Search Results — 2000 specimen records retrieved (1643 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  POM201767  Abronia maritima L. M. Booth 1932-5-25 1113 Orange Balboa Island, Newport Bay. Comment
  RSA764470  Abronia maritima Doris Bowers 1957-5-16 207 Orange Corona Del Mar 3 Comment
  SD181444  Abronia maritima Valerie Sosa, Kevin Clark, LeRoy Gross, et al. 2001-4-4 1116 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge 3 Comment
  SEINET893685  Abronia maritima Norman C. Cooper 1942-1 888 Orange Balboa. Comment
  RSA678513  Abronia umbellata subsp. umbellata Valerie L. Soza, K. Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1130 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  JEPS61217  Abronia umbellata var. umbellata L. M. Booth 1932-5-25 1113 Orange Balboa Island; Newport Bay Comment
  JEPS61233  Abronia villosa L. M. Booth 1932-7-25 1308 Orange Coastal Santa Ana River Comment
  RSA38697  Abutilon theophrasti E. L. Paddock 1943-9-10 s.n. Orange Santa Fe Railroad, west of Esperanza Station Comment
  SEINET891576  Acacia baileyana R. J. Barr 1964-1 64 -590 Orange Roadside near Capistrano Beach Comment
  UCR140879  Acacia cyclops Robert DeRuff 1987-1 294 Orange Southern Coast, Newport Beach, Upper Newport Bay, on Castaway's Bluff 24 Comment
  IRVC29869  Acacia cyclops Mark A. Elvin, Dean Kelch 2006-12-9 5291 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
  SEINET947423  Acacia podalyriifolia R. J. Barr 1964-1 64 -588 Orange Roadside near Capistrano Beach Comment
  UCR239623  Acacia redolens Fred M. Roberts 2012-4-24 7497 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
  IRVC29884  Acacia saligna Mark A. Elvin, D. Kelch, Barry S. Nerhus, Patricia Iluore 2006-12-9 5325 Orange Newport Backbay; along Bayside Drive ca. 100 m W of Eastbluff Dr. Southern Coastal 5 Comment
  CAS-BOT-BC333253  Acer macrophyllum James R. Shevock 1974-3-31 3329 Orange In Trabuco Canyon along FS road 5S13. Santa Ana Mts., Cleveland National Forest 548 Comment
  RSA797915  Acer macrophyllum Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49825 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  RSA734972  Acer saccharinum A. C. Sanders, Fred M. Roberts 2008-6-17 35478 Orange Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  SD152962  Achillea millefolium Steve Boyd, Tim Ross 1992-5-20 7455 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area; western edge of the wilderness in Lucas Canyon along a new sedtion of trail heading up major side canyon northward to Sitton Peak Road. 305 Comment
  RSA416203  Achillea millefolium var. californica N. C. Cooper 1944-6-4 1345 Orange San Juan Canyon. 305 Comment
  RSA701599  Achnatherum coronatum Rankin s.n. Orange Silverado Comment
  UCSB42219  Acmispon americanus Roos, John 1965-6-16 Orange Dana Point near Doheney Beach Comment
  UCSB48021  Acmispon americanus Roberts, Fred 1980-7-1 Orange Irvine; San Diego Creek, 0.2 km NE Interstate 5; 2.0 km WSW Bench Mark 343 85 Comment
  UCSB47975  Acmispon glaber Roberts, Jr., Fred 1980-2-17 Orange Along Dana Strand road on the north side, on the bluff west of Dana Marina, Dana Point 56 Comment
  SEINET5327559  Acmispon glaber var. glaber I. W. Clokey 1932-3-1 5329 Orange Laguna Beach; slopes facing ocean 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
  UCD170824  Acmispon micranthus A. C. Sanders; Fred M. Roberts 2008-3-25 34520 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills. 259 Comment
  CAS-BOT-BC29185  Acourtia microcephala LeRoy Abrams 1901-6-16 1855 Orange Trabuco Canyon Comment
  CAS-BOT-BC29186  Acourtia microcephala J. T. Howell 1927-6-22 2571 Orange Hills on north side of Santa Ana Canyon 152 Comment
  RSA788092  Acourtia microcephala R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49626 Orange Santa Ana Mountains: San Juan Canyon, along Ortega Highway (74) across from San Juan Fire Station Comment
  UC1543097  Acourtia microcephala Donald G. Nelson 1936-6-5 434 Orange hills n Fullerton Comment
  UC639077  Acourtia microcephala P. C. Everett 1939-8-5 Orange Anaheim Comment
  UCD128506  Acroptilon repens Ethelbert Johnson 1922-8-8 s.n. Orange Greenville. Comment
Read comments
Apr 10 2016
  CAS-BOT-BC133135  Adenostoma fasciculatum John Thomas Howell 1927-7-29 2873 Orange On N. side of Santa Ana [Canon] Canyon 243 Comment
  UCR252214  Adenostoma fasciculatum Amanda C. Swanson 2013-4-21 24 Orange Peninsular Range; Santa Ana Mtns., hiking trail across from Tucker Wildlife Sanctuary, less than 0.1 mi. from trailhead 434 Comment
  RSA12898  Adenostoma fasciculatum var. fasciculatum E. R. Johnson, Percy C. Everett 1935-1-14 6288 Orange Open firebreak on slopes of Sierra Peak, along road to Claymine Canyon 610 Comment
  CDA21565  Adiantum capillus-veneris Mark A. Elvin, D. G. Kelch 2006-12-9 5323 Orange Southern Coastal; Newport Backbay; along Bayside Drive ca. 100 miles west of Eastbluff Drive. Comment
  UCR193804  Adiantum capillus-veneris A. C. Sanders, Fred M. Roberts 2008-7-16 35836 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin 391 Comment
  RSA1498  Adiantum jordanii J. T. Howell 1929-2-6 1220 Orange Claymine Canyon, Santa Ana Mountains 213 Comment
  RSA739331  Adiantum jordanii Keith E. Hoffmaster 1928-1-26 29 Orange Santa Ana Mtns 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
  RSA0008824  Adiantum jordanii J. T. Howell 1927-6-24 197 Orange Aliso Canyon, Rancho Santa Ana. 274 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
  RSA695487  Ageratum houstonianum Ruth Greenwald, Virginia Pritchard 1938-05 s.n. Orange Santa Ana. Comment
  JEPS32110  Agnorhiza ovata P. C. Everett 1935-6-18 Orange Los Pinos Potrero, main divide motorway Santa Ana Mts. 914 Comment
  RSA17144  Agrostis pallens C. B. Wolf 1936-6-17 7945 Orange Santa Ana Mountains, along Ortega Highway 5.6 miles above San Juan Capistrano. 76 Comment
  UC729937  Agrostis stolonifera Carl B. Wolf 1932-6-13 Orange Malvern and Nicholas Avenues Fullerton 53 Comment
  RSA6042  Agrostis stolonifera C. B. Wolf 1932-7-13 3722 Orange Fullerton. 53 Comment
  CDA1694  Agrostis viridis M. K. Bellue, Johnson 1945-5-8 Orange Right and Hazzard, about 1/2 mile south of Garden Grove. 0 Comment
  UCR192983  Agrostis viridis A. C. Sanders, Fred M. Roberts 2008-6-17 35467 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  POM6476  Allium praecox Philip A. Munz, L. T. Street, Williams 1919-5-3 2635 Orange Santa Ana River Canyon. Comment
  RSA450852  Allium praecox Gordon Marsh 1978-3-17 s.n. Orange U.C. Irvine Ecological Preserve. 85 Comment
  CAS-BOT-BC402181  Allophyllum glutinosum R. F. Thorne; E. W. Lathrop; W. Wisura 1977-7-8 49604 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  RSA410096  Allophyllum glutinosum M. B. Dunkle 1934-6-18 3970 Orange Upper San Juan Canyon. 610 Comment
  RSA562736  Allophyllum glutinosum Steve Boyd, T. S. Ross 1992-5-20 7452 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of wilderness in Lucas Canyon along a new section of trail heading up major side canyon northward to Sitton Peak Road (7S09), 305 Comment
  RSA452789  Alnus rhombifolia Marcus E. Jones 1930-1-26 26226 Orange Wildwood Camp, Santa Ana River. Comment
Read comments
Nov 18 2013
  RSA696427  Alnus rhombifolia Keith E. Hoffmaster 1930-3-9 269 Orange Santa Ana Mts. Comment
  SD127314  Alnus rhombifolia Reid Moran, Jack Reveal and Bob Smart 1975-7-18 22597 Orange Near Yaeger Mine, bottom of upper Trabuco Canyon, Santa Ana Mts. 725 Comment
  UC1543134  Alnus rhombifolia Donald G. Nelson 1938-12-26 Orange in creek bottom near Myers Ranch; Santa Ana Mountains, Black Star Canyon, Black Star Creek 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
  UCR219282  Aloe arborescens Robert DeRuff 2009-1 574 Orange South Coast, Upper Newport Bay, Eastbluff area, lower Big Canyon 23 Comment
  RSA562818  Aloe saponaria Steve Boyd 1992-5-20 7471 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon, about old mining habitations in side canyon, upstream 1/4 mile from Lucas Canyon Trail crossing and north spur trail 1/8 mile. 390 Comment
  SEINET8727106 Image available Alyssum maritimum Jean Coulson 1959-1 s.n. Orange Anaheim 2454 W. Broadway, at N. E. Corner of house. Comment
  UCR197685  Amaranthus A. C. Sanders, Fred M. Roberts 2008-9-18 36063 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  RSA734765  Amaranthus albus A. C. Sanders, T. B. Salvato 2008-5-13 35346 Orange Lomas de 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
  SD136944  Amaranthus blitoides Steve Boyd, Tim Ross 1994-9-14 8345 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Lucas Canyon trail at stream crossing in Aliso Canyon 309 Comment
  UC537281  Amaranthus blitoides L. M. Booth 1932-12-16 1377 Orange Santa Ana River, near coast Santa Ana River Comment
  UCR191461  Amaranthus blitoides A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34655 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 330 Comment
  UCR193848  Amaranthus blitoides A. C. Sanders, Fred M. Roberts 2008-7-16 35880 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 370 Comment
  RSA21100  Amaranthus deflexus E. R. Johnson 1937-11-5 9377 Orange Placentia. Bradford Bros. Packing House. 76 Comment
  CAS-BOT-BC13493  Amblyopappus pusillus P. A. Munz 1934-3-26 13135 Orange Newport Beach 15 Comment
  IRVC22955  Amblyopappus pusillus Karlin G. Marsh 1986-10-18 Orange Santa Ana Canyon, Featherly Park; in sandy wash. Yorba Linda Comment
  POM147625  Amblyopappus pusillus F. M. Reed 1926-5-19 5360 Orange Roadside near Dana Point. Comment
  RSA610217  Amblyopappus pusillus Fred M. Roberts, Julie Vanderwier 1997-4-29 5014 Orange Bolsa Chica Salt Marsh; (US Fish & Wildlife Service cell 60) west of old oil field, 1.1 km. S Chica Survey Mark. 0 Comment
  RSA736129  Ambrosia acanthicarpa T. B. Salvato, Katie Kurtz 2006-10-15 1916 Orange South Coast: Irvine, San Diego Creek flood control channel, near Michelson Drive and Harvard Avenue. Coordinates +/-1000m 6 Comment
  UCR186134  Ambrosia acanthicarpa T. B. Salvato, Katie Kurtz 2006-10-15 1916 Orange South Coast, Irvine, San Diego Creek flood control channel, near Michelson Drive and Harvard Avenue 6 Comment
  UCR261707  Ambrosia acanthicarpa Dick Newell, Don Millar 2014-9-14 384 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Agua Chinon Wash, 0.1 mi. above the 241 Toll Rd./Foothill Transp. Corridor 202 Comment
  RSA416941  Ambrosia chamissonis L. C. Wheeler 1932-6-25 865 Orange Newport Bay. 0 Comment
  SD39993  Ambrosia chamissonis Edith A. Purer 1932-8-31 4879 Orange Open areas of sand dunes along Route 101 Comment
  UCSB10369  Ambrosia chamissonis Haller, Norman 1953-4-25 Orange U.S. 101, 2 miles So. of Huntington Beach Comment
  CAS-BOT-BC45063  Ambrosia psilostachya Ira L. Wiggins 1965-10-18 20272 Orange Vacant lot, NE corner of Chapman Ave. and Victor Dr., Fullerton Comment
  RSA751522  Ambrosia psilostachya A. C. Sanders, Fred M. Roberts 2008-8-7 35990 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  UCR195701  Ambrosia psilostachya A. C. Sanders, Fred M. Roberts 2008-8-7 35990 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
  IRVC8871  Ammi majus Charles W. Sexton 1963-7-15 s.n. Orange Costa Mesa. Southern Coastal Comment
  CAS-BOT-BC177252  Amorpha fruticosa Crawford; Johnston 1917-6-9 1225 Orange Santa Ana River near Corona Comment
  JEPS35488  Amorpha fruticosa John Thomas Howell 1927-6-6 2449 Orange Rancho Santa Ana Santa Ana Canyon, Santa Ana River bottom 152 Comment
  RSA3304  Amorpha fruticosa B. D. Stark 1931-10-17 1332 Orange Rancho Santa Ana, Santa Ana Canyon. 137 Comment
  RSA0090945  Amsinckia eastwoodiae James Snow s.n. Orange Plants of the Bryant Ranch, near Long Beach. Comment
  CHSC10141  Amsinckia intermedia J. W. Johnson 1961-3-16 Orange Newport Beach. On north slope overlooking Upper Newport Bay. Comment
  IRVC29087  Amsinckia intermedia Fred M. Roberts 1989-3-17 4202 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  RSA0089448  Amsinckia intermedia A. C. Sanders, Fred M. Roberts 2008-4-8 34755 Orange Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd. 457 Comment
  RSA499932  Amsinckia intermedia E. A. Purer, Freda Detmers 1932-3-23 15572 Orange near Huntington Beach. Roadside of Coast Highway Comment
  RSA680914  Amsinckia intermedia Scott D. White 2003-3-21 8812 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  RSA722351  Amsinckia intermedia Minor Warne 1934-03 s.n. Orange Laguna Canyon Comment
  UC494723  Amsinckia intermedia Philip A. Munz 1932-3-29 12189 Orange Costa Mesa Comment
  RSA0089444  Amsinckia intermedia P. A. Munz 1934-3-26 13132 Orange Newport Beach. 15 Comment
  UCD119709  Amsinckia intermedia Ira L. Wiggins 1966-3-4 20495 Orange Along Riverside Highway, 4.5 mi. E. of Newport Freeway exit. Comment
  RSA732166  Anagallis arvensis A. C. Sanders, Fred M. Roberts 2008-4-8 34729 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  RSA678725  Andropogon glomeratus Fred M. Roberts, Carol A. Roberts, Robert Allen 2001-8-4 5518 Orange Santa Ana Mountains: San Juan Canyon at confluence with Viejo Cyn., on San Juan Creek below Calif. Rte. 74, 4.0km WnW Sitton Peak., (33 35' 41 N, 117 29' 14 W; T6S,R6W,SE/4 SE/4 Sect. 34) 287 Comment
  RSA542508  Anemopsis californica Fred M. Roberts, K. Keane 1988-5-25 3986 Orange Ranch Mission Viejo: Lower Canada Chiquita, 2.5 kilometers SSE Medium Rancho Survey Mark [see UTM] 882 Comment
  RSA587885  Anemopsis californica Fred M. Roberts 1990-5-8 4614 Orange Chino Hills: Soquel Canyon, ca. 1.2 km NNW of Gilman Peak. 240 Comment
  RSA17218  Antirrhinum coulterianum Carl B. Wolf 1936-6-22 s.n. Orange Santa Ana Mtns, 3 miles above FS gate IN Santiago Canyon, along truck trail to Modjeska Peak. 762 Comment
  RSA681268  Antirrhinum coulterianum Scott D. White, Michael Honer 2003-5-29 9435 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. Steep, gen. south-facing slopes above trib. to Trampas Canyon, ca. 0.6 air mi. S of Ortega hwy and ca. ca. 0.5 mi west of Trampas Cyn. 122 Comment
  POM443834  Antirrhinum coulterianum Karlin G. Marsh 1978-6-6 s.n. Orange Santa Ana Mts: Holy Canyon Comment
  RSA594824  Antirrhinum kelloggii Fred M. Roberts, Sandra Leatherman, Brian Leatherman 1994-4-24 4918 Orange Santa Ana Mountains: San Juan Canyon, south side of CA route 74, 1 kilometers NNW San Juan Survey Mark. 268 Comment
  SBBG6704  Antirrhinum nuttallianum J. M. Tucker 1941-5-30 260 Orange Ortega Hwy (St Hwy 74), 2 to 3 mi E of W boundary of Cleveland Nat Forest Comment
  RSA725584  Antirrhinum nuttallianum subsp. nuttallianum Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6529 Orange dirt road along ridge between Black Star and Fremont Canyons, 4.4km ENE Irvine Lake spillway and 2.4km WSW Hidden Ranch. 662 Comment
  UCSB47616  Antirrhinum nuttallianum subsp. nuttallianum Roberts, Fred 1980-5-3 Orange Santa Ana Mtns; San Juan Canyon; near mouth of Viejo Cyn; below Rte. 74; 2.5km by road ENE San Juan Guard Station; 0.5km WSW Bm 1100 288 Comment
  JEPS83381  Antirrhinum nuttallianum subsp. subsessile David M. Thompson 1983-5-11 303 Orange 0.7 mi w Dana Point, Del Obispo St intersection w/ Golden Lantern St (above roofed picnic area on steep slope below high sea cliff (condominium on top), across road from parking lot this is directly on the water); Dana Point, Dana Point Quad. (7.5', 1968) 7 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
  POM202125  Aphanisma blitoides P. A. Munz 1934-3-26 13131 Orange Newport Beach. 22 Comment
Read comments
Dec 4 2014
  RSA737482  Apiastrum angustifolium Fred M. Roberts 2008-3-12 6734 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA6027  Apocynum cannabinum B. D. Stark 1932-7-15 3876 Orange Ranch Santa Ana River bottom below the ranch houses. 1220 Comment
  RSA0126213  Arabis glabra P. A. Munz, R. D. Harwood 1920-4-25 3721 Orange Santa Ana Mountains, Silverado Canyon. 549 Comment
  UCR273466  Araujia sericifera Eric Focht 2016-7-8 001 Orange South Coast, University of California Research and Extension Center, 7601 Irvine Blvd., Irvine 13 Comment
  UCR129346  Arbutus menziesii C. B. Wolf 1933-11-8 05534 Orange Santa Ana Mtns., Trabuco Canyon on the south wall opposite the Trabuco Truck Trail 915 Comment
  SD255137  Arbutus menziesii R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49826 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  SEINET10874387  Arctostaphylos edmundsii James S. Miller 2001-12-15 Miller 10649 Orange Rancho Santa Ana Botanic Garden, Santa Ana, CA. Comment
  RSA629333  Arctostaphylos glandulosa Jon E. Keeley 1992-6-12 15517 Orange North of El Cariso on road to Los Pinos Pk, 3.8 km north of Hwy 74. 1000 Comment
  UCR145821  Arctostaphylos glandulosa June Latting 1973-1-2 s.n. Orange Santa Ana Mountains, Silverado Canyon, 6.3 miles from Silverado Forest Station [presumably up canyon from Silverado] at 'S' curve in road 1220 Comment
  UCR273480  Arctostaphylos glandulosa A. C. Sanders, Glen Morrison 2016-8-4 42607 Orange Peninsular Range; Santa Ana Mountains, North Main Divide Road (Forest Rte 3S04) between Hwy 74 and Los Pinos Spring, 2.3 km NW (312 deg. ) of El Cariso Fire Station 959 Comment
  UCR281859  Arctostaphylos glandulosa A. C. Sanders, Yi Huang 2017-3-3 42699 Orange Peninsular Range; Santa Ana Mtns., North Main Divide Road, 3.5 km north of Hwy 74 960 Comment
  RSA626921  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15506 Orange Hotshot Camp, north of Ortega Highway (Highway 74). 900 Comment
  RSA629317  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15524 Orange North of El Cariso on road to Los Pinos Pk, 3.8 km north of Hwy 74. 1000 Comment
  RSA629321  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15503 Orange Road to Blue Jay Campground, 1 km south of Hotshot Camp, north of Ortega Hwy. (Hwy. 74). 800 Comment
  RSA80656  Arctostaphylos glandulosa subsp. glandulosa P. A. Munz, E. K. Balls 1952-8-19 17924 Orange summit of Ortega Hwy. 823 Comment
Read comments
Nov 1 2013
  SD247632  Arctostaphylos glandulosa subsp. glandulosa R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49683 Orange Northern Santa Ana Mountains; Coal Canyon [NW of Sierra Peak] 456 Comment
  UC1137197  Arctostaphylos glandulosa subsp. zacaensis Willis E. Pequegnat 1940-6-19 Orange head of West Ladd Canyon Cleveland National Forest, Corona Quadrangle, Santa Ana Mts. 914 Comment
Read comments
Apr 2 2014
  UC284866  Arctostaphylos glandulosa subsp. zacaensis P. A. Munz 1923-5-7 7741 Orange slopes above Santiago Peak 1219 Comment
  RSA748167  Arctostaphylos otayensis K. M. Meyer, A. Townesmith, T. Scott 2007-3-10 6 Orange Cleveland National Forest, 2 mi. N of Main Divide Rd./NF3S04, off Hwy. 74. 957 Comment
Read comments
Dec 19 2014
  RSA0054828  Arenaria douglasii Keith E. Hoffmaster 1936-5-3 723 Orange Santa Ana Mts. (Santiago Peak). Comment
  UCR215293  Argemone munita Fred M. Roberts 2008-5-20 6992 Orange Lomas de Santiago, Santiago Creek wash north of Hangman Tree Road near confluence of Pancho Canyon, 1.6 km NW of Bolero Lookout. Irvine Ranch Conservancy. 349 Comment
  RSA719415  Argyranthemum foeniculaceum Fred M. Roberts, Lee Ann Caranza 2006-10-25 6451 Orange Dana Point Headlands south of Margarite Drive, 0.6km W Marine Institute and 1km SW Cook Sch. 58 Comment
  RSA0013950  Aristida adscensionis Fred M. Roberts 2008-4-24 6929 Orange Lomas de Santiago: Loma Ridge, lower Hicks Cyn. 350 meters east of Haul Rd., 1.9 km E Rattlesnake Cyn. Reservoir dam and 2.1 km W Bee Peak. Irvine Ranch Conservancy. 180 Comment
  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
  RSA38  Aristida adscensionis var. modesta J. T. Howell 1928-2-26 856 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA542562  Aristida purpurea var. parishii Fred M. Roberts 1988-2-18 3796 Orange Lomas de Santiago: lateral to Santiago Wash, 1.4 kilometers NW Santiago Dam spillway., UTM 37 39 400m N, 4 31 700m E. 195 Comment
  RSA550605  Aristida purpurea var. parishii Fred M. Roberts 1989-4-26 4314 Orange Santa Ana Mountains: ridge north of Santiago Canyon, west of Blind Canyon 9.5 kilometers SW Sierra Pead, ca. 1.7 kilometers NW Irvine Lake spillway., UTM Z11 37 39 900m N, 4 31 900mE 247 Comment
  HSC4715  Artemisia californica J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  IRVC479  Artemisia californica C. Thompson 281965 Orange Corona del Mar, Corona Highlands. Newport Beach Comment
  JEPS36942  Artemisia californica L. M. Booth 1932-7-27 1327 Orange Newport Bay Comment
  RSA5382  Artemisia californica B. D. Stark 1932-12-30 s.n. Orange Rancho Santa Ana, 1/4 mile W of Roundtop. 457 Comment
  RSA722100  Artemisia californica R. E. Riefner 2006-8-25 06 -410 Orange City of Dana Point, Salt Creek Beach Park, vicinity of Dana Strand Rd. and Selva Rd. 0 Comment
  UCR131889  Artemisia californica J. Mallory, V. McCoy 1995-7-3 6454- 70 Orange Santa Ana Mountains: N-facing slope in Santiago Canyon, c. 0.5 mi. east of Santiago Canyon Rd; near Irvine Park 200 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
  SEINET3285075 Image available Artemisia douglasiana A. C. Sanders, Fred M. Roberts 2008-9-18 36075 Orange Peninsular Range; Santa Ana Mtns. Foothills; Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge. 320 Comment
  POM201750  Artemisia dracunculus L. M. Booth 1932-7-4 1242 Orange Newport Lagoon. Comment
  POM706  Arthrocnemum subterminale D. L. Crawford s.n. Orange Abalone Pt Comment
  RSA719403  Arundo donax Fred M. Roberts, Robert L. Allen 2006-10-8 6432 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
  UCSB48033  Arundo donax Roberts, Fred 1981-9-26 Orange San Juan Capistrano; along Trabuco Creek on Camino Capistrano Rd; 0.4 km N jct Junipero Serra Rd, 0.5 km SW Bench Mark 202 66 Comment
  UCR130354  Asclepias curassavica A. C. Sanders, Mark A. Elvin 2003-10-12 27323 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  RSA49951  Asclepias eriocarpa E. K. Balls 1949-6-11 13494 Orange heavy clay and stone, steep dry benches, Rancho Santa Ana 2 mi below entrance to Botanic Garden, Santa Ana River Canyon. 122 Comment
  RSA542588  Asclepias eriocarpa Fred M. Roberts, K. Keane 1988-5-25 3998 Orange Rancho Mission Viejo: Lower Canada Chiquita, 1.9km SSE Medium Rancho Survey Mark, UTM 3710800m N, 443500m E 90 Comment
  RSA696499  Asclepias fascicularis Keith E. Hoffmaster 1934-7-15 115 Orange Near Santa Ana Comment
  SEINET179443  Asclepias fascicularis L. M. Booth 1932-7-21 1291 Orange Anaheim Meadows. Comment
  RSA743466  Asparagus aethiopicus Fred M. Roberts, Carol A. Roberts 2008-9-28 7118 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  RSA683219  Asparagus asparagoides Scott D. White, Matt Carlton 2003-11-20 9873 Orange Santa Ana Mountain foothills: San Juan Creek in San Juan Capistrano. 37 Comment
  RSA615567  Asparagus asparagoides B. Pitzer 1996-4-30 2787 Orange Upper Newport Bay: California Department Fish & Game Ecological Reserve, off (W of) Jamboree Road., (33 deg 38.9 N, 117 deg 52.2 W) 6 Comment
  RSA686328  Aspidotis californica Albert J. Perkins 1913-3-6 s.n. Orange San Juan Hot Springs Comment
  RSA739319  Aspidotis californica Keith E. Hoffmaster 1933-3-2 30 Orange Orange County: Santa Ana Mts Comment
  SEINET3153585  Aspidotis californica W. B. Crockatt 1908-6-1 sn Orange Capistrano Valley Comment
  RSA0022438  Aspidotis californica R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49797 Orange Santa Ana Mountains: Trabuco Canyon 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
  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
  RSA443829  Astragalus brauntonii Gordon Marsh, K. G. Marsh 1978-5-20 s.n. Orange Coal Canyon, along Coal Creek. Comment
  UCSB57137  Astragalus brauntonii Marsh, G.; Marsh, K. 1978-5-20 Orange Santa Ana Mts.; Coal Canyon, along Coal Creek Comment
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Aug 6 2013
  RSA699634  Astragalus didymocarpus Keith E. Hoffmaster 1935-3-17 s.n. Orange Near El Toro (Trabuco rd.) Comment
  UCD105450  Astragalus trichopodus var. lonchus J. E. Eckert 1945-6-28 s.n. Orange location unknown. 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
  RSA671247  Atriplex R. E. Riefner 2002-5-4 20 -87 Orange City of Dana Point, beach west of Pacific Coast Hwy. near mouth of Salt Creek. 15 Comment
  UC1980276  Atriplex R. E. Riefner Jr. 2006-2-12 06 -24 Orange North end of City of San Clemente, along I-5 Freeway North, immediately south of Camino de Estrella exit ramp. Comment
  IRVC29877  Atriplex Mark A. Elvin, D. Kelch 2006-12-9 5306 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
  UCR203880  Atriplex amnicola R. E. Riefner Jr. 2005-9-9 05- 659 Orange South Coast, city of Dana Point, beach south of Salt Creek, past Ritz Carlton Hotel on Pacific Coast Hwy 2 Comment
  CDA2882  Atriplex amnicola R. E. Riefner Jr. 2006-4-17 06 -155 Orange Upper Newport Bay, near Bayview Way and Bayview Place. 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
  RSA737473  Atriplex amnicola R. E. Riefner 2006-8-6 6 -381 Orange City of Newport Beach, Newport Bay, Big Canyon Creek drainage near Back Bay Dr. 9 Comment
  RSA737899  Atriplex amnicola R. E. Riefner 2006-4-25 08 -118 Orange City of San Clemente, vicinity of Camino de Los Mares and Calle Nuevo. 45 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
  UCR158035  Atriplex argentea Adrian Wolf 1998-7-1 405 Orange South Coast, Peters Canyon Channel, east of channel near Harvard Ballfield, between Harvard Ave. & creek, south of Warner Ave. to Barranca 15 Comment
  POM48694  Atriplex argentea I. M. Johnson 1924-8-29 s.n. Orange Corona Del Mar Comment
  POM254668  Atriplex californica F. W. Peirson 1924-2-10 4534 Orange Corona Del Mar Comment
  RSA716777  Atriplex californica Fred M. Roberts, Chris M. Barnhill 2004-7-10 6072 Orange Laguna Beach: Crescent Bay, at base of Twin Points. 3 Comment
  RSA737531  Atriplex californica Fred M. Roberts 2008-3-12 6731 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  UCR14056  Atriplex californica Hyrum B. Johnson 1973-10-27 s.n. Orange Pacific Coast, Bolsa Chica State Beach 1 Comment
  RSA703387  Atriplex californica R. E. Riefner Jr. 2004-5-6 4 -170 Orange Newport Beach, north side of Pacific Coast Hwy., west of Bayside Drive near Newport Dunes Beach Club. 10 Comment
  UCSB52924  Atriplex californica Roberts, Jr., Fred 1983-3-10 Orange Dana Point Headlands: south of Dana Strand Rd., south of Dana Strand Beach, 1.0 km. W Dana Point Harbor; 0.9 km. SW Richard Henry Dana School 35 Comment
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Feb 9 2020
  POM47599  Atriplex canescens I. M. Johnston 1924-8-29 s.n. Orange Corona Del Mar Comment
  RSA422250  Atriplex canescens L. M. Booth 1932-7-4 1249 Orange W side of inland arm of Newport Bay. 3 Comment
  RSA452455  Atriplex canescens Albert J. Perkins 1920-6-12 s.n. Orange Corona del Mar Comment
  RSA624453  Atriplex canescens L. C. Wheeler 1933-10-21 2221 Orange Newport Bay. 3 Comment
  UCR221461  Atriplex canescens Dick Newell, Don Millar, Steve Shinn 2010-9-28 38 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Haul Road (Jeffrey Rd.) 1/2 mile east of Hwy 241 toll road 236 Comment
  UCR66987  Atriplex canescens A. C. Sanders 1990-10-6 10193 Orange Newport Bay, North Star County Beach Area on the SW end of the Bay, c. 2 km inland of Hwy 1. 3 Comment
  UCR98213  Atriplex canescens subsp. canescens B. G. Pitzer 1996-4-30 2789 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 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
  SEINET1908425  Atriplex glauca A. C. Sanders 2008-1 35139 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 1000 Comment
  UCR130490  Atriplex glauca R. E. Riefner Jr. 2002-5-4 02- 101 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  IRVC22418  Atriplex glauca Karlin G. Marsh 1985-12-18 Orange along Niguel Rd. at Salt Creek crossing, Laguna Niguel 60 Comment
  RSA737854  Atriplex glauca R. E. Riefner 2006-3-19 06 /01/1952 Orange City of Newport Beach, near Avocado Ave, and San Nicolas Dr. W of McAthur Blvd. 77 Comment
  RSA795710  Atriplex glauca W. R. Ferren 1991-12-2 EPA- 17 Orange San Juan Creek Highway 74 at bridge for San Juan Creek, San Juan Capistrano. Comment
  RSA0028771  Atriplex lentiformis subsp. lentiformis Fred M. Roberts 2009-4-21 7112 Orange Dana Point Headlands: southern cliffs, 0.7 km W Marine Institute at Dana Point Harbor. CNLM Dana Point Preserve. 3 Comment
  CLARK-A1528-2529  Atriplex leucophylla John C. Roos 1937-2-23 1307 Orange Laguna Beach Comment
  POM293187  Atriplex leucophylla Lyman Benson 1946-5-13 12090 Orange Corona del Mar, Pacfic Ocean drainage area 50 Comment
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Dec 2 2008
  RSA33798  Atriplex leucophylla N. C. Cooper 1942-11-9 884 Orange Balboa Comment
  UCR18895  Atriplex leucophylla John C. Roos 1949-10-1 4677 Orange South Coast, Doheny Beach 0 Comment
  CAS-BOT-BC180906  Atriplex pacifica I. M. Johnston 1918-5-4 1931 Orange Laguna Beach Comment
  CAS-BOT-BC180907  Atriplex pacifica John Thomas Howell 1927-7-17 2788 Orange One mile north of Laguna Beach 30 Comment
  POM656  Atriplex pacifica D. L. Crawford 1916-5-5 s.n. Orange Laguna Beach. Comment
  UCR151119  Atriplex polycarpa Scott D. White 1998-10-15 7185 Orange Santa Ana Mtns foothills, Yorba Linda, c. 0.5 mi south of Telegraph Canyon between Ohio St. and Fairmont 305 Comment
  RSA232223  Atriplex prostrata James Henrickson 1970-10-3 s.n. Orange 3 miles NE of Huntington Beach just N of Bolsa Chica Salt Marsh. 0 Comment
  UCD97575  Atriplex rhagodioides D. E. Bramlet 2003-6-17 3466 Orange Upper Newport Bay, Big Canyon. This site is located in Big Canyon, 128 m east of Backbay Drive and 70 m south of the existing maintenance road. 7 Comment
  HSC24271  Atriplex rosea James Henrickson 1970-7-24 5002 Orange 3 mi. NW of Huntington Beach near sandy 'Rabbit' Island in Bolsa Chica Salt Marsh near Inner Bolsa Bay 1 Comment
  RSA297187  Atriplex serenana L. M. Booth 1932-7-1 1248 Orange Newport Bay. Comment
  CAS-BOT-BC176758  Atriplex serenana var. serenana John Thomas Howell 1927-6-30 2616 Orange 7 miles east of Long Beach 15 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
  RSA741479  Atriplex suberecta R. E. Riefner 2008-5-22 8 -114 Orange Near City of Orange, Santiago Creek, vicinity of Hangman s Tree Canyon, Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
  IRVC29713  Atriplex triangularis Mark A. Elvin, Barry S. Nerhus 2006-11-4 5249 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  POM201899  Atriplex watsonii L. M. Booth 1932-5-12 1001 Orange Newport Bay. Comment
  RSA453975  Atriplex watsonii F. R. Fosberg 1931-8-19 7285 Orange Newport Bay. 0 Comment
  SD80969  Atriplex watsonii James Henrickson 1970-7-25 5033 Orange 3I(c) miles northwest of Huntington Beach on margin of Bolsa Bay, Ao mile southeast of Warner Ave., along Pacific Coast Highway. Comment
  RSA184146  Avena barbata I. L. Wiggins 1966-2-18 20450 Orange 0.5 mile west of entrance to Rancho Santa Ana Comment
  HSC9025  Avena fatua J. W. Johnson 1961-3-29 Orange Newport Beach Comment
  UCR207787  Azolla filiculoides O. F. Clarke 2004-8-23 s.n. Orange Santa Ana River Valley, Yorba Linda, Yorba Regional Park, Santa Ana River bank near intersection of E. La Palma Ave. and Fairmont Blvd. 91 Comment
  CHSC26009  Baccharis douglasii James Henrickson 1970-8-22 5292 Orange 2 1/2 miles NNW of Huntington Beach in dry northern part of Bolsa Chica Salt Marsh. 0 Comment
  CHSC39255  Baccharis douglasii M. O. Dillon 1977-4-12 934 Orange Santa Ana Mts., Silverado Canyon. Comment
  RSA151095  Baccharis douglasii Peter H. Raven 1961-10-15 16861 Orange Coast Hwy 2 miles SE of Sunset Beach 0 Comment
  IRVC18079  Baccharis emoryi Gordon A. Marsh 1980-10-24 Orange Irvine: San Joaquin Frreshwater Marsh, south end, earth dam, pond 4. southern coastal Comment
  RSA184186  Baccharis emoryi I. L. Wiggins 1965-11-6 20338 Orange Near well #14, Kramer Oil Estates, near end of county road to Rancho Santa Ana. Comment
  RSA768505  Baccharis emoryi Justin M. Wood 2009-12-1 1389 Orange Santa Ana River: marsh just upstream of Pacific Coast Highway. 0 Comment
  RSA788806  Baccharis emoryi R. F. Thorne 1977-11-21 49981 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp Comment
  JEPS57449  Baccharis glutinosa L. R. Heckard with T. I. Chuang and R. Bacigalupi 1968-7-16 2044 a Orange north of (across U.S. Highway 101 from Huntington State Beach) Newport Beach; Bolsas Marsh Comment
  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
  CAS-BOT-BC99441  Baccharis pilularis Carl B. Wolf 1934-12-26 6262 Orange south end of town of San Clemente 15 Comment
  CAS-BOT-BC99445  Baccharis pilularis B. Pitzer; T. Tennant 1997-11-8 3376 Orange Crystal Cove State Park: Pelican Point Area, grassland area between Pacific Coast Hwy & the bike trail 30 Comment
  CAS-BOT-BC99446  Baccharis pilularis B. Pitzer; T. Tennant 1997-11-8 3374 Orange Crystal Cove State Park: Pelican Point Area, grassland area between Pacific Coast Hwy & the bike trail 30 Comment
  RSA683231  Baccharis pilularis Scott D. White, Matt Carlton 2003-11-20 6860 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (Dana Point) 24 Comment
  RSA699766  Baccharis pilularis Keith E. Hoffmaster 1934-1 s.n. Orange Santa Ana Comment
  RSA793263  Baccharis pilularis R. F. Thorne 1984-1 s.n. Orange Newport Back Bay. Comment
  UCR186681  Baccharis pilularis T. B. Salvato, Katie Kurtz 2006-10-15 1914 Orange South Coast, Irvine, San Diego Creek flood control channel, near Michelson Drive and Harvard Avenue 6 Comment
  SD9148  Baccharis pilularis subsp. consanguinea unknown Dec 1878 Orange Santa Ana Valley Comment
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Oct 29 2013
