Along a dirt road, 2 miles east of H. B. Comment
  UCR158151  Gnaphalium stramineum Adrian Wolf 1998-5-27 340 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
  UCR93932  Gnaphalium stramineum B. G. Pitzer 1996-4-30 2800 B Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  RSA698229  Godetia bottae R. H. McArthur 1934-5-19 s.n. Orange Trobuca Canyon. Comment
  RSA698231  Godetia bottae G. Gentges 1932-5-8 s.n. Orange Silverado Canyon Wash. Comment
  RSA734895  Grindelia camporum A. C. Sanders 2008-5-28 35430 Orange Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  UCR37800  Grindelia camporum 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
  RSA161302  Grindelia camporum var. bracteosa Peter H. Raven 1959-4-30 14038 Orange Base of ocean bluffs just N of San Clemente. Comment
  RSA5917  Grindelia camporum var. bracteosa C. B. Wolf 1932-7-2 3810 Orange Orange County, Valencia Ave, Olenda, opposite the Olinda Pilgrim Church 152 Comment
  UCR233742  Grindelia camporum var. bracteosa Fred M. Roberts 2008-6-26 7059 Orange Santa Ana Mtns. Foothills, Lomas de Santiago; Loma Ridge along West Loma Ridge Road, c. 1 km north of Haul Road, 2.5 km NNW of Bee Peak, Irvine Ranch Land Conservancy 382 Comment
  CAS-BOT-BC305207  Grindelia hirsutula Carl B. Wolf 1932-7-2 3810 Orange Olinda. Valencia Ave., opposite Olinda Pilgrim Church 152 Comment
  UCR7735  Grindelia robusta P. Sunderman 1968-5-11 s.n. Orange W of U.S. 101, immediately south of Corona del Mar. 30 Comment
  POM201690  Gutierrezia californica L. M. Booth 814 Orange Santa Ana Canyon Comment
  RSA703141  Gutierrezia californica Fred M. Roberts, Art Davenport 2003-9-11 6015 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
  RSA734692  Gutierrezia californica A. C. Sanders, Fred M. Roberts 2008-6-17 35503 Orange Weir Canyon, Windy Ridge Rd., saddle on ridge at head, above the Eastern Transportation Corridor 400 Comment
  RSA581660  Hainardia cylindrica Tony Bomkamp 1995-06 s.n. Orange Gabino Canyon, near confluence with Cristianitos Canyon. (San Clemente USGS 7.5' quadrangle) Comment
  RSA756326  Haplopappus menziesii A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37196 Orange Lomas de Santiago, Limestone Canyon, west of Limestone Canyon Rd. 366 Comment
  UCR231201  Haplopappus squarrosus A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39939 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1143 Comment
  UCR132982  Harpagonella palmeri Adrian Wolf 2000-4-10 451 Orange Santa Ana Mtns., North Ranch Policy Plan Area, North Baker Canyon Road 351 Comment
  RSA0066583  Harpagonella palmeri Fred M. Roberts, Tony Bomkamp 1997-3-13 4981 Orange Rancho Mission Viejo: Christianitos Canyon, 4km ESE Viejo Survey Mark. 155 Comment
  UCSB52425  Hazardia squarrosa var. grindelioides Roberts, Fred 1982-9-15 Orange Rancho Mission Viejo: 6.4km ENE San Juan Capistrano by road on Rte. 74; 0.9km NNE Viejo Peak 115 Comment
  CAS-BOT-BC306305  Hedypnois cretica C. B. Wolf 1938-5-2 9406 Orange City of Fullerton, Francis St., 1200 block E. side in vacant lot 60 Comment
  SD152934  Hedypnois cretica Steve Boyd, Tim Ross 1992-5-20 7462 Orange Southern Santa Ana Mountains; western edge of the wilderness in Lucas Canyon along canyon floor from crossing of Lucas Canyon Trail and spur trail to old mining habitations. 305 Comment
  UCSB48061  Hedypnois cretica Fritzke, S.; Roberts, Fred 1982-4-3 Orange Dana Point Headlands: north of Dana Strand Rd., 0.5km W Dana Point Harbor; 0.8km SSW Richard Henry Dana School 80 Comment
  UCSB52872  Hedypnois cretica Roberts, Fred 1983-3-27 Orange Dana Point Headlands: north of Dana Strand Rd., 0.5km W Dana Point Harbor; 0.8km SSW Richard Henry Dana School 80 Comment
  LA204753  Helianthemum scoparium W. Pequegnat; 1937-9-1 sn Orange Santa Ana Mountains, Top of Horsethief Trail Comment
  RSA5357  Helianthemum scoparium var. scoparium C. B. Wolf, B. D. Stark, Adrian Wolf 1932-12-19 4439 Orange Main divide of Santa Ana Mts. between Sierra Peak and Skyline Drive 762 Comment
Read comments
Feb 23 2019
  UC537024  Helianthus annuus Lawrence M. Booth 1932-6-29 1230 Orange Newport Bay Comment
  RSA697136  Helianthus annuus Anonymous s.n. Orange Santa Ana Comment
  POM201743  Helianthus annuus subsp. lenticularis L. M. Booth 1932-6-29 1230 Orange Newport Bay. Comment
  UCR109777  Helianthus annuus subsp. lenticularis G. S. Nuessly 1980-11-27 s.n. Orange Santa Ana Mtns. Foothills, Villa Park near Orange, north side of Hewes St. at Santiago Blvd., Santiago Creek watershed 107 Comment
  UC774875  Helianthus ciliaris E. L. Paddock 1941-8-1 Orange 2 mi e Brea; Graham-Loftus property Comment
  CDA6543  Helianthus ciliaris T. C. Fuller 1962-6-7 8874 Orange Veeh ranch, north of El Toro, ca. 11 miles southeast of Tustin. 0 Comment
  UCSB45935  Helianthus ciliaris Clark, Dell 1969-7-14 Orange on the Veeh Ranch, two miles west of El Toro Comment
  POM256708  Helianthus gracilentus W. Pequegnat 1940-6-15 s.n. Orange Holy Jim Trail 1220 Comment
  RSA748268  Helianthus gracilentus A. C. Sanders, Fred M. Roberts 2008-6-17 35513 Orange middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  RSA0022445  Helianthus gracilentus R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49783 Orange Santa Ana Mountains: Trabuco Canyon Comment
  POM3866  Heliotropium curassavicum var. oculatum Lois Clency 1914-07 s.n. Orange Laguna. Comment
  RSA5803  Hemizonia australis C. B. Wolf 1932-6-28 3781 Orange Along western half of no. boundary of 40 acre Valencia Orange grove at Bryant Ave. and Hansen Road. 9 Comment
  IRVC17976  Hemizonia fasciculata K. Marsh 1980-5-8 Orange Pelican Point. Crystal Cove State Park Comment
  POM5000  Hemizonia fasciculata H. M. Hall 1906-6-19 7411 Orange Gypsum, Santa Ana Canyon 122 Comment
Read comments
Sep 4 2011
  POM6416  Hemizonia fasciculata P. A. Munz 1919-5-3 2642 Orange Santa Ana River Canyon. Comment
  RSA232233  Hemizonia fasciculata James Henrickson 1970-7-25 5069 Orange 2 miles N of Huntington Beach along NE margin of Bolsa Chica Salt March. 0 Comment
  UCR158032  Hemizonia fasciculata Adrian Wolf 1998-5-15 295 Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 Comment
  UCR193798  Hemizonia fasciculata A. C. Sanders, Fred M. Roberts 2008-7-3 35682 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 Comment
  IRVC25204  Hemizonia parryi subsp. australis Fred M. Roberts 1986-11-4 3199 Orange Anaheim Bay, north of Hog Island, Seal Beach Naval Weapons Station 0 Comment
  UCR158036  Hemizonia parryi subsp. australis Adrian Wolf 1998-7-1 410 Orange South Coast, Peters Canyon Channel, east of channel near Harvard Ballfield, between Harvard Ave. & creek, south of Warner Ave. to Barranca 15 Comment
  CAS-BOT-BC403798  Hesperocnide tenella D. L. Crawford 1916-7-1 1959 Orange Near Laguna Comment
  CAS-BOT-BC143752  Heteromeles arbutifolia P. Everett; E. R. Johnson 1937-11-30 9380 Orange Santa Ana Mts., Bold Meadow at head of Claymine Canyon on slopes of Sierra Peak 762 Comment
  RSA1697  Heteromeles arbutifolia Carl B. Wolf 1931-3-6 1840 Orange Trabuco canyon, 1/2 mile above Trabuco Oaks, west slope of Santa Ana Mountains. 457 Comment
  UC527322  Heteromeles arbutifolia Carl B. Wolf and B. D. Stark 1932-12-19 Orange 0.5 mi from Skyline Drive (on firebreak road to Sierra Peak); Santa Ana Mts. 762 Comment
  UC860401  Heteromeles arbutifolia C. B. Wolf and B. D. Stark 1932-12-19 4430 A Orange 1/2 mi from Skyline Drive on Firebreak Road to Sierra Peak (Santa Ana Mountains); , Firebreak Road 762 Comment
  UCD113320  Heteromeles arbutifolia K. M. Meyer; A. Townesmith and T. Scott 2007-3-10 3 Orange Cleveland National Forest, 0.5 mi. N. Main Divide Rd./NF3S04, off Hwy. 74. Elsinore Mountains, ridge top. 917 Comment
  UCR222879  Heteromeles arbutifolia T. B. Salvato 2010-10-27 5123 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
  UCR281510  Heteromeles arbutifolia Mitch Provance, Jeremiah George 2017-3-20 317- 105 Orange West Coyote Hills, Fullerton, vicinity of Utility Access Road W of Gilbert Street and N of Rosecrans Ave., on land previously occupied by oil fields. 131 Comment
  IRVC25170  Heterotheca grandiflora Fred M. Roberts, B. Fugle 1986-10-1 3148 Orange Laguna Hills; creek channel along Cabot Rd. ca. 1.0km N Pacific Park Pkwy. Southern Coastal 99 Comment
  RSA0075806  Heterotheca grandiflora Ken Greby 1985-5-17 38 Orange On hillsides behind PG and E substation located 2 km. SE from Laguna Canyon Rd., on El Toro Rd., adjacent to Leisure World. Comment
  SD8916  Heterotheca grandiflora George R. Kleeberger Nov 1875 Orange Santa Ana Valley Comment
  RSA93359  Heterotheca sessiliflora subsp. echioides F. W. Peirson 1924-8-29 5086 Orange 2.5 miles from Balboa on road inland along creek. Comment
  IRVC18573  Heterotheca sessiliflora subsp. fastigiata Karlin G. Marsh 1980-8-13 Orange S of Trabuco Canyon, Sect. 12, Hinricks Parcel. Santa Ana Mountains Comment
  UCD133095  Heterotheca sessiliflora subsp. sessiliflora J. C. Elmore 1929-9-26 2164 Orange San Juan Capistrano. Comment
  CAS-BOT-BC318990  Heterotheca sessiliflora var. echioides John Thomas Howell 1927-9-24 3113 Orange North side of Santa Ana Canyon 365 Comment
  UCR149496  Heterotheca subaxillaris Scott D. White, Michael Honer 2004-5-17 10383 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
  UCD150988  Hieracium argutum D. S. Park 2010-4-25 31 Orange Whiting Ranch Wilderness Park, along trail. 254 Comment
  HSC6595  Hirschfeldia incana J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  CAS-BOT-BC207961  Hoffmannseggia glauca Goodwin 1933-7-6 s.n. Orange Unspecified Comment
  SBBG128672  Hoita macrostachya R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49564 Orange San Juan Cyn at Lower Picnic Camp, just below Ortega Hwy (74); Santa Ana Mtns Comment
  RSA2919  Holodiscus discolor B. D. Stark 1931-6-10 2248 Orange east fork of Claymine Canyon, north end of Santa Ana Mts 305 Comment
  RSA6142  Holodiscus discolor E. R. Johnson 1933-6-22 5000 Orange 1/4 mile east and 1/2 miles south of northwest corner of Rancho Santa Ana in Sect. 16 305 Comment
  RSA663167  Holodiscus discolor R. E. Riefner 2000-6-22 20 -574 Orange NCCP North Ranch Policy Plan Area, NE property; along National Forest boundary, at powerline. 756 Comment
  UC1127989  Holodiscus discolor A. Lewis 1934-5-1 423 Orange Cleveland National Forest, Trabuco Canyon Trabuco Canyon; Cleveland National Forest, Trabuco Canyon 1280 Comment
  CAS-BOT-BC150003  Holodiscus discolor var. discolor B. D. Stark 1931-6-10 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
  RSA0042733  Hordeum glaucum David Barrios 1991-5-1 10 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir., Yorba Linda. 365 Comment
  RSA599591  Hordeum intercedens Fred M. Roberts, Nigel Hancock 1995-5-25 4946 Orange Costa Mesa: Fairview Park, just west of end of Canyon Drive, 0.1 km W Canyon School., UTM Z11 37 24 600mN, 4 12 700mE 24 Comment
  RSA642532  Hordeum intercedens D. E. Bramlet 1999-6-11 2808 Orange On slope 76m east of Cristianitos Creek and 488m northeast of the intersection of Avenida Pico and Cristianitos Road., UTM 11S 04 47 340mE X 37 02 080mN. 79 Comment
  RSA704076  Hordeum intercedens D. E. Bramlet, Fred M. Roberts 2003-5-15 3436 Orange Donna O'Neill Reserve. SE corner of the reserve 152m west of Cristianitos Rd. and 731m north of Pico. The site is 122m NW of the SDGE substation 98 Comment
  UCD85673  Hordeum intercedens D. E. Bramlet; Fred Roberts 2003-5-1 3423 Orange Donna O'Neill Reserve. Along north ridge trail. 305 m W of Cristianitos Rd., and 1 km N of the E-W access road. 128 Comment
  UCR150381  Hordeum intercedens D. E. Bramlet 1998-5-25 2627 Orange Coastal Plains & Basins/Los Angeles Basin region, 120 m N of the Newport Beach Library and 61 m west of McArthur Blvd., 914 m south of San Miguel Drive 49 Comment
  UCR158149  Hordeum intercedens Adrian Wolf 1998-5-4 204 Orange South Coast, Coastal Hills, Aliso/Woods Canyon Regional Park, trail to Dripping Cave, in Woods Canyon 1 km up from confluence with Aliso Canyon, west of Sheep Hills, south of Dripping Cave 134 Comment
  UCR158154  Hordeum intercedens Adrian Wolf 1998-4-21 127 Orange South Coast, Coastal Hills, Aliso/Woods Canyon Regional Park, Aliso Canyon 0.5 km east of mouth of Woods Canyon, north of access road 55 Comment
  UCR158161  Hordeum intercedens Adrian Wolf 1998-4-25 154 Orange South Coast, San Joaquin Hills, west Bommer Canyon ridge, 1 km NW of Signal Peak, 3 km east of San Joaquin Reservoir 287 Comment
  RSA651784  Hordeum leporinum Bob Edwards 1948-5-14 s.n. Orange Found on vacant lot in Orange. 59 Comment
  RSA708233  Hordeum marinum subsp. gussoneanum Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-4-10 6156 Orange Costa Mesa: Fairview Park, west of north end of Canyon Drive, c.a. 0.2km WNW Marison Special Education Center (Canyon Sch. on topos). 24 Comment
  RSA0089223  Hordeum murinum subsp. leporinum Fred M. Roberts 2014-4-21 7863 Orange South Coast: San Joaquin Hills: Upper Laguna Lake 1 (upper Laguna Lake), north basin. 113 Comment
  RSA789353  Horkelia cuneata subsp. puberula Naomi S. Fraga, Duncan S. Bell 2009-5-11 2720 Orange Chiquita Trail 762 Comment
  CAS-BOT-BC537314  Horkelia cuneata var. puberula Philip A. Munz 1936-4-20 14606 Orange Mt. Olympus, Laguna Beach 152 Comment
  RSA699285  Hydrocotyle umbellata J. R. Bruff 1930-10 s.n. Orange Santa Ana River, 1st Street. Comment
  RSA685932  Hypochaeris glabra Fred M. Roberts, David E. Bramlet 2003-3-27 5615 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, western slopes of Chistianitos Canyon, 0.8km N Sycamore Gate 0.15km W Cristianitos Road; (San Clemente). 139 Comment
  UCR102032  Hypochaeris glabra B. G. Pitzer 1997-3-25 3011 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  RSA0038505  Ipomoea cairica R. E. Riefner Jr. 2012-11-27 12 -563 Orange city of laguna Beach, South 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
  RSA638196  Isocoma menziesii Scott D. White 1998-10-19 7190 Orange Yorba Linda: Dissected south and SW-facing foothill slope ca. 1/2 mi S of Telegraph Cyn. Between Ohio St. and Fairmont. Proposed for development. 152 Comment
  UC1543132  Isocoma menziesii var. sedoides Donald G. Nelson 1935-6-27 332 Orange beaches s Corona del Mar (s of mouth of Newport Bay, on bluffs facing ocean) Comment
  RSA234537  Isocoma menziesii var. vernonioides James Henrickson 1970-9-5 5317 Orange 3.5 miles NW of Huntington Beach, 0.25 mile SE of Warner Ave. in Lower Littoral zone of Bolsa Chica Salt Marsh along outer Bolsa Bay. 0 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
  UC1424944  Isocoma menziesii var. vernonioides C. W. Tilforth 1976-10-21 1225 Orange slopes above Santa Ana River Canyon (on Rancho Santa Ana) Comment
  UC672256  Isocoma menziesii var. vernonioides H. L. Mason 1926-4-25 2906 Orange 5 mi s Laguna Comment
  RSA728657  Isocoma menziesii var. vernonioides R. E. Riefner 2006-10-24 04 -449 Orange City of Costa Mesa; E of Santa Ana River, NW 0.2 mi from Balboa Blvd and 19th St. 10 Comment
  CLARK-A1528-2387  Isomeris arborea John C. Roos 1937-2-23 1314 Orange Laguna Hills Comment
  IRVC308  Isomeris arborea J. Schram 1965-4-30 Orange Corona del Mar, Corona Highlands gully. Newport Beach Comment
  UC1543008  Isomeris arborea Donald G. Nelson 1935-4-14 293 Orange Newport Beach; along main coast highway, edge of mesa facing Newport Bay and the ocean Comment
  UC536931  Isomeris arborea Lawrence M. Booth 1932-5-12 1045 Orange Newport Bay 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
  JEPS34772  Jaumea carnosa L. M. Booth 1932-6-9 1183 Orange Newport Bay Comment
  RSA703682  Jepsonia parryi Fred M. Roberts, D. E. Bramlet 2004-11-5 6127 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, west slopes of Cristianitos Cyn., 0.79 km N Sycamore Gate and 0.18 km W Cristianitos Road. 146 Comment
  UCR24414  Jepsonia parryi John C. Roos 1936-10-9 2301 Orange Santa Ana Canyon Comment
  UCR229283  Juglans californica R. E. Riefner Jr. 2011-8-25 11- 112 Orange Trabuco Canyon, Trabuco Canyon Road c. 1 mi northwest of O'Neill Regional Park 319 Comment
  RSA0011061  Juglans californica I. L. Wiggins 1965-5-27 20310 Orange Near Los Angeles County Line, along Brea Canyon Road. Comment
  RSA0011064  Juglans californica E. W. Lathrop 1970-12-7 7146 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest 396 Comment
  UC1135931  Juglans californica var. californica H. E. Norton 1931-3-13 39 Orange Anaheim Corona (Anaheim) Quadrangle (Plot #13) Comment
  UC718137  Juglans californica var. californica C. B. Wolf 1934-9-21 6141 Orange lower end Brea Canyon; Puente Hills Comment
  CAS-BOT-BC354339  Juglans hindsii R. E. Riefner, Jr. 2010-9-8 10 -124 Orange City of Laguna Beach, Laguna Canyon, ca 0.25 mi S of Sun Valley Dr. on E side of Laguna Canyon Rd. 65 Comment
  RSA781304  Juglans hindsii A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37203 Orange Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., near Agustine Staging Area at south foot of Blue Diamond Haul Rd. bridge over Santiago Canyon Rd. 253 Comment
  SD253480  Juglans hindsii R. E. Riefner Jr. 2010-9-8 10 121 Orange City of Laguna Beach, Laguna Canyon, ca 0.15 mile S of El Toro Road on E side of Laguna Canyon Road. 74 Comment
  UCD169190  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
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May 26 2020
  UCD169219  Juglans hindsii R. E. Riefner Jr. 2015-7-2 15- 191 Orange City of Laguna Beach, Laguna Canyon, ca. 0.25 mi S of El Toro Rd. on E side of Laguna Canyon Rd. 75 Comment
  RSA0022439  Juglans regia Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49798 Orange Santa Ana Mountains: Trabuco Canyon, below Yaeger Mesa Comment
  RSA683232  Juncus acutus Scott D. White, Matt Carlton 2003-11-20 9861 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (Dana Point) 24 Comment
  RSA542517  Juncus acutus subsp. leopoldii Fred M. Roberts, W. Ferren 1987-4-8 3358 Orange Upper Newport Beach Back Bay, west side, North Star Beach, 0.8 km N Coney Island. 0 Comment
  UCR191445  Juncus bufonius A. C. Sanders, Fred M. Roberts 2008-4-8 34728 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  UCSB48193  Juncus macrophyllus Roberts, Fred 1981-6-26 Orange Santa Ana Mts; east fork Viejo Cyn; 0.6 km N Calif. Rte. 74; 2.7 km E San Juan Guard Station 326 Comment
  POM201838  Juncus mexicanus L. M. Booth 1932-12-26 1381 Orange Bolsas Marsh near coast highway. Comment
