Search Results — 2000 specimen records retrieved (1573 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  POM739  Abronia maritima D. L. Crawford 1916-7-28 s.n. Orange Abalone Point 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
  SD41424  Abronia maritima Edith A. Purer 1932-8-31 4880 Orange Sand dunes along Route 101. Comment
  RSA69967  Abronia villosa var. aurita F. W. Peirson 1924-8-29 5060 Orange Santa Ana Comment
  RSA700927  Abronia villosa var. aurita Keith E. Hoffmaster 1933-4-5 s.n. Orange Near Newport Comment
Read comments
Aug 27 2011
  RSA0023451  Acacia Scott D. White 1998-4-9 6267 Orange University of Calif. Irvine Campus; Drainage channel west of Medical Center, west of main campus circle. 15 Comment
  SEINET5642645  Acacia longifolia Shelby J. Wood 2013-3-6 4 Orange Laguna Hills.; 0 Comment
  RSA651416  Acacia longifolia Doug Bell 1949-2-12 s.n. Orange Garden Grove. 182 Comment
  RSA639692  Acacia redolens Scott D. White, P. De Vries 1998-12-10 s.n Orange Brea; Oil field south of Tonner Canyon and north of Lambert rd. Comment
  CAS-BOT-BC333254  Acer macrophyllum Le Roy Abrams 1901-6-15 1819 Orange South Fork Santiago Creek 914 Comment
  IRVC6  Acer macrophyllum Gail Howard 1965-4-28 s.n. Orange Nerport Beach, Back Bay. Southern Coastal 8 Comment
  IRVC8  Acer macrophyllum T. Price 1965-4-17 s.n. Orange Santa Ana Mtns: Silverao Cyn. Peninsular Ranges Comment
Read comments
Nov 15 2013
  RSA456  Acer macrophyllum J. T. Howell 1927-7-26 478 Orange Claymine Ca - on near Sierra Peak. 244 Comment
  UC218134  Acer macrophyllum P. A. Munz, R. D. Harwood 1920-4-25 6730 Orange Silverado Canyon Santa Ana Mts., Silverado Canyon (along stream) 548 Comment
  UC718396  Acer macrophyllum P. C. Everett 1935-6-19 7239 Orange 2 6/10 mi below (w) Summit Truck Trail; Santa Ana Mts., Trabuco Canyon 914 Comment
  RSA689446  Achillea millefolium Scott D. White, Amanda Duchardt 2003-4-10 9008 Orange Santa Ana Mountain Foothills: Ridges & east-facing canyons above Trampas Canyon. 122 Comment
  RSA696051  Achillea millefolium M. Funakoshi 1943-10-23 s.n. Orange Santa Ana. Comment
  RSA696762  Achillea millefolium C. H. Mueller 1932-5-30 s.n. Orange Corner Cleveland and Chapman Comment
  RSA758893  Achnatherum coronatum A. C. Sanders, Fred M. Roberts 2008-4-22 35006 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
  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
  UCSB48114  Acmispon americanus Roberts, Jr., Fred 1981-4-12 Orange Santa Ana Mountains; San Juan Canyon, Hwy. 74, 1.3 km. by road E San Juan Guard Station; 0.9 km. SE Juan Rancho Survey Mark 295 Comment
  RSA0127414  Acmispon glaber var. glaber Fred M. Roberts 2016-3-17 8009 Orange San Joaquin Hills: City of Irvine, Bommer Canyon, east fork, 0.3 km ESE Cattle Camp near East Fork Trail. 152 Comment
  UCR281525  Acourtia microcephala Mitch Provance 2017-6-9 617- 101 Orange Coyote Hills, North Fullerton, East side of Gilbert St., 0.5 miles ENE of intersection with Castlewood Dr. 124 Comment
  UCD128506  Acroptilon repens Ethelbert Johnson 1922-8-8 s.n. Orange Greenville. Comment
Read comments
Apr 10 2016
  RSA792253  Adenostoma fasciculatum R. H. McArthur 1934-4-7 4 Orange Ladd Canyon. Comment
  SD247725  Adenostoma fasciculatum R. F. Thorne, C. W. Tilforth, E. W. Lathrop. 1977-4-27 49680 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 456 Comment
  UCSB48001  Adenostoma fasciculatum var. fasciculatum Roberts, Fred 1980-6-29 Orange Santa Ana Mtns., Viejo Canyon, 0.4km N Calif. Rte 74; 2.2km ENE San Juan Guard Station 341 Comment
  IRVC3114  Adiantum jordanii Diane Ibbetson 1965-3-12 HS 0577 Orange Corona Del Mar Southern Coastal Comment
  RSA0008824  Adiantum jordanii J. T. Howell 1927-6-24 197 Orange Aliso Canyon, Rancho Santa Ana. 274 Comment
  RSA716089  Aeonium Fred M. Roberts 2006-7-27 6396 Orange San Joaquin Hills: Laguna Beach, Temple Hill, 731 Nyes Place, 1.0km NNE Golf Island. 174 Comment
Read comments
Dec 21 2019
  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
  RSA695488  Ageratum houstonianum M. Funakoshi 1941-10-23 s.n. Orange Santa Ana. Comment
  CAS-BOT-BC13322  Agoseris retrorsa L. R. Abrams 1901-6-1 1845 Orange Mount Santiago, near summit Comment
  RSA416424  Agoseris retrorsa Christopher Davidson 1977-5-18 5611 Orange Cleveland National Forest; Santiago Peak (on Orange-Riverside Co. line) 1706 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
  UCR193382  Agrostis pallens A. C. Sanders, Mitch Provance 2008-5-20 35389 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
  UC537288  Agrostis viridis Lawrence M. Booth 1932-6-7 1163 Orange Newport Lagoon Comment
  IRVC26680  Allium Mark A. Elvin 2004-4-4 3214 Orange UCI Arboretum Southern Coastal 15 Comment
  UCSB52871  Allium haematochiton Roberts, Fred; Marsh, G. 1983-3-30 Orange UC Irvine Ecological Preserve, 0.8 km. SSW UCI campus center 60 Comment
  UCR150911  Allium monticola Valerie Soza, LeRoy Gross 1999-6-10 509 Orange Santa Ana Mountains, Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road 1524 Comment
  UCR192119  Allium praecox A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35305 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  RSA70218  Allium praecox F. W. Peirson 1923-3-18 4095 Orange Santa Ana River Canyon 122 Comment
  RSA7475  Allophyllum glutinosum C. B. Wolf 1933-8-24 5399 Orange Summit of Santiago Peak, Santa Ana Mountains 1731 Comment
  CAS-BOT-BC170690  Alnus rhombifolia C. B. Wolf 1931-3-6 1855 Orange Trabuco Camp grounds, Trabuco Canyon, W slope of the Santa Ana Mts. 609 Comment
  RSA581438  Alnus rhombifolia Fred M. Roberts, Gordon Marsh 1932-2-7 4357 Orange Santiago Canyon, Flemming Regional Park, just E of Modjeska at end of paved road, c.a. 3.0 km WSWLaurel Springs. 436 Comment
  UCR152756  Alopecurus saccatus D. E. Bramlet 2003-6-8 3462 Orange South Coast, Fairview Park in Costa Mesa, 152 m west of Canyon School and 396 m NW of intersection of Wilson & Canyon Dr. 24 Comment
  RSA798189  Amaranthus albus R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49593 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  IRVC17987  Amaranthus blitoides A. B. McGee 1980-9-9 Orange San Diego Creek Channel, adjacent to San Joaquin Freshwater Marsh. Irvine Comment
  RSA724062  Amaranthus blitum subsp. emarginatus R. E. Riefner 2004-8-8 4 -370 Orange City of Anaheim, Santa River bottom near 57-Freeway between Orangewood St. and Chapman Ave. 41 Comment
  RSA725586  Amaranthus deflexus Fred M. Roberts 2007-8-6 6699 Orange San Joaquin Hills: Laguna Beach, Laguna Cyn. on east side of Laguna Cyn. Rd. adj. to dog park, 1.2 km S (air) from El Toro Road and 1.8 km WSW Moulton Survey Mk. 52 Comment
  UCR132517  Amaranthus deflexus A. C. Sanders 1999-10-31 23225 Orange South Coast, Mission San Juan Capistrano, near intersection of Ortega Highway (Hwy 74) and El Camino Real 61 Comment
  RSA542441  Amaranthus deflexus Fred M. Roberts 1988-10-21 4161 Orange Irvine: Michelson bridge at San Diego Creek. 4 Comment
  CLARK-A1528-1399  Amaranthus hybridus Alfred R. Roos 1937-12-2 Orange Santa Ana Comment
  RSA184187  Amaranthus hybridus I. L. Wiggins 1965-11-7 20357 Orange Vacant lot between State College Blvd. and Troy High School Campus, Fullerton. Comment
  UC537271  Amaranthus powellii Lawrence M. Booth 1932-7-21 1295 Orange Anaheim Marsh Comment
  RSA614339  Amblyopappus pusillus B. Pitzer 1996-4-30 2795 Orange Crystal Cove State Park, S of City of Irvine on State Hwy 1 (Pacific Coast Hwy). Bluffs above the beach. Comment
  UC536894  Amblyopappus pusillus Lawrence M. Booth 1932-5-12 1007 Orange Newport Bay Comment
  UCR99550  Amblyopappus pusillus B. G. Pitzer, P. Gomez 1996-4-30 2795 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  POM202121  Amblyopappus pusillus Philip A. Munz 1934-3-26 13135 Orange Newport Beach. 15 Comment
  RSA4775  Ambrosia acanthicarpa James Snow 1932-1 s.n. Orange Bryant Ranch, near Long Beach. North West 1/4 Section 1, Township 5 S, Range 12 W, Station #1. Plant #3. Comment
  SD234274  Ambrosia acanthicarpa T. B. Salvato, K. Kurtz 2006-10-15 1916 Orange South Coast: Irvine, San Diego Creek flood control channel, near Michelson Drive and Harvard Avenue. 6 Comment
  UCR210314  Ambrosia acanthicarpa A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37199 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  RSA0106317  Ambrosia acanthicarpa Lyman Benson 1946-5-13 12091 Orange Corona del Mar. 15 Comment
  CAS-BOT-BC13770  Ambrosia chamissonis David D. Keck 1933-9-8 2540 Orange Sunset Beach Comment
  UCSB10368  Ambrosia chamissonis McElwain, Isabelle 1953-4-25 Orange U.S. 101, 2 mi. S of Huntington Beach Comment
  RSA416942  Ambrosia chamissonis A. M. Johnson 1931-3-21 3817 Orange Newport. Comment
  IRVC26148  Ambrosia psilostachya S. D. White 1992-9-29 846 Orange Vicinity of City of Brea, immediately N of Carbon Canyon Road and E of Placentia Avenue, ± 1 mi (airline) S/SE of Tonner Canyon. southern coastal 183 Comment
  RSA0042768  Ambrosia psilostachya Fred M. Roberts 2012-7-18 7679 Orange San Joaquin Hills: Newport Beach, Buck Gully, Buck Gully Trail, west end, just east of north terminus of Poppy Street and 2.1 km WNW summit of Pelican Hill. 37 Comment
  RSA696744  Ambrosia psilostachya Anonymous 1934-09 s.n. Orange [Unspecified] Comment
  RSA725462  Ambrosia psilostachya Fred M. Roberts 2007-8-6 6555 Orange San Joaquin Hills: Laguna Beach, Laguna Cyn. on east side of Laguna Cyn. Rd. adj. to dog park, 1.2 km S (air) from El Toro Road and 1.8 km WSW Moulton Survey Mk. 52 Comment
  RSA769  Ambrosia psilostachya J. T. Howell 1927-10-29 773 Orange Bryant Ranch near Long Beach. 15 Comment
  SD263545  Ambrosia psilostachya Jim Riley 2013-10-15 119 Orange San Clemente area; 0.56 miles ESE intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 68 Comment
  RSA5939  Ambrosia psilostachya C. B. Wolf 1932-7-7 3841 Orange Bryant Ranch ; On Bixby Ave. 2/10 mi. W of Hansen Road. 9 Comment
  RSA753029  Ammannia coccinea A. C. Sanders, Fred M. Roberts 2008-9-18 36095 Orange Lomas de Santiago, Santiago Creek Canyon c. 0.5-0.8 miles above the highway bridge 300 Comment
  CDA7829  Ammi majus Rivas, Janet 2008-3-13 PDR# 1369690 -2 Orange Santa Ana, 1427 Village Way 0 Comment
  SEINET12120344  Ammi visnaga L. M. Booth 1932-1 1268 Orange Sant Ana River Flats, near the sea Comment
  RSA415297  Amorpha californica C. B. Wolf, E. R. Johnson 1933-11-3 5525 Orange Main Divide Motorway Bedford Peak Firebreak and Silverado Motorway. Comment
  CAS-BOT-BC180618  Amorpha californica var. californica P. C. Everett 1935-6-19 7235 Orange 1/2 mi. below (W.) head of canyon, Trabuco Canyon, Santa Ana Mts. 1066 Comment
  CAS-BOT-BC180619  Amorpha californica var. californica P. C. Everett 1935-6-19 7235 Orange 1/2 mi. below (W.) head of canyon, Trabuco Canyon, Santa Ana Mts. 1066 Comment
  RSA603352  Amorpha fruticosa Scott D. White, Brian Leatherman 1997-6-12 5329 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
  JEPS61147  Amsinckia intermedia Alice King 1908-1 Orange Anaheim plain Anaheim Comment
  UC1292600  Amsinckia intermedia C. L. Hitchcock, C. V. Muhlick 1964-3-17 23064 Orange 8 mi e Yorba Linda; Santa Ana Canyon Comment
  RSA184105  Amsinckia intermedia I. L. Wiggins 1966-3-5 20501 Orange Among grasses and weeds on grazed hillside, along hwy S-18, about 4.5 mi. E of Laguna Beach Comment
  RSA722350  Amsinckia intermedia E. Culver s.n. Orange Orange orchard. Comment
  SEINET12280463  Amsinckia intermedia Unknown 1933-1 8203 Orange back of Laguna Beach Comment
  UCD119277  Amsinckia intermedia Francia Chisaki 1957-4-3 927 Orange 6 miles S of Irvine, just S of El Toro near top of hill on Highway 101. Comment
  UCD119278  Amsinckia intermedia Francia Chisaki 1957-4-3 928 Orange 6 miles S of Irvine, just S of El Toro near top of hill on Highway 101. Comment
  RSA789229  Anagallis arvensis Naomi Fraga, Duncan S. Bell 2009-5-11 2712 Orange San Juan loop trail, Cleveland National Forest just west of Sugarloaf Spur Trail. 912 Comment
  UCR140807  Anagallis arvensis Robin G. Marushia 2004-5-4 012 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
  UCR191435  Anagallis arvensis A. C. Sanders, Fred M. Roberts 2008-4-8 34729 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  RSA699139  Anagallis arvensis Effie Jessup s.n. Orange Waste ground Comment
  POM1029  Andropogon glomeratus C. B. Bradshaw s.n. Orange San Joaquin Ranch near Laguna. Comment
  UCSB56513  Andropogon glomeratus Marsh, G.; Marsh, K. 1977-11-21 Orange Santa Ana Mtns; San Juan Hot Springs 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
  UCR192112  Antirrhinum nuttallianum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35315 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  JEPS4288  Antirrhinum nuttallianum subsp. nuttallianum Lawrence M. Booth 1932-7-7 1260 Orange s of Huntington Beach Comment
  POM201705  Antirrhinum nuttallianum subsp. nuttallianum L. M. Booth 1932-12-6 1260 Orange Road side near Newport Beach Comment
  RSA0057935  Apiastrum angustifolium Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49666 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. Comment
  UCR138386  Apium graveolens Scott D. White, Brian Leatherman 1997-6-12 5314 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
  POM3325  Apium graveolens P. A. Munz 1918-5-4 2169 Orange Laguna Beach Comment
  RSA519  Apium graveolens J. T. Howell 1927-7-15 405 Orange Santa Ana River, Rancho Santa Ana [Botanic Garden] 152 Comment
  UCR241665  Apocynum cannabinum Dick Newell, Judy Booth 2013-5-28 331 Orange Peninsular Range; Santa Ana Mtns., Agua Chinon Wash, 1.12 mi. due west of Bolero Point, Limestone Canyon Rd. 269 Comment
  RSA38679  Aquilegia formosa P. A. Munz 1946-10-26 11619 Orange Botanic Garden. Comment
  OBI32690  Araujia sericifera O. F. Clarke 1968-8-24 s.n. Orange 2 mi E of Yorba Linda turnoff on Santa ana Cyn rd Comment
  LA42396  Arctostaphylos glandulosa W. Pequegnat; 1938-4-16 sn Orange Santa Ana Mountains, Indian Truck Trail 914 Comment
Read comments
Aug 29 2015
  RSA629334  Arctostaphylos glandulosa Jon E. Keeley 1992-6-12 15519 Orange North of El Cariso on road to Los Pinos Pk, 3.8 km north of Hwy 74. 1000 Comment
  RSA629342  Arctostaphylos glandulosa Jon E. Keeley 1992-6-12 15522 Orange North of El Cariso on road to Los Pinos Pk, 3.8 km north of Hwy 74. 1000 Comment
  UCR282324  Arctostaphylos glandulosa A. C. Sanders, Yi Huang 2017-3-3 42703 Orange Peninsular Range; Santa Ana Mtns., North Main Divide Road, 6.5 km north of Hwy 74, at junction to Blue Jay and Falcon Camps 1038 Comment
  CAS-BOT-BC23108  Arctostaphylos glandulosa subsp. glandulosa L. R. Abrams 1901-6-15 s.n. Orange Mt. Dante a So summit Comment
  CAS-BOT-BC402202  Arctostaphylos glandulosa subsp. glandulosa R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49708 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA629340  Arctostaphylos glandulosa subsp. glandulosa C. J. Fotheringham, Jon E. Keeley 1996-6-24 27640 Orange Ca. 3 km west of Sierra Peak. 700 Comment
  SD247631  Arctostaphylos glandulosa subsp. glandulosa R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49708 Orange Northern Santa Ana Mountains; Sierra Peak. 900 Comment
  POM254954  Arctostaphylos glandulosa subsp. zacaensis W. Pequegnat 1940-4-13 s.n. Orange Modjeska Springs, Santa Ana Mts. 1311 Comment
  UC1137480  Arctostaphylos glandulosa subsp. zacaensis J. B. Spring 1931-3-18 26 Orange Black Star Canyon Corona Quadrangle (Plot #17, Corona #2) Comment
  UC718382 Image available Arctostaphylos pringlei subsp. drupacea P. C. Everett 1935-6-19 7232 Orange Main Divide Motorway 7 mi from summit of Santiago Peak (se); Santa Ana Mts. 1280 Comment
  CAS-BOT-BC334498  Arctotheca prostrata R. E. Riefner, Jr. 2013-7-6 13 -125 Orange City of Irvine, Irvine Valley College, Irvine Center Dr. near College St. 37 Comment
  CAS-BOT-BC27476  Argemone munita subsp. robusta Carl Brandt Wolf 1933-8-24 5403 Orange Santa Ana Mts. Summit of Santiago Pk. 1731 Comment
  UCR27108  Argemone munita subsp. robusta T. P. Krantz 1981-6-18 s.n. Orange Santa Ana Mtns, Main Divide Truck Trail near the head of the canyon Comment
  UCR132566  Aristea capitata Robert DeRuff 1985-5-6 116 Orange Southern Coast, Newport Back Bay, near the old salt works 3 Comment
  RSA682760  Aristida purpurea Scott D. White, Amanda Duchardt 2003-3-27 8857 Orange Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  RSA588773  Aristida purpurea var. parishii Fred M. Roberts, Carol A. Roberts, D. Bontrager 1990-4-28 4590 Orange Rancho Mission Viejo: Christianitos Canyon, 4.0 kilometers E Playa Survey Marker; UTM Z11 37 06 600m N, 4 47 600m E. 174 Comment
  RSA660594  Aristida purpurea var. parishii R. E. Riefner 2000-7-8 20 -629 Orange NCCP North Ranch Policy Plan Area. On ridgeline overlooking upper W fork of Fremont Canyon; located E of Main Divide Road and SE from Windy Ridge cypress forest. 438 Comment
  RSA759263  Arnica discoidea Robt Allen, Christopher M. Barnhill 2008-5-26 s.n. Orange upper Silverado Canyon, along Maple Springs Truck Trail, 5.7 road miles up from Maple Springs forest gate, 0.8 road miles down from junction with Main Divide Truck Trail. SW end of short road spur. 1313 Comment
  IRVC486  Artemisia californica A. Adams 1965-5-2 Orange Newport Beach, Corona del Mar, Little Corona Beach. Southern Coastal Comment
  SEINET227962  Artemisia californica Leila M. Shultz 1980-5-2 4040 Orange Orange County: foothills south of Diamond Bar, Chaparral. 213 Comment
  RSA0062670  Artemisia californica Norman Willis 1948-2-8 s.n. Orange In foothills about 8 miles east of Orange. 304 Comment
  POM201845  Artemisia douglasiana L. M. Booth 1932-7-23 1302 Orange Corona del Mar, Newport Beach 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
  UCR231349  Artemisia douglasiana A. C. Sanders, Kent Beaman 2011-9-27 39900 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail above Silverado, at major (dry) stream crossing, 3.95 km NNW (347 deg. ) of Santiago Peak 903 Comment
  POM201750  Artemisia dracunculus L. M. Booth 1932-7-4 1242 Orange Newport Lagoon. Comment
  UCR274150  Artemisia dracunculus Dick Newell, Don Millar 2016-5-24 427 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Merkel Spur Trail at Limestone Ridge Road, 0.13 mile south of Cactus Canyon Road 417 Comment
  RSA773  Artemisia dracunculus J. T. Howell 1927-9-24 745 Orange Santa Ana Botany Garden 152 Comment
  RSA784180  Artemisia vulgaris J. D. Olmsted 1959-8-26 836 Orange Drainage area to Santiago Reservoir. Mouth of Black Star Canyon east of Santiago Reservoir. 320 Comment
  UCR240073  Arthrocnemum subterminale Dick Newell 2012-9-29 302 Orange South Coast, Newport Beach, Back Bay Drive at Big Canyon parking area 2 Comment
  CDA31508  Arundo donax D. G. Kelch 2006-12-9 06 .559-B Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  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
  RSA0104746  Asclepias eriocarpa A. C. Sanders, Fred M. Roberts 2008-6-17 35489 Orange Lomas de Santiago, West Loma Ridge Spur Road c. 1 km east of Sheriff s Training Facility and 1.6 km SW of Irvine Lake, between hwys 241 and 261. 357 Comment
  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
  UCR197701  Asclepias fascicularis A. C. Sanders, Fred M. Roberts 2008-9-18 36086 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 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
  UCR141345  Asparagus asparagoides Robert DeRuff 1994-2-24 436 Orange Southern Coast, Newport Beach, Newport Back Bay, below Eastbluff North 9 Comment
  IRVC19485  Aspidotis californica Karlin G. Marsh, G. A. Marsh 1982-10-23 Orange Canyon Acres Canyon; shaded, rocky slopes at base of cliffs north of creek. Laguna Beach Comment
  POM9822  Aspidotis californica P. A. Munz, R. D. Harwood 1920-4-24 3743 Orange Santa Ana Mountains, Sierra [Freemont] Canyon 366 Comment
  IRVC178  Asplenium bulbiferum Ray Nesheim 1965-5-11 HS0565 Orange Balboa Island. Southern Coastal Comment
  POM201791  Aster hesperius L. M. Booth s.n. Orange Newport Beach Comment
  RSA93824  Aster hesperius F. W. Peirson 1924-10-19 5241 Orange Wintersberg Comment
  RSA782  Aster subulatus var. ligulatus J. T. Howell 1927-10-29 775 Orange Bryant Ranch near Long Beach. 15 Comment
  RSA5862  Aster subulatus var. ligulatus C. B. Wolf 1932-9-16 4114 Orange San Gabriel River, bordering Los Alamitos Bay 2 Comment
  RSA93743  Aster subulatus var. ligulatus F. W. Peirson 1924-10-19 5240 Orange Wintersberg Comment
  NY621861  Astragalus brauntonii C. B. Wolf 1936-6-22 8000 Orange This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA0014609  Astragalus brauntonii Justin M. Wood 2010-5-12 1686 Orange Santa Ana Canyon: Santa Ana River floodplain, 0.25 miles north of Coal Canyon wildlife corridor, west of Green River Golf Course of bluff south of the river. 122 Comment
  IRVC25473  Astragalus pomonensis Fred M. Roberts 1987-4-21 3375 Orange Aliso Creek, Aliso Creek Bike Trail, 3.0km ENE Moulton Peak, Aliso Viejo 73 Comment
  HSC14575  Astragalus trichopodus var. lonchus S. M. Clapp 1966-4-9 38 Orange Just S of Brea Canyon Rd. and 1 mi. N of Brea. Union Oil Proper. 61 Comment
  POM17799  Astragalus trichopodus var. lonchus P. A. Munz 1923-9-7 7770 Orange Mouth of Trabuco Canyon 305 Comment
  UCR234155  Astragalus trichopodus var. lonchus Dick Newell, Don Millar 2012-2-28 229 Orange Peninsular Range; Santa Ana Mtns. Region, Lomas de Santiago, along Hangmans Tree Rd. at Santiago Creek 357 Comment
  RSA263655  Astragalus trichopodus var. trichopodus E. W. Lathrop 1977-4-13 7604 Orange Coal Canyon at base of Sierra Peak in the Santa Ana Canyon. Comment
  RSA725806  Atriplex T. B. Salvato, Mitch Provance, Katie Kurtz 2006-10-15 1906 Orange South Coast: Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Drive. 6 Comment
  UC1980258  Atriplex R. E. Riefner Jr. 2008-3-24 08 -67 Orange City of Seal Beach, Bolsa Chica Salt Marsh, Warner Ave. at Pacific Coast Highway. 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
  RSA0070791  Atriplex CNPS Accuracy Assessment Team 2014-7-8 9304 Orange Upper Newport Bay Nature Reserve. Comment
  CAS-BOT-BC248871  Atriplex amnicola R. E. Riefner, Jr. 2006-2-12 06 -21 Orange South Coast: N end of City of San Clemente, along N-bound I-5, immediately S of Camino de Estrella exit ramp 66 Comment
  RSA671246  Atriplex amnicola R. E. Riefner 1999-5-22 99 -290 Orange City of Dana Point, beach west of Pacific Coast Hwy. South of Salt Creek near Ritz Carlton Hotel. 15 Comment
  SBBG122000  Atriplex amnicola R. E. Riefner 2006-8-6 06 -381 Orange Big Cyn Crk drainage near Back Bay Drive, Newport Bay 8 Comment
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Dec 13 2012
  RSA747714  Atriplex californica Fred M. Roberts 2008-7-10 7073 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
  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
  UCR252230  Atriplex coulteri Marissa Manahan 2011-5-7 s.n. Orange Newport Beach, Corona Del Mar State Beach; south of Avocado Ave. off Ocean Blvd. 25 Comment
  IRVC23986  Atriplex davidsonii R. De Ruff 1988-5-20 Orange Newport Backbay, north end on western shore, Newport Beach 0 Comment
  CAS-BOT-BC170606  Atriplex glauca A. C. Sanders 2008-4-29 35139 Orange Lomas de Santiago, western end of Loma Ridge on road to sheriff's trianing facility, c. 1.5 mi. SW of Santiago Reservoir, Black Star Canyon 7.5' - Peninsular Range, Santa Ana Mtns. 335 Comment
  RSA752214  Atriplex glauca R. E. Riefner Jr. 2002-5-4 02 -87 Orange City of Dana Point, beach W of Pacific Coast Hwy. near mouth of Salt Creek. 15 Comment
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Feb 28 2016
  SBBG132292  Atriplex glauca R. E. Riefner Jr. 2006-3-19 06 -52 Orange near Avocado Ave and San Nicolas Dr, W of MacArthur Blvd; Newport Beach 77 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
  RSA743658  Atriplex glauca R. E. Riefner Jr. 2007-8-22 7 -370 Orange Ladera Ranch/San Juan Capistrano area, Antonio Pkwy. ca. 0.6 miles S of Covenant Hills Rd. 170 Comment
  RSA743661  Atriplex glauca R. E. Riefner 2006-6-20 6 -253 Orange City of Rancho Santa Margarita, W side of SR-241 near Los Alisos Blvd. 292 Comment
  RSA795709  Atriplex glauca W. R. Ferren 1991-12-3 EPA- 17 Orange San Juan Creek Highway 74 at bridge for San Juan Creek, San Juan Capistrano. Comment
  RSA741477  Atriplex halimus R. E. Riefner 2008-12-23 8 -375 Orange City of Laguna Beach, S Crescent Bay, Cliff Dr. at Circle Way. 5 Comment
  RSA478324  Atriplex leucophylla N. C. Cooper 1942-11-9 884 Orange Balboa Comment
  RSA678458  Atriplex leucophylla Valerie Soza, Kenneth Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1117 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  JEPS48895  Atriplex pacifica Lawrence M. Booth 1932-5-19 1069 Orange Newport Bay Comment
  UCR128136  Atriplex rhagodioides Roger E. Reinke 2003-2-18 s.n. Orange South Coast, Newport Back Bay, Big Canyon 30 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
  HSC34526  Atriplex semibaccata J. D. Ackerman, A. M. Montalvo 1974-3-28 167 Orange S Laguna, by S Laguna Sanitary Station Comment
  RSA234479  Atriplex semibaccata James Henrickson 1970-7-25 5034 Orange 3.5 miles NW of Huntington Beach on sandy margin of Bolsa Bay, 1/4 mile SE of Warner Ave. along Pacific Coast Hwy. 0 Comment
  RSA5242  Atriplex semibaccata C. B. Wolf 1932-9-13 4030 Orange Bryant Ranch: Triangle of waste ground S of Bryant Ave., & 1/2 mi. west of Los Alamitos Blvd., (Triangle waste ground at NW corner of SW 1/4 sect. 30 T4S R11W) 8 Comment
  RSA74876  Atriplex semibaccata Elroy Robinson 1935-6-26 s.n. Orange Along Santa Fe Railway, El Toro, south of Los Angeles. Comment
  RSA252  Atriplex serenana J. T. Howell 1927-7-22 459 Orange North of Botany Garden, Rancho Santa Ana. 274 Comment
  RSA5955  Atriplex serenana C. B. Wolf 1932-7-7 3846 Orange Bixby Ave., 0.7 mile W of Hansen road (0.2 mile W of SE corner of NE/4 of NW/4). 8 Comment
  JEPS59655  Atriplex serenana var. serenana L. M. Booth 1932-7-4 1255 Orange Newport Bay Comment
  RSA716661  Atriplex suberecta Fred M. Roberts, Amber Oneal 2004-8-18 6094 Orange San Juan Capistrno: Ortega Ranch Business Center site, between Rancho Viejo Rd. and I-5 freeway adjacent to Horno Creek; 0.6km NE Mission San Juan Capistrano. 54 Comment
  RSA65393  Atriplex subspicata F. W. Peirson 1924-8-29 s.n. Orange 2.5 miles from Balboa Beach on road inland along creek Comment
  CDA22915  Atriplex triangularis Mary H. White 2006-9-23 923063 Orange Southern Coastal; San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; southwest edge along San Diego Creek, north of University Drive, east of Highway 73. Comment
  RSA453974  Atriplex watsonii Anstruther Davidson 1902-09 1767 Orange Newport Beach. Comment
  CAS-BOT-BC146058  Avena barbata Ira L. Wiggins 1966-3-22 20554 Orange Floor of Silverado Canyon about 0.5 mile below entrance to Cleveland National Forest. Comment
  CAS-BOT-BC146059  Avena barbata Ira L. Wiggins 1966-3-16 20529 Orange Roadside near entrance to Firestone Boy Scouts Reservation. Comment
  POM202370  Avena barbata L. M. Booth 1932-5-12 1040 Orange Newport Bay. 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
  IRVC7609  Baccharis douglasii Charles W. Sexton 1972-7-17 Orange Bolsa Chica salt marsh southern coastal 0 Comment
  RSA151095  Baccharis douglasii Peter H. Raven 1961-10-15 16861 Orange Coast Hwy 2 miles SE of Sunset Beach 0 Comment
  LA103539  Baccharis emoryi Barry A. Prigge; 1983-12-17 5519 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
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Jun 12 2013
  LA37359  Baccharis emoryi David S. Verity; Fred Lang 1972-7-14 sn Orange hills behind South Laguna, at the top of Pacific Island Drive Comment
  RSA768505  Baccharis emoryi Justin M. Wood 2009-12-1 1389 Orange Santa Ana River: marsh just upstream of Pacific Coast Highway. 0 Comment
  JEPS30717  Baccharis glutinosa Peter H. Raven 1961-10-15 16861 Orange 2 mi se of Sunset Beach (Coast Highway); Coast Highway Comment
  UCR112095  Baccharis glutinosa A. C. Sanders, D. Malueg, K. D. Jones 2000-4-19 23336 Orange Pacific Coast, Bolsa Chica Lagoon, along dirt roads in oil field, east of Hwy 1, east of Bolsa Chica St. 11 Comment
  RSA741699  Baccharis malibuensis R. E. Riefner Jr. 2008-7-17 08 -239 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 574 Comment
  RSA0028029  Baccharis pilularis Fred M. Roberts 2012-9-6 7702 Orange San Joaquin Hills: Buck Gully, Buck Gully Trail, about 1.8 kilometers NW Pelican Hill summit. 64 Comment
  IRVC21770  Baccharis pilularis subsp. consanguinea Fred M. Roberts 1984-11-27 1442 Orange Novia St. bridge over San Juan Creek, 0.6km S Bench Mark 133, San Juan Capistrano 31 Comment
  SD9148  Baccharis pilularis subsp. consanguinea unknown Dec 1878 Orange Santa Ana Valley Comment
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Oct 29 2013
  HSC5106  Baccharis salicifolia T. L. Ackerman 1964-3-28 14 Orange On Irvine Park Dr. inside Irvine Park Comment
  IRVC28769  Baccharis salicifolia Barry S. Nerhus 2006-2-4 1 Orange San Joaquin Marsh; NW Edge of Marsh. Southern Coastal 3 Comment
  POM350370  Baccharis salicifolia E. Crow 1929-2-22 171 Orange Gypsum Canyon, Snata Ana Mts, S of Corona Comment
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Aug 29 2013
  RSA658218  Baccharis salicifolia T. A. Daubert 1991-5-19 649 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  RSA789  Baccharis salicifolia J. T. Howell 1927-10-23 769 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  SEINET5642762  Baccharis salicifolia Shelby J. Wood 2013-3-9 16 Orange Huntington Beach, Central Park.; 0 Comment
  UCR223420  Baccharis salicifolia Dick Newell, Don Millar 2011-3-1 066 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  JEPS21243  Baccharis salicifolia subsp. salicifolia L. M. Booth 1933-10-18 Orange Newport Beach Comment
  SDSU6381  Baccharis salicina D. F. Howe 1945-10-20 1354 Orange Santa Ana river between Orange and Corona. Comment
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Oct 12 2011
  UCR240069  Baccharis salicina Dick Newell, Judy Booth 2012-9-26 289 Orange South Coast, Newport Beach, Back Bay Drive at Big Canyon parking area 3 Comment
  UCR66999  Baccharis salicina A. C. Sanders 1990-10-6 10199 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
  RSA0035665  Bacopa monnieri R. E. Riefner Jr. 2012-7-1 12 -295 Orange city of Mission Viejo, Oso Creek, c. 1.3 mi north of Paseo de Colinas Ave. on Camino Capistrano Ave. 88 Comment
  CAS-BOT-BC334499  Bahiopsis laciniata R. E. Riefner, Jr. 2013-4-5 13 -56 Orange Anaheim Hills, vicinity Hidden Canyon Rd. at Avenue De Santiago 305 Comment
  RSA798094  Barbarea orthoceras R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49590 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  CHSC26476  Batis maritima James Henrickson 1970-7-25 5034 b Orange 3 1/2 miles NW of Huntington Beach on sandy margin of Bolsa Bay, 1/4 mile SE of Warner Ave. along Pacific Coast Hwy. 0 Comment
  RSA678457  Batis maritima Valerie Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary D. Wallace 2001-4-4 1110 Orange Seal Beach National Wildlife Refuge: Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  UCR240098  Batis maritima Dick Newell 2012-9-29 298 Orange South Coast, Newport Beach, Back Bay Drive at Big Canyon parking area 2 Comment
  POM17841  Bebbia juncea Philip A. Munz 1923-9-7 7771 Orange Mouth of Trabuco Canyon 305 Comment
  RSA92401  Bebbia juncea F. W. Peirson 1923-9-8 4043 Orange Trabucco Canyon. 427 Comment
  UC68874  Bebbia juncea var. aspera H. M. Hall 1905-7-1 6729 Orange Santa Ana River 137 Comment
  UCD169738  Berberis aquifolium var. dictyota R. F. Thorne; et al. 1977-4-27 49716 Orange Santa Ana Mountains: Bedford Truck Trail, ca. 0.8 km below junction with Main Divide Truck Trail. 1402 Comment
  SD247611  Berberis dictyota R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49716 Orange Santa Ana Mountains: Bedford Truck Trail, ca. 0.8 km below junction with Main Divide Truck Trail Comment
  IRVC26420  Berberis nevinii Mark A. Elvin 2004-2-22 3150 Orange UCI Arboretum Southern Coastal 15 Comment
  UCR157708  Beta macrocarpa Adrian Wolf 1998-7-1 407 Orange South Coast, Peters Canyon Channel, east of channel near Harvard Ballfield, between Harvard Ave. & creek, south of Warner Ave. to Barranca 15 Comment
  SD143950  Beta vulgaris Scott D. White 1993-3-5 1128 Orange Marine Corps Air Station, southeast of Red Hill Ave. and northeast of Barranca. 14 Comment
  RSA724044  Bidens frondosa R. E. Riefner 2004-9-18 04 -420 Orange City of Yorba Linda; Santa Ana River, Horseshoe Bend, near La Palma Rd. and Via Del Rio Rd. 106 Comment
  RSA696877  Bidens laevis J. Russell Bruff 1930-10 s.n. Orange Santa Ana River Bed. Comment
  RSA800671  Bidens laevis Justin M. Wood 2010-9-29 2750 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
  RSA696878  Bidens pilosa Effie Jessup s.n. Orange Waste ground Comment
  RSA751311  Bloomeria crocea A. C. Sanders, Fred M. Roberts 2008-5-6 35266 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
  RSA0047638  Bloomeria crocea var. crocea R. E. Riefner Jr. 2014-5-13 14 -120 Orange 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
  RSA33597  Bloomeria crocea var. crocea N. C. Cooper 1944-6-4 1343 Orange San Juan Canyon, lower camp ground. 457 Comment
  RSA699326  Bloomeria crocea var. crocea Fred M. Roberts 2003-5-1 5678 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, Cristianitos Cyn., 0.5km SSW Gato Gate and 0.1km west of Cristianitos Rd. 99 Comment
  SD247271  Bloomeria crocea var. crocea R. E. Riefner Jr. 2014-5-13 14 120 Orange City of San Clemente, Rancho San Clemente Trail, E ca. 0.15 mi from Ave Salvador and S cal. 0.1 mi off Utility Access Road. 238 Comment
  RSA362294  Boisduvalia densiflora Fred M. Roberts 1985-6-7 1861 Orange Santa Ana Mountains: Main Divide Truck trail, 2.2km ESE Los Pinos Peak. 1005 Comment
  JEPS63987  Bolboschoenus maritimus L. M. Booth 1932-5-30 1133 Orange Newport Bay Comment
  CAS-BOT-BC31016  Bolboschoenus maritimus Helen D. Geis 1902-11-1 s.n. Orange Santa Ana Peat Lands. Comment
