Search Results — 2000 specimen records retrieved (1610 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC229406  Abronia umbellata Marcus E. Jones 1924-8-26 s.n. Orange Newport Comment
  RSA0025969  Abronia villosa Dorothy Parsons 1932-3-28 s.n. Orange Buena Park Road. Comment
  UC1930976  Abutilon palmeri R. E. Riefner Jr. 2006-9-5 06 -418 Orange Southern Coast: Corona del Mar, Ocean Blvd. near Iris Ave. Comment
  SEINET10484225  Acacia David B. Dunn 1971-8-13 Dunn 18129 Orange Mimosaceae. Cultivated plants vicinity of Laguna Beach, California. Comment
  RSA0028022  Acacia longifolia Fred M. Roberts 2012-9-6 7695 Orange San Joaquin Hills: Buck Gully, Buck Gully Trail, west end near Poppy Street entrance, 2.1 kilometers WNW Pelican Hill summit. 37 Comment
  UCR186429  Acacia redolens Robert DeRuff 1996-3-14 497 Orange Southern Coast, Newport Beach, Newport Back Bay, Big Canyon 3 Comment
  CAS-BOT-BC333254  Acer macrophyllum Le Roy Abrams 1901-6-15 1819 Orange South Fork Santiago Creek 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
  UCR192219  Achillea millefolium A. C. Sanders, Fred M. Roberts 2008-5-6 35271 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 379 Comment
  RSA33592  Achillea millefolium var. californica N. C. Cooper 1944-6-4 1345 Orange San Juan Canyon. 305 Comment
  RSA548876  Achnatherum coronatum Fred M. Roberts, T. Sholars, B. Stechmeyer 1988-3-29 3886 Orange Santa Ana Mountains: Hot Springs Canyon, 1.3 km north Hwy 74 by road , 0.7 km NW Juan Rancho Survey Marker., UTM 3717900m N, 452700m E 274 Comment
  RSA734282  Achnatherum coronatum A. C. Sanders, Linda Farley, Fred M. Roberts, David E. Bramlet 2008-4-1 34645 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 250 Comment
  RSA734601  Achnatherum coronatum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35310 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  UCSB47975  Acmispon glaber Roberts, Jr., Fred 1980-2-17 Orange Along Dana Strand road on the north side, on the bluff west of Dana Marina, Dana Point 56 Comment
  LA48025  Acmispon glaber var. glaber Robert G. Engman; sn Orange Dana Point Comment
  SD212599  Acmispon heermannii var. heermannii A. C. Sanders, Fred M. Roberts and Michelle Balk 2006-7-20 33005 Orange Santa Ana Mountains; San Juan Canyon from Lower San Juan Picnic Area to ca. 1.0 mile downstream, parallel to Highway 74 and near Riverside County line. 366 Comment
  IRVC20809  Acourtia microcephala Fred M. Roberts 1982-6-30 711 Orange Pacific Island Drive, 2.0km SE Aliso Peak; 1.3km E Bench Mark 133, Laguna Niguel 130 Comment
  RSA750003  Adenostoma fasciculatum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35319 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  RSA790699  Adenostoma fasciculatum Kenneth Beard 6 Orange Silverado Canyon. Comment
  RSA357  Adenostoma fasciculatum var. fasciculatum J. T. Howell 1928-4-15 919 Orange East boundary of the Rancho Santa Ana 229 Comment
  RSA5304  Adenostoma fasciculatum var. fasciculatum Carl B. Wolf 1932-12-19 1697 Orange Main divide of Santa Ana Mts. between Sierra Peak and Skyline Drive. 762 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
  CDA1085  Adiantum capillus-veneris D. G. Kelch 2006-12-9 6 .532 Orange Newport Bay, Back Bay Dr. betweeen marsh and steep bluff. Comment
  RSA749677  Adiantum capillus-veneris A. C. Sanders, Fred M. Roberts 2008-7-16 35836 Orange Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin 391 Comment
  RSA0119682  Adiantum jordanii Fred M. Roberts 2015-3-10 7923 Orange San Joaquin Hills: Niguel Hill, on ridge above Aliso Canyon ear end of Ceanothus Drive (Hangover House property), 0.4 km WNW summit Aliso Peak. 122 Comment
  RSA698477  Adiantum jordanii R. H. McArthur 1934-4-28 s.n. Orange Ladd Canyon Comment
  RSA749641  Adiantum jordanii D. E. Bramlet 2008-4-1 4139 Orange Ridegeline in Upper Hicks Canyon, 136m S of the Haul Rd. 345 Comment
  IRVC22035  Adiantum jordanii Fred M. Roberts 1983-12-13 1154 Orange Temple Hill, Park Canyon along Park Ave., 1.3km NE Thurston Sch.; 1.7km SE Bench Mark 104, Laguna Beach 194 Comment
  IRVC3118  Adiantum raddianum Polly Brecht 1965-5-7 HS 0580 Orange Newport Beach; Cherry Tree Lane. Southern Coastal Comment
  RSA695488  Ageratum houstonianum M. Funakoshi 1941-10-23 s.n. Orange Santa Ana. Comment
  CAS-BOT-BC295625  Agnorhiza ovata P. C. Everett 1935-6-18 7198 Orange Santa Ana Mts., Main Divide Motorway, Los Pinos Potrero 914 Comment
  RSA679216  Agoseris grandiflora var. grandiflora Fred M. Roberts 2003-6-17 5917 Orange Just NE of Falcon roup Camp, 2.1km ESE Los Pinos Peak just west of main road. 1009 Comment
  RSA416424  Agoseris retrorsa Christopher Davidson 1977-5-18 5611 Orange Cleveland National Forest; Santiago Peak (on Orange-Riverside Co. line) 1706 Comment
  RSA798099  Agrostis exarata R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49570 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  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
  CDA1694  Agrostis viridis M. K. Bellue, Johnson 1945-5-8 Orange Right and Hazzard, about 1/2 mile south of Garden Grove. 0 Comment
  UCR193037  Agrostis viridis A. C. Sanders, Fred M. Roberts 2008-6-17 35494 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, West Loma Ridge Spur Road c. 0.8 mi SW of Irvine Lake and 0.9 mi. SE of Sheriff's Training Facility, just east of Hwy 241 280 Comment
  UC729654  Ailanthus altissima E. R. Johnson May 1932 Orange Aliso Canyon; Santa Ana Canyon, Rancho Santa Ana 182 Comment
  RSA689740  Albizia distachya Scott D. White, Brian Leatherman 2003-10-30 9849 Orange Foothills; Oso Parkway crossing over Chiquita Canyon. 198 Comment
  CAS-BOT-BC135853  Allium haematochiton P. C. Everett; E. R. Johnson 1935-5-29 7093 Orange Santa Ana Mts., head of Claymine Canyon 731 Comment
  UCR215292  Allium haematochiton Fred M. Roberts, D. E. Bramlet 2008-5-13 6952 Orange Santa Ana Mountains, upper Weir Canyon, central fork, 3.5 km NE of Robbers Peak 369 Comment
  RSA0063249  Allium marvinii Philip A. Munz 1949-5-26 13373 Orange Head of Sierra [Freemont] Canyon, Santa Ana Mountains. 732 Comment
  CAS-BOT-BC132051  Allium peninsulare var. peninsulare P. C. Everett; E. R. Johnson 1935-5-29 7092 Orange Santa Ana Mts., Summit of Claymine Canyon 762 Comment
  RSA548861  Allium praecox Bernard Jaroslow 1990-4-25 B- 37 Orange Sitton Peak Truck Trail: Trailhead 0.3 mile W of ranger station near hot springs, on Ortega Highway (SR 74) Comment
  RSA588705  Allophyllum glutinosum Fred M. Roberts, Carol A. Roberts 1990-5-23 4646 Orange Santa Ana Mtns.: West Fork, Upper Long Canyon, near Main Divide Truck Trail, 4.5 km SE Los Pinos Peak. 756 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
  RSA696427  Alnus rhombifolia Keith E. Hoffmaster 1930-3-9 269 Orange Santa Ana Mts. Comment
  RSA734635  Alnus rhombifolia A. C. Sanders, T. B. Salvato 2008-5-13 35366 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  RSA562809  Aloe arborescens Steve Boyd, Timothy S. Ross 1992-5-20 7481 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon. 351 Comment
  POM201873  Amaranthus blitoides L. M. Booth 1932-7-25 s.n. Orange Santa Ana River, 1 1/2 miles from ocean. 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
  RSA274  Amaranthus powellii J. T. Howell 1927-7-27 502 Orange Near ranch, Rancho Santa Ana 152 Comment
  RSA404566  Amaranthus retroflexus Albert J. Perkins 1912-10-15 s.n. Orange Peatlands near head Newport Bay. Comment
  RSA562747  Amaranthus retroflexus Steve Boyd 1992-5-19 7443 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon from crossing the creek by Lucas Canyon Trail, downstream to confluence with Aliso Canyon. 274 Comment
  POM5985  Amblyopappus pusillus Philip A. Munz 1918-5-5 2186 Orange Laguna Beach. Comment
  UC565480  Amblyopappus pusillus H. L. Mason 1926-4-25 2915 Orange 5 mi s, on the cliffs Laguna Comment
  SEINET6738510 Image available Amblyopappus pusillus L. C. Wheeler 1932-6-25 859 Orange Newport Bay 1 Comment
  RSA12823  Ambrosia acanthicarpa E. R. Johnson 1934-12-5 6256 Orange Rancho Santa Ana, Santa Ana Canyon. 137 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
  RSA643441  Ambrosia chamissonis R. D. Goeden, D. W. Ricker 1970-4-29 s.n. Orange Pacific Coast: Newport Beach, NW edge of town between Seashore Dr., Neptune Ave. 56th and 58th Streets. 2 Comment
  POM4813  Ambrosia chamissonis Anonymous 1897-5-16 s.n. Orange Ocean Beach. Comment
  CAS-BOT-BC45064  Ambrosia psilostachya John Thomas Howell 1927-9-24 3121 Orange Santa Ana River bottom, Santa Ana Canyon 152 Comment
  RSA753036  Ambrosia psilostachya A. C. Sanders, Fred M. Roberts 2008-9-18 36073 Orange Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 320 Comment
  UCSB52398  Ambrosia psilostachya Roberts, Fred 1982-10-4 Orange Laguna Niguel; Niguel Hill, 2.7 km. NNE Aliso Peak; 1.5 km. WNW Alicia Fire Station 160 Comment
Read comments
Jan 25 2020
  POM3043  Ammannia robusta I. M. Johnston 1918-9-3 s.n. Orange Laguna Canyon (at the lakes) 107 Comment
  UCR158026  Ammannia robusta Adrian Wolf 1998-5-15 273 Orange South Coast, Lambert Reservoir, north of El Toro Marine Corps Air Station 134 Comment
  JEPS12324  Ammi visnaga Lawrence M. Booth 1932-7-18 1268 Orange near Coast Santa Ana R. Meadow Comment
  CAS-BOT-BC177252  Amorpha fruticosa Crawford; Johnston 1917-6-9 1225 Orange Santa Ana River near Corona Comment
  CAS-BOT-BC177253  Amorpha fruticosa J. Ewan 1929-6-28 3617 Orange Santiago Canyon, Santa Ana Mts. 365 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
  UC527692  Amorpha fruticosa B. D. Stark 1931-10-17 2463 Orange Santa Ana Canyon Rancho Santa Ana 137 Comment
  CLARK-A1528-460  Amorpha fruticosa var. occidentalis Dave Cerf 1971-4-17 Orange Orange Park Acres 243 Comment
  HSC3516  Amsinckia intermedia C. L. Hitchcock, C. V. Muhlick 1964-3-17 23064 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  RSA499932  Amsinckia intermedia E. A. Purer, Freda Detmers 1932-3-23 15572 Orange near Huntington Beach. Roadside of Coast Highway Comment
  UC1178237  Amsinckia intermedia Francia Chisaki 1957-4-3 927 Orange 6 mi s Irvine (just s of El Toro near top of hill on Hwy 101) Comment
  UCR191417  Amsinckia intermedia A. C. Sanders, Fred M. Roberts 2008-4-8 34755 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd. 457 Comment
  RSA0089627  Amsinckia intermedia Marcus E. Jones 1926-3-13 s.n. Orange Santa Ana Canyon. Comment
  UCD119709  Amsinckia intermedia Ira L. Wiggins 1966-3-4 20495 Orange Along Riverside Highway, 4.5 mi. E. of Newport Freeway exit. Comment
  UCR102014  Amsinckia menziesii B. G. Pitzer 1997-3-25 3008 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  HSC17835  Anagallis arvensis J. W. Johnson 1961-3-29 Orange Newport Beach, on S side of upper Newport Bay Comment
  JEPS43116  Anagallis arvensis Lawrence M. Booth 1932-6-28 1216 Orange Bolsas Creek Comment
  UCR99874  Anagallis arvensis Scott D. White 1996-12-20 4636 Orange Santa Ana Mountains, above Modjeska Canyon; proposed water tank site 488 Comment
  RSA678725  Andropogon glomeratus Fred M. Roberts, Carol A. Roberts, Robert Allen 2001-8-4 5518 Orange Santa Ana Mountains: San Juan Canyon at confluence with Viejo Cyn., on San Juan Creek below Calif. Rte. 74, 4.0km WnW Sitton Peak., (33 35' 41 N, 117 29' 14 W; T6S,R6W,SE/4 SE/4 Sect. 34) 287 Comment
  JEPS535  Anemopsis californica Lawrence M. Booth 1932-7-19 1280 Orange Bolsas Creek Comment
  UCD137875  Anemopsis californica E. Frost 1996-5-11 12 Orange Newport Back Bay, 150 yards in along bike path. 7 Comment
  CAS-BOT-BC400330  Anemopsis californica Carl B. Wolf 1932-6-28 3803 Orange Bryant Ranch, edge of field and road (Bixby Ave.) 750 ft. E. of S.W. corner of N.W.40 of N.W.160 of Sect. 33 T4S. R11W. Comment
  IRVC26961  Anemopsis californica Peter A. Bowler 2003-4-20 s.n. Orange UC San Joaquin Freshwater Marsh Reserve; in marsh at Nedge of marsh beside UCI Arboretum. Southern Coastal 3 Comment
  IRVC7985  Anthemis cotula T. W. Mulroy 1973-5-31 1901 Orange near Sand Canyon Reservoir. San Joaquin Hills Comment
  RSA0014992  Antirrhinum coulterianum Fred M. Roberts 2008-5-14 6966 Orange Lomas de Santiago: Loma Ridge, upper Bee Flat Canyon below Loma Ridge Rd., 1.3 km N Bee Peak and 5.4 km NW Bolero Lookout, Irvine Ranch Conservancy. 381 Comment
  UCR250866  Antirrhinum coulterianum Dick Newell, Don Millar 2014-4-29 367 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon wash 0.5 mi. above lower gate at 241 Toll Rd. 257 Comment
  POM7664  Antirrhinum kelloggii Philip A. Munz, R. D. Harwood 1920-4-24 3785 Orange Sierra [Freemont] Canyon 366 Comment
Read comments
Sep 17 2011
  RSA773516  Antirrhinum kelloggii Fred M. Roberts 1999-5-3 5206 Orange Lomas de Santiago: ridge between Limestone Canyon and Santiago Canyon Wash, 0.4 km SE Silverado School, and 3.9 km Bolero Lookout 351 Comment
  RSA725573  Antirrhinum multiflorum Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6528 Orange dirt road along ridge between Black Star and Fremont Canyons, 4.4km ENE Irvine Lake spillway and 2.4km WSW Hidden Ranch. 662 Comment
  RSA732279  Antirrhinum nuttallianum A. C. Sanders 2008-4-29 35135 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
  RSA542506  Antirrhinum nuttallianum subsp. nuttallianum Fred M. Roberts 1987-4-28 3393 Orange IRVINE: San Joanuin Hills, lateral to Upper Sand CAnyon, 2.3 km SE French Hill. 107 Comment
  POM354910  Antirrhinum nuttallianum subsp. subsessile Louis C. Wheeler 1932-6-25 854 Orange Newport Bay. 3 Comment
  UCSB52937  Antirrhinum nuttallianum subsp. subsessile Roberts, Fred 1984-4-29 Orange Laguna Beach; Temple Hill above Laguna Cyn; 6.5km SE Signal Peak; 0.6km E BM 104 195 Comment
  CAS-BOT-BC447685  Aphanes arvensis P. A. Munz 1918-5-4 2223 Orange Laguna Beach Region, Laguna Canyon Comment
  UCSB50648  Aphanes occidentalis Marsh, K. 1984-2-17 Orange Casper's Regional Park: Cyn. north of Carillo Road, c.a. 1.6km NE Visitor Center 150 Comment
  UC537056  Aphanisma blitoides P. A. Munz 1934-3-26 13131 Orange bluffs Newport Beach 22 Comment
Read comments
Dec 4 2014
  UC536945  Apiastrum angustifolium Lawrence M. Booth 1932-5-12 1027 Orange Newport Bay 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
  IRVC20162  Apium graveolens R. L. Allen 1978-8-28 Orange behind Saddlback Ranch Apts., Los Alisos Blvd.; in moist soil, shady location. Mission Viejo 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
  IRVC20014  Apocynum cannabinum var. glaberrimum Gordon A. Marsh, K. G. Marsh 1981-7-26 Orange Cleveland National Forest; Lion Canyon, near mouth. Santa Ana Mountains Comment
  RSA38679  Aquilegia formosa P. A. Munz 1946-10-26 11619 Orange Botanic Garden. Comment
  IRVC27880  Araujia sericifera A. C. Sanders, Mark A. Elvin 2003-10-12 27319 Orange Irvine; UCI Arboretum, UCI campus near intersection of Jamboree Blvd and Campus Dr. Southern Coastal 15 Comment
  IRVC20647  Arbutus menziesii 1971-4-19 Orange Upper Trabuco Canyon. T.V. St. John Santa Ana Mountains Comment
Read comments
Jan 4 2010
  RSA629335  Arctostaphylos glandulosa Jon E. Keeley 1992-6-12 15527 Orange North of El Cariso on road to Los Pinos Pk, 3.8 km north of Hwy 74. 1000 Comment
  RSA648271  Arctostaphylos glandulosa P. Shirokawa 1998-4-24 10 Orange Cleveland National Forest - Trabuco Ranger District, 4.75 miles from Ortega Highway (State Highway 74) on North Main Divide Road, and 0.6 miles along Blue Jay Road 1066 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-BC23106  Arctostaphylos glandulosa subsp. glandulosa Robert F. Thorne; J. Olmsted 1963-7-26 32827 Orange Santa Ana Mts., Cleveland National Forest, Trabugo District. 1188 Comment
  CAS-BOT-BC23108  Arctostaphylos glandulosa subsp. glandulosa L. R. Abrams 1901-6-15 s.n. Orange Mt. Dante a So summit Comment
  CAS-BOT-BC23109  Arctostaphylos glandulosa subsp. glandulosa Helen D. Leis 1904-5-1 723 Orange Blue Light Trail, Silverado Canyon, Santa Ana Mts. 670 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
  IRVC1253  Arctostaphylos glandulosa subsp. glandulosa A. S. Boughey 1965-3-16 63 Orange Silverado Canyon. Santa Ana Mountains Comment
  IRVC1254  Arctostaphylos glandulosa subsp. glandulosa A. S. Boughey 1965-3-16 69 Orange Silverado Canyon. Santa Ana Mountains Comment
  RSA80656  Arctostaphylos glandulosa subsp. glandulosa P. A. Munz, E. K. Balls 1952-8-19 17924 Orange summit of Ortega Hwy. 823 Comment
Read comments
Nov 1 2013
  SD247632  Arctostaphylos glandulosa subsp. glandulosa R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49683 Orange Northern Santa Ana Mountains; Coal Canyon [NW of Sierra Peak] 456 Comment
  UCR281857  Arctostaphylos glandulosa subsp. leucophylla A. C. Sanders, Yi Huang 2017-3-3 42697 Orange Peninsular Range; Santa Ana Mtns., North Main Divide Road, 3.5 km north of Hwy 74 959 Comment
  UC1120327  Arctostaphylos glandulosa subsp. zacaensis H. A. Jensen 1937-11-4 442 Orange head of Trabuco Canyon Cleveland National Forest, Elsinore Quadrangle Comment
  UC1137195  Arctostaphylos glandulosa subsp. zacaensis Willis E. Pequegnat 1940-6-12 Orange Main Divide Rd e Los Pinos Peak; Cleveland National Forest, Elsinore Quadrangle, Santa Ana Mt 1371 Comment
  UCD170239  Arctostaphylos otayensis K. M. Meyer; A. Townesmith and T. Scott 2007-3-10 6 Orange Cleveland National Forest, 2 mi. N of Main Divide Rd./NF3S04, off Hwy. 74. 957 Comment
  SEINET10907244  Arctostaphylos refugioensis James S. Miller 2001-12-15 Miller 10647 Orange Rancho Santa Ana Botanic Garden, Santa Ana, CA. Comment
  SEINET5585509  Arctotheca prostrata R. E. Riefner Jr. 2013-1 13 -125 Orange City of Irvine, Irvine Valley College, Irvine Center Dr. near College St. 37 Comment
  RSA607257  Arctotis venusta L. C. Wheeler 1933-10-21 2224 Orange Newport Bay. 3 Comment
  UCR215299  Aristida adscensionis Fred M. Roberts 2008-4-24 6929 Orange Lomas de Santiago, Loma Ridge, lower Hicks Canyon 350 m east of Haul Rd., 1.9 km east of Rattlesnake Cyn. Reservoir dam and 2.1 km west of Bee Peak, Irvine Ranch Conservancy 180 Comment
  RSA550605  Aristida purpurea var. parishii Fred M. Roberts 1989-4-26 4314 Orange Santa Ana Mountains: ridge north of Santiago Canyon, west of Blind Canyon 9.5 kilometers SW Sierra Pead, ca. 1.7 kilometers NW Irvine Lake spillway., UTM Z11 37 39 900m N, 4 31 900mE 247 Comment
  RSA588883  Aristida ternipes var. hamulosa Fred M. Roberts, Dave Bontrager 1990-6-5 4672 Orange Rancho Mission Viejo: Uper Gabino Canyon, near Orange County line, 3.9 kilometers E Point Ranch Survey Marker; UTM Z11 37 10 300m N, 4 52 100m E. 280 Comment
  RSA5961  Artemisia biennis C. B. Wolf 1932-9-13 4037 Orange Bryant Ranch, No. boundary between San Gabriel River Flood Control Dike & Well in SE 1/4 sect. 25. 1300 ft W of n.E. corner of S.E. 1/4 Sect. 25. T4S R12W. 6 Comment
  CAS-BOT-BC90187  Artemisia californica John Thomas Howell 1927-10-22 3159 Orange hills on n. side of Santa Ana [Canon] 213 Comment
  IRVC28770  Artemisia californica Elizabeth H. Hook, Caroline Tran 2006-2-4 1 Orange San Joaquin Marsh; NW bluff edge Southern Coastal 5 Comment
  RSA756323  Artemisia californica A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37191 Orange Lomas de Santiago, lower Hangmans Tree Canyon 379 Comment
  UCR103285  Artemisia californica B. G. Pitzer, T. Tennant 1997-11-8 3373 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland area between Pacific Coast Hwy and the bike trail. 30 Comment
  UCR210051  Artemisia californica A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37191 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hangmans Tree Canyon 379 Comment
  UCR247873  Artemisia californica Fred M. Roberts 2012-9-6 7700 Orange SAN JOAQUIN HILLS: Buck Gully, Buck Gully Trail, west end near Poppy Street entrance, 2.1 km WNW Pelican Hill summit. 37 Comment
  UCR206790  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 330 Comment
  JEPS36975  Artemisia dracunculus John Thomas Howell 1927-9-24 3110 Orange Rancho Santa Ana Santa Ana Canon 152 Comment
  RSA772  Artemisia dracunculus J. T. Howell 1927-7-17 419 Orange Between Tustin and Laguna Beach. 122 Comment
  RSA784185  Artemisia dracunculus J. D. Olmsted 1959-8-26 837 Orange Along road south of mouth of Black Star Canyon north of Rock Crushing plant 305 Comment
  CAS-BOT-BC97299  Artemisia tridentata subsp. tridentata J. T. Howell 1927-10-22 3165 Orange in Santa Ana River bottom, Santa Ana [Canon] Canyon 152 Comment
  IRVC409  Arthrocnemum subterminale J. B. Anderson 1966-4-16 589 Orange Newport Beach; Corona del Mar; Buck Gully; "Little Corona Beach"; moist canyon bottom with small brooklet near stream. Southern Coastal 0 Comment
  IRVC412  Arthrocnemum subterminale E. Cowper 1965-3-1 Orange [Newport] Back Bay. Newport Beach Comment
  RSA0059638  Arthrocnemum subterminale Valerie Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary D. Wallace 2001-4-4 1107 Orange Seal Beach National Wildlife Refuge: Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  RSA0059639  Arthrocnemum subterminale A. C. Sanders, Dan Malueg, K. D. Jones 2000-4-19 23340 Orange Bolsa Chica Lagoon, along dirt roads in oil field, east of Hwy 1, east of Bolsa Chica St. 0 Comment
  UCSB23299  Arthrocnemum subterminale Keefe, Joseph 1967-3-26 Orange Newport Bay, on Back Bay Drive, 2.0 miles northeast of junction with Jamboree Drive, Corona del Mar 3 Comment
  UCSB36215  Arthrocnemum subterminale Ferren, Wayne 1980-8-27 Orange W side of Back Bay Drive, along channel of Newport Back Bay, ca. 1.5 km. NE of Rt. 1, Newport Beach Comment
  RSA719403  Arundo donax Fred M. Roberts, Robert L. Allen 2006-10-8 6432 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  UCR235513  Asclepias curassavica R. E. Riefner Jr. 2011-8-19 11- 100 Orange South Coast, city of Laguna Beach, bluff area west of West Street and Pacific Coast Highway 4 Comment
  IRVC25009  Asclepias fascicularis Fred M. Roberts 1986-6-27 3034 Orange Mission Viejo: Creek channel along Cabot Rd. near Oso Pkwy. Comment
  RSA683219  Asparagus asparagoides Scott D. White, Matt Carlton 2003-11-20 9873 Orange Santa Ana Mountain foothills: San Juan Creek in San Juan Capistrano. 37 Comment
  RSA743383  Asparagus asparagoides Fred M. Roberts 2008-5-27 7002 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  RSA741481  Asphodelus fistulosus R. E. Riefner 2008-5-30 08 -125 Orange Near City of Orange, Santiago Creek, vicinity of Jackson Ranch Rd. at Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
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Feb 28 2016
  IRVC20218  Aspidotis californica Fred M. Roberts 1982-9-29 817 Orange Niguel Hill, 2.1km NE Aliso Peak; 1.0km WSW Alicia Fire Sta., Laguna Niguel 249 Comment
  UCSB52883  Asplenium vespertinum Roberts, Fred; Allen, R. 1983-4-10 Orange Santa Ana Mtns; Upper Hot Springs Canyon, 2.3 km SW Falcon Group Camp; 1.9 km S Los Pinos Peak. 852 Comment
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Feb 26 2013
  RSA699721  Aster bernardinus Keith E. Hoffmaster 1933-10-8 1046 Orange Near Newport Bay. Comment
  RSA704025  Astragalus accidens var. hendersonii R. H. McArthur 1934-4-19 s.n. Orange Gypsum Canyon. [County not listed, but probably Orange Co.] Comment
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Feb 16 2013
  RSA20375  Astragalus brauntonii Percy C. Everett, E. R. Johnson 1937-11-30 9381 Orange Claymine Canyon to sierra peak Road 609 Comment
  UCR222417  Astragalus gambelianus D. E. Bramlet 2008-3-31 4135 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, 282 m east of upper Hicks Haul Rd., tributary of Limestone Canyon, 1 km south of Santiago Canyon Rd. 317 Comment
  UCR234139  Astragalus trichopodus Dick Newell, Don Millar, Judy Booth 2012-4-25 246 Orange South Coastal Plain, Muth Interpretive Center, upper Newport Bay, Newport Beach 9 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
  IRVC18328  Astragalus trichopodus var. lonchus Karlin G. Marsh, S. Watkins 1977-3-30 Orange [Trabuco Canyon], Upper Trabuco Canyon Rd., 3mi from Live Oak Canyon Store; on both sides and on cliff above. Santa Ana Mountains Comment
  SEINET7796213  Astragalus trichopodus var. lonchus E. A. Bourdo 1975-7-25 s.n. Orange Crest of hills above Niguel Beach Comment
  RSA749468  Athysanus pusillus Fred M. Roberts 1999-4-22 5188 Orange Lomas de Santiago: tributary to Santiago Creek wash along spur road on ridge between Limestone Cyn. and Santiago Creek wash opposite Williams Cyn., 1.8 km SE Silverado Sch. and 2.3 km NNW Bolero Lookout. 396 Comment
  UCR281087  Atriplex R. E. Riefner Jr. 2006-8-8 06- 383 Orange City of Irvine, MacArthur Blvd. c. 0.2 mile south of Jamboree Rd. near Bonita Creek 12 Comment
  RSA752215  Atriplex amnicola R. E. Riefner Jr. 2002-5-4 02 -91 Orange Upper Newport Bay, Jamboree Rd. and Bayview Dr. 15 Comment
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Feb 28 2016
  CDA2883  Atriplex amnicola R. E. Riefner Jr. 2006-8-6 06 -381 Orange City of Newport Beach, Newport Bay, Big Canyon Creek drainage near Back Bay Drive. Comment
  HSC101878  Atriplex amnicola Rick E. Riefner Jr 2006-4-17 6155 Orange Upper Newport Bay, near Bayview Wy. and Bayview Pl. 7 Comment
  UC7076  Atriplex argentea var. mohavensis O. B. Byram 1901-9-10 Orange Westminster Comment
  POM47599  Atriplex canescens I. M. Johnston 1924-8-29 s.n. Orange Corona Del Mar Comment
  CAS-BOT-BC170191  Atriplex canescens subsp. canescens I. M. Johnston 1918-9-3 2149 Orange Laguna Beach 6 Comment
  CAS-BOT-BC170195  Atriplex canescens subsp. canescens John Thomas Howell 1927-10-22 3163 Orange In hills on n. side of Santa Ana Canyon. 152 Comment
  SD144473  Atriplex canescens var. canescens B. Pitzer 1996-4-30 2789 Orange Crystal Cove State Park, S of City of Irvine on Hwy 1 (Pacific Coast Hwy). Comment
  RSA452402  Atriplex coulteri Anstruther Davidson 1908-5-1 1800 Orange Newport Bay Comment
  RSA598021  Atriplex coulteri D. E. Bramlet 1994-2-3 2363 Orange San Joaquin Hills. At the head of Bommer canyon, approximatly 30m. NE of the rideline truck trail, near peak 1033. 296 Comment
  UCR37775  Atriplex coulteri Steve Boyd 1981-5-13 s.n. Orange South Coast, Pelican Hill, Irvine Ranch Property, San Joaquin Hills south of Corona del Mar 218 Comment
  IRVC25202  Atriplex davidsonii Fred M. Roberts 1986-11-4 3201 Orange Anaheim Bay, north of Hog Island, Seal Beach Naval Weapons Station 0 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
  RSA488137  Atriplex glauca Fred M. Roberts 1985-8-30 2186 Orange Laguna Niguel: Niguel Hill, Pacific Island Rd., 1.4 km ESE Aliso Pk. 182 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
  RSA708449  Atriplex lentiformis Mark Elvin 2004-5-2 3423 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
  UCR154265  Atriplex lentiformis Mark A. Elvin 2004-5-2 3423 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  RSA443841  Atriplex lentiformis subsp. breweri J. W. Johnson 1978-11-8 s.n. Orange Irvine: Coyote Canyon Road & MacArthur Blvd. intersection. Comment
  RSA0028771  Atriplex lentiformis subsp. lentiformis Fred M. Roberts 2009-4-21 7112 Orange Dana Point Headlands: southern cliffs, 0.7 km W Marine Institute at Dana Point Harbor. CNLM Dana Point Preserve. 3 Comment
  CLARK-A1528-1186  Atriplex leucophylla John C. Roos 1949-10-1 4677 Orange Doheney Beach Comment
  RSA478323  Atriplex leucophylla Gertrude Dunn 1931-8-9 s.n. Orange Between Huntington Beach and Santa Ana Comment
  RSA251  Atriplex prostrata J. T. Howell 1927-10-29 s.n. Orange Bryant Ranch, near Long Beach. 15 Comment
  RSA717049  Atriplex prostrata Fred M. Roberts, Chris M. Barnhill 2005-9-27 6282 Orange San Juan Capistrano: San Juan Creek wash, east of La Novia Road bridge, 1.4km E Mission San Juan Capistrano. 27 Comment
  RSA232240  Atriplex rosea James Henrickson 1970-8-29 s.n. Orange 2 iles north of Huntington Beach, along Pacific Coast Highway. ca. 1 3/4 mile SE of Warner Ave. 0 Comment
  UCSB48235  Atriplex rosea Roberts, Jr., Fred 1981-5-2 Orange Mission Viejo; Camino Capistrano, below Crown Valley Overpass 49 Comment
  UC1714443  Atriplex semibaccata P. A. Munz 1934-3-26 13136 Orange edge of salt marsh Newport Beach Newport Beach 4 Comment
  RSA0031755  Atriplex semibaccata R. F. Thorne 1977-11-21 50819 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  POM201891  Atriplex serenana L. M. Booth 1932-5-19 1070 Orange Newport Lagoon, Corona del Mar. Comment
  POM201895  Atriplex serenana L. M. Booth 1932-7-1 1248 Orange Newport Lagoon. Comment
  RSA252  Atriplex serenana J. T. Howell 1927-7-22 459 Orange North of Botany Garden, Rancho Santa Ana. 274 Comment
  RSA292521  Atriplex serenana James Henrickson 1972-10-21 8064 Orange Newport Beach, So. of Jamboree Rd., E. of Irvine Coast Country Club near U.C. Irvine., Irrigated grassland eventually to be used for large Newport Beach Business Center. 46 Comment
  RSA5952  Atriplex serenana C. B. Wolf 1932-7-7 3849 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
  CDA2962  Atriplex suberecta Tom Perring, Tracy Pinckard 1994-3-2 s.n. Orange South Coast; Tustin, Marine Helicopter Station at the corner of Moffett Drive and Jamboree Rd. Comment
  RSA720295  Atriplex suberecta Tom Perring, Tracy Pinkard 1994-3-2 s.n. Orange South Coast: Tustin, Marine Helicopter Station at the corner of Moffett Dr and Hamboree Rd. 11 Comment
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Jul 19 2010
  RSA708217  Atriplex suberecta Mark Elvin 2004-5-2 3424 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
  RSA48695A  Atriplex subspicata I. M. Johnston 1924-8-29 s.n. Orange 2.5 miles north of Balboa. Comment
  IRVC29713  Atriplex triangularis Mark A. Elvin, Barry S. Nerhus 2006-11-4 5249 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  UCR116014  Atriplex triangularis George K. Helmkamp, E. A. Helmkamp 2000-10-18 6231 Orange Newport Bay, South side of the back bay. 6 Comment
  UC1543075  Atriplex watsonii Donald G. Nelson 1935-6-27 323 Orange s mouth of Newport Bay (on bluffs facing ocean beaches s of Corona del Mar); s of mouth Newport Bay, s of Corona del Mar Comment
  UCR239638  Avena barbata Fred M. Roberts 2012-4-24 7510 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
  UCR99871  Avena barbata Scott D. White 1993-3-5 1114 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  UCSB47966  Avena barbata Roberts, Fred 1980-4-3 Orange Hills 1.5 km ENE of Dana Hills High School; Dana Point 85 Comment
  RSA40  Avena barbata J. T. Howell 1927-6-17 166 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  CDA22566  Avena fatua E. McRae 1965-4-8 HS 0068 Orange Costa Mesa. 0 Comment
  RSA650452  Avena fatua Phil Goodwin 1948-2-7 s.n. Orange Collected along the road side 3 miles south of Orange. Elv. 300 ft. 91 Comment
  UCSB52947  Azolla filiculoides Roberts, Fred; Polek, M. 1983-11-16 Orange Newport Beach; upper Newport Back Bay near Back Bay Drive, 3.0 km. W UCI campus center 2 Comment
  IRVC15200  Baccharis douglasii Karlin G. Marsh 1977-9-16 Orange Huntington Beach: Huntington Cental Park, Shipley Nature Center southern coastal Comment
  RSA93210  Baccharis douglasii F. W. Peirson 1924-8-29 5092 Orange 3 miles N of Huntington Beach Comment
  IRVC25196  Baccharis emoryi Fred M. Roberts, Robert Fisher 1986-10-28 3179 Orange Main Divide Truck Trail Extension, 2.3km E Los Pinos Peak, in seep at base of south-facing road cut. Santa Ana Mountains 1030 Comment
  RSA232226  Baccharis emoryi James Henrickson 1970-10-3 5361 Orange 2 miles NW of Huntington Beach, common along raised roadsides in southern open portion of Bolsa Chica Salt Marsh. 0 Comment
  RSA528051  Baccharis emoryi A. C. Sanders 1990-10-6 10190 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Hwy 1 1 Comment
  RSA657740  Baccharis glutinosa Ken Greby 1985-4-18 20 Orange Alongside Laguna Canyon Rd. approx. 1.5 km. NE from El Toro Rd. 46 Comment
  UCSB48035  Baccharis glutinosa Roberts, Fred 1981-9-26 Orange Huntington Beach; Calif. Rte. 1, near mouth of Santa Ana River, 0.1 km. N jct. Brookhurst Ave.; 0.1 km. SW Bench Mark 7 2 Comment
  RSA653414  Baccharis malibuensis R. E. Riefner, A. Wolf 2000-8-23 20 -732 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek & immediately S. of major stream fork 305 Comment
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Jan 6 2018
  RSA0008328  Baccharis malibuensis R. E. Riefner Jr. 2007-6-22 07 -275 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 545 Comment
  RSA5596  Baccharis pilularis B. D. Stark 1933-1-21 4523 Orange San Clemente Comment
  SD253901  Baccharis pilularis Jim Riley 2013-12-10 134 Orange San Clemente area; 0.29 miles E intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 74 Comment
  SD73484  Baccharis pilularis P. C. Everett 1934-11-7 6246 Orange Rancho Santa Ana Botanic Garden; open hilltop. 199 Comment
  IRVC21308  Baccharis pilularis subsp. consanguinea Fred M. Roberts 1983-12-9 1152 Orange UCI Ecological Preserve, 0.8km SSW campus center, Irvine 70 Comment
  UCR247874  Baccharis pilularis subsp. consanguinea Fred M. Roberts 2012-9-6 7702 Orange SAN JOAQUIN HILLS: Buck Gully, Buck Gully Trail, about 1.8 km NW Pelican Hill summit. 64 Comment
  SD175792  Baccharis salicifolia D. G. Kelch 2006-12-9 06 557 Orange Irvine, University Dr. along tidal creek just east of I-73. 9 Comment
  JEPS40678  Baccharis salicifolia subsp. salicifolia Alice King 1908-4-1 Orange Santiago Creek Comment
  UCD129479  Baccharis salicifolia subsp. salicifolia B. Pitzer 1996-4-30 2769 Orange Upper Newport Bay: California Department Fish and Game Ecological Reserve, off (W of) Jamboree Rd. 6 Comment
  CAS-BOT-BC106667  Baccharis salicina Peter H. Raven 1957-9-28 11382 Orange In moist spot, salt marshes at north limits of Surfside Comment
  UCD129397  Baccharis salicina Ira L. Wiggins 1965-11-6 20338 Orange Kraemer Oil Estates, near well no. 15, near end of county road constituted by continuation of Orangethorpe Ave. Comment
