Search Results — 2000 specimen records retrieved (1604 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
  RSA697264  Abelia X grandiflora M. Gidcomb 1934-09 s.n. Orange Santa Ana Comment
  IRVC28912  Abronia maritima R. E. Reifner 1994-5-22 94 380 Orange San Mateo Point; W of RR tracks, N of County line marker. Southern Coastal 6 Comment
  POM201767  Abronia maritima L. M. Booth 1932-5-25 1113 Orange Balboa Island, Newport Bay. Comment
  RSA460929  Abronia maritima N. C. Cooper 1942-11-9 888 Orange Balboa Comment
  SD41424  Abronia maritima Edith A. Purer 1932-8-31 4880 Orange Sand dunes along Route 101. Comment
  JEPS61217  Abronia umbellata var. umbellata L. M. Booth 1932-5-25 1113 Orange Balboa Island; Newport Bay Comment
  RSA3226  Abronia villosa var. aurita Carl B. Wolf 1931-7-1 2259 Orange Atwood, lower end of Santa Ana Canyon. 107 Comment
  SEINET891576  Acacia baileyana R. J. Barr 1964-1 64 -590 Orange Roadside near Capistrano Beach Comment
  IRVC22784  Acacia mearnsii Fred M. Roberts 1985-6-2 1839 Orange El Camino Real, 0.1km SE Beach Rd., Capistrano Beach 5 Comment
  SEINET947423  Acacia podalyriifolia R. J. Barr 1964-1 64 -588 Orange Roadside near Capistrano Beach Comment
  CAS-BOT-BC333253  Acer macrophyllum James R. Shevock 1974-3-31 3329 Orange In Trabuco Canyon along FS road 5S13. Santa Ana Mts., Cleveland National Forest 548 Comment
  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
  UC218134  Acer macrophyllum P. A. Munz, R. D. Harwood 1920-4-25 6730 Orange Silverado Canyon Santa Ana Mts., Silverado Canyon (along stream) 548 Comment
  UCR228779  Achillea millefolium Dick Newell, E. D. Hill 2011-6-7 169 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon 341 Comment
  RSA562739  Achillea millefolium var. californica Steve Boyd 1992-5-20 7455 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of wilderness in Lucas Canyon along a new section of trail heading up major side canyon northward to Sitton Peak Road (7S09), 305 Comment
  CAS-BOT-BC211912  Achnatherum coronatum John Thomas Howell; Alice Eastwood 1937-4-24 3926 Orange 2 miles east of San Juan Hot Springs Comment
  RSA548854  Achnatherum coronatum Fred M. Roberts, G. A. Marsh 1986-5-16 2859 Orange Upper Lucas Canyon watershed, Sitton Peak Truck Trail, 3km WSW Sitton Peak 730 Comment
  RSA631402  Achnatherum coronatum Valerie L. Soza, LeRoy Gross 1999-6-7 491 Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  RSA639162  Achnatherum coronatum Valerie L. Soza, LeRoy Gross 1999-6-8 502 Orange Santa Ana Mountains: Santiago and Modjeska Canyons, above Tucker Wildlife Sanctuary, above the town of Modjeska 518 Comment
  UCSB42219  Acmispon americanus Roos, John 1965-6-16 Orange Dana Point near Doheney Beach Comment
  UCSB48114  Acmispon americanus Roberts, Jr., Fred 1981-4-12 Orange Santa Ana Mountains; San Juan Canyon, Hwy. 74, 1.3 km. by road E San Juan Guard Station; 0.9 km. SE Juan Rancho Survey Mark 295 Comment
  UCSB47975  Acmispon glaber Roberts, Jr., Fred 1980-2-17 Orange Along Dana Strand road on the north side, on the bluff west of Dana Marina, Dana Point 56 Comment
  SBBG120830  Acmispon heermannii var. heermannii A. C. Sanders, F. M. Roberts, M. Balk 2006-7-20 33005 Orange San Juan Cyn from Lower San Juan Picnic Area to ca. 1 mi downstream, parallel to Hwy 74 366 Comment
  SD234951  Acmispon maritimus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34637 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir. 395 Comment
  UCD170824  Acmispon micranthus A. C. Sanders; Fred M. Roberts 2008-3-25 34520 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills. 259 Comment
  SEINET8077122 Image available Acourtia microcephala A. C. Sanders, Fred M. Roberts 2008-6-17 35485 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
  UCD128505  Acroptilon repens John W. Ingram 1953-12-1 s.n. Orange two miles north of Huntington Beach on State Highway #39. 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
  RSA553109  Adenostoma fasciculatum var. fasciculatum Fred M. Roberts 1989-5-9 4341 Orange Gypsum Canyon, west for, 5.6 km WNW Sierra Peak, 1km S Hwy 91. 146 Comment
  RSA701807  Adiantum capillus-veneris Fred M. Roberts 1999-7-22 5248 Orange Lomas de Santiago: Lomas Ridge, tributary to Limestone Canyon at Dripping Springs. Limestone Wilderness Park. 415 Comment
  RSA739331  Adiantum jordanii Keith E. Hoffmaster 1928-1-26 29 Orange Santa Ana Mtns Comment
  RSA716088  Aeonium Fred M. Roberts 2006-7-27 6397 Orange San Joaquin Hills: Laguna Beach, Temple Hill, 731 Nyes Place, 1.0km NNE Golf Island. 174 Comment
Read comments
Dec 21 2019
  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
  CAS-BOT-BC13322  Agoseris retrorsa L. R. Abrams 1901-6-1 1845 Orange Mount Santiago, near summit Comment
  RSA17144  Agrostis pallens C. B. Wolf 1936-6-17 7945 Orange Santa Ana Mountains, along Ortega Highway 5.6 miles above San Juan Capistrano. 76 Comment
  RSA788920  Agrostis pallens Fred M. Roberts 1999-6-10 5242 Orange Lomas de Santiago: Loma Ridge, Central Limestone Cyn., adjacent to the Sinks, 0.7 km E Bolero Spring and 1.9 km NW Bolero Lookout. 411 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
  CAS-BOT-BC138654  Agrostis stolonifera Carl B. Wolf 1932-6-13 3722 Orange Fullerton, Malvern & Nicholas Aves. 53 Comment
  RSA6042  Agrostis stolonifera C. B. Wolf 1932-7-13 3722 Orange Fullerton. 53 Comment
  RSA759145  Ailanthus altissima Robert Allen, D. Taylor 2008-7-19 s.n. Orange Eastern arm of Bedford Peak, along North Main Divide Road, 2.2 road miles N of junction with Bedford Road, 5.9 miles N of junction with Maple Springs Road. 1155 Comment
  RSA16417  Allium haematochiton Percy C. Everett, E. R. Johnson 1935-5-29 7093 Orange Santa Ana Mountains, head of Claymine Canyon. 732 Comment
  UCR215292  Allium haematochiton Fred M. Roberts, D. E. Bramlet 2008-5-13 6952 Orange Santa Ana Mountains, upper Weir Canyon, central fork, 3.5 km NE of Robbers Peak 369 Comment
  RSA0063249  Allium marvinii Philip A. Munz 1949-5-26 13373 Orange Head of Sierra [Freemont] Canyon, Santa Ana Mountains. 732 Comment
  JEPS56379  Allium praecox Alice King March 1908 Orange near Orange County Park Comment
  SBBG863  Allium praecox H. and M. Dearing 1937-4-12 3100 Orange Santa Ana Cyn Comment
  RSA410099  Allophyllum glutinosum Albert J. Perkins 1914-6-14 s.n. Orange Santiago Peak. Comment
  RSA539356  Allophyllum glutinosum Fred M. Roberts 1988-6-10 4100 Orange Modejeska Peak, 0.8 km SW summit along crest. 1548 Comment
  RSA2074  Alnus rhombifolia C. B. Wolf 1931-3-6 1855 Orange Trabuco Canyon, 1.5 mile below Trabuco Camp Grounds, west slope of Santa Ana Mountains. 610 Comment
  RSA696343  Alnus rhombifolia Minor Warne 1934-02 s.n. Orange Modjeska Canyon Comment
  RSA734635  Alnus rhombifolia A. C. Sanders, T. B. Salvato 2008-5-13 35366 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  UCR234157  Alnus rhombifolia Dick Newell, Judy Booth 2012-3-25 233 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, 1.5 miles above Maple Springs entrance 615 Comment
  UCR26948  Alnus rhombifolia E. W. Lathrop 1966-3-23 6100 Orange Santa Ana Mtns, Cleveland National Forest, Trabuco District. 4 mi. NE of Lake Irvine, Black Star Canyon Comment
  RSA234474  Amaranthus albus James Henrickson 1970-7-24 4975 Orange 1.5 miles NW of Huntington Beach along NW facing base of Huntington Beach Mesa bordering Bolsa Chica Salt Marsh. 3 Comment
  CHSC35337  Amaranthus blitoides James Henrickson 1972-10-21 8069 Orange Newport Beach, So. Of Jamboree Rd., E. of Irvine Coast Country Club near U. C. Irvine. Comment
  SD136944  Amaranthus blitoides Steve Boyd, Tim Ross 1994-9-14 8345 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Lucas Canyon trail at stream crossing in Aliso Canyon 309 Comment
  POM201837  Amaranthus blitoides L. M. Booth 1932-12-16 1377 Orange Santa Ana River, near coast of Orange. Comment
  RSA724071  Amaranthus blitum subsp. emarginatus R. E. Riefner 2005-7-9 5 -546 Orange City of Huntington Beach, Huntington Central Park at Goldenwest St. 1 Comment
  CLARK-A1528-979  Amaranthus californicus Patricia A. Andrews 1975-6-26 5930 Orange Capistrano Bay Beach 9 Comment
  JEPS54308  Amaranthus hybridus Lawrence M. Booth 1932-7-21 1295 Orange Anaheim Creek Comment
  UCR280801  Amaranthus hybridus David Yu 2017-5-21 027 Orange South Coast, Irvine, Turtle Rock Trail, behind Chaparral Park, along a stairway leading to a rocky hillside, 1 mile west of 6507 Turtle Rock Drive Comment
  UC537271  Amaranthus powellii Lawrence M. Booth 1932-7-21 1295 Orange Anaheim Marsh Comment
  JEPS54319  Amaranthus retroflexus Lawrence M. Booth 1932-7-25 1307 Orange Santa Ana River, near coast Santa Ana River Comment
  UCR111749  Amaranthus retroflexus G. S. Nuessly 1980-11-27 s.n. Orange South Coast, south side of East Santiago Canyon Road, 0.25 mi north [west] of North Windes Drive 137 Comment
  POM5985  Amblyopappus pusillus Philip A. Munz 1918-5-5 2186 Orange Laguna Beach. Comment
  CAS-BOT-BC13772  Ambrosia chamissonis David D. Keck 1933-9-8 2542 Orange Sunset Beach Comment
  SBBG61136  Ambrosia chamissonis M. N. Ackley -Sep-1928 245 Orange Sunset Beach 8 Comment
  SD143591  Ambrosia chamissonis R. D. Goeden, D. W. Ricker 1970-4-29 Orange Newport Beach, northwest edge of town between Seashore Dr., Neptune Ave., 56th and 58th streets 2 Comment
  SD143592  Ambrosia chamissonis R. D. Goeden, D. W. Ricker 1970-2-19 Orange Newport Beach, northwest edge of town between Seashore Dr., Neptune Ave., 56th and 58th streets 2 Comment
  RSA416942  Ambrosia chamissonis A. M. Johnson 1931-3-21 3817 Orange Newport. Comment
  POM318608  Ambrosia chamissonis var. chamissonis Patricia Wilder 1972-6-27 5390 Orange Along strand of Capistrano Beach 3 Comment
  POM324260  Ambrosia chamissonis var. chamissonis Barbara L. Wilson 1967-6-3 22 Orange Laguna Beach. 30 Comment
  POM122758  Ambrosia psilostachya Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA725462  Ambrosia psilostachya Fred M. Roberts 2007-8-6 6555 Orange San Joaquin Hills: Laguna Beach, Laguna Cyn. on east side of Laguna Cyn. Rd. adj. to dog park, 1.2 km S (air) from El Toro Road and 1.8 km WSW Moulton Survey Mk. 52 Comment
  SD263545  Ambrosia psilostachya Jim Riley 2013-10-15 119 Orange San Clemente area; 0.56 miles ESE intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 68 Comment
  UC729846  Ambrosia psilostachya Carl B. Wolf 1932-7-7 Orange Bixby Ave., s edge of field, .2 mi w of Hansen Rd, .2 mi w of se corner of ne 40 Bryant Ranch Comment
  UCR73108  Ambrosia psilostachya Scott D. White 1992-9-29 846 Orange Vicinity of City of Brea, immediately north of Carbon Canyon Road and east of Placentia Avenue, +- 1 mi (airline) SSE of Tonner Canyon 183 Comment
  RSA5243  Ambrosia psilostachya C. B. Wolf 1932-9-13 4031 Orange Bryant Ranch: Triangle of waste ground S of Bryant Ave., & 1/2 mi. west of Los Alamitos Blvd. (Triangle waste ground at NW corner of SW 1/4 sect. 30 T4S R11W) 8 Comment
  RSA5939  Ambrosia psilostachya C. B. Wolf 1932-7-7 3841 Orange Bryant Ranch ; On Bixby Ave. 2/10 mi. W of Hansen Road. 9 Comment
  RSA7462  Amorpha californica C. B. Wolf 1933-8-24 5380 Orange 1/2 mile below summit of Bedford Motorway, east slope of Santa Ana Mountains. 976 Comment
  CAS-BOT-BC180616  Amorpha californica var. californica L. R. Abrams 1901-6-1 1828 Orange Santa Ana Mts. Comment
  CAS-BOT-BC180619  Amorpha californica var. californica P. C. Everett 1935-6-19 7235 Orange 1/2 mi. below (W.) head of canyon, Trabuco Canyon, Santa Ana Mts. 1066 Comment
  UCR240112  Amorpha fruticosa Dick Newell, Don Millar 2012-5-22 260 Orange Peninsular Range; Santa Ana Mtns., mouth of Fremont Canyon, 0.4 mi. NE of Irvine Dam spillway 207 Comment
  CLARK-A1528-460  Amorpha fruticosa var. occidentalis Dave Cerf 1971-4-17 Orange Orange Park Acres 243 Comment
  UC174984  Amsinckia C. F. Baker 4095 Orange Anaheim; Pacific Coast Comment
  RSA699548  Amsinckia douglasiana J. R. Bruff s.n. Orange Roadside. Comment
  HSC3522  Amsinckia intermedia J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  IRVC29087  Amsinckia intermedia Fred M. Roberts 1989-3-17 4202 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  OBI6061  Amsinckia intermedia Carl B. Wolf 1931-3-6 1864 Orange E side of Orange county Park 152 Comment
  RSA722350  Amsinckia intermedia E. Culver s.n. Orange Orange orchard. 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
  IRVC245  Amsinckia menziesii var. intermedia D. Orr 1965-3-27 Orange Trabuco Rd. 3mi E El Toro Marine Base. El Toro Comment
  IRVC201  Amsinckia menziesii var. intermedia S. Parks 1965-4-6 Orange Newport Back Bay. Newport Beach Comment
  HSC17835  Anagallis arvensis J. W. Johnson 1961-3-29 Orange Newport Beach, on S side of upper Newport Bay 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
  UCR96890  Anagallis arvensis Scott D. White 1993-4-28 1288 Orange Pacific slope, Tustin Marine Corps Air Station, NW of Peters Canyon Channel, between Moffett Dr. & Warner Comment
  RSA465135  Anagallis arvensis M. B. Dunkle 1933-4-9 3273 Orange Dana Point. Comment
  CDA5480  Anagallis arvensis subsp. arvensis J. McNeill 1969-4-17 3069 Orange U.C. Irvine Campus. Comment
  POM1029  Andropogon glomeratus C. B. Bradshaw s.n. Orange San Joaquin Ranch near Laguna. Comment
  CAS-BOT-BC400329  Anemopsis californica Herbert L. Mason 1926-4-25 2902 Orange Near Laguna Comment
  CAS-BOT-BC400332  Anemopsis californica E. Frost 1996-5-11 12 Orange Newport Back Bay, 150 yards in along bike path 7 Comment
  RSA5818  Anemopsis californica C. B. Wolf 1932-6-28 3803 Orange Edge of field and road (Bixby Ave.) 650 ft. east of SW corner of NW 1/4 of NW 1/4 of Sect. 33. Comment
  IRVC26961  Anemopsis californica Peter A. Bowler 2003-4-20 s.n. Orange UC San Joaquin Freshwater Marsh Reserve; in marsh at Nedge of marsh beside UCI Arboretum. Southern Coastal 3 Comment
  UCSB48026  Anemopsis californica Roberts, Fred 1980-5-4 Orange Mission Viejo: along Santa Fe Railroad and Camino Capistrano, 1.7km N Crown Valley Parkway; 1.1km S BM 316 49 Comment
  IRVC17996  Anthemis cotula A. B. McGee 1970-9-9 Orange San Diego Creek Channel adjacent to San Joaquin Freshwater Marsh. Irvine Comment
  RSA768  Anthemis cotula J. T. Howell 1927-7-18 425 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  RSA0045566  Anthemis cotula Minor Warne 1934-5-19 s.n. Orange Trabuco. Comment
  UCR657  Antirrhinum coulterianum Geoffrey Matthews, Jim Hearne, Robin Maetche 1971-5-15 s.n. Orange Peninsular Range; Santa Ana Mtns., 3 mi north of Morrill Valley on Hwy 74 Comment
  RSA594824  Antirrhinum kelloggii Fred M. Roberts, Sandra Leatherman, Brian Leatherman 1994-4-24 4918 Orange Santa Ana Mountains: San Juan Canyon, south side of CA route 74, 1 kilometers NNW San Juan Survey Mark. 268 Comment
  RSA749473  Antirrhinum kelloggii Fred M. Roberts, Linda Farley 2008-3-28 6828 Orange Santa Ana Mtns.: Upper Weir Cyn., Irvine Ranch Conservancy, 3.3 km ENE Robbers Peak on ridge north of canyon. 427 Comment
  RSA737890  Antirrhinum multiflorum R. E. Riefner 2008-5-15 09 -83 Orange Irvine Ranch Reseve, N Irvine Ranch, E Fork cliffs at upper Fremont Canyon along Black Star SCE road. 610 Comment
  UCR192112  Antirrhinum nuttallianum A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35315 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  UCR224161  Antirrhinum nuttallianum subsp. subsessile Fred M. Roberts 2008-3-19 6784 Orange South Coast, Dana Point Headlands, Center for Natural Lands Mgmt. Preserve, 0.8 km west of the Marine Institute, Dana Point Harbor 45 Comment
  RSA698988  Antirrhinum strictum Unspecified 1935-04 s.n. Orange Silverado Canyon. Comment
  CAS-BOT-BC447685  Aphanes arvensis P. A. Munz 1918-5-4 2223 Orange Laguna Beach Region, Laguna Canyon Comment
  POM183948  Aphanisma blitoides P. A. Munz 1932-3-29 12192 Orange Costa Mesa. Comment
Read comments
Dec 4 2014
  RSA737482  Apiastrum angustifolium Fred M. Roberts 2008-3-12 6734 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  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
  RSA232218  Apium graveolens James Henrickson 1970-7-24 4993 Orange 2 miles NNW or Huntington Beach around small freshwater industrial pond at eastern margin of Bolsa Chica Salt Marsh along Huntington Beach Mesa. 0 Comment
  POM324025  Aptenia cordifolia Greg Wright 1971-7-17 314 Orange Pacific Coast Highway south of Laguna, Aliso Creek, inland from highway. 8 Comment
  RSA542587  Aralia californica Fred M. Roberts, R. E. Riefner 1988-7-19 4114 Orange Santa Ana Mountains; Maple Springs Truck Trail, Upper Silverado Canyon, 1.9km N Modjeska Peak. 1128 Comment
  RSA0061174  Aralia californica Robt. Allen 2007-8-11 s.n. Orange Santa Ana Mountains region: Silverado Canyon, Big Cone Springs. Along Maple Springs Road (5S04), 4.6 road miles N of Forest Gate. East side of roadway. 1099 Comment
  UCR228889  Araujia sericifera Dick Newell, Don Millar 2011-7-19 215 Orange Peninsular Range; Santa Ana Mtns., Irvine Regional Park 181 Comment
  SD255137  Arbutus menziesii R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49826 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  LA42394  Arctostaphylos glandulosa W. Pequegnat; 1938-3-19 sn Orange Santa Ana Mountains, Holy Jim Trail 1219 Comment
  RSA629336  Arctostaphylos glandulosa Jon E. Keeley 1992-6-12 15521 Orange North of El Cariso on road to Los Pinos Pk, 3.8 km north of Hwy 74. 1000 Comment
  UCR273480  Arctostaphylos glandulosa A. C. Sanders, Glen Morrison 2016-8-4 42607 Orange Peninsular Range; Santa Ana Mountains, North Main Divide Road (Forest Rte 3S04) between Hwy 74 and Los Pinos Spring, 2.3 km NW (312 deg. ) of El Cariso Fire Station 959 Comment
  UCR282234  Arctostaphylos glandulosa A. C. Sanders, Yi Huang 2017-3-3 42700 Orange Peninsular Range; Santa Ana Mtns., North Main Divide Road, 3.5 km north of Hwy 74 960 Comment
  POM254950  Arctostaphylos glandulosa subsp. glandulosa W. Pequegnat 1940-6-13 s.n. Orange Bear Springs, Santa Ana Mts. Comment
  RSA629330  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15516 Orange Road 5S05, 5.5 km north of Hwy. 74. At El Cariso. 1000 Comment
  RSA629344  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15501 Orange Road to Blue Jay Campground, 1 km south of Hotshot Camp, north of Ortega Hwy. (Hwy. 74). 800 Comment
  RSA797659  Arctostaphylos glandulosa subsp. glandulosa R. F. Thorne, E. W. Lathrop 1977-5-18 49762 Orange Santa Ana Mountains: at head of Trabuco Canyon Trail Comment
  UCSB48020  Arctostaphylos glandulosa subsp. glandulosa Roberts, Fred 1981-4-11 Orange Santa Ana Mtns.; Main Divide Truck Trail at junction with road leading to Blue Jay Campground, 1.0 km. N Blue Jay Campground 1132 Comment
  SEINET10449244  Arctostaphylos hookeri James S. Miller 2001-12-15 Miller 10654 Orange Rancho Santa Ana Botanic Garden, Santa Ana, CA. Comment
  RSA0013972  Argemone munita Fred M. Roberts 2008-5-20 6992 Orange Lomas de Santiago: Santiago Creek wash north of Hanging Man's Tree Road near confluence of Pancho Cyn., 1.6 km NW Bolero Lookout. Irvine Ranch Conservancy. 349 Comment
  CAS-BOT-BC401733  Argemone munita subsp. robusta Carl B. Wolf 1937-12-3 9382 Orange Santa Ana Mts., main divide motorway, between Santiago Peak and Modjeska Peak 1645 Comment
  RSA588884  Aristida adscensionis Fred M. Roberts, D. Bontrager 1990-6-5 4670 Orange Rancho Mission Viejo: Uper Gabino Canyon, near Orange County line, 3.9 kilometers E Point Ranch Survey Marker; UTM Z11 37 10 300m N, 4 52 100m E. 280 Comment
  RSA703846  Aristida purpurea var. parishii D. E. Bramlet, Fred M. Roberts 2003-3-13 3336 Orange Donna O'Neill Reserve. North east ridge line 762m W of Cristianitos Rd., and 1.15 km N of the E-W Access road., 11S 04 46 955E, 37 05 838N) 198 Comment
  UCSB52874  Aristida purpurea var. parishii Roberts, Fred 1983-4-16 Orange Laguna Beach, Sycamore Hills, central ridge; 1.4 km NNE jct of El Toro and Laguna Cyn Rds; 5.4 km ESE Signal Peak 117 Comment
  RSA708236  Arrhenatherum elatius Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6235 Orange Modjeska Peak, west slope along summit road, 0.15km by air W summit. 1613 Comment
  JEPS36923  Artemisia biennis L. M. Booth 1932-7-4 1250 Orange Newport Bay Comment
  RSA776  Artemisia biennis J. T. Howell 1927-10-29 784 Orange Bryant Ranch near Long Beach. 15 Comment
  RSA0044743  Artemisia californica Fred M. Roberts, Arthur Davenport 2003-9-11 6018 Orange Rancho Mission Viego: Donna O'Neill Land Conservancy, Cristianitos Cyn., 85m SSW Sycamore Gate, 35m W of Cristianitos Road. 119 Comment
  UC536946  Artemisia californica Lawrence M. Booth 1932-7-27 1327 Orange Newport Bay Comment
  UCD129226  Artemisia californica B. Pitzer 1997-11-8 3373 Orange Crystal Cove State Park: Pelican Point Area, grassland area between Pacific Coast Hwy and the bike trail. Open areas adjacent to parking lot. 30 Comment
  UCR92774  Artemisia californica F. M. Reed 1927-11-10 5640 Orange South Coast, Sulfur Slide Hill in Santa Ana River Canyon 150 Comment
  UCSB48242  Artemisia douglasiana Roberts, Fred 1981-7-21 Orange Santa Ana Mtns.; 0.7 km. SE Blue Jay Camp Ground 939 Comment
  RSA748272  Artemisia dracunculus A. C. Sanders, Fred M. Roberts 2008-6-17 35514 Orange middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  RSA0042766  Artemisia palmeri Fred M. Roberts 2012-7-18 7669 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
  JEPS36950  Artemisia tridentata subsp. tridentata John Thomas Howell 1927-10-22 3165 Orange Rancho Santa Ana Santa Ana river bottom, Rancho Santa Ana 152 Comment
  HSC4510  Arthrocnemum subterminale J. W. Johnson 1961-3-30 Orange Newport Beach, seep along cliff base at N side of Big Canyon near upper Bay Rd. Comment
Read comments
Jul 17 2015
  UCSB23299  Arthrocnemum subterminale Keefe, Joseph 1967-3-26 Orange Newport Bay, on Back Bay Drive, 2.0 miles northeast of junction with Jamboree Drive, Corona del Mar 3 Comment
  POM48005  Arthrocnemum subterminale I. M. Johnston 1924-8-29 s.n. Orange Corona Del Mar Comment
  UCSB48010  Asclepias californica 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
  RSA0104738  Asclepias eriocarpa A. C. Sanders, Fred M. Roberts 2008-7-3 35672 Orange Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor. 365 Comment
  RSA563  Asclepias eriocarpa J. T. Howell 1927-7-16 417 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA657741  Asclepias eriocarpa Ken Greby 1985-5-17 25 Orange On hillsides behind PG and E substation located 2 km. SE from Laguna Canyon Rd., on El Toro Rd., adjacent to Leisure World. Comment
  RSA696499  Asclepias fascicularis Keith E. Hoffmaster 1934-7-15 115 Orange Near Santa Ana Comment
  IRVC24991  Asclepias fascicularis Fred M. Roberts, R. Fisher 1986-6-18 3014 Orange Irvine; [San Joaquin Hills], east lateral to Shady Canyon, c.a. 2.9km SE French Hill. 82 Comment
  RSA5959  Asclepias fascicularis C. B. Wolf 1932-7-7 3853 Orange Bixby Ave, about 1 mi. east of Los Alamitos Blvd., 100 ft. W. of S.E. corner of N.E 1/4 of N.W 1/4 Comment
  RSA93352  Aster bernardinus F. W. Peirson 1924-8-29 5065 Orange roadside 4 miles south of Santa Ana. Comment
  CDA23617  Aster subulatus var. ligulatus A. Thomas, Mark A. Elvin 2006-9-23 609232 Orange Southern Coastal; San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; southwest edge, along San Diego Creek, north of University Drive, east of Highway 73. Comment
