Search Results — 2000 specimen records retrieved (1636 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  POM739  Abronia maritima D. L. Crawford 1916-7-28 s.n. Orange Abalone Point Comment
  SD41424  Abronia maritima Edith A. Purer 1932-8-31 4880 Orange Sand dunes along Route 101. Comment
  CAS-BOT-BC229408  Abronia umbellata Peter H. Raven 1957-9-28 11374 Orange North limits of Surfside Comment
  CAS-BOT-BC229409  Abronia umbellata Marcus E. Jones 1924-8-26 s.n. Orange Newport Comment
  SBBG69894  Abronia umbellata M. N. Ackley 1928-9-22 716 Orange Sunset Beach 8 Comment
  UCR207193  Abronia umbellata O. F. Clarke 2002-5-22 s.n. Orange South Coast, Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach 4 Comment
  RSA651421  Acacia dealbata Doug Bell 1949-2-2 s.n. Orange Orange. 198 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
  SEINET946801  Acacia longifolia R. J. Barr 1964-1 64 -589 Orange Roadside near Capistrano Beach Comment
  UCR24737  Acacia podalyriifolia Sue Freeman 1966-11-4 s.n. Orange Across Hwy 1 from San Clemente Beach at the foot of a grassy shrubby cliff Comment
  UCR239623  Acacia redolens Fred M. Roberts 2012-4-24 7497 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  CDA3995  Acacia retinodes D. G. Kelch 2006-12-9 6 .554 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  SEINET5642646  Acacia saligna Shelby J. Wood 2013-3-6 7 Orange Laguna Hills.; 0 Comment
  RSA337340  Acalypha californica Steve Boyd, L. LaPre 1981-5-27 s.n. Orange N end of the Santa Ana Mountains along power line road on ridges E of Weir Canyon and the head of Gypsum Canyon. Comment
  CAS-BOT-BC333255  Acer macrophyllum John Thomas Howell 1927-7-26 2839 Orange SE fork of Claymine Canon, N. Santa Ana Mts. 304 Comment
  RSA514320  Acer macrophyllum Reid V. Moran, Daniel I. Axelrod, Bob Smart 1975-7-18 22595 Orange Along stream near Yeager Mine, upper Trabuco Canyon. 725 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
  RSA539341  Achnatherum coronatum Fred M. Roberts, Karlin G. Marsh 1989-3-7 4193 Orange Lomas de Santiago: Loma Ridge, Hicks Canyon, 2.3km W Bee Survey Mark., UTM 37 32 200mN, 4 32 900mE 165 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
  UCR267188  Acmispon glaber var. glaber Fred M. Roberts 2010-3-12 7180 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
  UCR230828  Acourtia microcephala Dick Newell, Don Millar 2011-6-14 173 Orange South Coast, San Joaquin Hills, Serrano Ridge on west side of Laguna Canyon 260 Comment
  IRVC25000  Acroptilon repens Fred M. Roberts, Helen Camp & Bill Bretz 1986-6-20 3025 Orange San Joaquin Freshwater Marsh, near Campus Dr., 1.7km NNW UC Irvine campus center, Irvine 2 Comment
  LA31221  Adenostoma fasciculatum David S. Verity; 1960-2-14 sn Orange one small area on ridge near summit of Temple Hills Dr. on E. slope of ridge, San Juaquin Hills behind Laguna Beach Comment
  RSA16343  Adenostoma fasciculatum Percy C. Everett 1935-6-18 7190 Orange Santa Ana Mountains. Main divide motorway to Santiago Peak, 1 mile from Ortega Highway. 732 Comment
  RSA3142  Adenostoma fasciculatum var. obtusifolium Carl B. Wolf 1931-7-7 2276 Orange Procotr Valley, 4 miles above the Upper Otay reservoir on the road to Jamul (east of Mt. San Miguel). 244 Comment
Read comments
Jun 8 2016
  IRVC3116  Adiantum capillus-veneris C. Thompson 1965-5-10 HS 0576 Orange Corona Del Mar. Southern Coastal Comment
  RSA0042819  Adiantum capillus-veneris R. E. Riefner Jr. 2012-2-23 12 -43 Orange city of Laguna Beach, Treasure Island Beach, vicinity of Wesley Drive and South Coast Hwy 1 Comment
  RSA1498  Adiantum jordanii J. T. Howell 1929-2-6 1220 Orange Claymine Canyon, Santa Ana Mountains 213 Comment
  RSA728669  Agave attenuata R. E. Riefner 2007-2-18 07 -67 Orange City of Rancho Santa Margarita, Tijeras Canyon, N ca. 0.5 mi from Meandering Trails Rd. on Antonio Pwky. 221 Comment
Read comments
Feb 28 2016
  NY7051  Agoseris cinerea L. Abrams 1901-6-15 1816 Orange Santiago Peak trail. 914.4 Comment
  RSA697070  Agoseris grandiflora var. grandiflora Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts Comment
  RSA696196  Agoseris retrorsa Keith E. Hoffmaster 1936-5-3 s.n. Orange Santa Ana Mts (Santiago Peak) Comment
  UCR150907  Agoseris retrorsa Valerie Soza, LeRoy Gross 1999-6-10 513 Orange Santa Ana Mountains, Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road 1524 Comment
  SEINET3916500  Agrostis pallens A. C. Sanders, Fred M. Roberts 2008-7-16 35851 Orange Penninsular Range; Santa Ana Mtns.: Lomas de Santiago, Limestone Canyon.; 0 325 Comment
  UCR192990  Agrostis pallens A. C. Sanders, Fred M. Roberts 2008-6-17 35490 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
  UCR193834  Agrostis pallens A. C. Sanders, Fred M. Roberts 2008-7-16 35851 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon 325 Comment
  UCR193762  Agrostis viridis A. C. Sanders, Fred M. Roberts 2008-7-3 35703 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
  UCR149361  Albizia lophantha Scott D. White, Brian Leatherman 2003-10-30 9849 Orange Peninsular Ranges; Santa Ana Mountains region, Foothills; Oso Parkway crossing over Chiquita Canyon 229 Comment
  UCR132990  Allium haematochiton Adrian Wolf 2000-5-4 466 Orange Santa Ana Mtns., North Ranch Policy Plan Area, ridgeline between upper Gypsum and Fremont Canyon, Main Divide Road, overlooking upper Fremont Cyn. 726 Comment
  RSA79414  Allium haematochiton E. K. Balls 1952-5-22 17248 Orange 2 mi. S. of Sierra Peak 610 Comment
  RSA0063248  Allium marvinii Gordon Marsh, Karlin G. Marsh 1978-5-13 s.n. Orange Santa Ana Mountains: Coal Canyon; Ridge along Main Divide Road, S portion of acreage. 732 Comment
  RSA637489  Allium monticola Valerie L. Soza, LeRoy Gross 1999-6-10 509 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off Main Divide Road. 1524 Comment
  UCR150911  Allium monticola Valerie Soza, LeRoy Gross 1999-6-10 509 Orange Santa Ana Mountains, Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road 1524 Comment
  RSA562756  Allium praecox Steve Boyd, Timothy S. Ross 1992-5-19 7432 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucan Canyon Trail in Lucas Canyon, just upstream from divide with Aliso Canyon. 366 Comment
  RSA548870  Allium praecox Fred M. Roberts 1987-4-3 3342 Orange Irvine: San Joaquin Hills, Central Shadey Canyon, 2.8 kilometers NE Signal Hill. 103 Comment
  RSA759268  Allium praecox Robt. Allen, Reginald Durant, David Taylor 2008-4-11 s.n. Orange 1.6 road mi EENE above Maple Springs Forest Gate, between Lost Woman Canyon and Spruce Canyon. 740 Comment
  RSA7475  Allophyllum glutinosum C. B. Wolf 1933-8-24 5399 Orange Summit of Santiago Peak, Santa Ana Mountains 1731 Comment
  SEINET2444446  Allophyllum glutinosum Steve Boyd, Tim Ross 1992-5-20 7452 Orange Southern Santa Ana Mountains. San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon along a new section of trail heading up major side canyon northward to Sitton Peak Road (7S09). 305 Comment
  RSA184109  Alnus rhombifolia I. L. Wiggins 1966-1 20411 Orange along immediate margin of stream above ranger station, Trabuco Canyon Comment
  UC1543134  Alnus rhombifolia Donald G. Nelson 1938-12-26 Orange in creek bottom near Myers Ranch; Santa Ana Mountains, Black Star Canyon, Black Star Creek Comment
  UCR140882  Amaranthus albus Robert DeRuff 1987-8-22 299 Orange Southern Coast, Newport Back Bay, Santa Ana Heights area 18 Comment
  RSA184077  Amaranthus albus I. L. Wiggins 1966-5-4 20658 Orange Along railroad embankment of A.T. & S.F. R.R., on SW side of Orangethorpe avenue, near Esperanza siding. Comment
  RSA562746  Amaranthus albus Steve Boyd, Timothy S. Ross 1992-5-19 7442 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
  SD245232  Amaranthus albus R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49593 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Margins of San Juan Creek. Comment
  RSA725459  Amaranthus blitoides Fred M. Roberts 2007-8-6 6558 Orange San Joaquin Hills: Laguna Beach, Laguna Cyn. on east side of Laguna Cyn. Rd. adj. to dog park, 1.2 km S (air) from El Toro Road and 1.8 km WSW Moulton Survey Mk. 52 Comment
  UC537268  Amaranthus blitoides Lawrence M. Booth 1932-7-25 1309 Orange Santa Ana River, 0.5 mi from ocean Santa Ana River Comment
  IRVC24277  Amaranthus blitoides Fred M. Roberts, G. A. Marsh 1985-10-26 2522 Orange Santa Ana River: adjacent to Huntington Beach; 0.7km SSW Adams Street bridge. southern coastal 4 Comment
  RSA542440  Amaranthus blitoides Fred M. Roberts 1988-10-21 4162 Orange Irvine: Alton Parkway at corner of Jeffrey Rd., 1.5km NNE French Survey Mark. 35 Comment
  RSA573430  Amaranthus blitoides Steve Boyd, Timothy S. Ross 1994-9-14 8345 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
  RSA724062  Amaranthus blitum subsp. emarginatus R. E. Riefner 2004-8-8 4 -370 Orange City of Anaheim, Santa River bottom near 57-Freeway between Orangewood St. and Chapman Ave. 41 Comment
  UCD97455  Amaranthus deflexus A. C. Sanders 1999-10-31 23225 Orange South Coast: Mission San Juan Capistrano, near intersection of Ortega Highway (Hwy 74) and El Camino Real. Near confluence of San Juan Creek and Arroyo Trabuco. 61 Comment
  POM201880  Amaranthus hybridus L. M. Booth 1932-7-25 s.n. Orange Santa Ana River, 1 1/2 miles from ocean. Comment
  UCSB48239  Amaranthus powellii Roberts, Fred 1981-7-8 Orange Rancho Mission Viejo; Calif. Rte. 74, 10.5 km. by road, ENE San Juan Capistrano 104 Comment
  RSA404566  Amaranthus retroflexus Albert J. Perkins 1912-10-15 s.n. Orange Peatlands near head Newport Bay. Comment
  UCR188935  Amaryllis belladonna Robert DeRuff 2004-8-13 551 Orange Newport Beach, Upper Newport Bay, vicinity of Castaways Park just north of Pacific Coast Hwy 5 Comment
  RSA610217  Amblyopappus pusillus Fred M. Roberts, Julie Vanderwier 1997-4-29 5014 Orange Bolsa Chica Salt Marsh; (US Fish & Wildlife Service cell 60) west of old oil field, 1.1 km. S Chica Survey Mark. 0 Comment
  RSA695490  Amblyopappus pusillus J. Vlahos s.n. Orange Corona Del Mar Comment
  UCSB48044  Ambrosia acanthicarpa Roberts, Fred 1981-9-26 Orange Anaheim Bay; Calif. Rte. 1 at southern margin of Naval Weapons Station, 1.7 km. SE McGaugh School; 1.1 km. W Hog Island 1 Comment
  CLARK-A1528-925  Ambrosia chamissonis Patricia A. Andrews 1975-6-26 5922 Orange Capistrano Bay Beach 9 Comment
  UCR42386  Ambrosia chamissonis A. C. Sanders 1986-5-31 6524 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
  CAS-BOT-BC13768  Ambrosia chamissonis David D. Keck 1933-9-8 2522 Orange Sunset Beach Comment
  POM289599  Ambrosia chamissonis Arthur L. Cohen 513 Orange Ocean parts. Sand lots near beach. 0 Comment
  RSA0042768  Ambrosia psilostachya Fred M. Roberts 2012-7-18 7679 Orange San Joaquin Hills: Newport Beach, Buck Gully, Buck Gully Trail, west end, just east of north terminus of Poppy Street and 2.1 km WNW summit of Pelican Hill. 37 Comment
  RSA33797  Ambrosia psilostachya N. C. Cooper 1942-11-9 882 Orange Balboa. Comment
  RSA0031761  Ambrosia psilostachya R. F. Thorne 1977-11-21 50813 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  RSA783652  Ambrosia psilostachya J. D. Olmsted 1959-8-26 835 Orange Along road south of mouth of Black Star Canyon north of Rock Crushing Plant; Drainage area: to Santiago Reservoir. 305 Comment
  RSA753029  Ammannia coccinea A. C. Sanders, Fred M. Roberts 2008-9-18 36095 Orange Lomas de Santiago, Santiago Creek Canyon c. 0.5-0.8 miles above the highway bridge 300 Comment
  RSA800133  Ammannia coccinea Justin M. Wood 2010-9-29 2746 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
  UC454543  Ammannia robusta I. J. Condit 1908-7-21 Orange Los Alamitos Comment
  IRVC8871  Ammi majus Charles W. Sexton 1963-7-15 s.n. Orange Costa Mesa. Southern Coastal Comment
  RSA697897  Amorpha fruticosa Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts. PR8. Comment
  CAS-BOT-BC213966  Amsinckia Helen D. Geis 1902-1-1 510 Orange Santa Ana Comment
  UCSB15050  Amsinckia intermedia Breedlove, Dennis 1962-3-9 Orange 6.4 miles east of San Juan Capistrano on State 74 121 Comment
  RSA0127613  Amsinckia menziesii Fred M. Roberts 2016-4-26 8044 Orange Lomas de Santiago: South of Santiago Canyon Road in tributary to Lower Presida Canyon just southwest of Irvine Lake, 2.2 km S Irvine Lake dam spillway and 0.6 km SW Irvine Lake Park. 265 Comment
  RSA708285  Anagallis arvensis Scott D. White, Jennifer H. Jones 2005-3-31 10858 Orange South Coast: City of Laguna Beach. 549 Nyes Place. Proposed home site on ca. 0.5 acre. 91 Comment
  SBBG47539  Anagallis arvensis M. B. Dunkle 1933-4-9 3273 Orange Dana Point Comment
  UCR239627  Anagallis arvensis Fred M. Roberts 2012-4-24 7516 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  POM201883  Anemopsis californica L. M. Booth 1932-6-4 1142 Orange Newport Lagoon. Comment
  JEPS13328  Anthemis cotula L. M. Booth 1932-5-15 1200 Orange Coastal Santa Ana Basin Comment
  UCR186365  Anthriscus caucalis Robert DeRuff 1995-4-30 483 Orange Southern Coast, Newport Beach, Newport Back Bay, at and above intersection of San Joaquin Hills Rd. and Backbay Dr. 2 Comment
  POM354855  Antirrhinum coulterianum M. B. Dunkle 1934-6-18 3995 Orange San Juan Canyon; Southern Coastal 305 Comment
  RSA17218  Antirrhinum coulterianum Carl B. Wolf 1936-6-22 s.n. Orange Santa Ana Mtns, 3 miles above FS gate IN Santiago Canyon, along truck trail to Modjeska Peak. 762 Comment
  RSA734596  Antirrhinum coulterianum A. C. Sanders, Fred M. Roberts 2008-5-6 35225 Orange Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin. 216 Comment
  UCR190998  Antirrhinum coulterianum A. C. Sanders, Fred M. Roberts 2008-4-22 35050 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
  UCR191341  Antirrhinum kelloggii A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34618 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
  RSA701675  Antirrhinum nuttallianum L. C. Hull 1939-9-8 s.n. Orange Laguna Hills Comment
  RSA734655  Antirrhinum nuttallianum A. C. Sanders, Fred M. Roberts, A. O'Neal, D. E. Bramlet 2008-5-9 35315 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir. 346 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
  UC672564  Antirrhinum nuttallianum subsp. subsessile H. L. Mason 1926-4-25 2907 Orange 5 mi s Laguna Comment
  UCR162200  Antirrhinum nuttallianum subsp. subsessile Robert DeRuff 1983-1 275 Orange Southern Coast, Newport Beach, Upper Newport Back Bay, Castaway's Bluffs 24 Comment
  IRVC20471  Apiastrum angustifolium Fred M. Roberts 1983-5-4 1023 Orange Temple Hill, Upper Rancho Laguna Canyon, 1.7km SSW Top of the World Sch.; 1.4km ENE Cactus Point, Laguna Beach 200 Comment
  RSA542442  Apiastrum angustifolium Fred M. Roberts 1988-4-10 3920 Orange Lomas De Santiago: Loma Ridge, 1.0 kilometer N Bolero Lookout. 415 Comment
  UCSB52904  Apiastrum angustifolium Roberts, Fred 1983-5-4 Orange Laguna Beach; upper Rancho Laguna Canyon, 1.7 km. SSW Top of the World School; 1.4 km. ENE Cactus Point 200 Comment
  UCR138386  Apium graveolens Scott D. White, Brian Leatherman 1997-6-12 5314 Orange Santa Ana Mtn. foothills, E of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e. c. 2-4 mi east of Hwy I-15/Hwy 74 junction 76 Comment
  UCR192992  Apium graveolens A. C. Sanders, Fred M. Roberts 2008-6-17 35469 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  CHSC102  Apocynum androsaemifolium Sonia R. Westerberg 1938-4-1 Orange San Juan Canyon. Comment
  CAS-BOT-BC171630  Aralia californica James R. Shevock 1976-10-28 5358 Orange Along Silverado Canyon Road int he vicinity of Bigcone Spring, Santa Ana Mts., Cleveland National Forest 914 Comment
  SD254523  Araujia sericifera Eric Focht 2016-7-8 1 Orange South Coast: University of California Research and Extension Center, 7601 Irvine Blvd., Irvine Field 6 (El Toro 7.5'Q) 13 Comment
  UCR130342  Araujia sericifera A. C. Sanders, Mark A. Elvin 2003-10-12 27319 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 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
  CAS-BOT-BC128676  Arbutus menziesii Carl B. Wolf 1933-11-8 2008 Orange Trabuco Canyon on south wall opposite the Trabuco Truck Trail, Santa Ana Mts. 914 Comment
  HSC25234  Arctostaphylos glandulosa Richard Spjut 1972-2-22 2230 Orange Santa Ana Mtns. along Hwy. 74. Cleveland Natl. Forest 762 Comment
  IRVC1252  Arctostaphylos glandulosa subsp. glandulosa A. S. Boughey 1965-3-16 69 Orange Silverado Canyon. Santa Ana Mountains Comment
  POM367271  Arctostaphylos glandulosa subsp. glandulosa Christopher Davidson 1977-5-18 5602 Orange Santa Ana Mts. Cleveland Nat. Forest. Pleasants Peak (on Orange-Riverside Co. line). 1220 Comment
  RSA626921  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15506 Orange Hotshot Camp, north of Ortega Highway (Highway 74). 900 Comment
  RSA629324  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15502 Orange Road to Blue Jay Campground, 1 km south of Hotshot Camp, north of Ortega Hwy. (Hwy. 74). 800 Comment
  UC1137200  Arctostaphylos glandulosa subsp. zacaensis Willis E. Pequegnat 1940-4-13 Orange Modjeska Springs Cleveland National Forest, Corona Quadrangle, Santa Ana Mts. 457 Comment
  SEINET10684212  Arctostaphylos glandulosa var. glandulosa Karen M. Meyer, Andrew Townesmith; Tracy Scott 2007-3-10 Meyer 2 Orange Cleveland National Forest, 0.5 mi. N. Main Divide Rd./NF3S04, off Hwy. 74. Elsinore Mountains, ridge top. 917 Comment
  UCR145984  Arctostaphylos glauca June Latting 1977-1-12 s.n. Orange Chino Hills, Tonner Canyon 213 Comment
  RSA544  Arctostaphylos glauca var. glauca J. T. Howell 1927-6-26 223 Orange Claymine Canyon, near Sierra Peak. 457 Comment
  NY387541  Argemone munita subsp. robusta C. B. Wolf 1933-8-24 Prop. No. 1915 Orange Upper Sonoran and arid transition areas. Santa Ana Mts. Summit of Santiago Pk. 1731.3 Comment
  SEINET4002143  Argemone munita var. robusta G. B. Ownbey, F. Ownbey 1954-1 2168 Orange Between Modjesca Peak and Santiago Peak. 1524 Comment
  RSA719415  Argyranthemum foeniculaceum Fred M. Roberts, Lee Ann Caranza 2006-10-25 6451 Orange Dana Point Headlands south of Margarite Drive, 0.6km W Marine Institute and 1km SW Cook Sch. 58 Comment
  RSA542562  Aristida purpurea var. parishii Fred M. Roberts 1988-2-18 3796 Orange Lomas de Santiago: lateral to Santiago Wash, 1.4 kilometers NW Santiago Dam spillway., UTM 37 39 400m N, 4 31 700m E. 195 Comment
  UCD56385  Aristida ternipes var. gentilis D. E. Bramlet; Fred Roberts 2003-3-13 3336 Orange Donna O'Neill Reserve, north east ridgeline 762 m west of Cristianitos Rd., and 1.15 km north of the E-W Access Road. 198 Comment
  CAS-BOT-BC133201  Artemisia californica T. B. Salvato 2010-9-27 5124 Orange South Coast: Dana Point Headlands, Harbor Point Park, south of Scenic Dr. and Cove Rd., beyond the end of Green Lantern St., overlooking Dana Point Harbor 70 Comment
  CAS-BOT-BC133228  Artemisia californica T. B. Salvato 2010-10-27 5137 Orange South Coast: Dana Point Headlands, Hilltop Park, north of Scenic Dr. and west of Green Lantern St., overlooking Dana Point Harbor 84 Comment
  IRVC16742  Artemisia californica Gordon A. Marsh, A. B. McGee 1981-5-22 Orange UCI Ecological Preserve, hill 4. Irvine Comment
  SD187333  Artemisia californica R. E. Riefner Jr. 2006-8-25 06 410 Orange City of Dana Point, Salt Creek Beach Park, vicinity of Dana Strand Rd. and Selva Rd. 2 Comment
  UCSB68454  Artemisia californica Hook, Elizabeth; Tran, Caroline 2006-2-4 Orange Southern Coastal: San Joaquin Marsh; NW bluff edge (Tustin 7.5': 11s -420502E, 3724694N) Comment
  IRVC25177  Artemisia douglasiana Fred M. Roberts, Brenda Fugle 1986-10-1 3156 Orange Laguna Hills; creek channel along Cabot Rd. ca. 1.0km N Pacific Park Pkwy. Southern Coastal 99 Comment
  UCR103707  Artemisia douglasiana B. G. Pitzer, T. Tennant 1997-11-8 3362 Orange San Joaquin Hills, Crystal Cove State Park, along Moro Canyon Trail, from beginning to a point c. 1.75 mi. up the canyon. 85 Comment
  UCR231349  Artemisia douglasiana A. C. Sanders, Kent Beaman 2011-9-27 39900 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail above Silverado, at major (dry) stream crossing, 3.95 km NNW (347 deg. ) of Santiago Peak 903 Comment
  POM6088  Artemisia dracunculus Daniel J. Crawford 1916-8-3 s.n. Orange Arch Beach. Laguna Beach Region. Comment
  SD72851  Artemisia dracunculus F. R. Fosberg 1931-6-21 S 5089 Orange Lower Santiago Canyon Comment
  UC971735  Artemisia dracunculus L. M. Booth 1932-7-4 1242 Orange Newport Bay Comment
  RSA703138  Artemisia tridentata subsp. tridentata Fred M. Roberts, Arthur Davenport 2003-9-11 6017 Orange Rancho Mission Viego: Donna O'Neill Land Conservancy, Cristianitos Cyn., 85m SSW Sycamore Gate, 35m W of Cristianitos Road. 119 Comment
  RSA784180  Artemisia vulgaris J. D. Olmsted 1959-8-26 836 Orange Drainage area to Santiago Reservoir. Mouth of Black Star Canyon east of Santiago Reservoir. 320 Comment
  RSA788913  Arundo donax Fred M. Roberts 2008-9-17 7099 Orange Peninsular Ranges: Yorba Linda: Santa Ana River Canyon, Santa Ana River, 0.7 km W Gypsum Cyn. Rd. bridge, south of La Palma Ave. 107 Comment
  UCR179772  Asclepias curassavica R. E. Riefner Jr. 2005-10-27 05- 727 Orange South Coast, Huntington Beach, Huntington Central Park near Goldenwest St. 1 Comment
  IRVC25009  Asclepias fascicularis Fred M. Roberts 1986-6-27 3034 Orange Mission Viejo: Creek channel along Cabot Rd. near Oso Pkwy. Comment
  POM201840  Asclepias fascicularis L. M. Booth 1932-7-21 1291 Orange Anaheim Creek Comment
  UCR228754  Asclepias fascicularis Dick Newell, E. D. Hill 2011-6-7 171 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon 341 Comment
  UCR100449  Asparagus asparagoides B. G. Pitzer 1996-4-30 2787 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR150567  Asparagus asparagoides Scott D. White, Matt Carlton 2003-11-20 9873 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 37 Comment
  UCR149413  Asphodelus fistulosus Fred M. Roberts 2000-6-5 5337 Orange Chino Hills, Yorba Linda, along Hidden Hills Dr. near Sunbeam Lane, on ridge above Box Canyon 376 Comment
  POM8680  Aspidotis californica P. A. Munz, R. D. Harwood 1920-4-24 3743 Orange Santa Ana Mountains, Sierra [Freemont] Canyon 366 Comment
  IRVC178  Asplenium bulbiferum Ray Nesheim 1965-5-11 HS0565 Orange Balboa Island. Southern Coastal Comment
  RSA93824  Aster hesperius F. W. Peirson 1924-10-19 5241 Orange Wintersberg Comment
  RSA715694  Aster subulatus var. ligulatus Fred M. Roberts, Chris M. Barnhill 2005-9-27 6275 A Orange San Juan Capistrano: San Juan Creek wash, east of La Novia Road bridge, 1.4km E Mission San Juan Capistrano, 27 Comment
  RSA699979  Astragalus Minor Warne 1934-03 s.n. Orange Gypsum canyon Comment
  CAS-BOT-BC180451  Astragalus brauntonii Carl B. Wolf 1936-6-22 8000 Orange Santa Ana Mts., No. slopes of Sierra pk., Claymine Canyon truck trail to Sierra Pk. 457 Comment
  RSA20375  Astragalus brauntonii Percy C. Everett, E. R. Johnson 1937-11-30 9381 Orange Claymine Canyon to sierra peak Road 609 Comment
  RSA625800  Astragalus gambelianus Scott D. White 1998-4-24 6338 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
  UCD105449  Astragalus trichopodus G. H. Vansell 1935-6-12 s.n. Orange Yerba Linda area. Comment
  JEPS54846  Astragalus trichopodus var. lonchus John Thomas Howell 1927-6-2 2415 Orange Santa Ana Canyon Rancho Santa Ana; , Santa Ana Canyon 152 Comment
  UC284237  Astragalus trichopodus var. lonchus P. A. Munz 1923-9-7 7770 Orange mouth of Trabuco Canyon mouth of Trabuco Canyon (base of limestone cliff) 304 Comment
  RSA90711  Astragalus trichopodus var. lonchus F. W. Peirson 1923-9-8 4044 Orange Trabucco Canyon. 427 Comment
  RSA737377  Atriplex amnicola R. E. Riefner 2005-9-9 05 -658 Orange City of Dana Point, beach W of Pacific Coast Hwy and S of Salt Creek near Ritz Carlton Hotel. 8 Comment
Read comments
Jul 22 2018
  UCR203904  Atriplex amnicola R. E. Riefner Jr. 2008-5-25 08- 118 Orange South Coast, San Clemente, vicinity of Camino de Los Mares and Calle Nuevo 45 Comment
  RSA737231  Atriplex amnicola R. E. Riefner 2006-5-7 06 -178 Orange N end of City of San Clemente, along I5, N side, immediately S of Camino De Estrella exit ramp. 66 Comment
  RSA737242  Atriplex amnicola R. E. Riefner 2005-9-16 05 -666 Orange Upper Newport Bay, E of Bayside Dr. at confluence with Big Canyon. 6 Comment
  RSA737243  Atriplex amnicola R. E. Riefner 2006-4-17 06 -155 Orange Upper Newport Bay, near Bayview Wy and Bayview Pl. 7 Comment
  RSA743668  Atriplex amnicola R. E. Riefner 2007-8-4 7 -344 Orange City of San Juan Capistrano, San Juan Creek, ca. 0.2 mi W of intersection of Paseo Tirador and Calle Arroyo St. 31 Comment
  SBBG122001  Atriplex amnicola R. E. Riefner 2006-4-17 06 -155 Orange near Bayview Way and Bayview Place, upper Newport Bay 6 Comment
Read comments
Dec 13 2012
  UC1930115  Atriplex amnicola R. E. Riefner Jr. 2008-5-25 08 -118 Orange City of San Clemente, vicinity of Camino de Los Mares and Calle Nuevo. Comment
  UCR158035  Atriplex argentea Adrian Wolf 1998-7-1 405 Orange South Coast, Peters Canyon Channel, east of channel near Harvard Ballfield, between Harvard Ave. & creek, south of Warner Ave. to Barranca 15 Comment
  JEPS59563  Atriplex californica L. M. Booth 1932-5-19 1068 Orange Newport Bay Comment
  RSA678456  Atriplex californica Valerie Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary D. Wallace 2001-4-4 1109 Orange Seal Beach National Wildlife Refuge: Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  RSA737531  Atriplex californica Fred M. Roberts 2008-3-12 6731 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  UCR14056  Atriplex californica Hyrum B. Johnson 1973-10-27 s.n. Orange Pacific Coast, Bolsa Chica State Beach 1 Comment
  UCR266400  Atriplex californica D. E. Bramlet 1991-5-15 3055 Orange South Coast, Dana Point 30 Comment
  RSA610220  Atriplex californica Fred M. Roberts, Julie Vanderwier 1997-4-29 5018 Orange Bolsa Chica Salt Marsh; (US Fish & Wildlife Service cell 17) west of old oil field, 1.17 km. S SE Chica Survey Mark. 0 Comment
  RSA615542  Atriplex californica Robb Hamilton 1989-7-20 s.n. Orange Newport Beach: along Pacific Coast Hwy just west of jct with Newport Blvd. 0 Comment
  RSA234538  Atriplex canescens James Henrickson 1970-7-24 5018 Orange 3 miles NW of Huntington Beach on sandy ''Rabbit'' Island in Bolsa Chica Salt March near Inner Bolsa Bay. 1 Comment
  UCR221462  Atriplex canescens Dick Newell, Don Millar, Steve Shinn 2010-9-28 37 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Haul Road (Jeffrey Rd.) at Hwy 241 toll road 221 Comment
  UCR98213  Atriplex canescens subsp. canescens B. G. Pitzer 1996-4-30 2789 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  CAS-BOT-BC172632  Atriplex coulteri Louis C. Wheeler 1934-1-14 2363 Orange Aliso Creek near Laguna 76 Comment
  CAS-BOT-BC172633  Atriplex coulteri Louis C. Wheeler 1934-1-14 2363 Orange Aliso Creek near Laguna 76 Comment
  UC150079  Atriplex coulteri LeRoy Abrams 1903-4-18 3270 Orange Trabuco Arroyo near Capistrano; Trabuco Arroyo near Capistrano Comment
  SD219022  Atriplex glauca R. E. Riefner Jr. 2002-5-4 20 87 Orange City of Dana Point, beach west of Pacifi Coast Highway near mouth of Salt Creek. 14 Comment
  UCR127689  Atriplex glauca D. E. Bramlet 1994-2-27 2365 Orange South Coast, Roadside, some 120 m east of intersection of Irvine Ave. and University Drive, c. 1 m south of University Drive 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
  UCR203881  Atriplex glauca R. E. Riefner Jr. 2006-3-19 06- 52 Orange South Coast, city of Newport Beach, near Avocado Ave. and San Nicolas Dr., west of MacArthur Blvd. 77 Comment
  IRVC22418  Atriplex glauca Karlin G. Marsh 1985-12-18 Orange along Niguel Rd. at Salt Creek crossing, Laguna Niguel 60 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
  RSA819108  Atriplex lentiformis subsp. breweri R. F. Thorne 1977-11-21 50821 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  UCR24117  Atriplex lentiformis subsp. breweri John C. Roos 1937-8-31 2556 Orange South Coast, San Clemente Comment
  SD181601  Atriplex leucophylla Valerie Soza, K Clark,L Gross,W Miller,F Roberts,G Wallace 2001-4-4 1117 Orange Anaheim Bay, Seal Beach, U.S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge; Seal Beach 7.5' quad. Coastal sand dunes. 3 Comment
  POM641  Atriplex leucophylla D. L. Crawford 1925-07 s.n. Orange Beach Comment
  RSA593870  Atriplex lindleyi R. E. Riefner 1994-6-18 94 -427 Orange San Clemente State Beach Comment
  JEPS48895  Atriplex pacifica Lawrence M. Booth 1932-5-19 1069 Orange Newport Bay Comment
  POM631  Atriplex pacifica I. M. Johnston 1918-5-4 1931 Orange Laguna Beach. Comment
  RSA478340  Atriplex pacifica L. C. Wheeler 1932-6-25 855 Orange Newport Bay. 2 Comment
  RSA247  Atriplex pacifica J. T. Howell 1927-7-17 420 Orange Near Laguna Beach. 30 Comment
  UCR151119  Atriplex polycarpa Scott D. White 1998-10-15 7185 Orange Santa Ana Mtns foothills, Yorba Linda, c. 0.5 mi south of Telegraph Canyon between Ohio St. and Fairmont 305 Comment
  POM201896  Atriplex rosea L. M. Booth 1932-7-4 s.n. Orange Newport Lagoon Comment
  POM47596  Atriplex rosea I. M. Johnston 1924-8-29 s.n. Orange 4 miles S of Santa Ana Comment
  RSA65341  Atriplex rosea F. W. Peirson 1924-8-29 s.n. Orange 4 miles south of Santa Ana. Comment
  HSC34526  Atriplex semibaccata J. D. Ackerman, A. M. Montalvo 1974-3-28 167 Orange S Laguna, by S Laguna Sanitary Station Comment
  JEPS59665  Atriplex semibaccata L. M. Booth 1932-5-12 1002 Orange Newport Bay Comment
  RSA5823  Atriplex semibaccata C. B. Wolf 1932-6-28 3799 Orange 100 ft. east of pump house at East End Camp. 9 Comment
  UCR281506  Atriplex serenana var. serenana Mitch Provance, Jeremiah George 2017-3-20 317- 104 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
  SD178169  Atriplex suberecta Tom Perring, Tracy Pinckard 1994-3-2 Orange South Coast: Tustin, Marine Helicopter Station at the corner of Moffett Drive and Jamboree Rd. Growing along a ditch in an agricultural area. 10 Comment
  UCD97688  Atriplex suberecta Tom Perring; Tracy Pinckard 1994-3-2 s.n. Orange South Coast, Tustin, Marine Helicopter Station at the corner of Moffett Drive and Jamboree Road. 11 Comment
  RSA65393  Atriplex subspicata F. W. Peirson 1924-8-29 s.n. Orange 2.5 miles from Balboa Beach on road inland along creek Comment
  UCR67013  Atriplex triangularis A. C. Sanders 1990-10-6 10189 Orange Newport Bay, North Star County Beach Area on the SW end of the Bay, c. 2 km inland of Hwy 1. 3 Comment
  RSA234520  Atriplex watsonii James Henrickson 1970-7-25 5033 Orange 3.5 miles NW of Huntington Beach on sandy margin of Bolsa Bay, 1/4 mile SE of Warner Ave. along Pacific Coast Hwy. 0 Comment
  RSA453975  Atriplex watsonii F. R. Fosberg 1931-8-19 7285 Orange Newport Bay. 0 Comment
  RSA65426  Atriplex watsonii F. W. Peirson 1924-2-10 4533 Orange Corona Del Mar Comment
  POM48692  Atriplex watsonii I. M. Johnston 1924-8-29 s.n. Orange Balboa Island, salt marsh near bridge to mainland. Comment
  RSA734992  Avena barbata A. C. Sanders, T. B. Salvato 2008-5-13 35378 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  UCR193000  Avena barbata A. C. Sanders, T. B. Salvato 2008-5-13 35378 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  RSA681949  Avena fatua Fred M. Roberts, David E. Bramlet 2003-3-7 5566 Orange Donna O'Neill Land Conservancy; West slopes of Christianitos Canyon, Middle Ridge Trail, 0.1km NW Gato Gate. 123 Comment
  RSA0042730  Avena fatua David Barrios 1991-5-1 8 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir., Yorba Linda. 365 Comment
  UCR207787  Azolla filiculoides O. F. Clarke 2004-8-23 s.n. Orange Santa Ana River Valley, Yorba Linda, Yorba Regional Park, Santa Ana River bank near intersection of E. La Palma Ave. and Fairmont Blvd. 91 Comment
  RSA93210  Baccharis douglasii F. W. Peirson 1924-8-29 5092 Orange 3 miles N of Huntington Beach Comment
  CHSC35829  Baccharis emoryi James Henrickson 1972-10-21 8047 Orange Eastern Anaheim, 2 blocks E. of Imperial Hwy. along La Palma Ave, just N of Santa Ana River. 60 Comment
  LA103539  Baccharis emoryi Barry A. Prigge; 1983-12-17 5519 Orange Santa Ana Marsh and adjacent lowlands, southeasternmost part of oil field just N of Pacific Coast Highway between remnant Santa Ana River channel and dirt road 1 Comment
Read comments
Jun 12 2013
  RSA5324  Baccharis emoryi B. D. Stark 1932-12-30 14471 Orange Rancho Santa Ana. River bottom below Mexican houses. 122 Comment
  RSA731921  Baccharis emoryi Fred M. Roberts, Sandy Leatherman 2007-11-27 6658 Orange Anaheim: Santa Ana River, Santa Ana Canyon, just west of Horseshoe Bend on S side of E La Palma Ave., about 0.3km E Weir Cyn. Rd. bridge. 100 Comment
  RSA792937  Baccharis emoryi R. F. Thorne 1984-1 s.n. Orange Newport Back Bay. Comment
  RSA0036017  Baccharis emoryi Robert F. Thorne 1977-11-21 50806 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  JEPS57449  Baccharis glutinosa L. R. Heckard with T. I. Chuang and R. Bacigalupi 1968-7-16 2044 a Orange north of (across U.S. Highway 101 from Huntington State Beach) Newport Beach; Bolsas Marsh Comment
  RSA653416  Baccharis malibuensis R. E. Riefner, Adrian 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
  UCR205876  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08- 171 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Road 495 Comment
  RSA5596  Baccharis pilularis B. D. Stark 1933-1-21 4523 Orange San Clemente Comment
  RSA613761  Baccharis pilularis B. Pitzer, T. Tennant 1997-11-8 3374 Orange Crystal Cove State Park, Pelican Point Area, grassland area between Pacific Coast Hwy and the bike trail. 30 Comment
  SD73484  Baccharis pilularis P. C. Everett 1934-11-7 6246 Orange Rancho Santa Ana Botanic Garden; open hilltop. 199 Comment
  UCR103721  Baccharis pilularis B. G. Pitzer, T. Tennant 1997-11-8 3374 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland area between Pacific Coast Hwy and the bike trail. 30 Comment
  UCR66992  Baccharis pilularis A. C. Sanders 1990-10-6 10200 Orange South Coast, Newport Back Bay, SW side at North Star County Beach, SW end of the bay, c. 2 km inland from Hwy 1/ Pacific Coast Hwy 3 Comment
  UCSB48036  Baccharis pilularis Roberts, Fred 1981-9-26 Orange Laguna Beach; Pacific coast Highway, 1.1 km. SE El Moro School near Abalone Point 39 Comment
  LA203035  Baccharis pilularis subsp. consanguinea C. B. Wolf; 1934-12-26 6262 Orange S-end of town of San Clemente 15 Comment
  HSC5108  Baccharis salicifolia T. L. Ackerman 1964-3-28 15 Orange On Irvine Park Dr. inside Irvine Park Comment
  IRVC27500  Baccharis salicifolia Mark A. Elvin 2004-5-2 3414 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  IRVC29766  Baccharis salicifolia Barry S. Nerhus, Mark A. Elvin 2006-11-4 7 Orange Huntington Beach, Bolsa Chica Wetlands, SW portion of Reserve beside Pacific Coast Highway. Southern Coastal 0 Comment