  RSA699553  Baccharis viminea Kenneth Beard 1934-02 s.n. Orange Walnut grove on Freeman Street, Santa Ana. Comment
  RSA734884  Baccharis viminea Kenneth Beard 1934-02 s.n. Orange Beside Santa Ana River at First Street. Comment
  CDA7901  Bassia hyssopifolia Adam Ontiveros 2008-7-8 PDR# 1543672 Orange Anaheim, 1750 S. Douglass Rd 0 Comment
  SBBG47294  Bassia hyssopifolia R. N. Philbrick 1973-8-31 Orange marsh just E of University of California, Irvine Comment
  POM259529  Bassia hyssopifolia A. C. Keller, F. F. Gander 1938-7-25 s.n. Orange Dike south of San Diego. Comment
  RSA12655  Batis maritima C. B. Wolf 1934-7-29 s.n. Orange Newport Bay. 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
  UCR240088  Bebbia juncea Dick Newell, Don Millar 2012-10-2 303 Orange Peninsular Range; Santa Ana Mtns., Blackstar Cyn at Santiago Creek, 0.35 mi. SW of Baker Canyon Rd. 288 Comment
  RSA92401  Bebbia juncea F. W. Peirson 1923-9-8 4043 Orange Trabucco Canyon. 427 Comment
  CAS-BOT-BC106423  Bebbia juncea var. aspera John Thomas Howell 1927-6-2 2412 Orange Southern Puente Hills in teh Santa Ana Canyon [Canon] 152 Comment
  RSA797475  Berberis pinnata subsp. pinnata R. F. Thorne 1977-11-21 49988 Orange Santa Ana Mountains: tributary canyon to San Juan Canyon about 2 miles above San Juan Fire Station Comment
  JEPS30712  Bidens laevis Peter H. Raven 1961-10-15 16850 Orange Anaheim Street, Anaheim, Santa Ana River Bed Santa Ana River Bed, Anaheim, Anaheim Street 60 Comment
  RSA696876  Bidens laevis J. Russell Bruff 1930-10 s.n. Orange Santa Ana River, 1st Street. Comment
  JEPS32526  Bidens pilosa W. L. Jepson 1940-10-6 20181 Orange Horseshoe Bend, Santa Ana Canyon Santa Ana Canyon, Horseshoe Bend Comment
  UC536947  Bidens pilosa Lawrence M. Booth 1932-7-19 1276 Orange Bolsas Marsh Comment
  CHSC2067  Bloomeria crocea S. Westerberg 1938-4-1 Orange Dana Point. Comment
  RSA732246  Bloomeria crocea A. C. Sanders, Fred M. Roberts 2008-4-22 34997 Orange Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 213 Comment
  RSA652086  Bloomeria crocea Bob Edwards 1948-5-2 sn Orange Orange: 4.5 miles east of Orange in an open field near a Catholic cemetery. 107 Comment
  POM1686  Bloomeria crocea var. crocea D. L. Crawford 1916-5-5 s.n. Orange Laguna Beach Comment
  SBBG18501  Bloomeria crocea var. crocea E. B. Carlton 1962-6-24 9 Orange rd from Hidden Valley Rd to Temple Hills Rd, Laguna Beach 182 Comment
  UCSB36205  Bolboschoenus maritimus Ferren, Wayne; Whitmore, S. 1980-8-27 Orange Along tidal ditch, in salt marsh of Newport Backbay; just W of Backbay Drive; ca. 3 km. NE of Rt. 1, Newport Beach Comment
  UCR102034  Bolboschoenus maritimus subsp. paludosus B. G. Pitzer 1997-4-15 3137 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
  RSA450867  Bothriochloa barbinodis Gordon Marsh, Karlin G. Marsh 1977-11-21 s.n. Orange Santa Ana Mountains: San Juan Hot Springs. Comment
  UC1618050  Bothriochloa barbinodis Donald G. Nelson 1935-4-6 212 Orange e of San Juan Capistrano (just s of boundary of Cleveland National Forest, up San Juan Canyon, northward from summer ranger station on main highway); San Juan Canyon Comment
  UCSB50629  Bothriochloa barbinodis Roberts, Fred 1982-6-30 Orange Laguna Nigel, Niguel Hill, Pacific Island Dr; 2.0 km SE Aliso Park; 1.3 km E Bench Mark 133 Comment
  UCR218460  Bougainvillea glabra Robert DeRuff 2008-1 348 Orange South Coast, Upper Newport Bay, between Mariner's Drive and 23rd St. 12 Comment
  CAS-BOT-BC95405  Bowlesia incana John Thomas Howell 1928-2-26 s.n. Orange Hills on N side of Santa Ana Canyon 152 Comment
  UCR158030  Brachypodium distachyon Adrian Wolf 1998-5-15 286 Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 Comment
  RSA678500  Brachypodium distachyon Fred M. Roberts, Robt. Allen, Carol A. Roberts 2003-5-11 5865 Orange Dana Point Headlands: hilltop, 0.6km SSW Richard Henry Dana School south of Pacific Coast Highway and north of Scenic Drive., (UTM: 11S - 04 33 104mE, 37 02 642mN) 73 Comment
  UCR186136  Brassica geniculata T. B. Salvato, Katie Kurtz 2006-10-15 1921 Orange South Coast, Irvine, San Diego Creek flood control channel, near Michelson Drive and Harvard Avenue 6 Comment
  UCR191363  Brassica nigra A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34626 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
  OBI17601  Brassica rapa Kurt R. Neisess 1975-12-19 s.n. Orange In Yorba Linda 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
  RSA792  Brickellia californica J. T. Howell 1927-11-5 801 Orange Racnho Santa Ana, W side. Comment
  UCR132984  Brickellia nevinii Adrian Wolf 2000-6-22 471 Orange Santa Ana Mtns., North Ranch Policy Plan Area, North Black Star Canyon, 2.1 km NNE of Black Star Coal Mine 503 Comment
  SEINET199452  Brodiaea capitata J. R. Glen 1957-5-3 Orange .5 miles from the San Bernardino County line. 3 miles east of Olinda along Carbon Canyon road. 201 Comment
  RSA655021  Brodiaea filifolia R. A. Hamilton 1998-6-19 s.n. Orange SCE easement north of the Foothill Transportation Corridor. The site is 1.3km north of El Toro Road and 1.6km east of Portola Parkway. 290 Comment
  RSA696331  Bromus Keith E. Hoffmaster 1927-5-2 s.n. Orange Santa Ana Comment
  CAS-BOT-BC144300  Bromus arizonicus Ira L. Wiggins 1966-3-1 20482 Orange Margin of grain field along western edge of campus, California State College at Fullerton. Comment
  SD241668  Bromus carinatus A. C. Sanders 2008-4-29 35144 Orange Peninsular Range; Santa Ana Mountains: Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 miles SW of Santiago Reservoir (Black Star Canyon 7.5'Q) 334 Comment
  SEINET3921870  Bromus carinatus Steve Boyd, Tim Ross 1992-5-19 7417 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo (7S06) north into Aliso Canyon.; 0 366 Comment
  UCR48031  Bromus diandrus Jack Easton 1987-4-21 s.n. Orange Southern Coast, Kain property, San Clemente, mouth of Trafalgar Canyon, just behind the beach 30 Comment
  RSA385398  Bromus diandrus Barbara Hutchison 1941-5-3 s.n. Orange Los Angeles. Comment
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Oct 15 2013
  RSA542559  Bromus pseudolaevipes Karlin G. Marsh 1989-6-23 s.n. Orange Santa Ana Mountains: Laurel Springs, Harding Truck Trail., UTM 3730550m N, 446250m E 1036 Comment
  RSA697684  Bromus rigidus Rankin s.n. Orange Costa Mesa. Comment
  UCD59517  Bromus rubens Ira L. Wiggins 1966-3-4 20494 Orange Shoulder of Peralta Ave. near junction of Newport Freeway and Riverside Highway. Comment
  UCR192471  Bromus rubens A. C. Sanders, Fred M. Roberts 2008-3-25 34539 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA45  Bromus rubens J. T. Howell 1927-6-9 66 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA650420  Bromus rubens Howard Cook 1948-4-15 13 Orange Collected on highway 14, about 8 miles east of Fullerton. 91 Comment
  UCSB47951  Bromus tectorum Roberts, Dar 1980-5-3 Orange 1.8 km W Trabuco Peak on Main Divide Truck Trail;, and Trail Trail 1256 Comment
  JEPS53272  Cakile edentula Alice King June, 1908 Orange Newport Comment
  UCR42432  Cakile maritima A. C. Sanders 1986-5-31 6525 Orange Southern Coast, Balboa Island at Newport Beach. Dunes at the back edge of the beach, from 6th St. S to the harbor entrance 1 Comment
  UCD114944  Cakile maritima Earl Brown; Tracy Brown 1993-5-2 s.n. Orange Calafia Beach Park, found 10' S of entrance to the beach (just before railroad tracks). 6 Comment
  UC1618044  Calandrinia Donald G. Nelson 1933-7-16 163 Orange hills n. Fullerton 76 Comment
  RSA737894  Calandrinia breweri R. E. Riefner 2008-5-15 08 -82 Orange Irvine Ranch Reserve, N Irvine Ranch, eastern Fremont Canyon area, Black Star SCE road. 549 Comment
  UCR203903  Calandrinia breweri R. E. Riefner Jr. 2008-5-20 08- 104 Orange Irvine Ranch Reserve, north Irvine Ranch, western Fremont Canyon, Windy Ridge Road 531 Comment
  IRVC29098  Calandrinia ciliata Fred M. Roberts 1989-3-17 4213 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  UCR281515  Calandrinia ciliata Mitch Provance, Jeremiah George 2017-3-20 317- 108 Orange West Coyote Hills, Fullerton, vicinity of Utility Access Road W of Gilbert Street and N of Rosecrans Ave., on land previously occupied by oil fields. 131 Comment
  SEINET6903103  Calandrinia ciliata Wanda P. Vestal, A. G. Vestal 1955-3-24 s.n. Orange Trabuco Canyon, about 5 miles east of El Toro. Comment
  RSA713907  Callistemon citrinus R. E. Riefner Jr. 2005-11-23 5 -773 Orange City of Newport Beach, Upper Newport Bay, E of Jamboree Rd and S of Bayview Way at Bonita Creek channel. 6 Comment
  UCR199267  Callistemon viminalis R. E. Riefner Jr. 2007-4-1 07- 163 Orange South Coast, city of Laguna Niguel, Oso Creek, c. 1.5 mi north from Paseo de Colinas Street on Camino Capistrano Street 88 Comment
  CDA5107  Callistemon viminalis R. E. Riefner Jr. 2006-11-14 06 -674 Orange City of Irvine, San Diego Creek; vicinity of Campus Avenue at University Drive. Comment
  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
  RSA377257  Calochortus albus Albert J. Perkins 1914-5-3 s.n. Orange Trail to Santiago Peak. Comment
  CSUSB396  Calochortus catalinae Dave Cerf 1971-4-17 Orange Orange Park Acres; on Windes Drive 0.5 mile southwest end of road. 243 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
  UCR192228  Calochortus catalinae A. C. Sanders, Fred M. Roberts 2008-5-6 35260 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  POM1697  Calochortus invenustus Le Roy Abrams 1901-6-15 1848 Orange Santiago Peak trail. Comment
  RSA649686  Calochortus plummerae R. E. Riefner 2000-7-8 20 -625 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
  RSA550601  Calochortus splendens Fred M. Roberts 1989-4-25 4312 Orange Santa Ana Mountains: East Rim of Blind Canyon 8.5 kilometers SW Sierra Peak, ca. 1.4 kilometer N Irvine Lake spilway. 366 Comment
  RSA708237  Calochortus splendens Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6234 Orange Southwest arm of Modjeska Peak, 1.2km SW summit, Main Divide Rd. near jct. of road to summit. 1533 Comment
  UCR13395  Calochortus splendens William A. Hunt 1972-4-9 720409- 01 Orange South Coast, San Clemente, San Clemente Beach State Park, day use area, bluffs directly overlooking Pacific Ocean 15 Comment
  UCR191023  Calochortus splendens A. C. Sanders, Fred M. Roberts 2008-4-22 35013 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  CAS-BOT-BC492700  Calochortus splendens Gale Sphon 1959-5-2 325 Orange Between Upper and Lower San Juan Camps, Cleveland National Forest Comment
  UC1294007  Calochortus weedii E. K. Balls 1958-6-27 23278 Orange 2.8 mi e Silverado Station; Santa Ana Mts., Silverado Canyon 731 Comment
  RSA271148  Calochortus weedii var. intermedius C. W. Tilforth 1977-6-15 1344 Orange Rancho Santa Ana property in the area of Horseshoe Bend of the Santa Ana River, Santa Ana Canyon, north-east Orange County. Comment
  RSA580944  Calochortus weedii var. intermedius D. E. Bramlet 1994-6-2 2378 Orange San Joaquin Hills. On ridgeline north of Little Sycamore Canyon. The site in located 244 m NE of Little Sycamore Canyon and 1.3 km west of Laguna Canyon. Road. 165 Comment
  RSA649066  Calochortus weedii var. intermedius D. E. Bramlet 2000-6-27 3064 Orange Fremont Canyon ridge road at crossing of Edison transmissionlines. NE of the old mine site, S of junction with Blind Canyon access road. 482 Comment
  RSA773559  Calochortus weedii var. intermedius Fred M. Roberts 2008-6-3 7025 Orange Lomas de Santiago: Loma Ridge, East Fork Rattlesnake Canyon, ca. 2.3 km ENE of Rattlesnake Reservoir spillway and 2.2 km ENE Bee Peak 217 Comment
  RSA506434  Calochortus weedii var. weedii Kathy Harper 1988-7-16 s.n. Orange Cleveland National Forest, on Hwy 74 near El Cariso. SE of Hwy Comment
  RSA690976  Calochortus weedii var. weedii Scott D. White, Michael Honer 2003-5-29 9426 Orange Santa Ana Mtn foothills: Rancho Mission Viejo. Hills above Canada Gobernadora, west side of canyon, ca. 1 air mile north of Ortega hwy. 91 Comment
  RSA602115  Calycadenia tenella Scott D. White 1997-5-6 5042 Orange Santa Ana Mountains. Santiago Canyon area: Ridgetop road N and W of Bolero Lookout. 427 Comment
  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
  RSA542425  Calycadenia tenella Fred M. Roberts 1988-5-25 3979 Orange Rancho Mission Viejo: Lower Canada Chiquita, 2.0 km SSE Medium Rancho Survey Mark 88 Comment
  RSA794329  Calystegia macrostegia subsp. arida Justin M. Wood 2010-3-31 1446 Orange Santa Ana River floodplain, 0.25 miles north of Coal Canyon wildlife corrridor, west of Green River Golf Course on bluff south of the river. 122 Comment
  IRVC978  Calystegia macrostegia subsp. cyclostegia B. T. Gittins 1965-3-14 Orange bluff above cove. Dana Point Headlands Comment
  POM201721  Calystegia macrostegia subsp. cyclostegia L. M. Booth 1932-5-19 1081 Orange Newport Bay Comment
  IRVC975  Calystegia macrostegia subsp. intermedia L. McCabe 1965-4-27 Orange Corona del Mar. Newport Beach Comment
  LA50068  Calystegia macrostegia subsp. intermedia C. B. Wolf; 1931-3-6 1865 Orange 2 mi. from Orange County Park on the road to Anaheim 152 Comment
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Feb 5 2015
  RSA659546  Calystegia macrostegia subsp. macrostegia P. Shirokawa 1998-5-7 16 Orange Cleveland National Forest- Trabuco Ranger District, 0.3 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 808 Comment
  SD181588  Calystegia occidentalis subsp. fulcrata Valerie Soza, LeRoy Gross 1999-6-7 488 Orange Santa Ana Mountains, west side of Modjeska Peak, along Main Divide Road. Open west-facing steep slope, on upper side of dirt road. 1448 Comment
  RSA697156  Calystegia occidentalis subsp. occidentalis Kenneth Beard s.n. Orange Between Irvine & S.J. Capistrano. Comment
  UCSB21666  Calystegia soldanella Keefe, Joseph 1967-3-26 Orange California Highway 1, Bolsa Bay, 0.4 mile south of Warner Avenue, Sunset Beach 1 Comment
  UCR157710  Camissonia Adrian Wolf 1998-5-15 294 A Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 Comment
  RSA16353  Camissonia bistorta Percy C. Everett 1935-6-18 s.n. Orange Santa Ana Mountains. Main divide motorway to Santiago Peak, 1 mile from Ortega Highway. 732 Comment
  RSA3262  Camissonia bistorta D. L. Crawford 1916-5-5 s.n. Orange Laguna Beach. Comment
  RSA72203  Camissonia bistorta F. W. Peirson 1923-3-26 3411 Orange Canada Salada Creek, field about 1/4 mile from beach Comment
  RSA25949  Camissonia californica E. Johnson 1941-5-1 s.n. Orange River bottom, Rancho Santa Ana Comment
  RSA498  Camissonia californica J. T. Howell 1927-6-5 39 Orange Rancho Santa Ana, near east boundary. 152 Comment
  UCR191475  Camissonia californica A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34658 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 330 Comment
  UCR42387  Camissonia cheiranthifolia A. C. Sanders 1986-5-31 6523 Orange Southern Coast, Balboa Island at Newport Beach. Dunes at the back edge of the beach, from 6th St. S to the harbor entrance 1 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
  RSA454060  Camissonia cheiranthifolia subsp. suffruticosa William Greenberg 1939-7-16 s.n. Orange Newport Beach. Comment
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Feb 25 2017
  SDSU3348  Camissonia confusa H. Wedberg 1958-3-29 183 Orange In grassy patch under Quersus agrifolia, across stream from Lower San Juan Campground (Hwy 74). Comment
  RSA539381  Camissonia hirtella Fred M. Roberts, Carol A. Roberts 1988-6-9 4087 Orange Santa Ana Mtns.: Modjeska Peak, 0.9km SW summit. 1542 Comment
  RSA550611  Camissonia hirtella Fred M. Roberts, Carol A. Roberts 1989-4-20 4302 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
  RSA732072  Camissonia hirtella A. C. Sanders, Fred M. Roberts 2008-3-25 34558 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills. 259 Comment
  RSA598919  Camissonia ignota Scott D. White 1997-3-28 4847 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  UC1607988  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Donald G. Nelson 1935-4-14 270 Orange Newport Beach. Comment
  CAS-BOT-BC160447  Camissoniopsis cheiranthifolia subsp. suffruticosa L. R. Abrams 1917-6-23 6576 Orange Balboa Comment
  JEPS31764  Camissoniopsis cheiranthifolia subsp. suffruticosa Alice King 1908-1 Orange Newport Comment
  SD181437  Camissoniopsis cheiranthifolia subsp. suffruticosa Valeri Soza, Kevin Clark, et al. 2001-4-4 1111 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Reguge. 3 Comment
  SDSU8589  Camissoniopsis cheiranthifolia subsp. suffruticosa R. M Beauchamp 1968-2-17 768 Orange Beside rod in NW side of Dana Point. Comment
  UCSB22957  Camissoniopsis cheiranthifolia subsp. suffruticosa McMinn, H. 1924-7-19 Orange Sunset Beach Comment
  CAS-BOT-BC160536  Camissoniopsis lewisii Peter H. Raven 1962-4-29 17490 Orange Lower edge of Cleveland National Forest just above San Juan Guard Station Comment
  RSA759275  Cannabis sativa Robt. Allen, Reginald I. Durant 2008-5-9 s.n. Orange Silverado Canyon, 1.6 road miles EENE above Maple Springs Forest Gate, between Lost Woman Canyon and Spruce Canyon. 766 Comment
  IRVC9150  Capsella bursa-pastoris B. Gittins 1963-3-22 61 Orange Orange Coast College Campus. Costa Mesa Comment
  CAS-BOT-BC37596  Cardamine californica Reed Clark Rollins; Kathryn W. Rollins 1985-3-18 8503 Orange 16 miles east of San Juan Capistrano off state route 74. Comment
  UCR5198  Cardamine californica O. F. Clarke 1971-1-9 s.n. Orange Santa Ana Mtns, Cleveland National Forest. Harding Canyon (a tributary of Modjeska Canyon) 2 mi NE of Tucker Sanctuary Comment
  UC537121  Cardaria draba Lawrence M. Booth 1932-5-15 1197 Orange e of Huntington Beach Comment
  POM187375  Cardaria draba E. R. Johnson 1928-02 s.n. Orange Talbert, Orange County Comment
  HSC4145  Cardionema ramosissimum J. W. Johnson 1961-3-29 Orange Newport Beach, slope overlooking Upper Newport Bay. Comment
  RSA0097049  Cardionema ramosissimum Scott D. White, Amanda Duchardt 2003-5-1 9149 Orange Santa Ana Mtn Foothills; slopes above the west side of Canada Gobernadora and adjacent small canyon to the west. 76 Comment
  RSA747710  Cardionema ramosissimum Fred M. Roberts 2008-4-16 6913 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8 km W Marine Institute, Dana Point Harbor. 60 Comment
  RSA752304  Cardionema ramosissimum Fred M. Roberts, Eliza Maher 2008-3-26 6794 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  UCR177287  Cardionema ramosissimum Scott D. White, Amanda Duchardt 2003-5-1 9149 Orange Santa Ana Mountains, Slopes above the west side of Canada Gobernadora and adjacent small canyon to the west 122 Comment
  UCR79247  Carduus pycnocephalus Steve Boyd, T. Ross 1992-5-19 7427 Orange Santa Ana Mtns., San Mateo Wilderness Area. Lucas Canyon Trail. 412 Comment
  UCR210275  Carex A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37190 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hangmans Tree Canyon 379 Comment
  SEINET11629784  Carex amplectens H. D. Geis 1902-1 502 Orange no further locality Comment
  CAS-BOT-BC118482  Carex praegracilis Helen D. Geis 1902-1-1 505 Orange Unspecified Comment
  CAS-BOT-BC118483  Carex praegracilis Helen D. Geis 1902-1-1 505 Orange Unspecified Comment
  CAS-BOT-BC118502  Carex praegracilis Helen D. Geis 1902-4-1 505 Orange Santa Ana Comment
  POM202036  Carex praegracilis L. M. Booth 1932-7-1 1234 Orange Anaheim Marsh Comment
  UC211995  Carex praegracilis I. M. Johnston 1918-5-5 1889 Orange El Toro 76 Comment
  CAS-BOT-BC118492  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Santa Ana, Peat lands Comment
  CAS-BOT-BC118493  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Santa Ana, Peat lands Comment
  CAS-BOT-BC116768  Carex subfusca LeRoy Abrams 1903-6-25 3876 Orange Borders of Cuyamaca Lake Comment
  RSA640969  Carpobrotus chilensis L. C. Wheeler 1931-6-8 s.n. Orange Balboa Comment
  RSA113270  Carpobrotus chilensis E. K. Balls 1955-4-4 20418 Orange Coastal Strand, mouth of Santa Ana River, W bank, Hwy 101. 3 Comment
  JEPS42911  Carpobrotus edulis L. M. Booth 1932-8-5 1362 Orange Newport Bay. Comment
  CDA6923  Carthamus creticus M. K. Bellue 1945-5-8 Orange Tonner Canyon - Union Oil. 0 Comment
  CAS-BOT-BC281890  Carthamus lanatus T. C. Fuller 1962-6-7 8872 Orange Near the mouth of Brea Canyon, Union oil lease, ca 3 miles N of Brea Comment
  POM223456  Carthamus tinctorius Albert J. Perkins 1936-6-4 s.n. Orange Santa Ana 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
  UCR191447  Castilleja affinis A. C. Sanders, Fred M. Roberts 2008-4-8 34759 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd. 457 Comment
  RSA0010908  Castilleja affinis Keith E. Hoffmaster 1927-4-8 530 Orange Santa Ana Mountains. Comment
  RSA638965  Castilleja affinis subsp. affinis Valerie L. Soza, LeRoy Gross 1999-6-7 480 Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  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
  RSA305821  Castilleja applegatei subsp. martinii James R. Shevock 1970-4-25 160 Orange Near Irvine Lake. 305 Comment
  JEPS21373  Castilleja applegatei subsp. martinii Milo S. Baker 1938-5-17 13296 Orange Santa Ana Mts. Comment
  UCR223958  Castilleja exserta subsp. exserta Fred M. Roberts 2008-4-9 6866 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
  POM8764  Castilleja foliolosa P. A. Munz, R. D. Harwood 1920-4-24 3745 Orange Sierra [Freemont] Canyon, Santa Ana Mts. 366 Comment
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Sep 25 2011
  RSA400601  Castilleja foliolosa P. A. Munz, R. D. Harwood 1920-4-24 3745 Orange Sierra [Freemont] Canyon, Santa Ana Mts. 366 Comment
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Sep 25 2011
  UCR52606  Castilleja foliolosa Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, Santa Ana Mountains 275 Comment
  UCSB27031  Castilleja foliolosa Daniel, Dick 1964-3-28 Orange 5.1 miles northwest of junction of Silverado Canyon and Santiago Canyon Roads; up Silverado Canyon Road, about 10 miles west of Irvine Lake; 17 miles by air east of Orange Comment
  JEPS8829  Castilleja minor subsp. spiralis L. M. Booth 1932-8-9 1371 Orange Newport Bay Comment
  RSA734200  Castilleja minor subsp. spiralis Keith E. Hoffmaster 1934-7-15 117 Orange Santa Ana Mts (Modjeska) Comment
  UC454832  Castilleja minor subsp. spiralis I. J. Condit 1908-7-22 Orange Los Alamitos Comment
  UCR193055  Castilleja minor subsp. spiralis A. C. Sanders, Mitch Provance 2008-5-20 35408 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  RSA429527  Caulanthus heterophyllus M. B. Dunkle 1935-3-3 4351 Orange San Juan Canyon. 457 Comment
  RSA734337  Caulanthus heterophyllus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34623 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 366 Comment
  UCR190976  Caulanthus heterophyllus A. C. Sanders, Fred M. Roberts 2008-4-22 35001 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
  RSA0054976  Ceanothus Keith E. Hoffmaster 1934-7-15 108 Orange Santa Ana mts. (Santiago can). Comment
  CAS-BOT-BC48491  Ceanothus crassifolius T. Cass 1975-4-11 74 -671 Orange Southside Baker Canyon at Santa Ana Nat. forest boundary. 396 Comment
  RSA733938  Ceanothus crassifolius L. C. Hull 1934-2-11 s.n. Orange Black Star Canyon Rd. Comment
  RSA0054953  Ceanothus crassifolius Keith E. Hoffmaster 1935-4-19 851 Orange Santa Ana Mts. [Orange or Riverside]. 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
  SBBG4156  Ceanothus crassifolius var. crassifolius M. Van Rensselaer 1936-7-7 Orange Ortega Hwy (St Hwy 74) Comment
  UC718385  Ceanothus integerrimus P. C. Everett 1935-6-18 7214 Orange Summit of Santiago Pk. Santa Ana Mts. 1731 Comment
  RSA798602  Ceanothus leucodermis Robert F. Thorne, E. W. Lathrop 1977-5-18 49741 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  UCSB47641  Ceanothus leucodermis Roberts, Fred 1980-5-3 Orange Main Divide Truck Trail on fire break, 1.6km WNW Trabuco Peak, Santa Ana Mtns., 1295 Comment
  LA93870  Ceanothus megacarpus D. S. Verity; Fred Lang 1974-2-20 sn Orange hills behind South Laguna Comment
  SD134389  Ceanothus megacarpus Craig Reiser 1987-6-26 Orange Anaheim, Wallace Ranch near Wier Canyon Road Comment
  SEINET12210836  Ceanothus megacarpus W. Knight, Knight, I. 1982-1 4482 Orange Tilden Botanic Garden, Berkeley. Originally collected at Laguna Beach Comment
  RSA757809  Ceanothus megacarpus var. megacarpus Dylan O. Burge 2008-4-29 DOB 989 c Orange Niguel Hill, 3.08 km 250 degrees true west-southwest of Laguna Niguel. 270 Comment
  RSA25850  Ceanothus oliganthus Carl B. Wolf 1941-8-15 11157 Orange Along the Main Divide Motorway, just N. of head of Trabuco Truck Trail. 1220 Comment
  UC1071149  Ceanothus oliganthus var. oliganthus A. Lewis May 1934 413 Orange Trabucu Canyon Elsinore quad., Cleveland National Forest 1371 Comment
  UCSB3954  Ceanothus oliganthus var. orcuttii Kamb, Peter 1948-6-19 Orange Holy Jim Canyon, Santa Ana Mts. 609 Comment
  RSA748166  Ceanothus oliganthus var. sorediatus K. M. Meyer, A. Townesmith, T. Scott 2007-3-10 7 Orange Cleveland National Forest, 2 mi. N of Main Divide Rd./NF3S04, off Hwy. 74. 957 Comment
  LA44892  Ceanothus palmeri W. Pequegnat; 1938-8-11 sn Orange Santa Ana Mountains, Santiago Peak 1734 Comment
  SBBG52714  Ceanothus papillosus C. Davidson 1977-5-18 5598 Orange Pleasant Pk, (on county line) 1219 Comment
  RSA716773  Ceanothus papillosus var. roweanus Fred M. Roberts, Michelle Balk, Robert Allen, Chris Barnhill 2004-6-19 6064 Orange Snta Ana Mtns.: Holy Jim Cyn.: Holy Jim Trail, 2.0 km SE summit of Santiago Peak. 988 Comment
  RSA790451  Ceanothus papillosus var. roweanus Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49697 Orange Northern Santa Ana Mountains: Sierra Peak Comment
  OBI10341  Ceanothus spinosus Carl B. Wolf 1941-8-15 11151 Orange Santa Ana Mts, W slope Santiago Truck trl to Santiago Pk 1.2 mi above F.S. Gate 610 Comment
  POM305816  Ceanothus spinosus Henry J. Ramsey, Henry J. Ramsey 1937-4-2 1043 Orange Capistrano Canyon. Comment
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Dec 17 2011
  RSA17567  Ceanothus spinosus Carl B. Wolf 1936-6-17 7950 Orange Along Ortega Hiway, San Juan canyon, 0.2 mi. W. of Riverside Co. line. 274 Comment
  RSA30495  Ceanothus spinosus L. R. Abrams 1901-6-16 1854 Orange Trabuco Canon. Comment
  UC729696  Ceanothus tomentosus Carl B. Wolf 1932-3-8 2693 Orange West Base of Santa Ana Mountains, Santiago Creek, 1 mile E of Villa Park 152 Comment
  SD247720  Ceanothus tomentosus R. F. Thorne, C. W. Tilforth, E. W. Lathrop. 1977-4-27 49676 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 456 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
  IRVC27931  Celtis sinensis A. C. Sanders, Mark A. Elvin 2003-10-12 27326 Orange Irvine; UCI Arboretum, UCI campus near intersection of Jamboree Blvd and Campus Dr. Southern Coastal 15 Comment
  SD254510  Cenchrus clandestinus D. E. Bramlet 2009-11-20 4416 Orange South Coast: San Diego Creek between Irvine and Newport Back Bay. 3 Comment
  UCR106276  Centaurea melitensis B. G. Pitzer, M. Georgiady 1997-4-5 3089 Orange San Joaquin Hills, Crystal Cove State Park, portion across highway on the beach, bluffs immediately above beach and adjacent terraces for southeast end of park. 24 Comment
  RSA788969  Centaurium venustum Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49576 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  RSA16384  Centaurium venustum E. R. Johnson 1935-6-11 7132 Orange Rancho Santa Ana, Santa Ana Canyon, grain field west of grapefruit orchard. 137 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-BC123545  Centromadia parryi subsp. australis David Daniels Keck 1933-9-29 2537 Orange Seal Beach. Comment
  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
  UCD20136  Centromadia parryi subsp. australis Donald W. Kyhos 1962-9-23 62- 225 Orange Along Pacific Coast Highway and Balboa Drive, about 1 mile south of Los Angeles- Orange County line. 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
  IRVC25032  Cerastium fontanum subsp. vulgare Fred M. Roberts 1986-8-26 3086 Orange University of California campus, Alderich Park just north of Engineering Building; Irvine 26 Comment
  UCR191437  Cerastium glomeratum A. C. Sanders, Fred M. Roberts 2008-4-8 34731 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  UCR111727  Ceratonia siliqua H. Camp 2000-1-18 s.n. Orange Peninsular Range; Santa Ana Mtns., Caspers Regional Park, 12 mi. east of I-5 in San Juan Capistrano, along Ortega Hwy (Hwy 74), San Juan Creek close to Forest Service boundary and the hot springs 213 Comment
  RSA16975  Cercocarpus betuloides E. R. Johnson 1936-4-10 7766 Orange Santa Ana Canyon, Rancho Santa Ana, toward the head of box canyon to the north of the pear orchard. 168 Comment
  RSA708722  Cercocarpus betuloides Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6226 Orange west slope of Modjeska Peak, Harding Canyon watershed, Main Divide Road, 0.46km W summit. 1670 Comment
  RSA734966  Cercocarpus betuloides A. C. Sanders, Fred M. Roberts, A. O'Neal, D. E. Bramlet 2008-5-9 35304 Orange Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  UCR231186  Cercocarpus betuloides A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39938 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1125 Comment
  CAS-BOT-BC142124  Cercocarpus betuloides var. betuloides E. R. Johnson 1929-4-11 1261 Orange Sierra Peak Trail, Santa Ana Mts. Comment
  CHSC116477  Cercocarpus betuloides var. betuloides R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49704 Orange Northern Santa Ana Mountains: Sierra Peak. 900 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
  SD225727  Chaenactis artemisiifolia R. K. Brummitt 1998-5-23 19996 Orange 22 km NE of San Juan Capistrano on Rte. 74; dry roadisde in rocky canyon 299 Comment
  RSA734852  Chaenactis glabriuscula A. C. Sanders, Mitch Provance 2008-5-20 35415 Orange Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 345 Comment
  SEINET2028646 Image available Chaenactis glabriuscula Lawrence M. Booth 1932-5-18 1056 Orange Newport Bay Comment
  UCR191239  Chaenactis glabriuscula A. C. Sanders, Fred M. Roberts 2008-4-22 34989 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
  RSA695673  Chaenactis glabriuscula L. C. Hull 1934-4-29 s.n Orange Trabuco Canyon Comment
  HSC5295  Chaenactis glabriuscula var. glabriuscula J. W. Johnson 1961-3-29 Orange Newport Beach Comment
  RSA749520  Chaenactis glabriuscula var. glabriuscula Fred M. Roberts, David E. Bramlet, Megan Lulow 2008-4-4 6845 Orange Lomas de Santiago: Loma Ridge, along East Lomas Ridge Rd., 0.7 km E Bee Peak, Irvine Ranch Conservancy. 509 Comment
  IRVC597  Chaenactis glabriuscula var. glabriuscula E. Cowper 1965-4-26 Orange Corona del Mar, Corona del Mar High School. Newport Beach Comment
  RSA0008381  Chaenactis glabriuscula var. orcuttiana F. W. Peirson 1924-5-31 4671 Orange 5 miles southeast of Laguna Beach. Comment
  RSA794564  Chamaecytisus prolifer Justin M. Wood 2010-3-31 1452 Orange Santa Ana Canyon: Chino Hills State Park property just west of Green River Golf Course on bluff south of the river. 131 Comment
  RSA265770  Chamaesyce maculata J. C. Roos 1937-5-21 2066 Orange Grounds of St. Joseph's Hospital, Orange. Comment
  RSA602208  Chamaesyce maculata L. C. Wheeler 1945-5-20 6047 Orange Rancho Santa Ana Botanic Garden: In front of assembly hall. Comment
  RSA702691  Chamaesyce polycarpa Scott D. White, Michael Honer 2004-5-17 10394 Orange South Coast: City of Laguna Niguel. Ridges and open slopes directly north of the intersection of Crown Valley Parkway and Pacific Island Dr. 61 Comment
  RSA788248  Chamaesyce polycarpa var. polycarpa R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49624 Orange Santa Ana Mountains: along Ortega Highway (74), about 1/4 mile above San Juan Fire Station Comment
  UCR141343  Chasmanthe aethiopica Robert DeRuff 1999-1 515 Orange Southern Coast, Newport Beach, Newport Back Bay, bluff below Eastbluff North, c. a third of the way down from the bluff top 6 Comment
  RSA685668  Cheilanthes clevelandii T. R. Pray 1956-4-15 1047 Orange San Juan Canyon. Comment
  UCSB48215  Cheilanthes covillei Roberts, Fred 1981-5-3 Orange Santa Ana Mtns.: Lower Hot Springs Canyon, 0.7km by road N of San Juan Guard Station 244 Comment
  SEINET10793773  Cheilanthes newberryi George Yatskievych, K. G. Preston, Mafham 1981-4-26 Yatskievych 81 -145 Orange 10.9 miles W of El Carizo Guard Station. San Juan Canyon in S-facing cliff area. Santa Ana Mountains. 488 Comment
  RSA731927  Chenopodium album Fred M. Roberts, Sandy Leatherman 2007-11-27 6683 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. ca. 0.3 km S Fairmont Blvd. 118 Comment
  SD236265  Chenopodium album A. C. Sanders, Fred M. Roberts 2008-9-18 36065 Orange Peninsular Range; Santa Ana Mtns Foothills: Lomas de Santiago, Santiago Creek Canyon ca. 1 mile above the highway bridge (El Roro 7.5'Q) 320 Comment
  SEINET11940524  Chenopodium album J. F. Bright, Wyman, C. 1933-1 8178 Orange Deltoro Comment
  POM678  Chenopodium ambrosioides D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon. Comment
  UCR197684  Chenopodium ambrosioides A. C. Sanders, Fred M. Roberts 2008-9-18 36062 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  RSA423411  Chenopodium ambrosioides Albert J. Perkins 1923-6-17 s.n. Orange Sycamore St., Santa Ana. Comment
  RSA791869  Chenopodium berlandieri var. sinuatum R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49647 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. Comment
  RSA687520  Chenopodium californicum Fred M. Roberts, D. E. Bramlet 2003-4-10 5648 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, ridge between Cristianitos Cyn. and Segunda Deshecha Canada, 1.54km W Gato Gate and 1.59km NW Edison substation. 262 Comment