  RSA594873  Juncus mexicanus Fred M. Roberts, W. R. Ferren 1991-12-1 4828 Orange Aliso-Wood Canyons Regional Park: Lower Wood Canyon, just above confluence with Alins Canyon, ca. 3.5 kilometers S Multon Peak. 32 Comment
  RSA368294  Juncus oxymeris F. R. Fosberg 1931-6-21 S- 5152 Orange Silverado Canyon. Santa Anita Mts. Comment
  UCR247891  Juncus patens Fred M. Roberts 2012-7-18 7662 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
  RSA50308  Juncus phaeocephalus E. K. Balls 1949-5-9 13467 Orange [Rancho Santa Ana] Botanic Garden, Santa Ana River Canyon. 198 Comment
  RSA0014070  Juncus textilis Fred M. Roberts, R. E. Riefner 2010-5-30 7023 Orange Lomas de Santiago: Loma Ridge, Hanging Man s Tree Cyn., along Hanging Man s Tree Cyn. Rd., c.a. 0.4km W Santiago Cyn. Rd., and 1.2 km N Bolero Lookout. 372 Comment
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Sep 21 2020
  UCR153474  Juncus textilis R. E. Riefner Jr., A. Wolf 2000-1-24 20- 108 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of Santiago Creek and immediately south of major stream fork 305 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
  POM21178  Juncus xiphioides Helen D. Gels 1902-11 s.n. Orange Santa Ana [River?] Comment
  JEPS15116  Keckiella antirrhinoides R. St. John 1931-3-31 201 Orange Mouth of Silverado Canyon; Corona Quad. 457 Comment
  UCR50731  Keckiella antirrhinoides Steve Hampson 1988-5-12 s.n Orange Santa Ana Mtns, Harding Canyon above Modjeska Reservoir. Streamside 488 Comment
  CAS-BOT-BC235529  Keckiella antirrhinoides var. antirrhinoides Robinson; Crocker 1916-3-28 999 Orange Santa Ana Mt Comment
  RSA401708A  Keckiella cordifolia N. C. Cooper 1949-5-1 3938 Orange San Juan Canyon 762 Comment
  UCR227631  Keckiella cordifolia Robt. L. Allen 2003-6-22 12288 Orange Santa Ana Mountains, west-facing flank of Santiago Peak, near the saddle between Santiago and Modjeska Peaks, along North Main Divide Road 1523 Comment
  UCR36089  Keckiella cordifolia D. C. Michener 1980-7-14 s.n. Orange Santa Ana Mtns., Starr Ranch Audubon Sanctuary. Crow Creek, c. 1.3 miles north of confluence with Bell Canyon Comment
  JEPS1808  Kickxia elatine Frank W. Peirson 1927-9-25 7676 Orange flats below Wintersberg Comment
  RSA718971  Kickxia elatine Fred M. Roberts, Robert L. Allen 2006-10-8 6409 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
  RSA184078  Kochia scoparia I. L. Wiggins 1966-4-3 20576 Orange Railroad embankment near entrance to Rancho Santa Ana. Comment
  POM7129  Koeleria macrantha P. A. Munz, L. T. Street 1919-5-3 2622 Orange Santa Ana River Canyon. Comment
  RSA629044  Koeleria macrantha Valerie L. Soza, LeRoy Gross 1999-6-10 528 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road. 1554 Comment
  RSA72  Koeleria macrantha J. T. Howell 1928-3-17 879 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  UCR209381  Koeleria macrantha Fred M. Roberts, Linda Farley 2008-3-28 6824 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
  SEINET4559544  Koelreuteria bipinnata T. B. Salvato, Katie Kurtz, Mitch Provance 2006-1 1903 Orange South Coast; Irvine, San Diego Creek Flood control channel between Campus Drive and Michelson Drive 6 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
  UCSB57086  Lagophylla ramosissima Roberts, Jr., Fred 1985-7-26 Orange Santa Ana Mtns.; Main Divide Truck Trail, 0.5 km. N Blue Jay Campground; 2.2 km. ESE Los Pinos Pk., UTM 3724000m N, 45827m E 1005 Comment
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Feb 22 2019
  SFV16193  Lamarckia aurea R. K. Stachelek, B. Anderson, F. Schropshire 1995-3-1 43 Orange Newport Beach - Santa Ana city border. Along University Road footpath about 0.25 miles from intersection with Irvine Ave. Comment
  CAS-BOT-BC338905  Lasthenia californica LeRoy Abrams 1903-4-18 3265 Orange Trabuco arroyo near Capistrano Comment
  CAS-BOT-BC338906  Lasthenia californica Baker 1904-4-1 4088 Orange Anaheim Comment
  CAS-BOT-BC338907  Lasthenia californica Frank W. Peirson 1925-4-11 5746 Orange 5 miles south of Laguna Beach Comment
  CAS-BOT-BC338908  Lasthenia californica Agnes M. Bowman 1899-6-1 s.n. Orange Orange Comment
  SEINET7287976  Lasthenia californica C. B. Wolf 1932-3-8 Orange 1/2 Mile north of Corona Del Mar. Bordes of Newport Bay 8 Comment
  OBI81435  Lasthenia glabrata Unknown 2013-3-10 13 -39 Orange City of Lake Forest, along El Toro Rd. at Destry Rd. 211 Comment
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Apr 7 2021
  UCR191779  Lasthenia glabrata A. C. Sanders, Fred M. Roberts 2008-3-25 34571 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
  CAS-BOT-BC329171  Lasthenia glabrata subsp. coulteri E. R. Johnson 1931-4-7 1937 Orange East end camp, Bryant Ranch, Los Alamitos 9 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
  RSA0039565  Lasthenia glabrata subsp. coulteri R. H. McArthur 1934-3-8 s.n Orange S. of Ed Martin's Airport. Comment
  JEPS10157  Lasthenia gracilis Alice King 1908-1-1 Orange near Santa Ana; Anaheim plains Comment
  POM294108  Lasthenia gracilis Lyman Benson 1946-4-27 12056 Orange Corona Del Mar; Drainage area: Pacific Ocean. 15 Comment
  RSA627758  Lasthenia gracilis Scott D. White 1998-3-24 6230 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
  UCSB48051  Lasthenia gracilis Fritzke, S.; Roberts, Jr., Fred 1982-4-3 Orange Dana Point; hills, 1.0 km. N of Dana Hills High School; 1.9 km. W of Marco Forster Junior High School 100 Comment
  SEINET5327270  Lathyrus laetiflorus R. Nelson, Baumann; Kondratieff; Sargent 1988-1-12 5117 Orange San Juan Creek at Lower San Juan Campgroud, Cleveland National Forest. 366 Comment
  HSC14711  Lathyrus vestitus subsp. alefeldii S. M. Clapp 1966-4-10 27 Orange 3 mi. into Black Star Canyon 152 Comment
  RSA29612  Lathyrus vestitus subsp. alefeldii Grout, Grout 1905-04 s.n. Orange Aliso Canyon Comment
  UCSB47580  Lathyrus vestitus var. vestitus Roberts, Fred 1980-4-3 Orange San Juan Canyon, Hwy. 74, 0.4 km. NNE Lower San Juan Picnic Ground, Santa Ana Mtns. 420 Comment
  RSA794333  Lavandula dentata Justin M. Wood 2010-3-31 1451 Orange Santa Ana Canyon: Chino Hills State Park property just west of Green River Golf Course on bluff south of the river. 131 Comment
  UCR17212  Lavatera cretica Emily Carlton 1966-4-18 51 Orange Pacific coast, Laguna Beach, corner of Agate and Santa Cruz Streets. 30 Comment
  UC1543193  Layia platyglossa Donald G. Nelson 1935-3-30 196 Orange near mouth Brea Canyon (n of Brea, on Tonner Lease, in northern part of county); on Tonner Lease Comment
  UCR223431  Layia platyglossa Dick Newell, Don Millar 2011-3-1 074 Orange Peninsular Range; Santa Ana Mtns. Foothills, MWD road east of outdoor education property, 1.6 mi. NW (312 deg. ) of Irvine Lake dam 258 Comment
  RSA17019  Layia platyglossa subsp. campestris Percy C. Everett 1935-4-15 6462 Orange 8/10 mile E of Atwood on S side of Santa Fe RR. 107 Comment
  RSA92179  Layia platyglossa subsp. campestris F. W. Peirson 1925-4-11 5747 Orange 5 miles south of Laguna Beach. Comment
  RSA705543  Leersia oryzoides R. E. Riefner Jr. 2003-12-14 3 -458 Orange Featherly Regional Park, Santa Ana River, vicinity of La Palma Avenue and Lomas de Yorba West, S of Gypsum Canyon Road. 105 Comment
  IRVC26689  Lepechinia ganderi Mark A. Elvin 2004-4-4 3231 Orange UCI Arboretum Southern Coastal 15 Comment
  POM180599  Lepidium lasiocarpum L. R. Abrams 1917-6-23 6569 Orange Balboa Comment
  POM183940  Lepidium lasiocarpum P. A. Munz 1932-3-29 12191 Orange Costa Mesa. Comment
  UCR186687  Lepidium latifolium T. B. Salvato, Katie Kurtz, Mitch Provance 2006-10-15 1908 Orange South Coast, Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Drive 6 Comment
  UCR247905  Lepidium latifolium Fred M. Roberts 2013-6-12 7789 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
  UCR5146  Lepidium nitidum Barbara T. Gittins, O. F. Clarke 1966-3-19 898 Orange Pacific slope, Irvine Ranch, east of University of California Irvine campus, Newport Beach 91 Comment
  RSA697453  Lepidium nitidum Pomeroy 1929-2-23 79 Orange Near El Toro. Comment
  OBI70646  Lepidium pinnatifidum Louis C. Wheeler 1947-5-4 6476 Orange 4.5 mi S of Santa Ana: South Main Street extension, 0.8 mi S of Newport Ave Comment
  RSA362301  Lepidium pinnatifidum Fred M. Roberts 1985-6-2 1836 Orange San Clemente: El Camino Real, 0.2 km by road WNW Ave Pico. 5 Comment
  UCR239647  Lepidium strictum Fred M. Roberts 2012-5-9 7552 Orange Santa Ana Mountains, Lake Forest, near Serrano Creek utility road, 0.3 m south-southwest of intersection of Commercentre and Dimension Drives 206 Comment
  UCSB52926  Lepidium virginicum Roberts, Jr., Fred 1983-3-16 Orange Laguna Beach, Sycamore Hills, central ridge; 1.1 km NNE jct. El Toro and Laguna Cyn. Rds.; 5.4 km. ESE Signal Peak 170 Comment
  CAS-BOT-BC60085  Lepidium virginicum var. menziesii Helen D. Geis 1902-1-1 531 Orange Santiago Creek. Comment
  POM202605  Lepidium virginicum var. pubescens L. M. Booth 1932-5-24 24 Orange West Side of Newport Lagoon. Comment
  RSA703698  Lepidium virginicum var. robinsonii Fred M. Roberts, Arthur Davenport 2004-2-20 6025 Orange Santa Ana Mtns.: San Juan Canyon, SR 74, south side of road, 0.62 km SW San Lower San Juan Picnic Ground; 1.89 km WNW Sitton Peak. 390 Comment
  RSA1446  Lepidospartum squamatum J. T. Howell 1929-2-6 1223 Orange Floor of Claymine Canyon, Santa Ana Mts 152 Comment
  UCR58731  Lepidospartum squamatum Reid Moran 1975-11-21 22741 Orange Santa Ana Mtns., bottom of lower Trabuco Canyon Comment
  UCSB48209  Lepidospartum squamatum Roberts, Jr., Fred 1981-7-8 Orange Rancho Mission Viejo; Calif. Rte. 74, 10 km. by road ENE San Juan Capistrano 101 Comment
  RSA161259  Leptochloa fusca subsp. uninervia P. H. Raven 1961-10-15 16851 Orange Anaheim: Santa Ana River Bed at Anaheim Street crossing 61 Comment
  RSA719404  Leptochloa fusca subsp. uninervia Fred M. Roberts, Robert L. Allen 2006-10-8 6431 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
  RSA698316  Leptodactylon californicum Minor Warne 1934-4-7 s.n. Orange Santiago Canyon. Comment
  UCR230226  Leptodactylon californicum Dick Newell, Don Millar 2011-3-15 084 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash along Limestone Cyn. Rd. 252 Comment
  SEINET6969968  Leptodactylon californicum W. P. Vestal, A. G. Vestal 1955-3-24 3461 Orange Trabuco Canyon, about 5 miles east of El Toro. Comment
  RSA759202  Leptosiphon ciliatus Robt. Allen, Reginald Durant 2008-5-16 s.n. Orange Maple Springs Saddle. Inside region of 180 degree bend in road. On N-facing slope 1382 Comment
  SD251267  Leptosiphon floribundus R. F. Thorne 1977-11-21 49985 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp. Comment
  UCR237915  Leptosiphon liniflorus Dick Newell, Don Millar, Ron Pennington 2012-7-24 282 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago; Hangmans Tree Rd., 0.23 mi. due west of Santiago Canyon Rd. 363 Comment
  RSA764445  Leptosiphon parviflorus Doris Bowers 1971-4-19 1698 Orange Black Star Canyon Indian Site 762 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
  UCR186586  Lessingia filaginifolia Robert DeRuff 1995-1 s.n. Orange Southern Coast, Newport Beach, Newport Back Bay, Eastbluff bench 12 Comment
  RSA651793  Leymus condensatus Jack D. Ingwersen 1962-5-14 s.n. Orange Brea Canyon. Comment
  UC712169  Leymus condensatus Charles B. Fiker 1944-7-7 3137 Orange on Bill Rochester's ranch Trabuco Canyon Comment
  RSA0018625  Leymus condensatus R. H. McArthur 1934-5-19 s.n. Orange Trabuco Canyon Bottom. Comment
  CAS-BOT-BC130580  Lilium humboldtii John Thomas Howell 1927-7-3 2645 Orange Claymine [Canon] Canyon, n. Santa Ana Mts. 304 Comment
  UC1544781  Limonium arborescens D. Seigler, E. Rodriquez & B. Sanchez 1978-5-14 10963 Orange N of San Clemente (rest area on I-5) Comment
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Dec 5 2013
  RSA401668A  Limonium californicum var. mexicanum F. W. Peirson 1924-8-24 s.n. Orange 2.5 miles from Balboa on road inland. Comment
  RSA689534  Limonium duriusculum R. E. Riefner 2002-5-4 20 -99 Orange Upper Newport Bay, Jamboree Rd at Bayview Dr. 15 Comment
  RSA161163  Limonium perezii Peter H. Raven 1957-9-28 11394 Orange Laguna Beach. Comment
  UCR106280  Limonium perezii B. G. Pitzer, M. Georgiady 1997-4-5 3091 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
  RSA671248  Limonium ramosissimum R. E. Riefner 2002-5-4 20 -92 Orange Upper Newport Bay, Jamboree Rd at Bayview Dr. 15 Comment
  UCR200663  Limonium ramosissimum Daniel Sanchez-Mata 2006-7-1 s.n. Orange Laguna Niguel, Dana Point Highlands, Crown Valley Parkway at Pacific Island Drive 70 Comment
  CDA1081  Limonium sinuatum D. G. Kelch 2006-12-9 6 .545 Orange Along Newport Back Bay Dr. in side canyon. Comment
  CAS-BOT-BC226772  Linanthus californicus Marcus E. Jones 1926-3-10 s.n. Orange Near Santa Ana Canon [Canyon] Comment
  CHSC13481  Linanthus californicus T. N. Casale 1974-4-11 5 Orange On side of road, ca. 7.3 mi ne of the Mission San Juan Capistrano on Hwy 74. 243 Comment
  HSC25236  Linanthus californicus Richard Spjut 1972-2-22 2229 Orange W border of the Cleveland National Forest in Santa Ana Mtns. along Hwy. 74 305 Comment
  UC1618056  Linanthus floribundus Donald G. Nelson 1935-7-6 203 Orange San Juan Canyon Comment
  UCR151030  Linanthus parviflorus Scott D. White 1997-5-6 5036 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
  UCR209356  Linaria canadensis var. texana Fred M. Roberts 2008-4-8 6849 Orange Lomas de Santiago, Loma Ridge, Upper Dripping Springs Cnyn, 1.0 km northeast of Bee Peak, Irvine Ranch Conservancy 458 Comment
  SFV17364  Lithophragma affine J. N. Hogue, J. D. Dilley, D. L. Bishop 1998-4-9 104 .3 Orange Santa Ana Mountains San Juan Canyon, 0.5 miles southwest of Lower San Juan Picnic Area at highway marker 14. 366 Comment
  RSA735257  Lithophragma affine Wilma Griset 1931-3-15 31 Orange Eagle Rock Comment
  RSA599176  Lithophragma affine subsp. affine Scott D. White 1997-3-28 4830 Orange Above Modjeska Canyon, proposed water tank site 425 Comment
  IRVC21406  Lobelia dunnii var. serrata A. S. Boughey 1968-7-9 405 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  RSA731945  Lobularia maritima Fred M. Roberts, Sandy Leatherman 2007-11-27 6690 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. ca. 0.3 km S Fairmont Blvd. 118 Comment
  CAS-BOT-BC283494  Lolium multiflorum Carl B. Wolf 1932-7-7 3858 Orange Bryant Ranch, Bryant Ave, at pump house, 0.5 mile E of Los Alamitos Blvd Comment
  CAS-BOT-BC269105  Lolium perenne Ira L. Wiggins 1965-9-26 20259 Orange At west end of Orangethorpe Estates subdivision, near Atwood Comment
  CAS-BOT-BC269106  Lolium perenne Ira L. Wiggins 1965-10-24 20290 Orange At corner of Yorba Linda and State College Boulevards, Fullerton Comment
  CAS-BOT-BC269107  Lolium perenne Carl B. Wolf 1932-6-13 3714 Orange Fullerton, Rose Drive 53 Comment
  CAS-BOT-BC269108  Lolium perenne Scott D. White 1997-3-26 4810 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
  RSA226631  Lolium perenne subsp. multiflorum Christopher Davidson, G. Benny 1971-6-15 1547 Orange Brea Canyon, 0.5 mile N of Central Avenue, along Brea Creek, near Brea Oil Co. wells. Comment
  RSA6130  Lolium perenne subsp. multiflorum C. B. Wolf 1932-6-13 3728 Orange Storm drain at Malvern and Nicholas Aves; Fullerton. 53 Comment
  CAS-BOT-BC271070  Lolium temulentum E. R. Johnson 1932-5-18 3638 Orange East edge of grain field bordering Rancho, Rancho Santa Ana Botanic Garden 198 Comment
  UCR86995  Lomatium dasycarpum B. G. Pitzer, Stu Hemstreet 1992-5-27 1956 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, along Forest Service Road 3S04 to Blue Jay Group Campground, off Hwy 74 (Ortega Hwy), c. 2 mi west of El Cariso Campground 765 Comment
  RSA773521  Lomatium dasycarpum subsp. dasycarpum Fred M. Roberts 1999-5-3 5212 Orange Lomas de Santiago: Loma Ridge, Central Limestone Canyon, west slope, 2.2 km NW Bolero Lookout and 0.8 km NE Bolero Spring. 397 Comment
  LA210539  Lomatium lucidum B. R. Lower; 1954-4-25 sn Orange Laguna Beach Comment
  RSA529  Lomatium lucidum J. T. Howell 1927-6-26 221 Orange Claymine Canyon near Sierra Peak 366 Comment
  RSA751430  Lonicera subspicata A. C. Sanders, Fred M. Roberts 2008-7-3 35670 Orange Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 365 Comment
  UCR193842  Lonicera subspicata A. C. Sanders, Fred M. Roberts 2008-7-16 35858 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  POM50583  Lonicera subspicata var. denudata Helen D. Geis 1900-1 518 Orange Hills back of Santa Ana. Comment
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Aug 8 2010
  RSA663159  Lonicera subspicata var. denudata R. E. Riefner 2000-6-1 20 -458 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  SBBG104044  Lonicera subspicata var. denudata B. Pitzer 1992-5-21 1940 Orange St Hwy 74, 1 mi uphill from 2000 ft marker, and to the left ca. 1 mi on old rd Comment
  RSA754059  Lotus purshianus A. C. Sanders, Fred M. Roberts 2008-7-16 35854 Orange Lomas de Santiago, upper Hangmans Tree Canyon. 395 Comment
  RSA697975  Lotus salsuginosus Olive Van Meter s.n. Orange Black Star Canyon. Comment
  SEINET3562996 Image available Lotus salsuginosus Lawrence M. Booth 1932-5-19 1073 Orange Newport Bay Comment
  UCR222416  Lotus salsuginosus D. E. Bramlet 2008-3-26 4118 Orange Peninsular Range; Santa Ana Mountains, Bee Canyon, Bowerman landfill site. 202 m south of the Bee Canyon access road and 151 m west of the active landfill entrance 295 Comment
  JEPS55886  Lotus scoparius Alice King May 1902 Orange Newport Comment
  RSA234521  Lotus scoparius James Henrickson 1970-7-24 5005 Orange 3 miles NW of Huntington Beach on sandy ''Rabbit'' Island in Bolsa Chica Salt March near Inner Bolsa Bay. 1 Comment
  RSA393  Lotus scoparius J. T. Howell 1927-6-1 4 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  UCR223427  Lotus scoparius subsp. scoparius Dick Newell, Don Millar 2011-2-15 059 Orange South Coast, San Joaquin Hills, Laguna Wilderness Park, along Stagecoach Trail 131 Comment
  JEPS55878  Lotus strigosus Alice King Mar 1908 Orange Anaheim plains Anaheim Comment
  UC1544837  Lotus strigosus A. G. Vestal 1962-4-8 Orange 1.3 mi n Elsinore Comment
  UCR103215  Lotus strigosus Scott D. White 1997-2-19 4694 Orange Santa Ana Mtns, above Modjeska Canyon; proposed water tank site 488 Comment
  IRVC18659  Lotus strigosus var. hirtellus Gordon A. Marsh 1981-4-15 Orange UCI Ecological Preserve; north-facing slope. Irvine Comment