  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
  RSA5862  Aster subulatus var. ligulatus C. B. Wolf 1932-9-16 4114 Orange San Gabriel River, bordering Los Alamitos Bay 2 Comment
  CAS-BOT-BC180452  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
  UCR224310  Astragalus brauntonii Justin M. Wood 2010-5-12 1686 Orange Santa Ana Canyon, Santa Ana River floodplain, 0.25 mi north of Coal Canyon Wildlife Corridor, west of Green River Golf Course on bluff south of the river 122 Comment
  RSA562825  Astragalus gambelianus Steve Boyd, T. S. Ross 1992-5-20 7458 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
  RSA651494  Astragalus gambelianus D. E. Bramlet 2000-4-21 2989 Orange Exposed terraces west of Blind Cyn. and North of Irvine Park. The site is 1.5 km west of Blind Canyon and 76m north of Irvine Park. This locality is 122m southwest of the MWD access road. 226 Comment
  RSA549994  Astragalus trichopodus Scott D. White 1992-9-23 859 Orange Vicinity of Olinda, near city of Brea, immediately N of Carbon Cyn Rd & E of Placentia Ave.; ca. 1 mi. (airline) SSE of Tonner Cyn. 183 Comment
  OBI5666  Astragalus trichopodus var. lonchus Carl B. Wolf 1931-3-6 1860 Orange 1.5 mi below Trabuco Camp Ground, Trabuco Cyn, W slope of Santa Ana Mts 549 Comment
  CDA23091  Atriplex Mark A. Elvin, D. G. Kelch 2006-12-9 5306 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  CDA23154  Atriplex Mark A. Elvin, D. G. Kelch 2006-12-9 5309 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  IRVC29871  Atriplex Mark A. Elvin, D. Kelch 2006-12-9 5299 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
  UC1980254  Atriplex amnicola R. E. Riefner Jr. 2006-5-7 06 -180 Orange North end of City of San Clemente, along I-5 Freeway, N side, immediately S of Camino de Estrella exit ramp. Comment
  UCR203880  Atriplex amnicola R. E. Riefner Jr. 2005-9-9 05- 659 Orange South Coast, city of Dana Point, beach south of Salt Creek, past Ritz Carlton Hotel on Pacific Coast Hwy 2 Comment
  UCR240254  Atriplex amnicola R. E. Riefner Jr. 2006-2-12 06- 21 Orange South Coast, N end of City of San Clemente, along N-bound I-5, immediately S of Camino de Estrella exit ramp 66 Comment
  RSA737243  Atriplex amnicola R. E. Riefner 2006-4-17 06 -155 Orange Upper Newport Bay, near Bayview Wy and Bayview Pl. 7 Comment
  RSA737375  Atriplex amnicola R. E. Riefner 2006-5-7 06 -180 Orange N end of City of San Clemente, along I5, N side, immediately S of Camino De Estrella exit ramp. 66 Comment
  POM17484  Atriplex californica P. A. Munz 1923-4-1 6912 Orange Laguna Lakes. 61 Comment
  RSA452403  Atriplex californica Albert J. Perkins 1923-05 s.n. Orange Laguna heights 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
  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
  RSA256  Atriplex canescens J. T. Howell 1927-7-29 519 Orange Near east boundary of Rancho Santa Ana. 152 Comment
  RSA624453  Atriplex canescens L. C. Wheeler 1933-10-21 2221 Orange Newport Bay. 3 Comment
  UCR193044  Atriplex canescens A. C. Sanders, Fred M. Roberts 2008-6-17 35484 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, East Loma Ridge Spur Road c. 300 m NW of Shoestring Rd. junction, on ridge above tollway, 1.35 mi. SSW of Irvine Lake 398 Comment
  CAS-BOT-BC170193  Atriplex canescens subsp. canescens Joseph Andorfer Ewan 1932-7-28 7707 Orange Seaward bluffs at Corona del Mar. Comment
  CAS-BOT-BC170195  Atriplex canescens subsp. canescens John Thomas Howell 1927-10-22 3163 Orange In hills on n. side of Santa Ana Canyon. 152 Comment
  CAS-BOT-BC172634  Atriplex coulteri P. A. Munz 1918-5-5 2178 Orange Laguna Beach Comment
  UCR133201  Atriplex coulteri D. E. Bramlet 1994-4-30 2377 Orange San Joaquin Hills, at the head of Bommer Canyon, approximately 30 m NE of the ridgeline truck trail, near peak 1033 296 Comment
  CAS-BOT-BC170606  Atriplex glauca A. C. Sanders 2008-4-29 35139 Orange Lomas de Santiago, western end of Loma Ridge on road to sheriff's trianing facility, c. 1.5 mi. SW of Santiago Reservoir, Black Star Canyon 7.5' - Peninsular Range, Santa Ana Mtns. 335 Comment
  SBBG133612  Atriplex glauca R. E. Riefner Jr. 2005-12-31 05 -784 Orange ca. 0.5 mi N of Alton Pkwy on E side of SR-241; Lake Forest 230 Comment
  RSA18531  Atriplex lentiformis subsp. breweri C. B. Wolf 1927-7-23 667 Orange Along the coast just north of San Clemente. Comment
  SEINET11247700 Image available Atriplex lentiformis subsp. breweri Tom Hensel 1973-7-6 248 Orange 1.8 miles S of Doheny State Park along E side of Pacific Coast Hwy (US # 1), Capistrano Beach 1 Ca. Comment
  UC7046  Atriplex lentiformis subsp. lentiformis unknown 1896-6 Orange San Juan <Capistrano>; Seashore Comment
  POM641  Atriplex leucophylla D. L. Crawford 1925-07 s.n. Orange Beach Comment
  UC219363  Atriplex pacifica D. L. Crawford 1916-5-5 Orange Laguna Beach Laguna Beach (bluffs along shore, Southern California) Comment
  UCD97575  Atriplex rhagodioides D. E. Bramlet 2003-6-17 3466 Orange Upper Newport Bay, Big Canyon. This site is located in Big Canyon, 128 m east of Backbay Drive and 70 m south of the existing maintenance road. 7 Comment
  UCR128136  Atriplex rhagodioides Roger E. Reinke 2003-2-18 s.n. Orange South Coast, Newport Back Bay, Big Canyon 30 Comment
  IRVC16607  Atriplex rosea G. Marsh 1970-6-17 Orange Santa Ana River, south bank near Coast Hwy. Newport Beach Comment
  UCSC000220  Atriplex rosea Lawrence M. Booth 1932-7-4 1256 Orange Newport Lagoon Comment
  POM47596  Atriplex rosea I. M. Johnston 1924-8-29 s.n. Orange 4 miles S of Santa Ana Comment
  CDA23155  Atriplex semibaccata Mark A. Elvin, D. G. Kelch 2006-12-9 5296 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  RSA743498  Atriplex semibaccata Fred M. Roberts 2008-7-10 7070 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
  SD237407  Atriplex semibaccata T. B. Salvo 2010-9-27 5105 Orange South Coast: Dana Point Headlands, Harbor Point Park, south of Scenic Dr. and Cove Rd., beyond the end of Green Lantern., overlooking Dana Point Harbor. 52 Comment
  UCSB48087  Atriplex semibaccata Roberts, Jr., Fred 1981-5-2 Orange Mission Viejo; Camino Capistrano, 1.7 km. N Crown Valley Parkway 49 Comment
  RSA297187  Atriplex serenana L. M. Booth 1932-7-1 1248 Orange Newport Bay. Comment
  RSA593863  Atriplex serenana R. E. Riefner 1995-4-17 95 -73 Orange San Clemente State Beach, in south bluff area. Comment
  RSA5955  Atriplex serenana C. B. Wolf 1932-7-7 3846 Orange Bixby Ave., 0.7 mile W of Hansen road (0.2 mile W of SE corner of NE/4 of NW/4). 8 Comment
  RSA452383  Atriplex serenana var. davidsonii L. C. Wheeler 1934-1-14 2363 Orange Aliso Creek near Laguna. 76 Comment
  IRVC25483  Atriplex serenana var. serenana Fred M. Roberts 1987-7-28 3508 Orange Peter's [Creek] Channel at Barranca Crossing, Irvine 8 Comment
  SBBG119391  Atriplex suberecta T. Perring with T. Pinckard 1994-3-2 Orange Marine Helicopter Station at the corner of Moffett Dr and Jamboree Rd, Tustin 11 Comment
  UCR143653  Atriplex suberecta Tom Perring, Tracy Pinckard 1994-3-2 s.n. Orange South Coast, Tustin, Marine Helicopter Station at the corner of Moffett Drive and Jamboree Rd. 11 Comment
  RSA703251  Atriplex suberecta R. E. Riefner Jr. 1999-5-22 4 -292 Orange City of Dana Point, west of Pacific Coast Hwy., vicinity of Salt Creek Park and Ritz Carlton Hotel. 15 Comment
  RSA528044  Atriplex subspicata A. C. Sanders 1990-10-6 10189 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Highway 1. 1 Comment
  RSA453967  Atriplex watsonii F. R. Fosberg 1930-7-10 S 3188 Orange Anaheim Landing. [Los Angeles Co. on label] Comment
  RSA697700  Avena barbata Anonymous s.n. Orange Orange County park Comment
  UCR192481  Avena barbata A. C. Sanders, Fred M. Roberts 2008-3-25 34517 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  CAS-BOT-BC146155  Avena fatua Ira L. Wiggins 1966-3-22 20555 Orange Floor of Silverado Canyon about 0.5 mile below entrance to Cleveland National Forest. Comment
  CDA22567  Avena fatua J. B. Anderson 1966-4-16 584 Orange South Coast; Corona Del Mar: Buck Gully, Little Corona Beach Comment
  RSA734680  Avena fatua A. C. Sanders, T. B. Salvato 2008-5-13 35336 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
  RSA781941  Avena fatua Mark A. Elvin 2003-2-23 2316 Orange Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  UC577599  Avena fatua A. Lewis Apr 1934 Orange San Joaquin Hills Corona Quadrangle Comment
  IRVC23261  Azolla filiculoides Fred M. Roberts 1985-7-17 2029 Orange San Juan Capistrano: San Juan Creek at 405 Fwy bridge Southern Coastal 21 Comment
  IRVC29728  Azolla filiculoides Mark A. Elvin, Barry S. Nerhus 2006-11-4 5240 Orange Huntington Beach; 1.5 km SW of Wintersburg, SW of jct Slater and Goldenwest; Shipley Nature Center. Southern Coastal 1 Comment
  RSA13  Azolla filiculoides John Thomas Howell 1927-7-6 284 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  RSA17461  Azolla filiculoides Carl B. Wolf 1936-9-21 8273 Orange Rancho Santa Ana, Santa Ana Canyon 121 Comment
  UCR205873  Baccharis malibuensis R. E. Riefner Jr. 2008-7-2 08- 181 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Road 660 Comment
  RSA741698  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08 -171 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Rd. 495 Comment
  RSA741701  Baccharis malibuensis R. E. Riefner Jr. 2008-7-2 08 -181 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 660 Comment
  CAS-BOT-BC99446  Baccharis pilularis B. Pitzer; T. Tennant 1997-11-8 3374 Orange Crystal Cove State Park: Pelican Point Area, grassland area between Pacific Coast Hwy & the bike trail 30 Comment
  SD108950  Baccharis pilularis James Henrickson 1972-10-21 8047 Orange Eastern Anaheim, 2 blocks east of Imperial Highway, along La Palma Avenue, just north of Santa Ana River. 60 Comment
  LA203035  Baccharis pilularis subsp. consanguinea C. B. Wolf; 1934-12-26 6262 Orange S-end of town of San Clemente 15 Comment
  CHSC13483  Baccharis salicifolia T. R. Casale 1974-4-11 7 Orange Ca. 1.3 mi NE of the Mission San Juan Capistrano on Hwy 24. 42 Comment
  RSA301940  Baccharis salicifolia Jim Shevock 1970-10-19 s.n. Orange Newport Back Bay 152 Comment
  RSA357002  Baccharis salicifolia R. F. Thorne 1975-4-6 45577 Orange Head of Newport Bay. Comment
  RSA658218  Baccharis salicifolia T. A. Daubert 1991-5-19 649 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  RSA734659  Baccharis salicifolia A. C. Sanders, Fred M. Roberts, Amber O'Neal, David E. Bramlet 2008-5-9 35295 Orange Weir Canyon, c. 1.1 mi. E of Walnut Cyn Reservoir. 277 Comment
  UCR100454  Baccharis salicifolia B. G. Pitzer 1996-4-30 2769 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR186689  Baccharis salicifolia T. B. Salvato, Katie Kurtz, Mitch Provance 2006-10-15 1911 Orange South Coast, Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Drive 6 Comment
  RSA587883  Baccharis salicifolia Fred M. Roberts 1990-5-8 4616 Orange Soquel Canyon, 1.2km NNW Gilman Peak 240 Comment
  JEPS21857  Baccharis salicifolia subsp. salicifolia Annette Waters 1958-3-30 161 Orange 3.2 mi ne of, on State Highway 91, 18 Atwood Placentara turnoff Comment
  UCD129399  Baccharis salicina A. C. Sanders 1990-10-6 10199 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Hwy 1. 1 Comment
  UCR207540  Baccharis salicina O. F. Clarke, Roger E. Reinke 2004-11-14 s.n. Orange South Coast, Newport Back Bay 3 Comment
  UCR66999  Baccharis salicina A. C. Sanders 1990-10-6 10199 Orange South Coast, Newport Back Bay, SW side at North Star County Beach, SW end of the bay, c. 2 km inland from Hwy 1/ Pacific Coast Hwy 3 Comment
  RSA0069229  Baccharis sarothroides Fred M. Roberts, Sandra Leatherman 2008-9-3 7091 Orange Santa Ana River Canyon: Yorba Linda: intersection of La Palma Ave. and Mercado del Rio Street. 135 Comment
  UCR194992  Baccharis sarothroides A. C. Sanders, Fred M. Roberts 2008-8-7 35997 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Windy Ridge Rd. near wash crossing, 1.0 mi. SSE of Walnut Canyon Reservoir 232 Comment
  RSA724033  Bacopa monnieri R. E. Riefner 2004-9-3 4 -419 Orange City of Yorba Linda, N floodplain of Santa Ana River near Yorba Linda Regional Park. 96 Comment
  SEINET5585508  Bahiopsis laciniata R. E. Riefner Jr. 2013-1 13 -56 Orange Anaheim Hills, vicinity Hidden Canyon Rd. at Avenue De Santiago. 305 Comment
  CLARK-A1528-966  Bassia hyssopifolia Patricia A. Andrews 1975-6-26 5909 Orange Capistrano Bay Beach 9 Comment
  SBBG47294  Bassia hyssopifolia R. N. Philbrick 1973-8-31 Orange marsh just E of University of California, Irvine Comment
  UCD97659  Bassia hyssopifolia Ira 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
  RSA5864  Bassia hyssopifolia C. B. Wolf 1932-9-13 4022 Orange Bryant Ranch. 3/10 miles W of Los Alamitos Blvd.700 ft. south of Bryant Ave., (800 ft. east & 700 ft. south of NW corner of SW 1/4 sec. 30 T4S R11W) 7 Comment
  POM122280  Batis maritima Marcus E. Jones 1924-8-26 s.n. Orange Balboa Comment
  POM201706  Batis maritima L. M. Booth 1932-6-9 1184 Orange Newport Bay. Comment
  RSA439754  Batis maritima F. R. Fosberg 1931-8-19 S 5678 Orange Newport Bay. 1 Comment
  RSA609049  Batis maritima L. C. Wheeler 1932-6-25 858 Orange Newport Bay. 1 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
  UCR67007  Batis maritima A. C. Sanders 1990-10-6 10195 Orange Newport Bay, North Star County Beach Area on the SW end of the Bay, c. 2 km inland of Hwy 1. 3 Comment
  SBBG45055  Bebbia juncea C. B. Wolf 1931-7-25 2295 Orange Santa Ana, Santa Ana Cyn 121 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
  UCD169738  Berberis aquifolium var. dictyota R. F. Thorne; et al. 1977-4-27 49716 Orange Santa Ana Mountains: Bedford Truck Trail, ca. 0.8 km below junction with Main Divide Truck Trail. 1402 Comment
  RSA799942  Beta vulgaris Justin M. Wood 2011-6-28 4307 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. Just W of parking area. 25 Comment
  RSA696876  Bidens laevis J. Russell Bruff 1930-10 s.n. Orange Santa Ana River, 1st Street. Comment
  RSA488143  Bidens laevis Fred M. Roberts, Gordon Marsh 1985-10-26 2519 Orange Santa Ana River: adjacent to Huntington Beach: 0.7 km SSW Adams St bridge 4 Comment
  IRVC20225  Bidens pilosa Fred M. Roberts, K. G. Marsh 1982-10-18 834 Orange Temple Hill, east margin of Top of the World School, Laguna Beach 295 Comment
  JEPS32526  Bidens pilosa W. L. Jepson 1940-10-6 20181 Orange Horseshoe Bend, Santa Ana Canyon Santa Ana Canyon, Horseshoe Bend Comment
  CHSC2067  Bloomeria crocea S. Westerberg 1938-4-1 Orange Dana Point. Comment
  RSA749995  Bloomeria crocea A. C. Sanders, Fred M. Roberts, Amber O Neal 2008-5-9 35329 Orange Weir Canyon, 0.3 mi. west of Eastern Transportation Corridor (Hwy 241) and 1.45 mi. east of south end of Walnut Canyon Reservoir 335 Comment
  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
  RSA652084  Bloomeria crocea Shlomo Gat 1959-5-12 38 Orange Hills in Orange county. Comment
  RSA362294  Boisduvalia densiflora Fred M. Roberts 1985-6-7 1861 Orange Santa Ana Mountains: Main Divide Truck trail, 2.2km ESE Los Pinos Peak. 1005 Comment
  CAS-BOT-BC31017  Bolboschoenus maritimus Helen D. Geis 1902-3-1 s.n. Orange Peat Lands Comment
  UCSB57131  Bolboschoenus maritimus Marsh, G. 1975-7-28 Orange Huntington Beach: East Garden Grove-Wintersburg Flood Control Channel (No. C05); stream bank just N of Warner St. bridge crossing Comment
  UCR102034  Bolboschoenus maritimus subsp. paludosus B. G. Pitzer 1997-4-15 3137 Orange San Joaquin Hills, Crystal Cove State Park, north of the N end of the City of Laguna Beach. Along Moro Canyon Trail, from beginning to a point c. 1.75 mi. up the canyon. 49 Comment
  UCR158463  Bolboschoenus maritimus subsp. paludosus Adrian Wolf 1998-5-27 322 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
  UCR85532  Bolboschoenus maritimus subsp. paludosus Scott D. White 1993-4-28 1289 Orange Pacific slope, Tustin Marine Corps Air Station, NW of Peters Canyon Channel, between Moffett Dr. & Warner Comment
  RSA639703  Bothriochloa barbinodis Scott D. White, P. DeVries 1998-12-10 7203 Orange Brea: Tonner Canyon and adjacent slope, just east of 57 Freeway crossing. 137 Comment
  UCD56816  Bothriochloa barbinodis P. B. Kennedy 1924-2-5 s.n. Orange Irvine Range. Comment
  UCR205990  Bothriochloa barbinodis Adrian Wolf 1997-5-20 009 Orange South Coast, northwest of city of Laguna Beach, 100 ft from Pine Crest Drive reservoir, upslope bank adjacent to the road 152 Comment
  UCR177426  Brassica kaber Scott D. White, Amanda Duchardt 2003-3-27 8849 Orange Peninsular Ranges/Santa Ana Mtns, Canyon bottom and W-facing slopes above Canada Gobernadora 183 Comment
  RSA0066348  Brassica nigra A. C. Sanders, Fred M. Roberts 2008-3-25 34567 Orange Peninsular Range; Santa Ana Mtns.: Saddle on ridge near head of Weir Canyon, 5.3 miles ENE of Villa Park, 3.1 mi. N of (Santiago Reservoir) Irvine Lake. 405 Comment
  SD143983  Brassica nigra Scott D. White 1993-3-5 1118 Orange Marine Corps Air Station: SE of Red Hill Ave and NE of Barranca. 14 Comment
  HSC6579  Brassica nigra Anonymous 1961-3-29 Orange Newport Beach above upper Newport Bay Comment
  RSA482936  Brassica rapa Freda Detmers 1933-11-1 s.n. Orange Near Fullerton. Comment
  UCD114851  Brassica rapa Ira L. Wiggins 1965-12-5 20365 Orange Orange grove 2 mi. E. of Atwood on N. side of Orangethorpe Ave. Comment
  UCSB18585  Brassica rapa Reed, Robert 1964-3-26 Orange 150 feet N of corner of Orangewood and Euclid Ave., Anaheim 60 Comment
  IRVC1014  Brassica rapa subsp. sylvestris 1965-5-25 Orange Corona del Mar, Begonia Ave. D.C. Newport Beach Comment
  SEINET7907478  Brassicaceae G. A. Wojciechowski 1967-1 Orange San Juan Capistrano beside rd 610 Comment
  RSA764022  Brickellia californica Doris Bowers 1970-10-26 1706 Orange Black Star Canyon 610 Comment
  UCR222629  Brickellia californica T. B. Salvato 2010-10-27 5102 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
  RSA587119  Brodiaea jolonensis R. E. Riefner 1994-6-15 94 -253 Orange South bluffs, San Clemente State Beach. Comment
  CAS-BOT-BC144328  Bromus Ira L. Wiggins 1966-3-5 20519 Orange About 0.5 mile west of El Torro Post Office, along Highway S-18. Comment
  RSA184176  Bromus arizonicus I. L. Wiggins 1966-4-22 20617 Orange Along Associated road between Yorba Linda Boulevard and Imperian Highway. Comment
  POM156460  Bromus carinatus Le Roy Abrams 1903-4-18 3271 Orange Capistrano Comment
  POM265763  Bromus carinatus J. C. Roos 1937-5-10 2079 Orange East of San Juan Capistrano. Comment
  RSA562762  Bromus carinatus Steve Boyd, Timothy S. Ross 1992-5-19 7417 Orange Southern Santa Ana Mountains San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo (7S06) N into Aliso Canyon. Comment
  SD241666  Bromus carinatus A. C. Sanders, Fred M. Roberts 2008-4-8 34751 Orange Peninsular Range; Santa Ana Mountains: Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Road, above Dripping Springs Loop Road (El Toro 7.5'Q) 456 Comment
  UCR38841  Bromus carinatus G. Sampson 1985-4-23 85- 369 Orange Chino Hills State Park, south of McDermott Spring in east end of Telegraph Canyon 412 Comment
  UCSB47948  Bromus carinatus Roberts, Dar 1980-5-3 Orange 2.0 km NW of jct between Hwy 74 and Main Divide Truck Trail 960 Comment
  CAS-BOT-BC148924  Bromus carinatus var. marginatus Le Roy Abrams 1901-6-1 1844 Orange Santiago Peak. Comment
  CAS-BOT-BC156209  Bromus catharticus Ira L. Wiggins 1965-9-5 20326 Orange In orange grove on north side of Chapman Avenue, near Kraemer Road. Comment
  RSA6129  Bromus catharticus C. B. Wolf 1932-6-13 3727 Orange Fullerton, Rose Drive 53 Comment
  UCD58344  Bromus catharticus Ira L. Wiggins 1965-9-26 20264 Orange Along Orangethorpe Avenue near Atwood. Comment
  SEINET14401104  Bromus catharticus Czarnecki 1966-5-20 108 Orange Near State College Blvd and Yorba Linda Blvd, Fullerton Comment
  POM7087  Bromus diandrus P. A. Munz, L. T. Street, G. Williams 1919-5-3 2644 Orange Santa Ana River Canyon. Comment
  RSA0058186  Bromus diandrus Fred M. Roberts 2014-4-21 7870 Orange South Coast: San Joaquin Hills: Upper Laguna Lake 1 (upper Laguna Lake), north basin. 113 Comment
  RSA697685  Bromus hordeaceus Anonymous s.n. Orange Dry hills. Orange Co. Park. Comment
  UCR100463  Bromus hordeaceus B. G. Pitzer 1996-4-30 2760 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  SEINET179447 Image available Bromus hordeaceus subsp. hordeaceus Lawrence M. Booth 1932-5-12 1023 Orange Newport Bay Comment
  SEINET11675550  Bromus hordeaceus subsp. molliformis J. F. Bright, Wyman, C. 1933-1 8207 Orange near Del Toro Comment
  UCR192067  Bromus madritensis A. C. Sanders, Fred M. Roberts 2008-5-6 35251 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  UCR192104  Bromus madritensis A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35306 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  HSC94253  Bromus madritensis subsp. rubens D. Atwood 1993-3-27 17691 Orange Corona Del Mar State Park along Newport Coast Drive. 0 Comment
  IRVC29091  Bromus madritensis subsp. rubens Fred M. Roberts 1989-3-17 4206 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  RSA699743  Bromus pseudolaevipes Fred M. Roberts, David E. Bramlet 2003-5-15 5876 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 1.41km SSW Gato Gate and 0.35km NNW of SDG&E substation. 122 Comment
  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
  POM363950  Bromus rubens E. A. McGregor 1966-5-15 s.n. Orange Ortega Highway, between Lake Elsinore and San Juan Capistrano. Comment
  CLARK-A1528-972  Bromus willdenowii Patricia A. Andrews 1975-6-26 5918 Orange Capistrano Bay Beach 9 Comment
  SD181648  Cakile maritima Valerie Soza, Kevin Clark, et al. 2001-4-4 1113 Orange Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal beach National Wildlife Refuge. 3 Comment
  CSUSB524  Cakile maritima R. P. Sunderman 1968-5-11 S. N. Orange Beach just south of Corona del Mar Comment
  CSUSB525  Cakile maritima C. M. Flanagan 1971-5-18 S. N. Orange Cresent Bay, Laguna Beach Comment
  SEINET11093551  Cakile maritima Unknown 1970-8-22 W- 5 Orange PLANTS OF CALIFORNIA Orange Co., California; ca. 4 miles NE of Huntington Beach on coastal strand adjacent to Bolsa Bay & Pacific Coast Hwy.; annual herb 4-6 dm. high with purplish fls.; common in Coastal Strand; growing in decomposed granite soil in sun iwth Oenothera & Baccharis. sea level Comment
  UCSB42556  Cakile maritima Romspert, Alan 1966-3-11 Orange Along U.S. Highway 101 alternate across from Huntington Beach Comment
  UC1929694  Calandrinia breweri R. E. Riefner Jr. 2008-5-20 08 -104 Orange Irvine Ranch Reserve, North Irvine Ranch, western Fremont Canyon, Windy Ridge Rd. Comment
  UCR222642  Calandrinia ciliata D. E. Bramlet 2008-4-28 4245 Orange Peninsular Range; Santa Ana Mtns. Foothills, east fork of upper Weir Canyon, 1.2 km east of the main canyon and 91 m west of the upper boundary of Gypsum Canyon 409 Comment
  RSA752034  Calandrinia maritima Fred M. Roberts 2008-4-2 6843 Orange Dana Point: Dana Point Headlands, CNLM Preserve south of NE Gate along bluff, 0.6 km W Marine Institute (Dana Point Harbor). 28 Comment