  UCR191466  Chenopodium californicum A. C. Sanders, Fred M. Roberts 2008-4-8 34774 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
  CDA20835  Chenopodium murale P. Akers 2006-3-25 PA 9 -06 Orange Peninsular Ranges; Yorba Linda. Santa Ana River S of La Palma Dr, 0.6-0.9 mi E of Yorba Linda Dr. 121 Comment
  IRVC395  Chenopodium murale E. P. Cowper 1965-5-6 Orange Corona del Mar High School. Newport Beach Comment
  IRVC398  Chenopodium murale J. Morgan 1965-2-5 Orange Corona del Mar High School. Newport Beach Comment
  OBI7967  Chenopodium murale Kurt R. Neisess 1975-12-19 s.n. Orange In Yorba Linda Comment
  SEINET6652877 Image available Chenopodium murale T. C. Arambula 1966-1 7 Orange Fullerton, North side of Carolina Ave. & Brea-Olinda Blvd, east of Fullerton Comment
  UCR237824  Chenopodium murale Mark A. Elvin 2003-2-2 2281 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  UCR99873  Chenopodium murale Scott D. White 1993-3-5 1113 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  IRVC25223  Chenopodium rubrum Roger Rienke 1988-10-30 2 Orange Newport Back Bay Newport Beach Comment
  RSA788905  Chlorogalum pomeridianum var. pomeridianum Fred M. Roberts 2008-6-12 7045 Orange Lomas de Santiago: Loma Ridge Road north of Haul Rd., 2.6 km NW Bee Peak, Irvine Ranch Land Conservancy. 417 Comment
  UC1618038  Chorizanthe Donald G. Nelson 1935-4-14 292 Orange near Pacific Electric Railway Station Newport Beach Comment
  RSA0004894  Chorizanthe chrysacantha var. compacta F. M. Reed 1928-4-27 5700 Orange Beach bluff, between Laguna and Newport Comment
  RSA450089  Chorizanthe fimbriata J. C. Roos 1965-6-16 s.n. Orange Dana Point near Doheney Beach. Comment
  POM256711  Chorizanthe fimbriata W. Pequegnat 1940-6-12 s.n. Orange Los Puios Portrero. 915 Comment
  CAS-BOT-BC252772  Chorizanthe parryi var. fernandina Helen D. Geis 1902-1-1 541 Orange Santa Ana Comment
  RSA655025  Chorizanthe procumbens D. E. Bramlet 1994-6-23 s.n. Orange San Joaquin Hills. ''Pass area'' between Little Sycamore and Camarillo Canyons. The site is 945m of Camarillo Canyon Road and 5 m west of the existing dirt road. 122 Comment
  RSA743372  Chorizanthe procumbens Fred M. Roberts 2008-4-2 6842 Orange Dana Point: Dana Point Headlands, CNLM Preserve south of NE Gate, 0.5 km W Marine Institute (Dana Point Harbor). 45 Comment
  CAS-BOT-BC255255  Chorizanthe staticoides John Thomas Howell 1927-6-8 2461 Orange Southern Puente Hills in the Santa Ana Canyon 228 Comment
  CLARK-A1528-3607  Chorizanthe staticoides John C. Roos 1937-5-21 1804 Orange Lemon Heights Comment
  POM17832  Chorizanthe staticoides P. A. Munz, D. D. Keck 1923-6-14 7066 Orange Glen Ivy Trail to Santiago Peak, Santa Ana Mountains 1128 Comment
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Apr 1 2013
  POM50441  Chorizanthe staticoides L. R. Abrams 1901-06 1807 Orange Mt. Santiago 915 Comment
  RSA702986  Chorizanthe staticoides D. E. Bramlet, Fred Roberts 2003-5-1 3424 Orange Donna O'Neill Reserve. Drainage north of the North Ridge trail, 457m west of Cristianitos Rd. and 1.2km north of the E-W access road. 134 Comment
  RSA749998  Chorizanthe staticoides A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35328 Orange Weir Canyon, 0.3 mi. west of Eastern Transportation Corridor (Hwy 241) and 1.45 mi. east of south end of Walnut Canyon Reservoir 335 Comment
  RSA0004910  Chorizanthe staticoides var. elata P. A. Munz 1923-6-14 7085 Orange Glen dry trail to Santiago Peak , Santa Ana Mountains, dry ridge in chaparral belt. 1463 Comment
  CAS-BOT-BC502067  Chrysanthemoides monilifera R. E. Riefner, Jr. 2011-11-26 11 -162 Orange City of Laguna Beach, W side of Paific Coast Hwy, N bank of Aliso Creek next to residential garden 5 Comment
  IRVC23283  Chrysanthemum coronarium Karlin G. Marsh 1987-4-24 Orange east side of Hwy 74 along Carrillo Rd., near park boundary; roadside. Casper's Regional Park Comment
  SEINET2049585 Image available Chrysanthemum coronarium Cesareo Perez 1971-5-12 Orange California State Parks, Huntington State Beach Pacific Coast Highway & Brookhurst, Huntington Beach. 0 Comment
  RSA94926  Cirsium arvense F. W. Peirson 1924-10-19 5248 Orange Wintersberg. Comment
  IRVC9122  Cirsium occidentale var. occidentale R. Yarnell 1966-4-13 74 Orange Santa Ana Canyon, old RSA Botanical Gardens site. Chino Hills Comment
  CAS-BOT-BC285735  Cirsium vulgare Ira L. Wiggins 1965-11-3 20311 Orange East side of California State College at Fullerton campus, near Placentia Avenue, Fullerton 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
  UCSB48231  Cirsium vulgare Roberts, Fred 1981-5-2 Orange Mission Viejo; Camino Capistrano, 1.5 km. N Crown Valley Parkway 49 Comment
  RSA569735  Cistanthe monandra A. S. Boughey 153 Orange Santa Ana Mountains: Ortega Hwy., ca. 1 mi. east of San Juan Guard Sta. Comment
  RSA67766  Clarkia bottae G. R. Campbell 1951-5-30 16078 Orange San Juan Canyon, Ortega Hwy, 4 mi. inside west border of Cleveland National Forest 152 Comment
  UCR210037  Clarkia bottae R. E. Riefner Jr. 2000-6-30 20- 597 Orange Santa Ana Mountains, North Ranch Policy Plan Area, N Fremont Canyon at Donaldson Ranch, adjacent to powerline crossing on W fork of Fremont Cyn drainage 427 Comment
  UCR237809  Clarkia bottae Dick Newell, Don Millar 2012-6-5 267 Orange Peninsular Range; Santa Ana Mtns., Loma Ridge East, 0.35 mi. due east of Hicks Haul Rd. 411 Comment
  RSA751313  Clarkia purpurea A. C. Sanders, Fred M. Roberts 2008-5-6 35275 Orange Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 366 Comment
  POM256966  Clarkia purpurea subsp. quadrivulnera W. Pequegnat 1940-6-15 s.n. Orange Santa Ana Mountains: Modjeska Flat. 1372 Comment
  RSA637490  Clarkia purpurea subsp. quadrivulnera Valerie L. Soza, LeRoy Gross 1999-6-8 507 Orange Santa Ana Mountains: Santiago and Modjeska Canyons, above Tucker Wildlife Sanctuary, above the town of Modjeska 518 Comment
  RSA797818  Claytonia perfoliata R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49807 Orange Santa Ana Mountains: Trabuco Canyon Comment
  CAS-BOT-BC439946  Claytonia perfoliata subsp. mexicana Helen D. Geis 1904-4-1 742 Orange Silverado Canon [Canyon], Santa Ana Mountains Comment
  UC2042140  Clematis lasiantha R. F. Thorne and C. W. Tilforth, E. W. Lathrop 1977-4-27 49689 Orange Northern Santa Ana Mountains: Sierra Peak. Comment
  LA207215  Clematis pauciflora W. E. Pequegnat; August 1937 58 Orange Santa Ana Mts Comment
  UCR256937  Clinopodium chandleri Naomi Fraga, Duncan S. Bell 2009-5-11 2721 Orange Peninsular Range; Santa Ana Mountains, Chiquita Trail, Lion Canyon 762 Comment
  RSA408308  Collinsia heterophylla A. M. Johnson 1934-4-15 4402 Orange Carmen's Laguna Beach. Comment
  RSA305753  Collinsia heterophylla James R. Shevock 1313 Orange Newport Beach Bay. 11 Comment
  SD245358  Comarostaphylis diversifolia subsp. diversifolia R. R. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49607 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Base of bllluff with lower slope wet with seepage. Comment
  UCSB52879  Comarostaphylis diversifolia subsp. planifolia Roberts, Fred 1983-4-7 Orange Laguna Niguel; Niguel Hill, above Pacific Island Road, 1.7 km. SE Aliso Peak; 3.0 km. SSW Alicia Fire Station 239 Comment
  SD127479  Conium maculatum Reid Moran, Gordon Marsh and Jack Reveal 1977-6-13 24237 Orange Willow Canyon, tributary of Laguna Canyon 124 Comment
  RSA470554  Conium maculatum Albert J. Perkins 1914-6-20 s.n. Orange Santa Ana. Comment
  IRVC969  Convolvulus arvensis L. Stilgenbauer 1965-5-5 Orange Corona del Mar High School. Newport Beach Comment
  RSA643431  Convolvulus arvensis R. D. Goeden, D. W. Ricker 1965-6-15 s.n. Orange Santiago Blvd., Villa Park. 91 Comment
  RSA653183  Convolvulus arvensis David Barrios 1991-5-1 16 Orange Yorba Linda, 1500 ft. northwest of Fairmont Ave and Quail Circle., (117 deg. 45' 00'' +4 28 / 33 deg. 52' 37'' + 37 51.5). 365 Comment
  SD143550  Convolvulus arvensis R. D. Goeden, D. W. Ricker 1965-6-15 12481 UC Orange Northwest of El Toro: Tustin Township, near Borrego Canyon Wash, southeast edge of El Toro Marine Corps Air Station. 106 Comment
  POM312786  Convolvulus arvensis D. Taylor 1952-10 327 Orange South of Chino near C I M Comment
  UCR85393  Convolvulus simulans H. Camp 1995-4-14 s.n. Orange Peninsular Range; Santa Ana Mtns., Caspers Park, 7 mi. east of San Juan Capistrano, west of Bell Creek 183 Comment
  UCR193007  Conyza bonariensis A. C. Sanders 2008-5-28 35442 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  IRVC25164  Conyza canadensis Fred M. Roberts 1986-9-3 3141 Orange adjacent to Anaheim, between Yorba Linda Regional Park and Imperial Hwy, Santa Ana River 88 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
  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
  POM4592  Conyza coulteri I. M. Johnston 1918-9-3 2148 Orange Laguna Canyon (at the lakes) 107 Comment
  UCR241916  Conyza coulteri Fred M. Roberts, Lee Ann Caranza 2009-9-23 7162 Orange Southern Coastal Plain, Dana Point, Dana Point Headlands, CNLM Dana Point Preserve, old Marguerite Road bed just west of the Nature Center and just east of the terminus of Dana Strands Road, 0.7 km west pier, Dana Point Harbor 73 Comment
  CHSC22354  Cordylanthus maritimus Robert A. Schlising 1972-5-1 3017 Orange Upper Newport Bay, east of Costa Mesa; saltmarsh along Bayside Drive. Comment
  SBBG68641  Cordylanthus maritimus subsp. maritimus M. N. Ackley -May-1929 Orange Sunset Beach Comment
  UC537013  Cordylanthus maritimus subsp. maritimus Lawrence M. Booth 1932-7-19 1273 Orange Bolsas Marsh Comment
  RSA733933  Cordylanthus rigidus Keith E. Hoffmaster 1934-7-15 118 Orange Santa Ana Mts (Modjeska) Comment
  UCR193827  Cordylanthus rigidus A. C. Sanders, Fred M. Roberts 2008-7-16 35852 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  RSA711  Cordylanthus rigidus subsp. setiger J. T. Howell 1927-7-29 518 Orange Near east boundary of Rancho Santa Ana. 213 Comment
  RSA712  Cordylanthus rigidus subsp. setiger J. T. Howell 1927-6-26 218 Orange Claymine Canyon near Sierra Peak 366 Comment
  CAS-BOT-BC287841  Coreopsis californica Miss. Helen D. Geis 1904-4-1 732 Orange Silverado Canon, Santa Ana Mts Comment
  CAS-BOT-BC101296  Corethrogyne filaginifolia Carl B. Wolf 1933-8-24 5394 Orange Santa Ana Mts. Summit of Santiago Pk. 1731 Comment
  RSA699554  Corethrogyne filaginifolia L. C. Hull 1934-4-15 s.n. Orange Laguna Hills Comment
  JEPS14133  Coriandrum sativum Alice King March 1908 Orange Anaheim Comment
  UCR100215  Coronopus didymus Scott D. White 1993-3-5 1112 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  UCR193622  Coronopus didymus A. C. Sanders, T. B. Salvato 2008-5-13 35374 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
  UCR210374  Coronopus didymus T. B. Salvato, Billy Deane 2006-10-16 1935 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  UCR68986  Cortaderia selloana A. C. Sanders 1990-10-6 10196 Orange Newport Bay, North Star County Beach Area on the SW end of the Bay, c. 2 km inland of Hwy 1. 3 Comment
  UCR193017  Cotula australis A. C. Sanders, Mitch Provance 2008-5-20 35413 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  RSA696050  Cotula australis Kenneth Beard 1934-03 s.n. Orange Beneath tree on High School campus. Comment
  CDA20829  Cotula coronopifolia P. Akers 2006-3-25 PA 3 -06 Orange Peninsular Ranges; Yorba Linda, N edge of Santa Ana River. S of La Palma Dr, 0.5-0.8 mi E of Yorba Linda Dr. 121 Comment
  RSA696048  Cotula coronopifolia Jeanne Paxton 1934-4-10 s.n. Orange Marshy land near S. A Country Club Comment
  UCSB44179  Cotula coronopifolia Hennema, J. 1977-5-21 Orange Newport Back Bay 6 Comment
  CDA7469  Cotula hispida R. E. Riefner Jr. 2006-2-12 26 -Jun Orange City of San Clemente, north ca. 0.5 mile along the beach from Avenue Del Mar / San Clemente Pier area. Comment
  SD234933  Cotyledon orbiculata R. E. Riefner Jr. 2006-8-25 06 407 Orange South Coast: Dana Point Harbor Dr. at Ensenada Pl. 13 Comment
  SEINET6911850  Crassula connata var. connata W. P. Vestal, A. G. Vestal 1955-3-24 3452 Orange Trabuco Canyon about 5 miles east of El Toro. Comment
  RSA3190  Crassula connata var. erectoides C. B. Wolf 1932-3-8 s.n. Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  RSA752041  Crassula tillaea Fred M. Roberts 2008-3-27 6807 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  POM3584  Cressa truxillensis D. L. Crawford s.n. Orange Laguna Beach Comment
  RSA542645  Cressa truxillensis Fred M. Roberts, Kathy Keane, Carol A. Roberts 1988-5-25 4580 Orange Ranch Mission Viejo: Lower Canada Chiquita, 2.4 kilometers SSE Medium Rancho Survey Mark. 69 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
  UCD169755  Crocanthemum aldersonii R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49679 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 457 Comment
  RSA697577  Croton californicus Kenneth Beard s.n. Orange Bank of S. A. River. Comment
  UCR123430  Crypsis schoenoides G. James 1968-10-1 s.n. Orange Huntington Beach, near Beach Boulevard and Adams Boulevard. Comment
  RSA713393  Crypsis schoenoides R. E. Riefner 2005-10-5 5 -706 Orange City of Yorba Linda, Santa Ana River bottom, N flood plain, near Yorba Linda Regional Park. 98 Comment
  CAS-BOT-BC189254  Cryptantha Mark A. Elvin 2003-1-26 2247 Orange Between core of UCI campus (E Peltason Dr) and Highway 73, NE side UC Irvine Open Space Preserve, Irvine, South Coast 1000 Comment
  UCR150922  Cryptantha clevelandii Valerie Soza, LeRoy Gross 1999-6-7 479 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 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
  UCR267187  Cryptantha clevelandii Fred M. Roberts 2010-3-12 7179 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
  UCR263635  Cryptantha clevelandii var. clevelandii Ed Kentner 2012-4-24 130 Orange Peninsular Range: Santa Ana Mountains, Lomas De Santiago, El Toro property 200 Comment
  RSA0094682  Cryptantha clevelandii var. florosa G. R. Campbell 1951-5-30 16096 Orange San Juan Canyon, Ortega Hwy, 4 mi. inside west border of Cleveland National Forest. 152 Comment
  RSA0094683  Cryptantha clevelandii var. florosa F. M. Reed 1925-5-14 4986 Orange Aliso Canon. Comment
  RSA542657  Cryptantha intermedia Fred M. Roberts 1988-4-10 3902 Orange Lomas De Santiago: Loma Ridge, Upper Limestone Canyon, c.a. 3.2 kilometer NNW Bolero Lookout. 347 Comment
  RSA678721  Cryptantha intermedia Fred M. Roberts, Robert Allen, Carol Roberts 2003-5-11 s.n. Orange Dana Point Headlands: 0.8km SSW Richard Henry Dana School north of Marguerita Drive 76 Comment
  PASA1983  Cryptantha intermedia Frank W. Peirson 1923-3-26 Orange Canada Salada. Near sea level Comment
  RSA0127598  Cryptantha microstachys Fred M. Roberts, Diane Etchison 2016-3-22 8028 Orange Lomas de Santiago: west of Irvine Lake and north of Santiago Canyon Road, southeastern slope of Hill 1332 near toe of slope, about 1.9km S Irvine Lake Dam spillway. 263 Comment
  RSA539399  Cryptantha microstachys Fred M. Roberts, Carol A. Roberts 1988-6-2 4038 Orange Santa Ana Mtns: Silverado Canyon, Maple Springs Truck Trail, 4.3km above gate. 1.0km WSW Bald Peak. 817 Comment
  RSA732272  Cryptantha microstachys A. C. Sanders 2008-4-29 35127 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
  RSA733630  Cryptantha microstachys Keith E. Hoffmaster 1935-5-5 620 Orange San Juan Canyon., Santa Ana Mts. Comment
  UCR191223  Cryptantha microstachys A. C. Sanders 2008-4-29 35127 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  UCR209368  Cryptantha microstachys Fred M. Roberts, Linda Farley 2008-3-28 6829 Orange Santa Ana Mountains, Upper Weir Canyon, Irvine Ranch Conservancy, 3.3 km east-northeast of Robbers Peak on ridge north of canyon 427 Comment
  UCR47757  Cryptantha microstachys F. R. Fosberg 1930-6-15 S- 02937 Orange Santa Ana Mtns, Santiago Canyon, near Modjeska's home. Comment
  IRVC20157  Cryptantha muricata var. muricata R. L. Allen 1977-4-16 Orange 0.7km N La Novia bridge; west of water path. San Juan Capistrano Comment
  CAS-BOT-BC538092  Cupaniopsis anacardioides R. E. Riefner, Jr. 2012-6-30 12 -286 Orange City of Costa Mesa, Talbert Regional Park, general vicinity of Balboa Blvd. and 19th St 5 Comment
  MACF018551  Cupressus forbesii Ken Zysk 1971-3-29 P 80 Orange Collected at Harding Canyon, off Harding Canyon Rd. 396-1402 Comment
  RSA17652  Cupressus forbesii C. B. Wolf 1935-1-2 6279 Orange Slopes of Sierra Peak, west of Claymine Canyon, along road to Peak. 670 Comment
  RSA7202  Cupressus forbesii B. D. Stark 1933-3-17 4532 -B Orange Claymine Canyon, Santa Ana Mts. 609 Comment
  UC1281345  Cupressus forbesii H. E. McMinn 1935-6-22 3926 Orange at head Clay Mine Canyon (n end of Santa Ana Mts.); Santa Ana Mts., Clay Mine Canyon Comment
  SEINET10531085  Cupressus forbesii Carl B. Wolf 1935-1-2 Wolf 2320 Orange Santa Ana Mts. Slopes of Sierra Peak W of Claymine Canyon along road to peak. Upper Sonoran:- Adenostoma, Cypress. Open N.W. slope, reddish sandstone. 670 Comment
  CAS-BOT-BC80681  Cupressus guadalupensis var. forbesii C. B. Wolf 1935-1-2 6279 Orange Santa Ana Mts., slopes of Sierra Peak, W. of [Claymine] Clay Mine Canyon along road to peak 670 Comment
  NY16670  Cupressus guadalupensis var. forbesii C. B. Wolf 1935-1-2 6279 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
  UCR186680  Cuscuta T. B. Salvato, Katie Kurtz 2006-10-15 1913 Orange South Coast, Irvine, San Diego Creek flood control channel, near Michelson Drive and Harvard Avenue 6 Comment
  RSA562766  Cuscuta californica Steve Boyd, Timothy S. Ross 1992-5-19 7420 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
  RSA697161  Cuscuta californica R. H. McArthur 1934-5-19 s.n. Orange Live oak Canyon. Comment
  RSA788244  Cuscuta californica R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49628 Orange Santa Ana Mountains: San Juan Canyon, along Ortega Highway (74) across from San Juan Fire Station Comment
  UC284233  Cuscuta californica P. A. Munz 1923-7-8 7330 Orange Santa Ana River Comment
  JEPS47118  Cuscuta salina L. M. Booth Oct 1933 Orange Newport Comment
  RSA201912  Cuscuta salina L. M. Booth 1933-10 s.n. Orange Newport Comment
  RSA5950  Cuscuta salina C. B. Wolf 1932-7-7 3844 Orange Bixby Ave., 0.6 mile W of Hansen road. 8 Comment
  UCR18223  Cuscuta salina Chuck Schneibeck 1974-7-9 s.n. Orange South Coast, Newport Back Bay 8 Comment
  RSA751521  Cuscuta subinclusa A. C. Sanders, Fred M. Roberts 2008-8-7 35992 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  UCSB52888  Cuscuta subinclusa Roberts, Fred 1983-9-26 Orange Santa Ana Mtns.: Lion Canyon, Chiquito Basin Trail; 3.5 km. NNE Lower San Juan Picnic Ground; 4.2 km. SSE Los Pinos Peak 815 Comment
  POM48696  Cycloloma atriplicifolium I. M. Johnston 1924-8-29 s.n. Orange Santa Ana River bed, between Aneheim and Santa Ana Comment
  CHSC106006  Cyclospermum leptophyllum Robt. Allen 2008-4-9 Orange Irvine Valley College, N of N entrance to Student Services building. UTM Zone 11S; 3726442N 0427963E. 45 Comment
  JEPS66891  Cylindropuntia prolifera L. M. Booth 1933-10-24 Orange Newport Comment
  RSA30240  Cynara cardunculus subsp. flavescens Elisabeth Norland 1942-8-12 11296 Orange 2 miles SW of Costa Mesa near jct of 17th Street and Hwy 101. Comment
  CAS-BOT-BC190297  Cynodon dactylon Ira L. Wiggins 1965-9-26 20253 Orange In Carbon Canyon about 3.5 miles above its mouth. Comment
  RSA650406  Cynodon dactylon Norman Willis 1948-2-8 s.n. Orange East of Orange. 61 Comment
  UCD60023  Cynodon dactylon Collector Unknown 1924-6-1 s.n. Orange De Tarr. Comment
  SEINET11750782  Cyperus eragrostis S. A. Thompson, Rawlins, J. E. 1988-1 5256 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  SEINET7581659 Image available Cyperus eragrostis Sue A. Thompson, John E. Rawlins 1988-8-27 5256 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74. 370 Comment
  POM12447  Cyperus erythrorhizos Phillip A. Munz 1922-9-2 6359 -A Orange Laguna Lakes. 46 Comment
  CAS-BOT-BC114318  Cyperus esculentus LeRoy Abrams 1901-6-1 1758 Orange Santa Ana River. Comment
  CAS-BOT-BC114322  Cyperus esculentus John Thomas Howell 1927-7-18 2794 Orange Santa Ana River bottom, Santa Ana Canyon. 152 Comment
  CAS-BOT-BC114323  Cyperus esculentus L. M. Booth 1932-7-25 1310 Orange Santa Ana River 1 1/2 mi from ocean. Comment
  RSA92102  Cyperus esculentus F. W. Peirson 1923-9-6 4032 Orange Along canal east of Olive. Comment
  RSA715698  Cyperus involucratus Fred M. Roberts, Chris M. Barnhill 2005-9-27 6279 Orange San Juan Capistrano: San Juan Creek wash, east of La Novia Road bridge, 1.4km E Mission San Juan Capistrano, 27 Comment
  RSA731800  Cyperus involucratus Fred M. Roberts, Sandy Leatherman 2007-11-9 6641 Orange Santa Ana Mtns.: San Juan Canyon along San Juan Creek, 0.2km E community of San Juan Hot Springs. 222 Comment
  UCR194990  Cyperus involucratus A. C. Sanders, Fred M. Roberts 2008-8-7 35999 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  UC729958  Cyperus laevigatus Carl B. Wolf 1932-7-2 3812 Orange 1/8 mi. below La Vida Springs (Carbon Canyon); Carbon Canyon 213 Comment
  UCR64632  Cyperus niger F. W. Peirson 1924-10-19 5231 Orange Wintersberg. Comment
  CAS-BOT-BC537198  Cyperus niger R. F. Thorne 1977-11-21 49999 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  RSA713567  Cyperus odoratus R. E. Riefner Jr. 2005-7-9 5 -551 Orange City of Huntington Beach, Huntington Central Park, Goldenwest St. near Slater Ave. 2 Comment
  RSA739276  Cyrtomium falcatum R. E. Riefner 2009-1-3 83 Orange Orange County: city of Newport Beach, N Star Beach, vicinity of N Star Ln and White Cliffs Dr. 4 Comment
Read comments
Dec 20 2012
  SD260851  Cyrtomium falcatum R. E. Jr. Riefner 2012-1-16 12 5 Orange City of Newport Beach, Corona Del Mar, beach area west of Morning Canyon Road. 0 Comment
  SD28072  Dactylis glomerata Carl B. Wolf 1932-6-13 3715 Orange Fullerton, Rose Drive 53 Comment
  UC729651  Dactylis glomerata Carl B. Wolf 1932-6-13 3715 Orange Fullerton; Rose Drive 53 Comment
  RSA697679  Dactylis glomerata J. Russell Bruff 1936-06 s.n. Orange Santa Ana. Comment
  RSA700549  Dalea mollissima Mary Edmunds 1932-3-29 s.n. Orange Oasis Comment
  UCR240083  Datisca glomerata Dick Newell, Judy Booth 2012-6-3 266 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Maple Springs Truck Trail/Silverado Canyon Rd., 1.6 miles ENE of Maple Springs Gate 741 Comment
  CHSC116491  Datisca glomerata R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49563 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  SEINET8731612 Image available Datura meteloides Jean Coulson 1959-1 s.n. Orange Santa Anna Mts.; 2.1 miles E. on Esperanz Road from Orangethorpe. On S. side of road. Comment
  RSA542375  Datura stramonium Fred M. Roberts Jr., Gordon Marsh 1987-8-31 3600 Orange Santa Ana River: adjacent to Santa Ana, 0.5 km NE 17th St. bridge. 27 Comment
  RSA421914  Datura wrightii N. C. Cooper 1942-11-9 886 Orange Balboa. Comment
  RSA702205  Datura wrightii Fred M. Roberts, David E. Bramlet 2003-6-20 5920 Orange Rancho Mission Viejo; Donna O'Neil Land Conservancy tributary to Cristianitos Cyn, along Back Road, 1.4 km WNW Sycamore Gate. 189 Comment
  RSA651331  Datura wrightii Candye Koehler 1981-4-11 81 -4 Orange Carbon Canyon Rd. #142 3.3mi. W. of Sleepy Hollow. 244 Comment
  UCR191224  Daucus pusillus A. C. Sanders 2008-4-29 35126 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
  UC579523  Deinandra fasciculata A. Lewis 1934-4-1 403 Orange Canada Gubernadora Corona Quadrangle, Canada Gubernadora 579 Comment
  CAS-BOT-BC299330  Deinandra fasciculata H. M. Hall 1930-11-4 12994 Orange South of Capistrano on mesa about one mile from the sea Comment
  OBI74758  Deinandra paniculata Unknown 2003-8-31 03 -337 Orange San Clemente State Beach, mima mound field in SW corner of park 27 Comment
Read comments
Feb 23 2018
  RSA703199  Deinandra paniculata R. E. Riefner Jr. 2004-7-6 04 -302 Orange Upper Chiquita Canyon, vicinity of Oso Pkwy. and SR-241. 224 Comment
  SFV3981  Deinandra paniculata A. M. Johnson 1932-4-23 4006 Orange Dry hills north of Orange. Comment
  UCR274558  Deinandra paniculata R. E. Riefner Jr. 2014-6-3 14- 144 Orange City of Laguna Beach, Moulton Meadows, NE 0.1 mi. from Del Mar Ave. and Balboa Ave. along Mentally Sensitive Trail 266 Comment
  RSA6131  Delphinium cardinale E. R. Johnson 1932-6-14 s.n. Orange Edge of Rancho Santa Ana, Santa Ana Canyon. Alt. 450 ft. 137 Comment
  UCSB50633  Delphinium cardinale Roberts, Fred 1982-7-9 Orange Santa Ana Mtns; c.a. 2.3km by road W Hwy 74 on forestry road; 2.5km WSW El Cariso Guard Station 925 Comment
  CAS-BOT-BC121420  Delphinium parryi subsp. parryi P. C. Everett 1935-5-19 6871 Orange Santa Ana Mtns., Baker Canyon, West Ladd truck trail 304 Comment
  CAS-BOT-BC116421  Delphinium patens subsp. hepaticoideum C. B. Wolf 1931-3-6 1856 Orange 1/2 mile below Trabuco Camp Ground, Trabuco Canyon, west slope of the Santa Ana Mts. 609 Comment
  RSA785384  Dendromecon rigida Keith E. Hoffmaster 1932-4-17 401 Orange Santa Ana Mts. [Orange/Riverside Cos] Comment
  UCSB41860  Dendromecon rigida Muth, Al 1971-3-29 Orange Harding Road, 10 mi. E. Tucker Wildlife Sanctuary 914 Comment
  RSA171106  Dendromecon rigida subsp. rigida Robert F. Thorne 1963-7-26 32833 Orange Santa Ana Mts., Cleveland National Forest, Trabugo District. 1189 Comment
  UCR239910  Descurainia pinnata O. F. Clarke 2004-4-5 s.n. Orange South Coast, Newport Back Bay 3 Comment
  UCR261716  Descurainia pinnata Dick Newell, Judy Booth, Don Millar 2015-2-18 389 Orange South Coast, Newport Beach, New Delhi Channel near end of University Drive 4 Comment
  RSA16418  Dicentra chrysantha Percy C. Everett 1935-5-19 6870 Orange Santa Ana Mountains, Baker Canyon, West Ladd Truck trail. 305 Comment
  POM172076  Dicentra ochroleuca Unspecified 1930-04 s.n. Orange Santa Ana Mts. Comment
  UCR192475  Dichelostemma capitatum A. C. Sanders, Fred M. Roberts 2008-3-25 34543 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR223432  Dichelostemma capitatum Dick Newell, Don Millar 2011-2-8 054 Orange Peninsular Range; Santa Ana Mtns., MWD road overlooking Boy Scout Camp, just east of outdoor education property, 1.5 mi. NW (312 deg. ) of Irvine Lake dam 257 Comment
  RSA114378  Dichelostemma pulchellum var. pulchellum G. R. Campbell 1955-12-6 21492 Orange Nursery Seedlings at Botanic Garden, Prop. No. 6310, from seed coll. by E. K. Balls, May 28, 1949, from plants native to old Botanic Garden site, Santa Ana Canyon 183 Comment
  UCR188938  Dichondra micrantha Robert DeRuff 2006-6-1 313 Orange Newport Beach, Upper Newport Bay, 23rd Street on west side of the Bay 11 Comment
  POM48839  Dichondra occidentalis Stephen Grout 1904-08 s.n. Orange Three Arches, Laguna Comment
  UCR158040  Dichondra occidentalis Adrian Wolf 1998-5-15 288 Orange South Coast, Dana Point Headlands, north of Scenic Dr. 67 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
  UCD64152  Digitaria sanguinalis Beecher Crampton 1965-10-27 7580 Orange 2 miles east of Irvine, Irvine Blvd. Comment
  RSA0062639  Digitaria sanguinalis Jack D. Ingwersen 1962-6-2 s.n. Orange Anaheim. Comment
  SEINET13682959  Diplacus aurantiacus R. Nelson, Baumann, Kondratieff, Sargent 1988-1-12 5117 Orange Cleveland NF, San Juan Creek at Lower San Juan Campground. 366 Comment
  CAS-BOT-BC150283  Diplacus longiflorus B. Pitzer 1996-4-30 2801 Orange Crystal Cove State Park, S of City of Irvine on State Hwy 1 (=Pacific Coast Hwy.) 15 Comment
  RSA0028695  Diplacus longiflorus Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-24 45 Orange 500 ft. west of Chino Hills State Park Boundary. 198 Comment
  RSA715248  Diplotaxis muralis A. C. Sanders 2006-5-6 32250 Orange South Coast: UC Irvine Arboretum, NE side of gardens towards Campus Dr. 15 Comment
  CDA3682  Diplotaxis muralis Johnson, Margaret Bellue Oct 1944 Orange Southern Pacific junction between Anaheim & Orange. 0 Comment
  CAS-BOT-BC43559  Diplotaxis tenuifolia L. R. Abrams 1917-7-5 6601 Orange Tustin. Comment
  CAS-BOT-BC43560  Diplotaxis tenuifolia Helen D. Geis 1902-1-1 544 Orange Santa Ana. Comment
  CAS-BOT-BC43561  Diplotaxis tenuifolia Helen D. Geis 1902-1-1 544 Orange Santa Ana. Comment
  UCD114710  Diplotaxis tenuifolia W. W. Robbins 1931-5-11 2203 Orange Santa Ana. Comment
  POM123  Diplotaxis tenuifolia I. M. Johnston 1918-5-4 1927 Orange Santa Ana, at roadside. Comment
  POM1195  Distichlis spicata D. L. Crawford 1916-7-26 s.n. Orange Aliso Canyon Comment
  UC537120  Distichlis spicata Lawrence M. Booth 1932-5-25 1116 Orange Balboa Island, newport Bay Comment
  UCD64389  Distichlis spicata var. stolonifera A. A. Beetle 1942-4-19 3099 Orange Rt. 101. 5 miles south of Laguna Beach. Comment
  LA208047  Drymocallis glandulosa W. Pequegnat; 1938-6-15 sn Orange Santa Ana Mountains, Santiago Peak 1734 Comment
  UCR250855  Drymocallis glandulosa Dick Newell, Don Millar 2014-3-11 358 Orange South Coast, San Joaquin Hills, Laguna Canyon, Upper Laurel Canyon Trail, 0.24 mi. SE of 73 toll road over-crossing 207 Comment
  POM626  Drymocallis glandulosa var. wrangelliana I. M. Johnston 1918-4-27 1893 Orange Laguna Beach, San Joaquin Hill 15 Comment
  POM366539  Drymocallis glandulosa var. wrangelliana Christopher Davidson 1977-5-18 5633 Orange Santa Ana Mts. Cleveland National Forest, Falcon campground 1006 Comment
  RSA124716  Dryopteris arguta E. K. Balls, Percy C. Everett 1957-11-25 22839 Orange Upper Trabuco Canyon, 2.9 mi. ne. from entrance to Holy Jim canyon, 1097 Comment
  RSA124720  Dryopteris arguta E. K. Balls, Percy C. Everett 1957-11-25 22843 Orange Trabuco Canyon, 1.7 mi. w. of entrance to Holy Jim Canyon, 670 Comment
  UCR215285  Dryopteris arguta Fred M. Roberts 2008-5-14 6962 Orange Lomas de Santiago, Loma Ridge, upper Bee Flat Canyon below Loma Ridge Road, 1.3 km north of Bee Peak and 5.4 km NW of Bolero Lookout. Irvine Ranch Conservancy 337 Comment
  JEPS50033  Dudleya blochmaniae subsp. blochmaniae T. W. Minthorn 1924-5-30 Orange Pt. San Juan (Dana Point) Comment
  RSA423526  Dudleya edulis M. B. Dunkle 1923-06 5374 Orange San Juan Canyon. Comment
  UC933205  Dudleya edulis Reid Moran 1950-4-24 3389 Orange San Clemente Comment
  RSA716782  Dudleya lanceolata Fred M. Roberts, Michelle Balk, Robert Allen, Chris Barnhill 2004-6-19 6063 Orange Santa Ana Mtns.: Holy Jim Cyn.: Holy Jim Trail, 3.1km SE summit of Santiago Peak. 695 Comment
  RSA769617  Dudleya lanceolata E. W. Lathrop 1974-6-27 7423 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  CAS-BOT-BC411410  Dudleya lanceolata Ethel H. Campbell 1921-5-1 2 Orange Laguna Beach Comment
  RSA5410  Dudleya lanceolata C. B. Wolf 1932-12-16 1681 Orange At bar of plumes 0.5 mi. from Skyline Drive on firebreak road to Sierra Peak, Santa Ana Mts. Alt. 2500-3000 ft. 762 Comment
  IRVC27013  Dudleya multicaulis Peter A. Bowler 2003-4-20 s.n. Orange UC San Joaquin Freshwater Marsh Reserve; bluffs along NW edge of marsh. Southern Coastal 9 Comment
  UCR193275  Dudleya multicaulis A. C. Sanders, Fred M. Roberts 2008-6-17 35509 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, Windy Ridge Rd., saddle on ridge at head, above the Eastern Transportation Corridor 400 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
  POM301408  Dudleya stolonifera Reid V. Moran 1949-7-2 3286 Orange Laguna Canyon, 1.7 miles below Toro Road jct. 1.5 miles above canyon mouth 244 Comment
  SBBG96432  Dudleya stolonifera R. Moran 1977-6-13 24230 Orange Willow Cyn, tributary of Laguna Cyn 125 Comment
  UCSB48031  Dudleya viscida Roberts, Fred 1980-7-7 Orange Santa Ana Mtns.; San Juan Canyon, Hwy. 74, 2.3 km. ENE San Juan Guard Station; 0.4 km. W of Bench Mark 1100 315 Comment
  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
  RSA0045610  Echidiocarya californica Keith E. Hoffmaster 1935-2-9 841 Orange Santa Ana Mts., near El Toro. Comment
  RSA0051322  Echidiocarya californica Keith E. Hoffmaster 1935-2-9 841 Orange Santa Ana Mts., near El Toro. 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
  RSA696377  Echinochloa colona Keith E. Hoffmaster 1932-8-26 s.n. Orange Santa Ana. Comment
  CAS-BOT-BC197180  Echinochloa crus-galli Ira L. Wiggins 1965-9-26 20261 Orange At west end of Orangethorpe Estates subdivision, near Atwood Comment
  UC1543182  Echinochloa crus-galli Donald G. Nelson 1935-6-28 341 Orange W. Orange thorpe Ave. sw Fullerton Comment
  SD247549  Echinochloa crus-galli R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49634 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs. Roadside ditch. Comment
  IRVC26815  Echinodorus berteroi R. E. Reifner 2000-8-21 20 728 Orange Irvine Lake [Santiago Reservoir], first cove SE of the dam Santa Ana Mtns. 238 Comment
  IRVC26902  Echinodorus berteroi D. E. Bramlet 1990-10-17 2063 Orange Delhi Channel at the intersection of Irvine Ave. & Mesa Drive, just W of Newport Beach Golf Course. 6 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
  RSA151075  Eclipta prostrata Peter H. Raven 1961-10-15 16859 Orange Dyke along road to Yorba Linda just north of US Hwy 91 114 Comment
  UC1930109  Ehrharta calycina Scott D. White, Michael Honer 2003-6-12 9542 Orange SOUTHWESTERN SANTA ANA MTS FOOTHILLS: Rancho Mission Viejo. Upper end of Trampas Canyon. Comment
  RSA731006  Ehrharta erecta Fred M. Roberts, B. Allen 2007-1-19 6508 Orange Mission Viejo: 23012 Via San Gabriel. Irrigated urban landscaping. 230 Comment
  UC552355  Elatine brachysperma H. H. Tracy 1935-4-10 Orange n Cotsa Mesa Comment
  RSA365351  Eleocharis montevidensis var. montevidensis Anstruther Davidson 1926-05 s.n. Orange St Ana River Comment
  CLARK-A1045-1003  Eleocharis palustris George K. Helmkamp 1978-3-3 Orange Newport Beach wet ditch along Newport Back Bay; Newport Beach 7.5'Q Comment
  POM1361  Eleocharis palustris Phillip A. Munz 1918-5-4 2210 Orange Laguna Beach. Comment