  RSA658218  Baccharis salicifolia T. A. Daubert 1991-5-19 649 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  SEINET899257  Baccharis salicifolia L. Freeman 1963-1 142 Orange Diamond Bar Ranch in Brea Canyon, Santa Ana Mountains. 244 Comment
  UCR154338  Baccharis salicifolia Mark A. Elvin 2004-5-2 3414 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  UCR223420  Baccharis salicifolia Dick Newell, Don Millar 2011-3-1 066 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  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-BC16365  Barbarea orthoceras E. K. Balls 1955-4-4 20427 Orange 2.7 miles southwest from Orange-Riverside County line, along Highway 74, San Juan Capistrano to Elsinore. 304 Comment
  SBBG47294  Bassia hyssopifolia R. N. Philbrick 1973-8-31 Orange marsh just E of University of California, Irvine Comment
  RSA184173  Bassia hyssopifolia I. L. Wiggins 1966-4-22 20616 Orange On eroded roadway leading to oilwell, W side of Associated Road, between Yorba Linda Boulevard and Imperial Highway. Comment
  CAS-BOT-BC75517  Batis maritima Peter H. Raven 1957-9-28 11389 Orange At north limits of Surfside. Comment
  LA105119  Batis maritima Barry A. Prigge; 1988-6-30 8118 Orange eastern edge of Newport Beach, NE of Pacific Coast Hwy bridge over Santa Ana River/Greenville-Banning channels 0 Comment
  RSA30658  Batis maritima L. C. Wheeler 1932-6-25 858 Orange Newport Bay. 3 Comment
  RSA439760  Batis maritima Anstruther Davidson 1902-9-1 s.n. Orange Newport Beach Comment
  RSA768518  Batis maritima Justin M. Wood 2009-12-1 1388 Orange Santa Ana River: marsh just upstream of Pacific Coast Highway. 0 Comment
  UC1779704  Batis maritima Rudolf Schmid 1999-7-14 1999 -7 Orange Bolsa Chica Marsh, S of Seal Beach. From the S side of parking lot by HW1. Comment
  POM50755  Bebbia juncea Helen D. Geis 1902-1 550 Orange Santiago Creek Canyon Comment
  RSA602112  Bebbia juncea Scott D. White 1997-5-6 5034 Orange Santiago Canyon: ca. 1.5 mi N. of Modjeska Canyon. 'Lomas de Santiago' S178 351 Comment
  UCR192097  Bebbia juncea A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35283 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  IRVC22019  Bebbia juncea var. aspera D. Bramlet 1985-7-2 AH-1 Orange Anaheim Hills Golf Course, on knoll near #3 green, Anaheim 183 Comment
  IRVC22020  Bebbia juncea var. aspera D. Bramlet 1985-7-2 AH-1 Orange Anaheim Hills Golf Course, on knoll near #3 green, Anaheim 183 Comment
  IRVC25148  Bidens laevis Fred M. Roberts 1986-9-3 3136 Orange adjacent to Anaheim, between Yorba Linda Regional Park and Imperial Hwy, Santa Ana River 88 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
  SD236124  Bloomeria crocea A. C. Sanders, Fred M. Roberts 2008-5-6 35266 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, slope SE of road junction along ridge road, near head of Aqua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  UCR140788  Bloomeria crocea Robin G. Marushia 2004-5-4 008 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
  RSA698736  Bloomeria crocea Minor Warne 1934-04 s.n. Orange Panerama Heights Comment
  RSA0047638  Bloomeria crocea var. crocea R. E. Riefner Jr. 2014-5-13 14 -120 Orange City of San Clemente, Rancho San Clemente Trail, east c. 0.15 mi. from Ave. Salvador and south c. 0.1 mi. off Utility Access Rd. 239 Comment
  CAS-BOT-BC31016  Bolboschoenus maritimus Helen D. Geis 1902-11-1 s.n. Orange Santa Ana Peat Lands. Comment
  CAS-BOT-BC21114  Bolboschoenus maritimus subsp. paludosus James R. Shevock 1972-9-27 2292 Orange South Coast Ranges. Upper Newport Bay, city of Newport Beach. 1 Comment
  UCR146418  Bolboschoenus maritimus subsp. paludosus Sandra L. Leatherman 1998-9-3 48 Orange Coastal Plains & Basins; South Coastal Plain, Dana Point: Monarch Beach, northeast of the intersection of State Highway 1 and Crown Valley Parkway, and west of Salt Creek 30 Comment
  SD87778  Bolboschoenus maritimus subsp. paludosus F. W. Peirson 1925-4-12 5749 Orange Laguna Canyon. 106 Comment
  UCD56816  Bothriochloa barbinodis P. B. Kennedy 1924-2-5 s.n. Orange Irvine Range. Comment
  UCR151112  Bothriochloa barbinodis Scott D. White, Pam DeVries 1998-12-10 7203 Orange Santa Ana Mtns foothills, Brea: Tonner Canyon and adjacent slope, just east of Hwy 57 crossing 198 Comment
  UCR140887  Bougainvillea glabra Robert DeRuff 1988-9-16 348 Orange Southern Coast, Newport Beach, Newport Back Bay, path between 23rd Street and Mariners Drive 9 Comment
  IRVC18518  Bowlesia incana A. B. McGee 1981-3-27 Orange UCI Ecological Preserve. Irvine Comment
  POM190177  Bowlesia incana Marcus E. Jones 1931-3-23 28128 Orange Laguna. Comment
  RSA625803  Bowlesia incana Scott D. White, Noel Davis 1998-4-24 6339 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
  UCD127256  Bowlesia incana Ronni Stachelek; Bob Anderson, Frances Schropshire 1995-3-1 39 Orange Newport Beach, Upper Newport Bay on Back Bay Drive ca. 1/2 miles north of Shellmaker Island. Comment
  RSA0058187  Brachypodium distachyon Fred M. Roberts 2014-4-21 7872 Orange South Coast: San Joaquin Hills: Upper Laguna Lake 1 (upper Laguna Lake), south basin. 113 Comment
  UCR239225  Brachypodium distachyon Fred M. Roberts 2012-4-24 7509 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  RSA0066349  Brassica nigra A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34626 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir. 280 Comment
  CAS-BOT-BC36767  Brassica rapa Ira L. Wiggins 1965-11-7 20359 Orange Vacant lot between State College Boulevard and Troy High School campus, Fullerton. Comment
  RSA0069232  Brassica tournefortii Fred M. Roberts, Megan Lulow 2009-3-18 7137 Orange Santa Ana Mtns. Region: Lomas de Santiago: Loma Ridge at Calochortus Ridge, near East Loma Ridge Road, 2.6 km NW Bee Peak, &3.4 km NE of Rattlesnake Reservoir Dam. 375 Comment
  UCR132993  Briza minor Adrian Wolf 2001-7-16 456 Orange Santa Ana Mtns., North Ranch Policy Plan Area, North Baker Canyon Road 305 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
  RSA587119  Brodiaea jolonensis R. E. Riefner 1994-6-15 94 -253 Orange South bluffs, San Clemente State Beach. Comment
  CAS-BOT-BC144299  Bromus arizonicus Ira L. Wiggins 1966-4-22 20617 Orange Shoulder of pavement along Associated Road between Yorba Linda Boulevard and Imperial Highway. Comment
  RSA184166  Bromus arizonicus I. L. Wiggins 1966-3-1 20482 Orange Along W edge of California State College, Fullerton. Comment
  POM265763  Bromus carinatus J. C. Roos 1937-5-10 2079 Orange East of San Juan Capistrano. Comment
  UCR191004  Bromus carinatus A. C. Sanders, Fred M. Roberts 2008-4-22 35025 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  RSA542560  Bromus carinatus var. carinatus Fred M. Roberts, Karlin G. Marsh 1987-5-14 3442 Orange NSanta Ana Moutains: Upper Trabuco Canyon, Trabuco Canyon Trail , 1.3 km NNE Los Pinos Peak 1192 Comment
  RSA184072  Bromus catharticus I. L. Wiggins 1965-11-5 20326 Orange In orange grove on N side of Chapman Avenue, near Kraemer Road. Comment
  CAS-BOT-BC156005  Bromus diandrus Ira L. Wiggins 1965-9-29 20267 Orange Orange grove south of Letters and Science Building, California State College at Fullerton, near entrance to campus. Comment
  UC1131180  Bromus diandrus A. Lewis Apr 1934 393 Orange San Joaquin Hills 60 Comment
  RSA590949  Bromus diandrus Fred M. Roberts 1991-5-2 4776 Orange San Joaqui Hills, Laguna Canyon, Laguna Laurel, Just W of Laguna Canyon Road, 2km N jct El Toro Road, 4.5km E Signal Peak., UTM Z113718000mN, 4 29 200m E 110 Comment
  UCR190962  Bromus hordeaceus A. C. Sanders, Fred M. Roberts 2008-4-22 35041 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, valley at south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado, above spring shown on topo map 457 Comment
  UC149788  Bromus madritensis subsp. rubens H. M. Hall May, 1902 3283 Orange along Santa Ana River Santa Ana River 182 Comment
  UC971750  Bromus madritensis subsp. rubens L. M. Booth 1932-5-12 1043 Orange Newport Bay Comment
  CAS-BOT-BC161821  Bromus rubens Ira L. Wiggins 1966-3-16 20526 Orange Near entrance to Firestone Boy Scouts Reservation. Comment
  CAS-BOT-BC161824  Bromus rubens C. L. Hitchcock; C. V. Muhlick 1964-3-17 23060 Orange 8 miles east of Yorba Linda, Santa Ana Canyon. Comment
  RSA697681  Bromus rubens Anonymous 45 Orange Orange County park Comment
  UCD59511  Bromus rubens Beecher Crampton 1963-5-7 6791 Orange Ca. 11 miles northeast of San Juan Capistrano, State Hwy. 74, Lower San Juan Canyon, Santa Ana Mountains. Comment
  RSA650419  Bromus rubens R. B. Newcom 1948-4-24 25 Orange approx. 3 miles N.W. of Irvine Park. Comment
  RSA650420  Bromus rubens Howard Cook 1948-4-15 13 Orange Collected on highway 14, about 8 miles east of Fullerton. 91 Comment
  CLARK-A1528-972  Bromus willdenowii Patricia A. Andrews 1975-6-26 5918 Orange Capistrano Bay Beach 9 Comment
  IRVC26750  Bulbine Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3176 Orange UCI Arboretum Southern Coastal 15 Comment
  POM202606  Cakile edentula subsp. edentula L. M. Booth 1932-5-27 1131 Orange Newport Beach Comment
  POM543  Cakile edentula subsp. edentula D. L. Crawford 1916-7-28 s.n. Orange Abalone Point Comment
  RSA484558  Cakile edentula subsp. edentula Anstruther Davidson 1789 Orange Newport Beach; Santa Anna [Ana]. Comment
  RSA716783  Calamagrostis koelerioides Fred M. Roberts, Carol A. Roberts, Devoree Volgado 1995-5-6 4941 Orange Santa Ana Mountains region: Ridge between Hot Springs Cyn. and Viejo Cyn., San Juan Trail, 3.7 km WNW Lower San Juan Picnic Ground. 622 Comment
  UCR113458  Calandrinia breweri R. E. Riefner Jr. 2000-4-15 20- 374 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running north, but west of Black Star Canyon Rd. at powerline tower 520 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
  UCR217453  Calandrinia ciliata Mark A. Elvin 2003-1-26 2231 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  CAS-BOT-BC438321  Calandrinia ciliata Ira L. Wiggins 1966-3-5 20513 Orange About 1/2 mi. W. of El Toro Post Office, along Highway S-18. Comment
  CDA5109  Callistemon viminalis R. E. Riefner Jr. 2006-10-19 06 -559 Orange City of Newport Beach, Irvine Coast Trail at San Diego Creek, near SR-73 crossing, south of Jamboree Road. 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
  POM13942  Calochortus catalinae William M. Pierce 1922-4-11 s.n. Orange Santa Ana Mountians, Santa Ana Canyon. Comment
  RSA220977  Calochortus catalinae E. W. Lathrop 1966-3-23 6098 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA542334  Calochortus catalinae Fred M. Roberts 1988-4-10 3918 Orange Lomas De Santiago: Loma Ridge, Lower Santiago Canyon drainage, 1.1kilometer NNW Bolero Lookout. 451 Comment
  RSA602120  Calochortus catalinae Scott D. White 1997-5-6 5047 Orange Santa Ana Mountains. Santiago Canyon area: Ridgetop road N and W of Bolero Lookout. 427 Comment
  RSA741482  Calochortus catalinae R. E. Riefner 2008-4-20 8 -66 Orange On Loma Ridge, near city of Irvine, E side of Hicks Haul Rd., Irvine Ranch Reserve, Management Area 11. Comment
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Feb 2 2011
  RSA749289  Calochortus catalinae Fred M. Roberts 1999-4-2 5167 Orange Lomas de Santiago: ridge between Limestone Cyn. and Santiago Creek wash, 0.7 km W Silverado Sch. and 4.3 km NNW Bolero Lookout. 330 Comment
  RSA750699  Calochortus catalinae D. E. Bramlet 2008-3-26 4124 Orange Bee Cyn. Bowerman landfill site. 148 m S of the Bee Cyn Access Road, 296 m W of the landfill entrance. Comment
  RSA753418  Calochortus catalinae D. E. Bramlet 2008-3-31 4136 Orange 223m E of Upper Hicks Haul Rd, Trib. to Limestone Cyn, 1km S of Santiago Cyn Rd. 328 Comment
  RSA788917  Calochortus catalinae Fred M. Roberts 1999-6-10 5239 Orange Lomas de Santiago: Loma Ridge, Agua Chinon Cyn., 1.3 km S Bolero Spring and 2.2 km W Bolero Lookout. 285 Comment
  UCR203974  Calochortus catalinae D. E. Bramlet 2008-3-26 4124 Orange Peninsular Range; Santa Ana Mountains, Bee Canyon, Bowerman landfill site. 148 m south of the Bee Canyon access road and 296 m west of the active landfill entrance Comment
  UCR31355  Calochortus catalinae L. F. LaPre 1983-4-12 s.n. Orange Peralta Hills c. 0.5 mi south of Anaheim Hills residential development. Comment
  RSA0108729  Calochortus catalinae J. T. Howell 1928-3-17 863 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  POM23718  Calochortus splendens Russell S. Woglum 1938-5-8 1617 Orange Ortega Highway between Capistrano and Elsinore. Comment
  POM6366  Calochortus splendens Philip A. Munz, L. T. Street, G. Williams 1919-5-3 2625 Orange Santa Ana River Canyon. Comment
  RSA118  Calochortus splendens J. T. Howell 1928-4-7 895 Orange Bee Canyon, Rancho Santa Ana 152 Comment
  RSA602119  Calochortus splendens Scott D. White 1997-5-6 5046 Orange Santa Ana Mountains. Santiago Canyon area: Ridgetop road N and W of Bolero Lookout. 427 Comment
  RSA629047  Calochortus splendens Valerie L. Soza, LeRoy Gross 1999-6-10 525 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road 1555 Comment
  RSA679228  Calochortus splendens Fred M. Roberts 2003-6-25 5942 Orange Santiago peak, north slopes along ridge east of Main Divide truck trail, 0.6km NNW summit. 1605 Comment
  RSA734800  Calochortus splendens A. C. Sanders, Fred M. Roberts 2008-5-6 35247 Orange Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  RSA747589  Calochortus splendens Fred M. Roberts 2000-5-4 5317 Orange Lomas de Santiago: Loma Ridge, Hicks Cyn., west of SR 241, 1.9 km E Rattlesnake Reservoir dam and 2.1 km WSW Bee Peak. 210 Comment
  UCR150909  Calochortus splendens Valerie Soza, LeRoy Gross 1999-6-10 525 Orange Santa Ana Mountains, Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road 1555 Comment
  CAS-BOT-BC492705  Calochortus splendens Palmer Stockwell 1935-5-12 1216 Orange 7 miles E of Mission San Juan, Capistrano, on Elsinore Road Comment
  RSA68629  Calochortus splendens Frank W. Peirson 1923-5-5 4097 Orange Divide 1 mile east of El Modena. Comment
  CAS-BOT-BC132659  Calochortus weedii var. intermedius H. F. Copeland 1938-6-29 1574 Orange Hills back of Laguna Beach Comment
  RSA0014068  Calochortus weedii var. intermedius Fred M. Roberts, Richard E. Riefner 2010-5-30 7020 Orange Santiago Canyon Rd. in small canyon below Irvine Mesa, 1.1 km SE Silverado Sch., c.a. 2 km by road SE Silverado Cyn. Rd. junction 337 Comment
  RSA588989  Calochortus weedii var. intermedius D. E. Bramlet 1994-6-23 2389 Orange Upper portion of Little Sycamore Canyon, W of Laguna Canyon Road. 140 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
  RSA741483  Calochortus weedii var. weedii R. E. Riefner 2008-6-5 8 -145 Orange Near City of Orange, W side of Hicks Haul Rd., Rattlesnake Cyn., SW of the asphalt plant, Irvine Ranch Reserve, Management Area 6. Comment
  UCR132888  Calochortus weedii var. weedii Adrian Wolf 2000-6-20 464 Orange Santa Ana Mtns., North Ranch Policy Plan Area, 0.62 km NNW of mouth of Black Star Canyon 305 Comment
  RSA17143  Calycadenia tenella C. B. Wolf 1936-6-17 7946 Orange Santa Ana Mountains, along Ortega Highway 5.6 miles above San Juan Capistrano. 76 Comment
  RSA733692  Calycadenia tenella Keith E. Hoffmaster 1934-5-1 359 Orange San Onofre Comment
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Nov 19 2013
  RSA733841  Calycadenia tenella A. C. Sanders 2008-4-29 35130 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
  RSA732151  Calystegia macrostegia A. C. Sanders, Fred M. Roberts 2008-4-22 35016 Orange Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir. 213 Comment
  UCR191333  Calystegia macrostegia A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34616 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 290 Comment
  CAS-BOT-BC215766  Calystegia macrostegia subsp. arida Le Roy Abrams 1901-6-14 1800 Orange Trabuco Canyon Comment
  JEPS31613  Calystegia macrostegia subsp. arida Alice King April, 1908 Orange Santiago Creek; Santa Ana Mts., Santiago Creek Comment
  IRVC975  Calystegia macrostegia subsp. intermedia L. McCabe 1965-4-27 Orange Corona del Mar. Newport Beach Comment
  CSUSB669  Calystegia macrostegia subsp. longiloba Donna C. Stonewall 1966-4-8 23 Orange Modjeska Canyon Modjeska Canyon Road, Modjeska Canyon 365 Comment
  RSA394914  Calystegia macrostegia subsp. tenuifolia H. L. Bauer 1929-5-7 s.n. Orange Santa Ana Canyon Comment
  JEPS47849  Calystegia soldanella Alice King June 1908 Orange Newport Comment
  RSA697158  Calystegia soldanella R. H. McArthur 1934-4-7 s.n. Orange Near outlet of Santa Ana River. Just above tide line. Comment
  POM201887  Camissonia bistorta L. M. Booth 1932-5-12 1034 Orange Newport Bay Comment
  RSA466970  Camissonia bistorta E. S. Spalding 1923-12-1 s.n. Orange San Juan Capistrano, sea shore Comment
  RSA542487  Camissonia bistorta Fred M. Roberts, Carol A. Williams 1988-4-12 3922 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Canyon, northwest of Dripping Springs, 2.7 km NW Bolero Lookout. 143 Comment
  RSA542489  Camissonia californica Fred M. Roberts, T. Sholars, B. Stechmeyer 1988-3-29 3884 Orange Santa Ana Mountains: Hot Springs Canyon, 1.3 km N Highway 74 by road, 0.7 km NW Juan Rancho Survey Mark. 84 Comment
  RSA731977  Camissonia californica A. C. Sanders 2008-4-1 34658 Orange Peninsular Range: Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 250 Comment
  RSA759152  Camissonia californica 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
  CHSC10115  Camissonia cheiranthifolia subsp. suffruticosa J. W. Johnson 1960-8-18 Orange Newport Beach. Beside Newport Bay by Highway 101. Comment
  CSUSB191  Camissonia cheiranthifolia subsp. suffruticosa Steve Kulju 1974-5-27 Orange Seal Beach; One mile southeast of the city of Seal Beach on State Highway 1. 4 Comment
  POM180497  Camissonia cheiranthifolia subsp. suffruticosa L. R. Abrams 1917-6-23 6576 Orange Balboa 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
  RSA539394  Camissonia ignota Fred M. Roberts, Carol A. Roberts 1988-6-2 4033 Orange Santa Ana Mountains: Silverado Canyon. Maple Springs Truck trail. 4.3 km above gate, 1.0 km WSW Bald Peak. 817 Comment
  RSA609006  Camissonia lewisii L. M. Booth 1932-5-12 1034 Orange Newport Beach. Comment
  SDSU3324  Camissoniopsis bistorta H. Wedberg 1958-3-29 175 Orange On road around south edge of Newport Bay, about 2.3 miles from Pacific Coast Highway. 3 Comment
  SDSU3325  Camissoniopsis bistorta Wedberg 1958-3-29 176 Orange Along roadside of Pacific Coast Hwy. south of Laguna and 0.15 mi. north of Dana Pt. Historical Landmark #189. 58 Comment
  SBBG40397  Camissoniopsis bistorta J. Ingram 1960-3-14 244 Orange La Palma Ave, ca. 2 blocks E of Knotts Berry Farm, Buena Park Comment
  UC1719511  Camissoniopsis cheiranthifolia subsp. cheiranthifolia D. Atwood 1993-3-26 17699 Orange Corona Del Mar State Park along Newport Coast Drive 0 Comment
  CAS-BOT-BC160446  Camissoniopsis cheiranthifolia subsp. suffruticosa H. E. McMinn 1924-7-19 1291 Orange Sunset Beach Comment
  JEPS31488  Camissoniopsis cheiranthifolia subsp. suffruticosa L. M. Booth 1932-5-25 1114 Orange Balboa Island Newport Bay Comment
  UC523554  Camissoniopsis cheiranthifolia subsp. suffruticosa David D. Keck 1933-9-21 2523 Orange dunes about town Sunset Beach Comment
  IRVC25563  Capsella bursa-pastoris Fred M. Roberts 1989-3-17 4203 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  IRVC9150  Capsella bursa-pastoris B. Gittins 1963-3-22 61 Orange Orange Coast College Campus. Costa Mesa Comment
  CAS-BOT-BC37126  Capsella bursa-pastoris Ira L. Wiggins 1966-2-16 20445 Orange Orange grove on north side of Yorba Linda Boulevard, near corner of Associated Road, Fullerton. Comment
  CAS-BOT-BC37594  Cardamine californica C. B. Wolf 1931-3-6 1851 Orange West slope of Santa Ana Mountains. Trabuco Canyon. Trabuco Camp Ground. 609 Comment
  POM369330  Cardamine californica var. integrifolia M. B. Dunkle 1933-3-5 3096 Orange San Juan Canyon, Comment
  UCR237835  Cardamine flexuosa Mark A. Elvin 2003-2-2 2298 Orange South Coast, UC Irvine Arboretum, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 17 Comment
  IRVC9185  Cardaria draba B. Gittins 1963-4-21 178-B Orange vacant lot west of Bristol, near Randolph Street. Costa Mesa Comment
  POM293161  Cardionema ramosissimum Lyman Benson 1946-4-27 s.n. Orange Corona Del Mar; Drainage area: Pacific Ocean. 15 Comment
  IRVC22650  Carduus tenuiflorus H. Camp 1986-4-24 7 Orange Bell Canyon, 1.4km NW Visitor Center, Casper's Regional Park 126 Comment
  CAS-BOT-BC118489  Carex praegracilis Helen D. Geis 1902-4-1 504 Orange Unspecified Comment
  CAS-BOT-BC118490  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Unspecified Comment
  POM202036  Carex praegracilis L. M. Booth 1932-7-1 1234 Orange Anaheim Marsh Comment
  CAS-BOT-BC118488  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Peat Lands Comment
  RSA581445  Carex spissa Fred M. Roberts, Gordon Marsh 1989-5-12 4365 Orange Santa Ana Mountains: Santiago Canyon, Flemming Regional Park, just E of Modjeska at end of paved road, ca. 3.0 kilometers WSW Laurel Springs. 436 Comment
  SD40041  Carpobrotus chilensis Edith A. Purer 1932-8-31 4881 Orange Orange county along Route 101 Comment
  UCR100457  Carpobrotus chilensis B. G. Pitzer 1996-4-30 2768 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR204231  Carpobrotus chilensis Valerie Soza, LeRoy Gross, Kevin Clark, Will Miller, Fred M. Roberts, G. D. Wallace 2001-4-4 1106 Orange South Coast, Seal Beach National Wildlife Refuge, Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226) 3 Comment
  RSA643429  Carthamus baeticus R. D. Goeden, D. W. Ricker 1965-7-7 s.n. Orange Puente Hills: Brea Blvd. at Tonner Cyn Rd. confluence of Brea and Tonner Canyons, NE edge of Brea 146 Comment
  CAS-BOT-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
  IRVC9281  Caryophyllaceae B. T. Gittins 1965-4-20 1153 Orange Corona del Mar, between Rancho Cerritos Riding Stables and Cameo Shores; coastal bluff. Newport Beach Comment
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Feb 27 2019
  RSA420738  Castilleja Albert J. Perkins 1913-2-13 s.n. Orange Peralta. Comment
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Jun 16 2012
  POM193492  Castilleja affinis Helen E. Sweet 1928-08 s.n. Orange Santiago Canyon. Comment
  RSA0010908  Castilleja affinis Keith E. Hoffmaster 1927-4-8 530 Orange Santa Ana Mountains. Comment
  RSA264581  Castilleja affinis C. W. Tilforth, Dorothy Tilforth 1977-6-3 1259 Orange Large wash west of Weir Canyon, c. 10 mi. w. of Corona, south side of Santa Ana River. 152 Comment
  JEPS57262  Castilleja affinis subsp. affinis L. R. Heckard and R. C. Bacigalupi 1968-5-8 1834 Orange ca 7.5 mi ne San Juan Capistrano (along San Juna Valley road) 30 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
  UCR150921  Castilleja affinis subsp. affinis Valerie Soza, LeRoy Gross 1999-6-7 480 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 Comment
  RSA221095  Castilleja applegatei subsp. martinii E. W. Lathrop 1966-5-1 6254 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland Nat'l Forest, Santa Ana Mountains. 396 Comment
  JEPS18961  Castilleja exserta subsp. exserta Rimo Bacigalupi with Francia Chisaki 1957-4-3 5787 Orange 6 mi s Irvine (along U.S. Hwy 101) 121 Comment
  RSA400600  Castilleja foliolosa H. L. Bauer 1929-4-20 s.n. Orange Trabuco Canon. Comment
  SBBG104116  Castilleja foliolosa B. Pitzer, S. Hemstreet 1992-5-27 1953 Orange USFS Rd 3S04 to Blue Jay Group Cmpgrd, off St Hwy 74, ca. 2 air mi W of El Cariso Cmpgrd 762 Comment
  UCSB47636  Castilleja foliolosa Roberts, Fred 1980-5-3 Orange Main Divide Truck Trail; on north side of road; 0.1 km south of Trabuco Peak; Santa Ana Mtns 1350 Comment
  UCR26637  Castilleja martinii E. W. Lathrop 1966-5-1 6254 Orange Santa Ana Mtns., 5 mi east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest 400 Comment
  RSA448791  Castilleja minor subsp. spiralis F. R. Fosberg 1931-6-21 S- 5139 Orange Silverado Canyon. Santa Anita Mts. Comment
  RSA682761  Caulanthus heterophyllus Scott D. White, Amanda Duchardt 2003-3-27 8854 Orange Canyon bottom and west facing slopes above Canada Gobernadora. 91 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
  UCR191365  Caulanthus heterophyllus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34623 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
  UCR158167  Ceanothus Adrian Wolf 1998-5-27 312 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
  UC774707  Ceanothus C. B. Wolf and E. Norland 1941-4-3 10029 Orange Comment
  CAS-BOT-BC48496  Ceanothus crassifolius J. T. Howell 1929-1-24 1219 Orange Near crest of Santa Ana Mts., south of Sierra Peak 762 Comment
  RSA1443  Ceanothus crassifolius J. T. Howell 1929-1-24 1219 Orange near crest of Santa Ana Mts. south of Sierra Peak. 762 Comment
  RSA172250  Ceanothus crassifolius Robert F. Thorne 1963-7-26 32829 Orange Santa Ana Mts., Cleveland National Forest, Trabugo District. 1189 Comment
  RSA755789  Ceanothus crassifolius Dylan O. Burge 2007-3-22 DOB 805 c Orange Santa Ana Mountains, Cleveland National Forest, 2.3 road miles from Highway 74 on USFS Road 3S04, 28.9 kilometers 50 degrees true east-northeast of San Juan Capistrano. 960 Comment
  UC1070733  Ceanothus integerrimus A. Lewis 1934-5-1 420 Orange Trabuco Elsinore quad., Cleveland National Forest 1341 Comment
  SEINET13945958 Image available Ceanothus integerrimus S. Lambert 1981-1 1958 Orange Cleveland Nat'l Forest, 15.6 mi E of hwy. 5 by hwy 74, roadside, 1350 ft elev. 411 Comment
  JEPS42110  Ceanothus megacarpus John Thomas Howell 1927-6-26 2609 Orange just w Sierra Peak (head of Calymine Canyon); Santa Ana Mts. Comment
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May 8 2008
  RSA734968  Ceanothus megacarpus A. C. Sanders, Fred M. Roberts, A. O'Neal, D. E. Bramlet 2008-5-9 35301 Orange Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  RSA735268  Ceanothus megacarpus Minor Warne 1934-03 s.n. Orange Gypsum canyon Comment
  SD130284  Ceanothus megacarpus B. Pitzer 1987-4-24 505 Orange 0.5 mile N of State Hwy 91, off Gypsum Canyon Rd., river at N side of stable. 120 Comment
  CAS-BOT-BC50508  Ceanothus megacarpus var. megacarpus John Thomas Howell 1927-7-24 2828 Orange Claymine Canyon, n. Santa Ana Mts. 152 Comment
  SBBG45051  Ceanothus megacarpus var. megacarpus J. T. Howell 1927-6-26 228 Orange Claymine Cyn near Sierra Pk 701 Comment
  RSA13146  Ceanothus oliganthus Percy C. Everett 1935-6-19 7234 Orange Main Divide Motorway, Bear Spring. 1220 Comment
  UCR234147  Ceanothus oliganthus Dick Newell, Judy Booth 2012-5-6 249 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, 1.2 miles NE of Maple Springs gate, Cleveland National Forest 695 Comment
  UCR234152  Ceanothus oliganthus Dick Newell, Judy Booth 2012-3-30 239 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, Cleveland National Forest 258 Comment
  RSA0054960  Ceanothus oliganthus Keith E. Hoffmaster 1936-4-5 707 Orange Black Star can., Santa Ana Mts. Comment
  UCSB48364  Ceanothus oliganthus var. oliganthus Roberts, Fred 1982-4-18 Orange SANTA ANA MTNS.: Upper Hot Springs Cyn., 0.1km SW Falcon Group Camp; 2.0km SE Los Pinos Peak 1075 Comment
  RSA748818  Ceanothus palmeri G. Gust, L. Nye 2005-3-12 563 Orange Cleveland National Forest, on Hwy 74 ca. 0.5 m W of county boundary with Riverside at a pullout. 401 Comment
  UC1071231  Ceanothus papillosus A. Lewis May 1934 424 Orange Trabucco Canyon Cleveland National Forest, Elsinore Quad. Comment
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Nov 15 2008
  CAS-BOT-BC53007  Ceanothus spinosus Carl B. Wolf 1936-6-17 7950 Orange Santa Ana Mts., along Ortega Highway, San Juan Canyon, 2/10 mi. W. of Riverside Co. line 274 Comment
  LA42099  Ceanothus spinosus W. Pequegnat; 1938-9-3 sn Orange Ortega Rd 365 Comment
  RSA0029934  Ceanothus spinosus Fred M. Roberts 2013-5-30 7776 Orange Lomas de Santiago: Santiago Creek Wash, at Santiago Canyon Road bridge (south side), 0.3 km W jct. Silverado and Santiago Canyon Roads. 299 Comment
  RSA16580  Ceanothus spinosus Percy C. Everett 1935-6-19 7241 Orange Trabuco Canyon, 0.8mi below (W) forest service patrol station 488 Comment
  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
  RSA25809  Ceanothus spinosus Carl B. Wolf 1941-8-15 11151 Orange W. slope Santiago Truck trail to Santiago Pk. 1.2 mi. above F.S. Gate. 610 Comment
  UC1071372  Ceanothus spinosus A. Lewis Apr 1934 383 Orange Santiago Canyon Cleveland National Forest, Corona Quad. Comment
  UCR174499  Ceanothus spinosus A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33062 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
  UCR191220  Centaurea melitensis A. C. Sanders 2008-4-29 35140 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  UCSB48218  Centaurea melitensis Roberts, Fred 1981-6-20 Orange Dana Point: 0.6km NE Dana Hills High School 67 Comment
  IRVC19500  Centaurium venustum Gordon A. Marsh 1983-6-9 s.n. Orange Laguna Beach; intermediate ridge between Arch and Portafina canyons. Southern Coastal Comment
  RSA391515  Centaurium venustum N. C. Cooper 1944-6-4 1356 Orange San Juan Canyon, Lower Campground. 457 Comment
  RSA648194  Centaurium venustum Karl Price 1988-4-19 19 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
  UCR230837  Centaurium venustum Dick Newell, Judy Booth 2011-6-26 195 Orange Peninsular Range; Santa Ana Mtns., Long Canyon Rd., NW of Hwy 74, Cleveland National Forest 965 Comment
  RSA761931  Centaurium venustum Suzanne Espino 2005-4-26 2 Orange Santa Ana Mountains, Caspers Wilderness Park, East Ridge Trial. Near water tank at E. 168 Comment
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Jun 6 2020
  RSA716092  Centromadia parryi Fred M. Roberts 2006-7-5 6349 Orange Bolsa Chica Ecological Preseve: Bolsa Chica Mesa, 0.8km SSW Chica Survey Marker and 1.4km SE jct. Pacific Coast Hwy. & Warner Ae. 7 Comment
  CAS-BOT-BC288841  Centromadia parryi subsp. australis Peter H. Raven 1957-9-28 11376 Orange N limits of Surfside Comment
  CAS-BOT-BC288846  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
  IRVC26685  Centromadia parryi subsp. australis Mark A. Elvin 2003-8-24 3012 Orange San Joaquin Hills, Irvine, UCI, 100m N of the intersection of Shady Canyon Drive and Bonita Canyon Road. Southern coastal 72 Comment
  RSA708451  Centromadia parryi subsp. australis Mark Elvin 2003-8-24 3012 Orange Southern coastal: San Jaquin Hills, Irvine, UCI, 100m N of the intersection of Shady Canyon Drive and Bonita Canyon Road. 72 Comment
  SD80940  Centromadia parryi subsp. australis James Henrickson 1970-7-25 5071 Orange 3 miles northeast of Huntington Beach at far northern end of Bolsa Chica Salt Marsh near pasture; along channel south of Flood Control channel (mak 10/07) 0 Comment
  UCR237987  Centromadia parryi subsp. australis D. E. Bramlet 2008-9-17 4306 Orange South Coastal Plain, Upper Newport Bay, West Mesa, 76 m east of Irvine Ave. & 305 m south of University Dr. 20 Comment
  RSA516  Ceratophyllum demersum J. T. Howell 1927-8-13 625 Orange Santa Ana River Bottom 152 Comment
  CAS-BOT-BC142076  Cercocarpus betuloides Peter H. Raven 1962-5-18 17753 Orange Main Divide Truck Trail at saddle about 1 mile north of Santiago Peak - Santa Ana Mountains 1493 Comment
  SD53072  Cercocarpus betuloides Peter H. Raven 1962-5-18 17753 Orange Main Divide Truck Trail at saddle about 1 mile north of Santiago Peak, Santa Ana Mountains 1493 Comment
  SBBG14720  Cercocarpus betuloides var. betuloides P. H. Raven 1962-5-18 17753 Orange Main Divide Truck Trail at saddle ca. 1 mi N of Santiago Peak 1493 Comment
  SBBG2894  Cercocarpus betuloides var. betuloides H. and M. Dearing 1937-3-12 Orange Santa Ana Cyn Comment
  CAS-BOT-BC279502  Chaenactis artemisiifolia John Thomas Howell 1927-6-5 2433 Orange Southern Puente Hills in the Santa Ana Canon [Canyon] 152 Comment
  CLARK-A1528-1693  Chaenactis artemisiifolia John C. Roos 1965-6-16 Orange Dana Point Comment
  RSA810  Chaenactis artemisiifolia J. T. Howell 1927-6-5 36 Orange just to E of Rancho Santa Ana 152 Comment
  RSA627556  Chaenactis artemisiifolia Sandy Leatherman, Fred M. Roberts, Trish Smith 1998-5-23 24 Orange Black Star Canyon: Spur Road off of Black Star Canyon Road. Area burned during spring 1998 400 Comment
  SD144055  Chaenactis glabriuscula Scott D. White 1997-3-28 4852 Orange Above Modjeska Canyon: Proposed water tank site. 424 Comment
  UCR16880  Chaenactis glabriuscula N. J. Moriarty 1973-5-27 730527 -4 Orange San Clemente State Beach, 0.5 mi south of Avenue Califia end Comment
  LA203171  Chaenactis glabriuscula var. glabriuscula Robert G. Engman; sn Orange Dana Point Comment
  UC565566  Chaenactis glabriuscula var. orcuttiana H. L. Mason 1926-4-25 2914 Orange 5 mi s Laguna Comment
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Feb 3 2015
  RSA653184  Chamaesyce albomarginata David Barrios 1991-5-8 28 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 365 Comment
  RSA734740  Chamaesyce albomarginata L. C. Wheeler 1946-8-8 6225 Orange Imperial Highway 1/4 mi. west of Caroline Ave, 2 mi. east southeast of Brea. Comment
  CDA28633  Chamaesyce maculata Mark A. Elvin, D. G. Kelch 2006-12-9 5301 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  POM21180  Chamaesyce nutans Helen D. Geis 1902-04 s.n. Orange Roadside, Santa Ana Comment
  SEINET3869782  Cheilanthes clevelandii M. D. Windham 1998-3-31 98 -088 Orange Along tributary of Hot Spring Canyon in the Santa Ana Mts. ca. 3.00 km SE of Crow Spring. Cleveland N.F. Canada Gobernadora Quad ( 7 1/2 min. ).; 0 320 Comment
  IRVC19707  Cheilanthes newberryi Karlin G. Marsh 1983-7-14 Orange Laguna Canyon between Camarillo and Laural Canyons on Irvine Ranch; 3 small clusters on large outcrop beneath narrow ledge. San Joaquin Hills Comment
  UCSC001079  Cheilanthes newberryi Peter Kamb 1948-6-19 1092 Orange Cliff in canyon bottom - Santa Ana Mts., Holy Jim Canyon 610 Comment
  HSC4362  Chenopodium album D. W. Snell 1964-3-22 4 Orange 0.5 mi. S of Imperial Hwy., 1 mi. W of Yorba Linda. Comment
  IRVC15079  Chenopodium album T. W. Mulroy 1973-3-20 Orange Bolsa Chica [Salt Marsh] Comment
  CDA25888  Chenopodium ambrosioides Mark A. Elvin, B. S. Nerhus 2006-11-4 5246 Orange Southern Coastal; Huntington Beach; 1.5 km southwest of Wintersburg, southwest of junction Slater and Goldenwest; Shipley Nature Center. Comment
  IRVC24288  Chenopodium ambrosioides Fred M. Roberts, G. A. Marsh 1985-10-26 2512 Orange Santa Ana River: adjacent to Huntington Beach; 0.7km SSW Adams Street bridge. southern coastal 4 Comment
  RSA0027426  Chenopodium ambrosioides Fred M. Roberts 2013-7-18 7668 Orange San Joaquin Hills: Newport Beach, Buck Gully, west end, just east of north terminus of Poppy Street and 2.2 km WNW summit of Pelican Hill. 39 Comment