  IRVC29833  Callistemon Tom McCrainie, Mark A. Elvin 2006-9-23 7 Orange San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; SW edge, along San Diego Creek, N of University Drive, E Hwy 73. Southern Coastal 2 Comment
  CDA9410  Callistemon citrinus D. G. Kelch 2006-12-9 6 .571 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  RSA713907  Callistemon citrinus R. E. Riefner Jr. 2005-11-23 5 -773 Orange City of Newport Beach, Upper Newport Bay, E of Jamboree Rd and S of Bayview Way at Bonita Creek channel. 6 Comment
  SEINET6654150  Callistemon viminalis R. E. Riefner Jr. 2006-11-14 06 -674 Orange City of Irvine, San Diego Creek, vicinity of Campus Ave at University Dr.; 0 5 Comment
  UCR199267  Callistemon viminalis R. E. Riefner Jr. 2007-4-1 07- 163 Orange South Coast, city of Laguna Niguel, Oso Creek, c. 1.5 mi north from Paseo de Colinas Street on Camino Capistrano Street 88 Comment
  RSA665954  Callitriche marginata Fred M. Roberts, Michelle Lee, Kristen Szabo 2001-4-13 5425 Orange Rancho Mission Viejo: South of San Juan Creek, 0.6km WNW Median Rancho Survey Marker. PCR Vernal Pool 2. 183 Comment
  RSA799947  Callitriche marginata Justin M. Wood 2011-4-12 3660 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  POM13942  Calochortus catalinae William M. Pierce 1922-4-11 s.n. Orange Santa Ana Mountians, Santa Ana Canyon. Comment
  RSA734347  Calochortus catalinae A. C. Sanders, Linda Farley, Fred M. Roberts, David E. Bramlet 2008-4-1 34639 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 396 Comment
  RSA735172  Calochortus catalinae A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35289 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  RSA751326  Calochortus catalinae A. C. Sanders, Fred M. Roberts 2008-5-6 35260 Orange Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  RSA753423  Calochortus catalinae D. E. Bramlet 2008-5-20 4279 Orange N Loma Ridge, 30m east of the access road, 762m west of Hwy 241 & 1.13km south of Santiago Cyn Road. 344 Comment
  UCR192228  Calochortus catalinae A. C. Sanders, Fred M. Roberts 2008-5-6 35260 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  UCR203898  Calochortus catalinae R. E. Riefner Jr. 2008-4-15 08- 71 Orange Irvine Ranch Reserve, north Irvine Ranch, Fremont Canyon Conservation Easement, west Fremont Canyon, lower Coalmine SCE Road 301 Comment
  RSA0108729  Calochortus catalinae J. T. Howell 1928-3-17 863 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  UC337918  Calochortus plummerae unknown 1891-8-15 Orange Santa Ana Canyon Comment
Read comments
Feb 19 2014
  UC1178589  Calochortus splendens Peter Kamb 1948-6-19 1107 Orange se slope Santiago Peak (Orange-Riverside Counties); Santa Ana Mts. 1219 Comment
  CAS-BOT-BC492699  Calochortus splendens P. C. Everett 1935-5-19 6874 Orange Santa Ana Mts., Baker Canyon, West Ladd Trunk Trail 304 Comment
  RSA132250  Calochortus splendens Gale Sphon 1959-5-2 325 Orange Between Upper and Lower San Juan Camps, Cleveland National Forest. Comment
  RSA0042761  Calochortus weedii J. Vlahos 1934-6-2 s.n. Orange Hills around Orange Co. Park. Comment
  NY1104587  Calochortus weedii var. intermedius J. T. Howell 1927-6-22 2572 Orange On N side of Santa Ana Canon [Santa Ana Canyon] 244 Comment
  RSA588976  Calochortus weedii var. intermedius D. E. Bramlet 1994-6-23 2392 Orange San Joaquin Hills. On ridgeline between Camarillo and Shady Canyons. The site is located 1.5 km west of Laguna Cyn. and 183 m SE of the Shady-Camarillo Cyn. Road Junction. 244 Comment
  RSA699753  Calochortus weedii var. intermedius Fred M. Roberts, David E. Bramlet 2003-6-6 5884 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.7km SW int. Cristianitos and TRW Rds. and 0.23km W of SDG&E substation. 119 Comment
  RSA773557  Calochortus weedii var. intermedius Fred M. Roberts 2008-6-3 7027 Orange Lomas de Santiago: Loma Ridge, East Fork Rattlesnake Canyon, ca. 2.5 km NE of Rattlesnake Reservoir spillway and 2.6 km ENE Bee Peak 258 Comment
  RSA788916  Calochortus weedii var. intermedius Fred M. Roberts 1999-6-10 5238 Orange Lomas de Santiago: Loma Ridge, Agua Chinon Cyn., 1.3 km S Bolero Spring and 2.2 km W Bolero Lookout. 285 Comment
  SD134560  Calochortus weedii var. intermedius Craig Reiser 1992-6-12 Orange Laguna Niguel, west-facing slope 100 yards north of northeast corner of intersection of Crown Valley Parkway and Pacific Island Drive. Openings in chaparral. (IPB 3/08) Comment
  SEINET7067528  Calochortus weedii var. intermedius A. G. Vestal 1947-6-12 s.n. Orange Between Aliso Creek and Trabuco Canyon on Little Oak Canyon Road. Coordinate datum: NAD27. UTM Zone 11, 444335mE, 3727266mN. Comment
  UCR132987  Calochortus weedii var. intermedius Adrian Wolf 2000-6-20 463 Orange Santa Ana Mtns., North Ranch Policy Plan Area, 0.62 km NNW of mouth of Black Star Canyon 305 Comment
  RSA369019  Calochortus weedii var. weedii M. B. Dunkle 1934-6-18 3979 Orange San Juan Canyon; Southern Coastal 305 Comment
  RSA16426  Calycadenia tenella Percy C. Everett 1935-5-19 6878 Orange Santa Ana Mts, Baker Canyon, W Ladd Truck Trail 305 Comment
  RSA649679  Calycadenia tenella R. E. Riefner 2000-5-6 20 -444 Orange NCCP North Ranch Policy Plan Area: NE property; along powerline on National Forest boundary. 582 Comment
  RSA750000  Calycadenia tenella A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35323 Orange Weir Canyon, 0.3 mi. west of Eastern Transportation Corridor (Hwy 241) and 1.45 mi. east of south end of Walnut Canyon Reservoir. 335 Comment
  UCR113456  Calycadenia tenella R. E. Riefner Jr. 2000-5-6 20- 444 Orange Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along powerline on National Forest boundary 582 Comment
  RSA255489  Calycadenia tenella Gerald D. Carr 1971-7-14 585 Orange 2.5 mi NE of San Juan Capistrano on Hwy 74 69 Comment
  RSA606369  Calycadenia tenella Jon E. Keeley 1994-6-1 25365 Orange First year burn, Starr Ranch 390 Comment
  SD255709  Calystegia macrostegia D. E. Bramlet 2008-3-26 4121 Orange Santa Ana Mountains; Bee Canyon, Bowerman landfill site; 202 m south of the Bee Canyon access road and 151 m west of the active landfill entrance. 295 Comment
  UCR131876  Calystegia macrostegia J. Mallory, V. McCoy 1995-7-3 6454- 129 Orange Santa Ana Mountains: Blind Canyon, c. 0.5 mi. NE of confluence w/ Santiago Canyon Wash; north of Irvine Lake. 300 Comment
  UCR220027  Calystegia macrostegia Rebecca T. Vo 2010-6-5 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  UCR230223  Calystegia macrostegia Dick Newell, Ed Hill 2011-3-29 098 Orange Peninsular Range; Santa Ana Mtns., east of Outdoor Education Center on MWD service road, 1.65 mi. NW (311 deg. ) of Irvine Lake dam 237 Comment
  CHSC19523  Calystegia macrostegia T. Casale 1974-4-11 2 Orange On road shoulder, ca 0.7 mi ne of the Mission San Juan Capistrano on Hwy 74. 36 Comment
  SD225753  Calystegia macrostegia subsp. arida R. K. Brummitt 1998-5-23 19994 Orange 17 km NE of San Juan Capistrano on Rte. 74 199 Comment
  UC1794974  Calystegia macrostegia subsp. arida R. K. Brummitt 1998-5-23 19994 Orange 17 km NE of San Juan Capistrano on Rte. 74 200 Comment
  IRVC21683  Calystegia macrostegia subsp. cyclostegia Fred M. Roberts 1975-4-7 75 -40 Orange 0.7km ESE Dana Hills High School, Dana Point 90 Comment
  UCR281536  Calystegia macrostegia subsp. cyclostegia Mitch Provance, Jeremiah George 2017-3-20 317- 124 Orange West Coyote Hills, Fullerton, vicinity of Utility Access Roads E of Gilbert Street and N of Castlewood Dr., on land previously occupied by oil fields. 137 Comment
  IRVC981  Calystegia macrostegia subsp. intermedia J. Schram 1965-3-23 Orange Corona del Mar, Corona Highlands. Newport Beach Comment
  IRVC993  Calystegia soldanella D. W. Bryant 1965-3-27 Orange Pacific Coast Hwy and Beach Blvd. Huntington Beach Comment
  UCSB21666  Calystegia soldanella Keefe, Joseph 1967-3-26 Orange California Highway 1, Bolsa Bay, 0.4 mile south of Warner Avenue, Sunset Beach 1 Comment
  RSA0039800  Camissonia bistorta Fred M. Roberts, D. E. Bramlet 2003-4-10 5647 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, ridge between Cristianitos Cyn. and Segunda Deshecha Canada, 1.54km W Gato Gate and 1.59km NW Edison substation. 262 Comment
  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
  HSC94212  Camissonia cheiranthifolia subsp. suffruticosa D. Atwood 1993-3-28 17712 Orange Bolsa Chica Ecological Reserve, California Dept. of Fish and Game 0 Comment
  POM201888  Camissonia cheiranthifolia subsp. suffruticosa L. M. Booth 1932-5-25 1114 Orange Balboa Island, Newport Bay. Comment
  RSA737479  Camissonia cheiranthifolia subsp. suffruticosa Fred M. Roberts 2008-3-12 6737 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  UCR203990  Camissonia cheiranthifolia subsp. suffruticosa Fred M. Roberts 2008-3-12 6737 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
  RSA588658  Camissonia hirtella Fred M. Roberts, Carol A. Roberts 1990-5-23 4649 Orange Santa Ana Mtns.: West Fork, Upper Long Canyon, near Main Divide Truck Trail, 4.5 km SE Los Pinos Peak. 756 Comment
  RSA507  Camissonia lewisii J. T. Howell 1928-4-7 902 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  UCR175054  Camissonia robusta Vanessa Lee 2005-4-24 s.n. Orange South Coast, Crystal Cove, Laguna Beach, above Pacific Coast Highway 61 Comment
  UCSB48095  Camissoniopsis bistorta Roberts, Fred 1982-4-18 Orange Santa Ana Mtns: Hot Springs Canyon, 1.8 km SW Falcon Group Camp; 1.9km S Los Pinos Peak 928 Comment
Read comments
Dec 2 2014
  SBBG40397  Camissoniopsis bistorta J. Ingram 1960-3-14 244 Orange La Palma Ave, ca. 2 blocks E of Knotts Berry Farm, Buena Park Comment
  CAS-BOT-BC160448  Camissoniopsis cheiranthifolia subsp. suffruticosa David D. Keck 1933-9-21 2523 Orange Sunset Beach Comment
  CAS-BOT-BC160452  Camissoniopsis cheiranthifolia subsp. suffruticosa C. W. Tilforth 1975-9-3 1039 Orange At north-east shoreline of Upper Bay, Newport Beach Comment
  UC635403  Camissoniopsis intermedia H. L. Mason 1926-4-25 2926 Orange 5 mi s Laguna Comment
  LA204284  Cardamine californica C. B. Wolf; 1931-3-6 1851 Orange Trabuco Camp Ground, Trabuco Canyon, west slope of the Santa Ana Mts Comment
  UCR262008  Cardamine californica Dick Newell, Don Millar 2015-2-10 387 Orange South Coast, Laguna Canyon, on Willow Canyon Trail, 0.14 mi. due west of Laguna Canyon Rd. 80 Comment
  POM202599  Cardaria draba L. M. Booth 1932-5-15 1197 Orange E of Hungtington Beach. Comment
  UC537121  Cardaria draba Lawrence M. Booth 1932-5-15 1197 Orange e of Huntington Beach Comment
  POM187375  Cardaria draba E. R. Johnson 1928-02 s.n. Orange Talbert, Orange County Comment
  RSA0015954  Cardionema ramosissimum Fred M. Roberts 2012-5-10 7568 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
  UCR215305  Cardionema ramosissimum Fred M. Roberts, Eliza L. Maher 2008-3-26 6794 Orange South Coast, Dana Point; Dana Point Headlands, Center for Natural Lands Mgmt. Preserve, 0.8 km west of Marine Institute, Dana Point Harbor 60 Comment
  CSUSB712  Cardionema ramosissimum Barbara T. Gittins, Oscar F. Clarke 1966-3-19 Orange Newport Beach. Coastal foothills, Irvine Ranch, east of University of California at Irvine. Comment
  UCSB48219  Carduus pycnocephalus Roberts, Fred 1981-6-20 Orange Dana Point; 0.7 km. NNE Dana Hills High School 67 Comment
  RSA562751  Carduus pycnocephalus Steve Boyd, Timothy S. Ross 1992-5-19 7427 Orange Southern Santa Ana Mountains San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo (7S06) N into Aliso Canyon,. 366 Comment
  UCR13444  Carex barbarae J. M. Pearia 1973-5-13 730513 4 Orange Peninsular Range; Santa Ana Mtns., c. 14 mi east of San Juan Capistrano on Hwy 74 along the bank of San Juan Creek 244 Comment
  RSA542341  Carex praegracilis Fred M. Roberts, Dar A. Roberts 1989-3-22 4215 Orange Aliso-Wood regional Park: Lower Wood Canyon, 3.6 km SSE Moulton Peak. 34 Comment
  UC212128  Carex praegracilis I. M. Johnston 1918-5-5 1890 Orange El Toro 76 Comment
  UC971745  Carex praegracilis L. M. Booth 1932-7-1 1234 Orange Anaheim Creek Comment
  UCR242118  Carex praegracilis D. E. Bramlet 1983-5-14 1377 Orange Peninsular Range, Santa Ana Mountains, Chiquito Basin 884 Comment
  CAS-BOT-BC118486  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Peat Lands Comment
  CAS-BOT-BC118494  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Santa Ana, Peat lands Comment
  RSA610230  Carex spissa Fred M. Roberts 1997-4-19 5011 Orange San Juan Canyon along San Juan Creek at CA. Rte. 74 bridge just east of San Juan Hot Springs, 0.8km SSE Juan Rancho Surbey Mark 240 Comment
  RSA0031762  Carex spissa Robert F. Thorne 1977-11-21 50812 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  SEINET7896473  Carpobrotus chilensis P. S. Rattle 1939-3 Orange Balboa Island Comment
  UCR196320  Carpobrotus chilensis Mark A. Elvin, Dean Kelch 2006-12-9 5292 Orange South Coast, Newport Backbay, Big Canyon, lower end 3 Comment
  SEINET10447228  Carpobrotus chilensis Charlene A. Bennett 1976-7-22 Bennett 444 Orange Cultivated and native plants collected around the San Clemente Beach area. 3 Comment
  RSA743459  Carpobrotus edulis Fred M. Roberts 2008-7-10 7067 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
  UCR193317  Carpobrotus edulis A. C. Sanders, Fred M. Roberts 2008-6-17 35470 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  UCR42442  Carpobrotus edulis A. C. Sanders 1986-5-31 6531 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-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
  JEPS89156  Castilleja affinis Rimo Bacigalupi, and L. Heckard 1962-3-25 8383 Orange 3.5 mi e El Modeno (near Handy Creek, on road to Irvine County Park) Comment
  POM202720  Castilleja affinis L. M. Booth 1932-5-19 1074 Orange Newport Bay. Comment
  POM6405  Castilleja affinis Philip A. Munz, Street, Williams 1919-5-3 2616 Orange Santa Ana River Canyon. Comment
  RSA734649  Castilleja affinis A. C. Sanders, Fred M. Roberts 2008-3-25 34572 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
  RSA773519  Castilleja affinis Fred M. Roberts 1999-5-3 5210 Orange Lomas de Santiago: Loma Ridge, Central Limestone Canyon, west slope, 2.3 km NW Bolero Lookout and 0.5 km NE Bolero Spring 446 Comment
  UCR191447  Castilleja affinis A. C. Sanders, Fred M. Roberts 2008-4-8 34759 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd. 457 Comment
  RSA160549  Castilleja affinis J. D. Olmsted 1959-4-30 513 Orange North of Hidden Ranch in Black Star Can. ; 100 yards NW of Rattlesnake Rock; 5 mi. east of Irvine Lake. 716 Comment
  RSA425875  Castilleja affinis T. W. Minthorn 1928-4-1 s.n. Orange Balboa Palisades. Comment
  RSA789602  Castilleja affinis subsp. affinis Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49649 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] Comment
  RSA543970  Castilleja applegatei subsp. martinii Steve D. Boyd, Orlando Mistretta 1991-5-9 3201 Orange Crest of range at Oak Flat, SE of Sierra Peak, just West of Riverside County Line. 793 Comment
  UC511102  Castilleja exserta Lyman Benson 1932-3-26 3191 Orange Dana Point 60 Comment
  UCR190964  Castilleja exserta A. C. Sanders, Fred M. Roberts 2008-4-22 35039 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
  UC1607987  Castilleja exserta subsp. exserta Donald G. Nelson 1935-3-23 185 Orange hills n Fullerton Comment
  HSC20518  Castilleja foliolosa S. M. Clapp 1966-4-10 31 Orange 4 mi. into Black Star Canyon 183 Comment
  RSA704075  Castilleja foliolosa D. E. Bramlet, Fred M. Roberts 2003-5-15 3437 Orange Donna O'Neill Reserve. SE corner of the reserve, 244m west of Cristianitos Rd., and 823m north of Pico. 122 Comment
  RSA663153  Castilleja minor subsp. spiralis R. E. Riefner 2000-3-26 30 -154 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  RSA731797  Castilleja minor subsp. spiralis Fred M. Roberts, Sandy Leatherman 2007-11-9 6640 Orange Santa Ana Mtns.: San Juan Canyon along San Juan Creek, 0.2km E community of San Juan Hot Springs. 222 Comment
  RSA642524  Caulanthus heterophyllus D. E. Bramlet 1994-4-30 2376 Orange San Joaquin Hills. On ridgeline above Camarillo Canyon, beside the Camarillo Spur (E side) road. 1.5 km west of Laguna Cyn. and 198 m NE of the Shady-Camarillo Cyn. Road junction. 65 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
  RSA0119683  Caulanthus lasiophyllus Fred M. Roberts 2015-3-10 7922 Orange San Joaquin Hills: Niguel Hill, on ridge above Aliso Canyon ear end of Ceanothus Drive (Hangover House property), 0.4 km WNW summit Aliso Peak. 122 Comment
  RSA21485  Ceanothus crassifolius E. R. Johnson 1936-3-16 8313 Orange Rancho Santa Ana, Santa Ana Canyon. So. of Ranch Buildings 122 Comment
  RSA304750  Ceanothus crassifolius James R. Shevock 1971-2-25 197 Orange Mojeska Cyn, Santa Ana Mts. 305 Comment
  RSA542417  Ceanothus crassifolius Fred M. Roberts 1988-3-15 3854 Orange Rancho Mission Viejo: Verdugo Canyon, 0.8 km SE Lucas Survey Mark. 247 Comment
  RSA786781  Ceanothus crassifolius Doris Bowers 1971-4-19 1687 Orange Black Star Canyon Indian Site 762 Comment
  SBBG4144  Ceanothus crassifolius var. crassifolius M. Van Rensselaer 1941-5-30 1673 Orange Ortega Hwy (St Hwy 74) Comment
  RSA733958  Ceanothus integerrimus Keith E. Hoffmaster 1936-5-3 716 Orange Santa Ana Mts (Santiago Peak) Comment
  UCR131677  Ceanothus integerrimus C. B. Wolf 1941-8-15 11155 Orange Santa Ana Mtns., Santiago Peak, north side 0.5 mi. from summit [near Riverside county line] 1677 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
  RSA21484  Ceanothus megacarpus E. R. Johnson 1936-3-16 8312 Orange Rancho Santa Ana, Santa Ana Canyon. So. of Ranch Buildings 122 Comment
  RSA735030  Ceanothus megacarpus Scott D. White, Justin M. Wood 2008-4-10 11851 Orange Chino Hills: Powerline access road just N of CHSP boundary and just W of Orange/SB co. line. Approx. 1 mi. NW of Gilman Peak. 366 Comment
  UCR159779  Ceanothus megacarpus subsp. megacarpus Peter A. Bowler 2003-4-26 s.n. Orange Southern Coastal, UC San Joaquin Freshwater Marsh Reserve; bluffs along NW edge of marsh Comment
  CAS-BOT-BC50507  Ceanothus megacarpus var. megacarpus John Thomas Howell 1927-6-26 2609 Orange Claymine Canyon, n. Santa Ana Mts. 701 Comment
  RSA542422  Ceanothus megacarpus var. megacarpus Fred M. Roberts 1988-5-12 3963 Orange Anaheim Hills: Upper Deer Canyon, 7.7 km W Sierra Peak. 268 Comment
Read comments
Aug 23 2013
  SBBG45051  Ceanothus megacarpus var. megacarpus J. T. Howell 1927-6-26 228 Orange Claymine Cyn near Sierra Pk 701 Comment
  UC1070883  Ceanothus megacarpus var. megacarpus A. Lewis 1934-3-1 366 Orange 2.5 mi w Sierra Peak; Corona quad. 609 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
  RSA398910  Ceanothus oliganthus var. oliganthus Christopher Davidson 1977-5-18 5599 Orange Santa Ana Mts. Cleveland Nat. Forest. Pleasants Peak (on Orange-Riverside Co. line). 1220 Comment
  UC1071149  Ceanothus oliganthus var. oliganthus A. Lewis May 1934 413 Orange Trabucu Canyon Elsinore quad., Cleveland National Forest 1371 Comment
  RSA398926  Ceanothus oliganthus var. sorediatus Albert J. Perkins 1918-5-25 s.n. Orange Santiago Peak. Comment
  UC1071228  Ceanothus papillosus R. St. John 1931-2-24 187 Orange Los Pinos Peak Elsinore Quad. Comment
  POM19055  Ceanothus papillosus var. roweanus F. W. Peirson 1923-5-6 3492 Orange Trail to Santiago Peak from Holy Jim Canyon. 991 Comment
  SD193348  Ceanothus papillosus var. roweanus A. C. Sanders 2005-9-2 31610 Orange Upper Holy Jim Canyon , along the trail in the switchbacks. 970 Comment
  SBBG128688  Ceanothus papillosus var. roweanus R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49697 Orange Sierra Peak; Santa Ana Mtns 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
  RSA735028  Ceanothus spinosus Scott D. White, Justin M. Wood 2008-4-10 11848 Orange Chino Hills: Powerline access road just N of CHSP boundary and just W of Orange/SB co. line. Approx. 1 mi. NW of Gilman Peak. 366 Comment
  RSA80676  Ceanothus spinosus P. A. Munz, E. K. Balls 1952-8-19 17928 Orange Along Ortega Hwy, west slope of Santa Ana Mts. 305 Comment
Read comments
Nov 1 2013
  UC1071372  Ceanothus spinosus A. Lewis Apr 1934 383 Orange Santiago Canyon Cleveland National Forest, Corona Quad. Comment
  UCR103213  Ceanothus spinosus Scott D. White 1997-2-19 4691 Orange Santa Ana Mtns, above Modjeska Canyon; proposed water tank site 488 Comment
  UC1071430  Ceanothus tomentosus A. Lewis Mar 1934 367 Orange 2 1/2 mi sw Sierra Peak; Cleveland National Forest, Corona Quad. 548 Comment
  SD254510  Cenchrus clandestinus D. E. Bramlet 2009-11-20 4416 Orange South Coast: San Diego Creek between Irvine and Newport Back Bay. 3 Comment
  UC536893  Centaurea melitensis Lawrence M. Booth 1932-5-26 1117 Orange Newport Bay Comment
  RSA80651  Centaurium venustum P. A. Munz, E. K. Balls 1952-8-19 17927 Orange El Cariso Camp Ground W of Ortega summit, Santa Ana Mts. Comment
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Nov 1 2013
  CAS-BOT-BC288840  Centromadia parryi subsp. australis D. Bramlet 1990-11-3 2064 Orange On the W side of Upper Newport Back Bay, some 50 m NW of the Delhi channel, approx 100 m SE of the end of University Drive and is located just above an alkaline marsh area 23 Comment
  CAS-BOT-BC288850  Centromadia parryi subsp. australis Carl B. Wolf 1932-6-28 3781 Orange Bryant Ranch, about middle of W boundary of 40-acre Valencia orange grove at Bryant Ave and Hansen Rd Comment
  UCD20136  Centromadia parryi subsp. australis Donald W. Kyhos 1962-9-23 62- 225 Orange Along Pacific Coast Highway and Balboa Drive, about 1 mile south of Los Angeles- Orange County line. Comment
  UCR256927  Centromadia parryi subsp. australis Jeremiah George 2011-7-8 s.n. Orange Bolsa Chica Mesa, south central edge 8 Comment
  RSA680733  Cerastium glomeratum Scott D. White 2003-3-21 8811 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  UCR111727  Ceratonia siliqua H. Camp 2000-1-18 s.n. Orange Peninsular Range; Santa Ana Mtns., Caspers Regional Park, 12 mi. east of I-5 in San Juan Capistrano, along Ortega Hwy (Hwy 74), San Juan Creek close to Forest Service boundary and the hot springs 213 Comment
  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
  SBBG2894  Cercocarpus betuloides var. betuloides H. and M. Dearing 1937-3-12 Orange Santa Ana Cyn Comment
  RSA688974  Cercocarpus minutiflorus Fred M. Roberts, David E. Bramlet 2003-4-10 5646 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
  RSA587870  Chaenactis artemisiifolia Fred M. Roberts 1990-5-16 4630 Orange Santa Ana Mtns: Small canyon along SE side of Irvine Mesa, 3.5 km N Bolero Lookout 396 Comment
  UCR92597  Chaenactis glabriuscula F. M. Reed 1926-4-14 5290 Orange South Coast, Arch Beach, near South Laguna 15 Comment
  CAS-BOT-BC283936  Chaenactis glabriuscula var. glabriuscula John Thomas Howell 1927-6-2 2411 Orange Southern Puente Hills in the Santa Ana Canon [Santa Ana Canyon] 152 Comment
  RSA542427  Chaenactis glabriuscula var. glabriuscula Fred M. Roberts 1988-4-11 3901 Orange Lomas De Santiago; Loma Ridge, Upper Limestone Canyon, c.a. 3.2 km NNW Bolero Lookout Comment
  RSA749520  Chaenactis glabriuscula var. glabriuscula Fred M. Roberts, David E. Bramlet, Megan Lulow 2008-4-4 6845 Orange Lomas de Santiago: Loma Ridge, along East Lomas Ridge Rd., 0.7 km E Bee Peak, Irvine Ranch Conservancy. 509 Comment