  SD245178  Eleocharis parishii R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49571 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway(74). San Juan Creek. Comment
  RSA723493  Eleusine coracana subsp. africana R. E. Riefner 2006-10-8 6 -474 Orange City of Irvine, San Diego Creek, between Alton Pwky. and 405 Fwy 51 Comment
  RSA743555  Eleusine coracana subsp. africana R. E. Riefner 2004-8-28 4 -407 Orange City of Fountain Valley, Newland Ave. at Edinger St. 14 Comment
  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
  RSA542552  Eleusine indica Fred M. Roberts 1987-8-31 3599 Orange Santa Ana River: adjacent to Santa Ana., UTM 3736150m N 415900m E 27 Comment
  RSA798184  Elymus glaucus R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49597 -a Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  UCR150908  Elymus glaucus subsp. glaucus Valerie Soza, LeRoy Gross 1999-6-10 526 Orange Santa Ana Mountains, Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road 1555 Comment
  SD255053  Elymus glaucus subsp. glaucus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49815 Orange Santa Ana Mountains: Trabuco Canyon Comment
  CAS-BOT-BC412641  Emex spinosa E. L. Paddock 1943-5-26 12740 Orange Frank Anderson grove, Manchester, 1/8 mile south of Midway Drive, Anaheim Comment
  RSA610  Emmenanthe penduliflora J. T. Howell 1927-6-9 72 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  HSC25235  Encelia californica Richard Spjut 1972-2-22 2227 Orange W of the Cleveland National Forest in the Santa Anna Mtns. along Hwy. 74 152 Comment
  RSA301996  Encelia californica J. R. Shevock 1972-2-18 1335 Orange Newport Beach Bay 11 Comment
  RSA719414  Encelia californica Fred M. Roberts, Lee Ann Caranza 2006-10-25 6452 Orange Dana Point Headlands south of Margarite Drive, 0.6km W Marine Institute and 1km SW Cook Sch. 58 Comment
  UCR230243  Encelia californica Dick Newell, Don Millar 2011-3-15 082 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash 219 Comment
  UCR99554  Encelia californica B. G. Pitzer 1996-4-30 2792 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  RSA746042  Encelia californica Archie F. Iskaq 2006-2-4 1 Orange Southern Coastal: San Joaquin Marsh; NW edge of marsh. 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
  RSA797597  Epilobium canum subsp. angustifolium Robert F. Thorne 1977-11-21 49994 Orange Santa Ana Mountains: tributary canyon to San Juan Canyon about 2 miles above San Juan Fire Station Comment
  RSA72094  Epilobium canum subsp. canum F. W. Peirson 1923-9-7 4040 Orange Summit of Santiago Peak. Santa Ana Mountains. 1723 Comment
  UCR174018  Epilobium ciliatum A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33011 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
  POM201878  Epilobium ciliatum subsp. ciliatum L. M. Booth 1932-6-4 1145 Orange Newport Lagoon. 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
  RSA790024  Equisetum hyemale var. affine R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49565 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  RSA798092  Equisetum telmateia var. braunii R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49599 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  RSA703457  Eragrostis R. E. Riefner Jr. 2004-8-27 4 -392 Orange City of Irvine, San Diego Creek at 405 freeway. 50 Comment
  RSA226743  Eragrostis mexicana subsp. virescens I. L. Wiggins 1965-11-7 20358 Orange Vacant lot between State College Blvd. and Troy High School Campus, Fullerton. Comment
  UCD33017  Eragrostis pectinacea Beecher Crampton 1965-10-27 7583 Orange Orange County, UC - South Coast F.S.. Comment
  RSA436022  Eremocarpus setiger Malcolm M. Rice 1927-9-4 1953 Orange San Juan Creek Bed, San Juan. Comment
  JEPS69115  Eriastrum sapphirinum John Thomas Howell 1927-6-9 2471 Orange Santa Ana Canyon Rancho Santa Ana 213 Comment
  UCSB48005  Eriastrum sapphirinum subsp. dasyanthum Roberts, Fred 1980-6-29 Orange Santa Ana Mtns., Viejo Canyon, 0.4 km. N Calif. Rte. 74; 2.2 km. ENE San Juan Guard Station 341 Comment
  RSA0121310  Eriastrum sapphirinum subsp. dasyanthum C. W. Tilforth, Annia Kowalishen 1977-6-15 1340 Orange On Rancho Santa Ana property, north side of Santa Ana Canyon. 183 Comment
  RSA759255  Ericameria cuneata Robt Allen, Reginald Durant 2008-5-16 s.n. Orange Modjeska Peak. W Facing slope within 2 meters of the access road up Modjeska Peak. Approximately midway between the peak's south-facing slope and the sharp bend in extreme N end of the road. 1643 Comment
  IRVC763  Ericameria linearifolia D. Christy 1965-5-12 Orange Corona del Mar, Begonia St. Newport Beach Comment
  CAS-BOT-BC299499  Ericameria palmeri var. pachylepis Carl B. Wolf 1931-10-30 2943 Orange Rancho Santa Ana, Santa Ana Canyon 207 Comment
  OBI5705  Ericameria palmeri var. pachylepis Carl B. Wolf 1931-10-30 2504 Orange Hiils on N side of Santa Ana cyn. (Rancho Santa Ana Botanic Garden-ner marker no 14E 9) 207 Comment
  POM257106  Ericameria palmeri var. pachylepis C. B. Wolf 1931-10-30 2504 Orange Rancho Santa Ana, Santa Ana Canyon. 207 Comment
  RSA450872  Ericameria palmeri var. pachylepis Fred M. Roberts 1983-12-9 1151 Orange Irvine Uc, Irvine Ecological Preserve, 0.8dm SSW Campus center. 70 Comment
  RSA751525  Ericameria palmeri var. pachylepis A. C. Sanders, Fred M. Roberts 2008-8-7 35996 Orange Weir Canyon, along Windy Ridge Rd. at wash crossing, 0.95 mi. SE of Walnut Canyon Reservoir 242 Comment
  UCR239618  Ericameria palmeri var. pachylepis Fred M. Roberts 2012-4-27 7537 Orange Lomas de Santiago, Loma Ridge, west of SR 241, tributary to 'Las Flores' Canyon, 1.9 km southwest of Irvine Lake Park Campground and 1.2 km east-souteast of Orange County Emergency Operations Center, Hill 1311 350 Comment
  SEINET5708382 Image available Ericameria palmeri var. pachylepis C. W. Tilforth 1976-1 1228 Orange Open slopes above Santa Ana Canyon on Rancho Santa Ana property.; Santa Ana Canyon Comment
  UCR195001  Erigeron canadensis A. C. Sanders, Fred M. Roberts 2008-8-7 36008 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  RSA0013964  Erigeron foliosus var. foliosus Fred M. Roberts, David E. Bramlet 2008-5-13 6956 Orange Upper Weir Cyn., central fork, 3.5 km NE Roberst Peak 369 Comment
  RSA648191  Erigeron foliosus var. stenophyllus Karl Price 1988-5-7 30 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. 304 Comment
  UC219277  Eriodictyon crassifolium P. A. Munz and I. M. Johnston 1921-5-18 5316 Orange Santa Ana River Canyon; abundant in bed of side canyon 243 Comment
  POM18124  Eriogonum elongatum P. A. Munz 1923-9-7 7740 Orange Santiago Peak in Santa Ana Mountains. 1707 Comment
  RSA7477  Eriogonum elongatum Carl B. Wolf 1933-8-24 5401 Orange Summit of Santiago Peak, Santa Ana Mountains. 1732 Comment
  UCR261706  Eriogonum elongatum Dick Newell, Don Millar 2014-9-14 385 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, on Limestone Canyon Rd., 100 yards north of Bolero Cyn. Rd./Loma Ridge Rd. 393 Comment
  POM293156  Eriogonum fasciculatum Lyman Benson 1946-5-13 12096 Orange Corona del Mar, Pacfic Ocean drainage area 15 Comment
  RSA0031722  Eriogonum fasciculatum Caralisa Breidenbaugh, Mark Breidenbaugh 1992-5-25 63 Orange 1/2 mile south of Chino Hills State Park Boundary. 228 Comment
  RSA658200  Eriogonum fasciculatum T. A. Daubert 1991-5-19 650 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  RSA787217  Eriogonum fasciculatum J. D. Olmsted 1959-8-26 833 Orange Drainage area to Santiago Reservoir. East of Santiago Reservoir. Mouth of Black Star Canyon. 366 Comment
  CAS-BOT-BC253216  Eriogonum fasciculatum var. fasciculatum John Thomas Howell 1927-7-24 2835 Orange Near mouth of Claymine Canyon, Santa Ana Canyon 152 Comment
  UC536912  Eriogonum fasciculatum var. fasciculatum Lawrence M. Booth 1932-7-27 1326 Orange Ocean Bluff, Corona del Mar Newport Beach, Corona del Mar Comment
  UCR239622  Eriogonum fasciculatum var. fasciculatum Fred M. Roberts 2012-4-24 7498 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
  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
  RSA7476  Eriogonum nudum var. pauciflorum Carl B. Wolf 1933-8-24 5400 Orange Summit of Santiago Peak, Santa Ana Mountains. 1732 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
  UC1618033  Eriogonum thurberi Donald G. Nelson 1935-6-2 365 Orange n. Brea (mouth of Brea Canyon, on Tonner lease); Brea Canyon, Tonner lease 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
  POM49708  Eriophyllum confertiflorum L. R. Abrams 1901-06 1834 Orange Mt Santiago 1747 Comment
  RSA5331  Eriophyllum confertiflorum B. D. Stark 1933-1-3 4483 Orange Rancho Santa Ana near pear orchard. 122 Comment
  RSA695678  Eriophyllum confertiflorum Minor Warne 1934-3-21 s.n Orange Limestone Canyon. Santa Ana Mts. Comment
  RSA734762  Eriophyllum confertiflorum A. C. Sanders, Teresa B. Salvato 2008-5-13 35342 Orange Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence 366 Comment
  SEINET3386759 Image available Eriophyllum confertiflorum F. M. Reed 1925-5-14 4978 Orange Aliso Canyon. 30 Comment
  UC536892  Eriophyllum confertiflorum var. confertiflorum Lawrence M. Booth 1932-5-12 1042 Orange Newport Bay Comment
  HSC8468  Erodium botrys S. M. Clapp 1966-4-9 36 Orange Entrance to Black Star Canyon 152 Comment
  IRVC1395  Erodium botrys Diane Ibbetson 1965-4-3 HS 202 Orange Ortega Hwy. Southern Coastal Comment
  RSA678510  Erodium botrys Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1127 Orange Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  LA210273  Erodium botrys E. R. Johnson; 1935-3-1 6293 Orange 1 mi W of Atwood, S side of RR 91 Comment
  RSA703721  Erodium brachycarpum D. E. Bramlet 2003-3-20 3351 Orange Donna O Neill Reserve. NE corner of the reserve 183m west of Cristianitos Rd. and 1.83 km north of the E-W access road. 127 Comment
  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
  CAS-BOT-BC41525  Erysimum capitatum Helen D. Geis 1902-1-1 528 Orange Santiago Creek. Comment
  IRVC22653  Erysimum capitatum L. Orsak 1973-5-10 Orange Upper Santiago Canyon, top of Joplin Trail, Santa Ana Mountains 1483 Comment
  JEPS51726  Eschscholzia californica Alice King June, 1908 Orange Santa Ana Comment
  UCR230229  Eschscholzia californica Dick Newell, Don Millar 2011-3-15 080 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash 219 Comment
  UCR267212  Eschscholzia californica Fred M. Roberts, Lee Ann Caranza 2009-4-7 7139 Orange South Coastal Region, DANA POINT HEADLANDS: Dana Point CNLM Preserve, 0.8 km WNW Dana Point Marine Institute at Dana Point Harbor 65 Comment
  UCSB39756  Eschscholzia californica Levine, N. 1977-5-1 Orange Intersection of Malverne and Meadowbrook Way on south side of Malverne, Buena Park 30 Comment
  UCR193326  Eucalyptus camaldulensis var. camaldulensis A. C. Sanders, T. B. Salvato 2008-5-13 35370 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
  OBI53671  Eucalyptus tereticornis Dave Goodward 1987-4-16 4 Orange Irvine Ranch, Boy Scout Camp in Peters Cyn E of Tustin, 1 mi NE of the Irvine Blvd/Myford rd intersection. In an old plantation 80 yrs old Comment
  RSA732059  Eucrypta chrysanthemifolia A. C. Sanders, Fred M. Roberts 2008-4-8 34750 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  UCSC000889  Eucrypta chrysanthemifolia Peter Kamb 1948-6-19 1096 Orange damp rocky base of slide into canyon bottom, Chaparral scrub canyon bottom - Snata Ana Mts., Holy Jim Canyon Comment
  CLARK-A1528-2702  Euphorbia misera John C. Roos 1937-9-1 2548 Orange South Laguna Comment
  UCD170387  Euphorbia misera R. E. Riefner Jr. 2012-12-5 12- 587 Orange City of Dana Point, Dana Point Harbor, Dana Harbor Drive near Cove Road. 8 Comment
  UCR247411  Euphorbia nutans Roger E. Reinke 2013-11-3 s.n. Orange Santa Ana, 12782 Bubbling Well Rd. 41 Comment
  RSA734741  Euphorbia peplus L. C. Wheeler 1946-3-6 6173 Orange Newport Bay. Mainland north of east end of Balboa Island. 3 Comment
  RSA184196  Euphorbia peplus I. L. Wiggins 1966-2-5 s.n Orange Fairgrounds, Costa Mesa. Comment
  UCD142717  Euphorbia polycarpa C. L. Hitchcock 1966-3-15 24140 Orange Stearns Lease, 1.5 miles east of Brea. Comment
  RSA0104830  Euphorbia polycarpa var. polycarpa Mike McCartin 1965-4-4 s.n. Orange Silverado Canyon. Comment
  RSA70544  Euphorbia spathulata F. W. Peirson 1922-5-18 3060 Orange Santa Ana River. 122 Comment
  UCR191012  Euphorbia spathulata A. C. Sanders, Fred M. Roberts 2008-4-22 35028 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  RSA696043  Felicia amelloides Anonymous 1933-10-13 s.n. Orange Santa Ana Comment
  UCR194561  Festuca A. C. Sanders 2008-4-29 35133 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
  CLARK-A1528-4649  Festuca californica John C. Roos 1930-5-20 3237 Orange Capistrano Beach Comment
  UCR102013  Festuca myuros var. myuros B. G. Pitzer 1997-3-25 3007 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  UCR191325  Festuca octoflora A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34608 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
  UCR158955  Ficus carica A. C. Sanders, Mark A. Elvin 2005-9-2 31606 Orange Santa Ana Mtns., Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail on the canyon bottom beyond the end of the road and above the last of the cabins 610 Comment
  CAS-BOT-BC474724  Ficus microcarpa R. E. Riefner, Jr. 2014-6-21 14 -186 Orange City of Laguna Beach, N side of North Coast Hwy near intersection with Cliff Dr. 10 Comment
  CAS-BOT-BC474738  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 363 Comment
  CAS-BOT-BC500431  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 N-bound lane 31 Comment
  CAS-BOT-BC502072  Ficus microcarpa R. E. Riefner, Jr. 2015-8-27 15 -360 Orange City of Newport Beach, Corona del Mar, long Marguerite Ave., S of Fourth Ave. 41 Comment
  CAS-BOT-BC502073  Ficus microcarpa R. E. Riefner, Jr. 2015-8-27 15 -366 Orange City of Newport Beach, Corona del Mar, long Marguerite Ave., near Seaview Ave. 30 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
  CAS-BOT-BC414247  Ficus rubiginosa R. E. Riefner, Jr. 2011-8-25 11 -119 Orange City of Laguna Beach, Aliso Creek Park, rocky and bluff between Aliso Beach Park and West St. 7 Comment
  UCR102018  Filago gallica B. G. Pitzer 1997-3-25 3021 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  UCR237931  Foeniculum vulgare Mark A. Elvin 2003-2-2 2257 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  RSA524  Foeniculum vulgare J. T. Howell 1927-7-27 500 Orange Near ranch houses, Rancho Santa Ana 152 Comment
  RSA791474  Foeniculum vulgare Keith E. Hoffmaster 1928-1-2 717 Orange Santa Ana. CP3. Comment
  LA207689  Frangula californica subsp. cuspidata P. C. Everett; 1935-6-18 5451 Orange Santa Ana Mountains, summit of Santiago Peak 1731 Comment
  RSA0039580  Frankenia grandifolia Elbert Benjamine 1929-5-14 239 Orange Sunset Beach. Comment
  POM201882  Frankenia grandifolia var. campestris L. M. Booth 1932-7-27 1324 Orange Corona del Mar, Newport Beach, Bluff Ravine Comment
  IRVC1370  Frankenia salina A. S. Boughey, Pat Pembrook 1965-6-8 1020 Orange San Juaquin Hills; Los Trancos Cyn; fork at road bottom. Southern Coastal Comment
  SD82963  Frankenia salina C. Davidson 1970-7-25 1494 Orange Bolsa Chica; Signal oil field. Comment
  RSA171936  Fraxinus dipetala Robert F. Thorne 1963-7-26 32856 Orange Tin Mine Canyon above Beek s Spring, Trabuco District, Cleveland National Forest. 732 Comment
  POM9233  Fraxinus dipetala P. A. Munz, R. D. Harwood 1920-4-25 3737 Orange Santa Ana Mountains, Silverado Canyon. 549 Comment
  CAS-BOT-BC538093  Fraxinus uhdei R. E. Riefner, Jr. 2014-11-28 14 -408 Orange City of Newport Beach, SW corner Jamboree Rd. at MacArthur Blvd 16 Comment
  RSA725530  Fraxinus uhdei Fred M. Roberts 2007-9-11 6574 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
  RSA734971  Fraxinus uhdei A. C. Sanders, Fred M. Roberts 2008-6-17 35464 Orange Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  IRVC29786  Fraxinus uhdei Mark A. Elvin, Dean Kelch 2006-12-9 5304 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
  RSA649055  Fritillaria biflora D. E. Bramlet 2000-4-12 2978 Orange Tributary to Fremont Canyon. the site is 396m northwest of the Edison Spur road and 1.2km southeast of the Fremont ridge road. The locality is 305m southwest of knoll 1515. 372 Comment
  RSA751318  Fritillaria biflora A. C. Sanders, Fred M. Roberts 2008-5-6 35270 Orange Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 366 Comment
  UCR132979  Fritillaria biflora Adrian Wolf 2000-4-15 459 Orange Santa Ana Mtns., North Ranch Policy Plan Area, North Baker Canyon Road 335 Comment
  UCR132988  Fritillaria biflora Adrian Wolf 2000-4-10 454 Orange Santa Ana Mtns., North Ranch Policy Plan Area, south Baker Canyon Road, 0.28 km south of Baker Road/powerlines intersection 351 Comment
  RSA761937  Funastrum cynanchoides var. hartwegii Richard Newell 2005-8-23 s.n. Orange San Joaquin Hills, Crystal Cove State Park, about one-quarter mile (0.23 mi) above the parking lot s upper gate & trail head to the park. 88 Comment
  UCR281491  Funastrum cynanchoides var. hartwegii Mitch Provance 2017-6-9 617- 99 Orange Coyote Hills, North Fullerton, East side of Gilbert St., 0.5 miles ENE of intersection with Castlewood Dr. 124 Comment
  LA208397  Galium angustifolium Norman C. Cooper; 1944-6-4 Orange San Juan Canyon 304 Comment
  SEINET10500686  Galium angustifolium James S. Miller 1992-5-8 Miller 7450 Orange 2 mi E of the border of Cleveland National on California route 74. 310 Comment
  UCR223428  Galium angustifolium Dick Newell, Don Millar 2011-2-15 060 Orange South Coast, San Joaquin Hills, Laguna Wilderness Park, along Stagecoach Trail 131 Comment
  JEPS7854  Galium angustifolium subsp. angustifolium Alice King 1908-4-18 Orange Santa Ana Mts. Comment
  RSA631403  Galium angustifolium subsp. angustifolium Valerie L. Soza, LeRoy Gross 1999-6-7 490 b Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  RSA632422  Galium angustifolium subsp. angustifolium Valerie L. Soza, LeRoy Gross 1999-6-10 519 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road. 1555 Comment
  UC536926  Galium angustifolium subsp. angustifolium Lawrence M. Booth 1932-7-4 1241 Orange hillside Newport Lagoon Comment
  POM256705  Galium angustifolium subsp. angustifolium W. Pequegnat 1940-6-15 s.n. Orange Santa Ana Mountains: Modjeska Flat. 1372 Comment
  RSA792478  Galium aparine Justin M. Wood 2011-2-28 3269 Orange South Coast: Santa Ana River, marsh just upstream of Pacific Coast Highway. Plants collected throughout the marsh and along the adjacent bike path. 0 Comment
  SBBG7296  Galium aparine H. and M. Dearing 1937-3-12 1861 Orange Santa Ana Cyn Comment
  RSA587868  Galium nuttallii Fred M. Roberts Jr., Carol A. Roberts 1990-5-16 4632 Orange Small canyon along southeast side of Irvine Mesa, 3.5 km N Bolero Lookout. 396 Comment
  RSA542398  Galium parisiense Fred M. Roberts, K. Keane 1988-5-26 4013 Orange Rancho Mission Viejo: tributary to Trampas canyon, along Christianitos rd., 2.4 km ESE Viejo Survey mark. 128 Comment
  JEPS74654  Galium porrigens Lauramay T. Dempster and G. L. Stebbins 1967-3-21 4351 Orange 1 mi nw Cock's Corners (on road to Modjeska's Home, shallow canyon) Comment
  POM47660  Galium porrigens F. W. Peirson 1924-5-31 4665 Orange 5 miles southeast of Laguna Beach Comment
  RSA562824  Galium porrigens Steve D. Boyd, Tim S. Ross 1992-5-20 7457 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon along canyon floor from crossing Lucas Canyon Trail., Upstream 1/4 mile to spur trail leading to old mining habitations in side canyon. 305 Comment
  RSA702689  Galium porrigens Scott D. White, Michael Honer 2004-5-17 10390 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
  RSA5291  Garrya flavescens B. D. Stark 1933-1-5 4505 Orange 2 mi. so. of summit of skyline Drive on road along ridge to Santiago Peak. Santa Ana Mts. 1067 Comment
  CAS-BOT-BC402198  Garrya flavescens subsp. pallida R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49700 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  UC1122732  Garrya veatchii A. Lewis May 1934 428 Orange Los Pinos Peak; Cleveland National Forest, Elsinore Quad. 1066 Comment
  RSA688864  Gastridium phleoides Fred M. Roberts, David E. Bramlet 2003-4-10 5643 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
  SEINET3237951 Image available Gastridium ventricosum A. C. Sanders 2008-4-29 35131 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
  UC284723  Gastridium ventricosum P. A. Munz 1923-9-7 7758 Orange trail from Trabuco Canyon to Santiago Peak (Santa Ana Mts.); , trail from Trabuco Canyon to Santiago Peak 1127 Comment
  UCR182326  Gaura drummondii E. Johnson 1939-8-3 s.n. Orange South Coast, Brea 122 Comment
  CDA5176  Gaura drummondii Johnson 1939-8-1 Orange North Whittier Heights. 0 Comment
  POM255093  Gaura odorata E. Johnson 1940-8-15 s.n. Orange Kokke estate, I.5 miles north of Placentia. Comment
  CDA5237  Gaura sinuata T. C. Fuller 1962-6-7 8873 Orange Veeh ranch, north of El Toro, ca. 11 miles southeast of Tustin. 0 Comment
  UCR242702  Gazania linearis Fred M. Roberts 2012-5-10 7580 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
  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
  RSA696698  Geranium carolinianum Keith E. Hoffmaster 1935-5-5 s.n. Orange San Juan Canyon., Santa Ana Mts. Comment
  SBBG132272  Geranium carolinianum S. D. White, B. Leatherman 1997-5-6 5037 Orange unnamed tributary to Santiago Crk flowing from the SW, directly W of "Pancho Cyn" "Lomas de Santiago" S179 366 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
  OBI82304  Geranium incanum var. multifidum Unknown 2011-7-1 11 -78 Orange City of Laguna Beach, South Crescent Bay, vicinity of Circle Drive and Island Way. 5 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
  RSA791924  Geranium incanum var. multifidum R. E. Riefner Jr. 2007-4-28 7 -189 Orange City of Newport Beach, Newport Bay, North Star Beach, vicinity of Morning Star Ln. 2 Comment
  RSA797024  Geranium incanum var. multifidum R. E. Riefner Jr. 2007-4-28 7 -189 Orange City of Newport Beach, Newport Bay, North Star Beach, vicinity of Morning Star Ln. 2 Comment
  POM6410  Gilia angelensis P. A. Munz, L. T. Street, G. Williams 1919-5-3 2628 Orange Santa Ana River Canyon. 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
  UCR192503  Gilia angelensis A. C. Sanders, Fred M. Roberts 2008-3-25 34550 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR209363  Gilia angelensis Fred M. Roberts, D. E. Bramlet 2008-4-1 6838 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
  LA12917  Glyceria elata Jason Swallen; 1929-7-21 13714 Orange Santa Ana Mountains, Bear Springs 1523 Comment
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Feb 4 2015
  RSA696915  Gnaphalium californicum Minor Warne 1934-4-14 s.n. Orange Laguna Canyon Forks. Comment
  UCR223982  Gnaphalium californicum Dick Newell, Don Millar 2011-3-1 073 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  UCR197679  Gnaphalium canescens subsp. microcephalum A. C. Sanders, Fred M. Roberts 2008-9-18 36068 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  RSA704430  Gnaphalium leucocephalum Fred M. Roberts, David E. Bramlet 2004-7-30 6087 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn. along Cristianitos Ck., 1.1 km SSW Gato Gate and 0.32km W Cristianitos Road. 73 Comment
  UCR162881  Gnaphalium leucocephalum Fred M. Roberts 2004-7-30 6088 Orange Rancho Mission Viejo; Donna O'Neill Land Conservancy, Cristianitos Canyon along Cristianitos Creek, 0.93 km SSW Gato Gate and 0.23 km W Cristianitos Road 76 Comment
  RSA701689  Gnaphalium luteoalbum Fred M. Roberts, David E. Bramlet 2003-6-6 5899 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, west slopes of Cristianitos Canyon, 0.86 km SSW Gato Gate and 0.39 km W of Cristianitos Road. 149 Comment
  POM201510  Gnaphalium microcephalum L. M. Booth 817 Orange Santa Ana Canyon Comment
  UCR158151  Gnaphalium stramineum Adrian Wolf 1998-5-27 340 Orange South Coast, Newport Slough, south of oil fields, between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 2 Comment
  RSA703385  Gnaphalium stramineum R. E. Riefner Jr. 2004-5-6 04 -173 Orange Newport Beach, north side of Pacific Coast Hwy., west of Bayside Drive near Newport Dunes Beach Club. 10 Comment
  RSA698236  Godetia purpurea Kenneth Beard s.n. Orange East of Irvine Park. Comment
  UCR1483  Grindelia camporum B. L. Estes 1960-7-24 s.n. Orange San Clemente, NE corner of Avenida Santa Barbara and Ola Vista. 46 Comment
  IRVC20018  Grindelia camporum var. bracteosa Fred M. Roberts 1981-6-20 276 Orange 0.7km ENE Dana Hills High School, Dana Point 76 Comment
  RSA17586  Grindelia camporum var. bracteosa C. B. Wolf 1936-7-8 8101 Orange Coast Hwy, Western end of Newport Bay. 9 Comment
  UCR228768  Grindelia camporum var. bracteosa Dick Newell, Don Millar 2011-7-19 204 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon Rd. at junction to Dripping Springs 312 Comment
  RSA696832  Grindelia robusta Minor Warne 1934-5-10 s.n. Orange Fairview Bluffs. Comment
  RSA788243  Gutierrezia bracteata R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49629 Orange Santa Ana Mountains: San Juan Canyon, along Ortega Highway (74) across from San Juan Fire Station Comment
  CAS-BOT-BC314526  Gutierrezia californica Helen D. Geis 1902-1-1 s.n. Orange Santiago Creek Comment
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Dec 8 2018
  SD236194  Gutierrezia californica A. C. Sanders, Fred M. Roberts, Amber O Neal 2008-5-9 35288 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 299 Comment
  UCSB48104  Gutierrezia californica Fritzke, S.; Roberts, Fred 1982-4-3 Orange Santa Ana Mtns.: San Juan Canyon, Calif. 74, 0.9km E San Juan Guard Station 269 Comment
  IRVC26430  Haplopappus canus Mark A. Elvin 2004-2-22 3154 Orange UCI Arboretum Southern Coastal 15 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
  LA203734  Hazardia squarrosa var. grindelioides W. Pequegnat; 1937-8-31 sn Orange Santa Ana Mountains, Indian Canyon, (Seen also in branch of Trabuco Canyon about 3000 ft.) 365 Comment
  UC1424954  Hazardia squarrosa var. grindelioides C. W. Tilforth 1972-8-20 624 Orange County Rd. S 19 between Cooks Corner and O'Neill Park Comment
  UCSB52425  Hazardia squarrosa var. grindelioides Roberts, Fred 1982-9-15 Orange Rancho Mission Viejo: 6.4km ENE San Juan Capistrano by road on Rte. 74; 0.9km NNE Viejo Peak 115 Comment
  SEINET11196714 Image available Hedypnois cretica D. Atwood 1993-3-28 17716 Orange Bolsa Chica Ecological Reserve, California Dept. of Fish and Game. Comment
  CDA6459  Hedypnois cretica Margaret Bellue, G. C. Fleischman 1945-5-8 Orange Near Brea, Union Oil Property. 0 Comment
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Aug 18 2010
  UC537124  Helenium puberulum Lawrence M. Booth 1932-7-19 1285 Orange Bolsas Marsh 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
  IRVC22726  Helianthus annuus Fred M. Roberts, G. A. Marsh 1985-5-14 1795 Orange UC Irvine campus along South Circle View Dr., SE of Engineering Biulding, Irvine 42 Comment
  IRVC775  Helianthus annuus I. L. Wiggins 1966-5-18 20662 Orange along Associated Rd. between Yorba Linda Blvd. and Imperial Hwy; roadside fill. Fullerton Comment
  RSA873  Helianthus annuus subsp. lenticularis J. T. Howell 1927-7-27 484 Orange Near ranch, Rancho Santa Ana 152 Comment
  UCR109777  Helianthus annuus subsp. lenticularis G. S. Nuessly 1980-11-27 s.n. Orange Santa Ana Mtns. Foothills, Villa Park near Orange, north side of Hewes St. at Santiago Blvd., Santiago Creek watershed 107 Comment
  UC774835  Helianthus ciliaris E. Paddock 1942-7-21 11291 Orange n side Ocean Ave. 1/4 mi w La Mirada Rd.; La Habra, Toler Ranch Comment
  IRVC14734  Helianthus gracilentus A. S. Boughey 1968-7-9 401 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  RSA725574  Helianthus gracilentus Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6531 Orange dirt road along ridge between Black Star and Fremont Canyons, 4.4km ENE Irvine Lake spillway and 2.4km WSW Hidden Ranch. 662 Comment
  UCR230222  Helianthus gracilentus Dick Newell, Ed Hill 2011-3-29 099 Orange Peninsular Range; Santa Ana Mtns., 200 yards NE of old coal mine, under power lines, off Coal Rd. below intersection with Upper Blind Cyn. Rd. 482 Comment
  UCR195005  Heliotropium curassavicum A. C. Sanders, Fred M. Roberts 2008-8-7 35983 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  CLARK-A1528-920  Heliotropium curassavicum subsp. oculatum Patricia A. Andrews 1975-6-26 5910 Orange Capistrano Bay Beach 9 Comment
  CSUSB739  Heliotropium curassavicum var. oculatum Cesareo Perez 1971-5-15 Orange Huntington State Beach Pacific Coast Highway @ Brookhurst, Huntington Beach, CA. Comment
  POM202725  Heliotropium curassavicum var. oculatum L. M. Booth 1932-6-9 1172 Orange Santa Ana River, 1 mile from ocean. Comment
  RSA572920  Hemizonia australis J. Mallory 1993-8-27 6366 -D-02 Orange E and north of Cliffs on Mesa, S of Los Patos Ave. and green Street, Bolsa Chica Wetlands. Comment
  IRVC14670  Hemizonia fasciculata A. S. Boughey 1968-7-16 424 Orange road to Signal Peak. San Joaquin Hills Comment
  RSA485309  Hemizonia fasciculata Chris Lauterbach 1971-5-9 32 Orange Carbon Canyon road, the intersection of CAlifornia 90 and 142. 76 Comment
  CAS-BOT-BC26068  Hemizonia parryi subsp. australis David D. Keck 1933-9-29 2537 Orange Seal Beach. Comment
  CAS-BOT-BC26069  Hemizonia parryi subsp. australis David D. Keck 1933-9-29 2537 Orange Seal Beach Comment
  LA26011  Hemizonia parryi subsp. australis David D. Keck; 1933-9-29 2537 Orange Seal Beach Comment
  UCR66261  Hemizonia parryi subsp. australis D. E. Bramlet 1990-11-3 2064 Orange W side Upper Newport Back Bay, c. 50 m NW of the Delhi channel. Population c. 100 m SE of end of University Dr. 23 Comment
  UCR94531  Hemizonia parryi subsp. australis Tony Bomkamp 1995-1 s.n. Orange Rancho Mission Viejo, floodplain of Canada Gobernadora west of Casper Regional Park. 140 Comment
  CAS-BOT-BC143752  Heteromeles arbutifolia P. Everett; E. R. Johnson 1937-11-30 9380 Orange Santa Ana Mts., Bold Meadow at head of Claymine Canyon on slopes of Sierra Peak 762 Comment
  CAS-BOT-BC143753  Heteromeles arbutifolia C. B. Wolf 1932-3-6 1840 Orange Trabuco Canyon 1/2 mi. above Trabuco Oaks, west slope of Santa Ana Mts. 457 Comment
  RSA0072389  Heteromeles arbutifolia K. M. Meyer, A. Townesmith, T. Scott 2007-3-10 3 Orange Cleveland National Forest, 0.5 mi. N Main Divide Rd./NF3S04, off Hwy. 74. Elsinore Mtns., ridge top. 917 Comment
  RSA658198  Heteromeles arbutifolia T. A. Daubert 1991-5-26 657 Orange Tucker Wildlife Sanctuary, Modjeska Canyon, fire road. Comment
  RSA743517  Heteromeles arbutifolia Fred M. Roberts 2008-4-9 6884 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  UCR192076  Heteromeles arbutifolia A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35277 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  UCSB47998  Heteromeles arbutifolia Roberts, Fred 1980-7-7 Orange Santa Ana Mtns., San Juan Canyon, Hwy 74, 2.4km ENE San Juan Guard Station; 0.3km W Bench Mark 1100 345 Comment
  IRVC21773  Heterotheca grandiflora Fred M. Roberts 1984-11-27 1438 Orange Novia St. bridge over San Juan Creek, 0.6km S Bench Mark 133, San Juan Capistrano 31 Comment
  RSA0075808  Heterotheca grandiflora Fred M. Roberts 2008-9-28 7110 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5 km W Marine Institute (Dana Point Harbor). 75 Comment
  RSA0075816  Heterotheca grandiflora L. M. Booth 1932-5-25 1112 Orange Balboa Island [Newport Bay]. Comment
  SD39720  Heterotheca grandiflora Edith A. Purer 1932-8-31 4877 Orange Along Highway 101. Comment
  UCR100186  Heterotheca grandiflora Scott D. White 1996-12-20 4639 Orange Santa Ana Mountains, above Modjeska Canyon; proposed water tank site 488 Comment
  CAS-BOT-BC55403  Hirschfeldia incana John Thomas Howell 1927-7-5 2649 Orange Santa Ana River bottom, Santa Ana Canyon. 152 Comment
  RSA653179  Hirschfeldia incana David Barrios 1991-5-8 39 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 365 Comment
  RSA405279  Hoffmannseggia glauca T. W. Minthorn s.n Orange Santa Ana Mnt. Comment
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Nov 15 2013
  RSA708734  Hoita macrostachya Fred M. Roberts, Robert L. Allen, Chris Barnhill 2004-8-21 6119 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
  RSA7325  Hoita macrostachya E. R. Johnson 1933-7-6 5168 Orange 1/2 mile south of Mexican houses, Rancho Santa Ana 122 Comment
  UC537011  Hoita macrostachya Lawrence M. Booth 1932-7-1 1236 Orange Anaheim Marsh Comment
  IRVC19365  Hoita macrostachya R. L. Allen Jul 1977 s.n. Orange Santa Ana Mountains; [San Juan Canyon], Ortega Hwy, road side 111. Peninsular Ranges Comment
  SEINET6654708  Holocarpha virgata subsp. elongata R. E. Riefner Jr. 2003-10-14 03 -421 Orange San Clemente State Beach, mima mound field in SW corner of park.; 0 27 Comment
  RSA5339  Holodiscus discolor B. D. Stark 1933-1-4 4491 Orange Bottom of Claymine Canyon. No. end of Santa Ana Mts. 305 Comment
  RSA699267  Holodiscus discolor R. H. McArthur 1934-4-28 s.n. Orange Ladd Canyon Comment
  CAS-BOT-BC150009  Holodiscus discolor var. discolor C. B. Wolf; E. R. Johnson 1933-11-3 5527 Orange Santa Ana Mts., main divide motorway, slopes of Modjeska Pk. on rd. to Santiago Pk. 1524 Comment
  POM205098  Hordeum brachyantherum subsp. californicum H. M. Hall 1902-05 3285 Orange Santa Ana River 183 Comment
  POM1305  Hordeum depressum P. A. Munz 1918-5-5 2192 Orange Laguna. Comment
  RSA642525  Hordeum intercedens D. E. Bramlet, Sandy Leatherman 1998-5-21 2624 Orange Adjacent to ridgeline road 122m north of the Segunda Deshecha Canada access road (Tleaga Valley Dr.) And 152m west of Wilson Camp Road. 2.68km northeast of Avenida Pico and 1.52 km west of Cristianitos Canyon., San Clemente 7.5 USGS Quadrangle. T8S R7W NW 1/4 of the NE 1/4 of Section 14. UTM 11S 04 114mE X 37 04 708mN. 219 Comment