  RSA5325  Baccharis salicifolia B. D. Stark 1932-12-30 4470 Orange Rancho Santa Ana. River bottom below Mexican houses. 122 Comment
  RSA735541  Baccharis salicifolia A. C. Sanders, Fred M. Roberts 2008-5-6 35231 Orange Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin 216 Comment
  UCR102020  Baccharis salicifolia B. G. Pitzer 1997-3-25 3022 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, along the bike trail 30 Comment
  UCR154338  Baccharis salicifolia Mark A. Elvin 2004-5-2 3414 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  JEPS21857  Baccharis salicifolia subsp. salicifolia Annette Waters 1958-3-30 161 Orange 3.2 mi ne of, on State Highway 91, 18 Atwood Placentara turnoff Comment
  UCD129479  Baccharis salicifolia subsp. salicifolia B. Pitzer 1996-4-30 2769 Orange Upper Newport Bay: California Department Fish and Game Ecological Reserve, off (W of) Jamboree Rd. 6 Comment
  JEPS21280  Baccharis salicina John Thomas Howell 1927-10-22 3166 Orange Rancho Santa Ana Santa Ana River bottom 152 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
  RSA113261  Barbarea orthoceras E. K. Balls 1955-4-4 20427 Orange 2.7 miles SW from Orange Riverside county line, along Hwy 74, San Juan Capistrano to Elsinore. 305 Comment
  SD233267  Barbarea orthoceras R. F. Thorne, E. W. Lathrop, G Marshs. 1977-5-4 49818 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  IRVC25221  Bassia hyssopifolia Fred M. Roberts 1986-11-4 3202 Orange Anaheim Bay, north of Hog Island, Seal Beach Naval Weapons Station 0 Comment
  LA210082  Bassia hyssopifolia Jonathan Sauer; T. McKnight 1971-8-14 4980 Orange West Cove Comment
  RSA232231  Bassia hyssopifolia James Henrickson 1970-7-25 5079 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
  CAS-BOT-BC75514  Batis maritima L. R. Abrams 1917-6-23 6563 Orange Balboa. Comment
  CAS-BOT-BC75515  Batis maritima C. B. Wolf 1934-7-29 6041 Orange Newport Bay. 0 Comment
  CAS-BOT-BC75516  Batis maritima Peter H. Raven 1958-7-5 13559 Orange Just north of Surfside. Comment
  RSA439754  Batis maritima F. R. Fosberg 1931-8-19 S 5678 Orange Newport Bay. 1 Comment
  RSA439758  Batis maritima Anstruther Davidson 1907-9-1 1769 Orange Newport Comment
  RSA69761  Batis maritima F. W. Peirson 1921-1-9 2353 Orange near end of beach, Balboa Comment
  SBBG45055  Bebbia juncea C. B. Wolf 1931-7-25 2295 Orange Santa Ana, Santa Ana Cyn 121 Comment
  UCR37789  Bebbia juncea Steve Boyd, L. 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
  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
  RSA799942  Beta vulgaris Justin M. Wood 2011-6-28 4307 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. Just W of parking area. 25 Comment
  RSA488143  Bidens laevis Fred M. Roberts, Gordon Marsh 1985-10-26 2519 Orange Santa Ana River: adjacent to Huntington Beach: 0.7 km SSW Adams St bridge 4 Comment
  POM201783  Bidens pilosa L. M. Booth 1932-7-19 1276 Orange Bolsas Marsh. Comment
  RSA732246  Bloomeria crocea A. C. Sanders, Fred M. Roberts 2008-4-22 34997 Orange 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 213 Comment
  RSA48920  Bloomeria crocea var. crocea Philip A. Munz 1949-5-26 13394 Orange Head of Sierra [Freemont] Canyon, Santa Ana Mountains 732 Comment
  CAS-BOT-BC145863  Bothriochloa barbinodis John Thomas Howell 1927-6-5 2437 Orange Southern Puente Hills, Santa Ana Canon [Canyon]. 152 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
  UCD56816  Bothriochloa barbinodis P. B. Kennedy 1924-2-5 s.n. Orange Irvine Range. Comment
  UCR151112  Bothriochloa barbinodis Scott D. White, Pam DeVries 1998-12-10 7203 Orange Santa Ana Mtns foothills, Brea: Tonner Canyon and adjacent slope, just east of Hwy 57 crossing 198 Comment
  UCR205990  Bothriochloa barbinodis Adrian Wolf 1997-5-20 009 Orange South Coast, northwest of city of Laguna Beach, 100 ft from Pine Crest Drive reservoir, upslope bank adjacent to the road 152 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
  CAS-BOT-BC145854  Bothriochloa laguroides subsp. torreyana John Thomas Howell 1927-6-5 2437 Orange Santa Ana Canyon. 152 Comment
  CAS-BOT-BC95405  Bowlesia incana John Thomas Howell 1928-2-26 s.n. Orange Hills on N side of Santa Ana Canyon 152 Comment
  JEPS16061  Bowlesia incana Alice King Apr., 1908 Orange near Anaheim (Santa Ana River); Santa Ana River Comment
  CAS-BOT-BC420395  Boykinia rotundifolia R. J. Smith 1903-6-1 79 Orange Mill Creek and Santa Ana River 914 Comment
  RSA716781  Boykinia rotundifolia Fred M. Roberts, Michelle Balk, Robert Allen, Chris Barnhill 2004-6-19 6061 Orange Santa Ana Mtns.: Holy Jim Cyn.: Holy Jim Falls along Holy Jim Trail, 3.0km SE summit of Santiago Peak. 658 Comment
  RSA542371  Brachypodium distachyon Fred M. Roberts, Karlin G. Marsh 1988-4-25 3933 Orange San Joaquin Hills: East flank Pelican Hill, 0.9 kilometer SE summit. 120 Comment
  UCR158030  Brachypodium distachyon Adrian Wolf 1998-5-15 286 Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 Comment
  UCR239225  Brachypodium distachyon Fred M. Roberts 2012-4-24 7509 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
  UCR177426  Brassica kaber Scott D. White, Amanda Duchardt 2003-3-27 8849 Orange Peninsular Ranges/Santa Ana Mtns, Canyon bottom and W-facing slopes above Canada Gobernadora 183 Comment
  CLARK-A1528-982  Brassica nigra Patricia A. Andrews 1975-6-26 5915 Orange Capistrano Bay Beach 9 Comment
  IRVC1050  Brassica nigra L. McCabe 1965-4-21 Orange Corona del Mar. Newport Beach Comment
  UCR191783  Brassica nigra A. C. Sanders, Fred M. Roberts 2008-3-25 34567 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
  UCR231158  Brassica nigra Dick Newell, Don Millar, Shara Harris 2011-6-21 189 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash 225 Comment
  UCR241907  Brassica nigra Fred M. Roberts 2012-4-24 7526 Orange Peninsular Ranges; Coastal Foothills, San Joaquin Hills, Buck Gully, tributary canyon below San Joaquin Hills Road and 2.0 km W Signal Peak 167 Comment
  CAS-BOT-BC36768  Brassica rapa Ira L. Wiggins 1965-12-5 20365 Orange 2 miles east of Atwood on north side of Orangethorpe Avenue. Comment
  UCR102002  Brassica rapa B. G. Pitzer 1997-3-25 3036 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  CAS-BOT-BC36769  Brassica rapa Ira L. Wiggins 1966-2-12 20427 Orange North side of La Palma Avenue near Harbor Boulevard, Anaheim. 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
  SEINET7907478  Brassicaceae G. A. Wojciechowski 1967-1 Orange San Juan Capistrano beside rd 610 Comment
  RSA792  Brickellia californica J. T. Howell 1927-11-5 801 Orange Racnho Santa Ana, W side. Comment
  UCR197680  Brickellia californica A. C. Sanders, Fred M. Roberts 2008-9-18 36067 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  UCR234137  Brickellia californica Dick Newell, Peter Wetzel 2011-8-30 218 Orange Peninsular Range; Santa Ana Mtns., Black Star Canyon Rd. and Edison Rd. 502 Comment
  UCR132993  Briza minor Adrian Wolf 2001-7-16 456 Orange Santa Ana Mtns., North Ranch Policy Plan Area, North Baker Canyon Road 305 Comment
  UCR251740  Brodiaea filifolia R. E. Riefner Jr. 2014-5-13 14- 119 Orange South Coast, City of San Clemente, Rancho San Clemente Trail, east c. 0.15 mi. from Ave. Salvador and south c. 0.1 mi. off Utility Access Rd. 239 Comment
  UC204884  Bromus carinatus var. carinatus R. L. Pendleton, F. M. Reed 1907-7-25 1195 Orange near Modjeska Falls (Lake Tahoe Region); Lake Tahoe Region Comment
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Sep 11 2013
  CAS-BOT-BC156205  Bromus catharticus John Thomas Howell 1956-3-11 30922 Orange Yorba Linda. Comment
  RSA725588  Bromus catharticus Fred M. Roberts 2007-8-6 6560 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
  LA35610  Bromus diandrus A. K. Khudairi; 1951-5-20 sn Orange Westminster Comment
  RSA737538  Bromus diandrus Fred M. Roberts 2008-3-12 6724 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  UCSB48111  Bromus diandrus Roberts, Fred 1981-4-12 Orange Santa Ana Mtns; San Juan Canyon, Hwy 74, 1.3 km by road E of San Juan Guard Stn; 0.9 km SE Juan Rancho Survey Mark 295 Comment
  RSA590949  Bromus diandrus Fred M. Roberts 1991-5-2 4776 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
  RSA697685  Bromus hordeaceus Anonymous s.n. Orange Dry hills. Orange Co. Park. Comment
  RSA747698  Bromus hordeaceus Fred M. Roberts 2008-4-16 6914 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8 km W Marine Institute, Dana Point Harbor. 60 Comment
  UCD58824  Bromus hordeaceus B. Pitzer 1996-4-30 2760 Orange Upper Newport Bay: Calif. Dept. Fish and Game Ecological Reserve, off (W of) Jamboree Rd. 6 Comment
  UCR190962  Bromus hordeaceus A. C. Sanders, Fred M. Roberts 2008-4-22 35041 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, valley at south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado, above spring shown on topo map 457 Comment
  UCR98244  Bromus hordeaceus Scott D. White 1997-3-28 4845 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  UCR192067  Bromus madritensis A. C. Sanders, Fred M. Roberts 2008-5-6 35251 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
  UC971750  Bromus madritensis subsp. rubens L. M. Booth 1932-5-12 1043 Orange Newport Bay Comment
  CAS-BOT-BC162108  Bromus porteri John Thomas Howell 1927-6-17 2549 Orange Hills on north side of Santa Ana Canon [Canyon]. 152 Comment
  CAS-BOT-BC161820  Bromus rubens Ira L. Wiggins 1966-3-4 20494 Orange Along shoulder of Peralta Avenue, near junction of Newport Freeway and Riverside Highway. Comment
  CAS-BOT-BC161823  Bromus rubens John Thomas Howell 1927-6-9 2465 Orange North side Santa Ana Canon [Canyon]. 152 Comment
  RSA696330  Bromus rubens Keith E. Hoffmaster 1928-4-25 s.n. Orange Santa Ana Comment
  SEINET11675601  Bromus rubens Unknown 1933-1 8216 Orange LaGuna Beach Comment
  RSA734639  Bromus sterilis A. C. Sanders, Fred M. Roberts, Amber O'Neal, David E. Bramlet 2008-5-9 35306 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, along old dirt road c. 1.25 mi. ESE of Walnut Cyn Reservoir. 340 Comment
  RSA751157  Bromus sterilis D. E. Bramlet 2008-4-28 4248 Orange East Fork of Upper Weir Cyn, 1.2km east of the main Cyn. & 91m W of the upper boundary of Gypsum Cyn. 409 Comment
  RSA696618  Bromus unioloides Keith E. Hoffmaster 1934-04 79 Orange Santa Ana. Comment
  POM122271  Cakile edentula subsp. edentula Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA484558  Cakile edentula subsp. edentula Anstruther Davidson 1789 Orange Newport Beach; Santa Anna [Ana]. Comment
  CSUSB525  Cakile maritima C. M. Flanagan 1971-5-18 S. N. Orange Cresent Bay, Laguna Beach Comment
  RSA649676  Calamagrostis koelerioides R. E. Riefner 2000-6-26 20 -579 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and W of Black Star Canyon Road at powerline tower. 631 Comment
  CAS-BOT-BC354307  Calandrinia breweri R. E. Riefner, Jr. 2008-3-5 08 -31 Orange Irvine Ranch Reserve, North Irvine Ranch, S of Windy Ridge Rd., ca 0.5 mi from West Fork of upper Fremont Canyon 508 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
  UCR191231  Calandrinia ciliata A. C. Sanders, Fred M. Roberts 2008-4-22 35043 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, valley at south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado, above spring shown on topo map 457 Comment
  UCR192454  Calandrinia ciliata A. C. Sanders, Fred M. Roberts 2008-3-25 34576 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
  UCR192501  Calandrinia ciliata A. C. Sanders, Fred M. Roberts 2008-3-25 34548 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR217453  Calandrinia ciliata Mark A. Elvin 2003-1-26 2231 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-BC438320  Calandrinia ciliata Ira L. Wiggins 1966-3-5 20508 Orange Along Highway S-18, about 4.5 mi. E. of Laguna Beach. Comment
  RSA594817  Calochortus albus Fred M. Roberts, Sandy Leatherman, Brian Leatherman 1994-4-24 4911 Orange Santa Ana Mountains: San Juan Canyon, CA route 74, Lower San Juan Picnic Ground. 354 Comment
  CAS-BOT-BC132257  Calochortus catalinae Philip A. Munz 1949-5-26 13379 Orange Head of Sierra Canyon, Santa Ana Mts. 731 Comment
  RSA120  Calochortus catalinae J. T. Howell 1928-3-17 863 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA162808  Calochortus catalinae J. D. Olmsted 1959-4-23 475 Orange Hidden Ranch in Black Star Canyon, 5 miles east of Irvine Reservoir. 640 Comment
  RSA21235  Calochortus catalinae S. B. Bryant 1937-4-10 8506 Orange Rancho Santa Ana, Santa Ana Canyon, along road & roundtop to Horseshoe Bend. 244 Comment
  RSA48924  Calochortus catalinae Philip A. Munz 1949-5-26 13379 Orange Head of Sierra [Freemont] Canyon, Santa Ana Mountains. 732 Comment
  RSA539345  Calochortus catalinae Fred M. Roberts 1988-2-9 3781 Orange Lomas de Santiago: Loma Ridge, 1.5 km N Bee Survey Mark. 381 Comment
  RSA734347  Calochortus catalinae A. C. Sanders, Linda Farley, Fred M. Roberts, David E. Bramlet 2008-4-1 34639 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 396 Comment
  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
  UCR31355  Calochortus catalinae L. F. LaPre 1983-4-12 s.n. Orange Peralta Hills c. 0.5 mi south of Anaheim Hills residential development. Comment
  RSA0108729  Calochortus catalinae J. T. Howell 1928-3-17 863 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  POM1697  Calochortus invenustus Le Roy Abrams 1901-6-15 1848 Orange Santiago Peak trail. Comment
  CSUSB398  Calochortus splendens Richard G. Sullivan 1972-4-22 720422 7 Orange Laguna Hills Laguna Hills Comment
  RSA747589  Calochortus splendens Fred M. Roberts 2000-5-4 5317 Orange Lomas de Santiago: Loma Ridge, Hicks Cyn., west of SR 241, 1.9 km E Rattlesnake Reservoir dam and 2.1 km WSW Bee Peak. 210 Comment
  UCR13395  Calochortus splendens William A. Hunt 1972-4-9 720409- 01 Orange South Coast, San Clemente, San Clemente Beach State Park, day use area, bluffs directly overlooking Pacific Ocean 15 Comment
  RSA0050043  Calochortus splendens Wendy Boes 2010-9-8 2009 -011 Orange Peninsular Ranges; Santa Ana Mountains; El Cariso 953 Comment
  CAS-BOT-BC132657  Calochortus weedii var. intermedius D. Bramlet 1994-6-23 2392 Orange San Joaquin Hills. On ridgeline between Camarillo and Shady Canyons. The site is located 1.5 km west of Laguna Cyn. and 183 m SE of the Shady-Camarillo Cyn. Road junction 244 Comment
  RSA131397  Calochortus weedii var. intermedius E. K. Balls 1958-6-27 23278 Orange Silverado Canyon, Santa Ana Mountains, 2.8 miles E from Silverado Station. 732 Comment
  RSA699753  Calochortus weedii var. intermedius Fred M. Roberts, David E. Bramlet 2003-6-6 5884 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.7km SW int. Cristianitos and TRW Rds. and 0.23km W of SDG&E substation. 119 Comment
  RSA725577  Calochortus weedii var. intermedius Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6537 Orange Upper Fremont Canyon, 5.2km ENE Irvine Lake Spillway and 2.0km WNW Hidden Ranch. 673 Comment
  RSA741725  Calochortus weedii var. intermedius R. E. Riefner 2008-6-3 8 -138 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 622 Comment
  RSA749645  Calochortus weedii var. intermedius D. E. Bramlet 2008-6-5 4290 Orange Santa Ana Mtns foothills: Tributary to Weir Cyn., 731 m N of the SCE Transmission Line & 229m west of Weir Canyon Road. 257 Comment
  UCR132986  Calochortus weedii var. intermedius Adrian Wolf 2000-6-22 470 Orange Santa Ana Mtns., North Ranch Policy Plan Area, East access road, Black Star Canyon 610 Comment
  RSA741483  Calochortus weedii var. weedii R. E. Riefner 2008-6-5 8 -145 Orange Near City of Orange, W side of Hicks Haul Rd., Rattlesnake Cyn., SW of the asphalt plant, Irvine Ranch Reserve, Management Area 6. Comment
  RSA602115  Calycadenia tenella Scott D. White 1997-5-6 5042 Orange Santa Ana Mountains. Santiago Canyon area: Ridgetop road N and W of Bolero Lookout. 427 Comment
  RSA606369  Calycadenia tenella Jon E. Keeley 1994-6-1 25365 Orange First year burn, Starr Ranch 390 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
  RSA794329  Calystegia macrostegia subsp. arida Justin M. Wood 2010-3-31 1446 Orange Santa Ana River floodplain, 0.25 miles north of Coal Canyon wildlife corrridor, west of Green River Golf Course on bluff south of the river. 122 Comment
  CAS-BOT-BC221302  Calystegia macrostegia subsp. intermedia John Thomas Howell 1927-6-9 2462 Orange Southern Puente Hills, in the Santa Ana Canon [Canyon] 152 Comment
  IRVC981  Calystegia macrostegia subsp. intermedia J. Schram 1965-3-23 Orange Corona del Mar, Corona Highlands. Newport Beach Comment
  RSA653182  Calystegia macrostegia subsp. intermedia David Barrios 1991-5-1 15 Orange Yorba Linda, 1500 ft. northwest of Fairmont Ave and Quail Circle., (117 deg. 45' 00'' +4 28 / 33 deg. 52' 37'' + 37 51.5). 366 Comment
  RSA697156  Calystegia occidentalis subsp. occidentalis Kenneth Beard s.n. Orange Between Irvine & S.J. Capistrano. Comment
  JEPS47827  Calystegia sepium subsp. binghamiae L. M. Booth 1932-8-5 1359 Orange Huntington Beach Comment
  RSA113268  Calystegia soldanella E. K. Balls 1955-4-4 20420 Orange Coastal Strand, mouth of Santa Ana River, W bank, Hwy 101. 3 Comment
  RSA0039800  Camissonia bistorta Fred M. Roberts, D. E. Bramlet 2003-4-10 5647 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, ridge between Cristianitos Cyn. and Segunda Deshecha Canada, 1.54km W Gato Gate and 1.59km NW Edison substation. 262 Comment
  RSA165280  Camissonia bistorta Mark Parratt 1962-4-11 138 Orange Corona del Mar beach head. 5 Comment
  UCR191473  Camissonia bistorta A. C. Sanders, Fred M. Roberts 2008-4-8 34740 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  CSUSB191  Camissonia cheiranthifolia subsp. suffruticosa Steve Kulju 1974-5-27 Orange Seal Beach; One mile southeast of the city of Seal Beach on State Highway 1. 4 Comment
  RSA539380  Camissonia hirtella Fred M. Roberts, Carol A. Roberts 1988-6-2 4044 Orange Santa Ana Mtns.: Maple Springs Truck Trail, 8.7 km above Silverado Gate, 2.4 km N Modjeska Pk. 352 Comment
  UCR191366  Camissonia hirtella A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34624 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
  RSA75439  Camissonia ignota F. W. Peirson 1923-5-6 3505 Orange Trail to Santiago Peak, Santa Ana Ms., from Trabuco Canyon. 1067 Comment
  RSA508  Camissonia lewisii J. T. Howell 1928-4-7 896 Orange Bee Canyon, Rancho Santa Ana 152 Comment
  UCR281558  Camissoniopsis bistorta Mitch Provance, Jeremiah George 2017-3-20 317- 113 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
  SBBG40397  Camissoniopsis bistorta J. Ingram 1960-3-14 244 Orange La Palma Ave, ca. 2 blocks E of Knotts Berry Farm, Buena Park Comment
  SDSU8589  Camissoniopsis cheiranthifolia subsp. suffruticosa R. M Beauchamp 1968-2-17 768 Orange Beside rod in NW side of Dana Point. Comment
  CAS-BOT-BC37128  Capsella bursa-pastoris Ira L. Wiggins 1966-3-5 20499 Orange Along Highway S-18, about 4.5 miles east of Laguna Beach. Comment
  CAS-BOT-BC37129  Capsella bursa-pastoris Ira L. Wiggins 1966-3-22 20543 Orange Near bottom of Silverado Canyon, near end of road about 5 miles above Ranger Station, Cleveland National Forest. Comment
  CAS-BOT-BC384760  Cardionema ramosissimum H. F. Copeland 1938-6-28 s.n. Orange Hills back of Laguna Beach Comment
  RSA752304  Cardionema ramosissimum Fred M. Roberts, Eliza Maher 2008-3-26 6794 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  UCR5159  Cardionema ramosissimum Barbara T. Gittins, O. F. Clarke 1966-3-19 902 Orange Pacific slope, Irvine Ranch, east of University of California Irvine campus, Newport Beach 91 Comment
  CAS-BOT-BC281701  Carduus pycnocephalus Scott D. White; Brian Leatherman 1997-6-12 5330 Orange Santa Ana Mountain foothills. E 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 jtn 75 Comment
  SBBG52701  Carex globosa C. Davidson 1977-5-18 5621 Orange Bear Springs, Santa Ana Mtns 1219 Comment
  CAS-BOT-BC118503  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Santa Ana Comment
  CAS-BOT-BC118504  Carex praegracilis Helen D. Geis 1902-4-1 503 Orange Santa Ana Comment
  POM202036  Carex praegracilis L. M. Booth 1932-7-1 1234 Orange Anaheim Marsh Comment
  RSA751160  Carex triquetra D. E. Bramlet 2008-5-15 4272 Orange Upper Borrego Cyn. 152m east of the access road & 1.7km west of Santiago Cyn Road 450 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
Read comments
Dec 13 2020
  POM771  Carpobrotus chilensis D. L. Crawford 1916-8-1 s.n. Orange Aliso Point Comment
  CAS-BOT-BC281886  Carthamus lanatus E. L. Paddock 1941-7-21 s.n. Orange Ridge Road along S rim Tonner Canyon, 1 mile NE of Brea on Union Oil Property, Brea Comment
  POM223456  Carthamus tinctorius Albert J. Perkins 1936-6-4 s.n. Orange Santa Ana Comment
  RSA683065  Castilleja affinis Fred M. Roberts 2003-3-19 5608 Orange Donna O'Neill Land Conservancy: Ridges west of Cristianitos Cyn., 1,750m NNW Sycamore gate and 315m W Cristianitos Rd. (Canada Gobernadora) 192 Comment
  RSA773519  Castilleja affinis Fred M. Roberts 1999-5-3 5210 Orange Lomas de Santiago: Loma Ridge, Central Limestone Canyon, west slope, 2.3 km NW Bolero Lookout and 0.5 km NE Bolero Spring 446 Comment
  UCR140803  Castilleja affinis Robin G. Marushia 2004-4-16 022 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
  RSA638965  Castilleja affinis subsp. affinis Valerie L. Soza, LeRoy Gross 1999-6-7 480 Orange West side of Modjeska Peak, along Main Divide Road. 1448 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
  UCR256945  Castilleja exserta subsp. exserta Naomi Fraga 2009-5-11 2717 Orange Santa Ana Mountains, Cleveland National Forest, San Juan Loop Trail just west of Sugarloaf Spur Trail 912 Comment
  RSA699995  Castilleja foliolosa R. H. McArthur 1934-4-7 s.n. Orange Ladd Canyon. Comment
  UCR52606  Castilleja foliolosa Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, Santa Ana Mountains 275 Comment
  POM202724  Castilleja minor subsp. spiralis L. M. Booth 1932-6-28 1217 Orange Bolsas Marsh. Comment
  RSA702801  Caulanthus heterophyllus D. E. Bramlet, Fred M. Roberts 2003-5-1 3429 Orange Donna O Neill Reserve. The site is 412m N of Gato Cyn. and 107m W of Cristianitos Rd. 134 Comment
  UCD114584  Caulanthus lasiophyllus D. E. Bramlet 2008-3-31 4133 Orange Santa Ana Mountains. 305 m E of Upper Hicks Haul Road, in Trib to Limestone Cyn., 1 km S of Santiago Cyn. Road. 311 Comment
  RSA703699  Ceanothus crassifolius var. crassifolius Fred M. Roberts, Arthur Davenport 2004-2-20 6026 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
  RSA542418  Ceanothus integerrimus Fred M. Roberts, Karlin G. Marsh 1987-5-14 3440 Orange Santa Ana Moutains: Upper Trabuco Canyon, Trabuco Canyon Trail , 1.3 km NE Los Pinos Peak 1231 Comment
  RSA733958  Ceanothus integerrimus Keith E. Hoffmaster 1936-5-3 716 Orange Santa Ana Mts (Santiago Peak) Comment
  SD255266  Ceanothus integerrimus Robert F. Thorne, E. W. Lathrop 1977-5-18 49742 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  RSA25842  Ceanothus integerrimus var. californicus Carl B. Wolf 1941-8-15 11153 Orange w. slope Santiago Truck Trail, 1.6 mi. below mian divide motorway. 1220 Comment
  RSA3025  Ceanothus leucodermis E. R. Johnson 1931-12-31 2641 Orange Racho Santa Ana, river bottom south of Ranch houses, ear the boudary benre. Comment
  RSA30303  Ceanothus leucodermis Carl B. Wolf 1941-8-15 11254 Orange W. slope of Santiago Truck Trail. 4.4 mi. below mai divide motorway. 1067 Comment
Read comments
Sep 20 2013
  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
  RSA708282  Ceanothus megacarpus Scott D. White, Jennifer H. Jones 2005-3-31 10855 Orange South Coast: City of Laguna Beach. 549 Nyes Place. Proposed home site on ca. 0.5 acre. 91 Comment
  RSA0058061  Ceanothus megacarpus Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49675 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 457 Comment
  RSA95392  Ceanothus megacarpus F. W. Peirson 1923-3-23 4192 Orange Hills back from beach, Aliso Creek, near Laguna Beach. 122 Comment
  UCSB22737  Ceanothus megacarpus var. megacarpus Van Rensselaer, Maunsell 1941-7-12 Orange about 3 miles South of Laguna Beach Comment
  UCR139198  Ceanothus oliganthus var. orcuttii Percy C. Everett 1935-6-19 7234 Orange Santa Ana Mtns., Main Divide Motorway, junction with Trabuco Canyon Truck Trail 1220 Comment
  CLARK-A1528-3898  Ceanothus papillosus subsp. roweanus John C. Roos 1962-5-5 Orange Santa Ana Mountains Comment
  IRVC28204  Ceanothus papillosus subsp. roweanus A. C. Sanders, Mark A. Elvin 2005-9-2 31610 Orange Upper Holy Jim Canyon, a major tributary of Trabuco Cyn, along trail in the switchbacks. Santa Ana Mountains 970 Comment
  RSA790451  Ceanothus papillosus var. roweanus Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49697 Orange Northern Santa Ana Mountains: Sierra Peak Comment
  CHSC116480  Ceanothus papillosus var. roweanus R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49697 Orange Northern Santa Ana Mountains: Sierra Peak. Hydrothermally altered serpentine substrate with limited scrub growth. Comment
  RSA25589  Ceanothus spinosus Carl B. Wolf 1941-6-27 10896 Orange San Juan Canyon, Ortega hiway, 1.5 mi. W. of Riverside co. line. 274 Comment
  CAS-BOT-BC63297  Ceanothus tomentosus var. olivaceus Carl B. Wolf 1932-3-8 2693 Orange W. base of Santa Ana Mts., Santiago Creek, 1 mi. e. of Villa Park. 152 Comment
  RSA731001  Cedrus deodara Fred M. Roberts, B. Allen, D. Olsen 2007-1-19 6504 Orange Beek s Place along Main Divide Rd., 4.1 km NW Pleasant Peak. 852 Comment
  UCR130351  Celtis sinensis A. C. Sanders, Mark A. Elvin 2003-10-12 27326 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  UC1495811  Cenchrus ciliaris Jan West 1983-10-8 Orange Freeway right of way along the Newport Freeway (#55) at its intersection with Chapman Ave. Orange (city of Orange) Comment
  CDA7246  Centaurea diluta G. Jackson 1973-12-11 Orange Villa Park Dam basin, Orange Park Acres. 0 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
  UC536893  Centaurea melitensis Lawrence M. Booth 1932-5-26 1117 Orange Newport Bay Comment
  UCR140799  Centaurea melitensis Robin G. Marushia 2004-5-4 013 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
  UCR239619  Centaurea melitensis Fred M. Roberts 2012-4-24 7518 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
  RSA0065467  Centaurea melitensis J. Bruce Smiley 1940-5-4 s.n. Orange Santa Ana Wash. 457 Comment
  UCR230835  Centaurium venustum Dick Newell, Don Millar 2011-6-14 175 Orange South Coast, San Joaquin Hills, upper Buck Gully near Newport Beach 134 Comment
  CAS-BOT-BC288841  Centromadia parryi subsp. australis Peter H. Raven 1957-9-28 11376 Orange N limits of Surfside Comment
  CAS-BOT-BC288848  Centromadia parryi subsp. australis H. M. Hall 1920-10-4 11222 Orange Cypress Comment
  SBBG36843  Centromadia parryi subsp. australis D. D. Keck 1933-9-29 2537 Orange Seal Beach; ISOTYPE Comment
  JEPS3954  Cephalaria syriaca M. Alice King 1908-4-15 Orange Santa Ana, Walnut Grove Walnut Grove; Santa Ana, Walnut Grove Comment
  RSA687522  Cerastium glomeratum Fred M. Roberts 2003-3-27 5630 Orange Rancho Mission Viejo:Donna O Neill Land Conservancy, Chistianitos Canyon, along North Ride Trail, 1.37 km N Sycamore Gate, 0.36 km W Chistianitos Rd. 114 Comment
  UCR174498  Cercocarpus A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33061 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  RSA172271  Cercocarpus betuloides Robert F. Thorne 1963-7-26 32844 Orange Tin Mine Canyon above Beek's Spring, Trabuco District, Cleveland National Forest 854 Comment
  RSA739229  Cercocarpus betuloides Keith E. Hoffmaster 1932-4-17 502 Orange Santa Ana Mts. [Orange/Riverside Cos] Comment
  LA31220  Cercocarpus minutiflorus Dave Verity; 1960-2-14 sn Orange near summit of Temple Hills Drive on e slope of ridge, San Juaquin Hills behind Laguna Beach Comment
  RSA539366  Cercocarpus minutiflorus Fred M. Roberts 1989-2-21 4182 Orange Aliso-Woods Canyon Regional Park: Niguel Hill, 1.6 km ENE Aliso Peak. 268 Comment
  UCSB34846  Cercocarpus traskiae Muller, Cornelius 1953-5-2 Orange Upper end of Swain Canyon, near ridge top, Santa Catalina Island Comment
  UCR66994  Cestrum nocturnum A. C. Sanders 1990-10-6 10187 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-BC279503  Chaenactis artemisiifolia P. A. Munz 1923-6-14 7057 Orange Santa Ana Mts., Glen Ivy Trail to Santiago Peak 1066 Comment
  IRVC23289  Chaenactis artemisiifolia Fred M. Roberts, K. G. Marsh 1985-7-18 2053 Orange Temple Hill, Goff Ridge, 0.9km NE Goff Island off Nye Place Laguna Beach 168 Comment
  UCR157714  Chaenactis glabriuscula Adrian Wolf 1998-5-15 294 B Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 Comment
  RSA542427  Chaenactis glabriuscula var. glabriuscula Fred M. Roberts 1988-4-11 3901 Orange Lomas De Santiago; Loma Ridge, Upper Limestone Canyon, c.a. 3.2 km NNW Bolero Lookout Comment
  IRVC598  Chaenactis glabriuscula var. glabriuscula M. Savage 1965-3-21 Orange Irvine Terrace. Newport Beach Comment
  RSA113264  Chaenactis glabriuscula var. megacephala E. K. Balls 1955-4-4 20424 Orange N of Dana Poit off Hwy 101. 46 Comment
  RSA184133  Chamaesyce albomarginata I. L. Wiggins 1965-11-6 20342 Orange Near well #14, Kramer Oil Estates, near end of county road to Rancho Santa Ana. Comment
  RSA702691  Chamaesyce polycarpa Scott D. White, Michael Honer 2004-5-17 10394 Orange South Coast: City of Laguna Niguel. Ridges and open slopes directly north of the intersection of Crown Valley Parkway and Pacific Island Dr. 61 Comment
  RSA436  Chamaesyce polycarpa var. polycarpa J. T. Howell 1927-6-9 71 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  CDA1080  Chamaesyce serpillifolia subsp. hirtula D. G. Kelch 2006-12-9 6 .563 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  UCR207554  Chenopodium O. F. Clarke 2004-11-23 s.n. Orange South Coast, Newport Back Bay 3 Comment
  UCR179762  Chenopodium album R. E. Riefner Jr. 2006-10-8 06- 484 Orange South Coast, Irvine, San Diego Creek near 405 Freeway, between 405 and Laguna Road 51 Comment
  POM225561  Chenopodium album P. A. Munz 1936-6-30 14175 Orange 5 miles south of Garden Grove. Comment
  IRVC21772  Chenopodium ambrosioides Fred M. Roberts 1984-11-27 1440 Orange Novia St. bridge over San Juan Creek, 0.6km S Bench Mark 133, San Juan Capistrano 31 Comment
  RSA798190  Chenopodium ambrosioides R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49589 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  UC582775  Chenopodium ambrosioides P. A. Munz 1936-6-30 14172 Orange 5 mi s Garden Grove Comment
  POM122883  Chenopodium ambrosioides Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  UCR281518  Chenopodium berlandieri Mitch Provance 2017-6-9 617- 95 Orange Coyote Hills, North Fullerton, East side of Gilbert St., 0.5 miles ENE of intersection with Castlewood Dr. 124 Comment
  POM201965  Chenopodium berlandieri var. sinuatum L. M. Booth 1932-6-29 1228 Orange Newport Bay. Comment
  RSA732153  Chenopodium californicum A. C. Sanders, Fred M. Roberts 2008-4-22 35022 Orange Santa Ana Mtns.: Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 1200 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
  UC1971225  Chenopodium californicum Scott D. White, Noel Davis 1998-5-21 6546 Orange MISSION VIEJO AREA: Aliso Creek watershed, east of El Toro Rd. just N of junction. w/ Valley Vista Wy. Large proposed subdivision called Saddleback Meadow. USGS 7.5' Santiago Peak quad. Comment
  UCR237847  Chenopodium glaucum Mark A. Elvin 2003-2-2 2276 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  RSA64797  Chenopodium macrospermum var. farinosum F. W. Peirson 1919-11-8 1826 Orange Aliso Creek. 0 Comment
  RSA696277  Chenopodium multifidum Keith E. Hoffmaster 1932-8-26 s.n. Orange Santa Ana. Comment
  SD218311  Chenopodium murale Mark A. Elvin 2004-5-2 3403 Orange San Joaquin Freshwater Marsh near Campus and University Drs., 1.7 km (air) NNW UC Irvine campus center. 3 Comment
  RSA696281  Chenopodium murale Keith E. Hoffmaster 1927-02 s.n. Orange Santa Ana. Comment
  UCR64876  Chenopodium pumilio Tim Hartz 1990-11-19 s.n. Orange Irvine U.C. South Coast Field Station, near the U.C. Irvine Campus. Comment
  POM225242  Chenopodium strictum var. glaucophyllum P. A. Munz 1936-6-30 14174 Orange 5 miles south of Garden Grove. Comment
  UCSB38063  Chorizanthe fimbriata var. fimbriata Roos, John 1965-6-16 Orange Dana Point near Doheney Beach. Comment
  CAS-BOT-BC257200  Chorizanthe procumbens Alice Eastwood; John Thomas Howell 1937-4-24 3938 Orange Between Dana Point and Laguna Beach Comment
  CAS-BOT-BC255246  Chorizanthe staticoides Herbert L. Mason 1926-4-25 2913 Orange 5 miles below Laguna Comment
  CAS-BOT-BC255247  Chorizanthe staticoides Frank W. Peirson 1924-5-31 4644 Orange Laguna, near sea level Comment
  CAS-BOT-BC255249  Chorizanthe staticoides Helen D. Geis 1902-1-1 542 Orange Hills near Santa Ana Comment
  CAS-BOT-BC255256  Chorizanthe staticoides John Thomas Howell 1927-6-8 2455 Orange Southern Puente Hills in the Santa Ana Canyon 182 Comment
  RSA539353  Chorizanthe staticoides Fred M. Roberts, Carol A. Roberts 1988-6-2 4041 Orange Silverado Canyon, Maple Springs Truck Trail, 4.3 km above gate., 1.0km WSW Bald Pk. 825 Comment
  RSA588851  Chorizanthe staticoides Fred M. Roberts, Kathy Keane 1989-6-28 4392 Orange Laguna Niguel: Just beyond end of Le Conte Rd along ridge, 0.6 km SW summit of Niguel Hill. 195 Comment
  UC635059  Chorizanthe staticoides Herbert L. Mason 1926-4-25 2913 Orange 5 mi below Laguna; below Laguna Comment