  UCSB52906  Bolboschoenus maritimus Roberts, Fred 1984-8-6 Orange Irvine: UC Irvine, along Abode Circle Road; 0.9 km. ENE campus center; 2.3 km. W French Hill 30 Comment
  UCD140035  Bolboschoenus maritimus subsp. paludosus B. Pitzer; T. Tennant 1997-11-8 3365 Orange Crystal Cove State Park, along Moro Canyon Trail, from beginning to a point ca. 1.75 miles up the canyon. 85 Comment
  UCR100445  Bolboschoenus maritimus subsp. paludosus B. G. Pitzer 1996-4-30 2772 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  RSA0059072  Bolboschoenus robustus CNPS Accuracy Assessment Team 2014-7-7 9342 .1 Orange San Joaquin Freshwater Marsh Reserve. Comment
  UCSB34951  Bolboschoenus robustus Ferren, Wayne; Whitmore, S. 1980-8-27 Orange In salt marsh of Newport Backbay; just W of Backbay Drive; ca. 3 km. NE of Rt. 1, Newport Beach Comment
  CAS-BOT-BC95400  Bowlesia incana Scott D. White; Noel Davis 1998-4-24 6339 Orange Mission Viejo Area: Aliso Creek watershed, E of El Toro Rd., N of jct. with Valley Vista Way 500 Comment
  UCR222385  Bowlesia incana Mark A. Elvin 2003-1-26 2246 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  UCSB48370  Bowlesia incana Roberts, Fred 1982-4-18 Orange Santa Ana Mountains: San Juan Canyon, Hwy 74, 0.6km SW Lower San Juan Picnic Ground; 1.9km WNW Sitton Peak 420 Comment
  UCSB52932  Brachypodium distachyon Roberts, Fred; Marsh, K. 1983-5-13 Orange Dana Point Headlands; S of Pacific Coast Hwy, 0.5 km NW Dana Point Harbor; 0.4 km SSW Richard Henry Dana School 80 Comment
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Jan 27 2021
  RSA0067892  Brassica campestris R. W. Hufstader 1971-2-13 11 Orange Collected in Villa Park on Loma St. by the road. 243 Comment
  IRVC28773  Brassica geniculata Duy D. Nguyen 2006-2-4 1 Orange San Joaquin Marsh; NW Edge of Marsh. Southern Coastal 5 Comment
  RSA0066349  Brassica nigra A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34626 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir. 280 Comment
  UCSB48205  Brassica nigra Roberts, Fred 1981-5-2 Orange Mission Viejo: Camino Capistrano; 1.7 km. N Crown Valley Parkway 49 Comment
  UCR237842  Brassica rapa Mark A. Elvin 2003-2-2 2271 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  RSA0043351  Brassica rapa subsp. sylvestris David Barrios 1991-5-8 36 Orange 1500 ft. northwest of Fairmont Ave and Quail Cir., Yorba Linda. 365 Comment
  IRVC1017  Brassica rapa subsp. sylvestris J. Morgan 1965-2-21 Orange Corona del Mar, Bayside Dr. and Coast Hwy acrosss from Beacon Bay. Newport Beach Comment
  RSA581665  Brodiaea jolonensis Tony Bomkamp 1995-06 s.n. Orange Rancho Mission Viejo, ridge west side of Canada Gobernadora, west of Casper Regional Park. 140 Comment
  RSA588769  Brodiaea jolonensis Fred M. Roberts 1990-5-7 4595 Orange Rancho Mission Viejo: Ridge south of Blind Canyon, TRW Lease Holding, 4.9 km NE Clemente Survey Marker. 152 Comment
  POM50858  Bromus carinatus Le Roy Abrams 1901-06 1844 Orange Mt. Santiago. Comment
  SD241666  Bromus carinatus A. C. Sanders, Fred M. Roberts 2008-4-8 34751 Orange Peninsular Range; Santa Ana Mountains: Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Road, above Dripping Springs Loop Road (El Toro 7.5'Q) 456 Comment
  SEINET14397348  Bromus carinatus D. L. Croninger 1964-12-15 18 Orange Fullerton Jr. College on Chapman Ave., Fullerton. Comment
  UCD58368  Bromus catharticus John Thomas Howell 1956-3-11 30922 Orange Yorba Linda. Comment
  CAS-BOT-BC156006  Bromus diandrus P. Munz; L. Street; G. Williams 1919-5-3 2644 Orange Santa Ana River Canyon. Comment
  POM7087  Bromus diandrus P. A. Munz, L. T. Street, G. Williams 1919-5-3 2644 Orange Santa Ana River Canyon. Comment
  RSA0013959  Bromus diandrus Fred M. Roberts 2008-5-7 6939 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
  RSA0058186  Bromus diandrus Fred M. Roberts 2014-4-21 7870 Orange South Coast: San Joaquin Hills: Upper Laguna Lake 1 (upper Laguna Lake), north basin. 113 Comment
  RSA699982  Bromus grandis Rankin s.n. Orange Santa Ana. Comment
  UCSB48070  Bromus hordeaceus Fritzke, S.; Roberts, Fred 1982-4-3 Orange Dana Point; hills, 1.0 km. N of Dana Hills High School; 1.9 km. W of Marco Forster Junior High School 100 Comment
  POM1256  Bromus hordeaceus H. M. Hall 1902-05 3287 Orange Santa Ana River 183 Comment
  RSA650632  Bromus hordeaceus Daniel Truong 1991-5-5 13 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of ''closed area''. Comment
  RSA735970  Bromus madritensis subsp. madritensis Scott D. White, Justin M. Wood 2008-4-21 11903 Orange Chino Hills State Park, N of 91 freeway, above Yorba Linda. 366 Comment
  RSA0127416  Bromus madritensis subsp. rubens Fred M. Roberts 2016-3-17 8011 Orange San Joaquin Hills: City of Irvine, Bommer Canyon, east fork, 0.3 km ESE Cattle Camp near East Fork Trail. 152 Comment
  UCR191338  Bromus rubens A. C. Sanders, Fred M. Roberts 2008-4-8 34783 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
  RSA697680  Bromus rubens Elisabeth Norland 1929-4-11 s.n. Orange Cypress. Comment
  IRVC26750  Bulbine Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3176 Orange UCI Arboretum Southern Coastal 15 Comment
  JEPS53272  Cakile edentula Alice King June, 1908 Orange Newport Comment
  RSA678743  Cakile maritima Valerie Soza, Kenneth Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1113 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  CSUSB524  Cakile maritima R. P. Sunderman 1968-5-11 S. N. Orange Beach just south of Corona del Mar Comment
  CSUSB525  Cakile maritima C. M. Flanagan 1971-5-18 S. N. Orange Cresent Bay, Laguna Beach Comment
  CAS-BOT-BC438319  Calandrinia ciliata C. L. Hitchcock 1966-3-15 24136 Orange 1/2 mile e. of Brea Comment
  RSA743380  Calandrinia ciliata Fred M. Roberts 2008-4-9 6860 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 52 Comment
  UCR223960  Calandrinia ciliata Fred M. Roberts 2008-4-9 6860 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve, near Outlook 2, 0.7 km west of Marine Institute, Dana Point Harbor 52 Comment
  RSA723963  Callistemon viminalis R. E. Riefner Jr. 2006-11-12 06 -669 Orange City of Newport Beach, urban creek draining into San Diego Creek at confluence with Newport Bay; San Diego Creek at SR-73 overpass. 6 Comment
  RSA724030  Callistemon viminalis R. E. Riefner Jr. 2006-11-14 6 -674 Orange City of Irvine, San Diego Creek; vicinity of Campus Ave. at University Dr. 5 Comment
  RSA443846  Calochortus catalinae Gordon Marsh, K. G. Marsh 1978-3-30 s.n. Orange Santa Ana Mountains: Ortega Highway, E of Highway Marker #67 before San Juan Creek Bridge. Comment
  RSA582819  Calochortus catalinae Mark Elvin, Adrian Wolf 1995-6-15 56 Orange Crystal Cove State Park, back country: Moro Canyon. 61 Comment
  RSA582916  Calochortus catalinae Mark Elvin, Helen Kamp 1995-5-5 11 Orange Santa Ana Mountains: Caspers Regional Park; base of ridge N of Bell Creek. 207 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
  RSA749519  Calochortus catalinae Fred M. Roberts 2009-4-11 6886 Orange Lomas de Santiago: Loma Ridge, upper Dripping Springs Cyn., 0.9 km NE Bee Peak and 1.2 km WNW Dripping Springs. 448 Comment
  RSA708370  Calochortus invenustus Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6241 Orange Modjeska Peak summit, c.a. 60m south of highest point. 1675 Comment
  RSA734800  Calochortus splendens A. C. Sanders, Fred M. Roberts 2008-5-6 35247 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
  UCR150612  Calochortus splendens Scott D. White 1997-5-6 5046 Orange Peninsular Ranges; Santa Ana Mountains, Lomas de Santiago. Santiago Canyon area: Ridgetop road N and west of Bolero Lookout 488 Comment
  CAS-BOT-BC492700  Calochortus splendens Gale Sphon 1959-5-2 325 Orange Between Upper and Lower San Juan Camps, Cleveland National Forest Comment
  RSA0050043  Calochortus splendens Wendy Boes 2010-9-8 2009 -011 Orange Peninsular Ranges; Santa Ana Mountains; El Cariso 953 Comment
  SEINET7067518  Calochortus weedii A. G. Vestal 1947-6-12 s.n. Orange Upper San Juan Canyon on Route 74 to Lake Elsinore in Cleveland National Forest. Coordinate datum: NAD27. UTM Zone 11, 452352mE, 3716538mN. Comment
  UCSB50637  Calochortus weedii Roberts, Fred 1982-7-8 Orange Laguna Niguel; canyone near Pacific Island Dr., 1.4 km ESE Aliso Peak, 1.1km NE Bench Mark 133 205 Comment
  RSA741726  Calochortus weedii var. intermedius R. E. Riefner 2008-6-11 8 -150 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fremont Canyon, Coalmine SCE Rd. 366 Comment
  RSA746536  Calochortus weedii var. intermedius R. E. Riefner 2008-6-5 8 -146 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
  UC1952572  Calochortus weedii var. intermedius D. Bramlet 1994-6-2 2378 Orange San Joaquin Hills. On ridgeline north of Little Sycamore Canyon. The site is located 244 m NE of Little Sycamore Canyon and 1.3 km west of Laguna Cyn. Road. Comment
  UC1952586  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; Laguna Beach 7.5 USGS Quadrangle 37 18 130m. N x 4 27 850m E. Comment
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Oct 17 2017
  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
  UCSB06831  Calochortus weedii var. intermedius Copeland, Herbert 1938-6-29 Orange Hills back of Laguna Beach Comment
  UCR160851  Calochortus weedii var. weedii Mark S. Brunell 1991-7-4 s.n. Orange Peninsular Range; Santa Ana Mtns., Hwy 74 c. 3 miles east of San Juan Hot Springs 427 Comment
  UCR113456  Calycadenia tenella R. E. Riefner Jr. 2000-5-6 20- 444 Orange Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along powerline on National Forest boundary 582 Comment
  RSA761935  Calycadenia tenella Robt Allen 2005-4-30 12496 Orange Caspers Wilderness Park, East Ridge Trail. 175 Comment
  RSA732151  Calystegia macrostegia A. C. Sanders, Fred M. Roberts 2008-4-22 35016 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
  SEINET12343666  Calystegia macrostegia J. F. Bright, Wyman, C. 1933-3-5 8014 Orange Santa Anna foothills Comment
  HSC6369  Calystegia macrostegia subsp. arida S. M. Clapp 1966-4-7 14 Orange Just SW of Lake Irvine 152 Comment
  CAS-BOT-BC221304  Calystegia macrostegia subsp. intermedia C. B. Wolf 1931-3-6 1865 Orange 2 miles from Orange County Park, on the road to Anaheim 152 Comment
  CSUSB674  Calystegia macrostegia subsp. intermedia Kirby W. Brown 1963-5-5 Orange Stevens Canyon, Irvine Ranch. 121 Comment
  IRVC982  Calystegia macrostegia subsp. intermedia D. Orr 1965-4-10 Orange Trabuco Road, 3mi E El Toro Marine Base. El Toro Comment
  UCR281552  Calystegia macrostegia subsp. intermedia Mitch Provance, Jeremiah George 2017-3-20 317- 118 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
  UC536955  Calystegia sepium subsp. binghamiae Lawrence M. Booth 1932-8-5 1359 Orange E of Huntington Beach (marsh border). Comment
  RSA0008257  Calystegia sepium subsp. limnophila L. M. Booth 1932-6-15 1192 Orange S.E. of Huntington Beach. Comment
  IRVC1057  Camelina microcarpa D. Van Gorden 1965-4-15 Orange 27th St. Newport Beach Comment
  POM272020  Camissonia bistorta Lyman Benson 1932-3-26 3194 Orange Dana Point. 61 Comment
  RSA497  Camissonia californica J. T. Howell 1927-6-26 213 Orange Claymine Canyon near Sierra Peak. 244 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
  HSC16447  Camissonia cheiranthifolia subsp. suffruticosa B. Francis 1964-5-2 43 Orange Newport Beach Comment
  NY679581  Camissonia cheiranthifolia subsp. suffruticosa L. S. Rose 1949-4-14 49049 Orange Sunset Beach. Comment
  POM123008  Camissonia cheiranthifolia subsp. suffruticosa Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA0073650  Camissonia cheiranthifolia subsp. suffruticosa Fred M. Roberts 2010-3-12 7181 Orange Southeast Coast: Dana Point Headlands: Harbor Point Park, South of Green Lantern and west of Dana Point Harbor, c.a. 150 meters SE Interpretive Center. 50 Comment
  RSA454059  Camissonia cheiranthifolia subsp. suffruticosa Josephine Derigo 1941-7-5 s.n. Orange Laguna Beach. Comment
  RSA698256  Camissonia cheiranthifolia subsp. suffruticosa R. H. McArthur 1934-4-7 s.n. Orange Near outlet of Santa Ana River Comment
  RSA542490  Camissonia micrantha Fred M. Roberts, T. Sholars, B. Stechmeyer 1988-3-29 3880 Orange Santa Ana Mountains: Hot Springs Canyon, 0.5 km by road north Hwy 74, 0.9 km ESE Juan Rancho Survey Marker. 223 Comment
  LA206063  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Norman C. Cooper; 1944-6-3 1326 Orange Balboa Beach Comment
  CAS-BOT-BC160446  Camissoniopsis cheiranthifolia subsp. suffruticosa H. E. McMinn 1924-7-19 1291 Orange Sunset Beach Comment
  JEPS31764  Camissoniopsis cheiranthifolia subsp. suffruticosa Alice King 1908-1 Orange Newport Comment
  UC306300  Camissoniopsis cheiranthifolia subsp. suffruticosa D. L. Crawford 1916-7-28 Orange Abalone Point Laguna Beach Region (sand dunes) Comment
  RSA271144  Cardamine californica var. integrifolia C. W. Tilforth, John Dourley, Walter Wisura 1978-3-10 1501 Orange along Ortega hwy 74, 2 miles NE of San Juan Forest Station, Santa Ana Mtns. Comment
  UCR237834  Cardamine flexuosa Mark A. Elvin 2003-2-2 2297 Orange South Coast, UC Irvine Arboretum, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 17 Comment
  POM187376  Cardaria chalepensis Ed Johnson s.n. Orange Westminster. Comment
  UC537121  Cardaria draba Lawrence M. Booth 1932-5-15 1197 Orange e of Huntington Beach Comment
  RSA441725  Cardionema ramosissimum L. C. Wheeler 1934-1-14 2357 Orange 1 mile E mouth of Aliso canyon near Laguna. 30 Comment
  UCR241910  Cardionema ramosissimum Fred M. Roberts 2012-5-10 7568 Orange Peninsular Ranges; Coastal Foothills, San Joaquin Hills, Buck Gully, south tributary, north slope Pelican Hill, just north of Pelican Hills Drive, 0.7 km north of Pelican Hill summit 154 Comment
  RSA603305  Carduus pycnocephalus Scott D. White 1997-6-12 5330 Orange East of San Juan Capistrano: San Juan Creek between Highway 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi E of I-15 / Hwy 74 junction. 46 Comment
  IRVC22650  Carduus tenuiflorus H. Camp 1986-4-24 7 Orange Bell Canyon, 1.4km NW Visitor Center, Casper's Regional Park 126 Comment
  RSA647884  Carduus tenuiflorus Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-24 42 Orange 1000 ft. northwest of Chino Hills State Park Boundary. 243 Comment
  CAS-BOT-BC118490  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Unspecified Comment
  RSA76  Carex praegracilis J. T. Howell 1928-4-7 904 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  CAS-BOT-BC118507  Carex praegracilis Helen D. Geis 1902-4-1 502 Orange Ditch banks Comment
  SEINET7572179 Image available Carex praegracilis Helen D. Geis 1902-1 505 Orange [no precise loc] Comment
  UC837277  Carex praegracilis Helen D. Geis 1902-1 Orange Comment
  UCR52608  Carex triquetra Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, Santa Ana Mountains 275 Comment
  CDA25905  Carpobrotus chilensis Mark A. Elvin, D. G. Kelch 2006-12-9 5292 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  UCD96837  Carpobrotus chilensis Gordon Pilone 1961-3-14 110 Orange Little Corona Del Mar. 30 Comment
  UCR196320  Carpobrotus chilensis Mark A. Elvin, Dean Kelch 2006-12-9 5292 Orange South Coast, Newport Backbay, Big Canyon, lower end 3 Comment
  RSA643429  Carthamus baeticus R. D. Goeden, D. W. Ricker 1965-7-7 s.n. Orange Puente Hills: Brea Blvd. at Tonner Cyn Rd. confluence of Brea and Tonner Canyons, NE edge of Brea 146 Comment
  CAS-BOT-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
  RSA588797  Castilleja affinis Fred M. Roberts, Dave Bontrager 1990-4-18 4563 Orange Rancho Mission Viejo: ridge between Christanitos and Gabino Canyons (Riverside Cement Lease Holding), 5.5 km SE Playa Survey Marker. 152 Comment
  UCR106285  Castilleja affinis B. G. Pitzer, M. Georgiady 1997-4-5 3075 Orange San Joaquin Hills, Crystal Cove State Park, along 'No Dogs' Trail (from parking area, along western bottom edge of ridge between Muddy Canyon & Moro Canyon), to just below intersection with 'Poles' trail 152 Comment
  UCR150610  Castilleja affinis Scott D. White 1997-5-6 5044 Orange Peninsular Ranges; Santa Ana Mountains, Lomas de Santiago. Santiago Canyon area: Ridgetop road N and west of Bolero Lookout 488 Comment
  RSA160549  Castilleja affinis J. D. Olmsted 1959-4-30 513 Orange North of Hidden Ranch in Black Star Can. ; 100 yards NW of Rattlesnake Rock; 5 mi. east of Irvine Lake. 716 Comment
  RSA264581  Castilleja affinis C. W. Tilforth, Dorothy Tilforth 1977-6-3 1259 Orange Large wash west of Weir Canyon, c. 10 mi. w. of Corona, south side of Santa Ana River. 152 Comment
  UC1012124  Castilleja affinis subsp. affinis F. W. Pennell and Carl Epling 1940-4-21 25149 Orange 5 mi e San Luis Capistrano (Route 74) 60 Comment
  CDA41345  Castilleja affinis subsp. affinis Ahlefeld & Pope 1957-4-1 s.n. Orange Irvine Ranch. 0 Comment
  JEPS21373  Castilleja applegatei subsp. martinii Milo S. Baker 1938-5-17 13296 Orange Santa Ana Mts. Comment
  RSA743515  Castilleja exserta subsp. exserta Fred M. Roberts 2008-4-9 6866 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 52 Comment
  UCSB45138  Castilleja foliolosa Woicik, Richard 1976-5-21 Orange Modjeska Canyon; near fire station Comment
  POM202724  Castilleja minor subsp. spiralis L. M. Booth 1932-6-28 1217 Orange Bolsas Marsh. Comment
  SD245474  Castilleja minor subsp. spiralis Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49584 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
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Jun 16 2016
  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
  CAS-BOT-BC48491  Ceanothus crassifolius T. Cass 1975-4-11 74 -671 Orange Southside Baker Canyon at Santa Ana Nat. forest boundary. 396 Comment
  CAS-BOT-BC48493  Ceanothus crassifolius Helen D. Geis 1902-1-1 516 Orange unspecified Comment
  CAS-BOT-BC48495  Ceanothus crassifolius Marcus E. Jones 1930-3-3 26514 Orange Santa Ana mountains Comment
  RSA1443  Ceanothus crassifolius J. T. Howell 1929-1-24 1219 Orange near crest of Santa Ana Mts. south of Sierra Peak. 762 Comment
  RSA398894  Ceanothus crassifolius E. Crow 1929-2-22 160 Orange Gypsum Canyon, Santa Ana Mountains. Near Corona. Comment
  RSA594804  Ceanothus crassifolius Fred M. Roberts 1992-2-26 4835 Orange Santa Ana Mts. Ridge west of Black Star Canyon and north of confluence of Black Star Canyon and Santiago Canyon, 4.3 km ESE Irvine Lake spillway. 353 Comment
  SD220711  Ceanothus crassifolius Jim Riley 2012-2-3 sjc 1 Orange San Juan Creek Arroyo 607 Comment
  UC1281316  Ceanothus crassifolius H. E. McMinn 1935-6-22 3921 Orange w Corona; Santa Ana Mts. Comment
  SEINET13945801 Image available Ceanothus crassifolius S. Lambert 1981-1 1957 Orange Cleveland Nat'l Forest, 19.7 mi E of hwy. 5 by hwy 74 at San Juan Trail, 2100 ft elev. 640 Comment
  RSA797906  Ceanothus integerrimus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49816 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  SD255266  Ceanothus integerrimus Robert F. Thorne, E. W. Lathrop 1977-5-18 49742 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  SD42450  Ceanothus integerrimus var. macrothyrsus Carl B. Wolf 1941-8-15 11153 Orange Santa Ana Mts. W. slope Santiago Truck Trail, 1.6 mi. below Main Divide Motorway 1219 Comment
  RSA17220  Ceanothus integerrimus var. puberulus Carl B. Wolf 1936-6-22 8002 Orange Santa Ana Mts. Slopes of Modjeska Pk. at abouit the Head of Harding Canyon. 1220 Comment
  CAS-BOT-BC51167  Ceanothus leucodermis Carl B. Wolf 1941-8-15 11152 Orange Santa Ana Mts., W. slope Santiago Truck Trail 4.4 mi. belw main divide motorway 1066 Comment
  RSA735268  Ceanothus megacarpus Minor Warne 1934-03 s.n. Orange Gypsum canyon Comment
  RSA548859  Ceanothus megacarpus var. megacarpus Fred M. Roberts 1988-3-9 3840 Orange Aliso-Wood Canyons regional Park: Niguel Hill, Seaview Park, 1.0km ENE Aliso Peak. 273 Comment
  SBBG45051  Ceanothus megacarpus var. megacarpus J. T. Howell 1927-6-26 228 Orange Claymine Cyn near Sierra Pk 701 Comment
  SD247717  Ceanothus oliganthus R. F. Thorne, C. W. Tilforth, E. W. Lathrop. 1977-4-27 49701 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  LA44923  Ceanothus oliganthus var. sorediatus W. Pequegnat; 1938-3-19 sn Orange Holy Jim Trial 944 Comment
  RSA608242  Ceanothus papillosus var. roweanus Steve Boyd, Bart O'Brien 1998-1-13 10076 Orange Santa Ana Mountains: north end of the range, NW of Pleasants Peak, along Main Divide Road (3S04) ca. 4.9 mi south of Oak Flat, at saddle between Hagador and Baker canyons. 1165 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
  CAS-BOT-BC53008  Ceanothus spinosus Carl B. Wolf 1936-6-17 7950 Orange Santa Ana Mts., along Ortega Highway, San Juan Canyon, 2/10 mi. W. of Riverside Co. line 274 Comment
  CDA23123  Ceanothus spinosus Scott D. White, J. Wood 2008-4-1 11848 Orange Chino Hills; Powerline access road just north of CHSP boudary and just west of Orange/San Bernardino county line. Approximately 1 mile northwest of Gilman Peak. Comment
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Nov 19 2013
  POM305816  Ceanothus spinosus Henry J. Ramsey, Henry J. Ramsey 1937-4-2 1043 Orange Capistrano Canyon. Comment
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Dec 17 2011
  UC1071372  Ceanothus spinosus A. Lewis Apr 1934 383 Orange Santiago Canyon Cleveland National Forest, Corona Quad. Comment
  UCR103213  Ceanothus spinosus Scott D. White 1997-2-19 4691 Orange Santa Ana Mtns, above Modjeska Canyon; proposed water tank site 488 Comment
  RSA3170  Ceanothus tomentosus subsp. olivaceus Carl B. Wolf 1932-3-8 2693 Orange Santiago Creek, 1 mil. E. Villa Park, W. base Santa Ana Mts. 152 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
  RSA1445  Ceanothus tomentosus var. olivaceus J. T. Howell 1929-2-11 1224 Orange trail from [Claymine] Canyon to Sierra Peak, Santa Ana Mts. 335 Comment
  UCR131879  Centaurea melitensis J. Mallory, V. McCoy 1995-7-3 6454- 134 Orange Santa Ana Mountains: Blind Canyon, c. 0.5 mi. NE of confluence w/ Santiago Canyon Wash; north of Irvine Lake. 300 Comment
  UCR191220  Centaurea melitensis A. C. Sanders 2008-4-29 35140 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
  RSA0065467  Centaurea melitensis J. Bruce Smiley 1940-5-4 s.n. Orange Santa Ana Wash. 457 Comment
  RSA791494  Centaurea melitensis R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49610 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station Comment
  UCD130042  Centaurea melitensis C. Davidson; G. Benny 1971-6-15 1549 Orange Brea Canyon, 1/2 mile north of Central Avenue, along Brea Cr, near bridge. Comment
  UCR154343  Centaurea repens Mark A. Elvin 2004-5-2 3404 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  UCR237924  Centaurium venustum Dick Newell, Don Millar, Shaina Oagarile 2012-6-19 275 Orange South Coast, Newport Beach, Buck Gully in San Joaquin Hills, 0.43 mi. SW of San Joaquin Trailhead 201 Comment
  UCSB69958  Centromadia fitchii Bramlet, D. 2008-9-17 Orange Coastal Plains and Basins; South Coastal Plain region; Upper Newport Bay, West Mesa, 76 m. E Irvine Ave. and 305 m. S of University Dr. 20 Comment
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Jul 17 2016
  CAS-BOT-BC288844  Centromadia parryi subsp. australis David D. Keck 1932-9-30 1897 Orange Ca 5 miles S of Santa Ana on road to Newport Beach Comment
  CAS-BOT-BC288847  Centromadia parryi subsp. australis John Thomas Howell 1927-6-30 2615 Orange 7 miles E of Long Beach 15 Comment
  SD218273  Centromadia parryi subsp. australis Mark A. Elvin 2003-8-24 3012 Orange Southern coastal: San Joaquin Hills, Irviine, UCI, 100 m north of the intersection of Shady Canyon Drive and Bonita Canyon Road. 71 Comment
  UCR256520  Centromadia parryi subsp. australis R. E. Riefner Jr. 2014-8-28 14- 310 Orange South Coast, City of Costa Mesa, Talbert Regional Park, immediately west of Starfish Ct., east of the Santa Ana River 4 Comment
  IRVC22187  Cerastium fontanum subsp. vulgare Fred M. Roberts 1985-4-11 1646 Orange Dana Point Headlands; Weyerhaeuser Horticultural Research Station property. Southern Coastal 61 Comment
  SD143757  Cercocarpus betuloides Scott D. White 1997-3-28 4827 Orange Santa Ana Mts: Above Modjeska Canyon: Proposed water tank site 424 Comment
  UCR100180  Cercocarpus betuloides Scott D. White 1996-12-20 4637 Orange Santa Ana Mountains, above Modjeska Canyon; proposed water tank site 488 Comment
  RSA787496  Cercocarpus betuloides var. betuloides Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49704 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA528042  Cestrum nocturnum A. C. Sanders 1990-10-6 10187 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Hwy 1 1 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
  RSA734657  Chaenactis artemisiifolia A. C. Sanders, Fred M. Roberts, Amber O'Neal, David E. Bramlet 2008-5-9 35317 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir. 346 Comment
  IRVC588  Chaenactis fremontii B. Mawdsley 1965-4-4 Orange Corona del Mar. Newport Beach Comment
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Dec 20 2006
  POM202372  Chaenactis glabriuscula var. glabriuscula L. M. Booth 1932-5-18 1056 Orange Newport Bay. Comment
  RSA638968  Chaenactis glabriuscula var. glabriuscula Valerie L. Soza, LeRoy Gross 1999-6-8 499 Orange Santa Ana Mountains: Santiago and Modjeska Canyons, above Tucker Wildlife Sanctuary, above the town of Modjeska 518 Comment
  RSA0008381  Chaenactis glabriuscula var. orcuttiana F. W. Peirson 1924-5-31 4671 Orange 5 miles southeast of Laguna Beach. Comment
  RSA734740  Chamaesyce albomarginata L. C. Wheeler 1946-8-8 6225 Orange Imperial Highway 1/4 mi. west of Caroline Ave, 2 mi. east southeast of Brea. Comment
  UCSB48225  Chamaesyce maculata Roberts, Fred 1981-6-24 Orange San Juan Capistrano; 3.2 km. S Saddleback Community College on Rancho Viejo Road 42 Comment
  RSA0013862  Chasmanthe floribunda Fred M. Roberts, Steve Boyd, Robt. Allen 2010-2-12 7174 Orange South Coast: San Joaquin Hills: Niguel Hill, Laguna Niguel, Sea View Park, 0.2 km WNW summit of Niguel Hill. 251 Comment
  IRVC26749  Chasmanthe floribunda Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3169 Orange UCI Arboretum Southern Coastal 15 Comment
  POM18084  Cheilanthes covillei Philip A. Munz 1923-9-7 7753 Orange Santa Ana Mountains: on trail from Holy Jim Canyon to Santiago Peak 1371 Comment
  UCR207554  Chenopodium O. F. Clarke 2004-11-23 s.n. Orange South Coast, Newport Back Bay 3 Comment
  IRVC15079  Chenopodium album T. W. Mulroy 1973-3-20 Orange Bolsa Chica [Salt Marsh] Comment
  RSA712937  Chenopodium ambrosioides Fred M. Roberts 2005-10-3 6302 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
  POM122883  Chenopodium ambrosioides Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA64759  Chenopodium ambrosioides var. ambrosioides F. W. Peirson 1924-8-29 5079 Orange 6 miles from Balboa on road inland along creek. Comment
  RSA734759  Chenopodium berlandieri A. C. Sanders, Fred M. Roberts 2008-5-6 35218 Orange Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  UCR192993  Chenopodium berlandieri A. C. Sanders, Fred M. Roberts 2008-5-6 35218 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  UCR193802  Chenopodium berlandieri A. C. Sanders, Fred M. Roberts 2008-7-3 35676 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 Comment
  POM201802  Chenopodium berlandieri var. sinuatum L. M. Booth 1933-9-2 1389 Orange Santa Ana River; flood bed near coast of Orange. Comment
  IRVC22549  Chenopodium californicum Fred M. Roberts 1985-5-1 1705 Orange Aliso Canyon, 2.1km NNE Aliso Peak, Aliso Viejo 67 Comment
  RSA749307  Chenopodium californicum Fred M. Roberts, Linda Farley 2008-3-28 7035 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
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Mar 23 2020
  UCR209380  Chenopodium californicum Fred M. Roberts, Linda Farley 2008-3-28 7035 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
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Mar 23 2020
  RSA625806  Chenopodium californicum Scott D. White, Noel Davis 1998-5-21 6546 Orange Santa Ana Mountains, Mission Viejo Area: Aliso Creek watershed, east of El Toro Road just N of junction w/ Valley Vista Way., 33 deg 40.5 N, 117 deg 37 W. 305 Comment
  CDA35060  Chenopodium chenopodioides Mark A. Elvin, B. S. Nerhus 2006-11-4 5249 Orange Southern Coastal; Huntington Beach; 1.5 km southwest of Wintersburg, southwest of junction Slater and Goldenwest; Shipley Nature Center. Comment
  RSA793261  Chenopodium macrospermum R. F. Thorne 1984-1 s.n. Orange Newport Back Bay Comment
  RSA234486  Chenopodium macrospermum var. farinosum James Henrickson 1970-9-5 5332 Orange 3 miles NW of Huntinton Beach, at southern margin of Bolsa Chica Mesa. 0 Comment
  UC536904  Chenopodium macrospermum var. halophilum L. M. Booth 1933-9-8 1390 Orange Anaheim Marsh; coast of Orange Co. Comment
  IRVC22761  Chenopodium multifidum Karlin G. Marsh 1984-9-28 Orange Balboa Peninsula, collected near Balboa Pier in Balboa Pk., Newport Beach 0 Comment
  IRVC394  Chenopodium murale D. DeVault 1965-3-4 Orange Newport Beach Comment
  IRVC398  Chenopodium murale J. Morgan 1965-2-5 Orange Corona del Mar High School. Newport Beach Comment
  RSA752040  Chenopodium murale Fred M. Roberts 2008-3-27 6808 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  RSA573428  Chenopodium murale Steve Boyd, Timothy S. Ross 1994-9-14 8347 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon trail at stream crossing in Aliso Canyon. 341 Comment
  RSA0036641  Chlorogalum pomeridianum var. pomeridianum Robt. Allen 2009-3-29 s.n. Orange Peninsular Ranges; Santa Ana Mountains region: Near Santiago Canyon. Rancho Sonado (Orange County Department of Education). Entrance is along Santiago Canyon Road, 0.23 miles NW of turnoff to Williams Canyon, 1.55 air miles SE of turnoff to Silverado, Canyon. Wild Bill Trail. 364 Comment
  RSA0004894  Chorizanthe chrysacantha var. compacta F. M. Reed 1928-4-27 5700 Orange Beach bluff, between Laguna and Newport Comment
  UCR266291  Chorizanthe procumbens D. E. Bramlet 2002-4-15 3267 Orange Pass area in Little Sycamore Canyon 122 Comment
  RSA65270  Chorizanthe procumbens F. W. Peirson 1924-5-30 6022 Orange Southward from Canada Salada. Comment
  CAS-BOT-BC255254  Chorizanthe staticoides Agnes M. Bowman 1899-6-1 s.n. Orange Santiago Cr. Comment
  UC205943  Chorizanthe staticoides D. L. Crawford 1916-5-5 Orange Laguna Beach Comment
  UC635059  Chorizanthe staticoides Herbert L. Mason 1926-4-25 2913 Orange 5 mi below Laguna; below Laguna 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
  IRVC27934  Chrysanthemoides monilifera A. C. Sanders, Mark A. Elvin 2003-10-12 27324 Orange Irvine; UCI Arboretum, UCI campus near intersection of Jamboree Blvd and Campus Dr. Southern Coastal 15 Comment
  UC218029  Cirsium arvense Ethelbert Johnson 1922-6-12 Orange Xalisco; near Huntington Beach Comment
  UCD130549  Cirsium arvense P. B. Kennedy 1924-2-13 s.n. Orange Huntington Beach District. Comment
  UCD130550  Cirsium arvense P. B. Kennedy 1924-2-13 s.n. Orange Huntington Beach District. Comment
  POM202172  Cirsium brevistylum L. M. Booth 1932-5-15 1199 Orange Santa Ana River, 1/2 miles from ocean Comment
  RSA721124  Cirsium californicum Minor Warne 1934-5-19 s.n. Orange Trabuco. Comment
  RSA0070675  Cirsium occidentale var. californicum P. A. Munz 1949-5-26 13372 Orange Head of Claymine Canyon, north end of Santa Ana Mts. 731 Comment
  UCR109769  Cirsium vulgare R. D. Goeden, Don W. Ricker 1965-7-7 s.n. Orange Puente Hills, Brea Blvd. at Tonner Cyn. Rd., confluence of Brea and Tonner Canyons, NE edge of Brea 146 Comment
  JEPS26610  Clarkia bottae Peter Kamb 1948-6-19 1110 Orange se slope Santiago Peak (Orange County-Riverside County <line>); Santa Ana Mts. 1219 Comment
  UC58859  Clarkia bottae W. C. Blasdale June 1891 Orange Santiago Canyon Comment
  UCSB48213  Clarkia bottae Roberts, Fred 1981-5-3 Orange Santa Ana Mtns; Hot Springs Canyon; 1.1km NNE San Juan Guard Station; near base of San Juan Trail 264 Comment
  RSA0059997  Clarkia bottae Karl Price 1988-5-21 48 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  RSA631396  Clarkia deflexa Valerie L. Soza, LeRoy Gross 1999-6-7 475 Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  SD181431  Clarkia deflexa Valerie Soza, LeRoy Gross 1999-6-7 475 Orange Santa Ana Mountains: West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  UCR3194  Clarkia deflexa Chuck Elliott 1964-5-15 s.n. Orange 0.25 mi [west of] past [Riverside] county line on Hwy 91 toward beach into Orange County 244 Comment
  RSA652350  Clarkia deflexa Robert Lloyd 1948-5-22 s.n. Orange Santa Ana Canyon 226 Comment
  RSA789218  Clarkia purpurea subsp. quadrivulnera Naomi S. Fraga, Duncan S. Bell 2009-5-11 2724 Orange Chiquita Trail 762 Comment
  SEINET7067523  Clarkia purpurea subsp. quadrivulnera A. G. Vestal 1947-6-12 s.n. Orange Canyon Road to Trabuco Canyon. Coordinate datum: NAD27. UTM Zone 11, 444428mE, 3723792mN. Comment
  RSA708234  Clarkia rhomboidea Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6236 Orange Modjeska Peak, west slope along summit road, 0.15km by air W summit. 1613 Comment
  UCR224163  Claytonia parviflora subsp. parviflora Fred M. Roberts 2008-3-19 6779 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
  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
  JEPS43343  Claytonia perfoliata subsp. perfoliata Alice King Apr 1908 Orange canyon above Orange County Park (Santa Ana); Santa Ana Comment
  RSA699989  Claytonia perfoliata subsp. perfoliata L. C. Hull 1939-3-7 s.n. Orange Laguna Hills 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
  CAS-BOT-BC92807  Clematis pauciflora Munz; Street; Williams 1919-5-3 2651 Orange Santa Ana River Canon [Canyon]. Comment
  UC1201823  Clematis pauciflora R. W. 1933-4-1 Orange near Capistrano Comment
  POM201932  Cleome isomeris L. M. Booth 1932-5-12 1045 Orange Newport Bay. Comment
  POM2489  Cleome isomeris P. A. Munz 1918-5-5 2188 Orange Laguna Beach. Comment
  RSA607432  Cleome isomeris L. C. Wheeler 1932-6-25 868 Orange Newport Bay. 3 Comment