  RSA737535  Lotus strigosus var. strigosus Fred M. Roberts 2008-3-12 6727 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  CDA1047  Ludwigia peploides D. G. Kelch 2006-12-9 6 .561 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  SD227862  Ludwigia repens Scott D. White, Brian Leatherman 1997-6-12 5343 Orange East of San Juan Capistrano: San Juan Creek between Hwy 74 jtn. 45 Comment
  RSA585490  Lupinus arboreus var. arboreus R. E. Riefner 1994-5-22 94 -384 Orange San Mateo Unit, San Onofre State Beach, west of Pico Avenue. Comment
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Nov 19 2013
  SD227815  Lupinus bicolor B. Pitzer 1997-4-15 3147 Orange Crystal Cove State Park, Along Moro Canyon Trail, from beginning to a point ca. 1.75 mi. up the canyon 49 Comment
  SEINET10452686  Lupinus excubitus subsp. hallii Stark 1933-2-3 STARK 19497 Orange Garden #6455 (from 1780 many generations). Comment
  UC82077  Lupinus excubitus var. hallii C. F. Baker 1903-4-1 4102 Orange Anaheim Comment
  RSA0042559  Lupinus hirsutissimus Paul Shirokawa 1998-4-24 6 Orange Cleveland National Forest; Trabuco Ranger District, 2.9 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 975 Comment
  CAS-BOT-BC94726  Lupinus latifolius R. C. Wenk; P. Hopkinson; M. Hammond; P. Brownsey 2008-3-24 719 Orange Chino Hills State Park. South Ridge Road W of San Juan Hill, going W from Equestrian Staging Area. Top of ridge 1450 Comment
  POM2601  Lupinus longifolius Philip A. Munz 1918-5-4 2201 Orange Laguna Beach. Comment
  RSA4866  Lupinus longifolius E. R. Johnson 1932-4-15 2957 Orange Rancho Santa Ana, 1mile NWof Roundtop (section 16) 457 Comment
  RSA797239  Lupinus longifolius Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49801 Orange Santa Ana Mountains: Trabuco Canyon 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
  UCSB52913  Lupinus longifolius Roberts, Fred; Marsh, K. 1983-5-13 Orange San Joaquin Hills; Laguna Canyon along Laguna Canyon Road, 1.7 km. N Thruston School; 6.4 km. SE Signal Peak 50 Comment
  RSA682918  Lupinus microcarpus Scott D. White, Amanda Duchardt 2003-5-1 9152 Orange Santa Ana Mtn Foothills; slopes above the west side of Canada Gobernadora and adjacent small canyon to the west. 76 Comment
  UCR177285  Lupinus microcarpus Scott D. White, Amanda Duchardt 2003-5-1 9152 Orange Santa Ana Mountains, Slopes above the west side of Canada Gobernadora and adjacent small canyon to the west 122 Comment
  SEINET3131617  Lupinus sparsiflorus Unknown 1903-4-19 3277 Orange Near San Juan Comment
  UCR191351  Lupinus sparsiflorus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34638 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
  IRVC2339  Lupinus sparsiflorus subsp. sparsiflorus J. Morgan 1965-4-14 s.n. Orange Laguna Canyon. Southern Coastal Comment
  RSA649056  Lupinus sparsiflorus subsp. sparsiflorus D. E. Bramlet 2000-4-21 2991 Orange Ridge 488m northeast (above) the MWD access road. the site is 1.3 km west of Blind Canyon and 640m north of Irvine Park. 268 Comment
  IRVC22003  Lupinus succulentus Fred M. Roberts, Gordon Marsh 1985-3-12 1525 Orange mesa west of Ave. Pico and north of El Camino Real, 3.2km SSE Coyote Bluff; 0.6km E Bench Mark 16 (sect. 32), San Clemente 37 Comment
  IRVC2343  Lupinus succulentus Tony Price 1965-4-17 HS 0414 Orange Black Star Canyon. Santa Ana Mountains Comment
  RSA507484  Lupinus succulentus Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, head of Gypsum Canyon 412 Comment
  UCR98905  Lupinus succulentus Scott D. White 1993-2-17 1051 Orange Vicinity of Olinda, near city of Brea, immediately north of Carbon Cyn Rd & east of Placentia Ave.; c. 1 mi. (airline) SSE of Tonner Cyn. 183 Comment
  RSA263661  Lupinus succulentus E. W. Lathrop 1966-3-23 6106 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuca District. Comment
  IRVC8860  Lupinus truncatus Charles W. Sexton 1964-5-17 s.n. Orange Holy Jim Canyon. Santa Ana Mountains Comment
  SD143894  Lupinus truncatus Scott D. White 1997-3-28 4851 Orange Santas Ana Mountains; above Modjeska Canyon. 424 Comment
  RSA0055059  Lupinus truncatus James R. Shevock 1970-3-25 66 Orange Santa Ana Mountains. 381 Comment
  RSA615548  Lycium andersonii Sandy Leatherman, Brian Daniels 1994-12-16 s.n. Orange Lomas de Santiago: west of Lomas Ridge, 1.2 km NE Siphon Reservoir dam. 183 Comment
  CAS-BOT-BC413809  Lycium brevipes R. E. Riefner, Jr. 2008-1-26 08 -10 Orange City of Newport Beach, Corona del Mar, Buck Gully, near Little Corona Beach, slope adjacent to restroom facility, vicinity of Poppy Ave. and Ocean Blvd. 15 Comment
  LA209655  Lycium californicum B. R. Lower; 1954-4-25 sn Orange Laguna Beach Comment
  POM4215  Lycium californicum D. L. Crawford 1916-7-24 741 Orange Laguna Beach. Comment
  RSA0071939  Lycium californicum CNPS Accuracy Assessment Team 2014-7-22 6468 .1 Orange Crystal Cove State Park. Comment
  OBI33516  Lysimachia arvensis Nancy J. Moriarty 1973-5-27 730527 -3 Orange San Clemente State Beach 1 mi S of the end of Ave Califia in the sand below the bluffs Comment
  RSA0014844  Lythrum californicum Scott D. White 1998-5-31 6570 Orange University of California Irvine Campus, Southwest of Farm School site (now proposed as Student Rec. Ctr.). 37 Comment
  RSA0014841  Lythrum californicum Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49631 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  UCR193437  Lythrum hyssopifolia A. C. Sanders, Fred M. Roberts 2008-5-6 35238 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, south of Santiago Reservoir 351 Comment
  RSA7394  Malacothamnus densiflorus var. densiflorus Carl B. Wolf 1933-8-24 5385 Orange along road south of Bedford Peak on main divide. 1098 Comment
  RSA647941  Malacothamnus fasciculatus Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-1 17 Orange 1/2 mile south of Chino Hills State Park. 198 Comment
  RSA708288  Malacothamnus fasciculatus Scott D. White, Jennifer H. Jones 2005-3-31 10861 Orange South Coast: City of Laguna Beach. 549 Nyes Place. Proposed home site on ca. 0.5 acre. 91 Comment
  UCR103710  Malacothamnus fasciculatus B. G. Pitzer, T. Tennant 1997-11-8 3364 Orange San Joaquin Hills, Crystal Cove State Park, along Moro Canyon Trail, from beginning to a point c. 1.75 mi. up the canyon. 85 Comment
  RSA95321  Malacothamnus fasciculatus F. W. Peirson 1924-5-31 4662 Orange Sea bluffs at Laguna Beach. Comment
  CDA23124  Malacothrix saxatilis Mark A. Elvin, D. G. Kelch 2006-12-9 5328 Orange Southern Coastal; Newport Backbay; along Bayside Drive ca. 500 meters northeast of road to CA Department of Fish and Game office. Comment
  RSA743460  Malacothrix saxatilis var. saxatilis Fred M. Roberts 2008-7-10 7068 Orange Dana Point: Dana Point Headlands, CNLM Preserve, along north slopes above Dana Strand Beach, 0.8km WNW Marine Institute, Dana Point Harbor. 45 Comment
  RSA0027428  Malacothrix saxatilis var. tenuifolia Fred M. Roberts 2013-7-18 7661 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
  CAS-BOT-BC347889  Malacothrix saxatilis var. tenuifolia Philip A. Munz 1950-8-5 15478 Orange Rancho Santa Ana Botanic Garden, on Santa Ana River 198 Comment
  RSA0061166  Malacothrix saxatilis var. tenuifolia Robt. Allen 2007-8-11 s.n. Orange Santa Ana Mountains region: Silverado Canyon. Along Maple Springs Road (5S04), circa 3.5 road miles N of Forest Gate. Near small bridge over creek, end of paved road. 913 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
  RSA678507  Malephora crocea Valerie Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary D. Wallace 2001-4-4 1106 Orange Seal Beach National Wildlife Refuge: Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  CAS-BOT-BC167852  Malosma laurina John Thomas Howell 1927-7-24 2826 Orange Sandy floor of Claymine [Canon] Canyon, n. Santa Ana Mts. 152 Comment
  RSA734919  Malosma laurina A. C. Sanders, Fred M. Roberts 2008-6-17 35462 Orange Lomas de Santiago, Loma Ridge on Hicks Canyon Haul Road, c. midway between Foothill Transportation Corridor and Santiago Cyn. Rd. 335 Comment
  UCD116855  Malosma laurina P. B. Kennedy 1925-1-12 s.n. Orange Irvine Range. Comment
  RSA801481  Malva Keith E. Hoffmaster 1928-4-16 627 Orange Santa Ana. Comment
  JEPS68647  Malva parviflora Lawrence M. Booth 1932-5-19 1058 Orange Newport Bay Comment
  RSA759167  Malva parviflora A. C. Sanders, Fred M. Roberts 2008-6-17 35456 Orange Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  UCSB48098  Malva parviflora Roberts, Fred 1981-4-11 Orange Ortega Hwy: Hwy 74 5.2km E San Juan Capistrano near San Juan Creek crossing 52 Comment
  RSA0031758  Malva parviflora Robert F. Thorne 1977-11-21 50816 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  POM202032  Malvella leprosa L. M. Booth 1932-6-9 1174 Orange Santa Ana River, 0.5 mile from ocean Comment
  POM2951  Malvella leprosa D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon 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
  RSA433882  Malvella leprosa Albert J. Perkins 1912-8-6 s.n. Orange Anaheim. Comment
  CDA25897  Mangifera indica Mark A. Elvin, D. G. Kelch 2006-12-9 5322 Orange Southern Coastal; Newport Backbay; along Bayside Drive ca. 100 miles west of Eastbluff Drive. Comment
  CHSC19526  Marah macrocarpa T. Casale 1974-4-11 1 Orange Ca. 4.1 mi ne of the Mission SanJuan Capistrano on Hwy. 74. 170 Comment
  RSA441214  Marah macrocarpa M. B. Dunkle 1933-3-5 3092 Orange San Juan Canyon. Comment
  RSA488  Marah macrocarpa J. T. Howell 1927-6-6 45 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  RSA696064  Marah macrocarpa Keith E. Hoffmaster 1928-12-30 s.n. Orange San Onofre. Comment
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Nov 19 2013
  UCSB16370  Marah macrocarpa Gerhart, Janet 1963-2-22 Orange 0.5 miles above locked gate on dirt road, Trabuco Canyon, 17.5 miles by road E of U.S. Highway 101 at El Toro Marine Base; 2.5 miles SE of Santiago Peak 396 Comment
  UC537163  Marrubium vulgare Lawrence M. Booth 1932-5-24 1107 Orange Newport Bay 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
  UCR240180  Marsilea drummondii R. E. Riefner Jr. 2008-6-22 08- 209 Orange city of Yorba Linda, Santa Ana Canyon, Santa Ana River, La Palma Avenue near Old Village Road 96 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
  POM49391  Matricaria matricarioides L. R. Abrams 1901-6-12 1772 Orange Laguna. Comment
  UCR191468  Matricaria matricarioides A. C. Sanders, Fred M. Roberts 2008-4-8 34733 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  UCSB52896  Meconella denticulata Roberts, Fred; Allen, R. 1983-4-10 Orange Santa Ana Mts; Upper Hot Springs Canyon; 3.1km WSW Falcon Group Camp; 2.5 km S Los Pinos Peak 790 Comment
  RSA771517  Meconella oregana var. denticulata Keith E. Hoffmaster 1934-4-22 181 Orange Santa Ana Mountains Comment
  RSA732050  Medicago A. C. Sanders, Fred M. Roberts 2008-4-8 34739 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
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Oct 19 2016
  IRVC2372  Medicago polymorpha Robin Hobson 1965-4-10 s.n. Orange Santa Ana Heights; 2431 Mesa Dr. Southern Coastal Comment
  IRVC2388  Medicago polymorpha Randy Acevedo 1965-5-5 HS 413 Orange Newport Beach; [Newport] Back Bay. Southern Coastal Comment
  UCD107890  Medicago polymorpha Ira L. Wiggins 1966-3-4 20492 Orange Shoulder of Peralta Ave. near junction of Newport Freeway and Riverside Highway. Comment
  UCR191419  Medicago polymorpha A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34657 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
  POM348035  Medicago polymorpha E. S. Spalding 1923-1-1 s.n. Orange Laguna Beach. Comment
  RSA746481  Medicago rigidula R. E. Riefner Jr. 2008-5-22 08 -120 Orange Unincorporated land between the Cities of Lake Forest nd Rancho Santa Margarita, El Toro Rd., near Meadow Ridge Dr. 362 Comment
  RSA398  Medicago sativa J. T. Howell 1927-7-27 498 Orange Near ranch, Rancho Santa Ana 152 Comment
  RSA652177  Medicago sativa R. B. Newcom 1948-4-24 24 Orange 1 miles S.W. of Orange on south side of Tree [illegible] 54 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
  CAS-BOT-BC281594  Melica imperfecta C. L. Hitchcock 1964-3-17 23071 Orange 8 miles E of Yorba Linda, Santa Ana Canyon Comment
  POM1213  Melica imperfecta C. B. Bradshaw s.n. Orange Arch Beach, Laguna Comment
  UCR191361  Melica imperfecta A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34628 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 290 Comment
  POM7085  Melica imperfecta var. flexuosa P. A. Munz, L. T. Street, G. Williams 1919-5-3 2659 Orange Santa Ana River Canyon. Comment
  HSC14999  Melilotus albus S. M. Clapp 1966-4-10 42 Orange Just S of Brea Canyon Rd., 1 mi. N of Brea Union Oil Property 61 Comment
  IRVC24248  Melilotus albus Fred M. Roberts, G. A. Marsh 1985-10-25 2505 Orange Santa Ana River; adjacent to Costa Mesa, 1.3km SSW Adams St. bridge, Southern Coastal 2 Comment
  OBI7998  Melilotus albus Kurt R. Neisess 1976-1-2 s.n. Orange Along Skyline Dr in Fullerton Comment
  UCR100459  Melilotus albus B. G. Pitzer 1996-4-30 2766 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR210375  Melilotus albus T. B. Salvato, Billy Deane 2006-10-16 1933 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 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
  RSA699735  Melilotus albus Keith E. Hoffmaster 1927-2-12 s.n. Orange Santa Ana. Comment
  IRVC20467  Melilotus indicus Fred M. Roberts 1983-5-13 1059 Orange Dana Point Headlands; N of Scenic Dr., 0.5km W Dana Point Harbor; 0.7km SSW Richard Henry Dana School. Southern Coastal 79 Comment
  IRVC2412  Melilotus indicus Anonymous 1965-3-14 s.n. Orange Dana Point. Southern Coastal Comment
  IRVC2414  Melilotus indicus J. B. Anderson 1966-4-12 568 Orange Newport Beach; [Newport] Back Bay. Southern Coastal Comment
  RSA0043353  Melilotus indicus David Barrios 1991-5-1 7 Orange 1500 ft. northwest of Fairmont Ave and Quail Cir., Yorba Linda. 365 Comment
  UC537000  Melilotus indicus Lawrence M. Booth 1932-5-12 1018 Orange Newport Bay Comment
  POM201874  Melilotus indicus L. M. Booth 1932-5-12 1018 Orange Newport Bay. Comment
  POM312088  Melilotus indicus Jane Shelton 1963-5-3 22 Orange El Morro Beach, Laguna, Alt 5ft 2 Comment
  RSA184136  Melilotus indicus I. L. Wiggins 1966-3-18 20530 Orange California State College at Fullerton. Comment
  RSA708448  Melilotus indicus Mark Elvin 2004-5-2 3410 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW of UC Irvine Campus center. 3 Comment
  RSA733975  Mentha spicata Keith E. Hoffmaster 1926-12-18 428 Orange Santa Ana. Comment
  JEPS42777  Mentzelia micrantha John Thomas Howell 1927-7-3 2642 Orange Santa Ana Mts., Claymine Canyon 304 Comment
  IRVC14  Mesembryanthemum crystallinum L. Stilgenbauer 1965-3-20 Orange Corona del Mar, 339 Milford Dr. Newport Beach Comment
  UC7687  Mesembryanthemum crystallinum O. B. Byram 1901-9-10 Orange Westminster 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
  RSA234539  Mesembryanthemum crystallinum James Henrickson 1970-7-24 4982 Orange 2 miles NW of Huntington Beach around small freshwater industrial pond at eastern margin of Bolsa Chica Salt Marsh along Huntington Beach Mesa. 0 Comment
  RSA640309  Mesembryanthemum crystallinum L. C. Wheeler 1931-6-8 s.n. Orange Balboa Comment
  JEPS57261  Mesembryanthemum nodiflorum L. R. Heckard and R. C. Bacigalupi 1968-5-8 1835 Orange at s end of the town of Dana Point Comment
  UCR100444  Mesembryanthemum nodiflorum B. G. Pitzer 1996-4-30 2775 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  RSA18535  Mesembryanthemum nodiflorum C. B. Wolf 1927-7-23 662 Orange Along the coast just north of San Clemente. 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
  RSA543973  Micropus californicus Steve Boyd, Orlando Mistretta 1991-5-9 6203 Orange Crest of range at Oak Flat, SE of Sierra Peak, just West of Riverside County Line. 793 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
  UCR158147  Microseris douglasii subsp. douglasii Adrian Wolf 1998-4-25 160 Orange South Coast, San Joaquin Hills, west Bommer Canyon ridge, 1 km NW of Signal Peak, 3 km east of San Joaquin Reservoir 287 Comment
  CAS-BOT-BC322629  Microseris douglasii subsp. platycarpha Scott D. White 1998-3-16 6210 Orange Site of proposed Research Park, southwest of main campus circle, ca. halfway between Berkeley Ave. and new freeway (Bonita Canyon), USGS Tustin 7 1/2 ' quad, University of California Irvine Campus, Irvine 36 Comment
  RSA597724  Microseris douglasii subsp. platycarpha D. E. Bramlet 1995-4-29 2404 Orange Fairview Park, City of Coast Mesa. The site is located some 366m N of the intersection of Wilson and Canyon Dr. and 152 m W of the Canyon School, on a mesa overlooking the Santa Ana River. 43 Comment
  UCR208155  Microseris douglasii subsp. platycarpha Fred M. Roberts, D. E. Bramlet 2003-3-27 5621 Orange Coastal Plains & Basins; South Coastal Plain region, Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.79km N Sycamore Gate, 0.23km W Cristianitos Rd. 126 Comment
  RSA599650  Microseris douglasii subsp. platycarpha Fred M. Roberts 1995-4-21 4931 Orange Irvine: San Joaquin Hills, Quail Hill area near end of San Canyon Road, 2.5 km ENE French Hill. 52 Comment
  UCR177425  Microseris heterocarpa Scott D. White, Amanda Duchardt 2003-3-27 8850 Orange Peninsular Ranges/Santa Ana Mtns, Canyon bottom and W-facing slopes above Canada Gobernadora 183 Comment
  RSA263649  Microseris lindleyi E. W. Lathrop 1966-4-6 6138 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  UCR98256  Microseris lindleyi Scott D. White 1997-3-28 4846 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  JEPS87331  Mimulus David M. Thompson 1992-5-16 1066 b Orange 2.4 mi n and w Hwy 74 (along USFS Road 3S04 (n side of paved loop allowing access to Main Divide Road)); Santa Ana Mts. 950 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
  RSA649084  Mimulus aurantiacus subsp. australis Karl Price 1988-4-29 20 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
  RSA0056606  Mimulus aurantiacus subsp. australis P. Shirokawa 1998-4-24 5 Orange Cleveland National Forest. Trabuco Ranger District, 2.35 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 991 Comment
  RSA0058060  Mimulus aurantiacus subsp. australis Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49674 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 457 Comment
  UCR96610  Mimulus aurantiacus var. aurantiacus B. G. Pitzer 1996-4-30 2801 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  LA209118  Mimulus aurantiacus var. pubescens Norman C. Cooper; 1944-6-4 1341 Orange San Juan Canyon 304 Comment