  UCR79246  Chorizanthe staticoides Steve Boyd, T. S. Ross 1992-5-19 7422 Orange Santa Ana Mtns., San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo (7S06) north into Aliso Canyon 457 Comment
  CDA7383  Chrysanthemoides monilifera A. C. Sanders, Mark A. Elvin 2003-10-12 27324 Orange Southern Coastal Slope; Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. Comment
  UCR150049  Chrysanthemum coronarium L. C. Wheeler 1947-5-3 6474 Orange Newport Bay, Newport Bay Comment
  RSA97387  Cicuta bolanderi Joseph A. Ewan 1932-7-29 7729 Orange Large colony (plants 4-8 ft.) in backwater of marsh. Newport Lagoon Comment
  RSA659544  Cirsium occidentale P. Shirokawa 1998-5-7 18 Orange Cleveland National Forest- Trabuco Ranger District, 0.55 miles from Ortega Highway (State Highway 74) on North Main Divide Road 838 Comment
  SD143571  Cirsium occidentale var. californicum R. D. Goeden, D. W. Ricker 1965-6-21 Orange Dana Point 75 Comment
  RSA68335  Cirsium occidentale var. occidentale G. R. Campbell 1951-5-30 16154 Orange San Juan Canyon, Ortega Hwy, 4 mi. inside west border of Cleveland National Forest. 152 Comment
  RSA569735  Cistanthe monandra A. S. Boughey 153 Orange Santa Ana Mountains: Ortega Hwy., ca. 1 mi. east of San Juan Guard Sta. Comment
  RSA783257  Clarkia J. D. Olmsted 1959-4-23 455 Orange Spring Trail at Beacon Pines Ranch; 9 miles SW of Corona. 762 Comment
  POM153245  Clarkia bottae C. L. Hitchcock 1928-5-5 49 Orange Mouth of Santa Ana Canyon. 150 Comment
  RSA5466  Clarkia bottae Carl B. Wolf 1932-7-2 3825 Orange Carbon Canyon, 1/8 mile below La Vida Springs 213 Comment
  SDSU8634  Clarkia bottae Ruth Haaf, Josephine Morehous 1932-5-28 Orange Carbon Canyon Comment
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Jan 24 2013
  UCR234145  Clarkia dudleyana Dick Newell, Judy Booth 2012-5-6 250 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, 1.2 miles NE of Maple Springs gate, Cleveland National Forest 695 Comment
  POM3136  Clarkia epilobioides P. A. Munz 1918-5-4 2175 Orange Laguna Beach Comment
  RSA511063  Clarkia purpurea subsp. purpurea S. J. Myers 1989-5-4 s.n. Orange Near Horsetrough Spring at the head of Black Star Canyon, Santa Ana Mountains. 640 Comment
  RSA637490  Clarkia purpurea subsp. quadrivulnera Valerie L. Soza, LeRoy Gross 1999-6-8 507 Orange Santa Ana Mountains: Santiago and Modjeska Canyons, above Tucker Wildlife Sanctuary, above the town of Modjeska 518 Comment
  UCSB48212  Clarkia purpurea subsp. quadrivulnera Roberts, Fred 1981-5-3 Orange Santa Ana Mtns; Hot Springs Cyn; 0.8 km by road N of San Juan Guard Station 256 Comment
  CAS-BOT-BC172374  Clarkia purpurea subsp. viminea L. R. Abrams 1901-6-10 1796 Orange Santiago Peak Trail Comment
  RSA680553  Claytonia perfoliata Scott D. White 2003-3-21 8807 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  CAS-BOT-BC439944  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
  UC1136736  Claytonia perfoliata subsp. mexicana A. Lewis 1934-4-1 378 Orange Coal Mine; Corona Quad. 243 Comment
  UCR218458  Claytonia perfoliata subsp. mexicana Robert DeRuff 2008-1 563 Orange South Coast, Upper Newport Bay, below intersection of Back Bay Dr. and East Bluff Dr. 12 Comment
  RSA276911  Claytonia perfoliata subsp. mexicana J. M. Miller 1978-3-18 708 Orange San Juan Capistrano; 3.9 miles E of Hwy 101 junction in the San Juan Creek Valley, Hwy 74. 76 Comment
  UCR250860  Clematis lasiantha Dick Newell, Judy Booth 2014-2-16 353 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Long Canyon Rd., 0.25 mi. east of El Cariso Hot Shot Camp 905 Comment
  RSA542411  Clematis ligusticifolia Fred M. Roberts, Karen Calloway 1988-1-27 3774 Orange San Juan Canyon, Hwy 74, 1.1km SW Lower San Juan Picnic Ground. 403 Comment
  RSA0061168  Clematis ligusticifolia Robt. Allen 2007-8-11 s.n. Orange Santa Ana Mountains region: Silverado Canyon, Maple Springs Road. 791 Comment
  UCR209671  Clematis pauciflora Fred M. Roberts 2008-4-16 6904 Orange South Coast, Dana Point Headlands, Center for Natural Lands Mgmt. Preserve, 0.8 km west of the Marine Institute, Dana Point Harbor 45 Comment
  RSA542395  Cneoridium dumosum Fred M. Roberts Jr. 1987-3-24 3271 Orange Laguna Beach: Goff Ridge, south of Nyes Place Rd., 0.9km NNE Goff Island. 169 Comment
  RSA21803  Cnicus benedictus E. R. Johnson 1937-5-28 8767 Orange Rancho Santa Ana, Santa Ana Canyon 122 Comment
  SEINET1908696  Collinsia concolor A. C. Sanders, Fred M. Roberts 2008-1 35026 Orange Peninsular Range; Santa Ana Mtns: Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 366 Comment
  UCR86994  Collinsia concolor B. G. Pitzer, Stu Hemstreet 1992-5-27 1954 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
  POM15031  Comarostaphylis diversifolia subsp. diversifolia Mary F. Spencer 1932-05 1971 Orange Canyon Prope. 61 Comment
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Nov 19 2013
  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
  RSA357138  Conium maculatum R. F. Thorne 1975-4-6 45575 Orange San Joaquin Marsh: Near Irvine and coast. Comment
  IRVC968  Convolvulus arvensis E. McRae 1965-4-3 Orange Costa Mesa Comment
  IRVC973  Convolvulus arvensis A. Weir 1965-5-9 Orange Mar Vista, east bluff. Newport Beach Comment
  RSA627781  Convolvulus arvensis Scott D. White 1998-3-24 6235 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
  UCR109770  Convolvulus arvensis R. D. Goeden, Don W. Ricker 1965-6-15 s.n. Orange Santiago Blvd., Villa Park 91 Comment
  RSA650758  Convolvulus arvensis Gary Guntle 1971-5-9 s.n. Orange Eucalyptus grove near Bastanchury Road & Associated . Placentia. Comment
  RSA557  Convolvulus simulans J. T. Howell 1928-2-26 s.n. Orange Bee Canyon, Rancho Santa Ana. 305 Comment
  RSA703142  Conyza bonariensis Fred M. Roberts 2003-9-11 6014 Orange Rancho Mission Viejo; Donna O'neill Land Conservancy, Cristianitos Cyn., 0.79 km N of Sycamore Gate, 0.23 km W of Christianitos Road. 126 Comment
  CAS-BOT-BC286163  Conyza canadensis Ira L. Wiggins 1966-2-1 20408 Orange Just E. of Letters & Science Building, California State College at Fullerton Comment
  RSA0036109  Conyza canadensis Fred M. Roberts, Carol A. Roberts 2008-9-28 7113 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor) 75 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
  RSA835  Conyza canadensis J. T. Howell 1927-9-24 743 Orange Santa Ana Botany Garden 152 Comment
  CAS-BOT-BC286164  Conyza canadensis Carl B. Wolf 1932-9-13 4041 Orange Bryant Ranch: North boundary between Flood Control Dike & well in S.E. 1/4 Sect. 25 (about 1300 ft. W. of N.E. corner of S.E. 1/4 Sect. 25 T4S R12 W. 20) 6 Comment
  IRVC22979  Conyza coulteri Karlin G. Marsh 1986-12-8 none Orange Yorba Linda; Santa Ana Canyon, Santa Ana River, Featherly Park. Santa Ana Mountains Comment
  POM4592  Conyza coulteri I. M. Johnston 1918-9-3 2148 Orange Laguna Canyon (at the lakes) 107 Comment
  UCR241916  Conyza coulteri Fred M. Roberts, Lee Ann Caranza 2009-9-23 7162 Orange Southern Coastal Plain, Dana Point, Dana Point Headlands, CNLM Dana Point Preserve, old Marguerite Road bed just west of the Nature Center and just east of the terminus of Dana Strands Road, 0.7 km west pier, Dana Point Harbor 73 Comment
  UCR179769  Conyza floribunda R. E. Riefner Jr. 2003-12-13 03- 503 Orange South Coast, Los Alamitos, San Gabriel River, vicinity of Chestnut St. and Cerritos Ave. 11 Comment
  RSA0045606  Cordylanthus pilosus R. H. McArthur 1934-5-19 s.n. Orange Live oak Canyon. Comment
  RSA711  Cordylanthus rigidus subsp. setiger J. T. Howell 1927-7-29 518 Orange Near east boundary of Rancho Santa Ana. 213 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-BC287841  Coreopsis californica Miss. Helen D. Geis 1904-4-1 732 Orange Silverado Canon, Santa Ana Mts Comment
  HSC5418  Corethrogyne filaginifolia J. W. Johnson 1961-2-19 Orange Newport Beach, marine terrace above upper Newport Bay. Comment
  POM201858  Corethrogyne filaginifolia L. M. Booth 1933-8-26 1385 Orange Newport Lagoon. Comment
  RSA0015955  Corethrogyne filaginifolia Fred M. Roberts 2012-5-10 7567 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
  SD236212  Corethrogyne filaginifolia A. C. Sanders, Fred M. Roberts 2008-7-16 35825 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, along road in lower Limestone Canyon, near junction with Harding Truck Trail (El Toro 7.5'Q) 289 Comment
  UC537259  Corethrogyne filaginifolia L. M. Booth 1933-8-26 1385 Orange Newport Lagoon Comment
  PASA1814  Corethrogyne filaginifolia Frank W. Peirson 1924-8-29 Orange 2 miles from Balboa on toad inland along creek Comment
  CLARK-A1528-1790  Corethrogyne filaginifolia var. virgata John C. Roos 1937-9-1 2519 Orange Laguna Beach Comment
  RSA397461  Cornus nuttallii T. W. Minthorn 1926-5-10 s.n. Orange Orange Co. Comment
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Mar 6 2019
  JEPS50151  Cornus sericea subsp. sericea Lawrence M. Booth 1932-7-19 1278 Orange Bolsas Creek Comment
  UCR107844  Coronopus didymus Scott D. White 1998-3-24 6227 Orange Irvine. Univ. of Calif. Irvine Campus: Site of proposed Research Park. SW of main campus circle, c. halfway between Berkeley Av. and new freeway (Bonita Cyn) 37 Comment
  SD133232  Cortaderia selloana A. C. Sanders 1990-10-6 10196 Orange Newport Bay; North Star County Beach area on the southwest end of bay; ca 2 km inland of highway 1; on sandy flats and bluffs 0 Comment
  POM4853  Cosmos bipinnatus D. L. Crawford 1916-5-10 s.n. Orange Laguna Mts. Comment
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Sep 13 2014
  IRVC16765  Cotula coronopifolia J. B. Anderson 1966-4-16 582 Orange Newport Beach; Corona del Mar; Buck Gully; "Little Corona Beach"; moist canyon bottom with small brooklet near stream. Southern Coastal 0 Comment
  SD108922  Cotula coronopifolia Thomas Eakle 1971-5-28 148 Orange 2 miles northeast of Newport at Newport Bay Saltmarsh. Comment
  UCR100452  Cotula coronopifolia B. G. Pitzer 1996-4-30 2774 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR138397  Cotula coronopifolia Scott D. White, Brian Leatherman 1997-6-12 5335 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
  UCR207795  Cotula coronopifolia O. F. Clarke 2004-4-5 s.n. Orange South Coast, Newport Back Bay 3 Comment
  POM13643  Crassula aquatica P. A. Munz 1921-4-12 4479 -a Orange Laguna Beach. Dying pool, 1 mile N of Laguna 61 Comment
  CAS-BOT-BC427772  Crassula connata Ira L. Wiggins 1966-2-12 20429 Orange N. side of La Palma Ave. near Harbor Blvd., Anaheim. Comment
  IRVC25399  Crassula connata Fred M. Roberts 1987-4-3 3338 Orange San Joaquin Hills; Irvine; central Shady Canyon, 2.9km NE Signal Hill. Central coastal 107 Comment
  UC1543005  Crassula connata Donald G. Nelson 1935-3-23 178 Orange just s. of <Orange thorpe> Ave. E. Fullerton Comment
  UCR103791  Crassula connata Scott D. White 1997-2-19 4700 Orange Santa Ana Mtns, above Modjeska Canyon; proposed water tank site 488 Comment
  RSA0135553  Crassula connata var. connata David E. Bramlet 2003-3-14 3345 Orange Coastal Plains & Basins; South Coastal Plain region: Newport Beach. 30.5m west of Avocado & 183m W of McArthur Blvd & 190m N of the Newport Beach Library. 49 Comment
  UC484241  Crassula connata var. erectoides C. B. Wolf 1931-3-6 Orange 1/2 mi. above Trabuco; w. slope Santa Ana Mts., Trabuco Canyon 457 Comment
  RSA609048  Cressa truxillensis L. C. Wheeler 1932-6-25 864 Orange Newport Bay Comment
  UCR107220  Cressa truxillensis Scott D. White 1998-6-26 6781 Orange Irvine, University of California, Irvine campus: low-lying seasonal wetland along mapped intermittent 'blueline' stream just north of Bonita Canyon Drive 70 Comment
  RSA394757  Cressa truxillensis Albert J. Perkins 1917-11-3 s.n. Orange Santa Ana. Comment
  UCR208860  Cressa truxillensis var. vallicola L. C. Wheeler 1932-6-25 0864 Orange Coastal Plains and Basins; Los Angeles Basin region, Newport Bay 0 Comment
  OBI30078  Croton californicus L. Fountain 1966-4-1 72 Orange Near Rancho Santa Ana, at the end of Orangethorpe Ave Comment
  RSA700002  Croton californicus Minor Warne 1934-3-10 s.n. Orange Limestone Canyon 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
  SEINET9253096 Image available Croton californicus Czarnecki 1966-4-1 58 Orange Near Rancho Santa Ana at end of Orangethorpe Ave. Comment
  UCR191234  Croton setiger A. C. Sanders, Fred M. Roberts 2008-4-22 34984 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
  UCR193350  Croton setiger A. C. Sanders 2008-5-28 35439 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  RSA731962  Croton setiger A. Sanders, Fred M. Roberts 2008-4-22 34984 Orange Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mi. NE of Rattlesnake Reservoir. 213 Comment
  RSA800670  Crypsis schoenoides Justin M. Wood 2010-9-29 2751 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
  RSA0029036  Cryptantha Keith E. Hoffmaster 1934-4-8 137 Orange Santa Ana Mts. 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
  POM49205  Cryptantha clevelandii L. R. Abrams 1901-4-13 1780 Orange Laguna, San Joanquin Hills. Comment
  UCR193047  Cryptantha clevelandii A. C. Sanders, Mitch Provance 2008-5-20 35409 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  UC971737  Cryptantha intermedia L. M. Booth 1932-5-12 1028 Orange Newport Bay Comment
  UCSB47630  Cryptantha intermedia Roberts, Jr., Fred 1980-5-3 Orange Santa Ana Mtns.: 1.0 km. SE Blue Jay Campground; 2.8 km. SW El Cariso Guard Station 1010 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
  IRVC15122  Cryptantha muricata var. muricata A. S. Boughey 1968-4-23 204 Orange Black Star Canyon, .5mi below Hidden Ranch; area burned this winter. 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
  UCR217302  Cucurbita foetidissima Mark A. Elvin 2003-3-30 2398 Orange South Coast, north side of UC Irvine Preserve, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  RSA697187  Cucurbita foetidissima Anonymous 1933-1 s.n. Orange Vacant lot, Santa Ana. Comment
  UCR140973  Cupressus arizonica June Latting 1973-6-30 s.n. Orange Santa Ana Mountains, Beeks Place, south of Oak Flat 854 Comment
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Mar 28 2014
  RSA262123  Cupressus forbesii E. W. Lathrop 1976-11-17 7406 Orange 4 miles west of Corona in Gypsum Canyon. North slope of Sierra Peak. 609 Comment
  RSA7199  Cupressus forbesii B. D. Stark 1933-3-17 4532 Orange Claymine Canyon, Santa Ana Mts. 609 Comment
  RSA7201  Cupressus forbesii B. D. Stark 1933-3-17 4532 -C Orange Claymine Canyon, Santa Ana Mts. 609 Comment
  UCR15234  Cupressus forbesii E. W. Lathrop 1976-11-17 7406 Orange Santa Ana Mtns., 4 mi west of Corona in Gypsum Canyon on the N slope of Sierra Peak. 610 Comment
  UCR37801  Cupressus forbesii 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
  RSA797476  Cuscuta ceanothi R. F. Thorne 1977-11-21 49989 Orange Santa Ana Mountains: San Juan Canyon about 2 miles above San Juan Fire Station Comment
  POM3664  Cuscuta salina L. R. Abrams 1901-6-12 1756 Orange Anaheim Landing Comment
  RSA70998  Cuscuta salina F. W. Peirson 1924-8-29 5080 Orange 2.5 miles from Balboa on road inland along creek. Comment
  JEPS43027  Cuscuta salina var. salina L. M. Booth 1932-7-1 1237 Orange Anaheim Creek Comment
  SD175815  Cuscuta subinclusa D. G. Kelch 2006-12-9 06 558 Orange Irvine. University Dr. along tidal creek just E of I-73. 9 Comment
  JEPS59789  Cycloloma atriplicifolium Lawrence M. Booth 1932-8-5 Orange near Huntington Beach (Santa Ana River Channel, 3 mi from ocean); Santa Ana River Channel, near Huntington Beach Comment
  SD51889  Cycloloma atriplicifolium Peter H. Raven 1961-10-15 16848 Orange Santa Ana River bed at Anaheim Street crossing, Anaheim. 60 Comment
  IRVC14840  Cynara cardunculus B. Newman 1965-3-14 Orange Dana Point 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
  CAS-BOT-BC190297  Cynodon dactylon Ira L. Wiggins 1965-9-26 20253 Orange In Carbon Canyon about 3.5 miles above its mouth. Comment
  IRVC29808  Cynodon dactylon Laura D. Lyons, Mark A. Elvin 2006-9-23 422 Orange San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; SW edge, along San Diego Creek, N of University Drive, E Hwy 73. Southern Coastal 2 Comment
  RSA0042531  Cynodon dactylon Fred M. Roberts 2013-5-30 7778 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
  RSA678742  Cynodon dactylon Valerie L. Soza, Kenneth Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1112 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  UCR80012  Cynodon dactylon Scott D. White 1992-10-20 972 Orange Vicinity of city of Brea, Immediately north of Carbon Canyon Rd & east of Placentia Avenue +-1mi (air) SSEof Tonner Canyon. 183 Comment
  RSA650406  Cynodon dactylon Norman Willis 1948-2-8 s.n. Orange East of Orange. 61 Comment
  UCR266423  Cyperus difformis D. E. Bramlet 2009-11-20 4422 Orange South Coast, San Diego Creek between Irvine and Newport Back Bay 8 Comment
  RSA0028026  Cyperus eragrostis Fred M. Roberts 2012-9-6 7699 Orange San Joaquin Hills: Buck Gully, Buck Gully Trail, west end near Poppy Street entrance, 2.1 kilometers WNW Pelican Hill summit. 37 Comment
  SD245176  Cyperus eragrostis R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49572 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Along San Juan Creek. Comment
  RSA161258  Cyperus erythrorhizos Peter H. Raven 1961-10-15 16852 Orange Santa Ana River at Anaheim Street Crossing 61 Comment
  RSA365080  Cyperus erythrorhizos Anstruther Davidson 1917-08 3267 Orange Near Laguna Beach. Comment
  IRVC29698  Cyperus esculentus Mark A. Elvin, Barry S. Nerhus 2006-11-4 5244 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA599639  Cyperus involucratus Fred M. Roberts, P. Barrett, G. Bastillos 1995-7-25 4968 Orange Santa Ana Mountains: San Juan Canyon along San Juan Creek, San Juan Hot Springs, 0.8 kilometer SSW Juan Rancho Survey Mark. 214 Comment
  CAS-BOT-BC114246  Cyperus laevigatus Carl B. Wolf 1932-7-2 3814 Orange Carbon Canyon, 1/8 mi below La Vida Springs. 213 Comment
  UC729958  Cyperus laevigatus Carl B. Wolf 1932-7-2 3812 Orange 1/8 mi. below La Vida Springs (Carbon Canyon); Carbon Canyon 213 Comment
  CAS-BOT-BC537198  Cyperus niger R. F. Thorne 1977-11-21 49999 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  RSA0036013  Cyperus odoratus Robert F. Thorne 1977-11-21 50802 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  UCD169091  Cyrtomium falcatum R. E. Riefner Jr. 2011-7-7 11- 87 Orange City of Dana Point, S of Mussel Cove, N of Salt Creek Beach Park. 4 Comment
  CDA20218  Dactyloctenium aegyptium R. Tiffer 2003-9-4 PDR 1256123 Orange Southwestern California; Santa Ana River bank in Anaheim. 0 Comment
  RSA483  Datisca glomerata J. T. Howell 1927-7-3 263 Orange Claymine Canyon near Sierra Peak. 305 Comment
  RSA562811  Datisca glomerata Steve Boyd, Timothy S. Ross 1992-5-20 7483 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
  UCD169744  Datisca glomerata R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49563 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). 432 Comment
  IRVC27503  Datura stramonium Mark A. Elvin 2004-5-2 3417 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  JEPS12207  Datura stramonium Lawrence M. Booth 1932-7-30 1345 Orange near Newport Beach (Santa Ana River Basin); , near Newport Beach Comment
  RSA421912  Datura wrightii Albert J. Perkins 1922-11-22 s.n. Orange Laguna heights Comment
  POM48016  Datura wrightii I. M. Johnston 1924-8-29 s.n. Orange 1 mi. N of Los Alamitos. Comment
  IRVC17044  Daucus pusillus C. Thompson 1965-4-12 Orange Laguna Hills Comment
  SD220032  Daucus pusillus Mark A. Elvin 2004-5-2 3409 Orange Irvine; San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW UC Irvine campus center. 3 Comment
  UCSC001457  Daucus pusillus Peter Kamb 1948-6-19 1086 Orange Holy Jim Canyon, Santa Ana Mountains 610 Comment
  CAS-BOT-BC299331  Deinandra fasciculata H. F. Copeland 1938-6-28 s.n. Orange Hills back of Laguna Beach Comment
  UCR252707  Deinandra fasciculata R. E. Riefner Jr. 2014-5-13 14- 123 Orange South Coast, City of San Clemente, Rancho San Clemente Trail, east c. 0.15 mi. from Ave. Salvador and south c. 0.1 mi. off Utility Access Rd. 239 Comment
  CAS-BOT-BC299328  Deinandra fasciculata Palmer Stockwell 1934-5-12 60 Orange Laguna Beach Comment
  CAS-BOT-BC131026  Deinandra paniculata John Thomas Howell 1931-6-1 6626 Orange San Clemente Comment
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Oct 4 2017
  CAS-BOT-BC383062  Deinandra paniculata R. E. Riefner, Jr. 2008-5-19 08 -101 Orange Ladera Ranch, Cecil Pasture at Jerome Rd. 157 Comment
  OBI74758  Deinandra paniculata Unknown 2003-8-31 03 -337 Orange San Clemente State Beach, mima mound field in SW corner of park 27 Comment
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Feb 23 2018
  UCR146881  Deinandra paniculata Kathleen Stockwell 1999-5-30 s.n. Orange South Coast, north of Cristianitos Road, San Clemente 61 Comment
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Jan 8 2013
  RSA724055  Deinandra paniculata R. E. Riefner 1994-9-6 94 -552 Orange City of Dana Point, Dana Hills, vicinity of Dana Hills High School. 27 Comment
  CAS-BOT-BC9095  Delphinium cardinale John Thomas Howell 1927-7-26 2837 Orange SE fork of Claymine Canyon, northern Santa Ana Mtns. 304 Comment
  RSA16419  Delphinium parryi Percy C. Everett 1935-5-19 6871 Orange Santa Ana Mts, Baker Canyon, W Ladd Truck Trail 305 Comment
  RSA69411  Delphinium parryi F. W. Peirson 1925-4-11 5745 Orange 5 miles south of Laguna Beach. Comment
  UC1607980  Delphinium parryi Donald G. Nelson 1935-4-6 247 Orange just e of San Juan Capistrano (and just s of boundary of Cleveland National Forest, branching northward from the summer ranger station at main Hwy up San Juan Canyon); San Juan Canyon Comment
  UCR193343  Delphinium parryi A. C. Sanders 2008-5-28 35432 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  UCR220962  Delphinium parryi Dick Newell, Don Millar, Ashley Nelson 2010-6-8 24 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Limestone Canyon Rd. at junction with Dripping Springs Rd., 1/2 mile SW of Silverado Rd. and Santiago Rd. 305 Comment
  RSA304850  Delphinium parryi James R. Shevock 1315 Orange Newport Beach Bay. 11 Comment
  CAS-BOT-BC82947  Dendromecon rigida G. R. Campbell 1949-4-18 13449 Orange Santa Ana Mountains. Santiago Peak. Comment
  RSA171106  Dendromecon rigida subsp. rigida Robert F. Thorne 1963-7-26 32833 Orange Santa Ana Mts., Cleveland National Forest, Trabugo District. 1189 Comment
  RSA697422  Dentaria integrifolia R. H. McArthur 1934-3-3 62 Orange Forks of Laguna Canyon. Comment
  RSA162740  Descurainia californica J. D. Olmsted 1959-4-23 472 Orange Spring Trail at Beacon Pines Ranch; 9 miles SW of Corona. 762 Comment
  UCR261716  Descurainia pinnata Dick Newell, Judy Booth, Don Millar 2015-2-18 389 Orange South Coast, Newport Beach, New Delhi Channel near end of University Drive 4 Comment
  CAS-BOT-BC43187  Descurainia pinnata subsp. brachycarpa Helen D. Geis 1902-3-1 s.n. Orange Santa Ana River. Comment
  CAS-BOT-BC43190  Descurainia pinnata subsp. brachycarpa Carl B. Wolf 1932-3-8 2681 Orange 0.5 mile north of Corona Del Mar. Borders of Newport Bay. 7 Comment
  RSA761799  Dicentra chrysantha Robt. Allen 2003-6-22 12293 Orange Northwest-facing flank of Santiago Peak, along North Main Divide Road. 1556 Comment
  RSA734281  Dichelostemma capitatum A. C. Sanders, Linda Farley, Fred M. Roberts, D. Bramlet 2008-4-1 34644 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 250 Comment
  HSC22053  Dichelostemma capitatum subsp. capitatum S. M. Clapp 1966-4-7 21 Orange 3 mi. from Modjeska Canyon towards Silverado Canyon 152 Comment
  RSA590942  Dichelostemma capitatum subsp. capitatum Fred M. Roberts Jr. 1991-5-2 4782 Orange San Joaquin Hills: Laguna Canyon, Laguna Laurel, just W of Laguna Canyon Road, ca 2 km N jct El Toro Road, 4.5 km E Signal Peak. 110 Comment
  RSA528053  Digitaria ciliaris A. C. Sanders 1990-10-6 10181 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Highway 1. 1 Comment
  SD245206  Digitaria sanguinalis R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49611 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station. Comment
  RSA0019267  Dimorphotheca ecklonis Fred M. Roberts, Sandra Leatherman, Jennifer Pareti 2009-4-14 7149 Orange Dana Point Headlands: Dana Strand Beach and slopes above beach, 0.8 km WNW Marine Institute at Dana Point Harbor. CNLM Dana Point Preserve. 3 Comment
  SD237346  Dimorphotheca fruticosa Mark A. Elvin 2003-2-23 2315 Orange South Coast: Irvine, San Joaquin Marsh along the berm of San Diego Creek. 3 Comment
  SEINET3412116 Image available Diplachne fusca var. uninervia Pat Sawyer 34 Orange from Back Bay area at Newport Beach Comment
  SD225118  Diplacus aurantiacus B. Pitzer 1996-4-30 2801 Orange Crystal Cove State Park, S of City of Irvine on State Hwy 1 (Pacific Coast Hwy). 14 Comment
  SJSU1768  Diplacus aurantiacus G. B. Youngberg 1956-3-27 185 Orange Irvine Park c. 8 mi E of Orange 259 Comment
  CAS-BOT-BC152059  Diplacus longiflorus John Thomas Howell; Alice Eastwood 1937-4-24 3929 Orange 2 miles east of San Juan Hot Springs Comment
  CAS-BOT-BC150842  Diplacus puniceus Alice Eastwood; John Thomas Howell 1937-4-24 3931 Orange 2 miles east of San Juan Hot Springs Comment
  RSA715248  Diplotaxis muralis A. C. Sanders 2006-5-6 32250 Orange South Coast: UC Irvine Arboretum, NE side of gardens towards Campus Dr. 15 Comment
  RSA16979  Diplotaxis muralis P. C. Everett 1936-3-20 7762 Orange Rancho Santa Ana, Santa Ana canyon from Botanic Garden, W of Adm bldg 198 Comment
  SEINET182346 Image available Distichlis spicata Lawrence M. Booth 1932-5-25 1116 Orange Balboa Ilsand Newport Bay Comment
  UC537120  Distichlis spicata Lawrence M. Booth 1932-5-25 1116 Orange Balboa Island, newport Bay Comment
  CAS-BOT-BC41692  Draba cuneifolia var. sonorae Helen D. Geis 1902-1-1 529 Orange Santiago Creek. Comment
  LA208037  Drymocallis glandulosa Harlan Lewis; 1935-5-5 sn Orange Mouth of upper Santa Ana C 609 Comment
  IRVC124  Dryopteris arguta A. S. Boughey, P. Pembrook 1965-6-15 1056 Orange Santa Ana Mountains; Saddleback Mtn., Cleveland National Forest. Peninsular Ranges Comment
  IRVC20515  Dryopteris arguta Fred M. Roberts 1983-9-26 1120 Orange Lion Canyon, Chiquito Basin Trail, 3.3km NNE Lower San Juan Picnic Ground; 4.3km SSE Los Pinos Peak. Santa Ana Mountains 810 Comment
  IRVC22501  Dryopteris arguta Fred M. Roberts 1985-4-30 1673 Orange Laguna Beach: Temple Hill; at margin of "Dripping Springs Canyon"; 0.4km NNE Top of the World School. Southern Coastal 255 Comment
  IRVC22504  Dryopteris arguta Fred M. Roberts 1985-5-1 1698 Orange Aliso Canyon, 2.1km NNE Aliso Peak, Aliso Viejo 67 Comment
  RSA301978  Dryopteris arguta J. R. Shevock 1970-12-20 570 Orange Silverado Canyon 579 Comment
  RSA698476  Dryopteris arguta Minor Warne 1934-4-14 s.n. Orange Laguna Canyon Forks. Comment
  RSA749640  Dryopteris arguta D. E. Bramlet 2008-4-1 4138 Orange Upper Hicks Canyon, 24m S of the Haul Road 302 Comment
  UCR100209  Dryopteris arguta Scott D. White 1996-12-20 4631 Orange Santa Ana Mountains, above Modjeska Canyon; proposed water tank site 488 Comment
  IRVC24994  Dryopteris arguta Fred M. Roberts, R. Fisher 1986-6-18 3015 Orange Irvine; [San Joaquin Hills], east lateral to Shady Canyon, c.a. 2.9km SE French Hill. 82 Comment
  RSA423460  Dudleya F. R. Fosberg 1931-8-19 7221 Orange Aliso Creek, mouth Comment
  JEPS50033  Dudleya blochmaniae subsp. blochmaniae T. W. Minthorn 1924-5-30 Orange Pt. San Juan (Dana Point) Comment
  SD45413  Dudleya blochmaniae subsp. blochmaniae Reid Moran 1950-4-24 3388 Orange San Clemente, atop sea bluffs. Comment
  RSA423498A  Dudleya cymosa F. R. Fosberg 1921-6-21 748 Orange Silverado Canyon, Santa Ana Mts. Comment
  SD207011  Dudleya edulis Reid Moran 1948-6-23 3092 Orange Three Arches Beach Comment
  UC2059977  Dudleya edulis K. Nakai 1978-7-17 391 Orange Aliso Canon, ca. 200 yards from California Highway 1. Comment
  CAS-BOT-BC411408  Dudleya lanceolata E. W. Lathrop 1974-6-27 7423 Orange 5 miles E of Trabuco Oaks, Trabuco Canyon, Cleveland Nat'l. Forest 396 Comment
  IRVC22733  Dudleya lanceolata Fred M. Roberts 1985-5-13 1788 Orange South Laguna; Mouth of Aliso Canyon, 0.6km NW Aliso Peak, 6 Comment
  POM1571  Dudleya lanceolata D. L. Crawford 1916-5-10 s.n. Orange Laguna Mtns. 305 Comment
  RSA170990  Dudleya lanceolata R. F. Thorne 1963-7-26 s.n. Orange Near Beek's Spring; Tin Mine Canyon; Trabuco District, Santa Ana Mountains, Cleveland National Forest. 716 Comment
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Apr 25 2011
  SEINET3089229 Image available Dudleya lanceolata Cesareo Perez 1971-5-18 22 Orange S. Mesa Dr. & Lemon St., Villa Park. Comment
  RSA397818  Dudleya multicaulis F. W. Peirson 1922-5-18 3071 Orange Santa Ana River. 122 Comment
  RSA552936  Dudleya multicaulis Fred M. Roberts 1989-5-7 4337 Orange Lomas De Santiago: 1.8km W Santiogo Reservoir Spilway, 4.0 km SW Sierra Peak. 213 Comment
  RSA682601  Dudleya multicaulis Scott D. White, Amanda Duchardt 2003-3-27 8856 Orange Santa Ana Mountain Foothills: Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  RSA716094  Dudleya multicaulis Fred M. Roberts, Melissa Ervin 2001-3-21 5387 Orange San Joaquin Hills: Upper San Canyon, c..a. 2km SE French Hill, within the Shady Cyn. Development. 98 Comment
  UC338337  Dudleya multicaulis unknown Orange Newport Bay Comment
  CAS-BOT-BC109746  Dudleya stolonifera Reid Moran 1977-6-13 24230 Orange Willow Canyon, tributary of Laguna Canyon. 125 Comment
  UC1015150  Dudleya stolonifera Reid Moran 1950-5-24 3411 Orange 1.5 mi above canyon mouth (1.7 mi below Toro Rd junction); Laguna Canyon 243 Comment
  RSA697178  Dudleya variegata Gray s.n. Orange Panorama Heights. Comment
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Jan 10 2015
  CAS-BOT-BC109766  Dudleya viscida Carl B. Wolf 1936-6-17 7948 Orange Santa Ana Mountains, along Ortega Highway, 0.6 mile below San Juan Hot Springs. 182 Comment
  CAS-BOT-BC109767  Dudleya viscida Carl B. Wolf 1936-6-17 7948 Orange Santa Ana Mountains, along Ortega Highway, 0.6 mile below San Juan Hot Springs. 182 Comment
  SD212579  Dudleya viscida A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33053 Orange Santa Ana Mountains; San Juan Canyon from Lower San Juan Picnic Area to ca. 1.0 mile downstream, parallel to Highway 74 and near Riverside County line. 366 Comment
  UCD98691  Dysphania ambrosioides Ira L. Wiggins 1965-11-5 20319 Orange Edge of orange grove near corner of Dowling St. and Crowther Ave., Placentia. Comment
  CAS-BOT-BC197032  Echinochloa colona E. R. Johnson 1936-7-10 8104 Orange Rancho Santa Ana, Santa Ana Canyon Vegetable Garden 121 Comment
  UCD33247  Echinochloa colona Beecher Crampton 1967-5-23 7957 Orange Orange County, 4 miles east of Irvine, UC South Coast Field Station. Comment
  CAS-BOT-BC197178  Echinochloa crus-galli John Thomas Howell 1928-10-29 3188 Orange Along the highway near Cypress 30 Comment
  IRVC27752  Echinochloa crus-galli Mark A. Elvin 2004-5-2 3426 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA452553  Echinochloa crus-galli Fred M. Roberts 1987-8-19 3586 Orange Santa Ana River: adjacent to Fountain Valley, Harbor Bridge. 13 Comment
  CAS-BOT-BC445606  Echinodorus berteroi R. E. Riefner 2000-8-21 20 -728 Orange Santa Ana Mtns.: Irvine Lake [Santiago Reservoir], first cove east of the dam. 238 Comment
  CAS-BOT-BC445607  Echinodorus berteroi Frank W. Peirson 1924-5-31 4650 Orange Laguna Canon [Canyon] Comment
  CAS-BOT-BC445609  Echinodorus berteroi Le Roy Abrams 1901-6-1 1777 Orange Laguna Comment
  IRVC27653  Echinodorus berteroi R. E. Reifner 2000-8-21 20 728 Orange Irvine Lake [Santiago Reservoir], first cove SE of the dam Santa Ana Mtns. 238 Comment
  POM48523  Echinodorus berteroi F. M. Reed 1924-8-15 4963 Orange Laguna Lake bed - Laguna canyon. Comment
  RSA532554  Echinodorus berteroi David E. Bramlet 1990-10-17 2063 -1 Orange Newport Beach: Delhi Channel at the intersection of Irvine Ave. and Mesa Drive just west of Newport Beach Golf Course. 6 Comment
  UCR113444  Echinodorus berteroi R. E. Riefner Jr. 2000-8-21 20- 728 Orange Santa Ana Mountains: Irvine Lake [Santiago Reservoir], first cove southeast of the dam 238 Comment
  UCR132570  Ehrharta erecta Robert DeRuff 2002-5-2 538 Orange Southern Coast, Newport Back Bay, near 23rd Street 21 Comment
  UCR195019  Eleocharis A. C. Sanders, Fred M. Roberts 2008-8-7 35979 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  RSA799624  Eleocharis acicularis Justin M. Wood 2011-4-12 3664 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  UC1784198  Eleocharis coloradoensis Donald G. Nelson 1935-4-15 297 Orange on road from Garden Grove to Costa Mesa, converging near Costa Mesa, near the main highway from Santa Ana Comment
  UCR174181  Eleocharis montevidensis A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33048 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
  RSA573297  Eleocharis radicans Steve Boyd, Timothy S. Ross 1994-9-14 8354 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon just downstream of Lucas Canyon Trail crossing. 305 Comment
  SEINET7587045 Image available Eleocharis radicans Steve Boyd, Tim Ross 1994-9-14 8354 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon just downstream of Lucas Canyon Trail Crossing. 305 Comment
  RSA723479  Eleusine coracana subsp. africana R. E. Riefner 2006-10-4 6 -477 Orange City of Huntington Beach, along Slater Ave. near Goldenwest St. 11 Comment
  RSA723496  Eleusine coracana subsp. africana R. E. Riefner 2005-10-5 5 -718 Orange City of Yorba Linda, near Horseshoe Bend along the Santa Ana River. 102 Comment