  POM294107  Chaenactis glabriuscula var. megacephala Lyman Benson 1946-4-27 12053 Orange Corona Del Mar; Drainage area: Pacific Ocean. 15 Comment
  HSC25233  Chamaesyce albomarginata R. W. Spjut 1972-2-22 2231 Orange Santa Ana Mtns., Cleveland National Forest, along Hwy. 74 305 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
  RSA542538  Chamaesyce polycarpa var. polycarpa Fred M. Roberts 1988-5-13 3968 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Canyon near spring, 2.3 km NW Bolero Lookout. 439 Comment
  IRVC846  Chamomilla suaveolens C. Weir 1965-4-17 Orange Newport Beach; Balboa Island. Southern Coastal Comment
  RSA33593  Cheilanthes clevelandii Norman C. Cooper 1944-6-4 1339 Orange San Juan Canyon, lower camp ground. 457 Comment
  RSA797474  Cheilanthes newberryi R. F. Thorne 1977-11-21 49987 Orange Santa Ana Mountains: tributary canyon to San Juan Canyon about 2 miles above San Juan Fire Station Comment
  UCSC001079  Cheilanthes newberryi Peter Kamb 1948-6-19 1092 Orange Cliff in canyon bottom - Santa Ana Mts., Holy Jim Canyon 610 Comment
  CAS-BOT-BC426293  Chenopodium album Ira L. Wiggins 1966-5-25 20664 Orange Parkway along south side of Nutwood Lane, margin of CSCF campus, Fullerton Comment
  RSA750067  Chenopodium album A. C. Sanders, Fred M. Roberts 2008-9-18 36065 Orange Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 320 Comment
  POM6868  Chenopodium ambrosioides P. A. Munz 1919-2-15 2281 Orange Montebello, along Rio Hondo. Comment
  RSA5964  Chenopodium ambrosioides C. B. Wolf 1932-9-13 4036 Orange Bryant Ranch, No. boundary between San Gabriel River Flood Control Dike & Well in SE 1/4 sect. 25., 1300 ft W of n.E. corner of S.E. 1/4 Sect. 25. T4S R12W. 6 Comment
  UCR281518  Chenopodium berlandieri Mitch Provance 2017-6-9 617- 95 Orange Coyote Hills, North Fullerton, East side of Gilbert St., 0.5 miles ENE of intersection with Castlewood Dr. 124 Comment
  POM122892  Chenopodium berlandieri var. sinuatum Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA725467  Chenopodium berlandieri var. sinuatum Fred M. Roberts, Megan Lulow 2007-7-30 6551 Orange Fremont Canyon, 1.3 km NE Irvine Lake spillway, North Irvine Ranch Policy Area. 253 Comment
  SD251215  Chenopodium berlandieri var. sinuatum R. F. Thorne, C. W. Tilforth and E. W. Lathrop 1977-4-27 49647 Orange Northern Santa Ana Mountains: Coal Canyon, northwest of Sierra Peak. Comment
  IRVC22549  Chenopodium californicum Fred M. Roberts 1985-5-1 1705 Orange Aliso Canyon, 2.1km NNE Aliso Peak, Aliso Viejo 67 Comment
  RSA262  Chenopodium californicum J. T. Howell 1928-2-25 840 Orange Near Bee Canyon, Rancho Santa Ana. 152 Comment
  RSA747623  Chenopodium californicum Fred M. Roberts 2008-4-16 6909 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8km W Marine Institute, Dana Point Harbor. 45 Comment
  RSA734918  Chenopodium multifidum A. C. Sanders, Fred M. Roberts 2008-6-17 35476 Orange Peninsular Range; Santa Ana Mtns: Lomas de Santiago, Augustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  UCR192988  Chenopodium multifidum A. C. Sanders, Fred M. Roberts 2008-6-17 35476 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  CDA20835  Chenopodium murale P. Akers 2006-3-25 PA 9 -06 Orange Peninsular Ranges; Yorba Linda. Santa Ana River S of La Palma Dr, 0.6-0.9 mi E of Yorba Linda Dr. 121 Comment
  CHSC35781  Chenopodium murale James Henrickson 1972-10-21 8057 Orange Eastern Anaheim, 2 blocks E. of Imperial Hwy. along La Palma Ave., just N. of Santa Ana River. 60 Comment
  RSA749362  Chenopodium murale Fred M. Roberts 2008-4-15 6901 Orange Lomas de Santiago: Loma Ridge, Lower Hicks Cyn., east ridge, Conservation Trail, 1.6 km ESE Rattlesnake Reservoir dam and 2.7 km WSW Bee Peak, Irvine Ranch Conservancy. 172 Comment
  SD152882  Chenopodium murale Steve Boyd, Tim Ross 1992-5-19 7429 Orange Southern Santa Ana Mountains, western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo. 365 Comment
  UCR154290  Chenopodium murale Mark A. Elvin 2004-5-2 3403 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  UCR237824  Chenopodium murale Mark A. Elvin 2003-2-2 2281 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  RSA562821  Chorizanthe fimbriata Steve Boyd, Tim S. Ross 1992-5-20 7474 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
  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
  CAS-BOT-BC255254  Chorizanthe staticoides Agnes M. Bowman 1899-6-1 s.n. Orange Santiago Cr. Comment
  CLARK-A1528-3607  Chorizanthe staticoides John C. Roos 1937-5-21 1804 Orange Lemon Heights Comment
  POM293154  Chorizanthe staticoides Lyman Benson 1946-5-13 12094 Orange Corona del Mar, Pacfic Ocean drainage area 15 Comment
  RSA584709  Chorizanthe staticoides Fred M. Roberts, Scott Wade 1989-6-21 4390 Orange San Joaquin Hills: Pelican Hill, c.a. 0.4km ESE summit. 194 Comment
  RSA588851  Chorizanthe staticoides Fred M. Roberts, Kathy Keane 1989-6-28 4392 Orange Laguna Niguel: Just beyond end of Le Conte Rd along ridge, 0.6 km SW summit of Niguel Hill. 195 Comment
  RSA698368  Chorizanthe staticoides Unspecified 1933-5-27 s.n. Orange San Joaquin Hills. Comment
  SD134404  Chorizanthe staticoides Craig Reiser 1992-6-11 Orange Laguna Niguel, ridge NE of intersection of Crown Valley Parkway and Pacific Island Drive Comment
  UC536917  Chorizanthe staticoides Lawrence M. Booth 1932-5-12 1031 Orange Newport Bay Comment
  RSA0051264  Chorizanthe staticoides Keith E. Hoffmaster 1935-3-17 550 Orange Near El Toro (Trabuco rd). Comment
  IRVC17045  Chrysanthemum coronarium J. Schram 1965-4-14 Orange Calif. 1. Laguna Beach Comment
  IRVC23283  Chrysanthemum coronarium Karlin G. Marsh 1987-4-24 Orange east side of Hwy 74 along Carrillo Rd., near park boundary; roadside. Casper's Regional Park Comment
  UCR220970  Chrysanthemum coronarium Dick Newell, Don Millar 2010-4-13 19 Orange Peninsular Range; Santa Ana Mtns. Foothills, Portola Parkway at tollroad 241 244 Comment
  UC1598731  Cicuta maculata var. bolanderi Lawrence M. Booth 1932-7-29 1333 Orange Newport Lagoon Comment
  POM202172  Cirsium brevistylum L. M. Booth 1932-5-15 1199 Orange Santa Ana River, 1/2 miles from ocean Comment
  UC537119  Cirsium brevistylum Lawrence M. Booth 1932-5-15 1199 Orange 1/2 mi from Pacific Ocean Comment
  RSA721124  Cirsium californicum Minor Warne 1934-5-19 s.n. Orange Trabuco. Comment
  IRVC9122  Cirsium occidentale var. occidentale R. Yarnell 1966-4-13 74 Orange Santa Ana Canyon, old RSA Botanical Gardens site. Chino Hills Comment
  POM202373  Cirsium occidentale var. occidentale L. M. Booth 1932-6-7 1165 Orange Newport Lagoon. Comment
  RSA643430  Cirsium vulgare 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
  UCR194997  Cirsium vulgare A. C. Sanders, Fred M. Roberts 2008-8-7 36000 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  POM153245  Clarkia bottae C. L. Hitchcock 1928-5-5 49 Orange Mouth of Santa Ana Canyon. 150 Comment
  RSA562745  Clarkia bottae Steve Boyd, T. S. Ross 1992-5-19 7441 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
  RSA67766  Clarkia bottae G. R. Campbell 1951-5-30 16078 Orange San Juan Canyon, Ortega Hwy, 4 mi. inside west border of Cleveland National Forest 152 Comment
  POM3136  Clarkia epilobioides P. A. Munz 1918-5-4 2175 Orange Laguna Beach Comment
  SEINET7067524  Clarkia purpurea subsp. quadrivulnera A. G. Vestal 1947-6-12 s.n. Orange Grade to Trabuco Canyon. Coordinate datum: NAD27. UTM Zone 11, 445302mE, 3724321mN. Comment
  RSA761794  Clarkia rhomboidea Robt. Allen 2003-6-22 12275 Orange West-facing upper slope of Santiago Peak, along North Main Divide Road,. circa 0.10 air miles northwest of Santiago Peak summit. Comment
  SEINET272172  Clarkia similis G. K. Helmkamp, E. A. Helmkamp 1997-4-24 1657 Orange Cleveland National Forest ; Cleveland National Forest 1.6 mi. SE of Ortega Hwy (CA-74) on Rd. 7-S14. UTM 10km cell: MH-5E 1N. San Juan Hot Spring 549 Comment
  CAS-BOT-BC439945  Claytonia perfoliata subsp. mexicana C. B. Wolf 1931-3-6 1853 Orange Trabuco Camp Ground, Trabuco Canyon, west slope of the Santa Ana Mts. 609 Comment
  SD101082  Claytonia perfoliata subsp. mexicana John M. Miller 1978-3-18 709 Orange Santa Ana Mountains; San Juan Creek Canyon, 13.6 miles E of Hwy. 101 on Hwy. 74. 366 Comment
  RSA700034  Clematis lasiantha R. H. McArthur 1934-4-28 s.n. Orange Ladd Canyon Comment
  UC1178494  Clematis lasiantha Peter Kamb 1948-6-19 1106 b Orange s.e. slope Santiago Peak; Santa Ana Mts., Orange-Riverside Counties 1219 Comment
  CHSC116476  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-BC92555  Clematis ligusticifolia John Thomas Howell 1927-8-13 2984 Orange Santa Ana River bottom. Santa Ana Canon [Canyon]. 152 Comment
  UC1201823  Clematis pauciflora R. W. 1933-4-1 Orange near Capistrano Comment
  RSA607432  Cleome isomeris L. C. Wheeler 1932-6-25 868 Orange Newport Bay. 3 Comment
  RSA66687  Cleome isomeris F. W. Peirson 1924-2-10 4530 Orange southward from Corona del Mar. Comment
  UCR215281  Cleome isomeris Fred M. Roberts 2008-3-27 6812 Orange South Coast, Dana Point; Dana Point Headlands, Center for Natural Lands Mgmt. Preserve near Outlook 1, 0.5 km west of Marine Institute, Dana Point Harbor 45 Comment
  RSA708281  Cneoridium dumosum Scott D. White, Jennifer H. Jones 2005-3-31 10853 Orange South Coast: City of Laguna Beach. 549 Nyes Place. Proposed home site on ca. 0.5 acre. 91 Comment
  UC1130452  Cneoridium dumosum A. Lewis April, 1934 401 Orange Near Arch Beach. Corona 7.5'Q. Comment
  UCD116910  Cneoridium dumosum Raymond A. Evans 1951-3-23 s.n. Orange South of Laguna. 60 Comment
  RSA0045604  Collinsia bicolor Lucille Crawford 1932-5-1 981 Orange Silverado Canon. PR8. Comment
  RSA33582  Collinsia heterophylla N. C. Cooper 1944-6-4 1361 Orange San Juan Canyon, lower camp ground. 457 Comment
  RSA305753  Collinsia heterophylla James R. Shevock 1313 Orange Newport Beach Bay. 11 Comment
  RSA408307  Collinsia heterophylla Anstruther Davidson 1920-6-1 3371 Orange Languna Beach Comment
  UC2042141  Comarostaphylis diversifolia subsp. diversifolia R. F. Thorne with E. W. Lathrop, W. Wisura 1977-7-8 49607 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  RSA539346  Commelina coelestis Fred M. Roberts 1987-10-14 3747 Orange Laguna Beach: Lower Blue Bird Canyon at end of Catalina Street. 21 Comment
  IRVC22479  Conium maculatum Fred M. Roberts 1985-4-24 1655 Orange Laguna Beach; Laguna Canyon on Laguna Canyon Rd., 0.7km N jct. El Toro Rd. Southern Coastal 76 Comment
  SD127479  Conium maculatum Reid Moran, Gordon Marsh and Jack Reveal 1977-6-13 24237 Orange Willow Canyon, tributary of Laguna Canyon 124 Comment
  RSA357138  Conium maculatum R. F. Thorne 1975-4-6 45575 Orange San Joaquin Marsh: Near Irvine and coast. Comment
  RSA699123  Conium maculatum J. Vlahos s.n. Orange Santa Ana River by Fairview. Comment
  CDA32186  Convolvulus arvensis T. McCrainie, Mark A. Elvin 2006-9-23 8 Orange Southern Coastal; San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; southwest edge, along San Diego Creek, north of University Drive, east of Highway 73. Comment
  UCR16173  Convolvulus arvensis Art Dawson 1968-5-4 s.n. Orange Rancho Mission Viejo, Ortega Hwy near San Juan Capistrano, 0.5 mi. north of Ranch Headquarters Comment
  RSA650758  Convolvulus arvensis Gary Guntle 1971-5-9 s.n. Orange Eucalyptus grove near Bastanchury Road & Associated . Placentia. Comment
  RSA730987  Conyza bonariensis Fred M. Roberts 2006-11-15 6461 Orange Santa Ana Cyn., 1.0 km ENE Imperial Hwy bridge, between La Palma Ave. and Santa Ana River near Big Springs St. 89 Comment
  UCR193278  Conyza bonariensis A. C. Sanders, Fred M. Roberts 2008-6-17 35512 Orange Peninsular Range; Santa Ana Mtns., middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  CLARK-A1528-918  Conyza canadensis Patricia A. Andrews 1975-6-26 5908 Orange Capistrano Bay Beach 9 Comment
  IRVC9121  Conyza canadensis B. T. Gittins 1966-9-26 1626 Orange 1613 Sandalwood St.; cultivated yard. Costa Mesa Comment
  RSA703085  Conyza canadensis Fred M. Roberts, Arthur Davenport 2003-9-11 6009 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, tributary west of Christianitos Canyon, 1.6 km NNW Sycamore Gate and 10 meters W of Christianitos Road 145 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
  IRVC15219  Conyza coulteri Karlin G. Marsh 1977-9-8 none Orange Newport Beach; in arroyo between MacArthur Blvd. and Ford Aeroneutronics. southern coastal Comment
  UCR192729  Conyza floribunda A. C. Sanders, Fred M. Roberts 2008-5-6 35210 B Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon near Irvine Ranch gate and road junction to cement plant 180 Comment
  POM202716  Cordylanthus maritimus subsp. maritimus L. M. Booth 1932-5-12 1003 Orange Newport Bay. Comment
  RSA733933  Cordylanthus rigidus Keith E. Hoffmaster 1934-7-15 118 Orange Santa Ana Mts (Modjeska) Comment
  CHSC114117  Cordylanthus rigidus subsp. setiger Sandy Leatherman 2011-7-2 2011 -20 Orange Peninsular Ranges; Chino-Puente Hills region: 50 meters west of Carbon Canyon Road and Lions Canyon Road in the City of Brea; UTM Zone 11S; 427559.41E 3756239.97N. 274 Comment
  RSA506432  Cordylanthus rigidus subsp. setiger Kathy Harper 1988-7-16 s.n. Orange Cleveland National Forest, on Hwy 74 near El Cariso. SE of Hwy Comment
  CAS-BOT-BC287838  Coreopsis californica Marcus E. Jones 1926-3-10 s.n. Orange Near Santa Ana Canon Comment
  HSC5417  Corethrogyne filaginifolia J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  RSA0015955  Corethrogyne filaginifolia Fred M. Roberts 2012-5-10 7567 Orange San Joaquin Hills: Buck Gully, south tributary, north slope Pelican hill, just north of Pelican Hills Drive, 0.7 km N Pelican Hill summit. 154 Comment
  PASA1814  Corethrogyne filaginifolia Frank W. Peirson 1924-8-29 Orange 2 miles from Balboa on toad inland along creek Comment
  UCR224157  Corethrogyne filaginifolia var. virgata Fred M. Roberts 2008-7-10 7072 Orange South Coast, Dana Point Headlands, CNLM Preserve, along north slopes above Dana Strand Beach, 0.8 km west norhwest of Marine Institute, Dana Point Harbor 45 Comment
  IRVC24510  Coronopus didymus Fred M. Roberts 1986-3-14 2647 Orange University of California campus, south side of Alderich Park near Engineering Building, Irvine 33 Comment
  SD133232  Cortaderia selloana A. C. Sanders 1990-10-6 10196 Orange Newport Bay; North Star County Beach area on the southwest end of bay; ca 2 km inland of highway 1; on sandy flats and bluffs 0 Comment
  UC1930991  Cotyledon orbiculata R. E. Riefner Jr. 2006-8-25 06 -407 Orange South Coast: Dana Point Harbor, Dana Point Harbor Dr. at Ensenada Pl. Comment
  UCR182817  Cotyledon orbiculata R. E. Riefner Jr. 2006-8-25 06- 407 Orange South Coast, Dana Point Harbor, Dana Point Harbor Dr. at Ensenada Pl. 13 Comment
  RSA732122  Crassula connata A. C. Sanders, Fred M. Roberts 2008-4-8 34725 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  UCR237833  Crassula connata Mark A. Elvin 2003-2-2 2260 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  RSA71016  Cressa truxillensis F. W. Peirson 1924-5-31 4647 Orange Laguna Canyon, near Laguna Beach. 106 Comment
  SD143548  Cressa truxillensis R. D. Goeden, D. W. Ricker 1965-7-7 Orange Tustin Township near Peters Canyon Channel, east of Santa Ana Marine Corps Air Station 60 Comment
  UCR157706  Cressa truxillensis Adrian Wolf 1998-7-1 420 Orange South Coast, north Newport Oil Fields and East Banning Park; between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 6 Comment
  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
  HSC25245  Croton californicus R. W. Spjut 1972-2-22 2222 Orange Near S Laguna Beach along Hwy. 1 0 Comment
  POM17485  Croton californicus P. A. Munz 1923-4-1 6913 Orange 2 miles north of Laguna. 5 Comment
  UC17567  Croton californicus C. W. Hamlin 1820-1 61 Orange Buena Park Comment
  UCR193030  Croton californicus A. C. Sanders, Fred M. Roberts 2008-6-17 35518 Orange Peninsular Range; Santa Ana Mtns., middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  SEINET10453718  Croton setiger Charlene A. Bennett 1976-7-20 Bennett 427 Orange Collected along Crown Valley Parkway, 1 mi SW of I-5. 30 Comment
  UCR197692  Crypsis schoenoides A. C. Sanders, Fred M. Roberts 2008-9-18 36076 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  SEINET6971880  Cryptantha W. P. Vestal, A. G. Vestal 1955-3-24 3451 D Orange Trabuco Canyon, about 5 miles east of El Toro. Comment
  POM3964  Cryptantha clevelandii var. florosa I. M. Johnston 1918-5-4 2214 Orange Hills back of Laguna Beach. 152 Comment
  JEPS67671  Cryptantha intermedia Alice King 1908-3-9 Orange Anaheim plain Anaheim Comment
  UC1063976  Cryptantha intermedia A. Lewis 1934-3-1 386 Orange Borrego Canyon Corona Quad. 426 Comment
  UCR5137  Cryptantha intermedia Barbara T. Gittins, O. F. Clarke 1966-3-19 897 Orange Pacific slope, Irvine Ranch, east of University of California Irvine campus, Newport Beach 91 Comment
  POM3955  Cryptantha microstachys P. A. Munz 1918-5-4 2222 Orange Laguna. Comment
  RSA550608  Cryptantha microstachys Fred M. Roberts, Carol A. Roberts 1989-4-20 4305 Orange Santa Ana Mtns: Upper Lion Canyon along San Juan Trail just south of Blue Jay Campground, 2.5km SE Los Pinos Peak. 980 Comment
  UCR209368  Cryptantha microstachys Fred M. Roberts, Linda Farley 2008-3-28 6829 Orange Santa Ana Mountains, Upper Weir Canyon, Irvine Ranch Conservancy, 3.3 km east-northeast of Robbers Peak on ridge north of canyon 427 Comment
  UCR47758  Cryptantha microstachys F. R. Fosberg 1930-6-15 S- 2883 Orange Santa Ana Mtns, Santiago Canyon, above Modjeska's home. Comment
  IRVC19956  Cryptantha microstachys Gordon A. Marsh 1983-4-16 Orange Sycamore Hills, central sector, lower margin, Laguna Beach Comment
  SD247614  Cryptantha muricata R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1997-4-27 49663 Orange Northern Santa Ana Mountains: Coal Canyon (NW of Sierra Peak). Comment
  CDA42236  Cucurbita digitata Bellue - Paddock Oct 1944 Orange Near Ry. [Railway?] 0 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
  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
  IRVC19540  Cupressus forbesii Karlin G. Marsh 1982-7-30 Orange Coal Canyon, west slope, at Claymont Clay Mine. Santa Ana Mountains Comment
  MACF018551  Cupressus forbesii Ken Zysk 1971-3-29 P 80 Orange Collected at Harding Canyon, off Harding Canyon Rd. 396-1402 Comment
  UC401430  Cupressus forbesii J. G. Cooper 1872-5-20 Orange Santa Anna Mts. [Santa Ana ?] Comment
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Sep 16 2010
  NY16674  Cupressus guadalupensis var. forbesii C. B. Wolf 1935-1-2 6278 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
  UCR140976  Cupressus sempervirens June Latting 1973-6-30 s.n. Orange Santa Ana Mountains, Beeks Place, south of Oak Flat 854 Comment
  SD245332  Cuscuta subinclusa Robert 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
  UCSB52888  Cuscuta subinclusa Roberts, Fred 1983-9-26 Orange Santa Ana Mtns.: Lion Canyon, Chiquito Basin Trail; 3.5 km. NNE Lower San Juan Picnic Ground; 4.2 km. SSE Los Pinos Peak 815 Comment
  RSA17587  Cynara cardunculus subsp. flavescens C. B. Wolf 1936-7-8 8100 Orange Coast Hwy, Western end of Newport Bay. 9 Comment
  HSC24269  Cynodon dactylon James Hendrickson 1970-7-25 5032 Orange 3.5 mi. NW of Huntington Beach on sandy margin of Bolsa Bay, ca. 3/4 mi. SE of Warner Ave. along Pacific Coast Hwy. 1 Comment
  RSA678742  Cynodon dactylon Valerie L. Soza, Kenneth Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1112 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  SD253871  Cyperus Jim Riley 2013-10-15 118 Orange San Clemente area; 0.56 miles ESE intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 68 Comment
  UCR266423  Cyperus difformis D. E. Bramlet 2009-11-20 4422 Orange South Coast, San Diego Creek between Irvine and Newport Back Bay 8 Comment
  CAS-BOT-BC114320  Cyperus esculentus Helen D. Geis 1902-9-1 s.n. Orange Ditch banks, Santa Ana. Comment
  RSA5507  Cyperus esculentus Carl B. Wolf 1932-6-28 3761 Orange Bryant Ranch: along western half of north boundary of 40 acre Valencia orange grove at Bryant Ave. and Hansen Road. 9 Comment
  UCSB54128  Cyperus esculentus Roberts, Fred 1986-8-9 Orange Yorba Linda; Santa Ana Canyon, Green River Golf Course above Santa Ana River, UTM 3747650mN, 437300mE 124 Comment
  RSA153444  Cyperus laevigatus F. R. Fosberg 1931-6-19 746 Orange Carbon Canyon, Puente Hills. Comment
  POM187598  Cyperus laevigatus Joseph A. Ewan 1931-10-3 5197 Orange Below La Vida Soda Springs [now La Vida Mineral Springs], Carbon Canyon. Comment
  UCR138404  Cyperus niger Scott D. White, Brian Leatherman 1997-6-12 5320 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
  POM201904  Cyperus niger var. castaneus L. M. Booth 1932-7-19 1287 Orange Bolsas Marsh. Comment
  RSA92111  Cyperus odoratus F. W. Peirson 1924-10-19 2532 Orange Wintersberg Comment
  SD260851  Cyrtomium falcatum R. E. Jr. Riefner 2012-1-16 12 5 Orange City of Newport Beach, Corona Del Mar, beach area west of Morning Canyon Road. 0 Comment
  SEINET3870581  Cyrtomium falcatum R. E. Riefner Jr. 2006-9-5 06 -417 Orange Southern Coast: Corona del Mar, Ocean Blvd. near Iris Ave. (Laguna Beach 7.5'Q).; 0 11 Comment
  UC2031956  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 Comment
  UCR208856  Dactylis glomerata C. B. Wolf 1932-6-13 3715 Orange Fullerton, Rose Drive 53 Comment
  CDA20218  Dactyloctenium aegyptium R. Tiffer 2003-9-4 PDR 1256123 Orange Southwestern California; Santa Ana River bank in Anaheim. 0 Comment
  RSA295240  Dactyloctenium aegyptium E. Wegener 1970-8-11 LASCA- 948 Orange Near Costa Mesa. Comment
  RSA431670  Datisca glomerata F. R. Fosberg 1931-6-21 5151 Orange Silverado Canyon. Santa Anita Mts. Comment
  RSA562811  Datisca glomerata Steve Boyd, Timothy S. Ross 1992-5-20 7483 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon, along foot trail upstream from end of old roadgrade to upper homestead (corrugated steel building). 350 Comment
  UC2042145  Datisca glomerata R. F. Thorne with E. W. Lathrop, W. Wisura 1977-7-8 49563 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  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
  RSA0046822  Datura stramonium Jason Berkley 1994-5-10 27 Orange Carbon Canyon Regional Park, off face of dam, off the bike trail coming from Rose Dr. Comment
  RSA33529  Datura wrightii N. C. Cooper 1942-11-9 886 Orange Balboa. Comment
  RSA421914  Datura wrightii N. C. Cooper 1942-11-9 886 Orange Balboa. Comment
  RSA648189  Daucus pusillus Karl Price 1988-5-21 51 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 304 Comment
  CAS-BOT-BC299333  Deinandra fasciculata John Thomas Howell 1931-6-1 6625 Orange San Clemente Comment
  JEPS38341  Deinandra fasciculata Lawrence M. Booth 1932-5-12 1038 Orange Newport Bay Comment
  UC579523  Deinandra fasciculata A. Lewis 1934-4-1 403 Orange Canada Gubernadora Corona Quadrangle, Canada Gubernadora 579 Comment
  UC75961  Deinandra fasciculata E. A. Zumbro 1902-1-1 388 Orange Comment
  UCSB56508  Delairea odorata Marsh, G.; Marsh, K. 1978-1-22 Orange Santa Ana Mountains; Ladd Cnayon Comment
  CAS-BOT-BC9091  Delphinium cardinale B. D. Stark 1931-6-6 2231 Orange Rancho Santa Ana 137 Comment