  RSA55153  Mimulus aurantiacus var. pubescens David M. Thompson 1992-5-16 1067 Orange 2.4 mi. N and W of Hwy 1 along Hwy 133 ( Laguna Canyon Rd.) 52 Comment
  UCSB48356  Mimulus aurantiacus var. pubescens Roberts, Fred 1982-4-18 Orange Santa Ana Mtns; San Juan Canyon; Hwy 74; 0.6km SW Lower San Juan Picnic Ground; 1.9km WNW Sitton Peak 420 Comment
  RSA0113246  Mimulus aurantiacus var. pubescens Lyman Benson 1946-4-27 12057 Orange Corona del Mar. 15 Comment
  OBI9518  Mimulus aurantiacus var. puniceus H. E. McMinn 1949-6-9 5617 Orange About 3 mi E of San Juan Capistrano on hwy 74 Comment
  UCR192730  Mimulus brevipes A. C. Sanders, Fred M. Roberts 2008-5-6 35230 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
  RSA7634  Mimulus clevelandii Carl B. Wolf 1933-11 20009 Orange Trabuco Canyon, so wall, opposite the Trabuco truck trail. Comment
  JEPS87315  Mimulus clevelandii David M. Thompson 1992-5-16 1065 Orange Santa Ana Mountains, 3.9 mi N and W of Highway 74 along USFS Road 3S04 (the N side of paved loop allowing access to the main Divide Road). Comment
  RSA0036645  Mimulus floribundus Robt. Allen, Richard Newell 2009-7-11 s.n. Orange Peninsular Ranges; Santa Ana Mountains regions: Upper Santiago Canyon, just past community of Modjeska Canyon, Fleming Ranch, East end of Modjeska Canyon Road. 621 Comment
  JEPS10479  Mimulus guttatus Lawrence M. Booth 1932-6-7 1167 Orange Newport Bay Comment
  RSA447957  Mimulus guttatus M. B. Dunkle 1934-6-18 3948 Orange San Juan Canyon. 305 Comment
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Jun 14 2012
  UCR158806  Mimulus pilosus A. C. Sanders, Mark A. Elvin 2005-9-2 31602 Orange Peninsular Range; Santa Ana Mtns., mouth of Lion Canyon near Lower San Juan Picnic Area, San Juan Creek Canyon 427 Comment
  CDA41824  Mimulus puniceus Pope & Hill 1957-4-9 s.n. Orange Irvine Ranch. 0 Comment
  CSUSB1909  Mimulus puniceus Mike Simmons 1975-5-28 Orange Highway 5, 2 miles west of Laguna Canyon Road 60 Comment
  CAS-BOT-BC434667  Mirabilis laevis var. crassifolia P. A. Munz; R. D. Harwood 1920-4-24 3739 Orange Santa Ana Mts., Sierra Canyon 365 Comment
  RSA465232  Mirabilis laevis var. crassifolia N. C. Cooper 1949-5-1 3936 Orange San Juan Canyon. 610 Comment
  UC1287146  Mirabilis laevis var. crassifolia C. L. Hitchcock 1966-3-15 24143 Orange Stearns Lease, 1.5 miles E of Brea Comment
  UCR267183  Mirabilis laevis var. crassifolia Fred M. Roberts 2010-3-12 7178 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
  RSA38698  Modiola caroliniana E. L. Paddock 1943-9-10 s.n. Orange 1.5 miles NE of Brea Comment
  RSA0028031  Mollugo verticillata Fred M. Roberts, Laura Cohen 2012-10-31 7717 Orange San Joaquin Hills: Laguna Lake 1 (Upper Laguna Lake), north end. Laguna Coast Wilderness Park, ca. 5.1 kilometers ENE Signal Hill. 113 Comment
  SFV20018  Monanthochloe littoralis A. Dittmer, S. Dark 2004-10-3 77 Orange Bolsa Chica wetlands. Across the public access bridge (east) of the public parking area off Highway 1. Comment
  UCD86070  Monanthochloe littoralis Peter H. Raven 1958-7-5 13562 Orange north of Surfside. Comment
  UCD86109  Monanthochloe littoralis F. M. Reed 1928-2-10 5713 Orange Arch Beach. 46 Comment
  UCR207556  Monanthochloe littoralis O. F. Clarke 2004-4-5 s.n. Orange South Coast, Newport Back Bay 3 Comment
  IRVC28229  Monardella hypoleuca A. C. Sanders, Mark A. Elvin 2005-9-2 31607 Orange Upper Holy Jim Canyon, a major tributary of Trabuco Cyn, along the trail in switchbacks. Peninsular Ranges, Santa Ana Mtns 820 Comment
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Aug 13 2012
  RSA0005461  Monardella hypoleuca J. T. Howell 1928-7-10 1094 Orange Black Star Canyon, Santa Ana Mts. 305 Comment
  SD220682  Monardella hypoleuca subsp. hypoleuca Lisa Young 2009-6-18 Orange East end of the town of Silverado, on old mine trail heading south between Pine and Halfway Canyons. On top of a ridge. 835 Comment
  CAS-BOT-BC221717  Monardella hypoleuca subsp. intermedia A. C. Sanders; Fred M. Roberts 2008-7-3 35683 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation corridor 415 Comment
  CAS-BOT-BC221718  Monardella hypoleuca subsp. intermedia Carl B. Wolf 1936-6-22 8003 Orange Santa Ana Mts., 3 mi. above F. S. Gate in Santiago Canyon, along truck trail to Modjeska Pk. 762 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
  SD237499  Monardella hypoleuca subsp. intermedia A. C. Sanders, Fred M. Roberts 2008-7-16 35845 Orange Peninsular Range; Santa Ana Mountains: Lomas de Santiago, Dripping Spring off Limestone Canyon, c. 7.5 mi ESE of Tustin (El Toro 7.5'Q) 391 Comment
  UCR193800  Monardella hypoleuca subsp. intermedia A. C. Sanders, Fred M. Roberts 2008-7-3 35681 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 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
  RSA679223  Monardella lanceolata Fred M. Roberts 2003-6-25 5948 Orange Santiago peak, north slopes along ridge east of Main Divide truck trail, 0.6km NNW summit. 1605 Comment
  RSA401585A  Monardella lanceolata var. lanceolata Claire Kibbe 1936-07 s.n. Orange Santa Ana Canyon. 762 Comment
  RSA0010789  Morus Fred M. Roberts, Michelle Balk, Robert Allen, Chris Barnhill 2004-6-19 6060 Orange Santa Ana Mtns.: Holy Jim Cyn.: Holy Jim Trail, 3.3km SE summit of Santiago Peak. 628 Comment
  RSA542545  Muhlenbergia microsperma Fred M. Roberts 1988-2-18 3802 Orange Lomas de Santiago: Ridge west of Irvine Lake, 1.0 km NW Santiago Dam spillway 244 Comment
  UCD86852  Muhlenbergia microsperma Elizabeth Wilson 1940-5-24 s.n. Orange Laguna beach to Santa Ana. Comment
  UCR190991  Muhlenbergia microsperma A. C. Sanders, Fred M. Roberts 2008-4-22 35009 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
  UCSB52863  Muhlenbergia microsperma Marsh, G.; Marsh, K. 1981-5-24 Orange Lower Hot Springs Canyon, Lazy W camp, on K-9 trail; Santa Ana Mts Comment
  UCR247871  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 km WNW Pelican Hill summit. 37 Comment
  RSA0010806  Myoporum laetum Fred M. Roberts 2008-5-16 6977 Orange Dana Point: Dana Point Headlands, CNLM Preserve, along north slopes above Dana Strand Beach, 0.8km WNW Marine Institute, Dana Point Harbor. 45 Comment
  RSA0125893  Myoporum sandwicense Fred M. Roberts 2012-5-9 7551 Orange Lake Forest: near Serrano Creek, utility road, 0.3 km SSW intersection of Commerce Centre and Dimension Drives. 206 Comment
  UC814338  Najas guadalupensis P. A. Munz 1922-9-2 6347 Orange Laguna Lake 45 Comment
  CAS-BOT-BC219359  Nama stenocarpa Le Roy Abrams 1901-6-13 1770 Orange Laguna Comment
  RSA666096  Nama stenocarpa Fred M. Roberts, Michelle Lee 2001-6-4 5460 Orange Rancho Mission Viejo: Chiquita Ridge, 0.3km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. (Canada Gobernadora. 226 Comment
  RSA263717  Nassella lepida E. W. Lathrop 1966-4-18 6179 Orange 4 mi NE of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA3181  Nassella lepida C. B. Wolf 1932-3-8 2682 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  RSA749301  Nassella lepida Fred M. Roberts 1999-4-21 5182 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
  POM147646  Nassella pulchra F. M. Reed 1927-04 5474 Orange Cliff at Beach. 15 Comment
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Nov 4 2017
  POM263720  Nassella pulchra E. W. Lathrop 1966-3-23 6105 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  UCD87647  Nassella pulchra R. M. L. 1942-4-16 11 Orange 8 miles east of Santa Ana. El Toro Ranch. Comment
  RSA697463  Nasturtium officinale Effie Jessup s.n. Orange Irvine Hills. Comment
  CAS-BOT-BC109089  Nemacaulis denudata var. denudata E. K. Balls; P. C. Everett 1955-9-7 21431 Orange On Highway 101, mouth of Santa Ana River. 3 Comment
  POM201760  Nemacaulis denudata var. denudata L. M. Booth 1932-5-27 1132 Orange Newport Beach Comment
  RSA678514  Nemacaulis denudata var. denudata Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary Wallace 2001-4-4 1131 Orange Bolsa Chica Beach State Park and Bolsa Chica Ecological Reserve Boundary, alongside Pacific Coast Highway. 3 Comment
  RSA756067  Nemacaulis denudata var. denudata O. F. Clarke 2004-7-19 s.n. Orange Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach 4 Comment
  UCR248994  Nemacaulis denudata var. denudata Elizabeth A. Kempton 2006-5-5 304 Orange South Coast, Pacific Coast Hwy (Hwy 1), near entrance to Bolsa Chica State Beach, outside of ecological park boundary 0 Comment
  RSA0013585  Nemacladus ramosissimus D. E. Bramlet, Jim Harrison 2008-4-3 4156 Orange South Bee Cyn. Bowerman landfill site, 1.2km south of Bee Cyn access road, & 122n west of the active landfill. 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
  UC1607998  Nemophila menziesii Donald G. Nelson 1935-3-16 164 Orange n Fullerton; n of Fullerton 60 Comment
  UCR98133  Nemophila pedunculata George K. Helmkamp, E. A. Helmkamp 1997-4-24 1661 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
  CAS-BOT-BC478171  Nephrolepis cordifolia R. E. Jr. Riefner 2014-7-27 14 -261 Orange City of Long Beach, N of E 2nd Street and W of Marine Stadium Park, Alamitos Bay, along docks on Bay Shore Ave. between Monroe Ave. and E. Vista Street 6 Comment
  IRVC157  Nephrolepis exaltata var. bostoniensis Randy Acevedo 1965-5-5 HS 533 Orange Newport Beach; East Bluff. Southern Coastal 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
  UC566776  Nicotiana clevelandii Herbert L. Mason 1926-4-25 2929 Orange 5 mi s Laguna (sea cliffs) Comment
  UCR267213  Nicotiana clevelandii Fred M. Roberts, Lee Ann Caranza 2009-4-7 7140 Orange South Coastal Region, DANA POINT HEADLANDS: Dana Point CNLM Preserve, 0.8 km WNW Dana Point Marine Institute at Dana Point Harbor 60 Comment
  CAS-BOT-BC231675  Nicotiana glauca C. L. Hitchcock 1966-3-15 24144 Orange Stearns Lease, 1 1/2 miles e. of Brea Comment
  SEINET7073413  Nicotiana glauca A. G. Vestal 1963-4-24 s.n. Orange La Paz Canyon, Rancho Mission Viejo. Coordinate datum: NAD27. Comment
  UCD126655  Nicotiana glauca C. L. Hitchcock 1966-3-15 24144 Orange Stearns Lease, 1.5 miles east of Brea. Comment
  UCR191471  Nicotiana glauca 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 351 Comment
  IRVC26534  Nolina Mark A. Elvin 2004-5-22 3452 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA751322  Nolina cismontana A. C. Sanders, Fred M. Roberts, Amber O Neal 2008-5-9 35290 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  SD121703  Nolina cismontana James C. Dice, Thomas Oberbauer 1986-5-3 651 Orange Santa Ana Mountains, 0.2 kilometer west of the community of Trabuco Canyon and ca. 1 kilometer east of O'Neill Regional Park Comment
  SD121705  Nolina cismontana James C. Dice, Thomas Oberbauer 1986-5-3 650 Orange Santa Ana Mountains, 0.2 km west of the community of Trabuco Canyon and ca. 1 km east of O'Neill Regional Park. Locally common of east-facing slope. 365 Comment
  UCR208437  Nolina cismontana R. E. Riefner Jr. 2007-6-14 07- 256 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, west fork Fremont Canyon, Donaldson Ranch area 381 Comment
  UCR37795  Nolina cismontana 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
  UCD169807  Nolina parryi R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49684 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 457 Comment
  UCR193761  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 Agustine Staging Area 260 Comment
  RSA531  Oenanthe sarmentosa J. T. Howell 1927-7-14 398 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC171489  Oenothera californica Carl B. Wolf 1931-3-25 1935 Orange Along the Santa Fe R.R., 1 mile west of Atwood 91 Comment
  UCR239649  Oenothera speciosa Fred M. Roberts 2012-5-9 7550 Orange Santa Ana Mountains, Lake Forest, near Serrano Creek utility road, 0.3 m south-southwest of intersection of Commercentre and Dimension Drives 206 Comment
  POM284061  Opuntia X occidentalis Lyman Benson 1955-10-17 15595 Orange Moulton Ranch just west of the summit east of Laguna Beach. 152 Comment
  SEINET10732293  Opuntia X occidentalis Betty Venrick 1961-5-13 Venrick 586 Orange 3 miles North of Laguna Beach, on coast. Comment
  OBI37758  Opuntia X vaseyi D. J. Pinkava & M. G. McLeod, M. G. McLeod 1970-11-8 312 Orange 1/2 mi E of Warner Airport 914 Comment
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Nov 18 2013
  RSA727266  Opuntia dejecta R. E. Riefner 2006-7-23 06 -312 Orange South Coast: Newport Beach (city), north shore of Upper Newport Bay, west c. 0.25 mi. from intersection of Bayview Way and Bayview Place 11 Comment
  HSC3800  Opuntia littoralis J. W. Johnson 1961-3-29 Orange Newport Beach, slope overlooking Upper Newport Bay. Comment
  CAS-BOT-BC56867  Opuntia oricola L. R. Abrams 1917-6-23 6558 Orange Field redacted by CAS, contact the data manager for more information Comment
  SEINET3208448 Image available Opuntia prolifera Marc A. Baker, Bruce D. Parfitt 1987-4-12 7519 Orange Newport Beach, just W of bridge to Balboa Penninsula. Comment
  RSA6667  Opuntia vaseyi B. D. Stark 1933-1-17 4512 Orange 5 miles north of Laguna Beach on road to Irvine. 152 Comment
  JEPS126146  Orobanche californica subsp. jepsonii Bob Allen with Alison Colwell 2005-7-21 05 -101 Orange Whiting Ranch Wilderness Park. Comment
  RSA0027779  Orobanche fasciculata Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49677 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] 457 Comment
  RSA0070944  Orobanche fasciculata Fred M. Roberts, Carol A. Roberts 1988-6-9 4082 Orange Santa Ana Mountains: Modjeska Peak, 0.9 km SW summit. 1542 Comment
  UCR26601  Orobanche parishii Steve Boyd 1982-7-26 s.n. Orange Rancho Mission Viejo, Ashbury Canyon north of Arroyo Trabuco Comment
  CLARK-A1528-4285  Orthocarpus purpurascens John C. Roos 1965-6-16 Orange Dana Point Comment
  POM296926  Orthocarpus purpurascens Lyman D. Benson 1946-4-27 12052 Orange Corona Del Mar; Drainage area: Pacific Ocean. 15 Comment
  RSA15943  Orthocarpus purpurascens var. pallidus Percy C. Everett 1935-4-27 6692 Orange Bryant Ranch. NW corner Hansen Rd. and Bryant Ave. 30 Comment
  IRVC24743  Osmadenia tenella Fred M. Roberts 1986-4-29 2823 Orange Turtle Rock, above corner of Ridgerout Dr. and Turtle Rock Dr., 1.1km SE French Hill, Irvine 141 Comment
  SD255070  Osmorhiza brachypoda R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49790 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  POM353433  Oxalis albicans subsp. californica M. B. Dunkle 1934-2-19 3837 Orange San Juan Canyon, 366 Comment
  RSA12828  Oxalis pes-caprae Carl B. Wolf 1934-12-26 6261 Orange 1/8 mile south of San Juan Capistrano 30 Comment
  SEINET3093692 Image available Oxalis pes-caprae J. Harry Lehr 1972-3-30 625 Orange Santa Ana Street. 30 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
  UCR227627  Oxytheca trilobata Robt. L. Allen 2003-6-22 12281 Orange Santa Ana Mountains, along North Main Divide Road, 6.3 road mi north of Falcon Group Campground, c. 2.43 air mi northwest of Los Pinos Saddle 1334 Comment
  UCR241098  Pallenis maritima R. E. Riefner Jr. 2012-5-25 12- 393 Orange South Coast, City of Dana Point, rocky shore between Mussel Cove and Salt Creek Beach 5 Comment
  RSA594803  Papaver californicum Fred M. Roberts, Sandy Leatherman, B. Leatherman 1994-4-24 4920 Orange Santa Ana Mountains: San Juan Canyon, south side of CA route 74, 1 kilometers NNW San Juan Survey Mark. 268 Comment
  UCD88687  Parapholis incurva Louis C. Wheeler 1947-5-3 6475 Orange Newport Bay. Comment
  CAS-BOT-BC413373  Parietaria hespera var. californica Helen D. Geis 1902-1-1 509 Orange Santa Ana Comment
  UCR241049  Parietaria hespera var. hespera Robert DeRuff 2005-2-4 554 A Orange South Coast, Upper Newport Bay, adjacent to Back Bay Dr. just past Newporter Canyon 3 Comment
  UCR222662  Parietaria judaica R. E. Riefner Jr. 2006-5-21 06- 199 Orange South Coast, city of Huntington Beach, Beach Blvd. at MacDonald Ave. 8 Comment
  UCR44904  Paspalum dilatatum B. G. Pitzer, L. F. LaPre 1986-10-20 319 Orange City of Irvine, Drainage channel near intersection of Irvine Blvd. and Sand Canyon Avenue. 91 Comment
  UCSB40900  Paspalum dilatatum Roos, John 1936-10-13 Orange Costa Mesa near Santa Ana Comment
  UCSB68449  Paspalum dilatatum Anderson, J. 1966-5-16 Orange Bayview Ave. and Zenith Ave. Comment
  RSA798100  Paspalum distichum R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49568 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  RSA724060  Paspalum urvillei R. E. Riefner 2005-11-4 5 -742 Orange City of Lake Forest, Alton Pkwy. at Bertea Rd. 123 Comment
  CAS-BOT-BC414244  Paspalum vaginatum R. E. Riefner, Jr. 2014-1-14 14 -23 Orange City of Dana Point, Salt Creek Beach, Salt Creek Lagoon and eroding channel bank; W of Pacific Coast Highway and W of Monarch Beach Golf Course 1 Comment
  OBI74937  Paspalum vaginatum Unknown 2008-7-29 08 -257 Orange City of Dana Point near Ritz-Carlton Hotel, Salt creek beach area 0 Comment
  RSA766062  Paspalum vaginatum R. E. Riefner Jr. 2008-7-29 08 -256 Orange City of Dana Point, near Ritz-Carlton Hotel, Salt Creek Beach area. 1 Comment
  UC2061632  Paspalum vaginatum R. E. Riefner Jr. 2008-8-31 08 -267 Orange City of of Irvine, tidal portion of San Diego Creek, immediately east of Highway 73 overpass. Comment
  UCR204900  Paspalum vaginatum R. E. Riefner Jr. 2005-7-9 05- 545 Orange South Coast, city of Mission Viejo, Oso Creek, c. 1.4 mi north of Paseo de Colinas on Camino Capistrano 88 Comment
  UC1543029  Pectocarya linearis subsp. ferocula Donald G. Nelson 1935-3-16 167 Orange n Fullerton (across valley from Hillcrest Park) Comment
  UCR217452  Pectocarya linearis subsp. ferocula Mark A. Elvin 2003-1-26 2230 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  RSA663276  Pedicularis densiflora R. E. Riefner 2000-3-18 20 -134 Orange Cleveland National Forest. Ridge-top E of Fremont Canyon and W of Hidden Valley. eastern part of Section 24. 732 Comment
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Mar 17 2021
  SD174884  Pelargonium Mark A. Elvin 2005-5-14 4313 Orange Southern Coastal: UCI Arboretum, growing wild in the Arboretum grounds, not cultivated. 14 Comment
  IRVC28859  Pelargonium Mark A. Elvin 2005-5-14 4314 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA7472  Pellaea mucronata var. mucronata C. B. Wolf 1933-8-24 5396 Orange Summit of Santiago Peak, Santa Ana Mountains 1731 Comment
  RSA0093405  Pennisetum clandestinum D. E. Bramlet 2009-11-20 4416 Orange South Coast: San Diego Creek between Irvine and Newport Back Bay. 4 Comment