  RSA743555  Eleusine coracana subsp. africana R. E. Riefner 2004-8-28 4 -407 Orange City of Fountain Valley, Newland Ave. at Edinger St. 14 Comment
  RSA5828  Elymus X gouldii C. B. Wolf 1932-6-28 3794 Orange Bryant Ranch, north boundary of field. 9 Comment
  RSA748263  Elymus X gouldii A. C. Sanders, Mitch Provance 2008-5-20 35396 Orange Lomas de Santiago, mouth of Hangman Tree Canyon just above confluence with Santiago Creek Canyon, c. 1/2 mile below Modjeska Canyon confluence 366 Comment
  SEINET10561498  Elymus X hansenii Alvares ALVARES 1814 Orange Santrago P.K. Trail. Comment
  RSA443840  Elymus glaucus subsp. glaucus J. W. Johnson 1977-5-28 s.n. Orange Santa Ana Mountians: Santiago Canyon, Modjeska, Norman Fleming property. Comment
  RSA0013953  Elymus glaucus var. glaucus Fred M. Roberts 2008-5-7 6940 Orange Lomas de Santiago: Loma Ridge, Limestone Ridge between Dripping Spr. and Limestone Cyn., 3.5 km NW Bolero Lookout and 1.7 km E Bee Peak. Irvine Ranch Conservancy. 481 Comment
  RSA539340  Elymus multisetus Fred M. Roberts, Carol A. Roberts 1988-6-9 4078 Orange Santa Ana Mountains: Modjeska Peak, 0.9km SW summit., 3730500mN, 449000mE 1542 Comment
  UCR193379  Elymus triticoides A. C. Sanders, Mitch Provance 2008-5-20 35396 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, mouth of Hangman Tree Canyon just above confluence with Santiago Creek Canyon, c. 1/2 mile below Modjeska Canyon confluence 366 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
  UCR192079  Emmenanthe penduliflora A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35280 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  VVC254  Emmenanthe penduliflora P. J. MacKay 1990-5-25 s.n. Orange Peninsular Range, Hwy 74 near San Juan Hot Springs 198 Comment
  IRVC649  Encelia californica L. Stilgenbauer 1965-3-28 Orange Corona del Mar, MacArthur Blvd. Newport Beach Comment
  POM202371  Encelia californica L. M. Booth 1932-5-12 1029 Orange Newport Bay. Comment
  POM48553  Encelia californica F. M. Reed 1925-5-14 4985 Orange Aliso Canon. Comment
  RSA650815  Encelia californica Daniel Truong 1991-5-13 31 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  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
  UCR230243  Encelia californica Dick Newell, Don Millar 2011-3-15 082 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash 219 Comment
  IRVC659  Encelia californica L. Burns 1965-5-2 Orange 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
  RSA746042  Encelia californica Archie F. Iskaq 2006-2-4 1 Orange Southern Coastal: San Joaquin Marsh; NW edge of marsh. Comment
  UC1607997  Epilobium canum Donald G. Nelson 1933-7-16 133 Orange hills N of Fullerton 76 Comment
  UCR220969  Epilobium canum Dick Newell, Don Millar 2010-8-3 31 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, One Cactus Trail, 1/4 mile west of Limestone Ridge Rd., 0.88 mi. west of Santiago Canyon Rd. 409 Comment
  UCR247893  Epilobium canum subsp. canum Fred M. Roberts 2012-7-18 7660 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
  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
  POM3140  Epilobium ciliatum subsp. ciliatum D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon. Comment
  RSA731008  Epilobium ciliatum subsp. ciliatum Fred M. Roberts 2006-11-15 6471 Orange Santa Ana Cyn., Santa Ana River, north bank, 1.1 km ENE Imperial Hwy crossing. 85 Comment
  RSA666097  Epilobium pygmaeum Fred M. Roberts, Michelle Lee 2001-6-4 5481 Orange Rancho Mission Viejo: Chiquita Ridge, 0.2km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. 218 Comment
  UCR15896  Epipactis gigantea Steve Boyd 1978-4-26 780426- 08 Orange Peninsular Range; Santa Ana Mtns., Hwy 74, 1.3 mi west of the Riverside/Orange Co. line Comment
  CAS-BOT-BC57384  Equisetum laevigatum John Thomas Howell 1927-6-6 2441 Orange Santa Ana River bottom, Santa Ana Canyon 152 Comment
  CAS-BOT-BC57385  Equisetum laevigatum Crawford; Johnston 1917-6-9 1216 Orange Santa Ana River near Corona Comment
  IRVC21385  Equisetum laevigatum A. S. Boughey 1968-7-9 406 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  RSA752896  Equisetum laevigatum A. C. Sanders, Fred M. Roberts 2008-8-7 35987 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 185 Comment
  CAS-BOT-BC57386  Equisetum laevigatum Helen D. Geis 1902-4-1 s.n. Orange Santa Ana Comment
  RSA0031657  Equisetum telmateia subsp. braunii Keith E. Hoffmaster 1934-7-3 106 Orange Near Costa Mesa. Comment
  POM298879  Eragrostis mexicana subsp. virescens Frank W. Gould 1944-6-25 2362 Orange Tournat Ranch, Garden Grove. Comment
  RSA226743  Eragrostis mexicana subsp. virescens I. L. Wiggins 1965-11-7 20358 Orange Vacant lot between State College Blvd. and Troy High School Campus, Fullerton. Comment
  SBBG128578  Eragrostis mexicana subsp. virescens R. F. Thorne, E. Lathrop, W. Wisura 1977-7-8 49567 Orange San Juan Cyn at lower picnic camp, just below Ortega Hwy (74); Santa Ana Mtns Comment
  CAS-BOT-BC284066  Eragrostis pectinacea var. pectinacea Tim Hartz 1990-11-19 s.n. Orange Irvine, U.C. South Coast Field Station near the U.C. Irvine campus Comment
  RSA697579  Eremocarpus setiger J. Vlahos 1933-1 s.n. Orange Blackstar Canyon. Comment
  SEINET7909394  Eriastrum eremicum G. A. Wojciechowski 1967-1 Orange San Juan Capistrano 610 Comment
  JEPS69115  Eriastrum sapphirinum John Thomas Howell 1927-6-9 2471 Orange Santa Ana Canyon Rancho Santa Ana 213 Comment
  UCR144768  Eriastrum sapphirinum Scott D. White, Michael Honer 2003-5-29 9430 Orange Santa Ana Mtn foothills, Rancho Mission Viejo. Hills above Canada Gobernadora on west side of canyon, c. 1 air mile north of Ortega Hwy. 152 Comment
  RSA0121314  Eriastrum sapphirinum subsp. dasyanthum E. K. Balls 1949-6-16 13477 Orange Growing spontaneously in Botanic Garden (on trail from Skyline Drive to Adolphia), Santa Ana River Canyon. 274 Comment
  RSA0121318  Eriastrum sapphirinum subsp. dasyanthum Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, head of Gypsum Canyon 412 Comment
  JEPS19147  Ericameria palmeri var. pachylepis John Thomas Howell 1927-9-24 3114 Orange Santa Ana Canon Rancho Santa Ana, Santa Ana Canon 152 Comment
  SEINET5708382 Image available Ericameria palmeri var. pachylepis C. W. Tilforth 1976-1 1228 Orange Open slopes above Santa Ana Canyon on Rancho Santa Ana property.; Santa Ana Canyon Comment
  RSA38491  Ericameria parishii Percy C. Everett 1945-11-13 11512 Orange Indian Canyon Truck Trail, Indian Canyon, Santa Ana Mts. 960 Comment
  CAS-BOT-BC293092  Ericameria pinifolia John Thomas Howell 1927-10-22 3158 Orange On n. side of Santa Ana Canon [Canyon] 213 Comment
  CAS-BOT-BC296140  Erigeron foliosus var. foliosus Le Roy Abrams 1901-6-17 2220 Orange El Toro Comment
  RSA5322  Eriodictyon crassifolium B. D. Stark 1932-12-30 4473 Orange Rancho Santa Ana. River bottom below Mexican houses. 122 Comment
  RSA699659  Eriodictyon crassifolium Keith E. Hoffmaster 1931-3-22 s.n. Orange Santa Ana Mountains Comment
  RSA763546  Eriodictyon crassifolium Doris Bowers 1971-4-19 1694 Orange Black Star Canyon Indian Site 762 Comment
  SJSU8878  Eriodictyon crassifolium H. E. McMinn 1935-6-22 3929 Orange Ridge above Clay Mine Canyon, N end of Santa Ana Mts Comment
  RSA748172  Eriodictyon crassifolium var. crassifolium K. M. Meyer, A. Townesmith, T. Scott 2007-3-10 1 Orange Cleveland National Forest, 0.5 mi. N Main Divide Rd./NF3S04, off Hwy. 74. Elsinore Mtns., ridge top. 917 Comment
  SEINET10697903  Eriodictyon crassifolium var. crassifolium Karen M. Meyer, Andrew Townesmith; Tracy Scott 2007-3-10 Meyer 1 Orange Cleveland National Forest, 0.5 mi. N. Main Divide Rd./NF3S04, off Hwy. 74. Elsinore Mountains, ridge top. 917 Comment
  UCSB56682  Eriogonum cinereum Roberts, Fred 1985-7-22 Orange Irvine: MacArthur Blvd., 0.2km N Bonita Canyon Rd.; 1.6km W UC Irvine campus 15 Comment
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Feb 22 2019
  UCR193801  Eriogonum elongatum A. C. Sanders, Fred M. Roberts 2008-7-3 35675 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 Comment
  UCR222864  Eriogonum elongatum T. B. Salvato 2010-10-27 5135 Orange South Coast, Dana Point Headlands, Hilltop Park, north of Scenic Dr. and west of Green Lantern St., overlooking Dana Point Harbor 84 Comment
  UCR45132  Eriogonum elongatum B. G. Pitzer, L. F. LaPre 1986-10-20 s.n. Orange Santa Ana Mtns, Summit of Hicks Canyon on a private road (continuation of Jeffrey Road), c. 2.4 mi. above the gun club 274 Comment
  CAS-BOT-BC249759  Eriogonum elongatum var. elongatum James L. Reveal; Caroline G. Reveal 1972-8-6 2845 Orange Along California Highway 74, San Juan Canyon, Santa Ana Mountains, 2.8 miles east of the Cleveland National Forest line and about 14 miles east-northeast of San Juan Capistrano Comment
  POM293156  Eriogonum fasciculatum Lyman Benson 1946-5-13 12096 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
  CAS-BOT-BC253218  Eriogonum fasciculatum var. fasciculatum Joseph Andorfer Ewan 1932-7-28 7705 Orange Corona del Mar Comment
  SEINET253237  Eriogonum fasciculatum var. fasciculatum Lawrence M. Booth 1932-7-27 1326 Orange Corona del Mar, Newport Beach, Ocean Bluff. Comment
  SEINET3386503 Image available Eriogonum fasciculatum var. fasciculatum Joseph Ewan 1932-7-28 7705 Orange Corona Del Mar Comment
  UC536912  Eriogonum fasciculatum var. fasciculatum Lawrence M. Booth 1932-7-27 1326 Orange Ocean Bluff, Corona del Mar Newport Beach, Corona del Mar Comment
  SEINET6418403  Eriogonum fasciculatum var. fasciculatum Lott, Velasco, Pinkava 1966-8-22 2557 Orange 1/2 miles south of Dana Point Comment
  RSA214  Eriogonum fasciculatum var. foliolosum J. T. Howell 1927-7-24 474 Orange Santa Ana River bottom near Rancho Santa Ana. 152 Comment
  RSA215  Eriogonum fasciculatum var. foliolosum J. T. Howell 1927-7-24 475 Orange Santa Ana River bottom near Rancho Santa Ana. 152 Comment
  RSA759752  Eriogonum gracile A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37195 Orange Lomas de Santiago, Limestone Canyon, west of Limestone Canyon Rd. 366 Comment
  RSA393245  Eriogonum gracile var. gracile J. T. Howell 1927-7-16 2781 Orange Hills on N side of Santa Ana Canyon. 152 Comment
  RSA0061164  Eriogonum nudum subsp. pauciflorum Robt. Allen 2007-8-11 s.n. Orange NW-facing slope of Santiago Peak, along Main Divide Road. 1701 Comment
  POM18087  Eriogonum nudum var. pauciflorum P. A. Munz 1923-9-7 7750 Orange Santiago Peak, Santa Ana Mountains. 1646 Comment
  CAS-BOT-BC297327  Eriophyllum confertiflorum L. M. Booth 1932-5-12 1042 Orange Newport Bay Comment
  HSC5621  Eriophyllum confertiflorum T. L. Ackerman 1964-3-28 17 Orange Irvine Park Dr. inside Irvine Park Comment
  POM357959  Eriophyllum confertiflorum E. A. McGregor 1964-4-4 s.n. Orange On Hwy 74, between Elsinor & Capistrano. 915 Comment
  IRVC15140  Eriophyllum confertiflorum var. confertiflorum A. S. Boughey 1968-7-9 380403 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  RSA657739  Eriophyllum confertiflorum var. confertiflorum Ken Greby 1985-5-17 29 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
  RSA703721  Erodium brachycarpum D. E. Bramlet 2003-3-20 3351 Orange Donna O Neill Reserve. NE corner of the reserve 183m west of Cristianitos Rd. and 1.83 km north of the E-W access road. 127 Comment
  HSC8494  Erodium cicutarium J. W. Johnson 1961-3-29 Orange Newport Beach, along upper Newport Bay Comment
  RSA684304  Erodium moschatum Fred M. Roberts, David E. Bramlet 2003-3-13 5602 Orange Donna O Neill Land Conservancy: Flagpole Meadow, upper Shady Cyn. W of Cristianitos Canyon, 1,500m NW Sycamore Gate and 1,220m W Cristianitos Rd. 173 Comment
  RSA184106  Erodium moschatum I. L. Wiggins 1966-3-2 20486 Orange Fallow field near corner of Carolina Ave. and Imperial Hwy, E of Brea. Comment
  UCR104608  Eschscholzia californica B. G. Pitzer 1996-4-30 2759 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  CAS-BOT-BC402924  Eschscholzia californica Agnes M. Bowman 1899-5-1 s.n. Orange Orange Comment
  UCSB18078  Eschscholzia californica Shaw, Merrilee 1963-4-10 Orange Fernlead Drive, at intersection with Bayshore Drive, 1/2 mile S of U.S. Highway 101, Corona del Mar 24 Comment
  RSA16421  Eschscholzia californica var. peninsularis Percy C. Everett 1935-5-19 6873 Orange Santa Ana Mts, Baker Canyon, W Ladd Truck Trail 305 Comment
  RSA312  Eschscholzia californica var. peninsularis J. T. Howell 1927-6-22 194 Orange Botany Garden, Rancho Santa Ana. Comment
  RSA548864  Eschscholzia californica var. peninsularis Fred M. Roberts, Carol A. Roberts 1988-6-2 4032 Orange Santa Ana Mtns: Silverado Canyon, Maple Springs Truck Trail, 4.3km above gate. 1.0 km WSW Bald Peak. 817 Comment
  UCR210361  Eucalyptus camaldulensis T. B. Salvato, Billy Deane 2006-10-16 1928 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  UCR237926  Eucalyptus camaldulensis Mark A. Elvin 2003-2-2 2280 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  CDA23092  Eucalyptus utilis Mark A. Elvin, D. G. Kelch 2006-12-9 5305 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  RSA704833  Eucrypta chrysanthemifolia Unspecified s.n. Orange Modjeska s Home. Comment
  RSA732059  Eucrypta chrysanthemifolia A. C. Sanders, Fred M. Roberts 2008-4-8 34750 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  RSA749485  Eucrypta chrysanthemifolia Fred M. Roberts 2008-3-25 6793 Orange Loma Ridge: Upper Hicks Cyn. near Haul Road, c.a. 4.4 km by road from Portola Pkwy. and 3.2 km ENE Rattlesnake Cyn. Reservoir. 269 Comment
  SEINET7073420  Eucrypta chrysanthemifolia var. chrysanthemifolia A. G. Vestal 1963-4-24 s.n. Orange La Paz Canyon, Rancho Mission Viejo. Coordinate datum: NAD27. Comment
  UC537165  Eucrypta chrysanthemifolia var. chrysanthemifolia L. M. Booth 1932-5-19 1063 Orange Newport Beach Comment
  UCR86018  Euphorbia Scott D. White 1992-11-24 974 Orange Vicintiy of Brea, immediately north of Carbon Canyon Road & east of Placentia Ave. 1 mi (airline) S/SE of Tonner Canyon. 183 Comment
  SD220055  Euphorbia albomarginata Mark A. Elvin 2004-5-2 3428 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW UC Irvine campus center. 3 Comment
  RSA542541  Euphorbia lathyris Fred M. Roberts, William L. Smith 1988-7-30 4126 Orange San Juan Capistrano: Horno creek, Marbella country club, just east of Rancho Viejo road.. 0.8 km NE Mission San Juan Capistrano. 43 Comment
  LA204852  Euphorbia misera Dave Dunn; 1932-7-28 7708 Orange Corona del Mar Comment
  POM11888  Euphorbia misera P. A. Munz s.n. Orange Three Arches; Laguna Beach Comment
  RSA0073646  Euphorbia misera Fred M. Roberts 2010-3-12 7175 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
  RSA432  Euphorbia misera J. T. Howell 1928-6-24 992 Orange Between Laguna and Capistrano Beaches Comment
  SD248410  Euphorbia misera R. E. Riefner Jr. 2013-1-16 13 16 Orange City of Newort Beach, vicinity of Poppy Ave., and Ocean Blvd., coastal bluff at Little Corona Beach. 3 Comment
  UCD54364  Euphorbia misera Grady L. Webster 1966-12-11 7479 Orange ocean bluffs at Dana Point. Comment
  UCR246484  Euphorbia misera R. E. Riefner Jr. 2013-1-16 13- 516 Orange South Coast, city of Newport Beach, vicinity of Poppy Ave. and Ocean Blvd., coastal bluff at Little Corona Beach 6 Comment
  RSA599182  Euphorbia peplus Scott D. White 1997-3-28 4849 Orange Above Modjeska Canyon, proposed water tank site. 425 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
  SEINET3089588 Image available Euphorbia peplus J. Harry Lehr 1974-5-26 1245 Orange Corner State College Blvd. & Balsam St. 30 Comment
  RSA562743  Euphorbia peplus Steve Boyd, T. S. Ross 1992-5-19 7439 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
  RSA697596  Euphorbia polycarpa Minor Warne 1934-5-19 s.n. Orange Trabuco. 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
  RSA70544  Euphorbia spathulata F. W. Peirson 1922-5-18 3060 Orange Santa Ana River. 122 Comment
  RSA234503  Euthamia occidentalis James Henrickson 1970-9-5 5343 Orange 3 miles NW of Huntinton Beach; NW of Bolsa Chica Salt Marsh. Sea level. 0 Comment
  CAS-BOT-BC459215  Euthamia occidentalis John Thomas Howell 1927-10-22 3167 Orange Santa Ana River bottom, Sana Ana Canyon 152 Comment
  UCR207527  Festuca microstachys O. F. Clarke 2006-5-6 s.n. Orange Peninsular Range; Santa Ana Mtns., Coal Canyon 305 Comment
  UCSB47952  Festuca microstachys Roberts, D. 1980-5-3 Orange 2.0 km West Trabuco peak (on Main divide Truck trail) 125 Comment
  UCR100181  Festuca myuros Scott D. White 1993-3-5 1116 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  CAS-BOT-BC474740  Ficus carica R. E. Riefner, Jr. 2015-8-29 15 -370 Orange City of Rancho Santa Margarita, Trabuco Marketplace, Rancho Santa Margarita Blvd. at Plano Trabuco 363 Comment
  RSA0116286  Ficus microcarpa R. E. Riefner Jr. 2015-8-30 15 -377 Orange City of Anaheim, Pearson Park, near center of park, N of North Helena St. and West Cypress St. 45 Comment
  UC2046883  Ficus microcarpa R. E. Riefner Jr. 2014-7-13 14 -222 Orange City of Irvine, S side of Red Hill Ave. bridge E of 405 Freeway north-bound lane. Comment
  UCR267278  Ficus microcarpa R. E. Riefner Jr. 2014-8-8 14- 273 Orange City of Laguna Beach, east side of South Coast Highway near Diamond St. 25 Comment
  UCR114389  Filago arizonica D. E. Bramlet 2000-4-17 2986 Orange Santa Ana Mtns. Region, 1.9 km west of Blind Canyon and 366 m north of Irvine Park, 31 m SW of the MWD access road 268 Comment
  RSA552943  Filago californica Fred M. Roberts, Carol A. Roberts 1989-4-20 4300 Orange Santa Ana Mtns: Upper Lion Canyon along San Juan Trail just south of Blue Jay Campground, 2.5km SE Los Pinos Peak. 980 Comment
  UCR223963  Filago californica Fred M. Roberts 2008-4-9 6853 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
  RSA759156  Foeniculum vulgare A. C. Sanders, Fred M. Roberts 2008-6-17 35458 Orange Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  UCR186684  Foeniculum vulgare T. B. Salvato, Katie Kurtz, Mitch Provance 2006-10-15 1905 Orange South Coast, Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Drive 6 Comment
  UCSB48223  Foeniculum vulgare Roberts, Fred 1981-6-22 Orange Rancho Mission Viejo; Calif. Rte. 74, 5.2 km. ENE San Juan Capistrano by road 100 Comment
  RSA791474  Foeniculum vulgare Keith E. Hoffmaster 1928-1-2 717 Orange Santa Ana. CP3. 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
  CAS-BOT-BC63073  Frangula californica subsp. californica John Thomas Howell 1927-6-26 2605 Orange Claymine Canyon, n. Santa Ana Mts. 457 Comment
  SBBG27470  Frangula californica subsp. cuspidata P. C. Everett 1935-6-18 Orange summit of Santiago Pk 1731 Comment
  RSA391400  Frankenia grandifolia Albert J. Perkins 1923-6-28 s.n. Orange Laguna Beach. Comment
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Jul 15 2013
  IRVC1371  Frankenia salina Dorleene Van Gorden 1965-5-1 s.n. Orange Newport Back Bay Southern Coastal Comment
  JEPS30104  Frankenia salina L. M. Booth 1932-7-27 1324 Orange Comment
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Nov 11 2011
  LA103547  Frankenia salina Barry A. Prigge; 1983-12-17 5530 Orange Santa Ana Marsh and adjacent lowlands, southeasternmost part of oil field just N of Pacific Coast Highway between remnant Santa Ana River channel and dirt road 1 Comment
  SBBG72757  Frankenia salina M. N. Ackley -May-1926 358 Orange Sunset Beach 8 Comment
  UCR130495  Frankenia salina R. E. Riefner Jr. 2002-5-4 02- 95 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  RSA0039582  Franseria bipinnatifida Elbert Benjamine 1929-5-14 240 Orange Sunset Beach. Comment
  POM13826  Fraxinus dipetala P. A. Munz 1922-4-28 5046 Orange Leach Canyon, Santa Ana Mountains 671 Comment
  UC2042136  Fraxinus dipetala R. F. Thorne and C. W. Tilforth, E. W. Lathrop 1977-4-27 49687 Orange Northern Santa Ana Mountains: Sierra Peak. [locality information from field label; note on newspaper 'N slope Pleasant's Pk, 1.5 mi S Beek's Place] Comment
  CDA9402  Fraxinus uhdei D. G. Kelch 2006-12-9 6 .535 Orange Along Newport Back Bay Dr. in side canyon. Comment
  RSA1491  Fritillaria biflora E. R. Johnson 1929-4-11 s.n. Orange Sierra Peak Trail. Comment
  SEINET10492274  Fuchsia hybrida Charlene A. Bennett 1976-7-23 Bennett 452 Orange Cultivated plants collected in the pacific palisades estates of the laguna hills area. 152 Comment
  SEINET10492275  Fuchsia hybrida David B. Dunn 1971-8-13 Dunn 18111 Orange Cultivated plants at costa mesa. Comment
  RSA682913  Galium angustifolium Scott D. White, Amanda Duchardt 2003-5-1 9163 Orange Santa Ana Mountain Foothills: Slopes above west side of Trampas Canyon. 107 Comment
  UCR97812  Galium angustifolium Scott D. White 1997-3-28 4850 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  SBBG119147  Galium angustifolium R. G. Marushia 2004-4-16 18 Orange El Moro Cyn, Crystal Cove State Park, Laguna Beach, S of No Name Ridge Rd in park, downhill from pullout and below closed road to park entrance 61 Comment
  SD119373  Galium angustifolium subsp. angustifolium Reid Moran 1977-6-13 24232 Orange north slope, Willow Canyon, tributary of Laguna Canyon 124 Comment
  UCR227752  Galium angustifolium subsp. angustifolium R. F. Thorne 1963-7-26 32825 Orange Santa Ana Mountains, Cleveland National Forest, [vicinity of road from Beek's Spring to Pleasants Peak], Trabuco District 1159 Comment
  RSA543971  Galium porrigens Steve D. Boyd, Orlando Mistretta 1991-5-9 6202 A Orange Crest of range at Oak Flat, SE of Sierra Peak, just West of Riverside County Line. 793 Comment
  RSA753  Galium porrigens J. T. Howell 1927-6-24 204 Orange Aliso Canyon, Rancho Santa Ana. 274 Comment
  UCR149873  Galium porrigens Scott D. White, Michael Honer 2004-5-17 10390 Orange South Coast, City of Laguna Niguel. Ridges and open slopes directly N of the intersection of Crown Valley Parkway and Pacific Island Dr 183 Comment
  IRVC21234  Garrya flavescens Fred M. Roberts 1984-2-12 1180 Orange Santa Ana Mtns: 0.1km SW of Falcon Group Camp; 2.0km ESE Los Pinos Peak. Peninsular Ranges 1000 Comment
  RSA5291  Garrya flavescens B. D. Stark 1933-1-5 4505 Orange 2 mi. so. of summit of skyline Drive on road along ridge to Santiago Peak. Santa Ana Mts. 1067 Comment
  UC1080593  Garrya flavescens E. K. Balls and P. C. Everett 1957-11-25 22847 Orange 1.1 mi e Silverado 883 Comment
  CAS-BOT-BC402198  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
  IRVC24471  Garrya flavescens var. pallida Fred M. Roberts, R. L. Allen 1986-2-23 2593 Orange Santa Ana Mountains; W of Main Divide Truck Trail; 2.1km E Los Pinos Peak. Peninsular Ranges 1115 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
  CDA25797  Gastridium ventricosum A. C. Sanders, Fred M. Roberts, A. O Neal 2008-5-9 35321 Orange Peninsular Range; Santa Ana Mountains; Weir Canyon, 0.3 mile west of Eastern Transportation Corridor (Highway 241) and 1.45 miles east of south end of Walnut Canyon Reservoir. Comment
  CDA5170  Gaura drummondii Johnson 1939-8-3 5 Orange Brea. 0 Comment
  POM255093  Gaura odorata E. Johnson 1940-8-15 s.n. Orange Kokke estate, I.5 miles north of Placentia. Comment
  UCR64601  Gaura parviflora var. lachnocarpa E. L. Paddock 1943-6-8 12730 Orange Whittier Road, one-fourth mi. west of Puente Street, Brea. Comment
  RSA682592  Geranium carolinianum Scott D. White, Brian Leatherman 1997-5-6 5037 Orange Santa Ana Mts: Santiago Canyon area. Unnamed tributary to Santiago Ck. flowing from the SW, directly west of Pancho Cyn. Lomas de Santiago S 179. 366 Comment
  UCR191442  Geranium carolinianum A. C. Sanders, Fred M. Roberts 2008-4-8 34724 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  UC2014873  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-16 12 -404 Orange City of Dana Point, Dana Point Harbor Drive at Island Way. Comment
  UCD169463  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 Blvd. and 19th Street. 5 Comment
  RSA749296  Gilia achilleifolia Fred M. Roberts, Linda Farley 2008-3-28 6816 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
  RSA139631  Gilia angelensis John Ingram 1960-3-29 269 Orange 1/2 mile below O'Neill Park, Trabuco Canyon. Comment
  RSA610228  Gilia angelensis Fred M. Roberts, Annie Hoecker, Tony Bomkamp 1997-3-29 4989 Orange Rancho Mission Viejo: Canada Gobernadora, east slope, 1.7 km SW Cliff Survey Mark, 1.7 km N Calif. Rte. 74. 122 Comment
  RSA606304  Gilia angelensis Jon E. Keeley 1994-4-5 25269 Orange First year burn, east end of Casper Park S5 (Keeley, 1994) 390 Comment
  SEINET5321189  Gilia angelensis A. G. Vestal, W. P. Vestal 1955-3-24 3460 Orange El Toro; About 5 miles east of El Toro Comment
  UCR129870  Gilia capitata P. A. Munz, L. T. Street, G. Williams 1919-5-3 2628 Orange Santa Ana River Canyon 122 Comment
  RSA749309  Gilia capitata subsp. abrotanifolia Fred M. Roberts 1999-4-22 5195 Orange Lomas de Santiago: ridges between Limestone Cyn. and Santiago Creek wash opposite mouth Williams Cyn., 2.0 km SE Silverado Sch. and 2.2 km NNW Bolero Lookout. 400 Comment
  UCR209351  Gilia capitata subsp. abrotanifolia Fred M. Roberts 2008-4-14 6896 Orange Santa Ana Mountains, Upper Weir Canyon, east fork, 3.1 km eat of Robbers Peak, Irvine Ranch Conservancy 453 Comment
  RSA587866  Githopsis diffusa subsp. candida Fred M. Roberts 1990-5-22 4634 Orange Santa Ana Mountains; Upper Hot Springs canyon, just west of Falcon Group Camp, 1.9km ESE Los Pinos Peak. 994 Comment
  SEINET10849002  Gnaphalium David B. Dunn 1971-8-13 Dunn 18133 Orange Cultivated plants vicinity of Laguna Beach. Comment
  RSA696915  Gnaphalium californicum Minor Warne 1934-4-14 s.n. Orange Laguna Canyon Forks. Comment
  RSA734849  Gnaphalium californicum A. C. Sanders, Mitch Provance 2008-5-20 35411 Orange Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 345 Comment
  RSA731759  Gnaphalium canescens subsp. microcephalum Fred M. Roberts, Sandy Leatherman 2007-11-9 6646 Orange San Juan Canyon along San Juan Creek, within the community of San Juan Hot Springs. 216 Comment
  RSA603364  Gnaphalium leucocephalum Scott D. White 1997-6-12 5342 Orange East of San Juan Capistrano: San Juan Creek beteen Highway 74 bridge and Mission Vieja site, i.e. ca. 2 - 4 miles E of I-15 [Interstate 5] / Highway 74 junction. 46 Comment
  RSA679098  Gnaphalium leucocephalum Fred M. Roberts 2003-7-24 5963 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
  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
  RSA710409  Gnaphalium luteoalbum Fred M. Roberts 2005-10-3 6297 Orange San Juan Capistrano: San Juan Creek wash, La Novia Road Bridge to 100m E of bridge, 1.4km E Mission San Juan Capistrano, 27 Comment
  RSA39325  Gnaphalium palustre E. L. Paddock 1943-5-29 12746 Orange S Deodar, 1/2 mile E of Pomona Brea. 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
  IRVC24748  Gnaphalium stramineum Fred M. Roberts 1986-4-29 2818 Orange Turtle Rock, above corner of Ridgerout Dr. and Turtle Rock Dr., 1.1km SE French Hill, Irvine 141 Comment
  IRVC26733  Grindelia Mark A. Elvin 2004-6-18 3522 Orange UCI Arboretum Southern Coastal 15 Comment
  UCR193056  Grindelia camporum A. C. Sanders, Fred M. Roberts 2008-6-17 35506 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, Windy Ridge Rd., saddle on ridge at head, above the Eastern Transportation Corridor 400 Comment
  CAS-BOT-BC123700  Grindelia camporum var. bracteosa John Thomas Howell 1927-7-16 2786 Orange hills on N side of Santa Ana Canyon 182 Comment
  IRVC742  Grindelia camporum var. bracteosa M. McCartin 1965-5-2 Orange San Juan Capistrano. Southern Coastal Comment
  IRVC745  Grindelia camporum var. bracteosa M. Savage 1965-4-2 Orange Corona del Mar, across from Irvine Terrace. Newport Beach Comment
  RSA1565  Grindelia camporum var. bracteosa J. T. Howell 1928-7-10 1093 Orange Trabucco Canyon, Santa Ana Mountains. 457 Comment
  RSA202179  Grindelia camporum var. bracteosa L. M. Booth 1932-5-24 1092 Orange Newport Bay, Public Golf Course. Comment
  RSA234515  Grindelia camporum var. bracteosa James Henrickson 1970-7-24 4962 Orange 1.5 miles NW of Huntington Beach, along border of Bolsa Chica Salt Marsh at SW end of Huntington Beach Mesa. 8 Comment
  UCR119299  Grindelia camporum var. bracteosa R. E. Riefner Jr. 2000-7-8 20- 626 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, on ridgetop overlooking W fork of Fremont Canyon, east of Main Divide Road along the powerline 396 Comment
  CAS-BOT-BC305203  Grindelia hirsutula J. T. Howell 1931-6-1 6624 Orange San Clemente Comment
  CAS-BOT-BC305204  Grindelia hirsutula LeRoy Abrams 1903-4-19 3273 Orange Near the coast at Capistrano Comment
  JEPS41904  Grindelia hirsutula L. M. Booth 1932-5-24 1092 Orange Newport Bay Comment
  UC536899  Grindelia hirsutula Lawrence M. Booth 1932-5-24 1092 Orange Newport Bay Comment
  UCR46575  Gutierrezia bracteata B. G. Pitzer 1986-10-21 0346 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, c. 10 mi east of Santa Ana, in hills N and east of South Coast Gun Club on Jeffrey Road in Hicks Canyon 183 Comment
  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
  UCR192102  Gutierrezia californica A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35288 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 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
  UCR195012  Haplopappus menziesii A. C. Sanders, Fred M. Roberts 2008-8-7 35975 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
  UCR26139  Haplopappus menziesii John C. Roos 1949-10-1 4683 Orange South Coast, Doheny Beach 0 Comment
  UCR162346  Haplopappus venetus subsp. furfuraceus Robert DeRuff 2003-11-28 525 Orange Southern Coast, Newport Beach, Upper Newport Back Bay 30 Comment
  RSA0066586  Harpagonella palmeri Fred M. Roberts, Dave Bontrager 1990-4-18 4565 Orange Rancho Mission Viejo: ridge between Christianitos and Gabino Canyons (Riverside Cement Lease Holding), 5.5 km SE Playa Survey Marker. 152 Comment
  NY387959  Hasseanthus elongatus L. Abrams 06 1901 1785 Orange San Joaquin Hills. Comment
  CAS-BOT-BC307267  Hazardia squarrosa var. grindelioides John Thomas Howell 1927-10-22 3160 Orange N. side of Santa Ana Canyon 304 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
  IRVC23184  Hedera canariensis G. Reynolds 1987-7-7 4 Orange Costa Mesa, at corner of Mesa St. and Santa Ana Ave. Comment
  UCR26998  Hedera helix E. W. Lathrop 1966-5-13 6297 Orange Santa Ana Mountains, 5 mi east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest 400 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
  SD42290  Hedypnois cretica C. B. Wolf 1938-5-2 9406 Orange Fullerton, Francis Street, 1200 block, east side in vacant lot 60 Comment
  CDA6459  Hedypnois cretica Margaret Bellue, G. C. Fleischman 1945-5-8 Orange Near Brea, Union Oil Property. 0 Comment
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Aug 18 2010
  RSA0057939  Hedypnois cretica Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49670 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. Comment
  OBI16349  Hedypnois rhagadioloides Carl B. Wolf 1938-5-2 9406 Orange City of Fullerton, Francis St, 1200 Block E side in vacant lot 61 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
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Feb 23 2019
  CAS-BOT-BC305447  Helianthus annuus John Thomas Howell 1927-7-27 2846 Orange In hills on north side of Santa Ana Canyon 152 Comment
  RSA734760  Helianthus annuus A. C. Sanders, Fred M. Roberts 2008-5-6 35217 Orange Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  UCR193063  Helianthus annuus A. C. Sanders, Fred M. Roberts 2008-5-6 35217 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  CAS-BOT-BC305657  Helianthus ciliaris E. Paddock 1942-7-21 11291 Orange Toler Ranch, N. side Ocean Ave., 1/4 mi. W. of La Mirada Rd., LaHabra Comment
  RSA659548  Helianthus gracilentus P. Shirokawa 1998-5-7 14 Orange Cleveland National Forest- Trabuco Ranger District, 0.3 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 808 Comment
  SBBG104036  Helianthus gracilentus B. Pitzer, H. Hemstreet 1992-5-27 1963 Orange Rd 3S04 to Blue Jay Group Cmpgrd, off St Hwy 74, ca. 2 air mi W of El Cariso Cmpgrd Comment
  UC1069469  Helianthus gracilentus A. Lewis 1934-5-1 431 Orange Cleveland National Forest, Elsinore Quadrangle, Los Pinos Pe Comment
  RSA92493  Helianthus nuttallii subsp. parishii F. W. Peirson 1924-10-19 5246 Orange Wintersberg. Comment
  RSA749044  Heliotropium curassavicum A. C. Sanders, Fred M. Roberts 2008-8-7 35983 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 185 Comment
  POM3866  Heliotropium curassavicum var. oculatum Lois Clency 1914-07 s.n. Orange Laguna. Comment
  RSA752718  Heliotropium curassavicum var. oculatum Fred M. Roberts 2009-4-21 7157 Orange Dana Point Headlands: southern cliffs, 0.7 km W Marine Institute at Dana Point Harbor. CNLM Dana Point Preserve. 3 Comment
  RSA77876  Heliotropium curassavicum var. oculatum F. W. Peirson 1924-8-29 5077 Orange 3 miles from Balboa Beach. Comment
  SEINET10802443  Helminthotheca echioides David B. Dunn Dunn 22400 Orange Collected around the condominium-Pacific Island Estates in Laguna Niguel area. 30 Comment
  RSA572919  Hemizonia australis J. Mallory 1993-8-27 6366 -D-01 Orange At. NW portion of Mesa, approximately 10m S of pipes, powerpoles metal building and old water tank, S. of Los Patos Ave, Bolsa Chica Wetlands. Comment
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Sep 4 2013
  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
  RSA627031  Hemizonia fasciculata Scott D. White 1998-5-16 6509 Orange E Coyote Hills, Oil field at NW corner of Bastanchury and State College. 122 Comment