  UCD85673  Hordeum intercedens D. E. Bramlet; Fred Roberts 2003-5-1 3423 Orange Donna O'Neill Reserve. Along north ridge trail. 305 m W of Cristianitos Rd., and 1 km N of the E-W access road. 128 Comment
  UCR158226  Hordeum intercedens Adrian Wolf 1998-5-4 202 Orange South Coast, Coastal Hills, Aliso/Woods Canyon Regional Park, Aliso Canyon 0.75 km SW of Woods Canyon, 2.25 km NNW of Aliso Water Treatment Plant, north of access road 30 Comment
  UCR207598  Hordeum marinum subsp. gussoneanum O. F. Clarke 2004-5-19 s.n. Orange South Coast, Fairview Park, Costa Mesa 24 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
  RSA526  Hydrocotyle umbellata J. T. Howell 1927-8-13 624 Orange Santa Ana River Bottom 152 Comment
  RSA0106894  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10 -56 Orange City of San Juan Capistrano, La Novia Ave. at Valle Rd. 45 Comment
  RSA16349  Hypericum formosum var. scouleri P. C. Everett 1935-6-18 7184 Orange Santa Ana Mts., Main Divide Motorway to Santiago Pk., 1 mi. from Ortega Highway. 732 Comment
  RSA743384  Hypochaeris glabra Fred M. Roberts 2008-5-27 7008 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5 km W Marine Institute (Dana Point Harbor). 75 Comment
  UCR103159  Hypochaeris glabra Scott D. White 1997-3-26 4823 Orange Univ. of Calif. Irvine Campus, east of main campus at site of proposed student recreation center, east of main campus, between California Avenue and Culver Drive. 40 Comment
  RSA39336  Hypochaeris radicata E. L. Paddock 1943-5-26 12742 Orange Near Santa Fe Railway 1/8 mile east of Northam Station. Buena Park. Comment
  JEPS19116  Isocoma menziesii var. menziesii L. M. Booth 1933-10-18 Orange Newport Comment
  RSA683848  Isocoma menziesii var. menziesii Scott D. White, Brian Leatherman 2003-10-30 9848 Orange Foothills; Oso Parkway crossing over Chiquita Canyon. 198 Comment
  RSA719418  Isocoma menziesii var. menziesii Fred M. Roberts, Lee Ann Caranza 2006-10-25 6458 Orange Dana Point Headlands south of Margarite Drive, 0.6km W Marine Institute and 1km SW Cook Sch. 58 Comment
  CAS-BOT-BC311671  Isocoma menziesii var. sedoides David D. Keck 1932-9-30 1902 Orange 2 mi. W. of Laguna Beach Comment
  OBI47601  Isocoma menziesii var. vernonioides B. Pitzer & L. F. LaPre, L. F. LaPre 1986-10-20 s.n. Orange Summit of Hicks cyn on a private road (continuation of Jeffrey rd) ca. 2.4 mi above the gun club. (Near 117d 43'W, 33d 44'N 274 Comment
  POM147499  Isocoma menziesii var. vernonioides F. M. Reed 1928-4-27 5701 Orange Between Laguna and Newport. 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
  RSA699284  Isocoma menziesii var. vernonioides J. R. Bruff 1930-10-19 s.n. Orange Santa Ana River bed. Comment
  SBBG62842  Isocoma menziesii var. vernonioides M. N. Ackley -Sep-1928 428 Orange Sunset Beach 8 Comment
  UCSB70085  Isolepis cernua Sanders, A. 2008-7-3 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
  RSA696234  Isomeris arborea Minor Warne 1934-5-10 s.n. Orange Fairview bluff near Talbert 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
  PASA1561  Jaumea carnosa Frank W. Peirson 1924-8-29 Orange 3 miles from Balboa on road inland along creek Comment
  RSA594900  Jepsonia parryi Fred M. Roberts Jr. 1991-11-17 4824 Orange Lomas de Santiago: Foothill Ranch, north of El Toro Road, ca. 5.0km SSE Bolero Lookout. 274 Comment
  UC112092  Juglans E. B. Babcock 1907-9-9 Orange on ranch of E.S. Ware 1 mi n Garden Grove Comment
  CAS-BOT-BC101960  Juglans californica Carl B. Wolf 1936-7-8 8103 Orange W. side of Durant St., Santa Ana 30 Comment
  UCR247895  Juglans californica Fred M. Roberts 2013-8-9 7802 Orange Peninsular Ranges, SANTA ANA MTNS.: Lower Silverado Canyon along Silverado Creek on north side of Silverado Canyon Road, 0.8 km ENE Silverado School and 1.5 km up stream Black Star Road crossing. 325 Comment
  RSA791495  Juglans californica Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49613 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station Comment
  SD7922  Juglans californica var. californica George R. Kleeberger 1878-12-1 Orange Santa Ana Valley Comment
  CAS-BOT-BC229009  Juglans hindsii R. E. Riefner, Jr. 2011-9-10 11 -124 Orange Santa Ana Canyon, I-91 northbound, S side of freeway, located within 100 ft of the Riverside County line 127 Comment
  SEINET4691551  Juglans hindsii R. E. Riefner Jr. 2011-1 11 -34 Orange City of Laguna Beach, Laguna Canyon, Laguna Wilderness Park, Stagecoach Trial, ca. 0.15 mi N of El Toro Rd. on W side of Laguna Beach Rd. 86 Comment
  UCR229284  Juglans hindsii R. E. Riefner Jr. 2011-8-25 11- 114 Orange Trabuco Canyon, Trabuco Canyon Road c. 1 mi northwest of O'Neill Regional Park 319 Comment
  UCR247477  Juglans hindsii R. E. Riefner Jr. 2011-4-22 11- 34 Orange South Coast, city of Laguna Beach, Laguna Canyon, Laguna Wilderness Park, Stagecoach Trail, c. 0.15 mi north of El Toro Road on west side of Laguna Canyon Road 86 Comment
  RSA795707  Juncus W. R. Ferren 1991-12-3 EPA- 18 Orange Cook Creek, tributary to Aliso Creek, San Juan Capistrano. Comment
  UCR217670  Juncus arcticus var. balticus Fred M. Roberts, R. E. Riefner Jr. 2008-5-30 7021 Orange South Coast, Lomas de Santiago, Loma Ridge, Hanging Man's Tree Canyon, along Hanging Man's Tree Canyon Road, c. 0.4 km west of Santiago Canyon Road and 1.23 km north of Bolero Lookout 372 Comment
  UCR193797  Juncus balticus A. C. Sanders, Fred M. Roberts 2008-7-3 35706 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  UCR193378  Juncus balticus subsp. ater A. C. Sanders, Mitch Provance 2008-5-20 35395 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
  UC842337  Juncus bufonius Alice Eastwood and John Thomas Howell 1937-4-24 3933 Orange Dana Point Comment
  UCR157700  Juncus bufonius Adrian Wolf 1998-5-27 342 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
  SEINET3880056  Juncus macrophyllus A. C. Sanders, Fred M. Roberts 2008-7-16 35859 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, upper Hangmans Tree Canyon (El Toro 7.5' Q).; 0 395 Comment
  RSA754063  Juncus patens A. C. Sanders, Fred M. Roberts 2008-7-16 35856 Orange Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  UCR132983  Juncus patens Adrian Wolf 2000-7-13 455 Orange Santa Ana Mtns., 0.4 km SE of Black Star Canyon mouth 290 Comment
  RSA683076  Juncus phaeocephalus Scott D. White, Amanda Duchardt 2003-5-1 9151 Orange Canada Gobernadora. 122 Comment
  RSA663202  Juncus rugulosus R. E. Riefner 2000-3-26 20 -151 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  SD212409  Juncus rugulosus Andrew C. Sanders, Fred M. Roberts, et al 2006-7-20 33025 Orange Santa Ana Mountains: San Juan Canyon, from Lower San Juan Picnic Area to circa 1 mile downstream, parallel to Highway 74 and near Riverside County line 366 Comment
  UCR138410  Juncus rugulosus Scott D. White, Brian Leatherman 1997-6-12 5317 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
  UCR193071  Juncus sphaerocarpus A. C. Sanders, Mitch Provance 2008-5-20 35421 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  CAS-BOT-BC227115  Juncus textilis A. C. Sanders; Fred M. Roberts 2008-7-16 35855 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, upper Hangman's Tree Canyon 395 Comment
  POM201725  Juncus textilis L. M. Booth 1932-6-7 1159 Orange Newport Lagoon. Comment
  RSA0014070  Juncus textilis Fred M. Roberts, R. E. Riefner 2010-5-30 7023 Orange Lomas de Santiago: Loma Ridge, Hanging Man s Tree Cyn., along Hanging Man s Tree Cyn. Rd., c.a. 0.4km W Santiago Cyn. Rd., and 1.2 km N Bolero Lookout. 372 Comment
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Sep 21 2020
  RSA749054  Juncus textilis A. C. Sanders, Fred M. Roberts 2008-8-7 35994 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 185 Comment
  RSA754064  Juncus textilis A. C. Sanders, Fred M. Roberts 2008-7-16 35855 Orange Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  RSA788802  Juncus textilis Robert F. Thorne 1977-11-21 49984 -a Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp Comment
  POM201668  Juncus xiphioides L. M. Booth 836 Orange Santa Ana Canyon. Comment
  RSA21064  Juncus xiphioides Ramon Valverde 1938-8-4 9440 Orange Rancho Santa Ana, Santa Ana Canyon. 122 Comment
  CAS-BOT-BC334500  Juniperus rigida var. conferta R. E. Riefner, Jr. 2012-10-21 12 -521 Orange City of Newport Beach, Corona del Mar, ca 0.5 mi S from the intersection of Poppy Ave./ Ocean Blvd. at Little Corona Beach 12 Comment
  CAS-BOT-BC235529  Keckiella antirrhinoides var. antirrhinoides Robinson; Crocker 1916-3-28 999 Orange Santa Ana Mt Comment
  RSA401707A  Keckiella cordifolia M. B. Dunkle 1934-6-18 3996 Orange San Juan Canyon 305 Comment
  LA209316  Keckiella ternata W. E. Pequegnat; August 1937 18 a Orange Santa Ana Mountains, Santiago Peak 1523 Comment
  POM18123  Keckiella ternata subsp. ternata Philip A. Munz 1923-9-7 7743 Orange Santiago Peak. 1524 Comment
  UCSB48011  Kickxia elatine Roberts, Fred 1980-6-30 Orange Irvine; southern shore of Veeh Reservoir at corner of Ridgeroute and Moulton Pkwy 92 Comment
  RSA403466  Koeleria macrantha Albert J. Perkins 1914-6-14 s.n. Orange Santiago Peak. Comment
  RSA629044  Koeleria macrantha Valerie L. Soza, LeRoy Gross 1999-6-10 528 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road. 1554 Comment
  RSA72  Koeleria macrantha J. T. Howell 1928-3-17 879 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA731985  Koeleria macrantha A. C. Sanders, Fred M. Roberts 2008-4-8 34773 Orange Peninsular Range: Lomas de Santiago, SSE os f Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon. 475 Comment
  UCR150914  Koeleria macrantha Valerie Soza, LeRoy Gross 1999-6-10 528 Orange Santa Ana Mountains, Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road 1555 Comment
  RSA725510  Koelreuteria bipinnata Fred M. Roberts 2007-9-11 6563 b 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
  UCR239644  Koelreuteria bipinnata Fred M. Roberts 2012-5-9 7555 Orange Santa Ana Mountains, Lake Forest, along Serrano Creek hiking trail, 1.0 m south-southwest of intersection of Commercentre and Dimension Drives 171 Comment
  UCD20151  Kyllinga brevifolia Bob Loudy 2002-4-18 Orange Town of Laguna Niguel, in lawn of 28572 Rancho Grande St. Comment
  POM202181  Lactuca serriola L. M. Booth 1932-7-19 1283 Orange Bolsas Marsh. Comment
  CHSC26388  Laennecia coulteri James Henrickson 1970-8-22 5297 Orange 2 1/2 miles NNW of Huntington Beach in northern part of Bolsa Chica Salt Marsh. Near oilwell sites. 0 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
  POM202589  Lamarckia aurea L. M. Booth 1932-5-12 1022 Orange Newport Bay Comment
  SD220025  Lamarckia aurea Mark A. Elvin 2004-5-2 3427 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW UC Irvine campus center. 3 Comment
  UC1090437  Lamarckia aurea Milo S. Baker 1958-5-20 13297 Orange Santa Ana Mountains Comment
  RSA663163  Lamium amplexicaule R. E. Riefner Jr. 2000-6-26 20 -584 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Canyon Road. 305 Comment
  SEINET2065733 Image available Lamium amplexicaule J. Harry Lehr 1973-4-21 909 Orange East Santa Anna St. W of State College Blvd, Anaheim 16 Comment
  CDA23089  Lampranthus aurantiacus Mark A. Elvin, D. G. Kelch 2006-12-9 5303 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. 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
  SEINET5585513  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2013-1 13 -39 Orange City of Lake Forest, along El Toro Rd. at Destry Rd. 211 Comment
  RSA0010307  Lasthenia gracilis Fred M. Roberts 2008-3-12 6732 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA736588  Lasthenia gracilis Keith E. Hoffmaster 1931-3-15 367 Orange Santa Ana Mountains Comment
  UC891317  Lasthenia gracilis I. W. Clokey 1932-3-1 5325 Orange Sugar Loaf below Arch Beach Comment
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Nov 2 2011
  POM9824  Lathyrus vestitus subsp. alefeldii P. A. Munz, R. D. Harwood 1920-5-25 3732 Orange Silverado Canyon 549 Comment
  IRVC2207  Lathyrus vestitus subsp. laetiflorus B. Mawdsley 1965-5-2 Orange Cleveland National Forest; Silverado [Canyon]. Santa Ana Mountains Comment
  IRVC15053  Lathyrus vestitus subsp. laetiflorus Gordon A. Marsh, K. G. Marsh 1977-5-28 Orange Selva Road. Laguna Niguel Comment
  UCSB12895  Lathyrus vestitus var. alefeldii 1962-3-9 Orange 12.2 miles east of San Juan Capistrano on State 74 243 Comment
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Apr 10 2016
  SBBG12352  Lathyrus vestitus var. vestitus E. R. Blakley 1957-4-26 2070 Orange State Hwy 140, 5 mi E of Mission San Juan Capistrano 121 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
  UCR141338  Laurus nobilis Robert DeRuff 1990-3-31 391 Orange Southern Coast, Newport Beach, Newport Back Bay, East Bluff 9 Comment
  RSA794333  Lavandula dentata Justin M. Wood 2010-3-31 1451 Orange Santa Ana Canyon: Chino Hills State Park property just west of Green River Golf Course on bluff south of the river. 131 Comment
  RSA38452  Lavatera assurgentiflora subsp. assurgentiflora Carl B. Wolf 1944-11-29 11497 Orange Southeast of Costa Mesa Comment
  RSA799619  Lavatera cretica Justin M. Wood 2011-4-12 3662 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  UCR217461  Lavatera cretica Mark A. Elvin 2003-2-23 2308 Orange South Coast, Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  IRVC29729  Lemna Mark A. Elvin, Barry S. Nerhus 2006-11-4 5243 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA714001  Lemna minuta R. E. Riefner 2005-10-27 5 -303 Orange City of Irvine; along Jeffrey Rd. N of Barranca Rd. near Irvine Valley College. 47 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
  UCR203908  Lepechinia cardiophylla R. E. Riefner Jr. 2008-6-12 08- 152 Orange Santa Ana Mountains, Irvine Ranch Reerve, Fremont Canyon Conservation Eaement, west Fremont Canyon, Windy Ridge south to west fork canyon habitat 515 Comment
  UCD115481  Lepidium densiflorum Louis C. Wheeler 1947-5-4 6476 Orange 4 1/2 miles south of Santa Ana: South Main Street extension, 0.8 miles south of Newport Avenue. Comment
  UCR224162  Lepidium lasiocarpum Fred M. Roberts 2008-3-19 6783 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
  IRVC1102  Lepidium lasiocarpum C. Hooven 1965-4-1 Orange Jamboree Rd. Newport Beach Comment
  JEPS53664  Lepidium lasiocarpum var. lasiocarpum L. M. Booth 1932-5-24 1084 Orange Newport Bay Comment
  UCR14029  Lepidium latifolium J. Riley 1973-9-12 s.n. Orange N end of Huntington Beach Comment
  UCR197577  Lepidium latifolium A. C. Sanders, Fred M. Roberts 2008-9-18 36090 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 0.5-0.8 miles above the highway bridge 300 Comment
  UCR205991  Lepidium latifolium Adrian Wolf 1997-6-6 014 Orange South Coast, Irvine, southeast of corner of MacArthur Blvd and Bison Road, 100 ft from wetland and 50 ft from Bison mudflats 38 Comment
  RSA679088  Lepidium latifolium Fred M. Roberts 2003-7-24 5971 Orange San Juan Capistrono: San Juan Creek, c.a. 0.1 km NE La Novia Bridge. Along creek on cobbly sand of wash in open southern willow scrub and mulefat scrub., 33,30 15 N, 117, 38 44 27 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
  RSA697453  Lepidium nitidum Pomeroy 1929-2-23 79 Orange Near El Toro. 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
  UCR4054  Lepidium virginicum Carole Sims 1965-3-25 s.n. Orange Santa Ana River Canyon, hillside at 24000 Santa Ana Canyon Road (= State Hwy 91), 150 yards north of hwy; also called Gypsum Canyon. West side of gravel company's trucking road. 221 Comment
  RSA754068  Lepidospartum squamatum A. C. Sanders, Fred M. Roberts 2008-7-16 35864 Orange Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 358 Comment
  UCR240072  Lepidospartum squamatum Dick Newell, Judy Booth 2012-9-4 285 Orange Peninsular Range; Santa Ana Mtns., city of Irvine, Fremont Canyon mouth [Irvine Lake Dam Spillway] at Metropolitan Water District Road, 0.3 mi due north of Santiago Dam 205 Comment
  UCR58731  Lepidospartum squamatum Reid Moran 1975-11-21 22741 Orange Santa Ana Mtns., bottom of lower Trabuco Canyon Comment
  RSA712939  Leptochloa fusca subsp. uninervia Fred M. Roberts 2005-10-3 6304 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
  RSA719404  Leptochloa fusca subsp. uninervia Fred M. Roberts, Robert L. Allen 2006-10-8 6431 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  RSA725526  Leptochloa fusca subsp. uninervia Fred M. Roberts 2007-9-11 6576 Orange San Juan Capistrano: San Juan Creek at the confluence with Trabuco Creek. 17 Comment
  IRVC27751  Leptochloa uninervia Mark A. Elvin 2004-5-2 3425 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  JEPS73757  Leptochloa uninervia Lawrence M. Booth 1932-7-18 1262 Orange Newport Bay, Costa Mesa Comment
  UC1123901  Leptodactylon californicum J. B. Spring 1931-4-14 31 Orange Cold Spring Canyon; Corona Quad., Cold Spring Canyon 548 Comment
  RSA696977  Leptosiphon floribundus Keith E. Hoffmaster 1932-4-17 s.n. Orange Santa Ana Mts. [Orange/Riverside Cos] Comment
  RSA73675  Leptosiphon floribundus F. W. Peirson 1925-4-10 5741 Orange In Silverado Canyon. 610 Comment
  SD251267  Leptosiphon floribundus R. F. Thorne 1977-11-21 49985 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp. Comment
  UCR239650  Leptosiphon floribundus subsp. floribundus Fred M. Roberts, Kay Stewart, Pamela Pallete, Bob Greenberg 2012-5-6 7549 Orange Santa Ana Mountains, Hot Springs Canyon, along San Juan Trail, 1.1 km north-northeast of San Juan Fire Station 351 Comment
  UCR237915  Leptosiphon liniflorus Dick Newell, Don Millar, Ron Pennington 2012-7-24 282 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago; Hangmans Tree Rd., 0.23 mi. due west of Santiago Canyon Rd. 363 Comment
  RSA764445  Leptosiphon parviflorus Doris Bowers 1971-4-19 1698 Orange Black Star Canyon Indian Site 762 Comment
  UCR46713  Lessingia glandulifera var. glandulifera B. G. Pitzer, D. C. Hawks 1986-10-21 0355 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, c. 10 mi. east of Santa Ana, along Jeffrey Road in Hicks Canyon, c. 1.5 mi. north of the South Coast Gun Club 274 Comment
  RSA184056  Leymus condensatus I. L. Wiggins 1965-9-26 20255 Orange Carbon Canyon; about 3.5 miles above its mouth., [33 deg 55'N, 117 deg 50'20W] Comment
  RSA651793  Leymus condensatus Jack D. Ingwersen 1962-5-14 s.n. Orange Brea Canyon. Comment
  RSA747630  Leymus condensatus Fred M. Roberts 2008-5-8 6945 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  UC712169  Leymus condensatus Charles B. Fiker 1944-7-7 3137 Orange on Bill Rochester's ranch Trabuco Canyon Comment
  RSA0018625  Leymus condensatus R. H. McArthur 1934-5-19 s.n. Orange Trabuco Canyon Bottom. Comment
  UCR231348  Lilium humboldtii A. C. Sanders, Kent Beaman 2011-9-27 39901 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
  RSA124  Lilium humboldtii subsp. ocellatum J. T. Howell 1927-7-3 262 Orange Claymine Canyon near Sierra Peak. 305 Comment
  UCR12584  Limonium californicum J. S. Davis 1972-5-6 720506- 18 Orange South Coast, Newport Beach, 100 yards from the corner of San Joaquin Hills Road and Back Bay Road. 0 Comment
  UCR106280  Limonium perezii B. G. Pitzer, M. Georgiady 1997-4-5 3091 Orange San Joaquin Hills, Crystal Cove State Park, portion across highway on the beach, bluffs immediately above beach and adjacent terraces for southeast end of park. 24 Comment
  RSA716344  Limonium ramosissimum R. E. Riefner 2006-8-11 6 -386 Orange Upper Newport Bay, E of Back Bay - Bayside Dr. flats along Big Canyon Creek. 5 Comment
  RSA723548  Limonium ramosissimum R. E. Riefner 2006-8-13 6 -391 Orange Upper Newport Bay at Jamboree Rd. 9 Comment
  RSA723550  Limonium ramosissimum R. E. Riefner 2006-8-11 6 -386 Orange Upper Newport Bay, E of Back Bay - Bayside Dr. flats along Big Canyon Creek. 5 Comment
  UCR188997  Limonium ramosissimum Fred M. Roberts 2007-10-29 6623 Orange South Coast, Niguel Hill, Laguna Niguel. Seaview Park, 1.3 km ENE of Aliso Peak 265 Comment
  JEPS58154  Linanthus androsaceus A. J. Perkins 1913-4-27 Orange Trabuco Canyon Comment
  LA206679  Linanthus californicus C. B. Wolf; 1931-3-6 1831 Orange 1.5 mi below Trabuco Oaks along Trabuco Canyon road, W slope Santa Ana Mts 304 Comment
  POM212347  Linanthus californicus B. D. Stark 1931-3-12 1938 Orange Santa Ana Mountains, 3 miles north of Modjeska's home 305 Comment
  RSA221060  Linanthus californicus E. W. Lathrop 1966-3-23 6110 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA468463  Linanthus californicus Albert J. Perkins 1920-5-16 s.n. Orange Trabuco Canyon, Comment
  RSA468464  Linanthus californicus M. B. Dunkle 1933-3-5 3077 Orange San Juan Canyon. Comment
  RSA617  Linanthus californicus J. T. Howell 1928-4-15 918 Orange Near east boundary of the Rancho Santa Ana 229 Comment
  SD41252  Linanthus californicus Darley F. Howe 1946-6-3 Orange Santa Ana Mountains Comment
  CLARK-A1528-3471  Linanthus dianthiflorus John C. Roos 1937-2-23 1306 Orange Laguna Beach Comment
  UCR5212  Linanthus dianthiflorus Barbara T. Gittins, O. F. Clarke 1966-3-19 894 Orange Pacific slope, Irvine Ranch, east of University of California Irvine campus, Newport Beach 91 Comment
  SD254679  Linanthus liniflorus D. E. Bramlet 2008-5-20 4278 Orange Peninsular Range: Santqa Ana Mountains Foothills: Northern Loma Ridge, 305 m west of Hwy 241, 975 m south of Santiago Canyon Road, 61 m north of access road (Black Star Canyon 7.5'Q) 355 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
  UC908693  Linanthus liniflorus J. T. Howell 1927-6-8 2458 Orange Rancho Santa Ana Rancho Santa Canyon 182 Comment
  UCR128169  Linanthus liniflorus Scott D. White, Michael Honer 2003-5-29 9424 Orange Santa Ana Mtn foothills, Rancho Mission Viejo. Hills above Canada Gobernadora on west side of canyon, c. 1 air mile north of Ortega Hwy. 152 Comment
  UCR193066  Linanthus liniflorus A. C. Sanders, T. B. Salvato 2008-5-13 35337 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
  RSA698401  Linanthus parviflorus Dorothy Sammis s.n. Orange Trabuco Canyon. Comment
  RSA752710  Linaria canadensis Fred M. Roberts 2008-3-19 6787 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8km W Marine Institute, Dana Point Harbor. 60 Comment
  RSA700539  Linaria canadensis var. texana Frances Battey s.n. Orange Orange Co. Park. Comment
  IRVC21406  Lobelia dunnii var. serrata A. S. Boughey 1968-7-9 405 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  IRVC299  Lobelia dunnii var. serrata D. Christy 1965-5-5 Orange Corona del Mar, Begonia St. Newport Beach Comment
  UCR228810  Lobelia dunnii var. serrata Dick Newell, Don Millar 2011-7-19 208 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Dripping Springs 392 Comment
  IRVC1116  Lobularia maritima C. Duncan 1965-4-4 Orange Newport Beach Comment
  UCR217465  Lobularia maritima Mark A. Elvin 2003-2-23 2313 Orange South Coast, Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  CAS-BOT-BC342125  Logfia filaginoides Le Roy Abrams 1901-6-13 1795 Orange Trabuco Canon [Canyon] Comment
  RSA0073645  Logfia filaginoides Fred M. Roberts, Lee Ann Caranza, Eliza Maher 2009-4-7 7146 Orange South Coast Region: DANA POINT HEADLANDS: Dana Point CNLM Preserve, 0.8 km WNW Dana Point Marine Institute at Dana Point Harbor. 50 Comment
  SD247596  Logfia filaginoides R. F. Thorne, C. W. Tilforth, E. W Lathrop 1977-4-27 49668 Orange Northern Santa Ana Mountains: Coal Canyon (NW of Sierra Peak). Comment
  UC729650  Lolium multiflorum Carl B. Wolf 1932-6-13 3714 Orange Fullerton; Rose Drive 53 Comment
  CAS-BOT-BC269106  Lolium perenne Ira L. Wiggins 1965-10-24 20290 Orange At corner of Yorba Linda and State College Boulevards, Fullerton Comment
  UCR103152  Lolium perenne Scott D. White 1997-3-26 4810 Orange Univ. of Calif. Irvine Campus, east of main campus at site of proposed student recreation center, east of main campus, between California Avenue and Culver Drive. 40 Comment
  RSA184121  Lolium perenne I. L. Wiggins 1965-10-24 20290 Orange At corner of Yorba Linda and State College Blvds., Fullerton Comment
  UCR16075  Lolium perenne subsp. multiflorum N. J. Moriarty 1973-5-26 730526- 2 Orange South Coast, Huntington Beach, vacant lot at the corner of Beach Blvd. and Memphis Avenue 15 Comment
  CAS-BOT-BC271070  Lolium temulentum E. R. Johnson 1932-5-18 3638 Orange East edge of grain field bordering Rancho, Rancho Santa Ana Botanic Garden 198 Comment
  RSA0011623  Lolium temulentum Rankin s.n. Orange Costa Mesa. Comment
  SEINET8465373 Image available Lomatium dasycarpum Norman Cooper 1944-6-4 1324 Orange Elsinore Mountain 1067 Comment
  RSA530  Lomatium vaginatum J. T. Howell 1927-6-3 22 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA696519  Lonicera subspicata Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts. PR8. Comment
  RSA697263  Lonicera subspicata Keith E. Hoffmaster 1933-5-27 s.n. Orange Santa Ana Mountains. Comment
  CAS-BOT-BC234846  Lonicera subspicata var. denudata Helen D. Geis 1902-1-1 518 Orange Santa Ana Comment
  RSA697961  Lotus americanus Minor Warne 1934-5-19 s.n. Orange Live oak Canyon. Comment
  RSA450859  Lotus argophyllus Gordon Marsh, K. G. Marsh 1977-11-21 s.n. Orange Santa Ana Mts.: N side of Ortega Hwy, near Hwy marker #31, near O.C. Surveyor Bench Mark #3W-24-72. Comment
  RSA697965  Lotus eriophorus Minor Warne 1934-5-6 s.n. Orange Ortega Highway Comment
  UC1280313  Lotus heermannii John M. Tucker 1941-5-30 261 Orange 2-3 mi e w boundary of Cleveland National Forest (Ortega Highway) Comment
  RSA734806  Lotus humistratus A. C. Sanders, Fred M. Roberts 2008-5-6 35254 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
  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
  UCR175057  Lotus salsuginosus Vanessa Lee 2005-4-24 s.n. Orange South Coast, Crystal Cove, Laguna Beach, above Pacific Coast Highway 61 Comment
  UCR192494  Lotus salsuginosus A. C. Sanders, Fred M. Roberts 2008-3-25 34562 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA699490  Lotus salsuginosus H. Dittmer 1932-5-16 s.n. Orange Road to Irvine Dam Comment
  POM250346  Lotus scoparius I. W. Clokey 1932-3-1 5329 Orange Laguna Beach. Comment
  RSA303527  Lotus scoparius Jim Shevock 1970-12-20 568 Orange Newport Back Bay. 11 Comment
  RSA697976  Lotus scoparius Elisabeth Norland 1929-1 s.n. Orange Along highway-Laguna Beach. Comment
  IRVC2239  Lotus scoparius subsp. scoparius J. Pierce 1965-4-10 Orange Laguna Canyon. Laguna Beach Comment
  SEINET10890813  Lotus scoparius var. scoparius Greg Gust, Leith Nye 2005-3-12 Gust 564 Orange Cleveland National Forest, on Hwy 74 ca. 0.5 m W of county boundary with Riverside at a pullout. 401 Comment
  POM50643  Lotus strigosus L. R. Abrams 1901-06 s.n. Orange Laguna Comment
  RSA406320  Lotus strigosus M. B. Dunkle 1933-4-7 3277 Orange Dana Point Comment
  UCR102008  Lotus strigosus B. G. Pitzer 1997-3-25 3030 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, on bluffs immediately above beach, along trail that winds around restoration area and down to beach. 30 Comment
  UCR192996  Lotus strigosus A. C. Sanders, T. B. Salvato 2008-5-13 35341 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
  UCR281557  Lotus strigosus Mitch Provance, Jeremiah George 2017-3-20 317- 114 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
  IRVC21682  Lotus strigosus var. strigosus Fred M. Roberts 1975-5-7 75 60 Orange Dana Point: 0.7km N Dana Hills High School southern coastal 91 Comment
  IRVC17284  Lotus strigosus var. strigosus Karlin G. Marsh 1980-5-5 Orange Rancho Mission Viejo: Planning area; along road way. Southern Coastal 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
  IRVC2225  Lotus strigosus var. strigosus E. P. Cowper 1964-4-10 Orange Corona del Mar Highschool. Newport Beach Comment
  SEINET3560062 Image available Lotus subpinnatus T. Mosquin, P. H. Raven 1962-5-17 4274 Orange Silverado Canyon, Santa Ana Mts. 701 Comment
  RSA717042  Ludwigia peploides Fred M. Roberts, Chris M. Barnhill 2005-9-27 6285 Orange San Juan Capistrano: San Juan Creek wash, east of La Novia Road bridge, 1.4km E Mission San Juan Capistrano. 27 Comment
  RSA799649  Ludwigia peploides Justin M. Wood 2010-9-29 2739 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
  UCR109741  Ludwigia peploides T. W. Fisher, R. E. Orth 1963-4-24 s.n. Orange Peninsular Range; Santa Ana Mtns., San Juan Creek off the Ortega Hwy 500 Comment
  UCR239881  Ludwigia peploides O. F. Clarke 2004-5-29 s.n. Orange Santa Ana River Canyon, Santa Ana River on the west side of Featherly Park 110 Comment
  RSA21063  Ludwigia peploides subsp. peploides Ramon Valverde 1938-8-4 3229 Orange Rancho Santa Ana, Santa Ana Canyon. 122 Comment
  UCR179763  Ludwigia repens R. E. Riefner Jr. 2006-10-8 06- 483 Orange South Coast, Irvine, San Diego Creek near 405 Freeway, between 405 and Laguna Road 51 Comment
  UCR176751  Lupinus Robert Noll 1998-5-14 s.n. Orange Santa Ana Mtns., Santiago Canyon, due south of Irvine Lake on grassy slopes on a NE exposure 305 Comment
  POM9122  Lupinus bicolor subsp. microphyllus Philip A. Munz, R. D. Harwood 1920-4-24 3768 Orange Sierra [Freemont] Canyon, Santa Ana Mountains. 366 Comment
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Sep 17 2011
  IRVC2288  Lupinus bicolor subsp. umbellatus H. Ellis 1965-3-18 HS 0428 Orange Corona Del Mar Beach Southern Coastal Comment
  IRVC24501  Lupinus bicolor subsp. umbellatus Fred M. Roberts, Gordon Marsh 1986-2-28 2623 Orange Mission Viejo: N of Oso Parkway; 4.2km NNE Saddleback Community College. Southern Coastal 200 Comment
  IRVC22484  Lupinus bicolor subsp. umbellatus Fred M. Roberts 1985-4-24 1656 Orange Laguna Beach: Laguna Canyon along Laguna Canyon Rd., 0.8km N jct. El Toro Rd. Southern Coastal 78 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
  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
  UCSB47631  Lupinus excubitus Roberts, Fred 1980-5-3 Orange Main Divide Truck Trail; on north side of road; 0.4 km. NNE Falcon Group Camp (near Blue Jay CG); Santa Ana Mtns. 1067 Comment
  SD251230  Lupinus excubitus R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49802 Orange Santa Ana Mountains: Trabuco Canyon Comment
  CAS-BOT-BC216669  Lupinus excubitus subsp. hallii R. D. Harwood 1920-4-23 5727 Orange Santa Ana Mountain 548 Comment
  CAS-BOT-BC216671  Lupinus excubitus subsp. hallii Charles Piper Smith 1946-4-12 46153 Orange Santa Ana Canyon Comment
  RSA3236  Lupinus excubitus var. hallii Carl B. Wolf 1931-5-20 2056 Orange Along Santa Fe R. R. 1 mile west of Esperanza 107 Comment
  RSA3253  Lupinus excubitus var. hallii B. D. Stark 1931-4-18 1939 Orange mouth of Gypsum Canyon, Santa Ana Mts. Comment
  RSA605683  Lupinus excubitus var. hallii R. S. Woglum 1938-5-8 1619 Orange Peninsular Ranges: Capistrano to Elsinore; Santa Ana Mountains. [Orange / Riverside counties] Comment
  RSA6198  Lupinus excubitus var. hallii Carl B. Wolf 1932-5-27 3699 Orange Santa Fe R R, 1 mile West of Esperanza, Santa Ana Canyon. 107 Comment
  IRVC2326  Lupinus hirsutissimus Kathy Durica 1965-4-25 s.n. Orange Silverado Canyon Santa Ana Mountains Comment
  RSA598965  Lupinus hirsutissimus Scott D. White 1997-3-28 4837 Orange Santa Ana Mountains: above Modjeska Canyon, proposed water tank site. 427 Comment
  SD143895  Lupinus hirsutissimus Scott D. White 1997-3-28 4837 Orange Santa Ana Mountains, above Modjeska Canyon, proposed water tank site; USGS Santiago Peak 7.5' quad. 424 Comment
  CLARK-A1528-2843  Lupinus latifolius C. P. Smith 1937-5-10 Orange San Juan Capistrano Comment
  IRVC15375  Lupinus latifolius Charles W. Sexton 1974-5-28 s.n. Orange Trabuco Canyon below Yeager's Mesa. Santa Ana Mountains Comment
  RSA413751  Lupinus latifolius subsp. parishii N. C. Cooper 1944-6-4 1336 Orange San Juan Canyon. 549 Comment
  CAS-BOT-BC217750  Lupinus longifolius I. M. Johnston 1918-5-4 1897 Orange Back of Laguna Beach 30 Comment
  RSA797239  Lupinus longifolius Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49801 Orange Santa Ana Mountains: Trabuco Canyon Comment
  UCR97724  Lupinus sparsiflorus Scott D. White 1997-2-19 4701 Orange Santa Ana Mtns, above Modjeska Canyon; proposed water tank site 488 Comment
  RSA734641  Lupinus succulentus A. C. Sanders, Fred M. Roberts 2008-3-25 34573 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
  UC537014  Lupinus succulentus L. M. Booth 1932-5-19 1072 Orange Newport Bay Comment
  IRVC20345  Lupinus truncatus Fred M. Roberts 1983-3-10 892 Orange Dana Point Headlands: S of Scenic Drive, 0.3km W Dana Point Harbor; 0.8km S Richard Henry Dana School. Southern Coastal 60 Comment
  RSA414395  Lupinus truncatus M. B. Dunkle 1935-3-3 4346 Orange San Juan Canyon. 457 Comment
  SEINET12154803  Lupinus truncatus J. F. Bright, Wyman, C. 1938-1 8220 Orange Laguna Beach Comment
  CAS-BOT-BC413809  Lycium brevipes R. E. Riefner, Jr. 2008-1-26 08 -10 Orange City of Newport Beach, Corona del Mar, Buck Gully, near Little Corona Beach, slope adjacent to restroom facility, vicinity of Poppy Ave. and Ocean Blvd. 15 Comment
  RSA719470  Lycium brevipes R. E. Riefner Jr. 2006-9-6 06 -419 Orange City of Corona del Mar, vicinity of Poppy Ave. and Ocean Blvd. 4 Comment
  CAS-BOT-BC516184  Lycium californicum R. E. Riefner, Jr. 2012-11-24 12 -558 Orange City of San Clemente, Presidio Ave., ca. 0.2 mi S of Ave. Pico 34 Comment
  RSA3177  Lycium californicum Carl B. Wolf 1932-3-8 2686 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  RSA357139  Lycium californicum Robert F. Thorne 1975-4-6 45576 Orange San Joaquin Marsh: Near Irvine and coast. Comment
  RSA0014849  Lythrum californicum L. M. Booth 1932-7-19 1282 Orange Bolsas Marsh. Comment