  RSA234523  Chenopodium ambrosioides James Henrickson 1970-8-22 5298 Orange 2.5 miles NNW of Huntington Beach 0 Comment
  UCR192993  Chenopodium berlandieri A. C. Sanders, Fred M. Roberts 2008-5-6 35218 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  POM122892  Chenopodium berlandieri var. sinuatum Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA234491  Chenopodium berlandieri var. sinuatum James Henrickson 1970-8-29 5304 Orange 3 miles NW of Huntington Beach; north end of Bolsa Chica Marsh near pasture. 0 Comment
  RSA573305  Chenopodium berlandieri var. sinuatum Steve Boyd 1994-9-14 8362 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
  IRVC25457  Chenopodium californicum Fred M. Roberts 1987-4-21 3390 Orange Aliso Creek, Aliso Creek Bike Trail, 3.0km ENE Moulton Peak, Aliso Viejo 73 Comment
  RSA749307  Chenopodium californicum Fred M. Roberts, Linda Farley 2008-3-28 7035 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork along ridge just west of SR241, 3.4 km E Robber s Peak, Irvine Land Conservancy. 437 Comment
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Mar 23 2020
  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
  IRVC397  Chenopodium murale B. Newman 1965-3-31 Orange Corona del Mar, Jamboree Rd. Newport Beach Comment
  RSA165143  Chenopodium murale Mark Parratt 1962-4-11 139 Orange Corona del Mar beach head. 4 Comment
  RSA731958  Chenopodium murale Fred M. Roberts, Sandy Leatherman 2007-11-27 6698 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. ca. 0.3 km S Fairmont Blvd. 118 Comment
  RSA573428  Chenopodium murale Steve Boyd, Timothy S. Ross 1994-9-14 8347 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon trail at stream crossing in Aliso Canyon. 341 Comment
  UCR64876  Chenopodium pumilio Tim Hartz 1990-11-19 s.n. Orange Irvine U.C. South Coast Field Station, near the U.C. Irvine Campus. Comment
  UC1618023  Chorizanthe Donald G. Nelson 1935-4-6 250 Orange e. San Juan Capistrano (and just s. of boundary of Cleveland Nat'l Forest) Comment
  UC1618038  Chorizanthe Donald G. Nelson 1935-4-14 292 Orange near Pacific Electric Railway Station Newport Beach Comment
  POM50446  Chorizanthe parryi var. fernandina Helen D. Geis 1902-1 541 Orange Near Santa Ana Comment
  RSA588980  Chorizanthe procumbens D. E. Bramlet 1994-6-23 2388 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
  RSA588983  Chorizanthe procumbens D. E. Bramlet 1994-6-2 2379 Orange San Joaquin Hills. On ridgeline north of Little Sycamore Canyon. The site is located 244m NE of Little Sycamore Canyon and 488m west of Laguna Cyn. Road. 165 Comment
  RSA678497  Chorizanthe procumbens Fred M. Roberts, Robert L. Allen, Carol Roberts 2003-5-11 5845 Orange Dana Point Headlands: 0.8km SSW Richard Henry Dana School north of Marguerita Drive. 76 Comment
  RSA785186  Chorizanthe procumbens D. E. Bramlet 1983-5-28 1388 Orange Dana Point, 154 m SW of Pacifc Coast Highway 73 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
  RSA182  Chorizanthe staticoides J. T. Howell 1927-6-8 61 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  RSA392687  Chorizanthe staticoides M. B. Dunkle 1938-6-23 5378 Orange San Juan Canyon. Comment
  UC1607969  Chorizanthe staticoides Donald G. Nelson 1936-6-5 433 Orange hills n.e. Fullerton 91 Comment
  RSA0015956  Chorizanthe staticoides subsp. chrysacantha Fred M. Roberts 2012-5-10 7566 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
  IRVC27493  Chrysanthemum coronarium Mark A. Elvin 2004-5-2 3407 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA639979  Chrysanthemum coronarium L. C. Wheeler 1947-5-3 6474 Orange Newport Bay. Comment
  RSA741480  Chrysanthemum coronarium R. E. Riefner 2008-5-22 09 -113 Orange Near City of Orange, Santiago Creek, vicinity of Hangman's Tree Canyon, Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
  UC1598731  Cicuta maculata var. bolanderi Lawrence M. Booth 1932-7-29 1333 Orange Newport Lagoon Comment
  CLARK-A1528-1094  Cirsium occidentale Michelle Loef 1973-5-25 250573-2 Orange 91 Comment
  RSA234513  Cirsium vulgare James Henrickson 1970-7-25 5066 Orange 2 miles N of Huntington Beach along NE margin of Bolsa Chica Salt March. 0 Comment
  RSA73302  Clarkia bottae F. W. Peirson 1924-5-31 4661 Orange Laguna Canyon, near Laguna Beach. 61 Comment
  UC1280309  Clarkia epilobioides John M. Tucker 1941-5-30 258 Orange 2-3 mi e of w boundary Cleveland National Forest (Ortega Highway) Comment
  RSA652344  Clarkia purpurea subsp. quadrivulnera T. Sargent 1959-5-17 s.n. Orange Car. [Carbon] Canyon above La Vida Springs. Comment
  UCR227632  Clarkia rhomboidea Robt. L. Allen 2003-6-22 12309 Orange Santa Ana Mountains, west-facing upper slope of Santiago Peak, along North Main Divide Road, c. 0.10 air mi northwest of Santiago Peak summit 1674 Comment
  RSA2076  Claytonia perfoliata subsp. mexicana C. B. Wolf 1931-3-6 1853 Orange Trabuco Canyon at Trabuco Camp Grounds, west slope of Santa Ana Mountains. 610 Comment
  RSA276911  Claytonia perfoliata subsp. mexicana J. M. Miller 1978-3-18 708 Orange San Juan Capistrano; 3.9 miles E of Hwy 101 junction in the San Juan Creek Valley, Hwy 74. 76 Comment
  UCR241062  Claytonia perfoliata subsp. perfoliata Dick Newell, Don Millar 2013-2-5 314 Orange Peninsular Range; Santa Ana Mtns., mouth of Fremont Canyon at mouth, 1/2 mi. NE of Irvine Dam spillway 213 Comment
  CAS-BOT-BC402194  Clematis lasiantha R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49689 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  CAS-BOT-BC91328  Clematis lasiantha P. C. Everett 1935-6-18 7218 Orange Santa Ana Mountains, summit of Santiago Peak. 1731 Comment
  UCSB29146  Clematis lasiantha Copp, Joseph 1962-3-9 Orange San Juan Can; Calif. 74; 8.8 rd. mi. northeast of US 101 Comment
  JEPS5750  Clematis ligusticifolia Lawrence M. Booth 1932-7-21 1290 Orange Anaheim Creek Comment
  RSA297  Clematis ligusticifolia J. T. Howell 1927-4-13 622 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  SEINET3821592 Image available Clematis ligusticifolia Lawrence M. Booth 1932-1 1290 Orange Anaheim Marsh Comment
  HSC25249  Clematis pauciflora Richard Spjut 1972-2-21 2216 Orange Santa Ana Mtns., Cleveland National Forest 305 Comment
  POM6466  Clematis pauciflora P. A. Munz, L. T. Street, G. Williams 1919-5-3 2651 Orange Santa Ana River Canyon. Comment
  POM183958  Cleome isomeris P. A. Munz 1932-3-29 12188 Orange Costa Mesa. Comment
  RSA234519  Cleome isomeris James Henrickson 1970-7-24 4958 Orange 1.5 miles NW of Huntington Beach, along border of Bolsa Chica Salt Marsh at SW end of Huntington Beach Mesa. 2 Comment
  RSA590957  Cneoridium dumosum Fred M. Roberts Jr., Karlin G. Marsh 1991-4-10 4767 Orange Laguna Beach: South Laguna, Temple Hill, ridge between Upper Hobo Canyon and Aliso Gorge, 1.7km NW Niguel Hill summit. 219 Comment
  SEINET8726617 Image available Cneoridium dumosum Lytton J. Musselman 1977-1 5469 Orange above Pacific Ocean at Laguna Beach near Nyes Road. Comment
  RSA0117446  Collinsia concolor A. C. Sanders, Fred M. Roberts 2008-4-22 35026 Orange Santa Ana Mtns.: Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado. 1200 Comment
  POM8762  Collinsia heterophylla Philip A. Munz, R. D. Harwood 1920-4-24 3747 Orange Santa Ana Mountains, Sierra [Freemont] Canyon. 366 Comment
  RSA0029945  Comarostaphylis diversifolia subsp. diversifolia Fred M. Roberts, Sandra Leatherman 2013-2-13 7719 Orange Santa Ana Mountains: Ridge south of central Santiago Canyon, near Joplin Trail, 3.7 km SE Modjeska (town). 792 Comment
  IRVC21613  Comarostaphylis diversifolia var. diversifolia Fred M. Roberts 1984-3-31 1317 Orange Niguel Hill, 1.0km ENE Aliso Peak, 2.1km SW Alicia Fire Station, Laguna Niguel 275 Comment
  IRVC23323  Conium maculatum Fred M. Roberts 1985-7-23 2078 Orange Irvine; San Diego Creek at Jeffrey Rd. bridge. Southern Coastal 35 Comment
  POM306305  Conium maculatum Henry J. Ramsey, Henry J. Ramsey 1938-6-5 1391 Orange Laguna Beach, Irvine Comment
  UCR193002  Conium maculatum A. C. Sanders, Fred M. Roberts 2008-6-17 35455 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  RSA184179  Conium maculatum I. L. Wiggins 1966-5-11 20661 Orange Carbon Canyon about 1 mile above its mouth. Comment
  IRVC972  Convolvulus arvensis L. McCabe 1965-5-3 Orange [Newport] Back Bay: Newport Beach Comment
  RSA38434  Convolvulus simulans E. L. Paddock 1943-5-3 s.n. Orange Graham & Loftus Oil Corp., 1 mile E of Brea 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
  CLARK-A1528-918  Conyza canadensis Patricia A. Andrews 1975-6-26 5908 Orange Capistrano Bay Beach 9 Comment
  POM201847  Conyza canadensis L. M. Booth 1932-12-13 1375 Orange Newport Bay. Comment
  RSA749046  Conyza canadensis A. C. Sanders, Fred M. Roberts 2008-8-7 36008 Orange Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
Read comments
Dec 21 2010
  CAS-BOT-BC133229  Conyza coulteri T. B. Salvato 2010-10-27 5139 Orange South Coast: Dana Point Headlands, Hilltop Park, north of Scenic Dr. and west of Green Lantern St., overlooking Dana Point Harbor 84 Comment
  RSA743520  Conyza coulteri Fred M. Roberts, Carol A. Roberts 2008-9-28 7111 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5 km W Marine Institute (Dana Point Harbor). 75 Comment
  RSA486866  Cordylanthus maritimus subsp. maritimus Gordon Marsh 1974-5-29 14209 Orange On east side of upper Newport Bay 2 Comment
  SEINET7067532  Cordylanthus rigidus subsp. rigidus A. G. Vestal 1947-6-12 s.n. Orange Grade above road-end at Silverado Canyon. Coordinate datum: NAD27. UTM Zone 11, 445596mE, 3734267mN. Comment
  RSA412301  Cordylanthus rigidus subsp. setiger M. B. Dunkle 1934-6-18 3992 Orange San Juan Canyon, Southern Coastal. 305 Comment
  CAS-BOT-BC101294  Corethrogyne filaginifolia John Thomas Howell 1927-9-24 3106 Orange on n. s. of Santa Ana [Canon] Canyon 152 Comment
  POM193490  Corethrogyne filaginifolia Helen E. Sweet 1928-08 s.n. Orange Santiago Canyon. Comment
  UC1119252  Corethrogyne filaginifolia A. Lewis 1934-4-1 402 Orange Arroyo Trabuco Corona Quadrangle Comment
  SD227735  Cotula coronopifolia Scott D. White, Brian Leatherman 1997-6-12 5335 Orange Santa Ana Mtn. foothills. East of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e., ca 2 to 4 mi E of I-15 / Hwy 74 jtn. 45 Comment
  UC1543192  Cotula coronopifolia Donald G. Nelson 1935-3-30 197 Orange near mouth Brea Canyon (n of Brea, near Portolas Camp) Comment
  UCR100452  Cotula coronopifolia B. G. Pitzer 1996-4-30 2774 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR138397  Cotula coronopifolia Scott D. White, Brian Leatherman 1997-6-12 5335 Orange Santa Ana Mtn. foothills, E of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e. c. 2-4 mi east of Hwy I-15/Hwy 74 junction 76 Comment
  RSA0054856  Cotula coronopifolia Grace Adams 1938-5-28 s.n. Orange Santiago Creek. Comment
  RSA696049  Cotula coronopifolia Stephen Bruff s.n. Orange Lemon Heights Comment
  RSA697177  Cotyledon laxa Kenneth Beard 1934-05 s.n. Orange Ladd Canyon. Comment
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Dec 20 2019
  POM13643  Crassula aquatica P. A. Munz 1921-4-12 4479 -a Orange Laguna Beach. Dying pool, 1 mile N of Laguna 61 Comment
  IRVC25399  Crassula connata Fred M. Roberts 1987-4-3 3338 Orange San Joaquin Hills; Irvine; central Shady Canyon, 2.9km NE Signal Hill. Central coastal 107 Comment
  UCR5169  Crassula connata Barbara T. Gittins, O. F. Clarke 1966-3-19 890 Orange Pacific slope, Irvine Ranch, east of University of California Irvine campus, Newport Beach 91 Comment
  POM3584  Cressa truxillensis D. L. Crawford s.n. Orange Laguna Beach Comment
  RSA0093742  Cressa truxillensis Fred M. Roberts 2014-4-21 7848 Orange South Coast. SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin. 113 Comment
  RSA627790  Cressa truxillensis Scott D. White 1998-6-26 6781 Orange South Coast: Univ. of Calif. Irvine Campus. Along mapped intermittent blueline stream just N of Bonita Cyn Dr. 61 Comment
  SEINET239007  Cressa truxillensis Unknown 1965-7-7 Orange Tustin township near Peters Canyon Channel E of Santa Ana Marine Corps Air Station (Tustin 7.5' Q.) 61 Comment
  UCR258351  Cressa truxillensis Fred M. Roberts 2014-4-21 7848 Orange South Coast, SAN JOAQUIN HILLS: Laguna Lake 1 (Upper Laguna Lake), south basin 113 Comment
  CDA4077  Crotalaria capensis A. C. Sanders, Mark A. Elvin 2003-10-12 27318 Orange Southern Coastal Slope; Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. Comment
  RSA682574  Crotalaria capensis A. C. Sanders, Mark Elvin 2003-10-12 27318 Orange Southern Coastal Slope: Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blve. and Campus Dr. 15 Comment
  UCR130343  Crotalaria capensis A. C. Sanders, Mark A. Elvin 2003-10-12 27318 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  POM17485  Croton californicus P. A. Munz 1923-4-1 6913 Orange 2 miles north of Laguna. 5 Comment
  RSA697576  Croton californicus Kenneth Beard s.n. Orange East of S. A. River on Edinger Road Comment
  UCD141986  Croton californicus G. L. Webster 1966-12-11 7480 Orange Dana Point. Comment
  POM146229  Cryptantha clevelandii var. florosa F. M. Reed 1926-4-14 5301 Orange Bluffs along sea at Arch Beach. 46 Comment
  POM49204  Cryptantha clevelandii var. florosa L. R. Abrams 1901-6-15 1821 Orange Santiago Peak trail. 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
  RSA680736  Cryptantha intermedia Scott D. White 2003-3-21 8824 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  UCR157485  Cryptantha leiocarpa A. C. Sanders 1986-5-31 6529 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
  POM6631  Cryptantha microstachys P. A. Munz, L. T. Street, G. Williams 1919-5-3 2620 Orange Santa Ana River Canyon. 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
  RSA0078870  Cryptantha muricata var. jonesii P. A. Munz 1923-6-14 7058 Orange Glen Ivy Trail to Santiago Peak. 1220 Comment
  JEPS42640  Cucurbita foetidissima L. M. Booth 1932-6-29 1227 Orange Newport Bay Comment
  UCR191219  Cucurbita foetidissima A. C. Sanders 2008-4-29 35141 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
  RSA394308  Cucurbita foetidissima F. R. Fosberg 1931-6-12 S- 5093 Orange Lower Santiago Can. 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
  OBI19347  Cupressus arizonica Carl B. Wolf 1935-1-2 6279 Orange Santa Ana Mts, slopes of Sierra Peak, W of Claymine cyn along road to peak 671 Comment
  RSA17651  Cupressus forbesii C. B. Wolf 1935-1-2 6278 Orange Slopes of Sierra Peak, west of Claymine Canyon, along road to Peak. 670 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
  UC219097  Cupressus forbesii Munz and Johnston 1922-5-18 5566 Orange second large canyon s Orange County line; Santa Ana Mts., Santa Ana River Canyon 304 Comment
  UCR112935  Cupressus forbesii R. E. Riefner Jr. 2000-1-18 20- 101 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Main Divide Road, top of Gypsum Canyon at Windy Ridge 518 Comment
  CAS-BOT-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
  RSA5932  Cuscuta californica C. B. Wolf 1932-7-2 3820 Orange Carbon Canyon, 1/8 mile below La Vida Springs 213 Comment
  UCR16113  Cuscuta californica Dave Cerf 1971-4-17 s.n. Orange Orange Park Acres, 0.25 mi. north of Twin Lakes 396 Comment
  UCR258625  Cuscuta campestris Fred M. Roberts 2014-7-25 7890 Orange South Coast, SAN JOAQUIN HILLS: Upper Laguna Canyon, Laguna Lake 1 (Upper Laguna Lake), north basin, c.a. 5.1 kn ENE summit Signal Hill. Laguna Coast Wilderness Park 113 Comment
  RSA788245  Cuscuta ceanothi R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49627 Orange Santa Ana Mountains: San Juan Canyon, along Ortega Highway (74) across from San Juan Fire Station Comment
  RSA797476  Cuscuta ceanothi R. F. Thorne 1977-11-21 49989 Orange Santa Ana Mountains: San Juan Canyon about 2 miles above San Juan Fire Station Comment
  RSA697260  Cuscuta pentagona Keith E. Hoffmaster 1934-7-15 s.n. Orange Near Santa Ana Comment
  SD28112  Cuscuta salina Carl B. Wolf 1932-7-7 3844 Orange Bryant Ranch, Bixby Ave. 6/10 mi. west of Hansen Rd. Comment
  RSA610222  Cuscuta salina Fred M. Roberts, Julie Vanderwier 1997-4-29 5020 Orange Bolsa Chica Salt Marsh (US Fish & Wildlife Service cell 17); west of old oil field, 1.17 km. SSE Chica Survey Mark. 0 Comment
  CDA2109  Cuscuta subinclusa D. G. Kelch 2006-12-9 6 .558 Orange Irvine. University Dr along tidal creek just E of I-73. 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
  RSA266  Cycloloma atriplicifolium J. T. Howell 1928-5-13 968 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  UCR108380  Cycloloma atriplicifolium L. C. Wheeler 1946-9-28 6377 Orange Newport Bay: Near Point where main coast highway [Hwy 1?]crosses 2 Comment
  CDA7766  Cyclospermum leptophyllum David Armstrong 2008-4-6 PDR# 1255936 Orange Orange, 2809 E. Hillside Ave. 0 Comment
  RSA761940  Cyclospermum leptophyllum Robt. Allen, Edward Read 2005-10-20 12531 Orange Fullerton, campus of California State University. West end of Science Laboratory Center building, in garden adjacent to Perimeter Road. 72 Comment
  RSA716731  Cylindropuntia prolifera Fred M. Roberts, D. E. Bramlet 2004-11-5 6129 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, west slopes of Cristianitos Cyn., 0.79 km N Sycamore Gate and 0.18 km W Cristianitos Road. 146 Comment
  RSA743475  Cylindropuntia prolifera Fred M. Roberts, Carol A. Roberts 2008-9-28 7117 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  UCR224166  Cylindropuntia prolifera Fred M. Roberts, Carol A. Roberts 2008-9-28 7117 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8 km west northwest of Marine Institute, Dana Point Harbor 65 Comment
  IRVC14840  Cynara cardunculus B. Newman 1965-3-14 Orange Dana Point Comment
  UCR48039  Cynara cardunculus Jack Easton 1987-4-21 s.n. Orange Southern Coast, Kain property, San Clemente, mouth of Trafalgar Canyon, just behind the beach 30 Comment
  RSA758901  Cynara cardunculus subsp. flavescens A. C. Sanders, Fred M. Roberts 2008-6-17 35474 Orange Lomas de Santiago, East Loma Ridge Spur Road near Hicks Cyn. Haul Rd. 353 Comment
  CAS-BOT-BC190297  Cynodon dactylon Ira L. Wiggins 1965-9-26 20253 Orange In Carbon Canyon about 3.5 miles above its mouth. Comment
  IRVC29808  Cynodon dactylon Laura D. Lyons, Mark A. Elvin 2006-9-23 422 Orange San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; SW edge, along San Diego Creek, N of University Drive, E Hwy 73. Southern Coastal 2 Comment
  UCSC000021  Cynodon dactylon I. J. Condit 2008-7-20 s.n. Orange Los Alamitos Comment
  RSA47  Cynodon dactylon J. T. Howell 1927-7-27 488 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  JEPS64090  Cyperus eragrostis L. M. Booth 1932-5-15 1201 Orange Costa Mesa Comment
  POM201509  Cyperus eragrostis L. M. Booth 836 Orange Santa Ana Canyon. Comment
  RSA0028026  Cyperus eragrostis Fred M. Roberts 2012-9-6 7699 Orange San Joaquin Hills: Buck Gully, Buck Gully Trail, west end near Poppy Street entrance, 2.1 kilometers WNW Pelican Hill summit. 37 Comment
  RSA92102  Cyperus esculentus F. W. Peirson 1923-9-6 4032 Orange Along canal east of Olive. Comment
  SD28115  Cyperus laevigatus Carl B. Wolf 1932-7-2 3814 Orange Carbon Canyon ; 0.125 mile below La Vida Springs; edge of small watercourse. 213 Comment
  UC729960  Cyperus laevigatus Carl B. Wolf 1932-7-2 3814 Orange 1/8 mi. below La Vida Springs (Carbon Canyon); Carbon Canyon 213 Comment
  RSA488144  Cyperus laevigatus Fred M. Roberts, Gordon Marsh 1985-10-31 2533 Orange Santa Ana River: adjacent to Huntington Beach, 0.2 kilometers S [of] Adams Street bridge. 4 Comment
  CAS-BOT-BC113820  Cyperus niger var. capitatus John Thomas Howell 1927-7-19 2800 Orange Santa Ana River Bottom, Santa Ana Canyon. 152 Comment
  RSA800666  Cyperus odoratus Justin M. Wood 2010-9-29 2744 Orange Santa Ana Canyon: Santa Ana River, southwest of Green River Golf Course and north of Hwy 91 and Santa Ana River Trail. 128 Comment
  UCR179773  Cyperus odoratus R. E. Riefner Jr. 2005-10-27 05- 728 Orange South Coast, Huntington Beach, Huntington Central Park near Goldenwest St. 1 Comment
  UCR207811  Cyperus odoratus O. F. Clarke 2004-8-23 s.n. Orange Santa Ana River Valley, Yorba Linda, Yorba Regional Park, Santa Ana River bank near intersection of E. La Palma Ave. and Fairmont Blvd. 91 Comment
  RSA92111  Cyperus odoratus F. W. Peirson 1924-10-19 2532 Orange Wintersberg Comment
  SD248281  Cyrtomium falcatum R. E. Riefner 2011-7-7 11 87 Orange City of Dana Point, S of Mussel Cove, N of Salt Creek Beach Park. 4 Comment
  UCD170386  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-16 12- 5 Orange City of Newport Beach, Corona Del Mar, beach area west of Morning Canyon Road. 1 Comment
  UCR182824  Cyrtomium falcatum R. E. Riefner Jr. 2006-9-5 06- 417 Orange Southern Coast, Corona del Mar, Ocean Blvd. near Iris Ave. 11 Comment
  UCR246478  Cyrtomium falcatum R. E. Riefner Jr. 2011-7-7 11- 87 Orange city of Dana Point, south of Mussel Cove, north of Salt Creek Beach Park 9 Comment
  SD28072  Dactylis glomerata Carl B. Wolf 1932-6-13 3715 Orange Fullerton, Rose Drive 53 Comment
  UCR193769  Dactylis glomerata A. C. Sanders 2008-7-3 35717 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Agustine Staging Area 260 Comment
  CDA20218  Dactyloctenium aegyptium R. Tiffer 2003-9-4 PDR 1256123 Orange Southwestern California; Santa Ana River bank in Anaheim. 0 Comment
  RSA734877  Datisca glomerata Keith E. Hoffmaster 1934-5-13 172 Orange Santa Ana Mountains Comment
  IRVC27503  Datura stramonium Mark A. Elvin 2004-5-2 3417 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA17044  Datura wrightii Carl B. Wolf 1936-1-13 7694 Orange Santa Ana Canyon, Rancho Santa Ana, along R. R. right of way east of Ranch Houses. 137 Comment
  RSA421914  Datura wrightii N. C. Cooper 1942-11-9 886 Orange Balboa. Comment
  UCR224158  Datura wrightii Fred M. Roberts 2008-7-10 7075 Orange South Coast, Dana Point Headlands, CNLM Preserve, near Outlook 2, 0.7 km west of Marine Institute, Dana Point Harbor 52 Comment
  POM48016  Datura wrightii I. M. Johnston 1924-8-29 s.n. Orange 1 mi. N of Los Alamitos. Comment
  UC566880  Daucus pusillus H. L. Mason 1926-4-25 2934 Orange 5 mi. s. Laguna Comment
  UCR217459  Daucus pusillus Mark A. Elvin 2003-3-30 2383 Orange South Coast, north side of UC Irvine Preserve, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  UCR228804  Daucus pusillus Dick Newell, Don Millar 2011-5-24 165 Orange Peninsular Range; Santa Ana Mtns., above Outdoor Education Center on MWD service road, 1.6 miles NW (311 deg. ) of Irvine Lake dam 244 Comment
  UC536895  Deinandra fasciculata Lawrence M. Booth 1932-5-12 1038 Orange Newport Bay Comment
  CAS-BOT-BC299325  Deinandra fasciculata Louis C. Wheeler 1932-6-25 861 Orange Bluff overlooking Newport Bay 7 Comment
  SBBG80998  Deinandra fasciculata G. Sampson 1985-4-23 85 -362 Orange dry ridge W end of Telegraph Cyn Comment
  CAS-BOT-BC131026  Deinandra paniculata John Thomas Howell 1931-6-1 6626 Orange San Clemente Comment
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Oct 4 2017
  CAS-BOT-BC383062  Deinandra paniculata R. E. Riefner, Jr. 2008-5-19 08 -101 Orange Ladera Ranch, Cecil Pasture at Jerome Rd. 157 Comment
  UCR252705  Deinandra paniculata R. E. Riefner Jr. 2014-8-10 14- 279 Orange South Coast, city of San Clemente, Rancho San Clemente Trail, east c. 0.15 mi from Ave Salvador, and south c. 0.2 mi off Utility Access Road 202 Comment
  CAS-BOT-BC9090  Delphinium cardinale Carl B. Wolf 1932-7-2 3821 Orange Carbon Canyon, 1/8 mile below La Vida Springs 213 Comment
  UCR231162  Delphinium cardinale Dick Newell, Judy Booth 2011-6-26 193 Orange Peninsular Range; Santa Ana Mtns., Long Canyon Rd., NW of Hwy 74, Cleveland National Forest 965 Comment
  RSA683075  Delphinium parryi Scott D. White, Amanda Duchardt 2003-5-1 9154 Orange Santa Ana Mtn Foothills; slopes above the west side of Canada Gobernadora and adjacent small canyon to the west. 76 Comment
  UCR261685  Delphinium parryi Dick Newell, Judy Booth 2014-5-25 375 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Maple Springs Rd./Silverado Canyon Rd., 1.8 miles due north of Modjeska Peak 893 Comment
  CAS-BOT-BC121418  Delphinium parryi subsp. parryi LeRoy Abrams 1901-6-1 1818 Orange Santiago Peak trail. 304 Comment
  RSA679218  Delphinium parryi subsp. parryi Fred M. Roberts 2003-6-17 5915 Orange Just NE of Falcon roup Camp, 2.1km ESWE Los Pinos Peak just west of main road. 1009 Comment
  UCR18228  Delphinium patens Richard B. Flagler 1975-5-2 s.n. Orange Silvarado Canyon Comment
  RSA400033  Delphinium patens subsp. hepaticoideum Albert J. Perkins 1913-4-19 s.n. Orange Trabuco Canyon. Comment
  RSA594894  Delphinium patens subsp. hepaticoideum Fred M. Roberts, Sandy Leatherman, B. Leatherman 1994-4-24 4907 Orange San Juan Canyon, south side of Calif. Route 74, 1.2 km SW Lower San Juan Picnic Ground. 390 Comment
  CAS-BOT-BC43190  Descurainia pinnata subsp. brachycarpa Carl B. Wolf 1932-3-8 2681 Orange 0.5 mile north of Corona Del Mar. Borders of Newport Bay. 7 Comment
  UCR130486  Descurainia pinnata subsp. halictorum R. E. Riefner Jr. 1999-5-22 99- 291 Orange South Coast, city of Dana Point, west of Pacific Coast Hwy, vicinity of Salt Creek Park and Ritz Carlton Hotel 15 Comment
  UCR215308  Descurainia pinnata subsp. halictorum Fred M. Roberts, Eliza L. Maher 2008-3-26 6797 Orange South Coast, Dana Point; Dana Point Headlands, Center for Natural Lands Mgmt. Preserve near Strands Road gate, 0.8 km west of Marine Institute, Dana Point Harbor 71 Comment
  RSA16418  Dicentra chrysantha Percy C. Everett 1935-5-19 6870 Orange Santa Ana Mountains, Baker Canyon, West Ladd Truck trail. 305 Comment
  RSA725576  Dicentra chrysantha Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6538 Orange Upper Fremont Canyon, 5.2 km ENE Irvine Lake Spillway and 2.0 km WNW Hidden Ranch. 673 Comment
  UCR231163  Dicentra chrysantha Dick Newell, Judy Booth 2011-6-26 194 Orange Peninsular Range; Santa Ana Mtns., Long Canyon Rd., NW of Hwy 74, Cleveland National Forest 965 Comment
  RSA761799  Dicentra chrysantha Robt. Allen 2003-6-22 12293 Orange Northwest-facing flank of Santiago Peak, along North Main Divide Road. 1556 Comment
  RSA737543  Dichelostemma capitatum subsp. capitatum Fred M. Roberts 2008-3-12 6718 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA590942  Dichelostemma capitatum subsp. capitatum Fred M. Roberts Jr. 1991-5-2 4782 Orange San Joaquin Hills: Laguna Canyon, Laguna Laurel, just W of Laguna Canyon Road, ca 2 km N jct El Toro Road, 4.5 km E Signal Peak. 110 Comment
  RSA698094  Dichelostemma capitatum subsp. capitatum Minor Warne 1934-03 s.n. Orange Laguna Hills. Comment
  SEINET10719725  Dicksonia David B. Dunn 1971-8-13 Dunn 18125 Orange Cultivated plants vicinity of Laguna Beach. Comment
  RSA0029994  Dimorphotheca fruticosa R. E. Riefner Jr. 2011-7-1 11 -79 Orange City of Newport Beach, beach area W. of Shorecliff Road and Cameo Shores Road. 2 Comment
  SD237346  Dimorphotheca fruticosa Mark A. Elvin 2003-2-23 2315 Orange South Coast: Irvine, San Joaquin Marsh along the berm of San Diego Creek. 3 Comment
  RSA708441  Diospyros lycioides subsp. lycioides Mark Elvin 2004-5-2 3418 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
  RSA0045519  Diplacus puniceus Minor Warne 1934-3-3 s.n. Orange Laguna Canyon Forks. CP5. Comment
  CAS-BOT-BC43561  Diplotaxis tenuifolia Helen D. Geis 1902-1-1 544 Orange Santa Ana. Comment
  JEPS53464  Diplotaxis tenuifolia Ethelbert Johnson 1929-8-29 Orange Santa Ana Comment
  RSA696324  Distichlis spicata Keith E. Hoffmaster 1927-5-22 s.n. Orange Santa Ana. Comment
  UCSB44176  Distichlis spicata Henneman, J. 1977-5-21 Orange Newport Back Bay Comment
  RSA461342  Dodecatheon clevelandii M. B. Dunkle 1935-3-3 4344 Orange San Juan Canyon. 457 Comment
  RSA461343  Dodecatheon clevelandii Albert J. Perkins 1913-3-6 s.n. Orange San Juan Hot Springs Comment
  RSA542459  Dodecatheon clevelandii Fred M. Roberts 1988-3-15 3863 Orange Rancho Mission Viejo: Upper Gabino Canyon, 4.1 km SE Point Rancho Survey Marker. 191 Comment
  RSA699298  Dodecatheon clevelandii Jeanne Paxton 1934-2-25 s.n. Orange Sugar Loaf Canyon, Arch Beach Comment
  SEINET10745208  Dolichandra unguis-cati Peter H. Raven 2009-8-29 Raven 28669 Orange Irvine, SE corner of intersection of Jamboree and MacArthur. Comment
  RSA16495  Drymocallis glandulosa Percy C. Everett 1935-6-18 7212 Orange Santa Ana Mts: Summit of Santiago Peak. 1732 Comment
  RSA732165  Drymocallis glandulosa A. C. Sanders, Fred M. Roberts 2008-4-8 34762 Orange Peninsular Range; Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd. 457 Comment
  RSA722384  Drymocallis glandulosa var. wrangelliana Mabel Harvey s.n. Orange Trabuco Canyon. Comment
  IRVC22504  Dryopteris arguta Fred M. Roberts 1985-5-1 1698 Orange Aliso Canyon, 2.1km NNE Aliso Peak, Aliso Viejo 67 Comment
  RSA703678  Dryopteris arguta D. E. Bramlet 2003-5-1 3426 Orange Donna O'Neill Reserve. Ephemeral drainage north of the North Ridge trail 457m west of Cristianitos Rd. and 1.07 km north of the E-W access road. 128 Comment
  RSA704080  Dryopteris arguta D. E. Bramlet, Fred Roberts 2003-5-1 3426 Orange Donna O'Neill Reserve. Ephemeral drainage north of the North Ridge trail 457m west of Cristianitos Rd. and 1.07 km north of the E-W access road. 128 Comment
  UCSB48105  Dryopteris arguta Fritzke, S.; Roberts, Fred 1982-4-3 Orange Santa Ana Mtns.: San Juan Canyon, 2.4km ENE San Juan Guard Station; 0.3km WSW Bench Mark 1100. 88 Comment
  UC905133  Dudleya R. V. Moran 1948-6-23 3097 Orange n-facing cliff near mouth of Aliso Canyon (s of Laguna Beach); ; near mouth of Aliso Canyon, S of Laguna Beach, Orange Co. 7 Comment
  UCR159829  Dudleya cymosa Valerie Soza, LeRoy Gross 1999-6-7 473 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 Comment
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Jun 15 2013
  RSA629057  Dudleya cymosa subsp. ovatifolia Valerie L. Soza, LeRoy Gross 1999-6-7 473 Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
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May 26 2016
  RSA423526  Dudleya edulis M. B. Dunkle 1923-06 5374 Orange San Juan Canyon. Comment
  RSA542641  Dudleya edulis Jeni L. Roberts, K. Keane 1988-5-25 3981 Orange Rancho Mission Viejo; Lower Canada Chiquita, 2.5 km SSE Medium Rancho Survey Mark; 105 Comment
  JEPS49887  Dudleya lanceolata John Thomas Howell 1927-7-3 2637 Orange Claymine Canyon Santa Ana Mtns 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
  RSA743454  Dudleya lanceolata Fred M. Roberts 2008-7-10 7074 Orange Dana Point: Dana Point Headlands, CNLM Preserve, along north slopes above Dana Strand Beach, 0.8km WNW Marine Institute, Dana Point Harbor. 45 Comment
  RSA542535  Dudleya multicaulis Fred M. Roberts, K. G. Marsh, G. A. Marsh 1988-4-26 3943 Orange San Joaquin Hills: Pelican Hill, 0.6 km SE summit. 172 Comment
  RSA682920  Dudleya multicaulis Scott D. White, Amanda Duchardt 2003-5-1 9148 Orange Santa Ana Mtn Foothills; slopes above the west side of Canada Gobernadora and adjacent small canyon to the west. 76 Comment
  UC933212  Dudleya multicaulis Reid Moran 1950-4-24 3387 Orange 0.4 mi above El Toro road junction with Laguna Canyon road (s of El Toro road, Laguna Canyon); Laguna Canyon 91 Comment
  UC1015432  Dudleya pulverulenta subsp. pulverulenta Jack Whitehead 1946-6-12 396 Orange Dana Point Comment
  CAS-BOT-BC109742  Dudleya stolonifera R. V. Moran 1949-7-2 3287 Orange Near mouth of Aliso Canyon, south of Laguna Beach. Comment
  NY24581  Dudleya stolonifera R. V. Moran 1949-7-2 3286 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
  CAS-BOT-BC109743  Dudleya stolonifera R. V. Moran 1949-7-2 3286 Orange 1.7 mile below Toro Road Junction, -1.5 mile above canyon mouth. Laguna Canyon. 243 Comment
  IRVC28635  Dudleya viscida Mark A. Elvin 2005-9-2 4490 Orange Santa Ana Mtns: along San Juan Creek, ca. 1.0km upstream from San Juan Hot Springs; off Ortega Hwy (74), near bridge. Peninsular Ranges 259 Comment
  UCR219856  Echinochloa colona Fred M. Roberts 2008-6-3 7031 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, East Fork Rattlesnake Canyon, c. 2.6 km NE Rattlesnake Reservoir spillway and 2.4 km ENE Bee Peak 225 Comment
  CAS-BOT-BC197175  Echinochloa crus-galli Carl B. Wolf 1932-6-13 3720 Orange Fullerton, Malvern & Nicholas Aves. 53 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
  SEINET8073925 Image available Echinochloa crus-galli R. E. Riefner Jr. 2005-1 05 -552 Orange City of Huntington Beach, Huntington Central Park, Goldenwest St. near Slater Ave. USGS Quad: Seal Beach. 2 Comment
  UCD60823  Echinochloa crus-galli Beecher Crampton 1965-10-27 7584 Orange 2 miles E of Irvine, UC South Coast Field Station. Comment
  UCD60916  Echinochloa crus-galli Ira L. Wiggins 1965-9-26 20261 Orange Roadside at west end of Orangethorpe Estates subdivision, near Atwood. Comment
  UCR207803  Echinochloa crus-pavonis 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
  JEPS45892  Echinochloa muricata Lawrence M. Booth 1932-7-25 1314 Orange Santa Ana River Channel near Coast Comment
  UCR207559  Echinodorus berteroi O. F. Clarke 2004-7-19 s.n. Orange South Coast, Talbert Regional Park, Costa Mesa, at end of 19th St. 3 Comment
  SEINET10456473  Echium Chester T. Dziekanowski, David B. Dunn; Charlene A. Bennett 1976-7-21 Dziekanowski 2416 Orange Collected around the condominium-Pacific Island Estates in Laguna Niguel. Comment
  SEINET10753656  Ehrharta calycina Scott D. White, M. Honer 2003-6-12 White 9542 Orange Southwestern Santa Ana Mts Foothills: Rancho Mission Viejo. Upper end of Trampas Canyon. (San Clemente.) 152 Comment
  RSA731651  Ehrharta erecta Fred M. Roberts 2007-10-29 6628 Orange Laguna Beach: Temple Hill, Nyes Place, c.a. 0.2 km S Moulton Meadows Park. 232 Comment
  UC455131  Eleocharis montevidensis I. J. Condit 1908-7-21 Orange Los Alamitos Comment
  RSA588792  Eleocharis montevidensis var. montevidensis Fred M. Roberts, D. Bontrager 1990-4-18 4569 Orange Rancho Mission Viejo: Canada Chiquita, east side of canyon near mouth, 2.7 kilometers SSE Median Rancho Survey Marker; UTM Z11 37 10 000N, 4 43 800m E 79 Comment
  RSA0027434  Eleocharis palustris Fred M. Roberts 2012-7-18 7674 Orange San Joaquin Hills: Newport Beach, Buck Gully, Buck Gully Trail, west end, just east of north terminus, of Poppy Street and 2.1 km WNW summit of Pelican Hill. 37 Comment
  RSA799616  Eleocharis palustris Justin M. Wood 2011-4-12 3661 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  UC971749  Eleocharis radicans L. M. Booth 1932-7-19 1286 Orange Bolsas Creek Comment
  RSA5828  Elymus X gouldii C. B. Wolf 1932-6-28 3794 Orange Bryant Ranch, north boundary of field. 9 Comment