  RSA542412  Delphinium cardinale Karlin G. Marsh, Gordon Marsh 1989-6-25 s.n. Orange Santa Ana Mountains: Central Santiago Canyon, Santiago Truck Trail, ca. 4.4km SW Santiago Peak. 792 Comment
  RSA398771  Delphinium parryi Anstruther Davidson 1910-4-20 1782 Orange Corona Del Mar. Comment
  UCR192230  Delphinium parryi A. C. Sanders, Fred M. Roberts 2008-5-6 35262 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  RSA539368  Delphinium parryi Fred M. Roberts, Carol A. Roberts 1988-6-2 4030 Orange Santa Ana Mtns: Silverado Canyon, Maple Springs Truck Trail, 4.3km above gate. 1.0 km WSW Bald Peak. 817 Comment
  POM13827  Delphinium patens subsp. hepaticoideum P. A. Munz 1922-4-28 5042 Orange Leach Canyon, Santa Ana Mountains 671 Comment
  RSA548863  Delphinium patens subsp. hepaticoideum Fred M. Roberts, Carol A. Roberts 1988-6-10 4095 Orange Santa Ana Mountains: Modjeska Peak, 0.9km SW summit. 1542 Comment
  RSA5336  Dendromecon rigida subsp. rigida B. D. Stark 1933-1-4 4488 Orange Ridge above Claymine Canyon. No. end of Santa Ana Mts. 305 Comment
  UCR282155  Deschampsia danthonioides R. E. Riefner Jr. 2014-5-17 14- 127 Orange South Coast, city of Huntington Beach, east of Beach Blvd. and north of Adams Ave, along Coldwater Lane vicinity of Kingsdale Dr., Batlett Park 1 Comment
  RSA162740  Descurainia californica J. D. Olmsted 1959-4-23 472 Orange Spring Trail at Beacon Pines Ranch; 9 miles SW of Corona. 762 Comment
  POM369419  Descurainia pinnata subsp. menziesii Albert J. Perkins 1921-3-15 s.n Orange Garden, Santa Ana. Comment
  VVC357  Dicentra chrysantha P. J. MacKay 1990-5-25 s.n. Orange Peninsular Range, Hwy 74 near San Juan Hot Springs 198 Comment
  CHSC26004  Dichelostemma capitatum subsp. capitatum E. Bushey 1968-5-15 54 Orange San Juan Canyon. 365 Comment
  RSA367484  Dichelostemma capitatum subsp. capitatum Christopher Davidson 1977-5-18 5626 Orange Santa Ana Mts. Cleveland Nat. Forest. Bear Springs 1220 Comment
  RSA573300  Dichondra micrantha Steve Boyd, Timothy S. Ross, Bob Boyd 1994-9-14 8357 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon just downstream of Lucus Canyon Trail crossing near old mining camp. 299 Comment
  RSA0012746  Dichondra occidentalis Fred M. Roberts 2012-5-10 7571 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
  UCR37799  Dichondra occidentalis Steve Boyd 1981-5-13 s.n. Orange South Coast, Pelican Hill, Irvine Ranch Property, San Joaquin Hills south of Corona del Mar 218 Comment
  CAS-BOT-BC209074  Digitaria sanguinalis Ira L. Wiggins 1965-10-2 20268 Orange Curbway, at corner of Longview Dr. and Dorothy Lane, Fullerton Comment
  SD245206  Digitaria sanguinalis R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49611 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station. Comment
  UCR273943  Diospyros Mitch Provance 2007-7-11 707- 01 Orange Coastal Regions of Southern California, Between Irvine and Foothill Ranch, UCR South Coast Research and Extension Center 122 Comment
  SEINET13682959  Diplacus aurantiacus R. Nelson, Baumann, Kondratieff, Sargent 1988-1-12 5117 Orange Cleveland NF, San Juan Creek at Lower San Juan Campground. 366 Comment
  SBBG28885  Diplacus puniceus N. C. Cooper 1944-6-4 1321 Orange Elsinore Mtn, Lookout at top 1066 Comment
  CDA3678  Diplotaxis tenuifolia Margaret Bellue, Tubbs, Johnson Oct 1944 Orange Bataxia Street Crossing, Santa Fe. 0 Comment
  RSA678747  Distichlis littoralis Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1102 Orange Seal Beach National Wildlife Refuge: Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  UC284738  Distichlis spicata Carl B. Wolf 1932-6-28 3785 Orange Bryant Ranch, edge of field on Bryant Ave. west of northeast corner of NW 40 of SE 160 91 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
  SD27980  Draba cuneifolia Carl B. Wolf 1932-2-17 2661 Orange Rancho Santa Ana Botanic Garden, just west of Adenostoma sparsifolum Bed. 600 Comment
  CAS-BOT-BC41701  Draba cuneifolia var. sonorae Helen D. Geis 1902-3-29 s.n. Orange Santa Ana River. Comment
  RSA701645  Drymocallis glandulosa Keith E. Hoffmaster 1934-4-22 s.n. Orange Santa Ana Mountains Comment
  IRVC124  Dryopteris arguta A. S. Boughey, P. Pembrook 1965-6-15 1056 Orange Santa Ana Mountains; Saddleback Mtn., Cleveland National Forest. Peninsular Ranges Comment
  RSA754061  Dryopteris arguta A. C. Sanders, Fred M. Roberts 2008-7-16 35862 Orange Lomas de Santiago, lower Hangmans Tree Canyon 379 Comment
  SD144155  Dryopteris arguta Scott D. White 1996-12-20 4631 Orange Above Modjeska Canyon: proposed water tank site. 420 Comment
  UCR100209  Dryopteris arguta Scott D. White 1996-12-20 4631 Orange Santa Ana Mountains, above Modjeska Canyon; proposed water tank site 488 Comment
  UCR193840  Dryopteris arguta A. C. Sanders, Fred M. Roberts 2008-7-16 35862 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hangmans Tree Canyon 379 Comment
  UCR215285  Dryopteris arguta Fred M. Roberts 2008-5-14 6962 Orange Lomas de Santiago, Loma Ridge, upper Bee Flat Canyon below Loma Ridge Road, 1.3 km north of Bee Peak and 5.4 km NW of Bolero Lookout. Irvine Ranch Conservancy 337 Comment
  RSA791466  Dryopteris arguta Keith E. Hoffmaster 1928-5-29 36 Orange San Onofre. Comment
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Nov 19 2013
  UC905133  Dudleya R. V. Moran 1948-6-23 3097 Orange n-facing cliff near mouth of Aliso Canyon (s of Laguna Beach); ; near mouth of Aliso Canyon, S of Laguna Beach, Orange Co. 7 Comment
  CAS-BOT-BC428263  Dudleya edulis Reid Moran 1949-5-28 3257 Orange Aliso Canyon, Laguna Beach Comment
  CAS-BOT-BC428265  Dudleya edulis Cecil Hart 1928-5-27 s.n. Orange Laguna Beach Comment
  UC933265  Dudleya edulis Reid Moran 1949-5-28 3258 Orange Aliso Canyon Laguna Beach Comment
  RSA83424  Dudleya lanceolata F. W. Peirson 1924-5-31 4673 Orange 5 miles southeast of Laguna Beach. Comment
  UCR150916  Dudleya lanceolata Valerie Soza, LeRoy Gross 1999-6-8 504 Orange Santa Ana Mountains, Santiago and Modjeska Canyons, above Tucker Wildlife Sanctuary, above the town of Modjeska 518 Comment
  RSA773547  Dudleya multicaulis Fred M. Roberts 2008-6-10 7037 Orange Lomas de Santiago: Loma Ridge, above and to the west of the Haul Road, 2.3 km NNW Bee Peak. Irvine Ranch Conservancy 429 Comment
  UCR210059  Dudleya pulverulenta A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37192 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hangmans Tree Canyon 379 Comment
  UCR24651  Dudleya pulverulenta John C. Roos 1965-6-16 s.n. Orange Dana Point Comment
  UC1015432  Dudleya pulverulenta subsp. pulverulenta Jack Whitehead 1946-6-12 396 Orange Dana Point Comment
  UCR224165  Dudleya pulverulenta subsp. pulverulenta Fred M. Roberts 2008-7-10 7076 Orange South Coast, Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8 km west-northwest of Marine Institute, Dana Point Harbor 65 Comment
  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
  RSA423513  Dudleya stolonifera Albert J. Perkins 1912-8-22 s.n. Orange 3 miles SW of Laguna Beach. Aliso canyon. Comment
  CAS-BOT-BC109766  Dudleya viscida Carl B. Wolf 1936-6-17 7948 Orange Santa Ana Mountains, along Ortega Highway, 0.6 mile below San Juan Hot Springs. 182 Comment
  RSA715245  Dudleya viscida A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33053 Orange San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 366 Comment
  UC1015403  Dudleya viscida Reid Moran 1931-1 5246 Orange San Juan Hot Springs Comment
  RSA0045610  Echidiocarya californica Keith E. Hoffmaster 1935-2-9 841 Orange Santa Ana Mts., near El Toro. Comment
  CAS-BOT-BC197033  Echinochloa colona M. F. Bradshaw 1902-7-1 s.n. Orange Orange Comment
  RSA731754  Echinochloa colona Fred M. Roberts 2007-11-9 6651 Orange San Juan Canyon along San Juan Creek, about 0.6 km E San Diego FWY. 24 Comment
  UCR44900  Echinochloa colona B. G. Pitzer, L. F. LaPre 1986-10-20 323 Orange Trabuco Road at intersection with Sand Canyon Avenue, NW of El Toro Marine Air Station 79 Comment
  RSA184152  Echinochloa colona I. L. Wiggins 1965-10-24 20295 Orange Yorba Linda Blvd. 1/4 mi. E of State College Blvd., Fullerton. Comment
  IRVC27752  Echinochloa crus-galli Mark A. Elvin 2004-5-2 3426 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  UC537284  Echinochloa crus-galli Lawrence M. Booth 1932-7-18 1263 Orange Newport Bay Costa Mesa; , Costa Mesa Comment
  RSA708444  Echinochloa crus-galli Mark Elvin 2004-5-2 3426 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
  IRVC27653  Echinodorus berteroi R. E. Reifner 2000-8-21 20 728 Orange Irvine Lake [Santiago Reservoir], first cove SE of the dam Santa Ana Mtns. 238 Comment
  RSA0125888  Echium candicans Fred M. Roberts 2012-5-4 7545 Orange San Joaquin Hills: Buck Gully, along San Joaquin Hills Road, just west of Harbor Watch Park, 2.9 km W Signal Peak. 174 Comment
  SD142746  Echium fastuosum A. C. Sanders 1990-10-6 10183 Orange Newport Bay, North Star County Beach area on the southwest end of the bay 0 Comment
  UC1930109  Ehrharta calycina Scott D. White, Michael Honer 2003-6-12 9542 Orange SOUTHWESTERN SANTA ANA MTS FOOTHILLS: Rancho Mission Viejo. Upper end of Trampas Canyon. Comment
  SBBG133403  Ehrharta calycina S. D. White, M. Honer 2003-6-12 9542 Orange southwestern Santa Ana Mtns foothills, Rancho Mission Viejo, upper end of Tramas Cyn 152 Comment
  UCR240173  Ehrharta erecta R. E. Riefner Jr. 2012-2-1 12- 15 Orange South Coast, city of Dana Point, Dana Point Harbor, vicinity of Puerto Pl. and Dana Point Harbor Drive 2 Comment
  UCR266405  Ehrharta erecta D. E. Bramlet 2010-3-3 s.n. Orange 1691 Mesa Dr., Newport Beach 16 Comment
  RSA5918  Eichhornia crassipes E. R. Johnson 1932-6-29 3808 Orange Floating in water, Santa Ana River, SW of Ranch Houses, Rancho Santa Ana. 122 Comment
  RSA592059  Elatine brachysperma R. E. Riefner 1994-4-15 94 -320 Orange Dana Hills NW of Cooks Reservoir. Comment
  UCR174225  Eleocharis montevidensis A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33003 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
  RSA798192  Eleocharis montevidensis var. parishii Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49571 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  POM202156  Eleocharis palustris L. M. Booth 1932-5-15 1202 Orange Costa Mesa. Comment
  RSA708228  Eleocharis palustris Fred M. Roberts, Robert L. Allen, Chris Barnhill, Carol A. Roberts 2005-4-10 6164 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
  RSA746527  Eleusine coracana subsp. africana R. E. Riefner Jr. 2008-12-28 8 -391 Orange City of Irvine, San Diego Creek at Alton Pkwy. 48 Comment
  UCR191242  Elymus condensatus A. C. Sanders 2008-4-29 35137 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
  UCR281490  Elymus condensatus Mitch Provance 2017-6-9 617- 100 Orange Coyote Hills, North Fullerton, East side of Gilbert St., 0.5 miles ENE of intersection with Castlewood Dr. 124 Comment
  RSA34  Elymus glaucus J. T. Howell 1927-6-17 164 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA751316  Elymus glaucus A. C. Sanders, Fred M. Roberts 2008-5-6 35274 Orange Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 366 Comment
  CLARK-A1528-4606  Elymus glaucus subsp. glaucus John C. Roos 1937-5-10 2336 Orange San Juan Capistrano Comment
  UCR215297  Elymus glaucus var. glaucus Fred M. Roberts 2008-5-7 6940 Orange Lomas de Santiago, Limestone Ridge between Dripping Spring and Limestone Canyon, 3.5 km NW of Bolero Lookout and 1.7 km east of Bee Peak. Irvine Ranch Conservancy 481 Comment
  RSA539340  Elymus multisetus Fred M. Roberts, Carol A. Roberts 1988-6-9 4078 Orange Santa Ana Mountains: Modjeska Peak, 0.9km SW summit., 3730500mN, 449000mE 1542 Comment
  SEINET10841966  Elymus stebbinsii subsp. stebbinsii LeRoy R. Abrams Abrams 1822 Orange Santiago Pk. Comment
  CAS-BOT-BC412641  Emex spinosa E. L. Paddock 1943-5-26 12740 Orange Frank Anderson grove, Manchester, 1/8 mile south of Midway Drive, Anaheim Comment
  RSA552942  Emmenanthe penduliflora Fred M. Roberts, Carol A. Roberts 1989-4-20 4299 Orange Santa Ana Mtns.: upper Lion Canyon along San Juan Trail just south of Blue Jay Campground, 2.5km SE Los Pinos Peak. 980 Comment
  UCR186584  Encelia californica Robert DeRuff 1988-5-18 315 Orange Southern Coast, Newport Beach, Newport Back Bay, Big Canyon 3 Comment
  RSA746042  Encelia californica Archie F. Iskaq 2006-2-4 1 Orange Southern Coastal: San Joaquin Marsh; NW edge of marsh. Comment
  IRVC670  Encelia farinosa D. Orr 1965-3-27 Orange Trabuco Rd. 3mi E El Toro Marine Base. El Toro Comment
  RSA797597  Epilobium canum subsp. angustifolium Robert F. Thorne 1977-11-21 49994 Orange Santa Ana Mountains: tributary canyon to San Juan Canyon about 2 miles above San Juan Fire Station Comment
  CAS-BOT-BC5221  Epilobium canum subsp. canum David Daniels Keck 1932-9-30 1905 Orange Dana Point, near San Juan Capistrano. Comment
  LA206113  Epilobium canum subsp. latifolium W. E. Pequegnat; 1937-8-11 7 a Orange Santa Ana Mountains, Santiago Peak Comment
  RSA717047  Epilobium ciliatum Fred M. Roberts 2005-10-3 6290 Orange San Juan Capistrano: San Juan Creek, La Novia Road bridge to 100m E of bridge, 1.4km E Mission San Juan Capistrano. 27 Comment
  UCR182903  Epilobium ciliatum Pat Akers 2006-3-25 PA4 06 Orange Yorba Linda. Santa Ana River on a large (300-400 ft) sandy/cobbly flat. south of La Palma Dr, 0.6-0.9 mi. east of Yorba Linda Dr 122 Comment
  UCR237923  Epilobium ciliatum Dick Newell, Judy Booth 2012-6-24 276 A Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, on Maple Springs Road 1.9 mi. NE of Maple Springs gate 817 Comment
  RSA72176  Epilobium ciliatum subsp. ciliatum F. W. Peirson 1924-5-31 4653 Orange Laguna Canyon, near Laguna Beach. 107 Comment
  UCR175445  Epipactis gigantea Mark A. Elvin, A. C. Sanders 2005-9-2 4495 Orange Peninsular Ranges, Santa Ana Mtns: Mouth of Lion Canyon, just upstream from Lower San Juan Campground 457 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
  RSA699856  Equisetum hyemale var. affine Minor Warne 1934-3-1 s.n. Orange Santa Ana River Banks Comment
  RSA12  Equisetum laevigatum J. T. Howell 1927-6-6 42 Orange Santa Ana River bottom, Rancho Santa Ana 152 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
  RSA753080  Eragrostis A. C. Sanders, Fred M. Roberts 2008-9-18 36091 Orange Lomas de Santiago, Santiago Creek Canyon c. 0.5-0.8 miles above the highway bridge 300 Comment
  RSA734342  Eragrostis barrelieri A. C. Sanders, Linda Farley, Fred M. Roberts, David E. Bramlet 2008-4-1 34633 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 366 Comment
  RSA436022  Eremocarpus setiger Malcolm M. Rice 1927-9-4 1953 Orange San Juan Creek Bed, San Juan. Comment
  RSA0121313  Eriastrum sapphirinum subsp. dasyanthum P. A. Munz 1949-5-26 13374 Orange Head of Sierra [Freemont] Canyon, Santa Ana Mountains 732 Comment
  RSA0121318  Eriastrum sapphirinum subsp. dasyanthum Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, head of Gypsum Canyon 412 Comment
  RSA644962  Ericameria cuneata var. cuneata R. E. Riefner, Adrian Wolf 2000-1-18 20 -104 Orange NCCP North Ranch Policy Plan Area. Upper drainage of Fremont Canyon: S. of Claymore Mine. 610 Comment
  UCR210049  Ericameria palmeri A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37197 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, west of Limestone Canyon Rd. 366 Comment
  JEPS19141  Ericameria palmeri var. pachylepis L. M. Booth 1933-10-18 Orange Newport Comment
  OBI5705  Ericameria palmeri var. pachylepis Carl B. Wolf 1931-10-30 2504 Orange Hiils on N side of Santa Ana cyn. (Rancho Santa Ana Botanic Garden-ner marker no 14E 9) 207 Comment
  RSA151083  Ericameria palmeri var. pachylepis Peter H. Raven 1961-10-15 16854 Orange Santa Ana Canyon just W of Hwy 55, at W end of Peralta Hills 137 Comment
  SEINET7073539  Ericameria palmeri var. pachylepis A. G. Vestal 1963-3-27 s.n. Orange Ridge above Cai+-ada Gobernadora. About 6.2 miles up. UTM Zone 11, 446709mN, 3718372mN. Coordinate datum: NAD27. Comment
  UC1118798  Ericameria parishii var. parishii A. Lewis 1934-5-1 414 Orange Trabuco Canyon Cleveland National Forest, Elsinore Quad., Trabuco Canyon 1341 Comment
  CAS-BOT-BC293092  Ericameria pinifolia John Thomas Howell 1927-10-22 3158 Orange On n. side of Santa Ana Canon [Canyon] 213 Comment
  IRVC20221  Ericameria pinifolia Fred M. Roberts 1982-10-14 829 Orange Temple Hill, 1.1km NNW Top of the World School, Laguna Beach 259 Comment
  RSA443826  Erigeron foliosus var. stenophyllus Gordon Marsh, Karlin G. Marsh 1978-5-20 s.n. Orange Coal Canyon, Santa Ana Mts. 152 Comment
  RSA93112  Erigeron philadelphicus F. W. Peirson 1924-2-9 4522 Orange Between Wintersberg and the sea. Comment
  UCD119238  Eriodictyon crassifolium K. M. Meyer; A. Townesmith and T. Scott 2007-3-10 1 Orange Cleveland National Forest, 0.5 mi. N. Main Divide Rd./NF3S04, off Hwy. 74. Elsinore Mountains, ridge top. 917 Comment
  RSA0045584  Eriodictyon crassifolium Ken Eastman 1932-5-8 s.n. Orange Saddle Back Comment
  RSA211  Eriogonum elongatum J. T. Howell 1927-9-24 741 Orange Santa Ana Botany Garden 152 Comment
  RSA716727  Eriogonum elongatum Fred M. Roberts 2004-8-21 6101 Orange Santa Ana Mtns.: Hot Springs Cyn., Hot Springs Cyn. Rd., c.a. 0.8km by road N. jct. SR 74; 0.7 km NNW Juan Rancho Survey Mark. 255 Comment
  UCR193801  Eriogonum elongatum A. C. Sanders, Fred M. Roberts 2008-7-3 35675 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 Comment
  RSA542526  Eriogonum elongatum Fred M. Roberts 1986-11-5 3205 Orange Santa Ana Mountains: Upper Mabey Canyon near top of Skyline Dr., 2.7 km SE Sierra Peak, NE of Oak Flat. 259 Comment
  UCSB48016  Eriogonum elongatum Roberts, Fred 1980-9-14 Orange Santa Ana Mtns: San Juan Cyn, 2.5km ENE San Juan Guard Station; 2.1km WSW Lower San Juan Picnic Ground 345 Comment
  CAS-BOT-BC249759  Eriogonum elongatum var. elongatum James L. Reveal; Caroline G. Reveal 1972-8-6 2845 Orange Along California Highway 74, San Juan Canyon, Santa Ana Mountains, 2.8 miles east of the Cleveland National Forest line and about 14 miles east-northeast of San Juan Capistrano Comment
  POM201739  Eriogonum fasciculatum L. M. Booth 1932-7-27 s.n. Orange Corona del Mar, Newport Beach, Bluff Ravine Comment
  SDSU6522  Eriogonum fasciculatum B. Mastro 1966-9-10 188 Orange 1 mile south of San Clemente on Hwy. 5, near Capistrano. Comment
  RSA734985  Eriogonum fasciculatum subsp. polifolium A. C. Sanders, T. B. Salvato 2008-5-13 35382 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  UCR250868  Eriogonum fasciculatum subsp. polifolium Dick Newell, Judy Booth 2014-4-27 365 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Maple Springs Road 0.8 mi. ENE of lower gate 632 Comment
  CAS-BOT-BC253217  Eriogonum fasciculatum var. fasciculatum C. B. Wolf 1931-8-9 1171 Orange Bottom of ravine near ocean 1/2 mile south of Corona del Mar Beach, 1st small canyon 7 Comment
  UC520304  Eriogonum fasciculatum var. fasciculatum Joseph Andorfer Ewan 1932-7-28 7705 Orange Corona del mar Comment
  UCSB41761  Eriogonum fasciculatum var. foliolosum Walker, Richard 1966-5-15 Orange On south road embankment of Esperanza Ave. about 3 mi. east of Imperial Hwy. east of state landmark of Yorba Hacienda Site. 30 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
  CAS-BOT-BC253482  Eriogonum gracile John Thomas Howell 1927-7-24 2832 Orange Claymine Canyon, N. Santa Ana Mts. 152 Comment
  SBBG62090  Eriogonum gracile J. T. Howell 1927-7-16 2791 Orange N side of Santa Ana Cyn 152 Comment
  POM201803  Eriogonum gracile var. gracile L. M. Booth 1932-7-29 1331 Orange Newport Lagoon Comment
  RSA788926  Eriogonum gracile var. gracile Fred M. Roberts 1999-6-10 5236 Orange Lomas de Santiago: Loma Ridge, Agua Chinon Canyon, 1.4 km S Bolero Spring and 2.1 km W Bolero Lookout. 258 Comment
  RSA0061175  Eriogonum nudum subsp. pauciflorum Robt. Allen 2007-8-11 s.n. Orange NW-facing slope of Santiago Peak, along Main Divide Road. 1701 Comment
  UCR66988  Eriogonum parvifolium A. C. Sanders 1990-10-6 10179 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
  UC718404  Eriogonum wrightii var. subscaposum Carl B. Wolf 1933-8-24 5404 Orange Summit of Santiago Pk. Santa Ana Mts., Santiago Pk. 1731 Comment
  CAS-BOT-BC297327  Eriophyllum confertiflorum L. M. Booth 1932-5-12 1042 Orange Newport Bay Comment
  POM202177  Eriophyllum confertiflorum L. M. Booth 1932-5-12 1042 Orange Newport Bay. Comment
  IRVC21386  Eriophyllum confertiflorum var. confertiflorum A. S. Boughey 1968-7-9 408 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  RSA657739  Eriophyllum confertiflorum var. confertiflorum Ken Greby 1985-5-17 29 Orange On hillsides behind PG and E substation located 2 km. SE from Laguna Canyon Rd., on El Toro Rd., adjacent to Leisure World. Comment
  RSA682752  Erodium botrys Scott D. White, Amanda Duchardt 2003-3-27 8846 Orange Santa Ana Mountain Foothills: Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  RSA391773  Erodium botrys E. R. Johnson 1935-3-1 6293 Orange 1 miles west of Atwood, south side of Railroad. 91 Comment
  RSA583212  Erodium brachycarpum R. E. Riefner Jr. 1998-4-17 95 -72 Orange San Clemente State Beach. Comment
  RSA747593  Erodium cicutarium Fred M. Roberts 2000-5-5 5321 Orange Lomas de Santiago: Loma Ridge, Agua Chinon Cyn., north slope, 1.6 kmSSW Bolero Spr. and 2.6 km W Bolero Lookout. 308 Comment
  RSA732084  Erodium moschatum A. C. Sanders, Fred M. Roberts 2008-3-25 34555 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills. 259 Comment
  RSA423  Erodium moschatum J. T. Howell 1928-2-7 824 Orange Near the ranch houses, Rancho Santa Ana 152 Comment
  RSA697438  Erysimum capitatum R. H. McArthur 1934-3-25 s.n. Orange Above forks of Black Starr & Santiago Creek bottom Comment
  SEINET13679551 Image available Erythranthe floribunda A. C. Sanders, T. B. Salvato 2008-1 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
  UCR210363  Erythrina T. B. Salvato, Billy Deane 2006-10-16 1926 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  RSA734963  Eschscholzia californica A. C. Sanders, Fred M. Roberts, A. O'Neal 2008-5-9 35308 Orange Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir. 346 Comment
  OBI11817  Eschscholzia californica Carl B. Wolf 1935-5-19 6873 Orange Santa Ana Mts, Baker Cyn, W Ladd Truck Trl 305 Comment
  IRVC29095  Eschscholzia californica var. peninsularis Fred M. Roberts 1989-3-17 4210 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  RSA0010840  Eucalyptus camaldulensis Fred M. Roberts, Sandy Leatherman 2007-11-27 6673 Orange Yorba Linda: Santa Ana Canyon, Santa Ana River wash, S of E La Palma Road near Via Lomas de Yorba Linda, about 0.6 km W Gypsum Cyn. bridge. 113 Comment
  UCR80029  Eucalyptus camaldulensis Scott D. White 1992-10-1 956 Orange City of Brea, immediately north of Carbon Canyon Road & east of Placentia Ave. c. 1 mi (airline) S-SE of Tonner Canyon. 183 Comment
  CDA23092  Eucalyptus utilis Mark A. Elvin, D. G. Kelch 2006-12-9 5305 Orange Southern Coastal; Newport Backbay; Big Canyon, lower end. Comment
  UCR190979  Eucrypta chrysanthemifolia A. C. Sanders, Fred M. Roberts 2008-4-22 34995 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