  RSA0014852  Lythrum californicum L. M. Booth 1932-6-4 1147 Orange Newport Lagoon. Comment
  UCR188948  Macadamia integrifolia Robert DeRuff 2007-11-24 s.n. Orange Newport Beach, Upper Newport Bay, Back Bay Drive, lower bluff between 23rd Street and Mariners Drive 5 Comment
  UCSB47588  Madia gracilis Roberts, Jr., Fred 1980-5-3 Orange Santa Ana Mtns., San Juan Canyon near mouth of Viejo Cyn.; below Rte. 74, 2.5 km. by road ENE San Juan Guard Station; 0.5 km. WSW Bm 1100 288 Comment
  RSA362292  Madia gracilis Fred M. Roberts 1985-6-7 1846 Orange Santa Ana Mountains: Main Divide Truck trail, 2.2km ESE Los Pinos Peak. 1005 Comment
  RSA94369  Madia gracilis J. T. Howell 1927-6-26 2613 Orange Claymines Canyon, Santa Ana Mts Comment
  CLARK-A1528-5622  Madia sativa John C. Roos 1960-5-30 Orange Santa Ana Mountains Comment
  CAS-BOT-BC206254  Malacothamnus fasciculatus Louis C. Wheeler 1932-7-9 941 Orange Santa Ana River, 5 mi. below Prado 152 Comment
  POM220268  Malacothamnus fasciculatus F. M. Reed 1929-06 6534 Orange Between Newport and Huntington Beach Comment
  RSA647941  Malacothamnus fasciculatus Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-1 17 Orange 1/2 mile south of Chino Hills State Park. 198 Comment
  UCR131893  Malacothamnus fasciculatus J. Mallory, V. McCoy 1995-7-3 6454- 103 Orange Santa Ana Mountains: Blind Canyon, c. 0.5 mi. east of confluence with Santiago Canyon, on a W-facing slope. north of Irvine Lake 300 Comment
  LA41778  Malacothamnus fasciculatus var. fasciculatus Louis C. Wheeler; 1932-7-9 941 Orange Santa Ana River 5 mi. below Prado 152 Comment
  POM8303  Malacothrix glabrata P. A. Munz, R. D. Harwood 3384 Orange Temescal Canyon. 366 Comment
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Jul 6 2014
  CDA1074  Malacothrix saxatilis D. G. Kelch 2006-12-9 6 .54 Orange Along Newport Back Bay Dr. in side canyon. Comment
  UCR191228  Malacothrix saxatilis A. C. Sanders 2008-4-29 35120 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
  RSA549990  Malacothrix saxatilis var. tenuifolia Scott D. White 1992-9-23 857 Orange Vicinity of Olinda, near city of Brea, immediately N of Carbon Cyn Rd & E of Placentia Ave.; ca. 1 mi. (airline) SSE of Tonner Cyn. 183 Comment
  RSA773520  Malacothrix saxatilis var. tenuifolia Fred M. Roberts 1999-5-3 5211 Orange Lomas de Santiago: Loma Ridge, Central Limestone Canyon, west slope, 2.3 km NW Bolero Lookout and 0.5 km NE Bolero Spring 446 Comment
  RSA542520  Malosma laurina Fred M. Roberts, R. Fisher 1986-6-18 3018 Orange Irvine: Lower Shady Canyon, east slope, ca 2.6 km SE French Hill. 91 Comment
  RSA696481  Malosma laurina J. R. Bruff 1934-6-30 586 Orange High school campus Comment
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Sep 13 2013
  UCD116863  Malosma laurina Sue A. Thompson; John E. Rawlins 1988-8-27 5257 Orange Cleveland National Forest: 3.8 mi E of San Juan Hot Springs on CA 74. 370 Comment
  JEPS68647  Malva parviflora Lawrence M. Booth 1932-5-19 1058 Orange Newport Bay Comment
  UCR192466  Malva parviflora A. C. Sanders, Fred M. Roberts 2008-3-25 34534 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  JEPS68666  Malvella leprosa Lawrence M. Booth 1932-7-21 1296 Orange Anaheim Creek Comment
  RSA5943  Malvella leprosa Carl B. Wolf 1932-7-7 3855 Orange Bryant Ranch. On Bryant Avenue. 0.1 mile E of Los Alamitos Blvd. (0.1 mi E of NW corner of SE 1/4 sect 30) 8 Comment
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Apr 10 2016
  CDA25897  Mangifera indica Mark A. Elvin, D. G. Kelch 2006-12-9 5322 Orange Southern Coastal; Newport Backbay; along Bayside Drive ca. 100 miles west of Eastbluff Drive. Comment
  RSA732052  Marah macrocarpa A. C. Sanders, Fred M. Roberts 2008-3-25 34524 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills. 259 Comment
  RSA734010  Marah macrocarpa A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34619 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir. 366 Comment
  SD143935  Marah macrocarpa Scott D. White 1996-12-20 4633 Orange Santa Ana Mtns above Modjeska Canyon. Proposed water tank site. 424 Comment
  RSA0043354  Marrubium vulgare David Barrios 1991-5-8 21 Orange 1500 ft. northwest of Fairmont Ave and Quail Cir., Yorba Linda. 365 Comment
  RSA649326  Marrubium vulgare Diane Terell 1969-3-15 94 Orange On Bradford Avenue between Madison Avenue and Palm Drive in a deserted orange grove 46 Comment
  UCSB39765  Marrubium vulgare Levine, N. 1977-5-1 Orange 0.25 miles west on Rosecrans Blvd. from junction of Rosecrans and Beach Blvd, Buena Park 91 Comment
  UC1543207  Matricaria discoidea Donald G. Nelson 1935-3-24 188 Orange s side Santa Ana Canyon (along highway to Riverside County, ne Orange County) Comment
  CAS-BOT-BC348161  Matricaria discoidea C. L. Hitchcock; C. V. Muhlick 1964-3-17 23065 Orange 8 miles e. of Yorba Linda, Santa Ana Canyon Comment
  CAS-BOT-BC348165  Matricaria discoidea Ira L. Wiggins 1966-3-19 20535 Orange Hills of Irvine Ranch, southeast of U.C. Irvine Comment
  RSA431437  Matthiola incana L. C. Wheeler 1934-1-14 2364 Orange Aliso Creek near Laguna. 76 Comment
  POM6420  Meconella denticulata L. T. Street, G. Williams 1919-5-10 2751 Orange Turnbull Canyon. Near Whittier 305 Comment
  UC1607983  Medicago Donald G. Nelson 1935-3-30 200 Orange hills e. Fullerton (at head of Raymond Ave.) 76 Comment
  CDA27610  Medicago arborea Robert L. Pope 1969-5-22 Orange No other information. 0 Comment
  UCR156570  Medicago minima Robt. L. Allen 1983-4-13 A 638 Orange Santa Ana, 3030 Camille St. at Arapaho Dr. [E side of Santa Ana River] 21 Comment
  IRVC2378  Medicago polymorpha I. L. Wiggins 1966-3-31 20568 Orange Fullerton; associated road 200m S of Imperial Highway on shoulder. Southern Coastal Comment
  OBI17603  Medicago polymorpha Kurt R. Neisess 1975-12-19 s.n. Orange From a back yard lawn in Yorba Linda Comment
  RSA746471  Medicago rigidula R. E. Riefner Jr. 2007-3-18 07 -150 Orange City of San Juan Capistrano, San Juan Creek Rd. at San Juan Creek Circle. USGS quad: San Juan Capistrano 24 Comment
  RSA652177  Medicago sativa R. B. Newcom 1948-4-24 24 Orange 1 miles S.W. of Orange on south side of Tree [illegible] 54 Comment
  SD260949  Medicago truncatula A. C. Sanders, Fred M. Roberts 2008-4-8 34739 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir. Ridge top. 351 Comment
  UCR186422  Melaleuca elliptica Robert DeRuff 2001-4-11 526 Orange Southern Coast, Newport Beach, Newport Back Bay, Shellmaker Island 1 Comment
  SEINET10832869  Melaleuca nesophila Charlene A. Bennett 1976-7-22 Bennett 446 Orange Cultivated and native plants collected around the san clemente beach area. 3 Comment
  UCR241060  Melia azedarach Dick Newell, Don Millar, Judy Booth 2012-12-15 312 Orange Peninsular Range; Santa Ana Mtns., Fremont Canyon at mouth, 1/5 mi. NE of Irvine Dam spillway 206 Comment
  RSA542366  Melica frutescens Fred M. Roberts 1988-3-15 3859 Orange Rancho Mission Viejo; Verdugo Canyon, 1.3 km SSW Lucan Survey Marker 201 Comment
  RSA588777  Melica frutescens Fred M. Roberts 1990-4-26 4585 Orange Silverado Canyon opposite White Canyon, ca. 4.7 km NNE Bolero Lookout 442 Comment
  RSA734398  Melica imperfecta Keith E. Hoffmaster 1935-4-14 605 Orange Live Oak can. Comment
  RSA749487  Melica imperfecta Fred M. Roberts, Linda Farley 2008-3-28 6821 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork along ridge just west of SR241, 3.4 km E Robber's Peak, Irvine Land Conservancy. 437 Comment
  UC1543191  Melica imperfecta Donald G. Nelson 1935-4-6 213 Orange e of San Juan Capistrano (San Juan Canyon, n of summer ranger station near the main highway, s of Cleveland National Forest); Santa Ana Mountains, San Juan Canyon Comment
  UCR138332  Melica imperfecta R. E. Riefner Jr., Adrian Wolf 2000-6-1 20- 460 Orange Santa Ana Mountains, North Ranch Policy Plan Area, north of Irvine Lake [Santiago Reservoir] and west of Black Star Canyon, west of dirt access road, W slope of Fremont Canyon. 473 Comment
  UCR192224  Melica imperfecta A. C. Sanders, Fred M. Roberts 2008-5-6 35265 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  UCR205982  Melica imperfecta Erynn Maynard 2007-8-2 s.n. Orange Peninsular Range; Santa Ana Mtns., Starr Ranch Sanctuary, 100 Bell Canyon Rd., city of Trabuco Canyon 488 Comment
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Sep 5 2010
  UCR209522  Melica imperfecta Fred M. Roberts 2008-4-16 6906 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
  UCSB47583  Melica imperfecta Roberts, Fred 1980-4-3 Orange Highway 74; 0.2 km. SW of Orange-Riverside Co. line; 0.4 km. NNE Lower San Juan Picnic Ground, San Juan Cyn., Santa Ana Mountains 420 Comment
  RSA701691  Melilotus albus Fred M. Roberts, David Bramlet 2003-6-6 5896 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
  UCR100459  Melilotus albus B. G. Pitzer 1996-4-30 2766 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR220025  Melilotus albus Rebecca T. Vo 2010-6-5 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  RSA590960  Melilotus albus Fred M. Roberts, Sandy Desimone 1991-3-28 4764 Orange Lake Forest: Along Regency Road near Brighton Lane, 5.4km SSW Bolero lookout. 244 Comment
  IRVC22205  Melilotus indicus Fred M. Roberts, G. A. Marsh 1985-4-3 1620 Orange Irvine; Irvine Ranch, 1.2km W UCI campus center. Southern Coastal 22 Comment
  IRVC2408  Melilotus indicus Polly Brecht 1965-3-30 s.n. Orange Newport Beach; Corona del Mar, Corona del Mar High School. Southern Coastal Comment
  POM348196  Melilotus indicus M. B. Dunkle 1934-6-18 3985 Orange San Juan Canyon, Southern Coastal. 305 Comment
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Oct 3 2011
  SD239535  Melinis repens R. E. Riefner Jr. 2011-8-16 11 98 Orange Newport Beach, Orange County Parks & Recreation lands, along Newport Coast Drive, between Vista Ridge road and Alteza Road. 281 Comment
  SEINET7073428  Mentzelia affinis A. G. Vestal 1963-4-24 s.n. Orange La Paz Canyon, Rancho Mission Viejo. Coordinate datum: NAD27. 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
  SD236328  Mentzelia micrantha A. C. Sanders, Fred M. Roberts, Amber ONeal 2008-5-9 35313 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 345 Comment
  RSA562737  Mentzelia micrantha Steve Boyd, Tim Ross 1992-5-20 7453 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of wilderness in Lucas Canyon along a new section of trail heading up major side canyon northward to Sitton Peak Road (7S09), 305 Comment
  RSA5963  Mesembryanthemum crystallinum C. B. Wolf 1932-9-13 4035 Orange Bryant Ranch, dike at east side of San Gabriel River Flood Control, at North boundary of ranch 6 Comment
  CHSC26281  Mesembryanthemum nodiflorum Michael Ward 1970-8-22 V- 4 Orange Ca. 4 mi. So. of Seal Beach, NE of Pacific Coast Hwy. and Bolsa Chica St. Pk. at Bolsa Chica Salt Marsh. 0 Comment
  LA202818  Mesembryanthemum nodiflorum LeRoy Abrams; 1903-4-20 3280 Orange near San Juan Comment
  UCR21020  Mesembryanthemum nodiflorum S. Beckstrom-Sternberg 1980-5-25 52580- 01 7 Orange Jamboree Rd entrance to Hwy 73 South. Comment
  RSA286421  Mesembryanthemum nodiflorum Mary H. O Brien 1976-5-1 s.n. Orange Bolsa Chica Bay 100 m e. of Hwy 1 opposite Bolsa Chica State Beach entrance station. Edge of a 6X10 meter salt burn. 0 Comment
  UCSB48069  Micranthes californica Roberts, Fred 1981-4-11 Orange Santa Ana Mtns.: San Juan Cyn, 2.3km ENE San Juan Guard Station; 0.4km W Bench Mark 1100, below Hwy 74 315 Comment
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Oct 28 2018
  RSA263682  Micropus californicus E. W. Lathrop 1966-4-10 6154 Orange Silverado Canyon Comment
  RSA609947  Microseris douglasii subsp. platycarpha D. E. Bramlet 1993-4-4 2311 Orange University of California, Irvina Campus, adjacent to the UCI Ecological Reserve. The site is adjacent the end of Los Trancos Dr. & 500 ft. East of the reserve entrance. 46 Comment
  RSA625807  Microseris douglasii subsp. platycarpha Scott D. White, Noel Davis 1998-4-24 6345 Orange Mission Viejo Area: Aliso Creek watershed, E of El Toro Rd. just N of jct. w/ Valley Vista Wy. Large proposed subdivision called Saddleback Meadow. 305 Comment
  RSA749295  Microseris heterocarpa Fred M. Roberts, Linda Farley 2008-3-28 6817 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
  UCR191019  Microseris lindleyi A. C. Sanders, Fred M. Roberts 2008-4-22 35020 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  UC673538  Mimulus H. L. Mason 1926-4-25 2939 Orange 5 mi s Laguna 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
  UCR228796  Mimulus aurantiacus Dick Newell, Don Millar 2011-5-3 136 Orange Coastal Plains, San Joaquin Hills, Laguna Canyon Wilderness Park, Willow Trail 160 Comment
  RSA0051384  Mimulus aurantiacus subsp. australis Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49602 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  RSA443831  Mimulus aurantiacus var. pubescens Gordon Marsh, K. G. Marsh 1978-5-13 s.n. Orange S end of W portion of Coal Canyon at Main Divide Rd. 707 Comment
  RSA448177  Mimulus aurantiacus var. pubescens Albert J. Perkins 1920-6-12 s.n. Orange Corona del Mar Comment
  UCR97815  Mimulus aurantiacus var. pubescens Scott D. White 1997-3-28 4833 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  LA209161  Mimulus aurantiacus var. pubescens M. H.; O. K., H. H. J. April 1921 sn Orange Fullerton and LIttle Bear Lake 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
  LA209129  Mimulus aurantiacus var. puniceus P. A. Munz; R. D. Harwood 1920-4-24 3758 Orange Comment
  RSA749355  Mimulus brevipes Fred M. Roberts 2008-4-22 6918 Orange Lomas de Santiago: Loma Ridge, Lower Hicks Cyn.,along Haul Rd. near asphalt plant, 2.2 km ENE Rattlesnake Reservoir dam and 2.2 km WNW Bee Peak, Irvine Ranch Conservancy. 188 Comment
  UCR194549  Mimulus brevipes A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35318 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  RSA542496  Mimulus cardinalis Bernard Jaroslow 1989-7-4 B- 26 Orange Santiago Canyon: near upper Santiago Creek. Comment
  RSA285708  Mimulus clevelandii D. C. Michener 1982-5-24 4042 Orange Main divide truck route, 5.9 miles north of El Cariso Comment
  RSA7634  Mimulus clevelandii Carl B. Wolf 1933-11 20009 Orange Trabuco Canyon, so wall, opposite the Trabuco truck trail. Comment
  UC1080592  Mimulus clevelandii E. K. Balls and P. C. Everett 1957-11-25 22845 Orange 4.7 mi e Silverado 1341 Comment
  RSA734757  Mimulus floribundus A. C. Sanders, T. B. Salvato 2008-5-13 35335 Orange Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence. 366 Comment
  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
  SEINET10570241  Mimulus longiflorus Charlene A. Bennett 1976-7-21 Bennett 439 Orange Cultivated plants collected in and around the condominium pacific island estates In laguna hills; some native shrubs. 152 Comment
  RSA21061  Mimulus pilosus Ramon Valverde 1938-8-4 3231 Orange Rancho Santa Ana, Santa Ana Canyon. 122 Comment
  UCR158806  Mimulus pilosus A. C. Sanders, Mark A. Elvin 2005-9-2 31602 Orange Peninsular Range; Santa Ana Mtns., mouth of Lion Canyon near Lower San Juan Picnic Area, San Juan Creek Canyon 427 Comment
  CLARK-A1528-4272  Mimulus puniceus John C. Roos 1965-6-16 Orange Dana Point Comment
  CHSC19537  Mirabilis californica P. Fehr 1974-4-10 1 Orange Beach of trailor park between Costa Mesa and Laguna Beach on w side of Coast hwy. 0 Comment
  HSC16157  Mirabilis laevis C. L. Hitchcock 1966-3-15 24143 Orange Stearns Lease, 1.5 mi. E of Brea. Comment
  CAS-BOT-BC434667  Mirabilis laevis var. crassifolia P. A. Munz; R. D. Harwood 1920-4-24 3739 Orange Santa Ana Mts., Sierra Canyon 365 Comment
  CAS-BOT-BC434672  Mirabilis laevis var. crassifolia C. L. Hitchcock; C. V. Muhlick 1964-3-17 23061 Orange 8 miles e. of Yorba Linda, Santa Ana Canyon Comment
  RSA276  Mirabilis laevis var. crassifolia J. T. Howell 1927-6-21 176 Orange Near ranch houses, Rancho Santa Ana. 152 Comment
  RSA0059066  Monanthochloe littoralis CNPS Accuracy Assessment Team 2014-7-8 9567 .1 Orange Upper Newport Bay Nature Reserve. Comment
  RSA0059067  Monanthochloe littoralis CNPS Accuracy Assessment Team 2014-7-9 9563 .2 Orange Upper Newport Bay Nature Reserve. Comment
  SEINET11692038  Monanthochloe littoralis S. B. Parish, Parish, W. F. 1882-1 1603 Orange Newport Bay Comment
  SEINET892767  Monardella breweri subsp. lanceolata P. C. Everett 1935-1 7238 Orange Santa Ana Mts., Trabuco Canyon, 1 3/4 mi. below summit of truck trail 975 Comment
  RSA0005450  Monardella hypoleuca Steve Boyd 1994-9-14 8352 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon just downstream of Lucus Canyon Trail crossing. 305 Comment
  RSA0005454  Monardella hypoleuca P. A. Munz 1923-9-7 7742 Orange Trail Trabuco Canyon to Santago Peak 915 Comment
  IRVC24949  Monardella hypoleuca subsp. hypoleuca Fred M. Roberts, Gordon A. Marsh 1986-6-6 2939 Orange Black Star Canyon, Black Star Canyon Rd., 6.6km SSW Sierra Peak. Santa Ana Mountains 460 Comment
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Aug 13 2012
  RSA755808  Monardella hypoleuca subsp. intermedia A. C. Sanders, Fred M. Roberts 2008-7-16 35845 Orange Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin. 391 Comment
  IRVC27048  Monardella viminea Mark A. Elvin 2005-2-8 3989 Orange UCI Arboretum Southern Coastal 15 Comment
  SEINET3156844  Monolepis nuttalliana L. Abrams 1903-4-18 3267 Orange Trabuco arroyo near Capistrano Comment
  UCR149449  Moraea iridioides Robert DeRuff 1997-1 503 Orange South Coast, Newport Back Bay, Santa Ana Heights 26 Comment
  RSA598923  Muhlenbergia microsperma Scott D. White 1997-3-28 4853 Orange Above Modjeska Canyon, proposed water tank site 425 Comment
  RSA758892  Muhlenbergia microsperma A. C. Sanders, Fred M. Roberts 2008-4-22 35009 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
  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
  RSA587118  Muilla maritima R. E. Riefner 1995-4-28 95 -110 Orange San Clemente State Beach. Comment
  UCR239648  Myoporum Fred M. Roberts 2012-5-9 7551 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
  RSA696203  Myosotis arvensis Virginia Pritchard, Ruth Greenwald 1938-05 s.n. Orange Santa Ana. Comment
  CAS-BOT-BC219357  Nama stenocarpa Helen D. Geis 1902-1-1 551 Orange Laguna Lake, San Joaquin Hills Comment
  POM6291  Nama stenocarpa P. A. Munz, L. T. Street, G. Williams 1919-5-4 2681 Orange Laguna Canyon. 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
  RSA450846  Nassella lepida Fred M. Roberts 1983-3-10 886 Orange Dana Point headlands, S of Scenic Dr, 0.3km W Dana Point Harbor, 0.8km S Richard Henry Dana School. 45 Comment
  RSA683164  Nassella lepida Scott D. White, Amanda Duchardt 2003-4-10 9016 Orange Ridges & east-facing canyons above Trampas Canyon. 122 Comment
  RSA700190  Nassella lepida Anonymous s.n. Orange Siverado. Comment
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Oct 7 2013
  RSA749291  Nassella lepida Fred M. Roberts 1999-4-2 5169 Orange Lomas de Santiago: Loma Ridge, Dripping Springs Spur Rd., 2.3 km W Silverado Sch. and 5.1 km NW Bolero Lookout. 450 Comment
  UC971747  Nassella lepida L. M. Booth 1932-5-12 1036 Orange Newport Bay Comment
  POM182189  Nassella pulchra Marcus E. Jones 1926-3-13 s.n. Orange Santa Ana Canyon Comment
  RSA747596  Nassella pulchra Fred M. Roberts 2000-5-19 5329 Orange Lomas de Santiago: Loma Ridge, ridge west of Bee Peak above Bee Cyn. landfill, 0.2 km W Bee Peak. 500 Comment
  UCD87441  Nassella pulchra A. A. Beetle 1942-4-19 3103 Orange Rt. 101. 5 miles south of Laguna Beach. Comment
  UCD87644  Nassella pulchra R. M. L. 1942-4-15 7 Orange north slope. Moulton Ranch. Comment
  UCSB48062  Nassella pulchra Fritzke, Sue; Roberts, Fred 1982-4-2 Orange Laguna Niguel; 3.5 km ESE of Aliso Peak; 3.2 km SSE of Alicia Fire Station 100 Comment
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Feb 5 2015
  UCSB48129  Nasturtium officinale 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
  RSA16383  Navarretia atractyloides E. R. Johnson 1935-6-11 7133 Orange Rancho Santa Ana, Santa Ana Canyon grain field west of grapefruit orchard. 137 Comment
  RSA469836  Navarretia hamata Albert J. Perkins 1915-10-8 s.n. Orange Dry ridge on Little Dalton trail to auein Calif. Comment
  RSA468366  Navarretia prostrata Anstruther Davidson 1890-05 s.n. Orange Laguna Beach. Comment
  JEPS57038  Nemacaulis denudata var. denudata Lawrence M. Booth 1932-5-27 1132 Orange Newport Beach Comment
  RSA610225  Nemacaulis denudata var. denudata Fred M. Roberts, J. Vanderwier 1997-4-29 5023 Orange Bolsa Chica Salt Marsh; (US Fish and Wildlife Service cell 60) west of old oil field, 1.1 km. S Chica Survey Mark. 2 Comment
  RSA773546  Nemacladus ramosissimus Fred M. Roberts 1999-4-26 5196 Orange Lomas de Santiago: Lomas Ridge, tributary to Santiago Canyon Wash on ridge between Limestone Canyon and the wash, 1.4 km SE Silverado School, and 2.7 km N Bolero Lookout. 358 Comment
  UC284870  Nemacladus ramosissimus P. A. Munz 1923-9-7 7769 Orange trail from Holy Jim Canyon to Santiago Peak; Santa Ana Mts. 1127 Comment
  UCR177440  Nemophila menziesii Scott D. White, Amanda Duchardt 2003-3-27 8865 Orange Peninsular Ranges/Santa Ana Mtns, Canyon bottom and W-facing slopes above Canada Gobernadora 183 Comment
  RSA588711  Nemophila menziesii var. integrifolia Fred M. Roberts 1990-5-22 4639 Orange Santa Ana Mountains; Upper Hot Springs canyon, just west of Falcon Group Camp, 1.9km ESE Los Pinos Peak. 994 Comment
  CAS-BOT-BC478169  Nephrolepis cordifolia R. E. Jr. Riefner 2014-6-14 14 -171 Orange City of Newport Beach, Cliff Drive Park, along Cliff Drive, near Beacon Street 44 Comment
  CAS-BOT-BC478171  Nephrolepis cordifolia R. E. Jr. Riefner 2014-7-27 14 -261 Orange City of Long Beach, N of E 2nd Street and W of Marine Stadium Park, Alamitos Bay, along docks on Bay Shore Ave. between Monroe Ave. and E. Vista Street 6 Comment
  IRVC150  Nephrolepis cordifolia Dorleene Van Gorden 1965-3-9 HS 539 Orange Costa Mesa; 2212 Meyer Plance Southern Coastal Comment
  RSA0020230  Nicotiana clevelandii Philip A. Munz 1923-4-4 s.n. Orange Laguna Beach. Comment
  JEPS12505  Nicotiana glauca Lawrence M. Booth 1932-7-30 1338 Orange near Newport Beach; Santa Ana River Channel Comment
  LA45882  Nicotiana glauca W. E. Pequegnat; 1937-9-6 sn Orange Santa Ana Mountains, Ortega Rd Comment
  OBI8040  Nicotiana glauca Kurt R. Neisess 1975-12-20 s.n. Orange Fullerton Hills area Comment
  RSA751791  Nicotiana glauca A. C. Sanders, Fred M. Roberts 2008-7-3 35687 Orange 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. 275 Comment
  UCR191471  Nicotiana glauca A. C. Sanders, Fred M. Roberts 2008-4-8 34738 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  UCR223423  Nicotiana glauca Dick Newell, Don Millar 2011-3-1 069 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  POM20633  Nolina cismontana Philip A. Munz 1923-9-6 7728 Orange Madjeska s Ranch Comment
  RSA126  Nolina cismontana J. T. Howell 1927-7-24 467 Orange Claymine Canyon, near Sierra Peak 167 Comment
  RSA751322  Nolina cismontana A. C. Sanders, Fred M. Roberts, Amber O Neal 2008-5-9 35290 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  SD142045  Nolina cismontana James C. Dice, T. Oberbauer 1986-5-3 651 Orange Santa Ana Mts., 0.2 km W of Trabuco Cyn. 365 Comment
  UC1728555  Nolina cismontana James C. Dice with T. Oberbauer 1986-5-3 650 Orange 0.2 km w Trabuco Canyon; Santa Ana Mtns 365 Comment
  RSA698084  Nolina parryi R. H. McArthur 1934-5-19 s.n. Orange Live oak Canyon. Comment
  RSA0051415  Nolina parryi R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49684 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 457 Comment
  RSA750901  Nothoscordum gracile A. C. Sanders 2008-7-3 35714 Orange Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Agustine Staging Area 260 Comment
  CAS-BOT-BC171488  Oenothera californica Carl B. Wolf 1936-6-12 7944 Orange 1 mi. E. of Atwood 91 Comment
  CAS-BOT-BC171489  Oenothera californica Carl B. Wolf 1931-3-25 1935 Orange Along the Santa Fe R.R., 1 mile west of Atwood 91 Comment
  RSA1304  Oenothera elata subsp. hirsutissima J. T. Howell 1928-9-6 1205 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  UCR101492  Oenothera laciniata A. C. Sanders, P. J. MacKay, Tim Thomas, O. F. Clarke 1998-10-17 22268 Orange Coastal flats, Bolsa Chica, near Bolsa Bay, south of Warner Ave., east of the Pacific Coast Highway .3 Comment
  RSA771511  Oenothera micrantha Keith E. Hoffmaster 1927-4-2 465 Orange Santa Ana Mountains [county not specified] Comment
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Jun 10 2012
  RSA783221  Oenothera micrantha J. D. Olmsted 1959-5-1 516 Orange 3/4 miles west of Oat Flat along old road from Main Divide Motorway into Sierra Canyon 777 Comment
  RSA785413  Oenothera spiralis Keith E. Hoffmaster 1927-4-5 464 Orange [City of] Newport. Comment
  RSA6613  Opuntia X occidentalis B. D. Stark 1933-1-21 4519 Orange Dana Point. 15 Comment
  POM317735  Opuntia littoralis David Walkington 1963-5-23 175 Orange West side of N Euclid Ave. north of Sunny Hills West Home, Fullerton. 76 Comment
  IRVC26535  Opuntia molesta Mark A. Elvin 2004-5-22 3453 Orange UCI Arboretum Southern Coastal 15 Comment
  IRVC14191  Opuntia prolifera J. W. Johnson 1976-8-11 Orange Irvine; UCI, 300ft. south of Medical Center; on heavy clay soil in grazing climax of mediterranean grasses. Destroyed by construction. Southern Coastal Comment
  SEINET6752377 Image available Opuntia prolifera Marc A. Baker, Bruce D. Parfitt 1987-4-12 7519 Orange Newport Beach, just W of bridge to Balboa Penninsula. Comment
  POM49505  Orobanche fasciculata L. R. Abrams 1901-6-15 1847 Orange Santiago Peak. Comment
  RSA0059155  Orobanche fasciculata W. Pequegnat 1940-4-13 s.n. Orange Trabuco Peak, Santa Ana Mts. 1311 Comment
  RSA13172  Orthocarpus purpurascens var. pallidus Percy C. Everett 1935-4-27 6693 Orange 1 mi. west of Atwood, Jack Johnson property. 152 Comment
  CAS-BOT-BC355767  Osmadenia tenella D. E. Bramlet 2008-4-15 4178 Orange Foothills of the Santa Ana Mtns.: Hicks Cyn., 301m E Haul Rd, & 1.4km N of the Bee Cyn Access Rd. 206 Comment
  CAS-BOT-BC355773  Osmadenia tenella Munz; Street; Williams 1919-5-3 2631 Orange Santa Ana River Canon [Canyon] Comment
  CAS-BOT-BC355772  Osmadenia tenella F. W. Peirson 1926-4-25 6643 Orange Upper part of Laguna Canyon Comment
  HSC46607  Osmorhiza brachypoda Christopher Davidson 1977-5-18 5618 Orange Santa Ana Mts. Cleveland Nat. Forest. Bear Springs 1220 Comment
  RSA0022432  Osmorhiza brachypoda R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49790 Orange Santa Ana Mountains: Trabuco Canyon Comment
  SBBG52718  Osmorhiza brachypoda C. Davidson 1977-5-18 5609 Orange Santiago Pk (on Orange-Riverside Co line); Santa Ana Mtns 1706 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
  POM212355  Oxalis californica Carl B. Wolf 1931-3-6 1858 Orange Trabuco Canyon, 1.5 mile below Trabuco Camp Grounds 549 Comment
  RSA799952  Oxalis pes-caprae D. M. Ray 2011-1-19 1 Orange South Coast: Santa Ana River: along right of way road just west of Least Tern Island. 0 Comment
  RSA761790  Oxytheca trilobata Robt. Allen 2003-6-22 12280 Orange Along North Main Divide Road, 6.3 road miles north of Falcon Group Campground, circa 2.43 air miles northwest of Los pinos Saddle. 1334 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
  CAS-BOT-BC121213  Paeonia californica C. B. Wolf 1936-6-17 7949 Orange Santa Ana Mtns, along Ortega Hwy, 6/10 mi. below San Juan Hot Springs. 182 Comment
  RSA700033  Paeonia californica R. H. McArthur 1934-2-17 s.n. Orange Gypsum Canyon. Comment
  UC484239  Paeonia californica C. B. Wolf 1931-3-6 1842 Orange 1/2 mi above, w slope of mts. Trabuco Oaks; Santa Ana Mts., Trabuco Canyon 457 Comment
  UCR142521  Paeonia californica D. E. Bramlet 2000-4-7 2945 Orange Peninsular Ranges: Santa Ana Mts. region, 30m south of the SCE maintenace road and 1 km east of Weir Canyon, 1.5km west of Blind Canyon 287 Comment
  OBI82300  Pallenis maritima Unknown 2011-6-25 11 -74 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 2 Comment
  UC1618048  Panicum acuminatum Donald G. Nelson 1935-4-6 254 Orange e. San Juan Capistrano (200-300 ft. below main hwy., ca. 4 mi. from summit, San Juan Canyon); San Juan Canyon Comment
  POM366043  Panicum capillare Anonymous 1914-8-21 30 Orange Found growing at road side near Smeltzer Comment
  RSA731540  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2005-9-20 5 -675 Orange City of Huntington Beach, Huntington Central Park at Goldenwest St. 1 Comment
  SEINET11261327  Panicum miliaceum A. C. Sanders, Fred M. Roberts 2008-7-16 35865 Orange Peninsular Range, Santa Ana Mountains, Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon (El Toro 7.5' Q).; 0 358 Comment
  CDA2142  Panicum virgatum R. E. Riefner Jr. 2006-9-19 06 -439 Orange City of Anaheim. North side of Santa Ana River channel, Santa Ana Canyon, West (downstream) ca. 1.25 miles from Green River Golf Course. Comment
  SEINET6655641  Panicum virgatum R. E. Riefner Jr. 2006-10-8 06 -482 Orange City of Irvine, San Diego Creek near 405-Freeway.; 0 49 Comment
  CAS-BOT-BC413391  Parietaria hespera var. hespera Carl B. Wolf 1932-7-2 3826 Orange Carbon Canyon, 1/8 mi. below La Vida Springs 213 Comment
  RSA717518  Parietaria judaica R. E. Riefner 2006-5-21 6 -199 Orange City of Huntington Beach, Beach Blvd. at MacDonald St. 6 Comment
  RSA702938  Paspalum dilatatum Scott D. White 2004-7-7 10604 Orange Laguna Niguel. 61 Comment
  UCSB68449  Paspalum dilatatum Anderson, J. 1966-5-16 Orange Bayview Ave. and Zenith Ave. Comment
  RSA648017  Paspalum dilatatum J. C. Roos 1936-10-13 1533 Orange Costa Mesa near Santa Ana. Comment
  CAS-BOT-BC259734  Paspalum distichum Le Roy Abrams 1901-6-12 1762 Orange Near Westminster Comment
  CAS-BOT-BC412827  Paspalum distichum R. F. Thorne; E. W. Lathrop; W. Wisura 1977-7-8 49568 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  UC2061654  Paspalum distichum R. E. Riefner Jr. 2005-7-9 05 -544 Orange City of Mission Viejo, Oso creek, ca. 0.5 mi N of Paseo De Colinas on Camino Capistrano. Comment
  RSA91901  Paspalum distichum F. W. Peirson 1924-5-31 4648 Orange Laguna Canyon, near Laguna Beach 106 Comment
  RSA766072  Paspalum pubiflorum R. E. Riefner Jr. 2009-10-10 09 -222 Orange City of Yorba Linda, Santa Ana Canyon, N bank of Santa Ana River, E of Weir Canyon Rd., vicinity of La Palma Ave. and Mercado del Rio. 107 Comment
  RSA724060  Paspalum urvillei R. E. Riefner 2005-11-4 5 -742 Orange City of Lake Forest, Alton Pkwy. at Bertea Rd. 123 Comment
  OBI74913  Paspalum vaginatum R. E. Riefner, Jr. and K. Campbell, K. Campbell 2008-8-31 08 -267 Orange City of Irvine, tidal portion of San Diego crk, immediately E of Hwy 73 overpass 1 Comment
  RSA733138  Paspalum vaginatum R. E. Riefner 2007-10-17 7 -439 Orange City of Dana Point, Dana Point Harbor, Dana Point Harbor Dr. near Puerto Pl. 10 Comment
  RSA733143  Paspalum vaginatum R. E. Riefner 2007-10-26 7 -461 Orange City of Newport Beach, North Star Beach, north shore of Newport Bay near North Star Ln. 9 Comment
  UCR204282  Paspalum vaginatum R. E. Riefner Jr. 2008-1-13 08- 04 Orange South Coast, city of Laguna Beach, Aliso Creek at Pacific Coast Hwy 9 Comment
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Jul 30 2010
  UCR204907  Paspalum vaginatum R. E. Riefner Jr. 2007-7-23 07- 314 Orange South Coast, city of Newport Beach, east of Jamboree Road at Bayview Way, San Diego Creek confluence with Newport Bay 6 Comment
  UCR237832  Pectocarya linearis Mark A. Elvin 2003-2-2 2262 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  RSA0054893  Pectocarya linearis Keith E. Hoffmaster 1932-2-28 62 Orange Santa Ana Mts. Comment
  IRVC16237  Pectocarya linearis subsp. ferocula Karlin G. Marsh 1978-3-24 Orange UCI Ecological Preserve, Irvine Comment
  POM50877  Pectocarya penicillata Helen D. Geis 1902-3-27 s.n. Orange Santiago Canyon. Comment
  CAS-BOT-BC402203  Pedicularis densiflora R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49711 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  CDA32097  Pelargonium Mark A. Elvin 2005-5-14 4313 Orange Southern Coastal; UCI Arboretum Comment
  RSA710818  Pelargonium A. C. Sanders, Mark A. Elvin 2003-10-12 27314 Orange Southern Coastal Slope: Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blve. and Campus Dr. 15 Comment
  UCD103490  Pelargonium A. C. Sanders 2003-10-12 27314 Orange Southern Coastal Slope: Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  CDA25915  Pelargonium grossularioides Mark A. Elvin 2005-5-14 4314 Orange Southern Coastal; UCI Arboretum Comment
  RSA698462  Pellaea andromedifolia R. H. McArthur 1934-4-28 s.n. Orange Ladd Canyon Comment
  RSA752318  Pellaea andromedifolia Fred M. Roberts 2008-5-20 7131 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Cyn., 0.8 km NW Bolero Spr. and 3.1 km WNW Bolero Lookout. Irvine Ranch Conservancy. 467 Comment
  SBBG54517  Pellaea andromedifolia J. T. Howell 1927-6-17 2551 Orange Santa Ana Cyn 152 Comment
  IRVC3143  Pellaea andromedifolia var. andromedifolia A. S. Boughey 135 Orange [San Juan Canyon], Ortega Hwy, 1mi E San Juan Guard Sta. Santa Ana Mountains Comment
  UCSB52421  Pellaea mucronata Roberts, Fred; Meyers, J. 1982-11-7 Orange Santa Ana Mtns.; Lion Canyon, Chiquito Basin Trail, 3.6 km. S Blue Jay Campground; 2.4 km. NNE lower San Juan Campground 800 Comment
  UCR150918  Pellaea mucronata subsp. mucronata Valerie Soza, LeRoy Gross 1999-6-7 477 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 Comment
  RSA758899  Pennisetum clandestinum A. C. Sanders, T. B. Salvato 2008-5-13 35350 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