  UCR207543  Elymus condensatus O. F. Clarke, Roger E. Reinke 2004-11-14 s.n. Orange South Coast, Newport Back Bay 3 Comment
  UCSB47967  Elymus glaucus Roberts, Fred 1980-5-3 Orange Main Divide Truck Trail; 2.0km WNW of Trabuco Peak; Santa Ana Mountains 1234 Comment
  POM50709  Elymus glaucus subsp. glaucus Le Roy Abrams 1901-06 1822 Orange Santiago Peak Trail 915 Comment
  RSA548858  Elymus multisetus Fred M. Roberts, Gordon Marsh 1986-6-6 2986 Orange Black Star Canyon, Black Star Canyon Rd., 2.7 km by road below summit; 3.6 km S Sierra Peak., UTM 3741900m N, 439600mE. 646 Comment
  RSA548877  Elymus multisetus Fred M. Roberts, K. Keane 1988-5-25 4583 Orange Rancho Mission Veijo: Lower Canada Chiquita, 2.0 kilometers SSE Medium Rancho Survey Marker., UTM 3710600m N, 443550m E. 91 Comment
  RSA610  Emmenanthe penduliflora J. T. Howell 1927-6-9 72 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  RSA734990  Emmenanthe penduliflora A. C. Sanders, Fred M. Roberts, Amber O Neal 2008-5-9 35280 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir. 300 Comment
  RSA0127347  Emmenanthe penduliflora var. penduliflora Fred M. Roberts 2016-4-29 8050 Orange Lomas de Santiago: north of Santiago Canyon Road, southwest slope of hill marked 1332 on topo maps, just west of Irvine Lake, 1.6 km S Irvine Lake dam spillway and 0.8 km NW Irvine Lake Park. 335 Comment
  RSA407878  Encelia actoni B. Busenberg, Walter Wisura 1987-7-23 4171 Orange Newport Bay at jct of Back Bay Drive and San Joaquin Hills Road Comment
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Nov 11 2020
  IRVC648  Encelia californica D. Van Gorden 1965-4-12 Orange 17th Street. Costa Mesa Comment
  POM122763  Encelia californica Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  POM202371  Encelia californica L. M. Booth 1932-5-12 1029 Orange Newport Bay. Comment
  RSA0073641  Encelia californica Fred M. Roberts 2010-3-12 7177 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
  RSA221019  Encelia californica E. W. Lathrop 1966-3-23 6082 Orange Skyline Drive between Tin Mine Canyon and Black Star Canyon, 6 miles W of Corona, Santa Ana Mts. 427 Comment
  RSA749287  Encelia californica Fred M. Roberts, David E. Bramlet 2008-4-1 6835 Orange Lomas de Santiago: Loma Ridge, Upper Hicks Cyn. along Haul Road, 1.0 km NNW Bee Peak, Irvine Ranch Conservancy. 341 Comment
  UC536898  Encelia californica Lawrence M. Booth 1932-5-12 1029 Orange Newport Bay Comment
  UCR191222  Encelia californica A. C. Sanders 2008-4-29 35128 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  UCR191328  Encelia californica A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34611 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
  UCR192476  Encelia californica A. C. Sanders, Fred M. Roberts 2008-3-25 34544 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR223422  Encelia farinosa Dick Newell, Don Millar 2011-3-1 068 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  POM201878  Epilobium ciliatum subsp. ciliatum L. M. Booth 1932-6-4 1145 Orange Newport Lagoon. Comment
  RSA666103  Epilobium pygmaeum Fred M. Roberts, Michelle Lee 2001-6-4 5487 Orange Rancho Mission Viejo: Chiquita Ridge, 0.3km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. (Canada Gobernadora. 226 Comment
  RSA790023  Equisetum arvense R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49566 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  IRVC25079  Equisetum hyemale subsp. affine Karlin G. Marsh 1989-6-20 Orange Santa Ana mtns: Santiago Canyon, Fleming Park above Modjeska, ca 3.0km WSW Laurel Springs. Peninsular Ranges 440 Comment
  RSA21057  Equisetum laevigatum Ramon Valverde 1938-8-4 9447 or 3235 Orange Rancho Santa Ana, Santa Ana Canyon. 122 Comment
  UC1543090  Equisetum laevigatum Donald G. Nelson 1935-4-6 266 Orange e San Juan Capistrano (canyon 200-300 ft below main Hwy., ca. 4 mi from Summit); Santa Ana Mts., San Juan Canyon Comment
  POM50293  Equisetum laevigatum Helen D. Gris 1902-11 s.n. Orange Peat Louds Comment
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Aug 8 2013
  UCR69742  Eragrostis pectinacea var. pectinacea Tim Hartz 1990-11-19 s.n. Orange Irvine U.C. South Coast Field Station, near the U.C. Irvine Campus. Comment
  RSA0122937  Eriastrum sapphirinum A. C. Sanders, Fred M. Roberts 2008-6-17 35505 Orange Weir Canyon, Windy Ridge Rd., saddle on ridge at head, above the Eastern Transportation Corridor. 400 Comment
  UCR241914  Eriastrum sapphirinum Fred M. Roberts 2012-5-10 7564 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
  RSA0122940  Eriastrum sapphirinum subsp. dasyanthum D. E. Bramlet 2008-6-3 4286 Orange Upper Borrego Cyn, 136m SE of the access road and 1.5km west of Santiago Cyn Road 433 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
  SD95145  Ericameria pachylepis Jack Reveal 1973-12-4 Orange On ridge between east and west forks of Ladd Canyon; 1.75 miles northeast of Mustang Spring. 650 Comment
  CAS-BOT-BC299502  Ericameria palmeri var. pachylepis Carl B. Wolf 1931-10-30 1363 Orange North side of Santa Ana Canyon 207 Comment
  RSA16663  Ericameria palmeri var. pachylepis C. B. Wolf 1931-10-30 2504 Orange Rancho Santa Ana, Santa Ana Canyon. 207 Comment
  RSA16676  Ericameria palmeri var. pachylepis C. B. Wolf 1931-10-30 2504 Orange Rancho Santa Ana, Santa Ana Canyon. 207 Comment
  RSA785321  Ericameria palmeri var. pachylepis Dick Newell, Don Millar, Michael Dresser 2010-9-21 034 Orange access road on east side of Laguna Canyon Rd. at Stage Coach, 1.22 miles north of Hwy 73 toll road 111 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
  CAS-BOT-BC294347  Ericameria palmeri var. palmeri Scott White 1992-10-1 950 Orange Vicinity of city of Brea, immediately N of Carbon Canyon Road & E of Placentia Avenue. +-1 mi. (airline) S/SE of Tonner Canyon 182 Comment
  LA202522  Ericameria parishii var. parishii David S. Verity; 1966-11-23 sn Orange Santa Ana Mountains, Los Pinos Peak, near peak 1219 Comment
  POM357495  Erigeron foliosus var. stenophyllus M. B. Dunkle 1933-5-30 3578 Orange Santa Ana Canyon Comment
  CAS-BOT-BC402191  Eriodictyon crassifolium R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49682 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 457 Comment
  RSA171104  Eriodictyon crassifolium Robert F. Thorne 1963-7-26 32836 Orange Tin Mine Canyon above Beek s Spring, Trabuco District, Cleveland National Forest 854 Comment
  SD70811  Eriodictyon crassifolium Lucille Kempers 1953-5-1 39 Orange Coal Canyon 395 Comment
  UC171023  Eriodictyon crassifolium H. M. Hall 1913-5-28 9402 Orange Santiago Canyon Comment
  SEINET10697903  Eriodictyon crassifolium var. crassifolium Karen M. Meyer, Andrew Townesmith; Tracy Scott 2007-3-10 Meyer 1 Orange Cleveland National Forest, 0.5 mi. N. Main Divide Rd./NF3S04, off Hwy. 74. Elsinore Mountains, ridge top. 917 Comment
  UCR192086  Eriodictyon crassifolium var. crassifolium A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35298 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  RSA731762  Eriogonum elongatum Fred M. Roberts, Sandy Leatherman 2007-11-9 6644 Orange San Juan Canyon along San Juan Creek. 0.2 km E community of San Juan Hot Springs. 222 Comment
  RSA7477  Eriogonum elongatum Carl B. Wolf 1933-8-24 5401 Orange Summit of Santiago Peak, Santa Ana Mountains. 1732 Comment
  UCR250138  Eriogonum elongatum Dick Newell, Judy Booth 2013-12-25 347 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, Cleveland National Forest, at end of paved roadway 899 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
  SEINET182348  Eriogonum fasciculatum Lawrence M. Booth 1932-5-18 1057 Orange Newport bay Bluff Slopes Comment
  RSA649079  Eriogonum fasciculatum subsp. fasciculatum Karl Price 1988-4-28 10 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
  RSA737540  Eriogonum fasciculatum var. fasciculatum Fred M. Roberts 2008-3-12 6721 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  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
  SEINET6418403  Eriogonum fasciculatum var. fasciculatum Lott, Velasco, Pinkava 1966-8-22 2557 Orange 1/2 miles south of Dana Point Comment
  CAS-BOT-BC249944  Eriogonum fasciculatum var. foliolosum John Thomas Howell 1927-7-24 2835 Orange Santa Ana Canyon 152 Comment
  CAS-BOT-BC249946  Eriogonum fasciculatum var. foliolosum John Thomas Howell 1927-6-1 2407 Orange Southern Puente Hills in the Santa Ana Canon [Canyon] 152 Comment
  RSA393426  Eriogonum fasciculatum var. foliolosum F. R. Fosberg 1931-6-21 S 5155 Orange Carbon Canyon, Punete Hills. Comment
  SEINET11946392  Eriogonum fasciculatum var. foliolosum S. A. Thompson, Rawlins, J. E. 1988-8-27 5266 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  UC1032083  Eriogonum fasciculatum var. polifolium A. Lewis May 1934 218 Orange Trabuco Canyon Cleveland (National Forest), Elsinore Quadrangle, Trabuco Ca Comment
  CAS-BOT-BC257874  Eriogonum parvifolium David D. Keck 1932-9-30 1904 Orange 2 mi. W. of Laguna Beach Comment
  RSA539351  Eriogonum saxatile Fred M. Roberts 1988-6-10 4097 Orange Santa Ana Mountains: Modjeska Peak, 0.9km SW summit. 1542 Comment
  RSA7392  Eriogonum wrightii var. subscaposum Carl B. Wolf 1933-8-24 5404 Orange Summit of Santiago Peak, Santa Ana Mountains. 1732 Comment
  CAS-BOT-BC297325  Eriophyllum confertiflorum R. K. Brummitt; et al. 1998-5-23 19989 Orange Newport Beach, by marina; by harbour entrance 10 Comment
  HSC5622  Eriophyllum confertiflorum S. M. Clapp 1966-4-7 45 Orange 3 mi. from Modjeska Canyon towards Siverado Canyon 183 Comment
  SEINET3386759 Image available Eriophyllum confertiflorum F. M. Reed 1925-5-14 4978 Orange Aliso Canyon. 30 Comment
  UCR230227  Eriophyllum confertiflorum Dick Newell, Don Millar 2011-3-15 083 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash along Limestone Cyn. Rd. 252 Comment
  IRVC15665  Eriophyllum confertiflorum var. confertiflorum A. S. Boughey, P. Pembrook 1965-6-18 1018 Orange Los Trancos Canyon at bottom, ; chaparral. San Joaquin Hills Comment
  IRVC707  Eriophyllum confertiflorum var. confertiflorum A. S. Boughey, P. Pembrook 1965-6-18 1018 Orange Los Trancos Canyon at bottom, ; chaparral. San Joaquin Hills Comment
  RSA590950  Erodium botrys Fred M. Roberts 1991-5-2 4774 Orange San Joaqui Hills, Laguna Canyon, Laguna Laurel, Just W of Laguna Canyon Road, 2km N jct El Toro Road, 4.5km E Signal Peak. 110 Comment
  RSA649073  Erodium cicutarium Karl Price 1988-4-29 9 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  SD152833  Erodium moschatum Steve Boyd, Tim Ross 1992-5-19 7415 Orange Santa Ana Mts, San Mateo Canyon Wilderness Area. W. edge of wilderness along Lucas Canyon Trail from access road to Rcho Carrillo 7S06 N into Aliso Canyon Comment
  RSA651367  Erysimum capitatum Bob Cochrane 1948-5-9 s.n. Orange Found in hills back of Yorba Linda. Comment
  IRVC22653  Erysimum capitatum L. Orsak 1973-5-10 Orange Upper Santiago Canyon, top of Joplin Trail, Santa Ana Mountains 1483 Comment
  SD77331  Erythranthe guttata F. W. Pennell, Carl Epling 1940-4-21 25152 Orange wet stream sides, Route 74, 5 miles east of San Luis Capistrano 60 Comment
  RSA0069234  Eschscholzia californica Fred M. Roberts, Lee Ann Caranza 2009-4-7 7139 Orange Dana Point Headlands: Dana Point CNLM Preserve, 0.8 km WNW Dana Point Marine Institute at Dana Point Harbor. 65 Comment
  UCR192999  Eschscholzia californica A. C. Sanders, T. B. Salvato 2008-5-13 35379 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
  RSA722437  Eschscholzia californica Unspecified s.n. Orange Santa Ana Comment
  RSA0010852  Eucalyptus camaldulensis var. obtusa D. Goodward 1987-4-16 6 Orange Irvine Ranch, E of Tustin and ca. 1 mile NE of the Irvine Blvd/Myford Rd. intersection in Peters Canyon. 122 Comment
  UCR266293  Eucalyptus polyanthemos D. E. Bramlet 2007-3-26 4056 Orange Chino Hills, Tonner Canyon 183 Comment
  POM50213  Eucrypta chrysanthemifolia Helen D. Geis 1902-1 513 Orange Santiago Creek. Comment
  RSA420830  Eucrypta chrysanthemifolia Geo. L. Moxley 1917-04 184 Orange Laguna Beach Comment
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Sep 22 2011
  UCR250854  Eucrypta chrysanthemifolia Dick Newell, Don Millar 2014-4-15 361 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Agua Chinon wash at the lower gate next to the 241 toll road 328 Comment
  SBBG40450  Eucrypta chrysanthemifolia var. chrysanthemifolia J. Ingram 1960-3-29 265 Orange 2 mi above O'Neill Park, Trabuco Cyn Comment
  IRVC24273  Euphorbia albomarginata Fred M. Roberts, G. A. Marsh 1985-10-26 2527 Orange Santa Ana River: adjacent to Huntington Beach; 0.7km SSW Adams Street bridge. southern coastal 4 Comment
  CAS-BOT-BC202545  Euphorbia misella Joseph Andorfer Ewan 1932-7-28 7708 Orange Corona del Mar Comment
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Oct 29 2020
  RSA432  Euphorbia misera J. T. Howell 1928-6-24 992 Orange Between Laguna and Capistrano Beaches Comment
  UCR222625  Euphorbia misera T. B. Salvato 2010-10-27 5106 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
  UCR240174  Euphorbia misera R. E. Riefner Jr. 2012-10-16 12- 518 Orange South Coast, city of Dana Point, Dana Point Harbor, 'Bluff Top Trail' located near Camino Capistrano and Violet Lantern Streets 35 Comment
  UCR247411  Euphorbia nutans Roger E. Reinke 2013-11-3 s.n. Orange Santa Ana, 12782 Bubbling Well Rd. 41 Comment
  UCR103162  Euphorbia peplus Scott D. White 1997-3-28 4849 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  UCR103788  Euphorbia peplus Scott D. White 1997-2-19 4693 Orange Santa Ana Mtns, above Modjeska Canyon; proposed water tank site 488 Comment
  UCR193788B  Euphorbia polycarpa A. C. Sanders, Fred M. Roberts 2008-7-3 35692 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Windy Ridge Rd. at hairpin turn/road junction below huge sandstone boulder (visible on Google Earth), 1.2 mi. SE of Walnut Canyon Reservoir 285 Comment
  SEINET12142111  Euphorbia polycarpa J. F. Bright, Wyman, C. 1933-1 8091 Orange In Santa Ana Foothills Comment
  UCR239867  Euphorbia serpens O. F. Clarke 2004-4-5 s.n. Orange South Coast, Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach 4 Comment
  IRVC23251  Euphorbia serpyllifolia var. hirtula K. Kirtland 1987-8-25 Orange Santa Fe Channel along Edinger Ave.; disturbed flood channel with flowing water, sandy soil. Tustin Comment
  RSA392120  Eustoma exaltatum Theodore Payne 1925-08 s.n. Orange 9 miles E of Florentia, Santa Ana river. Comment
  RSA723485  Euthamia occidentalis R. E. Riefner 2006-11-12 06 -666 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
  RSA696043  Felicia amelloides Anonymous 1933-10-13 s.n. Orange Santa Ana Comment
  UCR193048  Festuca arundinacea A. C. Sanders, Mitch Provance 2008-5-20 35410 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  UCR267214  Festuca octoflora var. octoflora Fred M. Roberts, Lee Ann Caranza & Eliza Maher 2009-4-7 7145 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
  CAS-BOT-BC500432  Ficus microcarpa R. E. Riefner, Jr. 2015-7-18 15 -198 Orange City of Costa Mesa, Anton Blvd. on ramp to 405 Freeway, ca 0.3 mi from intersection of Bristol St. at Sunflower Ave. 11 Comment
  CAS-BOT-BC502095  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -381 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
  RSA0088637  Ficus microcarpa R. E. Riefner Jr. 2015-8-27 15 -359 Orange City of Newport Beach, Corona del Mar, on Marguerite Ave. between Fifth Ave. and Fourth Ave. 41 Comment
  RSA0116293  Ficus microcarpa R. E. Riefner Jr. 2008-10-22 08 -312 Orange City of Laguna Beach, vicinity of West St and Pacific Coast Hwy. 8 Comment
  UCR267276  Ficus microcarpa R. E. Riefner Jr. 2014-11-26 14- 399 Orange City of Irvine, west of Irvine Blvd. and south of Pusan Way, former MCAS El Toro facility 138 Comment
  CDA23581  Ficus rubiginosa Mark A. Elvin, D. G. Kelch 2006-12-9 5314 Orange Southern Coastal; Irvine; San Diego Creek, edge of San Joaquin Marsh, beside University Drive, between Campus Drive and Highway 73. Comment
  UCR266147  Ficus rubiginosa R. E. Riefner Jr. 2014-2-24 14- 65 Orange South Coast, city of Dana Point, west c. 0.1 mi from Island Way along Dana Point Harbor Drive, cliff slope immediately south of Santa Clara Avenue and Amber Lantern Street 11 Comment
  RSA542431  Filago gallica Fred M. Roberts, Gordon Marsh, Karlin G. Marsh 1988-4-26 3938 Orange San Joaquin Hills: Pelican Hill, 0.5 kim SE Summit. 165 Comment
  CLARK-A1528-140  Foeniculum vulgare Brian L. Estes 1960-7-23 Orange San Juan Capistrano Comment
  IRVC3697  Foeniculum vulgare Anonymous 1965-4-14 Orange Dana Point Comment
  JEPS12254  Foeniculum vulgare Lawrence M. Booth 1932-8-5 1346 Orange Newport Beach 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
  RSA759534  Foeniculum vulgare Robt. Allen 2006-12-13 s.n. Orange Trabuco Canyon. About 2 mi. up from Live Oak Road, SW of Trabuco Truck Trail, in creekbed near base of north-facing hillside 395 Comment
  HSC87010  Frangula californica Reid Moran 1975-7-18 22596 Orange Bottoms of Upper Trabuco Canyon, Santa Ana Mtns. 725 Comment
  CAS-BOT-BC63072  Frangula californica subsp. californica Carl B. Wolf; E. R. Johnson 1933-11-3 5532 Orange Santa Ana Mts., Silverado Canyon, base of Silverado Motorway. 731 Comment
  CAS-BOT-BC63073  Frangula californica subsp. californica John Thomas Howell 1927-6-26 2605 Orange Claymine Canyon, n. Santa Ana Mts. 457 Comment
  RSA144566  Frankenia grandifolia Peter H. Raven 1958-6-5 13563 Orange Just north of Surfside Comment
  RSA391398  Frankenia grandifolia Albert J. Perkins 1923-6-28 s.n. Orange Laguna Beach. Comment
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Jul 15 2013
  POM201882  Frankenia grandifolia var. campestris L. M. Booth 1932-7-27 1324 Orange Corona del Mar, Newport Beach, Bluff Ravine Comment
  HSC8343  Frankenia salina J. W. Johnson 1961-4-2 Orange Newport Beach, along upper Newport Bay Comment
  IRVC24106  Frankenia salina Fred M. Roberts 1985-9-6 2220 Orange Laguna Beach; Sycamore Hills along Laguna Cyn Rd; N of jct with El Toro Road. Southern Coastal 75 Comment
  RSA678748  Frankenia salina Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1104 Orange Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  RSA0039582  Franseria bipinnatifida Elbert Benjamine 1929-5-14 240 Orange Sunset Beach. Comment
  POM13826  Fraxinus dipetala P. A. Munz 1922-4-28 5046 Orange Leach Canyon, Santa Ana Mountains 671 Comment
  RSA184103  Fumaria parviflora I. L. Wiggins 1965-12-5 20366 Orange 2 miles east of Atwood on north side of Orangethorpe Ave. Comment
  OBI42766  Fumaria parviflora Larry Summers 1983-4-18 s.n. Orange Tustin, Irvine Ranch, Field 120 at the intersection of Bryan and Culver. At the edge of a tomato field 46 Comment
  RSA184111  Fumaria parviflora I. L. Wiggins 1965-11-5 20327 Orange In orange grove on N side of Chapman Avenue, near Kraemer Road. Comment
  RSA566  Funastrum cynanchoides var. hartwegii J. T. Howell 1927-7-24 461 Orange Santa Ana River bottom near Rancho Santa Ana. 152 Comment
  RSA682913  Galium angustifolium Scott D. White, Amanda Duchardt 2003-5-1 9163 Orange Santa Ana Mountain Foothills: Slopes above west side of Trampas Canyon. 107 Comment
  HSC19777  Galium angustifolium subsp. angustifolium J. W. Johnson 1961-3-29 Orange Newport Beach, slope overlooking Upper Newport Bay. Comment
  RSA542397  Galium angustifolium subsp. angustifolium Fred M. Roberts, Dar A. Roberts 1989-3-22 4218 Orange Aliso-Wood Regional Park: Lower Wood Canyon, 3.6km SSE Moulton Peak. 38 Comment
  UCR11142  Galium aparine S. M. Chambers 1970-5-3 14 Orange Carbon Canyon Road, 2 mi SE of La Vida Mineral Springs Comment
  RSA610219  Galium aparine Fred M. Roberts Jr., Julie Vanderwier 1997-4-29 5017 Orange Bolsa Chica Salt Marsh (U.S. Fish and Wildlife Service cell 17), west edge of old oil field, 1.7 km SSE Chica Survey Mark. 0 Comment
  RSA752320  Galium parisiense Fred M. Roberts 2008-5-20 7133 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
  UCR158850  Galium parisiense A. C. Sanders, Mark A. Elvin 2005-9-2 31603 Orange Peninsular Range; Santa Ana Mtns., mouth of Lion Canyon near Lower San Juan Picnic Area, San Juan Creek Canyon 427 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
  UCR191229  Galium porrigens A. C. Sanders, Fred M. Roberts 2008-4-22 35042 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, valley at south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado, above spring shown on topo map 457 Comment
  UCR193262  Gamochaeta pensylvanica A. C. Sanders, Fred M. Roberts 2008-6-17 35523 Orange Peninsular Range; Santa Ana Mtns., middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 230 Comment
  CHSC39254  Garrya flavescens M. O. Dillon 1977-4-12 Orange Santa Ana Mts., Silverado Canyon. Comment
  IRVC21234  Garrya flavescens Fred M. Roberts 1984-2-12 1180 Orange Santa Ana Mtns: 0.1km SW of Falcon Group Camp; 2.0km ESE Los Pinos Peak. Peninsular Ranges 1000 Comment
  UC1122672  Garrya flavescens H. E. Norton 1931-3-21 47 Orange Bedford Peak; Corona Quad. 1066 Comment
  RSA608241  Garrya flavescens var. pallida Steve Boyd, Bart O'Brien 1998-1-13 10075 Orange Santa Ana Mountains: north end of the range, head of Tin Mine Canyon along Main Divide Road (3S04) ca. 1.8 mi south of Oak Flat. 884 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
  POM255092  Gaura odorata E. Johnson 1940-8-15 s.n. Orange Kokke estate, I.5 miles north of Placentia. Comment
  POM255093  Gaura odorata E. Johnson 1940-8-15 s.n. Orange Kokke estate, I.5 miles north of Placentia. Comment
  UCR64601  Gaura parviflora var. lachnocarpa E. L. Paddock 1943-6-8 12730 Orange Whittier Road, one-fourth mi. west of Puente Street, Brea. Comment
  CDA5232  Gaura sinuata E. Dudley Aug 1939 Orange 0 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
  RSA610227  Gazania linearis Fred M. Roberts Jr., Tony Bonkamp 1997-3-19 4988 Orange RANCHO MISSION VIEJO: Canada Gobernadora, east slope, 2km. SSE Median Rancho Survey Mark, 1.8 km N Calif. Rte.74. 104 Comment
  RSA0127604  Geranium carolinianum Fred M. Roberts 2016-3-25 8034 Orange San Joaquin Hills: Bommer Canyon, west slope near south end fo Nature Loop Trail, 0.1 km NW Cattle Camp and 1.6 km NE summit of Signal Peak. 146 Comment
  OBI82102  Geranium incanum var. multifidum Unknown 2012-6-30 12 -285 Orange City of Costa Mesa, Talbert Regional Park, general vicinity of Balboa Blvd. and 19th Street 5 Comment
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Apr 23 2020
  RSA797025  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-16 12 -404 Orange City of Dana Point, Dana Point Harbor Drive at Island Way. 11 Comment
  RSA749296  Gilia achilleifolia Fred M. Roberts, Linda Farley 2008-3-28 6816 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork along ridge just west of SR241, 3.4 km E Robber's Peak, Irvine Land Conservancy. 437 Comment
  RSA749309  Gilia capitata subsp. abrotanifolia Fred M. Roberts 1999-4-22 5195 Orange Lomas de Santiago: ridges between Limestone Cyn. and Santiago Creek wash opposite mouth Williams Cyn., 2.0 km SE Silverado Sch. and 2.2 km NNW Bolero Lookout. 400 Comment
  RSA548866  Gilia capitata subsp. abrotanifolia Fred M. Roberts, Carol A. Roberts 1988-6-2 4029 Orange Santa Ana Mountains: Silverado Canyon. Maple Springs Truck trail. 4.3 km above gate, 1.0 km WSW Bald Peak. 817 Comment
  RSA0045511  Gnaphalium beneolens Dorothy Parsons 1932-5-15 s.n. Orange Irvine Park road. PR8. Comment
  RSA736570  Gnaphalium californicum Keith E. Hoffmaster 1935-4-14 606 Orange Live Oak can. 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
  RSA860  Gnaphalium chilense J. T. Howell 1927-10-29 781 Orange Bryant Ranch near Long Beach. 15 Comment
  RSA722938  Gnaphalium leucocephalum R. E. Riefner 2007-3-21 07 -157 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek. Comment
  UCR126410  Gnaphalium leucocephalum Fred M. Roberts 2003-7-24 5963 Orange South Coast, San Juan Capistrano, San Juan Creek, c. 0.1 km NE of La Novia Bridge 27 Comment
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Jun 4 2013
  UCR138408  Gnaphalium leucocephalum Scott D. White, Brian Leatherman 1997-6-12 5342 Orange Santa Ana Mtn. foothills, E of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e. c. 2-4 mi east of Hwy I-15/Hwy 74 junction 76 Comment
  POM186305  Gnaphalium microcephalum Joseph A. Ewan 1932-7-28 7702 Orange Corona Del Mar Comment
  JEPS20430  Gnaphalium palustre L. M. Booth 1932-5-24 1086 Orange Newport Bay Comment
  RSA666100  Gnaphalium palustre Fred M. Roberts, Michelle Lee 2001-6-4 5484 Orange Rancho Mission Viejo: Chiquita Ridge, 0.3km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. (Canada Gobernadora. 226 Comment
  UCR194554  Gnaphalium stramineum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35325 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 0.3 mi. west of Eastern Transportation Corridor (Hwy 241) and 1.45 mi. east of south end of Walnut Canyon Reservoir 335 Comment
  CDA6068  Gnaphalium stramineum Walden 1951-5-24 Orange Dr. Beebe, southwest corner Gilbert & Orange, Anaheim. 0 Comment
  IRVC24748  Gnaphalium stramineum Fred M. Roberts 1986-4-29 2818 Orange Turtle Rock, above corner of Ridgerout Dr. and Turtle Rock Dr., 1.1km SE French Hill, Irvine 141 Comment
  IRVC20018  Grindelia camporum var. bracteosa Fred M. Roberts 1981-6-20 276 Orange 0.7km ENE Dana Hills High School, Dana Point 76 Comment
  IRVC4033  Grindelia camporum var. bracteosa A. S. Boughey 1968-7-16 422 Orange road to Signal Peak. San Joaquin Hills Comment
  IRVC746  Grindelia camporum var. bracteosa L. Stilgenbauer 1965-4-5 Orange Corona del Mar, in field near Cameo Shores Rd. Newport Beach Comment
  RSA703683  Grindelia camporum var. bracteosa Fred M. Roberts, David E. Bramlet 2004-11-5 6126 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, west slopes of Cristianitos Cyn., 0.79 km N Sycamore Gate and 0.18 km W Cristianitos Road. 146 Comment
  CAS-BOT-BC305212  Grindelia hirsutula David D. Keck 1932-9-30 1899 Orange Ca. 5 mi. S. of Santa Ana, at R.R. right-of-way on road to Newport Beach Comment
  JEPS57260  Grindelia hirsutula L. R. Heckard and R. C. Bacigalupi 1968-5-8 1836 Orange on terrace back of ocean just n of Doheny Beach Park Dana Point Comment
  POM359094  Grindelia robusta H. E. Hasse, Anstruther Davidson 1907-9-1 s.n. Orange Newport Beach, Santa Ana. Comment
  UCR151117  Gutierrezia californica Scott D. White 1998-10-15 7188 Orange Santa Ana Mtns foothills, Yorba Linda, c. 0.5 mi south of Telegraph Canyon between Ohio St. and Fairmont 305 Comment
  UCR230841  Gutierrezia californica Dick Newell, Don Millar, Shara Harris 2011-6-21 184 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash 207 Comment
  UCR24011  Hainardia cylindrica John C. Roos 1941-6-4 s.n. Orange Corona Del Mar Comment
  RSA752819  Haplopappus menziesii A. C. Sanders, Fred M. Roberts 2008-8-7 35975 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  RSA0066587  Harpagonella palmeri Fred M. Roberts, David Bramlet 2003-5-1 5691 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.56 km SSW Gato Gate and 0.21 km W of Cristianitos Rd. 111 Comment
  UCR241069  Harpagonella palmeri Dick Newell, Don Millar, Gigi Logan 2013-3-19 321 Orange Peninsular Range; Santa Ana Mtns., Silverado-Mod. Trail, 1.27 miles north of Blackstar and Silverado Canyon Rd. 366 Comment
  RSA0066596  Harpagonella palmeri D. E. Bramlet 2003-3-20 3352 B Orange Donna O Neill Reserve. 122m west of Cristianitos Road, and 1.7 km north of the E-W access road. The site is just north of an ephemeral stream channel. 134 Comment
  RSA797596  Hazardia squarrosa var. grindelioides R. F. Thorne 1977-11-21 49993 Orange Santa Ana Mountains: tributary canyon to San Juan Canyon about 2 miles above San Juan Fire Station Comment
  UC1118833  Hazardia squarrosa var. grindelioides A. Lewis 1934-4-1 430 Orange Los Pinos Peak Cleveland National Forest, Elsinore Quad., Los Pinos Peak 1219 Comment
  IRVC23184  Hedera canariensis G. Reynolds 1987-7-7 4 Orange Costa Mesa, at corner of Mesa St. and Santa Ana Ave. Comment
  RSA0027782  Helianthemum scoparium var. 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
  CAS-BOT-BC305446  Helianthus annuus John Thomas Howell 1927-7-27 2846 Orange Hills on n. side of Santa Ana Canon [Canyon] 152 Comment
  CAS-BOT-BC305444  Helianthus annuus Ira L. Wiggins 1966-5-18 20662 Orange Along Associated Road between Yorba Linda Blvd. and Imperial Highway Comment
  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
  CAS-BOT-BC305656  Helianthus ciliaris T. C. Fuller 1962-6-7 8871 Orange Union Oil lease, Deodoro St., 1.2 mi. e. of Brea Blvd., Brea Comment
  OBI4714  Helianthus ciliaris T. C. Fuller 1962-6-7 8874 Orange Veeh ranch, N of El Toro, ca 11 mi SE of Tustin Comment
  CLARK-A1528-1910  Helianthus gracilentus John C. Roos 1937-5-10 2086 Orange Santa Ana Mountains Comment
  RSA659548  Helianthus gracilentus P. Shirokawa 1998-5-7 14 Orange Cleveland National Forest- Trabuco Ranger District, 0.3 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 808 Comment
  SBBG104036  Helianthus gracilentus B. Pitzer, H. Hemstreet 1992-5-27 1963 Orange Rd 3S04 to Blue Jay Group Cmpgrd, off St Hwy 74, ca. 2 air mi W of El Cariso Cmpgrd Comment
  UCR192093  Helianthus gracilentus A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35293 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  RSA0022445  Helianthus gracilentus R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49783 Orange Santa Ana Mountains: Trabuco Canyon Comment
  SD87639  Helianthus nuttallii subsp. parishii F. W. Peirson 1924-10-19 5247 Orange Wintersberg Comment
  CHSC26505  Heliotropium curassavicum Roger Shelby 1970-8-22 Orange Ca. 3 mi. N. of Huntington Beach, 1 1/2 mi. So. of Warner Ave. on Pacific Coast Hwy. in Bolsa Bay area. In salt marsh. 0 Comment
  UCR46552  Heliotropium curassavicum B. G. Pitzer 1986-10-20 0312 Orange Peninsular Range; Santa Ana Mtns., Siphon Reservoir, c. 5 mi NE of Irvine and c. 1 mi NE of intersection Irvine Blvd and Sand Canyon Ave 122 Comment
  UCSB48091  Heliotropium curassavicum Roberts, Jr., Fred 1981-5-2 Orange Mission Viejo: Camino Capistrano, 1.7km N Crown Valley Parkway 49 Comment
  RSA0037205  Heliotropium curassavicum Darren Day, Hal Willis 1984-5-17 025 Orange This plant was found growing 2.3 miles outside of the city of Laguna Beach, on Laguna Canyon Rd. heading north, on the east side of the road. Comment
  UCD119421  Heliotropium curassavicum var. oculatum E. Frost 1996-5-11 16 Orange Newport Back Bay, 25 yards in along bike path. 7 Comment
  CAS-BOT-BC305898  Helminthotheca echioides Ira L. Wiggins 1965-10-18 20278 Orange At NE corner of Chapman Ave. and Victor Dr., Fullerton Comment
  CAS-BOT-BC305899  Helminthotheca echioides Ira L. Wiggins 1965-11-5 20322 Orange Near corner of Dowling Street and Crowther Avenue. 1/2 mi. S of Placentia Comment
  UCD132945  Helminthotheca echioides P. B. Kennedy 1924-2-13 s.n. Orange Huntington Beach District. Comment
  RSA234522  Hemizonia australis James Henrickson 1970-7-25 5081 Orange 3.5 miles NW of Huntington Beach growing along graded inner slope of East Garden Grove-Wintersburg Flood Control Channel near Bolsa Chica Salt Marsh. 2 Comment
  IRVC17976  Hemizonia fasciculata K. Marsh 1980-5-8 Orange Pelican Point. Crystal Cove State Park Comment
  RSA627746  Hemizonia fasciculata Scott D. White 1998-1-26 6069 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
  UCR38084  Hemizonia fasciculata G. Sampson 1985-4-23 85 362 Orange Chino Hills State Park, W end of Telegraph Canyon Comment
  RSA682919  Hemizonia paniculata Scott D. White, Amanda Duchardt 2003-5-1 9147 Orange Santa Ana Mtn Foothills; slopes above the west side of Canada Gobernadora and adjacent small canyon to the west. 76 Comment
  LA26011  Hemizonia parryi subsp. australis David D. Keck; 1933-9-29 2537 Orange Seal Beach Comment
  SEINET3071661 Image available Hemizonia parryi subsp. australis D. D. Keck 1933-9-29 2537 Orange Seal Beach Comment
  UCR231160  Hemizonia parryi subsp. australis Dick Newell, Don Millar 2011-6-22 191 Orange South Coast, Newport Beach, Delhi Channel near University Drive 5 Comment
  UCR248971  Hemizonia parryi subsp. australis Jeremiah George, Audrey J. George 2013-11-21 s.n. Orange Los Alamitos, adjacent to Los Alamitos Racetrack, north end of Katella Ave. at junction with Enterprise Dr. 9 Comment
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May 15 2019
  CAS-BOT-BC143755  Heteromeles arbutifolia John Thomas Howell 1927-7-16 2783 Orange Hills on north side of Santa Ana [Canon] Canyon 152 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
  UCR100450  Heteromeles arbutifolia B. G. Pitzer 1996-4-30 2781 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  RSA0072399  Heteromeles arbutifolia Carl B. Wolf, B. D. Stark 1932-12-19 4430 -A Orange Santa Ana Mts: 1/2 mile from Skyline Drive on firebreak road to Sierra Peak. 762 Comment
  RSA0072405  Heteromeles arbutifolia Percy C. Everett, E. R. Johnson 1937-11-30 9380 Orange Santa Ana Mts., head of Claymine Canyon on north slopes of Sierra Peak. 762 Comment
  IRVC25170  Heterotheca grandiflora Fred M. Roberts, B. Fugle 1986-10-1 3148 Orange Laguna Hills; creek channel along Cabot Rd. ca. 1.0km N Pacific Park Pkwy. Southern Coastal 99 Comment
  IRVC796  Heterotheca grandiflora B. Newman 1965-3-14 Orange Dana Point Comment
  RSA0074065  Heterotheca grandiflora Scott D. White, Michael Honer 2004-5-17 10383 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
  RSA0075819  Heterotheca grandiflora D. A. Young 1969-5-26 P 496 Orange North corner of Bastanchury Road and State College Blvd. [Fullerton] 152 Comment
  RSA743501  Hirschfeldia incana Fred M. Roberts 2008-7-10 7077 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  RSA0026264  Hoita macrostachya Fred M. Roberts 2013-6-12 7785 Orange Peninsular Ranges: Santa Ana Mtns: Lower Silverado Canyon along Silverado Creek on north side of Silverado Canyon Road, 0.6 kilometers ENE Silverado School and 1.4 kilometers up stream Black Star Road Crossing. 320 Comment
  SD168141  Hoita macrostachya G. A. Marsh, K. G. Marsh 1976-7-8 Orange Santa Ana Mountains, Lower San Juan Picnic Grounds, near Cal. Rt. 74. Comment
  POM244252  Holodiscus discolor Percy C. Everett 1935-6-18 7221 Orange Santa Ana Mts: Summit of Santiago Peak. 1732 Comment
  RSA131403  Holodiscus discolor E. K. Balls 1958-6-27 23284 Orange 5 miles southeast from Silverado (Gate), Silverado Canyon 1098 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
  RSA12282  Hordeum brachyantherum C. B. Wolf 1934-4-11 5657 Orange Bryant Ranch, east of Long Beach, along Bixby Ave., 0.5 mile west of Hansen Rd. 100 ft N of fence 8 Comment