  RSA0015000  Pennisetum setaceum Fred M. Roberts, David E. Bramlet 2008-5-13 6957 Orange Upper Weir Cyn., central fork, 3.5 km NE Roberst Peak 369 Comment
  RSA33780  Penstemon centranthifolius N. C. Cooper 1944-6-4 1351 Orange San Juan Canyon, lower camp ground. 457 Comment
  RSA0054891  Penstemon cordifolius Keith E. Hoffmaster 1941-7-14 1251 Orange At Blanding Nursery, Santa Ana. Comment
  RSA790701  Penstemon cordifolius R. H. McArthur 1934-5-19 2 Orange PR8. Trobuca Canyon. Comment
  UCR227629  Penstemon grinnellii Robt. L. Allen 2003-6-22 12273 Orange Santa Ana Mountains, west-facing flank of Santiago Peak, along North Main Divide Road 1555 Comment
  RSA131654  Penstemon grinnellii E. K. Balls 1958-6-27 23288 Orange Yellow Pine Forest. 1/4 mi. S. from Santiago Peak. 1494 Comment
  RSA761802  Penstemon grinnellii Robert Allen 2003-6-22 12271 Orange Northwest-facing flank of Santiago Peak, along North Main Divide Road. 1556 Comment
  RSA759276  Penstemon heterophyllus Robert Allen, Lori Whalen 2008-7-5 s.n. Orange Dry foothills along a SW-facing ridge, slong Santiago Truck Trail, 0.5 air miles E of USPF Forest Gate at Modjeska Grade Road. Comment
  RSA761797  Penstemon heterophyllus Robert Allen 2003-6-22 12310 Orange West-facing flank of Santiago Peak, near the saddle between Santiago and Modjeska Peaks, along North Main Divid Road. 1523 Comment
  RSA539360  Penstemon heterophyllus var. australis Fred M. Roberts, Carol A. Roberts 1988-6-9 4077 Orange Santa Ana Mountains: Main Divide Truck Trail, saddle between Modjeska Peak and Santiago Pk., 0.5 km Ee summit of Modjeska Pk. 1445 Comment
  POM351577  Pentachaeta aurea Anstruther Davidson 1893-05 s.n. Orange Santiago Canyon Comment
  RSA0059338  Pentagramma triangularis L. M. Booth 1932-5-19 1066 Orange Newport Bay Comment
  SFV16195  Peritoma arborea R. K. Stachelek, B. Anderson, F. Schropshire 1995-3-1 39 Orange Newport Beach, Upper Newport Bay on Back Bay Drive about 0.5 miles north of Shellmaker Island. Mesic roadside at base of coastal bluff adjacent to semi-disturbed coastal sage scrub area. Comment
  SEINET10974097  Persea George A. Zentmyer 1990-11-1 Zentmyer 1 -B Orange University of California South Coast Field Station, near Irvine (Tustin7.5'Q) Comment
  CAS-BOT-BC418841  Persicaria hydropiperoides John Thomas Howell 1927-7-5 2653 Orange Near Horseshoe Bend, Santa Ana River bottom, Santa Ana Canon [Canyon] 152 Comment
  UCSB57136  Persicaria hydropiperoides Marsh, G. 1975-7-28 Orange Huntington Beach; East Garden Grove-Wintersburg Flood Control Channel (no.C05); stream bank just N of Warner St. bridge crossing Comment
  RSA0014990  Phacelia brachyloba Fred M. Roberts 2008-5-20 6990 Orange Lomas de Santiago: Santiago Creek wash north of Hanging Man s Tree Road near confluence of Pancho Cyn., 1.6 km NW Bolero Lookout. Irvine Ranch Conservancy. 349 Comment
  UCR239654  Phacelia ciliata Fred M. Roberts 2012-4-27 7543 Orange Lomas de Santiago, Loma Ridge, west of SR 241, tributary to 'Las Flores' Canyon, 1.5 km west-southwest of Irvine Lake Park Campground and 1.1 km east of Orange County Emergency Operations Center, Hill 1311 311 Comment
  RSA798544  Phacelia davidsonii Robert F. Thorne, E. W. Lathrop 1977-5-18 49745 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  POM8712  Phacelia distans P. A. Munz, R. D. Harwood 1920-4-17 3805 Orange Laguna Canyon 76 Comment
  RSA201438  Phacelia distans J. T. Howell 1928-1-15 3277 Orange Near the Ranch House. Rancho Santa Ana. 152 Comment
  RSA752042  Phacelia distans Fred M. Roberts 2008-3-27 6806 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 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
  RSA113263  Phacelia distans E. K. Balls 1955-4-4 20425 Orange N of Dana Poit off Hwy 101. 46 Comment
  RSA759105  Phacelia imbricata Robt. Allen, Genevieve K. Walden, Lisa W. Young 2008-6-26 s.n. Orange Modjeska Peak, W-facing slope within 2 m of the access road up Modjeska Peak. Approximately midway between the peak's south-facing slope and the sharp bend in the extreme N end of the road. 1643 Comment
  RSA2112  Phacelia minor Carl B. Wolf 1931-3-6 1830 Orange Trabuco Canyon Road, 1.25 miles below Trabuco Oaks. 305 Comment
  RSA734633  Phacelia minor A. C. Sanders, T. B. Salvato 2008-5-13 35363 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  UCSB48211  Phacelia minor Roberts, Jr., Fred 1981-5-3 Orange Santa Ana Mtns.; Hot Springs Canyon, 1.3 km. NNE San Juan Guard Station 276 Comment
  RSA788910  Phacelia parryi Fred M. Roberts 2008-6-26 7062 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
  UCR239629  Phacelia parryi Fred M. Roberts 2012-4-24 7515 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
  UCR263590  Phacelia parryi Ed Kentner 2012-4-5 126 Orange Lomas de Santiago, Whiting Ranch Wilderness Park 330 Comment
  UCR16840  Phacelia ramosissima N. J. Moriarty 1973-5-20 730520- 5 Orange Huntington Beach, 0.6 mi. north of Newland Street on the E side of Pacific Coast Hwy (= Hwy 1) Comment
  CAS-BOT-BC144975  Phacelia ramosissima var. austrolitoralis John Thomas Howell 1927-6-3 2417 Orange On sandy ridge, southern Puente Hills, Santa Ana Canyon 152 Comment
  UC537166  Phacelia ramosissima var. austrolitoralis L. M. Booth 1932-5-19 1060 Orange Newport Bay Comment
  RSA0003878  Phacelia ramosissima var. austrolitoralis J. T. Howell 1927-7-17 421 Orange Near Laguna Beach Comment
  SD152824  Phacelia ramosissima var. latifolia Steve Boyd, Tim Ross 1992-5-19 7445 Orange Southern Santa Ana Mts,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. North side of conical knob at confluence with Aliso Canyon. 274 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
  SEINET3119073 Image available Phacelia tanacetifolia P. A. Munz 1934-3-26 13133 Orange Newport Beach 12 Comment
  RSA443837  Phalaris aquatica Gordon Marsh, Karlin G. Marsh 1978-5-20 s.n. Orange Coal Canyon, NE portion of ridge 311 Comment
  RSA610233  Phalaris lemmonii Fred M. Roberts, T. Bomkamp, R. Riefner 1996-4-19 4964 Orange Costa Mesa; Fairview Park, 0.1km W Canyon School 24 Comment
  UCR150384  Phalaris lemmonii D. E. Bramlet 1999-5-16 2764 Orange South Coast, Fairview Park, City of Costa Mesa. Some 336 m N of the intersection of Wilson and Canyon Dr. and 152 m west of the Canyon School, on a mesa overlooking the Santa Ana River 43 Comment
  RSA0127610  Phalaris minor Fred M. Roberts 2016-4-26 8041 Orange Lomas de Santiago: South of Santiago Canyon Road in tributary to Lower Presida Canyon just southwest of Irvine Lake, 2.2 km S Irvine Lake dam spillway and 0.6 km SW Irvine Lake Park. 265 Comment
  UCR195000  Phoenix canariensis A. C. Sanders, Fred M. Roberts 2008-8-7 36007 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  RSA459266  Pholistoma auritum Albert J. Perkins 1914-3-9 s.n. Orange Laguna Beach Comment
  UCSB44692  Pholistoma auritum Hibbard, Doug 1977-3-4 Orange Off the south side of Back Bay Rd., 0.7 miles from its crossing with Jamboree Blvd., New Port Beach 4 Comment
  SEINET10739258  Phoradendron macrophyllum Andrew Townesmith, Karen M. Meyer; Tracy Scott 2007-3-11 Townesmith 675 Orange Cleveland National Forest. Off Long Canyon Road, NW of intersection with Route 74. 752 Comment
  JEPS39026  Phyla lanceolata Lawrence M. Booth 1932-7-1 1238 Orange Anaheim Creek Comment
  UC25108  Phyla lanceolata A. J. McClatchie 1896-6-20 Orange Westminster Comment
  RSA660595  Phyla nodiflora R. E. Riefner 2000-8-17 20 -726 Orange NCCP North Ranch Policy Plan Area. Silverado Creek near Forest Station. 328 Comment
  RSA23579  Physalis acutifolia E. R. Johnson 1939-9-8 9537 Orange Santa Ana Canyon, Rancho Santa Ana., in #2 Valencia Orange Grove. 122 Comment
  JEPS8966  Physalis philadelphica John Thomas Howell 1927-7-28 2869 Orange Santa Ana Canyon, Rancho Santa Ana Santa Ana Canyon; , Rancho Santa Ana 152 Comment
  POM6223  Picris echioides D. L. Crawford 1915-09 505 Orange Huntington Beach. Comment
  RSA655237  Pilularia americana D. E. Bramlet 1998-3-21 2579 Orange Fairview Park, City of Costa Mesa. The site is located some 366m N of the intersection of Wilson and Canyon Dr. and 152 m W of the Canyon School, on a mesa overlooking the Santa Ana River. 24 Comment
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Feb 26 2009
  RSA694924  Pilularia americana H. H. T 1935-3-23 s.n. Orange Costa mesa pools 26 Comment
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May 12 2014
  CAS-BOT-BC73332  Pinus attenuata Carl B. Wolf 1934-12-21 6259 Orange Slope of main ridge, Saddle h.w. of Sugarloaf Pk. (Pleasants Pk.), 1 3/10 mi. so. of summit of Skyline Drive, 1158 Comment
  RSA5314  Pinus attenuata B. D. Stark 1933-1-5 4501 Orange 2 mi. so. of summit of skyline Drive on road along ridge to Santiago Peak. Santa Ana Mts. 1067 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
  SD247530  Pinus attenuata R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49694 Orange Northern Santa Aana Mountains: Sierra Peak. Comment
  UCR174182  Pinus coulteri A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33036 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
  RSA731007  Pinus sabiniana Fred M. Roberts, B. Allen, D. Olsen 2007-1-19 6499 Orange near Black Star Cyn. Rd. Upper Fremont Cyn. near mountain divide, 0.9 km ENE Horseshoe Spring and 0.1 km WSW Beek s Place. (4.1 km NW Pleasants Pk). West-facing slope on sandy, rocky soils in chaparral. 840 Comment
  RSA550612  Piperia cooperi Fred M. Roberts, Carol A. Roberts 1989-4-20 4308 Orange Santa Ana Mountains: upper Lion Canyon along San Juan Trail just S of Blue Jay Campground, 2.5kilometers SE Los Pinos Peak. 1000 Comment
  RSA759144  Piperia elongata Robt. Allen, Reginald Durant 2008-7-19 s.n. Orange Silverado Canyon, Maple Springs Truck Trail, circa 2.3 air miles E of USFS gate. Near small bridge over creek at transistion from asphalt to unpaved road. 904 Comment
  RSA725540  Piptatherum miliaceum Fred M. Roberts, Robert L. Allen 2007-9-28 6606 Orange Santa Ana Mtns.: Silverado Cyn., along Silverado Cyn. Rd. at eastern edge of town of Silverado. 347 Comment
  RSA734904  Piptatherum miliaceum A. C. Sanders 2008-5-28 35438 Orange Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  RSA450840  Piptatherum miliaceum J. Anderson 1966-6-24 680 Orange San Joaquin Hills; Bonita Canyon Reservoir in vicinity of Culver Rd. Comment
  SEINET5642640  Pistacia atlantica Shelby J. Wood 2013-3-9 10 Orange Huntington Beach, Central Park.; 0 Comment
  UCR132567  Pisum sativum Robert DeRuff 1985-3-6 83 Orange Southern Coast, Newport Back Bay, below East Bluff 3 Comment
  SBBG15548  Plagiobothrys D. E. Breedlove 1962-3-9 1797 Orange St Hwy 74, 4.4 mi E of San Juan Capistrano 112 Comment
  RSA715258  Plagiobothrys acanthocarpus R. E. Riefner 2006-4-12 6 -116 Orange Irvine, north foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Canyon Rd. 46 Comment
  UCR222387  Plagiobothrys collinus Mark A. Elvin 2003-1-26 2237 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  JEPS68105  Plagiobothrys nothofulvus Alice King 1908-1 Orange Santa Ana Comment
  UCSB14544  Plagiobothrys nothofulvus Breedlove, Dennis 1962-3-9 Orange 4.4 miles east of San Juan Capistrano on State 74 112 Comment
  RSA580936  Planodes virginica D. Bramlet 1995-4-29 2405 Orange Fairview Park, City of Costa Mesa, the site is located some 366m N of the intersection of Wilson and Canyon Dr. and 152m W of the canyon School, on a mesa overlooking the Santa Ana River. 43 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
  RSA590720  Plantago elongata subsp. pentasperma R. E. Riefner 1994-4-22 94 -337 Orange S 1.5 miles from Moulton Meadows Park, Nyes' Place Ave, Laguna Beach. Comment
  RSA401987B  Plantago erecta Anstruther Davidson 1910-4-1 s.n. Orange Corona Del Mar. Comment
  RSA734805  Plantago erecta A. C. Sanders, Fred M. Roberts 2008-5-6 35253 Orange 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
  RSA749486  Plantago erecta Fred M. Roberts, Linda Farley 2008-3-28 6815 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
  UCR192214  Plantago erecta A. C. Sanders, Fred M. Roberts 2008-5-6 35253 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
  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
  RSA730990  Plantago lanceolata Fred M. Roberts 2006-11-15 6464 Orange Santa Ana Cyn., 1.0 km ENE Imperial Hwy bridge, between La Palma Ave. and Santa Ana River near Big Springs St. 89 Comment
  RSA749680  Plantago major A. C. Sanders, Fred M. Roberts 2008-7-16 35839 Orange Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin. 391 Comment
  UC1618062  Plantago major Donald G. Nelson 1935-7-15 306 Orange Costa Mesa Comment
  UC536911  Plantago major Lawrence M. Booth 1932-6-28 1219 Orange Bolsas Marsh Comment
  RSA725533  Platanus X acerifolia Fred M. Roberts 2007-9-11 6567 Orange Aliso Viejo: tributary to Aliso Creek on west side of Moulton Pkwy., 0.2 km N Aliso Viejo Pkwy., adj. to Kinder Care Learning Center. 83 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
  RSA401707B  Platanus racemosa F. R. Fosberg 1931-6-21 748 Orange Silverado Canyon. Santa Anita Mts. Comment
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Jun 27 2014
  RSA703087  Platanus racemosa Fred M. Roberts, Art Davenport 2003-9-11 6007 Orange Rancho Mission Viejo: Donna O'Neil Land Conservancy, tributary west of Cristianitos Cyn., 1.52 km NNW Sycamore Gate and 250 m W of Cristianitos Road. 152 Comment
  RSA753025  Platanus racemosa A. C. Sanders, Fred M. Roberts 2008-6-17 35471 Orange Peninsular Range; Santa Ana Mtns: Lomas de Santiago, Augustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  RSA0056334  Platanus racemosa Jim Shevock 1970-4-25 154 Orange Highway 74. 309 Comment
  CAS-BOT-BC229039  Plecostachys serpyllifolia R. E. Riefner, Jr. 2011-7-7 11 -88 Orange City of Dana Point, S of Mussel Cove, N of Salt Creek Beach Park 8 Comment
  CAS-BOT-BC334497  Plecostachys serpyllifolia R. E. Riefner, Jr. 2008-7-9 08 -220 Orange City of Laguna Beach, bluff area W of West St. and Pacific Coast Highway 10 Comment
  CAS-BOT-BC354033  Plecostachys serpyllifolia R. E. Riefner, Jr. 2013-12-12 13 -377 Orange City of Dana Point, beach near Salt Creek, vicinity of Ritz Carlton Resort 2 Comment
  SD218284  Plecostachys serpyllifolia R. E. Riefner Jr. 2004-12-30 04 681 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Highway. Comment
  UCR163915  Plecostachys serpyllifolia O. F. Clarke, Roger E. Reinke 2004-11-14 s.n. Orange South Coast, Newport Back Bay 3 Comment
  UCR222656  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08- 312 Orange South Coast, city of Laguna Beach, ocean bluff vicinity of West St. and Pacific Coast Highway 6 Comment
  RSA801997  Plectritis ciliosa Keith E. Hoffmaster 1935-5-5 971 Orange San Juan Canyon., Santa Ana Mts. Comment
  RSA542591  Pluchea odorata Fred M. Roberts, Doug Willick 1988-9-16 4138 Orange Peralata Hills: Oak Canyon Nature Center, Upper Walnut Canyon, 1.0 kilmeter N Robbers Peak. 180 Comment
  RSA639704  Pluchea odorata Scott D. White 1998-12-10 720 Orange Brea: Tonner Canyon and adjacent slope, just east of 57 Freeway crossing. 137 Comment
  RSA933  Pluchea odorata J. T. Howell 1927-10-29 780 Orange Bryant Ranch near Long Beach. 15 Comment
  CAS-BOT-BC326616  Pluchea sericea John Thomas Howell 1927-7-24 2823 Orange Santa Ana River bottom, Santa Ana Canyon 152 Comment
  CAS-BOT-BC326617  Pluchea sericea John Thomas Howell 1927-7-21 2815 Orange Santa Ana River bottom, Santa Ana Canyon 152 Comment
  RSA542452  Plumbago auriculata Fred M. Roberts 1987-10-14 3751 Orange Laguna Beach: Lower Blue Bird Canyon at end of Catalina Street. 21 Comment
  CAS-BOT-BC255535  Poa annua Ira L. Wiggins 1966-3-1 20485 Orange At corner of South Campus Drive and State College Blvd, Fullerton Comment
  IRVC1624  Poa annua E. McRae 1965-3-30 s.n. Orange Corna del Mar High School. Newport Beach Comment
  RSA184156  Poa annua I. L. Wiggins 1966-2-12 20441 Orange Orange grove on W side of State College Blvd. opposite Electra Way, Fullerton. Comment
  RSA731925  Poa annua Fred M. Roberts, Sandy Leatherman 2007-11-27 6685 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. ca. 0.3 km S Fairmont Blvd. 118 Comment
  RSA91683  Poa howellii F. W. Peirson 1923-5-6 3491 Orange Trail to Santiago Peak from Holy Jim Canyon. 991 Comment
  IRVC13913  Poa secunda R. Meinzer 1971-5-24 108 Orange Santa Ana Mountains: Summit of Santiago Peak, upper elevation. Peninsular Ranges Comment
  IRVC24561  Poa secunda Fred M. Roberts 1986-4-11 2782 Orange San Juan Canyon, Hwy 74, 1.2km SSW Lower San Juan Picnic Ground, Santa Ana Mountains 378 Comment
  RSA680732  Poa secunda Scott D. White 2003-3-21 8823 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  RSA644975  Poa secunda subsp. secunda R. E. Riefner 2000-4-15 20 -379 Orange NCCP North Ranch Policy Plan Area. Main Divide Raod; S. of Gypsum Canyon and S of Windy Ridge. 518 Comment
  RSA562735  Polycarpon tetraphyllum Steve Boyd, Timothy S. Ross 1992-5-19 7451 Orange Southern Santa Ana Mountains San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail crossing. 320 Comment
  UCSB48054  Polycarpon tetraphyllum Fritzke, S.; Roberts, Fred 1982-4-3 Orange Dana Point Headlands: north of Dana Strand Road; 0.5 km. W Dana Point Harbor; 0.8 km. SSW Richard Henry Dana School 80 Comment
  RSA450863  Polygala cornuta var. fishiae Gordon Marsh, K. G. Marsh 1977-11-21 s.n. Orange Along N side of Ortega Hwy, 0.6 miles W of Lower San Juan Picnic ground. Comment
  RSA562806  Polygala cornuta var. fishiae Steve Boyd, Tim S. Ross 1992-5-20 7478 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
  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
  UCR237811  Polygala cornuta var. fishiae Dick Newell, Judy Booth 2012-7-8 279 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, on Maple Springs Road 2.25 mi. NE of Maple Springs gate 915 Comment
  UCSB41859  Polygonum aviculare Matkin, Craig 1971-3-19 Orange At the corner of Chapman and Bitterbush in Orange. Comment
  RSA666101  Polygonum aviculare subsp. aviculare Fred M. Roberts, Michelle Lee 2001-6-4 5485 Orange Rancho Mission Viejo: Chiquita Ridge, 0.3km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. (Canada Gobernadora. 226 Comment
  UC729950  Polygonum aviculare subsp. aviculare Carl B. Wolf 1932-6-20 3755 Orange around administration building; Santa Ana Canyon, Rancho Santa Ana 198 Comment
  RSA542466  Polygonum aviculare subsp. aviculare Fred M. Roberts 1987-3-31 3299 Orange Lomas de Santiago: Lomas Ridge, upper Serrano Canyon, east fork, reservoir, 2.7km SE Bolero Lookout. 350 Comment