  RSA649085  Collinsia heterophylla Karl Price 1988-4-29 12 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  UCR227635  Collinsia parryi Robt. L. Allen, Fred M. Roberts, Christopher M. Barnhill 2003-4-26 12365 Orange Santa Ana Mountains, San Juan Canyon, San Juan Loop Trail near Upper San Juan Campground 523 Comment
  HSC21476  Conium maculatum S. M Clapp 1966-4-10 40 Orange Just S of Brea Canyon Rd., 1 mi N of Brea, Union Oil property 61 Comment
  UCR138406  Conium maculatum Scott D. White, Brian Leatherman 1997-6-12 5310 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
  RSA0099309  Convolvulus althaeoides E. L. Paddock 1941-6-5 116 Orange Along Santa Fe RR, 150 ft W of Placentia Ave. Comment
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Jan 4 2020
  IRVC21693  Convolvulus arvensis Fred M. Roberts 1984-8-2 1364 Orange UC Irvine, along Adobe Circle Raod, 0.9km ENE campus center; 2.3km W French Hill, Irvine 30 Comment
  IRVC972  Convolvulus arvensis L. McCabe 1965-5-3 Orange [Newport] Back Bay: Newport Beach Comment
  OBI15328  Convolvulus arvensis Michael Ward 1970-8-22 v- 8 Orange Ca. 4 mi S of Seal Beach, NE of Pacific Coast hwy & Bolsa Chica St Pk at Bolsa Chica salt marsh Comment
  RSA0013914  Convolvulus arvensis Fred M. Roberts 2012-5-10 7582 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
  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
  RSA184134  Convolvulus arvensis I. L. Wiggins 1965-9-3 20317 Orange Roadside along Yorba Linda Boulevard, between State College Boulevard and Placentia Avenue, Fullerton. Comment
  UCSB6907  Convolvulus arvensis Haller, Norman 1953-4-25 Orange U.S. 101, 3 miles northwest of Laguna Beach Comment
  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
  UCR193278  Conyza bonariensis A. C. Sanders, Fred M. Roberts 2008-6-17 35512 Orange Peninsular Range; Santa Ana Mtns., middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  POM201740  Conyza bonariensis L. M. Booth 1932-6-9 1181 Orange Newport Bay Comment
  IRVC29827  Conyza canadensis Tom McCrainie, Mark A. Elvin 2006-9-23 1 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
  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
  RSA348137  Conyza canadensis I. L. Wiggins 1965-10-24 20286 Orange At corner of Yorba Linda and State College Blvds., Fullerton. Comment
  RSA718959  Conyza canadensis Fred M. Roberts, Robert L. Allen 2006-10-8 6421 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
  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
  CDA23616  Conyza coulteri T. McCrainie, Mark A. Elvin 2006-9-23 9 Orange Southern Coastal; Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives, 1.7 km (air) north-northwest of UC Irvine campus center. Comment
  IRVC15195  Conyza coulteri Karlin G. Marsh, Suzanne Watkins 1977-9-16 s.n. Orange Huntington Beach: Huntington Cental Park, Shipley Nature Center southern coastal Comment
  UCR80037  Conyza coulteri Scott D. White 1992-10-20 970 Orange Vicinity of city of Brea, Immediately north of Carbon Canyon Rd & east of Placentia Avenue +-1mi (air) SSEof Tonner Canyon. 183 Comment
  IRVC29812  Conyza floribunda Laura D. Lyons, Mark A. Elvin 2006-9-23 426 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
  SEINET12320812  Cordylanthus maritimus R. A. Schlising 1972-1 Orange Comment
  RSA356995  Cordylanthus maritimus subsp. maritimus Robert F. Thorne 1975-4-6 45586 Orange Head of Newport Bay. Comment
  UC1736370  Cordylanthus maritimus subsp. maritimus Dean W. Taylor 1994-6-7 14412 a Orange Newport Bay; along Backbay Drive at the junction with San Joaquin Hills Drive 6 Comment
  CHSC114117  Cordylanthus rigidus subsp. setiger Sandy Leatherman 2011-7-2 2011 -20 Orange Peninsular Ranges; Chino-Puente Hills region: 50 meters west of Carbon Canyon Road and Lions Canyon Road in the City of Brea; UTM Zone 11S; 427559.41E 3756239.97N. 274 Comment
  CAS-BOT-BC101294  Corethrogyne filaginifolia John Thomas Howell 1927-9-24 3106 Orange on n. s. of Santa Ana [Canon] Canyon 152 Comment
  CAS-BOT-BC101297  Corethrogyne filaginifolia Marcus E. Jones 1924-8-26 s.n. Orange Newport Comment
  JEPS41844  Corethrogyne filaginifolia L. M. Booth 1932-7-29 1332 Orange Newport Bay Comment
  LA205799  Corethrogyne filaginifolia W. Pequegnat; 1937-9-1 sn Orange Santa Ana Mountains, Top of Horsethief Trail Comment
  RSA699554  Corethrogyne filaginifolia L. C. Hull 1934-4-15 s.n. Orange Laguna Hills Comment
  RSA703091  Corethrogyne filaginifolia var. virgata Fred M. Roberts, Arthur Davenport 2003-9-11 6004 Orange Rancho Mission Viejo: Donna O' Neill Land Conservancy. Cristianitos Cyn., 0.79 km N Sycamore Gate 0.23 km w of Crisianitos Road. 126 Comment
  RSA397461  Cornus nuttallii T. W. Minthorn 1926-5-10 s.n. Orange Orange Co. Comment
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Mar 6 2019
  POM4853  Cosmos bipinnatus D. L. Crawford 1916-5-10 s.n. Orange Laguna Mts. Comment
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Sep 13 2014
  CAS-BOT-BC291359  Cotula coronopifolia L. Street 1917-5-12 1928 Orange San Juan Capistrano Comment
  RSA696769  Cotula coronopifolia Elisabeth Norland 1929-4-11 s.n. Orange Cypress, Calif. Comment
  CAS-BOT-BC291358  Cotula coronopifolia C. W. Tilforth; John Dourley 1969-4-22 184 Orange San Clemente Comment
  CAS-BOT-BC77624  Cotyledon Reid Moran 1993-6-30 31095 Orange South slope above 1500 Coast Highway, Newport Beach 15 Comment
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Dec 20 2019
  RSA17588  Cotyledon orbiculata C. B. Wolf 1936-7-8 8099 Orange Coast Hwy, Western end of Newport Bay. 9 Comment
  SD134612  Cotyledon orbiculata var. oblonga Reid Moran 1992-8-31 31093 Orange South slope above 1800 Coast Highway, Newport Beach. 14 Comment
  OBI5823  Crassula connata Carl B. Wolf 1931-3-6 1844 Orange 1/2 mi above Trabuco Oaks, Trabuco Cyn, W slope Santa Ana Mts 457 Comment
  CAS-BOT-BC427773  Crassula connata Ira L. Wiggins 1966-3-5 20498 Orange Along Highway S-18, about 4.5 mi. E. of Laguna Beach. Comment
  RSA348  Crassula connata var. erectoides J. T. Howell 1928-2-7 s.n. Orange Santa Ana River bottom, Rancho Santa Ana 152 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
  IRVC25205  Cressa truxillensis Fred M. Roberts 1986-11-4 3198 Orange Anaheim Bay, north of Hog Island, Seal Beach Naval Weapons Station 0 Comment
  JEPS43028  Cressa truxillensis L. M. Booth 1932-5-18 1052 Orange Newport Bay Comment
  RSA643445  Cressa truxillensis R. D. Goeden, D. W. Ricker 1965-7-7 s.n. Orange Tustin township, near Peters Canyon Channel, E of Santa Ana Marine Corps Air Station. 61 Comment
  RSA697347  Cressa truxillensis Keith E. Hoffmaster 1926-12-18 s.n. Orange Santa Ana Comment
  UC219257  Crocanthemum scoparium var. vulgare Munz and Johnston 1922-5-18 5307 Orange Santa Ana River Canyon, in a side canyon Santa Ana River Canyon 274 Comment
  IRVC21733  Croton californicus Fred M. Roberts, G. A. Marsh 1984-10-16 1421 Orange east bluff, Newport Back Bay, 3.6km W UCI campus center; 0.1km S Camp Survey Mark, Newport Beach 15 Comment
  RSA697576  Croton californicus Kenneth Beard s.n. Orange East of S. A. River on Edinger Road Comment
  RSA748257  Croton californicus A. C. Sanders, Fred M. Roberts 2008-6-17 35518 Orange middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  RSA785322  Croton californicus Dick Newell, Don Millar 2010-4-27 027 Orange Lomas de Santiago, Limestone Ridge Rd. at junction of Markel Spur Rd., overlooking The Sinks 427 Comment
  UCR210063  Croton setiger A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37194 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, west of Limestone Canyon Rd. 366 Comment
  UCSB48014  Croton setiger Roberts, Fred 1980-9-14 Orange Santa Ana Mtns.; San Juan Canyon, 0.6 km. SW Lower San Juan Picnic Ground; 1.9 km. WNW Sitton Peak 410 Comment
  RSA0043358  Crypsis schoenoides Fred M. Roberts, Laura Cohen 2012-10-31 7715 Orange San Joaquin HillsL Laguna Lake 1 (Upper Laguna Lake), north end. Laguna Coast Wilderness Park, ca. 5.1 km ENE Signal Hill. 113 Comment
  RSA648656  Crypsis schoenoides R. E. Riefner 2000-8-23 20 -731 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek & immediately S. of major stream fork 305 Comment
  RSA542556  Crypsis schoenoides Fred M. Roberts 1987-3-31 3302 Orange Lomas de Santiago: Lomas [Loma] Ridge, upper Serrano Canyon, east fork, reservoir, 2.7 kilometers SE Bolero Lookout, UTM 3727950m N, 441250m E. 350 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
  RSA0094684  Cryptantha clevelandii var. hispidissima C. B. Wolf 1932-3-8 2687 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  JEPS67671  Cryptantha intermedia Alice King 1908-3-9 Orange Anaheim plain Anaheim Comment
  RSA683170  Cryptantha intermedia Scott D. White, Amanda Duchardt 2003-4-10 9022 Orange Ridges & east-facing canyons above Trampas Canyon. 122 Comment
  RSA699344  Cryptantha intermedia Jeanne Parton 1934-3-7 s.n. Orange Lemon Heights Comment
  UC971737  Cryptantha intermedia L. M. Booth 1932-5-12 1028 Orange Newport Bay Comment
  UCR190966  Cryptantha intermedia A. C. Sanders, Fred M. Roberts 2008-4-22 35057 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
  UCR192450  Cryptantha intermedia A. C. Sanders, Fred M. Roberts 2008-3-25 34580 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
  RSA0076126  Cryptantha intermedia var. johnstonii P. Shirokawa 1998-5-7 12 Orange Cleveland National Forest- Trabuco Ranger District, 0.3 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 808 Comment
  RSA450853  Cryptantha microstachys Gordon Marsh 1978-3-17 s.n. Orange U.C. Irvine Ecological Preserve. 85 Comment
  RSA0079566  Cryptantha muricata var. jonesii Fred M. Roberts, Carol A. Roberts, Kirsten Winter 1995-5-6 4939 Orange Santa Ana Mountains: Ridge between Hot Springs Canyon and Viejo Canyon, San Juan Trail, 3.4 km WNW lower San Juan Picnic Ground. 546 Comment
  RSA394308  Cucurbita foetidissima F. R. Fosberg 1931-6-12 S- 5093 Orange Lower Santiago Can. Comment
  IRVC19540  Cupressus forbesii Karlin G. Marsh 1982-7-30 Orange Coal Canyon, west slope, at Claymont Clay Mine. Santa Ana Mountains Comment
  JEPS19317  Cupressus forbesii John Thomas Howell 1927-8-10 2983 A Orange w of Sierra Peak (at head of Claymine Canon); Santa Ana Mts., Claymine Canon 609 Comment
  UCR140975  Cupressus forbesii June Latting 1973-6-30 s.n. Orange Santa Ana Mountains, 2 miles south of Sierra Peak, on road toward Skyline Drive 732 Comment
  CAS-BOT-BC224408  Cuscuta californica John Thomas Howell 1927-6-3 2420 Orange Southern Puente Hills in the Santa Ana Canon [Canyon] 152 Comment
  CAS-BOT-BC224409  Cuscuta californica Carl B. Wolf 1932-7-2 3820 Orange Carbon Canyon, 1/8 mi. below La Vida Springs 213 Comment
  RSA0014076  Cuscuta californica Fred M. Roberts 2008-5-27 7004 Orange Lomas de Santiago: Loma Ridge, Hicks Cyn., c.a. 0.2km beyond Hicks Cyn., Gate, 2.2km WNW Bee Peak, Irvine Ranch conservancy 213 Comment
  RSA697161  Cuscuta californica R. H. McArthur 1934-5-19 s.n. Orange Live oak Canyon. Comment
  RSA254969  Cuscuta salina C. W. Tilforth 1975-9-3 1037 Orange Northeast shoreline of Upper Bay, Newport Beach Comment
  UCR10366  Cuscuta salina Thomas A. Zink 1971-1 s.n. Orange South Coast, Newport Back Bay near the west end of the water-skiing area 3 Comment
  RSA394864  Cuscuta salina Anstruther Davidson 1907-9-1 1780 a Orange Newport Comment
  JEPS43027  Cuscuta salina var. salina L. M. Booth 1932-7-1 1237 Orange Anaheim Creek Comment
  UCR228770  Cuscuta subinclusa Dick Newell, Don Millar 2011-7-19 213 Orange Peninsular Range; Santa Ana Mtns., foothills above Black Star Canyon Rd. (SCE access road), 3.15 mi. ENE (83 deg. ) of Irvine Lake dam 494 Comment
  CAS-BOT-BC299755  Cynara cardunculus M. L. Conrad; D. B. Dunn 1973-6-13 7133 Orange Vicinity of Laguna Beach 152 Comment
  UCR193061  Cynara cardunculus A. C. Sanders, Fred M. Roberts 2008-6-17 35474 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, East Loma Ridge Spur Road near Hicks Cyn. Haul Rd. 353 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
  UCR193829  Cynosurus echinatus A. C. Sanders, Fred M. Roberts 2008-7-16 35847 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, along road in canyon below Dripping Spring, c. 7.5 mi. ESE of Tustin 350 Comment
  RSA6041  Cyperus eragrostis Carl B. Wolf 1932-6-13 3721 Orange Fullerton, Rose Drive 53 Comment
  UCSB52418  Cyperus eragrostis 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
  UCR247877  Cyperus erythrorhizos Fred M. Roberts, Laura Cohen 2012-10-31 7713 Orange San Joaquin Hills, Upper Laguna Lake, north end. Laguna Coast Wilderness Park, c. 5.1 km east northeast of Signal Hill 113 Comment
  RSA78  Cyperus esculentus J. T. Howell 1927-7-15 408 Orange Santa Ana River, Rancho Santa Ana [Botanic Garden] 152 Comment
  UCSB57539  Cyperus involucratus Roberts, Fred 1984-2-18 Orange Casper's Regional Park; San Juan Canyon, Hwy.74, 4.2 km. NNE Visitor Center along San Juan Creek; 3.1 km. SW San Juan Guard Station 160 Comment
  CAS-BOT-BC114244  Cyperus laevigatus Carl B. Wolf 1932-7-2 3813 Orange Carbon Canyon, 1/8 mi below La Vida Springs. 213 Comment
  RSA488144  Cyperus laevigatus Fred M. Roberts, Gordon Marsh 1985-10-31 2533 Orange Santa Ana River: adjacent to Huntington Beach, 0.2 kilometers S [of] Adams Street bridge. 4 Comment
  RSA800666  Cyperus odoratus Justin M. Wood 2010-9-29 2744 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
  CAS-BOT-BC114047  Cyperus squarrosus LeRoy Abrams 1901-6-1 1771 Orange Laguna, San Juan Hills Comment
  SD260849  Cyrtomium falcatum R. E. Jr. Riefner 2012-2-2 12 19 Orange City of Dana Point, cliff and rocky intertidal area N 0.2 mi of Salt Creek lagoon. 9 Comment
  SD28072  Dactylis glomerata Carl B. Wolf 1932-6-13 3715 Orange Fullerton, Rose Drive 53 Comment
  RSA696  Datura stramonium J. T. Howell 1927-7-27 494 Orange Near ranch, Rancho Santa Ana 152 Comment
  RSA33529  Datura wrightii N. C. Cooper 1942-11-9 886 Orange Balboa. Comment
  RSA743455  Datura wrightii Fred M. Roberts 2008-7-10 7075 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 52 Comment
  UCR192977  Datura wrightii A. C. Sanders, Fred M. Roberts 2008-6-17 35465 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  UCSB10435  Datura wrightii Haller, Norman 1953-4-25 Orange U.S. 101, 3 miles northwest of Laguna Beach Comment
  RSA522  Daucus pusillus J. T. Howell 1927-6-8 57 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC299333  Deinandra fasciculata John Thomas Howell 1931-6-1 6625 Orange San Clemente Comment
  CHSC26109  Deinandra fasciculata Roger Shelby 1970-8-22 Orange Ca. 4 mi. N. of Huntington Beach, 1 1/2 mi. So. of Warner Ave. off Pacific Coast Hwy. in Bolsa Bay area. 0 Comment
  UC536895  Deinandra fasciculata Lawrence M. Booth 1932-5-12 1038 Orange Newport Bay Comment
  UCR256517  Deinandra fasciculata R. E. Riefner Jr. 2014-8-10 14- 281 Orange South Coast, city of San Clemente, Rancho San Clemente Trail, east c. 0.15 mi from Ave Salvador, and south c. 0.2 mi off Utility Access Road 202 Comment
  CAS-BOT-BC299325  Deinandra fasciculata Louis C. Wheeler 1932-6-25 861 Orange Bluff overlooking Newport Bay 7 Comment
  UCSB52429  Delairea odorata Roberts, Fred 1982-11-24 Orange Laguna beach: Blue bird canyon, west flank of temple Hill,1.2 km NE Cactus Point: 1.6km SW Top of the World School 190 Comment
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Dec 12 2018
  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
  UCR192230  Delphinium parryi A. C. Sanders, Fred M. Roberts 2008-5-6 35262 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
  CAS-BOT-BC82947  Dendromecon rigida G. R. Campbell 1949-4-18 13449 Orange Santa Ana Mountains. Santiago Peak. Comment
  RSA652150  Dendromecon rigida J. Bruce Smiley 1940-4-28 s.n. Orange Santa Ana Canyon (mouth). 701 Comment
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Nov 6 2013
  RSA5311  Dendromecon rigida subsp. rigida B. D. Stark 1933-1-5 4506 Orange 2 mi. so. of summit of skyline Drive on road along ridge to Santiago Peak. Santa Ana Mts. 1067 Comment
  RSA697422  Dentaria integrifolia R. H. McArthur 1934-3-3 62 Orange Forks of Laguna Canyon. Comment
  UCR239910  Descurainia pinnata O. F. Clarke 2004-4-5 s.n. Orange South Coast, Newport Back Bay 3 Comment
  POM202601  Descurainia pinnata subsp. halictorum L. M. Booth 1932-5-12 1047 Orange Newport Bay. Comment
  RSA0014989  Dicentra chrysantha Fred M. Roberts 2008-5-20 6989 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
  CAS-BOT-BC483630  Dichelostemma capitatum A. M. White 1974-6-1 1430 Orange Ca. 20 miles east of Santa Ana norht of Silverado Canyon 822 Comment
  RSA681019  Dichelostemma capitatum subsp. capitatum Fred M. Roberts, David E. Bramlet 2003-3-7 5567 Orange Donna O Neill Land Conservancy; West slopes of Christianitos Canyon, Middle Ridge Trail, 0.1km NW Gato Gate. 123 Comment
  HSC3089  Dichelostemma capitatum subsp. capitatum J. J. Wagoner 1965-4-11 21 Orange 3 mi. N of Modjeska Canyon along Irvine Rd. Comment
  RSA165174  Dichelostemma capitatum subsp. capitatum Mark Parratt 1962-4-11 140 Orange Beach head at Corona del Mar, Santa Ana Mt. Range Comment
  RSA208914  Dichelostemma capitatum subsp. capitatum Lee W. Lenz 1965-4-6 24585 a Orange Bluff above ocean, Dana Point. 30 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
  RSA698094  Dichelostemma capitatum subsp. capitatum Minor Warne 1934-03 s.n. Orange Laguna Hills. Comment
  RSA683844  Digitaria sanguinalis Scott D. White, Matt Carlton 2003-11-20 9872 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (San Juan Capistrano). 37 Comment
  RSA0062639  Digitaria sanguinalis Jack D. Ingwersen 1962-6-2 s.n. Orange Anaheim. 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
  SD248332  Dimorphotheca fruticosa R. E. Riefner Jr. 2011-7-1 11 79 Orange City of Newport Beach, beach area west of Shorecliff Road and Cameo Shores Road. 2 Comment
  UCR273943  Diospyros Mitch Provance 2007-7-11 707- 01 Orange Coastal Regions of Southern California, Between Irvine and Foothill Ranch, UCR South Coast Research and Extension Center 122 Comment
  SBBG6917  Diplacus X australis M. Van Rensselaer 1945-5-25 1883 Orange Laguna Cyn Comment
  CAS-BOT-BC151045  Diplacus brevipes F. W. Pennell; Carl Epling 1940-4-21 25148 Orange Route 74, 5 mi. E. of San Luis Capistrano 121 Comment
  RSA0045519  Diplacus puniceus Minor Warne 1934-3-3 s.n. Orange Laguna Canyon Forks. CP5. Comment
  CDA3684  Diplotaxis muralis Margaret Bellue, E. L. Paddock, Andreas 1943-8-3 Orange Santa Ana Botanical Garden, Fullerton. 0 Comment
  UCR186585  Dipsacus fullonum Robert DeRuff 2001-9-18 516 Orange Southern Coast, Newport Beach, Newport Back Bay, 0.4 mi. north of Big Canyon on Backbay Dr. 1 Comment
  RSA0120555  Distichlis littoralis Elisabeth Norland 1929-3-16 s.n. Orange Huntington Beach. Comment
  RSA743471  Distichlis spicata Fred M. Roberts 2008-10-9 7124 Orange Dana Point: Dana Point Headlands, CNLM Preserve, at base of cliff adjacent to Dana Strands Beach, 0.8km WNW Marine Institute (Dana Point Harbor). 3 Comment
  RSA539349  Dodecatheon clevelandii Fred M. Roberts, Karen Kirtland 1989-2-22 4184 Orange San Joaquin Hills: Upper Buck Gully, 0.7km NE Pelican Hill. 207 Comment
  LA208047  Drymocallis glandulosa W. Pequegnat; 1938-6-15 sn Orange Santa Ana Mountains, Santiago Peak 1734 Comment
  RSA701654  Drymocallis glandulosa Keith E. Hoffmaster 1935-5-5 s.n. Orange San Juan Canyon., Santa Ana Mts. Comment
  RSA0014995  Dryopteris arguta Fred M. Roberts 2008-5-14 6962 Orange Lomas de Santiago: Loma Ridge, upper Bee Flat Canyon below Loma Ridge Rd., 1.3 km N Bee Peak and 5.4 km NW Bolero Lookout, Irvine Ranch Conservancy. 337 Comment
  UCR174212  Dryopteris arguta A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33039 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  RSA84221  Dudleya abramsii subsp. parva F. W. Peirson 1924-5-31 4674 Orange 5 miles southeast of Laguna Beach. Comment
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Dec 20 2019
  LA204784  Dudleya blochmaniae subsp. blochmaniae Joan Malloy; 1952-5-18 sn Orange Salt Creek Beach, Laguna Comment
  RSA678502  Dudleya blochmaniae subsp. blochmaniae Fred M. Roberts, Robt Allen, Carol A. Roberts 2003-5-11 5863 Orange Dana Point Headlands: hilltop, 0.6km SSW Richard Henry Dana School south of Pacific Coast Highway and north of Scenic Drive. 73 Comment
  UC933206  Dudleya edulis Reid Moran 1949-7-2 3287 A Orange Aliso Canyon Laguna Beach Comment
  CAS-BOT-BC411404  Dudleya lanceolata John Thomas Howell 1927-7-3 2637 Orange Claymine Canyon, Santa Ana Mts. 304 Comment
  POM180505  Dudleya lanceolata L. R. Abrams 1917-6-25 s.n. Orange Balboa. Comment
  RSA397796  Dudleya lanceolata Ella M. Kennedy 1923-5-14 s.n. Orange Laguna Beach. Comment
  RSA50298  Dudleya lanceolata E. K. Balls 1949-5-21 13470 Orange spontaneous in Rancho Santa Ana Botanic Garden (original site), hillside east of Cactus Garden, Santa Ana River Canyon. 198 Comment
  RSA747701  Dudleya lanceolata Fred M. Roberts 2008-5-16 6974 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  RSA397815  Dudleya multicaulis Thekla Mohr 1920-06 s.n. Orange Hills near Laguna Comment
  RSA542535  Dudleya multicaulis Fred M. Roberts, K. G. Marsh, G. A. Marsh 1988-4-26 3943 Orange San Joaquin Hills: Pelican Hill, 0.6 km SE summit. 172 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
  RSA732271  Dudleya multicaulis A. C. Sanders 2008-4-29 35129 Orange Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir. 335 Comment
  UCR222628  Dudleya pulverulenta T. B. Salvato 2010-10-27 5103 Orange South Coast, Dana Point Headlands, Harbor Point Park, south of Scenic Dr. and Cove Rd., beyond the end of Green Lantern St., overlooking Dana Point Harbor 70 Comment
  UCSB50638  Dudleya pulverulenta Roberts, Fred 1982-7-8 Orange Niguel Hills; Niguel Hill, above Pacific Island Road, 1.4 km. ESE Aliso Peak; 2.6 km. SSW Alicia Fire Station 205 Comment
  CAS-BOT-BC109746  Dudleya stolonifera Reid Moran 1977-6-13 24230 Orange Willow Canyon, tributary of Laguna Canyon. 125 Comment
  NY387890  Dudleya stolonifera R. V. Moran 1948-6-23 3095 Orange This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SD129960  Dudleya stolonifera Reid Moran 1977-6-13 24230 Orange Willow Canyon, tributary of Laguna Canyon. 124 Comment
  UC806717 Image available Dudleya stolonifera R. V. Moran 1948-6-23 3095 Orange n-facing cliff near mouth Aliso Canyon (s of Laguna Beach); ; near mouth of Aliso Canyon, S of Laguna Beach, Orange Co. 7 Comment
  CAS-BOT-BC109771  Dudleya viscida E. K. Balls 1936-6-17 19736 Orange Santa Ana Mountains, San Juan Canyon, along Ortega Highway, 0.6 mile below San Juan Hot Springs. Comment
  UC115218  Dudleya viscida J. C. Nevin Oct 1881 Orange San Juan Comment
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Sep 1 2006
  SD236267  Dysphania multifida A. C. Sanders, Fred M. Roberts 2008-6-17 35476 Orange Peninsular Range; Santa Ana Mountains: Lomas de Santiago, Agustine staging area near Limestone Canyon Rd gate at Santiago Canyon Road (Black Star Canyon 7.5'Q) 259 Comment
  CAS-BOT-BC197033  Echinochloa colona M. F. Bradshaw 1902-7-1 s.n. Orange Orange Comment
  UCD60763  Echinochloa colona Ira L. Wiggins 1965-10-2 20269 Orange Curbway at corner of Longview Dr. and Dorothy Lane, Fullerton. Comment
  UCR44900  Echinochloa colona B. G. Pitzer, L. F. LaPre 1986-10-20 323 Orange Trabuco Road at intersection with Sand Canyon Avenue, NW of El Toro Marine Air Station 79 Comment
  RSA184152  Echinochloa colona I. L. Wiggins 1965-10-24 20295 Orange Yorba Linda Blvd. 1/4 mi. E of State College Blvd., Fullerton. Comment
  CAS-BOT-BC197176  Echinochloa crus-galli Ira L. Wiggins 1965-11-7 20356 Orange Between State College Blvd. and Troy High School campus, Fullerton Comment
  UCR207562  Echinochloa crus-galli 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
  UCD60958  Echinochloa esculenta Beecher Crampton 1965-10-27 7586 Orange 2 miles E of Irvine, UC South Coast Field Station. Comment
  JEPS45892  Echinochloa muricata Lawrence M. Booth 1932-7-25 1314 Orange Santa Ana River Channel near Coast Comment
  RSA443824  Echinodorus berteroi Gordon Marsh 1975-7-28 s.n. Orange Huntington Beach: East Garden Grove-Wintersburg Flood Control Channel, just N of Warner St. bridge crossing, (No. C05) Comment
  RSA794758  Echinodorus berteroi Justin M. Wood, Dustin M. Ray 2010-10-1 2775 Orange Santa Ana Canyon: Santa Ana River plus/minus 1 mi downstream of Gypsum Canyon Bridge, just upstream of large commercial development. Near drain outflow from Flood Control Levee on south side of channel. 110 Comment
  RSA0125888  Echium candicans Fred M. Roberts 2012-5-4 7545 Orange San Joaquin Hills: Buck Gully, along San Joaquin Hills Road, just west of Harbor Watch Park, 2.9 km W Signal Peak. 174 Comment
  JEPS30718  Eclipta prostrata Peter H. Raven 1961-10-15 16849 Orange Anaheim Street, Anaheim, Santa Ana River Bed Santa Ana River Bed, Anaheim, Anaheim Street 60 Comment
  UCR197678  Eclipta prostrata A. C. Sanders, Fred M. Roberts 2008-9-18 36069 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  RSA588991  Ehrharta calycina D. E. Bramlet 1994-6-2 2382 Orange San Joaquin Hills. Emerald Canyon 4.4 kilometers north of Pacific Coast Highway.. Laguna Beach 75 USGS Quad: 37 16 180m N X 4 27 820m E. 226 Comment
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Sep 8 2018
  UCR240173  Ehrharta erecta R. E. Riefner Jr. 2012-2-1 12- 15 Orange South Coast, city of Dana Point, Dana Point Harbor, vicinity of Puerto Pl. and Dana Point Harbor Drive 2 Comment
  RSA724039  Ehrharta erecta R. E. Riefner 2004-5-31 4 -194 Orange City of Lake Forest; Serrano Creek, SE of Bake Pkwy. 107 Comment
  SBBG128733  Ehrharta erecta R. E. Riefner Jr. 2012-2-1 12 -15 Orange Dana Point Harbor, vicinity of Puerto Pl and Dana Point Harbor Drive; Dana Point 2 Comment
  RSA791461  Eleocharis montana Keith E. Hoffmaster 1927-10-11 149 Orange Santa Ana. Comment
  RSA750923  Eleocharis montevidensis A. C. Sanders, Fred M. Roberts 2008-7-3 35701 Orange Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 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
  RSA735122  Eleusine coracana subsp. africana R. E. Riefner 2006-10-4 6 -477 Orange City of Huntington Beach, along Slater Ave. near Goldenwest St. 11 Comment
  RSA746529  Eleusine coracana subsp. africana R. E. Riefner Jr. 2008-12-23 8 -382 Orange City of Lake Forest, along Alton Pkwy, at Barranca Rd. 80 Comment
  RSA539359  Elymus glaucus subsp. glaucus Fred M. Roberts 1988-6-9 4069 Orange Santa Ana Mountains: Main Divide Truck Trail, Upper Silverado Canyon, 1.9 kilometer N Modjeska Peak., UTM 3733000mN, 449500mE 1128 Comment
  POM1331  Elymus multisetus Le Roy Abrams 1901-06 1823 Orange Santiago Peak Trail 915 Comment
  CAS-BOT-BC412640  Emex spinosa unspecified 1933-4-21 s.n. Orange Lemon Grove Comment
  CAS-BOT-BC131227  Encelia californica H. F. Copeland 1938-6-28 s.n. Orange Hills back of Laguna Beach Comment
  CLARK-A1045-1004  Encelia californica George K. Helmkamp 1978-3-4 Orange Newport Beach bluff along Newport Back Bay; Newport Beach 7.5'Q Comment
  RSA221019  Encelia californica E. W. Lathrop 1966-3-23 6082 Orange Skyline Drive between Tin Mine Canyon and Black Star Canyon, 6 miles W of Corona, Santa Ana Mts. 427 Comment
  RSA695627  Encelia californica Keith E. Hoffmaster 1927-4-5 s.n. Orange Near Newport, Santa Ana Mountains Comment
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Aug 27 2011
  UCR191222  Encelia californica A. C. Sanders 2008-4-29 35128 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
  UCR239635  Encelia californica Fred M. Roberts 2012-4-24 7503 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
  RSA734682  Encelia farinosa A. C. Sanders, Fred M. Roberts 2008-5-6 35215 Orange Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  UCR223422  Encelia farinosa Dick Newell, Don Millar 2011-3-1 068 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  RSA650630  Epilobium adenocaulon var. parishii Daniel Truong 1991-5-13 33 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  RSA723970  Epilobium brachycarpum R. E. Riefner Jr. 2005-10-5 05 -705 Orange City of Yorba Linda; Santa Ana River, Horseshoe Bend, near La Palma Rd. and Via Del Rio Rd. 99 Comment
  UCR231352  Epilobium canum A. C. Sanders, Kent Beaman 2011-9-27 39904 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail above Silverado, at major (dry) stream crossing, 3.95 km NNW (347 deg. ) of Santiago Peak 903 Comment
  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
  RSA542492  Epilobium canum subsp. latifolium Fred M. Roberts, Richard E. Riefner 1988-7-19 4119 Orange Santa Ana Mountains: Modjeska Peak, west slope, 1.1 km SW summit 1524 Comment
  RSA72173  Epilobium ciliatum subsp. ciliatum F. W. Peirson 1924-5-31 4654 Orange Laguna Canyon, near Laguna Beach. 107 Comment
  RSA72176  Epilobium ciliatum subsp. ciliatum F. W. Peirson 1924-5-31 4653 Orange Laguna Canyon, near Laguna Beach. 107 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
  UCR174208  Epipactis gigantea A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33030 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
  IRVC25079  Equisetum hyemale subsp. affine Karlin G. Marsh 1989-6-20 Orange Santa Ana mtns: Santiago Canyon, Fleming Park above Modjeska, ca 3.0km WSW Laurel Springs. Peninsular Ranges 440 Comment
  SD245161  Equisetum hyemale subsp. affine R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49565 Orange Santa Ana Mountains: San Joan Canyon at Lower Picnic Camp, just below Ortega Highway (74) 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
  UCR174026  Equisetum laevigatum A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33050 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
  SEINET3386349 Image available Eragrostis A. C. Sanders, Fred M. Roberts 2008-1 36091 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lomas de Santiago, Santiago Creek Canyon c. 0.5-0.8 miles above the highway bridge. Comment
  POM298879  Eragrostis mexicana subsp. virescens Frank W. Gould 1944-6-25 2362 Orange Tournat Ranch, Garden Grove. Comment
  UCD64312  Eragrostis pectinacea Beecher Crampton 1965-10-27 7583 Orange 2 miles E of Irvine, UC South Coast Field Station. Comment
  POM201866  Eremocarpus setiger L. M. Booth 1932-5-12 1021 Orange Newport Bay. Comment
  RSA184159  Eremocarpus setiger I. L. Wiggins 1965-10-24 20279 Orange Roadside along Skyline Drive near intersection with Raymond Street, Fullerton. Comment
  RSA430  Eremocarpus setiger J. T. Howell 1927-9-24 742 Orange Santa Ana Botany Garden 152 Comment
  IRVC763  Ericameria linearifolia D. Christy 1965-5-12 Orange Corona del Mar, Begonia St. Newport Beach Comment
  CAS-BOT-BC299500  Ericameria palmeri var. pachylepis Carl B. Wolf 1931-10-30 2944 Orange Rancho Santa Ana, Santa Ana Canyon 207 Comment
  RSA843  Ericameria palmeri var. pachylepis J. T. Howell 1927-9-24 748 Orange Santa Ana Botany Garden 152 Comment
  UCR220966  Ericameria palmeri var. pachylepis Dick Newell, Don Millar, Michael Dresser 2010-9-21 034 Orange South Coast, access road on east side of Laguna Canyon Rd. at Stage Coach, 1.22 miles north of Hwy 73 toll road 111 Comment
  UC1118806  Ericameria pinifolia A. Lewis 1934-4-1 397 Orange San Joaquin Hills Corona Quad., San Joaquin Hills 304 Comment
  UCR231187  Ericameria pinifolia A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39937 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1125 Comment
  UCSB48195  Erigeron foliosus Roberts, Fred 1981-6-26 Orange Santa Ana Mtns.; Viejo Cyn., 0.5km N Calif. Rte. 74; 2.7km ENE San Juan Guard Station 317 Comment
  IRVC14814  Erigeron foliosus var. foliosus A. S. Boughey 1968-7-9 384396 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  UCR241046  Erigeron karvinskianus Robert DeRuff 2011-6-20 345 B Orange South Coast, Upper Newport Bay, along bay side of Back Bay Dr. below Eastbluff North 3 Comment
  RSA0054860  Erigeron linifolius Keith E. Hoffmaster 1927-5-11 285 Orange Santa Ana. 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
  CAS-BOT-BC188114  Eriodictyon parryi P. C. Everett 1935-6-18 7216 Orange Summit of Santiago Peak, Santa Ana Mountains 1731 Comment
  UCSB57032  Eriodictyon parryi Roberts, Jr., Fred 1985-7-26 Orange Santa Ana Mtns.; Main Divide Truck Trail near Los Pinos saddle, 1.5 km. NE Los Pinos Peak, UTM 3725850m N, 457400m E 1257 Comment
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Feb 22 2019
  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
  POM201759  Eriogonum fasciculatum L. M. Booth 1932-5-18 1057 Orange Newport Bay Comment
  RSA393516  Eriogonum fasciculatum M. B. Dunkle 1933-4-9 3271 Orange Dana Point. Comment
  RSA658200  Eriogonum fasciculatum T. A. Daubert 1991-5-19 650 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  SDSU6522  Eriogonum fasciculatum B. Mastro 1966-9-10 188 Orange 1 mile south of San Clemente on Hwy. 5, near Capistrano. Comment
  UCR220033  Eriogonum fasciculatum Rebecca T. Vo 2010-6-5 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  CAS-BOT-BC253220  Eriogonum fasciculatum var. fasciculatum D. L. Crawford 1916-5-10 s.n. Orange Laguna Beach 304 Comment
  RSA737540  Eriogonum fasciculatum var. fasciculatum Fred M. Roberts 2008-3-12 6721 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  CAS-BOT-BC249946  Eriogonum fasciculatum var. foliolosum John Thomas Howell 1927-6-1 2407 Orange Southern Puente Hills in the Santa Ana Canon [Canyon] 152 Comment
  HSC17271  Eriogonum fasciculatum var. foliolosum C. L. Hitchcock, C. V. Muhlick 1964-3-17 23062 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  UCR131886  Eriogonum fasciculatum var. foliolosum J. Mallory, V. McCoy 1995-7-3 6454- 69 Orange Santa Ana Mountains: N-facing slope in Santiago Canyon, c. 0.5 mi. east of Santiago Canyon Rd; near Irvine Park 200 Comment
  SEINET6418404  Eriogonum fasciculatum var. foliolosum W. Halvorson 1969-8-22 360 Orange 8 miles east of El Toro 61 Comment
  RSA393245  Eriogonum gracile var. gracile J. T. Howell 1927-7-16 2781 Orange Hills on N side of Santa Ana Canyon. 152 Comment
  UC1930124  Eriogonum mohavense Scott D. White 2003-6-8 9514 Orange W MOJAVE DESERT: Near Lake Los Angeles. North of Avenue O and east of 150th St. E. Comment