  IRVC29881  Pennisetum clandestinum Mark A. Elvin, D. Kelch 2006-12-9 5313 Orange Irvine; San Diego Creek, edge of San Joaquin Marsh, beside University Dr., between Campus Dr. and Hwy 73. Southern Coastal 3 Comment
  UCR170142  Pennisetum setaceum Jeffrey Ross, R. Zaka, P. Ross 1998-5-2 33 Orange Irvine, San Joaquin Wildlife Reserve, San Diego Creek; highly disturbed wash, sandy with high seasonal variation in water level, c. 5 mi from Pacific Ocean 6 Comment
  RSA723968  Pennisetum villosum R. E. Riefner 2005-9-20 05 -669 Orange City of San Clemente, along El Camino Read ca. 0.15 mi S of intersection with Los Molinos Rd. 35 Comment
  UCR181158  Pennisetum villosum R. E. Riefner Jr. 2003-11-30 03- 486 Orange South Coast, Santa Ana, 55 Freeway near Brookhollow St. 32 Comment
  RSA220992  Penstemon heterophyllus var. australis E. W. Lathrop 1966-4-18 6186 Orange 4 mi NE of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. 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
  UCSB52393  Penstemon spectabilis Roberts, Fred 1982-7-20 Orange Santa Ana Mtns.: 1.8 km by road NE Falcon Group Camp; 2.9 km E Los Pinos Peak 1082 Comment
  NY661157  Penstemon spectabilis var. spectabilis C. Davidson 1977-5-18 5604 Orange Santa Ana Mountains, Cleveland National Forest. Pleasants Peak (on Orange-Riverside Co. line) 1219.2 Comment
  LA203846  Pentachaeta aurea LeRoy Abrams; 1903-4-17 3259 Orange near El Toro Comment
  RSA13057  Pentachaeta aurea Percy C. Everett 1935-4-22 6463 Orange 1/4 mile W of Horseshoe Bend, Santa Ana Canyon 122 Comment
  RSA594885  Pentachaeta aurea Fred M. Roberts, Stadlander, Vizgirdas 1992-4-24 4840 Orange El Toro Marine Base: Mouth of Borrego Wash, 2.9 km SE Lambert Reservoir dam. 189 Comment
  UC407314  Pentachaeta aurea LeRoy Abrams 1903-4-17 3259 Orange near El Toro Comment
  RSA759154  Pentachaeta aurea subsp. allenii Robt Allen 2008-3-30 s.n. Orange San Joaquin Hills, Laguna Coast Wilderness Park, along Stagecoach South Trail, about 0.25 air mile S of trailhead near the Nix Nature Center. 163 Comment
  RSA0060233  Pentagramma triangularis Fred M. Roberts, Laura Cohen 2000-3-24 5272 Orange Rancho Mission Viejo Land Conservancy: Tributary to Christanitos Cyn., Flagpole Meadow, upper shady Canyon Trail, about 1.6 NW Sycamore Gate. 170 Comment
  RSA687393  Pentagramma triangularis subsp. triangularis May N. Ackley 1925-05 83 Orange Silverado Canyon Comment
  LA204537  Peritoma arborea A. H. Lange; 1951-4-26 sn Orange Balboa Comment
  SEINET1906996  Persea borbonia R. W. Scora 1997-1 5145 Orange Scora's Persea Species Collection, Field 43, South Coast Resertch and Extension Center (Field Station), Irvine. 21 Comment
  RSA710822  Persea cinerascens R. W. Scora 1997-5-13 5142 Orange Zentmyer Avocado Collection, Field 3, South Coast Field Station, Irvine. 21 Comment
  RSA690  Petunia parviflora J. T. Howell 1927-6-30 247 Orange Bryant Ranch, near Long Beach. 15 Comment
  UC537279  Petunia parviflora L. M. Booth 1932-12-16 1378 Orange near coast Santa Ana River Comment
  POM201830  Petunia parviflora L. M. Booth 1932-12-16 1378 Orange Santa Ana River, near coast of Orange. Comment
  UCR192455  Phacelia cicutaria var. hispida A. C. Sanders, Fred M. Roberts 2008-3-25 34575 Orange Peninsular Range; Santa Ana Mtns., saddle on ridge near head of Weir Canyon, 5.3 miles ENE of Villa Park, 3.1 mi. N of (Santiago Reservoir) Irvine Lake 405 Comment
  SBBG6171  Phacelia cicutaria var. hispida J. M. Tucker 1941-5-30 257 Orange Ortega Hwy (St Hwy 74), 2 to 3 mi E of W boundary of Cleveland Nat Forest Comment
  SD152828  Phacelia cicutaria var. hispida Steve Boyd, Tim Ross 1992-5-20 7456 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the silderness in Luca Canyon along a new section of trail heading up major side canyon northward to Sitton Peak Road (7S09). 305 Comment
  RSA539411  Phacelia curvipes Fred M. Roberts, Carol A. Roberts 1988-6-9 4070 Orange Santa Ana Mountains: Main Divide Truck Trail, Modjeska Peak, west slope, 0.5 km NNW summit. 1417 Comment
  RSA650825  Phacelia distans Daniel Truong 1991-5-5 11 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of ''closed area' . Comment
  RSA699578  Phacelia distans Dorothy Sammis s.n. Orange Silverado Canyon Comment
  UC718113  Phacelia distans C. B. Wolf 1935-4-7 6320 Orange San Juan Hot Springs Santa Ana Mts., San Juan Hot Springs Canyon (at mouth of canyon) 213 Comment
  UCSB52917  Phacelia distans Roberts, Jr., Fred 1985-3-10 Orange Dana Point Headlands: south of Scenic Dr., 0.3 km. W Dana Point Harbor; 0.8 km. S Richard Henry Dana School 60 Comment
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Feb 22 2019
  UCR191321  Phacelia hubbyi A. C. Sanders, Fred M. Roberts 2008-4-8 34745 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  JEPS1176  Phacelia minor Mary Alice King March 1907 Orange Anaheim plains Comment
  RSA648195  Phacelia minor Karl Price 1988-5-7 38 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
  RSA697788  Phacelia minor Snow s.n. Orange Black Star Canyon. Comment
  UCR192504  Phacelia parryi A. C. Sanders, Fred M. Roberts 2008-3-25 34551 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR220302  Phacelia parryi Dick Newell, Don Millar, Jutta Burger 2010-3-16 010 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Agua Chinon Wash 250 m north of Hwy 241 toll road 201 Comment
  UCR239629  Phacelia parryi Fred M. Roberts 2012-4-24 7515 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  RSA627527  Phacelia parryi Sandy Leatherman, Fred M. Roberts, B. Leatherman, Trish Smith 1998-5-23 22 Orange Black Star Canyon: Spur Road off of Black Star Canyon Road. 335 Comment
  RSA759251  Phacelia parryi Robt. Allen, Lori Whalen 2008-7-5 s.n. Orange Dry foothills along a SW-facing ridge, slong Santiago Truck Trail, 0.5 air miles E of USPF Forest Gate at Modjeska Grade Road. Comment
  UCR124020  Phacelia ramosissima var. ramosissima George K. Helmkamp, E. A. Helmkamp 2001-6-20 6811 Orange Peninsular Range; Santa Ana Mtns., Ortega Highway, 1.6 mi north of Lucas Cyn Rd., near Cleveland National Forest 213 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
  CAS-BOT-BC250616  Phalaris minor Carl B. Wolf 1932-5-18 3636 Orange Rancho Santa Ana Botanic Garden, near East porch of administration bldg. 198 Comment
  IRVC1778  Phalaris minor Robin Hobson 1965-4-10 s.n. Orange Newport Beach; [Newport] Back Bay Southern Coastal Comment
  UCR102004  Phalaris minor B. G. Pitzer 1997-3-25 3038 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, on bluffs immediately above beach, along trail that winds around restoration area and down to beach. 30 Comment
  UCR193585  Phalaris minor A. C. Sanders, T. B. Salvato 2008-5-13 35367 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
  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
  RSA770727  Phoenix dactylifera Robert DeRuff 2008-07 570 Orange Upper Newport Bay, between Mariner s Drive and North Star Beach 6 Comment
  RSA699272  Pholistoma auritum Minor Warne 1934-4-7 s.n. Orange Ladd Canyon Comment
  LA205660  Pholistoma auritum var. auritum A. M. Johnson; 1934-4-15 4418 Orange Laguna Beach Comment
  UCR261684  Pholistoma auritum var. auritum Dick Newell, Don Millar 2015-3-24 392 Orange South Coast, San Joaquin Hills, on Willow Canyon Trail 0.2 mi. west of Laguna Coast Wilderness Park entrance off Laguna Canyon Rd. 88 Comment
  CAS-BOT-BC413831  Phoradendron leucarpum subsp. macrophyllum Andrew Townesmith; Karen M. Meyer; Tracy Scott 2007-3-11 675 Orange Cleveland National Forest. Off Long Canyon Road, NW of intersection with Route 74 752 Comment
  UCR234156  Phoradendron macrophyllum Dick Newell, Peter Wetzel 2012-1-3 223 Orange Peninsular Range; Santa Ana Mtns. Region, Peralta Hills, Villa Park, west of Chapman Ave. & Newport Blvd. 198 Comment
  UCR90501  Phyllospadix torreyi F. M. Reed 1933-6-11 7858 Orange South Coast, Reef at San Juan Capistrano Comment
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May 1 2011
  RSA0127602  Physalis crassifolia Fred M. Roberts 2016-3-25 8032 Orange San Joaquin Hills: Bommer Canyon, west slope near south end fo Nature Loop Trail, 0.1 km NW Cattle Camp and 1.6 km NE summit of Signal Peak. 146 Comment
  POM50618  Physalis greenei L. R. Abrams 1901-6-12 s.n. Orange Laguna. Comment
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Apr 23 2011
  RSA733864  Physalis philadelphica Keith E. Hoffmaster 1928-5-23 536 Orange San Onofre. Comment
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Nov 19 2013
  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
  CAS-BOT-BC76994  Pilularia americana H. H. Tracy 1935-4-10 s.n. Orange North of Costa Mesa Comment
  MACF019850  Pinus attenuata Doug Stavert 1975-4-27 Orange Pleasants Peak, Santa Ana Mtns. Comment
  RSA23668  Pinus attenuata C. B. Wolf 1939-1-20 9484 Orange Santa Ana Mts., N.W. of Pleasant's Pk. (Sugarloaf) along Main Divide Motorway; 1 3/10 mi. So. of summit, Skyline Dr. Ft. 1159 Comment
  SD13290  Pinus attenuata Carl B. Wolf 1934-12-21 Orange Santa Ana Mountains, saddle northwest of Sugarloaf Peak (Pleasants Peak), south slope of main ridge, 1.3 mile south of summit of Skyline Drive 1160 Comment
  SEINET10879506  Pinus attenuata Andrew Townesmith, Karen M. Meyer; Tracy Scott 2007-3-11 Townesmith 677 Orange Cleveland National Forest. Off Long Canyon Road (Forest Service road 6S05). Near entrance to Falcon Group Camp. 1000 Comment
  RSA0027777  Pinus attenuata Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49694 Orange Northern Santa Ana Mountains: Sierra Peak Comment
  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
  RSA796521  Pinus coulteri Robert F. Thorne, E. W. Lathrop 1977-5-18 49731 Orange Santa Ana Mountains: at head of Trabuco Canyon Trail Comment
  UCR234149  Pinus halepensis Dick Newell, Judy Booth 2012-3-30 241 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, Cleveland National Forest 258 Comment
  RSA651141  Pinus radiata Jack D. Ingwersen 1962-6-2 s.n. Orange Anaheim Comment
  JEPS103669  Piperia elongata Robert L. Allen with Christopher M. Barnhill 2004-1-10 12269 Orange Santa Ana Mountains, Trabuco Trail, ca 0.7 trail miles (1127m) NW of Los Pinos Saddle, middle of top half of first switchback. 1178 Comment
  RSA725540  Piptatherum miliaceum Fred M. Roberts, Robert L. Allen 2007-9-28 6606 Orange Santa Ana Mtns.: Silverado Cyn., along Silverado Cyn. Rd. at eastern edge of town of Silverado. 347 Comment
  RSA735973  Piptatherum miliaceum Scott D. White, Justin M. Wood 2008-4-22 11905 Orange Telegraph Canyon Road, E of Carbon Canyon Regional Park. 152 Comment
  RSA695484  Piqueria trinervia James Snow 1928-09 s.n. Orange Santa Ana Comment
  SEINET5642640  Pistacia atlantica Shelby J. Wood 2013-3-9 10 Orange Huntington Beach, Central Park.; 0 Comment
  CDA21582  Pittosporum crassifolium Mark A. Elvin, D. G. Kelch, B. S. Herhus, Patricia Iluore 2006-12-9 5324 Orange Southern Coastal; Newport Backbay; along Bayside Drive ca. 100 miles west of Eastbluff Drive. Comment
  CAS-BOT-BC354027  Plagiobothrys acanthocarpus R. E. Riefner, Jr. 2013-3-17 13 -44 Orange City of Irvine, Jeffrey Trail, vicinity of Shady Canyon Dr. at Fossil Rd. 47 Comment
  RSA599652  Plagiobothrys acanthocarpus Fred M. Roberts 1995-4-21 4933 Orange Irvine: San Joaquin Hills, Quail Hill area near end of San Canyon Road, 2.5 km ENE French Hill. 52 Comment
  UCSB56510  Plagiobothrys acanthocarpus Marsh, G. 1978-3-17 Orange U.C. Irvine Ecological Preserve; near eastern fence line, drainage separating Hills #1 and #2 Comment
  UCR222387  Plagiobothrys collinus Mark A. Elvin 2003-1-26 2237 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  IRVC25396  Plagiobothrys collinus var. californicus Fred M. Roberts 1987-4-3 3341 Orange San Joaquin Hills; Irvine; central Shady Canyon, 2.9km NE Signal Hill. Central coastal 107 Comment
  UCSB14546  Plagiobothrys collinus var. californicus Breedlove, Dennis 1962-3-9 Orange 4.4 miles east of San Juan Capistrano on State 74 112 Comment
  UCSB52464  Plagiobothrys collinus var. fulvescens Roberts, Fred 1982-4-2 Orange Laguna Niguel; hills, 3.5 km. ESE Aliso Peak; 3.2 km. ESE Alicia Fire Station, N of Del Avion 100 Comment
  JEPS68105  Plagiobothrys nothofulvus Alice King 1908-1 Orange Santa Ana Comment
  UCSB48118  Plagiobothrys nothofulvus Roberts, Fred 1982-4-3 Orange Rancho Mission Viejo: Calif. 47; 7.2 km. by road E San Juan Capistrano; 1.3 km NE Viejo Survey Marker 98 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
  RSA666092  Planodes virginica Fred M. Roberts, Michelle Lee, Kristen Szabo 2001-4-13 5430 Orange Rancho Mission Viejo: Chiquita Ridge, 0.3km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. 226 Comment
  RSA412598  Plantago bigelovii subsp. californica Anstruther Davidson 1910-04 2350 Orange Corona Del Mar. Comment
  RSA799623  Plantago elongata subsp. elongata Justin M. Wood 2011-4-12 3655 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  RSA764441  Plantago erecta Doris Bowers 1971-4-19 1684 Orange Black Star Canyon Indian Site 762 Comment
  UCR5210  Plantago erecta Barbara T. Gittins, O. F. Clarke 1966-3-19 893 Orange Pacific slope, Irvine Ranch, east of University of California Irvine campus, Newport Beach 91 Comment
  RSA763  Plantago ovata var. fastigiata J. T. Howell 1927-6-9 70 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  RSA749040  Platanus X acerifolia A. C. Sanders, Fred M. Roberts 2008-8-7 35976 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  SD236357  Platanus acerifolia A. C. Sanders, Fred M. Roberts 2008-8-7 35976 Orange Peninsular Range; Santa Ana mountains: lower Weir Canyon , at narrow gorge c. 0.6 miles above moth of cyn at Irvine Ranch gate. 185 Comment
  UCR193300  Platanus racemosa A. C. Sanders, Fred M. Roberts 2008-6-17 35471 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 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
  SD218285  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-3-18 07 153 Orange City of Newport Beach, Dover Beach, Newport Bay, vicinity of Morning Star Ln. and Polaris Dr. Comment
  RSA731530  Plecostachys serpyllifolia R. E. Riefner 2006-7-26 06 -319 Orange City of Irvine, along N side of Irvine Blvd. at SR 133 on-ramp. 62 Comment
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Dec 13 2012
  RSA751406  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-4-28 07 -190 Orange City of Newport Beach, Dover Beach, vicinity of Morning Star Ln., and Polaris Dr. 8 Comment
  UCSB57585  Plectritis ciliosa Roberts, Fred 1984-4-14 Orange Santa Ana Mtns.: Chiquito Basin, San Juan Trail, 1.9km SW Blue Jay Campground; 2.8km S Los Pinos Peak 840 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
  RSA933  Pluchea odorata J. T. Howell 1927-10-29 780 Orange Bryant Ranch near Long Beach. 15 Comment
  UCR220961  Pluchea sericea Dick Newell, Don Millar 2010-4-27 020 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Agua Chinon wash 1/4 mile north of Hwy 241 toll road 226 Comment
  UCR170302  Poa annua J. B. Anderson 1966-4-25 619 Orange South Coast, 20021 Birch Street, Santa Ana 15 Comment
  IRVC22700  Poa scabrella Fred M. Roberts 1985-5-9 1784 Orange Santa Ana Mountains: Upper McVicker Canyon, 1.8km NE Los Pinos Peak. Peninsular Ranges 1113 Comment
  UCR138440  Poa secunda R. E. Riefner Jr. 2000-4-15 20- 379 Orange Santa Ana Mtns., North Ranch Policy Plan Area Main Divide Road; south of Gypsum Canyon and south of Windy Ridge 518 Comment
  UCR150913  Poa secunda subsp. secunda Valerie Soza, LeRoy Gross 1999-6-10 527 Orange Santa Ana Mountains, Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road 1555 Comment
  CAS-BOT-BC225238  Polemoniaceae E. W. Lathrop 1974-6-27 7420 Orange Trabuco Oaks, Trabuca Canyon, Cleveland Nat'l Forest 396 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
  RSA424  Polygala cornuta var. fishiae J. T. Howell 1927-6-24 202 Orange Aliso Canyon, Rancho Santa Ana. 274 Comment
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May 23 2008
  RSA460143  Polygala cornuta var. fishiae Theodore Payne 1917-1 3122 Orange Santiago Canyon. Comment
  UCR175446  Polygala cornuta var. fishiae Mark A. Elvin, A. C. Sanders 2005-9-2 4496 Orange Peninsular Ranges, Santa Ana Mtns: Mouth of Lion Canyon, just upstream from Lower San Juan Campground 457 Comment
  CAS-BOT-BC110520  Polygonum Mrs. H. C. Cantelow 1933-7-9 431 Orange Coast near San Juan de Capistrano. Comment
  SDSU9677  Polygonum F. Youngberg Orange Santa Ana River Bed near Chino. Comment
  UCR46714  Polygonum aviculare B. G. Pitzer, D. C. Hawks 1986-12-17 0380 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
  RSA0051242  Polygonum aviculare Keith E. Hoffmaster 1934-1 491 Orange Santa Ana. Comment
  RSA0054921  Polygonum aviculare Keith E. Hoffmaster 1926-12-18 490 Orange Santa Ana. Comment
  POM2364  Polygonum aviculare subsp. aviculare D. L. Crawford 1916-7-26 s.n. Orange Aliso Canyon. Comment
  UCR150564  Polygonum hydropiperoides Scott D. White, Matt Carlton 2003-11-20 9868 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 24 Comment
  UCR150563  Polygonum lapathifolium Scott D. White, Matt Carlton 2003-11-20 9869 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 24 Comment
  RSA542468  Polygonum lapathifolium Fred M. Roberts, Gordon A. Marsh 1987-8-31 3588 Orange Santa Ana River: adjacent to Santa Ana, 0.6km S Edinger bridge. 14 Comment
  RSA5941  Polygonum lapathifolium Carl B. Wolf 1932-7-7 3835 Orange Bryant Ranch, along drainage ditch on Bixby Ave. 9 Comment
  RSA698540  Polypodium californicum Jeanne Paxton 1934-2-25 s.n. Orange Sugar Loaf Canyon, Arch Beach Comment
  UCSB62525  Polypodium californicum Kiefer, Lawrence 1963-11-17 Orange Santa Ana Mtns., Trabuco Canyon, vicinity of the upper canyon camps. 762 Comment
  IRVC19535  Polypodium californicum R. L. Allen 1977-2-13 s.n. Orange Viejo Canyon, off Hwy 74, 15.5mi NE San Juan Capistrano; steep, rocky seep above San Juan Creek. Santa Ana Mountains Comment
  RSA483352  Polypogon monspeliensis E. Crow 1929-4-7 294 Orange SE of Orange Co. Park; Santa Ana River. Comment
  UCR102003  Polypogon monspeliensis B. G. Pitzer 1997-3-25 3037 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, on bluffs immediately above beach, along trail that winds around restoration area and down to beach. 30 Comment
  UCR174022  Polypogon monspeliensis A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33055 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  CAS-BOT-BC237507  Polypogon viridis Le Roy Abrams 1901-6-12 1760 Orange Santa Ana River Comment
  RSA735748  Polypogon viridis A. C. Sanders, Fred M. Roberts 2008-6-17 35494 Orange Lomas de Santiago, West Loma Ridge Spur Road c. 0.8 mi SW of Irvine Lake and 0.9 mi. SE of Sheriff's Training Facility, just east of Hwy 241 280 Comment
  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
  UCR171019  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr. 2006-4-8 06- 111 Orange South Coast, San Juan Capistrano (city), San Juan Creek at La Novia Ave. 22 Comment
  UCR195011  Populus balsamifera subsp. trichocarpa A. C. Sanders, Fred M. Roberts 2008-8-7 35974 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  RSA542355  Populus trichocarpa Fred M. Roberts Jr. 1987-5-12 3437 Orange Santa Ana River: Horseshoe Bend, 3.9km S San Juan Hill; 1.0km ENE Wier Canyon Road bridge. 104 Comment
  RSA599636  Populus trichocarpa Fred M. Roberts Jr., P. Barrett, Gina Schultz 1995-7-25 4965 Orange San Juan Capistrano: San Juan Creek, 0.1 km SW La Novia Street bridge. 27 Comment
  RSA788957  Populus trichocarpa Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49562 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  SD187474  Populus trichocarpa R. E. Riefner Jr 2007-6-12 07 253 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek 35 Comment
  CAS-BOT-BC445244  Portulaca oleracea Ira L. Wiggins 1965-11-7 20360 Orange Vacant lot between State College Blvd. and Troy High School campus, Fullerton. Comment
  CAS-BOT-BC452122  Potamogeton crispus John Thomas Howell 1928-9-6 4079 A Orange Santa Ana River bottom, Santa Ana Canon [Canyon] 152 Comment
  POM6395  Potamogeton nodosus L. T. Street, Williams 1919-5-4 2689 Orange Laguna Lakes. [now Big Laguna Lake, San Diego Co.] Comment
  JEPS47201  Potentilla anserina subsp. pacifica Lawrence M. Booth 1932-6-28 1215 Orange Bolsas Creek Comment
  RSA699853  Prunus ilicifolia J. Vlahos 1934-4-22 s.n. Orange Harding Canyon Comment
Read comments
Jun 10 2012
  RSA573301  Prunus persica Steve D. Boyd, Tim S. Ross 1994-9-14 8358 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon just downstream of Lucus Canyon Trail crossing near old mining camp. 299 Comment
  JEPS29201  Pseudognaphalium biolettii Rimo Bacigalupi and P. C. Hutchison 1962-3-16 8235 Orange 2 mi n Doheny Beach State Park; U.S. Highway 101 Comment
  UCR140802  Pseudognaphalium biolettii Robin G. Marushia 2004-4-16 020 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
  UCR217456  Pseudognaphalium biolettii Mark A. Elvin 2003-1-26 2227 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  UCR240259  Pseudognaphalium biolettii D. E. Bramlet 2003-3-20 3349 Orange South Coast, Donna O'Neill Reserve; NE corner of the reserve, 150 m west of Cristianitos Rd. and 1.9 km north of the E-W access road 134 Comment
  CAS-BOT-BC356662  Pseudognaphalium californicum A. M. White 1974-6-2 1417 Orange Ca. 20 mi. E. of Santa Ana, CA N. of Silverado Canyon Comment
  UCSB47584  Pseudognaphalium californicum Roberts, Jr., Fred 1980-4-3 Orange Along Highway 74, 0.2 km. SW of Orange-Riverside Co. line, 0.4 km. NNE Lower San Juan Picnic Ground 420 Comment
  UC468798  Pseudognaphalium californicum C. F. Millspaugh 1920-2-7 4697 Orange Pebble Beach Road Comment
  UC2027329  Pseudognaphalium leucocephalum Robert Lee Allen 2012-8-11 Orange Santa Ana Mts, Caspers Wilderness Park, Bell Canyon. Comment
  UC537030  Pseudognaphalium stramineum Lawrence M. Booth 1932-7-19 1275 Orange Bolsas Marsh Comment
  MACF020379  Pseudotsuga macrocarpa B. Thomas 1967-12-22 57 - Orange Santiago Park; Santa Ana Mountains 1523 Comment
  RSA587887  Psilocarphus brevissimus Fred M. Roberts 1990-5-7 4612 Orange Rancho Mission Viejo: Ridge S of Blind Canyon and E of Christianitos Canyon, TRW Lease Holding, 5.0 km NE Clemente Survey Marker 152 Comment
  RSA608536  Psilocarphus brevissimus D. Bramlet 1993-4-25 2333 Orange University of California, Irvine Campus, UCI Ecological Reserve. This site is 150 ft. south of Berkeley Ave. and 1000 ft. west of the northeast reserve entrance 41 Comment
  RSA263691  Psilocarphus tenellus E. W. Lathrop 1966-4-10 6155 Orange Silverado Canyon, Santa Ana Mountains, Cleveland National. Forest, Trabuco District. 366 Comment
  MACF025734  Psilotum nudum C. Eugene Jones 1988-10-31 Orange Grown in CSUF greenhouse complex Comment
  UCR158852  Psoralea macrostachya A. C. Sanders, Mark A. Elvin 2005-9-2 31605 Orange Peninsular Range; Santa Ana Mtns., mouth of Lion Canyon near Lower San Juan Picnic Area, San Juan Creek Canyon 427 Comment
  POM8744  Pterostegia drymarioides P. A. Munz, R. D. Harwood 1920-4-20 3724 Orange Santa Ana Mountains: Silverado Canon 549 Comment
  RSA198  Pterostegia drymarioides J. T. Howell 1927-6-24 198 Orange Aliso Canyon, Rancho Santa Ana. 274 Comment
  RSA392941  Pterostegia drymarioides Albert J. Perkins 1913-4-27 s.n. Orange Trabuco Canon. Comment
  RSA698490  Pterostegia drymarioides R. H. McArthur 1934-4-28 s.n. Orange Ladd Canyon Comment
  RSA737547  Pterostegia drymarioides Fred M. Roberts 2008-3-12 6714 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA542463  Pterostegia drymarioides Fred M. Roberts 1987-3-27 3279 Orange Canada De Los Alisos: above Canada Rd., 4.5 km NNE El Toro Fire Station. 226 Comment
  CAS-BOT-BC362141  Pulicaria paludosa R. G. Ahlefeld 1959-7-15 s.n. Orange Santa Ana Canyon, e. of Fullerton Comment
  JEPS35293  Pulicaria paludosa R. L. Pope 1963-9-23 Orange approx 0.75 mi above Yorba Linda Bridge; Sanat Ana Canyon Comment
  UCR101362  Pulicaria paludosa A. C. Sanders, P. J. MacKay, Tim Thomas, O. F. Clarke 1998-10-17 22266 Orange Coastal flats, Bolsa Chica, near Bolsa Bay, south of Warner Ave., east of the Pacific Coast Highway .3 Comment
  UCR151234  Pulicaria paludosa Steve Boyd, R. E. Riefner 2000-9-13 10307 Orange Peninsular Ranges; Santa Ana Mts region, Santa Ana Mountains: Fremont Canyon, about 1.5 air miles west of Oat (a.k.a. Oak) Flat and 1.5 miles southeast of Claymont clay mine. 427 Comment
  UCR193770  Pulicaria paludosa A. C. Sanders, Fred M. Roberts 2008-7-3 35710 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
  UCR211082  Pulicaria paludosa Joseph Cahill 2009-8-21 3172 B Orange South Coast, Bolsa Chica Ecological Reserve 1 Comment
  UCR188933  Punica granatum Robert DeRuff 2007-11-24 s.n. Orange Newport Beach, Upper Newport Bay, lower Big Canyon near Back Bay Drive 3 Comment
  RSA5283  Quercus agrifolia Carl B. Wolf, B. D. Stark 1932-12-19 4432 Orange Skyline Drive, Black Star Canyon, 2 miles below summit 610 Comment
  IRVC20824  Quercus agrifolia var. agrifolia Fred M. Roberts 1982-7-25 784 Orange South Laguna; Niguel Hill, canyon on S flank; 0.9km ESE Aliso Peak; 1.1km NNW Bench Mark 133 Southern Coastal 195 Comment
  UCSB48077  Quercus agrifolia var. agrifolia Roberts, Fred 1981-4-11 Orange Santa Ana Mtns., San Juan Canyon, Hwy 74, 2.7km ENE San Juan Guard Station 96 Comment
  CAS-BOT-BC86440  Quercus berberidifolia P. C. Everett; E. R. Johnson 1937-11-30 9379 Orange Santa Ana Mts., Bold Meadow at head of Claymine Canyon on slopes of Sierra Peak 762 Comment
  CAS-BOT-BC86441  Quercus berberidifolia P. C. Everett; E. R. Johnson 1937-11-30 9379 Orange Santa Ana Mts., Bold Meadow at head of Claymine Canyon on slopes of Sierra Peak 762 Comment
  IRVC24545  Quercus berberidifolia Fred M. Roberts, R. L. Allen 1985-8-19 2138 Orange Mission Viejo: lateral to Engilish Canyon along Vista de Lago Drive; 3.4km ENE El Toro Fire Station. Southern Coastal 218 Comment
  RSA663280  Quercus berberidifolia R. E. Riefner Jr. 2000-6-22 20 -572 Orange NCCP North Ranch Policy Plan Area, NE property; along National Forest boundary, at powerline. 756 Comment
  UCR228787  Quercus berberidifolia Dick Newell, Don Millar 2011-5-3 142 Orange Coastal Plains, San Joaquin Hills, Laguna Canyon Wilderness Park, Willow Trail 160 Comment
  UCR242756  Quercus berberidifolia Fred M. Roberts 2012-5-10 7689 Orange Peninsular Ranges; Coastal Foothills, San Joaquin Hills, south fork of Buck Gully, north slope Pelican Hill, 0.6 km N summit Pelican Hill, north of Pelican Hill Drive 183 Comment
  IRVC23279  Quercus engelmannii Karlin G. Marsh 1987-4-20 s.n. Orange Casper's Regional Park; Lucas Canyon near park boundary; canyon bottom. Southern Coastal Comment
  RSA702211  Quercus engelmannii Fred M. Roberts, Robert L. Allen 2004-1-16 6019 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.56 km SSW Gato Gate and 0.15km W of Cristianitos Rd. 92 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
  UC5679  Quercus wislizeni W. H. Brewer Jan 1861 137 Orange Santa Ana Mountains 914 Comment
  IRVC22420  Quercus wislizeni var. frutescens Gordon A. Marsh, Karlin G. Marsh 1985-10-27 s.n. Orange Pine Canyon; 4.1km NW Modjeska Peak. Santa Ana Mountains 805 Comment
  IRVC24473  Quercus wislizeni var. frutescens Fred M. Roberts, R. L. Allen 1986-2-23 2595 Orange Santa Ana Mountains; W of Main Divide Truck Trail; 2.1km E Los Pinos Peak. Peninsular Ranges 1115 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
  POM293  Ranunculus californicus D. L. Crawford s.n. Orange Near Laguna Beach Comment
  POM303771  Ranunculus californicus Lyman Benson 1947-4-27 12338 Orange Carbon Canyon. Chino-Puente Hills; Pacific Slope Drainage Area. 244 Comment
  UC1971227  Ranunculus californicus Scott D. White, Noel Davis 1998-4-24 6344 Orange MISSION VIEJO AREA: Aliso Creek watershed, east of El Toro Rd. just N of junction. w/ Valley Vista Wy. Large proposed subdivision called Saddleback Meadow. USGS Santiago Peak 7.5' Quad. Comment
  UCR241898  Ranunculus californicus Fred M. Roberts 2012-4-24 7531 Orange Peninsular Ranges; coastal foothills, 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
  IRVC29093  Ranunculus californicus var. californicus Fred M. Roberts 1989-3-17 4208 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  IRVC22186  Raphanus raphanistrum Fred M. Roberts 1985-4-11 1645 Orange Dana Point Headlands; Weyerhaeuser Horticultural Research Station property. Southern Coastal 61 Comment
  IRVC1150  Raphanus sativus R. Nesheim 1965-4-10 Orange Bayside Dr. near Balboa Island. Newport Beach Comment
  IRVC1151  Raphanus sativus J. Morgan 1965-3-20 Orange 17th St. and Irvine Ave. Costa Mesa Comment
  RSA0064525  Raphanus sativus T. Pringle 1966-2-10 4 Orange In the field behind the Sunny Crest Drive at Harbor Blvd., Fullerton. Comment
  UCR188929  Rauvolfia samarensis Robert DeRuff 2007-11-24 s.n. Orange Newport Beach, Upper Newport Bay, above Back Bay Drive in the vicinity of the Narrows, c. 0.8 km north of Big Canyon 26 Comment
  CDA3882  Reseda alba Johnson 1939-4-1 Orange Los Angeles - Garden Grove. 0 Comment
  CDA25895  Rhamnus alaternus Mark A. Elvin, D. G. Kelch 2006-12-9 5300 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  LA207810  Rhamnus crocea subsp. ilicifolia Carl B. Wolf; 1931-3-6 1845 Orange Santa Ana Mountains, Trabuco Canyon, 0.5 mi. above Trabuco Oaks 457 Comment
  CAS-BOT-BC402199  Rhamnus ilicifolia R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49703 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  CAS-BOT-BC55960  Rhamnus ilicifolia P. A. Munz; R. D. Harwood 1920-4-24 3765 Orange Santa Ana Canyon, Hillside, Sierra Canyon 365 Comment
  RSA512408  Rhamnus ilicifolia Fred M. Roberts 1987-3-31 3296 Orange Lomas De Santiago: Lomas Ridge, Upper Serrano Canyon east fork, 2.8 km SE Bolero Lookout 345 Comment
  UCR234142  Rhamnus ilicifolia Dick Newell, Judy Booth 2012-3-30 242 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, Cleveland National Forest 258 Comment
  UC1121807  Rhamnus tomentella subsp. tomentella A. Lewis May 1934 417 Orange Trabuco Canyon Cleveland National Forest, Elsinore Quad. 1371 Comment
  UCR37790  Rhus integrifolia Steve Boyd, L. LaPre 1981-5-27 s.n. Orange Santa Ana Mtns., Northern end of the Santa Ana Mtns., along powerline road on ridges east of Weir Canyon & at the head of Gypsum Canyon. Comment
  UCD116944  Rhus ovata P. B. Kennedy 1925-1-12 3 Orange Irvine Range. Comment
  UCSB12554  Rhus ovata Huot, J. 1961-3-26 Orange Laguna Canyon Road, 9 miles from Highway 101 304 Comment
  RSA16351  Rhus trilobata var. quinata Percy C. Everett 1935-6-18 7181 Orange Santa Ana Mountains. Main divide motorway to Santiago Peak, 1 mile from Ortega Highway. 732 Comment
  RSA3192  Rhus trilobata var. quinata B. D. Stark 1931-6-6 2232 Orange Rancho Ranta Ana. Comment
  RSA0022442  Ribes amarum Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49777 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  RSA735255  Ribes californicum Pomeroy 1929-2-10 71 Orange Silverado Canyon. Comment
  CAS-BOT-BC93072  Ribes californicum var. hesperium Carl B. Wolf 1930-1-30 1824 Orange Claymine Canyon, Santa Ana Mountains. 457 Comment
  LA205460  Ribes californicum var. hesperium W. Pequegnat; 1938-3-19 sn Orange Santa Ana Mountains, junction of Holy Jim and Trabuco Canyons 670 Comment
  UC484258  Ribes californicum var. hesperium C. B. Wolf 1931-3-6 1849 Orange 1 mi below Trabuco Camp Ground; Santa Ana Mts., Trabuco Canyon 609 Comment
  UCR113461  Ribes californicum var. hesperium R. E. Riefner Jr. 2000-8-8 20- 720 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, E slope of upper Fremont Canyon, south of Donaldson Ranch and south of powerline/ National Forest boundary 454 Comment
  RSA0027776  Ribes californicum var. hesperium Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49693 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA698891  Ribes hesperium Tozier, Estes 1950-1-30 s.n. Orange Silverado. Comment
  RSA1175  Ribes indecorum B. D. Stark 1930-2-21 1475 Orange Black Star Creek. 457 Comment
Read comments
Sep 5 2013
  RSA5409  Ribes indecorum Carl B. Wolf 1932-12-19 4440 Orange Main divide of Santa Ana Mts. between Sierra Peak and Skyline Drive. 762 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
  UC484246  Ribes indecorum C. B. Wolf 1931-3-6 1861 Orange 1 mi n of base Modieska Grade (w slope of mts.); Santa Ana Mts. 304 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-BC168943  Ribes malvaceum James R. Shevock 1975-4-6 4138 Orange Along Black Star Canyon Road above Hidden Ranch, Santa Ana Mountains 670 Comment
  RSA0016317  Ribes malvaceum var. malvaceum Jim Riley 2011-1-3 1 Orange Caspers Wilderness Park (approx. 1 km west of Cleveland National Forest Boundary). Adjacent to Ridge Trail. 474 Comment
  SD236308  Ribes malvaceum var. malvaceum Jim Riley 2011-1-3 1 Orange Caspers Wilderness Park (approx. 1 km west of Cleveland National Forest Boundary). Adjacent to Ridge Trail. 473 Comment
  SBBG128689  Ribes malvaceum var. viridifolium R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49706 Orange Sierra Peak; Santa Ana Mtns 900 Comment
  LA205495  Ribes roezlii W. Pequegnat; 1938-6-15 sn Orange Santa Ana Mountains, Santiago Peak Comment
  RSA0018258  Ribes roezlii Robert F. Thorne, E. W. Lathrop 1977-5-18 49739 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  RSA0018259  Ribes roezlii Carl B. Wolf 1933-8-24 5395 Orange Summit of Santiago Peak, Santa Ana Mountains. 1707 Comment
  RSA2066  Ribes speciosum Carl B. Wolf 1931-3-6 1863 Orange 1 mile north of mouth of Harding canyon, west slope of Santa Ana Mts. 305 Comment
  RSA734883  Ribes speciosum Minor Warne 1934-03 s.n. Orange Gypsum canyon Comment
  UCR151029  Ribes speciosum Scott D. White 1997-5-6 5038 Orange Peninsular Ranges; Santa Ana Mtns., Lomas de Santiago; Santiago Canyon area; unnamed tributary to Santiago Creek flowing from the SW, directly west of Pancho Canyon 396 Comment