  SD181760  Hordeum depressum Valerie Soza, K. Clark,F. Roberts,W. Miller,L. R. Gross,G. Wallace 2001-4-4 1132 Orange Northern edge of Huntington Harbor: Seal Beach U.S. Naval Weapons Station, southeastern edge of Seal Beach National Wildlife Refuge, along roadside 3 Comment
  CHSC109697  Hordeum intercedens D. Bramlet 1999-6-11 2808 Orange On slope 76 m east of Cristianitos Creek and 488 m northeast of the intersection of Avenida Pico and Cristianitos Road. UTM 11S 04 47 340mE x 37 02 080mN 79 Comment
  RSA608537  Hordeum intercedens D. E. Bramlet 1993-4-18 2332 Orange University of California, Irvine Campus, on the UCI Ecological Reserve. The site is 500 ft. southwest of the end of Los Trancos Dr. & 75 ft northwest of the reserve entrance., 37 21 370m. N X 4 21 950m E. Comment
  RSA642527  Hordeum intercedens D. E. Bramlet 1998-5-25 2627 Orange 120m north of the Newport Beach Library and 61m west of McArthur Blvd. 914m south of San Miguel Drive., Laguna Beach 7.5 USGS Quadrangle. UTM 11S 04 19 210m E X 37 18 860m N. Eleation 49 m. 15 Comment
  RSA655235  Hordeum intercedens D. E. Bramlet 1998-5-21 2626 Orange On slope adjacent to a tributary of Segunda Deshecha Canada, approximately 610m north of the existing access road (Telaga Valley Dr.) and 2.9 km north of Avenida Pico;, The site is approximately 1.93 km west of Cristianitos Canyon & 640m west of Wilson Camp Road. UTM 11S 04 45 670mE X 37 04 912mN 201 Comment
  UCR142296  Hordeum intercedens D. E. Bramlet, Sandy Leatherman 1998-5-21 2626 Orange Slope adjacent to a tributary of Segunda Deshecha Canada, c. 610 m N of the exisitng access road (Telaga Valley Dr.) and 2.9 km N of Avenida Pico. c. 1.93 km west of Cristianitos Canyon and 640 m west of Wilson Camp Rd 201 Comment
  UCR158160  Hordeum intercedens Adrian Wolf 1998-4-24 161 Orange South Coast, San Joaquin Hills, Shady Canyon, central part west of main canyon on ridgetop, 2.5 km NE of Signal Peak, 3 km south of Sand Canyon Reservoir 152 Comment
  UCR158169  Hordeum intercedens Adrian Wolf 1998-4-20 111 Orange Santa Ana Mtns., lower Limestone Canyon near Irvine Lake, 3 km SE of Irvine Lake dam, north of Santiago Canyon Rd. 287 Comment
  UCR168466  Hordeum intercedens D. E. Bramlet, Fred M. Roberts 2003-5-8 3433 Orange Donna O'Neill Reserve, S-mid east area of reserve, 91 m west of Cristianitos Rd. and 152 m south of the east - west road, San Clemente 119 Comment
  RSA701209  Hordeum murinum Keith E. Hoffmaster 1927-3-25 s.n. Orange Santa Ana. Comment
  UCR99555  Hordeum murinum subsp. leporinum B. G. Pitzer 1996-4-30 2799 A Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  UCR263677  Horkelia cuneata var. cuneata Mark A. Elvin 2001-4-8 1554 Orange South Coast, South San Clemente, west of I-5, SE of Avenida Califa 37 Comment
  UCR231503  Hulsea heterochroma Dick Newell, Judy Booth 2011-6-19 183 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Rd., Cleveland National Forest, above Santiago Canyon 1086 Comment
  RSA526  Hydrocotyle umbellata J. T. Howell 1927-8-13 624 Orange Santa Ana River Bottom 152 Comment
  CAS-BOT-BC312647  Hymenothrix loomisii 1943-12-1 s.n. Orange Costa Mesa Comment
  CAS-BOT-BC539350  Hypericum canariense R. E. Riefner, Jr. 2010-6-9 10 -56 Orange City of San Juan Capistrano, La Novio Ave. at Valle Rd. 45 Comment
  OBI74741  Hypericum canariense Unknown 2010-6-9 Oct- 52 Orange City of San Juan Capistrano, along McKraken View Trl at San Juan Crk rd, E of I-5 fwy 51 Comment
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May 28 2015
  RSA450874  Hypericum canariense Fred M. Roberts 1984-4-29 1361 Orange Dana point Headlands: 0.5km NW Dana Point Harbor; 0.4km S Richard Henry Dana School 75 Comment
  IRVC813  Hypochaeris glabra L. McCabe 1965-4-6 Orange Corona del Mar. Newport Beach Comment
  UC1543186  Hypochaeris glabra Donald G. Nelson 1935-4-6 234 Orange e San Juan Capistrano; Cleveland National Forest Comment
  UCR100447  Hypochaeris glabra B. G. Pitzer 1996-4-30 2782 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR238204  Hypochaeris glabra Mark A. Elvin 2003-3-30 2385 Orange South Coast, north side of UC Irvine Preserve, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  CAS-BOT-BC438782  Ipomoea cairica R. E. Riefner, Jr. 2012-11-27 12 -563 Orange City of Laguna Beach, South Crescent Beach, Circle Way near Cliff Drive. 3 Comment
  UCR240185  Ipomoea cairica R. E. Riefner Jr. 2012-11-27 12- 563 Orange South Coast, city of laguna Beach, South Crescent Beach, Circle Way near Cliff Drive 3 Comment
  CAS-BOT-BC506646  Iris pseudacorus R. E. Riefner, Jr. 2015-4-24 15 -125 Orange Cit of Newport Beach, Upper Newport Bay, E or Irvine Ave., SSE of 23rd St and NNE of Santiago Dr., along main trail adjacent to willow scrub habitat 4 Comment
  UCR151113  Isocoma menziesii Scott D. White 1998-10-19 7190 Orange Santa Ana Mtns foothills, Yorba Linda, c. 0.5 mi south of Telegraph Canyon between Ohio St. and Fairmont 305 Comment
  JEPS19467  Isocoma menziesii var. menziesii Peter H. Raven 1957-9-28 11368 Orange n limits of Surfside Comment
  JEPS19115  Isocoma menziesii var. vernonioides L. M. Booth 1932-6-29 1225 Orange Newport Bay Comment
  RSA573432  Isocoma menziesii var. vernonioides Steve Boyd, Tim Ross 1994-9-14 8343 Orange Southern Santa Ana Mtns, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon trailhead at Forest Service4 Road 7S06 on ridge dividing Aliso and Verdugo Canyons. 476 Comment
  RSA640310  Isocoma menziesii var. vernonioides L. C. Wheeler 1931-6-8 s.n. Orange Balboa Comment
  RSA892  Isocoma menziesii var. vernonioides J. T. Howell 1927-9-24 738 Orange Santa Ana Botany Garden 152 Comment
  UC221420  Isocoma menziesii var. vernonioides F. M. Reed 1917-7-1 3918 Orange bluffs at Laguna Laguna Comment
  UC672256  Isocoma menziesii var. vernonioides H. L. Mason 1926-4-25 2906 Orange 5 mi s Laguna Comment
  RSA750904  Isolepis cernua A. C. Sanders, Fred M. Roberts 2008-7-3 35708 Orange Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  IRVC19387  Isomeris arborea R. L. Allen 1975-2-18 Orange Dana Hills High School nature preserve; common. Dana Point Comment
  JEPS34772  Jaumea carnosa L. M. Booth 1932-6-9 1183 Orange Newport Bay Comment
  POM361345  Jaumea carnosa L. C. Wheeler 1932-6-22 846 Orange Newport Bay, Orange County Comment
  UCR240104  Jaumea carnosa Dick Newell, Judy Booth 2012-9-26 292 Orange South Coast, Newport Beach, Back Bay Drive at the Salt Dike 3 Comment
  RSA703682  Jepsonia parryi Fred M. Roberts, D. E. Bramlet 2004-11-5 6127 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, west slopes of Cristianitos Cyn., 0.79 km N Sycamore Gate and 0.18 km W Cristianitos Road. 146 Comment
  RSA0011063  Juglans californica M. B. Dunkle 1933-5-30 3569 -A Orange Carbon Canyon Comment
  SEINET13942201 Image available Juglans californica Kay Raeder 1955-1 492 Orange Flying Cow Ranch, San Jose Hills Mt. Range, Pacific Coast drainage area, north slope. 850 ft. 259 Comment
  RSA171  Juglans californica var. californica J. T. Howell 1928-4-14 908 Orange Aliso Canyon, Rancho Santa Ana. 229 Comment
  SD70810  Juglans californica var. californica Lucille Kempers 1955-3-19 252 Orange Flying Cow Ranch in Carbon Canyon 259 Comment
  CAS-BOT-BC354339  Juglans hindsii R. E. Riefner, Jr. 2010-9-8 10 -124 Orange City of Laguna Beach, Laguna Canyon, ca 0.25 mi S of Sun Valley Dr. on E side of Laguna Canyon Rd. 65 Comment
  RSA0024927  Juglans hindsii R. E. Riefner Jr. 2013-11-6 13 -234 Orange City of Laguna Beach, Laguna Canyon, N of Phillips St. on E side of Laguna Canyon Rd. 71 Comment
  UCR210312  Juglans hindsii A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37203 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., near Agustine Staging Area at south foot of Blue Diamond Haul Rd. bridge over Santiago Canyon Rd. 253 Comment
  UCR246397  Juglans hindsii R. E. Riefner Jr. 2013-11-6 13- 233 Orange South Coast, city of Laguna Beach, Laguna Canyon, north of Phillips Street on east side of Laguna Canyon Road 71 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
  CAS-BOT-BC110026  Juncus acutus L. R. Abrams 1917-6-23 6572 Orange Balboa. Comment
  RSA683232  Juncus acutus Scott D. White, Matt Carlton 2003-11-20 9861 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (Dana Point) 24 Comment
  POM47588  Juncus acutus subsp. leopoldii I. M. Johnston 1924-8-29 s.n. Orange 4 miles north of Balboa Comment
  UCD141300  Juncus acutus subsp. leopoldii Jim Sherar 1992-9-1 s.n. Orange near Huntington Beach. Comment
  UCR4761  Juncus acutus subsp. leopoldii Barbara T. Gittins 1966-5-29 1369 Orange Upper Newport Bay Comment
  RSA788923  Juncus dubius Fred M. Roberts 1999-6-23 5245 Orange Peninsular Range, Santa Ana Mtns. Region: Lomas de Santiago: tributary to Santiago Creek, ridge between Limestone Cyn, and Santiago Creek wash across from Pancho Canyon, 1.6 km ENE Bolero Spr. and 1.6 km NNW Bolero Lookout. 396 Comment
  UC1543046  Juncus effusus subsp. austrocalifornicus Donald G. Nelson 1935-4-6 244 Orange e of San Juan Capistrano (200-300 ft below main highway, about 4 mi from summit); San Juan Canyon Comment
  RSA562612  Juncus patens Steve Boyd, Fred M. Roberts 1992-10-14 7714 Orange Northern Santa Ana Mountains, vicinity of Oak Flats (aka Oat Flats) northeast of the junction of Main Divide Road and Skyline Road, just west of Riverside County line 800 Comment
  UCR177288  Juncus phaeocephalus Scott D. White, Amanda Duchardt 2003-5-1 9151 Orange Santa Ana Mountains, Canada Gobernadora 122 Comment
  SEINET6174580  Juncus phaeocephalus E. K. Balls 1949-5-9 13467 Orange Botanic Garden, Santa Ana River Canyon 198 Comment
  POM1601  Juncus rugulosus C. B. Bradshaw 1902-7-19 s.n. Orange Santiago Canyon. Comment
  UCR174221  Juncus rugulosus A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33025 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
  JEPS74130  Juncus textilis Lawrence M. Booth 1932-6-7 1159 Orange Newport Lagoon Comment
  RSA794757  Juncus torreyi Justin M. Wood, Dustin M. Ray 2010-10-1 2774 Orange Santa Ana Canyon: Santa Ana River plus/minus 1 mi downstream of Gypsum Canyon Bridge, just upstream of large commercial development. Near drain outflow from Flood Control Levee on south side of channel. 110 Comment
  RSA748271  Juncus xiphioides A. C. Sanders, Fred M. Roberts 2008-6-17 35510 Orange Middle section of Weir Canyon, SSE of Walnut Canyon Reservoir. 225 Comment
  UCR174211  Juncus xiphioides A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33046 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  UCR193276  Juncus xiphioides A. C. Sanders, Fred M. Roberts 2008-6-17 35510 Orange Peninsular Range; Santa Ana Mtns., middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  POM21178  Juncus xiphioides Helen D. Gels 1902-11 s.n. Orange Santa Ana [River?] Comment
  SEINET10932780  Juniperus chinensis Charlene A. Bennett 1976-7-21 Bennett 438 Orange Cultivated plants collected in and around the condominium-Pacific Island Estates in Laguna Hills; some native shrubs, etc. 152 Comment
  POM4196  Keckiella antirrhinoides I. M. Johnston 1918-5-26 s.n. Orange Hills south of Ontario 1 mile west of Santa Ana Canon.. 366 Comment
  RSA293253  Keckiella antirrhinoides D. C. Michener 1980-6-5 3668 Orange San Juan River valley. 300 Comment
  CAS-BOT-BC235529  Keckiella antirrhinoides var. antirrhinoides Robinson; Crocker 1916-3-28 999 Orange Santa Ana Mt Comment
  NY790216  Keckiella cordifolia F. R. Fosberg 1931-6-21 S 5133 Orange Silverado Canyon, Santa Ana Mountains Comment
  RSA293307  Keckiella cordifolia D. C. Michener 1980-6-21 3683 Orange Starr Audubon Sanctuary. Riparian woodland margin in Crow Creek ca. 1.5 mi. north of confluence with Bell Canyon. 250 Comment
  RSA564474  Keckiella cordifolia B. Pitzer, S. Hemstreet 1992-5-27 1959 Orange Cleveland National Forest. Along road (3S04) to Blue Jay Group Campground, off State Hwy 74 (Ortega Hwy). Approx. 2 mi. (airline) W of El Cariso Campground. 762 Comment
  RSA748264  Keckiella cordifolia A. C. Sanders, Fred M. Roberts 2008-6-17 35516 Orange middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  RSA773556  Keckiella cordifolia Fred M. Roberts 2008-6-3 7028 Orange Lomas de Santiago: Loma Ridge, East Fork Rattlesnake Canyon, ca. 2.6 km NE of Rattlesnake Reservoir spillway and 2.4 km ENE Bee Peak 235 Comment
  SD245486  Keckiella cordifolia Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49620 Orange Santa Ana Mountains: about 1 mile above San Juan Fire Station. Comment
  UCR227628  Keckiella ternata subsp. ternata Robt. L. Allen 2003-6-22 12296 Orange Peninsular Range; Santa Ana Mountains, northeastern flank of Santiago Peak, along North Main Divide Road 1505 Comment
  RSA761792  Keckiella ternata subsp. ternata Robert Allen 2003-6-22 12294 Orange Northeastern flank of Santiago Peak, along North Main Divide Road. 1506 Comment
  RSA761793  Keckiella ternata subsp. ternata Robert Allen 2003-6-22 12295 Orange Northeastern flank of Santiago Peak, along North Main Divide Road. 1506 Comment
  SD134374  Kickxia elatine Craig Reiser 1991-7-1 Orange Live Oak Road near the foothills of the Santa Ana Mountains Comment
  POM7129  Koeleria macrantha P. A. Munz, L. T. Street 1919-5-3 2622 Orange Santa Ana River Canyon. Comment
  RSA682912  Koeleria macrantha Scott D. White, Amanda Duchardt 2003-5-1 9161 Orange Above west side of Trampas Canyon; (Canada Governadora)., 33?30'30N, 117?35'W 107 Comment
  UCR132992  Koeleria macrantha Adrian Wolf 2000-1 457 Orange Santa Ana Mtns., North Ranch Policy Plan Area, tributary to Blind Canyon, NW of coal mine 305 Comment
  CAS-BOT-BC271252  Koeleria pyramidata P. Munz; L. Street; G. Williams 1919-5-3 2633 Orange Santa Ana River Canyon Comment
  CDA7192  Koelreuteria bipinnata T. B. Salvato, K. Kurtz, Mitch Provance 2006-10-15 1903 Orange South Coast; Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Dirve. Comment
  RSA0069226  Koelreuteria bipinnata Fred M. Roberts 2008-9-3 7081 Orange Yorba Linda: Santa Ana River Canyon, Santa Ana River, 0.6 km W Gypsum Cyn. bridge, south of La Palma Ave. 113 Comment
  UCR184669  Koelreuteria bipinnata Dean Kelch 2006-12-9 06 .556 Orange Irvine. University Dr. along tidal Creek just east of I-73 9 Comment
  RSA0027432  Lactuca serriola Fred M. Roberts 2013-7-18 7666 Orange San Joaquin Hills: Newport Beach, Buck Gully, along Buck Gully Trail, about 0.7 km from the north terminus of Poppy Street and 1.8 km WNW summit of Pelican Hill. 52 Comment
  RSA5802  Lactuca serriola C. B. Wolf 1932-6-28 3780 Orange Along western half of no. boundary of 40 acre Valencia Orange grove at Bryant Ave. and Hansen Road. 9 Comment
  UC729889  Lactuca serriola Carl B. Wolf 1932-7-7 3839 Orange s edge of field 100 ft w Hansen Road; Bryant Ranch, Bixby Ave. 48 Comment
  CAS-BOT-BC340501  Lactuca serriola John Thomas Howell 1927-7-27 2855 Orange Hills on n. side of Santa Ana Canon [Canyon] 152 Comment
  RSA5937  Lactuca serriola C. B. Wolf 1932-7-7 3839 Orange Bryant Ranch, along drainage ditch on Bixby Ave.; 100 ft. W. of Hansen Rd.; 100 ft W of corner of NE 1/4 9 Comment
  RSA56  Lamarckia aurea J. T. Howell 1928-2-26 855 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC338904  Lasthenia californica Carl B. Wolf 1932-3-8 2677 Orange 1/2 mi. No. of Corona Del Mar. Borders of Newport Bay 7 Comment
  CAS-BOT-BC338906  Lasthenia californica Baker 1904-4-1 4088 Orange Anaheim Comment
  IRVC19035  Lasthenia californica T. Ackerman 1982-4-24 82 -261 Orange south of Live Oak Canyon Rd., trail road from Methodist Church. Santa Ana Mountains Comment
  RSA0013588  Lasthenia coronaria D. E. Bramlet 2008-4-15 4179 Orange Ridgeline 374m N of Hicks Cyn. Haul Rd. & 335m E of the Asphalt Plant 195 Comment
  UCR209358  Lasthenia coronaria Fred M. Roberts, D. E. Bramlet, Megan Lulow 2008-4-4 6844 Orange Lomas de Santiago, Loma Ridge, at Calochortus Ridge near East Lomas Ridge Road, 0.7 km east of Bee Peak, Irvine Ranch Conservancy 509 Comment
  RSA3172  Lasthenia glabrata subsp. coulteri C. B. Wolf 1932-3-8 2691 Orange Sunset Beach, near S city limits 2 Comment
  RSA0035853  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2012-5-5 12 -85 Orange city of San Clement, Antonio Parkway, c. 0.25 mi north of Hwy 74 88 Comment
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Apr 7 2021
  UCR170139  Lasthenia gracilis Jeffrey Ross, R. Zaka 1998-5-2 39 Orange South Coast, North side of San Joaquin Hills; William R. Mason Regional Park, near intersection of Yale Avenue and University Drive 27 Comment
  RSA545171  Lasthenia gracilis Timothy S. Ross, Amy Kendall 1992-4-15 6194 Orange San Clemente Island. Central upland portion of the island, SW of 'Ledge'; 236 degrees SW, ca 170m distant from summit of 'Ledge.' 393 Comment
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Apr 7 2021
  RSA292482  Lathyrus sphaericus James Henrickson 1972-10-21 8061 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
  RSA90347  Lathyrus vestitus subsp. alefeldii F. W. Peirson 1925-4-11 5731 Orange slope above mill, in Silverado Canyon, Santa Ana Mountains 914 Comment
  SFV17928  Lathyrus vestitus var. vestitus J. N. Hogue 1999-4-9 136 .2 Orange Santa Ana Mountains Silverado Canyon. Above Pine Canyon along Maple Springs Road. 700 Comment
  CAS-BOT-BC380858  Layia platyglossa P. C. Everett 1935-4-15 2349 Orange Atwood, 0.8 miles e. of Atwood on the south side of santa Fe R.R. 106 Comment
  IRVC22071  Layia platyglossa Fred M. Roberts, D. A. Roberts 1983-3-22 934 Orange San Juan Canyon, above Hwy 74, 2.7km ENE San Juan Guard Sta.; 3.6km SSW Sugar Loaf Pk., Santa Ana Mountains 407 Comment
  UC1543193  Layia platyglossa Donald G. Nelson 1935-3-30 196 Orange near mouth Brea Canyon (n of Brea, on Tonner Lease, in northern part of county); on Tonner Lease Comment
  RSA17056  Layia platyglossa subsp. campestris Percy C. Everett 1935-4-15 6462 Orange 8/10 mile E of Atwood on S side of Santa Fe RR. 107 Comment
  RSA705543  Leersia oryzoides R. E. Riefner Jr. 2003-12-14 3 -458 Orange Featherly Regional Park, Santa Ana River, vicinity of La Palma Avenue and Lomas de Yorba West, S of Gypsum Canyon Road. 105 Comment
  RSA0054938  Leonotis leonurus R. Engel 1934-10-10 s.n. Orange Santa Ana. Comment
  UC1608281  Lepechinia cardiophylla Steve Boyd and Kyle Boyd 1992-7-9 7653 Orange along main crest of range n Pleasants Peak (s of Oak Flat (aka Oat Flat), 3.5 mi s of junction of Main Divide and Skyline Rds.); Northern Santa Ana Mountains Comment
  RSA741724  Lepechinia cardiophylla R. E. Riefner Jr. 2008-6-12 8 -152 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fremont Canyon, Windy Ridge S to W fork canyon habitat. 515 Comment
  UC1719509  Lepidium densiflorum D. Atwood 1993-3-27 17692 Orange Corona del Mar State Park along Newport Coast Drive 0 Comment
  CAS-BOT-BC89063  Lepidium didymum Scott D. White 1998-3-24 6227 Orange University of California Irvine Campus. Site of proposed Research Park, southwest of main campus circle. 48 Comment
  CAS-BOT-BC89176  Lepidium draba P. B. Kennedy 1924-2-13 s.n. Orange Wintersberg. Comment
  IRVC25562  Lepidium nitidum Fred M. Roberts 1989-3-17 4209 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  UCR191339  Lepidium nitidum A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34648 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
  UCR191444  Lepidium nitidum A. C. Sanders, Fred M. Roberts 2008-4-8 34726 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  RSA184170  Lepidium nitidum I. L. Wiggins 1966-3-5 20511 Orange 1/2 mile W of El Toro along Hwy 18 Comment
  RSA0116223  Lepidium strictum Fred M. Roberts, Tony Bomkamp, R. E. Riefner 1996-4-19 4963 Orange Costa Mesa; Fairview Park, 0.1km W Canyon School 24 Comment
  UCSB52926  Lepidium virginicum Roberts, Jr., Fred 1983-3-16 Orange Laguna Beach, Sycamore Hills, central ridge; 1.1 km NNE jct. El Toro and Laguna Cyn. Rds.; 5.4 km. ESE Signal Peak 170 Comment
  CAS-BOT-BC329358  Lepidospartum squamatum Helen D. Geis 1902-1-1 s.n. Orange Santiago Canon Comment
  CAS-BOT-BC329359  Lepidospartum squamatum Helen D. Geis 1902-1-1 s.n. Orange Santiago Canon Comment
  OBI77796  Lepidospartum squamatum J. & B. Sample, B. Sample 1991-8-12 5591 Orange E of San Juan Capistrano on hwy 74 610 Comment
  RSA789590  Leptochloa fusca subsp. fascicularis R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49632 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  UCSB48232  Leptochloa fusca subsp. uninervia Roberts, Fred 1981-5-2 Orange Mission Viejo; Camino Capistrano, 1.5 km N Crown Valley Parkway 49 Comment
  RSA698316  Leptodactylon californicum Minor Warne 1934-4-7 s.n. Orange Santiago Canyon. Comment
  SEINET3479036  Leptodactylon californicum W. P. Vestal, A. G. Vestal 1955-3-24 3461 Orange El Toro, El Toro, about 5 miles east Comment
  RSA12929  Leptosiphon androsaceus C. B. Wolf 1935-4-7 6319 Orange Mouth of San Juan Hot Springs Canon, at san juan Hot Springs 213 Comment
  POM364668  Leptosiphon floribundus subsp. glaber Anstruther Davidson 3068 Orange Modjesta Ranch. Comment
  UCR256935  Leptosiphon parviflorus Naomi Fraga 2009-5-11 2718 Orange Santa Ana Mountains, Cleveland National Forest, San Juan Loop Trail just west of Sugarloaf Spur Trail 912 Comment
  UC1873114  Limonium R. E. Riefner Jr. 2006-8-11 06 -386 Orange Upper Newport Bay. E of Back Bay-Bayside Dr., flats along Big Canyon Creek 5 Comment
  RSA401667A  Limonium californicum F. R. Fosberg 1931-8-19 7284 Orange Newport Bay. 0 Comment
  SD80979  Limonium californicum Ted H. Thorsted Jr. 1970-8-17 33 Orange ca. 4 miles south of Seal Beach, NE of Pacific Coast Hwy at Bolsa Chica Salt Marsh Comment
  RSA743510  Limonium perezii Fred M. Roberts 2008-4-9 6861 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 45 Comment
  UCR129919  Limonium ramosissimum R. E. Riefner Jr. 2002-5-2 20- 92 Orange Upper Newport Bay, Jamboree Rd. at Bayview Dr., edge of Newport Beach Q. 21 Comment
  CAS-BOT-BC226774  Linanthus californicus B. D. Stark 1931-3-12 1938 Orange West slope of Santa Ana Mts., 3 mi. no. of Modjeska's Home 304 Comment
  CAS-BOT-BC226776  Linanthus californicus Helen D. Geis 1902-4-1 s.n. Orange Santa Ana River Canon [Canyon] Comment
  RSA584716  Linanthus californicus subsp. glandulosus Fred M. Roberts 1989-5-18 4370 Orange Santa Ana Mountains: Upper Gypsum canyon, above ridge road, ca. 6.4 km WSW Sierra Peak. 415 Comment
  UCR266297  Linanthus dianthiflorus D. E. Bramlet, J. E. Harrison 2008-4-3 4155 Orange Peninsular Range; Santa Ana Mountains, South Bee Canyon, Bowerman landfill site, 1.2 km south of the Bee Canyon access road, and 122 m west of the active landfill 224 Comment
  POM279123  Linanthus dianthiflorus subsp. dianthiflorus Lyman Benson 1932-3-26 3192 Orange Dana Point. 60 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
  UCR37803  Linanthus liniflorus Steve Boyd, L. F. LaPre 1981-5-27 s.n. Orange Santa Ana Mtns., Northern end of the Santa Ana Mtns., along powerline road on ridges east of Weir Canyon & at the head of Gypsum Canyon. Comment
  UCR209366  Linanthus parviflorus Fred M. Roberts, Linda Farley 2008-3-28 6833 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
  UCR175058  Linaria canadensis Vanessa Lee 2005-4-24 s.n. Orange South Coast, Crystal Cove, Laguna Beach, above Pacific Coast Highway 61 Comment
  RSA797821  Lithophragma affine subsp. mixtum R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49810 Orange Santa Ana Mountains: Trabuco Canyon Comment
  IRVC16249  Lobelia dunnii var. serrata Karlin G. Marsh 1977-9-23 Orange Holy Jim Canyon, Holy Jim Falls. Santa Ana Mountains Comment
  IRVC298  Lobelia dunnii var. serrata R. Acevedo 1965-4-3 Orange east bluff. Newport Beach Comment
  POM193486  Lobelia dunnii var. serrata Helen E. Sweet 1928-08 s.n. Orange Santiago Canyon. Comment
  CHSC35329  Lolium multiflorum James Henrickson 1972-10-21 8063 Orange Newport Beach, So. of Jamboree Rd., E. of Irvine Coast Country Club near U.C. Irvine. In grassland eventually to be used for large Newport Beach Business Center. 45 Comment
  RSA731970  Lolium perenne A. C. Sanders, Fred M. Roberts 2008-4-8 34735 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  UCR100179  Lolium perenne Scott D. White 1993-3-5 1125 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  UCR131729  Lolium perenne C. B. Wolf 1932-7-7 03858 Orange South Coast, Bryant Ranch, Bryant Ave, at pump house 0.5 mi. east of Los Alamitos Blvd. 6 Comment
  RSA184121  Lolium perenne I. L. Wiggins 1965-10-24 20290 Orange At corner of Yorba Linda and State College Blvds., Fullerton Comment
  UCR170137  Lolium perenne subsp. multiflorum Jeffrey Ross, R. Zaka 1998-5-2 47 Orange South Coast, North side of San Joaquin Hills; William R. Mason Regional Park, near intersection of Yale Avenue and University Drive 27 Comment
  UCR193070  Lolium perenne subsp. multiflorum A. C. Sanders, Mitch Provance 2008-5-20 35419 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  POM265760  Lolium perenne subsp. multiflorum J. C. Roos 1937-5-10 2077 Orange Tustin Comment
  RSA6065  Lolium perenne subsp. multiflorum C. B. Wolf 1932-6-13 3717 Orange Storm drain at Malvern and Nicholas Aves; Fullerton. 53 Comment
  UCR193390  Lolium perenne subsp. perenne A. C. Sanders, T. B. Salvato 2008-5-13 35332 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
  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
  RSA734616  Lolium temulentum Keith E. Hoffmaster 1927-4-26 39 Orange Santa Ana. Comment
  UCD66645  Lolium temulentum A. A. Beetle 1942-4-19 3093 Orange 20 miles S of Santa Ana, road to Laguna. Comment
  POM265762  Lolium temulentum J. C. Roos 1937-5-21 2068 Orange Lemon Heights Comment
  RSA0011623  Lolium temulentum Rankin s.n. Orange Costa Mesa. Comment
  RSA49093  Lomatium dasycarpum subsp. dasycarpum P. A. Munz 1949-5-26 13377 Orange Head of Sierra [Freemont] Canyon, Santa Ana Mountains. 732 Comment
  RSA0105319  Lomatium lucidum J. D. Olmsted 1959-5-1 518 Orange 500 yards west of Oat Flat past Johnson s dam; 9 mi. SW of Corona. Santa Ana Mountains. Drainage area: to Irvine Res. 792 Comment
  RSA697262  Lonicera subspicata Keith E. Hoffmaster 1934-4-22 s.n. Orange Santa Ana Mountains. Comment
  RSA697263  Lonicera subspicata Keith E. Hoffmaster 1933-5-27 s.n. Orange Santa Ana Mountains. Comment
  UCR230833  Lonicera subspicata Dick Newell, Judy Booth 2011-6-19 178 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Rd., Cleveland National Forest, above Santiago Canyon 763 Comment
  RSA220958  Lonicera subspicata var. denudata E. W. Lathrop s.n. Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, trabuci District. Comment
  RSA5337  Lonicera subspicata var. denudata B. D. Stark 1933-1-4 4489 Orange Ridge above Claymine Canyon. No. end of Santa Ana Mts. 213 Comment
  UCR26985  Lonicera subspicata var. johnstonii E. W. Lathrop 1966-1 6187 Orange 4 mi NE of Lake Irvine, Black Star Canyon, Cleveland National Forest. Comment
  UC1543240  Lotus hamatus Donald G. Nelson 1935-4-14 286 Orange facing Newport Bay and the ocean (along main coast highway); Newport Beach Comment
  UCR173936  Lotus heermannii A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33005 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
  RSA0036647  Lotus heermannii Robt. Allen, Richard Newell 2009-7-11 s.n. Orange Peninsular Ranges; Santa Ana Mountains regions: Upper Santiago Canyon, just past community of Modjeska Canyon, Fleming Ranch, East end of Modjeska Canyon Road. 621 Comment
  RSA679091  Lotus heermannii var. heermannii Fred M. Roberts 2003-7-24 5968 Orange San Juan Capistrono: San Juan Creek, c.a. 0.1 km NE La Novia Bridge. Along creek on cobbly sand of wash in open southern willow scrub and mulefat scrub. 27 Comment
  RSA754059  Lotus purshianus A. C. Sanders, Fred M. Roberts 2008-7-16 35854 Orange Lomas de Santiago, upper Hangmans Tree Canyon. 395 Comment
  UC1543068  Lotus purshianus var. purshianus Donald G. Nelson 1935-7-5 345 Orange E. Elm St., Brea Brea Comment
  POM1916  Lotus salsuginosus I. M. Johnston 1918-5-4 1932 Orange Laguna Beach Comment
  RSA734858  Lotus salsuginosus A. C. Sanders, Mitch Provance 2008-5-20 35406 Orange Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 345 Comment
  RSA749302  Lotus salsuginosus Fred M. Roberts 1999-4-21 5181 Orange Lomas de Santiago: Loma Ridge, ridges north of Dripping Springs Cyn., 1.5 km W Silverado Sch. and 4.8 km NNW Bolero Lookout. 365 Comment
  UCR191238  Lotus salsuginosus A. C. Sanders, Fred M. Roberts 2008-4-22 34988 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  RSA697977  Lotus scoparius Jeanne Paxton 1934-2-25 s.n. Orange Sugar Loaf Canyon, Arch Beach Comment
  RSA590947  Lotus scoparius Fred M. Roberts 1991-3-2 4778 Orange San Joaquin Hills: Laguna Canyon, Laguna Laurel, just west of Laguna Canyon Road, ca. 2 km N jct. El Toro Road, 4.5 km E Signal Peak. 110 Comment
  RSA732275  Lotus scoparius subsp. brevialatus A. C. Sanders 2008-4-29 35121 Orange Lomas de Santiago, western end of Loma Ridge on road to sheriffs training facility, c. 1.5 mi. SW of Santiago Reservoir. 335 Comment
  UCR191227  Lotus scoparius subsp. brevialatus A. C. Sanders 2008-4-29 35121 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
  UCR223427  Lotus scoparius subsp. scoparius Dick Newell, Don Millar 2011-2-15 059 Orange South Coast, San Joaquin Hills, Laguna Wilderness Park, along Stagecoach Trail 131 Comment
  IRVC2251  Lotus scoparius subsp. scoparius C. Hinesly 1965-1-30 Orange [Newport] Back Bay. Newport Beach Comment
  JEPS55878  Lotus strigosus Alice King Mar 1908 Orange Anaheim plains Anaheim Comment
  RSA406321  Lotus strigosus M. B. Dunkle 1933-3-5 3087 Orange San Juan Canyon 304 Comment
  RSA649262  Lotus strigosus T. Pringle 1966-3-22 68 Orange In Silverado Canyon Comment
  RSA753164  Lotus strigosus D. E. Bramlet 2008-4-1 4146 Orange Ridgeline in Upper Hicks Canyon, 162m S of the Haul Road. 346 Comment
  UC1544837  Lotus strigosus A. G. Vestal 1962-4-8 Orange 1.3 mi n Elsinore 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
  UCR190969  Lotus strigosus A. C. Sanders, Fred M. Roberts 2008-4-22 35053 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge c. 1/4 mi. SE of VABM Bee, above Bee Canyon landfill on road from Hicks Canyon Haul Rd. to Limestone Canyon, c. 3.5 miles WSW of Silverado 493 Comment
  UCR191332  Lotus strigosus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34615 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
  IRVC21292  Lotus strigosus var. strigosus Fred M. Roberts, Karlin G. Marsh 1984-2-15 1201 Orange Casper's Regional Park: Rancho: Rancho Carrillo Rd., 1.0km NE Visitor Center; 3.0km SW Lucas Survey Mark, Santa Ana Mountains 150 Comment
  IRVC22013  Lotus strigosus var. strigosus Fred M. Roberts, Gordon Marsh 1985-3-12 1507 Orange mesa west of Ave. Pico and north of El Camino Real, 3.2km SSE Coyote Bluff; 0.6km E Bench Mark 16 (sect. 32), San Clemente 37 Comment
  RSA406435  Lotus unifoliolatus M. B. Dunkle 1934-6-18 3988 Orange San Juan Canyon; Southern Coastal 305 Comment
  RSA564320  Lotus unifoliolatus B. Pitzer 1992-5-27 1966 Orange Cleveland National Forest. Along road (3S04) to Blue Jay Group Campground, off State Hwy 74 (Ortega Hwy). Approx. 2 mi. (airline) W of El Cariso Campground. 762 Comment
  UC1608265  Lotus wrangelianus Steve Boyd and Tim Ross 1992-5-20 7485 Orange Lucas Canyon at the Lucas Canyon Trail crossing, just downstream from crossing, w edge of the San Mateo Canyon Wilderness Area Southern Santa Ana Mountains, San Mateo Canyon Wilderness Ar 320 Comment
  SD175839  Ludwigia peploides D. G. Kelch 2006-12-9 06 561 Orange Irvine. University Drive along tidal Creek just east of Interstate 73. 9 Comment
  UCSB10696  Lupinus Robert M. Lloyd 1959-4-17 207 Orange collected in the Black Star Canyon of the Santa Ana Mountains Black Star Canyon 640 Comment
  JEPS65411  Lupinus bicolor Alice King 1908-4-18 Orange Santa Ana Mts. Comment
  RSA734685  Lupinus bicolor A. C. Sanders, T. B. Salvato 2008-5-13 35340 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
  UC1287120  Lupinus bicolor C. L. Hitchcock 1966-3-15 24135 Orange 1/2 mi e Brea; e of Brea Comment
  RSA699681  Lupinus bicolor subsp. microphyllus Keith E. Hoffmaster 1927-4-3 s.n. Orange Buena Park, San Onofre. Comment
  IRVC22012  Lupinus bicolor subsp. umbellatus Fred M. Roberts, Gordon Marsh 1985-3-12 1506 Orange mesa west of Ave. Pico and north of El Camino Real, 3.2km SSE Coyote Bluff; 0.6km E Bench Mark 16 (sect. 32), San Clemente 37 Comment
  SEINET10484966  Lupinus bicolor subsp. umbellatus Beauchamp 1972-3-24 BEAUCHAMP 3238 Orange On dry slopes at thirst, san clemente island. 600 Comment
  IRVC21215  Lupinus bicolor subsp. umbellatus Fred M. Roberts 1984-3-9 1241 Orange Wagon Wheel Regional Park: 2.6km NE Median Rancho Survey Mark, Santa Ana Mountains 210 Comment
  IRVC15179  Lupinus concinnus subsp. concinnus K. Conrey 1975-4-20 s.n. Orange Skyline Ranch Southern Coastal Comment
  RSA564322  Lupinus excubitus var. excubitus B. Pitzer, S. Hemstreet 1992-12-23 1964 Orange Cleveland National Forest. Along road 3S04 to Blue Jay Group Campground, off State Hwy 74 (Ortega Hwy). Approx. 2 airline miles W of El Cariso Campground 762 Comment
  POM2477  Lupinus excubitus var. hallii Edward L. Greene 1903-4-1 4102 Orange Anaheim 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
  CAS-BOT-BC217742  Lupinus longifolius E. R. Johnson 1932-4-15 2957 Orange 1 mi. NW of Roundtop, Rancho Santa Ana, Santa Ana Canyon 457 Comment
  RSA4865  Lupinus longifolius E. R. Johnson 1932-4-15 2956 Orange Rancho Santa Ana, 1mile NWof Roundtop (section 16) 457 Comment
  RSA749358  Lupinus microcarpus var. microcarpus Fred M. Roberts 2008-4-15 6897 Orange Lomas de Santiago: Loma Ridge, Lower Hicks Cyn., east ridge, 1.7 km E Rattlesnake Reservoir dam and 2.2 km W Bee Peak, Irvine Ranch Conservancy. 179 Comment
  JEPS65473  Lupinus microcarpus var. microcarpus H. E. Malmsten 1928-4-27 Orange O Neill Ranch Comment
  UC219306  Lupinus sparsiflorus P. A. Munz, R. D. Harwood 1920-4-25 3717 Orange Silverado Canyon; Santa Ana Mts., Silverado Canyon 548 Comment
  UCR266299  Lupinus sparsiflorus D. E. Bramlet 2008-3-26 4126 Orange Peninsular Range; Santa Ana Mountains, Bee Canyon, Bowerman landfill site. 202 m south of the Bee Canyon access road and 151 m west of the active landfill entrance 295 Comment
  IRVC2341  Lupinus sparsiflorus subsp. sparsiflorus J. Morgan 1965-4-13 s.n. Orange Laguna Canyon. Southern Coastal Comment
  POM156682  Lupinus sparsiflorus subsp. sparsiflorus L. R. Abrams 1903-4-19 3277 Orange San Juan Comment
  RSA86974  Lupinus sparsiflorus subsp. sparsiflorus F. W. Peirson 1923-5-5 3508 Orange Trabuco Canyon, Santa Ana Mts. 549 Comment
  IRVC2342  Lupinus succulentus 1965-4-18 HS 0416 Orange Trabuco Canyon. Santa Ana Mountains Comment