  RSA5604  Polygonum aviculare subsp. aviculare Carl B. Wolf 1932-6-20 3755 Orange Common around the administration Blds, Rancho Santa Ana Botanic Garden. 198 Comment
  POM2373  Polygonum coccineum D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon. Comment
  RSA756069  Polygonum hydropiperoides T. B. Salvato, Billy Deane 2006-10-16 1927 Orange Irvine, San Diego Creek flood control channel, between Michelson Driveand the 405 Fwy. 9 Comment
  UCR150564  Polygonum hydropiperoides Scott D. White, Matt Carlton 2003-11-20 9868 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in 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
  IRVC3043  Polypodium californicum C. Thompson 1965-4-15 HS0570 Orange Trabuco Canyon. Santa Ana Mountains Comment
  IRVC3046  Polypodium californicum A. S. Boughey 1965-3-5 51 Orange Trabuco Canyon. Santa Ana Mountains Comment
  UCR190968  Polypodium californicum A. C. Sanders, Fred M. Roberts 2008-4-22 35054 Orange Peninsular Range; Santa Ana Mtns., 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 miles WSW of Silverado 493 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
  UCSB62524  Polypodium californicum Kiefer, Lawrence 1963-11-17 Orange Laguna Beach, Aliso Canyon, ca. 100 yards up canyon from Aliso Beach parking area, Hwy 101. 45 Comment
  UCSB62521  Polypodium californicum Kiefer, Lawrence 1963-12-8 Orange Santa Ana Mountains; along road in main canyon above Silverado 457 Comment
  RSA696613  Polypogon interruptus Rankin s.n. Orange Irvine Park Comment
  CAS-BOT-BC237265  Polypogon monspeliensis Peter H. Raven 1957-9-28 11375 Orange N limits of Surfside Comment
  CAS-BOT-BC237266  Polypogon monspeliensis John Thomas Howell 1927-6-21 2570 Orange On N side of Santa Ana Canon [Canyon] 152 Comment
  CAS-BOT-BC237267  Polypogon monspeliensis John Thomas Howell 1927-6-30 2621 Orange 7 miles E of Long Beach 15 Comment
  IRVC15371  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
  IRVC21785  Polypogon monspeliensis Fred M. Roberts 1985-2-25 1456 Orange Irvine: Irvine Ranch; east of MacArthur Blvd., 1.2km W UCI campus; 1.7km SE Bay View School. Southern Coastal 24 Comment
  IRVC22900  Polypogon monspeliensis Fred M. Roberts 1985-6-12 1903 Orange Laguna Niguel: Alicia Pkwy, 2.1km by road SW La Paz Rd., 1.0km W Sulphur Creek Reservoir. Southern Coastal 67 Comment
  IRVC27750  Polypogon monspeliensis Mark A. Elvin 2004-5-2 3416 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 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
  UC729866  Polypogon monspeliensis Carl B. Wolf 1932-7-2 3819 Orange 1/8 mi below La Vida Springs; Carbon Canyon, below La Vida Springs 213 Comment
  UCR96877  Polypogon monspeliensis Scott D. White 1993-4-28 1280 Orange Pacific slope, Tustin Marine Corps Air Station, NW of Peters Canyon Channel, between Moffett Dr. & Warner Comment
  RSA697034  Polypogon monspeliensis Rankin s.n. Orange Costa Mesa Comment
  RSA725795  Populus trichocarpa R. E. Riefner 2006-9-16 06 -434 Orange Yorba Linda, north of Chapman Ave. c. 1 mile along floodplain of Santa Ana River. 98 Comment
  CDA19003  Porophyllum ruderale R. Guerrero 2000-10-17 PDR 1223098 Orange next to Seal Beach Naval Weapons Station, Seal Beach. 0 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
  UCSB48228  Portulaca oleracea Roberts, Fred 1981-7-7 Orange Rancho Mission Viejo: Calif. Rte. 74, 5.2km ENE San Juan Capistrano by road 100 Comment
  RSA1302  Potamogeton crispus J. T. Howell 1928-9-6 1203 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  POM6395  Potamogeton nodosus L. T. Street, Williams 1919-5-4 2689 Orange Laguna Lakes. [now Big Laguna Lake, San Diego Co.] Comment
  CDA25878  Potentilla reptans Mark A. Elvin, L. D. Lyons 2007-6-16 s.n. Orange Southern Coastal; Irvine; west corner of intersection of Jamboree Boulevard and Birch Street in lawn of restaurant. Comment
  RSA39350  Prosopis velutina E. L. Paddock 1943-6-8 12731 Orange Santa Fe Railway, south side of tracks 1/4 mile east of Yorba Cemetery with other plants at scattered intervals between atwood and Rancho Santa Ana. Comment
  RSA50431  Prunella vulgaris var. lanceolata G. R. Campbell 1949-6-28 13991 Orange grown in Botanic Garden. Comment
  RSA443844  Prunus ilicifolia Gordon Marsh, Karlin G. Marsh 1977-5-2 s.n. Orange Pine Canyon, between Blue Light Mine and second mine, near swithback. Comment
  RSA699853  Prunus ilicifolia J. Vlahos 1934-4-22 s.n. Orange Harding Canyon Comment
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Jun 10 2012
  LA208147  Prunus ilicifolia subsp. lyonii Donald Lee Johnson; 1965-1 208147 Orange San Clemente Island, Reservoir Canyon Comment
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Jan 29 2015
  JEPS29201  Pseudognaphalium biolettii Rimo Bacigalupi and P. C. Hutchison 1962-3-16 8235 Orange 2 mi n Doheny Beach State Park; U.S. Highway 101 Comment
  RSA696918  Pseudognaphalium biolettii Snow 1929-3-11 36 Orange W. of Orange Co. Park Comment
  UCR106310  Pseudognaphalium biolettii B. G. Pitzer, M. Georgiady 1997-4-5 3096 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
  UCR217456  Pseudognaphalium biolettii Mark A. Elvin 2003-1-26 2227 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  CAS-BOT-BC356662  Pseudognaphalium californicum A. M. White 1974-6-2 1417 Orange Ca. 20 mi. E. of Santa Ana, CA N. of Silverado Canyon Comment
  UCR281584  Pseudognaphalium canescens subsp. microcephalum Mitch Provance 2017-6-9 617- 97 Orange Coyote Hills, North Fullerton, East side of Gilbert St., 0.5 miles ENE of intersection with Castlewood Dr. 124 Comment
  SBBG128698  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2011-10-19 11 -147 Orange City of San Juan Capistrano, San Juan Crk, ca. 0.2 mi W of intersection of Paseo Tirador and Calle Arroyo St 31 Comment
  UCR232932  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2011-10-19 11- 147 Orange South Coast, city of San Juan Capistrano, San Juan Creek, c. 0.2 mi west of intersection of Paseo Tirador and Calle Arroyo Street 31 Comment
  RSA741722  Pseudognaphalium leucocephalum R. E. Riefner 2008-8-5 08 -259 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, lower Fremont Canyon, main drainage. 223 Comment
  CAS-BOT-BC356984  Pseudognaphalium luteoalbum Scott D. White; Brian Leatherman 1997-6-12 5313 Orange Santa Ana Mtn. foothills. East of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi E of I-15 / Hwy 74 jtn. 75 Comment
  RSA0089199  Pseudognaphalium luteoalbum Fred M. Roberts 2014-4-21 7856 Orange South Coast: San Joaquin Hills: Upper Laguna Lake 1 (upper Laguna Lake), north basin. 113 Comment
  UCR217466  Pseudognaphalium luteoalbum Mark A. Elvin 2003-2-23 2312 Orange South Coast, Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  JEPS20432  Pseudognaphalium ramosissimum L. M. Booth 1932-7-27 1321 Orange Corona del Mar Comment
  CAS-BOT-BC357569  Pseudognaphalium stramineum Mark A. Elvin; P. A. Bowler 2006-5-13 4861 Orange Southern Coastal: Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center 3 Comment
  SD245373  Psoralea macrostachya Robert F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49564 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Along creek. Comment
  POM18129  Pteridium aquilinum var. pubescens P. A. Munz 1923-9-7 7735 Orange Santa Ana Mountains: on trail from Trabuco Canyon to Santiago Peak 1219 Comment
  RSA198  Pterostegia drymarioides J. T. Howell 1927-6-24 198 Orange Aliso Canyon, Rancho Santa Ana. 274 Comment
  RSA392941  Pterostegia drymarioides Albert J. Perkins 1913-4-27 s.n. Orange Trabuco Canon. Comment
  RSA698490  Pterostegia drymarioides R. H. McArthur 1934-4-28 s.n. Orange Ladd Canyon Comment
  UC2029950  Pulicaria paludosa Steve Boyd, R. E. Riefner 2000-9-13 10307 Orange SANTA ANA MOUNTAINS: Fremont Canyon, about 1.5 air miles west of Oat [a.k.a. Oak] Flat and 1.5 air miles southeast of Claymont clay mine. Comment
  UCR101362  Pulicaria paludosa A. C. Sanders, P. J. MacKay, Tim Thomas, O. F. Clarke 1998-10-17 22266 Orange Coastal flats, Bolsa Chica, near Bolsa Bay, south of Warner Ave., east of the Pacific Coast Highway .3 Comment
  UCR138415  Pulicaria paludosa Scott D. White, P. Bowler 1997-11-20 6021 Orange University of Calif., Irvine campus: east of main campus 61 Comment
  UCD47707  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
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Oct 11 2017
  POM256729  Quercus X grandidentata W. Pequegnat 1940-6-18 s.n. Orange About 1 mile NW Sierra Peak. Santa Ana Mts. 762 Comment
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Aug 2 2020
  CAS-BOT-BC61812  Quercus agrifolia C. B. Wolf 1931-3-6 1832 Orange 1.5 miles below Trabuco Oaks along Trabuco Canyon road, west slope Santa Ana Mts. 304 Comment
  RSA751190  Quercus agrifolia var. agrifolia A. C. Sanders 2008-7-3 35684 Orange Upper Weir Canyon, along Windy Ridge Road at huge sandstone boulder (visible on Google Earth), 1.3 mi. SE of Walnut Canyon Reservoir 314 Comment
  UCSC009093  Quercus agrifolia var. agrifolia Al Keuter 2015-3-25 10- 17 -3 Orange SR 133 near Laguna Beach 46 Comment
  IRVC16135  Quercus berberidifolia R. Meinzer, T. Mulroy 1971-4-25 s.n. Orange Santa Ana Mountains: Upper Trabuco Canyon. Peninsular Ranges Comment
  IRVC16619  Quercus berberidifolia Gordon A. Marsh, Karlin G. Marsh 1977-9-1 s.n. Orange Mission Viejo: Jeronimo Springs. Southern Coastal Comment
  IRVC24549  Quercus berberidifolia Fred M. Roberts, K. Kahn 1988-5-26 4012 Orange Rancho Mission Viejo: Hill above and N of confluence of Gabino and Christianitos canyons. Southern Coastal 157 Comment
  IRVC24551  Quercus berberidifolia Fred M. Roberts 1983-10-9 1141 Orange Laguna Beach: Temple Hill S of Upper Rancho Laguna Canyon near Del Mar Street. Southern Coastal 200 Comment
  RSA0042530  Quercus berberidifolia Fred M. Roberts 2013-5-30 7779 Orange Lomas de Santiago: Santiago Creek wash, at Santiago Canyon Road bridge (south side), 0.3km W jct. Silverado and Santiago Canyon Roads. 299 Comment
  RSA644957  Quercus berberidifolia R. E. Riefner Jr. 2000-1 20 - Orange NCCP North Ranch Policy Plan Area. Main Divide Road; top of Gypsum Canyon Comment
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Nov 6 2011
  UCR208107  Quercus berberidifolia D. E. Bramlet 2000-4-13 2980 Orange Penninsular Ranges: Santa Ana Mountains, upper east Blind Canyon; 30 m south of the Blind Canyon access road and beneath SCE transmission lines; 854 m northwest of the Fremont Canon ridge road Comment
  UCR273490  Quercus berberidifolia A. C. Sanders, Glen Morrison 2016-8-4 42609 Orange Peninsular Range; Santa Ana Mountains, dirt road off North Main Divide Road (Forest Rte 3S04), north of Los Pinos Spring, 3.87 km NW (286 deg. ) of El Cariso Fire Station 1101 Comment
  IRVC29765  Quercus chrysolepis Barry S. Nerhus, Mark A. Elvin 2006-11-4 6 Orange Huntington Beach, Bolsa Chica Wetlands, SW portion of Reserve beside Pacific Coast Highway. Southern Coastal 0 Comment
  UC1135416  Quercus chrysolepis A. Lewis May 1934 416 Orange Trabuco Canyon Cleveland National Forest, Elsinore Quad. 1371 Comment
  IRVC24554  Quercus dumosa Fred M. Roberts 1987-8-6 3580 Orange San Joaquin Hills: Pelican Hill; E slope above Los Trancos Canyon; 0.4km ESE Pelican Hill survey mark. Southern Coastal 200 Comment
  UCD170637  Quercus dumosa D. O. Burge 2017-11-17 2326 Orange Laguna Niguel. 140 Comment
  UCR177695  Quercus engelmannii Fred M. Roberts 2003-5-1 5685 Orange Coastal Plains & Basins; South Coastal Plain region, Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.56 km SSW Gato Gate and 0.21 km west of Cristianitos Rd. 96 Comment
  IRVC19904  Quercus lobata Gordon A. Marsh, Karlin G. Marsh 1983-7-15 s.n. Orange San Joaquin Hills, Upper Shady Canyon. Southern Coastal 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
  UCR240165  Quercus suber R. E. Riefner Jr. 2012-11-18 12- 555 Orange South Coast, city of Irvine, San Joaquin Wildlife Sanctuary, South Loop Trail, north of San Diego Creek, west of Campus Drive 8 Comment
  IRVC25113  Quercus wislizeni var. frutescens Fred M. Roberts, Gordon A. Marsh 1986-8-27 3093 Orange Santiago Peak; 0.2km SSW summit Santa Ana Mountains 1695 Comment
  RSA598966  Rafinesquia californica Scott D. White 1997-3-28 4838 Orange Santa Ana Mountains: above Modjeska Canyon, proposed water tank site. 427 Comment
  UCR209061  Rafinesquia californica A. C. Sanders, Fred M. Roberts 2008-4-22 35049 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slopes of south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado 488 Comment
  IRVC14751  Rafinesquia californica A. S. Boughey 1968-4-16 242 Orange Santiago Canyon/Lower Modjeska Cyn, Fleming Property. Santa Ana Mountains Comment
  POM293  Ranunculus californicus D. L. Crawford s.n. Orange Near Laguna Beach Comment
  POM296378B  Ranunculus californicus Lyman Benson 1947-4-27 12338 Orange Carbon Canyon. Chino-Puente Hills; Pacific Slope Drainage Area. 244 Comment
  IRVC29093  Ranunculus californicus var. californicus Fred M. Roberts 1989-3-17 4208 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  POM6265  Ranunculus hebecarpus P. A. Munz, L. T. Street, G. Williams 1919-5-3 2630 Orange Santa Ana River Canyon. Comment
  IRVC22186  Raphanus raphanistrum Fred M. Roberts 1985-4-11 1645 Orange Dana Point Headlands; Weyerhaeuser Horticultural Research Station property. Southern Coastal 61 Comment
  IRVC1150  Raphanus sativus R. Nesheim 1965-4-10 Orange Bayside Dr. near Balboa Island. Newport Beach Comment
  IRVC1157  Raphanus sativus D. Pfirrmann 1965-4-28 Orange Del Mar and Fair[way] Dr. Costa Mesa Comment
  CDA3881  Reseda alba Johnson 1939-4-1 Orange Los Angeles - Garden Grove. 0 Comment
  RSA685139  Rhamnus alaternus Roger Reinke 2003-2-18 s.n. Orange South Coast: Newport Back bay, Big Canyon. 30 Comment
  IRVC29872  Rhamnus alaternus Mark A. Elvin, D. Kelch 2006-12-9 5300 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
  RSA698606  Rhamnus californica Unspecified s.n. Orange Arch Beach. Comment
  UCR26626  Rhamnus californica E. W. Lathrop 1966-5-1 6260 Orange Santa Ana Mtns., 5 mi east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest 400 Comment
  CAS-BOT-BC56038  Rhamnus ilicifolia C. B. Wolf 1931-3-6 1841 Orange 1/2 mile above Trabuco Oaks, Trabuco Canyon, west slope Santa Ana Mts. 457 Comment
  CAS-BOT-BC56040  Rhamnus ilicifolia Ira L. Wiggins 1966-2-25 20473 Orange Firestone Boy Scout Reservation in hills E. of Brea Comment
  RSA790661  Rhamnus ilicifolia Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49703 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  SBBG27367  Rhamnus ilicifolia P. C. Everett 1935-6-17 Orange Coldwater Cyn, 0.5 mi above Glen Ivy Resort 457 Comment
  POM243761  Rhamnus tomentella subsp. cuspidata Percy C. Everett 1935-6-18 7217 Orange Santa Ana Mts: Summit of Santiago Peak. 1732 Comment
  POM257050  Rhus integrifolia W. Pequegnat 1940-5-26 s.n. Orange Black Star Canyon, Santa Ana Mts. 609 Comment
  SD39754  Rhus integrifolia Edith A. Purer 1932-8-31 4875 Orange Along Route 101 Comment
  UCR106277  Rhus integrifolia B. G. Pitzer, M. Georgiady 1997-4-5 3092 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
  UCR267191  Rhus integrifolia Fred M. Roberts 2010-3-12 7184 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
  UCR44902  Rhus laurina B. G. Pitzer, L. F. LaPre 1986-10-20 0321 Orange Trabuco Road at intersection with Sand Canyon Avenue, NW of El Toro Marine Air Station 79 Comment
  CAS-BOT-BC167934  Rhus ovata John Thomas Howell 1927-7-26 2843 Orange Claymine [Canon] Canyon, n. Santa Ana Mts. 243 Comment
  HSC3149  Rhus ovata S. M. Clapp 1966-4-10 30 Orange 4 mi. into Black Star Canyon 183 Comment
  SD253897  Rhus ovata Jim Riley 2013-12-10 132 Orange San Clemente area; 0.29 miles E intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 74 Comment
  RSA5405  Rhus trilobata var. pilosissima B. D. Stark 1932-12-15 4448 Orange Rancho Santa Ana 144 Comment
  RSA542519  Rhus trilobata var. quinata Fred M. Roberts, G. A. Marsh 1986-8-27 3108 Orange Santa Ana Mountains: Santiago Peak, Main Divide Truck Trail, 0.1km WNW Summit. 1620 Comment
  RSA0022442  Ribes amarum Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49777 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  CAS-BOT-BC93108  Ribes californicum var. hesperium Ira L. Wiggins 1966-2-4 20409 Orange Trabuco Canyon, about 2 miles above entrance. Comment
  UC1127382  Ribes californicum var. hesperium A. Lewis May 1934 422 Orange Trabuco Canyon Cleveland National Forest, Elsinore Quadrangle Comment
  CAS-BOT-BC173125  Ribes indecorum B. D. Stark 1930-2-21 1475 Orange Black Star Creek 457 Comment
  CAS-BOT-BC173126  Ribes indecorum Robert J. Weatherby 1950-2-25 1026 Orange Harding Canyon, Santa Ana Mts. 822 Comment
  CAS-BOT-BC173127  Ribes indecorum C. B. Wolf 1931-3-6 1833 Orange 1 1/2 miles below Trabuco Oaks along Trabuco Canyon road, west slope Santa Ana Mts. 304 Comment
  CAS-BOT-BC173128  Ribes indecorum C. B. Wolf 1931-3-6 1861 Orange 1 mile north of base of Modjeska Grade, west slope of the Santa Ana Mts. 304 Comment
  CAS-BOT-BC168943  Ribes malvaceum James R. Shevock 1975-4-6 4138 Orange Along Black Star Canyon Road above Hidden Ranch, Santa Ana Mountains 670 Comment
  RSA1337  Ribes malvaceum var. viridifolium E. R. Johnson 1929-3-12 1251 Orange Canyon West of Roundtop Rancho Santa Ana. 457 Comment
  RSA441492  Ribes malvaceum var. viridifolium Lester H. Cushman 1932-3-5 15733 Orange Trabuco Canyon. Comment
  RSA84500  Ribes malvaceum var. viridifolium F. W. Peirson 1925-4-11 5733 Orange slope above mill, in Silverado Canyon, Santa Ana Mountains. 915 Comment
  RSA0018259  Ribes roezlii Carl B. Wolf 1933-8-24 5395 Orange Summit of Santiago Peak, Santa Ana Mountains. 1707 Comment
  CLARK-A1528-4151  Ribes speciosum John C. Roos 1962-5-6 Orange Santa Ana Mountains Comment
  POM6387  Ribes speciosum P. A. Munz, L. T. Street 1919-5-3 2664 Orange Santa Ana River Canyon. Comment
  RSA2066  Ribes speciosum Carl B. Wolf 1931-3-6 1863 Orange 1 mile north of mouth of Harding canyon, west slope of Santa Ana Mts. 305 Comment
  RSA351  Ribes speciosum J. T. Howell 1928-3-18 888 Orange Aliso Canon [Canyon], Rancho Santa Ana. 229 Comment
  RSA40800  Ribes speciosum G. R. Campbell 1949-3-4 12816 Orange Claymine Canyon, Santa Ana Mts. Comment