  IRVC1315  Ricinus communis D. Van Gorden 1965-5-3 Orange 2008 Meyer Place. Costa Mesa Comment
  POM2748  Ricinus communis M. Harbour 1915-3-28 s.n Orange Orange. Comment
  UCR100446  Ricinus communis B. G. Pitzer 1996-4-30 2779 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  RSA267967  Ricinus communis E. W. Lathrop 1977-6-16 7655 Orange Silverado Canyon. Santa Ana Mts. Cleveland National Forest, Trabuco District. 365 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
  RSA131396  Romneya coulteri E. K. Balls, R. M. Beeks, Howard Brown 1958-6-27 23277 Orange 1 miles E of Silverado Stn. Silverado canyon, Santa Ana Moutains. 518 Comment
  RSA722424  Romneya coulteri G. Gentges 1932-5-8 s.n. Orange Silverado Canyon Wash. Comment
  UC1607972  Romneya coulteri Donald G. Nelson 1936-6-13 435 Orange E of Anaheim on S Placentia Ave. Comment
  UC1618115  Romneya coulteri Donald G. Nelson 1936-6-5 435 Orange Hills NE of Fullerton 91 Comment
  UCR193373  Romneya coulteri A. C. Sanders, T. B. Salvato 2008-5-13 35373 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
  SD72247  Rorippa nasturtium-aquaticum R. S. Woglum 1932-4-16 Orange Trabuco Canyon Comment
  RSA304832  Rosa californica James R. Shevock 1970-4-25 157 Orange Santa Ana Mts. 168 Comment
  RSA699220  Rosa californica W. Blanchard 1932-5-15 s.n. Orange Trabuco canyon Comment
  RSA0045579  Rosa californica R. H. McArthur 1934-4-21 s.n. Orange Limestone Boyscout Camp. Comment
  UCR128315  Royena lycioides subsp. lycioides A. C. Sanders, Mark A. Elvin 2003-10-12 27331 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  UCR154242  Royena lycioides subsp. lycioides Mark A. Elvin 2004-5-2 3418 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  JEPS39886  Rumex conglomeratus Lawrence M. Booth 1932-6-9 1178 Orange ner coast Santa Ana River Comment
  UC729653  Rumex conglomeratus Carl B. Wolf 1932-6-13 Orange Malvern and Nicholas Avenues Fullerton 53 Comment
  UCR138400  Rumex conglomeratus Scott D. White, Brian Leatherman 1997-6-12 5340 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
  VVC896  Rumex crispus B. G. Pitzer 1997-3-25 3013 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy & the bike trail. 30 Comment
  RSA527694  Rumex crispus Tim S. Ross, Annette H. Ross 1991-6-3 5520 Orange Elephant Hill: northernmost point of the Puente Hills complex. 296 Comment
  RSA4502  Rumex hymenosepalus Carl B. Wolf 1932-3-15 2712 Orange 1 mi. W of Atwood, lower end of Santa Ana Canyon. 76 Comment
  POM201764  Rumex maritimus L. M. Booth 1932-6-28 s.n. Orange Bolsas Marsh. 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
  UC205909  Rumex maritimus D. L. Crawford 1916-7-26 Orange Laguna Canyon Laguna Beach Region Comment
  UCR158464  Rumex maritimus Adrian Wolf 1998-5-27 334 Orange South Coast, Newport Slough, south of oil fields, between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 2 Comment
  IRVC24801  Rupertia physodes Fred M. Roberts, G. A. Marsh 1986-5-16 2909 Orange Ridge above San Juan Canyon, Sitton Peak Truck Trail, 4.0km W Sitton Peak, Santa Ana Mountains 670 Comment
  RSA512756  Rupertia physodes Walter Wisura, Bart O'Brien, M. Durant 1990-6-12 4447 Orange Along forest rd. 3SO4 fr. 2.15 miles Ortega Hwy. to Santiago Peak. Comment
  HSC25555  Ruppia maritima James Henrickson 1970-7-24 5023 Orange 3 mi. NW of Huntington Beach, Inner Bolsa Bay, along margins of bay 0 Comment
  RSA304029  Ruppia maritima James R. Shevock 1973-9-30 3220 Orange Almost stagnant at the upper most regions of the upper Newport Back Bay, Newport Beach. Comment
  UCD92331  Rytidosperma Collector Unknown 1947-9-1 s.n. Orange Poverty Mesa near El Toro. Comment
  RSA478902  Salicornia virginica E. Yale Dawson 1948-8-15 5107 Orange Salt marshes bordering estuaries leading to Bolsas Bay. Comment
  JEPS14863  Salix exigua John P. Harrington 1932-6-29 3 Orange San Juan Capistrano Comment
  RSA6444  Salix exigua Carl B. Wolf 1932-7-7 3843 Orange Bixby Ave., 1 km. W of Hansen road near town of Los Alamitos. 8 Comment
  UCR174214  Salix exigua A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33041 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
  SBBG58943  Salix exigua var. hindsiana C. B. Wolf 1932-7-7 3845 Orange Rancho Santa Ana, Bixby Ave, 1 km W of Hansen Rd, near Los Alamitos 8 Comment
  UC536932  Salix exigua var. hindsiana Lawrence M. Booth 1932-6-9 1177 Orange 1 mi from ocean Santa Ana R. Comment
  RSA0093589  Salix gooddingii Fred M. Roberts 2014-4-21 7855 Orange South Coast. SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin. 113 Comment
  RSA137  Salix gooddingii J. T. Howell 1927-7-24 394 Orange Santa Ana River bottom near Rancho Santa Ana. 152 Comment
  RSA603346  Salix gooddingii Scott D. White, B. Leatherman 1997-6-12 5324 Orange East of San Juan Capistrano: San Juan Creek beteen Highway 74 bridge and Mission Vieja site, i.e. ca. 2 - 4 miles E of I-15 [Interstate 5] / Highway 74 junction. 46 Comment
  RSA748273  Salix gooddingii A. C. Sanders, Fred M. Roberts 2008-6-17 35515 Orange middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  UCR258627  Salix gooddingii Fred M. Roberts 2014-4-21 7855 Orange South Coast, SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin 113 Comment
  RSA0030838  Salix gooddingii Carl B. Wolf 1932-4-8 2950 Orange Rancho Santa Ana, near Sant Ana River, Sasnta Ana Canyon. 120 Comment
  RSA735353  Salix laevigata R. H. McArthur 1934-3-1 s.n. Orange Santa Ana River at 1st Street. Comment
  UC506452  Salix laevigata Carl Hedin and Joseph Ewan 1932-7-9 7685 Orange 8 mi. below Prado (Rincon) (Santa Ana R.); Santa Ana R. Comment
  UC537282  Salix laevigata Philip A. Munz and L. M. Booth 1932-12-16 1380 Orange 1/2 mi from ocean Santa Ana R. (w of Wolfe's Ranch) Comment
  UCSB52859  Salix laevigata Roberts, Fred; Camp, H. 1984-4-24 Orange Wagon Wheel Regional Park: Wagon Wheel Canyon, 2.9km ENE Median Rancho Survey Mark; 0.5km WNW Bench Mark 422 135 Comment
Read comments
Oct 28 2018
  RSA793258  Salix lasiandra Robert F. Thorne 1984-1 s.n. Orange Newport Back Bay. Comment
  POM362785  Salix lasiolepis E. Crow 1929-4-7 316 Orange Corona Skyline Drive. 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
  UC1618070  Salix lasiolepis Donald G. Nelson 1935-7-6 205 Orange San Juan Canyon Comment
  UCR174190  Salix lasiolepis A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33016 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
  RSA737855  Salix lucida subsp. lasiandra R. E. Riefner 2008-5-20 8 -108 Orange Irvine Ranch Reserve, North Irvine Ranch, S Donaldson Ranch ca. 0.75 mi along West Fork of upper Fremont Canyon. 405 Comment
  CAS-BOT-BC126302  Salix sessilifolia John Thomas Howell 1927-6-6 2440 Orange Santa Ana River bottom, Santa Ana [Canon] Canyon 152 Comment
  CAS-BOT-BC126303  Salix sessilifolia Carl B. Wolf 1932-4-15 2954 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon 120 Comment
  CAS-BOT-BC126312  Salix sessilifolia Carl B. Wolf 1932-4-15 2953 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon 120 Comment
  CAS-BOT-BC126313  Salix sessilifolia Carl B. Wolf 1932-7-7 3845 Orange Rancho Santa Ana, along ditch on Bixby Ave., 1 km. west of Hansen Road, near town of Los Alamitos 7 Comment
  CAS-BOT-BC403758  Salpichroa origanifolia E. L. Paddock 1943-5-28 12744 Orange Little Tia Juana Campsite, sunny hills Ranch, Fullerton Comment
  UCR240079  Salsola australis Dick Newell, Don Millar 2012-10-9 305 Orange South Coast, Newport Beach, Buck Gully 1/2 mile south of San Joaquin Hills Road 150 Comment
  UCLA55657  Salvia C. Epling and H. Lewis 1940-4-21 Orange 6 mi e San Juan Capistrano Comment
  RSA50451  Salvia apiana G. R. Campbell 1949-6-28 14009 Orange native to Botanic Garden, collected in picnic area. 198 Comment
  HSC14342  Salvia columbariae J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  RSA0127603  Salvia columbariae Fred M. Roberts 2016-3-25 8033 Orange San Joaquin Hills: Bommer Canyon, west slope near south end fo Nature Loop Trail, 0.1 km NW Cattle Camp and 1.6 km NE summit of Signal Peak. 146 Comment
  SD42978  Salvia columbariae EB H mar 1948 Orange Ner San Juan Camp Comment
  RSA700086  Salvia columbariae Unspecified 1935-02 s.n. Orange Ortega highway near San Juan Springs. Comment
  UCR188943  Salvia leucantha Robert DeRuff 2006-1 564 Orange Newport Beach, Upper Newport Bay, near end of 23rd Street on west side of the Bay 11 Comment
  RSA160467  Salvia leucophylla J. D. Olmsted 1959-4-23 465 Orange Hidden Ranch in Black Star Canyon; 5 miles E of Irvine Lake. Santa Ana Mountains. Drainage area to Irvine Reservoir. 579 Comment
  UCR131875  Salvia leucophylla J. Mallory, V. McCoy 1995-7-3 6465- 102 Orange Santa Ana Mountains: Blind Canyon, c. 0.5 mi. east of confluence with Santiago Canyon, on a W-facing slope. north of Irvine Lake 300 Comment
  UCSB50643  Salvia leucophylla Roberts, Fred; Allen, R. 1982-7-4 Orange Chino Hills; Carbon Canyon, Carbon Canyon Rd; 0.6km by road SW county line; 2.3km NNW Gilman Peak 250 Comment
  CAS-BOT-BC229997  Salvia mellifera Marcus E. Jones 1926-3-10 s.n. Orange Near Santa Ana Canon [Canyon] Comment
  HSC14361  Salvia mellifera C. L. Hitchcock, C. V. Muhlick 1964-3-17 23066 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  RSA731981  Salvia mellifera A. C. Sanders 2008-4-8 34779 Orange Peninsular Range: Lomas de Santiago, SSE os f Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon. 475 Comment
  UCR223424  Salvia mellifera Dick Newell, Don Millar 2011-3-1 070 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 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
  UCR239634  Salvia mellifera Fred M. Roberts 2012-4-24 7502 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  UCR83406  Salvia mellifera Jan West 1994-4-5 s.n. Orange Upper Bluebird Canyon, SE of Laguna Beach, at a park in the hills east of the head of Bluebird Canyon Road and east of housing developments. Comment
  UCR99553  Salvia mellifera B. G. Pitzer 1996-4-30 2798 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  SEINET12273226  Salvia mellifera J. F. Bright, Wyman, C. 1933-1 8174 Orange Near Laguna(?) Comment
  IRVC26683  Salvia sonomensis Mark A. Elvin 2004-4-4 3217 Orange UCI Arboretum Southern Coastal 15 Comment
  UC1936222  Salvinia minima R. E. Riefner Jr. 2008-7-9 08 -219 Orange City of Laguna Beach, bluff area W of West Street and Pacific Coast Highway 4 Comment
  IRVC9374  Sambucus mexicana R. Yarnell 1966-4-29 146 Orange Carbon Canyon near La Vida Mineral Springs. Chino Hills Comment
  UC1125355  Sambucus mexicana A. Lewis Mar 1934 335 Orange Santa Ana Canyon Corona Quadrangle Comment
  POM186292  Samolus parviflorus Joseph A. Ewan 1932-7-29 7716 Orange Bolsa Chica near Huntington Beach. Comment
  RSA734645  Sanicula bipinnatifida A. C. Sanders, Fred M. Roberts 2008-3-25 34569 Orange Peninsular Range; Santa Ana Mtns.: Saddle on ridge near head of Weir Canyon, 5.3 miles ENE of Villa Park, 3.1 mi. N of (Santiago Reservoir) Irvine Lake. 405 Comment
  RSA749317  Sanicula bipinnatifida Fred M. Roberts, Linda Farley 2008-3-28 6819 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
  RSA794245  Sanicula crassicaulis Doris Hoover Bowers 1971-4-19 1688 Orange Black Star Canyon Indian Site 762 Comment
  SD236165  Sanicula crassicaulis A. C. Sanders, Fred M. Roberts 2008-5-6 35267 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, slope SE of road junction along ridge road, near head of Aqua Chinon Cnayon, 2.4 miles north of El Toro 470 Comment
  RSA729933  Schefflera actinophylla A. C. Sanders, Mark Elvin 2006-12-22 33275 Orange South Coast: Irvine, UCI campus SW of intersection of Jamboree Blvd. and Campus Dr., just outside entrance to UCI Herbarium 15 Comment
  RSA729934  Schefflera actinophylla A. C. Sanders, Mark Elvin 2006-12-22 33275 Orange South Coast: Irvine, UCI campus SW of intersection of Jamboree Blvd. and Campus Dr., just outside entrance to UCI Herbarium 15 Comment
  RSA734917  Schinus molle A. C. Sanders, Fred M. Roberts 2008-6-17 35473 Orange Peninsular Range; Santa Ana Mtns: Lomas de Santiago, Augustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  UCR80018  Schinus molle Scott D. White 1992-10-1 951 Orange City of Brea, immediately north of Carbon Canyon Road & east of Placentia Ave. c. 1 mi (airline) S-SE of Tonner Canyon. 183 Comment
  RSA528055  Schinus terebinthifolius A. C. Sanders 1990-10-6 10201 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Highway 1. 1 Comment
  IRVC19942  Schismus barbatus Gordon A. Marsh, Karlin G. Marsh 1983-5-2 s.n. Orange Burn area between Coal Canyon and Gypsum Canyon. Santa Ana Mountains 421 Comment
  RSA735750  Schoenoplectus americanus A. C. Sanders, Fred M. Roberts 2008-6-17 35493 Orange Lomas de Santiago, West Loma Ridge Spur Road c. 0.8 mi SW of Irvine Lake and 0.9 mi. SE of Sheriff s Training Facility, just east of Hwy 241 280 Comment
  JEPS83156  Schoenoplectus californicus L. M. Booth 1932-6-9 1176 Orange Coastal Santa Ana River Comment
  RSA0058188  Schoenoplectus californicus Fred M. Roberts 2014-4-21 7872 Orange South Coast: San Joaquin Hills: Upper Laguna Lake 1 (upper Laguna Lake), south basin. 113 Comment
  RSA357142  Schoenoplectus californicus Robert F. Thorne 1975-4-6 45579 Orange Head of Newport Bay. Comment
  POM21177  Schoenoplectus maritimus Helen D. Geis s.n. Orange Peat Lands Comment
  RSA791473  Schoenoplectus maritimus Keith E. Hoffmaster 1934-7-15 155 Orange Near Santa Ana Comment
  RSA21060  Scirpus acutus var. occidentalis Ramon Valverde 1938-8-4 9444 Orange Rancho Santa Ana, Santa Ana Canyon 122 Comment
  RSA226634  Scirpus acutus var. occidentalis Christopher Davidson, Gerald L. Benny 1971-6-15 1540 Orange Brea Canyon, 0.5 mile N of Central Avenue, along Brea Creek, near Brea Oil Co. wells. Comment
  IRVC29697  Scirpus californicus Mark A. Elvin, Barry S. Nerhus 2006-11-4 5245 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  UCSB47993  Scirpus microcarpus Roberts, Fred 1980-6-25 Orange Santa Ana Mtns.; San Juan Canyon below Calif. Rte. 74; 2.4 km. ENE San Juan Guard Station; 0.3 km. WSW BM 1100 290 Comment
  UCSB48201  Scirpus microcarpus Roberts, Fred 1981-6-26 Orange Santa Ana Mtns.; San Juan Canyon; 0.1 km. N Lower San Juan Picnic Ground 390 Comment
  POM6374  Scrophularia californica subsp. floribunda Philip A. Munz, Street, Williams 1919-5-3 2617 Orange Santa Ana River Canyon. Comment
  RSA0012747  Scrophularia californica subsp. floribunda Fred M. Roberts 2012-5-10 7572 Orange San Joaquin Hills: Buck Gully, south tributary, north slope Pelican Hill, just north of Pelican Hills Drive, 0.7 km N Pelican Hill summit. 154 Comment
  UC1011912  Scrophularia californica subsp. floribunda F. W. Pennell and E. M. Harvey 1949-6-29 26811 Orange above San Juan Capistrano (pass at summit of Ortega Hwy) 792 Comment
  RSA594892  Scutellaria tuberosa Fred M. Roberts 1994-4-24 4905 Orange Santa Ana Mountains: San Juan Canyon, south side of CA route 74, 1.2 kilometers SW Lower San Juan Picnic Ground. 390 Comment
  UC1618101  Scutellaria tuberosa Donald G. Nelson 1935-7-6 258 Orange San Juan Canyon Comment
  RSA15  Selaginella bigelovii John Thomas Howell 1927-7-24 473 Orange Claymine Canyon, near Sierra Peak 167 Comment
  IRVC22654  Selaginella cinerascens D. Bramlet, W. Wright 1986-5-4 Orange knoll above Segundo Deschecha Canada and west of Christianitos Canyon Rancho Mission Viejo 212 Comment
  CAS-BOT-BC363477  Senecio californicus Helen D. Geis 1902-1-1 537 Orange Santa Ana Comment
  POM201687  Senecio flaccidus var. douglasii L. M. Booth 818 Orange Santa Ana Canyon bottom Comment
  LA203927  Senecio flaccidus var. douglasii W. E. Pequegnat; 1937-8-25 sn Orange Santa Ana Mountains, near Hyla (?) Stream Comment
Read comments
Jan 26 2015
  CDA25870  Senecio linearifolius Mark A. Elvin 2003-8-24 3011 Orange Southern Coastal; San Joaquin Hills, Irvine, UCI, 100 m N of the intersection of Shady Canyon Drive and Bonita Canyon Road Comment
  UCR147856  Senecio linearifolius Scott D. White 1998-6-26 6783 Orange Irvine, University of California, Irvine campus: low-lying seasonal wetland along mapped intermittent 'blueline' stream just north of Bonita Canyon Drive 70 Comment
  SD232203  Senecio linearifolius var. linearifolius Scott D. White 2003-7-7 9613 Orange Coastal plain: Irvine. UC Irvine Campus. Directly west of T-intersection of Shady Canyon Cr. w/ Bonita Canyon Dr. (= Culver Dr.). 70 Comment
  UCR204762  Senecio linearifolius var. linearifolius Scott D. White 2003-7-7 9613 Orange Coastal Plain, Irvine, UC Irvine Campus. Directly west of T-intersection of Shady Canyon Creek with Bonita Canyon Dr. (= Culver Drive) 70 Comment
  RSA743379  Senecio vulgaris Fred M. Roberts 2008-4-9 6859 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 52 Comment
  IRVC905  Senecio vulgaris I. L. Wiggins 1966-3-31 20569 Orange Fullerton; associated road 200m S of Imperial Highway on shoulder. Southern Coastal Comment
  UCR266420  Senna didymobotrya D. E. Bramlet 2009-11-13 4415 Orange South Coast, San Diego Creek between Irvine and Newport Back Bay 8 Comment
  RSA0069225  Senna marilandica Fred M. Roberts, Sandra Leatherman 2008-9-3 7080 Orange Yorba Linda: Santa Ana River Canyon, Santa Ana River, 0.6 km W Gypsum Cyn. bridge, south of La Palma Ave. 113 Comment
  IRVC1828  Setaria lutescens Robin Hobson 1965-4-10 HS 451 Orange Newport Beach; [Newport] Back Bay Southern Coastal Comment
  IRVC21695  Setaria lutescens Fred M. Roberts 1984-8-6 1366 Orange UC Irvine, along Adobe Circle Road, 0.9km ENE campus center; 2.3km W French Hill, Irvine 30 Comment
  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
  RSA699854  Sherardia arvensis L. C. Hull 1934-4-3 s.n. Orange Yard in S.A. 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
  RSA682910  Sidalcea malviflora Scott D. White, Amanda Duchardt 2003-5-1 9159 Orange Santa Ana Mountain Foothills: Slopes above west side of Trampas Canyon. 107 Comment
  UCR191009  Sidalcea malviflora A. C. Sanders, Fred M. Roberts 2008-4-22 35018 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  UCSB47611  Sidalcea malviflora Roberts, Fred 1980-5-3 Orange 0.1km NE Falcon Group Camp, Santa Ana Mtns. 1012 Comment
  RSA433910  Sidalcea malviflora subsp. sparsifolia M. B. Dunkle 1935-3-3 4343 Orange San Juan Canyon. 457 Comment
  CAS-BOT-BC205739  Sidalcea neomexicana subsp. thurberi Carl B. Wolf 1936-5-25 7822 Orange East of Los Alamitos, at Northwest corner of Hansen Road & Bryant Ave. 15 Comment
  IRVC357  Silene gallica B. Newman 1965-3-14 Orange Dana Point Comment
  UCR76760  Silene laciniata Stu Hemstreet 1992-5-27 1958 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest. Along road (3S04) to Blue Jay Group Campground, off State Hwy 74 (Ortega Hwy), c. 2 mi. (airline) west of El Cariso Campground. 762 Comment
  SD127342  Silene laciniata subsp. major Reid Moran, Gordon Marsh and Jack Reveal 1977-6-13 24233 Orange Willow Canyon, tributary of Laguna Canyon 124 Comment
  IRVC7928  Silene multinervia A. S. Boughey 1968-4-23 208 Orange Black Star Canyon, .5mi below Hidden Ranch; area burned this winter. Santa Ana Mountains Comment
  IRVC908  Silybum marianum L. Stilgenbauer 1965-4-27 Orange Corona del Mar], Big Corona Beach. Newport Beach Comment
  RSA4794  Sinapis arvensis James Snow s.n. Orange Bryant Ranch, near Long Beach, Calif. South East 1/4 Section 27, Township 4 S, Range 11 W Station #3. Plant. 2. Comment
  CAS-BOT-BC75037  Sisymbrium altissimum John Thomas Howell 1927-6-6 2448 Orange Santa Ana River bottom, Santa Ana Canyon. 152 Comment
  RSA0029937  Sisymbrium altissimum Fred M. Roberts 2013-5-15 7773 Orange San Joaquin Hills: Buck Gully, north slope, along south side of San Joaquin Hills Drive, 1.6 km NNW summit Pelican Hill. 174 Comment
  IRVC1181  Sisymbrium irio B. Mawdsley 1965-4-5 Orange between Laguna Beach and San Clemente. Pacific Coast Hwy Comment
  IRVC1183  Sisymbrium irio L. McCabe 1965-4-25 Orange Corona del Mar. Newport Beach Comment
  CAS-BOT-BC75235  Sisymbrium irio Ira L. Wiggins 1965-10-7 20363 Orange Vacant lot between State College Boulevard and Troy High School campus, Fullerton. Comment
  RSA696105  Sisymbrium irio Keith E. Hoffmaster 1928-2-19 387 Orange Tustin, Santa Ana. 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
  RSA366973  Sisyrinchium bellum H. L. Bauer 1929-4-20 s.n. Orange Trabuco Canon. Comment
  RSA681017  Sisyrinchium bellum Fred M. Roberts, David E. Bramlet 2003-3-13 5571 Orange Donna ONeill Land Conservancy: Ridge west of Christianitos Canyon, 1.6 km NW Sycamore Gate. 197 Comment
  RSA503163  Sisyrinchium bellum Gary D. Wallace, G. Cromwell 1966-4-16 471 Orange Along coast highway; north of Camp Pendleton. Comment
  RSA759373  Sisyrinchium rosulatum Robt. Allen 2008-4-9 s.n. Orange Irvine, Irvine Valley College, near SW corner of A-400 building. 53 Comment
  IRVC27502  Solanum americanum Mark A. Elvin 2004-5-2 3415 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA603306  Solanum americanum Scott D. White, B. Leatherman 1997-6-12 5309 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
  RSA800665  Solanum americanum Justin M. Wood 2010-9-29 2745 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
  HSC21301  Solanum douglasii S. M. Clapp 1966-4-7 22 Orange 3 mi. from Modjeska Canyon towards Silverado Canyon 152 Comment
  SD143700  Solanum douglasii Scott D. White 1997-3-28 4828 Orange Above Modjeska Canyon: proposed water tank site 427 Comment
  UC1125193  Solanum douglasii A. Lewis Mar 1934 337 Orange Santa Ana Canyon 121 Comment
  UC1292575  Solanum douglasii C. L. Hitchcock, C. V. Muhlick 1964-3-17 23063 Orange 8 mi e of Yorba Linda (Santa Ana Canyon); Santa Ana Canyon Comment
  UCR173402  Solanum douglasii Abby Sirulnik 2000-4-11 61 Orange South Coast, Crystal Cove State Park, near Los Trancos Canyon and Pelican Hill 152 Comment
  UCR97817  Solanum douglasii Scott D. White 1997-3-28 4828 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  RSA0045320  Solanum douglasii G. Jentges 1932-4-30 68 Orange Wash near railroad track. Comment
  UCSB48090  Solanum douglasii Roberts, Fred 1981-5-2 Orange Mission Viejo: Camino Capistrano, 1.7km N Crown Valley Parkway 49 Comment
  RSA17565  Solanum umbelliferum Carl B. Wolf 1936-6-17 7953 Orange Long Ortega Highway San Juan Canyon, 5/10 mi. e. of Orange Co. Line Riverside 366 Comment
Read comments
Aug 9 2014
  RSA554628  Solanum umbelliferum Scott D. White 1992-10-13 959 Orange Vicinity of city of Brea, immediately N of Carbon Canyon Road and East of Placentia Avenue. +- 1 mile (airline) S/SE of Tonner Canyon. 183 Comment
  RSA564475  Solanum umbelliferum B. Pitzer 1992-5-21 1943 Orange Cleveland National Forest. Sate Hwy 74, 1 mi. uphill from the 2000 ft. marker, and to the left ca. 1 mi. on an old paved rd. 640 Comment
  RSA0020579  Solanum umbelliferum P. Shirokawa 1998-5-15 41 Orange Cleveland National Forest- Trabuco Ranger District, 2.3 miles from Ortega Highway (State Highway 74) on North Main Divide Road 960 Comment
  RSA0045318  Solanum xanti Pomeroy 1929-2-10 72 Orange Silverado Canyon. PR8. Comment
  POM18090  Solidago californica P. A. Munz 1923-9-7 7747 Orange Santiago Peak, Santa Ana Mountains. 1646 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
  UCR210358  Solidago occidentalis T. B. Salvato, Billy Deane 2006-10-16 1931 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  RSA737537  Sonchus oleraceus Fred M. Roberts 2008-3-12 6725 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  UCR223419  Sonchus oleraceus Dick Newell, Don Millar 2011-3-1 065 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  RSA696190  Sonchus oleraceus Keith E. Hoffmaster 1928-3-9 s.n. Orange Santa Ana Comment
  UCD136210  Sonchus oleraceus Ira L. Wiggins 1966-3-5 20514 Orange 1/2 mile W of El Toro P.O. along Highway S-18. Comment
  UCSB48122  Sorghum bicolor Roberts, Fred 1981-4-11 Orange Highway 74: 5.2 km E San Juan Capistrano, near San Juan Creek crossing 52 Comment
  CAS-BOT-BC235344  Sorghum halepense Ira L. Wiggins 1965-9-26 20257 Orange About 1.5 mi. above mouth of Carbon Canyon Comment
  SEINET182547 Image available Sorghum halepense L. M. Booth 1932-1 1265 Orange Edge of field, Cota Mesa. Orange county. Comment
Read comments
Nov 1 2018
  UCD92658  Sorghum halepense Beecher Crampton 1965-10-27 7582 Orange 2 miles E of Irvine, Irvine Blvd. Comment
  CAS-BOT-BC235380  Spartina foliosa Joseph Andorfer Ewan 1932-7-28 7709 Orange East end of Newport Bay Comment
  RSA483172  Spartina foliosa F. R. Fosberg 1930-7-10 S 3193 Orange Anaheim Landing. [Los Angeles Co. on label] Comment
  RSA748820  Spartium junceum G. Gust, L. Nye 2005-3-12 565 Orange Cleveland National Forest, on Hwy 74 ca. 0.5 m W of county boundary with Riverside at a pullout. 400 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
  RSA627744  Spergula arvensis Scott D. White, Brian Leatherman 1998-1-26 6065 Orange Irvine, Univ. of Calif. Irvine Campus: Site of proposed Research Park. SW of main campus circle, ca. halfway between Berkeley Av. and new freeway (Bonita Cyn.) 37 Comment
  CAS-BOT-BC389926  Spergula arvensis Ira L. Wiggins 1966-3-5 20515 Orange Field about 1/2 mi. W. of El Toro Post Office, along Highway S-18 Comment
  CAS-BOT-BC390309  Spergularia macrotheca var. macrotheca Scott D. White 1997-3-26 4821 Orange Univ. of Calif. Irvine Campus: Site of proposed student recreation center, east of main campus. Existing Farm School and adjacent grasslands (horse pasture) between California Ave. and Culver Dr. 30 Comment
  CLARK-A1045-1002  Spergularia marina George K. Helmkamp 1978-3-3 Orange Newport Beach beside Newport Backbay; Newport Beach 7.5'Q Comment
  RSA0098511  Spergularia marina R. F. Thorne 1984-1 s.n. Orange San Joaquin Marsh, Newport Back Bay. Comment
  RSA0098540  Spergularia marina James Henrickson 1970-7-25 5089 Orange 3.5 miles NW of Huntington Beach growing along graded inner slope of East Garden Grove-Wintersburg Flood Control Channel near Bolsa Chica Salt Marsh. 0 Comment
  RSA47078  Spergularia rubra Albert J. Perkins 1926-4-27 14728 Orange SAnta Ana, Mr. Perknis yard Comment
  UCR102029  Spergularia villosa B. G. Pitzer 1997-3-25 3010 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  RSA74867  Spergularia villosa Elroy Robinson 1936-6-26 s.n. Orange El Torro, dry hard soil along Santa Fe Railway Comment
  UCR186146  Sphaeralcea emoryi var. emoryi Robert DeRuff 1994-4-24 452 Orange Southern Coast, Newport Beach, Newport Back Bay, at top and bottom of a draw between 23rd St. and the Delhi Channel 5 Comment
  IRVC26736  Spiloxene scullyi Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3174 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA68  Sporobolus airoides J. T. Howell 1927-6-21 181 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA788911  Sporobolus indicus Fred M. Roberts 2008-9-17 7106 Orange Peninsular Ranges: Santa Ana River Canyon: Yorba Linda Regional Park adjacent to Santa Ana river, South of La Palma Ave. and 1.7 km ENE Imperial Hwy. bridge over river. 87 Comment
  UCR231057  Stachys A. C. Sanders, Kent Beaman 2011-9-27 39913 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail, 3.4 km NNW (340 deg. ) of Santiago Peak 1088 Comment
  CAS-BOT-BC248292  Stachys ajugoides A. C. Sanders; Fred M. Roberts 2008-6-17 35488 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, West Loma Ridge Spur Road c. 1 km east of Sheriff's Training Facility and 1.6 km SW of Irvine Lake, between hwys 241 and 261 357 Comment
  UC421601  Stachys ajugoides var. rigida John Thomas Howell 1927-7-3 2644 Orange Claymine Canyon Santa Ana Mtns Comment
  UCR140794  Stachys rigida Robin G. Marushia 2004-5-4 007 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
  UCR144124  Stachys rigida Scott D. White, Amanda Duchardt 2003-4-10 9001 Orange Santa Ana Mountians Foothills, Ridges and E-facing canyons above Trampas Canyon 152 Comment
  SEINET9332031  Stachys rigida var. quercetorum Unknown 2004-5-4 007 Orange Crystal Cove State Park Comment
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Oct 26 2017
  SEINET9355912  Stachys stebbinsii Unknown 2011-9-27 39902 Orange Orange Co., CA Comment
  RSA0106593  Stebbinsoseris heterocarpa Scott D. White 1998-3-18 6213 Orange UCI Campus: Site of proposed Research Park, Southwest of main campus circle, ca. halfway between Berkley Ave. and new Freeway (Bonita Cyn.). Plains dissected by a series of gullies. 37 Comment
  RSA696565  Stellaria media Marjorie Smith s.n. Orange High School Campus. Comment
  RSA548856  Stenotaphrum secundatum Fred M. Roberts, Wayne Ferren 1987-4-8 3364 Orange Upper Newport Beach Back Bay, west side, North Star Beach, 0.8 km N Coney Island., UTM 3720900m N, 417450m E 0 Comment
  POM122552  Stephanomeria diegensis Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA684404  Stephanomeria diegensis Scott D. White, Matt Carlton 2003-11-20 9878 Orange Santa Ana Mountain foothills: San Juan Creek in San Juan Capistrano. 37 Comment
  UCR186593  Stephanomeria diegensis Robert DeRuff 1994-1 462 Orange Southern Coast, Newport Beach, Upper Newport Back Bay, Newporter Canyon 8 Comment
  UCR195673  Stephanomeria diegensis A. C. Sanders, Fred M. Roberts 2008-8-7 35995 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  CAS-BOT-BC375866  Stephanomeria virgata Joseph Andorfer Ewan 1932-7-28 7706 Orange Seaward bluffs at Corona del Mar Comment
  UCR191455  Stipa lepida A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34635 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
  RSA0045359  Stipa lepida Keith E. Hoffmaster 1935-4-14 126 Orange Live Oak can., Santa Ana Mts. Comment
  IRVC24746  Stylocline gnaphalioides Fred M. Roberts 1986-4-29 2820 Orange Turtle Rock, above corner of Ridgerout Dr. and Turtle Rock Dr., 1.1km SE French Hill, Irvine 141 Comment
  RSA683168  Stylocline gnaphaloides Scott D. White, Amanda Duchardt 2003-4-10 9019 Orange Santa Ana Mountain Foothills: Ridges & east-facing canyons above Trampas Canyon. 122 Comment
  UCR281545  Stylocline gnaphaloides Mitch Provance, Jeremiah George 2017-3-20 317- 116 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
  UCR5131  Stylocline gnaphaloides Barbara T. Gittins, O. F. Clarke 1966-3-19 891 Orange Pacific slope, Irvine Ranch, east of University of California Irvine campus, Newport Beach 91 Comment
  JEPS32500  Styrax officinalis var. redivivus Frank W. Peirson 1923-5-5 3493 Orange n side Trabuco Canyon; Santa Ana Mts., n side of Trabuco Canyon 640 Comment
  CAS-BOT-BC48096  Styrax redivivus C. B. Wolf; B. D. Stark 1932-12-19 10014 Orange Main divide of Santa Ana Mts., between Sierra Peak & Skyline Drive. 914 Comment
  RSA221085  Styrax redivivus E. W. Lathrop 1966-4-18 6185 Orange 4 mi NE of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA263773  Styrax redivivus Robert Harvey H- 85 -66 Orange Tan Mine Canyon. Comment
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Oct 15 2013
  SD122676  Styrax redivivus Reid Moran 1979-5-9 27196 Orange north slope San Juan Canyon, Santa Ana Mountains 380 Comment
  SBBG128111  Styrax redivivus R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49598 Orange tributary to San Juan Cyn, along Ortega Hwy (74) ca. 2 mi above San Juan Fire Station; Santa Ana Mtns Comment
  POM122884  Suaeda calceoliformis Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  IRVC23985  Suaeda calceoliformis R. De Ruff 1988-6-5 Orange Newport Backbay, road just east of Shellmaker Island, Newport Beach 0 Comment
  POM259534  Suaeda calceoliformis A. C. Keller 1938-7-29 s.n. Orange At entrance to Lido Isle, Newport Comment
  RSA5854  Suaeda calceoliformis C. B. Wolf 1932-6-28 3789 Orange Bryant Ranch, near fence., 100 ft. south of NW corner of NW 1/4 of S.E. 1/4 of sect 27. 9 Comment
  CAS-BOT-BC110388  Suaeda esteroa Peter H. Raven 1957-9-28 11387 Orange At north limits of Surfside. Comment
  CAS-BOT-BC110389  Suaeda esteroa Peter H. Raven 1957-9-28 11383 Orange At north limits of Surfside. Comment
  RSA758770  Suaeda esteroa Anstruther Davidson 1907-9-1 1782 Orange Newport Comment
  UC536968  Suaeda esteroa Lawrence M. Booth 1932-12-13 1373 Orange Newport Bay Comment
  UCSB36525  Suaeda esteroa Ferren, Wayne; Whitmore, S. 1980-8-27 Orange Newport Backbay, along Backbay Drive; ca. 1.5 km. NE of Rt. 1, Newport Beach Comment
  UC1971448  Suaeda esteroa Louis C. Wheeler 1946-9-28 6385 Orange Newport Bay. Comment
  CAS-BOT-BC110406  Suaeda taxifolia Allan C. Keller 1937-11-26 s.n. Orange Santa Ana River Bridge west of Newport Beach on U.S. Highway Alternate 101. Comment
  POM259503  Suaeda taxifolia A. C. Keller 1938-7-29 s.n. Orange On channel beach, 1/4 mile west of Corona del Mar 1 Comment
  RSA438591  Suaeda taxifolia E. A. Purer 1932-03 15767 Orange Coast Highway at Huntington Beach Comment
  SEINET187091  Suaeda taxifolia Allan C. Keller 1937-11-26 Orange One mile south of Huntington Beach on U.S. Highway Alternate 101. Comment
  UC1007086  Suaeda taxifolia Allan C. Keller 1937-11-26 Orange on U.S. Highway Alternate 101 one mi s Huntington Beach 1 Comment
  RSA789222  Swertia parryi Naomi S. Fraga 2009-5-11 2719 Orange San Juan loop trail, Cleveland National Forest just west of Sugarloaf Spur Trail. 912 Comment
  UCR174213  Symphoricarpos A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33040 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  UCR94530  Symphoricarpos albus var. laevigatus Steve Boyd, T. S. Ross 1994-9-14 8355 Orange Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon just downstream of Lucas Canyon trail crossing. 305 Comment
  RSA0063398  Symphoricarpos mollis Fred M. Roberts 1990-5-8 4620 Orange Chino Hills: Soquel Canyon, c. 1.2 km NNW of Gilman Peak. 240 Comment
  RSA696580  Symphoricarpos mollis Olive Van Meter s.n. Orange