  RSA539352  Eriogonum nudum var. pauciflorum Fred M. Roberts, Richard E. Riefner 1988-7-9 4118 Orange Santa Ana Mountains: Upper Silverado Canyon, Maple Springs Truck Trail, 11.5 km above Silverado Gate, 1.1 km NNW Modjeska Peak. 1350 Comment
  RSA13461  Eriogonum parvifolium var. parvifolium S. G. Stokes 1932-8-29 21 Orange Doheny's Palisades near San Clemente Comment
  CAS-BOT-BC263020  Eriogonum thurberi John Thomas Howell 1927-6-6 2452 Orange Santa Ana River bottom, Santa Ana Canon [Canyon] 152 Comment
  RSA237  Eriogonum thurberi J. T. Howell 1927-6-6 52 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC261799  Eriogonum wrightii var. subscaposum Carl B. Wolf 1933-8-24 5404 Orange Santa Ana Mts. Summit of Santiago Pk. 1731 Comment
  SEINET2051091 Image available Eriophyllum confertiflorum B. Pitzer 1987-4-24 504 Orange Santa Ana River at Gypsum Canyon, ca. .5 mi. N of Hwy 91. 113 Comment
  SEINET3386759 Image available Eriophyllum confertiflorum F. M. Reed 1925-5-14 4978 Orange Aliso Canyon. 30 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
  RSA12932  Erodium botrys E. R. Johnson 1935-4-8 6322 Orange 1 mile west of Atwood on South side of Railroad. Alt 300ft. Orange County Comment
  RSA590950  Erodium botrys Fred M. Roberts 1991-5-2 4774 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. 110 Comment
  RSA678494  Erodium brachycarpum Fred M. Roberts, Robert Allen, Carol Roberts 2003-5-11 5848 Orange Dana Point Headlands: 0.8km SSW Richard Henry Dana School north of Marguerita Drive. 76 Comment
  RSA678509  Erodium cicutarium Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1126 Orange Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  RSA747593  Erodium cicutarium Fred M. Roberts 2000-5-5 5321 Orange Lomas de Santiago: Loma Ridge, Agua Chinon Cyn., north slope, 1.6 kmSSW Bolero Spr. and 2.6 km W Bolero Lookout. 308 Comment
  UCR191367  Erodium cicutarium A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34622 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
  HSC7249  Erodium moschatum C. L. Hitchcock 1966-3-15 24138 Orange 1/2 mi. E of Brea Comment
  RSA732084  Erodium moschatum A. C. Sanders, Fred M. Roberts 2008-3-25 34555 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills. 259 Comment
  RSA562761  Erodium moschatum Steve Boyd, T. S. Ross 1992-5-19 7415 Orange Southern Santa Ana Mountains San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo (7S06) N into Aliso Canyon,. 366 Comment
  RSA800022  Eryngium aristulatum var. parishii Justin M. Wood 2011-6-28 4301 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. Just W of parking area. 25 Comment
  SD136131  Erythranthe floribunda Dylan T. Hannon 1992-6-12 165 Orange Arroyo Trabuco, below Santa Margarita Parkway Bridge Comment
  UCR210363  Erythrina T. B. Salvato, Billy Deane 2006-10-16 1926 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  OBI11782  Eschscholzia caespitosa Carl B. Wolf 1935-6-19 7222 Orange Santa Ana Mts, Main divide Motorway 1-2/10 mi below summit of Santiago Peak, E slope 1372 Comment
  SEINET7073414  Eschscholzia californica A. G. Vestal 1963-4-24 s.n. Orange La Paz Canyon, Rancho Mission Viejo. Coordinate datum: NAD27. Comment
  CAS-BOT-BC402924  Eschscholzia californica Agnes M. Bowman 1899-5-1 s.n. Orange Orange 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
  RSA16485  Eschscholzia californica var. peninsularis Percy C. Everett 1935-6-19 7222 Orange Santa Ana Mts, Main Divide Motorway. Comment
  RSA0010840  Eucalyptus camaldulensis Fred M. Roberts, Sandy Leatherman 2007-11-27 6673 Orange Yorba Linda: Santa Ana Canyon, Santa Ana River wash, S of E La Palma Road near Via Lomas de Yorba Linda, about 0.6 km W Gypsum Cyn. bridge. 113 Comment
  IRVC27878  Eucalyptus citriodora A. C. Sanders, Mark A. Elvin 2003-10-12 27312 Orange Irvine; UCI Arboretum, UCI campus near intersection of Jamboree Blvd and Campus Dr. Southern Coastal 15 Comment
  RSA0012593  Eucalyptus erythrocorys R. E. Riefner Jr. 2007-9-27 7 -414 Orange City Laguna Niguel, along Forbes Road near Crown Valley Parkway, W of I-5 Freeway. Comment
  SEINET3238887 Image available Eucalyptus globulus Willetta M. Smith 1951-1 Orange Laguna Beach. Along highway. Comment
  UCR132571  Eucalyptus megacornuta Robert DeRuff 2001-4-16 527 Orange Southern Coast, Newport Back Bay, Shellmaker Island 1 Comment
  UCR162345  Eucalyptus utilis Robert DeRuff 2000-1 523 Orange Southern Coast, Newport Beach, Upper Newport Back Bay. Northerly side of upper Big Canyon c. half way between the beginning of the upper canyon and Jamboree Road 30 Comment
  POM50213  Eucrypta chrysanthemifolia Helen D. Geis 1902-1 513 Orange Santiago Creek. Comment
  RSA3173  Eucrypta chrysanthemifolia Carl B. Wolf 1932-3-8 2690 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  UCR250854  Eucrypta chrysanthemifolia Dick Newell, Don Millar 2014-4-15 361 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Agua Chinon wash at the lower gate next to the 241 toll road 328 Comment
  UC1607994  Eucrypta chrysanthemifolia var. chrysanthemifolia Donald G. Nelson 1935-7-6 224 Orange San Juan Canyon Comment
  JEPS33692  Eulobus californicus John Thomas Howell 1927-6-26 2594 Orange Clyamine Canyon n. Santa Ana Mts. 304 Comment
  POM8655  Euphorbia crenulata P. A. Munz 1920-4-23 3728 Orange Santa Ana Mountains, Silverado Canon. 549 Comment
  SBBG127562  Euphorbia misera T. B. Salvato 2010-9-27 5106 Orange Dana Point Headlands, Harbor Point Park, S of Scenic Dr and Cove Rd, beyond the end of Green Lantern St, overlooking Dana Point Harbor 52 Comment
  UCR267185  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. 150 meters SE Interpretive Center 50 Comment
  SBBG128746  Euphorbia misera R. E. Riefner Jr. 2012-10-16 12 -518 Orange City of Dana Point, Dana Point Harbor, 'Bluff Top Trail' located near Camino Capistrano and Violet Lantern Sts 35 Comment
  UCR247411  Euphorbia nutans Roger E. Reinke 2013-11-3 s.n. Orange Santa Ana, 12782 Bubbling Well Rd. 41 Comment
  IRVC1308  Euphorbia peplus E. P. Cowper 1965-3-1 Orange [Newport] Back Bay. Newport Beach Comment
  RSA599182  Euphorbia peplus Scott D. White 1997-3-28 4849 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  RSA752715  Euphorbia peplus Fred M. Roberts, Sandy Leatherman, Jennifer Pareti 2009-4-14 7151 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
  RSA697594  Euphorbia peplus James Snow 1929-3-28 s.n. Orange SantaAna Gardens Comment
  UCR239646  Euphorbia polycarpa var. polycarpa Fred M. Roberts 2012-5-9 7553 Orange Santa Ana Mountains, Lake Forest, near Serrano Creek utility road, 0.3 m south-southwest of intersection of Commercentre and Dimension Drives 206 Comment
  UCR239867  Euphorbia serpens O. F. Clarke 2004-4-5 s.n. Orange South Coast, Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach 4 Comment
  RSA797436  Euphorbia serpillifolia Keith E. Hoffmaster 1933-6-19 s.n. Orange Santa Ana. Comment
  IRVC23251  Euphorbia serpyllifolia var. hirtula K. Kirtland 1987-8-25 Orange Santa Fe Channel along Edinger Ave.; disturbed flood channel with flowing water, sandy soil. Tustin Comment
  SD255148  Euphorbia supina R. F. Thorne 1977-11-21 49992 Orange Santa Ana Mountains: San Juan Canyon ca. 2.0 miles above San Juan Fire Station. Comment
  RSA552  Eustoma exaltatum J. T. Howell 1927-9-24 749 Orange Santa Ana River Bottom, Rancho Santa Ana 152 Comment
  UCR193048  Festuca arundinacea A. C. Sanders, Mitch Provance 2008-5-20 35410 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  CLARK-A1528-4649  Festuca californica John C. Roos 1930-5-20 3237 Orange Capistrano Beach Comment
  RSA0015959  Festuca perennis Fred M. Roberts 2012-4-24 7534 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
  CAS-BOT-BC487558  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 northbound lane 31 Comment
  CAS-BOT-BC502075  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -379 Orange City of Anaheim, Pearson Park, SE section of park, N of N. Helena St. and W. Cypress St., near jct of N Lemon St. and W. Cypress T. 44 Comment
  CAS-BOT-BC502097  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -383 Orange City of Anaheim, Pearson Park, SE section of park, N of N. Helena St, and W. Cypress St., near jct. of N. Lemon St., and W. Cypress St. 44 Comment
  RSA0116287  Ficus microcarpa R. E. Riefner Jr. 2015-8-30 15 -376 Orange City of Anaheim, Pearson Park, near center of park, N of North Helena St. and West Cypress St. 45 Comment
  UC2046890  Ficus microcarpa R. E. Riefner Jr. 2015-8-29 15 -368 Orange City of Rancho Santa Margarita, Trabuco Marketplace, Rancho Santa Margarita Blvd. at Plano Trabuco. Comment
  CAS-BOT-BC474739  Ficus rubiginosa R. E. Riefner, Jr. 2015-8-29 15 -369 Orange City of Rancho Santa Margarita, Trabuco Marketplace, Rancho Santa Margarita Blvd. at Plano Trabuco 363 Comment
  OBI8010  Foeniculum vulgare Kurt R. Neisess 1975-12-21 Orange In the Fullerton Hills area Comment
  LA207685  Frangula californica P. C. Everett; 1935-6-17 7137 Orange Santa Ana Mountains, Coldwater Canyon, 1/2 mi. above Glen Ivy Resort 457 Comment
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Jan 23 2015
  SD120875  Frangula californica subsp. californica Reid Moran 1975-7-18 22598 Orange near Yeager Mine, upper Trabuco Canyon, Santa Ana Mountains 725 Comment
  RSA391394  Frankenia grandifolia Albert J. Perkins 1909-7-4 s.n. Orange Arch Beach. Canon near beach. Comment
  RSA391400  Frankenia grandifolia Albert J. Perkins 1923-6-28 s.n. Orange Laguna Beach. Comment
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Jul 15 2013
  RSA391402  Frankenia grandifolia E. Yale Dawson 1948-8-15 5108 Orange Bolsas bay Comment
  RSA0055057  Frankenia grandifolia Jim Shevock 1970-10-19 522 Orange Newporft Back Bay. 3 Comment
  PASA433  Frankenia grandifolia var. campestris Frank W. Peirson 1924-8-29 Orange 4 miles south of Santa Ana Comment
  IRVC24106  Frankenia salina Fred M. Roberts 1985-9-6 2220 Orange Laguna Beach; Sycamore Hills along Laguna Cyn Rd; N of jct with El Toro Road. Southern Coastal 75 Comment
  UC1494288  Frankenia salina Molly Whalen and Liz Evans 1978-6-2 510 Orange near Bolsa Chica Visitors Center (just off Hwy 1) Comment
  UCSB68455  Frankenia salina Fishman, Paul; Williams, H. 1969-9-23 Orange Upper Newport Bay, below east park (bluff?) Comment
  HSC16189  Fraxinus dipetala S. M. Clapp 1966-4-10 33 Orange 10 mi. into Silverado Canyon 183 Comment
  RSA5313  Fraxinus dipetala B. D. Stark 1933-1-5 4502 Orange 2 mi. so. of summit of skyline Drive on road along ridge to Santiago Peak. Santa Ana Mts. 1067 Comment
  POM9233  Fraxinus dipetala P. A. Munz, R. D. Harwood 1920-4-25 3737 Orange Santa Ana Mountains, Silverado Canyon. 549 Comment
  RSA295258  Fritillaria biflora H. W. Nixon 1932-04 2437 Orange San Juan Capistrano. Comment
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Feb 20 2012
  RSA749449  Fritillaria biflora Fred M. Roberts 2009-4-11 6885 Orange Lomas de Santiago: Loma Ridge, upper Dripping Springs Cyn., 0.9 km NE Bee Peak and 1.2 km WNW Dripping Springs. 448 Comment
  UCR132979  Fritillaria biflora Adrian Wolf 2000-4-15 459 Orange Santa Ana Mtns., North Ranch Policy Plan Area, North Baker Canyon Road 335 Comment
  CAS-BOT-BC422453  Fumaria officinalis Ira L. Wiggins 1965-12-5 20366 Orange 2 mi. E. of Atwood on N. side of Orangethorpe Avenue. Comment
  UCR99855  Fumaria parviflora Scott D. White 1993-3-5 1119 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  OBI42766  Fumaria parviflora Larry Summers 1983-4-18 s.n. Orange Tustin, Irvine Ranch, Field 120 at the intersection of Bryan and Culver. At the edge of a tomato field 46 Comment
  RSA567  Funastrum cynanchoides var. hartwegii J. T. Howell 1927-6-3 19 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  LA208397  Galium angustifolium Norman C. Cooper; 1944-6-4 Orange San Juan Canyon 304 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
  RSA700193  Galium angustifolium L. C. Hull 1934-4-24 s.n. Orange Trabuco Canyon. Comment
  RSA708287  Galium angustifolium Scott D. White, Jennifer H. Jones 2005-3-31 10860 Orange South Coast: City of Laguna Beach. 549 Nyes Place. Proposed home site on ca. 0.5 acre. 91 Comment
  UCR140808  Galium angustifolium Robin G. Marushia 2004-4-16 018 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
  POM18138  Galium angustifolium subsp. angustifolium Philip A. Munz 1923-9-7 7761 Orange Santa Ana Mts. Trail from Trabuco Canyon to summit. 1220 Comment
  POM201752  Galium angustifolium subsp. angustifolium L. M. Booth 1932-6-4 1152 Orange Newport Lagoon. Comment
  POM367702  Galium angustifolium subsp. angustifolium M. B. Dunkle 1934-6-18 3965 Orange Upper San Juan Canyon. 610 Comment
  RSA7473  Galium angustifolium subsp. angustifolium Carl B. Wolf 1933-8-24 5397 Orange Summit of Santiago Peak, Santa Ana Mountains. 1732 Comment
  SBBG47439  Galium angustifolium subsp. angustifolium N. C. Cooper 1944-6-4 1372 Orange San Juan Cyn 304 Comment
  UC729870  Galium angustifolium subsp. angustifolium Carl B. Wolf 1932-7-2 3827 Orange 1/8 mi below La Vida Springs; Carbon Canyon 213 Comment
  POM186338  Galium angustifolium subsp. angustifolium Joseph A. Ewan 1932-7-29 7736 Orange Road around Newport Lagoon. Comment
  RSA588726  Galium aparine Fred M. Roberts Jr. 1990-5-7 4604 Orange Rancho Mission Viejo: Ridge south of Blind Canyon and east of Christianitos Canyon, TRW Lease Hold, 5.0 km NE Clemente Survey Marker. 152 Comment
  RSA610219  Galium aparine Fred M. Roberts Jr., Julie Vanderwier 1997-4-29 5017 Orange Bolsa Chica Salt Marsh (U.S. Fish and Wildlife Service cell 17), west edge of old oil field, 1.7 km SSE Chica Survey Mark. 0 Comment
  UCSB47621  Galium aparine Roberts, Fred 1980-4-3 Orange Dana Point: hills, 1.0km NE Dana Hills High School 75 Comment
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Oct 28 2018
  RSA274919  Galium parisiense R. John Little 1976-6-17 1757 Orange Mid Crow Canyon north of Burks Rd. Comment
  UCR144152  Galium porrigens Scott D. White, Amanda Duchardt 2003-5-1 9162 Orange Santa Ana Mountains, slopes above west side of Trampas Canyon 183 Comment
  RSA700908  Galium siccatum Unspecified s.n. Orange Black Star Canyon Comment
  UC536927  Galium trifidum var. pacificum Lawrence M. Booth 1932-7-4 1244 Orange Newport Lagoon Comment
  IRVC24227  Garrya flavescens Fred M. Roberts, Gordon A. Marsh, Karlin G. Marsh 1985-10-1 2287 Orange Santa Ana Mountains; Silverado Canyon, Silverado Truck Trail, 1.5km NW Shrewsbury Spring. Peninsular Ranges 766 Comment
  RSA303834  Garrya flavescens var. pallida Jim R. Shevock 1972-1-16 1334 Orange Silverado Canyon. 610 Comment
  CDA5170  Gaura drummondii Johnson 1939-8-3 5 Orange Brea. 0 Comment
  CDA5171  Gaura drummondii Johnson 1939-8-3 5 Orange Brea. 0 Comment
  CDA5176  Gaura drummondii Johnson 1939-8-1 Orange North Whittier Heights. 0 Comment
  RSA38480  Gaura parviflora E. L. Paddock 1943-6-8 12730 Orange Whittier Road 1/4 mile west of Puente Street, Brea. Comment
  RSA39481  Gaura parviflora E. L. Paddock 1943-6-8 12730 Orange Whittier Road 1/4 mile 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
  UCR177952  Geranium carolinianum Scott D. White, Brian Leatherman 1997-5-6 5037 Orange Peninsular Ranges; Santa Ana Mtns., Lomas de Santiago; Santiago Canyon area; unnamed tributary to Santiago Creek flowing from the SW, directly west of Pancho Canyon 396 Comment
  OBI82301  Geranium incanum var. multifidum Unknown 2012-6-16 12 -404 Orange City of Dana Point, Dana Point Harbor Drive at Island Way. 11 Comment
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Apr 23 2020
  RSA797023  Geranium incanum var. multifidum R. E. Riefner Jr. 2011-7-1 11 -78 Orange City of Laguna Beach, South Crescent Bay, vicinity of Circle Drive and Island Way. 5 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
  RSA769341  Gilia angelensis E. W. Lathrop 1974-6-27 7421 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA139632  Gilia angelensis John Ingram 1960-3-14 246 Orange 2 blocks east of Knotts Berry Place, on La Palma Avenue, Buena Park. Comment
  SEINET272170  Gilia capitata subsp. abrotanifolia G. K. Helmkamp, E. A. Helmkamp 1997-4-24 1660 Orange Cleveland National Forest ; Cleveland National Forest 1.6 mi. SE of Ortega Hwy (CA-74) on Rd. 7-S14. UTM 10km cell: MH-5E 1N. San Juan Hot Spring 549 Comment
  RSA552949  Githopsis diffusa subsp. candida Fred M. Roberts 1989-4-20 4293 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
  RSA612342  Glycyrrhiza lepidota L. C. Wheeler 1932-7-9 942 Orange Santa Ana River 5 miles below Prado. 152 Comment
  IRVC25462  Gnaphalium californicum Fred M. Roberts 1987-4-21 3385 Orange Aliso Creek, Aliso Creek Bike Trail, 3.0km ENE Moulton Peak, Aliso Viejo 73 Comment
  UCR209658  Gnaphalium californicum Fred M. Roberts 2008-5-16 6986 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
  RSA688984  Gnaphalium canescens subsp. microcephalum Fred M. Roberts, David E. Bramlet 2003-4-10 5642 Orange Rancho Mission Viejo: Donna O'Neill Land conservancy, Back Road, ridge between Cristianitos Cyn, and Segunda Deshecha Canada, 1.45km WNW Gato Gate. 216 Comment
  RSA860  Gnaphalium chilense J. T. Howell 1927-10-29 781 Orange Bryant Ranch near Long Beach. 15 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
  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
  IRVC18037  Gnaphalium luteo-album Gordon A. Marsh 1983-8-27 Orange San Joaquin Freshwater Marsh, NE side near pump house; center of road. Irvine Comment
  RSA718964  Gnaphalium luteoalbum Fred M. Roberts, Robert L. Allen 2006-10-8 6416 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
  POM4622  Gnaphalium palustre P. A. Munz 1918-5-4 2209 Orange Laguna Canyon. Comment
  RSA666098  Gnaphalium palustre Fred M. Roberts, Michelle Lee 2001-6-4 5482 Orange Rancho Mission Viejo: Chiquita Ridge, 0.2km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. 218 Comment
  CLARK-A1528-1859  Gnaphalium peregrinum John C. Roos 1965-6-16 Orange Dana Point Comment
  POM4639  Gnaphalium ramosissimum C. B. Bradshaw s.n. Orange Santiago Canyon, Santa Ana Mts. Comment
  UCR100580  Gnaphalium stramineum B. G. Pitzer 1996-4-30 2764 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR102016  Gnaphalium stramineum B. G. Pitzer 1997-3-25 3018 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  CDA6068  Gnaphalium stramineum Walden 1951-5-24 Orange Dr. Beebe, southwest corner Gilbert & Orange, Anaheim. 0 Comment
  UCR207597  Grindelia O. F. Clarke 2004-5-19 s.n. Orange South Coast, Fairview Park, Costa Mesa 24 Comment
  RSA681891  Grindelia camporum Scott D. White, Michael Honer 2003-6-19 9575 Orange Southwestern Santa Ana Mtn. Foothills: Rancho Mission Viejo. Steep mountain slopes south of San Juan Ck and west of Trampas Cyn. 91 Comment
  UCR242757  Grindelia camporum Fred M. Roberts 2012-5-10 7578 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
  UCR52299  Grindelia camporum B. G. Pitzer, D. C. Hawks 1986-12-17 0382 A Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, on Santiago Cyn Rd., c. 1.0 mi SW of [Irvine Lake] Santiago Reservoir 305 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
  IRVC4033  Grindelia camporum var. bracteosa A. S. Boughey 1968-7-16 422 Orange road to Signal Peak. San Joaquin Hills Comment
  POM4604  Grindelia camporum var. bracteosa D. L. Crawford 1916-5-5 s.n. Orange Laguna Beach Comment
  RSA161302  Grindelia camporum var. bracteosa Peter H. Raven 1959-4-30 14038 Orange Base of ocean bluffs just N of San Clemente. Comment
  RSA202179  Grindelia camporum var. bracteosa L. M. Booth 1932-5-24 1092 Orange Newport Bay, Public Golf Course. Comment
  RSA5917  Grindelia camporum var. bracteosa C. B. Wolf 1932-7-2 3810 Orange Orange County, Valencia Ave, Olenda, opposite the Olinda Pilgrim Church 152 Comment
  CAS-BOT-BC305206  Grindelia hirsutula Carl B. Wolf 1932-7-2 3810 Orange Olinda. Valencia Ave., opposite Olinda Pilgrim Church 152 Comment
  RSA735171  Gutierrezia californica A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35288 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir. 300 Comment
  RSA864  Gutierrezia californica J. T. Howell 1927-7-28 510 Orange Nolina Canyon, Rancho Santa Ana 152 Comment
  UC75919  Gutierrezia californica E. A. Zumbro 1902-1-1 374 Orange Comment
  CAS-BOT-BC302136  Gutierrezia sarothrae John Thomas Howell 1927-9-24 3111 Orange Hills on n. side of Santa Ana Canon [Canyon] 213 Comment
  UCD85224  Hainardia cylindrica A. A. Beetle 1942-4-19 3092 Orange 20 miles S of Santa Ana, road to Laguna. Comment
  UCR197795  Haplopappus squarrosus A. C. Sanders, Fred M. Roberts 2008-9-18 36098 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon at the highway bridge above Irvine Lake 300 Comment
  UCR231201  Haplopappus squarrosus A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39939 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1143 Comment
  RSA554631  Haplopappus venetus Scott D. White 1992-9-29 897 Orange Vinicity of Brea, immediately N of Carbon Canyon Rd & E of Placentia Ave., +/- 1 mi. (airline) S/SE of Tonner Canyon. 183 Comment
  RSA0066585  Harpagonella palmeri Fred M. Roberts 1993-4-23 4855 Orange Mission Viejo: Mesa just W of Bridgeton Road near jct. of Ridgemark above Arroyo Trabuco, 4.8 km NNE Trabuco Survey Marker. 152 Comment
  RSA0066592  Harpagonella palmeri R. A. Hamilton 2001-5-17 s.n. Orange Crystal Cove State Park, near Pelican Point. The site is located 305m south of Pacific Coast Highway and 671m east of Cameo Shores Drive. 30 Comment
  RSA871  Hazardia squarrosa var. grindelioides J. T. Howell 1927-10-22 758 Orange Bluffs near eastern boundary, Rancho Santa Ana 213 Comment
  RSA725521  Hedera helix Fred M. Roberts, Robert L. Allen 2007-9-28 6603 Orange Santa Ana Mtns.: Silverado Cyn., along Silverado Cyn. Rd. at eastern edge of town of Silverado. 347 Comment
  HSC93899  Hedypnois cretica D. Atwood 1993-3-28 17716 Orange Bolsa Chica Ecological Reserve, California Dept. of Fish and Game 0 Comment
  RSA113254  Hedypnois cretica E. K. Balls 1955-4-4 20433 Orange Coastal Strand, mouth of Santa Ana River, W bank, Hwy 101. 3 Comment
  RSA602118  Hedypnois cretica Scott D. White 1997-5-6 5045 Orange Santa Ana Mountains. Santiago Canyon area: Ridgetop road N and W of Bolero Lookout. 427 Comment
  SEINET11196714 Image available Hedypnois cretica D. Atwood 1993-3-28 17716 Orange Bolsa Chica Ecological Reserve, California Dept. of Fish and Game. Comment
  CAS-BOT-BC306302  Hedypnois cretica Ira L. Wiggins 1966-3-31 20572 Orange Along south side of Brea Olinda Boulevard, near Carolina Avenue Comment
  JEPS35550  Helenium puberulum L. M. Booth 1932-7-9 1285 Orange Bolsas Creek Comment
  LA204751  Helianthemum scoparium A. H. Lange; 1951-4-15 sn Orange Balboa Comment
  RSA734962  Helianthemum scoparium A. C. Sanders, Fred M. Roberts, A. O'Neal 2008-5-9 35309 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir. 346 Comment
  UCR224033  Helianthemum scoparium Justin M. Wood 2010-3-31 1448 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
  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
  RSA542646  Helianthemum scoparium var. vulgare Fred M. Roberts 1988-4-11 3899 Orange Lomas De Santiago; Loma Ridge, Upper Limestone Canyon, c.a. 3.2 km NNW Bolero Lookout. Comment
  CAS-BOT-BC305446  Helianthus annuus John Thomas Howell 1927-7-27 2846 Orange Hills on n. side of Santa Ana Canon [Canyon] 152 Comment
  RSA0027431  Helianthus annuus Fred M. Roberts 2013-7-18 7665 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
  UCR109773  Helianthus ciliaris R. D. Goeden, Don W. Ricker 1965-7-7 s.n. Orange Laguna Hills, Veeh Ranch, c. 1.5 mi. west of El Toro 91 Comment
  CAS-BOT-BC305655  Helianthus ciliaris T. C. Fuller 1962-6-7 8874 Orange Veeh ranch, n. of El Toro, ca. 11 mi. s.e. of Tustin Comment
  POM360029  Helianthus ciliaris E. L. Paddock 1942-7-21 11291 Orange Toler Ranch, N. side Ocean Ave., 1/4 mi W of La Mirada Rd. La Habra. Comment
  RSA263727  Helianthus gracilentus E. W. Lathrop 1970-1-28 7125 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA7324  Helianthus gracilentus E. R. Johnson 1933-7-6 5167 Orange 1/2 mile south of Mexican houses, Rancho Santa Ana 122 Comment
  RSA751324  Helianthus gracilentus A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35293 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir. 300 Comment
  RSA498167  Helianthus nuttallii subsp. nuttallii M. B. Dunkle 1933-3-5 3082 Orange San Juan Canyon 304 Comment
  UC537260  Helianthus nuttallii subsp. parishii L. M. Booth 1933-8-26 1388 Orange Newport Lagoon Comment
  IRVC29807  Heliotropium curassavicum Laura D. Lyons, Mark A. Elvin 2006-9-23 421 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
  UCR100455  Heliotropium curassavicum B. G. Pitzer 1996-4-30 2770 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  RSA233017  Heliotropium curassavicum var. oculatum Christopher Davidson, Gerald L. Benny 1971-6-15 1556 Orange Carbon Canyon, 1 mile SW of Carbon Canyon mineral spring. Comment
  CSUSB739  Heliotropium curassavicum var. oculatum Cesareo Perez 1971-5-15 Orange Huntington State Beach Pacific Coast Highway @ Brookhurst, Huntington Beach, CA. Comment
  SEINET10802443  Helminthotheca echioides David B. Dunn Dunn 22400 Orange Collected around the condominium-Pacific Island Estates in Laguna Niguel area. 30 Comment
  RSA572921  Hemizonia australis J. Mallory 1993-8-27 6366 -D-03 Orange E and north of Cliffs on Mesa, S of Los Patos Ave. and green Street, Bolsa Chica Wetlands. Comment
  CDA7030  Hemizonia fasciculata E. Dudley 1951-5-1 Orange Costa Mesa. 0 Comment
  POM202163  Hemizonia fasciculata L. M. Booth 1932-5-12 1038 Orange Newport Bay Comment
  RSA232233  Hemizonia fasciculata James Henrickson 1970-7-25 5069 Orange 2 miles N of Huntington Beach along NE margin of Bolsa Chica Salt March. 0 Comment
  RSA699662  Hemizonia fasciculata Keith E. Hoffmaster 1928-5-29 s.n. Orange San Onofre. CP5. Comment
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Nov 19 2013
  UCR191218  Hemizonia fasciculata A. C. Sanders 2008-4-29 35142 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
  RSA542437  Hemizonia paniculata Fred M. Roberts 1988-7-29 4125 Orange Aliso Viejo: Upper Wood Canyon, 1.5 km N Moulton Peak. 165 Comment
  RSA542438  Hemizonia paniculata Fred M. Roberts 1988-5-25 3877 Orange Ranch Mission Viejo: Lower Canada Chiquita, 2.0 kilometers SSE Medium Rancho Survey Mark. 88 Comment
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Apr 29 2020
  UCR146950  Hemizonia parryi subsp. australis Mark A. Elvin 2003-8-24 3012 Orange Southern Coastal, San Joaquin Hills, Irvine, UCI, 100 m N of the intersection of Shady Canyon Drive and Bonita Canyon Road 72 Comment
  UCR158036  Hemizonia parryi subsp. australis Adrian Wolf 1998-7-1 410 Orange South Coast, Peters Canyon Channel, east of channel near Harvard Ballfield, between Harvard Ave. & creek, south of Warner Ave. to Barranca 15 Comment
  UCR158461  Hemizonia parryi subsp. australis Adrian Wolf 1998-7-1 418 Orange South Coast, north Newport Oil Fields and East Banning Park; between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 6 Comment
  SEINET13095118  Hemizonia parryi subsp. australis David D. Keck 1933-9-29 2537 Orange Seal Beach. Comment
  RSA695596  Hemizonia pungens subsp. pungens Keith E. Hoffmaster 1937-6-27 s.n. Orange Midway City. Comment
  RSA0072401  Heteromeles arbutifolia A. C. Sanders, Fred M. Roberts 2008-7-16 35840 Orange Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin. 391 Comment
  UCR222859  Heteromeles arbutifolia T. B. Salvato 2010-10-27 5138 Orange South Coast, Dana Point Headlands, Hilltop Park, north of Scenic Dr. and west of Green Lantern St., overlooking Dana Point Harbor 84 Comment
  UCR231191  Heteromeles arbutifolia A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39936 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1152 Comment
  RSA0072396  Heteromeles arbutifolia David A. Young 1969-5-26 P 495 Orange Firestone Boy Scout Camp in Brea Canyon. 274 Comment
  IRVC25170  Heterotheca grandiflora Fred M. Roberts, B. Fugle 1986-10-1 3148 Orange Laguna Hills; creek channel along Cabot Rd. ca. 1.0km N Pacific Park Pkwy. Southern Coastal 99 Comment
  UCD150987  Heterotheca grandiflora D. S. Park 2010-4-25 32 -2 Orange Whiting Ranch Wilderness Park, along trail. 226 Comment
  UCR223954  Heterotheca grandiflora Fred M. Roberts, Carol A. Roberts 2008-9-28 7110 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve near northeast Gate, 0.5 km west Marine Institute, Dana Point Harbor 75 Comment
  CAS-BOT-BC318904  Heterotheca grandiflora J. Ewan 1931-10-3 s.n. Orange 1/2 mile above La Vida Soda Springs, Carbon Canyon Comment
  CAS-BOT-BC318907  Heterotheca grandiflora Ira L. Wiggins 1966-3-16 20523 Orange Near Orange County refuse dispoasl area Comment
  RSA0075813  Heterotheca grandiflora Dolores Perez 1981-4-11 6 Orange Carbon Canyon Rd., 6 miles E. of junction with Ca Hwy 90. Comment
  RSA25872  Hibiscus trionum E. L. Paddock 1941-9-8 120 Orange L.J. Vejar Ranch, E of Yorba Linda. Comment
  UCD150988  Hieracium argutum D. S. Park 2010-4-25 31 Orange Whiting Ranch Wilderness Park, along trail. 254 Comment
  CAS-BOT-BC207961  Hoffmannseggia glauca Goodwin 1933-7-6 s.n. Orange Unspecified Comment
  SBBG120959  Hoita macrostachya A. C. Sanders, F. M. Roberts, M. Balk 2006-7-20 33029 Orange San Juan Cyn, from Lower San Juan Picnic Area to ca. 1 mi downstream, parallel to Hwy 74 and near Riverside Co line 366 Comment
  SD168141  Hoita macrostachya G. A. Marsh, K. G. Marsh 1976-7-8 Orange Santa Ana Mountains, Lower San Juan Picnic Grounds, near Cal. Rt. 74. Comment
  SEINET192291 Image available Holcus halepensis C. B. Wolf 1932-6-13 3724 Orange Fullerton Malvern and Nicholas Ave 53 Comment
  LA207960  Holodiscus discolor W. E. Pequegnat; 1937-8-11 59 Orange Santa Ana Mountains, N side Santiago Peak 1725 Comment
  RSA488126  Holodiscus discolor Fred M. Roberts 1985-7-26 2091 Orange Main Divide Truck Trail, Upper Horsethief Canyon watershed, 2.3 km SE Trabuco Peak 1223 Comment
  RSA698657  Holodiscus discolor Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts. PR8. Comment
  CAS-BOT-BC150006  Holodiscus discolor var. discolor P. C. Everett 1935-6-18 7221 Orange Santa Ana Mts., Summit of Santiago Pk. 1731 Comment
  CAS-BOT-BC285000  Hordeum depressum P. A. Munz 1918-5-5 2192 Orange Laguna Beach Comment
  SD181760  Hordeum depressum Valerie Soza, K. Clark,F. Roberts,W. Miller,L. R. Gross,G. Wallace 2001-4-4 1132 Orange Northern edge of Huntington Harbor: Seal Beach U.S. Naval Weapons Station, southeastern edge of Seal Beach National Wildlife Refuge, along roadside 3 Comment
  UCR104647  Hordeum depressum D. E. Bramlet 1996-4-20 2458 A Orange Marsh adjacent to Upper Newport Bay, c. 122m SE of the end of University Dr. and 15.2 m west of the Delhi channel Comment
  RSA704078  Hordeum intercedens D. E. Bramlet, Fred M. Roberts 2003-5-8 3433 Orange Donna O'Neill Reserve. S-Mid E area of the reserve 91m west of Cristianitos Rd. and 152m south of the E-W Rd. 119 Comment
  SBBG119309  Hordeum intercedens D. Bramlet 1998-5-20 2622 Orange San Juan Hills, ca. 488 m W of La Pata Ave and 1.22 km N of Prima Deshecha Canada; ca. 457 m E of the old ridgeline rd Comment
  CDA32412  Hordeum jubatum R. L. Pope 1961-7-18 Orange Santa Ana Freeway. 0 Comment
  RSA627754  Hordeum marinum subsp. gussoneanum Scott D. White 1998-5-31 s.n. Orange UCI Campus; Southwest of Farm School site (now proposed as Student Rec. Ctr.). 24 Comment
  UCR207598  Hordeum marinum subsp. gussoneanum O. F. Clarke 2004-5-19 s.n. Orange South Coast, Fairview Park, Costa Mesa 24 Comment
  UCR217289  Hordeum murinum Mark A. Elvin 2003-3-30 2393 Orange South Coast, north side of UC Irvine Preserve, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  CAS-BOT-BC289365  Hordeum murinum subsp. glaucum Ira L. Wiggins 1966-3-19 20537 Orange Irvine Ranch, southeast of U.C. Irvine Comment
  RSA55  Hordeum murinum subsp. leporinum J. T. Howell 1928-3-17 869 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  UCR48545  Hordeum vulgare Jack Easton 1987-4-21 s.n. Orange Southern Coast, Kain property, San Clemente, mouth of Trafalgar Canyon, just behind the beach 30 Comment
  POM224742  Horkelia cuneata subsp. puberula Philip A. Munz 1936-4-20 14606 Orange Laguna Beach, Mt. Olympus 152 Comment
  JEPS17473  Hydrocotyle umbellata F. W. Peirson 1924-10-19 5237 Orange Wintersberg Comment
  CAS-BOT-BC312647  Hymenothrix loomisii 1943-12-1 s.n. Orange Costa Mesa Comment
  RSA450874  Hypericum canariense Fred M. Roberts 1984-4-29 1361 Orange Dana point Headlands: 0.5km NW Dana Point Harbor; 0.4km S Richard Henry Dana School 75 Comment
  RSA458246  Hypericum formosum var. scouleri Claire Kibbe 1936-07 19972 Orange Santa Ana Canyon. Comment
  RSA732168  Hypochaeris glabra A. C. Sanders, Fred M. Roberts 2008-3-25 34538 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UC1543186  Hypochaeris glabra Donald G. Nelson 1935-4-6 234 Orange e San Juan Capistrano; Cleveland National Forest Comment
  UC1543205  Hypochaeris glabra Donald G. Nelson 1935-4-14 277 Orange Newport Beach Comment
  UCR261715  Hypochaeris radicata Dick Newell, Don Millar 2015-3-24 397 Orange South Coast, San Joaquin Hills, on Serrano Ridge 0.25 mi. due east of 73 Toll Rd. overcrossing 249 Comment
  IRVC26523  Hypochaeris radicata Mark A. Elvin 2004-2-22 3148 Orange UCI Arboretum Southern Coastal 15 Comment
  SBBG128744  Ipomoea cairica R. E. Riefner Jr. 2012-11-27 12 -563 Orange City of Laguna Beach, S Crescent Beach, Circle Way near Cliff Drive 3 Comment
  UCR271002  Isocoma menziesii Mitch Provance, Travis Kegel 2016-4-8 416- 61 Orange Coastal Regions of Southern California, Newport Beach, W of the W end of 16th Street, and E of the Banning Oil Fields 32 Comment
  CAS-BOT-BC311675  Isocoma menziesii var. sedoides Helen D. Geis 1902-1-1 545 Orange Laguna Beach Comment
  POM359491  Isocoma menziesii var. vernonioides F. R. Fosberg 1930-7-10 3197 Orange Anaheim Landing. [Los Angeles Co. on label] 2 Comment