  RSA602110  Ribes speciosum Scott D. White 1997-5-6 5038 Orange Santa Ana Mountians, Santiago Canyon Area: Unnamed tributary to Santiago Creek flowing from the SW, directly W of Pancho Canyon . Lomas de Santiago S179. 366 Comment
  RSA658211  Ribes speciosum T. A. Daubert 1991-5-19 661 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  UCD102509  Ribes speciosum P. B. Kennedy 1925-1-12 s.n. Orange Irvine Range. Comment
  UCR190971  Ribes speciosum A. C. Sanders, Fred M. Roberts 2008-4-22 35038 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  UCR241064  Ribes speciosum Dick Newell, Don Millar 2013-2-26 316 Orange South Coast, Willow Canyon Trail, Laguna Wilderness, 0.4 mi. NW of 133 Hwy and El Toro Rd. 163 Comment
  POM9825  Ribes speciosum P. A. Munz, R. D. Harwood 1920-4-24 3741 Orange Sierra [Freemont] Canyon, Santa Ana Mts. 366 Comment
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Sep 17 2011
  CAS-BOT-BC207157  Ricinus communis P. A. Munz 1918-5-5 2177 Orange Laguna Comment
  CAS-BOT-BC207158  Ricinus communis Ira L. Wiggins 1965-9-6 20345 Orange Margin of fallow field at Well No. 14, Kraemer Oil Estates, near end of county road leading to Rancho Santa Ana. Comment
  IRVC25524  Robinia pseudoacacia Fred M. Roberts 1987-11-17 3755 Orange Serrano Creek, near Trabuco Road west of Canada Road, 2.5km NNE El Toro Fire Station, Lake Forest 146 Comment
  RSA716086  Robinia pseudoacacia Fred M. Roberts, Carol A. Roberts 2006-8-18 6399 Orange San Juan Capistrano: San Juan Hills, along I-5, 0.9km by road N Las Ramblas overpass and 3.0km SE Krum Reservoir. 34 Comment
  UCR234146  Robinia pseudoacacia Dick Newell, Judy Booth 2012-3-30 238 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, along E Santiago Canyon Rd. at Irvine Lake 247 Comment
  POM201689  Romneya coulteri L. M. Booth 815 Orange Santa Ana Canyon Comment
  RSA171108  Romneya coulteri Robert F. Thorne 1963-7-26 32841 Orange Tin Mine Canyon above Beek's Spring, Trabuco District, Santa Ana Mountains, Cleveland National Forest. 762 Comment
  SD72770  Romneya coulteri F. R. Fosberg 1931-6-21 S 5094 Orange Lower Santiago Canyon, Orange County Comment
  UC1618115  Romneya coulteri Donald G. Nelson 1936-6-5 435 Orange Hills NE of Fullerton 91 Comment
  UCR228803  Romneya coulteri Dick Newell, Don Millar 2011-5-21 157 Orange Peninsular Range; Santa Ana Mtns., along service road to Irvine dam at eastern end of Irvine Regional Park 191 Comment
  UCR5669  Romneya trichocalyx Kenneth Hibberd 1966-5-8 660508- 01 Orange El Toro Rd. 3 mi. east of El Toro. 213 Comment
  CSUSB1432  Rorippa nasturtium-aquaticum Dave Cerf 1971-5-2 S. N. Orange Orange Park Acres. Windes Road. - 1/2 mile from the end of road (southwest). 243 Comment
  UCR130493  Rorippa nasturtium-aquaticum R. E. Riefner Jr. 2002-5-4 02- 97 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  RSA799648  Rorippa palustris Justin M. Wood 2010-9-29 2741 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
  POM306714  Rosa californica Henry J. Ramsey, Henry J. Ramsey 1938-6-5 I 668 Orange Laguna Beach, Irvine Comment
  RSA699216  Rubus ursinus R. H. McArthur 1934-2-27 s.n. Orange Santa Ana River at 1st Street Comment
  SD255272  Rubus ursinus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49789 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  RSA6066  Rumex conglomeratus Carl B. Wolf 1932-6-13 3718 Orange Storm drain at Malvern and Nicholas Aves; Fullerton. 53 Comment
  CAS-BOT-BC421600  Rumex crispus Scott D. White 1997-3-26 4811 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
  HSC17611  Rumex crispus C. L. Hitchcock, C. V. Muhlick 1964-3-17 23072 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  UCR228795  Rumex crispus Dick Newell, Don Millar 2011-5-10 151 Orange Peninsular Range; Santa Ana Mtns., along MWD service road between Outdoor Education Center and Fremont Canyon, 0.2 mi. above Peters Cyn. Rd. 193 Comment
  UCR96898  Rumex crispus Scott D. White 1993-4-28 1285 Orange Pacific slope, Tustin Marine Corps Air Station, NW of Peters Canyon Channel, between Moffett Dr. & Warner 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
  RSA5827  Rumex crispus Carl B. Wolf 1932-6-28 3795 Orange Bryant Ranch, north boundary of field. 9 Comment
  RSA713577  Rumex crispus R. E. Riefner Jr. 2005-7-9 5 -550 Orange City of Mission Viejo, Oso Creek, ca. 0.5 mi N of Paseo De Colinas on Camino Capistrano. 86 Comment
  RSA539350  Rumex hymenosepalus Fred M. Roberts, Karlin G. Marsh 1989-3-7 4199 Orange Lomas de Santiago: Loma Ridge, Hicks Canyon, 2.3km W Bee Survey Mark. 152 Comment
  POM12403  Rumex maritimus P. A. Munz 1922-9-2 6346 Orange Lakes in Laguna Canyon. 46 Comment
  POM48516  Rumex maritimus F. M. Reed 1925-8-15 4965 Orange Lakebed-Laguna Canon. Comment
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Jun 25 2013
  UC217857  Rumex maritimus P. A. Munz 1922-9-2 6346 Orange Laguna Canyon 45 Comment
  CAS-BOT-BC434975  Rumex obtusifolius A. C. Sanders; Fred M. Roberts 2008-7-7 36004 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir. 226 Comment
  RSA203  Rumex salicifolius J. T. Howell 1927-7-15 269 Orange Santa Ana River, Rancho Santa Ana [Botanic Garden] 152 Comment
  RSA65365  Rumex salicifolius J. T. Howell 1927-7-5 7689 Orange Rancho Santa Ana, Santa Ana River Canyon. Comment
  UCR241051  Rumex salicifolius var. denticulatus Robert DeRuff 2012-9-27 550 A Orange South Coast, Upper Newport Bay, upper end of Big Canyon near Jamboree Rd. 14 Comment
  IRVC24801  Rupertia physodes Fred M. Roberts, G. A. Marsh 1986-5-16 2909 Orange Ridge above San Juan Canyon, Sitton Peak Truck Trail, 4.0km W Sitton Peak, Santa Ana Mountains 670 Comment
  RSA304029  Ruppia maritima James R. Shevock 1973-9-30 3220 Orange Almost stagnant at the upper most regions of the upper Newport Back Bay, Newport Beach. Comment
  UCR219852  Sagina decumbens subsp. occidentalis Fred M. Roberts 1999-4-26 5201 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, ridge between Limestone Cyn and the Santiago Canyon Wash, 1.7 km SE Silverado School, 2.4 km north Bolero Lookout 411 Comment
  POM48698  Salicornia bigelovii I. M. Johnston 1924-8-29 s.n. Orange 2.5 miles north of Balboa. Comment
  UCR14054.1  Salicornia subterminalis Hyrum B. Johnson 1973-10-27 s.n. Orange Pacific Coast, Bolsa Chica State Beach 1 Comment
  UC1543078  Salicornia virginica Donald G. Nelson 1936-7-26 439 Orange near Coast Highway (base of cliff); Newport Bay Comment
  UC1929632  Salicornia virginica Valerie Soza, Kevin Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary 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
  POM48007  Salicornia virginica I. M. Johnston 1924-8-29 s.n. Orange 4 mi S of Santa Ana. Comment
  RSA478901  Salicornia virginica Anstruther Davidson 1907-09 1780 Orange Newport. Comment
  RSA4496  Salix exigua Carl B. Wolf 1932-3-16 2714 Orange Santa Ana River bottom, Rancho Santa Ana (between pear and walnut groves). 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
  RSA698844  Salix exigua Mabel Harvey s.n. Orange Silverado Canyon Comment
  RSA751524  Salix exigua A. C. Sanders, Fred M. Roberts 2008-8-7 35988 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  UCR195013  Salix exigua A. C. Sanders, Fred M. Roberts 2008-8-7 35988 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
  LA208640  Salix exigua var. hindsiana Carl B. Wolf; 1932-7-7 3845 Orange Rancho Santa Ana, along ditch on Bixby Ave., 1 km W of Hansen Rd, near town of Los Alamitos 7.5 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
  SBBG58937  Salix exigua var. hindsiana C. B. Wolf 1932-7-7 2848 Orange Rancho Santa Ana, Bixby Ave, 1 km W of Hansen Rd, near Los Alamitos 8 Comment
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Apr 11 2014
  UC492353  Salix exigua var. hindsiana Carl B. Wolf 1932-4-15 2954 Orange near Santa Ana R. Rancho Santa Ana (along river s of pear orchard); Santa Ana Canyon 120 Comment
  UC492355  Salix exigua var. hindsiana Carl B. Wolf 1932-4-15 2953 Orange near Santa Ana R. Rancho Santa Ana (along river s of pear orchard); Santa Ana Canyon 120 Comment
  CAS-BOT-BC108141  Salix gooddingii H. D. Geis 1902-1-1 533 Orange Santa Ana Comment
  SJSU207  Salix gooddingii Carl B. Wolf 1932-4-8 2950 Orange SE corner of pear orchard, Rancho Santa Ana, near R, Santa Ana Canyon 137 Comment
  CAS-BOT-BC108204  Salix hindsiana Carl B. Wolf 1932-4-15 2953 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon 120 Comment
  RSA735353  Salix laevigata R. H. McArthur 1934-3-1 s.n. Orange Santa Ana River at 1st Street. 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
  RSA650637  Salix laevigata var. laevigata Daniel Truong 1991-5-13 25 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  RSA793258  Salix lasiandra Robert F. Thorne 1984-1 s.n. Orange Newport Back Bay. Comment
  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
  POM122788  Salix lasiolepis Marcus E. Jones 1926-2-20 s.n. Orange East of Laguna. Comment
  RSA5309  Salix lasiolepis B. D. Stark 1933-1-7 4508 Orange Rancho Santa Ana, river bottom below ranch houses. 122 Comment
  RSA750119  Salix lasiolepis A. C. Sanders, Fred M. Roberts 2008-8-7 35985 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  RSA759169  Salix lasiolepis A. C. Sanders 2008-5-28 35444 Orange Lomas de Santiago, Bee Flat at mouth of Limestone Canyon. 264 Comment
  RSA0070789  Salix lasiolepis CNPS Accuracy Assessment Team 2014-4-30 1123 Orange Peters Canyon Regional Park. Comment
  RSA731917  Salix lasiolepis var. lasiolepis Fred M. Roberts, Sandra Leatherman 2007-11-27 6662 Orange Anaheim: Santa Ana River, Santa Ana Canyon, just west of Horseshoe Bend on S side of E La Palma Ave., about 0.3km E Weir Cyn. Rd. bridge. 100 Comment
  CAS-BOT-BC126310  Salix sessilifolia Helen D. Geis 1902-1-1 554 Orange Santa Ana River Comment
  CAS-BOT-BC126313  Salix sessilifolia Carl B. Wolf 1932-7-7 3845 Orange Rancho Santa Ana, along ditch on Bixby Ave., 1 km. west of Hansen Road, near town of Los Alamitos 7 Comment
  RSA700934  Salix sessilifolia var. leucodendroides Keith E. Hoffmaster 1927-6-12 s.n. Orange Near Santa Ana Comment
  CDA1083  Salsola australis D. G. Kelch 2006-12-9 6 .536 Orange Along Newport Back Bay Dr. in side canyon. Comment
  SEINET5586232  Salsola australis A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-1 37200 Orange Peninsular Range; Santa Ana Mtsn.: Lomas de Santiago, Bee Flat at mouth of Limestone Canyon. 264 Comment
  RSA270  Salsola tragus J. T. Howell 1927-7-27 499 Orange Near ranch houses, Rancho Santa Ana 152 Comment
  UC213455  Salsola tragus D. L. Crawford Sept. 1915 Orange Huntington Beach Comment
  UCLA55680  Salvia C. Epling and H. Lewis 1940-4-21 Orange 6 mi e San Juan Capistrano Comment
  RSA697874  Salvia apiana L. C. Hull 1934-4-27 s.n. Orange Trabuco Canyon. Comment
  UCR193050  Salvia apiana A. C. Sanders, Fred M. Roberts 2008-6-17 35487 Orange Peninsular Range; Santa Ana Mtns., 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
  RSA542481  Salvia columbariae Fred M. Roberts 1988-3-15 3873 Orange Rancho Mission Viejo: Central Gabio Canyon, 7.0 km E Playa Survey Marker. 162 Comment
  CAS-BOT-BC233671  Salvia leucophylla Carl B. Wolf 1943-6-8 11448 Orange Rancho Santa Ana Botanic Garden, Santa Ana River Canyon 198 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
  RSA587882  Salvia leucophylla Fred M. Roberts 1990-5-8 4617 Orange Chino Hills: Soquel Canyon, c. 1.2 km NNW of Gilman Peak. 240 Comment
  UCR222877  Salvia leucophylla T. B. Salvato 2010-10-27 5126 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
Read comments
Dec 1 2016
  CAS-BOT-BC229980  Salvia mellifera R. J. Barr 1967-5-11 67 -178 Orange Roadside east of El Toro, Santa Ana Mountains 182 Comment
  RSA434146  Salvia mellifera Albert J. Perkins 1912-4-27 s.n. Orange Eastern end, Aliso Canyon. Comment
  RSA5278  Salvia mellifera B. D. Stark 1932-12-15 4454 Orange Rancho Santa Ana 145 Comment
  RSA628596  Salvia mellifera J. West 1994-4-5 s.n. Orange Upper Bluebird Canyon, SE of Laguna Beach, at a park in the hills E of the head of Bluebird Canyon Road and E of housing developments Comment
  RSA733967  Salvia mellifera Keith E. Hoffmaster 1927-4-8 424 Orange Santa Ana Mountains. Comment
  UC1618084  Salvia mellifera Donald G. Nelson 1935-3-17 170 Orange Carbon Canyon Comment
  UCR239634  Salvia mellifera Fred M. Roberts 2012-4-24 7502 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
  POM3988  Salvia spathacea P. A. Munz 1918-5-4 2198 Orange Laguna Canyon. Comment
  POM4055  Salvia spathacea I. M. Johnston 1918-5-4 951 Orange Hills back of Laguna Beach. 30 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
  RSA588796  Sanicula arguta Fred M. Roberts, Dave Bontrager 1990-4-18 4564 Orange Rancho Mission Viejo: ridge between Christianitos and Gabino Canyons (Riverside Cement Lease Holding), 5.5 km SE Playa Survey Marker. 152 Comment
  UCR205956  Sanicula arguta Scott D. White 2003-3-21 8813 Orange Peninsular Range/Santa Ana Mtns, Foothills [above] Rancho Mission Viejo; E-facing slopes above an unnamed tributary to San Juan Creek 183 Comment
  UCR220955  Sanicula arguta Dick Newell, Don Millar 2010-3-16 012 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, above Agua Chinon at Box Canyon Rd, 2.81 miles north of Hwy 241 toll road and 2.77 miles east of 133 toll road 427 Comment
  UCR191777  Sanicula bipinnatifida A. C. Sanders, Fred M. Roberts 2008-3-25 34569 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
  SD236165  Sanicula crassicaulis A. C. Sanders, Fred M. Roberts 2008-5-6 35267 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, slope SE of road junction along ridge road, near head of Aqua Chinon Cnayon, 2.4 miles north of El Toro 470 Comment
  UC1006699  Sanicula crassicaulis C. Ritchie Bell 1953-2-22 1387 Orange near sw edge of San Clemente State Park, above old dam San Clemente State Park Comment
  UC1377706  Sanicula crassicaulis John Ingram 1960-3-29 264 Orange 2 mi above O'Neill Park (Trabuco Canyon); Trabuco Canyon Comment
  UCR256938  Sanicula crassicaulis Naomi Fraga, Duncan S. Bell 2009-5-11 2722 Orange Peninsular Range; Santa Ana Mountains, Chiquita Trail, Lion Canyon 762 Comment
  UCR27229  Sanicula crassicaulis E. W. Lathrop 1966-5-1 6262 Orange Santa Ana Mtns., 5 mi east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest 400 Comment
  RSA471472  Sanicula crassicaulis Christopher Davidson 1977-5-18 5636 Orange Cleveland National Forest, Falcon campground. 1006 Comment
  SEINET13945251 Image available Sanicula tuberosa Kay Raeder 1955-1 494 Orange Just above Flying Cow Ranch, San Jose Hills, Alt 1500 ft. 457 Comment
  SD37460  Sarcocornia pacifica Edith A. Purer 1932-8-31 4876 Orange Moist location on sand dunes. Comment
  RSA696280  Sarcocornia perennis Keith E. Hoffmaster 1934-7-15 s.n. Orange Santa Ana Mts (Modjeska) Comment
  SD136180  Satureja chandleri Kirsten Winter 1993-4-9 Orange Along San Juan and Chiquito trails and in Chiquito Springs area, southeast part of county 609 Comment
  SD41969  Satureja chandleri Darley F. Howe 1947-4-29 1555 Orange San Juan Creek Comment
  RSA734917  Schinus molle A. C. Sanders, Fred M. Roberts 2008-6-17 35473 Orange Peninsular Range; Santa Ana Mtns: Lomas de Santiago, Augustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  UCR80018  Schinus molle Scott D. White 1992-10-1 951 Orange City of Brea, immediately north of Carbon Canyon Road & east of Placentia Ave. c. 1 mi (airline) S-SE of Tonner Canyon. 183 Comment
  CAS-BOT-BC111475  Schoenoplectus americanus John Thomas Howell 1927-6-30 2620 Orange Mucky soil of canal bank alkaline coastal plain, 7 mi east of Long Beach. 15 Comment
  UCR247918  Schoenoplectus americanus Fred M. Roberts 2012-7-18 7673 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
  POM12405  Schoenoplectus californicus Phillip A. Munz 1922-9-2 6351 Orange Ponds in Laguna Canyon 46 Comment
  RSA0071942  Schoenoplectus californicus CNPS Accuracy Assessment Team 2014-5-9 9346 Orange Loma Ridge West. Comment
  RSA91  Schoenoplectus californicus J. T. Howell 1927-6-30 243 Orange Bryant Ranch near Long Beach. 15 Comment
  POM202161  Schoenoplectus maritimus L. M. Booth 1932-5-24 1104 Orange Marsh of salt marsh, Newport Lagoon. Comment
  POM47587  Schoenoplectus maritimus I. M. Johnston 1924-8-29 s.n. Orange 4 miles N of Balboa. Comment
  POM6408  Scirpus acutus var. occidentalis Phillip A. Munz, L. T. Street, G. Williams 1914-5-3 2661 Orange Santa Ana River Canyon. Comment
  RSA226634  Scirpus acutus var. occidentalis Christopher Davidson, Gerald L. Benny 1971-6-15 1540 Orange Brea Canyon, 0.5 mile N of Central Avenue, along Brea Creek, near Brea Oil Co. wells. Comment
  CDA23122  Scirpus cernuus Mark A. Elvin, D. G. Kelch 2006-12-9 5302 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  UCR193764  Scirpus cernuus A. C. Sanders, Fred M. Roberts 2008-7-3 35708 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
  RSA0012747  Scrophularia californica subsp. floribunda Fred M. Roberts 2012-5-10 7572 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
  IRVC3587  Selaginella bigelovii A. S. Boughey 143 Orange [San Juan Canyon], Ortega Hwy, 1mi E San Juan Guard Sta. Santa Ana Mountains Comment
  RSA15  Selaginella bigelovii John Thomas Howell 1927-7-24 473 Orange Claymine Canyon, near Sierra Peak 167 Comment
  UCSB52471  Selaginella bigelovii Roberts, Fred 1983-1-7 Orange Laguna Beach: west flank of Temple Hill, Park Canyon, 1.7km NE Thurston High School; 1.7km SE Bench Mark 104. 230 Comment
  CAS-BOT-BC363479  Senecio californicus P. C. Everett 1935-3-15 6294 Orange Rancho Santa Ana, Santa Ana Canyon near Corner Post 3938 182 Comment
  RSA650644  Senecio californicus D. E. Bramlet 2000-4-7 2948 Orange Upper Blind Canyon. The site is found beside the SCE maintenance road and 762m west of the mainstem of Blind Canyon. This locality is 1.7km east of Weir Canyon. 354 Comment
  UCSB52922  Senecio californicus Roberts, Fred 1983-3-10 Orange Dana Point Headlands: south of Dana Strand Rd., 0.8km W Dana Point Harbor; 1.0km SW Richard Henry Dana School 66 Comment
Read comments
Dec 12 2018
  POM201687  Senecio flaccidus var. douglasii L. M. Booth 818 Orange Santa Ana Canyon bottom 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
  SBBG122031  Senecio linearifolius S. D. White 2003-7-7 9613 Orange W of intersection of Shady Cyn Crk with Bonita Cyn Drive, UC Irvine Campus 70 Comment
  SD231234  Senecio linearifolius var. linearifolius Scott D. White 2004-7-7 10606 Orange South Coast: Laguna Niguel. Along both sides Pacific Island Dr., at and near small unmarked square structure on southwest side of street. 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