  UCSB48082  Eucrypta chrysanthemifolia Roberts, Jr., Fred 1981-4-12 Orange Santa Ana Mountains: San Juan Canyon, Hwy 74 2.0km by road SW of San Juan Guard Station; 2.7km SW Juan Rancho Survey Mark 210 Comment
  JEPS1720  Eucrypta chrysanthemifolia var. chrysanthemifolia L. M. Booth 1932-5-19 1063 Orange Newport Bay Comment
  RSA432464  Euphorbia crenulata Gale Sphon 1955-3-13 s.n Orange Silvarado canyon Comment
  RSA0073646  Euphorbia misera Fred M. Roberts 2010-3-12 7175 Orange Southeast Coast: DANA POINT HEADLANDS: Harbor Point Park, South of Green Lantern and west of Dana Point Harbor, c.a. 150 meters SE Interpretive Center. 50 Comment
  RSA305657  Euphorbia misera B. Busenberg 1979-11-14 1925 Orange North of Marina parking lot, Dana Point Comment
  SD109124  Euphorbia misera Grady L. Webster 1966-12-11 7479 Orange Dana Point ocean bluffs on south-facing precipitous slopes at the tops of the bluffs Comment
  SD260945  Euphorbia misera R. E. Jr. Riefner 2012-12-5 12 587 Orange City of Dana Point, Dana Point Harbor, Dana Harbor Drive near Cove Road. 9 Comment
  RSA797403  Euphorbia peplus Keith E. Hoffmaster 1928-5-3 s.n. Orange Santa Ana. 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
  UCR192492  Euphorbia polycarpa A. C. Sanders, Fred M. Roberts 2008-3-25 34560 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR44896  Euphorbia serpens B. G. Pitzer, L. F. LaPre 1986-10-20 0315 Orange City of Irvine, Drainage channel near intersection of Irvine Blvd. and Sand Canyon Avenue. 91 Comment
  CDA1084  Euphorbia serpillifolia subsp. hirtula D. G. Kelch 2006-12-9 6 .534 Orange Along Newport Back Bay Dr. in side canyon. Comment
  RSA17459  Eustoma exaltatum Percy C. Everett 1936-9-29 8275 Orange Rancho Santa Ana, Santa Ana River Bottom, Santa Ana Canyon. 122 Comment
  POM48468  Euthamia occidentalis F. W. Peirson 1924-10-19 5243 Orange Wintersberg. Comment
  CAS-BOT-BC459215  Euthamia occidentalis John Thomas Howell 1927-10-22 3167 Orange Santa Ana River bottom, Sana Ana Canyon 152 Comment
  SBBG101678  Festuca microstachys var. pauciflora S. Boyd with Mistretta 1991-5-9 6193 Orange Oak Flat, SE of Sierra Pk, just W of Riverside County line 792 Comment
  UCSB47619  Festuca myuros Roberts, Fred 1980-4-3 Orange Hills; 1.0km NE Dana Hills High School; Dana Point 75 Comment
  UCR191325  Festuca octoflora A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34608 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 290 Comment
  SD28080  Festuca temulenta E. R. Johnson 1932-5-18 3638 Orange Rancho Santa Ana Botanic Garden, east edge of grain field bordering Rancho. 198 Comment
  RSA716499  Ficus carica Fred M. Roberts, Amber Oneal 2004-8-18 6098 Orange San Juan Capistrno: Ortega Ranch Business Center site, between Rancho Viejo Rd. and I-5 freeway adjacent to Horno Creek; 0.6km NE Mission San Juan Capistrano. 54 Comment
  RSA725507  Ficus carica Fred M. Roberts 2007-9-11 6568 Orange Aliso Viejo: tributary to Aliso Creek on west side of Moulton Pkwy., 0.2 km N Aliso Viejo Pkwy., adj. to Kinder Care Learning Center. 83 Comment
  UCR269242  Ficus carica R. E. Riefner Jr. 2015-8-27 15- 361 Orange South Coast, city of Newport Beach, south of Poppy Street/Ocean Blvd., Buck Gully, Little Corona Beach 7 Comment
  UC2046888  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. 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
  SEINET8465144 Image available Foeniculum vulgare Virginia Carlson 1967-10-11 Orange Near eastern boundary of Fullerton Golf Course north of Bastanchury Road. Comment
  POM201618  Foeniculum vulgare L. M. Booth 1932-8-5 1346 Orange West Newport Beach. Comment
  HSC87010  Frangula californica Reid Moran 1975-7-18 22596 Orange Bottoms of Upper Trabuco Canyon, Santa Ana Mtns. 725 Comment
  RSA391402  Frankenia grandifolia E. Yale Dawson 1948-8-15 5108 Orange Bolsas bay Comment
  RSA5859  Frankenia grandifolia Carl B. Wolf 1932-6-28 3784 Orange Edge of field on Bryant Ave. 9 Comment
  CAS-BOT-BC223805  Frankenia salina Frank W. Peirson 1924-5-31 4659 Orange Laguna Canon [Canyon] Comment
  SD39967  Frankenia salina Edith A. Purer 1932-8-31 4874 Orange Along Route 101. Comment
  UC1543183  Frankenia salina Donald G. Nelson 1935-6-27 331 Orange beaches s Corona del Mar (on bluffs facing ocean, near edge of salt marsh in ravine, s of mouth of Newport Bay) Comment
  RSA663274  Fraxinus dipetala R. E. Riefner Jr. 2000-2-19 20 -119 Orange Santa Ana Mtns. NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek and immediately N. of major stream fork. 305 Comment
  UCR119309  Fraxinus dipetala R. E. Riefner Jr. 2000-2-19 20- 119 Orange Santa Ana Mountains, North Ranch Policy Plan Area. Fremont Canyon: north of Santiago Creek and immediately north of major stream fork 305 Comment
  RSA649055  Fritillaria biflora D. E. Bramlet 2000-4-12 2978 Orange Tributary to Fremont Canyon. the site is 396m northwest of the Edison Spur road and 1.2km southeast of the Fremont ridge road. The locality is 305m southwest of knoll 1515. 372 Comment
  RSA749449  Fritillaria biflora Fred M. Roberts 2009-4-11 6885 Orange Lomas de Santiago: Loma Ridge, upper Dripping Springs Cyn., 0.9 km NE Bee Peak and 1.2 km WNW Dripping Springs. 448 Comment
  UCR132979  Fritillaria biflora Adrian Wolf 2000-4-15 459 Orange Santa Ana Mtns., North Ranch Policy Plan Area, North Baker Canyon Road 335 Comment
  UCR192218  Fritillaria biflora A. C. Sanders, Fred M. Roberts 2008-5-6 35270 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 379 Comment
  UCR261710  Fritillaria biflora Dick Newell, Don Millar, Catherine Lovella 2015-3-17 391 Orange Peninsular Range; Santa Ana Mtns. Foothills, Baker Canyon, 0.15 mi. SE of Baker Canyon Rd. and 0.15 mi. NNE of 'top of Baker 361 Comment
  SEINET10492275  Fuchsia hybrida David B. Dunn 1971-8-13 Dunn 18111 Orange Cultivated plants at costa mesa. Comment
  UCR29049  Fumaria parviflora L. C. Erickson 1952-3-13 s.n. Orange Santa Ana Comment
  RSA737491  Funastrum cynanchoides var. cynanchoides D. E. Bramlet 2008-5-16 4273 Orange Agua Chinon Wash . Site is located 3m north of the access road and 1.1km NE of Hwy 241 229 Comment
  RSA565  Funastrum cynanchoides var. hartwegii J. T. Howell 1927-7-24 469 Orange Claymine Canyon, near Sierra Peak 152 Comment
  RSA761937  Funastrum cynanchoides var. hartwegii Richard Newell 2005-8-23 s.n. Orange San Joaquin Hills, Crystal Cove State Park, about one-quarter mile (0.23 mi) above the parking lot s upper gate & trail head to the park. 88 Comment
  RSA734597  Galinsoga parviflora A. C. Sanders, Fred M. Roberts 2008-5-6 35226 Orange Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin 216 Comment
  JEPS7865  Galium angustifolium subsp. angustifolium Lawrence M. Booth 1932-6-4 1252 Orange Newport Bay Comment
  POM201751  Galium angustifolium subsp. angustifolium L. M. Booth 1932-7-4 1241 Orange Newport Lagoon. Comment
  RSA636102  Galium angustifolium subsp. angustifolium Valerie L. Soza, LeRoy Gross 1999-6-7 490 a Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  RSA7473  Galium angustifolium subsp. angustifolium Carl B. Wolf 1933-8-24 5397 Orange Summit of Santiago Peak, Santa Ana Mountains. 1732 Comment
  POM367761  Galium aparine Albert J. Perkins 1923-4-27 s.n. Orange Trabuco Canyon. Comment
  UCSC001312  Galium aparine Peter Kamb 1948-6-19 1091 Orange Holy Jim Canyon, Santa Ana Mts. 610 Comment
  RSA704936  Galium nuttallii subsp. nuttallii Fred M. Roberts, David E. Bramlet 2004-4-21 6036 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Shady Canyon, tributary to Cristianitos Cyn., 0.65 km NW Sycamore Gate, 0.70 km W of Cristianitos Road. 148 Comment
  RSA682911  Galium parisiense Scott D. White, Amanda Duchardt 2003-5-1 9160 Orange Santa Ana Mountain Foothills: Slopes above west side of Trampas Canyon. 107 Comment
  UCR144152  Galium porrigens Scott D. White, Amanda Duchardt 2003-5-1 9162 Orange Santa Ana Mountains, slopes above west side of Trampas Canyon 183 Comment
  UCR149873  Galium porrigens Scott D. White, Michael Honer 2004-5-17 10390 Orange South Coast, City of Laguna Niguel. Ridges and open slopes directly N of the intersection of Crown Valley Parkway and Pacific Island Dr 183 Comment
  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
  IRVC24227  Garrya flavescens Fred M. Roberts, Gordon A. Marsh, Karlin G. Marsh 1985-10-1 2287 Orange Santa Ana Mountains; Silverado Canyon, Silverado Truck Trail, 1.5km NW Shrewsbury Spring. Peninsular Ranges 766 Comment
  UC1080593  Garrya flavescens E. K. Balls and P. C. Everett 1957-11-25 22847 Orange 1.1 mi e Silverado 883 Comment
  UC1122672  Garrya flavescens H. E. Norton 1931-3-21 47 Orange Bedford Peak; Corona Quad. 1066 Comment
  CAS-BOT-BC402198  Garrya flavescens subsp. pallida R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49700 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA303834  Garrya flavescens var. pallida Jim R. Shevock 1972-1-16 1334 Orange Silverado Canyon. 610 Comment
  RSA761932  Gastridium phleoides Suzanne Espino 2005-4-26 3 Orange Santa Ana Mountains, Caspers Wilderness Park, East Ridge Trial. Near water tank at E. 168 Comment
  SD245211  Gastridium phleoides R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49596 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  UCR191247  Gastridium ventricosum A. C. Sanders 2008-4-29 35131 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  CDA5146  Gaura coccinea Margaret Bellue, Andreas, E. L. Paddock 1943-8-31 Orange Brea Road, 1 mile north of Fullerton. 0 Comment
  SEINET10728264  Gazania David B. Dunn 1971-8-13 Dunn 18119 Orange Cultivated plants vicinity of Laguna Beach. Comment
  RSA718969  Gazania linearis Fred M. Roberts, Robert L. Allen 2006-10-8 6411 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  UCR242702  Gazania linearis Fred M. Roberts 2012-5-10 7580 Orange SAN JOAQUIN HILLS: Buck Gully, south tributary, north slope Pelican Hill, just north of Pelican Hills Drive, 0.7 km N Pelican Hill summit 154 Comment
  POM8756  Geranium carolinianum P. A. Munz, R. D. Harwood 1920-4-24 3791 Orange Santa Ana Mountains, Sierra [Freemont] Canyon 366 Comment
  SD232261  Geranium carolinianum Scott D. White, Brian Leatherman 1997-5-6 5037 Orange Santa Ana Mtns.: Santiago Canyon area. Unnamed tributary to Santiago Ck. Flowing from the SW, directly west of Pancho Cyn. Lomas de Santiago S 179. 366 Comment
  UCR191442  Geranium carolinianum A. C. Sanders, Fred M. Roberts 2008-4-8 34724 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  RSA542473  Geranium dissectum Fred M. Roberts 1988-3-15 3852 Orange Rancho Mission Viejo: Verdugo Canyon, 2.6 km ENE Point Rancho Survey Mark 149 Comment
  CAS-BOT-BC229038  Geranium incanum var. multifidum R. E. Riefner, Jr. 2007-4-28 07 -189 Orange City of Newport Beach, Newport Bay, North Star Beach, vicinity of Morning Star Ln. 1 Comment
  UCR241096  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-30 12- 285 Orange South Coast, City of Costa Mesa, Talbert Regional Park, general vicinity of Balboa Blvd. and 19th St. 5 Comment
  RSA797024  Geranium incanum var. multifidum R. E. Riefner Jr. 2007-4-28 7 -189 Orange City of Newport Beach, Newport Bay, North Star Beach, vicinity of Morning Star Ln. 2 Comment
  POM10159  Gilia angelensis P. A. Munz, R. D. Harwood 1920-4-24 3766 Orange Santa Ana Mountains, Sierra [Freemont] Canyon 366 Comment
  POM6410  Gilia angelensis P. A. Munz, L. T. Street, G. Williams 1919-5-3 2628 Orange Santa Ana River Canyon. Comment
  RSA636  Gilia angelensis J. T. Howell 1928-2-25 836 Orange Near Bee Canyon, Rancho Santa Ana. 152 Comment
  UCR192503  Gilia angelensis A. C. Sanders, Fred M. Roberts 2008-3-25 34550 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA139632  Gilia angelensis John Ingram 1960-3-14 246 Orange 2 blocks east of Knotts Berry Place, on La Palma Avenue, Buena Park. Comment
  RSA758897  Gilia capitata A. C. Sanders, T. B. Salvato 2008-5-13 35339 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
  RSA698350  Gilia multicaulis R. H. McArthur s.n. Orange Gypsum Canyon. Comment
  UCD132374  Glebionis coronaria B. Pitzer 1996-4-30 2763 Orange Upper Newport Bay: California Department Fish and Game Ecological Reserve, off (W of) Jamboree Rd. 6 Comment
  UCSB48124  Glebionis coronaria Roberts, Fred 1981-4-11 Orange Highway 74: 5.2km E San Juan Capistrano, near crossing of San Juan Creek 52 Comment
  UCR130350  Gloriosa superba A. C. Sanders, Mark A. Elvin 2003-10-12 27330 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  RSA7326  Glycyrrhiza lepidota E. R. Johnson 1933-7-6 5169 Orange 1/2 mile south of Mexican houses, Rancho Santa Ana 122 Comment
  SEINET7067531  Gnaphalium californicum 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
  UCR103790  Gnaphalium canescens subsp. microcephalum Scott D. White 1997-2-19 4697 Orange Santa Ana Mtns, above Modjeska Canyon; proposed water tank site 488 Comment
  IRVC15124  Gnaphalium microcephalum var. microcephalum A. S. Boughey 1968-4-16 225 Orange Santiago Canyon/Lower Modjeska Cyn, Fleming Property. Santa Ana Mountains Comment
  POM12445  Gnaphalium palustre P. A. Munz 1922-9-2 6355 Orange Ponds in Laguna Canyon 46 Comment
  IRVC25388  Gnaphalium stramineum Fred M. Roberts 1987-4-3 3351 Orange San Joaquin Hills; Irvine; central Shady Canyon, 2.9km NE Signal Hill. Central coastal 107 Comment
  UCR190987  Gnaphalium stramineum A. C. Sanders, Fred M. Roberts 2008-4-22 34991 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
  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
  CDA6065  Gnaphalium stramineum Jas. E. Wilcox 1950-2-12 Orange Santa Ana Canyon; Lemon Grove, Peralta. 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
  RSA698230  Godetia bottae Minor Warne 1934-5-19 s.n. Orange Trabuco. Comment
  RSA698236  Godetia purpurea Kenneth Beard s.n. Orange East of Irvine Park. 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
  UCR113450  Grindelia camporum var. bracteosa R. E. Riefner Jr. 2000-7-8 20- 626 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, on ridgetop overlooking W fork of Fremont Canyon, east of Main Divide Road along the powerline 396 Comment
  UCR233742  Grindelia camporum var. bracteosa Fred M. Roberts 2008-6-26 7059 Orange Santa Ana Mtns. Foothills, Lomas de Santiago; Loma Ridge along West Loma Ridge Road, c. 1 km north of Haul Road, 2.5 km NNW of Bee Peak, Irvine Ranch Land Conservancy 382 Comment
  CAS-BOT-BC305203  Grindelia hirsutula J. T. Howell 1931-6-1 6624 Orange San Clemente Comment
  CAS-BOT-BC305205  Grindelia hirsutula Carl B. Wolf 1936-7-8 8101 Orange Coast Highway, Western end of Newport Bay 9 Comment
  UC1929665  Grindelia hirsutula Scott D. White, Michael Honer 2003-6-19 9575 Orange SOUTWESTERN SANTA ANA MTN. FOOTHILLS: Ranch Mission Viejo. Steep mountain slopes south of San Juan Ck and west of Tramps Cyn. Comment
  UCR7735  Grindelia robusta P. Sunderman 1968-5-11 s.n. Orange W of U.S. 101, immediately south of Corona del Mar. 30 Comment
  UCR46575  Gutierrezia bracteata B. G. Pitzer 1986-10-21 0346 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, c. 10 mi east of Santa Ana, in hills N and east of South Coast Gun Club on Jeffrey Road in Hicks Canyon 183 Comment
  POM359185  Gutierrezia californica F. R. Fosberg 1931-6-21 749 Orange Lower Santiago Canyon. Comment
  RSA542435  Gutierrezia californica Fred M. Roberts, K. Keane 1988-5-26 4006 Orange Rancho Mission Viejo: tributary to Trampas Canyon, along Christianitos Raod, 2.4km ESE Viejo Survey Mark. 135 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
  CAS-BOT-BC302136  Gutierrezia sarothrae John Thomas Howell 1927-9-24 3111 Orange Hills on n. side of Santa Ana Canon [Canyon] 213 Comment
  RSA753035  Haplopappus menziesii A. C. Sanders, Fred M. Roberts 2008-9-18 36078 Orange Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 320 Comment
  UCR146530  Haplopappus menziesii Scott D. White 2004-7-7 10600 Orange South Coast, Laguna Niguel, along Pacific Island Drive 122 Comment
  LA202463  Haplopappus palmeri subsp. pachylepis Lawrence M. Booth; 8853 Orange Newport Beach 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
  UCR132982  Harpagonella palmeri Adrian Wolf 2000-4-10 451 Orange Santa Ana Mtns., North Ranch Policy Plan Area, North Baker Canyon Road 351 Comment
  RSA232067  Hazardia squarrosa var. grindelioides C. W. Tilforth 1972-8-20 624 Orange Along County Rd. S19, between Cooks corner and O'Neil Park Comment
  RSA871  Hazardia squarrosa var. grindelioides J. T. Howell 1927-10-22 758 Orange Bluffs near eastern boundary, Rancho Santa Ana 213 Comment
  UC1424954  Hazardia squarrosa var. grindelioides C. W. Tilforth 1972-8-20 624 Orange County Rd. S 19 between Cooks Corner and O'Neill Park Comment
  UCR218455  Hedera canariensis Robert DeRuff 2008-1 134 Orange South Coast, Upper Newport Bay, between Mariner's Drive and North Star Beach 6 Comment
  RSA732000  Hedypnois cretica A. C. Sanders, Fred M. Roberts 2008-4-22 35059 Orange Penisular Range; 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 mi. WSW of Silverado. 493 Comment
  UCR79270  Hedypnois cretica Steve Boyd, T. S. Ross 1992-5-20 7462 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
  UC537024  Helianthus annuus Lawrence M. Booth 1932-6-29 1230 Orange Newport Bay Comment
  CAS-BOT-BC305442  Helianthus annuus E. L. Paddock 1943-5-29 12745 Orange South Pacific Electric Railway, 1/4 mile northwest of Brea-Olinda crossing Comment
  IRVC779  Helianthus annuus L. McCabe 1965-5-2 Orange Comment
  UC774875  Helianthus ciliaris E. L. Paddock 1941-8-1 Orange 2 mi e Brea; Graham-Loftus property Comment
  RSA7440  Helianthus gracilentus C. B. Wolf 1933-8-24 5388 Orange Summit of Santiago Peak, Santa Ana Mountains. 1707 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
  RSA92427  Helianthus gracilentus F. W. Peirson 1923-5-5 4147 Orange Trabuco Canyon, Santa Ana Mts. 549 Comment
  RSA0016430  Helianthus nuttallii subsp. parishii F. W. Peirson 1924-10-19 5247 Orange Wintersberg Comment
  CDA20834  Heliotropium curassavicum P. Akers 2006-3-25 PA 8 -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
  IRVC29807  Heliotropium curassavicum Laura D. Lyons, Mark A. Elvin 2006-9-23 421 Orange San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; SW edge, along San Diego Creek, N of University Drive, E Hwy 73. Southern Coastal 2 Comment
  UCSB48091  Heliotropium curassavicum Roberts, Jr., Fred 1981-5-2 Orange Mission Viejo: Camino Capistrano, 1.7km N Crown Valley Parkway 49 Comment
  RSA5855  Heliotropium curassavicum var. oculatum C. B. Wolf 1932-6-28 3788 Orange Bryant Ranch, near fence., 100 ft. south of NW corner of NW 1/4 of S.E. 1/4 of sect 27. 9 Comment
  RSA202173  Hemizonia australis L. M. Booth 1932-6-7 1169 Orange Newport Lagoon. Comment
  RSA734120  Hemizonia fasciculata A. C. Sanders 2008-4-29 35142 Orange Peninsular Range;Santa Ana Mtns.: Lomas de Santiago, western end of Loma Ridgeon road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  RSA750921  Hemizonia fasciculata A. C. Sanders, Fred M. Roberts 2008-7-3 35705 Orange Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  UCR131870  Hemizonia fasciculata J. Mallory, V. McCoy 1995-7-3 6454- 73 Orange Santa Ana Mountains: N-facing slope in Santiago Canyon, c. 0.5 mi. east of Santiago Canyon Rd; near Irvine Park 200 Comment
  UCR192078  Hemizonia fasciculata A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35279 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  UCR209334  Hemizonia fasciculata Fred M. Roberts 2008-7-10 7064 Orange South Coast, Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8 km west-northwest of Marine Institute, Dana Point Harbor 65 Comment
  RSA806  Hemizonia laevis J. T. Howell 1927-7-15 406 Orange Santa Ana River, Rancho Santa Ana [Botanic Garden] 152 Comment
  RSA594814  Hemizonia paniculata Fred M. Roberts 1993-6-30 4886 Orange Aliso-Woods Regional Park: Temple Hill, adjacent to Multon Meadows Park, 0.7 km SSE Close Survey Marker. 253 Comment
  SEINET3071661 Image available Hemizonia parryi subsp. australis D. D. Keck 1933-9-29 2537 Orange Seal Beach Comment
  UCSB52949  Hesperocnide tenella Roberts, Fred; Allen, R. 1983-3-27 Orange Dana Point Headlands: above Dana Strand Beach, 0.9km W Dana Point Harbor; 1.0km SW Richard Henry Dana School 40 Comment
  RSA0072404  Heteromeles arbutifolia Fred M. Roberts, Robert L. Allen 2004-1-16 6020 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.56 km SSW Gato Gate and 0.15 km W of Cristianitos Rd. 92 Comment
  RSA658198  Heteromeles arbutifolia T. A. Daubert 1991-5-26 657 Orange Tucker Wildlife Sanctuary, Modjeska Canyon, fire road. Comment
  UCR223436  Heteromeles arbutifolia Dick Newell, Don Millar 2011-2-8 056 Orange Peninsular Range; Santa Ana Mtns., Black Star Coal Mine above Fremont Canyon, along Coal Rd. 475 Comment
  RSA0075822  Heterotheca grandiflora A. C. Sanders, Fred M. Roberts 2008-5-6 35236 Orange Santa Ana Mtns.: Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir. 280 Comment
  UCR100186  Heterotheca grandiflora Scott D. White 1996-12-20 4639 Orange Santa Ana Mountains, above Modjeska Canyon; proposed water tank site 488 Comment
  CAS-BOT-BC318904  Heterotheca grandiflora J. Ewan 1931-10-3 s.n. Orange 1/2 mile above La Vida Soda Springs, Carbon Canyon Comment
  RSA539418  Heterotheca sessiliflora subsp. echioides Fred M. Roberts, D. Willick 1988-9-16 4135 Orange Peralta Hills: Oak Canyon Nature Center, Upper Walnut Canyon, 1.1 km N Robbers Peak 177 Comment
  IRVC18573  Heterotheca sessiliflora subsp. fastigiata Karlin G. Marsh 1980-8-13 Orange S of Trabuco Canyon, Sect. 12, Hinricks Parcel. Santa Ana Mountains Comment
  CAS-BOT-BC318988  Heterotheca sessiliflora var. echioides John Thomas Howell 1927-9-24 3109 Orange North side of Santa Ana Canyon 213 Comment
  CAS-BOT-BC55402  Hirschfeldia incana Ira L. Wiggins 1966-3-22 20556 Orange Floor of Silverado Canyon about 0.5 mile below entrance to Cleveland National Forest. Comment
  UCSB48229  Hirschfeldia incana Roberts, Fred 1981-7-8 Orange Rancho Mission Viejo: Calif. Rte. 74, 5.2 km ENE San Juan Capistrano by road 100 Comment
  RSA38433  Hoffmannseggia glauca E. L. Paddock 1946-6-14 11519 Orange Rancho Santa Ana, along AT & SF Ry., above old pear orchard. Area of approximately 100 sq. ft. 121 Comment
  RSA131403  Holodiscus discolor E. K. Balls 1958-6-27 23284 Orange 5 miles southeast from Silverado (Gate), Silverado Canyon 1098 Comment
  RSA488126  Holodiscus discolor Fred M. Roberts 1985-7-26 2091 Orange Main Divide Truck Trail, Upper Horsethief Canyon watershed, 2.3 km SE Trabuco Peak 1223 Comment
  RSA6142  Holodiscus discolor E. R. Johnson 1933-6-22 5000 Orange 1/4 mile east and 1/2 miles south of northwest corner of Rancho Santa Ana in Sect. 16 305 Comment
  RSA699267  Holodiscus discolor R. H. McArthur 1934-4-28 s.n. Orange Ladd Canyon Comment
  CAS-BOT-BC150010  Holodiscus discolor var. discolor P. C. Everett 1935-6-18 7221 Orange Santa Ana Mts., summit of Santiago Pk. 1731 Comment
  RSA542404  Holodiscus discolor var. franciscanus Bernard Jaroslow 1989-5-29 B- 24 Orange Along trail just below truck trail, in the canyon of Upper Santiago Creek, above deserted mines Comment
  RSA725575  Holodiscus microphyllus Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6539 Orange Upper Fremont Canyon, 5.3 km ENE Irvine Lake Spillway and 1.6 km W Hidden Ranch. 738 Comment