  RSA573427  Isocoma menziesii var. vernonioides Steve Boyd, Tim Ross 1994-9-14 8348 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon trail at stream crossing in Aliso Canyon. 341 Comment
  RSA5815  Isocoma menziesii var. vernonioides C. B. Wolf 1932-6-28 3807 Orange Edge of field on Bryant Ave., 300 ft. W. of N.E. corner of N.W. 1/4 of S.E. 1/4 sect27 T4S RNW 9 Comment
  SBBG16549  Isocoma menziesii var. vernonioides E. B. Carlton 1961-9-3 C 4 Orange Laguna Beach, E on Hidden Valley Rd, ca. 1 mi from Broadway and S. Coast Rd 91 Comment
  SD136909  Isocoma menziesii var. vernonioides Steve Boyd, Tim Ross 1994-9-14 8344 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness area, Lucas Canyon trail at stream crossing in Aliso Canyon 341 Comment
  UC1118854  Isocoma menziesii var. vernonioides A. Lewis 1934-4-1 396 Orange San Joaquin Hills Corona Quadrangle Comment
  RSA0031742  Isocoma menziesii var. vernonioides R. F. Thorne 1977-11-21 50822 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  IRVC19387  Isomeris arborea R. L. Allen 1975-2-18 Orange Dana Hills High School nature preserve; common. Dana Point Comment
  RSA658217  Isomeris arborea T. A. Daubert 1991-5-26 664 Orange Tucker Wildlife Sanctuary, Modjeska Canyon, fire road. Comment
  UCR222627  Isomeris arborea T. B. Salvato 2010-10-27 5104 Orange South Coast, Dana Point Headlands, Harbor Point Park, south of Scenic Dr. and Cove Rd., beyond the end of Green Lantern St., overlooking Dana Point Harbor 70 Comment
  CAS-BOT-BC426246  Jepsonia parryi John Thomas Howell 1929-2-7 4094 Orange Claymine Canon, n. Samta Ana Mts. 243 Comment
  POM9770  Jepsonia parryi Gordon Nicholsen 1921-01 s.n. Orange Santa Ana Canyon. Comment
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Aug 8 2010
  UC112094  Juglans E. B. Babcock 1907-9-9 Orange on ranch of E.S. Ware 1 mi n Garden Grove Comment
  CAS-BOT-BC101918  Juglans californica Ira L. Wiggins 1965-10-27 20310 Orange stream near Los Angeles County Line, along Brea Canyon Road Comment
  RSA226639  Juglans californica Christopher Davidson, B. Benny 1971-6-15 1555 Orange Carbon Canyon, 1 mile SW of Carbon Canyon mineral spring. Comment
  UCR222643  Juglans californica D. E. Bramlet 2008-6-5 4291 Orange Peninsular Range; Santa Ana Mtns. Foothills, tributary to Wier Canyon, 731 m north of SCE transmission line and 229 m west of Weir Canyon Rd. 257 Comment
  UCSB47595  Juglans californica Roberts, Fred 1980-4-5 Orange Highway 74; San Juan Canyon; 0.4km sw Lower San Juan Picnic Ground; Santa Ana Mountains 390 Comment
  RSA0011056  Juglans californica J. R. Bruff 1936-11 s.n. Orange 1416 Durant St. Santa Ana. Comment
  RSA0011068  Juglans californica Carl B. Wolf 1934-9-21 6141 Orange At lower end of Brea Canyon, Puente Hills 183 Comment
  SD237482  Juglans hindsii R. E. Riefner Jr. 2009-8-12 09 168 Orange Foothills of Santa Ana Mountains, near Silverado, Cook's Corner area, Santiago Canyon Road at Lawrence Canyon Road. USGS Quad: Lake Forest. 334 Comment
  UCR216055  Juglans hindsii R. E. Riefner Jr. 2009-8-12 09- 168 Orange Peninsular Range; Foothills of Santa Ana Mtns., near Silverado, Cook's Corner area, Santiago Canyon Road at Lawrence Canyon Rd. 335 Comment
  CAS-BOT-BC110027  Juncus acutus Peter H. Raven 1957-9-28 11401 Orange Just north of Huntington Beach. 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
  UCR158029  Juncus bufonius Adrian Wolf 1998-5-15 292 Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 Comment
  UCR97575  Juncus bufonius B. G. Pitzer 1997-4-15 3139 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
  RSA678522  Juncus bufonius var. bufonius Fred M. Roberts, M. Lee, Kristen Szabo 2001-4-13 5427 Orange Rancho Mission Viejo: South of San Juan Creek, 0.6km WNW Median Rancho Survey Marker. PCR Vernal Pool 2. 183 Comment
  RSA697809  Juncus bufonius var. bufonius Ophelia Frost 1932-5-2 s.n. Orange On H. B. Boulevard-about 2 miles out. Comment
  RSA754062  Juncus macrophyllus A. C. Sanders, Fred M. Roberts 2008-7-16 35859 Orange Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  UCD169360  Juncus macrophyllus A. C. Sanders; Fred M. Roberts, Michelle Balk 2006-7-20 33045 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. 366 Comment
  UCR174228  Juncus macrophyllus A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33045 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
  RSA110  Juncus rugulosus J. T. Howell 1927-7-18 423 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  POM201725  Juncus textilis L. M. Booth 1932-6-7 1159 Orange Newport Lagoon. Comment
  UCR112936  Juncus textilis R. E. Riefner Jr., Adrian Wolf 2000-1-24 20- 108 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of Santiago Creek and immediately south of major stream fork 305 Comment
  UCR80024  Juncus textilis Scott D. White 1992-10-1 955 Orange City of Brea, immediately north of Carbon Canyon Road & east of Placentia Ave. c. 1 mi (airline) S-SE of Tonner Canyon. 183 Comment
  RSA794757  Juncus torreyi Justin M. Wood, Dustin M. Ray 2010-10-1 2774 Orange Santa Ana Canyon: Santa Ana River plus/minus 1 mi downstream of Gypsum Canyon Bridge, just upstream of large commercial development. Near drain outflow from Flood Control Levee on south side of channel. 110 Comment
  RSA101  Juncus xiphioides J. T. Howell 1927-7-18 427 Orange Santa Ana River, Rancho Santa Ana. 152 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
  POM21178  Juncus xiphioides Helen D. Gels 1902-11 s.n. Orange Santa Ana [River?] 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
  UCR246394  Juniperus rigida var. conferta R. E. Riefner Jr. 2012-10-21 12- 521 Orange South Coast, city of Newport Beach, Corona del Mar, c. 0.5 mi south from the intersection of Poppy Ave./Ocean Blvd. at Little Corona Beach 12 Comment
  UCR275232  Juniperus virginiana Robert DeRuff 1998-1 508 Orange South Coast, upper Newport Bay, below and north of intersection of Back Bay Dr., with Eastbluff Dr. 3 Comment
  JEPS15116  Keckiella antirrhinoides R. St. John 1931-3-31 201 Orange Mouth of Silverado Canyon; Corona Quad. 457 Comment
  RSA79829  Keckiella antirrhinoides F. W. Peirson 1922-5-18 3027 Orange Santa Ana River. 122 Comment
  UC1063331  Keckiella antirrhinoides R. St. John 1931-3-31 201 Orange Mouth of Silverado Canyon; Corona Quad. 365 Comment
  UCR220971  Keckiella antirrhinoides subsp. antirrhinoides Dick Newell, Don Millar 2010-5-25 23 Orange Peninsular Range; Santa Ana Mtns. Foothills, along roadside of Black Star Canyon Rd. at Baker Canyon 290 Comment
  CAS-BOT-BC235531  Keckiella antirrhinoides var. antirrhinoides Helen D. Geis 1904-5-1 735 Orange Silverado Canon [Canyon], Santa Ana Mountains Comment
  CAS-BOT-BC235532  Keckiella antirrhinoides var. antirrhinoides A. J. Perkins 1909-6-1 s.n. Orange Orange County Park Comment
  NY786527  Keckiella antirrhinoides var. antirrhinoides F. R. Fosberg S 5082 Orange Lower Santiago Can. Comment
  CAS-BOT-BC235723  Keckiella cordifolia F. W. Pennell; E. M. Harvey 1949-6-29 26806 Orange Ortega Highway, above San Juan Capistrano 365 Comment
  LA209275  Keckiella cordifolia Norman C. Cooper; 1944-6-4 1340 Orange San Juan Canyon 304 Comment
  NY790204  Keckiella cordifolia S. McCoy 1932-6-3 243 Orange Near Brea Comment
  UC1294011  Keckiella cordifolia E. K. Balls 1958-6-27 23283 Orange 5 mi se Silverado (Gate); Santa Ana Mts., Silverado Canyon 1097 Comment
  CHSC109274  Kickxia elatine Scott D. White; Matt Carlton 2003-11-20 9866 Orange Santa Ana Mountain Foothills: San Juan Creek in San Juan Capistrano 24 Comment
  SD134374  Kickxia elatine Craig Reiser 1991-7-1 Orange Live Oak Road near the foothills of the Santa Ana Mountains Comment
  RSA683072  Koeleria macrantha Fred M. Roberts 2003-3-13 5592 Orange Donna O'Neill Land Conservancy: Ridge west of Christianitos Canyon, 1,320m NW Sycamore Gate and 880m W Cristianitos Rd., ( 33 deg 29' 32N, 117 deg 34' 18W; [UTM 11S-04 46 917mE, 37 05 804mN 179 Comment
  UCR243183  Koeleria macrantha Chris E. True, Sara Jo Dickens 2013-4-30 s.n. Orange Aliso Canyon, Aliso and Wood Canyons Park, south of Aliso Viejo 61 Comment
  CDA7193  Koelreuteria bipinnata T. B. Salvato, K. Kurtz, Mitch Provance 2006-10-15 1903 Orange South Coast; Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Dirve. Comment
  RSA703140  Lactuca serriola Fred M. Roberts, Art Davenport 2003-9-11 6016 Orange Rancho Mission Viejo: Donna O' Neill Land Conservancy. Cristianitos Cyn., 0.79 km N Sycamore Gate 0.23 km w of Crisianitos Road. 126 Comment
  UCR195006  Lactuca serriola A. C. Sanders, Fred M. Roberts 2008-8-7 36001 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  SD80932  Laennecia coulteri James Henrickson 1970-8-22 5297 Orange Bolsa Chica Salt Marsh,dry northern portion, 2.5 miles northnorthwest of Huntington Beach Comment
  UCR232763  Lagophylla ramosissima subsp. ramosissima Robt. L. Allen, Linnell R. Allen, Charles W. Allen 2005-10-9 12529 Orange Peninsular Range; Santa Ana Mtns., Los Pinos Potrero, opposite entrance to Falcon Group Camp 1011 Comment
  CAS-BOT-BC354308  Lagunaria patersonia R. E. Riefner, Jr. 2009-12-3 09 -247 Orange City of San Clemente, N of San Clemente Pier, along main beach trail vicinity of Buena Vista St at West Canada St. 7 Comment
  UC1090437  Lamarckia aurea Milo S. Baker 1958-5-20 13297 Orange Santa Ana Mountains Comment
  IRVC16829  Lasthenia californica Karlin G. Marsh 1979-5-8 Orange Sand Canyon, Irvine Water District; dump area adjacent to wash. San Joaquin Hills Comment
  SEINET7287976  Lasthenia californica C. B. Wolf 1932-3-8 Orange 1/2 Mile north of Corona Del Mar. Bordes of Newport Bay 8 Comment
  RSA695491  Lasthenia coronaria Minor Warne 1934-04 s.n. Orange Laguna Canyon Forks Comment
  RSA796  Lasthenia coronaria J. T. Howell 1928-2-25 850 Orange Nolina Canyon, Rancho Santa Ana. 152 Comment
  UCR209358  Lasthenia coronaria Fred M. Roberts, D. E. Bramlet, Megan Lulow 2008-4-4 6844 Orange Lomas de Santiago, Loma Ridge, at Calochortus Ridge near East Lomas Ridge Road, 0.7 km east of Bee Peak, Irvine Ranch Conservancy 509 Comment
  UCR158155  Lasthenia glabrata Adrian Wolf 1998-5-27 324 Orange South Coast, Newport Slough, south of oil fields, between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 2 Comment
  RSA0035853  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2012-5-5 12 -85 Orange city of San Clement, Antonio Parkway, c. 0.25 mi north of Hwy 74 88 Comment
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Apr 7 2021
  RSA3186  Lasthenia gracilis C. B. Wolf 1932-3-8 2677 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  UCR170139  Lasthenia gracilis Jeffrey Ross, R. Zaka 1998-5-2 39 Orange South Coast, North side of San Joaquin Hills; William R. Mason Regional Park, near intersection of Yale Avenue and University Drive 27 Comment
  SEINET5327270  Lathyrus laetiflorus R. Nelson, Baumann; Kondratieff; Sargent 1988-1-12 5117 Orange San Juan Creek at Lower San Juan Campgroud, Cleveland National Forest. 366 Comment
  SEINET6073121  Lathyrus laetiflorus Unknown 1988-1-12 5117 Orange Cleveland National Forest, San Juan Creek at Lower San Juan Campground. Comment
  RSA699994  Lathyrus strictus Minor Warne 1934-03 s.n. Orange Laguna Canyon 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
  HSC14711  Lathyrus vestitus subsp. alefeldii S. M. Clapp 1966-4-10 27 Orange 3 mi. into Black Star Canyon 152 Comment
  RSA12902  Lathyrus vestitus subsp. alefeldii P. C. Everett 1935-2-10 6292 Orange At base of West Ladd Trick Trail, mouth of Baker Canyon, Santa Ana Mountains 335 Comment
  RSA535966  Lathyrus vestitus subsp. alefeldii Fred M. Roberts, Carol A. Roberts 1989-4-7 4265 Orange Aliso-Wood Canyons Regional Park: Upper Wood Canyon, ca. 0.5 km SW Moulton Peak. 102 Comment
  UCR209357  Lathyrus vestitus subsp. vestitus Fred M. Roberts 2008-4-8 6850 Orange Lomas de Santiago, Loma Ridge, Upper Dripping Springs Cnyn, 1.0 km northeast of Bee Peak, Irvine Ranch Conservancy 458 Comment
  UC484235  Lathyrus vestitus var. alefeldii C. B. Wolf 1931-3-6 Orange 0.5 mi above Trabuco Oaks (w slope of Santa Ana Mts.); Santa Ana Mts., Trabuco Canyon 457 Comment
  CHSC56083  Lathyrus vestitus var. vestitus Mike Cecchini 1978-6-23 1 Orange Ca 1 km northeast of Tucker Wildlife Sanctuary and 0.5 km southeast of Modjeska Reservoir; 10.5 km southeast of Tustim. 457 Comment
  UCR97637  Lathyrus vestitus var. vestitus George K. Helmkamp, E. A. Helmkamp 1997-4-24 1649 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
  SD247645  Lathyrus vestitus var. vestitus R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49688 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  UCR4078  Lavatera assurgentiflora Carole Sims 1965-3-28 s.n. Orange South Coastal Plains, Salt Creek Road off Pacific Coast Highway, between South Laguna and Dana Point 18 Comment
  RSA0013587  Layia platyglossa D. E. Bramlet, Jim Harrison 2008-4-3 4151 Orange South Bee Cyn. Bowerman landfill site, 1.2km south of Bee Cyn access road, & 122n west of the active landfill. Comment
  RSA0054938  Leonotis leonurus R. Engel 1934-10-10 s.n. Orange Santa Ana. Comment
  RSA1076  Lepechinia cardiophylla J. T. Howell 1927-6-26 225 Orange Claymine Canyon, near Sierra Peak 610 Comment
  RSA12900  Lepechinia cardiophylla E. R. Johnson, Percy C. Everett 1935-1-14 s.n. Orange Open firebreak on slopes of Sierra Peak, along road to Claymine Canyon 610 Comment
  UCR27070  Lepechinia cardiophylla T. P. Krantz 1981-6-18 s.n. Orange Santa Ana Mtns, Ridge west of Sierra Peak along the roadside Comment
  CAS-BOT-BC89063  Lepidium didymum Scott D. White 1998-3-24 6227 Orange University of California Irvine Campus. Site of proposed Research Park, southwest of main campus circle. 48 Comment
  RSA697417  Lepidium didymum J. R. Bruff 1927-3-22 2 -P Orange Near Newport. Comment
  RSA697418  Lepidium didymum J. R. Bruff s.n. Orange Fifth St. Bridge. Santa Ana. Comment
  POM21181  Lepidium lasiocarpum Helen D. Geis 1902-3-20 s.n. Orange Bed Santiago Creek. Comment
  JEPS53664  Lepidium lasiocarpum var. lasiocarpum L. M. Booth 1932-5-24 1084 Orange Newport Bay Comment
  UCR247905  Lepidium latifolium Fred M. Roberts 2013-6-12 7789 Orange Peninsular Ranges, SANTA ANA MTNS.: Lower Silverado Canyon along Silverado Creek on north side of Silverado Canyon Road, 0.6 km ENE Silverado School and 1.4 km up stream Black Star Road crossing. 320 Comment
  RSA3180  Lepidium nitidum C. B. Wolf 1932-3-8 2683 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  RSA732067  Lepidium nitidum A. C. Sanders, Fred M. Roberts 2008-3-25 34515 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 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
  UCR193389  Lepidium strictum A. C. Sanders, T. B. Salvato 2008-5-13 35331 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
  LA204448  Lepidium virginicum James Lauter; 1953-4-25 sn Orange U.S. Highway 101, 17 mi. S of Laguna, San Mateo Creek bed Comment
  UC1543086  Lepidium virginicum Donald G. Nelson 1935-4-15 308 Orange between Costa Mesa and Newport Beach Comment
  RSA773551  Lepidium virginicum var. robinsonii Fred M. Roberts 2008-6-5 7033 Orange Loma Ridge, East Fork Rattlesnake Canyon, ca. 2.2 km ENE Rattlesnake Reserovir spillway and 2.3 km WNW Bee Peak 202 Comment
  UCR193015  Lepidium virginicum var. robinsonii A. C. Sanders, Mitch Provance 2008-5-20 35402 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
  POM50054  Lepidospartum squamatum Helen D. Geis 1902-1 576 Orange Santiago Canyon. Comment
  RSA703703  Lepidospartum squamatum Fred M. Roberts, David E. Bramlet 2004-7-30 6089 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy Cristianitos Canyon, along Cristianitos Ck., 0.93 km SSW Gato Gate and 0.23 km W Cristianitos Road. 76 Comment
  SD263572  Lepidospartum squamatum Jim Riley 2013-10-15 123 Orange San Clemente area; 0.56 miles ESE intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 68 Comment
  RSA789590  Leptochloa fusca subsp. fascicularis R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49632 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  SEINET6969968  Leptodactylon californicum W. P. Vestal, A. G. Vestal 1955-3-24 3461 Orange Trabuco Canyon, about 5 miles east of El Toro. Comment
  UC1377645  Leptodactylon californicum subsp. glandulosum John Ingram 1960-3-29 270 Orange 1 mi below O'Neill Park (Trabuco Canyon); , below O'Neill Park Comment
  RSA0030890  Leptodactylon californicum subsp. leptotrichomum B. D. Stark 1931-3-12 s.n. Orange West slope of Santa Ana Mts., 3 mi. no. of Modjeska's Home. 304 Comment
  RSA12929  Leptosiphon androsaceus C. B. Wolf 1935-4-7 6319 Orange Mouth of San Juan Hot Springs Canon, at san juan Hot Springs 213 Comment
  POM13830  Leptosiphon androsaceus P. A. Munz 1922-4-29 5035 Orange Leach Canyon, Santa Ana Mts. 610 Comment
  UCSB47633  Leptosiphon floribundus subsp. glaber Roberts, Fred 1980-5-3 Orange Main Divide Truck Trail, 0.6 km. southeast Trabuco Peak on east side of road, Santa Ana Mtns. 1259 Comment
  RSA602109  Leptosiphon parviflorus Scott D. White 1997-5-6 5036 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
  RSA764445  Leptosiphon parviflorus Doris Bowers 1971-4-19 1698 Orange Black Star Canyon Indian Site 762 Comment
  UCR240081  Leptosiphon parviflorus Dick Newell, Don Millar 2012-5-22 258 Orange Peninsular Range; Santa Ana Mtns., on Lake View Rd. above Irvine Lake at State Spur Rd. 564 Comment
  RSA0011212  Leptosiphon parviflorus Eileen McCollum 1932-4-3 s.n. Orange Near Mojeska's, Santa Ana Mts Comment
  POM361808  Lessingia glandulifera var. glandulifera George R. Johnstone 1928-9-3 s.n. Orange Keen Camp, San Jacinto Mts. 1341 Comment
  RSA51  Leymus condensatus E. R. Johnson 1927-6-10 77 Orange Rancho Santa Ana. Alt 500 ft. 152 Comment
  UCSB52930  Leymus triticoides Roberts, Fred 1983-5-19 Orange Laguna Beach; Laguna Canyon along Laguna Canyon Rd., 1.5 km N jct. El Toro and Laguna Canyon Rds.; 4.9km ESE Signal Peak 100 Comment
  UCR69634  Lilium humboldtii subsp. ocellatum John Wear 1991-7-11 s.n. Orange Santa Ana Mountains, Upper Fremont Canyon, tributary of Santiago Canyon, Irvine Ranch Comment
  RSA0061170  Lilium humboldtii subsp. ocellatum Robt. Allen 2006-7-9 s.n. Orange Santa Ana Mountains region: Trabuco Canyon, just below Alder Spring. Slightly north of first stream crossing southwest of Holy Jim Fire Department. Comment
  RSA357146  Limonium californicum var. mexicanum Robert F. Thorne 1975-4-6 45583 Orange Head of Newport Bay. Comment
  RSA0045186  Limonium commune var. californicum Keith E. Hoffmaster 1934-10-7 237 Orange Near Santa Ana. Comment
  POM311754  Limonium perezii Karen Hosterman 1956-4-7 500 Orange Laguna Beach city, on a cliff overlooking Crescent Bay. Santa Ana Mtn range, Pacific Ocean drainage. 2 Comment
  IRVC29782  Limonium sinuatum Mark A. Elvin, Dean Kelch 2006-12-9 5294 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
  RSA469962  Linanthus aureus Shaw 1923-03 s.n. Orange Near Irvine Comment
  POM6475  Linanthus californicus P. A. Munz, L. T. Street, G. Williams 1919-5-3 2629 Orange Santa Ana River Canyon. 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
  SD41252  Linanthus californicus Darley F. Howe 1946-6-3 Orange Santa Ana Mountains Comment
  SD42979  Linanthus californicus E. B. Harbison Mar 1948 Orange San Juan Camp. Comment
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Sep 30 2013
  LA103892  Linanthus californicus E. B. Higgins; 1948-3-21 sn Orange San Juan Camp Comment
  RSA618  Linanthus californicus subsp. glandulosus J. T. Howell 1927-6-26 229 Orange Claymine Canyon, near Sierra Peak. 457 Comment
  SEINET12279065  Linanthus demissus J. F. Bright, Wyman, C. 1933-1 8200 Orange in valley near Del Toro Comment
  JEPS58363  Linanthus dianthiflorus Alice King Mar 1908 Orange Anaheim Comment
  UC1618056  Linanthus floribundus Donald G. Nelson 1935-7-6 203 Orange San Juan Canyon Comment
  JEPS33699  Linanthus liniflorus John Thomas Howell 1927-6-8 2458 Orange Santa Ana Canyon 182 Comment
  SEINET7067522  Linanthus liniflorus A. G. Vestal 1947-6-12 s.n. Orange Canyon Road to Trabuco Canyon. Coordinate datum: NAD27. UTM Zone 11, 444428mE, 3723792mN. Comment
  UCR177690  Linanthus liniflorus Fred M. Roberts, D. E. Bramlet 2003-5-1 5693 Orange Coastal Plains & Basins; South Coastal Plain region, Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.56 km SSW Gato Gate and 0.21 km west of Cristianitos Rd. 96 Comment
  UCR37803  Linanthus liniflorus 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
  RSA0054843  Linaria canadensis Keith E. Hoffmaster 1927-4-2 304 a,b,c,d Orange Santa Ana Mts. San Onofre. Comment
  RSA718  Linaria canadensis var. texana J. T. Howell 1928-2-25 835 Orange Near Bee Canyon, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC432276  Lithophragma affine D. E. Breedlove 1962-3-9 1790 Orange 14.3 miles E of San Juan Capistrano on State 74 335 Comment
  RSA599176  Lithophragma affine subsp. affine Scott D. White 1997-3-28 4830 Orange Above Modjeska Canyon, proposed water tank site 425 Comment
  RSA704892  Lobularia maritima Doug Causey 1972-5-1 s.n. Orange 3 mi. E Irvine Lake Comment
  UCR97884  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 1997-4-24 1648 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
  RSA0051390  Lolium perenne subsp. multiflorum Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49665 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. Comment
  RSA699306  Lolium perenne subsp. multiflorum Keith E. Hoffmaster 1927-5-26 107 Orange Santa Ana Comment
  RSA0011621  Lolium rigidum Rankin s.n. Orange Costa Mesa. Comment
  JEPS69291  Lolium temulentum Lawrence M. Booth 1932-5-19 1078 Orange Newport Bay Comment
  RSA529  Lomatium lucidum J. T. Howell 1927-6-26 221 Orange Claymine Canyon near Sierra Peak 366 Comment
  RSA716657  Lonicera japonica Fred M. Roberts 2005-5-13 6185 Orange San Juan Capistrano; Ortega Ranch Business Center site, between Rancho Viejo Rd. and I-5 freeway adjacent to Horno Creek; 0.6km NE Mission San Juan Capistrano. 54 Comment
  UC864942  Lotus I. W. Clokey 1932-3-1 5329 Orange Laguna Beach Comment
  UC1543240  Lotus hamatus Donald G. Nelson 1935-4-14 286 Orange facing Newport Bay and the ocean (along main coast highway); Newport Beach Comment
  UC1719510  Lotus hamatus D. Atwood 1993-3-27 17693 Orange Corona del Mar State Park along Newport Coast Drive 0 Comment
  RSA16339  Lotus heermannii P. C. Everett 1935-6-18 7195 Orange Santa Ana Mts., Main Divide Motorway to Santiago Pk., 1 mi. from Ortega Highway. 732 Comment
  RSA788967  Lotus heermannii Robert F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49578 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  UC1543225  Lotus heermannii Donald G. Nelson 1935-4-6 256 Orange San Juan Capistrano, below main highway, about 4 mi from summit San Juan Canyon 60 Comment
  RSA0011213  Lotus heermannii Eileen McCollum 1932-4-23 s.n. Orange Hill near Robbers Peak. Comment
  RSA748261  Lotus purshianus A. C. Sanders, Mitch Provance 2008-5-20 35394 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
  RSA751257  Lotus salsuginosus A. C. Sanders, Fred M. Roberts 2008-7-16 35882 Orange Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 358 Comment
  IRVC19937  Lotus salsuginosus subsp. salsuginosus Gordon A. Marsh, K. G. Marsh 1983-3-2 Orange burn area on ridge between Coal and Gypsum Canyons, Santa Ana Mountains Comment
  HSC1875  Lotus scoparius J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  RSA393  Lotus scoparius J. T. Howell 1927-6-1 4 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  RSA498846  Lotus scoparius E. S. Spalding 1923-12-1 20335 Orange San Juan Capistrano, sea shore. 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
  RSA303527  Lotus scoparius Jim Shevock 1970-12-20 568 Orange Newport Back Bay. 11 Comment
  IRVC2251  Lotus scoparius subsp. scoparius C. Hinesly 1965-1-30 Orange [Newport] Back Bay. Newport Beach Comment
  JEPS55878  Lotus strigosus Alice King Mar 1908 Orange Anaheim plains Anaheim 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
  RSA588706  Lotus strigosus Fred M. Roberts, Carol A. Roberts 1990-5-23 4644 Orange Santa Ana Mtns: West Fork, Upper Long Canyon, near Main Divide Truck Trail, 4.5 km SE Los Pinos Peak. 756 Comment
  IRVC22013  Lotus strigosus var. strigosus Fred M. Roberts, Gordon Marsh 1985-3-12 1507 Orange mesa west of Ave. Pico and north of El Camino Real, 3.2km SSE Coyote Bluff; 0.6km E Bench Mark 16 (sect. 32), San Clemente 37 Comment
  RSA542578  Lotus strigosus var. strigosus Fred M. Roberts 1988-3-15 3846 Orange Rancho Mission Viejo: Verdugo Canyon, 2.6 km ENE Point Rancho Survey Mark 149 Comment
  IRVC18811  Lotus strigosus var. strigosus Karlin G. Marsh 1983-4-11 s.n. Orange Laguna Beach: Sycamore Hills; dirt road surface of central ridge line. southern coastal Comment
  RSA697981  Lotus subpinnatus Unspecified s.n. Orange Orange County park Comment
  RSA406363  Lotus wrangelianus M. B. Dunkle 1933-3-5 3086 Orange San Juan Canyon 304 Comment
  UCR207792  Ludwigia hexapetala O. F. Clarke 2004-6-23 s.n. Orange South Coast, Newport Back Bay, just south of the Muth Interpretive Center 15 Comment
  RSA603350  Ludwigia peploides subsp. peploides Scott D. White, Sandy Leatherman 1997-6-12 5343 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
  CAS-BOT-BC196229  Lupinus albifrons var. eminens Marcus E. Jones 1926-4-28 s.n. Orange Gaviota Canon [Canyon] Comment
  IRVC2284  Lupinus bicolor subsp. umbellatus unknown 1965-4-13 HS 0423 Orange Laguna Canyon Southern Coastal Comment
  IRVC2285  Lupinus bicolor subsp. umbellatus D. Van Gorden 1965-5-9 HS 0422 Orange Silverado Canyon. Santa Ana Mountains; Comment
  RSA543961  Lupinus concinnus subsp. concinnus Steve D. Boyd 1991-5-9 6192 Orange Crest of range at Oak Flat, SE of Sierra Peak, just West of Riverside County Line. 793 Comment
  IRVC15179  Lupinus concinnus subsp. concinnus K. Conrey 1975-4-20 s.n. Orange Skyline Ranch Southern Coastal Comment
  OBI5825  Lupinus excubitus Carl B. Wolf 1931-5-20 2056 Orange Along Santa Fe RR 1 mi W of Esperanza, Santa Ana Cyn 107 Comment
  RSA788819  Lupinus excubitus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49802 Orange Santa Ana Mountains: Trabuco Canyon Comment
  UC527213  Lupinus excubitus C. B. Wolf 1931-5-20 2056 Orange along Santa Fe R.R. 1 mi w Esperanza (Santa Ana Canyon); Santa Ana Canyon 106 Comment
  UCR46561  Lupinus excubitus B. G. Pitzer, D. C. Hawks 1986-10-21 342 Orange Peninsular Ranges; Santa Ana Mountains, Lomas de Santiago, c. 10 mi east of Santa Ana along Jeffrey Rd. in Hicks Canyon, c. 1.0 mi north of South Coast Gun Club 183 Comment
  CAS-BOT-BC215311  Lupinus excubitus var. excubitus E. R. Johnson 1929-5-1 s.n. Orange RR embankment at W end of Santa Ana Canon [Canyon], E of Atwood 91 Comment
  POM8747  Lupinus excubitus var. hallii Philip A. Munz, R. D. Harwood 3727 Orange Santa Ana Mountains, Silverado Canyon 549 Comment
  RSA503878  Lupinus excubitus var. hallii N. C. Cooper 1949-5-1 3942 Orange San Juan Canyon 610 Comment
  RSA413701  Lupinus hirsutissimus M. B. Dunkle 1933-3-5 3081 Orange San Juan Canyon. Comment
  CDA27444  Lupinus hirsutissimus Robert L. Pope, R. G. Ahlefeld 1957-4-1 Orange Irvine ranch. 0 Comment
  IRVC20486  Lupinus longifolius Fred M. Roberts, Karlin G. Marsh 1983-5-13 1046 Orange San Joaquin Hills: Laguna Canyon, Laguna Canyon Rd., 1.7km N Thurston Sch.; 6.4km SER Signal Peak. Southern Coastal 50 Comment
  POM2426  Lupinus longifolius D. L. Crawford 1916-5-10 735 Orange Laguna Mts. Comment
  UCR191351  Lupinus sparsiflorus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34638 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 330 Comment
  RSA113262  Lupinus sparsiflorus subsp. sparsiflorus E. K. Balls 1955-4-4 20426 Orange San Juan Creek along Hwy 74, San Juan Capistrano to Elsinore. 46 Comment
  RSA86962  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1923-3-18 s.n. Orange Cypress Canyon, Santa Ana Mts. 122 Comment
  IRVC2342  Lupinus succulentus 1965-4-18 HS 0416 Orange Trabuco Canyon. Santa Ana Mountains Comment
  RSA4839  Lupinus succulentus James Snow 1932-1 s.n. Orange Bryant Ranch, near Long Beach. Comment
  UCR250869  Lupinus succulentus Dick Newell, Don Millar 2014-4-15 364 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon wash 100 yards south of Box Canyon Road 396 Comment
  RSA722342  Lupinus succulentus R. H. McArthur 1934-2-17 s.n. Orange Santa Ana Canyon. Comment
  IRVC2358  Lupinus truncatus B. Newman 1965-3-28 s.n. Orange Trabuco Canyon. Santa Ana Mountains Comment
  IRVC15186  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
  UCR130356  Lycium A. C. Sanders, Mark A. Elvin 2003-10-12 27313 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  OBI33516  Lysimachia arvensis Nancy J. Moriarty 1973-5-27 730527 -3 Orange San Clemente State Beach 1 mi S of the end of Ave Califia in the sand below the bluffs Comment
  UC536934  Lythrum californicum Lawrence M. Booth 1932-6-4 1147 Orange Newport Lagoon Comment
  UCR107221  Lythrum californicum Scott D. White 1998-5-31 6570 Orange University of California, Irvine campus, SW of Farm School site (now proposed as Student Recreation Center). 37 Comment
  RSA0036648  Madia elegans subsp. elegans Robt. Allen, Chris Boever 2009-5-23 s.n. Orange Peninsular Ranges; Santa Ana Mountains region: Audubon Starr Ranch, west slope of Pruesker Peak, 431 air meters (0.27 air miles) northwest of View Rancho Survey Mark. 462 Comment
  RSA708724  Madia gracilis Fred M. Roberts, Robert L. Allen, Chris M. Barnhill, Nancy Hatfield 2005-5-30 6224 Orange west slope of Modjeska Peak, Harding Canyon watershed, Main Divide Road, 0.46km W summit. 1670 Comment
  RSA7394  Malacothamnus densiflorus var. densiflorus Carl B. Wolf 1933-8-24 5385 Orange along road south of Bedford Peak on main divide. 1098 Comment
  CAS-BOT-BC206255  Malacothamnus fasciculatus Cecil Hart 1928-5-27 s.n. Orange Laguna Beach Comment
  RSA708288  Malacothamnus fasciculatus Scott D. White, Jennifer H. Jones 2005-3-31 10861 Orange South Coast: City of Laguna Beach. 549 Nyes Place. Proposed home site on ca. 0.5 acre. 91 Comment
  RSA0039647  Malacothamnus fasciculatus T. Sargent 1959-5-17 s.n. Orange South slope of ridge on south side of Santa Ana Canyon, opposite Orange turn-off. Comment
  UCR130492  Malacothrix saxatilis var. saxatilis R. E. Riefner Jr. 1999-5-22 99- 289 Orange South Coast, city of Dana Point, west of Pacific Coast Hwy, vicinity of Salt Creek Park and Ritz Carlton Hotel 15 Comment
  JEPS112967  Malacothrix saxatilis var. tenuifolia Dean W. Taylor 1994-6-7 14410 Orange Newport Bay; along Backbay Drive at the junction with San Joaquin Hills Drive 6 Comment
  LA62901  Malosma laurina W. E. Pequegnat; 1937-9-6 sn Orange Santa Ana Mountains, Ortega Rd Comment
  RSA0051388  Malosma laurina Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49609 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  UCD116410  Malva assurgentiflora F. C. Boutin 1967-4-23 1623 Orange Santa Clemente Island: at N end of island SW of airstrip runway ca. 25 mi. from coast. Comment
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Nov 27 2013
  UCR199729  Malva nicaeensis Scott D. White, Justin Wood 2008-4-22 11907 Orange Chino Hills, Telegraph Canyon Road, E of Carbon Canyon Regional Park 335 Comment
  UC1607989  Malva parviflora Donald G. Nelson 1935-4-14 276 Orange near Pacific Electric Railway Station (Newport Beach); Newport Beach Comment
  RSA471  Malva parviflora J. T. Howell 1928-3-17 870 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA5948  Malva parviflora Carl B. Wolf 1932-7-7 3860 Orange 0.5 mi E of Los Alamitos Blvd and 300 ft S of Bryant ave. (300ft S & 100 ft E of NW corner of SW 1/4 sect 29) 8 Comment
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Apr 9 2014
  RSA678727  Malvaviscus arboreus Fred M. Roberts, Leo Song 2002-8-1 562 Orange San Joaquin Hills: Laguna Beach, South flank Temple hill, between Nyes Place and Balboa Ave.; 0.9 km ENE Sugarloaf pt. 183 Comment
  JEPS68666  Malvella leprosa Lawrence M. Booth 1932-7-21 1296 Orange Anaheim Creek Comment
  POM2951  Malvella leprosa D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon Comment
  POM2953  Malvella leprosa P. A. Munz 1918-5-4 2205 Orange Laguna Lakes, Laguna. Comment
  RSA441224  Marah macrocarpa E. Crow 1929-2-22 161 Orange Santa Ana Mts., Calif Comment
  RSA652419  Marah macrocarpa Harvey Kennedy 1949-2-20 s.n. Orange Newport Beach, back bay. 9 Comment
  JEPS63283  Marrubium vulgare Alice King April, 1908 Orange Santa Ana Comment
  OBI17602  Marrubium vulgare Kurt R. Neisess 1975-12-20 s.n. Orange Fullerton Hills area Comment
  UCR193277  Marrubium vulgare A. C. Sanders, Fred M. Roberts 2008-6-17 35511 Orange Peninsular Range; Santa Ana Mtns., middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  RSA649074  Marrubium vulgare Karl Price 1988-4-29 21 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  RSA657  Marrubium vulgare J. T. Howell 1927-7-22 457 Orange Botany Garden, Rancho Santa Ana [Botanic Garden] 152 Comment
  CAS-BOT-BC536064  Marsilea drummondii R. E. Riefner, Jr. 2008-6-22 08 -209 Orange City of Yorba Linda, Santa Ana Canyon, Santa Ana River, La Palma Ave., near Old Village Road 95 Comment
  RSA0126962  Matricaria discoidea R. E. Riefner 2017-4-10 17 -164 Orange City of San Clemente, San Clemente State Beach, SW area W of Concordia Elementary School. 32 Comment
  SDSU6335  Matricaria discoidea R. M. Beauchamp 1968-2-17 775 Orange 7 miles east of intersection of Interstate #5 on El Toro Road. Comment
  CDA6381  Mazus japonicus G. D. Barbe 1973-7-9 1694 Orange Bordier s Nursery, 7231 Irvine Boulevard, Santa Ana (Tustin). 0 Comment
  IRVC25033  Medicago lupulina Fred M. Roberts 1986-8-26 3085 Orange University of California campus, Alderich Park just north of Engineering Building; Irvine 26 Comment
  RSA184088  Medicago lupulina I. L. Wiggins 1966-4-2 20578 Orange 1249 Luanne Avenue, Fullerton. Comment
  IRVC2374  Medicago polymorpha D. Van Gorden 1965-5-9 s.n. Orange Silverado Canyon. Santa Ana Mountains; Comment
  IRVC2382  Medicago polymorpha Tony Price 1965-4-18 s.n. Orange Coasta Mesa; Santa Isabel St. Southern Coastal Comment