  RSA734120  Hemizonia fasciculata A. C. Sanders 2008-4-29 35142 Orange Peninsular Range;Santa Ana Mtns.: Lomas de Santiago, western end of Loma Ridgeon road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  UCR228802  Hemizonia fasciculata Dick Newell, Don Millar 2011-5-24 167 Orange Peninsular Range; Santa Ana Mtns., above Outdoor Education Center on MWD service road, 1.6 miles NW (311 deg. ) of Irvine Lake dam 244 Comment
  IRVC25435  Hemizonia parryi subsp. australis Fred M. Roberts 1987-7-22 3507 Orange San Diego Creek just above Main Street bridge; Irvine 5 Comment
  UCR98232  Hesperocnide tenella B. G. Pitzer 1997-4-15 3138 Orange San Joaquin Hills, Crystal Cove State Park, north of the N end of the City of Laguna Beach. Along Moro Canyon Trail, from beginning to a point c. 1.75 mi. up the canyon. 49 Comment
  RSA786954  Heteromeles arbutifolia Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49621 Orange Santa Ana Mountains: about 1 mile above San Juan Fire Station Comment
  UCR131873  Heteromeles arbutifolia J. Mallory, V. McCoy 1995-6-30 6454- 58 Orange Santa Ana Mountains: S-facing slope on Windy Ridge, c. 2.5 mi. south of 91 fwy. Comment
  UCR239808  Heteromeles arbutifolia O. F. Clarke 2004-6-23 s.n. Orange South Coast, Newport Back Bay, just south of the Muth Interpretive Center 15 Comment
  UCSB47998  Heteromeles arbutifolia Roberts, Fred 1980-7-7 Orange Santa Ana Mtns., San Juan Canyon, Hwy 74, 2.4km ENE San Juan Guard Station; 0.3km W Bench Mark 1100 345 Comment
  SEINET2052420 Image available Heterotheca grandiflora Cesareo Perez 1971-5-12 Orange Huntington State Beach, Pacific Coast Highway at Brookhurst, Huntington Beach. Comment
  UC1543194  Heterotheca grandiflora Donald G. Nelson 1935-3-23 186 Orange sand pit near dump just s E. Orangethorpe Ave.; East Fullerton Comment
  UCD150987  Heterotheca grandiflora D. S. Park 2010-4-25 32 -2 Orange Whiting Ranch Wilderness Park, along trail. 226 Comment
  SD113060  Heterotheca grandiflora Darley F. Howe 1971-10-25 4791 Orange Near corner of Brookhurst and Lincoln Ave., Anaheim. Comment
  UCR250865  Heterotheca sessiliflora Dick Newell, Don Millar 2014-4-29 368 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon wash 0.5 mi. above lower gate at 241 Toll Rd. 257 Comment
  POM47593  Heterotheca sessiliflora subsp. echioides I. M. Johnston 1924-8-29 s.n. Orange 2.5 miles north of Balboa. Comment
  RSA542439  Heterotheca sessiliflora subsp. echioides Fred M. Roberts, K. Keane 1988-5-25 3993 Orange Rancho Mission Viejo: Lower Canada Chiquita, 1.9km SSE Medium Rancho Survey Mark, UTM 3710800m N, 443500m E 90 Comment
  SEINET10813378  Heterotheca subaxillaris David B. Dunn 1971-8-13 Dunn 18130 Orange Cultivated plants vicinity of Laguna Beach, CA. Comment
  UCR80248  Hibiscus trionum E. L. Paddock 1941-9-8 s.n. Orange L.J. Vejar Ranch east of Yorba Linda Comment
  RSA751403  Hieracium argutum R. E. Riefner Jr. 2008-6-3 08 -136 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 641 Comment
  CAS-BOT-BC55402  Hirschfeldia incana Ira L. Wiggins 1966-3-22 20556 Orange Floor of Silverado Canyon about 0.5 mile below entrance to Cleveland National Forest. Comment
  RSA38433  Hoffmannseggia glauca E. L. Paddock 1946-6-14 11519 Orange Rancho Santa Ana, along AT & SF Ry., above old pear orchard. Area of approximately 100 sq. ft. 121 Comment
  CAS-BOT-BC207960  Hoffmannseggia glauca Margaret K. Bellue 1933-6-7 s.n. Orange Unspecified Comment
  RSA416  Hoita macrostachya J. T. Howell 1928-7-6 1029 A Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  UCD169748  Hoita macrostachya R. 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 San Juan Creek. 1859 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
  RSA798596  Holodiscus boursieri Robert F. Thorne, E. W. Lathrop 1977-5-18 49749 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  POM244252  Holodiscus discolor Percy C. Everett 1935-6-18 7221 Orange Santa Ana Mts: Summit of Santiago Peak. 1732 Comment
  POM205098  Hordeum brachyantherum subsp. californicum H. M. Hall 1902-05 3285 Orange Santa Ana River 183 Comment
  CAS-BOT-BC285000  Hordeum depressum P. A. Munz 1918-5-5 2192 Orange Laguna Beach Comment
  POM352449  Hordeum depressum Anonymous 1914-7-5 s.n. Orange Newport Bay Comment
  RSA0127605  Hordeum intercedens Fred M. Roberts 2016-3-25 8035 Orange San Joaquin Hills: Bommer Canyon, west slope above Nature Loop Trail, 0.3 km SW Cattle Camp and 1.6 km NE summit of Signal Peak. 157 Comment
  RSA592063  Hordeum intercedens R. E. Riefner 1996-5-19 96 -94 Orange NW of Cooks Reservoir, City of Dana Point, Dana Hills. Comment
  RSA642525  Hordeum intercedens D. E. Bramlet, Sandy Leatherman 1998-5-21 2624 Orange Adjacent to ridgeline road 122m north of the Segunda Deshecha Canada access road (Tleaga Valley Dr.) And 152m west of Wilson Camp Road. 2.68km northeast of Avenida Pico and 1.52 km west of Cristianitos Canyon., San Clemente 7.5 USGS Quadrangle. T8S R7W NW 1/4 of the NE 1/4 of Section 14. UTM 11S 04 114mE X 37 04 708mN. 219 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
  RSA799617  Hordeum intercedens Justin M. Wood 2011-4-12 3652 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  UCR150377  Hordeum intercedens D. E. Bramlet 1998-5-19 2621 Orange Coastal Plains & Basins/Los Angeles Basin region, San Juan Hills: 4400 ft west of La Pata Ave. and 10,000 ft N of Prima Deshecha Canada. A ridgeline 500 ft east of a small canyon 91 Comment
  UCR158162  Hordeum intercedens Adrian Wolf, David Charlton 1998-5-4 197 Orange South Coast, Coastal Hills, Aliso/Woods Canyon Regional Park, Aliso Canyon 0.75 km SW of Woods Canyon, 2.25 km NNW of Aliso Water Treatment Plant, north of access road 30 Comment
  UCR158169  Hordeum intercedens Adrian Wolf 1998-4-20 111 Orange Santa Ana Mtns., lower Limestone Canyon near Irvine Lake, 3 km SE of Irvine Lake dam, north of Santiago Canyon Rd. 287 Comment
  JEPS71234  Hordeum marinum subsp. gussoneanum L. M. Booth 1932-5-12 1013 Orange Newport Bay Comment
  UCR102009  Hordeum murinum B. G. Pitzer 1997-3-25 3002 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  UCR37805  Horkelia cuneata subsp. cuneata 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
  UCR256940  Horkelia cuneata var. puberula Naomi Fraga, Duncan S. Bell 2009-5-11 2720 Orange Peninsular Range; Santa Ana Mountains, Chiquita Trail, Lion Canyon 762 Comment
  CAS-BOT-BC539350  Hypericum canariense R. E. Riefner, Jr. 2010-6-9 10 -56 Orange City of San Juan Capistrano, La Novio Ave. at Valle Rd. 45 Comment
  OBI74741  Hypericum canariense Unknown 2010-6-9 Oct- 52 Orange City of San Juan Capistrano, along McKraken View Trl at San Juan Crk rd, E of I-5 fwy 51 Comment
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May 28 2015
  SD260970  Hypericum canariense R. E. Jr. Riefner 2010-6-9 10 56 Orange City of San Juan Capistrano, La Novia Ave. at Valle Rd. 45 Comment
  IRVC14741  Hypochaeris glabra A. S. Boughey 1968-4-23 205 Orange Black Star Canyon, .5mi below Hidden Ranch; area burned this winter. Santa Ana Mountains Comment
  UCR191464  Hypochaeris glabra A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34650 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
  UCR188940  Ipomoea cairica Robert DeRuff 2006-1 567 Orange Newport Beach, Upper Newport Bay, Back Bay Drive, lower bluff between 23rd Street and Mariners Drive 5 Comment
  IRVC992  Ipomoea purpurea B. Van Gorden 1965-3-8 Orange 2212 Meyer Place. Costa Mesa Comment
  RSA799949  Isocoma menziesii D. M. Ray 2011-1-19 2 Orange South Coast: Santa Ana River: along right of way road just west of Least Tern Island. 0 Comment
  UCR247911  Isocoma menziesii var. menziesii Fred M. Roberts 2012-9-6 7694 Orange SAN JOAQUIN HILLS: Buck Gully, Buck Gully Trail, west end near Poppy Street entrance, 2.1 km WNW Pelican Hill summit. 37 Comment
  UCR223956  Isocoma menziesii var. sedoides Fred M. Roberts 2008-10-9 7123 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve, base of cliff adjacent to Dana Strands Beach, 0.8 km west northwest of Marine Institute, Dana Point Harbor 3 Comment
  CAS-BOT-BC311732  Isocoma menziesii var. vernonioides L. R. A. 1901-6-1 1783 Orange San Joaquin Hills Comment
  POM294112  Isocoma menziesii var. vernonioides Lyman Benson 1946-7-8 12105 Orange Corona del Mar. 15 Comment
  RSA890  Isocoma menziesii var. vernonioides J. T. Howell 1927-10-29 785 Orange Bryant Ranch near Long Beach. 15 Comment
  RSA697044  Isocoma veneta var. vernonioides Keith E. Hoffmaster 1927-10-9 s.n. Orange Santa Ana. Comment
  CAS-BOT-BC112424  Isolepis cernua John Thomas Howell 1927-7-19 2799 Orange Moist shady situation, Santa Ana River bottom, Santa Ana Canyon. 152 Comment
  CAS-BOT-BC112434  Isolepis cernua Mark A. Elvin; D. Kelch 2006-12-9 5302 Orange Southern Coastal: Newport Backbay, Big Canyon, lower end. 3 Comment
  IRVC9274  Isomeris arborea B. T. Gittins 1963-5-24 247248 Orange Newport Bay, beside road near salt ponds. Newport Beach Comment
  JEPS42708  Isomeris arborea L. M. Booth 1932-5-12 1045 Orange Newport Bay Comment
  CAS-BOT-BC324739  Iva axillaris Carl B. Wolf 1932-6-28 3804 Orange Bryant Ranch, edge of field on Bixy Ave. 228 Comment
  RSA39344  Iva axillaris subsp. robustior E. L. Paddock 1943-6-16 12732 Orange Santa Fe Railway 0.25 mile W of Esperanza Station Grounds (opposite Ernest Yorba property). Comment
  UC729954  Iva axillaris subsp. robustior Carl B. Wolf 1932-6-28 3804 Orange edge of field Bixby Ave; Bryant Ranch 228 Comment
  CLARK-A1528-1975  Jaumea carnosa John C. Roos 1949-10-1 4682 Orange Doheney Beach Comment
  POM361340  Jaumea carnosa F. R. Fosberg 1930-7-10 3180 Orange Anaheim Landing. [Los Angeles Co. on label] 1 Comment
  POM361345  Jaumea carnosa L. C. Wheeler 1932-6-22 846 Orange Newport Bay, Orange County Comment
  UCR66998  Jaumea carnosa A. C. Sanders 1990-10-6 10182 Orange South Coast, Newport Back Bay, SW side at North Star County Beach, SW end of the bay, c. 2 km inland from Hwy 1/ Pacific Coast Hwy 3 Comment
  POM122693  Jepsonia parryi Marcus E. Jones 1926-3-13 s.n. Orange Santa Ana Canyon. Comment
  CAS-BOT-BC101920  Juglans californica Ira L. Wiggins 1966-5-11 20660 Orange Carbon Canyon, about 1 mile above its mouth Comment
  HSC13962  Juglans californica S. M. Clapp 1966-4-10 39 Orange 1 mi. N of Brea, on Brea Canyon Rd. 61 Comment
  UCR229282  Juglans californica R. E. Riefner Jr. 2011-8-25 11- 113 Orange Trabuco Canyon, Trabuco Canyon Road c. 1 mi northwest of O'Neill Regional Park 319 Comment
  RSA791495  Juglans californica Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49613 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station Comment
  SEINET13942199 Image available Juglans californica B. D. Stark 1933-1 5553 Orange Rancho Santa Ana, Santa Ana Canyon, along irrigation canal 100 yds E of school, upper sonoran life zone, prop. Number 2048. 400 ft. 122 Comment
  SEINET13942201 Image available Juglans californica Kay Raeder 1955-1 492 Orange Flying Cow Ranch, San Jose Hills Mt. Range, Pacific Coast drainage area, north slope. 850 ft. 259 Comment
  CAS-BOT-BC229009  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
  CAS-BOT-BC334208  Juglans hindsii R. E. Riefner, Jr. 2013-11-6 13 -233 Orange City of Laguna Beach, Laguna Canyon, N of Phillips St. on E side of Laguna Canyon Rd. 71 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
  UCD169185  Juglans hindsii R. E. Riefner Jr. 2013-11-6 13- 234 Orange City of Laguna Beach, Laguna Canyon. N of Phillips St. on E side of Laguna Canyon Rd. 71 Comment
  SBBG128386  Juglans hindsii R. E. Riefner Jr. 2010-9-8 10 -121 Orange Laguna Cyn, ca. 0.15 mi S of El Toro Rd on E side of Laguna Cyn Rd; Laguna Beach 75 Comment
  CAS-BOT-BC110028  Juncus acutus Frank W. Gould 1944-4-30 2330 Orange 2 miles southwest of Huntington Beach. Comment
  UCR207558  Juncus acutus O. F. Clarke 2004-6-23 s.n. Orange South Coast, Newport Back Bay, just south of the Muth Interpretive Center 15 Comment
  IRVC29826  Juncus acutus subsp. leopoldii Artie Thomas, Mark A. Elvin 2006-9-23 609238 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
  JEPS66901  Juncus acutus subsp. leopoldii Lawrence M. Booth 1932-5-24 1102 Orange Newport Bay Comment
  RSA614279  Juncus acutus subsp. leopoldii L. C. Wheeler 1932-6-25 869 Orange Newport Bay: Inland arm of.. Sea level. Comment
  UCSB36209  Juncus acutus subsp. leopoldii Ferren, Wayne; Whitmore, S.; Millett, B. 1980-8-27 Orange Newport Backbay just W of Backbay Drive; ca. 3 km V NE of Rt. 1; Newport Beach Comment
  UCR193797  Juncus balticus A. C. Sanders, Fred M. Roberts 2008-7-3 35706 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
  RSA22445  Juncus bufonius Alice Eastwood, John Thomas Howell 1937-4-24 3933 Orange Dana Point. Comment
  RSA734632  Juncus bufonius var. congestus A. C. Sanders, T. B. Salvato 2008-5-13 35381 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  POM202728  Juncus mexicanus L. M. Booth 1932-6-4 1153 Orange Newport Lagoon. Comment
  RSA50307  Juncus phaeocephalus var. paniculatus E. K. Balls 1949-6-6 13467 -A Orange [Rancho Santa Ana] Botanic Garden, Santa Ana River Canyon. 198 Comment
  UCR193074  Juncus rugulosus A. C. Sanders, Mitch Provance 2008-5-20 35424 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  UCR193071  Juncus sphaerocarpus A. C. Sanders, Mitch Provance 2008-5-20 35421 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  RSA542335  Juncus xiphioides Fred M. Roberts, K. Keane 1988-5-25 3985 Orange Ranch Mission Viejo: Lower Canada Chiquita, 2.5 kilometers SSE Medium Rancho Survey Mark. 82 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
  UCSB48006  Juncus xiphioides Roberts, Fred 1980-7-11 Orange Santa Ana Mtns; Viejo Canyon; 3.0 km ENE San Juan Guard Station; 0.7 km N Hwy 74 355 Comment
  RSA21231  Juniperus californica E. R. Johnson 1937-3-28 8502 Orange 4 9/10 mi. E. of San Juan Capistrano on No. side of Ortega Highway. Comment
  RSA683839  Juniperus californica Scott D. White, Michael Honer 2003-5-29 9422 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
  IRVC18335  Juniperus monosperma Karlin G. Marsh Apr 1980 s.n. Orange Ca. 1mi. E of San Juan Creek in tributary drainage, E of intersection at Prima Deushecha Dump Rd. & Ortega Hwy. Rancho Mission Viejo Comment
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Apr 2 2014
  POM4196  Keckiella antirrhinoides I. M. Johnston 1918-5-26 s.n. Orange Hills south of Ontario 1 mile west of Santa Ana Canon.. 366 Comment
  RSA5279  Keckiella antirrhinoides B. D. Stark 1932-12-15 1701 Orange Rancho Santa Ana, slope above grove #4. 145 Comment
  UCR234140  Keckiella antirrhinoides Dick Newell, Judy Booth 2012-4-6 244 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road at Mountain View Trail, Cleveland National Forest 610 Comment
  UCR50731  Keckiella antirrhinoides Steve Hampson 1988-5-12 s.n Orange Santa Ana Mtns, Harding Canyon above Modjeska Reservoir. Streamside 488 Comment
  RSA789586  Keckiella antirrhinoides subsp. antirrhinoides Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49658 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] Comment
  SD247733  Keckiella antirrhinoides var. antirrhinoides R. F. Thorne, C. W. Tilforth, E. W. Lathrop. 1977-4-27 49658 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] Comment
  RSA542499  Keckiella cordifolia Fred M. Roberts, Karlin G. Marsh 1988-4-25 3935 Orange San Joaquin Hills: Los Trancos Canyon, 0.8 kilometer SE Pelican Hill. 81 Comment
  POM18123  Keckiella ternata subsp. ternata Philip A. Munz 1923-9-7 7743 Orange Santiago Peak. 1524 Comment
  RSA761792  Keckiella ternata subsp. ternata Robert Allen 2003-6-22 12294 Orange Northeastern flank of Santiago Peak, along North Main Divide Road. 1506 Comment
  RSA696161  Lactuca scariola Keith E. Hoffmaster 1927-10 s.n. Orange Santa Ana Comment
  CAS-BOT-BC340501  Lactuca serriola John Thomas Howell 1927-7-27 2855 Orange Hills on n. side of Santa Ana Canon [Canyon] 152 Comment
  CAS-BOT-BC413811  Lagunaria patersonia R. E. Riefner, Jr. 2014-6-25 14 -209 Orange City of Laguna Beach, Shaw's Cove, north of Cliff Dr. and Fairview St. 3 Comment
  CAS-BOT-BC516763  Lagunaria patersonia R. E. Riefner, Jr. 2011-6-29 11 -76 Orange City of Laguna Beach, general area of Shaw's Cove, vicinity of Cliff Dr. and Fairview St. 1 Comment
  SD220025  Lamarckia aurea Mark A. Elvin 2004-5-2 3427 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW UC Irvine campus center. 3 Comment
  UCR191420  Lamarckia aurea A. C. Sanders, Fred M. Roberts 2008-4-8 34769 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon 495 Comment
  RSA0040039  Lantana camara Anonymous 1933-10-13 s.n. Orange Santa Ana. Comment
  HSC5147  Lasthenia californica S. M. Clapp 1966-4-10 46 Orange 10 mi. into Black Star Canyon, near the summit 244 Comment
  IRVC19035  Lasthenia californica T. Ackerman 1982-4-24 82 -261 Orange south of Live Oak Canyon Rd., trail road from Methodist Church. Santa Ana Mountains Comment
  RSA0013588  Lasthenia coronaria D. E. Bramlet 2008-4-15 4179 Orange Ridgeline 374m N of Hicks Cyn. Haul Rd. & 335m E of the Asphalt Plant 195 Comment
  RSA796  Lasthenia coronaria J. T. Howell 1928-2-25 850 Orange Nolina Canyon, Rancho Santa Ana. 152 Comment
  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-BC329175  Lasthenia glabrata subsp. coulteri Carl B. Wolf 1935-3-24 6295 Orange 1 mi N of Buena Park (valley to W of W. Coyote Hills) 53 Comment
  RSA0013584  Lasthenia glabrata subsp. coulteri D. E. Bramlet 2008-4-3 4150 Orange Bee Cyn. Bowerman landfill site. 1.1km south of the Bee Cyn. access road & 35m west of the active landfill, on grade fill slope. Comment
  UCSB69273  Lasthenia glabrata subsp. glabrata Sanders, A.; Roberts, Fred 2008-3-25 Orange Peninsular Range; Santa Ana Mtns.; saddle on ridge near head of Weid Canyon, 5.3 miles ENE of Villa Park, 3.1 mi. N of (Santiago Reservoir) Irvine Lake (Black Star Canyon 7.5' Q.; +/-1000m.) 405 Comment
  UC2061417  Lasthenia gracilis Rachael L. Olliff Yang with Alice J. Olliff 2017-3-30 13 Orange UC Irvine Ecological Reserve, about 100 m West of Los Trancos Drive, along the trail. Comment
  UC891317  Lasthenia gracilis I. W. Clokey 1932-3-1 5325 Orange Sugar Loaf below Arch Beach Comment
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Nov 2 2011
  UCSB9449  Lasthenia gracilis Lloyd, Robert 1959-4-17 Orange 10 miles south of West Corona on the Oak Flats Fire Road; Santa Ana Mt. Range; Pacific Ocean Drainage Area 792 Comment
  SFV16517  Lathyrus hirsutus S. Mason, P. Rector 1993-4-16 s. n. Orange Santa Ana Mountains CA State Highway 74 at Lower San Juan Campground. Adjacent to campground sign on southeast side of road. 396 Comment
  SEINET956187  Lathyrus strictus P. C. Everett 1935-1 6292 Orange Santa Ana Mts. Baker Canyon, West Ladd Truck Trail. 1000 Comment
  IRVC21512  Lathyrus tingitanus T. W. Mulroy 1973-5-21 1866 Orange San Juan Canyon, Hwy 74, ca. 3.2km E San Juan Guard Station. Santa Ana Mountains 315 Comment
  JEPS57259  Lathyrus tingitanus L. R. Heckard and R. C. Bacigalupi 1968-5-8 1837 Orange just n of Doheny Beach Park (Dana Point); Dana Point Comment
  RSA90347  Lathyrus vestitus subsp. alefeldii F. W. Peirson 1925-4-11 5731 Orange slope above mill, in Silverado Canyon, Santa Ana Mountains 914 Comment
  RSA35462  Lavatera assurgentiflora subsp. assurgentiflora Emily M. Bradford 1904-3-6 s.n. Orange Ocean Park Comment
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Sep 13 2013
  CAS-BOT-BC380860  Layia platyglossa P. C. Everett 1935-4-15 2349 Orange Atwood, 0.8 miles e. of Atwood on the south side of santa Fe R.R. 106 Comment
  RSA699675  Layia platyglossa Keith E. Hoffmaster 1935-4-19 s.n. Orange Santiago can. near Silverado ca., Santa Ana Mountains. 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
  RSA98  Lemna valdiviana J. T. Howell 1927-7-21 450 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  UCR203897  Lepechinia cardiophylla R. E. Riefner Jr. 2008-3-21 08- 59 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, west Fremont Canyon, Windy Ridge south to west fork canyon 463 Comment
  UCR237830  Lepidium Mark A. Elvin 2003-2-2 2263 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  CAS-BOT-BC89524  Lepidium lasiocarpum L. R. Abrams 1917-6-23 6569 Orange Balboa. Comment
  POM183942  Lepidium lasiocarpum P. A. Munz 1932-3-29 12191 Orange Costa Mesa. Comment
  RSA326  Lepidium lasiocarpum J. T. Howell 1928-2-26 859 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA4827  Lepidium lasiocarpum 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
  UC450973  Lepidium lasiocarpum var. lasiocarpum Fay A. MacFadden 1931-3-1 2925 Orange Laguna Beach Comment
  UCR203975  Lepidium nitidum D. E. Bramlet, Weena Sangkatavat 2008-3-27 4131 Orange Peninsular Range; Santa Ana Mountains, Bee Canyon, Bowerman landfill site. 528m south of the Bee Canyon access road and 440m west of the active landfill 270 Comment
  RSA697453  Lepidium nitidum Pomeroy 1929-2-23 79 Orange Near El Toro. Comment
  UCR60664  Lepidium nitidum var. nitidum C. B. Wolf 1932-2-15 02657 Orange Rancho Santa Ana Botanic Garden, above the Rubus beds 183 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
  RSA629716  Lepidium pinnatifidum L. C. Wheeler 1947-5-4 6476 Orange 4 1/2 miles south of Santa Ana: South Main Street extension, 0.8 miles south of Newport Avenue. Comment
  UCSB59357  Lepidium pinnatifidum Roberts, Jr., Fred 1987-7-8 Orange Irvine; San Diego Creek near San Diego Fwy. crossing, 3.2 km. N UC Irvine campus center; UTM 3726200m N, 422500m E 5 Comment
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Nov 17 2018
  RSA328  Lepidium virginicum var. pubescens J. T. Howell 1927-6-21 175 Orange Near ranch houses, Rancho Santa Ana. 152 Comment
  RSA753422  Lepidium virginicum var. robinsonii D. E. Bramlet, Fred Roberts 2008-5-13 4268 Orange Upper Eastern area of Weir Cyn, 446m west of Hwy 241 & 958m N of Weir Cyn Road 381 Comment
  UCD134015  Lepidospartum squamatum J. C. Elmore 1929-10-1 2165 Orange orange. Comment
  RSA725526  Leptochloa fusca subsp. uninervia Fred M. Roberts 2007-9-11 6576 Orange San Juan Capistrano: San Juan Creek at the confluence with Trabuco Creek. 17 Comment
  UC537285  Leptochloa uninervia Lawrence M. Booth 1932-7-18 1262 Orange Costa Mesa Newport Bay Comment
  JEPS69843  Leptodactylon californicum Alice King March, 1908 Orange Santa Ana Comment
  RSA696979  Leptodactylon californicum Keith E. Hoffmaster 1927-4-8 s.n. Orange Santa Ana Mountains Comment
  RSA698316  Leptodactylon californicum Minor Warne 1934-4-7 s.n. Orange Santiago Canyon. Comment
  RSA734967  Leptodactylon californicum A. C. Sanders, Fred M. Roberts, A. O'Neal, D. E. Bramlet 2008-5-9 35302 Orange Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  VVC381  Leptodactylon californicum P. J. MacKay 1990-5-25 xn Orange Peninsular Range, Hwy 74 near San Juan Hot Springs 198 Comment
  POM3492  Leptosiphon androsaceus Crawford s.n. Orange Laguna Mts. 305 Comment
  RSA699631  Leptosiphon floribundus Keith E. Hoffmaster 1934-4-8 s.n. Orange Gypsum can (n. Corona), Santa Ana Mts Comment
Read comments
Dec 11 2011
  CAS-BOT-BC227045  Leptosiphon floribundus subsp. glaber E. R. Johnson 1932-5-1 3703 Orange Santa Ana Mts., along ridge, between Skyline Drive and Santiago Peak 1219 Comment
  RSA550596  Leptosiphon liniflorus Fred M. Roberts 1989-4-26 4318 Orange Mouth of Blind Caynon, 9.4 k SW Sierra Peak, 1.0km N Irvine lake spillway. 219 Comment
  SEINET3915524  Lepturus cylindricus Louis C. Wheeler 1932-6-25 851 Orange 1/2 mile N Newport Bay.; 0 15 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
  RSA401665A  Limonium californicum F. R. Fosberg 1930-7-10 53982 Orange Anaheim Landing. [Now Seal Beach, Orange County. Los Angeles Co. on label] 1 Comment
  RSA0059068  Limonium californicum CNPS Accuracy Assessment Team 2014-7-9 9563 .1 Orange Upper Newport Bay Nature Reserve. Comment
  POM47641  Limonium californicum var. mexicanum I. M. Johnston 1924-8-29 s.n. Orange 2.5 miles north of Balboa. Comment
  UC1873116  Limonium duriusculum R. E. Riefner Jr. 2005-10-5 05 -707 Orange City of Irvine, near Bonita Creek, along La Salud St. near Milano Dr. 9 Comment
  UCR149414  Limonium duriusculum Fred M. Roberts 2000-6-5 5338 Orange Chino Hills, Yorba Linda, along Hidden Hills Dr. near Sunbeam Lane, on ridge above Box Canyon 376 Comment
  UCR219808  Limonium perezii 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
  UC1923253  Limonium preauxii R. E. Riefner Jr. 2008-2-25 8 -25 Orange City of Lake Forest, Lake Forest Blvd. near Ranch Rd. at Serrano Creek 229 Comment
  UCR188997  Limonium ramosissimum Fred M. Roberts 2007-10-29 6623 Orange South Coast, Niguel Hill, Laguna Niguel. Seaview Park, 1.3 km ENE of Aliso Peak 265 Comment
  RSA468571  Linanthus androsaceus Albert J. Perkins 1923-4-27 s.n. Orange Trabuco Canyon. Comment
  CAS-BOT-BC226773  Linanthus californicus B. D. Stark 1931-3-12 1938 Orange West slope of Santa Ana Mts., 3 mi. no. of Modjeska's Home 304 Comment
  CAS-BOT-BC226774  Linanthus californicus B. D. Stark 1931-3-12 1938 Orange West slope of Santa Ana Mts., 3 mi. no. of Modjeska's Home 304 Comment
  LA206679  Linanthus californicus C. B. Wolf; 1931-3-6 1831 Orange 1.5 mi below Trabuco Oaks along Trabuco Canyon road, W slope Santa Ana Mts 304 Comment
  RSA542451  Linanthus californicus Fred M. Roberts 1988-4-8 3892 Orange Lomas de Santiago: Loma Ridge, Central Linestone Canyon, 4.1 kilometers NNW Bolero Lookout. 323 Comment
  RSA468460  Linanthus californicus subsp. glandulosus Claire Kibbe 1936-07 19983 Orange Santa Ana Canyon. Comment
  CLARK-A1528-3471  Linanthus dianthiflorus John C. Roos 1937-2-23 1306 Orange Laguna Beach Comment
  JEPS89271  Linanthus dianthiflorus Rimo Bacigalupi and L. Heckard, P. C. Hutchison 1962-3-16 8233 Orange 2 mi n Doheny Beach State Park (fields above ocean) Comment
  UC729697  Linanthus dianthiflorus Carl B. Wolf 1932-3-8 Orange Santiago Dam, w base of Santa Ana Mts. Santa Ana Mts. 304 Comment
  UCR5212  Linanthus dianthiflorus Barbara T. Gittins, O. F. Clarke 1966-3-19 894 Orange Pacific slope, Irvine Ranch, east of University of California Irvine campus, Newport Beach 91 Comment
  POM279123  Linanthus dianthiflorus subsp. dianthiflorus Lyman Benson 1932-3-26 3192 Orange Dana Point. 60 Comment
  RSA787677  Linanthus floribundus subsp. floribundus R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49714 Orange Santa Ana Mountains: Bedford Truck Trail, ca. 0.8 km below junction with Main Divide Truck Trail Comment
  UCR150920  Linanthus floribundus subsp. floribundus Valerie Soza, LeRoy Gross 1999-6-7 481 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 Comment
  CHSC116475  Linanthus floribundus subsp. floribundus R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49714 Orange Santa Ana Mountains: Bedford Truck Trail, ca. 0.8 km below junction with Main Divide Truck Trail. Comment
  UC729649  Linanthus floribundus subsp. glaber E. R. Johnson May 1932 Orange between Skyline Drive and Santiago Peak; Santa Ana Mts. 1219 Comment
  RSA698102  Liriodendron tulipifera A. Metzgar 1937-03 s.n. Orange Near San Juan Capistrano. Comment
  RSA632420  Lithophragma affine Valerie L. Soza, LeRoy Gross 1999-6-10 521 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road. 1554 Comment
  RSA782058  Lobularia maritima Mark A. Elvin 2003-2-23 2313 Orange Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  RSA662131  Lobularia maritima Daniel Curran 1981-1-23 5 Orange 2733 Boadway, Anaheim. Comment
  SD247596  Logfia filaginoides R. F. Thorne, C. W. Tilforth, E. W Lathrop 1977-4-27 49668 Orange Northern Santa Ana Mountains: Coal Canyon (NW of Sierra Peak). Comment
  CAS-BOT-BC283493  Lolium multiflorum Carl B. Wolf 1932-6-13 3717 Orange Fullerton, Malvern, and Nicholas Avenues 53 Comment
  UC537116  Lolium multiflorum Lawrence M. Booth 1932-5-15 1203 Orange Newport Bay Costa Mesa; Newport Bay Comment
  UC729941  Lolium perenne Carl B. Wolf 1932-6-13 3728 Orange Fullerton; Malvern and Nicholas Avenues 53 Comment
  UCR2522  Lolium perenne F. M. Reed 1927-9-19 5472 Orange Near Peralta Heights 91 Comment
  RSA184121  Lolium perenne I. L. Wiggins 1965-10-24 20290 Orange At corner of Yorba Linda and State College Blvds., Fullerton Comment
  POM202588  Lolium perenne subsp. multiflorum L. M. Booth 1932-5-15 1203 Orange Costa Mesa. Comment
  POM265760  Lolium perenne subsp. multiflorum J. C. Roos 1937-5-10 2077 Orange Tustin Comment
  CLARK-A1528-4720  Lolium temulentum John C. Roos 1937-5-21 2068 Orange Santa Ana Comment
  UCD66669  Lolium temulentum R. M. Love 1942-4-16 9 Orange 8 mi. E of Santa Ana. Comment
  UCR139448  Lolium temulentum E. R. Johnson 1932-5-18 3638 Orange Santa Ana River Canyon, Rancho Santa Ana Botanic Garden, east edge of grain field bordering Rancho 198 Comment
  RSA697738  Lolium temulentum Elisabeth Norland 1929-4-12 s.n. Orange Near Winters burg. Comment
  RSA751165  Lomatium lucidum D. E. Bramlet 2008-5-9 4267 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
  UCR18584  Lomatium lucidum John C. Roos 1960-5-30 s.n. Orange Peninsular Ranges; Santa Ana Mtns, ridge at head of Hagador Canyon 1070 Comment
  RSA753969  Lonicera subspicata A. C. Sanders, Fred M. Roberts 2008-7-16 35858 Orange Lomas de Santiago, upper Hangmans Tree Canyon. 395 Comment
  RSA455383  Lonicera subspicata var. denudata N. C. Cooper 1944-6-4 1338 Orange San Juan Canyon. 305 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
  UC284253  Lonicera subspicata var. denudata P. A. Munz 1923-1-14 7052 Orange Glen Ivy Trail to Santiago Peak; Santa Ana Mts. 1066 Comment
  RSA450859  Lotus argophyllus Gordon Marsh, K. G. Marsh 1977-11-21 s.n. Orange Santa Ana Mts.: N side of Ortega Hwy, near Hwy marker #31, near O.C. Surveyor Bench Mark #3W-24-72. Comment
  RSA542544  Lotus hamatus Fred M. Roberts 1988-4-10 3914 Orange Lomas De Santiago: Loma Ridge, 1.0 kilometer N Bolero Lookout. 415 Comment
  IRVC15129  Lotus heermannii var. heermannii A. S. Boughey 1968-7-9 383 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  RSA0038266  Lotus purshianus J. C. Roos 1981-09 s.n. Orange Dana Point near Doheney Beach. Comment
  RSA681848  Lotus salsuginosus Scott D. White, Michael Honer 2003-6-12 9541 Orange Southwestern Santa Ana Mtn. Foothills: Rancho Mission Viejo. Upper end of Trampas Canyon. 152 Comment
  RSA749302  Lotus salsuginosus Fred M. Roberts 1999-4-21 5181 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
  UCR191238  Lotus salsuginosus A. C. Sanders, Fred M. Roberts 2008-4-22 34988 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
  RSA697977  Lotus scoparius Jeanne Paxton 1934-2-25 s.n. Orange Sugar Loaf Canyon, Arch Beach Comment
  RSA769616  Lotus scoparius E. W. Lathrop 1974-6-27 7415 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  IRVC27497  Lotus scoparius var. scoparius Mark A. Elvin 2004-5-2 3406 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA621861  Lotus scoparius var. scoparius R. S. Woglum 1932-4-16 s.n. Orange Trabuco Canyon, Santa Ana Mountains, Cleveland National Forest Comment
  UCR193542  Lotus scoparius var. scoparius A. C. Sanders, Fred M. Roberts 2008-7-3 35668 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 Comment
  UCR222873  Lotus scoparius var. scoparius T. B. Salvato 2010-10-27 5110 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
  RSA391  Lotus strigosus J. T. Howell 1928-2-25 842 Orange Nolina Canyon, Rancho Santa Ana. 152 Comment
  RSA406321  Lotus strigosus M. B. Dunkle 1933-3-5 3087 Orange San Juan Canyon 304 Comment
  RSA649262  Lotus strigosus T. Pringle 1966-3-22 68 Orange In Silverado Canyon Comment
  UCR103215  Lotus strigosus Scott D. White 1997-2-19 4694 Orange Santa Ana Mtns, above Modjeska Canyon; proposed water tank site 488 Comment
  UCR190969  Lotus strigosus A. C. Sanders, Fred M. Roberts 2008-4-22 35053 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
  UCR191322  Lotus strigosus A. C. Sanders, Fred M. Roberts 2008-4-8 34746 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  IRVC22208  Lotus strigosus var. strigosus Fred M. Roberts, Gordon Marsh 1985-4-3 1623 Orange Irvine: Irvine Ranch, just east of MacArthur, 1.4km W UCI campus center. Southern Coastal 30 Comment
  IRVC24533  Lotus strigosus var. strigosus Fred M. Roberts, Gordon Marsh 1986-2-28 2636 Orange Mission Viejo: N of Oso Parkway; 4.2km NNE Saddleback Community College. Southern Coastal 200 Comment
  IRVC11703  Lotus strigosus var. strigosus R. Yarnell 1966-4-1 121 Orange near CSUF in open field. Fullerton Comment
  RSA697981  Lotus subpinnatus Unspecified s.n. Orange Orange County park Comment
  SEINET3560062 Image available Lotus subpinnatus T. Mosquin, P. H. Raven 1962-5-17 4274 Orange Silverado Canyon, Santa Ana Mts. 701 Comment
  RSA564320  Lotus unifoliolatus B. Pitzer 1992-5-27 1966 Orange Cleveland National Forest. Along road (3S04) to Blue Jay Group Campground, off State Hwy 74 (Ortega Hwy). Approx. 2 mi. (airline) W of El Cariso Campground. 762 Comment
  RSA627762  Lotus unifoliolatus Scott D. White 1998-5-31 6571 Orange UCI Campus; Southwest of Farm School site (now proposed as Student Rec. Ctr.) 24 Comment
  POM201832  Lotus wrangelianus L. M. Booth 1932-5-19 1073 Orange Newport Bay. Comment
  UC537009  Lotus wrangelianus Lawrence M. Booth 1932-5-19 1073 Orange Newport Bay Comment
  UCR266379  Ludwigia D. E. Bramlet 2009-11-20 4426 Orange South Coast, San Diego Creek between Irvine and Newport Back Bay 8 Comment
  UCR239881  Ludwigia peploides O. F. Clarke 2004-5-29 s.n. Orange Santa Ana River Canyon, Santa Ana River on the west side of Featherly Park 110 Comment
  POM201839  Lupinus L. M. Booth 1932-5-19 1072 Orange Newport Bay. Comment