  UC1129752  Lupinus succulentus A. Lewis Mar 1934 348 Orange San Juan Hills; Corona Quad., San Juan Hills 396 Comment
  SEINET12154823  Lupinus succulentus J. F. Bright, Wyman, C. 1933-1 8101 Orange Santa Ana foothills Comment
  IRVC24509  Lupinus truncatus Fred M. Roberts, Gordon Marsh 1986-2-28 2613 Orange Lateral to English Canyon along Vista Del Lago; 3.4km ENE El Toro Fire Station, in ravine at base of north-facing slope. Mission Viejo 236 Comment
  RSA414369  Lupinus truncatus Fay A. MacFadden 2939 Orange Laguna Beach. Comment
  SBBG47485  Lupinus truncatus M. B. Dunkle 1935-3-3 4346 Orange San Juan Cyn 457 Comment
  SD143894  Lupinus truncatus Scott D. White 1997-3-28 4851 Orange Santas Ana Mountains; above Modjeska Canyon. 424 Comment
  UCR192498  Lupinus truncatus A. C. Sanders, Fred M. Roberts 2008-3-25 34566 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR203985  Lupinus truncatus Fred M. Roberts 2008-3-12 6726 Orange South Coast, Dana Point Headlands Center for Natural Lands Mgmt. Preserve, west side, c. 0.8 km west of Marine Institute, Dana Point Harbor 50 Comment
  RSA0055059  Lupinus truncatus James R. Shevock 1970-3-25 66 Orange Santa Ana Mountains. 381 Comment
  SD155417  Lycium brevipes var. brevipes Craig Reiser 2001-3-21 Orange San Clemente, south of the intersection of Calafia and Ola Vista. Comment
  CAS-BOT-BC233468  Lycium californicum Carl B. Wolf 1932-3-8 2686 Orange 1/2 mi. No. of Corona Del Mar, borders of Newport Bay 7 Comment
  RSA0014835  Lythrum californicum Keith E. Hoffmaster 1927-6-26 452 Orange [Unspecified] Comment
  RSA0014846  Lythrum californicum P. A. Munz 1918-5-4 2206 Orange Laguna. Near pond. Comment
  UCR174024  Lythrum hyssopifolia A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33047 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
  UCR193072  Lythrum hyssopifolia A. C. Sanders, Mitch Provance 2008-5-20 35422 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-BC206251  Malacothamnus fasciculatus Louis C. Wheeler 1932-7-9 941 Orange Santa Ana River, 5 mi. below Prado 152 Comment
  CAS-BOT-BC206254  Malacothamnus fasciculatus Louis C. Wheeler 1932-7-9 941 Orange Santa Ana River, 5 mi. below Prado 152 Comment
  RSA433316  Malacothamnus fasciculatus Albert J. Perkins 1923-6-28 s.n. Orange Laguna Cliffs Comment
  OBI12363  Malacothamnus fasciculatus var. laxiflorus Robert F. Hoover 1968-6-10 11172 Orange Laguna Beach Comment
  CAS-BOT-BC322561  Malacothrix saxatilis var. saxatilis B. Pitzer; M. Georgiady 1997-4-5 3076 Orange Crystal Cove state Park along No Dogs Trail to just below intersection with Poles trail, San Joaquin Hills 152 Comment
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Nov 7 2017
  UCR130492  Malacothrix saxatilis var. saxatilis R. E. Riefner Jr. 1999-5-22 99- 289 Orange South Coast, city of Dana Point, west of Pacific Coast Hwy, vicinity of Salt Creek Park and Ritz Carlton Hotel 15 Comment
  RSA647890  Malacothrix saxatilis var. tenuifolia Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-25 60 Orange 1/2 mile south of Chino Hills State Park Boundary 229 Comment
  RSA678507  Malephora crocea Valerie Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary D. Wallace 2001-4-4 1106 Orange Seal Beach National Wildlife Refuge: Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  RSA702984  Malosma laurina D. E. Bramlet 2004-5-27 3594 Orange Donna O Neill Reserve. Southwest corner of the reserve, just east of the Telaga development. The site is 1.43km west of Cristianitos Rd. and 1.37km north of Pico. 183 Comment
  RSA716498  Malva nicaeensis Fred M. Roberts 2005-5-13 6189 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
  UCR103163  Malva parviflora Scott D. White 1997-3-26 4812 Orange Univ. of Calif. Irvine Campus, east of main campus at site of proposed student recreation center, east of main campus, between California Avenue and Culver Drive. 40 Comment
  UCR109662  Malva parviflora G. S. Nuessly 1980-11-27 s.n. Orange Tustin. SE corner of 17th St. and Yorba Ave. 52 Comment
  UCR193003  Malva parviflora A. C. Sanders, Fred M. Roberts 2008-6-17 35456 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  POM2951  Malvella leprosa D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon Comment
  CHSC19526  Marah macrocarpa T. Casale 1974-4-11 1 Orange Ca. 4.1 mi ne of the Mission SanJuan Capistrano on Hwy. 74. 170 Comment
  RSA184100  Marrubium vulgare I. L. Wiggins 1965-11-6 20347 Orange Near well #14, Kramer Oil Estates, near end of county road to Rancho Santa Ana. Comment
  RSA697834  Marrubium vulgare Minor Warne 1934-4-14 s.n. Orange Laguna Canyon Forks. Comment
  CAS-BOT-BC536064  Marsilea drummondii R. E. Riefner, Jr. 2008-6-22 08 -209 Orange City of Yorba Linda, Santa Ana Canyon, Santa Ana River, La Palma Ave., near Old Village Road 95 Comment
  RSA85842  Marsilea vestita F. W. Peirson 1924-5-31 4645 Orange Laguna Canyon, near Laguna Beach 106 Comment
  POM903  Marsilea vestita P. A. Munz 1918-5-5 2187 Orange edge of pond above Laguna Comment
  RSA731948  Marsilea vestita subsp. vestita Fred M. Roberts, Carol A. Roberts 1991-5-22 4800 Orange San Joaquin Hills: Upper Laguna Cyn., Upper Laguna Lake, c.a. 3.6km N by road of El Toro Rd. & 5km ENE Signal Peak. 118 Comment
  CAS-BOT-BC348167  Matricaria discoidea Ira L. Wiggins 1966-3-4 20493 Orange Along shoulder of Peralta Avenue, near junction of Newport Freeway and Riverside Highway Comment
  SDSU6335  Matricaria discoidea R. M. Beauchamp 1968-2-17 775 Orange 7 miles east of intersection of Interstate #5 on El Toro Road. Comment
  RSA202176  Matricaria occidentalis L. M. Booth 1932-5-12 1011 Orange Newport Bay. Comment
  CAS-BOT-BC60301  Matthiola incana E. K. Balls 1955-4-4 20423 Orange West end of Newport Beach. 3 Comment
  POM7620  Meconella denticulata P. A. Munz, R. D. Harwood 1920-4-25 6719 Orange Shady hillside by road in Silverado Canyon, Santa Ana Mts. 549 Comment
  RSA733697  Medicago hispida Keith E. Hoffmaster 1927-2-17 439 Orange Santa Ana Comment
  RSA184088  Medicago lupulina I. L. Wiggins 1966-4-2 20578 Orange 1249 Luanne Avenue, Fullerton. Comment
  UCR192467  Medicago polymorpha A. C. Sanders, Fred M. Roberts 2008-3-25 34535 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  POM348035  Medicago polymorpha E. S. Spalding 1923-1-1 s.n. Orange Laguna Beach. Comment
  CAS-BOT-BC532580  Medicago truncatula A. C. Sanders; Fred M. Roberts 2008-4-8 34738 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 457 Comment
  UCR246483  Medicago truncatula R. E. Riefner Jr. 2011-5-20 11- 55 Orange South Coast, city of San Clemente, Avenida La Pata one block west of Calle Extremo at entrance to Richard Steed Memorial Park 161 Comment
  UCR140883  Melaleuca viminalis Robert DeRuff 1987-7-18 301 Orange Southern Coast, Newport Beach, Big Canyon, near Jamboree Road 11 Comment
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Jun 5 2006
  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
  RSA747626  Melica imperfecta Fred M. Roberts 2008-4-16 6906 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8km W Marine Institute, Dana Point Harbor. 45 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
  IRVC23313  Melilotus albus Fred M. Roberts 1985-7-23 2065 Orange Irvine; San Diego Creek between E Yale Loop and Jeffrey Rd. Southern Coastal 35 Comment
  IRVC2400  Melilotus albus Kathy Durica 1965-5-2 s.n. Orange Costa Mesa; Maple Ave. Southern Coastal Comment
  IRVC24248  Melilotus albus Fred M. Roberts, G. A. Marsh 1985-10-25 2505 Orange Santa Ana River; adjacent to Costa Mesa, 1.3km SSW Adams St. bridge, Southern Coastal 2 Comment
  RSA234512  Melilotus albus James Henrickson 1970-7-24 5007 Orange 3 miles NW of Huntington Beach on sandy ''Rabbit'' Island in Bolsa Chica Salt March near Inner Bolsa Bay. 1 Comment
  UC537003  Melilotus albus Lawrence M. Booth 1932-7-4 1252 Orange Newport Lagoon 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
  RSA699735  Melilotus albus Keith E. Hoffmaster 1927-2-12 s.n. Orange Santa Ana. Comment
  IRVC2407  Melilotus indicus D. Ibbetson 1965-4-12 s.n. Orange Newport Beach Southern Coastal Comment
  IRVC2417  Melilotus indicus D. Van Gorden 1965-5-2 s.n. Orange Costa Mesa; 18th Street. Southern Coastal Comment
  IRVC2426  Melilotus indicus Janet Bryant 1965-3-14 Orange Costa Mesa; Redlands Dr. and Santa Isabel. Southern Coastal Comment
  IRVC27499  Melilotus indicus Mark A. Elvin 2004-5-2 3410 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA678511  Melilotus indicus Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary D. Wallace 2001-4-4 1128 Orange Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  CLARK-A1528-981  Melilotus indicus Patricia A. Andrews 1975-6-26 5919 Orange Capistrano Bay Beach 9 Comment
  POM312088  Melilotus indicus Jane Shelton 1963-5-3 22 Orange El Morro Beach, Laguna, Alt 5ft 2 Comment
  SEINET7073428  Mentzelia affinis A. G. Vestal 1963-4-24 s.n. Orange La Paz Canyon, Rancho Mission Viejo. Coordinate datum: NAD27. Comment
  RSA16494  Mentzelia dispersa Percy C. Everett 1935-6-18 7213 Orange Santa Ana Mts: Summit of Santiago Peak. 1732 Comment
  JEPS42917  Mesembryanthemum crystallinum L. M. Booth 1932-6-29 1224 Orange Newport Bay Comment
  POM201709  Mesembryanthemum crystallinum L. M. Booth 1932-6-29 1224 Orange Newport Bay. Comment
  RSA743512  Mesembryanthemum crystallinum Fred M. Roberts 2008-4-9 6864 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 45 Comment
  RSA696448  Mesembryanthemum crystallinum Minor Warne 1934-5-6 s.n. Orange Bluffs Corona Del Mar Comment
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Jun 24 2009
  POM201702  Mesembryanthemum nodiflorum L. M. Booth 1932-8-5 s.n. Orange West Newport Beach. Comment
  RSA65535  Mesembryanthemum nodiflorum F. W. Peirson 1920-6-25 2209 Orange 5 miles south of San Juan Capistrano. Comment
  UCSB16200  Mesembryanthemum nodiflorum Valentine, D. 1963-4-14 Orange 2.1 mi. S. junction U.S. 101 and 101A, 1.5 mi. N. of San Clemente 6 Comment
  RSA588725  Micropus californicus Fred M. Roberts 1990-5-7 4605 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
  RSA588793  Micropus californicus Fred M. Roberts 1990-4-18 4567 Orange Rancho Mission Viejo: Chiquita Ridge, just west of Canada Chiquita, 2.5km SSE Median Rancho Survey Marker. 91 Comment
  UC149198  Microseris douglasii subsp. douglasii LeRoy Abrams 1903-4-18 3262 Orange near Capistrano (Trabuco arroyo); Trabuco Comment
  RSA708226  Microseris douglasii subsp. platycarpha Fred M. Roberts, Robert L. Allen, Chris M. Barnhill, Carol A. Roberts 2005-4-10 6167 Orange Costa Mesa: Fairview Park, west of north end of Canyon Drive, c.a. 0.2km WNW Marison Special Education Center (Canyon Sch. on topos). 24 Comment
  UCR208155  Microseris douglasii subsp. platycarpha Fred M. Roberts, D. E. Bramlet 2003-3-27 5621 Orange Coastal Plains & Basins; South Coastal Plain region, Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.79km N Sycamore Gate, 0.23km W Cristianitos Rd. 126 Comment
  UCR177425  Microseris heterocarpa Scott D. White, Amanda Duchardt 2003-3-27 8850 Orange Peninsular Ranges/Santa Ana Mtns, Canyon bottom and W-facing slopes above Canada Gobernadora 183 Comment
  RSA785531  Microseris lindleyi Doris Bowers 1971-4-19 1683 Orange Black Star Canyon Indian Site 762 Comment
  RSA606307  Microsteris gracilis subsp. gracilis Jon E. Keeley 1994-4-5 25264 Orange First year burn, east end of Caspers Park S-7 (Keeley 1994). 215 Comment
  UC445115  Mimulus H. M. Hall 1913-5-28 9405 Orange Santiago Canyon Comment
  SEINET7067515  Mimulus aurantiacus A. G. Vestal 1947-6-12 s.n. Orange San Juan Canyon. Coordinate datum: NAD27. UTM Zone 11, 448887mE, 3712881mN. Comment
  HSC20693  Mimulus aurantiacus subsp. australis J. J. Wagoner 1965-4-11 22 Orange Modjeska Canyon, 1 mi. S of Irvine Rd. 152 Comment
  RSA0056606  Mimulus aurantiacus subsp. australis P. Shirokawa 1998-4-24 5 Orange Cleveland National Forest. Trabuco Ranger District, 2.35 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 991 Comment
  RSA0013911  Mimulus aurantiacus var. pubescens Fred M. Roberts 2012-4-24 803784 Orange San Joaquin Hills: Buck Gully, tributary canyon below San Joaquin Hills Road and 2.0 km W Signal Peak 167 Comment
  RSA131398  Mimulus aurantiacus var. pubescens E. K. Balls 1958-6-27 23279 Orange Road to Santiago Peak from Silverado Canyon, 3.8 mi. from gate. 976 Comment
  RSA551154  Mimulus aurantiacus var. pubescens David M. Thompson 1992-5-16 1068 Orange 0.6 mi. SW of San Bernardino Co. line along Carbon Canyon Rd. (Hwy 142). 229 Comment
  RSA67767  Mimulus aurantiacus var. pubescens G. R. Campbell 1951-5-30 16080 Orange San Juan Canyon, Ortega Hwy, 4 mi. inside west border of Cleveland National Forest 152 Comment
  RSA442701  Mimulus aurantiacus var. puniceus T. W. Minthorn 1913-4-26 s.n. Orange Santiago Creek. Comment
  RSA503159  Mimulus aurantiacus var. puniceus Gary D. Wallace, G. Cromwell 1966-4-16 455 Orange W edge of Cleveland Nat. For. about 5 mi. E of San Juan Capistrano, in the Santa Ana Mountains, in Hot Springs Canyon. Comment
  RSA542496  Mimulus cardinalis Bernard Jaroslow 1989-7-4 B- 26 Orange Santiago Canyon: near upper Santiago Creek. Comment
  RSA753971  Mimulus cardinalis A. C. Sanders, Fred M. Roberts 2008-7-16 35835 Orange Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin. 391 Comment
  UCR237814  Mimulus cardinalis Dick Newell, Judy Booth 2012-7-15 281 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, on Maple Springs Road 0.84 mi. NE of Maple Springs gate 638 Comment
  RSA759108  Mimulus cardinalis Robt. Allen, Reginald Durant 2008-9-28 s.n. Orange Laurel Spring, just below Harding Truck Trail. Survey Waypoint no. 85. Comment
  UC718321  Mimulus clevelandii P. C. Everett 1936-8-28 8233 Orange head Trabuco Canyon (Mian Divide Motorway); Santa Ana Mts. 1158 Comment
  UCR230839  Mimulus clevelandii Dick Newell, Judy Booth 2011-6-19 181 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Rd., Cleveland National Forest, above Santiago Canyon 1086 Comment
  JEPS87315  Mimulus clevelandii David M. Thompson 1992-5-16 1065 Orange Santa Ana Mountains, 3.9 mi N and W of Highway 74 along USFS Road 3S04 (the N side of paved loop allowing access to the main Divide Road). Comment
  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
  UCR193763  Mimulus floribundus A. C. Sanders, Fred M. Roberts 2008-7-3 35709 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
  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
  RSA637487  Minuartia douglasii Valerie L. Soza, LeRoy Gross 1999-6-10 512 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off Main Divide Road. 1524 Comment
  SEINET11941951  Mirabilis californica J. F. Bright, Wyman, C. 1933-1 8105 Orange In Santa Ana Foothills Comment
  HSC16156  Mirabilis laevis C. L. Hitchcock, C. V. Muhlick 1964-3-17 23061 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  RSA734915  Mirabilis laevis A. C. Sanders, Fred M. Roberts 2008-4-22 34994 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
  JEPS61334  Mirabilis laevis var. crassifolia L. M. Booth 1932-5-12 1035 Orange Newport Bay Comment
  RSA0073649  Mirabilis laevis var. crassifolia Fred M. Roberts 2010-3-12 7178 Orange Southeast Coast: Dana Point Headlands: Harbor Point Park, South of Green Lantern and west of Dana Point Harbor, c.a. 150 meters SE Interpretive Center. 50 Comment
  RSA465231  Mirabilis laevis var. crassifolia M. B. Dunkle 1933-3-5 3078 Orange San Juan Canyon 305 Comment
  RSA737549  Mirabilis laevis var. crassifolia Fred M. Roberts 2008-3-12 6712 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  SBBG93266  Mollugo verticillata D. G. Nelson 1936-7-26 442 Orange mesa N of Newport Beach, Costa Mesa Comment
  UC1543025  Mollugo verticillata Donald G. Nelson 1936-7-26 442 Orange n of Newport Beach (Costa Mesa); Costa Mesa Comment
  CDA3375  Mollugo verticillata G. D. Barbe 1973-8-9 1695 a Orange Bordier s Nursery, 7231 Irvine Blvd., Santa Ana (Tustin). 0 Comment
  RSA0010775  Mollugo verticillata P. A. Munz 1922-9-2 6357 Orange Ponds in Laguna Canyon. 46 Comment
  SD119375  Monardella breweri subsp. lanceolata Reid Moran 1977-6-13 24236 Orange Willow Canyon, tributary of Laguna Canyon. 124 Comment
  RSA759153  Monardella hypoleuca 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
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Aug 13 2012
  CAS-BOT-BC249028  Monardella hypoleuca subsp. intermedia A. C. Sanders; Fred M. Roberts 2008-7-3 35681 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 Comment
  SD239801  Monardella hypoleuca subsp. intermedia A. C. Sanders, Mark A. Elvin 2005-9-2 31613 Orange Santa Ana Mountains: near head of Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks, below the towers on Santiago Peak (Santiago Peak 7.5'Q) 997 Comment
  UCR158808  Monardella hypoleuca subsp. intermedia A. C. Sanders, Mark A. Elvin 2005-9-2 31607 Orange Santa Ana Mtns., upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks 820 Comment
  RSA67  Muhlenbergia asperifolia J. T. Howell 1927-7-19 446 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  UCD86558  Muhlenbergia asperifolia F. M. Reed 1927-9-19 5470 Orange Canal Bank, opposite Peralta Heights. 91 Comment
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May 1 2011
  UCR205983  Muhlenbergia asperifolia R. E. Riefner Jr. 2000-3-26 20- 150 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of major stream fork along west channel drainage 335 Comment
  CAS-BOT-BC275291  Muhlenbergia microsperma J. C. Nevin 1904-1-1 s.n. Orange Newport Bluff Comment
  SEINET3402284  Muilla maritima L. Abrams 1903-4-18 3263 Orange Capistrano Comment
  RSA0059070  Myoporum CNPS Accuracy Assessment Team 2014-7-9 9547 Orange Talbert Nature Preserve. Comment
  UCR48000  Myoporum laetum Jack Easton 1987-4-21 s.n. Orange Southern Coast, Kain property, San Clemente, mouth of Trafalgar Canyon, just behind the beach 30 Comment
  UCR51539  Myosotis R. Ascanio 1988-5-25 s.n. Orange Hwy 74 c. 5 mi east of San Juan Capistrano Comment
  UCR157698  Nama stenocarpa Adrian Wolf 1998-7-1 414 Orange South Coast, Peters Canyon Channel, east of channel between Alton and Barranca, west of Harvard 12 Comment
  UCSB52916  Nassella lepida Roberts, Fred 1983-3-10 Orange Dana Point Headlands; south of Scenic Drive, 0.3 km W Dana Point Harbor; 0.8 km S Richard Henry Dana School 60 Comment
  RSA732065  Nassella pulchra A. C. Sanders, Fred M. Roberts 2008-3-25 34512 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA743513  Nassella pulchra Fred M. Roberts 2008-4-9 6863 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 45 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
  UCD87541  Nassella pulchra C. L. Hitchcock 1966-3-15 24142 Orange Stearns Lease, 1.5 miles east of Brea. Comment
  IRVC29691  Nasturtium Barry S. Nerhus, Mark A. Elvin 2006-11-4 3 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA710410  Nasturtium officinale Fred M. Roberts 2005-10-3 6298 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
  RSA0037244  Nasturtium officinale Keith E. Hoffmaster 1927-6-13 s.n. Orange Santa Ana. Comment
  RSA703643  Nasturtium officinale R. E. Riefner Jr. 2003-11-30 3 -482 Orange Peters Canyon Channel at Alton St., E of Jamboree Rd. near Irvine City Hall. 22 Comment
  RSA592109  Navarretia atractyloides R. E. Riefner 1994-4-15 94 -338 Orange NE of Moulton Meadow Park, Nyes Place Road, City of Laguna Beach. Comment
  RSA759149  Navarretia atractyloides Robt. Allen, D. Taylor 2008-7-19 s.n. Orange Along North Main Divide Road, 0.2 road miles S of junction with Bedford Rd, 3.5 road miles N of junction with Maple Springs Road, 0.84 air miles WNW of Bald Peak. Labeled on USGS Topo map as Water Tank, near BM 3702. 1142 Comment
  RSA799626  Navarretia prostrata Justin M. Wood 2011-4-12 3657 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  UCR207192  Nemacaulis denudata var. denudata O. F. Clarke 2004-7-19 s.n. Orange South Coast, Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach 4 Comment
  UCR230830  Nemacaulis denudata var. denudata Dick Newell 2011-6-17 176 Orange South Coast, Bolsa Chica Beach, Pacific Coast Hwy near Santa Ana River 5 Comment
  RSA734280  Nemacladus ramosissimus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34643 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 250 Comment
  RSA2081  Nemophila menziesii Carl B. Wolf 1931-3-6 1848 Orange Trabuco Canyon, 1 mile below Trabuco Camp Grounds, west slope of Snata ana Mts. 610 Comment
  UC1607998  Nemophila menziesii Donald G. Nelson 1935-3-16 164 Orange n Fullerton; n of Fullerton 60 Comment
  RSA421357  Nemophila menziesii M. B. Dunkle 1935-2-10 4329 Orange El Toro. Comment
  RSA610229  Nemophila menziesii Fred M. Roberts, Tony Bomkamp 1997-3-19 4990 Orange Rancho Mission Viejo: Canada Gobernadora, east slope. 1.7 km SW Cliff Survey Mark, 1.7 N Calf. Route 74. 122 Comment
  RSA749469  Nemophila menziesii subsp. menziesii Fred M. Roberts 1999-4-22 5189 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
  IRVC148  Nephrolepis cordifolia Lorraine Aldis 1965-3-30 HS 542 Orange Costa Mesa; Senate Street. Southern Coastal Comment
  RSA0060642  Nephrolepis cordifolia Richard E. Riefner 2011-8-25 11 -120 Orange City of Laguna Beach, Aliso Beach County Park, bluff ca. 0.15 mi. SE of Aliso Way, NW ca. 0.25 mi. of West St. 10 Comment
  UC2041999  Nephrolepis cordifolia R. E. Riefner Jr. 2014-6-14 14 -171 Orange City of Newport Beach, Cliff Drive Park, along Cliff Dr. near Beacon St. Comment
  UCR266153  Nephrolepis cordifolia R. E. Riefner Jr. 2014-6-14 14- 171 Orange South Coast, city of Newport Beach, Cliff Drive Park, along Cliff Drive near Beacon Street 44 Comment
  IRVC154  Nephrolepis exaltata var. bostoniensis L. Burns 1965-5-1 s.n. Orange Corona del Mar; Cameo Shores. Southern Coastal Comment
  RSA0026262  Nerium oleander Fred M. Roberts 2013-6-12 7787 Orange Peninsular Ranges: Santa Ana Mtns: Lower Silverado Canyon along Silverado Creek on north side of Silverado Canyon Road, 0.6 kilometers ENE Silverado School and 1.4 kilometers up stream Black Star Road Crossing. 320 Comment
  RSA741478  Nerium oleander R. E. Riefner 2008-5-30 8 -124 Orange Near City of Orange, Santiago Creek, vicinity of Jackson Ranch Rd. , at Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
  RSA733727  Nicotiana bigelovii Betty Niedergall 1932-5-3 s.n. Orange Hills of Orange County Park Comment
  RSA0020230  Nicotiana clevelandii Philip A. Munz 1923-4-4 s.n. Orange Laguna Beach. Comment
  CAS-BOT-BC231676  Nicotiana glauca Ira L. Wiggins 1965-11-6 20348 Orange Near Well No. 14, Kraemer Oil Estates near end of county road leading to Rancho Sanata Ana Comment
  JEPS12505  Nicotiana glauca Lawrence M. Booth 1932-7-30 1338 Orange near Newport Beach; Santa Ana River Channel Comment
  OBI28517  Nicotiana glauca R. L. Allen 1978-8-28 s.n. Orange Mission Viejo, near Saddleback Ranch Apts; Los Alisos Blvd Comment
  RSA0054917  Nicotiana glauca Adell Wilson 1932-4-19 s.n. Orange Laguna Canyon. Comment
  RSA659636  Nicotiana glauca T. A. Daubert 1991-5-26 673 Orange Tucker Wildlife Sanctuary, Modjeska Canyon, fire road. Comment
  UCR191318  Nicotiana quadrivalvis A. C. Sanders, Fred M. Roberts 2008-4-8 34743 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  RSA232073  Nolina cismontana C. W. Tilforth 1972-8-20 623 Orange Along County Rd. S19, between Cooks corner and O Neil Park Comment
  RSA615783  Nolina cismontana James C. Dice 1985-5-23 593 Orange Upper Borrego Canyon, along Santiago Canyon Rd., 1.8 km south of Modjeska Canyon Rd., Near 33 42 08N, 117 38 24W 440 Comment
  RSA644977  Nolina cismontana R. E. Riefner 2000-4-15 20 -377 Orange Santa Ana Mtns. NCCP North Ranch Policy Plan Area. Along dirt road running N and parallel to Black Star Cy. Road. 396 Comment
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Jan 6 2018
  RSA716093  Nolina cismontana Fred M. Roberts, Carol A. Roberts 2006-4-28 6323 Orange Mision Viejo: near Vista del Lago Dr., 0.9km NE jct. Vista del Lago and Los Alios Blvd., 1.7km NNW Lake Mission Viejo dam. 211 Comment
  UCR114938  Nolina cismontana R. E. Riefner Jr. 2000-7-6 20- 616 Orange Peninsular Range, Santa Ana Mountains, NCCP North Ranch Policy Plan Area, NE property; upper (E fork) of Fremont Canyon along National Forest Boundary at powerlines 692 Comment
  SEINET9120476  Nolina parryi J. Dice, H. Wier 1984-1 587 Orange Mission Viejo. 1.2 km. NW of Lake Mission Viejo, along south edge of Vista del Lago, just west of Canaveras 274 Comment
  UCD169159  Nothoscordum gracile A. C Sanders 2008-7-3 35714 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Augustine Staging Area. 260 Comment
  RSA698244  Oenothera elata subsp. hirsutissima J. R. Bruff 1930-10 16 Orange Santa Ana River Bed. Comment
  UC1007118  Oenothera elata subsp. hirsutissima P. A. Munz 1936-6-30 14173 Orange 5 mi s Garden Grove Comment
  CDA6653  Oldenlandia corymbosa G. D. Barbe 1973-8-9 1695 Orange Bordier s Nursery, 7231 Irvine Blvd., Santa Ana (Tustin). 0 Comment
  POM219209  Oligomeris linifolia L. M. Booth 1931-5-24 1097 Orange Bluff top N Newport Bay 8 Comment
  RSA758013  Oligomeris linifolia D. E. Bramlet 2008-3-26 4127 B Orange Bee Canyon. Bowerman landfill site. 202m S of the Bee Cyn. Access Road, 151m west of landfill entrance. Comment
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Jan 5 2016
  CAS-BOT-BC229010  Oncosiphon piluliferum R. E. Riefner, Jr. 2011-5-20 11 -57 Orange Newport Beach, Coastal Peak Park, East Coastal Peak Rd. at Ridge Park Rd. 305 Comment
  RSA288746  Opuntia X occidentalis M. G. McLeod, Walkington, Pinkava, G. Smith 1970-11-7 439 Orange 2 mi SW of Cook's Corner, Santa Ana Mountains. Comment
  RSA6613  Opuntia X occidentalis B. D. Stark 1933-1-21 4519 Orange Dana Point. 15 Comment
  OBI37758  Opuntia X vaseyi D. J. Pinkava & M. G. McLeod, M. G. McLeod 1970-11-8 312 Orange 1/2 mi E of Warner Airport 914 Comment
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Nov 18 2013
  POM285345A  Opuntia littoralis Lyman Benson 1955-10-17 15600 Orange Moulton Ranch just west of the summit east of Laguna Beach. 152 Comment
  UCR223965  Opuntia littoralis Fred M. Roberts 2008-10-27 7127 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8 km west northwest of Marine Institute, Dana Point Harbor 65 Comment
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Nov 20 2018
  RSA542651  Opuntia littoralis var. vaseyi Fred M. Roberts, Carol A. Williams 1988-4-12 3924 Orange Lomas de Santiago: Loma Ridge, 3.3 km NW Bolero Lookout. 475 Comment
  RSA317752  Opuntia oricola David Walkington 1963-5-17 170 Orange Above intersection of Dana Cove Park rd. and Green Lantern Dr., continuous slope with Dana Cove Park Rd. Dana Point. 61 Comment
  RSA0070944  Orobanche fasciculata Fred M. Roberts, Carol A. Roberts 1988-6-9 4082 Orange Santa Ana Mountains: Modjeska Peak, 0.9 km SW summit. 1542 Comment
  RSA790704  Orthocarpus purpurascens Jeanne Paxton 1934-4-21 5 Orange Modjeska Canyon. PR8. Comment
  RSA0054847  Orthocarpus purpurascens Keith E. Hoffmaster 1927-4-2 531 Orange Santa Ana Mts. San Onofre. Comment
  RSA590943  Orthocarpus purpurascens Fred M. Roberts Jr. 1991-5-2 4784 Orange San Joaquin Hills: Laguna Canyon, Laguna Laurel, just west of Laguna Canyon Road. c.a. 2 km N jct. El Toro Road, 4.5 km E Signal Peak; 110 Comment
  CAS-BOT-BC355769  Osmadenia tenella A. C. Sanders; Fred M. Roberts; Amber O'Neal 2008-5-9 35323 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 0.3 mi. west of Eastern Transportation Corridor (Hwy 241) and 1.45 mi. east of south end of Walnut Canyon Reservoir 335 Comment
  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
  IRVC15628  Osmorhiza brachypoda J. W. Johnson 1977-5-28 Orange Santiago Canyon, Fleming Property at E end of Modjeska; shaded bank of canyon side below chaparral. Santa Ana Mountains Comment
  RSA221029  Osmorhiza brachypoda E. W. Lathrop 1966-3-23 6108 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA0022432  Osmorhiza brachypoda R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49790 Orange Santa Ana Mountains: Trabuco Canyon Comment
  UCR138442  Oxalis californica R. E. Riefner Jr. 2000-4-27 20- 389 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running south from Baker Canyon Road to Silverado Road 335 Comment
  SEINET946136  Oxalis californica Robert Barr 1967-1 67190 Orange Along Santiago Canyon Road near Silveraldo Road; Santa Ana Montains. 259 Comment
  RSA651768  Oxalis corniculata Jack D. Ingwersen 1962-6-2 s.n. Orange Anaheim Comment
  UCR93936  Oxalis pes-caprae B. G. Pitzer, Paul Gomez 1996-4-30 2790 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  CLARK-A1528-3766  Oxytheca trilobata John C. Roos 1960-6-11 Orange Santa Ana Mountains 975 Comment
  UC718383  Oxytheca trilobata P. C. Everett 1935-6-19 Orange 1.5 mi below summit, e slope Santiago Peak (main divide motorway); Santa Ana Mts. 1310 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-BC121211  Paeonia californica J. T. Howell 1927-6-6 2425 Orange Santa Ana River bottom, Santa Ana Canyon 152 Comment
  CAS-BOT-BC121214  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
  POM211376  Paeonia californica Carl B. Wolf 1931-3-6 1842 Orange Trabuco canyon, 1/2 mile above Trabuco Oaks, west slope of Santa Ana Mountains. 457 Comment
  RSA650648  Paeonia californica D. E. Bramlet 2000-4-7 2945 Orange This site is 30m south of the SCE maintenace road and 1km east of Weir Canyon. The locality is 1.5km west of Blind Canyon. 287 Comment
  UC1618071  Paeonia californica Donald G. Nelson 1935-7-9 206 Orange San Juan Canyon Comment
  RSA797015  Pallenis maritima R. E. Riefner Jr. 2010-1-2 10 -3 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 2 Comment
  UC2014867  Pallenis maritima R. E. Riefner Jr. 2012-5-25 12 -393 Orange City of Dana Point, rocky shore between Mussel Cove and Salt Creek Beach Comment
  UCR241098  Pallenis maritima R. E. Riefner Jr. 2012-5-25 12- 393 Orange South Coast, City of Dana Point, rocky shore between Mussel Cove and Salt Creek Beach 5 Comment
  RSA724124  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2005-9-20 5 -674 Orange City of Huntington Beach, Huntington Central Park at Goldenwest St. 1 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
  UC537118  Parapholis incurva Lawrence M. Booth 1932-5-12 1009 Orange Newport Bay Comment
  UCD88470  Parapholis incurva Alan A. Beetle 1958-9-7 13074 Orange Newport. Comment
  UCD88687  Parapholis incurva Louis C. Wheeler 1947-5-3 6475 Orange Newport Bay. Comment
  UCR179758  Parapholis incurva R. E. Riefner Jr. 2005-7-9 05- 547 Orange South Coast, Huntington Beach, vicinity of Cynthia Dr. and Lavonne Lane along the Santa Ana River 7 Comment
  POM202594  Parapholis incurva L. M. Booth 1932-5-12 1009 Orange Newport Bay. Comment
  IRVC19396  Parkinsonia aculeata R. L. Allen 1983-2-12 A624 Orange Fullerton; Hillcrest Park, slope bordering E Valley View Drive. Southern Coastal Comment
  IRVC29831  Paspalum dilatatum Tom McCrainie, Mark A. Elvin 2006-9-23 5 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
  RSA0028024  Paspalum dilatatum Fred M. Roberts 2012-9-6 7697 Orange San Joaquin Hills: Buck Gully, Buck Gully Trail, west end near Poppy Street entrance, 2.1 kilometers WNW Pelican Hill summit. 37 Comment
  POM301692  Paspalum dilatatum J. C. Roos 1942-6-20 990 Orange Anaheim, Telegraph Road, east of Los Angeles Comment
  RSA710413  Paspalum distichum Fred M. Roberts 2005-10-3 6301 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
  RSA724060  Paspalum urvillei R. E. Riefner 2005-11-4 5 -742 Orange City of Lake Forest, Alton Pkwy. at Bertea Rd. 123 Comment
  OBI74742  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
  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
  RSA733055  Paspalum vaginatum R. E. Riefner 2007-10-26 07 -459 Orange City of Laguna Niguel, vicinity of La Paz Rd. at Kings Rd. 64 Comment
  SBBG133631  Paspalum vaginatum R. E. Riefner Jr. 2008-7-29 08 -256 Orange Salt Crk Beach, near Ritz Carlton Hotel; Dana Point 0 Comment
  SD218260  Paspalum vaginatum R. E. Riefner Jr., K. Campbell 2008-8-31 08 267 Orange City of Irvine, tidal portion of San Diego Creek, immediately easst of Highway 73 overpass. 0 Comment
  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
  UCR266421  Paspalum vaginatum D. E. Bramlet 2009-11-27 4429 Orange South Coast, San Diego Creek between Irvine and Newport Back Bay 8 Comment
  RSA737240  Paspalum virgatum R. E. Riefner, K. Campbell 2008-8-31 08 -267 Orange Orange County: city of Irvine, San Diego Creek, E side of Hwy 73 overpass, alt 2ft. 1 Comment
  RSA0045505  Pectocarya linearis Keith E. Hoffmaster 1935-3-17 841 Orange Near El Toro[Lake Forest] (Trabuco rd.). Comment
  UCR217452  Pectocarya linearis subsp. ferocula Mark A. Elvin 2003-1-26 2230 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  UCR281514  Pectocarya penicillata Mitch Provance, Jeremiah George 2017-3-20 317- 109 Orange West Coyote Hills, Fullerton, vicinity of Utility Access Road W of Gilbert Street and N of Rosecrans Ave., on land previously occupied by oil fields. 131 Comment
  RSA698932  Pedicularis densiflora Unspecified 1935-02 s.n. Orange Ortega highway near San Juan Springs. Comment
  JEPS117764  Pelargonium Mark A. Elvin 2005-5-14 4314 Orange Southern Coastal: UCI Arboretum. Comment
  SD174884  Pelargonium Mark A. Elvin 2005-5-14 4313 Orange Southern Coastal: UCI Arboretum, growing wild in the Arboretum grounds, not cultivated. 14 Comment
  UCR130357  Pelargonium A. C. Sanders, Mark A. Elvin 2003-10-12 27314 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  RSA739321  Pellaea andromedifolia Keith E. Hoffmaster 1935-5-5 33 Orange San Juan Canyon., Santa Ana Mts. Comment
  UC185251  Pellaea andromedifolia Mrs. Carlotta C. Hall 1913-5-27 9407 Orange Santiago Canyon Comment
  RSA698464  Pellaea mucronata Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts Comment
  IRVC3150  Pellaea mucronata var. mucronata E. P. Cowper Orange Trabuco Canyon. Santa Ana Mountains Comment
  POM17853  Pellaea mucronata var. mucronata P. A. Munz 1923-6-14 7065 Orange Glen Ivy Trail to Santiago Peak, Santa Ana Mountains 1127 Comment
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Apr 1 2013
  RSA7472  Pellaea mucronata var. mucronata C. B. Wolf 1933-8-24 5396 Orange Summit of Santiago Peak, Santa Ana Mountains 1731 Comment
  UCR215288  Pennisetum setaceum Fred M. Roberts, D. E. Bramlet 2008-5-13 6957 Orange Santa Ana Mountains, upper Weir Canyon, central fork, 3.5 km NE of Robbers Peak 369 Comment
  IRVC29788  Pennisetum setaceum Mark A. Elvin, Dean Kelch 2006-12-9 5311 Orange Irvine; San Diego Creek, edge of San Joaquin Marsh, beside University Dr., between Campus Dr. and Hwy 73. Southern Coastal 3 Comment