  UCD107890  Medicago polymorpha Ira L. Wiggins 1966-3-4 20492 Orange Shoulder of Peralta Ave. near junction of Newport Freeway and Riverside Highway. Comment
  IRVC2380  Medicago polymorpha A. S. Boughey 1965-3-5 57 Orange Trabuco Canyon. Santa Ana Mountains Comment
  RSA184191  Medicago polymorpha I. L. Wiggins 1966-3-16 20524 Orange 1 mile above Rangers house Firestone Boy Scouts Reservation. Comment
  RSA746482  Medicago rigidula R. E. Riefner Jr. 2008-5-19 08 -99 Orange City of San Juan Capistrano, 0.2 mi E of Antonio Pkwy on Hwy 74 (Ortega Hwy) 88 Comment
  RSA746476  Medicago truncatula R. E. Riefner Jr. 2007-4-12 07 -178 Orange City of Orange, SW portion of Irvine Regional Park; Irvine Park Rd. 188 Comment
  RSA746480  Medicago truncatula R. E. Riefner Jr. 2007-4-1 07 -168 Orange City of Laguna Niguel, Laguna Niguel Regional Park, general vicinity of La Paz Rd. at Aliso Creek. 63 Comment
  SD241101  Melaleuca nesophila R. E. Riefner Jr. 2011-7-1 11 82 Orange City of Newpoprt Beach, beach area west of the end of Cameo Shores Road; south Ca. 1 mile from Poppy Avenue. 2 Comment
  CAS-BOT-BC414241  Melaleuca viminalis R. E. Riefner, Jr. 2014-7-13 14 -242 Orange City of Seal Beach, N side of Westminster Blvd., ca. 0.2 mi W of Road B 5 Comment
  POM202497  Melica imperfecta L. M. Booth 1932-5-12 1032 Orange Newport Bay. Comment
  RSA542365  Melica imperfecta Fred M. Roberts 1988-4-8 3896 Orange Lomas de Santiago: Loma Ridge, Central Linestone Canyon, 4.1 kilometers NNW Bolero Lookout. 323 Comment
  RSA703723  Melica imperfecta D. E. Bramlet, Fred M. Roberts 2003-3-13 3334 Orange Donna O'Neill Reserve. North East ridge of the reserve, 915m W of Cristianitos Rd. & 1.2km N of the E-W access road., (11S, 04 46 770E, 37 06 080N) 195 Comment
  SBBG119063  Melica imperfecta D. E. Bramlet, F. Roberts 2003-3-13 3334 Orange Donna O'Neill Reserve, NE ridge of reserve, ca. 915 m W of Cristianitos Rd and 1.2 km N of the E-W access rd (San Clemente: T8S R7W S12, NE of the NE 195 Comment
  UC1146059  Melica imperfecta C. L. Hitchcock and C. V. Muhlick 1964-3-17 23071 Orange 8 mi e Yorba Linda; Santa Ana Canyon Comment
  UC1543021  Melica imperfecta Donald G. Nelson 1935-4-6 213 Orange e of San Juan Capistrano (just s of boundary of Cleveland National Forest, up San Juan Canyon, small branching n-ward from summer ranger station on the main highway); San Juan Canyon Comment
  UCR207526  Melica imperfecta O. F. Clarke 2006-5-6 s.n. Orange Peninsular Range; Santa Ana Mtns., Coal Canyon 305 Comment
  IRVC2396  Melilotus albus Pat Rolfe 1965-4-24 s.n. Orange Ortega Highway. Santa Ana Mountains Comment
  SEINET12169950  Melilotus albus S. A. Thompson, Rawlins, J. E. 1988-8-27 5261 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  IRVC22485  Melilotus indicus Fred M. Roberts 1985-4-24 1651 Orange Laguna Beach: Laguna Canyon along Laguna Canyon Rd., 0.8km N jct. El Toro Rd. Southern Coastal 78 Comment
  IRVC2407  Melilotus indicus D. Ibbetson 1965-4-12 s.n. Orange Newport Beach Southern Coastal Comment
  IRVC2424  Melilotus indicus Ed Hazen 1965-4-27 s.n. Orange Costa Mesa; Victoria St. and Victoria Place. Southern Coastal Comment
  RSA732167  Melilotus indicus A. C. Sanders, Fred M. Roberts 2008-3-25 34536 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills. 259 Comment
  RSA735029  Melilotus indicus Scott D. White, Justin M. Wood 2008-4-10 11849 Orange Chino Hills: Powerline access road just N of CHSP boundary and just W of Orange/SB co. line. Approx. 1 mi. NW of Gilman Peak. 366 Comment
  CLARK-A1528-981  Melilotus indicus Patricia A. Andrews 1975-6-26 5919 Orange Capistrano Bay Beach 9 Comment
  SEINET3828309  Melinis repens R. E. Riefner Jr. 2011-1 11 -98 Orange Fuel modification areas. Newport Beach, Orange County Parks & Recreation lands, along Newport Coast Drive, between Vista Ridge& Alteza Rd. 281 Comment
  RSA708735  Mentha aquatica Fred M. Roberts, Robert L. Allen, Chris Barnhill 2004-8-21 6120 Orange Caspers Wilderness Park, Hot Springs Creek in San Juan Cyn., c.a. 0.36km SSW San Juan Ranger Station, at SR 74 crossing. 197 Comment
  RSA0031757  Mentha citrata Robert F. Thorne 1977-11-21 50817 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs. 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
  UCR224406  Mentzelia micrantha Robt. L. Allen, Genevieve Walden 2008-6-26 s.n. Orange Santa Ana Mountains, along access road to Modjeska Peak, outside the sharp bend in the extreme north end of the road. Survey Point #47 1514 Comment
  RSA5811  Mesembryanthemum crystallinum C. B. Wolf 1932-6-28 3771 Orange Along western half of no. boundary of 40 acre Valencia Orange grove at Bryant Ave. and Hansen Road. 9 Comment
  UCR3313  Mesembryanthemum crystallinum Cary Brown 1964-3-28 28364- 01 Orange South Coast, Hwy 101 alternate, 1 mile north of San Clemente 6 Comment
  CAS-BOT-BC435275  Mesembryanthemum nodiflorum Carl B. Wolf 1927-7-23 662 Orange Juste no. of San Clemente Comment
  IRVC17949  Mesembryanthemum nodiflorum A. B. McGee 1980-6-12 Orange San Joaquin Freshwater Marsh, south side; center of road. Irvine Comment
  RSA18534  Mesembryanthemum nodiflorum C. B. Wolf 1927-7-23 663 Orange Along the coast just north of San Clemente. Comment
  RSA18535  Mesembryanthemum nodiflorum C. B. Wolf 1927-7-23 662 Orange Along the coast just north of San Clemente. Comment
  UCR104615  Microseris douglasii subsp. platycarpha D. E. Bramlet 1995-4-29 2403 Orange Fairview Park, Costa Mesa. 366m north of intersection of Wilson and Canyon drive and 152 m west of the Canyon School 43 Comment
  RSA651499  Microseris douglasii subsp. platycarpha D. E. Bramlet 2000-4-17 2983 Orange West of Blind Cyn. and North of Irvine Park. The site is 2 km west of Blind Canyon and 305m north of Irvine Park. This locality is 183m southwest of the MWD access road 220 Comment
  RSA749643  Microseris heterocarpa D. E. Bramlet, Fred M. Roberts 2008-4-4 4174 Orange Ridgeline above Limestone Cyn (East Loma Ridge), 1.57km west of Limestone Cyn. & 795m E of Round Cyn. 533 Comment
  UCR222413  Microseris heterocarpa D. E. Bramlet, Fred M. Roberts 2008-4-4 4174 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, East Loma Ridge above Limestone Canyon, 1.57 km west of Limestone Cyn. and 795 m east of Round Canyon 533 Comment
  RSA606307  Microsteris gracilis subsp. gracilis Jon E. Keeley 1994-4-5 25264 Orange First year burn, east end of Caspers Park S-7 (Keeley 1994). 215 Comment
  UC171021  Mimulus H. M. Hall 1913-5-28 9404 Orange Santiago Canyon Comment
  UC943889  Mimulus H. E. McMinn, M. Van Rensselaer 1945-6-9 1910 CD Orange ca. 5 mi e Laguna Beach (on Laguna Canyon Highway) Comment
  RSA598961  Mimulus aurantiacus Scott D. White 1997-3-28 4833 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  UCR191245  Mimulus aurantiacus A. C. Sanders 2008-4-29 35134 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
  SEINET12269785  Mimulus aurantiacus Unknown 1933-1 8205 Orange back of La Guna Beach Comment
  JEPS87320  Mimulus aurantiacus var. pubescens David M. Thompson 1992-5-16 1066 a Orange 2.4 mi n and w Hwy 74 (along USFS Road 3S04 )n side of paved loop allowing access to Main Divide Road)); Santa Ana Mts. 950 Comment
  POM311167  Mimulus aurantiacus var. pubescens H. E. McMinn, M. Van Rensselaer 1945-6-9 1909 -H&I Orange North slope Laguna Canyon ca. 4 mi. east of Laguna Beach. Comment
  POM311168  Mimulus aurantiacus var. pubescens H. E. McMinn, M. Van Rensselaer 1945-6-9 1909 -ABC Orange North slope Laguna Canyon ca. 4 mi. east of Laguna Beach. Comment
  RSA588893  Mimulus aurantiacus var. puniceus Fred M. Roberts, Carol A. Roberts 1990-5-31 4661 Orange Costa Mesa; Fairview Park, Just west of end of Canyon Drive, 0.1 km W Canyon School. 24 Comment
  UC1281141  Mimulus aurantiacus var. puniceus H. E. McMinn 1949-6-9 5617 Orange about 3 mi e San Juan Capistrano (on Highway 74) Comment
  RSA749308  Mimulus brevipes Fred M. Roberts, Linda Farley 2008-3-28 7130 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
  RSA21062  Mimulus cardinalis Ramon Valverde 1938-8-4 9442 Orange Rancho Santa Ana, Santa Ana Canyon. 122 Comment
  RSA550817  Mimulus clevelandii David M. Thompson 1992-5-16 1065 Orange Santa Ana Mts. 3.9 mi N and W of Hwy 74 along USFS Road 3S04 (the N Divide Road). 1006 Comment
  RSA727  Mimulus floribundus Thomas Howell 1927-7-27 492 Orange Santa Ana River bottom. Comment
  RSA701948  Mimulus guttatus Fred M. Roberts, David Bramlet 2003-6-6 5901 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 7 2014
  RSA0045513  Mimulus guttatus Keith E. Hoffmaster 1935-4-14 928 Orange Trabuco creek, 1/4 mi. above CCC camp at Trabuco Oaks, Santa Ana Mts. PR 8. Comment
  UCSB59358  Minuartia douglasii Roberts, Fred 1987-5-9 Orange Santa Ana Mtns.: San Juan Trail; above Chiquito Basin; 2.3 km. SSE Los Pinos Peak; UTM 372290mN, 457250mE 952 Comment
  RSA698204  Mirabilis laevis Minor Warne 1934-03 s.n. Orange Laguna Canyon Forks Comment
  UC1287146  Mirabilis laevis var. crassifolia C. L. Hitchcock 1966-3-15 24143 Orange Stearns Lease, 1.5 miles E of Brea Comment
  CSUSB1384  Modiola caroliniana John N. Bullock 1970-4-3 Orange Found as weed in residential district, Boxwood Street, Anaheim (city). 45 Comment
  RSA38698  Modiola caroliniana E. L. Paddock 1943-9-10 s.n. Orange 1.5 miles NE of Brea Comment
  CAS-BOT-BC435043  Mollugo verticillata L. R. Abrams 1901-6-1 1769 Orange Laguna Comment
  RSA0028031  Mollugo verticillata Fred M. Roberts, Laura Cohen 2012-10-31 7717 Orange San Joaquin Hills: Laguna Lake 1 (Upper Laguna Lake), north end. Laguna Coast Wilderness Park, ca. 5.1 kilometers ENE Signal Hill. 113 Comment
  IRVC28229  Monardella hypoleuca A. C. Sanders, Mark A. Elvin 2005-9-2 31607 Orange Upper Holy Jim Canyon, a major tributary of Trabuco Cyn, along the trail in switchbacks. Peninsular Ranges, Santa Ana Mtns 820 Comment
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Aug 13 2012
  RSA0005454  Monardella hypoleuca P. A. Munz 1923-9-7 7742 Orange Trail Trabuco Canyon to Santago Peak 915 Comment
  IRVC22034  Monardella hypoleuca subsp. hypoleuca Fred M. Roberts 1983-9-26 1128 Orange Lion Canyon, Chiquito Basin Trail, 3.5km NNE Lower San Juan Picnic Ground; 4.2km SSE Los Pinos Peak, Santa Ana Mountains 815 Comment
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Sep 18 2012
  SBBG127388  Monardella hypoleuca subsp. intermedia A. C. Sanders with F. M. Roberts 2008-7-3 35683 Orange Weir Cyn, off Windy Ridge Rd below saddle on ridge above the Eastern Transportation Corridor; Santa Ana Mtns 365 Comment
  SD237500  Monardella hypoleuca subsp. intermedia A. C. Sanders, Mark A. Elvin 2005-9-2 34615 Orange Santa Ana Mountains: upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks (Santiago Peak 7.5'Q) 975 Comment
  SD239801  Monardella hypoleuca subsp. intermedia A. C. Sanders, Mark A. Elvin 2005-9-2 31613 Orange Santa Ana Mountains: near head of Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks, below the towers on Santiago Peak (Santiago Peak 7.5'Q) 997 Comment
  UCR158815  Monardella hypoleuca subsp. intermedia A. C. Sanders, Mark A. Elvin 2005-9-2 31615 Orange Santa Ana Mtns., upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks 976 Comment
  UCR193800  Monardella hypoleuca subsp. intermedia A. C. Sanders, Fred M. Roberts 2008-7-3 35681 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 Comment
  UCR193836  Monardella hypoleuca subsp. intermedia A. C. Sanders, Fred M. Roberts 2008-7-16 35845 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin 391 Comment
  RSA539388  Monardella lanceolata var. lanceolata Fred M. Roberts, Carol A. Roberts 1988-6-10 4092 Orange Santa Ana Mountains: Main Divide Truck trail, Modjeska Peak, west slope, 1.1 km SW summit. 1524 Comment
  RSA401585A  Monardella lanceolata var. lanceolata Claire Kibbe 1936-07 s.n. Orange Santa Ana Canyon. 762 Comment
  LA205754  Monardella macrantha subsp. hallii W. Pequegnat; 1938-6-15 sn Orange Santa Ana Mountains, Bear Springs Comment
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Jan 29 2015
  RSA16484  Monardella macrantha subsp. hallii Percy C. Everett 1935-6-19 s.n. Orange Main Divide Motorway 1.5 miles below summit of Santiago Peak, E slope. 1311 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
  IRVC26422  Moraea bipartita Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3157 Orange UCI Arboretum Southern Coastal 15 Comment
  CAS-BOT-BC275292  Muhlenbergia microsperma Helen D. Geis 1902-1-1 556 Orange Unspecified Comment
  RSA598923  Muhlenbergia microsperma Scott D. White 1997-3-28 4853 Orange Above Modjeska Canyon, proposed water tank site 425 Comment
  SEINET3129566  Muhlenbergia microsperma L. R. Abrams 1903-4-18 3260 Orange Trabuco arroyo near Capistrano Comment
  UCR2585  Muhlenbergia microsperma F. M. Reed 1922-4-30 4721 Orange Arch Beach 229 Comment
  RSA0028023  Muhlenbergia rigens Fred M. Roberts 2012-9-6 7696 Orange San Joaquin Hills: Buck Gully, Buck Gully Trail, west end near Poppy Street entrance, 2.1 kilometers WNW Pelican Hill summit. 37 Comment
  UCR237840  Myoporum laetum Mark A. Elvin 2003-2-2 2269 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  RSA0010807  Myoporum laetum James Henrickson 1970-9-5 5347 Orange 2 mi NW of Huntington Beach in southern open portion of Bolsa Chica Salt Marsh 0 Comment
  OBI1297  Myriopteris newberryi Ilk 1963-9-17 1095 Orange Laguna Canyon, Laguna Canyon, rock outcrops north of road, ca. 1/2 mile north of El Toro Rd. turnoff; 500 Comment
  UCR247878  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
  RSA184087  Nassella lepida I. L. Wiggins 1966-3-2 20487 Orange Roadside, carbon Canyon 1.5 miles above the dam, Orange County Comment
  RSA3181  Nassella lepida C. B. Wolf 1932-3-8 2682 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  RSA548852  Nassella lepida Fred M. Roberts, H. Camp 1987-3-10 3218 Orange Caspers regional park: San Juan Canyon, BN of Hwy 74, 1.9km SW San Juan Hot Springs, UTM 3715600mN, 450 400m E, alt 229m. 229 Comment
  RSA638967  Nassella lepida Valerie L. Soza, LeRoy Gross 1999-6-8 500 Orange Santa Ana Mountains: Santiago and Modjeska Canyons, above Tucker Wildlife Sanctuary, above the town of Modjeska 518 Comment
  RSA3413  Nassella pulchra Le Roy Abrams 1903-4-18 3269 Orange Trabuco arroyo, near San Juan Capistrano. Comment
  RSA681946  Nassella pulchra Fred M. Roberts, David E. Bramlet 2003-3-13 5572 Orange Donna O'Neill Land Conservancy: Ridge west of Christianitos Canyon, 1.6 km NW Sycamore Gate., (33 deg 29' 41N, 117 deg 34' 20W; [UTM 11S-04 46 773mE, 37 06 077mN 197 Comment
  RSA682762  Nassella pulchra Scott D. White, Amanda Duchardt 2003-3-27 8864 Orange Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  RSA732051  Nassella pulchra A. C. Sanders, Fred M. Roberts 2008-4-8 34741 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  UC1155964  Nassella pulchra C. L. Hitchcock 1966-3-15 24142 Orange hills 1 1/2 mi e Brea; Stearns Lease Comment
  UC407317  Nassella pulchra LeRoy Abrams 1903-4-18 3269 Orange Trabuco Canyon Capistrano Comment
  RSA703388  Nasturtium officinale R. E. Riefner Jr. 2003-11-30 3 -483 Orange Peters Canyon Channel at Alton St., E of Jamboree Rd. near Irvine City Hall. 22 Comment
  RSA759149  Navarretia atractyloides Robt. Allen, D. Taylor 2008-7-19 s.n. Orange Along North Main Divide Road, 0.2 road miles S of junction with Bedford Rd, 3.5 road miles N of junction with Maple Springs Road, 0.84 air miles WNW of Bald Peak. Labeled on USGS Topo map as Water Tank, near BM 3702. 1142 Comment
  RSA113269  Nemacaulis denudata var. denudata E. K. Balls 1955-4-4 20419 Orange Coastal Strand, mouth of Santa Ana River, W bank, Hwy 101 Comment
  UCR190983  Nemacladus ramosissimus A. C. Sanders, Fred M. Roberts 2008-4-22 34999 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
  RSA699660  Nemophila menziesii var. integrifolia Keith E. Hoffmaster 1932-4-3 s.n. Orange Santa Ana Mountains Comment
  RSA0060642  Nephrolepis cordifolia Richard E. Riefner 2011-8-25 11 -120 Orange City of Laguna Beach, Aliso Beach County Park, bluff ca. 0.15 mi. SE of Aliso Way, NW ca. 0.25 mi. of West St. 10 Comment
  RSA0060643  Nephrolepis cordifolia Richard E. Riefner 2014-2-24 14 -64 Orange City of Dana Point, W ca. 0.1 mi from Island Way, Dana Point Harbor Dr., cliff slope immediately S of Santa Clara Ave. and Amber Lantern St. 3 Comment
  UC2041998  Nephrolepis cordifolia R. E. Riefner Jr. 2013-4-5 13 -59 Orange City of Yorba Linda, southbound 91-Freeway at 55-Freeway interchange ca. 0.6 mi W of Lakeview Ave Comment
  IRVC157  Nephrolepis exaltata var. bostoniensis Randy Acevedo 1965-5-5 HS 533 Orange Newport Beach; East Bluff. Southern Coastal Comment
  RSA741478  Nerium oleander R. E. Riefner 2008-5-30 8 -124 Orange Near City of Orange, Santiago Creek, vicinity of Jackson Ranch Rd. , at Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
  JEPS12502  Nicotiana glauca Alice King Apr 1908 Orange Santiago Creek; Santa Ana Mts. Comment
  UCD126652  Nicotiana glauca E. Frost 1996-5-11 18 Orange Newport Back Bay, 35 yards in along bike path. 7 Comment
  UCD126659  Nicotiana glauca P. B. Kennedy 1925-1-12 11 Orange Irvine Ranch. Comment
  UCR191236  Nicotiana quadrivalvis A. C. Sanders, Fred M. Roberts 2008-4-22 34986 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
  RSA5813  Nitrophila occidentalis C. B. Wolf 1932-6-28 3805 Orange Bryant Ranch: Edge of field on Bixby Ave., 300 ft. east of SW corner of NW1/4 of NE 1/4 of Sec. 33. 9 Comment
  UCR141336  Nolana acuminata Robert DeRuff 1987-5-2 331 Orange Southern Coast, Newport Beach, Newport Back Bay, Big Canyon 8 Comment
  RSA642702  Nolina cismontana R. E. Riefner 2000-3-19 20 -137 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and parallel to Black Star Cy. Road. 396 Comment
  JEPS89240  Nuttallanthus texanus Rimo Bacigalupi and P. C. Hutchison 1962-3-16 8232 Orange 2 mi n of Doheny Beach State Park (along U.S. 101); U.S. 101 Comment
  RSA17145  Oenothera californica subsp. californica Carl B. Wolf 1936-6-12 7944 Orange 1 mile E of Atwood. 91 Comment
  POM225238  Oenothera elata subsp. hirsutissima P. A. Munz 1936-6-30 14171 -a Orange 5 miles south of Garden Grove. Comment
  POM225241  Oenothera elata subsp. hirsutissima P. A. Munz 1936-6-30 14173 Orange 5 miles south of Garden Grove. Comment
  RSA355662  Oenothera elata subsp. hirsutissima Claire Kibbe 1936-07 s.n. Orange Santa Ana Canyon. Comment
  POM219209  Oligomeris linifolia L. M. Booth 1931-5-24 1097 Orange Bluff top N Newport Bay 8 Comment
  RSA609020  Oligomeris linifolia L. M. Booth 1932-5-24 1097 Orange Newport Bay. 8 Comment
  CAS-BOT-BC427453  Oligomeris linifolia Carl B. Wolf 1932-6-28 3792 Orange Bryant Ranch, at the extreme SW. corner of the SW. 40 of the SE. 160 of sect. 27. T4S. R11W. Comment
  UCR204271  Oncosiphon piluliferum Scott D. White, Jeff Lincer 2003-7-7 9616 Orange Coastal Plains & Basins; South Coastal Plain region, Former El Toro Marine Corps Air Station, East of 'El Toro Marine School' and Irvine Blvd.; site of former dump 140 Comment
  POM317772  Opuntia X occidentalis David Walkington 1963-5-17 171 Orange Above intersection of Dana Cove Park rd. and Green Lantern Dr., continuous slope with Dana Cove Park Rd. Dana Point. 61 Comment
  RSA727266  Opuntia dejecta R. E. Riefner 2006-7-23 06 -312 Orange South Coast: Newport Beach (city), north shore of Upper Newport Bay, west c. 0.25 mi. from intersection of Bayview Way and Bayview Place 11 Comment
  UCR187444  Opuntia dejecta R. E. Riefner Jr. 2006-7-23 06- 312 Orange South Coast, Newport Beach (city), north shore of Upper Newport Bay, west c. 0.25 mi. from intersection of Bayview Way and Bayview Place 11 Comment
  CAS-BOT-BC58075  Opuntia vaseyi John Thomas Howell 1927-6-22 2574 Orange Field redacted by CAS, contact the data manager for more information 152 Comment
  POM17442  Orthocarpus purpurascens Philip A. Munz 1923-4-1 6599 Orange Laguna Canyon. 122 Comment
  CAS-BOT-BC355778  Osmadenia tenella John Thomas Howell 1927-7-28 2867 Orange On n. side of Santa Ana Canon [Canyon] 182 Comment
  CAS-BOT-BC355779  Osmadenia tenella Herbert L. Mason 1925-4-25 2903 Orange 5 miles south of Laguna Comment
  CAS-BOT-BC355770  Osmadenia tenella Palmer Stockwell 1935-5-12 1219 Orange Ca. 7 mi. E. of Mission San Juan, on Elsinore Rd. Comment
  UCR26878  Osmorhiza brachypoda E. W. Lathrop 1966-3-23 6108 Orange Santa Ana Mtns, Cleveland National Forest, Trabuco District. 4 mi. NE of Lake Irvine, Black Star Canyon Comment
  IRVC29885  Osteospermum ecklonis Mark A. Elvin, D. Kelch, Barry S. Nerhus, Patricia Iluore 2006-12-9 5326 Orange Newport Backbay; along Bayside Drive ca. 100 m W of Eastbluff Dr. Southern Coastal 5 Comment
  SEINET10801634  Osteospermum ecklonis Charlene A. Bennett, David B. Dunn; Chester T. Dziekanowski 1976-7-21 Bennett 433 Orange Cultivated plants collected in and around the condominium-Pacific Island Estates in Laguna Hills; some native shrubs, etc. 152 Comment
  RSA782192  Osteospermum fruticosum Mark A. Elvin 2003-2-23 2315 Orange Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  UCR217468  Osteospermum fruticosum Mark A. Elvin 2003-2-23 2315 Orange South Coast, Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  UC1143153  Oxalis albicans subsp. californica A. Lewis 1934-2-1 262 Orange Santa Ana Canyon Corona quad 152 Comment
  UCR93936  Oxalis pes-caprae B. G. Pitzer, Paul Gomez 1996-4-30 2790 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  POM18085  Oxytheca trilobata P. A. Munz 1923-9-7 7752 Orange Santa Ana Mountains, trail from Trabuco Canyon to Santiago Peak 1463 Comment
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Jun 22 2019
  RSA64895  Oxytheca trilobata F. W. Peirson 1923-9-7 4041 Orange Santiago Peak 1524 Comment
  CAS-BOT-BC121212  Paeonia californica C. B. Wolf 1931-3-6 1842 Orange Trabuco Canyon, 1/2 mi. above Trabuco oaks, west slope of the Santa Ana Mtns. Upper Sonoran. 457 Comment
  RSA162751  Paeonia californica J. D. Olmsted 1958-3-4 19 Orange Small pond with westward drainage into Irvine lake, 250yards. West of Oak Flat fire road intersection, which is 9 miles southeast of Corona in Santa Ana Mts. 793 Comment
  RSA698740  Paeonia californica Mary Oliver s.n. Orange Santa Ana canyon. Comment
  CAS-BOT-BC354349  Pallenis maritima R. E. Riefner, Jr. 2013-1-16 13 -14 Orange City of Newport Beach, vicinity of Poppy Ave. and Ocean Blvd., coastal bluff at Little Corona Beach 7 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
  UCR2620  Panicum capillare F. M. Reed 1927-10-13 5624 Orange Transverse Range; Santa Ana Mtns; Santa Ana River Canyon, Santa Ana River channel above Sulphur Slide [Hill] 152 Comment
  RSA724032  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2005-10-27 5 -735 Orange City of Yorba Linda, Santa Ana River near Yorba Linda Regional Park. 98 Comment
  RSA754060  Panicum miliaceum A. C. Sanders, Fred M. Roberts 2008-7-16 35865 Orange Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 358 Comment
  RSA629715  Parapholis incurva L. C. Wheeler 1947-5-3 6475 Orange Newport Bay. Comment
  RSA542524  Parietaria hespera var. californica Fred M. Roberts Jr. 1989-3-22 4223 Orange San joanquin Hills: Temple hill, Dripping Springs Cave, lateral to Wood Canyon; 2.6 km S moulton Peak. 76 Comment
  SD247341  Parthenium hysterophorus Jan West 2015-4-22 Orange Santa Ana, SE corner of E 17th St. and Lincoln Ave., 0.5 km east of I-5 on 17th. Right-of-way between RR tracks and Lincoln, etc. 49 Comment
  CAS-BOT-BC259631  Paspalum dilatatum Ira L. Wiggins 1965-10-2 20270 Orange At Hillcrest Park, Fullerton Comment
  UCR174227  Paspalum dilatatum A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33031 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  RSA765876  Paspalum distichum R. E. Riefner Jr. 2005-7-9 05 -544 Orange City of Mission Viejo, Oso Creek, ca. 0.5 mi N of Paseo De Colinas on Camino Capistrano. 86 Comment
  UC455153  Paspalum distichum I. J. Condit 1908-7-21 Orange Los Alamitos Comment
  UCSB47945  Paspalum distichum Roberts, Dar 1980-5-4 Orange Camino Capistrano Rd. below bridge. (Crown Valley Pkwy) 30 Comment
  RSA766069  Paspalum pubiflorum R. E. Riefner Jr. 2007-9-30 07 -419 Orange City of Yorba Linda, Santa Ana Canyon, N bank of Santa Ana River, vicinity of La Palma Ave. and Via Lomas De Yorba East. 110 Comment
  SEINET6655640  Paspalum urvillei R. E. Riefner Jr. 2005-11-4 05 -742 Orange City of Lake Forest, Alton Pkwy at Bertea Rd.; 0 123 Comment
  RSA724060  Paspalum urvillei R. E. Riefner 2005-11-4 5 -742 Orange City of Lake Forest, Alton Pkwy. at Bertea Rd. 123 Comment
  RSA680561  Pectocarya linearis Scott D. White 2003-3-21 8815 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  RSA732068  Pectocarya linearis A. C. Sanders, Fred M. Roberts 2008-3-25 34525 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA1458  Pedicularis densiflora E. R. Johnson 1929-4-11 1259 Orange Sierra Peak Trail. Comment
  RSA790703  Pedicularis densiflora L. C. Hull 1934-3-11 s.n. Orange Ortega Highway. Comment
  RSA698932  Pedicularis densiflora Unspecified 1935-02 s.n. Orange Ortega highway near San Juan Springs. Comment
  UCSB15065  Pedicularis densiflora Breedlove, Dennis 1962-3-9 Orange 14.3 miles east of San Juan Capistrano on State 74 335 Comment
  CDA32097  Pelargonium Mark A. Elvin 2005-5-14 4313 Orange Southern Coastal; UCI Arboretum Comment
  CDA25915  Pelargonium grossularioides Mark A. Elvin 2005-5-14 4314 Orange Southern Coastal; UCI Arboretum Comment
  CAS-BOT-BC71394  Pellaea mucronata Ira L. Wiggins 1966-2-4 20421 Orange on floor of Trabuco Canyon, about 1/2 mi. above canyon mouth Comment
  UC1543033  Pellaea mucronata var. mucronata Donald G. Nelson 1935-4-6 241 Orange e of San Juan Capistrano (and just s of boundary of Cleveland Nat'l Forest, canyon with stream branching n from summer ranger station on main hwy); San Juan Canyon Comment
  RSA0093405  Pennisetum clandestinum D. E. Bramlet 2009-11-20 4416 Orange South Coast: San Diego Creek between Irvine and Newport Back Bay. 4 Comment
  RSA30341  Pennisetum purpureum E. L. Paddock 1943-7-2 12738 Orange Near Dana Point. Comment
  IRVC29810  Pennisetum setaceum Laura D. Lyons, Mark A. Elvin 2006-9-23 424 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
  UCR230831  Penstemon heterophyllus Dick Newell, Judy Booth 2011-6-19 179 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Rd., Cleveland National Forest, above Santiago Canyon 1086 Comment
  UCR234136  Penstemon heterophyllus Dick Newell, Peter Wetzel 2011-8-30 219 Orange Peninsular Range; Santa Ana Mtns., Black Star Canyon Rd. and Edison Rd. 502 Comment
  SEINET10334604  Penstemon heterophyllus subsp. australis Czarnecki 1966-5-25 113 Orange Old botanical gardens at the Ranco Santa Ana Comment
  RSA407935  Penstemon heterophyllus var. australis N. C. Cooper 1944-6-4 1337 Orange San Juan Canyon. 305 Comment
  RSA562819  Penstemon heterophyllus var. australis Steve D. Boyd, Tim S. Ross 1992-5-20 7472 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
  POM256957  Penstemon heterophyllus var. australis W. Pequegnat 1940-6-15 s.n. Orange Santa Ana Mountains: Modjeska Flat. 1372 Comment
  RSA542378  Penstemon heterophyllus var. heterophyllus Bernard Jaroslow 1989-5-29 B- 22 Orange Santiago Canyon: Along the Morrow Trail out of Live Oak Canyon, below truck trail. Comment
  UC718211  Penstemon laetus var. laetus Carl B. Wolf 1936-4-28 7778 Orange Santa Ana Canyon Botanic Garden s Adm. Bldg. (Rancho Santa Ana); , Santa Ana Canyon Botanic Garden 198 Comment
  POM50434  Penstemon spectabilis L. R. Abrams 1901-6-15 1842 Orange Santiago Peak trail. Comment
  RSA542377  Penstemon spectabilis Fred M. Roberts 1988-3-15 3856 Orange Rancho Mission Viejo: Verdugo Canyon, 0.8 km SE Lucas Survey Mark. 247 Comment
  RSA5315  Penstemon spectabilis B. D. Stark 1993-1-5 s.n. Orange 2 mi. S of summit of Skyline Drive on road along ridge to Santiogo Peek. 1067 Comment
  CAS-BOT-BC330341  Pentachaeta aurea Le Roy Abrams 1903-4-17 3259 Orange Near El Toro Comment
  CAS-BOT-BC330342  Pentachaeta aurea P. C. Everett 1935-4-22 6463 Orange Santa Ana Canyon, 0.25 mi W of Horseshoe Bend 121 Comment
  RSA702683  Pentachaeta aurea Scott D. White, Michael Honer 2004-5-17 10397 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
  RSA0066081  Pentagramma triangularis Valerie L. Soza, LeRoy Gross 1999-6-7 482 Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  RSA689  Petunia parviflora J. T. Howell 1927-7-18 426 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  RSA13072  Phacelia brachyloba Percy C. Everett 1935-7-11 7267 Orange Santa Ana Mts, Main Divide Motorway, 1.7miles N of Jct with Trabuco Can road. 1220 Comment
  RSA539410  Phacelia brachyloba Fred M. Roberts, Carol A. Roberts 1988-6-9 4089 Orange Santa Ana Mountains: Main Divide Truck Trail, Modjeska Peak, south slope. 0.4km SW summit. 1518 Comment
  VVC263  Phacelia brachyloba P. J. MacKay 1990-5-25 s.n. Orange Peninsular Range, Hwy 74 near San Juan Hot Springs 198 Comment
  RSA594  Phacelia cicutaria var. hispida J. T. Howell 1927-7-26 477 Orange Claymine Canon near Sierra Peak. 244 Comment
  RSA632934  Phacelia cicutaria var. hispida Valerie L. Soza, LeRoy Gross 1999-6-10 522 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road. 1555 Comment
  RSA3175  Phacelia distans Carl B. Wolf 1932-3-8 2688 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  RSA751985  Phacelia distans Fred M. Roberts 2008-3-26 6800 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 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
  UCR230241  Phacelia distans Dick Newell, Don Millar 2011-3-15 085 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, top of Agua Chinon Wash along Limestone Cyn. Rd. 454 Comment
  RSA605  Phacelia distans J. T. Howell 1927-6-24 209 Orange Olinda 152 Comment
  RSA699144  Phacelia hispida R. H. McArthur 1934-4-28 s.n. Orange Ladd Canyon Comment
  RSA759105  Phacelia imbricata Robt. Allen, Genevieve K. Walden, Lisa W. Young 2008-6-26 s.n. Orange Modjeska Peak, W-facing slope within 2 m of the access road up Modjeska Peak. Approximately midway between the peak's south-facing slope and the sharp bend in the extreme N end of the road. 1643 Comment
  OBI13753  Phacelia minor Barrett Anderson 1975-5-10 s.n. Orange In Cleveland Natl Forest 244 Comment
  POM8648  Phacelia parryi P. A. Munz, R. D. Harwood 1920-4-24 3780 Orange Sierra [Freemont] Canyon 366 Comment
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Sep 17 2011
  RSA681269  Phacelia parryi Scott D. White, Michael Honer 2003-5-29 9434 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
  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
  UC537166  Phacelia ramosissima var. austrolitoralis L. M. Booth 1932-5-19 1060 Orange Newport Bay 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
  RSA539412  Phacelia suaveolens subsp. keckii Fred M. Roberts, C. A. Roberts 1988-6-9 4086 Orange Santa Ana Mtns.: Modjeska Peak, 0.9km SW summit. 1542 Comment
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Jul 21 2018
  SEINET3119073 Image available Phacelia tanacetifolia P. A. Munz 1934-3-26 13133 Orange Newport Beach 12 Comment
  RSA738990  Phacelia viscida Minor Warne 1934-3-17 s.n. Orange Gypsum Canyon Comment
  IRVC18590  Phalaris aquatica Karlin G. Marsh 1980-8-13 s.n. Orange S of Trabuco Canyon, Sect. 12, Hinricks Parcel. Santa Ana Mountains Comment
  JEPS45890  Phalaris minor Lawrence M. Booth 1932-5-19 1076 Orange Newport Bay Comment
  RSA708439  Phalaris minor Mark Elvin 2004-5-2 3422 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW of UC Irvine Campus center. 3 Comment
  RSA683070  Pholistoma auritum var. auritum Fred M. Roberts, D. E. Bramlet 2003-3-13 5599 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
  UC536905  Phyla lanceolata Lawrence M. Booth 1932-7-1 1238 Orange Anaheim Meadows Comment
  RSA683955  Phyllospadix scouleri E. Yale Dawson 1957-11-21 17886 Orange Laguana Beach, Orange County Comment
  CLARK-A1528-4427  Phyllospadix torreyi John C. Roos 1960-8-27 Orange Dana Point Comment
  RSA33799  Phyllospadix torreyi N. C. Cooper 1942-11-8 890 Orange Laguna Beach. Comment
  RSA23579  Physalis acutifolia E. R. Johnson 1939-9-8 9537 Orange Santa Ana Canyon, Rancho Santa Ana., in #2 Valencia Orange Grove. 122 Comment
  UCR98774  Physalis crassifolia D. E. Bramlet 1994-6-2 2380 Orange San Joaquin Hills. On ridgeline NW of Laguna Canyon; located 396 m west of Laguna Canyon Road and 305 m north of Little Sycamore Canyon 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
  POM17438  Picris echioides P. A. Munz 1923-4-1 6595 Orange Laguna Lakes. 61 Comment
  RSA184125  Picris echioides I. L. Wiggins 1965-10-18 20278 Orange Vacant lot NE corner of Chapman Ave and Victor Dr, Fullerton. Comment
  RSA703088  Picris echioides Fred M. Roberts, Art Davenport 2003-9-11 6006 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy. Cristianitos Cyn., 0.79 km N Sycamore Gate 0.23 km w of Crisianitos Road. 126 Comment
  RSA752810  Picris echioides A. C. Sanders, Fred M. Roberts 2008-8-7 35993 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  UCR191217  Picris echioides A. C. Sanders 2008-4-29 35143 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
  CAS-BOT-BC402195  Pinus attenuata R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49694 Orange Northern Santa Ana Mountains: Sierra Peak. Comment
  RSA12825  Pinus attenuata C. B. Wolf 1934-12-21 6259 Orange So. slope of main ridge, saddle n.w. of Sugarloaf Pk. (Pleasants Pk.) 1 3/10 mi. so. of summit of Skyline Drive, Santa Ana Mts. 1159 Comment
  SEINET4671985 Image available Pinus attenuata T. C. Arambula 1966-1 109 Orange Claremont, Rancho Santa Ana Botanic Garden Comment
  UC1713694  Pinus attenuata Carl B. Wolf 1934-12-21 6259 Orange 1.3 mi s summit of Skyline Drive (saddle nw of Sugarloaf Pk. (Pleasants Pk.), s slope of main ridge); Santa Ana Mountains 1158 Comment
  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
  RSA731007  Pinus sabiniana Fred M. Roberts, B. Allen, D. Olsen 2007-1-19 6499 Orange near Black Star Cyn. Rd. Upper Fremont Cyn. near mountain divide, 0.9 km ENE Horseshoe Spring and 0.1 km WSW Beek s Place. (4.1 km NW Pleasants Pk). West-facing slope on sandy, rocky soils in chaparral. 840 Comment