  RSA608538  Hordeum depressum D. E. Bramlet 1996-4-20 2458 A Orange Marsh adj. to Upper Newprot Bay, approx. 122m southeast of the end of University Dr. and 15.2m west of the Delhi channel., UTM 37 23 830mN, X 4 18 180m E 1 Comment
  RSA678515  Hordeum depressum Valerie L. Soza, Kenneth Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1132 Orange Seal Beach U. S. Naval Weapons Station, southeastern edge of Seal Beach National Wildlife Refuge. Northern edge of Huntington Harbor. 3 Comment
  RSA701429  Hordeum depressum Rankin s.n. Orange Laguna Beach 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
  UCR267436  Hordeum intercedens D. E. Bramlet 2001-5-15 3143 Orange Santa Ana Mtns. Foothills, upper watershed of Deep Canyon, 1300 ft. east of Krum Reservoir, c. 2 miles SE of San Juan Capistrano, 1200 ft. south of Avenida Placida, west of the Prima Deshecha landfill 201 Comment
  CAS-BOT-BC289363  Hordeum murinum subsp. glaucum Ira L. Wiggins 1966-2-19 20453 Orange In Carbon Canyon near Orange County Survey bench mark RCE 7872 Comment
  CAS-BOT-BC289365  Hordeum murinum subsp. glaucum Ira L. Wiggins 1966-3-19 20537 Orange Irvine Ranch, southeast of U.C. Irvine Comment
  RSA55  Hordeum murinum subsp. leporinum J. T. Howell 1928-3-17 869 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  CAS-BOT-BC537312  Horkelia cuneata var. puberula Philip A. Munz 1936-4-20 14606 Orange Mt. Olympus, Laguna Beach 152 Comment
  RSA759250  Hulsea heterochroma Robt Allen, G. Victor Leipzig 2008-6-20 s.n. Orange Upper Silverado Canyon, along Maple Springs Truck Trail, 5.7 road miles up from Maple Springs Forest Gate, 0.8 road miles down from junction with Main Divide Truck Trail. Southwestern end of short road spur. 1313 Comment
  RSA697416  Hymenolobus procumbens Elisabeth Norland 1929-2-16 3 Orange Cypress. Comment
  RSA769302  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10 -52 Orange City of San Juan Capistrano, along McKraken View Trail at San Juan Creek Rd., E of I-5 Freeway. 51 Comment
  RSA743384  Hypochaeris glabra Fred M. Roberts 2008-5-27 7008 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5 km W Marine Institute (Dana Point Harbor). 75 Comment
  RSA747712  Hypochaeris glabra Fred M. Roberts 2008-4-9 6867 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 52 Comment
  UCR190982  Hypochaeris glabra A. C. Sanders, Fred M. Roberts 2008-4-22 34998 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
  RSA39336  Hypochaeris radicata E. L. Paddock 1943-5-26 12742 Orange Near Santa Fe Railway 1/8 mile east of Northam Station. Buena Park. Comment
  UCSB52912  Hypochaeris radicata Roberts, Fred; Marsh, K. 1983-5-13 Orange Laguna Beach; Sycamore Hills, central ridge, 1.3 km. NE jct. El Toro and Laguna canyon Rds.; 5.6 km. ESE Signal Peak 155 Comment
  UCR271002  Isocoma menziesii Mitch Provance, Travis Kegel 2016-4-8 416- 61 Orange Coastal Regions of Southern California, Newport Beach, W of the W end of 16th Street, and E of the Banning Oil Fields 32 Comment
  RSA184129  Isocoma menziesii var. menziesii I. L. Wiggins 1965-10-27 20305 Orange Roadside and along creek bank, just SW of Los Angeles Co. line, on Brea Canyon Rd. Comment
  CAS-BOT-BC311672  Isocoma menziesii var. sedoides David D. Keck 1932-9-30 1902 Orange 2 mi. W. of Laguna Beach Comment
  RSA743473  Isocoma menziesii var. sedoides Fred M. Roberts 2008-10-9 7123 Orange Dana Point: Dana Point Headlands, CNLM Preserve, at base of cliff adjacent to Dana Strands Beach, 0.8km WNW Marine Institute (Dana Point Harbor). 3 Comment
  CAS-BOT-BC311732  Isocoma menziesii var. vernonioides L. R. A. 1901-6-1 1783 Orange San Joaquin Hills Comment
  OBI47601  Isocoma menziesii var. vernonioides B. Pitzer & L. F. LaPre, L. F. LaPre 1986-10-20 s.n. Orange Summit of Hicks cyn on a private road (continuation of Jeffrey rd) ca. 2.4 mi above the gun club. (Near 117d 43'W, 33d 44'N 274 Comment
  POM201745  Isocoma menziesii var. vernonioides L. M. Booth 1932-6-29 1225 Orange Newport Bay Comment
  POM361284  Isocoma menziesii var. vernonioides Anstruther Davidson 1917-08 3268 Orange Near Laguna Beach. Comment
  RSA264440  Isocoma menziesii var. vernonioides C. W. Tilforth 1976-10-21 1225 Orange Slopes above Santa Ana River Canyon on Rancho Santa Ana. Comment
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Mar 18 2011
  RSA573431  Isocoma menziesii var. vernonioides Steve Boyd, Tim Ross 1994-9-14 8344 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
  SBBG62842  Isocoma menziesii var. vernonioides M. N. Ackley -Sep-1928 428 Orange Sunset Beach 8 Comment
  SD136910  Isocoma menziesii var. vernonioides Steve Boyd, Tim Ross 1994-9-14 8343 Orange Southern Santa Ana Mountains,San Mateo Canyon Area,Lucas Canyon trailhead at Forest Service Road 7S06 on ridge dividing Aliso and Verdugo Cany 509 Comment
  UCSB48038  Isocoma menziesii var. vernonioides Roberts, Jr., Fred 1981-9-26 Orange Irvine Ranch; Pacific Coast Highway, 0.9 km. SE El Moro School near mouth of Moro Cyn. 15 Comment
  RSA757058  Isolepis cernua O. F. Clarke, Roger E. Reinke 2004-11-14 s.n. Orange Newport Back Bay 3 Comment
  IRVC308  Isomeris arborea J. Schram 1965-4-30 Orange Corona del Mar, Corona Highlands gully. Newport Beach Comment
  UC1090402  Isomeris arborea Milo S. Baker 1958-5-20 13307 Orange Newport Bay Comment
  UC536931  Isomeris arborea Lawrence M. Booth 1932-5-12 1045 Orange Newport Bay Comment
  UCR98234  Isomeris arborea B. G. Pitzer 1997-4-15 3133 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
  UCR220031  Iva hayesiana Rebecca T. Vo 2010-6-5 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  UCR246390  Iva hayesiana R. E. Riefner Jr. 2013-8-30 13- 206 Orange South Coast, city of Huntington Beach, north of Pacific Coast Hwy along the Santa Ana River Trail, west side Santa Ana River 7 Comment
  UCR239831  Jaumea carnosa O. F. Clarke 2004-6-23 s.n. Orange South Coast, Newport Back Bay, just south of the Muth Interpretive Center 15 Comment
  PASA1561  Jaumea carnosa Frank W. Peirson 1924-8-29 Orange 3 miles from Balboa on road inland along creek Comment
  CAS-BOT-BC101960  Juglans californica Carl B. Wolf 1936-7-8 8103 Orange W. side of Durant St., Santa Ana 30 Comment
  RSA0043360  Juglans californica Fred M. Roberts 2013-8-8 7802 Orange Peninsular Ranges. SANTA ANA MTNS.: Lower Silverado Canyon along Silverado Creek on north side of Silverado Canyon Road, 0.8 km ENE Silverado School and 1.5 km up stream Black Star Road crossing. 325 Comment
  UCR247895  Juglans californica Fred M. Roberts 2013-8-9 7802 Orange Peninsular Ranges, SANTA ANA MTNS.: Lower Silverado Canyon along Silverado Creek on north side of Silverado Canyon Road, 0.8 km ENE Silverado School and 1.5 km up stream Black Star Road crossing. 325 Comment
  RSA614279  Juncus acutus subsp. leopoldii L. C. Wheeler 1932-6-25 869 Orange Newport Bay: Inland arm of.. Sea level. Comment
  UC1280019  Juncus acutus subsp. leopoldii Peter H. Raven 1957-9-28 11401 Orange just n Huntington Beach Comment
  RSA0014067  Juncus arcticus var. balticus Fred M. Roberts, R. E. Riefner 2010-5-30 7021 Orange Lomas de Santiago: Loma Ridge, Hanging Man s Tree Cyn., along Hanging Man s Tree Cyn. Rd., c.a. 0.4km W Santiago Cyn. Rd., and 1.2 km N Bolero Lookout. 372 Comment
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Sep 21 2020
  RSA552947  Juncus balticus Fred M. Roberts, R. E. Riefner 1989-5-2 4328 Orange Aliso-Wood Canyons Regional Park: Lower Wood Canyon, 3.5 kilometers SSE Multon Peak. 30 Comment
  UCR157700  Juncus bufonius Adrian Wolf 1998-5-27 342 Orange South Coast, Newport Slough, south of oil fields, between Huntington Beach, Costa Mesa and Newport Beach, just south of the channelized mouth of the Santa Ana River 2 Comment
  RSA542516  Juncus bufonius Fred M. Roberts 1987-3-31 3300 Orange Lomas de Santiago: Lomas [Loma] Ridge, upper Serrano Canyon, east fork, reservoir, 2.7 kilometers SE Bolero Lookout. 350 Comment
  UCR217667  Juncus macrophyllus Fred M. Roberts, R. E. Riefner Jr. 2008-5-30 7024 Orange South Coast, Lomas de Santiago, Loma Ridge, Hanging Man's Tree Canyon, along Hanging Man's Tree Canyon Road, c. 0.4 km west of Santiago Canyon Road and 1.23 km north of Bolero Lookout 372 Comment
  RSA368294  Juncus oxymeris F. R. Fosberg 1931-6-21 S- 5152 Orange Silverado Canyon. Santa Anita Mts. Comment
  UCR247891  Juncus patens Fred M. Roberts 2012-7-18 7662 Orange SAN JOAQUIN HILLS: Newport Beach, Buck Gully, along Buck Gully Trail, about 0.7 km from the north terminus of Poppy Street and 1.8 km WNW summit of Pelican Hill 52 Comment
  RSA699683  Juncus rugulosus Keith E. Hoffmaster 1935-4-14 s.n. Orange Trabuco creek., 1/4 mi. above CCC camp at Trabuco Oaks, Santa Ana Mts. Comment
  UCR193924  Juncus textilis A. C. Sanders, Fred M. Roberts 2008-7-16 35855 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  RSA104  Juncus torreyi J. T. Howell 1927-7-14 399 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  RSA17462  Juncus xiphioides Percy C. Everett 1936-9-19 8272 Orange Santa Ana Mountains, Silverado Canyon. 0.7 mile E of Shadybrook Resort. 701 Comment
  RSA21231  Juniperus californica E. R. Johnson 1937-3-28 8502 Orange 4 9/10 mi. E. of San Juan Capistrano on No. side of Ortega Highway. Comment
  RSA702804  Juniperus californica D. E. Bramlet, F. M. Roberts 2003-3-27 3360 Orange Donna O Neill Reserve. S facing slope of tributary to Cristianitos Cyn., 335 m W of Cristianitos Rd. & 428m NW Ford Rd. 136 Comment
  SEINET10932779  Juniperus chinensis Carlyle Wilson Bennett, David B. Dunn; Chester T. Dziekanowski 1976-7-21 Bennett 438 Orange Cultivated plants collected in and around the condominium-Pacific Island Estates in Laguna Hills; some native shrubs, etc. 150 Comment
  RSA293256  Keckiella antirrhinoides D. C. Michener 1980-6-5 3666 Orange Santa Ana Mtns near El Cariso. Steep slopes at head of Dickey Canyon (Alberhill Quadrangle) with Asenostoma. 900 Comment
  RSA424818  Keckiella antirrhinoides Albert J. Perkins 1916-6-15 s.n. Orange Santa Ana. Comment
  UC1018202  Keckiella antirrhinoides J. Warren 1952-4-5 Orange Santa Ana Canyon Comment
  CAS-BOT-BC235722  Keckiella cordifolia E. K. Balls 1958-6-27 23283 Orange 5 mi. se. from Silverado (Gate) Silverado Canyon, Santa Ana Mts. 1097 Comment
  NY790204  Keckiella cordifolia S. McCoy 1932-6-3 243 Orange Near Brea Comment
  RSA401708A  Keckiella cordifolia N. C. Cooper 1949-5-1 3938 Orange San Juan Canyon 762 Comment
  SBBG47452  Keckiella cordifolia N. C. Cooper 1944-6-4 1340 Orange San Juan Cyn 304 Comment
  RSA542498  Keckiella ternata subsp. ternata Fred M. Roberts Jr., Richard E. Riefner 1988-7-19 4123 Orange Costa Mesa; Fairview Park, Just west of end of Canyon Drive, 0.1 km W Canyon School. 24 Comment
  RSA734810  Koeleria macrantha A. C. Sanders, Fred M. Roberts 2008-3-25 34579 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
  RSA753162  Koeleria macrantha D. E. Bramlet 2008-4-28 4245 A Orange East Fork of Upper Weir Cyn, 1.2km east of the main Cyn. & 91m W of the upper boundary of Gypsum Cyn. 409 Comment
  CAS-BOT-BC271300  Koeleria pyramidata Le Roy Abrams 1901-6-1 1832 Orange Summit of Santiago Pk. Comment
  CDA35533  Koelreuteria bipinnata D. G. Kelch, Mark Elvin 2006-12-9 6 .556 Orange Irvine. University Dr along tidal creek just E of I-73. 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
  UCR186506  Koelreuteria bipinnata T. B. Salvato, Katie Kurtz, Mitch Provance 2006-10-15 1903 Orange South Coast, Irvine, San Diego Creek flood control channel, between Campus Drive and Michelson Drive 6 Comment
  RSA696161  Lactuca scariola Keith E. Hoffmaster 1927-10 s.n. Orange Santa Ana Comment
  RSA703140  Lactuca serriola Fred M. Roberts, Art Davenport 2003-9-11 6016 Orange Rancho Mission Viejo: Donna O' Neill Land Conservancy. Cristianitos Cyn., 0.79 km N Sycamore Gate 0.23 km w of Crisianitos Road. 126 Comment
  RSA759155  Lactuca serriola A. C. Sanders, Fred M. Roberts 2008-6-17 35457 Orange Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  UC912645  Lamarckia aurea Herbert L. Mason 1926-4-25 2938 Orange Laguna Canyon Comment
  UCD63304  Lamarckia aurea W. W. Robbins 1931-5-11 2202 Orange Santa Ana. Comment
  UCSB52935  Lastarriaea coriacea Roberts, Fred 1984-5-1 Orange Wagon Wheel Regional Park; Wagon Wheel Canyon; 3.1km NE Median Rancho Survey Mark; 1.2km NNW BM 422 165 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
  HSC5147  Lasthenia californica S. M. Clapp 1966-4-10 46 Orange 10 mi. into Black Star Canyon, near the summit 244 Comment
  IRVC553  Lasthenia californica R. Hobsin 1965-4-10 Orange Back Bay near end of bay. Newport Beach Comment
  RSA695661  Lasthenia californica R. H. McArthur 1934-3-25 s.n. Orange Limestone Canyon Comment
  RSA796  Lasthenia coronaria J. T. Howell 1928-2-25 850 Orange Nolina Canyon, Rancho Santa Ana. 152 Comment
  OBI81435  Lasthenia glabrata Unknown 2013-3-10 13 -39 Orange City of Lake Forest, along El Toro Rd. at Destry Rd. 211 Comment
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Apr 7 2021
  RSA3172  Lasthenia glabrata subsp. coulteri C. B. Wolf 1932-3-8 2691 Orange Sunset Beach, near S city limits 2 Comment
  SD73477  Lasthenia glabrata subsp. coulteri C. B. Wolf 1935-3-24 6295 Orange 1.0 mile north of Buena Park. Comment
  RSA3186  Lasthenia gracilis C. B. Wolf 1932-3-8 2677 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  UCR106311  Lasthenia gracilis B. G. Pitzer, M. Georgiady 1997-4-5 3095 Orange San Joaquin Hills, Crystal Cove State Park, portion across highway on the beach, bluffs immediately above beach and adjacent terraces for southeast end of park. 24 Comment
  UCR203988  Lasthenia gracilis Fred M. Roberts 2008-3-12 6732 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
  RSA785201  Lathyrus vestitus Dick Newell, Don Millar 2010-4-20 016 Orange top of Serrano Ridge, 1 km west of the Nix Center/Laguna Canyon Rd. 229 Comment
  RSA405728  Lathyrus vestitus subsp. alefeldii H. L. Bauer 1929-4-20 s.n. Orange Trabuco Canon. Comment
  RSA12902  Lathyrus vestitus subsp. alefeldii P. C. Everett 1935-2-10 6292 Orange At base of West Ladd Trick Trail, mouth of Baker Canyon, Santa Ana Mountains 335 Comment
  IRVC11716  Lathyrus vestitus subsp. laetiflorus B. T. Gittins 1963-4-18 171-D Orange Silverado Canyon. Santa Ana Mountains Comment
  RSA405709  Lathyrus vestitus subsp. laetiflorus E. Crow 1929-2-22 164 Orange Gypsum Canyon, Santa Ana Mountains. Near Corona. Comment
  RSA518451  Lathyrus vestitus subsp. laetiflorus Dorothy Tilforth, C. W. Tilforth 1977-3-6 1253 Orange Small canyon W of Gypsum Canyon, S side of Santa Ana River 152 Comment
  IRVC15053  Lathyrus vestitus subsp. laetiflorus Gordon A. Marsh, K. G. Marsh 1977-5-28 Orange Selva Road. Laguna Niguel Comment
  IRVC17039  Lathyrus vestitus subsp. laetiflorus G. Howard 1965-3-25 Orange [Newport] Back Bay. Newport Beach Comment
  RSA542543  Lathyrus vestitus subsp. laetiflorus Fred M. Roberts, T. Sholars, B. Stechmeyer 1988-3-29 3887 Orange Santa Ana Mountains: Main Divide Truck Trail, 1.0 km by road NW Blue Jay Campground, c.a. 2.1 km ESE Los Pinos Peak. 1024 Comment
  RSA17019  Layia platyglossa subsp. campestris Percy C. Everett 1935-4-15 6462 Orange 8/10 mile E of Atwood on S side of Santa Fe RR. 107 Comment
  RSA723966  Lemna gibba R. E. Riefner 2005-10-27 05 -730 Orange City of Huntington Beach, Huntington Central Park near Goldenwest St. 1 Comment
  CAS-BOT-BC527309  Lemna trisulca John Thomas Howell 1927-7-15 2776 Orange Santa Ana River bottom, Santa Ana Canyon 152 Comment
  RSA0054938  Leonotis leonurus R. Engel 1934-10-10 s.n. Orange Santa Ana. Comment
  IRVC18681  Lepechinia cardiophylla Karlin G. Marsh 1981-5-1 s.n. Orange Santa Ana Mtns: Bald Peak Peninsular Ranges 1159 Comment
  RSA741723  Lepechinia cardiophylla R. E. Riefner Jr. 2008-3-21 8 -59 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fremont Canyon, Windy Ridge S to W fork canyon habitat. 463 Comment
  RSA732067  Lepidium nitidum A. C. Sanders, Fred M. Roberts 2008-3-25 34515 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  CSUSB545  Lepidium nitidum Oscar F. Clarke 1966-3-19 S. N. Orange Irvine Ranch, east of University of Calif. at Irvine, Newport Beach Comment
  RSA184170  Lepidium nitidum I. L. Wiggins 1966-3-5 20511 Orange 1/2 mile W of El Toro along Hwy 18 Comment
  UCR173877  Lepidium nitidum var. nitidum Scott D. White, Michael Honer 2003-3-27 8861 Orange Peninsular Ranges/Santa Ana Mtns, Canyon bottom and W-facing slopes above Canada Gobernadora 183 Comment
  CAS-BOT-BC12775  Lepidium oxycarpum Carl B. Wolf 1935-3-24 6296 Orange 1 mile north of Buena Park (valley to west of west Coyote Hills). 53 Comment
  RSA734768  Lepidium strictum A. C. Sanders, T. B. Salvato 2008-5-13 35331 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
  UC537122  Lepidium virginicum Lawrence M. Booth 1932-5-24 1098 Orange Newport Lagoon Comment
  UCR222386  Lepidium virginicum var. robinsonii Mark A. Elvin 2003-1-26 2245 Orange South Coast, Irvine, UC Irvine Open Space Preserve, NE side, between core of UCI campus (E Peltason Dr.) and Hwy 73 69 Comment
  POM50054  Lepidospartum squamatum Helen D. Geis 1902-1 576 Orange Santiago Canyon. Comment
  RSA731934  Leptochloa fusca subsp. uninervia Fred M. Roberts, Sandy Leatherman 2007-11-27 6676 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. ca. 0.3 km S Fairmont Blvd. 118 Comment
  UC537285  Leptochloa uninervia Lawrence M. Booth 1932-7-18 1262 Orange Costa Mesa Newport Bay Comment
  UCR192117  Leptodactylon californicum A. C. Sanders, Fred M. Roberts, Amber O'Neal, D. E. Bramlet 2008-5-9 35302 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  RSA574  Leptosiphon androsaceus J. T. Howell 1928-4-7 905 Orange Botany Garden, Rancho Santa Ana. [original location] Comment
  RSA72060  Leptosiphon floribundus Robert L. Dressler 1949-4-24 755 Orange Lower San Juan camping grounds. Comment
  SD251267  Leptosiphon floribundus R. F. Thorne 1977-11-21 49985 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp. Comment
  SBBG128690  Leptosiphon floribundus subsp. floribundus R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49714 Orange Bedford Truck Trail, ca. 0.8 km below jct with Main Divide Truck Trail; Santa Ana Mtns Comment
  POM10433  Leptosiphon floribundus subsp. glaber H. M. Hall s.n. Orange Santa Rosa Mts. Comment
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Mar 3 2013
  RSA587876  Leptosiphon liniflorus Fred M. Roberts 1990-5-9 4625 Orange Rancho Mission Viejo; Christianitos Canyon, TRW Lease Holding, 4.3 km NE Clemente Survey Marker. 91 Comment
  UCR221896  Leptosiphon liniflorus Dick Newell, Don Millar 2010-10-12 42 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Limestone Canyon Rd. 0.6 mile due east of Limestone Spur 290 Comment
  RSA602109  Leptosiphon parviflorus Scott D. White 1997-5-6 5036 Orange Santa Ana Mountians, Santiago Canyon Area: Unnamed tributary to Santiago Creek flowing from the SW, directly W of Pancho Canyon. Lomas de Santiago S179. 366 Comment
  RSA789223  Leptosiphon parviflorus Naomi Fraga 2009-5-11 2718 Orange San Juan loop trail, Cleveland National Forest just west of Sugarloaf Spur Trail. 912 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
  SEINET3915524  Lepturus cylindricus Louis C. Wheeler 1932-6-25 851 Orange 1/2 mile N Newport Bay.; 0 15 Comment
  UCR193850  Lessingia filaginifolia A. C. Sanders, Fred M. Roberts 2008-7-16 35825 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, along road in lower Limestone Canyon, near junction with Harding Truck Trail 290 Comment
  UCR140884  Leucojum aestivum Robert DeRuff 1988-2-20 352 Orange Southern Coast, Costa Mesa, Irvine Blvd. and 23rd Street 9 Comment
  RSA0023265  Leymus triticoides R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49775 Orange Santa Ana Mountains: Trabuco Canyon Comment
  CDA35061  Ligustrum lucidum Mark A. Elvin, D. Kelch, B. S. Nerhus, P. Iluore 2006-12-9 5327 Orange Southern Coastal; Newport Backbay; along Bayside Drive ca. 100 miles west of Eastbluff Drive. Comment
  CAS-BOT-BC130582  Lilium humboldtii John Thomas Howell 1927-7-26 2841 Orange SE. fork of Claymine [Canon] Canyon, n. Santa Ana Mts. 304 Comment
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Mar 27 2018
  UCR231358  Lilium humboldtii A. C. Sanders, Kent Beaman 2011-9-27 39911 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail, 3.4 km NNW (340 deg. ) of Santiago Peak 1088 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
  CDA1076  Limonium binervosum D. G. Kelch 2006-12-9 6 .547 Orange Along Newport Back Bay Dr. in side canyon. Comment
  CLARK-A1528-3809  Limonium californicum John C. Roos 1937-8-31 740 Orange Newport Beach Comment
  IRVC29763  Limonium californicum Barry S. Nerhus, Mark A. Elvin 2006-11-4 8 Orange Huntington Beach, Bolsa Chica Wetlands, SW portion of Reserve beside Pacific Coast Highway. Southern Coastal 0 Comment
  UCSB36206  Limonium californicum Ferren, Wayne 1980-8-27 Orange Tidal sand bank along channel of Newport Backbay below W side of Backbay Drive ca. 1.5 km NE of Rt. 1, Newport Beach Comment
  RSA701802  Limonium duriusculum Fred M. Roberts 2000-6-5 5338 Orange Yorba Linda, along Hidden Hills Dr. near Sunbeam Lane, on ridge above Box Canyon 376 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
  RSA723548  Limonium ramosissimum R. E. Riefner 2006-8-13 6 -391 Orange Upper Newport Bay at Jamboree Rd. 9 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
  RSA468571  Linanthus androsaceus Albert J. Perkins 1923-4-27 s.n. Orange Trabuco Canyon. Comment
  RSA749298  Linanthus californicus Fred M. Roberts 1999-4-22 5185 Orange Lomas de Santiago: tributary to Santiago Creek wash along spur road on ridge between Limestone Cyn. and Santiago Creek wash opposite Williams Cyn., 1.9 km SE Silverado Sch. and 2.2 km NNW Bolero Lookout. 395 Comment
  SD42979  Linanthus californicus E. B. Harbison Mar 1948 Orange San Juan Camp. Comment
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Sep 30 2013
  SBBG98236  Linanthus dianthiflorus C. B. Wolf 1932-3-8 2675 Orange 0.5 mi N of Corona del Mar, borders of Newport Bay 7 Comment
  UCR150920  Linanthus floribundus subsp. floribundus Valerie Soza, LeRoy Gross 1999-6-7 481 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 Comment
  JEPS33699  Linanthus liniflorus John Thomas Howell 1927-6-8 2458 Orange Santa Ana Canyon 182 Comment
  UCR132991  Linanthus parviflorus Adrian Wolf 2000-5-3 465 Orange Santa Ana Mtns., North Ranch Policy Plan Area, upper Fremont Canyon, eastern tributary 579 Comment
  RSA790708  Linaria canadensis Pomeroy 1929-3-16 103 Orange Costa Mesa. CP3. Comment
  RSA0054843  Linaria canadensis Keith E. Hoffmaster 1927-4-2 304 a,b,c,d Orange Santa Ana Mts. San Onofre. Comment
  UCR209356  Linaria canadensis var. texana Fred M. Roberts 2008-4-8 6849 Orange Lomas de Santiago, Loma Ridge, Upper Dripping Springs Cnyn, 1.0 km northeast of Bee Peak, Irvine Ranch Conservancy 458 Comment
  RSA594875  Lindernia dubia Fred M. Roberts Jr., Wayne Ferren 1991-12-1 4830 Orange San Josquin Hills: Laguna Canyon, Upper Laguna Lake, 3.5 km N junction El Tprp Rd. , 4.9 km ENE Signal Peak; 113 Comment