  UCR227630  Penstemon grinnellii Robt. L. Allen 2003-6-22 12274 Orange Santa Ana Mountains, west-facing flank of Santiago Peak, along North Main Divide Road 1555 Comment
  POM18089  Penstemon heterophyllus var. australis Philip A. Munz 1923-9-7 7748 Orange Santiago Peak in Santa Ana Mountains. 1707 Comment
  RSA7395  Penstemon heterophyllus var. australis Carl B. Wolf 1933-8-24 1914 Orange From Modfeska peak to Santiago peak. Common upper sonoran. 1524 Comment
  RSA16714  Penstemon spectabilis B. D. Stark 1935-7-26 7533 Orange 2 mi. south of summit of Skyline Drive, on road along ridge to Santiago Peak. 1067 Comment
  RSA401835  Penstemon spectabilis Christopher Davidson 1977-5-18 5604 Orange Santa Ana Mts. Cleveland Nat. Forest. Pleasants Peak (on Orange-Riverside Co. line). 1220 Comment
  NY661153  Penstemon spectabilis var. spectabilis F. R. Fosberg 1931-6-21 S 5085 Orange Lower Santiago Canyon Comment
  HSC3893  Peritoma arborea J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  UCSB47969  Peritoma arborea Roberts, Jr., Fred 1980-2-17 Orange Dana bluffs along Scenic Drive Road, northwest of and above Dana Point Harbor, Dana Point 58 Comment
  SD145971  Peritoma arborea var. globosa R. D. Goeden, D. W. Ricker 1965-6-21 Orange Dana Point 60 Comment
  UCR186686  Persicaria lapathifolia T. B. Salvato, Katie Kurtz, Mitch Provance 2006-10-15 1907 Orange South Coast, Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Drive 6 Comment
  RSA4186  Petunia parviflora L. R. Abrams 1901-6-13 1775 Orange Laguna Comment
  UCR220294  Petunia parviflora Robert Hamilton 1998-6-3 s.n. Orange South Coast, Fountain Valley, Mile Square Park, NE corner 'hobby area 14 Comment
  RSA17192  Phacelia brachyloba Percy C. Everett 1935-7-11 7267 Orange Santa Ana Mts, Main Divide Motorway, 1.7miles N of Jct with Trabuco Can road. 1220 Comment
  UCR193073  Phacelia brachyloba A. C. Sanders, Mitch Provance 2008-5-20 35423 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  RSA221010  Phacelia cicutaria var. hispida E. W. Lathrop 1966-4-18 6174 Orange 4 mi NE of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA594  Phacelia cicutaria var. hispida J. T. Howell 1927-7-26 477 Orange Claymine Canon near Sierra Peak. 244 Comment
  UC1280311  Phacelia cicutaria var. hispida John M. Tucker 1941-5-30 257 Orange roadside on Ortega Hwy 2-3 mi e western boundary of National Forest; Cleveland National Forest Comment
  RSA426058  Phacelia davidsonii M. B. Dunkle 1935-2-10 4334 Orange Laguna Creek; Coastal Southern California. 61 Comment
  RSA3175  Phacelia distans Carl B. Wolf 1932-3-8 2688 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  SEINET7073422  Phacelia distans A. G. Vestal 1963-4-24 s.n. Orange La Paz Canyon, Rancho Mission Viejo. Coordinate datum: NAD27. Comment
  UCR190963  Phacelia distans A. C. Sanders, Fred M. Roberts 2008-4-22 35040 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, valley at south end of Loma Ridge and at head of Limestone Canyon, c. 2.5 miles SW of Silverado, above spring shown on topo map 457 Comment
  UCR192740  Phacelia grandiflora A. C. Sanders, Fred M. Roberts 2008-5-6 35220 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin 216 Comment
  RSA738985  Phacelia hispida Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts. PR8. Comment
  RSA2096  Phacelia imbricata subsp. bernardina E. R. Johnson 1931-6-1 2233 Orange Roundtop, Rancho Santa Ana. 457 Comment
  RSA708726  Phacelia imbricata subsp. patula Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6222 Orange west slope of Modjeska Peak, Harding Canyon watershed, Main Divide Road, 0.46km W summit. 1670 Comment
  JEPS1116  Phacelia parryi Alice King March 1908 Orange Santiago Creek Santa Ana Mountains Comment
  RSA788910  Phacelia parryi Fred M. Roberts 2008-6-26 7062 Orange Lomas de Santiago: Loma Ridge along West Loma Ridge Road, c.a. 1 km N Haul Rd., 2.5 km NNW Bee Peak, Irvine Ranch Land Conservancy. 382 Comment
  UCR239629  Phacelia parryi Fred M. Roberts 2012-4-24 7515 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  RSA739553  Phacelia ramosissima A. C. Sanders, Fred M. Roberts 2008-7-3 35665 Orange Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 365 Comment
  RSA632  Phacelia ramosissima var. austrolitoralis J. T. Howell 1927-6-3 21 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA131083  Phacelia ramosissima var. latifolia E. K. Balls 1959-6-4 23756 Orange Grown in RSABG, Claremont. 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
  RSA562734  Phalaris aquatica Steve Boyd, Timothy S. Ross 1992-5-19 7450 Orange Southern Santa Ana Mountains San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail crossing. 320 Comment
  UCR160531  Phalaris canariensis Robert DeRuff 1992-5-29 427 Orange South Coast, Newport Back Bay, just below the bluff top in the Castaways area 15 Comment
  CAS-BOT-BC250615  Phalaris minor Carl B. Wolf 1932-7-7 3854 Orange Bryant Ranch, Bixby Ave., 3/10 mi. E. of Los Alamitos Blvd., about 250 ft. E. of S.W. corner of N.W. 40 of N.E. of Sect. 31 T4S R11W 48 Comment
  IRVC16190  Phalaris minor Gordon A. Marsh, Karlin G. Marsh 1978-5-20 s.n. Orange Santa Ana Mtns: Coal Canyon, NE portion of ridge. Peninsular Ranges 311 Comment
  IRVC8437  Phalaris minor J. B. Anderson 1966-4-18 597 Orange Irvine; MacArthur Blvd. near Red Hill Road. Southern Coastal Comment
  JEPS45890  Phalaris minor Lawrence M. Booth 1932-5-19 1076 Orange Newport Bay Comment
  POM263105  Phalaris minor J. C. Roos 1937-5-10 431 Orange Tustin 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
  RSA75799  Pholistoma auritum F. W. Peirson 1923-3-25 4481 Orange Aliso Creek, near Laguna Beach. Comment
  UCR234153  Phoradendron macrophyllum Dick Newell 2011-12-27 222 Orange Peninsular Range; Santa Ana Mtns. Region, Lomas de Santiago, along Limestone Canyon Rd. at junction to Dripping Springs Trail 311 Comment
  RSA701967  Phoradendron macrophyllum subsp. macrophyllum Fred M. Roberts 2003-6-20 5929 Orange Rancho Mission Viejo: Donna O'Neil Land Conservancy, Cristianitos Cyn., along Shady Canyon Trail, 84 meters N Sycamore Gate and 50 meters W Cristianitos Rd. 101 Comment
  RSA759147  Phyla nodiflora Robert Allen 2007-4-28 s.n. Orange foothills, along Santiago Creek, N side of Irvine Regional Park 174 Comment
  RSA0061169  Phyla nodiflora Robt. Allen, Trish Smith, Mike Kahle 2006-10-27 s.n. Orange Santa Ana Mountains region: Foothills along Santiago Creek, north side of Irvine Regional Park. 174 Comment
  UCR19247  Phyllospadix torreyi John C. Roos 1960-8-27 s.n. Orange Dana Point Comment
  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
  RSA597723  Physalis crassifolia D. Bramlet 1994-6-2 2380 Orange San Joaquin Hills. On ridgeline northwest of Laguna Canyon. The site is located 396m west of Laguna Canyon. Rd. and 305m north of Little Sycamore Canyon. Comment
  UCR98774  Physalis crassifolia D. E. Bramlet 1994-6-2 2380 Orange San Joaquin Hills. On ridgeline NW of Laguna Canyon; located 396 m west of Laguna Canyon Road and 305 m north of Little Sycamore Canyon Comment
  POM17438  Picris echioides P. A. Munz 1923-4-1 6595 Orange Laguna Lakes. 61 Comment
  POM6223  Picris echioides D. L. Crawford 1915-09 505 Orange Huntington Beach. Comment
  RSA472042  Picris echioides James Henrickson 1970-7-25 5037 Orange 2.5 miles NE of Huntington beach, 1 mile SE of Warner Ave. on sandy slope of E. Pacific Coast Hwy. at border of Bolsa Chica Salt Marsh. 0 Comment
  RSA752810  Picris echioides A. C. Sanders, Fred M. Roberts 2008-8-7 35993 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  UCR191217  Picris echioides A. C. Sanders 2008-4-29 35143 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  RSA799946  Pilularia americana Justin M. Wood 2011-4-12 3658 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  UC1543146  Pilularia americana Donald G. Nelson 1935-4-15 301 Orange near Costa Mesa (on rd from Garden Grove to Costa Mesa, <rd.> converging toward main hwy. from Santa Ana) Comment
  NY34650  Pinus attenuata C. B. Wolf 1934-12-21 6259 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
  RSA0027777  Pinus attenuata Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49694 Orange Northern Santa Ana Mountains: Sierra Peak Comment
  RSA562814  Pinus canariensis Steve Boyd, Tim Ross 1992-5-20 7467 B Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon along canyon floor from crossing Lucas Canyon Trail., Upstream 1/4 mile to spur trail leading to old mining habitations in side canyon. 305 Comment
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Feb 4 2016
  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
  RSA731002  Pinus coulteri Fred M. Roberts, B. Allen, D. Olsen 2007-1-19 6504 Orange Beek s Place along Main Divide Rd., 4.1 km NW Pleasant Peak. 852 Comment
  RSA796521  Pinus coulteri Robert F. Thorne, E. W. Lathrop 1977-5-18 49731 Orange Santa Ana Mountains: at head of Trabuco Canyon Trail Comment
  SEINET4690264 Image available Pinus radiata T. C. Arambula 1966-1 137 Orange Fullerton, Sunny Crest Drive at Harbor Blvd, Fullerton Comment
  RSA731000  Pinus sabiniana Fred M. Roberts, B. Allen, D. Olsen 2007-1-19 6501 Orange Beek s Place along Main Divide Rd., 4.1 km NW Pleasant Peak. 852 Comment
  RSA731007  Pinus sabiniana Fred M. Roberts, B. Allen, D. Olsen 2007-1-19 6499 Orange near Black Star Cyn. Rd. Upper Fremont Cyn. near mountain divide, 0.9 km ENE Horseshoe Spring and 0.1 km WSW Beek s Place. (4.1 km NW Pleasants Pk). West-facing slope on sandy, rocky soils in chaparral. 840 Comment
  RSA749997  Pinus sabiniana A. C. Sanders 2008-7-3 35716 Orange Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Agustine Staging Area 260 Comment
  POM6289  Piperia cooperi Philip A. Munz, L. T. Street, G. Williams 1919-5-3 2638 Orange Santa Ana River Canyon. Comment
  RSA131978  Piperia cooperi Gale Sphon 1959-5-2 324 Orange Between Upper and Lower San Juan Camps, Cleveland National Forest. Comment
  UCR131522  Piperia elongata Robt. L. Allen, Christopher M. Barnhill 2004-1-10 12266 Orange Santa Ana Mtns., Trabuco Trail, c. 0.7 trail miles (1127 m) NW of Los Pinos Saddle, middle of top half of first switchback 1179 Comment
  UCR98242  Piptatherum miliaceum Scott D. White 1997-3-28 4826 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  RSA731637  Pittosporum undulatum Fred M. Roberts 2007-10-29 6618 Orange Niguel Hill: Laguna Niguel, Seaview Park, 1.3 km ENE Aliso Peak. 265 Comment
  SBBG120621  Plagiobothrys acanthocarpus R. E. Riefner 2006-4-12 06 -116 Orange Irvine, N foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Cyn Rd 46 Comment
  IRVC21599  Plagiobothrys canescens Fred M. Roberts 1984-4-24 1354 Orange Wagon Wheel Canyon, 3.0km NE Median Survey Mark; 1.0km NW Bench Mark 422, Wagon Wheel Regional Park 150 Comment
  UCR281560  Plagiobothrys collinus Mitch Provance, Jeremiah George 2017-3-20 317- 115 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
  RSA450855  Plagiobothrys collinus var. gracilis Gordon Marsh 1978-3-17 s.n. Orange U.C. Irvine Ecological Preserve. 85 Comment
  RSA599634  Planodes virginica Fred M. Roberts, Nigel Hancock 1995-5-25 4949 Orange Costa Mesa: Fairview Park, just west of end of Canyon Drive, 0.1 km W Canyon School 24 Comment
  RSA401984A  Plantago erecta Albert J. Perkins 1921-04 s.n. Orange Mesa near Arch Beach, Santa Ana. Comment
  RSA542449  Plantago erecta Fred M. Roberts 1988-3-15 3868 Orange Rancho Mission Viejo: Central Gabino Canyon, 7km E Playa Survey Marker, 162 Comment
  RSA698374  Plantago erecta Jeanne Paxton 1934-3-11 s.n. Orange Sugar Loaf Canyon - Arch Beach. Comment
  UCR209377  Plantago erecta Fred M. Roberts, Linda Farley 2008-3-28 6834 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
  CAS-BOT-BC402187  Plantago erecta subsp. erecta R. F. Thorne; E. W. Lathrop; W. Wisura 1977-4-27 49653 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. Comment
  HSC16872  Plantago indica Unknown Jun 1961 Orange Vacant lot in Balboa Comment
  UC536902  Plantago lanceolata Lawrence M. Booth 1932-7-18 1266 Orange Costa Mesa Newport Bay Comment
  POM47661  Plantago ovata var. insularis F. W. Peirson 1924-5-31 4668 Orange 5 miles southeast of Laguna Beach. Comment
  RSA401708B  Platanus racemosa Albert J. Perkins 1915-04 s.n. Orange Santa Ana, Orange County Park. Comment
  RSA542453  Platanus racemosa Fred M. Roberts 1988-4-8 3898 Orange Lomas de Santiago: Loma Ridge, Central Linestone Canyon, 4.1 kilometers NNW Bolero Lookout. 323 Comment
  CAS-BOT-BC92245  Platystemon californicus Carl B. Wolf 1932-3-14 2713 Orange Rancho Santa Ana Botanic Garden, near the Chrysothamnus beds. 192 Comment
  RSA722432  Platystemon californicus Frances Battey s.n. Orange Laguna Hills. Comment
  RSA722433  Platystemon californicus L. C. Hull 1934-3-11 s.n. Orange Ortega Highway. Comment
  RSA759256  Platystemon californicus Robt. Allen, David Olsen 2008-3-8 s.n. Orange Lomas de Santiago, Limestone Canyon, along Limestone Canyon Road, circa 0.5 miles SE of junction with Hicks Canyon Road and Santiago Canyon Road. 274 Comment
  CAS-BOT-BC334497  Plecostachys serpyllifolia R. E. Riefner, Jr. 2008-7-9 08 -220 Orange City of Laguna Beach, bluff area W of West St. and Pacific Coast Highway 10 Comment
  CHSC106005  Plecostachys serpyllifolia R. E. Riefner Jr. 2009-7-18 09 -151 Orange City of Dana Point, beach near Salt Creek, vicinity of Ritz Carlton Resort. UTM: 11S 0432734E 3704750N. 2 Comment
  SBBG126059  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08 -312 Orange vicinity of W St and Pacific Coast Hwy; City of Laguna Beach 4 Comment
  UC2061644  Plecostachys serpyllifolia R. E. Riefner Jr. 2004-12-30 04 -681 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Highway. Comment
  UCR222656  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08- 312 Orange South Coast, city of Laguna Beach, ocean bluff vicinity of West St. and Pacific Coast Highway 6 Comment
  RSA766068  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. 3 Comment
  CDA20039  Pluchea odorata J. Dourte 2002-9-13 PDR 1254189 Orange Southwestern California; Santa Ana River in the vicinity of Anaheim. 0 Comment
  POM201842  Pluchea odorata L. M. Booth 1932-7-19 1272 Orange Bolsas Marsh. Comment
  RSA48860  Pluchea odorata J. C. Roos 1949-10-1 4684 Orange Doheney Beach. 3 Comment
  RSA710412  Pluchea odorata Fred M. Roberts 2005-10-3 6300 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
  RSA160418  Pluchea odorata J. D. Olmsted 1959-9-22 981 Orange Along Santa Ana River N of Sycamore Park along Hwy. 8-9mile WSW of Corona, betw Santa Ana Mts and Puente Hills to Pacific Ocean 137 Comment
  UCD134966  Pluchea odorata var. odorata J. C. Roos 1949-10-1 4684 Orange Doheney Beach. 3 Comment
  RSA683218  Pluchea purpurascens Scott D. White, Matt Carlton 2003-11-20 9871 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (San Juan Capistrano). 24 Comment
  UCR26067  Pluchea purpurascens John C. Roos 1949-10-1 4684 Orange South Coast, Doheny Beach 0 Comment
  RSA542452  Plumbago auriculata Fred M. Roberts 1987-10-14 3751 Orange Laguna Beach: Lower Blue Bird Canyon at end of Catalina Street. 21 Comment
  CAS-BOT-BC255535  Poa annua Ira L. Wiggins 1966-3-1 20485 Orange At corner of South Campus Drive and State College Blvd, Fullerton Comment
  IRVC1789  Poa annua I. L. Wiggins 1966-2-1 20405 Orange California State College, Fullerton; orange grove just E of Letters and Science Building. Southern Coastal Comment
  IRVC21286  Poa annua Fred M. Roberts 1984-3-24 1308 Orange Rancho Mission Viejo; Hwy 74, 9.2km by road E San Juan Capistrano, near mouth of Trampas Canyon, Southern Coastal 90 Comment
  RSA0027436  Poa annua Fred M. Roberts 2012-7-18 7677 Orange San Joaquin Hills: Newport Beach, Buck Gully, Buck Gully Trail, west end, just east of north terminus of Poppy Street and 2.1 km WNW summit of Pelican Hill. 37 Comment
  RSA91683  Poa howellii F. W. Peirson 1923-5-6 3491 Orange Trail to Santiago Peak from Holy Jim Canyon. 991 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
  CAS-BOT-BC94725  Poa secunda subsp. secunda R. C. Wenk; P. Hopkinson; M. Hammond; P. Brownsey 2008-3-24 719 Orange Chino Hills State Park. South Ridge Road W of San Juan Hill, going W from Equestrian Staging Area. Top of ridge 1450 Comment
  IRVC21793  Polycarpon tetraphyllum B. S. Woolfolk 1985-5-12 1 Orange 325 Vista Baya Circle, Costa Mesa 23 Comment
  UCSB48054  Polycarpon tetraphyllum Fritzke, S.; Roberts, Fred 1982-4-3 Orange Dana Point Headlands: north of Dana Strand Road; 0.5 km. W Dana Point Harbor; 0.8 km. SSW Richard Henry Dana School 80 Comment
  UCSB50635  Polygala californica Roberts, Fred 1982-7-9 Orange SANTA ANA MTNS.: Upper Hot Springs Canyon, 0.1km SW Falcon Group Camp: 2.0km SE Los Pinos Peak 327 Comment
  RSA562806  Polygala cornuta var. fishiae Steve Boyd, Tim S. Ross 1992-5-20 7478 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon, along foot trail upstream from end of old roadgrade to upper homestead (corrugated steel building). 350 Comment
  RSA759150  Polygala cornuta var. fishiae Robt. Allen, Lori Whalen 2008-7-5 s.n. Orange Along Harding Canyon Truck Trail, on the ridgeline south of upper Harding Canyon. 1.55 air miles SW of Maple Springs Saddle - Harding Canyon USFS gate, 0.71 air miles due W of BM 5015 on Main Divide Road, W arm of Modjeska Peak., Survey point no. 38 1298 Comment
  UCR79245  Polygala cornuta var. fishiae Steve Boyd, T. S. Ross 1992-5-20 7478 Orange Southern Santa Ana Mtns, San Mateo Canyon Wilderness Area: Western edge of the wilderness in Lucas Canyon along canyon floor from crossing of Lucas Canyon Trail, upstream 0.25 mi to spur trail leading to old mining habitations in side canyon. 412 Comment
  SBBG128684  Polygala cornuta var. fishiae R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49615 Orange Ortega Hwy (74) ca. 2.5 mi above San Juan Fire Station, lateral ravine tributary to San Juan Cyn; Santa Ana Mtns Comment
  UCR158163  Polygonum aviculare Adrian Wolf 1998-5-15 271 Orange South Coast, Lambert Reservoir, north of El Toro Marine Corps Air Station 134 Comment
  UCSB48371  Polygonum aviculare Roberts, Fred 1982-5-22 Orange DANA POINT: jct. of Stone Hill and Selva Rds 1.0km ESE Dana Hills High School; 1.7km SW Marco Forster Junior High School 12 Comment
  POM201766  Polygonum aviculare subsp. aviculare L. M. Booth 1932-7-4 1254 Orange Newport Lagoon. Comment
  RSA5604  Polygonum aviculare subsp. aviculare Carl B. Wolf 1932-6-20 3755 Orange Common around the administration Blds, Rancho Santa Ana Botanic Garden. 198 Comment
  RSA6067  Polygonum hydropiperoides Carl B. Wolf 1932-6-13 3719 Orange Storm drain at Malvern and Nicholas Aves; Fullerton. 53 Comment
  RSA731907  Polygonum lapathifolium Fred M. Roberts, Sandy Leatherman 2007-11-27 6672 Orange Yorba Linda: Santa Ana Canyon, Santa Ana River wash, S of E La Palma Road near Via Lomas de Yorba Linda, about 0.6 km W Gypsum Cyn. bridge. 113 Comment
  UC729856  Polygonum lapathifolium Carl B. Wolf 1932-7-7 3835 Orange Bixby Ave. 100 ft w Hansen Road; Bryant Ranch 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
  RSA21  Polypodium californicum J. T. Howell 1928-2-7 810 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  UCR99868  Polypodium californicum Scott D. White 1996-12-20 4629 Orange Santa Ana Mountains, above Modjeska Canyon; proposed water tank site 488 Comment
  IRVC21306  Polypodium californicum Fred M. Roberts 1984-1-29 1160 Orange Laguna Niguel: Niguel Hill, 1.1km ENE of Aliso Peak, 2.0km SW of Alicia Fire Station. Southern Coastal 260 Comment
  RSA697072  Polypogon interruptus Rankin s.n. Orange Irvine Park Comment
  CSUSB466  Polypogon monspeliensis John S. Davis 1972-5-6 720506 3 Orange Newport Beach; 1.1 miles north from corner of San Jaquin Hills road and Back Bay road; beneath road bridge, along creek bed leading to marsh Comment
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Oct 7 2013
  IRVC1813  Polypogon monspeliensis C. Hooven 1965-4-10 s.n. Orange Spruce and Palisades (sic). southern coastal Comment
  IRVC25048  Polypogon monspeliensis Fred M. Roberts 1986-8-21 3062 Orange Mission Viejo: English Canyon along English Creek just below Trabuco Road crossing, about 2.4km E El Toro Fire Station. southern coastal 166 Comment
  IRVC29711  Polypogon monspeliensis Mark A. Elvin, Barry S. Nerhus 2006-11-4 5247 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA696314  Polypogon monspeliensis Anonymous s.n. Orange Santa Ana. Comment
  RSA735159  Polypogon monspeliensis A. C. Sanders, Fred M. Roberts 2008-5-6 35239 Orange Lomas de Santiago, Loma Ridge, head of Hicks Canyon, south of Santiago Reservoir 351 Comment
  UCR100453  Polypogon monspeliensis B. G. Pitzer 1996-4-30 2773 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  SEINET10959318  Polypogon viridis LeRoy R. Abrams Abrams s.n. Orange Santa Ana River, Santa A. Comment
  RSA644958  Populus balsamifera subsp. trichocarpa R. E. Riefner, Adrian Wolf 2000-1-24 20 -116 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N of Saniago Creek and immediately N. of major stream fork. 305 Comment
  RSA714396  Populus balsamifera subsp. trichocarpa R. E. Riefner 2006-4-8 6 -111 Orange South Coast: San Juan Capistrano (city), San Juan Creek at La Novia Ave. 22 Comment
  UCR175447  Populus balsamifera subsp. trichocarpa Mark A. Elvin, A. C. Sanders 2005-9-2 4493 Orange Peninsular Ranges, Santa Ana Mtns: Mouth of Lion Canyon, just upstream from Lower San Juan Campground 457 Comment
  RSA542356  Populus fremontii Fred M. Roberts Jr. 1987-5-12 3436 Orange Santa Ana River: Horseshoe Bend, 3.9km S San Juan Hill; 1.0km ENE Wier Canyon Road bridge. 104 Comment
  CLARK-A1528-4065  Populus trichocarpa Alfred R. Roos 1936-2-9 1535 Orange Santa Ana Canyon 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
  CLARK-A1528-2062  Porophyllum gracile John C. Roos 1937-5-10 2337 Orange San Juan Capistrano Comment
  POM180684  Porophyllum gracile J. T. Howell 1929-3-2 4097 Orange Rocky hills on N side of Santa Ana Canyon. 152 Comment
  SD144030  Porophyllum gracile Scott D. White 1997-3-28 4841 Orange Santa Ana Mountains, above Modjeska Canyon. 424 Comment
  SD152924  Porophyllum gracile Steve Boyd, Tim Ross 1992-5-19 7447 Orange Southern Santa Ana Mountains, western edge of the wilderness in Aliso Canyon at the confluence with Lucas Canyon. 274 Comment
  RSA184102  Portulaca oleracea I. L. Wiggins 1965-11-7 20360 Orange Vacant lot between State College Blvd. and Troy High School Campus, Fullerton. Comment
  UC537265  Potentilla anserina subsp. pacifica Lawrence M. Booth 1932-6-28 1215 Orange Bolsas Marsh Comment
  RSA85790  Potentilla anserina var. grandis F. W. Peirson 1924-10-19 5235 Orange Wintersberg Comment
  RSA780828  Potentilla glandulosa subsp. glandulosa Sandy Leatherman 2011-5-16 2011 -15 Orange Peninsular Ranges; Chino-Puente Hills region: 50 meters west of Carbon Canyon Road and Lions Canyon Road in Carbon Canyon in the City of Brea. 273 Comment
  UCR50083  Pseudognaphalium biolettii B. G. Pitzer, D. C. Hawks 1986-10-21 347 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, c. 10 mi east of Santa Ana, in hills N and east of South Coast Gun Club on Jeffrey Road in Hicks Canyon 183 Comment
  RSA747708  Pseudognaphalium californicum Fred M. Roberts 2008-5-16 6986 Orange Dana Point: Dana Point Hradland, CNLM Preserve, north of Marguerita Drive, 0.5 km WNW Marine Institute, Dana Point Harbor. 75 Comment
  SD212490  Pseudognaphalium californicum A. C. Sanders, Fred M. Roberts and Michelle Balk 2006-7-20 33008 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
  CHSC106735  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-2-13 07 -55 Orange City of San Juan Capistrano, vicinity of La Novia Ave. and San Juan Creek. UTM: (NAD 83) 11S0439837E 3707224N. 31 Comment
  JEPS20432  Pseudognaphalium ramosissimum L. M. Booth 1932-7-27 1321 Orange Corona del Mar Comment
  RSA263691  Psilocarphus tenellus E. W. Lathrop 1966-4-10 6155 Orange Silverado Canyon, Santa Ana Mountains, Cleveland National. Forest, Trabuco District. 366 Comment
  UCR27153  Psilocarphus tenellus E. W. Lathrop 1966-4-10 6155 Orange Peninsular Range; Santa Ana Mtns, Silverado Canyon 732 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
  UCR174209  Psoralea macrostachya A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33029 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  RSA771718  Pteridium aquilinum Robert Allen, Richard S. Newell, Roger E. Reinke 2006-6-30 s.n. Orange Santa Ana Mts., Holy Jim Canyon Trail. About 1 mile up trail from forest gate. 609 Comment
  JEPS57988  Pterostegia drymarioides Alice King 1908-4-18 Orange Santa Ana Mts. Comment
  RSA591804  Pulicaria hispanica P. H. Raven 1961-10-15 16857 Orange Dyke along road to Yorba Linda just north of US Hwy 91 114 Comment
  IRVC25158  Pulicaria paludosa Fred M. Roberts 1986-9-3 3127 Orange adjacent to Anaheim, between Yorba Linda Regional Park and Imperial Hwy, Santa Ana River 88 Comment
  UC2029950  Pulicaria paludosa Steve Boyd, R. E. Riefner 2000-9-13 10307 Orange SANTA ANA MOUNTAINS: Fremont Canyon, about 1.5 air miles west of Oat [a.k.a. Oak] Flat and 1.5 air miles southeast of Claymont clay mine. Comment
  UCR149385  Pulicaria paludosa Scott D. White, Matt Carlton 2003-11-20 9863 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 24 Comment
  UCR95480  Pulicaria paludosa P. H. Raven 1961-10-15 16847 Orange Anaheim: Santa Ana River Bed at Anaheim Street crossing 61 Comment
  UCSB52444  Pulicaria paludosa Roberts, Fred; Ferren, Wayne 1982-7-21 Orange Newport Beach; Upper Newport Backbay, near jct. of Back Bay Dr. and San Joaquin Hills Rd., 2.6 km. E Newport Harbor High School Comment
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Dec 12 2018
  IRVC26753  Pulicaria paludosa Mark A. Elvin 2003-8-24 3013 Orange San Joaquin Hills, Irvine, UCI, 100m N of the intersection of Shady Canyon Drive and Bonita Canyon Road. Southern coastal 72 Comment
  RSA221064  Pyrus communis E. W. Lathrop 1966-4-18 6176 Orange Santa Ana Mountains, 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA12364  Quercus X grandidentata E. R. Johnson 1934-1-6 5564 Orange Santa Ana Mts., on slopes of Sierra Peak at about the head of Claymine Canyon. 762 Comment
  RSA0042557  Quercus agrifolia Paul Shirokawa 1998-4-24 9 Orange Cleveland National Forest; Trabuco Ranger District, 4.45 miles from Ortega Highway (State Highway 74) on North Main Divide Road. 1066 Comment
  RSA657748  Quercus agrifolia var. agrifolia Ken Greby 1985-5-20 44 Orange behind PG and E substation located 2 km. SE from Laguna Canyon Td., on El Toro Rd., adjacent to Leisure World. Comment
  RSA590959  Quercus berberidifolia Fred M. Roberts, Karlin G. Marsh 1991-4-10 4765 Orange Laguna Beach: South Laguna, Temple Hill, ridge between upper Hobo Canyon and Aliso Gorge, 1.7 km NW Niguel Hill summit. 213 Comment
  UCD166560  Quercus berberidifolia Dylan O. Burge 2016-2-23 2089 Orange Santa Ana Mountains, vicinity of Blue Jay Campgroundm along spur off of Long Canyon Road. 1060 Comment
  RSA477084  Quercus berberidifolia George C. Johnston 1902-9-1 s.n. Orange Campus Johnston Ranch. Comment
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Oct 19 2015
  RSA659896  Quercus cornelius-mulleri Karl Price 1988-4-29 15 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  UCD170637  Quercus dumosa D. O. Burge 2017-11-17 2326 Orange Laguna Niguel. 140 Comment
  UCSB52405  Quercus dumosa Roberts, Fred 1982-6-30 Orange Laguna Niguel; Niguel Hill, Pacific Island Dr., 2.0 km. SE Aliso Peak; 1.3 km. E Bench Mark 133 130 Comment
  IRVC21617  Quercus engelmannii Fred M. Roberts, Kelly P. Steele 1984-4-20 1344 Orange Rancho Mission Viejo: Hwy 74 near mouth of Trampas Canyon; 8.7km by road E San Juan Capistrano Southern Coastal 90 Comment
  UCR208055  Quercus engelmannii Fred M. Roberts, D. E. Bramlet 2003-4-10 5645 Orange Coastal Plains & Basins; South Coastal Plain region, Rancho Mission Viejo: Donna O'Neill Land Conservancy, ridge between Cristianitos Cyn. and Segunda Deshecha Canada, 1.51km W Gato Gate and 1.78km NW Edison substation 229 Comment
  IRVC16580  Quercus kelloggii Gordon A. Marsh, Karlin G. Marsh 1976-12-15 s.n. Orange Santa Ana Mtns: Silverado Truck Trail, 0.2 mi. N of Main Divide jctn. Peninsular Ranges Comment
  UCR113448  Quercus wislizeni var. frutescens R. E. Riefner Jr. 2000-4-13 20- 361 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, upper drainage of Fremont Canyon near National Forest boundary, south of Claymore Mine 610 Comment
  UCSB47644  Quercus wislizeni var. frutescens Roberts, Fred 1980-5-3 Orange Main Divide Truck Trail, 1.7km w. Trabuco Pk., Santa Ana Mtns. 1268 Comment
  RSA160430  Rafinesquia californica J. D. Olmsted 1959-4-23 471 Orange Spring Trail at Beacon Pines Ranch; 9 miles SW of Corona. 762 Comment
  RSA702991  Rafinesquia californica D. E. Bramlet, Fred M. Roberts 2003-3-13 3331 Orange Donna O'Neill Reserve. North East ridge of the reserve, 915m W of Cristianitos Rd. & 1.2km N of the E-W access road. 195 Comment
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Nov 7 2010
  RSA749300  Rafinesquia californica Fred M. Roberts 1999-4-21 5180 Orange Lomas de Santiago: Loma Ridge, ridges north of Dripping Springs Cyn., 1.5 km W Silverado Sch. and 4.8 km NNW Bolero Lookout. 365 Comment
  SD144019  Rafinesquia californica Scott D. White 1997-3-28 4838 Orange Above Modjeska Canyon: Proposed water tank site. 424 Comment
  RSA724035  Ranunculus arvensis R. E. Riefner 2000-4-2 0 -166 Orange Santiago Equestrian Center, Santiago Canyon Rd., N 0.5 m from Ridgeline Rd., Oso Creek drainage. 392 Comment
  RSA734146  Ranunculus californicus R. H. McArthur 1934-3-3 s.n. Orange Forks of laguna Canyon Comment
  IRVC1130  Raphanus raphanistrum L. McCabe 1965-4-17 Orange Laguna Canyon. Laguna Beach Comment
  RSA585061  Raphanus raphanistrum D. Atwood 1993-3-29 17737 Orange Huntington Beach along Beach Blvd, 1/2 miles N of the Beach, Comment
  RSA658474  Raphanus sativus J. Berkley 1994-4-19 5 Orange Yorba Linda, off Bastuchury Rd. about 50 yds from Casa Loma Ave. Comment
  UCR125475  Rhamnus alaternus Roger E. Reinke 2003-2-18 s.n. Orange South Coast, Newport Back Bay, Big Canyon 30 Comment
  CAS-BOT-BC56028  Rhamnus ilicifolia C. B. Wolf; E. R. Johnson 1933-11-3 5531 Orange Santa Ana Mts., Silverado Canyon, base of Silverado Motorway 731 Comment
  CAS-BOT-BC56031  Rhamnus ilicifolia P. C. Everett 1935-6-19 7242 Orange Santa Ana Mts., Trabuco Canyon, 2 mi. below (SW.) Forest Service Patrol Station 365 Comment
  SBBG27365  Rhamnus ilicifolia P. C. Everett 1935-6-19 Orange Trabuco Cyn, 2 mi below (SW) Forest Service Patrol Station 365 Comment
  UC1121846  Rhamnus ilicifolia R. St. John 1931-2-25 188 Orange Potreros Los Pinos Elsinore Quad. 762 Comment
  POM246507  Rhamnus tomentella subsp. cuspidata Carl B. Wolf 1933-8-24 5391 Orange Summit of Santiago Peak, Santa Ana Mountains. 1732 Comment
  CAS-BOT-BC167921  Rhus integrifolia Ira L. Wiggins 1966-2-25 20474 -A Orange Firestone Boy Scout Reservation, in hills E. of Brea Comment
  POM257050  Rhus integrifolia W. Pequegnat 1940-5-26 s.n. Orange Black Star Canyon, Santa Ana Mts. 609 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
  CAS-BOT-BC167931  Rhus ovata C. B. Wolf 1931-3-6 1857 Orange 1 1/2 miles below Trabuco Camp Ground, Trabuco Canyon, west slope Santa Ana Mts. 548 Comment
  CAS-BOT-BC167934  Rhus ovata John Thomas Howell 1927-7-26 2843 Orange Claymine [Canon] Canyon, n. Santa Ana Mts. 243 Comment
  HSC3149  Rhus ovata S. M. Clapp 1966-4-10 30 Orange 4 mi. into Black Star Canyon 183 Comment
  SD253897  Rhus ovata Jim Riley 2013-12-10 132 Orange San Clemente area; 0.29 miles E intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 74 Comment
  RSA3192  Rhus trilobata var. quinata B. D. Stark 1931-6-6 2232 Orange Rancho Ranta Ana. Comment
  CAS-BOT-BC93075  Ribes californicum var. hesperium Carl B. Wolf 1931-3-6 1849 Orange 1 mile below Trabuco Camp Ground, Trabuco Canyon, west slope of the Santa Ana Mountains. 609 Comment
  UC484233  Ribes californicum var. hesperium C. B. Wolf 1931-1-30 1825 Orange Claymine Canyon Santa Ana Canyon 457 Comment
  RSA0024853  Ribes cereum Jeanne Paxton 1934-2-25 s.n. Orange Sugar Loaf Canyon, Arch Beach. Comment
  CAS-BOT-BC173128  Ribes indecorum C. B. Wolf 1931-3-6 1861 Orange 1 mile north of base of Modjeska Grade, west slope of the Santa Ana Mts. 304 Comment
  POM12991  Ribes indecorum P. A. Munz, I. M. Johnston 1922-5-18 5310 Orange Santa Ana River Canyon. 457 Comment
  RSA101787  Ribes indecorum R. Weatherby 1950-2-25 101787 Orange Harding Canyon, Santa Ana Mountains. 579 Comment
  RSA1175  Ribes indecorum B. D. Stark 1930-2-21 1475 Orange Black Star Creek. 457 Comment
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Sep 5 2013
  RSA439665  Ribes indecorum E. Crow 1929-2-22 213 Orange Gypsum Canyon, Santa Ana Mountains. Near Corona. Comment
  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
  UCR223417  Ribes indecorum Dick Newell, Don Millar 2011-2-8 050 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, top of Agua Chinon Canyon at head of Limestone Canyon 387 Comment
  POM9115  Ribes indecorum P. A. Munz, R. D. Harwood 1920-4-24 3750 Orange Santa Ana Mountains, Sierra [Freemont] Canyon 366 Comment
  RSA84500  Ribes malvaceum var. viridifolium F. W. Peirson 1925-4-11 5733 Orange slope above mill, in Silverado Canyon, Santa Ana Mountains. 915 Comment
  CHSC116481  Ribes malvaceum var. viridifolium R. F. Thorne; C. W. Tilforth, E. W. Lathrop 1977-4-27 49706 Orange Northern Santa Ana Mountains: Sierra Peak. 899 Comment
  RSA602110  Ribes speciosum Scott D. White 1997-5-6 5038 Orange Santa Ana Mountians, Santiago Canyon Area: Unnamed tributary to Santiago Creek flowing from the SW, directly W of Pancho Canyon . Lomas de Santiago S179. 366 Comment
  RSA608233  Ribes speciosum Steve Boyd, Bart O'Brien 1998-1-13 10067 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. 884 Comment
  UCR5952  Ribes speciosum David M. Peterson 1966-3-9 660309- 08 Orange 3 mi east of San Juan Capistrano on the road to Elsinore 306 Comment
  IRVC9188  Ricinus communis R. Yarnell 1966-3-4 53 Orange hills near jct. of Newport Blvd. and Riverside Hwy [Fwy?], Anaheim? Comment
  OBI30079  Ricinus communis T. Pringle 1966-3-3 42 Orange On a hill ner the jctn of Newport Blvd, and Riverside hwy Comment
  OBI70101  Ricinus communis D. G. Kelch 2006-12-9 6 .56 Orange Irvine. University dr along tidal Crk just E of I-73. 9 Comment
  RSA797435  Ricinus communis Keith E. Hoffmaster 1935-2-17 s.n. Orange Near Costa Mesa Comment
  IRVC25524  Robinia pseudoacacia Fred M. Roberts 1987-11-17 3755 Orange Serrano Creek, near Trabuco Road west of Canada Road, 2.5km NNE El Toro Fire Station, Lake Forest 146 Comment
  JEPS51543  Romneya coulteri Alice King Jun 1908 Orange near Santa Ana (in hills) Comment