  UCR231188  Pinus sabiniana A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39944 Orange Peninsular Range; Santa Ana Mountains, Beek's Place on Main Divide Truck Trail 863 Comment
  MACF017433  Pinus taeda Trudy R. Ericson 1974-6-13 167 Orange Little Cypress Road about 1 mi. south of Little Cypress Bayou Comment
  RSA749312  Piperia cooperi Fred M. Roberts 1999-4-22 5193 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
  SBBG120621  Plagiobothrys acanthocarpus R. E. Riefner 2006-4-12 06 -116 Orange Irvine, N foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Cyn Rd 46 Comment
  UCSB48072  Plagiobothrys acanthocarpus Fritzke, Sue; Roberts, Jr., Fred 1982-4-3 Orange Dana Point; hills, 1.0 km. N of Dana Hills High School; 1.9 km. W of Marco Forster Junior High School 100 Comment
  IRVC20784  Plagiobothrys collinus var. californicus Fred M. Roberts, S. L. Fritzke 1982-4-2 465 Orange hills, 3.5km ESE Aliso Peak; 3.2km ESE Alicia Fire Station, N of Del Avion, Laguna Niguel 100 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
  UCSB52455  Plagiobothrys collinus var. californicus Fritzke, Sue; Roberts, Jr., Fred 1982-4-3 Orange Dana Point; hills, 1.0 km. N Dana Hills High School; 1.9 km. W Marco Forster Junior High School 100 Comment
  RSA588798  Plagiobothrys nothofulvus Fred M. Roberts, D. Bontrager 1990-4-18 4562 Orange Rancho Mission Viejo: ridge between Christianitos and Gabino Canyons (Riverside Cement Lease Holding), 5.5 km SE Playa Survey Marker. 152 Comment
  RSA680531  Plagiobothrys nothofulvus Scott D. White 2003-3-21 8805 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  CAS-BOT-BC65022  Planodes virginica D. E. Bramlet 2004-3-26 3542 Orange Fairview Park in Costa Mesa, 183 m west of Canyon School and 366 m NW of intersection of Wilson and Canyon Dr. 24 Comment
  RSA412598  Plantago bigelovii subsp. californica Anstruther Davidson 1910-04 2350 Orange Corona Del Mar. Comment
  RSA708225  Plantago erecta Fred M. Roberts, Robert L. Allen, Chris Barnhill, Carol A. Roberts 2005-4-10 6168 Orange Costa Mesa: Fairview Park, west of north end of Canyon Drive, c.a. 0.2km WNW Marison Special Education Center (Canyon Sch. on topos). 24 Comment
  UCSB56505  Plantago erecta Marsh, K. 1978-3-16 Orange Irvine Ecological Preserve; Hill #1 57 Comment
  RSA762  Plantago hirtella var. galeottiana J. T. Howell 1927-7-27 493 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
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Aug 19 2011
  RSA734764  Plantago lanceolata A. C. Sanders, T. B. Salvato 2008-5-13 35345 Orange Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence. 366 Comment
  RSA0054909  Plantago lanceolata Lena Danner 1932-5-9 s.n. Orange Along Villa Park Road, Villa Park. Comment
  RSA698380  Plantago lanceolata C. H. Mueller 1932-6-2 s.n. Orange Cor. Almond + Pine-Orange along roadside. Comment
  RSA683234  Plantago major Scott D. White, Matt Carlton 2003-11-20 9870 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (Dana Point) 24 Comment
  RSA0028737  Plantago pusilla R. E. Riefner 2000-3-14 20 -135 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Cyn.Road. 305 Comment
  RSA725533  Platanus X acerifolia Fred M. Roberts 2007-9-11 6567 Orange Aliso Viejo: tributary to Aliso Creek on west side of Moulton Pkwy., 0.2 km N Aliso Viejo Pkwy., adj. to Kinder Care Learning Center. 83 Comment
  RSA703087  Platanus racemosa Fred M. Roberts, Art Davenport 2003-9-11 6007 Orange Rancho Mission Viejo: Donna O'Neil Land Conservancy, tributary west of Cristianitos Cyn., 1.52 km NNW Sycamore Gate and 250 m W of Cristianitos Road. 152 Comment
  RSA725469  Platanus racemosa Fred M. Roberts, Megan Lulow 2007-7-30 6549 Orange Fremont Canyon, 1.3 km NE Irvine Lake spillway, North Irvine Ranch Policy Area. 253 Comment
  RSA731755  Platanus racemosa Fred M. Roberts, Sandy Leatherman 2007-11-9 6650 Orange San Juan Canyon along San Juan Creek, within the community of San Juan Hot Springs. 216 Comment
  RSA731911  Platanus racemosa Fred M. Roberts, Sandy Leatherman 2007-11-27 6668 Orange Yorba Linda: Santa Ana Canyon, Santa Ana River wash, S of E La Palma Road near Via Lomas de Yorba Linda, about 0.6 km W Gypsum Cyn. bridge. 113 Comment
  SEINET12102790  Platystemon californicus Unknown 1884-1 s.n. Orange Anaheim Comment
  CAS-BOT-BC414242  Plecostachys serpyllifolia R. E. Riefner, Jr. 2007-4-28 07 -188 Orange City of Newport Beach, between Dover Beach and North Star Beach, W side of Polaris Dr., midway between Morning Star Ln. and Evening Star Ln. 6 Comment
  CDA7064  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-4-28 07 -190 Orange City of Newport Beach, Dover Beach, vicinity of Morning Star Lane and Polaris Drive. Comment
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Dec 13 2012
  RSA0025114  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-7-9 08 -220 Orange City of Laguna Beach, bluff area W. of West St. and Pacific Coast Highway. 5 Comment
  SBBG126061  Plecostachys serpyllifolia R. E. Riefner Jr. 2004-12-30 04 -681 Orange vicinity of W St and Pacific Coast Hwy; City of Laguna Beach 4 Comment
  SEINET6413740  Plecostachys serpyllifolia R. Spellenberg 2014-5-6 14775 Orange Laguna Beach, Aliso Creek Beach Park; ca 500 m S of lat/long. 1 Comment
  UCR238459  Plecostachys serpyllifolia R. E. Riefner Jr. 2005-9-9 05- 654 Orange South Coast, city of Lake Forest, Aliso Creek, south side of Portola Parkway and west of El Toro Road 225 Comment
  RSA151079  Pluchea odorata P. H. Raven 1961-10-15 16855 Orange Dyke along road to Yorba Linda just north of US Hwy 91 114 Comment
  RSA719408  Pluchea odorata Fred M. Roberts, Robert L. Allen 2006-10-8 6427 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
  UCR240106  Pluchea odorata Dick Newell, Judy Booth 2012-9-26 287 Orange South Coast, Newport Beach, Back Bay Drive at Big Canyon parking area 3 Comment
  RSA930  Pluchea odorata J. T. Howell 1927-9-24 751 Orange Santa Ana River Bottom, Rancho Santa Ana 152 Comment
  CAS-BOT-BC255536  Poa annua Ira L. Wiggins 1966-2-12 20441 Orange On W side of State College Blvd, opposite Electra Way, Fullerton Comment
  UCR193623  Poa annua A. C. Sanders, T. B. Salvato 2008-5-13 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
  PASA1247  Poa howellii Frank W. Peirson 1923-5-6 Orange ""Holy Jim"" trail to Santiago Peak 990 Comment
  IRVC15481  Poa scabrella Bruce Reynolds 1965-4-19 s.n. Orange Newport Beach; Corona del Mar, Corona Del Mar High School. Southern Coastal Comment
  IRVC25406  Poa secunda Fred M. Roberts 1987-4-3 3330 Orange San Joaquin Hills; Irvine; central Shady Canyon, 2.9km NE Signal Hill. Central coastal 107 Comment
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Feb 17 2017
  RSA73  Poa secunda J. T. Howell 1928-2-7 830 Orange Near the ranch houses, Rancho Santa Ana 152 Comment
  RSA798603  Poa secunda R. F. Thorne, E. W. Lathrop 1977-5-18 49746 Orange Santa Ana Mountains: summit of Santiago Peak 1733 Comment
  SD181748  Poa secunda subsp. secunda Valerie Soza, LeRoy Gross 1999-6-7 489 Orange Santa Ana Mountains, west side of Modjeska Peak, along Main Divide Road 1448 Comment
  RSA0097081  Polycarpon depressum J. Russell Bruff s.n. Orange Roadside. Comment
  RSA716658  Polycarpon tetraphyllum Fred M. Roberts 2005-5-13 6187 Orange San Juan Capistrano; Ortega Ranch Business Center site, between Rancho Viejo Rd. and I-5 freeway adjacent to Horno Creek; 0.6km NE Mission San Juan Capistrano. 54 Comment
  SD239845  Polygala cornuta subsp. fishiae A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39941 Orange Peninsular Range; Santa Ana Mtns. : near Pleasants Peak along the Main Divide Truck Trail. 1143 Comment
  IRVC29819  Polygonum Artie Thomas, Mark A. Elvin 2006-9-23 609231 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
  JEPS51306  Polygonum argyrocoleon Lawrence M. Booth 1932-7-25 1317 Orange Santa Ana River; coastal Comment
  UCR193820  Polygonum aviculare A. C. Sanders, Fred M. Roberts 2008-7-16 35866 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 370 Comment
  UCR96858  Polygonum aviculare Scott D. White 1993-4-28 1284 Orange Pacific slope, Tustin Marine Corps Air Station, NW of Peters Canyon Channel, between Moffett Dr. & Warner Comment
  CAS-BOT-BC414038  Polygonum aviculare subsp. aviculare Carl B. Wolf 1932-6-20 3755 Orange Rancho Santa Ana, Santa Ana Canyon situated around administration building 198 Comment
  CAS-BOT-BC414039  Polygonum aviculare subsp. aviculare Alma Sweet 1919-1-1 s.n. Orange Unspecified Comment
  CAS-BOT-BC414042  Polygonum aviculare subsp. aviculare Ira L. Wiggins 1965-11-7 20364 Orange Vacant lot on west side of State College Boulevard near Troy High School, Fullerton Comment
  CDA21557  Polygonum lapathifolium A. Thomas, Mark A. Elvin 2006-9-23 609231 Orange Southern Coastal; San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; southwest edge, along San Diego Creek, north of University Drive, east of Highway 73. Comment
  RSA731946  Polygonum lapathifolium Fred M. Roberts, Sandy Leatherman 2007-11-27 6689 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. c.a. 0.3km S Fairmont Blvd. 118 Comment
  RSA0054922  Polygonum lapathifolium Keith E. Hoffmaster 1933-10-1 488 Orange Near Tustin. Comment
  RSA21  Polypodium californicum J. T. Howell 1928-2-7 810 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA85051  Polypodium californicum F. W. Peirson 1919-11-8 1516 Orange South of Arch Beach, near Laguna Beach Comment
  UCR209523  Polypodium californicum Fred M. Roberts 2008-4-16 6907 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
  RSA6043  Polypogon australis C. B. Wolf 1932-6-13 3723 Orange Fullerton, Rose Drive 53 Comment
  CSUSB466  Polypogon monspeliensis John S. Davis 1972-5-6 720506 3 Orange Newport Beach; 1.1 miles north from corner of San Jaquin Hills road and Back Bay road; beneath road bridge, along creek bed leading to marsh Comment
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Oct 7 2013
  IRVC15372  Polypogon monspeliensis J. B. Anderson 1966-4-22 607 Orange San Joaquin Hills: Los Trancos Canyon, along dirt road and near spring. Santa Ana Mountains 122 Comment
  IRVC24285  Polypogon monspeliensis Fred M. Roberts 1985-10-26 2515 Orange Santa Ana River: adjacent to Huntington Beach; 0.7km SSW Adams Street bridge. southern coastal 4 Comment
  IRVC8402  Polypogon monspeliensis J. B. Anderson 1966-4-17 593 Orange Newport Beach: along roadside ditch in field NE of Newport Harbor High School. southern coastal Comment
  RSA678719  Polypogon monspeliensis Fred M. Roberts, Michelle Lee 2001-6-29 5504 Orange Rancho Mission Veijo: Chiquita Ridge, 0.3km WnW Rancgo Macian Survey Marker. PCR Vernal Pool 4., (33 33'11N,117 37' 18 W; T7S R7W, NW 1/4sec 21) 226 Comment
  RSA697713  Polypogon monspeliensis Anonymous s.n. Orange Near Orange Co. Park. 793 Comment
  SD220029  Polypogon monspeliensis Mark A. Elvin 2004-5-2 3416 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW UC Irvine campus center. 3 Comment
  UCR192978  Polypogon monspeliensis A. C. Sanders, Fred M. Roberts 2008-6-17 35466 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  UCSB52417  Polypogon viridis Roberts, Fred 1982-10-18 Orange Laguna Beach; Temple Hill, east flank, east margin of Top of the World School 295 Comment
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Jan 25 2021
  RSA679095  Polystichum imbricans subsp. curtum Fred M. Roberts 2003-6-25 5950 Orange Santiago peak, north slopes along ridge east of Main Divide truck trail, 0.6km NNW summit. 1605 Comment
  IRVC28638  Populus balsamifera subsp. trichocarpa Mark A. Elvin, A. C. Sanders 2005-9-2 4493 Orange Mouth of Lion Cyn, just up stream from Lower San Juan Campground. Santa Ana Mtns 457 Comment
  UCR113446  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr., Adrian Wolf 2000-6-24 20- 116 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, Fremont Canyon, N. of Santiago Creek & immediately N. of major stream fork 305 Comment
  CAS-BOT-BC102599  Populus fremontii Marcus E. Jones 1930-3-3 26533 Orange Santa Ana Mountains Comment
  RSA542356  Populus fremontii Fred M. Roberts Jr. 1987-5-12 3436 Orange Santa Ana River: Horseshoe Bend, 3.9km S San Juan Hill; 1.0km ENE Wier Canyon Road bridge. 104 Comment
  RSA0013971  Populus fremontii subsp. fremontii Fred M. Roberts 2008-5-20 6991 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
  UCR154273  Populus fremontii subsp. fremontii Mark A. Elvin 2004-5-2 3430 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 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
  RSA562731  Porophyllum gracile Steve Boyd, Timothy S. Ross 1992-5-19 7447 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
  RSA934  Porophyllum gracile J. T. Howell 1927-7-28 509 Orange Nolina Canyon, Rancho Santa Ana 152 Comment
  CAS-BOT-BC445243  Portulaca oleracea Ira L. Wiggins 1965-11-3 20313 Orange East side of California State College campus, between State College Blvd and Placentia Avenue, Fullerton. Comment
  RSA0054902  Portulaca oleracea Keith E. Hoffmaster 1936-10-5 728 Orange Santa Ana. Comment
  POM1018  Potamogeton nodosus D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon. Comment
  CAS-BOT-BC453826  Potamogeton nodosus Street; Williams 1919-5-4 2689 Orange Laguna Lakes Comment
  POM6394  Potamogeton nodosus L. T. Street, Williams 1919-5-4 2689 Orange Laguna Lakes. [now Big Laguna Lake, San Diego Co.] Comment
  UCR106274  Prunus caroliniana B. G. 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 & Moro Canyon), to just below intersection with 'Poles' trail 152 Comment
  RSA701207  Prunus ilicifolia Keith E. Hoffmaster 1934-4-22 s.n. Orange Santa Ana Mountains Comment
  RSA697115  Pseudognaphalium biolettii Minor Warne 1934-4-14 s.n. Orange Laguna Canyon Forks. Comment
  UCR230237  Pseudognaphalium biolettii Dick Newell, Don Millar 2011-3-15 088 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
  UCD135053  Pseudognaphalium biolettii R. Townsend 1939-12-29 164 Orange Lower Telegraph Canyon. Comment
  OBI77910  Pseudognaphalium leucocephalum Robert Lee Allen 2012-8-11 s.n. Orange Santa Ana Mts, Caspers Wilderness Park, Bell Cyn. UTM 11S 3712054.00mN, 447741.00 mE 127 Comment
  SD187362  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-2-13 07 55 Orange San Juan Capistrano, vicinity of La Novia Ave. and San Juan Creek. 29 Comment
  SD236118  Pseudotsuga macrocarpa June Latting, F. Shropshire 1972-4-28 Orange Peninsular ranges/Santa Ana Mountains: Silverado Canyon, 6.3 mi from Silverado Forest Station [presumably up canyon from Silverado] at S curve in road 1098 Comment
  RSA617798  Psilocarphus brevissimus R. E. Riefner 1998-4-3 98 -252 Orange Newport back-bay, west of Jamboree Rd. Comment
  IRVC27016  Psilotum nudum A. C. Sanders, Mark A. Elvin 2003-11-9 27356 Orange Irvine: UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. Southern Coastal 15 Comment
  IRVC28199  Psoralea macrostachya A. C. Sanders, Mark A. Elvin 2005-9-2 31605 Orange Upper Holy Jim Canyon, a major tributary of Trabuco Cyn, along the trail in switchbacks. Peninsular Ranges, Santa Ana Mtns 820 Comment
  RSA698725  Psoralea macrostachya W. Blanchard 1932-5-25 s.n. Orange Irvine Park Comment
  RSA790025  Psoralea macrostachya Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49564 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  IRVC26429  Ptelea aptera Mark A. Elvin 2004-2-22 3151 Orange UCI Arboretum Southern Coastal 15 Comment
  POM280432A  Pterostegia drymarioides Lyman Benson 1932-3-26 3196 Orange Dana Point. 61 Comment
  CAS-BOT-BC362140  Pulicaria paludosa T. C. Fuller 1963-10-9 11362 Orange N. facing slope of the Santa Ana Canyon, 0.1 mi. s. of Riverside Freeway to Anaheim, ca. 2 mi. w. of the Riverside Co. line in Orange Co. Comment
  CDA7614  Pulicaria paludosa T. C. Fuller 1963-10-9 11362 Orange Santa Ana Canyon, 0.1 mile south of Riverside Freeway to Anaheim, ca. 2 miles west of the Riverside County line. 0 Comment
  IRVC29828  Pulicaria paludosa Tom McCrainie, Mark A. Elvin 2006-9-23 2 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
  OBI59561  Pulicaria paludosa T. C. Fuller 1963-10-9 11362 Orange Santa Ana cyn, 0.1 mi S of riverside fwy to Anaheim, ca 2 mi W of the Riverside Co. line Comment
  RSA725460  Pulicaria paludosa Fred M. Roberts 2007-8-6 6557 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
  RSA725473  Pulicaria paludosa Fred M. Roberts, Megan Lulow 2007-7-30 6545 Orange Fremont Canyon, 1.3 km NE Irvine Lake spillway, North Irvine Ranch Policy Area. 253 Comment
  RSA750903  Pulicaria paludosa A. C. Sanders, Fred M. Roberts 2008-7-3 35710 Orange Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  UCR53764  Pulicaria paludosa Bonnie Busenberg, W. Wisura 1987-7-23 4170 Orange Newport Bay at junction of Back Bay Drive and San Joaquin Hills Road Comment
  UCR84428  Pycnanthemum californicum Steve Boyd, T. S. Ross 1994-9-14 8351 Orange Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon trail at stream crossing in Lucas Canyon. 311 Comment
  UCR140885  Pyracantha koidzumii Robert DeRuff 1985-6-22 267 Orange Southern Coast, Newport Beach, Newport Back Bay, along the path between Northstar Beach and the end of Mariners Drive 2 Comment
  UCD47720  Quercus X acutidens James Trumbley 1980-1 s.n. Orange Crystal Cove State Park, ca. 1 mile inland, in Moro Canyon, a coastal canyon between Laguna Beach and Corona del Mar, Orange County, California. 30 Comment
  RSA12364  Quercus X grandidentata E. R. Johnson 1934-1-6 5564 Orange Santa Ana Mts., on slopes of Sierra Peak at about the head of Claymine Canyon. 762 Comment
  UCR174210  Quercus agrifolia A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33044 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
  IRVC20799  Quercus agrifolia var. agrifolia Fred M. Roberts 1982-4-18 522 Orange Hot Springs Canyon; 0.8km SW Falcon Group Camp. Santa Ana Mountains 1005 Comment
  IRVC24544  Quercus berberidifolia Fred M. Roberts, R. L. Allen 1985-8-19 2129 Orange Mission Viejo: lateral to Engilish Canyon along Vista de Lago Drive; 3.4km ENE El Toro Fire Station. Southern Coastal 218 Comment
  RSA590959  Quercus berberidifolia Fred M. Roberts, Karlin G. Marsh 1991-4-10 4765 Orange Laguna Beach: South Laguna, Temple Hill, ridge between upper Hobo Canyon and Aliso Gorge, 1.7 km NW Niguel Hill summit. 213 Comment
  UCR132889  Quercus berberidifolia Adrian Wolf 2000-6-1 468 Orange Santa Ana Mtns., North Ranch Policy Plan Area, West Fremont Canyon 534 Comment
  UCR242703  Quercus berberidifolia Fred M. Roberts 2012-5-10 7583 Orange SAN JOAQUIN HILLS: Buck Gully, south fork, north slope of Pelican Hill, along Pelican Hills Dr., 0.3 km N summit Pelican Hill. 189 Comment
  UCR273490  Quercus berberidifolia A. C. Sanders, Glen Morrison 2016-8-4 42609 Orange Peninsular Range; Santa Ana Mountains, dirt road off North Main Divide Road (Forest Rte 3S04), north of Los Pinos Spring, 3.87 km NW (286 deg. ) of El Cariso Fire Station 1101 Comment
  UCSB58639  Quercus berberidifolia Muller, Cornelius 1953-5-2 Orange Swain Canyon, lower end, Catalina Island Comment
  UCSB52409  Quercus dumosa Roberts, Fred 1982-7-1 Orange South Laguna; Niguel Hill, at end of Sea Island Dr., 1.9 km. SE Aliso Peak 210 Comment
  RSA684303  Quercus engelmannii Fred M. Roberts, David E. Bramlet 2003-3-13 5597 Orange Donna O'Neill Land Conservancy: Shady Cyn. tributary to Cristianitos Canyon, 1,200m NW Sycamore Gate and 914m W Cristianitos Rd. 177 Comment
  RSA688975  Quercus engelmannii Fred M. Roberts, D. E. Bramlet 2003-4-10 5645 Orange Rancho Mission Viejo: Donna O'Neill Land conservancy, Back Road, ridge between Cristianitos Cyn, and Segunda Deshecha Canada, 1.45km WNW Gato Gate. 216 Comment
  UCR98933  Quercus engelmannii J. E. Harrison 1996-10-17 500 Orange San Joaquin Hills, Upper Coyote Canyon, just north of Signal Peak and adjacent to south side of San Joaquin Hills Transportation Corridor (SR-73). 250 Comment
  CAS-BOT-BC487559  Quercus ilex R. E. Riefner, Jr. 2014-11-21 14 -393 Orange City of Lake Forest, English Canyon, Aliso Creek, S of Cherry Ave., end of 2nd St., Aliso Creek Bikeway 135 Comment
  CAS-BOT-BC105117  Quercus kelloggii J. K. Munhall; S. E. Gooden 1945-11-8 11511 Orange head of Horsethief Canyon 1143 Comment
  UCD46910  Quercus lobata James Trumbley 1980-1 1 Orange Crystal Cove State Park, ca. 1 mile inland, in Moro Canyon, a coastal canyon between Laguna Beach and Corona del Mar, Orange County, California. 30 Comment
  UCD46912  Quercus lobata G. A. Marsh 1980-5-8 s.n. Orange Crystal Cove State Park: Moro Canyon. Comment
  CAS-BOT-BC516762  Quercus suber R. E. Riefner, Jr. 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 7 Comment
  CAS-BOT-BC104666  Quercus wislizeni Carl B. Wolf 1933-10-8 55339 Orange Santa Ana Mts. Main divide motorway, NW side of Trabuco Peak 1310 Comment
  IRVC16147  Quercus wislizeni var. frutescens R. Meinzer, T. Mulroy 1971-4-25 s.n. Orange Santa Ana Mountains: Upper Trabuco Canyon. Peninsular Ranges Comment
  RSA644971  Quercus wislizeni var. frutescens R. E. Riefner Jr. 2000-4-13 2 -361 Orange NCCP North Ranch Policy Plan Area. Upper drainage of Fremont Canyon near National Forest boundary, S. of Claymore Mine. USGS 7.5' Quad: Black Star Canyon. 610 Comment
  RSA679225  Quercus wislizeni var. frutescens Fred M. Roberts 2003-6-25 5946 Orange Santiago peak, north slopes along ridge east of Main Divide truck trail, 0.6km NNW summit. 1605 Comment
  RSA725579  Quercus wislizeni var. frutescens Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6535 Orange Along dirt road on ridge between Fremont and Black Star Cyns., 5.2km ENE Irvine Lake Spillway and 1.7km W Hidden Ranch. 739 Comment
  RSA68306  Rafinesquia californica G. R. Campbell 1951-5-30 16101 Orange San Juan Canyon, Ortega Hwy, 4 mi. inside west border of Cleveland National Forest. 152 Comment
  UCR209061  Rafinesquia californica A. C. Sanders, Fred M. Roberts 2008-4-22 35049 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slopes of south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado 488 Comment
  IRVC14751  Rafinesquia californica A. S. Boughey 1968-4-16 242 Orange Santiago Canyon/Lower Modjeska Cyn, Fleming Property. Santa Ana Mountains Comment
  POM296378B  Ranunculus californicus Lyman Benson 1947-4-27 12338 Orange Carbon Canyon. Chino-Puente Hills; Pacific Slope Drainage Area. 244 Comment
  HSC92525  Raphanus raphanistrum D. Atwood 1993-3-29 17737 Orange Huntington Beach along Beach Blvd., 0.5 mi. N of the beach Comment
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Jul 14 2012
  IRVC19391  Raphanus sativus R. L. Allen 1983-2-12 A623 Orange Fullerton; Hillcrest Park, slope bordering E Valley View Drive. Southern Coastal Comment
  CDA25895  Rhamnus alaternus Mark A. Elvin, D. G. Kelch 2006-12-9 5300 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  UC1121751  Rhamnus californica A. Lewis 1934-4-1 381 Orange Black Star Canyon Cleveland National Forest, Corona Quad. 304 Comment
  UCR174207  Rhamnus californica A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33057 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
  RSA581437  Rhamnus californica subsp. californica Fred M. Roberts, Gordon Marsh 1989-5-21 4355 Orange Santa Ana Mountains: small tributary canyon to Santiago Canyon, Flemming Regional Park, just E of Modjeska, ca. 3.3 km WSW Laurel Springs. 451 Comment
  CAS-BOT-BC56036  Rhamnus ilicifolia C. B. Wolf 1931-3-6 1845 Orange 1/2 mile above Trabuco Oaks, Trabuco Canyon, west slope of the Santa Ana Mts. 457 Comment
  LA207817  Rhamnus ilicifolia Carl B. Wolf; 1931-3-6 1841 Orange Santa Ana Mountains, Trabuco Canyon, 0.5 mi. above Trabuco Oaks 457 Comment
  OBI5938  Rhamnus ilicifolia Carl B. Wolf 1931-3-6 1845 Orange W slope Santa Ana mts, Trabuco cyn, 1/2 mi above Trabuco oaks 457 Comment
  POM246501  Rhamnus ilicifolia Carl B. Wolf 1933-11-3 5531 Orange Silverado Canyon at base of Silverado motorway. Upper Sonoran. 732 Comment
  RSA184091  Rhamnus ilicifolia I. L. Wiggins 1966-2-25 20473 Orange Firestone Boy Scout Reservation in hills E. of Brea. Comment
  RSA791876  Rhamnus ilicifolia Robert F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49614 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station Comment
  UC1121790  Rhamnus tomentella subsp. tomentella J. B. Spring 1931-4-14 32 Orange Cold Spring Canyon Corona Quad. 548 Comment
  CAS-BOT-BC167873  Rhus integrifolia John Thomas Howell 1927-6-16 2445 Orange North side Santa Ana [Canon] Canyon 152 Comment
  CAS-BOT-BC170435  Rhus integrifolia Helen D. Geis 1902-4-1 s.n. Orange Red Hill near Santa Ana Comment
  RSA0125890  Rhus integrifolia Fred M. Roberts Jr. 2012-4-24 7512 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
  RSA748165  Rhus integrifolia K. M. Meyer, A. Townesmith, T. Scott 2007-3-10 8 Orange Cleveland National Forest, 3 mi. N of Main Divide Rd./NF3S04, off Hwy. 74. 950 Comment
  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
  UCR16589  Rhus integrifolia David M. Peterson 1966-3-9 660309- 7 Orange 3 mi east of San Juan Capistrano on the road to Elsinore 306 Comment
  UCR193787  Rhus integrifolia A. C. Sanders, Fred M. Roberts 2008-7-3 35693 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Windy Ridge Rd. at hairpin turn/road junction below huge sandstone boulder (visible on Google Earth), 1.2 mi. SE of Walnut Canyon Reservoir 285 Comment
  UCR223418  Rhus integrifolia Dick Newell, Don Millar 2011-2-15 064 Orange South Coast, San Joaquin Hills, Laguna Wilderness Park, along Stagecoach Trail 131 Comment
  CLARK-A1528-117  Rhus laurina Cesareo Perez 1971-5-4 1 Orange Villa Park Comment
  UCR44902  Rhus laurina B. G. Pitzer, L. F. LaPre 1986-10-20 0321 Orange Trabuco Road at intersection with Sand Canyon Avenue, NW of El Toro Marine Air Station 79 Comment
  CAS-BOT-BC167931  Rhus ovata C. B. Wolf 1931-3-6 1857 Orange 1 1/2 miles below Trabuco Camp Ground, Trabuco Canyon, west slope Santa Ana Mts. 548 Comment
  CAS-BOT-BC167932  Rhus ovata Ira L. Wiggins 1966-3-22 21551 Orange Hillside at end of pavement, Silverado Canyon, about 5 mi above Ranger Station, Cleveland National Forest Comment
  LA62870  Rhus ovata C. B. Wolf; 1931-3-6 1857 Orange Santa Ana Mountains, Trabuco Canyon, 1.5 mi. below Trabuco Camp Ground 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
  RSA696222  Rhus ovata Anonymous 1931-1-1 s.n. Orange Santa Ana Mts Comment
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Sep 23 2013
  RSA696478  Rhus ovata Anonymous 1933-5-6 s.n. Orange Black Star Canyon [county not specified] Comment
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Jun 10 2012
  SEINET10494685  Rhus ovata Melvin L. Conrad, David B. Dunn 1973-6-13 Conrad 7138 Orange In vicinity of Laguna Beach. Shrub about 4 ft tall. 152 Comment
  SD152831  Ribes californicum var. hesperium Steve Boyd, Tim Ross 1992-5-20 7460 Orange Southern Santa Ana Mts., San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon along canyon floor from crossing of Lucas Canyon Trail, upstream Ao mile to spur trail leading to old mining habitations in side canyon. 305 Comment
  RSA0024855  Ribes cereum Minor Warne 1934-2-23 s.n. Orange Santiago Canyon. Comment
  CAS-BOT-BC173125  Ribes indecorum B. D. Stark 1930-2-21 1475 Orange Black Star Creek 457 Comment
  PASA2253  Ribes indecorum Frank W. Peirson 1925-4-11 Orange Silverado Canyon, Santa Ana Mountains 914 Comment
  RSA608240  Ribes indecorum Steve Boyd, Bart O Brien 1998-1-13 10074 Orange Santa Ana Mountains: north end of the range, saddle between Mabey and Fremont canyons, along Main Divide Road ( 3S04) ca. 1.0 mi N of Oak Flat. 883 Comment
  UCR223417  Ribes indecorum Dick Newell, Don Millar 2011-2-8 050 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, top of Agua Chinon Canyon at head of Limestone Canyon 387 Comment
  CAS-BOT-BC168941  Ribes malvaceum B. D. Stark 1932-2-22 2662 Orange Rancho Santa Ana, Santa Ana Canyon, in canyon west of Roundtop Peak 457 Comment
  CAS-BOT-BC168942  Ribes malvaceum B. D. Stark 1932-12-30 4456 Orange Rancho Santa Ana, 1/4 mi. W. of Roundtop Peak 457 Comment
  CAS-BOT-BC402201  Ribes malvaceum R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49706 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  IRVC14219  Ribes malvaceum Gordon A. Marsh, K. Conrey 1975-2-19 s.n. Orange Santa Ana Mtns: Skyline Dr, just beyond Beek's Place heading S, just inside Cleveland NF. Peninsular Ranges 915 Comment
  LA205475  Ribes malvaceum var. viridifolium W. Pequegnat; 1938-4-16 sn Orange Santa Ana Mountains, Indian Truck Trail 853 Comment
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Aug 29 2015
  RSA1335  Ribes malvaceum var. viridifolium J. T. Howell 1929-2-11 1225 Orange Claymine Canyon, Santa Ana Mts. 305 Comment
  RSA1336  Ribes malvaceum var. viridifolium E. R. Johnson 1929-3-12 1250 Orange Canyon West of Roundtop Rancho Santa Ana. 457 Comment
  RSA184142  Ribes malvaceum var. viridifolium I. L. Wiggins 1966-2-4 20419 Orange Trabuco Canyon, about 1/2 mi. above canyon mouth Comment
  RSA3132  Ribes malvaceum var. viridifolium B. D. Stark 1932-2-22 2662 Orange Canyon W of Roundtop, Rancho Santa Ana. 457 Comment
  RSA441471  Ribes malvaceum var. viridifolium E. Crow 1929-2-22 213 Orange Gypsum Canyon, Santa Ana Mountains. Near Corona. Comment
  RSA84499  Ribes malvaceum var. viridifolium F. W. Peirson 1923-4-6 3504 Orange Santiago Peak, Santa Ana Mts. Holy Jim trail. 1143 Comment
  UCSB52466  Ribes malvaceum var. viridifolium Roberts, Fred; Steele, K. 1982-12-26 Orange South Laguna: Niguel Hill; near end of Sea Island Dr; 1.9km SE Aliso Peak; 1.2km E Bench Mark 133 210 Comment
  RSA0016149  Ribes roezlii Keith E. Hoffmaster 1932-4-17 519 Orange Santa Ana Mts. [Orange/Riverside Cos] Comment
  RSA0018262  Ribes roezlii Christopher Davidson 1977-5-18 5613 Orange Cleveland National Forest; Santiago Peak (on Orange-Riverside Co. line) 1707 Comment
  POM6324  Ribes speciosum P. A. Munz, L. T. Street 1919-5-4 2684 Orange Laguna Canyon. Comment
  RSA734161  Ribes speciosum Keith E. Hoffmaster 1931-4-22 520 Orange Santa Ana Mts. Comment
  UCR190971  Ribes speciosum A. C. Sanders, Fred M. Roberts 2008-4-22 35038 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  UCR98233  Ribes speciosum B. G. Pitzer 1997-4-15 3134 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
  UCSB9363  Ribes speciosum Lloyd, Robert 1959-4-17 Orange 10 miles south of West Corona on the Oak Flats Fire Rd; Santa Ana Mt. Range 792 Comment
  CHSC26237  Ricinus communis E. Bushey 1968-5-15 51 Orange San Juan Canyon Rd. 304 Comment
  RSA749353  Ricinus communis Fred M. Roberts 2008-4-15 6902 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
  UC192523  Ricinus communis S. B. and W. F. Parish October, 1882 1599 Orange near Anaheim Comment
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Jun 25 2012
  LA85195  Romneya coulteri O. H. Kappler; 1945-6-15 873 Orange Santa Ana Canyon Comment
  POM201689  Romneya coulteri L. M. Booth 815 Orange Santa Ana Canyon Comment
  RSA0014069  Romneya coulteri Fred M. Roberts 2008-5-30 7019 Orange Lomas de Santiago: Santiago Creek wash, south of Irvine Mesa, 1.5 km SE Silverado Sch., Irvine Ranch Conservancy. 326 Comment
  RSA2097  Romneya coulteri B. D. Stark 1931-5-18 2054 Orange Santa Ana River bottom, SW of Ranch Houses, Rancho Santa Ana. 122 Comment
  SDSU892  Romneya coulteri D. F. Howe 1976-6-4 4904 Orange Trabuca Canyon, Santa Ana Mtns. 305 Comment
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Sep 5 2013
  CAS-BOT-BC92179  Romneya coulteri var. coulteri John Thomas Howell 1927-7-24 2833 Orange Floor of Claymine Canon [Canyon], north Santa Ana Mountains. 152 Comment
  CAS-BOT-BC92182  Romneya coulteri var. coulteri J. Ewan 1929-6-28 3625 Orange Santa Ana Canyon above Santa Ana. 609 Comment
  POM393  Rorippa curvisiliqua P. A. Munz 1918-5-4 2208 Orange Laguna Canyon. Comment
  CDA23131  Rorippa nasturtium-aquaticum Mark A. Elvin, D. G. Kelch 2006-12-9 5293 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  JEPS53807  Rorippa nasturtium-aquaticum Alice King 1908-1 Orange Santa Ana 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
  RSA376  Rubus ursinus J. T. Howell 1927-7-6 280 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  UCR193809  Rubus ursinus A. C. Sanders, Fred M. Roberts 2008-7-16 35833 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, canyon c. 0.12 mi. below Dripping Spring, c. 7.5 mi. ESE of Tustin 360 Comment
  RSA734631  Rumex conglomeratus A. C. Sanders, T. B. Salvato 2008-5-13 35362 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  HSC17611  Rumex crispus C. L. Hitchcock, C. V. Muhlick 1964-3-17 23072 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  UCR258356  Rumex crispus Fred M. Roberts 2014-4-21 7858 Orange South Coast, SAN JOAQUIN HILLS: Upper Laguna Canyon, Laguna Lake 1 (Upper Laguna Lake), north basin, c. 5.1 km ENE summit Signal Hill. Laguna Coast Wilderness Park 113 Comment
  OBI41039  Rumex crispus Unknown, With Melissa Thorme 1983-11-23 20 Orange Adj to the S most housing tract in Corona Del Mar Comment
  RSA232221  Rumex crispus James Henrickson 1970-8-29 5313 Orange 3 mile NE of Huntington Beach in Pasture just N of Bolsa Chica Salt Marsh; 0 Comment
  RSA698483  Rumex hymenosepalus R. H. McArthur 1934-3-17 s.n. Orange Gypsum Canyon. Comment
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Dec 6 2008
  RSA539350  Rumex hymenosepalus Fred M. Roberts, Karlin G. Marsh 1989-3-7 4199 Orange Lomas de Santiago: Loma Ridge, Hicks Canyon, 2.3km W Bee Survey Mark. 152 Comment
  POM201764  Rumex maritimus L. M. Booth 1932-6-28 s.n. Orange Bolsas Marsh. Comment
  POM2357  Rumex maritimus P. A. Munz 1918-5-4 2197 Orange Laguna Lakes, Laguna. Comment
  RSA234530  Rumex maritimus James Henrickson 1970-7-25 5086 Orange 3.5 miles NW of Huntington Beach growing along graded inner slope of East Garden Grov-Wintersburg Flood Control Channel near Bolsa Chica Salt Marsh. 1 Comment
  UC536915  Rumex maritimus Lawrence M. Booth 1932-6-28 1220 Orange Bolsas Marsh Comment