  RSA4779  Senecio vulgaris James Snow s.n. Orange Bryant Ranch, near Long Beach. South East 1/4 Section 25, Township 4S, Range 12 W, Station #1 plant #1 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
  RSA443821  Sesuvium verrucosum Gordon Marsh 1975-7-28 s.n. Orange Huntington Beach: East Garden Grove-Wintersburg Flood Control Channel, just N of Warner St. bridge crossing, (No. C05) Comment
  RSA5954  Sesuvium verrucosum C. B. Wolf 1932-7-7 3847 Orange Bryant Ranch, 100 ft. N of Bixby Ave. & 7/10 miles W of Hansen road., (100 ft. N & 2/10 mi. W of SE corner of NE 1/4 of NW 1/4 of sect. 34 T4S R11W) Comment
  CLARK-A1528-930  Setaria geniculata Patricia A. Andrews 1975-6-26 5917 Orange Capistrano Bay Beach 9 Comment
  CAS-BOT-BC243592  Setaria parviflora Carl B. Wolf 1932-6-13 3725 Orange Malvern and Nicholas Aves., Fullerton 53 Comment
  POM50697  Setaria parviflora Le Roy Abrams s.n. Orange Diet bench near Santa Anar. Comment
  POM50701  Setaria parviflora H. Droege 1902-05 s.n. Orange Santa Ana Orange County Comment
  RSA159413  Setaria parviflora I. L. Wiggins, John H. Thomas 1962-6-27 309 Orange Orange County, weeds near intersection of 18th and Main Streets, Santa Ana Comment
  IRVC1829  Setaria sphacelata I. L. Wiggins 1965-9-26 20266 Orange California State College at Fullerton: orange grove just S of Letters and Science Building. Southern Coastal Comment
  IRVC26690  Sidalcea malviflora subsp. sparsifolia Mark A. Elvin 2004-4-4 3232 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA0040089  Sidalcea neomexicana Sandra Leatherman 2014-3-18 2014 -1 Orange Santa Ana Mountains region: South Orange County; northeast of Antonio Parkway and Sendero Way; adjacent to the Chiquita Reclamation Plant access road. 76 Comment
  CAS-BOT-BC205740  Sidalcea neomexicana subsp. thurberi Carl B. Wolf 1936-4-22 7770 Orange East of Los Alamitos, at Northwest corner of Hansen Road & Bryant Ave. 15 Comment
  CAS-BOT-BC205743  Sidalcea neomexicana subsp. thurberi LeRoy Abrams 1903-4-17 3257 Orange Between Tustin and Myford Comment
  RSA88053  Sidalcea neomexicana subsp. thurberi C. L. Hitchcock 1952-5-30 s.n. Orange About 100 yards north of Katella Ave. to west of Hanson St., about 11 miles east of Long Beach Comment
  CAS-BOT-BC434367  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
  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
  SEINET3155822  Silene W. B. Crockatt 1908-6-1 sn Orange Capistrano valley 76 Comment
  UCR191354  Silene antirrhina A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34641 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
  RSA477883  Silene gallica M. B. Dunkle 1933-4-9 3272 Orange Dana Point. Comment
  RSA603348  Silene gallica Scott D. White 1997-6-12 5326 Orange East of San Juan Capistrano: San Juan Creek between Highway 74 bridge and Mission Vieja site, i.e. ca. 2-4 miles E of I-15/Highway 74 junction. 46 Comment
  UCSB47971  Silene gallica Roberts, Fred 1980-2-17 Orange Dana Bluffs; along Scenic Drive Rd.; NW and above Dana Point Harbor, Dana Point 58 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
  UCR242755  Silene laciniata subsp. 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
  IRVC21393  Silene laciniata subsp. major A. S. Boughey 1968-7-9 413 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  POM339144  Silene laciniata subsp. major F. R. Fosberg 1930-6-15 52854 Orange Santiago Canyon above Modjakas Home, Santa Ana Mts. Comment
  RSA288  Silene laciniata subsp. major J. T. Howell 1927-6-26 217 Orange Claymine Canyon near Sierra Peak 305 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
  RSA0086988  Silene platyota Valerie L. Soza, LeRoy Gross 1999-6-10 514 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off Main Divide Road. 1524 Comment
  RSA0029937  Sisymbrium altissimum Fred M. Roberts 2013-5-15 7773 Orange San Joaquin Hills: Buck Gully, north slope, along south side of San Joaquin Hills Drive, 1.6 km NNW summit Pelican Hill. 174 Comment
  RSA650820  Sisymbrium altissimum Daniel Truong 1991-5-5 14 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of closed area. Comment
  IRVC1183  Sisymbrium irio L. McCabe 1965-4-25 Orange Corona del Mar. Newport Beach Comment
  CAS-BOT-BC75236  Sisymbrium irio Ira L. Wiggins 1966-2-5 20425 Orange Roadside along Newport Boulevard, 4.5 miles north of Orange County Fairgrounds. Comment
  RSA732236  Sisymbrium officinale A. C. Sanders, Fred M. Roberts 2008-4-22 35047 Orange Lomas de Santiago, slopes of south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado. 457 Comment
  JEPS89207  Sisymbrium orientale Rimo Bacigalupi, L. Heckard, P. C. Hutchison 1962-3-16 8229 Orange 2 mi n of Doheny Beach State Park (along U.S. 101) Comment
  RSA0015957  Sisyrinchium bellum Fred M. Roberts 2012-4-24 7536 Orange San Joaquin Hills: Buck Gully, above main trail, 2 km W Signal Peak and about 0.4 km S San Joaquin Hills Road. 155 Comment
  RSA697825  Sisyrinchium bellum Anonymous s.n. Orange Near Orange Co. Park. 793 Comment
  CDA20833  Solanum americanum P. Akers 2006-3-25 PA 7 -06 Orange Peninsular Ranges; Yorba Linda. Santa Ana River S of La Palma Dr, 0.6-0.9 mi E of Yorba Linda Dr. 121 Comment
  POM201716  Solanum americanum L. M. Booth 1932-6-28 1213 Orange Bolsas Marsh. Comment
  RSA427318  Solanum americanum J. C. Marvin 1923-4-1 s.n. Orange Trabuco Canyon Comment
  SEINET237157  Solanum americanum Scott D. White, Brain Leatherman 1997-6-12 5309 Orange Santa Ana Mtn. foothills. East of San Juan Capistrano: San Juan Creek between Highway 74 bridge and Mission Vieja site 250 Comment
  UCR137448  Solanum americanum Scott D. White, Brian Leatherman 1997-6-12 5309 Orange Santa Ana Mtn. foothills, E of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e. c. 2-4 mi east of Hwy I-15/Hwy 74 junction 76 Comment
  HSC21298  Solanum douglasii C. L. Hitchcock, C. V. Muhlick 1964-3-17 23063 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  JEPS12101  Solanum douglasii Alice King 1908-3-1 Orange Santa Ana Comment
  UC1292575  Solanum douglasii C. L. Hitchcock, C. V. Muhlick 1964-3-17 23063 Orange 8 mi e of Yorba Linda (Santa Ana Canyon); Santa Ana Canyon Comment
  UCR281556  Solanum douglasii Mitch Provance, Jeremiah George 2017-3-20 317- 119 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
  UCSB56515  Solanum lanceolatum Marsh, G.; Marsh, K. 1976-4-8 Orange Tustin, First Street Comment
  POM201712  Solanum physalifolium var. nitidibaccatum L. M. Booth 1932-7-30 1344 Orange Santa Ana River Comment
  RSA799943  Solanum rostratum Justin M. Wood 2011-6-28 4308 Orange South Coast: City of Costa Mesa; Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  CAS-BOT-BC156480  Solanum umbelliferum J. T. Howell 1927-7-24 2822 Orange Santa Ana River bottom, Santa Ana [Canon] Canyon 152 Comment
  HSC21322  Solanum umbelliferum S. M. Clapp 1966-4-7 19 Orange 3 mi. from Modjeska Canyon towards Silverado Canyon 152 Comment
  UCR192098  Solanum umbelliferum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35284 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  RSA650147  Solanum umbelliferum Shlomo Gat 1959-5-9 31 Orange near La Vida Comment
  RSA0039365  Solanum virginianum Justin M. Wood 2013-9-5 5120 Orange Santa Ana Canyon: Between the Santa Ana River and the Green River Golf Course, in a recently planted restoration area. Roughly 0.5 miles west of the Riverside County Line. 127 Comment
  RSA787502  Solanum xanti Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49696 Orange Northern Santa Ana Mountains: Sierra Peak Comment
  UCR131698  Solanum xanti C. B. Wolf 1931-3-6 01862 Orange Santa Ana Mtns., 1 mile north of base of Modjeska Grade, west slope of mtns. 305 Comment
  RSA0045319  Solanum xanti G. Jentges 1932-4-9 35 Orange Orange Park Acres. Comment
  CDA25208  Solidago californica A. C. Sanders, Fred M. Roberts 2008-8-7 35998 Orange Peninsular Range; Santa Ana Mountains.; Middle section of Weir Canyon, 1.15 miles (air) SSE of Walnut Canyon Reservoir. 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
  RSA663169  Solidago californica R. E. Riefner 2000-8-8 20 -723 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  UCR186132  Solidago occidentalis T. B. Salvato, Katie Kurtz 2006-10-15 1922 Orange South Coast, Irvine, San Diego Creek flood control channel, near Michelson Drive and Harvard Avenue 6 Comment
  IRVC9106  Sonchus oleraceus B. Gittins 1963-3-22 70 Orange Orange Coast College Campus. Costa Mesa Comment
  IRVC920  Sonchus oleraceus L. Stilgenbauer 1965-4-15 Orange Corona del Mar, 339 Milford. Newport Beach Comment
  JEPS88920  Sonchus oleraceus Rimo Bacigalupi, and L. Heckard, P. C. Hutchison 1962-3-16 8231 Orange 2 mi n Doheny Beach State Park (along U.S. 101) Comment
  RSA658626  Sonchus oleraceus John L. Stevens 1969-5-5 39 Orange On CSF campus, in flower bed. 158 Comment
  RSA750063  Sorghum bicolor A. C. Sanders, Fred M. Roberts 2008-9-18 36066 Orange Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 320 Comment
  CAS-BOT-BC235345  Sorghum halepense Ira L. Wiggins 1965-10-18 20277 Orange Vacant lot NE corner of Chapman Ave. and Victor Dr., Fullerton Comment
  IRVC24181  Sorghum halepense Fred M. Roberts 1985-9-17 2258 Orange Irvine; lot between Walnut Avenue, Harvard Avenue and Peter's Creek Channel. southern coastal 20 Comment
  RSA733937  Sparganium eurycarpum R. H. McArthur 1934-5-17 s.n. Orange 0.5 mi east Greenville. Comment
  CDA780  Sparganium eurycarpum subsp. eurycarpum E. Dudley 1948-7-22 Orange Santa Ana, Flood Control Ditch. 0 Comment
  CAS-BOT-BC235380  Spartina foliosa Joseph Andorfer Ewan 1932-7-28 7709 Orange East end of Newport Bay Comment
  UC520317  Spartina foliosa Joseph Andorfer Ewan 1932-7-28 7709 Orange e end Newport Bay Comment
  SEINET10630772  Spartium junceum Greg Gust, Leith Nye 2005-3-12 Gust 565 Orange Cleveland National Forest, on Hwy 74 ca. 0.5 m W of county boundary with Riverside at a pullout. 401 Comment
  UCR228775  Spartium junceum Dick Newell, Don Millar 2011-5-24 164 Orange Peninsular Range; Santa Ana Mtns., Silverado Canyon Rd. c. 1 mile above Blackstar Canyon Road 333 Comment
  RSA659437  Spartium junceum P. Shirokawa 1998-5-7 13 Orange Cleveland National Forest- Trabuco Ranger District, 0.3 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 808 Comment
  RSA0097843  Spergularia macrotheca P. A. Munz 1918-5-5 2204 Orange Laguna Beach. Comment
  CAS-BOT-BC390309  Spergularia macrotheca var. macrotheca Scott D. White 1997-3-26 4821 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
  RSA0098512  Spergularia marina Scott D. White 1998-6-26 6780 Orange South Coast: Univ. of Calif. Irvine Campus. Along mapped intermittent blueline stream just N of Bonita Cyn Dr. 61 Comment
  RSA0098515  Spergularia marina P. A. Munz 1923-4-1 6911 Orange Laguna Lakes. 61 Comment
  RSA0098518  Spergularia marina D. L. Crawford 1916-7-26 s.n. Orange Aliso Canyon. Comment
  RSA0098539  Spergularia marina Joseph A. Ewan 1931-7-31 4760 Orange Smeltzer. Comment
  RSA698116  Sphaeralcea fasciculata R. H. McArthur 1934-4-21 s.n. Orange Gulch W. of Irvine Park. Comment
  RSA733957  Sphaeralcea fasciculata Keith E. Hoffmaster 1927-5-15 458 Orange Lemon Heights. Comment
  IRVC26743  Spiloxene ovata Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3161 Orange UCI Arboretum Southern Coastal 15 Comment
  UCR207566  Sporobolus indicus O. F. Clarke 2004-1 s.n. Orange South Coast, Yorba Regional Park, between Yorba Linda and Anaheim Hills 91 Comment
  UCR231057  Stachys A. C. Sanders, Kent Beaman 2011-9-27 39913 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail, 3.4 km NNW (340 deg. ) of Santiago Peak 1088 Comment
  SEINET9366755  Stachys ajugoides Unknown 2008-6-17 35488 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, West Loma Ridge Spur Road c. 1 km E of Sheriff's Training Facility and 1.6 km SW of Irvine Lake, between hwys 241 and 261 (Black Star Canyon 7.5' topo.) East-facing burned slope, former brush patch dominated by Rhus laurina, surrounded by grassland. Comment
  UCLA70983  Stachys ajugoides var. rigida C. Epling, H. Lewis Jun 1940 Orange near Summit (Ortega Rd.); Santa Ana Comment
  RSA697868  Stachys bullata L. C. Hull 1934-4-15 s.n. Orange Laguna Hills Comment
  RSA797911  Stachys rigida subsp. rigida Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49821 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  UC1377828  Stebbinsoseris heterocarpa John Ingram 1960-3-29 261 Orange 3 mi above O'Neill Park (Trabuco Canyon); Trabuco Canyon Comment
  CAS-BOT-BC393823  Stellaria media Ira L. Wiggins 1966-2-25 20475 Orange Firestone Boy Scout Reservation, in hills E of Brea Comment
  CAS-BOT-BC393820  Stellaria media Ira L. Wiggins 1965-12-5 20368 Orange 2 mi. E of Atwood, on N side of Orangethorpe Ave. Comment
  UCR67009  Stenotaphrum secundatum A. C. Sanders 1990-10-6 10191 Orange Newport Bay, North Star County Beach Area on the SW end of the Bay, c. 2 km inland of Hwy 1. 3 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
  RSA684404  Stephanomeria diegensis Scott D. White, Matt Carlton 2003-11-20 9878 Orange Santa Ana Mountain foothills: San Juan Creek in San Juan Capistrano. 37 Comment
  RSA719419  Stephanomeria exigua subsp. exigua Fred M. Roberts, Lee Ann Caranza 2006-10-25 6459 Orange Dana Point Headlands south of Margarite Drive, 0.6km W Marine Institute and 1km SW Cook Sch. 58 Comment
  RSA743387  Stephanomeria exigua subsp. exigua Fred M. Roberts 2008-7-10 7065 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  UCR193273  Stipa cernua A. C. Sanders, Fred M. Roberts 2008-6-17 35507 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, Windy Ridge Rd., saddle on ridge at head, above the Eastern Transportation Corridor 400 Comment
  UCR190994  Stipa coronata A. C. Sanders, Fred M. Roberts 2008-4-22 35006 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
  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
  UCR191474  Stipa pulchra A. C. Sanders, Fred M. Roberts 2008-4-8 34741 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  RSA0048676  Stipa pulchra Keith E. Hoffmaster 1935-3-17 551 Orange Near El Toro (Trabuco Road). Comment
  IRVC27015  Strumaria truncata A. C. Sanders, Mark A. Elvin 2003-11-9 27357 Orange Irvine: UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. Southern Coastal 15 Comment
  RSA383489  Stuckenia pectinata Anstruther Davidson 1921-9-1 s.n. Orange Laguna Beach, Orange County Comment
  POM6313  Stuckenia pectinata L. T. Street, Williams 1919-5-4 2690 Orange Laguna Lakes. [now Big Laguna Lake, San Diego Co.] Comment
  RSA6315  Stuckenia pectinata L. T. Street, Williams 1919-5-4 2690 Orange Laguna Lakes. [now Big Laguna Lake, San Diego Co.] Comment
  HSC6239  Stylocline gnaphaloides J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  RSA734653  Stylocline gnaphaloides A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35311 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir. 346 Comment
  UCR192110  Stylocline gnaphaloides A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35311 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  UCR238205  Stylocline gnaphaloides Mark A. Elvin 2003-3-30 2391 Orange South Coast, north side of UC Irvine Preserve, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  CAS-BOT-BC422881  Stylomecon heterophylla Agnes M. Bowman 1899-5-1 s.n. Orange Santiago Cr. Comment
  JEPS32500  Styrax officinalis var. redivivus Frank W. Peirson 1923-5-5 3493 Orange n side Trabuco Canyon; Santa Ana Mts., n side of Trabuco Canyon 640 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
  SD122676  Styrax redivivus Reid Moran 1979-5-9 27196 Orange north slope San Juan Canyon, Santa Ana Mountains 380 Comment
  RSA758770  Suaeda esteroa Anstruther Davidson 1907-9-1 1782 Orange Newport Comment
  UCSB36525  Suaeda esteroa Ferren, Wayne; Whitmore, S. 1980-8-27 Orange Newport Backbay, along Backbay Drive; ca. 1.5 km. NE of Rt. 1, Newport Beach Comment
  LA204738  Suaeda taxifolia Norman C. Cooper; 1942-11-9 883 Orange Balboa Comment
  POM259490  Suaeda taxifolia A. C. Keller 1937-11-26 s.n. Orange Loc. Alt. 20 to 40 ft. on cliffs, Doheny Palisades, Highway 101 Comment
  SDSU5605  Suaeda taxifolia Thomas A. Zink 1971-4-1 Orange In Newport Back Bay about 1 mile west of Jamboree Rd. 3 Comment
  UC536967  Suaeda taxifolia Lawrence M. Booth 1932-6-29 1232 Orange Newport Bay Comment
  UC971738  Suaeda taxifolia L. M. Booth 1932-6-29 1232 Orange Newport Bay Comment
  UCD99537  Suaeda taxifolia Ronni Stachelek; Bob Anderson, Frances Schropshire 1995-3-23 51 Orange Newport Beach, Upper Newport Bay, Back Bay Dr., ca. 100 m. N of San Joaquin Dr. Comment
  LA204603  Symphoricarpos mollis W. E. Pequegnat; 1937-8-19 37 Orange Santa Ana Mountains, Trabuco Peak Comment
  UCR258868  Symphyotrichum defoliatum Naomi Fraga, Duncan S. Bell, Sarah J. De Groot 2009-9-11 3155 Orange Peninsular Ranges; Santa Ana Mountains region, Blue Jay Campground 910 Comment
  CAS-BOT-BC223956  Tamarix ramosissima Scott D. White; Brian Leatherman 1997-6-12 5336 Orange Santa Ana Mtn. foothills. East of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi E of I-15/Hwy 74 jtn. 75 Comment
  UCR197675  Tamarix ramosissima A. C. Sanders, Fred M. Roberts 2008-9-18 36070 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  IRVC937  Taraxacum officinale D. Pfirrmann 1965-4-30 Orange 2129 Orange Ave. Costa Mesa Comment
  UCR192995  Taraxacum officinale A. C. Sanders, T. B. Salvato 2008-5-13 35383 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
  RSA455504  Tauschia parishii Christopher Davidson 1977-5-18 5607 Orange Cleveland National Forest; Santiago Peak (on Orange-Riverside Co. line) 1706 Comment
  MACF017377  Taxodium distichum Trudy R. Ericson 1974-6-13 164 Orange Little Cypress Road at edge of Little Cypress Bayou about 60 ft. from edge of road, about 6 mi. east of Orange Comment
  SD233352  Thalictrum fendleri var. polycarpum R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49823 Orange Santa ana Mountains: Trabuco Canyon. Comment
  RSA749429  Thysanocarpus curvipes Fred M. Roberts 2008-4-14 6893 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork, 3.4 km E Robbers Peak, Irvine Ranch Conservancy. 433 Comment
  RSA697488  Thysanocarpus laciniatus Wilma Griset 1931-3-15 s.n. Orange Eagle Rock Comment
  RSA697184  Tillaea erecta J. R. Bruff s.n. Orange Orange Co. Park. Comment