  RSA649681  Romneya coulteri R. E. Riefner 2000-7-6 20 -615 Orange NCCP North Ranch Policy Plan Area. NE property; along powerline SE of upper Fremont Cyn. 605 Comment
  SBBG104114  Romneya coulteri B. Pitzer, S. Hemstreet 1992-5-21 1938 Orange St Hwy 74, 1 mi uphill from the 2000 ft marker, and on left ca. 1 mi on old paved Rd 762 Comment
  SEINET7881036 Image available Romneya coulteri F. R. Fosberg 1931-1 S 5094 Orange Lower Santiago Comment
  UCR5669  Romneya trichocalyx Kenneth Hibberd 1966-5-8 660508- 01 Orange El Toro Rd. 3 mi. east of El Toro. 213 Comment
  UCR130493  Rorippa nasturtium-aquaticum R. E. Riefner Jr. 2002-5-4 02- 97 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR192115  Rosa californica A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35294 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, c. 1.1 mi. E of Walnut Cyn Reservoir 277 Comment
  POM2665  Rosa californica I. M. Johnston 1918-9-3 2140 Orange San Joaquin Hills. Laguna Canyon. upper end of the 90 degree curve in the road 76 Comment
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Jun 23 2015
  UCR26630  Rubus ursinus E. W. Lathrop 1966-5-1 6259 Orange Santa Ana Mtns., 5 mi east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest 400 Comment
  RSA699560  Rubus vitifolius Minor Warne 1934-03 s.n. Orange Santa Ana River Banks Comment
  SD227881  Rumex conglomeratus Scott D. White, Brian Leatherman 1997-6-12 5340 Orange East of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e. ca. 2 to 4 mi E of I-15 / Hwy 74 jtn. Stream. 46 Comment
  HSC17611  Rumex crispus C. L. Hitchcock, C. V. Muhlick 1964-3-17 23072 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  UCR99558  Rumex crispus B. G. Pitzer 1996-4-30 2804 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  POM201758  Rumex crispus L. M. Booth 1932-5-12 s.n. Orange Newport Bay. Comment
  UCR221460  Rumex hymenosepalus Dick Newell, Don Millar 2010-4-27 29 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, 100 ft. east of Agua Chinon Road at a point 6 miles due north of Hwy 241 229 Comment
  POM2359  Rumex maritimus D. L. Crawford 1916-7-26 s.n. Orange Aliso Canyon. Comment
  POM47585  Rumex maritimus I. M. Johnston 1924-8-29 s.n. Orange 3 miles north of Balboa. Comment
  RSA145440  Ruppia maritima Peter H. Raven 1961-10-15 16860 Orange Coast Hwy 2 miles SE of Sunset Beach 0 Comment
  UCR130499  Salicornia bigelovii R. E. Riefner Jr. 2003-8-17 03- 335 Orange South Coast, Costa Mesa, salt marsh along Santa Ana River, west of Talbert Regional Park 11 Comment
  UCSB36208  Salicornia pacifica Ferren, Wayne 1980-8-27 Orange W side of Backbay Drive ca. 1.5 km. NE of Rt. 1, Newport Backbay, Newport Beach Comment
  SFV1096  Salicornia pacifica A. M. Johnson 1932-9-16 4148 Orange Newport. Edge of salt marsh. Comment
  RSA478906  Salicornia virginica F. R. Fosberg 1931-8-19 7293 Orange Newport Bay. 0 Comment
  SEINET6653605 Image available Salicornia virginica Gary Maxwell 1970-1 BC- 3 Orange ca. 4 mi. So. of Seal Beach, NE of Pacific Coast Hwy, at Bolsa Chica 0 Comment
  UC7477  Salicornia virginica O. B. Byram 1901-9-10 2 Orange Westminster Comment
  OBI5926  Salix exigua Carl B. Wolf 1932-4-15 2954 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Cyn 120 Comment
  RSA539365  Salix exigua Fred M. Roberts Jr., Karlin G. Marsh 1989-3-14 4201 Orange San Juan Canyon, Lower San Juan Picnic Ground. 329 Comment
  UC492441  Salix exigua Carl B. Wolf 1932-7-7 3845 Orange near town of Los Alamitos (Rancho Santa Ana along ditch on Bixby Ave., 1 km. w of Hansen Rd., Bryant Ranch) Comment
  UC492442  Salix exigua var. hindsiana 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 Comment
  CAS-BOT-BC108135  Salix gooddingii Carl B. Wolf 1932-4-8 2950 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon 120 Comment
  CAS-BOT-BC6083  Salix gooddingii LeRoy Abrams 1903-4-16 3256 Orange Santa Ana River between Fullerton and Orange Comment
  IRVC29700  Salix gooddingii Mark A. Elvin, Barry S. Nerhus 2006-11-4 5241 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  POM182034  Salix gooddingii Carl B. Wolf 1932-4-15 2955 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon. 120 Comment
  SBBG58903  Salix gooddingii C. B. Wolf 1932-4-8 2950 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Cyn 120 Comment
  UC492356  Salix gooddingii Carl B. Wolf 1932-4-8 2950 Orange near Santa Ana R. Rancho Santa Ana (at s.e. corner of pear orchard); Santa Ana Canyon 120 Comment
  RSA0038335  Salix hindsiana var. leucodendroides Carl B. Wolf 1932-3-16 2714 Orange Rancho Santa Ana. 121 Comment
  CAS-BOT-BC106947  Salix laevigata Scott D. White; Brian Leatherman 1997-6-12 5323 Orange East of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi E of I-15/Hwy 74 jtn. 75 Comment
  POM201831  Salix laevigata L. M. Booth 1932-12-16 1380 Orange West of Wolf's Ranch, 1/2 mile from ocean, Santa Ana River. Comment
  RSA357007  Salix laevigata Robert F. Thorne 1975-4-6 45570 Orange San Joaquin Marsh: Near Irvine and coast. Comment
  RSA4249  Salix laevigata Carl B. Wolf 1932-4-8 2949 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon, at southeast corner of pear orchard. 120 Comment
  RSA5309  Salix lasiolepis B. D. Stark 1933-1-7 4508 Orange Rancho Santa Ana, river bottom below ranch houses. 122 Comment
  UCR102629  Salix lasiolepis B. G. Pitzer 1997-4-15 3152 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
  UCR193009  Salix lasiolepis A. C. Sanders 2008-5-28 35444 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  RSA0071935  Salix lasiolepis CNPS Accuracy Assessment Team 2014-4-28 898 .1 Orange Black Star Canyon. Comment
  RSA725966  Salix lucida subsp. lasiandra R. E. Riefner 2006-10-4 06 -475 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lake Forest, Aliso Creek near Portola Parkway at El Toro Rd. 225 Comment
  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-BC126310  Salix sessilifolia Helen D. Geis 1902-1-1 554 Orange Santa Ana River Comment
  CDA3167  Salsola australis R. E. Riefner Jr. 2007-3-18 07 -152 Orange City of Newport Beach. North shore of Newport Bay, Dover Beach, general vicinity of Morning Star Lane and Polaris Drive. Comment
  UCR197705  Salsola australis A. C. Sanders, Fred M. Roberts 2008-9-18 36080 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  UCR210319  Salsola australis A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37200 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  RSA12656  Salsola tragus E. R. Johnson 1934-7-26 6040 Orange Grain field west of the Rancho Santa Ana Botanic Garden. 198 Comment
  RSA270  Salsola tragus J. T. Howell 1927-7-27 499 Orange Near ranch houses, Rancho Santa Ana 152 Comment
  RSA734986  Salsola tragus A. C. Sanders, Fred M. Roberts, Amber O Neal 2008-5-9 35282 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  RSA34605  Salvia apiana N. C. Cooper 1944-6-4 1329 Orange San Juan Canyon. 152 Comment
  RSA542480  Salvia apiana Fred M. Roberts, G. A. Marsh, K. G. Marsh 1988-4-26 3941 Orange San Joaquin Hills: Pelican Hill, 0.5km SE summit. 165 Comment
  UC1124655  Salvia apiana A. Lewis 1934-5-1 434 Orange Los Pinos Peak; Cleveland National Forest, Elsinore Quad. 1036 Comment
  RSA0006683  Salvia apiana J. T. Howell 1927-6-1 5 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  RSA0013963  Salvia columbariae Fred M. Roberts, D. E. Bramlet 2008-5-13 6955 Orange Upper Weir Cyn., central fork, 3.5 km NE Roberst Peak 369 Comment
  RSA542482  Salvia columbariae Fred M. Roberts, Teresa Sholars 1988-3-29 3881 Orange Santa Ana Mountains: Hot Springs Canyon, 0.5 km by road north Hwy 74, 0.9 km ESE Juan Rancho Survey Marker. 223 Comment
  RSA722336  Salvia columbariae L. C. Hull 1934-5-6 s.n. Orange Trabuco Canyin. Comment
  SD42978  Salvia columbariae EB H mar 1948 Orange Ner San Juan Camp Comment
  POM21174  Salvia leucophylla Helen D. Geis 1902-05 s.n. Orange Santa Ana Mtns: Santiago Canyon. Comment
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Dec 1 2016
  UCR228791  Salvia leucophylla Dick Newell, Don Millar 2011-5-10 147 Orange Peninsular Range; Santa Ana Mtns., along MWD service road between Outdoor Education Center and Fremont Canyon, 0.2 mi. above Peters Cyn. Rd. 193 Comment
  RSA608239  Salvia mellifera Steve Boyd, Bart O'Brien 1998-1-13 10073 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. 884 Comment
  RSA751396  Salvinia minima Rick E. Riefner Jr. 2008-7-9 8 -219 Orange City of Laguna Beach, bluff area W of West St. and Pacific Coast Highway. 4 Comment
  UCR177691  Sambucus mexicana Fred M. Roberts 2003-5-1 5684 Orange Coastal Plains & Basins; South Coastal Plain region, Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.60 km SSW Gato Gate and 0.16 km west of Cristianitos Rd. 93 Comment
  CAS-BOT-BC238827  Sambucus nigra subsp. caerulea Carl B. Wolf 1934-9-21 6140 Orange Silverado Canyon, west slope of Santa Ana Mts., 3/4 mi. below foot of Silverado Motorway 548 Comment
  OBI5973  Sambucus nigra subsp. caerulea Carl B. Wolf 1931-7-25 2293 Orange Upper sonoran; Above the irrigation canal, just N of the Mexican houses, Rancho Satna Ana, Santa Ana cyn 122 Comment
  RSA640718  Sambucus nigra subsp. caerulea L. C. Wheeler 1931-8-16 s.n. Orange Santa Ana River 152 Comment
  RSA542457  Samolus parviflorus Fred M. Roberts, Kathy Keane 1988-5-25 3987 Orange Ranch Mission Viejo: Lower Canada Chiquita, 2.5 kilometers SSE Medium Rancho Survey Mark. 82 Comment
  RSA0022436  Sanicula R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49793 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA471418  Sanicula arguta M. B. Dunkle 1933-4-9 3285 Orange Dana Point Comment
  UCR192231  Sanicula arguta A. C. Sanders, Fred M. Roberts 2008-5-6 35268 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
  RSA534  Sanicula arguta J. T. Howell 1928-3-17 874 Orange Bee Canon, Rancho Santa Ana. 152 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
  UCR193346  Sanicula bipinnatifida A. C. Sanders 2008-5-28 35435 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  CLARK-A1528-1451  Sanicula crassicaulis John C. Roos 1937-5-10 2078 Orange Comment
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Jun 24 2014
  RSA625802  Sanicula crassicaulis Scott D. White, Noel Davis 1998-4-24 6341 Orange Santa Ana Mountains foothills. Mission Viejo Area: Aliso Creek watershed, E of El Toro Road, just N of the junction with Valley Vista Way. Large proposed subdivision called Saddleback Meadow. 305 Comment
  RSA731972  Sanicula crassicaulis var. crassicaulis A. C. Sanders, Fred M. Roberts 2008-4-8 34768 Orange Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd. 457 Comment
  SDSU7979  Satureja chandleri D. F Howe 1947-4-29 1555 Orange San Juan Creek, Santa Ana Mts., Orange Co. Comment
  HSC3171  Schinus molle D. W. Snell 1964-3-27 33 Orange Sterns lease 1.5 mi. E of Brea. Comment
  RSA725514  Schinus molle Fred M. Roberts, Robert L. Allen 2007-9-28 6616 Orange Lomas de Santiago: above lower Santiago Cyn. wash along Santiago Cyn. Rd. just south of Irvine Mesa, 3.3 km N Bolero Lookout. 332 Comment
  RSA650236  Schinus molle Norman Willis 1948-2-8 s.n. Orange Santiago Creek Bed near Orange' 60 Comment
  SD124484  Schinus terebinthifolius Barry A. Prigge 1983-12-17 5520 Orange Santa Ana Marsh, southeasternmost part of oil field just north of Pacific Coast Highway between remnant Santa Ana River channel and dirt road. Comment
  UCR43573  Schinus terebinthifolius B. A. Prigge 1983-12-17 5520 Orange Santa Ana Marsh and adjacent lowlands. SE-most part of oil field just north of Pacific Coast Hwy between remnant Santa Ana River channel and dirt road 2 Comment
  UCR66991  Schinus terebinthifolius A. C. Sanders 1990-10-6 10201 Orange South Coast, Newport Back Bay, SW side at North Star County Beach, SW end of the bay, c. 2 km inland from Hwy 1/ Pacific Coast Hwy 3 Comment
  UCR215277  Schismus barbatus Fred M. Roberts 2008-3-27 6805 Orange South Coast, Dana Point; Dana Point Headlands, Center for Natural Lands Mgmt. Preserve, 0.8 km west Marine Institute, Dana Point Harbor 75 Comment
  POM18286  Schoenoplectus californicus I. M. Johnston 1924-7-10 s.n. Orange Laguna Canyon. Comment
  RSA232214  Schoenoplectus californicus James Henrickson 1970-7-24 4985 Orange 2 miles NW of Huntington Beach around small freshwater industrial pond at eastern margin of Bolsa Chica Salt Marsh along Huntington Beach Mesa. 0 Comment
  RSA234484  Schoenoplectus californicus James Henrickson 1970-7-25 5070 Orange 2 miles N of Huntington Beach along NE margin of Bolsa Chica Salt March 0 Comment
  UCR210371  Schoenoplectus californicus T. B. Salvato, Billy Deane 2006-10-16 1937 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  RSA0071942  Schoenoplectus californicus CNPS Accuracy Assessment Team 2014-5-9 9346 Orange Loma Ridge West. Comment
  RSA232224  Schoenoplectus maritimus James Henrickson 1970-10-3 5358 Orange 3 miles NE of Huntington Beach just N of Bolsa Chica Salt Marsh. 0 Comment
  RSA233015  Schoenoplectus maritimus Christopher Davidson, Gerald L. Benny 1971-6-15 1554 Orange Carbon Canyon, 1 mile SW of Carbon Canyon mineral spring. Comment
  POM50487  Schoenoplectus maritimus Helen D. Geis 501 Orange Peat Lands Comment
  POM6408  Scirpus acutus var. occidentalis Phillip A. Munz, L. T. Street, G. Williams 1914-5-3 2661 Orange Santa Ana River Canyon. Comment
  RSA226634  Scirpus acutus var. occidentalis Christopher Davidson, Gerald L. Benny 1971-6-15 1540 Orange Brea Canyon, 0.5 mile N of Central Avenue, along Brea Creek, near Brea Oil Co. wells. Comment
  RSA564319  Scrophularia californica B. Pitzer, S. Hemstreet 1992-5-21 1944 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. 762 Comment
  RSA647958  Scrophularia californica Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-15 25 Orange 1/2 mile south of Chino Hills State Park. 168 Comment
  RSA733713  Scrophularia californica Kenneth Beard 1934-05 s.n. Orange Ladd Canyon. Comment
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Oct 31 2011
  UCR192099  Scrophularia californica A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35285 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  UCR234150  Scrophularia californica Dick Newell, Judy Booth 2012-3-30 240 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, Cleveland National Forest 258 Comment
  RSA0045321  Scrophularia californica Minor Warne 1934-03 s.n. Orange Gypsum Canyon. Comment
  UC1618101  Scutellaria tuberosa Donald G. Nelson 1935-7-6 258 Orange San Juan Canyon Comment
  CAS-BOT-BC61962  Selaginella John Thomas Howell 1927-6-26 2611 Orange Claymine Canyon, n. Santa Ana Mts. 457 Comment
  CAS-BOT-BC61963  Selaginella John Thomas Howell 1927-7-24 2834 Orange side of Calymine Canyon, n. Santa Ana Mts. 152 Comment
  IRVC3587  Selaginella bigelovii A. S. Boughey 143 Orange [San Juan Canyon], Ortega Hwy, 1mi E San Juan Guard Sta. Santa Ana Mountains Comment
  RSA587117  Senecio aphanactis R. E. Riefner 1994-3-28 94 -206 Orange San Clamente State Beach Comment
  POM272076  Senecio californicus Lyman Benson 1932-3-26 3199 Orange Dana Point. 60 Comment
  RSA12904  Senecio californicus P. C. Everett 1935-3-15 s.n. Orange Rancho Santa Ana Herbarium. Botanic Garden Area, near corner post 3938 183 Comment
  RSA588799  Senecio californicus Fred M. Roberts, D. Bontrager 1990-4-18 4561 Orange Rancho Mission Viejo: ridge between Christianitos and Gabino Canyons (Riverside Cement Lease Holdong), 5.5 km SE Playa Survey Marker. 152 Comment
  RSA737542  Senecio californicus Fred M. Roberts 2008-3-12 6719 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA472959  Senecio flaccidus var. douglasii F. R. Fosberg 1931-6-21 S- 5091 Orange Lower Santiago Canyon. Comment
  RSA685173  Senecio linearifolius Scott D. White 2003-7-7 9613 Orange Irvine, UC Irvine Campus, directly west of T-intersection of Shady Canyon Cr. w/ Bonita Canyon Dr. (= Culver Dr.); Tustin. 70 Comment
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Oct 23 2007
  SBBG122031  Senecio linearifolius S. D. White 2003-7-7 9613 Orange W of intersection of Shady Cyn Crk with Bonita Cyn Drive, UC Irvine Campus 70 Comment
  UC1928639  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.). Comment
  RSA734811  Senecio vulgaris A. C. Sanders, Fred M. Roberts 2008-3-25 34578 Orange Saddle on ridge near head of Weir Canyonm, 5.3 miles ENE of Villa Park, 3.1 mi. N of (Santiago Reservoir) Irvine Lake 405 Comment
  UCR266664  Senna marilandica Fred M. Roberts, Sandra L. 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
  JEPS42884  Sesuvium verrucosum L. M. Booth 1932-7-4 1257 Orange Newport Bay Comment
  POM201707  Sesuvium verrucosum L. M. Booth 1932-7-4 s.n. Orange Newport Lagoon. Comment
  UCSB48233  Setaria F. M. Roberts, Jr. 1981-5-2 242 Orange collected 1.5 km N, along Camino Capistrano, in Mision Viejo Crown Valley Parkway - Mision Viejo, Camino Capistrano and Crown Valley Parkway 49 Comment
  RSA728663  Setaria adhaerens R. E. Riefner 2006-10-8 6 -480 Orange City of Irvine, San Diego Creek, between Alton Pwky. and 405 Fwy 51 Comment
  CLARK-A1528-930  Setaria geniculata Patricia A. Andrews 1975-6-26 5917 Orange Capistrano Bay Beach 9 Comment
  IRVC16250  Setaria lutescens Gordon A. Marsh 1977-9-18 s.n. Orange Dana Point: Canyon betweenPaccific Coast Hwy and Del Obispo. Southern Coastal Comment
  CAS-BOT-BC243592  Setaria parviflora Carl B. Wolf 1932-6-13 3725 Orange Malvern and Nicholas Aves., Fullerton 53 Comment
  CAS-BOT-BC243593  Setaria parviflora Miss. H. D. Geis 1902-5-1 s.n. Orange Santa Ana Comment
  RSA788912  Setaria pumila Fred M. Roberts 2008-9-17 7104 Orange Peninsular Ranges: Santa Ana River Canyon: Yorba Linda Regional Park adjacent to Santa Ana river, South of La Palma Ave. and 1.7 km ENE Imperial Hwy. bridge over river. 87 Comment
  CAS-BOT-BC240116  Setaria sphacelata Ira L. Wiggins 1965-9-26 20266 Orange Just south of Letters and Science Building, California State College at Fullerton 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
  UCR241076  Sidalcea malviflora Dick Newell, Don Millar 2013-4-30 328 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago; lower Hangman's Tree Canyon, 0.1 mi. west of Santiago Canyon Rd. 368 Comment
  RSA788922  Sidalcea malviflora subsp. malviflora Fred M. Roberts 1999-6-23 5244 Orange Peninsular Range, Santa Ana Mtns. Region: Lomas de Santiago: tributary to Santiago Creek, ridge between Limestone Cyn, and Santiago Creek wash across from Pancho Canyon, 1.6 km ENE Bolero Spr. and 1.6 km NNW Bolero Lookout. 396 Comment
  CAS-BOT-BC205738  Sidalcea neomexicana subsp. thurberi P. C. Everett 1935-4-27 6691 Orange Bryant Ranch. NW. Cor. Bryant Ave. & Hansen Rd. 30 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
  RSA88053  Sidalcea neomexicana subsp. thurberi C. L. Hitchcock 1952-5-30 s.n. Orange About 100 yards north of Katella Ave. to west of Hanson St., about 11 miles east of Long Beach Comment
  SEINET6947338  Sidalcea sparsifolia W. P. Vestal, A. G. Vestal 1955-3-24 3453 Orange Trabuco Canyon, 5 miles east of El Toro. Comment
  RSA285  Silene antirrhina J. T. Howell 1928-2-25 851 Orange Between Nolina and Bee Canyon, Rancho Santa Ana. 152 Comment
  RSA734348  Silene antirrhina A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34641 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 396 Comment
  RSA752036  Silene antirrhina Fred M. Roberts 2008-3-27 6813 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 1, 0.5km W Marine Institute (Dana Point Harbor). 45 Comment
  RSA627534  Silene antirrhina Sandy Leatherman, Fred M. Roberts, B. Leatherman, Trish Smith 1998-5-23 14 Orange Black Star Canyon: Spur Road off of Black Star Canyon Road. 335 Comment
  RSA763518  Silene californica Doris Bowers 1965-5-10 167 Orange Near California State Forestry Office, Orange 152 Comment
  POM202105  Silene gallica L. M. Booth 1932-5-12 1016 Orange Newport Bay. Comment
  UCR103160  Silene gallica Scott D. White 1997-3-26 4824 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
  UCR191436  Silene gallica A. C. Sanders, Fred M. Roberts 2008-4-8 34730 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  CAS-BOT-BC386897  Silene gallica Ira L. Wiggins 1966-4-30 20573 Orange field along south side of Brea Olinda Boulevard, near Carolina Avenue. Comment
  UCR162779  Silene laciniata Scott D. White 1997-5-6 5041 Orange Peninsular Ranges; Santa Ana Mountains, Lomas de Santiago. Santiago Canyon area: Ridgetop road N and west of Bolero Lookout 488 Comment
  UCR193496  Silene laciniata A. C. Sanders, T. B. Salvato 2008-5-13 35361 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
  UCR228784  Silene laciniata Dick Newell, Don Millar 2011-5-3 144 Orange Coastal Plains, San Joaquin Hills, Laguna Canyon Wilderness Park, Willow Trail 160 Comment
  UC1543015  Silene laciniata subsp. major Donald G. Nelson 1935-4-6 251 Orange e San Juan Capistrano (San Juan Canyon); e of San Juan Capistrano, San Juan Canyon Comment
  UC1178641  Silene lemmonii Peter Kamb 1948-6-19 1113 Orange se slope of Santiago Peak Santa Ana Mts., se slope of Santiago Peak (Santa Ana Mts., Orange-Riverside Counties) 1219 Comment
  RSA0061172  Silene multinervia Robt. Allen, Trish Smith, Mike Kahle 2006-6-21 s.n. Orange Santa Ana Mountains region: Upper Fremont Canyon, ridge along SE, along unpaved Lakeview Road. 638 Comment
  UCR227633  Silene verecunda subsp. platyota Robt. L. Allen 2003-6-22 12380 Orange Santa Ana Mountains, Modjeska Peak, southwestern arm, 0.6 air mi southwest of the summit 1512 Comment
  IRVC906  Silybum marianum B. Savage 1963-5-15 Orange Newport Beach Comment
  RSA734809  Silybum marianum A. C. Sanders, Fred M. Roberts 2008-5-6 35269 Orange Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 366 Comment
  CAS-BOT-BC75234  Sisymbrium irio L. R. Abrams 1936-4-5 13714 Orange Rancho Santa Ana, Botanic Garden. Santa Ana Canyon. Comment
  CAS-BOT-BC75240  Sisymbrium irio Ira L. Wiggins 1966-3-5 20497 Orange Along Highway S-18 about 4.5 miles east of Laguna Beach. Comment
  IRVC1174  Sisymbrium irio L. Burns 1965-3-15 Orange Corona del Mar, Bayside Dr. Newport Beach Comment
  IRVC1178  Sisymbrium irio C. Duncan 1965-4-3 Orange Newport Beach Comment
  IRVC1180  Sisymbrium irio L. Christy 1965-5-3 Orange Corona del Mar. Pacific Dr.? Newport Beach Comment
  RSA184172  Sisymbrium irio I. L. Wiggins 1966-2-12 20430 Orange N. side of La Palma Ave. near Harbor Blvd., Anaheim. 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
  UCD115604  Sisymbrium orientale Rimo Bacigalupi 1962-3-16 8229 Orange along U.S. 101, 2 miles north of Doheny Beach State Park. Comment
  RSA602117  Sisyrinchium bellum Scott D. White 1997-5-6 5039 Orange Santa Ana Mountians, Santiago Canyon Area: Unnamed tributary to Santiago Creek flowing from the SW, directly W of Pancho Canyon. USGS El Toro quad, Lomas de Santiago S179. 366 Comment
  RSA699166  Sisyrinchium bellum G. Gentges 1932-3-27 s.n. Orange Above Irvine Park. In Santiago Canyon. Comment
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Dec 6 2011
  RSA734803  Sisyrinchium bellum A. C. Sanders, Fred M. Roberts 2008-5-6 35250 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
  RSA7579  Sisyrinchium bellum E. R. Johnson 1933-11 2031 Orange Rancho Santa Ana. Comment
  RSA789225  Sisyrinchium bellum Naomi Fraga 2009-5-11 2716 Orange San Juan loop trail, Cleveland National Forest just west of Sugarloaf Spur Trail. 912 Comment
  UCR151027  Sisyrinchium bellum Scott D. White 1997-5-6 5039 Orange Peninsular Ranges; Santa Ana Mtns., Lomas de Santiago; Santiago Canyon area; unnamed tributary to Santiago Creek flowing from the SW, directly west of Pancho Canyon 396 Comment
  POM9050  Sisyrinchium bellum Philip A. Munz, R. D. Harwood 1920-4-24 2751 Orange Sierra [Freemont] Canyon, Santa Ana Mountains. 366 Comment
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Sep 17 2011
  RSA651593  Sisyrinchium bellum D. Geisinger, R. Miller, E. Baldwin 1959-3-19 s.n. Orange Santa Ana Canyon 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
  RSA743381  Solanum americanum Fred M. Roberts 2008-5-27 7000 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  RSA263702  Solanum douglasii E. W. Lathrop 1974-6-27 7414 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA599185  Solanum douglasii Scott D. White 1997-3-28 4828 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  UC933970  Solanum douglasii Elton F. Paddock 1951-7-22 411 Orange near San Diego County line (San Clemente State Beach, near picnic tables, near railroad tracks); San Clemente State Beach Comment
  UCR191213  Solanum douglasii A. C. Sanders 2008-4-29 35147 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
  UCR193021  Solanum douglasii A. C. Sanders, Mitch Provance 2008-5-20 35417 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile below Modjeska Canyon confluence 355 Comment
  UCR194994  Solanum douglasii A. C. Sanders, Fred M. Roberts 2008-8-7 36003 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  RSA23641  Solanum elaeagnifolium E. R. Johnson 1939-4-25 9499 Orange Santa Ana Canyon. Rancho Santa Ana , along Santa Fe R.R. tracks south of Exp. citrus plot. 122 Comment
  UCR136650  Solanum nigrum F. W. Peirson 1924-2-9 4523 Orange South Coast, between Wintersburg and the sea 9 Comment
  UCR44897  Solanum nigrum B. G. Pitzer, L. F. LaPre 1986-10-20 317 Orange City of Irvine, Drainage channel near intersection of Irvine Blvd. and Sand Canyon Avenue. 91 Comment
  RSA38195  Solanum rostratum Ed Johnson 1946-8-22 11531 Orange sandy river bottom, Rancho Santa Ana, Santa Ana River Canyon 122 Comment
  CAS-BOT-BC156709  Solanum umbelliferum P. A. Munz; L. T. Street; Williams 1919-5-3 2650 Orange Santa Ana River [Canon] Canyon Comment
  RSA731988  Solanum umbelliferum A. C. Sanders, Fred M. Roberts 2008-4-8 34780 Orange Peninsular Range: Lomas de Santiago, SSE os f Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon. 475 Comment
  UC1125059  Solanum umbelliferum A. Lewis 1934-2-1 266 Orange Santa Ana Canyon 152 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
  CHSC13479  Solanum xanti T. N. Casale 1974-4-11 4 Orange At base of road shoulder, ca. 5.1 mi ne of the Mission San Juan Capistrano on Hwy 74. 176 Comment
  UCR141337  Soleirolia soleirolii Robert DeRuff 1990-8-2 394 Orange Southern Coast, Newport Beach, Neport Back Bay, Big Canyon, near Jamboree Road 11 Comment
  CDA25208  Solidago californica A. C. Sanders, Fred M. Roberts 2008-8-7 35998 Orange Peninsular Range; Santa Ana Mountains.; Middle section of Weir Canyon, 1.15 miles (air) SSE of Walnut Canyon Reservoir. Comment
  RSA749303  Solidago californica Fred M. Roberts 1999-4-21 5176 Orange Lomas de Santiago: Loma Ridge, west slope of central Limestone Cyn., about 1.1 km W Silverado Sch. and 4.5 km NNW Bolero Lookout. 326 Comment
  POM201703  Sonchus asper L. M. Booth 1932-7-19 1270 Orange Bolsas Marsh. Comment
  RSA0012749  Sonchus asper Fred M. Roberts 2012-5-10 7574 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
  IRVC9106  Sonchus oleraceus B. Gittins 1963-3-22 70 Orange Orange Coast College Campus. Costa Mesa Comment
  RSA5505  Sonchus oleraceus C. B. Wolf 1932-6-28 3759 Orange Along western half of no. boundary of 40 acre Valencia Orange grove at Bryant Ave. and Hansen Road. 9 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
  UCR239617  Sonchus oleraceus Fred M. Roberts 2012-4-27 7541 Orange Lomas de Santiago, Loma Ridge, west of SR 241, tributary to 'Las Flores' Canyon, near East Loma Ridge Road, 1.6 km southwest Irvine Lake Park Campground and 1.2 km east-southeast of Orange County Emergency Operations Center, Hill 1311 308 Comment
  CAS-BOT-BC374658  Sonchus oleraceus Ira L. Wiggins 1966-2-1 20406 Orange Orange grove just east of Letters & Science building, California State College at Fullerton Comment
  CAS-BOT-BC374659  Sonchus oleraceus Ira L. Wiggins 1966-3-5 20514 Orange Field about 1/2 mi. W. of El Toro Post Office, along Highway S-18 Comment
  RSA647892  Sonchus oleraceus Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-24 30 Orange 1000 ft. northwest of Chino Hills State Park Boundary. 243 Comment
  CAS-BOT-BC235341  Sorghum halepense Helen D. Geis 1902-1-1 557 Orange Unspecified Comment
  CAS-BOT-BC235344  Sorghum halepense Ira L. Wiggins 1965-9-26 20257 Orange About 1.5 mi. above mouth of Carbon Canyon Comment
  JEPS73760  Sorghum halepense L. M. Booth 1932-7-18 1265 Orange Newport Bay, Costa Mesa Comment
  RSA700185  Sorghum halepense Jeanne Paxton 1934-5-1 s.n. Orange Lemon Heights Comment
  POM146217  Spartina foliosa F. M. Reed 1927-11-25 5676 Orange Anaheim Landing Comment
  RSA483175  Spartina foliosa E. Yale Dawson 1948-10-2 5300 Orange Balboa Yacht Harbor, just east of 101 Hwy bridge Comment
  RSA582098  Spartina foliosa Joseph A. Ewan 1932-7-28 7709 Orange East end of Newport Bay Comment
  SD80955  Spartina foliosa James Henrickson 1970-7-24 5024 Orange 2I(c) miles NW of Huntington Beach along south channel of Inner Bolsa bay, adjacent to Pacific Coast Hy. in Bolsa Chica Salt Marsh Comment
  UC1111637  Spartina foliosa Peter H. Raven 1957-9-28 11379 Orange n limits Surfside Comment
  IRVC2456  Spartium junceum K. Durica 1965-3-28 s.n. Orange Costa Mesa. Southern Coastal Comment
  UCR228775  Spartium junceum Dick Newell, Don Millar 2011-5-24 164 Orange Peninsular Range; Santa Ana Mtns., Silverado Canyon Rd. c. 1 mile above Blackstar Canyon Road 333 Comment
  IRVC368  Spergula arvensis D. Ibbetson 1965-4-16 Orange Newport Beach Comment
  RSA0097846  Spergularia macrotheca F. W. Peirson 1924-5-31 4658 Orange Laguna Canyon, Laguna Beach. 91 Comment
  CAS-BOT-BC390855  Spergularia marina John Thomas Howell 1927-6-30 2617 Orange 7 miles east of Long Beach 15 Comment
  IRVC24998  Spergularia marina Fred M. Roberts, H. Camp & R. Fisher 1986-6-20 3022 Orange San Joaquin Freshwater Marsh, near Campus Dr., 1.7km NNW UC Irvine campus center, Irvine 2 Comment
  UCR193386  Spergularia rubra A. C. Sanders, T. B. Salvato 2008-5-13 35347 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
  RSA610223  Spergularia salina Fred M. Roberts, Julie Vanderwier 1997-4-29 5021 Orange Bolsa Chica Salt Marsh; (US Fish & Wildlife Service cell 17) west of old oil field, 0.8 km. S SE Chica Survey Mark. 0 Comment
  RSA0098711  Spergularia villosa Fred M. Roberts, Laura Cohen 2000-3-24 5266 Orange Rancho Mission Viejo Land Conservancy: Tributary to Christanitos Cyn., Flagpole Meadow, upper Shady Canyon Trail, about 1.6 km NW Sycamore Gate. 170 Comment
  RSA542483  Stachys rigida subsp. quercetorum Fred M. Roberts, R. E. Riefner 1988-7-19 4115 Orange Santa Ana Mountains; Maple Springs Truck Trail, Upper Silverado Canyon, 1.9km N Modjeska Peak. 1128 Comment
  RSA131400  Stachys stebbinsii E. K. Balls 1958-6-27 23281 Orange 4.4 miles from Silverado (gate), Silverado Canyon, Santa Ana Mountains. 1021 Comment
  UC1971224  Stebbinsoseris heterocarpa Scott D. White, Noel Davis 1998-4-24 6347 Orange MISSION VIEJO AREA: Aliso Creek watershed, east of El Toro Rd. just N of junction. w/ Valley Vista Wy. Large proposed subdivision called Saddleback Meadow. USGS 7.5' Santiago Peak quad. Comment
  CAS-BOT-BC374782  Stebbinsoseris heterocarpa K. L. Chambers 1954-4-24 482 Orange Hwy. 18-91, Santa Ana Canyon, 7 mi. e. of Olive (hence 11 mi. e. of junction with Hwy. 101 in Anaheim) Comment
  RSA704931  Stellaria media Fred M. Roberts, David E. Bramlet 2004-4-21 6040 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, Flagpole Meadow in upper Shady Canyon, 1.63 km NW Sycamore Gate, 1.18 km W of Cristianitos Road. 168 Comment
  UCR191016  Stellaria media A. C. Sanders, Fred M. Roberts 2008-4-22 35033 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  RSA696187  Stellaria media Keith E. Hoffmaster 1934-1 s.n. Orange Santa Ana. Comment
  UCR150569  Stenotaphrum secundatum Scott D. White, Matt Carlton 2003-11-20 9867 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 24 Comment
  JEPS36708  Stephanomeria diegensis L. M. Booth 1932-8-5 1360 Orange Newport Bay Comment
  RSA703680  Stephanomeria diegensis Fred M. Roberts, David E. Bramlet 2004-11-5 6128 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, west slopes of Cristianitos Cyn., 0.79 km N Sycamore Gate and 0.18 km W Cristianitos Road. 146 Comment
  UCR177707  Stephanomeria diegensis Fred M. Roberts, D. E. Bramlet 2004-11-5 6128 Orange Rancho Mission Viejo; Donna O'Neill Land Conservancy, west slopes of Cristianitos Canyon, 0.79 km N Sycamore Gate and 0.18 km W Cristianitos Road 146 Comment
  SD95151  Stipa coronata Jack L. Reveal 1975-7-18 1764 Orange Occasional among boulders at upper edge of riparian zone, Trabuco Canyon. 550 Comment
  UCR192090  Stipa lepida A. C. Sanders, Fred M. Roberts 2008-5-6 35264 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
  UCR26655  Stipa lepida E. W. Lathrop 1966-4-18 6179 Orange Santa Ana Mtns., 4 mi NE of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District Comment
  HSC79001  Stipa pulchra Steve Boyd 1981-5-13 Orange Pelican Hill, Irvine Ranch property in the San Joaquin Hills S of Corona del Mar Comment
  SEINET10603936  Stipa pulchra LeRoy R. Abrams 1903-4-18 Abrams 3269 Orange Trabuco canon, Capistrano. Comment
  IRVC25397  Stylocline gnaphalioides Fred M. Roberts 1987-4-3 3340 Orange San Joaquin Hills; Irvine; central Shady Canyon, 2.9km NE Signal Hill. Central coastal 107 Comment
  UCSB52865  Stylocline gnaphaloides Roberts, Jr., Fred 1982-4-3 Orange Dana Point Headlands; north of Dana Strand Rd., 0.5 km. W Dana Point Harbor; 0.8 km. SSW Richard Henry Dana School 80 Comment
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Dec 12 2018
  RSA957  Stylocline gnaphaloides J. T. Howell 1928-4-15 917 Orange near east bundary of Rancho Santa Ana 213 Comment
  POM301519  Styrax redivivus J. C. Roos 1937-5-10 2326 Orange East of San Juan Capistrano. Comment
  RSA263773  Styrax redivivus Robert Harvey H- 85 -66 Orange Tan Mine Canyon. Comment
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Oct 15 2013
  RSA514322  Styrax redivivus Reid Moran, Daniel I. Axelrod, B. Smart 1975-7-18 22599 Orange North slope of ridge, upper Trabuco Canyon. 900 Comment
  SBBG128686  Styrax redivivus R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49686 Orange Sierra Peak, Skyline Drive crest, MDT 'Trail' (Main Divide Truck Trail); n Santa Ana Mtns 900 Comment
  POM259534  Suaeda calceoliformis A. C. Keller 1938-7-29 s.n. Orange At entrance to Lido Isle, Newport Comment
  CAS-BOT-BC110387  Suaeda esteroa C. W. Tilforth 1975-9-6 1044 Orange Northeast shoreline of Upper Bay, Newport Beach. Comment
  CAS-BOT-BC438783  Suaeda esteroa R. E. Riefner, Jr. 2012-11-6 12 -533 Orange City of Newport Beach, Newport Bay, North Star Beach, near Newport Aquatic Center, White Cliffs Dr./ N. Star Ln. 2 Comment
  SEINET770649