  RSA184076  Lupinus I. L. Wiggins 1966-3-31 20574 Orange Grazed field along south side of Brea Olinda Boulevard, near Carolina Avenue. Comment
  RSA681016  Lupinus bicolor Fred M. Roberts, David E. Bramlet 2003-3-13 5576 Orange Donna O'Neill Land Conservancy: Ridge west of Christianitos Canyon, 1.6 km NW Sycamore Gate. 197 Comment
  UCR97639  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 1997-4-24 1654 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
  IRVC2290  Lupinus bicolor subsp. marginatus C. Weir 1965-5-9 HS 0424 Orange Newport Beach, [Newport] Back Bay. Southern Coastal Comment
  IRVC14829  Lupinus bicolor subsp. microphyllus Gordon A. Marsh, Karlin G. Marsh 1976-4-4 s.n. Orange El Toro: Canada Rd., opposite Rancho Alagre. Southern Coastal Comment
  IRVC22067  Lupinus bicolor subsp. microphyllus Fred M. Roberts 1983-3-16 917 Orange Laguna Beach: Sycamore Hills, central ridge, 1.1km NNE jct. El Toro and Laguna Canyon Rds.; 5.4km [ESE] Signal Peak. Southern Coastal 156 Comment
  POM257036  Lupinus bicolor subsp. tridentatus W. Pequegnat 1940-4-13 s.n. Orange Modjeska Springs, Santa Ana Mts. 1311 Comment
  IRVC2287  Lupinus bicolor subsp. umbellatus McRae 1965-4-8 HS 0426 Orange Costa Mesa Southern Coastal Comment
  RSA542581  Lupinus bicolor subsp. umbellatus Fred M. Roberts 1988-4-10 3904 Orange Lomas De Santiago: Loma Ridge, Upper Limestone Canyon, c.a. 3.2 kilometer NNW Bolero Lookout. 347 Comment
  CAS-BOT-BC216675  Lupinus excubitus subsp. hallii Carl B. Wolf 1932-5-27 2952 Orange 0.75 miles W of Atwood, Just S of Santa Fe RR 91 Comment
  CAS-BOT-BC216692  Lupinus excubitus var. excubitus C. B. Wolf 1931-3-25 1936 Orange 1 mile W of Esperanza, Along the Santa Fe RR, Santa Ana Canyon 106 Comment
  CAS-BOT-BC215310  Lupinus excubitus var. excubitus C. B. Wolf 1931-5-20 2056 Orange Along Santa Fe RR, 1 mile W of Esperanza, Santa Ana Canyon 106 Comment
  SD247648  Lupinus excubitus var. hallii R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49692 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA754066  Lupinus hirsutissimus A. C. Sanders, Fred M. Roberts 2008-7-16 35881 Orange Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 358 Comment
  UC1129484  Lupinus hirsutissimus A. Lewis Mar 1934 373 Orange mouth of Ladd Canyon; Cleveland National Forest, Corona Quad. Comment
  RSA413751  Lupinus latifolius subsp. parishii N. C. Cooper 1944-6-4 1336 Orange San Juan Canyon. 549 Comment
  RSA699740  Lupinus latifolius subsp. parishii Keith E. Hoffmaster 1936-5-3 s.n. Orange Santa Ana Mts (Santiago Peak) Comment
  CAS-BOT-BC217742  Lupinus longifolius E. R. Johnson 1932-4-15 2957 Orange 1 mi. NW of Roundtop, Rancho Santa Ana, Santa Ana Canyon 457 Comment
  RSA413758  Lupinus longifolius Samuel R. Tyson 1942-6-18 s.n. Orange San Dimas Canyon 1555 Comment
Read comments
Nov 15 2013
  JEPS65473  Lupinus microcarpus var. microcarpus H. E. Malmsten 1928-4-27 Orange O Neill Ranch Comment
  UC153540  Lupinus sparsiflorus LeRoy Abrams 1903-4-19 3277 Orange near San Juan; near San Juan Comment
  RSA722339  Lupinus sparsiflorus R. H. McArthur 1934-3-25 s.n. Orange Field W. of Irvine Park. Comment
  RSA788817  Lupinus sparsiflorus subsp. sparsiflorus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49804 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA86974  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1923-5-5 3508 Orange Trabuco Canyon, Santa Ana Mts. 549 Comment
  IRVC15180  Lupinus sparsiflorus subsp. sparsiflorus Gordon A. Marsh, K. Conrey 1977-4-14 s.n. Orange Lomas de Santiago: Lomas Ridge, 1/4mi NNW Rattlesnake Canyon Reservoir Dam. Southern Coastal Comment
  IRVC19804  Lupinus sparsiflorus subsp. sparsiflorus Karlin G. Marsh 1983-4-11 s.n. Orange Laguna Beach: Sycamore Hills, main ridge, head of El Toro-4 canyon. Southern Coastal Comment
  IRVC2342  Lupinus succulentus 1965-4-18 HS 0416 Orange Trabuco Canyon. Santa Ana Mountains Comment
  IRVC16721  Lupinus succulentus J. B. Anderson 1966-4-9 545 Orange San Joaquin Hills: Coyote Canyon, north facing slope, 1/4 mile W of Signal Peak Southern Coastal 274 Comment
  RSA700183  Lupinus succulentus Minor Warne 1934-03 s.n. Orange Santa Ana Canyon Comment
  IRVC2357  Lupinus truncatus A. S. Boughey 1965-6-15 149 Orange Ortega highway; ca. 1.0 mile E of San Juan Guard Station. Santa Ana Mountains Comment
  RSA414397  Lupinus truncatus Fay A. MacFadden 1931-3-1 2939 Orange Laguna Beach, Orange County Comment
  RSA735204  Lupinus truncatus Keith E. Hoffmaster 1934-4-22 177 Orange Santa Ana Mountains Comment
  RSA758902  Lupinus truncatus A. C. Sanders, Mitch Provance 2008-5-20 35393 Orange Lomas de Santiago, mouth of Hangman Tree Canyon just above confluence with Santiago Creek Canyon, c. 1/2 mile below Modjeska Canyon confluence 366 Comment
  UCR98251  Lupinus truncatus Scott D. White 1997-3-28 4851 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  IRVC15185  Lupinus truncatus Gordon A. Marsh, K. Conrey 1975-4-14 s.n. Orange Lomas de Santiago: Lomas Ridge, 1/4mi NNW Rattlesnake Canyon Reservoir Dam Southern Coastal Comment
  IRVC19963  Lupinus truncatus Gordon A. Marsh, Karlin G. Marsh 1983-4-14 s.n. Orange Laguna Canyon: Sycamore Hills, N sector, road edge Southern Coastal 146 Comment
  RSA588779  Lupinus truncatus Fred M. Roberts, Nicole Orlik 1990-4-11 4558 Orange Santa Ana Mountains: East Fork Upper Long Canyon, along Main Divide Truck Trail, 4.4 kilometers SE Los Pinos Peak. 750 Comment
  POM4215  Lycium californicum D. L. Crawford 1916-7-24 741 Orange Laguna Beach. Comment
  RSA428835  Lycium californicum Freda Detmers 1929-5-12 s.n. Orange Capistrano Beach Comment
  UCR240186  Lycium californicum R. E. Riefner Jr. 2012-11-24 12- 558 Orange South Coast, city of San Clemente, Presidio Ave. c. 0.2 mi south of Ave. Pico 34 Comment
  SBBG128745  Lycium californicum R. E. Riefner Jr. 2012-11-24 12 -558 Orange City of San Clemente, Presidio Ave ca. 0.2 mi S of Ave Pico 34 Comment
  SD241893  Lythrum adsurgens Lawrence M. Booth 1932-7-19 1282 Orange Bolsas Marsh. Comment
  SD236331  Lythrum californicum A. C. Sanders, Fred M. Roberts 2008-9-18 36093 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lomas de Santiago, Santiago Creek Canyon c. 0.5-0.8 miles above the highway bridge 299 Comment
  UC73416  Lythrum californicum E. A. Zumbro 1902-1 389 Orange Orange County Comment
  RSA0014852  Lythrum californicum L. M. Booth 1932-6-4 1147 Orange Newport Lagoon. Comment
  UCR207599  Lythrum hyssopifolia O. F. Clarke 2004-5-19 s.n. Orange South Coast, Fairview Park, Costa Mesa 24 Comment
  POM49378  Madia elegans subsp. elegans L. R. Abrams 1901-06 1817 Orange Santiago Peak Trail 915 Comment
  CAS-BOT-BC334710  Madia gracilis A. C. Sanders; Mitch Provance 2008-5-20 35390 Orange Lomas de Santiago mouth of Hangman Tree Canyon just above confluence with Santiago Creek Canyon c. 1/2 mile below Modjeska Canyon confluence, Santa Ana Mountains, Peninsular Range 365 Comment
  SD234830  Madia gracilis A. C. Sanders, Mitch Provance 2008-5-20 35390 Orange Peninsular Range: Santa Ana Mountains: Lomas de Santiago, mouth of Hangman Tree Canyon just above confluence with Santiago Creek Canyon, c. 1/2 mile below Modjeska Canyon confluence (El Toro 7.5' Q) 366 Comment
  RSA0100998  Malacothamnus densiflorus M. B. Dunkle 1933-3-5 3085 Orange San Juan Canyon. Comment
  CAS-BOT-BC206258  Malacothamnus fasciculatus H. F. Copeland 1938-6-28 s.n. Orange Hills back of Laguna Beach Comment
  RSA13294  Malacothamnus fasciculatus Carl B. Wolf 1931-7-25 3893 Orange N side of pear orchard, Rancho Santa Ana, Santa Ana Canyon 122 Comment
  RSA647942  Malacothamnus fasciculatus Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-1 79 Orange 1/2 mile south of Chino Hills State Park. 198 Comment
  RSA714451  Malacothrix saxatilis var. saxatilis R. E. Riefner 1999-8-21 99 -360 Orange Laguna Beach, west of Pacific Coast Hwy., vicinity of Aliso Creek Park and south to West Drive. 0 Comment
  IRVC21322  Malacothrix saxatilis var. tenuifolia Fred M. Roberts 1982-7-30 786 Orange Niguel Hill, 0.9km ENE Aliso Peak, Laguna Niguel 260 Comment
  POM6233  Malacothrix saxatilis var. tenuifolia D. L. Crawford 740 Orange Aliso Canyon Comment
  RSA549990  Malacothrix saxatilis var. tenuifolia Scott D. White 1992-9-23 857 Orange Vicinity of Olinda, near city of Brea, immediately N of Carbon Cyn Rd & E of Placentia Ave.; ca. 1 mi. (airline) SSE of Tonner Cyn. 183 Comment
  UC468866  Malacothrix saxatilis var. tenuifolia D. L. Crawford 740 Orange Aliso Canyon Laguna Beach Region Comment
  RSA528045  Malephora crocea A. C. Sanders 1990-10-6 10188 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Highway 1. 1 Comment
  RSA13103  Malosma laurina Percy C. Everett 1935-10-29 2574 Orange Rancho Santa Ana, Santa Ana Canyon N of canal & Mexican houses. 122 Comment
  SD245234  Malosma laurina R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49609 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Roadbank above San Juan Creek. Comment
  RSA221067  Malus sylvestris E. W. Lathrop 1966-4-6 6133 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  UCR103163  Malva parviflora Scott D. White 1997-3-26 4812 Orange Univ. of Calif. Irvine Campus, east of main campus at site of proposed student recreation center, east of main campus, between California Avenue and Culver Drive. 40 Comment
  RSA716091  Malvaviscus arboreus Fred M. Roberts 2006-7-27 6394 Orange San Joaquin Hills: Laguna Beach, Temple Hill, 731 Nyes Place, 1.0km NNE Golf Island. 174 Comment
  UCR125977  Malvaviscus arboreus Fred M. Roberts, Leo Song 2002-8-1 5562 Orange San Joaquin Hill, Laguna Beach, S flank Temple Hill, between Nyes Place and Balboa Avenue; 0.9 km ENE of Sugarloaf Point 183 Comment
  JEPS68666  Malvella leprosa Lawrence M. Booth 1932-7-21 1296 Orange Anaheim Creek 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
  RSA234536  Malvella leprosa James Henrickson 1970-7-25 5072 Orange 3 miles NE of Huntington Beach at far northern end of Bolsa Chica Salt Marsh. 0 Comment
  RSA734010  Marah macrocarpa A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34619 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir. 366 Comment
  UC1122839  Marah macrocarpa A. Lewis Mar 1934 339 Orange Santa Ana Canyon Corona Quadrangle Comment
  RSA734903  Marrubium vulgare A. C. Sanders 2008-5-28 35440 Orange Lomas de Santiago, Bee Flat at mouth of Limestone Canyon. 264 Comment
  HSC14233  Marrubium vulgare D. W. Snell 1964-3-3 30 Orange 1 mi. E of Brea on Deadora Rd. Comment
  RSA232219  Marrubium vulgare James Henrickson 1970-8-15 5285 Orange 3 miles NW of Huntington Beach, north of Bolsa Bay, 3/4 mile SE of Warner Ave. Comment
  UCSB39765  Marrubium vulgare Levine, N. 1977-5-1 Orange 0.25 miles west on Rosecrans Blvd. from junction of Rosecrans and Beach Blvd, Buena Park 91 Comment
  UC1923821  Marsilea drummondii R. E. Riefner Jr. 2007-9-30 07 -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
  RSA85842  Marsilea vestita F. W. Peirson 1924-5-31 4645 Orange Laguna Canyon, near Laguna Beach 106 Comment
  POM901  Marsilea vestita D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon. Comment
  UCR281940  Matricaria discoidea R. E. Riefner Jr. 2017-3-29 17- 117 Orange South Coast, San Clemente, San Clemente State Beach, North-central area, south of Ave. Calafia 39 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
  CAS-BOT-BC60300  Matthiola incana James R. Shevock 1974-2-26 3272 Orange Along California highway 1 (Pacific Coast Highway) at Bolsa Chica Beach. 3 Comment
  POM476  Matthiola incana D. L. Crawford 1916-8-3 743 Orange Aliso, Laguna Beach Region. Comment
  CDA6381  Mazus japonicus G. D. Barbe 1973-7-9 1694 Orange Bordier s Nursery, 7231 Irvine Boulevard, Santa Ana (Tustin). 0 Comment
  RSA797820  Meconella denticulata Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49809 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  RSA39348  Medicago lupulina E. L. Paddock 1943-6-22 12736 Orange East side Glassell Street north of Fairhaven. Comment
  RSA746516  Medicago rigidula R. E. Riefner Jr. 2007-4-1 07 -165 Orange City of Laguna Niguel, Laguna Niguel Regional Park, general vicinity of La Paz Rd. at Aliso Creek. 70 Comment
  JEPS65531  Medicago sativa Lawrence M. Booth 1932-5-19 1077 Orange Newport Bay Comment
  CAS-BOT-BC532580  Medicago truncatula A. C. Sanders; Fred M. Roberts 2008-4-8 34738 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 457 Comment
  RSA755558  Medicago truncatula A. C. Sanders, Fred M. Roberts 2008-5-6 35258 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
  UCR140883  Melaleuca viminalis Robert DeRuff 1987-7-18 301 Orange Southern Coast, Newport Beach, Big Canyon, near Jamboree Road 11 Comment
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Jun 5 2006
  UC1929696  Melaleuca viminalis R. E. Riefner Jr. 2007-4-1 07 -163 Orange City of Laguna Niguel, Oso Creek, ca. 1.5 mi N from Paseo De Colinas St. on Camino Capistrano St. Comment
  LA10610  Melica imperfecta A. M. Johnson; 1934-4-15 4416 Orange Carmen's, Laguna Beach Comment
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Aug 29 2015
  RSA680537  Melica imperfecta Scott D. White 2003-3-21 8821 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  RSA74  Melica imperfecta J. T. Howell 1928-3-17 877 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  POM50513  Melica imperfecta var. flexuosa Le Roy Abrams 1901-06 1689 Orange San Joaquin Hills Comment
  HSC10819  Melica torreyana J. W. Johnson 1961-3-29 Orange Newport Beach, gully overlooking upper Newport Bay. 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
  IRVC2396  Melilotus albus Pat Rolfe 1965-4-24 s.n. Orange Ortega Highway. Santa Ana Mountains Comment
  RSA735161  Melilotus albus A. C. Sanders, Fred M. Roberts 2008-5-6 35211 Orange Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  RSA5603  Melilotus albus Carl B. Wolf 1932-6-28 3756 Orange Bryant Ranch: along western half of north boundary of 40 acre Valencia orange grove at Bryant Ave. and Hansen Road. 9 Comment
  HSC15021  Melilotus indicus S. M. Clapp 1966-4-7 29 Orange 3 mi. from Modjeska Canyon towards Silverado Canyon. 152 Comment
  IRVC23315  Melilotus indicus Fred M. Roberts 1985-7-23 2067 Orange Irvine; San Diego Creek between E Yale Loop and Jeffrey Rd. Southern Coastal 35 Comment
  IRVC2423  Melilotus indicus Chris Salcido 1965-5-8 s.n. Orange Newport Beach; [Newport] Back Bay. Southern Coastal Comment
  IRVC2429  Melilotus indicus H. Ellis 1965-3-18 s.n. Orange Newport Beach; Corona del Mar, Cameo Highlands. Southern Coastal Comment
  SEINET12147961  Melilotus indicus Unknown 1933-1 8177 Orange Laguna Beach Comment
  IRVC25098  Melissa officinalis Fred M. Roberts, Gordon A. Marsh 1986-8-27 3121 Orange Santa Ana Mtns; Silverado Cyn, Silverado, 1.6km NNW Shrwsbury Spring. Peninsular Ranges 480 Comment
  JEPS42777  Mentzelia micrantha John Thomas Howell 1927-7-3 2642 Orange Santa Ana Mts., Claymine Canyon 304 Comment
  RSA0014074  Mentzelia micrantha Fred M. Roberts 2008-5-28 7011 Orange Lomas de Santiago: Loma Ridge, south fork Rattlesnake Cyn., 2.0km above Rattlesnake Reservoir dam and 2.2km WNW Bee Peak. 230 Comment
  RSA734654  Mentzelia micrantha A. C. Sanders, Fred M. Roberts, A. O Neal, D. E. Bramlet 2008-5-9 35313 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir. 346 Comment
  RSA759203  Mentzelia micrantha Robt. Allen, Reginald Durant 2008-5-16 s.n. Orange Modjeska Peak, S face, base of a steep fire break cut from the summit down to the access road. Survey point 61. 1634 Comment
  UCR25309  Mesembryanthemum crystallinum John C. Roos 1965-6-16 s.n. Orange Dana Point Comment
  UCSB49276  Mesembryanthemum crystallinum Hibbard, Doug 1977-3-4 Orange Black Bay Rd., 0.5 mile from its junction with Jamboree Blvd. Newport Beach Comment
  UCR21020  Mesembryanthemum nodiflorum S. Beckstrom-Sternberg 1980-5-25 52580- 01 7 Orange Jamboree Rd entrance to Hwy 73 South. Comment
  RSA263682  Micropus californicus E. W. Lathrop 1966-4-10 6154 Orange Silverado Canyon Comment
  UCR177441  Micropus californicus Scott D. White, Amanda Duchardt 2003-3-27 8860 Orange Peninsular Ranges/Santa Ana Mtns, Canyon bottom and W-facing slopes above Canada Gobernadora 183 Comment
  RSA608535  Microseris douglasii subsp. platycarpha D. E. Bramlet 1993-3-27 2297 Orange University of California, Irvine Campus, adjacent to the UCI Ecological Reserve. The site is 150 ft. SW of the end of Los Trancos Dr. & 250 ft. E of the reserve entrance. 61 Comment
  UCR108287  Microseris douglasii subsp. platycarpha D. E. Bramlet 1993-4-4 2311 Orange UCI, adjacent to UCI Ecological Reserve, Adjacent to end of Los Trancos DR. and 500 ft. east of the reserve entrance. 46 Comment
  UCR158095  Microseris douglasii subsp. platycarpha Adrian Wolf 1998-5-4 203 Orange South Coast, Coastal Hills, Aliso/Woods Canyon Regional Park, Aliso Canyon 0.75 km SW of Woods Canyon, 2.25 km NNW of Aliso Water Treatment Plant, north of access road 30 Comment
  UCR107841  Microseris heterocarpa Scott D. White 1998-3-18 6213 Orange UCI, site of proposed research park, c. halfway between Berkeley Ave. and new freeway. 37 Comment
  RSA263649  Microseris lindleyi E. W. Lathrop 1966-4-6 6138 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA759107  Mimulus aurantiacus Robt. Allen, Reginald Durant 2008-9-28 s.n. Orange Laurel Spring, just below Harding Truck Trail. Survey Waypoint no. 85. Comment
  RSA551154  Mimulus aurantiacus var. pubescens David M. Thompson 1992-5-16 1068 Orange 0.6 mi. SW of San Bernardino Co. line along Carbon Canyon Rd. (Hwy 142). 229 Comment
  RSA647949  Mimulus aurantiacus var. pubescens Ken Greby 1985-5-17 35 Orange behind PG and E substation located 2 km. SE from Laguna Canyon Rd., on El Toro Rd., adjacent to Leisure World. Comment
  RSA82104  Mimulus aurantiacus var. pubescens F. W. Peirson 1924-5-31 4660 Orange Laguna Canyon, near Laguna Beach. 61 Comment
  LA209127  Mimulus aurantiacus var. puniceus Joseph Andorfer Ewan; 1932-7-28 7692 Orange Corona del Mar Comment
  RSA747634  Mimulus aurantiacus var. puniceus Fred M. Roberts 2008-5-16 6981 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
  RSA0014993  Mimulus brevipes Fred M. Roberts 2008-5-14 6965 Orange Lomas de Santiago: Loma Ridge, upper Bee Flat Canyon below Loma Ridge Rd., 1.3 km N Bee Peak and 5.4 km NW Bolero Lookout, Irvine Ranch Conservancy. 381 Comment
  RSA790706  Mimulus brevipes L. C. Hull 1934-4-8 15 Orange Laguna Hills. Comment
  UCR193808  Mimulus cardinalis A. C. Sanders, Fred M. Roberts 2008-7-16 35835 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin 391 Comment
  POM256712  Mimulus clevelandii W. Pequegnat 1940-6-15 s.n. Orange Trabuco Peak 1220 Comment
  RSA17495  Mimulus clevelandii Percy C. Everett 1936-8-28 8233 Orange Main Divide Motorway, Head of Trabuco Canyon 1159 Comment
  RSA701812  Mimulus floribundus Fred M. Roberts, David Bramlet 2003-6-6 5902 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. Comment
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Nov 9 2014
  RSA734757  Mimulus floribundus A. C. Sanders, T. B. Salvato 2008-5-13 35335 Orange Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence. 366 Comment
  CDA41824  Mimulus puniceus Pope & Hill 1957-4-9 s.n. Orange Irvine Ranch. 0 Comment
  RSA637487  Minuartia douglasii Valerie L. Soza, LeRoy Gross 1999-6-10 512 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off Main Divide Road. 1524 Comment
  RSA698204  Mirabilis laevis Minor Warne 1934-03 s.n. Orange Laguna Canyon Forks Comment
  RSA698208  Mirabilis laevis Stephen Bruff s.n. Orange Lemon Heights. Comment
  RSA732070  Mirabilis laevis A. C. Sanders, Fred M. Roberts 2008-3-25 34556 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills. 259 Comment
  UCR190984  Mirabilis laevis A. C. Sanders, Fred M. Roberts 2008-4-22 34994 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
  UCR281191  Modiola caroliniana Roger E. Reinke 2011-5-16 s.n. Orange Coastal Plain, Santa Ana, residence at 12782 Bubbling Well Road, backyard, end of driveway 41 Comment
  CAS-BOT-BC435043  Mollugo verticillata L. R. Abrams 1901-6-1 1769 Orange Laguna Comment
  SEINET182350 Image available Monanthochloe littoralis L. M. Booth 1932-5-12 1046 Orange Newport Bay Comment
  RSA0005460  Monardella hypoleuca Percy C. Everett 1935-7-11 7266 Orange Santa Ana Mountains: Main Divide Motorway, 4 miles N from Ortega Hwy in San Juan Canyon. 1098 Comment
  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
  UCR158808  Monardella hypoleuca subsp. intermedia A. C. Sanders, Mark A. Elvin 2005-9-2 31607 Orange Santa Ana Mtns., upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks 820 Comment
  RSA401628A  Monardella macrantha subsp. hallii Albert J. Perkins 1914-5-30 s.n. Orange Summit of Santiago Peak Comment
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Jan 12 2011
  UC2035996  Monardella macrantha subsp. hallii P. C. Everett 1935-6-19 7223 Orange Santa Ana Mts., Main Divide Motorway 1.5 mi below summit Santiago Peak, E slope 1310 Comment
  IRVC26699  Moraea fergusoniae Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3173 Orange UCI Arboretum Southern Coastal 15 Comment
  IRVC26728  Moraea tricuspidata Mark A. Elvin 2004-4-4 3224 Orange UCI Arboretum Southern Coastal 15 Comment
  CAS-BOT-BC275292  Muhlenbergia microsperma Helen D. Geis 1902-1-1 556 Orange Unspecified Comment
  POM265765  Muhlenbergia microsperma J. C. Roos 2081 Orange East of San Juan Capistrano Comment
  RSA542548  Muhlenbergia microsperma Fred M. Roberts 1988-2-26 3809 Orange Dana Point above Dana Point marina, south of Santa Clara Ave., 0.6 km NE Marine Institute 27 Comment
  RSA790096  Muhlenbergia microsperma R. E. Riefner Jr. 2011-8-16 11 -99 Orange Newport Beach, Orange County Parks and Recreation lands, along Newport Coast Drive, between Vista Ridge Rd. & Alteza Rd. 281 Comment
  SD27973  Muhlenbergia microsperma Carl B. Wolf 1932-3-8 2689 Orange 1/2 mi. No. of Corona Del Mar. Borders of Newport Bay, low bluffs 7 Comment
  UCR2585  Muhlenbergia microsperma F. M. Reed 1922-4-30 4721 Orange Arch Beach 229 Comment
  UCSB52473  Muhlenbergia microsperma Roberts, Fred 1983-1-7 Orange Park Canyon along west flank of Temple Hill; 1,7km SE Bench Mark 104; 1.7km NE Thurston High School; Laguna Beach 230 Comment
  UCSB48199  Muhlenbergia rigens Roberts, Fred 1981-6-26 Orange Viejo Cyn., 0.4 km N Calif. Rte. 74; 2.7 km ENE San Juan Guard Station; Santa Ana Mts. 311 Comment
  RSA696204  Myosotis arvensis Ruth Greenwald, Virginia Pritchard 1938-05 s.n. Orange Santa Ana. Comment
  RSA0043357  Nama stenocarpa Fred M. Roberts, Laura Cohen 2012-10-31 7714 Orange San Joaquin Hills. Upper Laguna Lake, north end. Laguna Coast Wilderness Park, c. 5.1 km east northeast of Signal Hill. 113 Comment
  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
  RSA653208  Nassella pulchra David Barrios 1991-5-8 20 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 365 Comment
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Jul 23 2008
  UC407317  Nassella pulchra LeRoy Abrams 1903-4-18 3269 Orange Trabuco Canyon Capistrano Comment
  RSA443822  Nasturtium officinale 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
  CAS-BOT-BC109090  Nemacaulis denudata var. denudata Le Roy Abrams 1901-6-1 1757 Orange Anaheim Landing. Comment
  UCD170319  Nemacaulis denudata var. denudata O. F. Clarke 2003-5-7 s.n. Orange South Coast, Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach. 4 Comment
  UCR207191  Nemacaulis denudata var. denudata O. F. Clarke 2003-5-7 s.n. Orange South Coast, Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach 4 Comment
  UCR230830  Nemacaulis denudata var. denudata Dick Newell 2011-6-17 176 Orange South Coast, Bolsa Chica Beach, Pacific Coast Hwy near Santa Ana River 5 Comment
  RSA699273  Nemophila menziesii var. integrifolia Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts. PR8. Comment
  RSA588783  Nemophila menziesii var. integrifolia Fred M. Roberts, Nicole Orlik 1990-4-11 4715 Orange Santa Ana Mountains: East Fork Upper Long Canyon, along Main Divide Truck Trail, 4.4 kilometers SE Los Pinos Peak. 750 Comment
  RSA75869  Nemophila menziesii var. integrifolia F. W. Peirson 1923-5-6 3495 Orange Large patches on summit region. Santiago Peak, Santa Ana Mts 1723 Comment
  UCR218454  Nerium oleander Robert DeRuff 2009-1 132 Orange South Coast, Upper Newport Bay, Delhi Ditch and along Back Bay Drive 6 Comment
  UC424185  Nicotiana clevelandii Philip A. Munz 1923-4-4 Orange Laguna Beach Comment
  CAS-BOT-BC231676  Nicotiana glauca Ira L. Wiggins 1965-11-6 20348 Orange Near Well No. 14, Kraemer Oil Estates near end of county road leading to Rancho Sanata Ana Comment
  CAS-BOT-BC231677  Nicotiana glauca Agnes M. Bowman 1899-4-1 s.n. Orange Santa Ana Rv. Comment
  HSC21278  Nicotiana glauca J. J. Wagoner 1965-4-11 15 Orange 6 mi. N of Modjeska Canyon near Irvine Lake off of Irvine Rd. 152 Comment
  OBI28517  Nicotiana glauca R. L. Allen 1978-8-28 s.n. Orange Mission Viejo, near Saddleback Ranch Apts; Los Alisos Blvd Comment
  UCR223423  Nicotiana glauca Dick Newell, Don Millar 2011-3-1 069 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  RSA0042735  Nicotiana glauca David Barrios 1991-5-8 25 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir., Yorba Linda. 365 Comment
  RSA184099  Nicotiana glauca I. L. Wiggins 1965-11-6 20348 Orange Near well #14, Kramer Oil Estates, near end of county road to Rancho Santa Ana. Comment
  RSA0060156  Nicotiana quadrivalvis Fred M. Roberts 1999-4-21 5177 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
  RSA70257  Nolina cismontana Frank W. Peirson 1923-5-5 3507 Orange Trabuco Canyon, Santa Ana Mountains 518 Comment
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Jan 6 2018
  RSA746535  Nolina cismontana R. E. Riefner 2007-6-14 7 -256 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fork Fremont Canyon, Donaldson Ranch Area. 381 Comment
  UC1728555  Nolina cismontana James C. Dice with T. Oberbauer 1986-5-3 650 Orange 0.2 km w Trabuco Canyon; Santa Ana Mtns 365 Comment
  UC1931364  Nolina cismontana R. E. Riefner Jr. 2007-6-14 07 -256 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fork Fremont Canyon, Donaldson Ranch area. Comment
  RSA698083  Nolina parryi Minor Warne 1934-5-19 s.n. Orange Live oak Canyon. Comment
  RSA0051415  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
  RSA98320  Oenanthe sarmentosa F. W. Peirson 1924-2-9 4525 Orange Between Wintersberg and the sea. Comment
  POM200890  Oenothera californica Carl B. Wolf 1931-3-25 1935 Orange along Santa Fe R. R, 1 mile west of Atwood. 91 Comment
  UC527217  Oenothera californica subsp. californica C. B. Wolf 1931-3-25 1935 Orange along Santa Fe R.R. 1 mi w Atwood 91 Comment
  RSA733636  Oenothera dentata R. H. McArthur 1934-3-10 s.n. Orange Tomatoe Springs Comment
  RSA698244  Oenothera elata subsp. hirsutissima J. R. Bruff 1930-10 16 Orange Santa Ana River Bed. Comment
  UC1007125  Oenothera elata subsp. hookeri P. A. Munz 1938-6-23 15569 Orange 1 mi below Capistrano; San Juan Creek Comment
  RSA698248  Oenothera pallida Kenneth Beard s.n. Orange Santa Ana riverbank Comment
  UCR246518  Oenothera speciosa Fred M. Roberts 2013-5-15 7772 Orange San Joaquin Hills, Buck Gully, north slope, Newport Beach, near Ocean Beach Drive, 1.8 km northwest of the summit of Pelican Hill 122 Comment
  UC1005021  Oenothera xenogaura E. Johnson 1940-8-15 Orange 1.5 mi n of Placentia (Klokke Estate); Klokke Estate Comment
  RSA753081  Olea europaea A. C. Sanders, Fred M. Roberts 2008-9-18 36081 Orange Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge. 320 Comment
  POM288521  Opuntia X occidentalis Lyman Benson 1955-10-17 15597 Orange Moulton Ranch just west of the summit east of Laguna Beach. 152 Comment
  SD152894  Opuntia X occidentalis Steve Boyd, Tim Ross 1992-5-19 7425 Orange Southern Santa Ana Mountains, San MateoCanyon Wilderness Area, western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo north into Aliso Canyon. Local, openings in chaparral. (IPB 9/07) 365 Comment
  SEINET10732293  Opuntia X occidentalis Betty Venrick 1961-5-13 Venrick 586 Orange 3 miles North of Laguna Beach, on coast. Comment
  CAS-BOT-BC56838  Opuntia ficus-indica J. C. Lee 1966-4-9 27 Orange Field redacted by CAS, contact the data manager for more information 304 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
  UCR217283  Opuntia oricola Mark A. Elvin 2003-1-26 2234 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-BC500129  Orobanche fasciculata Le Roy Abrams 1901-6-15 1847 Orange Santiago Peak 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
  POM286416  Orthocarpus purpurascens Lyman D. Benson 1932-3-26 3191 Orange Dana Point. 61 Comment
  UC912573  Osmadenia tenella Herbert L. Mason 1926-4-25 2903 Orange 5 mi n of Laguna Comment
  UCR209663  Osmadenia tenella Fred M. Roberts 2008-5-16 6984 Orange South Coast, Dana Point Headlands, Center for Natural Lands Mgmt. Preserve north of Marguerita Drive, 0.5 km west-northwest of the Marine Institute, Dana Point Harbor 75 Comment
  UCR222414  Osmadenia tenella D. E. Bramlet 2008-4-15 4178 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon, 301 m east of Haul Road & 1.4 km north of Bee Canyon access road 206 Comment
  HSC46607  Osmorhiza brachypoda Christopher Davidson 1977-5-18 5618 Orange Santa Ana Mts. Cleveland Nat. Forest. Bear Springs 1220 Comment
  UCR138442  Oxalis californica R. E. Riefner Jr. 2000-4-27 20- 389 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running south from Baker Canyon Road to Silverado Road 335 Comment
  UCR193383  Oxalis californica A. C. Sanders, Mitch Provance 2008-5-20 35391 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, mouth of Hangman Tree Canyon just above confluence with Santiago Creek Canyon, c. 1/2 mile below Modjeska Canyon confluence 366 Comment
  UCSB3548  Oxalis californica Kamb, Peter 1948-6-19 Orange Holy Jim Canyon, Santa Ana Mtns. 609 Comment
  RSA731941  Oxalis corniculata Fred M. Roberts, Sandy Leatherman 2007-11-27 6694 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. c.a. 0.3km S Fairmont Blvd. 118 Comment
  SEINET3093692 Image available Oxalis pes-caprae J. Harry Lehr 1972-3-30 625 Orange Santa Ana Street. 30 Comment
  UCD111026  Oxalis pes-caprae Gordon Pilone 1961-3-14 111 Orange Little Corona Del Mar. 3 Comment
  OBI82302  Pallenis maritima Unknown 2012-5-25 12 -393 Orange City of Dana Point, rocky shore between Mussel Cove and Salt Creek Beach. Local, subshrubs in rock crevices along a calcareous seep and cobbles on the coastal strand. 3 Comment
  RSA797015  Pallenis maritima R. E. Riefner Jr. 2010-1-2 10 -3 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 2 Comment
  UCR241101  Pallenis maritima R. E. Riefner Jr. 2011-6-25 11- 74 Orange South Coast, city of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby Street 7 Comment
  RSA60  Panicum capillare J. T. Howell 1927-7-27 489 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  RSA773552  Panicum capillare Fred M. Roberts 2008-6-3 7032 Orange Lomas de Santiago: Loma Ridge, East Fork Rattlesnake Canyon, ca. 2.6 km NE Rattlesnake Reservoir spillway and 2.4 km ENE Bee Peak 225 Comment
  CAS-BOT-BC389660  Panicum coloratum R. E. Riefner, Jr. 2014-7-6 14 -218 Orange City of Los Alamitos, along Los Alamitos Channel, E of 605 Fwy., N of Katella Ave., S of Coyote Creek, NE of Oak Academy Park, vicinity of Adobe Dr. and Acorn Ln. 11 Comment
  RSA731536  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2007-9-30 7 -417 Orange City of Yorba Linda, N floodplain of Santa Ana River near Yorba Linda Regional Park. 98 Comment
  UCSB44178  Parapholis incurva Henneman, J. 1977-5-21 Orange Newport Back Bay Comment
  RSA752714  Parietaria hespera var. californica Fred M. Roberts, Sandra Leatherman, Jennifer Pareti 2009-4-14 7150 Orange Dana Point Headlands: Dana Strand Beach and slopes above beach, 0.8 km WNW Marine Institute at Dana Point Harbor. CNLM Dana Point Preserve. 3 Comment
  CAS-BOT-BC413392  Parietaria hespera var. hespera Marcus E. Jones 1926-3-13 s.n. Orange Santa Ana Canon [Canyon] Comment
  IRVC19396  Parkinsonia aculeata R. L. Allen 1983-2-12 A624 Orange Fullerton; Hillcrest Park, slope bordering E Valley View Drive. Southern Coastal Comment
  IRVC24070  Parkinsonia aculeata Fred M. Roberts 1985-8-23 2175 Orange Mission Viejo; San Diego Fwy. (I-5), 0.9km N Oso Pkwy., on west side. Southern Coastal 121 Comment
  POM12439  Paspalum distichum P. A. Munz 1922-9-2 6352 Orange Ponds in Laguna Canyon 46 Comment
  RSA603302  Paspalum distichum Scott D. White, Brian Leatherman 1997-6-12 5333 Orange East of San Juan Capistrano: San Juan Creek beteen Highway 74 bridge and Mission Vieja site, i.e. ca. 2 - 4 miles E of I-15 [Interstate 5] / Highway 74 junction. 46 Comment
  UC455151  Paspalum distichum I. J. Condit 1908-7-21 Orange Los Alamitos Comment
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Nov 20 2010
  RSA0089484  Paspalum vaginatum D. E. Bramlet 2009-11-27 4429 Orange South Coast: San Diego Creek between Irvine and Newport Back Bay. 4 Comment
  RSA733054  Paspalum vaginatum R. E. Riefner 2007-7-8 07 -304 Orange City of Laguna Niguel, Aliso Creek, Alica Pwky. at Park Way. 46 Comment
  SD218260  Paspalum vaginatum R. E. Riefner Jr., K. Campbell 2008-8-31 08 267 Orange City of Irvine, tidal portion of San Diego Creek, immediately easst of Highway 73 overpass. 0 Comment
  UC1930114  Paspalum vaginatum R. E. Riefner Jr. 2008-1-13 08 -9 Orange City of Newport Beach, San Diego Creek near Hwy. 73 overpass, E of Jamboree Rd. Comment