  UCR107843  Rumex salicifolius Scott D. White 1998-3-24 6231 Orange Irvine. Univ. of Calif. Irvine Campus: Site of proposed Research Park. SW of main campus circle, c. halfway between Berkeley Av. and new freeway (Bonita Cyn) 37 Comment
  JEPS39862  Rumex salicifolius var. salicifolius Lawrence M. Booth 1932-7-4 1245 Orange Newport Bay Comment
  CHSC26520  Ruppia maritima James Henrickson 1970-7-24 5023 Orange 3 miles NW of Huntington Beach; in Inner Bolsa Bay. 0 Comment
  UCR219852  Sagina decumbens subsp. occidentalis Fred M. Roberts 1999-4-26 5201 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, ridge between Limestone Cyn and the Santiago Canyon Wash, 1.7 km SE Silverado School, 2.4 km north Bolero Lookout 411 Comment
  RSA478908  Salicornia bigelovii F. R. Fosberg 1931-8-19 7286 Orange Newport Bay. 0 Comment
  RSA689541  Salicornia bigelovii R. E. Riefner 2003-8-17 3 -335 Orange Costa Mesa, marsh along Santa Ana River, west of Talbert Regional Park. 11 Comment
  SD257245  Salicornia bigelovii R. E. Riefner Jr. 2003-12-6 03 502 Orange NAD 83; 11S, 0411758E, 3722979N. Costa Mesa, marsh along W side of Santa Ana River, W of 19th Street and Balboa Ave. 9 Comment
  RSA268  Salicornia virginica J. T. Howell 1927-10-29 788 Orange Bryant Ranch, near Long Beach. 15 Comment
  UCR211856  Salicornia virginica Valerie Soza, Kevin Clark, LeRoy Gross, Will Miller, Fred M. Roberts, G. D. Wallace 2001-4-4 1101 Orange South Coast, Seal Beach National Wildlife Refuge, Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226) 3 Comment
  RSA303450  Salicornia virginica J. R. Shevock 1970-10-19 519 Orange Newport Back Bay 5 Comment
  RSA478907  Salicornia virginica Anstruther Davidson 1902-09 s.n. Orange Newport Beach. Comment
  POM177842  Salix exigua Marcus E. Jones 1930-3-3 26532 Orange Santa Ana Mountains. Comment
  RSA703731  Salix exigua Fred M. Roberts, David E. Bramlet 2004-7-30 6091 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn. along Cristianitos Ck., 1.1 km SSW Gato Gate and 0.32km W Cristianitos Road. 73 Comment
  RSA731935  Salix exigua Fred M. Roberts, Sandra Leatherman 2007-11-27 6675 Orange Yorba Linda: Santa Ana Canyon, Santa Ana River wash, S of E La Palma Road near Via Lomas de Yorba Linda, about 0.6 km W Gypsum Cyn. bridge. 113 Comment
  RSA751524  Salix exigua A. C. Sanders, Fred M. Roberts 2008-8-7 35988 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  LA208640  Salix exigua var. hindsiana Carl B. Wolf; 1932-7-7 3845 Orange Rancho Santa Ana, along ditch on Bixby Ave., 1 km W of Hansen Rd, near town of Los Alamitos 7.5 Comment
  CAS-BOT-BC108136  Salix gooddingii Le Roy Abrams 1903-4-16 3256 Orange Santa Ana River, near Orange Comment
  RSA658950  Salix gooddingii Caralisa Breidenbaugh, Mark Breidenbaugh 1992-5-15 21 Orange 1/2 mile south of Chino Hills State Park. 168 Comment
  SBBG58903  Salix gooddingii C. B. Wolf 1932-4-8 2950 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Cyn 120 Comment
  UCR100182  Salix gooddingii Scott D. White 1993-5-5 1109 Orange Marine Corps Air Stn: SE of Red Hill Ave and NE of Barranca 15 Comment
  CAS-BOT-BC108205  Salix hindsiana Carl B. Wolf 1932-4-15 2954 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon 120 Comment
  LA208696  Salix laevigata Carl Hedin; Joseph Ewan 1933-3-19 7682 Orange Santa Ana River 8 km below Prado (Rincon) [Area 7] Comment
  UC498105  Salix laevigata L. M. Booth Dec. 1932 1380 Orange Newport Beach Comment
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Jun 19 2006
  UC506448  Salix laevigata Carl Hedin and Joseph Ewan 1933-3-19 7682 Orange Comment
  RSA793258  Salix lasiandra Robert F. Thorne 1984-1 s.n. Orange Newport Back Bay. Comment
  JEPS13843  Salix lasiolepis Alice King Feb., 1908 Orange Santa Ana River Comment
  POM122787  Salix lasiolepis Marcus E. Jones 1926-3-10 s.n. Orange Near Santa Ana Canyon. Comment
  POM122788  Salix lasiolepis Marcus E. Jones 1926-2-20 s.n. Orange East of Laguna. 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
  RSA184140  Salix lasiolepis I. L. Wiggins 1966-2-4 20417 Orange Watercourse near mouth of Trabuco Canyon.Waterfront St. near Mission Rock Terminal, San Francisco Comment
  RSA304942  Salix lasiolepis James R. Shevock 1970-12-20 569 Orange Newport Back Bay. 3 Comment
  RSA611261  Salix lasiolepis Louis C. Wheeler 1946-9-28 6379 Orange Newport Bay: 1/2 mile north of main coast highway. 2 Comment
  RSA700177  Salix lasiolepis R. H. McArthur 1934-2-8 s.n. Orange Santiago Creek at Bristol Comment
  RSA700178  Salix lasiolepis R. H. McArthur 1934-3-1 s.n. Orange Santa Ana River at 1st Street. Comment
  UCR237825  Salix lasiolepis Mark A. Elvin 2003-2-2 2279 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  CAS-BOT-BC128464  Salix lasiolepis var. lasiolepis Ira L. Wiggins 1966-3-22 20549 Orange Along stream bank, bottom of Silverado Canyon, about 5 mi above Ranger Station, Cleveland National Forest 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
  RSA725966  Salix lucida subsp. lasiandra R. E. Riefner 2006-10-4 06 -475 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lake Forest, Aliso Creek near Portola Parkway at El Toro Rd. 225 Comment
  RSA765880  Salix lucida subsp. lasiandra R. E. Riefner Jr. 2009-11-9 09 -243 Orange City of Yorba Linda, Santa Ana Canyon, Santa Ana River bottom, E of Weir Canyon Rd., between Horseshoe Bend and vicinity of La Palma Ave. and Mercado del Rio. 102 Comment
  UCR103711  Salpichroa origanifolia B. G. Pitzer, T. Tennant 1997-11-8 3367 Orange San Joaquin Hills, Crystal Cove State Park, along Moro Canyon Trail, from beginning to a point c. 1.75 mi. up the canyon. 85 Comment
  UCR222887  Salsola australis T. B. Salvato 2010-10-27 5111 Orange South Coast, Dana Point Headlands, Harbor Point Park, south of Scenic Dr. and Cove Rd., beyond the end of Green Lantern St., overlooking Dana Point Harbor 70 Comment
  CAS-BOT-BC176978  Salsola tragus Peter H. Raven 1957-9-28 11381 Orange At north limits of Surfside Comment
  IRVC418  Salsola tragus A. Adams 1965-5-2 Orange Newport Beach, Corona del Mar, Little Corona Beach. Southern Coastal Comment
  RSA184150  Salsola tragus I. L. Wiggins 1966-2-12 20436 Orange N. side of La Palma Ave. near Harbor Blvd., Anaheim. Comment
  RSA723482  Salsola tragus R. E. Riefner 2007-1-20 7 -16 Orange City of Lake Forest, along Bake Pwky. at Dimension Rd. 217 Comment
  RSA0095114  Saltugilia australis Clare B. Hardham 1962-4-5 8952 Orange Hills above San Clemente. Comment
  RSA562812  Salvia apiana Steve Boyd, T. S. Ross 1992-5-20 7484 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
  RSA0006683  Salvia apiana J. T. Howell 1927-6-1 5 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  RSA662  Salvia columbariae J. T. Howell 1928-3-18 891 Orange Rancho Santa Ana, Botanic Garden. 152 Comment
  UCR215306  Salvia columbariae Fred M. Roberts, Eliza L. Maher 2008-3-26 6795 Orange South Coast, Dana Point; Dana Point Headlands, Center for Natural Lands Mgmt. Preserve, 0.8 km west of Marine Institute, Dana Point Harbor 60 Comment
  RSA659990  Salvia columbariae Steve Teh 1994-4-28 11 Orange Modjeska Grade rd. 3/4 mile back on fire rd. Comment
  UCD125511  Salvia dorrii var. dorrii G. H. Vansell 1933-6-30 s.n. Orange location unknown. Comment
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Sep 26 2020
  CAS-BOT-BC233674  Salvia leucophylla Carl B. Wolf 1932-6-2 3701 Orange Rancho Santa Ana between Administration Bldg. and tennis court, Santa Ana Canyon 198 Comment
  RSA0019002  Salvia leucophylla Steve Boyd, S. G. Jett, Valentin Arvizu 2008-4-24 11895 Orange About 0.25 mile outside of service gate in to Irvine Regional Park, north of Irvine Ranch Reservoir (Santiago Reservoir). 213 Comment
  SD43536  Salvia leucophylla Carl B. Wolf 1943-6-8 11449 Orange Rancho Santa Ana Botanic Garden; on dry brushy hillside. 198 Comment
  CAS-BOT-BC233669  Salvia leucophylla C. B. Wolf 1943-6-8 11449 Orange Rancho Santa Ana Botanic Garden 198 Comment
  RSA294797  Salvia mellifera Lyman Benson 1946-5-13 12098 Orange Corona del Mar, Pacfic Ocean drainage area 50 Comment
  RSA658202  Salvia mellifera T. A. Daubert 1991-5-19 652 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  UCR230238  Salvia mellifera Dick Newell, Don Millar 2011-3-15 087 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
  RSA0034529  Salvia mellifera Paul Shirokawa 1998-4-24 7 Orange Cleveland National Forest - Trabuco Ranger District, 2.9 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 975 Comment
  RSA131655  Sambucus caerulea E. K. Balls 1958-6-27 23289 Orange Santiago Peak, below tower lookout, Santa Ana Mountains. 1662 Comment
  CSUSB696  Sambucus mexicana Cesareo Perez 1971-5-4 Orange South Mesa Drive and Lemon Street in Villa Park Comment
  IRVC337  Sambucus mexicana H. R. Williams 1966-6-21 611 Orange San Diego Creek at Sand Canyon Road; roadside near cultivated field. Irvine Comment
  POM201930  Sambucus mexicana L. M. Booth 1932-5-27 s.n. Orange Newport Bay. Comment
  RSA587877  Sambucus mexicana Fred M. Roberts 1990-5-8 4624 Orange Chino Hills: Soquel Canyon, ca. 1.4km Nof Gilman Peak. 335 Comment
  RSA650821  Sambucus mexicana Daniel Truong 1991-5-13 6 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  HSC3988  Sambucus nigra subsp. caerulea J. W. Johnson 1961-3-29 Orange Newport Beach, slope overlooking Upper Newport Bay. Comment
  RSA69001  Samolus parviflorus F. W. Peirson 1924-10-19 s.n. Orange Wintersberg Comment
  UCR209331  Sanicula arguta Fred M. Roberts 2009-4-11 6888 Orange Lomas de Santiago, Loma Ridge, upper Dripping Springs Canyon, 0.9 km northeast of Bee Peak and 1.2 km west-northwest of Dripping Springs 448 Comment
  UCR209361  Sanicula arguta Fred M. Roberts, D. E. Bramlet 2008-4-1 6837 Orange Lomas de Santiago, Loma Ridge, East Lomas Ridge Road along crest, 3.2 km northwest of Bee Peak and 3.4 km northeast of Rattlesnake Reservoir Dam, Irvine Ranch Conservancy 388 Comment
  UCR220955  Sanicula arguta Dick Newell, Don Millar 2010-3-16 012 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, above Agua Chinon at Box Canyon Rd, 2.81 miles north of Hwy 241 toll road and 2.77 miles east of 133 toll road 427 Comment
  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
  POM3415  Sanicula crassicaulis I. M. Johnston 1918-5-4 276 Orange Hills back of Laguna Beach. 152 Comment
  UC1006699  Sanicula crassicaulis C. Ritchie Bell 1953-2-22 1387 Orange near sw edge of San Clemente State Park, above old dam San Clemente State Park Comment
  IRVC22550  Sanicula crassicaulis var. crassicaulis Fred M. Roberts 1985-5-1 1706 Orange Aliso Canyon, 2.1km NNE Aliso Peak, Aliso Viejo 67 Comment
  UCSB48363  Sanicula tuberosa Roberts, Fred 1982-4-18 Orange Santa Ana Mtns.; upper Hot Springs Canyon, 0.1 km. SW Falcon Group Camp; 2.0 km. SE Los Pinos Peak 1075 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
  SD253898  Schinus molle Jim Riley 2013-12-10 137 Orange San Clemente area; 0.29 miles E intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 74 Comment
  RSA793257  Schoenoplectus americanus Robert F. Thorne 1984-1 s.n. Orange Newport Back Bay Comment
  CAS-BOT-BC111263  Schoenoplectus californicus Ivan Murray Johnston 1918-9-3 2147 Orange Laguna Canon 106 Comment
  POM18286  Schoenoplectus californicus I. M. Johnston 1924-7-10 s.n. Orange Laguna Canyon. Comment
  RSA0027438  Schoenoplectus californicus Fred M. Roberts 2012-7-18 7672 Orange San Joaquin Hills: Newport Beach, Buck Gully, Buck Gully Trail, west end, just east of north terminus, of Poppy Street and 2.1 km WNW summit of Pelican Hill. 37 Comment
  RSA184313  Schoenoplectus californicus L. M. Booth 1932-8-4 s.n. Orange Santa Ana River, one mile from sea - sea level. 0 Comment
  RSA232214  Schoenoplectus californicus James Henrickson 1970-7-24 4985 Orange 2 miles NW of Huntington Beach around small freshwater industrial pond at eastern margin of Bolsa Chica Salt Marsh along Huntington Beach Mesa. 0 Comment
  RSA234495  Schoenoplectus californicus James Henrickson 1970-9-5 5330 Orange 3 miles NE of Huntinton Beach just N of Bolsa Chica Salt Marsh. Sea level. 0 Comment
  RSA91578  Schoenoplectus maritimus F. W. Peirson 1925-4-12 5749 Orange Laguna Canyon, Laguna Beach. 107 Comment
  RSA21060  Scirpus acutus var. occidentalis Ramon Valverde 1938-8-4 9444 Orange Rancho Santa Ana, Santa Ana Canyon 122 Comment
  JEPS75309  Scirpus americanus L. M. Booth 1932-5-24 1103 Orange Newport Bay Comment
  UC729885  Scirpus californicus Carl B. Wolf 1932-7-7 3862 Orange Bryant Ave. 1/2 mi e Los Alamitos Blvd. (near the town n side of road, opposite Bryant Ranch); Bryant Ranch Comment
  IRVC29874  Scirpus cernuus Mark A. Elvin, D. Kelch 2006-12-9 5302 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
  UCR193764  Scirpus cernuus A. C. Sanders, Fred M. Roberts 2008-7-3 35708 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  RSA769338  Scrophularia californica E. W. Lathrop 1974-6-27 7413 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  UC1125690  Scrophularia californica A. Lewis Apr 1934 385 Orange Silverado Canyon; Cleveland Nat'l Forest, Corona Quadrangle Comment
  UCR231159  Scrophularia californica Dick Newell, Don Millar, Shara Harris 2011-6-21 190 Orange Peninsular Range; Santa Ana Mtns., mouth of Fremont Canyon near Irvine Lake dam spillway 231 Comment
  CAS-BOT-BC61963  Selaginella John Thomas Howell 1927-7-24 2834 Orange side of Calymine Canyon, n. Santa Ana Mts. 152 Comment
  UCSB52471  Selaginella bigelovii Roberts, Fred 1983-1-7 Orange Laguna Beach: west flank of Temple Hill, Park Canyon, 1.7km NE Thurston High School; 1.7km SE Bench Mark 104. 230 Comment
  RSA594877  Selaginella bigelovii Fred M. Roberts, Rick Riefner 1992-2-15 4832 Orange Lomas De Santiago: Foothill Ranch north of El Toro Road, c. 4.7 kilometers SSE Bolero Lookout. 295 Comment
  RSA650644  Senecio californicus D. E. Bramlet 2000-4-7 2948 Orange Upper Blind Canyon. The site is found beside the SCE maintenance road and 762m west of the mainstem of Blind Canyon. This locality is 1.7km east of Weir Canyon. 354 Comment
  RSA737542  Senecio californicus Fred M. Roberts 2008-3-12 6719 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA749849  Senecio californicus D. Bramlet, Jim Harrison 2008-4-3 4148 Orange South Bee Canyon, Bowerman landfill site. 1.2 km S of the Bee Cyn. access road, and 122 m W of the active landfill. Comment
  LA203927  Senecio flaccidus var. douglasii W. E. Pequegnat; 1937-8-25 sn Orange Santa Ana Mountains, near Hyla (?) Stream Comment
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Jan 26 2015
  UCR130261  Senecio linearifolius Robert Noll 2003-9-15 s.n. Orange Southern Coastal region, Irvine, UCI campus, near intersection of Culver and Shady Canyon Roads 76 Comment
  SD218294  Senecio lineatus Mark A. Elvin 2003-8-24 3011 Orange San Joaquin Hills, Irvine, UCI, 100m north of the intersection of Shady Canyon Drive and Bonita Canyon Road. 71 Comment
  UCR192452  Senecio vulgaris A. C. Sanders, Fred M. Roberts 2008-3-25 34578 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
  SEINET3562515 Image available Setaria Janet Wingate 1994-4-2 s.n. Orange Garden Grove Boulevard and Beach Boulevard, Garden Grove. Comment
  RSA723480  Setaria megaphylla R. E. Riefner 2005-10-27 5 -731 Orange City of Huntington Beach, Huntington Central Park near Goldenwest St. 1 Comment
  POM202735  Setaria parviflora L. M. Booth 1932-7-18 1264 Orange Costa Mesa, Newport Bay Comment
  UCR236679  Setaria parviflora Fred M. Roberts, Sandra L. Leatherman 2008-9-17 7101 Orange Peninsular Ranges, Santa Ana River Canyon: Yorba Linda Regional Park adjacent to Santa Ana River, South of La Palma Ave. and 1.7 km ENE Imperial Hwy. bridge over river 87 Comment
  CAS-BOT-BC243633  Setaria pumila J. B. Anderson 1966-5-2 621 Orange Along Newport Freeway at 17th Street, 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
  RSA542393  Sidalcea malviflora Fred M. Roberts, K. Keane 1988-5-25 3982 Orange Ranch Mission Viejo: Lower Canada Chiquita, 2.5 kilometers SSE Medium Rancho Survey Mark. 82 Comment
  RSA17560  Sidalcea neomexicana subsp. thurberi Carl B. Wolf 1936-4-22 7770 Orange East of Los Alamitos, at NW corner of Hansen Rd. and Bryant Ave. 15 Comment
  CAS-BOT-BC434368  Sidotheca trilobata P. C. Everett 1935-6-19 7224 Orange Santa Ana Mts., main divide motorway 1 5/10 mi. below summit of Santiago Peak, E. slope 1310 Comment
  RSA734348  Silene antirrhina A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34641 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 396 Comment
  IRVC25469  Silene gallica Fred M. Roberts 1987-4-21 3778 Orange Aliso Creek, Aliso Creek Bike Trail, 3.0km ENE Moulton Peak, Aliso Viejo 73 Comment
  RSA683063  Silene gallica Fred M. Roberts 2003-3-19 5611 Orange Donna O Neill Land conservancy: Tributary W of Cristianitos Cyn., 1,625m NNW Sycamore Gate and 483m W Cristianitos Rd. 174 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
  UCR281559  Silene gallica Mitch Provance, Jeremiah George 2017-3-20 317- 112 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
  UCSB47971  Silene gallica Roberts, Fred 1980-2-17 Orange Dana Bluffs; along Scenic Drive Rd.; NW and above Dana Point Harbor, Dana Point 58 Comment
  RSA704077  Silene laciniata D. E. Bramlet 2004-5-27 3595 Orange Donna O Neill Reserve. Southwest corner of the reserve, just east of the Telaga development. The site is 1.43km west of Cristianitos Rd. and 1.37km north of Pico. 183 Comment
  IRVC21393  Silene laciniata subsp. major A. S. Boughey 1968-7-9 413 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  RSA288  Silene laciniata subsp. major J. T. Howell 1927-6-26 217 Orange Claymine Canyon near Sierra Peak 305 Comment
  RSA659992  Silene laciniata subsp. major Steve Teh 1994-5-20 27 Orange Modjeska Grade rd. 1/2 mile on trail above fire road. Comment
  UCR232770  Silene multinervia Robt. L. Allen, Trisha Smith, Mike Kahle 2006-6-21 s.n. Orange Peninsular Range; Santa Ana Mtns., upper Fremont Canyon, ridge along SE, along unpaved Lakeview Rd. 638 Comment
  SEINET219313  Silene verecunda P. C. Everett 1935-6-18 Orange Santa Ana Mountains summit of Santiago Peak. 1731 Comment
  CAS-BOT-BC75239  Sisymbrium irio Ira L. Wiggins 1966-2-19 20457 Orange Carbon Canyon near Orange County Survey bench mark RCE 7872. Comment
  RSA0127611  Sisymbrium officinale Fred M. Roberts 2016-4-26 8042 Orange Lomas de Santiago: South of Santiago Canyon Road in tributary to Lower Presida Canyon just southwest of Irvine Lake, 2.2 km S Irvine Lake dam spillway and 0.6 km SW Irvine Lake Park. 265 Comment
  RSA732236  Sisymbrium officinale A. C. Sanders, Fred M. Roberts 2008-4-22 35047 Orange Lomas de Santiago, slopes of south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado. 457 Comment
  RSA304200  Sisyrinchium bellum James R. Shevock 1970-3-25 65 Orange Santa Ana Mountains. 366 Comment
  RSA366971  Sisyrinchium bellum M. B. Dunkle 1938-3-26 5232 Orange San Juan Canyon 30 Comment
  UCR192085  Sisyrinchium bellum A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35299 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  UCSB9450  Sisyrinchium bellum Lloyd, Robert 1959-4-17 Orange Santa Ana Mtn Range; 10 miles south of West Corona on the Oak Flats Fire Road 792 Comment
  RSA651593  Sisyrinchium bellum D. Geisinger, R. Miller, E. Baldwin 1959-3-19 s.n. Orange Santa Ana Canyon Comment
  UC536954  Solanum americanum Lawrence M. Booth 1932-6-28 1213 Orange Bolsas Marsh Comment
  UCR217467  Solanum americanum Mark A. Elvin 2003-2-23 2314 Orange South Coast, Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  UCR240197  Solanum americanum C. J. Minar 1994-4-16 02 Orange South Coast, Santa Ana, on the bank of Santiago Creek, 0.25 mi. east of Santiago St. and 0.25 mi. west of Amtrack RR bridge, east of I-5 Fwy & south of Garden Grove (22) Fwy 50 Comment
  UCSB17923  Solanum americanum Gerhart, Janet 1963-2-22 Orange Trabuco Canyon, 1/2 miles above locked gate on dirt road, 17.5 miles east of U.S. Highway 101 at El Toro Marine Base 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
  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
  UCD126941  Solanum douglasii A. C. Sanders 1990-10-6 10198 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Hwy 1. 1 Comment
  UCR228772  Solanum elaeagnifolium Dick Newell, Don Millar 2011-7-19 203 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon Rd. east of Augustine Staging Area 282 Comment
  POM311835  Solanum lanceolatum Karen Hosterman 1957-1-19 825 Orange Laguna Beach City, near cultivated area. 11 Comment
  CAS-BOT-BC156709  Solanum umbelliferum P. A. Munz; L. T. Street; Williams 1919-5-3 2650 Orange Santa Ana River [Canon] Canyon Comment
  CAS-BOT-BC156711  Solanum umbelliferum C. B. Wolf 1931-3-6 1850 Orange 1/2 [milea] miles below Trabuco Camp Ground, Trabuco Canyon, west slope of the Santa Ana Mts. 609 Comment
  POM212351  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
  RSA733735  Solanum umbelliferum Jeanne Paxton 1934-2-25 s.n. Orange Sugar Loaf Canyon, Arch Beach Comment
  RSA80386  Solanum umbelliferum F. W. Peirson 1925-4-10 5737 Orange In Silverado Canyon. 610 Comment
  RSA792354  Solanum xanti Doris Bowers 1971-4-19 1685 Orange Black Star Canyon Indian Site 762 Comment
  UCR241065  Solanum xanti Dick Newell, Don Millar 2013-3-5 317 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Ridge Rd., 1/4 mi. east of Limestone Canyon Rd. 402 Comment
  RSA752812  Solidago californica A. C. Sanders, Fred M. Roberts 2008-8-7 35998 Orange middle section of Weir Canyon, 1.15 mi. (air) SSE of Walnut Canyon Reservoir 225 Comment
  RSA753970  Solidago californica A. C. Sanders, Fred M. Roberts 2008-7-16 35853 Orange Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  RSA788807  Solidago californica R. F. Thorne 1977-11-21 49980 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp Comment
  UCR231350  Solidago californica A. C. Sanders, Kent Beaman 2011-9-27 39899 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail above Silverado, at major (dry) stream crossing, 3.95 km NNW (347 deg. ) of Santiago Peak 903 Comment
  RSA0055824  Solidago californica Doris Bowers 1970-10-26 1709 Orange Black Star Can. Indian site 610 Comment
  SD239624  Solidago velutina subsp. californica A. C. Sanders, T. B. Salvato, Kent Beauman 2011-11-3 39940 Orange Peninsular Range; Santa Ana Mountains: near Pleasants Peak along the Main Divide Truck Trail (Corona South 7.5'Q) 1143 Comment
  CDA7681  Sonchus arvensis subsp. arvensis E. Johnson, Goodwin 1939-1 Orange 0 Comment
  RSA798089  Sonchus asper R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49582 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  CAS-BOT-BC374663  Sonchus oleraceus Ira L. Wiggins 1966-5-25 20668 Orange Parkway along south side of Nutwood Lane, margin of CSCF campus, Fullerton Comment
  RSA732175  Sonchus oleraceus A. C. Sanders, Fred M. Roberts 2008-3-25 34545 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA696190  Sonchus oleraceus Keith E. Hoffmaster 1928-3-9 s.n. Orange Santa Ana Comment
  UCD136209  Sonchus oleraceus Ira L. Wiggins 1965-11-6 20334 Orange west side of Atwood. Comment
  RSA719412  Sorghum bicolor Fred M. Roberts, Robert L. Allen 2006-10-8 6433 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  IRVC24181  Sorghum halepense Fred M. Roberts 1985-9-17 2258 Orange Irvine; lot between Walnut Avenue, Harvard Avenue and Peter's Creek Channel. southern coastal 20 Comment
  RSA699060  Sparganium eurycarpum J. Russell Bruff 1932-4-14 s.n. Orange Drainage Ditch, Greenville. So of Santa Ana. Comment
  IRVC29761  Spartina foliosa Barry S. Nerhus, Mark A. Elvin 2006-11-4 14 Orange Huntington Beach, Bolsa Chica Wetlands, SW portion of Reserve beside Pacific Coast Highway. Southern Coastal 0 Comment
  OBI22235  Spartina foliosa Peter H. Raven 1957-9-28 11379 Orange N limits of Surfside Comment
  RSA483174  Spartina foliosa Anonymous 1914-7-6 31 Orange Growing in salt marsh at Newport Comment
  SD109539  Spartina foliosa C. Davidson 1970-7-27 1505 Orange Bolsa Chica Salt Marsh, 1 mile south of Warner Ave., opposite Seal beach Comment
  UCR2764  Spartina foliosa F. M. Reed 1927-11-23 5676 Orange South Coast, Anaheim Landing 1 Comment
  SD152845  Spartium junceum Steve Boyd, Tim Ross 1992-5-20 7459 Orange San Mateo Canyon Wilderness Area; western edge of the wilderness in Lucas Canyon. 305 Comment
  SEINET10452464  Spartium junceum James S. Miller 1992-5-8 Miller 7449 Orange 2 mi E of the border of Cleveland National on California route 74. 310 Comment
  CDA3452  Spergula arvensis E. Dudley 1957-3-25 Orange Irvine ranch. 0 Comment
  CLARK-A1528-975  Spergularia bocconi Patricia A. Andrews 1975-6-26 5929 Orange Capistrano Bay Beach 9 Comment
  CAS-BOT-BC390858  Spergularia marina Munz; Street; Williams 1919-5-4 2682 Orange Laguna Canon [Canyon] Comment
  RSA0098514  Spergularia marina Valerie Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary Wallace 2001-4-4 1122 Orange Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  RSA0098516  Spergularia marina Elroy Robinson 1936-6-26 s.n. Orange El Torro, along Santa Fe Railway. Comment
  RSA478077  Spergularia rubra Albert J. Perkins 1922-5-27 s.n. Orange Dr. Whi...(?) garden Comment
  HSC92517  Spergularia salina D. Atwood 1993-3-29 17734 Orange Huntington Beach along Beach Blvd., 0.5 mi. N of the beach Comment
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Jul 8 2010
  RSA5953  Sporobolus airoides C. B. Wolf 1932-7-7 3848 Orange Bixby Ave., 0.7 mile W of Hansen road (0.2 mile W of SE corner of NE/4 of NW/4) T4S R11W S34 8 Comment
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Apr 10 2014
  RSA68  Sporobolus airoides J. T. Howell 1927-6-21 181 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  SEINET3109888  Sporobolus airoides Carl B. Wolf 1936-4-22 Orange Hansen Rd., near Cerritos Ave., E of Los Alamitos. 15 Comment
  CDA14320  Sporobolus indicus F. Covely 1998-8-3 s.n. Orange South Coast; Vampus of Huntington Beach U.H.S.D., 525 Yorktown Ave., Huntington Beach. 0 Comment
  CDA20477  Sporobolus indicus M. Sulsona 2004-5-19 PDR 1256361 Orange Southwestern California; Woodbury School in Garden Grove. 0 Comment
  UC284865  Stachys ajugoides var. rigida P. A. Munz 1923-9-7 7756 Orange trail from Holy Jim Canyon Santiago Peak; Santa Ana Mts. 1310 Comment
  UC421601  Stachys ajugoides var. rigida John Thomas Howell 1927-7-3 2644 Orange Claymine Canyon Santa Ana Mtns Comment
  UC1871282  Stachys ajugoides var. rigida Steve Boyd, D. L. Banks 1969-12-31 8276 Orange Peninsular Ranges; Santa Ana Mountains region; Southern Santa Ana Mountains along the ridgeline between Lucas and Verdugo Canyons west of Verdugo Potrero, near transit point ''Lucas''. T7S R6W SW1/4 NW1/4 sec. 16. Elevation ca. 1400 ft. 427 Comment
  RSA0012748  Stachys rigida subsp. quercetorum Fred M. Roberts 2012-5-10 7573 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
  SEINET9364763  Stachys stebbinsii A. Sanders, Balk, Michelle 2006-7-20 33018 Orange Peninsular Range; Santa Ana Mtns.: San Juan Canyon, from Lower San Juan Picnic Area to ca. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line (Sitton Peak 7.5' topo.) Canyon bottom; moist rocky sand and flowing water; oak riparian forest with Quercus agrif., Platanus rac., Salix laev., S. las., Baccharis salic., Rubus ur., Vitis gird., Artemisia doug., etc. Comment
  CAS-BOT-BC393823  Stellaria media Ira L. Wiggins 1966-2-25 20475 Orange Firestone Boy Scout Reservation, in hills E of Brea Comment
  UCR191016  Stellaria media A. C. Sanders, Fred M. Roberts 2008-4-22 35033 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  POM7319  Stenotaphrum secundatum Fred M. Roberts, Sandy Leatherman 2007-11-27 6669 Orange Yorba Linda: Santa Ana Canyon, Santa Ana River wash, S of E La Palma Road near Via Lomas de Yorba Linda, about 0.6 km W Gypsum Cyn. bridge. 113 Comment
  UCR13409  Stenotaphrum secundatum William A. Hunt 1972-4-9 720409- 02 Orange South Coast, San Clemente, San Clemente Beach State Park, day use area, bluffs directly overlooking Pacific Ocean 15 Comment
  POM172035  Stenotaphrum secundatum F. M. Reed 1929-12-19 6711 Orange Arch Beach, Laguna Comment
  UCD136245  Stephanomeria diegensis L. D. Gottlieb 1968-8-14 6860 Orange on Route 74, immediately west of Lower San Juan Campground. 411 Comment
  JEPS36875  Stephanomeria exigua subsp. coronaria L. M. Booth 1932-6-17 1205 Orange Bolsa Chica Comment
  CAS-BOT-BC375866  Stephanomeria virgata Joseph Andorfer Ewan 1932-7-28 7706 Orange Seaward bluffs at Corona del Mar Comment
  IRVC21311  Stephanomeria virgata subsp. virgata Fred M. Roberts 1983-12-9 1153 Orange UCI Ecological Preserve, 0.8km SSW campus center, Irvine 70 Comment
  UCR281587  Stephanomeria virgata subsp. virgata Mitch Provance 2017-6-9 617- 89 Orange Coyote Hills, North Fullerton, East side of Gilbert St., 0.25 miles NNE of intersection with Castlewood Dr. 164 Comment
  SD245219  Stipa coronata R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49617 Orange Santa Ana Mountains: about 1 mile above San Juana Fire Station. Dry, rocky bluffs above San Juan Creek. Comment
  RSA588651  Stylocline gnaphaloides Fred M. Roberts, Carol A. Roberts 1990-5-23 4659 Orange Santa Ana Mts.: West Fork, Upper Long Canyon, Main Divide Truck Trail, 4.3 km SE Los Pinos Peak. 753 Comment
  UC1564711  Styrax officinalis var. redivivus Reid Moran with Daniel Axelrod and Bob Smart 1975-7-18 22599 Orange n slope of ridge upper Trabuco Canyon (Santa Ana Mountains); , n slope of ridge, upper Trabuco Canyon 900 Comment
  SD245496  Styrax redivivus Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49598 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  RSA5857  Suaeda calceoliformis C. B. Wolf 1932-6-28 3786 Orange Edge of field on Bryant Ave. 9 Comment
  CAS-BOT-BC110386  Suaeda esteroa Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA263901  Suaeda esteroa C. W. Tilforth 1975-9-6 1044 Orange Upper Bay, Newport Beach: North-east shoreline Comment
  UCD145368  Suaeda esteroa Louis C. Wheeler 1946-9-28 6385 Orange Newport Bay. Comment
  RSA5956  Suaeda moquinii C. B. Wolf 1932-7-7 3850 Orange Bryant Ranch, 600 ft. N of Bixby Ave., 1 mi. W. of Hansen Road., (600 ft. N and 100 ft. W. of S.E. corner of N.E. 1/4 of N.E. 1/4 of Sect. 33) Comment
  UC536965  Suaeda nigra Lawrence M. Booth 1932-7-4 1247 Orange Newport Lagoon Comment
  JEPS59882  Suaeda taxifolia Lawrence M. Booth 1932-8-5 1364 Orange Newport Bay Comment
  POM17616  Suaeda taxifolia P. A. Munz 1923-4-2 7320 Orange Laguna Beach Comment
  UCR240097  Suaeda taxifolia Dick Newell 2012-9-29 299 Orange South Coast, Newport Beach, Back Bay Drive at Big Canyon parking area 2 Comment
  UCSB48379  Suaeda taxifolia Roberts, Fred 1982-4-20 Orange Anaheim Bay: Calif. Rte. 1 at southern margin of Seal Beach Naval Weapons Station; 1.7 km. SE McGaugh School; 1.1 km. W Hog Island Comment
  RSA696584  Symphoricarpos mollis R. H. McArthur 1934-4-7 s.n. Orange Ladd Canyon. Comment
  RSA798548  Symphoricarpos parishii R. F. Thorne, E. W. Lathrop 1977-5-18 49751 Orange Santa Ana Mountains: below summit of Santiago Peak Comment
  RSA696575  Symphoricarpos rotundifolius Anonymous s.n. Orange Santa Ana Comment
  RSA789199  Symphyotrichum defoliatum Naomi Fraga, Duncan S. Bell, Sarah J. De Groot 2009-9-11 3155 Orange Santa Ana Mountains, Blue Jay Campground. 910 Comment
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Jan 29 2015
  UCR258868  Symphyotrichum defoliatum Naomi Fraga, Duncan S. Bell, Sarah J. De Groot 2009-9-11 3155 Orange Peninsular Ranges; Santa Ana Mountains region, Blue Jay Campground 910 Comment
  JEPS31960  Symphyotrichum subulatum J. Thomas Howell 1927-9-24 3116 Orange Rancho Santa Ana Santa Ana River (bottom) 152 Comment
  UC729508  Symphyotrichum subulatum Carl B. Wolf 1932-9-16 4114 Orange 500 ft e of San Gabriel River (bordering Los Alamitos Bay); , Los Alamitos Bay 1 Comment
  JEPS31962  Symphyotrichum subulatum L. M. Booth 1932-8-5 1356 Orange Bolsas Creek Comment
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Feb 3 2016
  CAS-BOT-BC98280  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1927-9-24 3116 Orange Santa Ana River bottom, Santa Ana Canyon [Canon] 152 Comment
  SD87612  Symphyotrichum subulatum var. parviflorum F. W. Peirson 1924-10-19 5240 Orange Wintersberg Comment
  RSA719410  Tamarix ramosissima Fred M. Roberts, Robert L. Allen 2006-10-8 6425 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
  RSA696192  Taraxacum officinale Keith E. Hoffmaster s.n. Orange Santa Ana Comment
  RSA221027  Tauschia arguta E. W. Lathrop 1966-3-23 6097 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA538  Tauschia arguta J. T. Howell 1927-6-26 220 Orange Claymine Canyon near Sierra Peak 366 Comment
  MACF017377  Taxodium distichum Trudy R. Ericson 1974-6-13 164 Orange Little Cypress Road at edge of Little Cypress Bayou about 60 ft. from edge of road, about 6 mi. east of Orange Comment
  RSA734694  Tetradymia comosa A. C. Sanders, Fred M. Roberts 2008-6-17 35501 Orange Weir Canyon, Windy Ridge Rd., saddle on ridge at head, above the Eastern Transportation Corridor 400 Comment
  RSA960  Tetradymia comosa J. T. Howell 1927-6-24 470 Orange Claymine Canyon, near Sierra Peak 183 Comment
  CAS-BOT-BC392294  Thalictrum fendleri Le Roy Abrams 1901-6-1 1829 Orange Santiago Pk. Comment
  RSA542416  Thalictrum fendleri Fred M. Roberts, Karlin G. Marsh 1987-5-14 3441 Orange Santa Ana Moutains: Upper Trabuco Canyon, Trabuco Canyon Trail , 1.3 km NE Los Pinos Peak 1231 Comment
  CDA7704  Thelesperma megapotamicum E. Johnson 1944-10-3 Orange Jessie L. Toler Ranch, La Habra. 0 Comment
  CDA7722  Thelesperma megapotamicum E. L. Paddock Aug 1942 Orange Jessie Lee Toler Ranch, north side of Ocean Avenue at Cajon Drive, La Habra. 0 Comment
  CAS-BOT-BC66958  Thysanocarpus laciniatus Helen D. Geis 1902-5-1 s.n. Orange Santiago Canyon. Comment
  RSA0041630  Thysanocarpus laciniatus Anonymous 1930-4-13 s.n. Orange Foot of Modjeska Trail. Comment
  RSA562757  Torilis nodosa Steve Boyd 1992-5-19 7433 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucan Canyo