  UC1543029  Pectocarya linearis subsp. ferocula Donald G. Nelson 1935-3-16 167 Orange n Fullerton (across valley from Hillcrest Park) Comment
  UCR281514  Pectocarya penicillata Mitch Provance, Jeremiah George 2017-3-20 317- 109 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
  UCD169762  Pedicularis densiflora R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49711 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  UCR119306  Pedicularis densiflora R. E. Riefner Jr. 2000-3-18 20- 134 Orange Cleveland National Forest. Ridge-top east of Fremont Canyon and west of Hidden Valley 732 Comment
  JEPS117764  Pelargonium Mark A. Elvin 2005-5-14 4314 Orange Southern Coastal: UCI Arboretum. Comment
  RSA710818  Pelargonium A. C. Sanders, Mark A. Elvin 2003-10-12 27314 Orange Southern Coastal Slope: Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blve. and Campus Dr. 15 Comment
  UCR218614  Pelargonium X domesticum Robert DeRuff 2009-1 547 B Orange South Coast, Upper Newport Bay, below intersection of Back Bay Dr. and East Bluff Dr. 12 Comment
  CAS-BOT-BC67762  Pellaea andromedifolia Ira L. Wiggins 1966-2-4 20420 Orange Among rocks on floor of Trabuco Cnayon, about 1/2 mile above canyon mouth. Comment
  RSA686730  Pellaea andromedifolia M. B. Dunkle 1935-2-23 4339 Orange Dana Point. 9 Comment
  UCSB48093  Pellaea andromedifolia Roberts, Fred 1981-4-12 Orange Santa Ana Mtns.: San Juan Canyon, Hwy 74, 1.3km by road E of San Juan Guard Station, 0.9km SE Juan Rancho SM 295 Comment
  RSA598963  Pellaea andromedifolia var. andromedifolia Scott D. White 1997-3-28 4835 Orange Above Modjeska Canyon, proposed water tank site 425 Comment
  RSA739323  Pellaea mucronata Keith E. Hoffmaster 1931-1-1 33 Orange Santa Ana Mountains Comment
  IRVC20364  Pellaea mucronata var. mucronata Fred M. Roberts, D. A. Roberts 1983-3-22 935 Orange San Juan Canyon, above Hwy 74, 2.7km ENE San Juan Guard Sta.; 3.6km SSW Sugar Loaf Pk., Santa Ana Mountains 407 Comment
  RSA18551  Pennisetum clandestinum Wesley Conklin 1937-1-20 8309 Orange Growing in Conklin's yard at Placentia Comment
  UCD89479  Pennisetum setaceum Peter H. Raven 1957-9-28 11395 Orange Laguna Beach. Comment
  RSA0024926  Pennisetum villosum R. E. Riefner Jr. 2013-2-11 13 -41 Orange City of Laguna Beach, vicinity of Pacific Coast Highway and Montage Resort Dr. 30 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
  UC1011907  Penstemon heterophyllus F. W. Pennell and E. M. Harvey 1949-6-29 26804 Orange Ortega Highway above San Juan Capistrano; above San Juan Capistrano Comment
  RSA407932  Penstemon heterophyllus var. australis N. C. Cooper 1949-5-1 3939 Orange San Juan Canyon. 610 Comment
  RSA16714  Penstemon spectabilis B. D. Stark 1935-7-26 7533 Orange 2 mi. south of summit of Skyline Drive, on road along ridge to Santiago Peak. 1067 Comment
  UC1063198  Penstemon spectabilis A. Lewis May 1934 436 Orange Los Pinos Peak Cleveland National Forest, Elsinore Quad. Comment
  RSA0054894  Penstemon spectabilis Keith E. Hoffmaster 1934-4-8 134 Orange Santa Ana mts. Comment
  CAS-BOT-BC330340  Pentachaeta aurea Le Roy Abrams 1903-4-17 3259 Orange Near El Toro Comment
  CAS-BOT-BC330343  Pentachaeta aurea P. C. Everett 1935-4-22 6463 Orange Santa Ana Canyon, 0.25 mi W of Horseshoe Bend 121 Comment
  POM156456  Pentachaeta aurea L. R. Abrams 1903-4-17 3259 Orange Near El Toro 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
  RSA0060232  Pentagramma triangularis Minor Warne 1934-4-14 s.n. Orange Laguna Canyon Forks. Comment
  RSA0060347  Pentagramma triangularis Gary D. Wallace, G. Cromwell 1966-4-16 459 Orange W edge of Cleveland Nat. For. about 5 mi. E of San Juan Capistrano, in the Santa Ana Mountains, in Hot Springs Canyon. Comment
  IRVC14091  Pentagramma triangularis subsp. triangularis B. T. Gittins 1966-11-13 1672 Orange Silverado Canyon, 1mi past historical marker; shaded bank near stream bed. Santa Ana Mountains Comment
  UC218598  Pentagramma viscosa I. M. Johnston 1918-5-4 1926 Orange hills back of Laguna Beach 152 Comment
  LA204537  Peritoma arborea A. H. Lange; 1951-4-26 sn Orange Balboa Comment
  SD231420  Persicaria hydropiperoides Scott D. White, Matt Carlton 2003-11-20 9868 Orange Santa Ana Mountain foothills: San Juan Creek in San Juan Capistrano. 24 Comment
  RSA690  Petunia parviflora J. T. Howell 1927-6-30 247 Orange Bryant Ranch, near Long Beach. 15 Comment
  RSA626154  Petunia parviflora R. E. Riefner Jr. 1998-4-2 98 -245 Orange W of Talbot Park and NNE from Rte 1 and Prospect St. 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
  POM7744  Phacelia cicutaria var. hispida Florence Breckenridge 1920-4-17 s.n. Orange Hills north of Laguna. Comment
  RSA221010  Phacelia cicutaria var. hispida E. W. Lathrop 1966-4-18 6174 Orange 4 mi NE of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  POM4488  Phacelia davidsonii L. R. Abrams 1901-06 1936 Orange Santiago Peak. Comment
  RSA12930  Phacelia distans Carl B. Wolf 1935-4-7 6320 Orange Mouth of San Juan Hot Springs Canon, at san juan Hot Springs 213 Comment
  RSA74144  Phacelia distans F. W. Peirson 1923-5-5 4713 Orange Trabuco Canyon, Santa Ana Mountains 518 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
  UCSB52917  Phacelia distans Roberts, Jr., Fred 1985-3-10 Orange Dana Point Headlands: south of Scenic Dr., 0.3 km. W Dana Point Harbor; 0.8 km. S Richard Henry Dana School 60 Comment
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Feb 22 2019
  RSA603  Phacelia imbricata subsp. bernardina J. T. Howell 1928-5-12 965 Orange Between Aliso Canyon and Botany Garden. 366 Comment
  CHSC42166  Phacelia minor L. A. Hinman 1986-3-22 1 Orange Ca. 6 mi nw of San Juan Capistrano, in Bell Canyon, 2 mi n of hwy 74. Ca. 25 ft e of Bell Creek. 128 Comment
  RSA13058  Phacelia minor Percy C. Everett 1935-4-22 6464 Orange Along Santa Fe Rail Road above the pear orchard, Rancho Santa Ana, Santa Ana Canyon. 107 Comment
  UCR192733  Phacelia minor A. C. Sanders, Fred M. Roberts 2008-5-6 35233 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
  RSA59990  Phacelia minor Verne Grant, Alva Grant 1949-4-23 8660 Orange West entrance of Cleveland National Forest on Hywy 74. Comment
  JEPS1324  Phacelia parryi Alice King March 1908 Orange Santiago Creek Santa Ana Mts. Comment
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1
  UCR190988  Phacelia parryi A. C. Sanders, Fred M. Roberts 2008-4-22 34990 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
  UCR191337  Phacelia parryi A. C. Sanders, Fred M. Roberts 2008-4-8 34781 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon 495 Comment
  UCR192504  Phacelia parryi A. C. Sanders, Fred M. Roberts 2008-3-25 34551 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR220302  Phacelia parryi Dick Newell, Don Millar, Jutta Burger 2010-3-16 010 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Agua Chinon Wash 250 m north of Hwy 241 toll road 201 Comment
  UCR224034  Phacelia parryi Justin M. Wood 2010-3-31 1449 Orange Santa Ana Canyon, Santa Ana River floodplain, 0.25 mi north of Coal Canyon wildlife corridor, west of Green River Golf Course on bluff south of the river 122 Comment
  UCR233740  Phacelia parryi Fred M. Roberts 2008-6-26 7062 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
  RSA0027430  Phacelia ramosissima Fred M. Roberts 2013-7-18 7663 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
  RSA0125892  Phacelia ramosissima Fred M. Roberts Jr. 2012-5-9 7554 Orange Santa Ana Mountains: Lake Forest. along Serrano Creek, hiking trail, 0.7 km SSW intersection of Commerce Centre and Dimension Drives. 152 Comment
  RSA428288A  Phacelia ramosissima H. C. Ackley 1926-05 5984 Orange Sunset Beach. Comment
  RSA739553  Phacelia ramosissima A. C. Sanders, Fred M. Roberts 2008-7-3 35665 Orange Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 365 Comment
  RSA0003878  Phacelia ramosissima var. austrolitoralis J. T. Howell 1927-7-17 421 Orange Near Laguna Beach Comment
  UC702949  Phacelia ramosissima var. latifolia John Thomas Howell 1927-6-3 2417 Orange Santa Ana Canyon Southern Puente Hills Comment
  SEINET6088752  Phacelia suaveolens Unknown 2008-6-26 Orange Peninsular Ranges. Santa Ana Mountains. Modjeska Peak, north face. Along access road up Modjeska Peak, outside the sharp bend in the extreme N end of the road. Survey Point # 47. Comment
  RSA759243  Phacelia suaveolens subsp. keckii Robt. Allen, Lori Whalen 2008-7-5 s.n. Orange Along Harding Canyon Truck Trail, on the ridgeline south of upper Harding Canyon. 1.55 air miles SW of Maple Springs Saddle - Harding Canyon USFS gate, 0.71 air miles due W of BM 5015 on Main Divide Road, W arm of Modjeska Peak., Survey point no. 38 1298 Comment
  UCR154352  Phalaris canariensis Mark A. Elvin 2004-5-2 3422 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 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
  CDA22545  Phalaris minor J. B. Anderson 1966-4-18 597 Orange Mac Arthur Boulevard near Red Hill Road. 0 Comment
  RSA0027433  Phalaris minor Fred M. Roberts 2013-7-18 7667 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
  SEINET4182708 Image available Phalaris minor A. A. Beetle 1942-4-19 3091 Orange 20 Miles South of Santa Ana, road to Laguna Comment
  UCR170306  Phalaris minor J. B. Anderson 1966-4-22 603 Orange South Coast, San Joaquin Hills, Los Trancos Canyon 183 Comment
  RSA697734  Phalaris minor Anonymous s.n. Orange Santa Ana. Comment
  RSA459265  Pholistoma auritum M. B. Dunkle 1935-3-3 4347 Orange San Juan Canyon. 457 Comment
  UCR261684  Pholistoma auritum var. auritum Dick Newell, Don Millar 2015-3-24 392 Orange South Coast, San Joaquin Hills, on Willow Canyon Trail 0.2 mi. west of Laguna Coast Wilderness Park entrance off Laguna Canyon Rd. 88 Comment
  RSA751398  Pholistoma racemosum R. E. Riefner Jr. 2008-5-20 8 -107 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fork of Fremont Canyon, S of Donaldson Ranch. 377 Comment
  UCR234153  Phoradendron macrophyllum Dick Newell 2011-12-27 222 Orange Peninsular Range; Santa Ana Mtns. Region, Lomas de Santiago, along Limestone Canyon Rd. at junction to Dripping Springs Trail 311 Comment
  POM3998  Phyla lanceolata D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon Comment
  UC536905  Phyla lanceolata Lawrence M. Booth 1932-7-1 1238 Orange Anaheim Meadows Comment
  RSA384022  Phyllospadix torreyi George R. Johnstone 1927-8-14 s.n. Orange Laguna Beach. Comment
  UCR19761  Phyllospadix torreyi F. M. Reed 1932-5-24 7233 Orange South Coast, San Juan Capistrano, behind beach dune Comment
  RSA0127409  Physalis crassifolia Fred M. Roberts 2016-5-25 8062 Orange Irvine: San Joaquin Hills, Turtle Rock Community, tributary to Shady Canyon, 1.2 km SE summit of French Hill between Alejo and Tradewind Roads. 107 Comment
  SD43531  Physalis philadelphica P. A. Munz 1946-11-7 11607 Orange near Administration Building, Rancho Santa Ana Botanic Garden, Santa Ana River Canyon 198 Comment
  RSA759536  Pickeringia montana var. tomentosa Robert Allen, Nancy Heuler 2007-5-19 s.n. Orange San Juan Trail, circa 3.1 air miles below (SW of) trailhead at southern edge of Blue Jay Campground, circa 1.6 air miles above (NE of) trailhead at Hot Springs Canyon. 782 Comment
  MACF019850  Pinus attenuata Doug Stavert 1975-4-27 Orange Pleasants Peak, Santa Ana Mtns. Comment
  SEINET10879506  Pinus attenuata Andrew Townesmith, Karen M. Meyer; Tracy Scott 2007-3-11 Townesmith 677 Orange Cleveland National Forest. Off Long Canyon Road (Forest Service road 6S05). Near entrance to Falcon Group Camp. 1000 Comment
  RSA0027777  Pinus attenuata Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49694 Orange Northern Santa Ana Mountains: Sierra Peak 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
  RSA562814  Pinus canariensis Steve Boyd, Tim Ross 1992-5-20 7467 B Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon along canyon floor from crossing Lucas Canyon Trail., Upstream 1/4 mile to spur trail leading to old mining habitations in side canyon. 305 Comment
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Feb 4 2016
  SEINET7882517 Image available Pinus contorta Jean Coulson 1959-1 s.n. Orange Disneyland, Orange County, California. Located on small hill E. of castle, near house of tomarrow. Comment
  IRVC20775  Pinus coulteri Fred M. Roberts 1980-5-3 68 Orange Main Divide Truck Trail, 0.6km SE Trabuco Peak, Santa Ana Mountains 1259 Comment
  UCR231192  Pinus coulteri A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39932 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1152 Comment
  CDA1425  Pinus halepensis D. G. Kelch 2006-12-9 06 .553-B Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  RSA659356  Pinus halepensis P. Shirokawa 1998-5-15 42 Orange Cleveland National Forest- Trabuco Ranger District, 4.25 miles from Ortega Highway (State Highway 74) on North Main Divide Road, and 0.5 miles into Falcon campground 1067 Comment
  POM6289  Piperia cooperi Philip A. Munz, L. T. Street, G. Williams 1919-5-3 2638 Orange Santa Ana River Canyon. Comment
  RSA758896  Piptatherum miliaceum A. C. Sanders, T. B. Salvato 2008-5-13 35352 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
  UCR250133  Piptatherum miliaceum Dick Newell, Judy Booth 2013-12-25 346 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, Cleveland National Forest, at end of paved roadway 899 Comment
  UCR188937  Pittosporum undulatum Robert DeRuff 2006-1 566 Orange Newport Beach, Upper Newport Bay, Eastbluff 30 Comment
  UCR189552  Pittosporum undulatum Fred M. Roberts 2007-10-29 6618 Orange South Coast, Niguel Hill, Laguna Niguel. Seaview Park, 1.3 km ENE of Aliso Peak 265 Comment
  RSA627741  Plagiobothrys acanthocarpus Scott D. White 1998-1-26 6064 Orange Irvine, Univ. of Calif. Irvine Campus: Site of proposed Research Park. SW of main campus circle, ca. halfway between Berkeley Av. and new freeway (Bonita Cyn.) -37 Comment
  UC881311  Plagiobothrys acanthocarpus Alice Eastwood and John Thomas Howell 1937-4-24 3934 Orange Dana Point Comment
  UCR107848  Plagiobothrys acanthocarpus Scott D. White, B. Leatherman 1998-1-26 6064 Orange Irvine, Univ. of Calif. Irvine Campus: Site of proposed Research Park. SW of main campus circle, c. halfway between Berkeley Avenue and new freeway (Bonita Cyn.) 37 Comment
  UCR191345  Plagiobothrys collinus A. C. Sanders, Fred M. Roberts 2008-4-8 34742 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 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
  RSA682599  Plagiobothrys collinus var. californicus Scott D. White, Amanda Duchardt 2003-3-27 8863 Orange Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  RSA0127411  Plagiobothrys collinus var. fulvescens Fred M. Roberts 2016-3-17 8006 Orange San Joaquin Hills: City of Irvine, Bommer Canyon, east fork, 0.3 km ESE Cattle Camp near East Fork Trail. 152 Comment
  UCSB52464  Plagiobothrys collinus var. fulvescens Roberts, Fred 1982-4-2 Orange Laguna Niguel; hills, 3.5 km. ESE Aliso Peak; 3.2 km. ESE Alicia Fire Station, N of Del Avion 100 Comment
  RSA542654  Plagiobothrys nothofulvus Fred M. Roberts 1988-4-10 3903 Orange Lomas De Santiago: Loma Ridge, Upper Limestone Canyon, c.a. 3.2 kilometer NNW Bolero Lookout. 347 Comment
  RSA678450  Plantago coronopus Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary Wallace 2001-4-4 1121 -b Orange Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  SD181425  Plantago coronopus Valerie Soza, Kevin Clark, LeRoy Gross, Will Miller, 2001-4-4 1121 a Orange Anaheim Bay: Seal Beach U.S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  JEPS37907  Plantago elongata Alice Eastwood and John Thomas Howell 1937-4-24 3936 Orange Dana Point Comment
  HSC16827  Plantago erecta J. W. Johnson 1961-2-19 Orange Newport Beach, above upper Newport Bay Comment
  RSA698374  Plantago erecta Jeanne Paxton 1934-3-11 s.n. Orange Sugar Loaf Canyon - Arch Beach. Comment
  RSA759  Plantago erecta J. T. Howell 1928-3-17 868 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  UC484111  Plantago erecta E. R. Johnson 1929-4-11 Orange Sierra Peak Trail Santa Ana Mts. Comment
  UCR138329  Plantago erecta R. E. Riefner Jr. 2000-3-14 20- 135 Orange Santa Ana Mtns., North Ranch Policy Plan Area, Along dirt road running N from Baker Canyon Road 305 Comment
  RSA542454  Plantago indica Fred M. Roberts 1987-6-30 3469 Orange Bolsa Chica Salt Marsh: Pacific coast Hwy, 0.8kim SE Warner. 2 Comment
  UCR193367  Plantago lanceolata A. C. Sanders, T. B. Salvato 2008-5-13 35345 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence 366 Comment
  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
  UCSB52420  Plantago major Roberts, Fred; Marsh, K. 1982-10-18 Orange Laguna Beach; east flank of Temple Hill, along east margin of Top of the World School 295 Comment
  POM47661  Plantago ovata var. insularis F. W. Peirson 1924-5-31 4668 Orange 5 miles southeast of Laguna Beach. Comment
  IRVC28915  Plantago rhodosperma Fred M. Roberts, Karlin G. Marsh 1988-4-25 3931 Orange San Joaquin Hills: E flank Pelican Hill, 0.9km SE summit. Southern Coastal 120 Comment
  RSA698371  Platanus racemosa Minor Warne 1934-03 s.n. Orange Gypsum canyon Comment
  SD234464  Platanus racemosa A. C. Sanders, Fred M. Roberts 2008-7-3 35700 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, along Windy Ridge Rd at wash crossing, 0.95 mi. SE of Walnut Canyon Reservoir (Black Star Canyon 7.5' Q) 242 Comment
  SEINET5642642  Platanus racemosa Shelby J. Wood 2013-3-9 13 Orange Huntington Beach, Central Park.; 0 Comment
  CAS-BOT-BC92244  Platystemon californicus D. E. Breedlove 1962-3-9 1799 Orange 4.4 miles east of San Juan Capistrano on State 74. 112 Comment
  CAS-BOT-BC92245  Platystemon californicus Carl B. Wolf 1932-3-14 2713 Orange Rancho Santa Ana Botanic Garden, near the Chrysothamnus beds. 192 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
  RSA254976  Pluchea odorata C. W. Tilforth 1975-9-6 1048 Orange Upper Bay, Newport Beach: North-east shoreline. Comment
  RSA302005  Pluchea odorata J. R. Shevock 1972-9-27 2282 Orange Newport Beach Bay. 3 Comment
  RSA472126  Pluchea sericea Albert J. Perkins 1920-6-12 s.n. Orange Near Serra. Comment
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Nov 1 2013
  RSA932  Pluchea sericea J. T. Howell 1927-7-21 456 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  IRVC17048  Poa annua Bruce Reynolds 1965-4-19 s.n. Orange Newport Beach; Corona del Mar, Corona Del Mar High School. Southern Coastal Comment
  SEINET3123526 Image available Poa annua A. C. Sanders, T. B. Salvato 2008-1 35357 Orange Peninsular Range; Santa Ana Mtns.; Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  UCSB57140  Poa secunda subsp. secunda Marsh, G.; Marsh, K. 1978-5-20 Orange Santa Ana Mts., NE portion of Coal Canyon 335 Comment
  IRVC25471  Polycarpon depressum Fred M. Roberts 1987-4-21 3376 Orange Aliso Creek, Aliso Creek Bike Trail, 3.0km ENE Moulton Peak, Aliso Viejo 73 Comment
  UCR219804  Polycarpon tetraphyllum 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
  UCSB50635  Polygala californica Roberts, Fred 1982-7-9 Orange SANTA ANA MTNS.: Upper Hot Springs Canyon, 0.1km SW Falcon Group Camp: 2.0km SE Los Pinos Peak 327 Comment
  RSA5379  Polygala cornuta var. fishiae B. D. Stark 1932-12-30 4460 Orange Rancho Santa Ana, 1/4 mile W of Roundtop. 457 Comment
  UC1608266  Polygala cornuta var. fishiae Steve Boyd and Tim Ross 1992-5-20 7478 Orange w edge of wilderness Southern Santa Ana Mountains, San Mateo Canyon Wilderness Ar (along foot trail upstream from end of old roadgrade to upper homestead (corrugated steel building), along stream) 350 Comment
  POM201772  Polygonum argyrocoleon L. M. Booth 1932-7-25 s.n. Orange Santa Ana River 2 miles from ocean. Comment
  RSA749041  Polygonum aviculare A. C. Sanders, Fred M. Roberts 2008-8-7 35972 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  UCR99858  Polygonum aviculare Scott D. White 1993-3-5 1126 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  CAS-BOT-BC414039  Polygonum aviculare subsp. aviculare Alma Sweet 1919-1-1 s.n. Orange Unspecified Comment
  CAS-BOT-BC414041  Polygonum aviculare subsp. aviculare Ira L. Wiggins 1966-3-31 20570 Orange Along shoulder of Brea Olinda Boulevard near Carolina Avenue, just outside the city limits of Fullerton Comment
  RSA195  Polygonum hydropiperoides J. T. Howell 1927-7-5 268 Orange West side, Rancho Santa Ana [Botanic Garden]. 152 Comment
  RSA6067  Polygonum hydropiperoides Carl B. Wolf 1932-6-13 3719 Orange Storm drain at Malvern and Nicholas Aves; Fullerton. 53 Comment
  RSA683223  Polygonum hydropiperoides Scott D. White, Matt Carlton 2003-11-20 9868 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (Dana Point) 24 Comment
  UCR150563  Polygonum lapathifolium Scott D. White, Matt Carlton 2003-11-20 9869 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 24 Comment
  UCR193844  Polygonum lapathifolium A. C. Sanders, Fred M. Roberts 2008-7-16 35872 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 370 Comment
  RSA689928  Polypodium californicum Albert J. Perkins 1913-3-6 s.n. Orange San Juan Hot Springs Comment
  SD262146  Polypodium californicum R. E. Riefner Jr. 2017-3-31 17 137 Orange City of San Clemente, San Clemente State Beach, NW bluff area immediately S of Ave. Calafia. 24 Comment
  UC314549  Polypodium californicum Marcus E. Jones 1925-3-13 Orange Santa Ana Canyon 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
  IRVC23141  Polypogon interruptus Fred M. Roberts 1985-7-10 2006 Orange Capistrano Beach: San Juan Creek, 0.5km from the ocean, 0.2km N of Pacific Coast Highway. southern coastal 2 Comment
  RSA697712  Polypogon monspeliensis J. Russell Bruff 1930-10-19 s.n. Orange Santa Ana River bed. Comment
  RSA696614  Polypogon monspeliensis Rankin s.n. Orange Costa Mesa. Comment
  IRVC25447  Polystichum imbricans subsp. curtum Fred M. Roberts, K. G. Marsh 1987-5-14 3439 Orange Santa Ana Mtns: Upper Trabuco Canyon, Trabuco Canyon Trail, 1.3km NE Los Pinos Peak. Peninsular Ranges 1231 Comment
  RSA644958  Populus balsamifera subsp. trichocarpa R. E. Riefner, Adrian Wolf 2000-1-24 20 -116 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N of Saniago Creek and immediately N. of major stream fork. 305 Comment
  RSA581439  Populus trichocarpa Fred M. Roberts Jr., Gordon Marsh 1989-5-12 4358 Orange Santiago Canyon, Flemming Regional Park, just E of Modjeska at end of paved road, ca. 3.0 km WSW Laurel Springs. 436 Comment
  RSA603349  Populus trichocarpa Scott D. White, B. Leatherman 1997-6-12 5327 Orange 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. 46 Comment
  SD187474  Populus trichocarpa R. E. Riefner Jr 2007-6-12 07 253 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek 35 Comment
  CAS-BOT-BC356151  Porophyllum gracile John Thomas Howell 1929-3-2 4097 Orange In hills on n. side of Santa Ana Canon [Canyon], 1/2 mile east of Horseshoe Bend 152 Comment
  CAS-BOT-BC445244  Portulaca oleracea Ira L. Wiggins 1965-11-7 20360 Orange Vacant lot between State College Blvd. and Troy High School campus, Fullerton. Comment
  RSA780831  Potentilla glandulosa subsp. glandulosa Sandy Leatherman 2011-6-2 2011 -19 Orange Peninsular Ranges; Chino-Puente Hills region: 50 meters west of Carbon Canyon Road and Lions Canyon Road in Carbon Canyon in the City of Brea 273 Comment
  UCR156568  Prosopis velutina Karlin G. Marsh 1983-9-21 s.n. Orange San Juan Capistrano 183 Comment
  RSA650384  Prunus Jack D. Ingwersen 1962-5-12 s.n. Orange Anaheim Comment
  RSA613774  Prunus caroliniana B. Pitzer, M. Georgiady 1997-4-5 3078 Orange San Joaquin Hills Crystal Cove State Park, along No Dogs Trail (from parking area, along western bottom edge of ridge between Muddy Canyon and Moro Canyon), to just below intersection with Poles trail 152 Comment
  UC1128385  Prunus ilicifolia A. Lewis Apr 1934 384 Orange Harding Canyon; Cleveland National Forest 762 Comment
  JEPS20431  Pseudognaphalium biolettii L. M. Booth 1932-5-19 1067 Orange Newport Bay Comment
  SBBG119614  Pseudognaphalium leucocephalum F. M. Roberts 2003-7-24 5963 Orange San Juan Crk, ca. 0.1 km NE of La Novia Bridge, San Juan Capistrano 27 Comment
  SD187363  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-3-21 07 157 Orange San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek. 31 Comment
  SD240897  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2011-10-19 11 147 Orange City of San Juan Capistrano, San Juan Creek, ca. 0.2 mi W of intersection of Paseo Tirador and Calle Arroyo Street. 31 Comment
  UC2027329  Pseudognaphalium leucocephalum Robert Lee Allen 2012-8-11 Orange Santa Ana Mts, Caspers Wilderness Park, Bell Canyon. Comment
  RSA722094  Pseudognaphalium leucocephalum R. E. Riefner 2007-2-13 07 -55 Orange City of San Juan Capistrano, vicinity of La Novia Ave. and San Juan Creek. 31 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
  UCR138385  Pseudognaphalium luteoalbum Scott D. White, Brian Leatherman 1997-6-12 5313 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
  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
  UC520305  Pseudognaphalium ramosissimum Joseph Andorfer Ewan 1932-7-28 7689 Orange Corona del Mar Comment
  IRVC1817  Pseudosasa japonica V. Riley 1967-2-21 Orange Balboa Island. southern coastal Comment
  IRVC25185  Pseudotsuga macrocarpa Fred M. Roberts, Robert Fisher 1986-10-28 3167 Orange Upper Horsethief Canyon, Main Divide Truck Trail, 1.9km SE Trabuco Peak, Santa Ana Mountains 1219 Comment
  UCR144742  Pseudotsuga macrocarpa A. S. Boughey 1965-3-16 75 Orange Santa Ana Mtns., Silverado Canyon Comment
  RSA580938  Psilocarphus brevissimus D. Bramlet 1995-4-29 2401 Orange Fairview Park, Costa Mesa. 366m N of intersection of Wilson and Cyn drive and 152 m W of the Cyn School. 43 Comment
  RSA799621  Psilocarphus brevissimus var. brevissimus Justin M. Wood 2011-4-12 3653 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  RSA588710  Psilocarphus tenellus Fred M. Roberts 1990-5-22 4640 Orange Santa Ana Mountains; Upper Hot Springs canyon, just west of Falcon Group Camp, 1.9km ESE Los Pinos Peak. 994 Comment
  UCR132512  Psilotum nudum A. C. Sanders, Mark A. Elvin 2003-11-9 27356 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  UCR174209  Psoralea macrostachya A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33029 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
  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
  RSA733702  Pteridium aquilinum Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts 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
  RSA588892  Pteridium aquilinum var. pubescens Fred M. Roberts 1990-6-4 4662 Orange Santa Ana Mts. Hall Canyon, 1.8 km NNW Mustand Spring at east edge of flying B Ranch. 421 Comment
  CAS-BOT-BC362145  Pulicaria paludosa Robert L. Pope 1960-7-9 s.n. Orange Roadside approximately 0.5 mile north of Yorba Linda turnoff, Santa Ana Canyon Comment
  CDA7144  Pulicaria paludosa D. G. Kelch 2006-12-9 6 .57 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  CDA7617  Pulicaria paludosa Robert L. Pope 1959-8-14 Orange Ray Miller property, Santa Ana Canyon, east of Fullerton. 0 Comment
  RSA683921  Pulicaria paludosa Scott D. White, Matt Carlton 2003-11-20 9863 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (San Juan Capistrano). 24 Comment
  RSA234485  Pulicaria paludosa James Henrickson 1970-9-5 5352 Orange 3 miles NW of Huntington Beach. 1 Comment
  UCD47705  Quercus X acutidens John M. Tucker 1941-5-30 256 Orange Low shrub, in San Juan Canyon, 200 yards west of San Juan Guard Station, Highway 74, Orange County, California. Comment
  RSA12362  Quercus X grandidentata E. R. Johnson 1934-1-6 5562 Orange Santa Ana Mts., on slopes of Sierra Peak at about the head of Claymine Canyon. 762 Comment
  POM10465  Quercus agrifolia E. A. Zumbro 1904-5-9 417 Orange Laguna - first right land canyon coming up from Laguna Beach Comment
  RSA697622  Quercus agrifolia Unspecified s.n. Orange Orange County park. Comment
  RSA702202  Quercus agrifolia var. agrifolia Fred M. Roberts, David E. Bramlet 2003-6-20 5923 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, tributary to Christianitos Cyn, along Back Road, 1.48 km WNW Sycamore Gate. 189 Comment
  IRVC24546  Quercus berberidifolia Fred M. Roberts, R. L. Allen 1985-8-19 2130 Orange Mission Viejo: lateral to Engilish Canyon along Vista de Lago Drive; 3.4km ENE El Toro Fire Station. Southern Coastal 218 Comment
  RSA642705  Quercus berberidifolia R. E. Riefner Jr. 2000-3-19 20 -144 Orange NCCP North Ranch Policy Plan Area. Main Divide Road; top of Gypsum Canyon, Windy Ridge. 518 Comment
  UCR231345  Quercus berberidifolia A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39935 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1152 Comment
  UCR246514  Quercus berberidifolia Fred M. Roberts 2013-5-30 7779 Orange Lomas de Santiago, Santiago Creek Wash, at Santiago Canyon Road bridge, south side, 0.3 km west of the junction of Silverado and Santiago Canyon Roads 299 Comment
  RSA0041588  Quercus berberidifolia E. R. Johnson 1933-11 5558 Orange Rancho Santa Ana. Comment
  RSA679221  Quercus chrysolepis Fred M. Roberts 2003-6-25 5945 Orange Santiago peak, north slopes along ridge east of Main Divide truck trail, 0.6km NNW summit. 1605 Comment
  UCSB52402  Quercus cornelius-mulleri Roberts, Fred 1981-4-11 Orange Santa Ana Mtns.; Long Cyn. along road 1.0 km. W Calif. 74; 2.3 km. SE Blue Jay Camp Ground 800 Comment
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Dec 6 2016
  RSA584719  Quercus dumosa Fred M. Roberts, Wade 1989-6-21 4391 Orange San Joaquin Hills; Los Trancos Canyon, 1km E summit of Pelican Hill. 98 Comment
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Oct 16 2013
  CDA32098  Quercus ilex 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 Comment
  CAS-BOT-BC105117  Quercus kelloggii J. K. Munhall; S. E. Gooden 1945-11-8 11511 Orange head of Horsethief Canyon 1143 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
  UC1135890  Quercus wislizeni A. Lewis Mar 1934 363 Orange Head of Silverado Canyon Cleveland National Forest, Corona Quad. 1112 Comment
  UCR113448  Quercus wislizeni var. frutescens R. E. Riefner Jr. 2000-4-13 20- 361 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, upper drainage of Fremont Canyon near National Forest boundary, south of Claymore Mine 610 Comment
  RSA0058056  Rafinesquia californica Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49605 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  POM293  Ranunculus californicus D. L. Crawford s.n. Orange Near Laguna Beach Comment
  RSA0015962  Ranunculus californicus Fred M. Roberts 2012-4-24 7531 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
  RSA542414  Ranunculus californicus Fred M. Roberts 1987-4-3 3347 Orange Irvine: San Joaquin Hills, Central Shadey Canyon, 2.8 kilometers NE Signal Peak. 109 Comment
  IRVC1135  Raphanus sativus C. Duncan 1965-4-3 Orange Newport Beach Comment
  CSUSB564  Raphanus sativus Sally Bell 1964-5-10 Orange Corona Del Mar, at the State Park Beach, growing at bottom of steps in sandy soil along with Mesembryanthemum crystallinum. Comment
  RSA651170  Raphanus sativus Norman Willis 1948-2-8 s.n. Orange 2 miles E of Orange 60 Comment
  UCR188929  Rauvolfia samarensis Robert DeRuff 2007-11-24 s.n. Orange Newport Beach, Upper Newport Bay, above Back Bay Drive in the vicinity of the Narrows, c. 0.8 km north of Big Canyon 26 Comment
  CDA1075  Rhamnus alaternus D. G. Kelch 2006-12-9 6 .546 Orange Along Newport Back Bay Dr. in side canyon. Comment
  RSA769339  Rhamnus californica E. W. Lathrop 1974-6-27 7412 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA797378  Rhamnus californica Minor Warne 1934-4-7 12 Orange Ladd Canyon Comment
  RSA391107  Rhamnus ilicifolia H. L. Bauer 1929-4-20 s.n. Orange Trabuco Canon. Comment
  SBBG27367  Rhamnus ilicifolia P. C. Everett 1935-6-17 Orange Coldwater Cyn, 0.5 mi above Glen Ivy Resort 457 Comment
  UC1094403  Rhaponticum repens John W. Ingram 1953-12-1 Orange 2 mi n, on State Highway 39 Huntington Beach Comment
  UC484250  Rhus C. B. Wolf 1931-3-6 Orange 1 1/2 mi below Trabuco Camp grounds (Trabuco Canyon, w slope Santa Ana Mountains); Santa Ana Mountains 548 Comment
  POM257050  Rhus integrifolia W. Pequegnat 1940-5-26 s.n. Orange Black Star Canyon, Santa Ana Mts. 609 Comment
  RSA0073655  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.a. 150 meters SE Interpretive Center. 50 Comment
  RSA386362  Rhus integrifolia Albert J. Perkins 1923-6-28 s.n. Orange Negre Canon Beach, Santa Ana. Comment
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Nov 1 2013
  UCD170237  Rhus integrifolia K. M. Meyer; A. Townesmith 2007-3-10 8 Orange Cleveland National Forest, 3 mi. N of Main Divide Rd./NF3S04, off Hwy. 74. 950 Comment
  UCR131882  Rhus laurina J. Mallory, V. McCoy 1995-7-3 6454- 97 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
  RSA13147  Rhus ovata Percy C. Everett 1935-6-19 7240 Orange Trabuco Canyon, 2 mi. above E Forest Service Patrol Station. 762 Comment
  RSA16710  Rhus ovata C. B. Wolf 1934-9-21 6138 Orange Silverado Canyon, at base of Silverado motorway, W slope Santa Ana Mountains. 732 Comment
  RSA171932  Rhus ovata R. F. Thorne 1963-7-26 32857 Orange Tin Mine Canyon above Beek s Spring, Trabuco District, Cleveland National Forest. 732 Comment
  RSA731004  Rhus ovata Fred M. Roberts, B. Allen, D. Olsen 2007-1-19 6506 Orange Beek s Place along Main Divide Rd., 4.1 km NW Pleasant Peak. Abandoned homestead with persistant conifer plantings, some species spreading into surrounding chaparral. 852 Comment
  UCR76183  Rhus ovata B. G. Pitzer, S. Hemstreet 1992-5-27 1960 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
  UCSB47593  Rhus ovata Roberts, Fred 1980-4-5 Orange Highway 74, San Juan Canyon, 0.4 km. SW Lower San Juan Picnic Ground, Santa Ana Mountains 390 Comment
  UC484258  Ribes californicum var. hesperium C. B. Wolf 1931-3-6 1849 Orange 1 mi below Trabuco Camp Ground; Santa Ana Mts., Trabuco Canyon 609 Comment
  SD247655  Ribes californicum var. hesperium R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49693 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA0024854  Ribes cereum L. C. Hull 1934-2-11 s.n. Orange Black Star Canyon Rd. Comment
  LA205445  Ribes indecorum C. B. Wolf; 1931-3-6 1833 Orange Santa Ana Mountains, 1.5 mi. below Trabuco Oaks along Trabuco Canyon road, W slopes Comment
  RSA439665  Ribes indecorum E. Crow 1929-2-22 213 Orange Gypsum Canyon, Santa Ana Mountains. Near Corona. Comment
  POM9115  Ribes indecorum P. A. Munz, R. D. Harwood 1920-4-24 3750 Orange Santa Ana Mountains, Sierra [Freemont] Canyon 366 Comment
  PASA2256  Ribes malvaceum Frank W. Peirson 1923-5-6 Orange Santiago Peak. Holy Jim Trail near spring 1142 Comment
  UCD169741  Ribes malvaceum var. viridifolium R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49706 Orange Northern Santa Ana Mountains: Sierra Peak. 899 Comment
  UCR241071  Ribes malvaceum var. viridifolium Dick Newell, Judy Booth 2013-3-24 323 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, on Maple Springs Rd./Silverado Cyn. Rd., 1.5 miles above Maple Springs gate 673 Comment
  UC718384  Ribes roezlii P. C. Everett 1935-6-18 7215 Orange summit Santiago Pk.; Santa Ana Mts. 1731 Comment
  RSA0054906  Ribes sanguineum var. glutinosum G. Jentges 1932-3-5 21 Orange In wild plot east of Science Bldg. [Most likely Santa Ana Jr. College]. Comment
  RSA539409  Ribes speciosum Fred M. Roberts, Karlin G. Marsh 1989-3-7 4198 Orange Lomas De Santiago: Lomas Ridge, Tributary to Hicks Canyon, 2.3 km W Bee canyon. 157 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
  RSA733954  Ribes speciosum Unspecified 1934-2-11 s.n. Orange Black Star Canyon Rd. Comment
  RSA734161  Ribes speciosum Keith E. Hoffmaster 1931-4-22 520 Orange Santa Ana Mts. Comment
  UCD102509  Ribes speciosum P. B. Kennedy 1925-1-12 s.n. Orange Irvine Range. Comment
  UCR151029  Ribes speciosum Scott D. White 1997-5-6 5038 Orange Peninsular Ranges; Santa Ana Mtns., Lomas de Santiago; Santiago Canyon area; unnamed tributary to Santiago Creek flowing from the SW, directly west of Pancho Canyon 396 Comment
  UCR186138  Ricinus communis T. B. Salvato, Katie Kurtz 2006-10-15 1918 Orange South Coast, Irvine, San Diego Creek flood control channel, near Michelson Drive and Harvard Avenue 6 Comment
  RSA0042758  Ricinus communis Grace Adams 1938-5-30 s.n. Orange Santiago Creek. Comment
  RSA648947  Ricinus communis Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-15 24 Orange 1/2 mile south of Chino Hills State Park. 167 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
  POM201689  Romneya coulteri L. M. Booth 815 Orange Santa Ana Canyon Comment
  UCD96083  Romneya coulteri H. M. Hall 1913-5-28 9401 Orange Santiago Canon. 182 Comment
  CAS-BOT-BC92181  Romneya coulteri var. coulteri Le Roy Abrams 1901-6-1 1852 Orange Trabuco Canon [Canyon]. Comment
  RSA734658  Rosa californica A. C. Sanders, Fred M. Roberts, A. O'Neal, D. E. Bramlet 2008-5-9 35294 Orange Weir Canyon, c. 1.1 mi. E of Walnut Cyn Reservoir. 277 Comment
  UCR16768  Rosa californica Dave Cerf 1971-5-2 s.n. Orange Orange Park Acres. Windes Dr. 0.5 mile SW of end of road 244 Comment
  UCR236676  Rosa californica Fred M. Roberts 2008-6-12 7038 Orange Santa Ana Mtns. Foothills, Lomas de Santiago; Loma Ridge, Shoestring Canyon, Shoestring Road near jct. with Santiago Cyn. Rd. 251 Comment
  RSA0045576  Rosa californica Minor Warne 1934-4-21 s.n. Orange Limestone Canyon by Scout Camp. Comment
  UCR26630  Rubus ursinus E. W. Lathrop 1966-5-1 6259 Orange Santa Ana Mtns., 5 mi east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest 400 Comment
  RSA5814  Rumex conglomeratus Carl B. Wolf 1932-6-28 3806 Orange Bryant Ranch: Edge of field on Bixby Ave. 9 Comment
  SBBG128391  Rumex obtusifolius A. C. Sanders, F. M. Roberts 2008-7-7 36004 Orange Weir Cyn at powerline crossing, 1.0 mi (air) SSE of Walnut Cyn Reservoir; Santa Ana Mtns 226 Comment
  UCR258357  Rumex stenophyllus Fred M. Roberts 2014-4-21 7857 Orange South Coast, SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin 113 Comment
  RSA539402  Rupertia physodes Fred M. Roberts, Carol A. Roberts 1988-6-2 4045 Orange Santa Ana Mtns: Maple Springs Truck Trail, 11.5km above Silverado Gate, 1.1km NNW Modjeska Pk. 1350 Comment
  HSC25555  Ruppia maritima James Henrickson 1970-7-24 5023 Orange 3 mi. NW of Huntington Beach, Inner Bolsa Bay, along margins of bay 0 Comment
  POM48698  Salicornia bigelovii I. M. Johnston 1924-8-29 s.n. Orange 2.5 miles north of Balboa. Comment
  JEPS73722  Salicornia virginica L. R. Heckard with T. I. Chuang and R. Bacigalupi 1968-7-16 2043 Orange n of Newport Beach (across U.S. Highway 101 from Huntington State Beach); Bolsas Marsh Comment
  RSA357005  Salicornia virginica R. F. Thorne 1975-4-6 45568 Orange San Joaquin Marsh: Near Irvine and coast. Comment
  UC1136468  Salicornia virginica A. Lewis Apr 1934 388 Orange Celery Corona Quad. 0 Comment
  UC455214  Salicornia virginica I. J. Condit 1908-7-20 Orange Los Alamitos Comment
  RSA478907  Salicornia virginica Anstruther Davidson 1902-09 s.n. Orange Newport Beach. Comment
  RSA698842  Salix argophylla Unspecified s.n. Orange Arch beach Comment
  CAS-BOT-BC129738  Salix bonplandiana Carl B. Wolf 1932-4-8 2949 Orange Rancho Santa Ana, near Santa ana River, Santa Ana Canyon 120 Comment
  POM201876  Salix exigua L. M. Booth 1932-7-19 1281 Orange Bolsas Marsh. Comment
  POM201933  Salix exigua L. M. Booth 1932-6-9 1177 Orange Santa Ana River, 1 mile from ocean. Comment
  RSA4248  Salix exigua Carl B. Wolf 1932-4-15 2954 Orange Rancho Santa Ana, near Santa Ana River and south of pear orchard, Santa Ana Canyon. 122 Comment
  UC492440  Salix exigua var. hindsiana Carl B. Wolf 1932-7-7 3843 Orange near town of Los Alamitos (Rancho Santa Ana along ditch on Bixby Ave., 1 km. w of Hansen Rd., Bryant Ranch) Comment
  CAS-BOT-BC108131  Salix gooddingii L. R. Abrams 1901-6-1 1763 Orange Santa Ana River west of Santa Ana Comment
  CAS-BOT-BC6083  Salix gooddingii LeRoy Abrams 1903-4-16 3256 Orange Santa Ana River between Fullerton and Orange Comment
  IRVC29700  Salix gooddingii Mark A. Elvin, Barry S. Nerhus 2006-11-4 5241 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA137  Salix gooddingii J. T. Howell 1927-7-24 394 Orange Santa Ana River bottom near Rancho Santa Ana. 152 Comment
  UCR16418  Salix gooddingii J. S. Davis 1972-4-1 7 Orange Newport Beach. 3.2 mi N on Back Bay Road from corner of San Jaquin Hills Road. on back edge of turnout. 6 Comment
  RSA0010963  Salix gooddingii Keith E. Hoffmaster 1934-07 107 Orange n. Costa Mesa. CP3. 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
  LA208694  Salix laevigata Carl Hedin; Joseph Ewan 1932-7-9 7680 Orange Santa Ana River 8 km below Prado (Rincon) [Area 7] Comment
  LA208698  Salix laevigata Carl Hedin; Joseph Ewan 1933-3-19 7684 Orange Santa Ana River 8 km below Prado (Rincon) [Area 7] Comment
  LA208724  Salix laevigata Carl B. Wolf; 1932-4-8 2949 Orange Santa Ana Canyon, Rancho Santa Ana, near Santa Ana River, at SE corner of pear orchard in Botanic Garden 120.0 Comment
  RSA679094  Salix laevigata Fred M. Roberts 2003-7-24 5965 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
  RSA0126624  Salix lasiolepis Fred M. Roberts 2012-4-24 7507 Orange San Joaquin Hills: Buck Gully, W of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km W Signal Peak. 179 Comment
  RSA5309  Salix lasiolepis B. D. Stark 1933-1-7 4508 Orange Rancho Santa Ana, river bottom below ranch houses. 122 Comment
  RSA700179  Salix lasiolepis Minor Warne 1934-2-1 s.n. Orange Santa Ana River bed Comment
  UC498103  Salix lasiolepis L. M. Booth 1932-12-1 1384 Orange Santa Ana River; near mouth, about 3/4 mi from ocean Comment
  UCR26634  Salix lasiolepis E. W. Lathrop 1966-3-23 6101 Orange Santa Ana Mtns, Cleveland National Forest, Trabuco District. 4 mi. NE of Lake Irvine, Black Star Canyon Comment
  CAS-BOT-BC128467  Salix lasiolepis var. lasiolepis John Thomas Howell 1927-7-14 2771 Orange Santa Ana River bottom, Santa Ana Canyon [Canon] 152 Comment
  RSA488136  Salix lucida subsp. lasiandra Fred M. Roberts Jr. 1985-8-23 2176 Orange Mission Viejo: Oso Pkwy., ca. 1.8km E San Diego Fwy. 133 Comment
  CAS-BOT-BC126308  Salix sessilifolia Carl B. Wolf 1932-4-15 2953 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon 120 Comment
  UCR239631  Salsola australis Fred M. Roberts 2012-4-24 7513 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  RSA750007  Salsola tragus A. C. Sanders, Fred M. Roberts 2008-9-18 36080 Orange Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 320 Comment
  RSA728671  Salsola tragus R. E. Riefner 2006-11-14 6 -672 Orange City of Irvine, San Diego Creek; vicinity of Campus Ave. at University Dr. 5 Comment
  RSA697874  Salvia apiana L. C. Hull 1934-4-27 s.n. Orange Trabuco Canyon. Comment
  RSA751323  Salvia apiana A. C. Sanders, Fred M. Roberts, Amber O Neal 2008-5-9 35292 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir. 300 Comment
  IRVC26432  Salvia californica Mark A. Elvin 2004-2-22 3152 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA697878  Salvia columbariae Dorothy Sammis s.n. Orange Orange County park. Comment
  RSA653189  Salvia leucophylla David Barrios 1991-5-8 22 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 366 Comment
  HSC14367  Salvia mellifera T. L. Ackerman 1964-3-28 10 Orange Irvine Park Dr. inside Irvine Park Comment
  JEPS62752  Salvia mellifera Alice King Apr 1908 Orange Santiago Creek; Santa Ana Mts. Comment
  OBI30186  Salvia mellifera Diane Terrell 1969-4-30 110 Orange At Tucker Wildlife Sanctuary in Modjeska Cyn 427 Comment
  RSA650628  Salvia mellifera Daniel Truong 1991-5-13 23 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  RSA658202  Salvia mellifera T. A. Daubert 1991-5-19 652 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  RSA731981  Salvia mellifera A. C. Sanders 2008-4-8 34779 Orange Peninsular Range: Lomas de Santiago, SSE os f Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon. 475 Comment
  SBBG45102  Salvia mellifera E. R. Johnson 1935-1-14 Orange open firebreak on slopes of Sierra Pk, along rd to Claymine Cyn 609 Comment
  SFV3231  Salvia mellifera A. M. Johnson 1932-4-23 4028 Orange Dry hills north of Orange. Comment
  UC1124830  Salvia mellifera A. Lewis May 1934 429 Orange Los Pinos Peak; Cleveland National Forest, Elsinore Quad. 1310 Comment
  UCR106308  Salvia mellifera B. G. Pitzer, M. Georgiady 1997-4-5 3098 Orange San Joaquin Hills, Crystal Cove State Park, portion across highway on the beach, bluffs immediately above beach and adjacent terraces for southeast end of park. 24 Comment
  UCR220026  Salvia mellifera 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
  IRVC26757  Sambucus mexicana Peter A. Bowler 2003-4-26 s.n. Orange UC San Joaquin Freshwater Marsh Reserve; along marsh road. Southern Coastal 6 Comment
  RSA0043352  Sambucus mexicana David Barrios 1991-5-8 26 Orange 1500 ft. northwest of Fairmont Ave and Quail Cir., Yorba Linda. 365 Comment
  RSA748256  Sambucus mexicana A. C. Sanders, Fred M. Roberts 2008-6-17 35517 Orange Middle section of Weir Canyon, SSE of Walnut Canyon Reservoir. 225 Comment
  UCR106271  Sambucus mexicana B. G. Pitzer, M. Georgiady 1997-4-5 3094 Orange San Joaquin Hills, Crystal Cove State Park, portion across highway on the beach, bluffs immediately above beach and adjacent terraces for southeast end of park. 24 Comment
  UCR233745  Sambucus nigra Fred M. Roberts 2008-6-12 7039 Orange Santa Ana Mtns. Foothills, Lomas de Santiago; Loma Ridge, Shoestring Canyon, Shoestring Road near jct. with Santiago Cyn. Rd. 251 Comment
  CAS-BOT-BC238827  Sambucus nigra subsp. caerulea Carl B. Wolf 1934-9-21 6140 Orange Silverado Canyon, west slope of Santa Ana Mts., 3/4 mi. below foot of Silverado Motorway 548 Comment
  RSA640718  Sambucus nigra subsp. caerulea L. C. Wheeler 1931-8-16 s.n. Orange Santa Ana River 152 Comment
  SFV16186  Sambucus nigra subsp. caerulea R. K. Stachelek, B. Anderson, F. Schropshire 1995-3-1 41 Orange Newport Beach, west side of Upper Newport Bay adjacent to Santa Ana Delhi channel. About 100 m west of footbridge. 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
  RSA542458  Samolus parviflorus Fred M. Roberts 1987-8-6 3581 Orange San Joaquin Hills: Los Tracos Canyon, 0.9km ESE Pelican Hill. 78 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
  UCR209376  Sanicula bipinnatifida Fred M. Roberts, Linda Farley 2008-3-28 6819 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
  UCR192226  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 Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  IRVC15153  Sanicula crassicaulis var. crassicaulis A. S. Boughey 1965-3-16 73 Orange Silverado Canyon. Santa Ana Mountains Comment
  RSA471481  Sanicula graveolens Christopher Davidson 1977-5-18 5606 Orange Cleveland National Forest; Santiago Peak (on Orange-Riverside Co. line) 1706 Comment
  UCR56327  Scandix pecten-veneris Kathy Harper 1989-4-8 s.n. Orange Ronald W. Caspers Wilderness Area, along Bell Canyon Trail. 153 Comment
  RSA713566  Schedonorus arundinaceus R. E. Riefner Jr. 2005-10-1 5 -701 Orange City of Costa Mesa, South Coast Dr. at Susan Rd. 16 Comment
  UCR43573  Schinus terebinthifolius B. A. Prigge 1983-12-17 5520 Orange Santa Ana Marsh and adjacent lowlands. SE-most part of oil field just north of Pacific Coast Hwy between remnant Santa Ana River channel and dirt road 2 Comment
  CAS-BOT-BC243418  Schismus barbatus Ira L. Wiggins 1966-2-19 20458 Orange Hillside on W side of road, Carbon Canyon about 220 m. SW of Orange County Survey bench mark RCE 7872 Comment
  UCR186688  Schoenoplectus americanus T. B. Salvato, Katie Kurtz, Mitch Provance 2006-10-15 1909 Orange South Coast, Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Drive 6 Comment
  RSA96  Schoenoplectus americanus J. T. Howell 1927-6-30 239 Orange Bryant Ranch near Long Beach. 15 Comment
  POM12405  Schoenoplectus californicus Phillip A. Munz 1922-9-2 6351 Orange Ponds in Laguna Canyon 46 Comment
  RSA0058188  Schoenoplectus californicus Fred M. Roberts 2014-4-21 7872 Orange South Coast: San Joaquin Hills: Upper Laguna Lake 1 (upper Laguna Lake), south basin. 113 Comment
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Dec 15 2020
  UCR139138  Schoenoplectus californicus Scott D. White, Brian Leatherman 1997-6-12 5331 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
  RSA5934  Schoenoplectus californicus Carl B. Wolf 1932-7-7 3862 Orange Opposite the Bryant Ranch: on N side of Bryant Avenue, 0.5 mile east of Los Alamitos Boulevard near Los Alamitos. 8 Comment
  POM202161  Schoenoplectus maritimus L. M. Booth 1932-5-24 1104 Orange Marsh of salt marsh, Newport Lagoon. Comment
  RSA611873  Schoenoplectus maritimus L. C. Wheeler 1932-6-25 870 Orange Inland arm of Newport Bay. Sea level 0 Comment
  CAS-BOT-BC111820  Schoenoplectus tabernaemontani Helen D. Geis 1902-11-1 s.n. Orange Santa Ana Peat lands. Comment
  RSA703733  Scirpus microcarpus Fred M. Roberts, David E. Bramlet 2004-11-5 6131 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, Gato Cyn., tributary to Cristianitos Cyn., 0.23km W Gato Gate. 102 Comment
  UCR102628  Scrophularia californica B. G. Pitzer 1997-4-15 3148 Orange San Joaquin Hills, Crystal Cove State Park, north of the N end of the City of Laguna Beach. Along Moro Canyon Trail, from beginning to a point c. 1.75 mi. up the canyon. 49 Comment
  RSA425212  Scrophularia californica subsp. floribunda N. C. Cooper 1944-6-4 1371 Orange San Juan Canyon, lower camp ground. 457 Comment
  UCR209339  Scrophularia californica subsp. floribunda Fred M. Roberts 2008-4-22 6919 Orange Lomas de Santiago, Loma Ridge, Lower Hicks Canyon, along Haul Road near asphalt plant, 2.2 km east-northeast of Rattlesnake Reservoir Dam and 2.2 km west-northwest of Bee Peak, Irvine Ranch Conservancy 188 Comment
  SEINET12347787  Scrophulariaceae S. A. Thompson, Rawlins, J. E. 1988-8-27 5262 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  RSA82293  Scutellaria tuberosa F. W. Peirson 1923-3-25 3377 Orange Aliso Creek, near Laguna Beach. Near summit of a ridge about 200 ft. above the sea. 61 Comment
  RSA631395  Selaginella bigelovii Valerie Sosa, LeRoy Gross 1999-6-7 476 Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  RSA749437  Selaginella bigelovii Fred M. Roberts 2008-4-14 6891 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork, 3.4 km E Robbers Peak, Irvine Ranch Conservancy. 433 Comment
  SEINET10470958  Selaginella bigelovii John Thomas Howell 1927-7-22 Howell 2834 Orange Claymine Canyon, Santa Ana Mts., On hot and exposed opens between shrubs on very steep hillsides and in the cracks and crevices of sandstone outcrops, Upper Sonoran Zone. 185 Comment
  RSA539420  Senecio aphanactis Fred M. Roberts 1989-3-7 4200 Orange Lomas de Santiago: Loma Ridge, tributary to Hicks Canyon, 2.1km W Bee Survey Mark, UTM 37 32 300mN, 4 33 150mE, alt. 183 meters. 183 Comment
  IRVC894  Senecio californicus C. Weir 1965-4-17 Orange Newport Beach; Balboa Island. Southern Coastal Comment
  UC718547  Senecio californicus P. C. Everett 1935-3-15 6294 Orange near corner post 3938 (Rancho Santa Ana, Santa Ana Canyon); Rancho Santa Ana, Santa Ana Canyon 182 Comment
  LA203917  Senecio flaccidus var. douglasii W. E. Pequegnat; 1937-8-19 39 Orange Santa Ana Mountains, Trabuco Peak 1371 Comment
  UCR261688  Senecio flaccidus var. douglasii Dick Newell, Judy Booth 2014-8-10 383 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Maple Springs Rd./Silverado Canyon Rd., 2 miles due north of Modjeska Peak 815 Comment
  SD231235  Senecio linearifolius var. linearifolius Scott D. White 2003-7-7 9613 Orange Coastal plain: Irvine. UC Irvine Campus. Directly west of T-intersection of Shady Canyon Cr. w/Bonita Canyon Dr. (=Culver Dr.) 70 Comment
  SD232203  Senecio linearifolius var. linearifolius Scott D. White 2003-7-7 9613 Orange Coastal plain: Irvine. UC Irvine Campus. Directly west of T-intersection of Shady Canyon Cr. w/ Bonita Canyon Dr. (= Culver Dr.). 70 Comment
  CAS-BOT-BC364600  Senecio vulgaris Ira L. Wiggins 1966-2-25 20478 Orange Firestone Boy Scout Reservation E of Brea Comment
  UCR193016  Senecio vulgaris A. C. Sanders, Mitch Provance 2008-5-20 35412 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-BC364604  Senecio vulgaris Ira L. Wiggins 1966-2-18 20447 Orange Roadside near end of county road, 1/2 mi. W. of entrance to Rancho Santa Ana Comment
  RSA936  Senecio vulgaris J. T. Howell 1928-2-7 829 Orange Near the ranch houses, Rancho Santa Ana 152 Comment
  UCR130358  Senna didymobotrya A. C. Sanders, Mark A. Elvin 2003-10-12 27315 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  UCR240092  Senna didymobotrya Dick Newell, Judy Booth 2012-10-21 307 Orange South Coast, Laguna Canyon, on Park Ave. 1/3 mile SW of Hidden Valley Canyon Rd. 84 Comment
  IRVC24726  Senna multiglandulosa Fred M. Roberts 1986-5-14 2824 Orange Lomas de Santiago; Santiago Canyon Rd., 8.5km NW by road of Silverado Canyon Rd., Santa Ana Mountains 229 Comment
  POM765  Sesuvium verrucosum D. L. Crawford s.n. Orange Laguna Canon. Comment
  RSA610224  Sesuvium verrucosum Fred M. Roberts Jr., Julie Vanderwier 1997-4-22 5022 Orange Bolasa Chica Salt Marsh: (U. S. Fish Wildlife Service cell 60), west of old oil field, 0.8 km S Chica survey Mark. 0 Comment
  RSA728663  Setaria adhaerens R. E. Riefner 2006-10-8 6 -480 Orange City of Irvine, San Diego Creek, between Alton Pwky. and 405 Fwy 51 Comment
  CAS-BOT-BC243592  Setaria parviflora Carl B. Wolf 1932-6-13 3725 Orange Malvern and Nicholas Aves., Fullerton 53 Comment
  RSA697731  Setaria parviflora Rankin s.n. Orange Santa Ana. Comment
  RSA226767  Setaria verticillata I. L. Wiggins 1965-11-7 20361 Orange Vacant lot between State College Blvd. and Troy High School Campus, Fullerton. Comment
  RSA698173  Sidalcea malviflora R. H. McArthur 1934-3-25 s.n. Orange Paularino roadside. Comment
  CAS-BOT-BC205742  Sidalcea neomexicana subsp. thurberi LeRoy Abrams 1903-4-17 3257 -a Orange Between Tustin and Myford Comment
  CAS-BOT-BC384501  Silene antirrhina LeRoy Abrams 1903-4-18 3272 Orange Trabuco arroyo, near Capistrano Comment
  UCR191021  Silene antirrhina A. C. Sanders, Fred M. Roberts 2008-4-22 35011 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  IRVC22793  Silene gallica Fred M. Roberts 1985-5-16 1816 Orange mouth of Laurel Canyon, 4.0km SE Signal Peak, San Joaquin Hills 85 Comment
  RSA732075  Silene gallica A. C. Sanders, Fred M. Roberts 2008-3-25 34563 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA737534  Silene gallica Fred M. Roberts 2008-3-12 6728 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA749466  Silene gallica Fred M. Roberts 1999-4-22 5186 Orange Lomas de Santiago: tributary to Santiago Creek wash along spur road on ridge between Limestone Cyn. and Santiago Creek wash opposite Williams Cyn., 1.9 km SE Silverado Sch. and 2.2 km NNW Bolero Lookout. 395 Comment
  UC537161  Silene gallica Lawrence M. Booth 1932-5-12 1016 Orange Newport Bay Comment
  UCR192083  Silene laciniata A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35296 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  UCSB50630  Silene laciniata subsp. laciniata Roberts, Fred 1982-7-20 Orange Santa Ana Mtns.; Main Divide Extension, 3.0 km. by road NE Falcon Group camp; 3.4 km. E Los Pinos Peak 1027 Comment
  RSA438887  Silene laciniata subsp. major M. B. Dunkle 1934-6-18 3997 Orange San Juan Canyon 305 Comment
  RSA699745  Silene laciniata subsp. major Fred M. Roberts, David E. Bramlet 2003-5-15 5874 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 1.41km SSW Gato Gate and 0.35km NNW of SDG&E substation. 122 Comment
  IRVC7928  Silene multinervia A. S. Boughey 1968-4-23 208 Orange Black Star Canyon, .5mi below Hidden Ranch; area burned this winter. Santa Ana Mountains Comment
  RSA223404  Silene vulgaris Ed Johnson 1936-10 s.n. Orange Adventitions in orchard near Anaheim Comment
  RSA734809  Silybum marianum A. C. Sanders, Fred M. Roberts 2008-5-6 35269 Orange Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 366 Comment
  SD232231  Sinapis arvensis Scott D. White, Amanda Duchardt 2003-3-27 8849 Orange Santa Ana Mountain Foothills: Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  IRVC1178  Sisymbrium irio C. Duncan 1965-4-3 Orange Newport Beach Comment
  RSA336  Sisymbrium irio J. T. Howell 1928-2-7 819 Orange Near the ranch houses, Rancho Santa Ana 152 Comment
  RSA749361  Sisymbrium irio Fred M. Roberts 2008-4-15 6900 Orange Lomas de Santiago: Loma Ridge, Lower Hicks Cyn., east ridge, Conservation Trail, 1.6 km ESE Rattlesnake Reservoir dam and 2.7 km WSW Bee Peak, Irvine Ranch Conservancy. 172 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
  UCSB48238  Sisymbrium orientale Roberts, Jr., Fred 1981-5-3 Orange Santa Ana Mtns.; Hot Springs Canyon, just below Lazy W Ranch, 1.6 km. NNE San Juan Guard Station 249 Comment
  IRVC26967  Sisyrinchium bellum Peter A. Bowler 2003-4-20 s.n. Orange UC San Joaquin Freshwater Marsh Reserve; bluffs along NW edge of marsh. Southern Coastal 9 Comment
  RSA366973  Sisyrinchium bellum H. L. Bauer 1929-4-20 s.n. Orange Trabuco Canon. Comment
  POM4249  Solanum americanum Philip A. Munz 1918-5-4 2176 Orange Laguna Canyon. Comment
  HSC21299  Solanum douglasii J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  HSC21301  Solanum douglasii S. M. Clapp 1966-4-7 22 Orange 3 mi. from Modjeska Canyon towards Silverado Canyon 152 Comment
  RSA184193  Solanum douglasii I. L. Wiggins 1966-2-4 20413 Orange Trabuco Canyon, about 0.5 mi. above end of open road. Comment
  RSA221079  Solanum douglasii E. W. Lathrop 1966-5-1 6258 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland Nat'l Forest, Santa Ana Mountains. 396 Comment
  RSA743382  Solanum douglasii Fred M. Roberts 2008-5-27 7001 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  UC494729  Solanum douglasii Philip A. Munz 1932-3-29 12190 Orange Costa Mesa Comment
  UCD126938  Solanum douglasii B. Pitzer 1996-4-30 2762 Orange Upper Newport Bay: California Department Fish and Game Ecological Reserve, off (W of) Jamboree Rd. 6 Comment
  UCR194994  Solanum douglasii A. C. Sanders, Fred M. Roberts 2008-8-7 36003 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  UCR99872  Solanum douglasii Scott D. White 1993-3-5 1117 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  RSA422440  Solanum douglasii Claire Kibbe 1936-07 19966 Orange Santa Ana Canyon. Comment
  RSA450870  Solanum lanceolatum Gordon Marsh, Karlin G. Marsh 1976-4-8 s.n. Orange Tustin, First Street. Vacant lot west of Post Office. Comment
  UCR44897  Solanum nigrum B. G. Pitzer, L. F. LaPre 1986-10-20 317 Orange City of Irvine, Drainage channel near intersection of Irvine Blvd. and Sand Canyon Avenue. 91 Comment
  RSA2067  Solanum umbelliferum Carl B. Wolf 1931-3-6 1862 Orange North of base of Trabuco Modjeska Grade, west slope of Santa Ana Mts. 305 Comment
  RSA427454  Solanum umbelliferum M. B. Dunkle 1933-5-30 3576 Orange Santa Ana Canyon Comment
  RSA751319  Solanum umbelliferum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35284 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir. 300 Comment
  RSA80386  Solanum umbelliferum F. W. Peirson 1925-4-10 5737 Orange In Silverado Canyon. 610 Comment
  UCR230236  Solanum umbelliferum Dick Newell, Don Millar 2011-3-15 089 Orange Peninsular Range; Santa Ana Mtns., MWD Road, east of Outdoor Education Center, 1.8 miles NW (312 deg. ) of Irvine Lake dam 239 Comment
  RSA0045318  Solanum xanti Pomeroy 1929-2-10 72 Orange Silverado Canyon. PR8. Comment
  SEINET12274872  Solanum xanti J. F. Bright, Wyman, C. 1933-1 8094 Orange in Santa Ana foothills Comment
  POM18090  Solidago californica P. A. Munz 1923-9-7 7747 Orange Santiago Peak, Santa Ana Mountains. 1646 Comment
  POM50555  Solidago californica L. R. Abrams 1901-6-16 1851 Orange Trabuco Canyon Comment
  POM201703  Sonchus asper L. M. Booth 1932-7-19 1270 Orange Bolsas Marsh. Comment
  RSA234497  Sonchus oleraceus James Henrickson 1970-7-24 4954 Orange 1.5 miles NW of Huntington Beach, along border of Bolsa Chica Salt Marsh at SW end of Huntington Beach Mesa. 8 Comment
  UC537022  Sonchus oleraceus Lawrence M. Booth 1932-5-12 1012 Orange Newport Bay Comment
  UCR223419  Sonchus oleraceus Dick Newell, Don Millar 2011-3-1 065 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  UCR237816  Sonchus oleraceus Mark A. Elvin 2003-2-2 2290 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  RSA721116  Sonchus oleraceus Anonymous s.n. Orange Neglected city lot Comment
  POM201512  Sorghum bicolor L. M. Booth 837 Orange Santa Ana Canyon 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
  SEINET998621  Sorghum bicolor R. E. Riefner Jr. 2005-1 05 -710 Orange South Coast: Irvine, Irvine Blvd. at The Groves RD. (Tustin 7.5' Q) 84 Comment
  CAS-BOT-BC235341  Sorghum halepense Helen D. Geis 1902-1-1 557 Orange Unspecified Comment
  SEINET182547 Image available Sorghum halepense L. M. Booth 1932-1 1265 Orange Edge of field, Cota Mesa. Orange county. Comment
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Nov 1 2018
  CAS-BOT-BC235382  Spartina foliosa S. B. Parish; W. F. Parish 1882-10-1 1602 Orange Newport Bay Comment
  POM146217  Spartina foliosa F. M. Reed 1927-11-25 5676 Orange Anaheim Landing Comment
  RSA483174  Spartina foliosa Anonymous 1914-7-6 31 Orange Growing in salt marsh at Newport Comment
  UCR240099  Spartina foliosa Dick Newell 2012-9-29 297 Orange South Coast, Newport Beach, Back Bay Drive at Big Canyon parking area 2 Comment
  HSC15089  Spartium junceum S. M. Clapp 1966-4-3 4 Orange Union Oil Prop., just S of Imperial Hwy. and E of Associated Rd. 61 Comment
  IRVC2453  Spartium junceum L. Aldis 1965-3-27 s.n. Orange Black Star Canyon and Silverado Canyon Rds. Santa Ana Mountains Comment
  IRVC2459  Spartium junceum John Schram 1965-5-1 s.n. Orange Santa Ana Mtns; Hwy 74, 20 mi. E from San Juan Capistrano. Peninsular Ranges Comment
  RSA696548  Spergula arvensis Minor Warne 1934-03 s.n. Orange Laguna Canyon Forks Comment
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Jun 24 2009
  UCR157693  Spergularia Adrian Wolf 1998-5-15 277 Orange South Coast, Lambert Reservoir, north of El Toro Marine Corps Air Station 134 Comment
  UCR266419  Spergularia D. E. Bramlet 2009-11-27 4430 Orange South Coast, San Diego Creek between Irvine and Newport Back Bay 8 Comment
  IRVC20156  Spergularia bocconii R. L. Allen 1978-4-1 Orange 60m NE Golden Lantern [and Acapulco Rds.] jct. Dana Point Comment
  RSA0097845  Spergularia macrotheca E. R. Johnson 1927-6-10 76 Orange Bryant Ranch, near Long Beach. 15 Comment
  CAS-BOT-BC390310  Spergularia macrotheca var. macrotheca LeRoy Abrams 1903-4-17 3258 Orange Between Tustin and Myford Comment
  CAS-BOT-BC390853  Spergularia marina Carl B. Wolf 1932-7-2 3817 Orange Carbon Canyon, 1/8 mi. below La Vida Springs 213 Comment
  IRVC24998  Spergularia marina Fred M. Roberts, H. Camp & R. Fisher 1986-6-20 3022 Orange San Joaquin Freshwater Marsh, near Campus Dr., 1.7km NNW UC Irvine campus center, Irvine 2 Comment
  CAS-BOT-BC390854  Spergularia marina Carl B. Wolf 1932-6-28 3783 Orange Bryant Ranch, edge of field on Bryant Ave., 300 ft. west of north east corner of N.W.40 of S.E.160 of Sect. 27 T4S R11W Comment
  IRVC24744  Spergularia villosa Fred M. Roberts 1986-4-29 2822 Orange Turtle Rock, above corner of Ridgerout Dr. and Turtle Rock Dr., 1.1km SE French Hill, Irvine 141 Comment
  UCD63552  Sphaeralcea ambigua var. rosacea D. Sanchez-Mata 2006-7-1 s.n. Orange Laguna Niguel. Dana Point Highlands. Pacific Island Drive. 70 Comment
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Mar 23 2010
  RSA788911  Sporobolus indicus Fred M. Roberts 2008-9-17 7106 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
  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
  SBBG120829  Stachys rigida A. C. Sanders, F. M. Roberts, M. Balk 2006-7-20 33018 Orange San Juan Cyn, from lower San Juan Picnic Area to ca. 1 mi downstream, parallel to Hwy 74, near Riverside Co line 366 Comment
  POM4078  Stachys rigida subsp. quercetorum P. A. Munz 1918-5-4 2213 Orange Laguna Beach Comment
  RSA446585  Stachys rigida subsp. quercetorum Unspecified 1920-6-1 s.n. Orange Laguna. Comment
  RSA0026253  Stachys rigida subsp. rigida Fred M. Roberts 2013-6-12 7797 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
  UCR228809  Stachys rigida var. rigida Dick Newell, Don Millar 2011-7-19 209 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Dripping Springs 392 Comment
  UCR174220  Stachys stebbinsii A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33018 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
  RSA0106593  Stebbinsoseris heterocarpa Scott D. White 1998-3-18 6213 Orange UCI Campus: Site of proposed Research Park, Southwest of main campus circle, ca. halfway between Berkley Ave. and new Freeway (Bonita Cyn.). Plains dissected by a series of gullies. 37 Comment
  UCSB52928  Stebbinsoseris heterocarpa Roberts, Fred; Marsh, G. 1983-3-30 Orange UC Irvine Ecological Preserve, 1.6 km. SSW UCI campus center 87 Comment
  RSA743497  Stellaria media Fred M. Roberts 2008-3-19 6780 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8km W Marine Institute, Dana Point Harbor. 45 Comment
  CAS-BOT-BC393822  Stellaria media Ira L. Wiggins 1966-3-5 20518 Orange about 1/2 mi. W of El Toro Post Office, along Highway S-18 Comment
  UCR149387  Stephanomeria diegensis Scott D. White, Matt Carlton 2003-11-20 9878 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 37 Comment
  RSA232212  Stephanomeria diegensis James Henrickson 1970-8-22 s.n. Orange 2.5 miles NNW of Huntington Beach. 0 Comment
  UCR224153  Stephanomeria exigua subsp. exigua Fred M. Roberts 2008-7-10 7065 Orange South Coast, Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8 km west-northwest of Marine Institute, Dana Point Harbor 65 Comment
  CAS-BOT-BC375865  Stephanomeria virgata Ira L. Wiggins 1965-11-6 20340 Orange Kraemer Oil Estates, near Well No. 14, near end of county road leading to Rancho Santa Ana (extension of Orangethorpe Blvd.) Comment
  RSA699169  Stephanomeria virgata J. Vlahos 1933-10-5 s.n. Orange French Hill. 5 mi. east of airport. 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
  SD251164  Stipa coronata R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49617 Orange Santa Ana Mountains: about 1 mile above San Juan Fire Station. Dry, rocky bluffs above San Juan Creek Comment
  UCR26979  Styrax officinalis var. redivivus E. W. Lathrop 1966-4-18 s.n. Orange Santa Ana Mtns., 4 mi NE of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District Comment
  RSA763837  Styrax redivivus Doris Bowers 1971-4-19 1695 Orange Santa Ana Mts. 762 Comment
  SBBG128111  Styrax redivivus R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49598 Orange tributary to San Juan Cyn, along Ortega Hwy (74) ca. 2 mi above San Juan Fire Station; Santa Ana Mtns Comment
  POM202055  Suaeda calceoliformis L. M. Booth 1932-8-5 1353 Orange West Newport Beach. Comment
  RSA438605  Suaeda calceoliformis J. Ewan 1931-7-31 4763 Oran