  RSA468251  Lithophragma affine subsp. affine Albert J. Perkins 1913-3-6 s.n. Orange Near San Juan Hot Springs. Comment
  IRVC21406  Lobelia dunnii var. serrata A. S. Boughey 1968-7-9 405 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  UCR217465  Lobularia maritima Mark A. Elvin 2003-2-23 2313 Orange South Coast, Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  JEPS23240  Loeflingia squarrosa var. squarrosa Alice King 1908-1-1 Orange Anaheim Comment
  RSA603344  Lolium perenne Scott D. White 1997-6-12 5322 Orange East of San Juan Capistrano: San Juan Creek beteen Highway 74 bridge and Mission Vieja site, i.e. ca. 2 - 4 miles E of I-15 [Interstate 5] / Highway 74 junction. 46 Comment
  RSA0011622  Lolium perenne subsp. multiflorum Rankin s.n. Orange Irvine Park. Comment
  POM1289  Lolium temulentum P. A. Munz 1918-5-4 2202 Orange Laguna Beach Comment
  RSA564109  Lomatium dasycarpum subsp. dasycarpum B. Pitzer, S. Hemstreet 1992-5-27 1956 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
  RSA751165  Lomatium lucidum D. E. Bramlet 2008-5-9 4267 Orange Ridgeline between the upper two tributaries of Wier Cyn. 1.2km east of S. Serrano Ave & 1.3km west of Gypsum Cyn. 330 Comment
  SD140137  Lonicera subspicata B. Pitzer, S. Hemstreet 1992-5-21 1940 Orange Cleveland National Forest; State Highway 74, 1.0 mile yuphill from the 2000 foot marker, and left ca. 0.1 mile on an old paved road. 760 Comment
  RSA5268  Lonicera subspicata var. denudata C. B. Wolf 1932-12-19 4434 Orange Main divide of Santa Ana Mts. between Sierra Peak and Skyline Drive 762 Comment
  RSA7459  Lonicera subspicata var. denudata C. B. Wolf 1933-8-24 5377 Orange 1/2 mile below summit of Bedford Motorway, east slope of Santa Ana Mountains. 976 Comment
  UC1125290  Lonicera subspicata var. denudata A. Lewis Apr 1934 404 Orange Verdugo Canyon Cleveland National Forest, Corona Quadrangle Comment
  RSA788249  Lonicera subspicata var. johnstonii R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49625 Orange Santa Ana Mountains: San Juan Canyon, along Ortega Highway (74) across from San Juan Fire Station Comment
  IRVC26711  Lotus argophyllus var. argenteus Mark A. Elvin 2004-4-4 3212 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA406162  Lotus hamatus M. B. Dunkle 1934-6-18 3987 Orange San Juan Canyon; Southern Coastal 305 Comment
  RSA599637  Lotus heermannii Fred M. Roberts, Paul Barrett, Gail Bastillos 1995-7-25 4966 Orange San Juan Capistrano: San Juan Creek, 1.0 km SW La Novia Street bridge. 27 Comment
  UC454692  Lotus heermannii I. J. Condit 1908-7-21 Orange Los Alamitos Comment
  RSA498329  Lotus heermannii H. L. Bauer 1929-5-7 s.n. Orange Santa Ana Canyon. Comment
  RSA396  Lotus salsuginosus J. T. Howell 1927-6-3 23 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA681848  Lotus salsuginosus Scott D. White, Michael Honer 2003-6-12 9541 Orange Southwestern Santa Ana Mtn. Foothills: Rancho Mission Viejo. Upper end of Trampas Canyon. 152 Comment
  RSA406908  Lotus scoparius F. R. Fosberg 1931-6-21 S 5102 Orange Silverado Canyon. Santa Anita Mts. Comment
  RSA648948  Lotus scoparius Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-25 66 Orange 1/2 mile south of Chino Hills State Park Boundary. 228 Comment
  RSA678492  Lotus scoparius Fred M. Roberts, Robert L. Allen, Carol Roberts 2003-5-11 5851 Orange Dana Point Headlands: 0.8km SSW Richard Henry Dana School north of Marguerita Drive 76 Comment
  UC537008  Lotus scoparius Lawrence M. Booth 1932-5-12 1025 Orange Newport Bay Comment
  UCR220035  Lotus scoparius subsp. scoparius Rebecca T. Vo 2010-6-1 s.n. Orange South Coast, Huntington Beach, Santa Ana River Bike path on west side of the mouth of the Santa Ana River, near Orange County Sanitation Treatment Plant, north of Pacific Coast Hwy and east of Brookhurst St. 1 Comment
  IRVC27497  Lotus scoparius var. scoparius Mark A. Elvin 2004-5-2 3406 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA621861  Lotus scoparius var. scoparius R. S. Woglum 1932-4-16 s.n. Orange Trabuco Canyon, Santa Ana Mountains, Cleveland National Forest Comment
  UCR154288  Lotus scoparius var. scoparius Mark A. Elvin 2004-5-2 3406 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 Comment
  HSC98231  Lotus strigosus S. M. Clapp 1966-4-3 5 Orange Union Oil Prop., just S of Imperial Hwy. and E of Associated Rd. 61 Comment
  POM50643  Lotus strigosus L. R. Abrams 1901-06 s.n. Orange Laguna Comment
  RSA680538  Lotus strigosus Scott D. White 2003-3-21 8801 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  UC867303  Lotus strigosus I. W. Clokey 1932-3-1 5328 Orange Laguna Beach 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
  UCR192497  Lotus strigosus A. C. Sanders, Fred M. Roberts 2008-3-25 34565 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR220080  Lotus strigosus Dick Newell, Don Millar 2010-3-2 007 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lakeview Rd. 0.3 mi. east of Irvine Lake dam 305 Comment
  IRVC22008  Lotus strigosus var. strigosus Fred M. Roberts, Gordon Marsh 1985-3-12 1502 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
  IRVC18811  Lotus strigosus var. strigosus Karlin G. Marsh 1983-4-11 s.n. Orange Laguna Beach: Sycamore Hills; dirt road surface of central ridge line. southern coastal Comment
  IRVC2225  Lotus strigosus var. strigosus E. P. Cowper 1964-4-10 Orange Corona del Mar Highschool. Newport Beach Comment
  IRVC24771  Lotus strigosus var. strigosus Fred M. Roberts 1986-4-24 2796 Orange Rancho Mission Viejo: Canyon east of Trampas Canyon, S of Hwy 74, 2.5km E Viejo Survey Mark. Santa Ana Mountains 113 Comment
  RSA688873  Lotus unifoliolatus Fred M. Roberts 2003-5-1 5666 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.49km S Gato Gate and just west of Cristianitos Rd. (San Clemente) 84 Comment
  POM201832  Lotus wrangelianus L. M. Booth 1932-5-19 1073 Orange Newport Bay. Comment
  UCR207792  Ludwigia hexapetala O. F. Clarke 2004-6-23 s.n. Orange South Coast, Newport Back Bay, just south of the Muth Interpretive Center 15 Comment
  RSA717042  Ludwigia peploides Fred M. Roberts, Chris M. Barnhill 2005-9-27 6285 Orange San Juan Capistrano: San Juan Creek wash, east of La Novia Road bridge, 1.4km E Mission San Juan Capistrano. 27 Comment
  UC1543224  Lupinus Donald G. Nelson 1935-3-23 182 Orange near dump just s of E. Orange thorpe Ave., E. Fullerton E. Fullerton Comment
  JEPS65411  Lupinus bicolor Alice King 1908-4-18 Orange Santa Ana Mts. Comment
  RSA681016  Lupinus bicolor Fred M. Roberts, David E. Bramlet 2003-3-13 5576 Orange Donna O'Neill Land Conservancy: Ridge west of Christianitos Canyon, 1.6 km NW Sycamore Gate. 197 Comment
  RSA747605  Lupinus bicolor Fred M. Roberts 2000-4-27 5305 Orange Lomas de Santiago: Lomas Ridge, Agua Chinon Wash, 1.5 km S Bolero Spr. and 2.1 km WSW Bolero Lookout. 281 Comment
  RSA652742  Lupinus bicolor subsp. microphyllus R. B. Newcom 1948-4-24 26 Orange 3 miles NW of Irvine Park 45 Comment
  RSA542582  Lupinus concinnus subsp. concinnus Fred M. Roberts, Carol A. Williams 1988-4-2 3891 Orange Santa Ana Mtns. hillside SE of Falcon Group Camp, 2.1km ESE Los Pinos Peak. 1012 Comment
  RSA543961  Lupinus concinnus subsp. concinnus Steve D. Boyd 1991-5-9 6192 Orange Crest of range at Oak Flat, SE of Sierra Peak, just West of Riverside County Line. 793 Comment
  RSA699738  Lupinus densiflorus Keith E. Hoffmaster 1935-4-19 s.n. Orange Santa Ana Mts. (Trabuco Rd.) Comment
  SD255174  Lupinus excubitus R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49802 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  CAS-BOT-BC216670  Lupinus excubitus subsp. hallii Munz; Street; Williams 1919-5-3 2658 Orange Santa Ana Canon [Canyon] Comment
  RSA2086  Lupinus hirsutissimus Carl B. Wolf 1931-3-6 1843 Orange Trabuco canyon, 1/2 mile above Trabuco Oaks, west slope of Santa Ana Mountains. 457 Comment
  RSA409  Lupinus hirsutissimus J. T. Howell 1928-2-25 847 Orange Nolina Canyon, Rancho Santa Ana. 152 Comment
  RSA598965  Lupinus hirsutissimus Scott D. White 1997-3-28 4837 Orange Santa Ana Mountains: above Modjeska Canyon, proposed water tank site. 427 Comment
  RSA699189  Lupinus hirsutissimus R. H. McArthur 1934-3-25 s.n. Orange Limestone Canyon Comment
  IRVC16565  Lupinus sparsiflorus subsp. sparsiflorus Gordon A. Marsh, Karlin G. Marsh 1978-5-2 s.n. Orange Santa Ana Mountains; Silverado Truck Trail. Peninsular Ranges 884 Comment
  IRVC2305  Lupinus sparsiflorus subsp. sparsiflorus E. P. Cowper 1965-4-3 s.n. Orange Modjeska Canyon Santa ANa Mountains Comment
  IRVC8674  Lupinus sparsiflorus subsp. sparsiflorus Charles W. Sexton 1965-3-27 s.n. Orange Ortega Highway out of San Juan Capistrano Southern Coastal Comment
  RSA17206  Lupinus sparsiflorus subsp. sparsiflorus Percy C. Everett 1935-5-6 6754 Orange Rancho Santa Ana. along railroad embankment north of pear orchard. 122 Comment
  RSA542384  Lupinus sparsiflorus subsp. sparsiflorus Fred M. Roberts 1988-3-15 3850 Orange Rancho Mission Viejo: Verdugo Canyon, 2.6 km ENE Point Rancho Survey Mark 149 Comment
  IRVC22220  Lupinus succulentus Fred M. Roberts, Gordon Marsh 1985-4-3 1612 Orange Irvine: Irvine Ranch, 1.2km W UCI campus center, Southern Coastal 24 Comment
  IRVC2348  Lupinus succulentus D. Van Gorden 1965-5-9 HS 0415 Orange Silverado Canyon. Santa Ana Mountains; Comment
  RSA685924  Lupinus succulentus Fred M. Roberts, D. E. Bramlet 2003-3-27 5623 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Chistianitos Cyn., 0.79km N Sycamore Gate, 0.23km W Chistianitos Rd. 122 Comment
  UCR191781  Lupinus succulentus A. C. Sanders, Fred M. Roberts 2008-3-25 34573 Orange Peninsular Range; Santa Ana Mtns., saddle on ridge near head of Weir Canyon, 5.3 miles ENE of Villa Park, 3.1 mi. N of (Santiago Reservoir) Irvine Lake 405 Comment
  UCR223430  Lupinus succulentus Dick Newell, Don Millar 2011-2-15 062 Orange South Coast, San Joaquin Hills, Laguna Wilderness Park, along Stagecoach Trail 131 Comment
  IRVC16721  Lupinus succulentus J. B. Anderson 1966-4-9 545 Orange San Joaquin Hills: Coyote Canyon, north facing slope, 1/4 mile W of Signal Peak Southern Coastal 274 Comment
  RSA788818  Lupinus truncatus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49803 Orange Santa Ana Mountains: Trabuco Canyon Comment
  UCR130356  Lycium A. C. Sanders, Mark A. Elvin 2003-10-12 27313 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  CAS-BOT-BC516184  Lycium californicum R. E. Riefner, Jr. 2012-11-24 12 -558 Orange City of San Clemente, Presidio Ave., ca. 0.2 mi S of Ave. Pico 34 Comment
  RSA5270  Lycium californicum B. D. Stark 1932-12-9 4424 Orange Canyon 1 mile NW of Laguna Beach Comment
  RSA80321  Lycium californicum F. W. Peirson 1924-2-10 4526 Orange Balboa Beach, mainland near bridge Comment
  UCR240186  Lycium californicum R. E. Riefner Jr. 2012-11-24 12- 558 Orange South Coast, city of San Clemente, Presidio Ave. c. 0.2 mi south of Ave. Pico 34 Comment
  UCSB52453  Lycium californicum Roberts, Fred 1983-3-10 Orange Dana Point Headlands; cliff west of and above Dana Point Harbor, south of old Cove Rd.; 0.8km S Richard Henry Dana School 60 Comment
  RSA0014847  Lythrum californicum I. M. Johnston 1924-8-29 s.n. Orange 4 mi. S of Santa Ana. Comment
  SD247671  Lythrum californicum R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49631 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Psrings. Shallow water of raodside ditch. Comment
  CAS-BOT-BC206260  Malacothamnus fasciculatus John Thomas Howell 1927-6-20 2557 Orange North side of Santa Ana Canyon 243 Comment
  POM220268  Malacothamnus fasciculatus F. M. Reed 1929-06 6534 Orange Between Newport and Huntington Beach Comment
  RSA433315  Malacothamnus fasciculatus F. R. Fosberg 1931-6-21 S- 5096 Orange Lower Santiago Canyon. Comment
  UCR130492  Malacothrix saxatilis var. saxatilis R. E. Riefner Jr. 1999-5-22 99- 289 Orange South Coast, city of Dana Point, west of Pacific Coast Hwy, vicinity of Salt Creek Park and Ritz Carlton Hotel 15 Comment
  IRVC21322  Malacothrix saxatilis var. tenuifolia Fred M. Roberts 1982-7-30 786 Orange Niguel Hill, 0.9km ENE Aliso Peak, Laguna Niguel 260 Comment
  JEPS36606  Malacothrix saxatilis var. tenuifolia Lawrence M. Booth 1932-7-27 131 Orange Newport Bay Comment
  RSA0027428  Malacothrix saxatilis var. tenuifolia Fred M. Roberts 2013-7-18 7661 Orange San Joaquin Hills: Newport Beach, Buck Gully, along Buck Gully Trail, about 0.7 km from the north terminus of Poppy Street and 1.8 km WNW summit of Pelican Hill. 52 Comment
  UCR106283  Malacothrix saxatilis var. tenuifolia B. G. Pitzer, M. Georgiady 1997-4-5 3076 Orange San Joaquin Hills, Crystal Cove State Park, along 'No Dogs' Trail (from parking area, along western bottom edge of ridge between Muddy Canyon & Moro Canyon), to just below intersection with 'Poles' trail 152 Comment
  POM225244  Malacothrix saxatilis var. tenuifolia P. A. Munz 1936-6-30 14177 Orange road at LaVida Springs, carbon Canyon. Comment
  RSA13103  Malosma laurina Percy C. Everett 1935-10-29 2574 Orange Rancho Santa Ana, Santa Ana Canyon N of canal & Mexican houses. 122 Comment
  RSA542520  Malosma laurina Fred M. Roberts, R. Fisher 1986-6-18 3018 Orange Irvine: Lower Shady Canyon, east slope, ca 2.6 km SE French Hill. 91 Comment
  SD236159  Malosma laurina A. C. Sanders, Fred M. Roberts 2008-6-17 35462 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Loma Ridge on Hicks Canyon Haul Road, c. mideway between Foothill Transportation Corridor and Santiago Cyn. Rd. 334 Comment
  UC68860  Malosma laurina H. M. Hall July, 1905 6731 Orange Santa Ana R. Comment
  RSA42473  Malosma laurina H. P. Bracelin 1941-7-27 1530 Orange [No additional locality data provided] Comment
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Jun 10 2012
  UCR193467  Malva nicaeensis A. C. Sanders, T. B. Salvato 2008-5-13 35356 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
  HSC79313  Malva parviflora W. R. Marsh Aug 1972 37 Orange Between Artesia and Buena Park, E side of Artesia Ave., 1.5 mi. NW of Western Ave. 23 Comment
  RSA184165  Malva parviflora I. L. Wiggins 1966-3-1 20479 Orange western edge of California State College campus, Fullerton Comment
  UCR158159  Malvella leprosa Adrian Wolf 1998-5-27 332 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
  RSA441222  Marah macrocarpa L. C. Wheeler 1934-1-14 2356 Orange 1 mile E mouth of Aliso canyon near Laguna. 30 Comment
  RSA0043354  Marrubium vulgare David Barrios 1991-5-8 21 Orange 1500 ft. northwest of Fairmont Ave and Quail Cir., Yorba Linda. 365 Comment
  RSA657745  Marrubium vulgare Ken Greby 1985-5-17 36 Orange behind PG and E substation located 2 km. SE from Laguna Canyon Rd., on El Toro Rd., adjacent to Leisure World. Comment
  RSA658481  Marrubium vulgare J. Berkley 1994-5-3 6 Orange Carbon Canyon Regional Park, west slope off the bike trail coming from Rose Drive, behind the dam on the hill before you turn the corner into the park. Comment
  UCSB12635  Marrubium vulgare Whittington, M. 1962-4-20 Orange South side of Back Newport Bay about .5 miles south of salt works, Newport Comment
  UCR240180  Marsilea drummondii R. E. Riefner Jr. 2008-6-22 08- 209 Orange city of Yorba Linda, Santa Ana Canyon, Santa Ana River, La Palma Avenue near Old Village Road 96 Comment
  CAS-BOT-BC348161  Matricaria discoidea C. L. Hitchcock; C. V. Muhlick 1964-3-17 23065 Orange 8 miles e. of Yorba Linda, Santa Ana Canyon Comment
  CAS-BOT-BC348166  Matricaria discoidea Ira L. Wiggins 1966-4-22 20615 Orange Along Associated Road between Yorba Linda Boulevard and Imperial Highway Comment
  RSA923  Matricaria matricarioides J. T. Howell 1928-2-7 822 Orange Near the ranch houses, Rancho Santa Ana 152 Comment
  CHSC69822  Matricaria occidentalis C. L. Mitchcock; C. V. Muhlick 1964-3-17 Orange Along road, 8 miles e. of Yorba Linda, Santa Ana Canyon. Comment
  UC1292308  Matricaria occidentalis C. L. Hitchcock and C. V. Muhlick 1964-3-17 23065 Orange 8 mi e Yorba Linda; Santa Ana Canyon Comment
  CDA6380  Mazus japonicus W. Humphrey 1973-7-19 Orange 7231 Irvine Boulevard, Santa Ana. 0 Comment
  RSA12927  Meconella denticulata Carl B. Wolf 1935-4-7 6317 Orange San Juan Canyon, Ortega Hwy, 2 miles east Orange County. 762 Comment
  RSA797820  Meconella denticulata Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49809 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  SD168148  Medicago lupulina R. L. Allen 1983-4-13 A 638 Orange Santa Ana,. 3030 Camille at Arapaho Comment
  RSA184088  Medicago lupulina I. L. Wiggins 1966-4-2 20578 Orange 1249 Luanne Avenue, Fullerton. Comment
  IRVC2383  Medicago polymorpha C. Thompson 1965-4-10 s.n. Orange Newport Beach; Corona del Mar, Corona Highlands. Southern Coastal Comment
  JEPS65509  Medicago polymorpha Lawrence M. Booth 1932-5-19 1079 Orange Newport Bay Comment
  UCR191419  Medicago polymorpha A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34657 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 330 Comment
  UCSB48053  Medicago polymorpha Fritzke, Sue; Roberts, Fred 1982-4-3 Orange Dana Point; hills, 1.0 km. N Dana Hills High School; 1.9 km. W Marco Forster Junior High School 100 Comment
  RSA746482  Medicago rigidula R. E. Riefner Jr. 2008-5-19 08 -99 Orange City of San Juan Capistrano, 0.2 mi E of Antonio Pkwy on Hwy 74 (Ortega Hwy) 88 Comment
  UCR208445  Medicago truncatula R. E. Riefner Jr. 2007-4-1 07- 166 Orange South Coast, city of Laguna Niguel, Laguna Niguel Regional Park, general vicinity of La Paz Road at Aliso Creek 230 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
  RSA746479  Medicago truncatula R. E. Riefner Jr. 2007-4-1 07 -166 Orange City of Laguna Niguel, Laguna Niguel Regional Park, general vicinity of La Paz Rd. at Aliso Creek. 70 Comment
  CAS-BOT-BC227847  Melaleuca nesophila R. E. Riefner, Jr. 2011-7-1 11 -82 Orange City of Newport Beach, beach area west of the end of Cameo Shores Road; south ca. 1 mi from Poppy Avenue 1 Comment
  SEINET10942437  Melica frutescens Robert F. Thorne, Earl W. Lathrop; G. Marshs 1977-6-4 Thorne 49768 Orange Santa Ana Mountains, Trabuco Canyon. Comment
  RSA681950  Melica imperfecta Fred M. Roberts, David E. Bramlet 2003-3-13 5579 Orange Donna O'Neill Land Conservancy: Ridge west of Christianitos Canyon, 1.6 km NW Sycamore Gate., (33 deg 29'37N, 117 deg 34' 16 W [UTM: 11S-04 46 936mE, 37 05 965mN.] 207 Comment
  RSA743516  Melica imperfecta Fred M. Roberts 2008-4-9 6883 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 52 Comment
  UC1543021  Melica imperfecta Donald G. Nelson 1935-4-6 213 Orange e of San Juan Capistrano (just s of boundary of Cleveland National Forest, up San Juan Canyon, small branching n-ward from summer ranger station on the main highway); San Juan Canyon Comment
  RSA590960  Melilotus albus Fred M. Roberts, Sandy Desimone 1991-3-28 4764 Orange Lake Forest: Along Regency Road near Brighton Lane, 5.4km SSW Bolero lookout. 244 Comment
  SEINET12169950  Melilotus albus S. A. Thompson, Rawlins, J. E. 1988-8-27 5261 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  IRVC23315  Melilotus indicus Fred M. Roberts 1985-7-23 2067 Orange Irvine; San Diego Creek between E Yale Loop and Jeffrey Rd. Southern Coastal 35 Comment
  IRVC2416  Melilotus indicus McGuire 1965-3-14 s.n. Orange Newport Beach; Bayside Dr. Southern Coastal Comment
  IRVC2427  Melilotus indicus C. Hooven 1965-4-17 s.n. Orange Santa Ana Heights; Spruce Ave. and Palisades. Southern Coastal Comment
  OBI30222  Melilotus indicus Nancy J. Mann 1976-5-16 s.n. Orange 1.2 mi N of Modjeska Cyn rd on Santiago cyn rd, Charlton Ranch, Santa Ana Mts. Area burned 8 Dec. 1975 Comment
  POM201874  Melilotus indicus L. M. Booth 1932-5-12 1018 Orange Newport Bay. Comment
  RSA0031757  Mentha citrata Robert F. Thorne 1977-11-21 50817 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs. Comment
  RSA733975  Mentha spicata Keith E. Hoffmaster 1926-12-18 428 Orange Santa Ana. Comment
  RSA734686  Mentzelia micrantha A. C. Sanders, T. B. Salvato 2008-5-13 35354 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
  CAS-BOT-BC435232  Mesembryanthemum crystallinum J. C. Roos 1965-6-16 s.n. Orange Dana Point. Comment
  RSA5811  Mesembryanthemum crystallinum C. B. Wolf 1932-6-28 3771 Orange Along western half of no. boundary of 40 acre Valencia Orange grove at Bryant Ave. and Hansen Road. 9 Comment
  RSA640309  Mesembryanthemum crystallinum L. C. Wheeler 1931-6-8 s.n. Orange Balboa Comment
  RSA696448  Mesembryanthemum crystallinum Minor Warne 1934-5-6 s.n. Orange Bluffs Corona Del Mar Comment
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Jun 24 2009
  CHSC46067  Mesembryanthemum nodiflorum Sean P. Gallagher 1988-4-2 6 Orange W end of Bolsa Chica Channel. 0 Comment
  UCR3314  Mesembryanthemum nodiflorum Cary Brown 1964-3-28 28364- 04 Orange South Coast, Hwy 101 alternate, 1 mile north of San Clemente 6 Comment
  RSA18532  Mesembryanthemum nodiflorum C. B. Wolf 1927-7-23 665 Orange Along the coast just north of San Clemente. Comment
  RSA5962  Mesembryanthemum nodiflorum C. B. Wolf 1932-9-13 4034 Orange Bryant Ranch: Triangle of waste ground S of Bryant Ave., & 1/2 mi. west of Los Alamitos Blvd., (Triangle waste ground at NW corner of SW 1/4 sect. 30 T4S R11W) 8 Comment
  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
  RSA588800  Micropus californicus Fred M. Roberts 1990-5-7 4600 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
  IRVC20789  Microseris douglasii subsp. douglasii Fred M. Roberts, S. L. Fritzke 1982-4-3 472 Orange Dana Point: hills .0 km N Dana Hills HS, 1.9 km W Marco Forester Jr HS. Southern Coastal 100 Comment
  RSA609947  Microseris douglasii subsp. platycarpha D. E. Bramlet 1993-4-4 2311 Orange University of California, Irvina Campus, adjacent to the UCI Ecological Reserve. The site is adjacent the end of Los Trancos Dr. & 500 ft. East of the reserve entrance. 46 Comment
  RSA642507  Microseris douglasii subsp. platycarpha D. E. Bramlet 1998-4-23 2608 Orange Chino Hills. Within the old Edison spur road, 20m east of the 500Kv towers. The site is 1.98km south of Telegraph Cyn. and 823m north of Blue Mud Cyn. 412 Comment
  RSA702990  Microseris douglasii subsp. platycarpha D. E. Bramlet, Fred M. Roberts 2003-3-27 3358 Orange Donna O'Neill Reserve. NE corner of the reserve 23m west of Cristianitos Rd. and 168m north of the E-W access road. 120 Comment
  RSA649067  Microseris douglasii subsp. platycarpha D. E. Bramlet 2000-4-12 2973 Orange Fremont Canyon. The site is 335 m south of the existing access road on the north ridge of the canyon. The site is 1.21km northeast of Santiago Creek. 335 Comment
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Feb 21 2007
  RSA749306  Microseris lindleyi Fred M. Roberts 1999-4-21 5179 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
  RSA598961  Mimulus aurantiacus Scott D. White 1997-3-28 4833 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  UCD122208  Mimulus aurantiacus Raymond A. Evans 1949-5-14 s.n. Orange Sea bluffs at Corona Del Mar. Comment
  HSC20693  Mimulus aurantiacus subsp. australis J. J. Wagoner 1965-4-11 22 Orange Modjeska Canyon, 1 mi. S of Irvine Rd. 152 Comment
  RSA649084  Mimulus aurantiacus subsp. australis Karl Price 1988-4-29 20 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  RSA0051384  Mimulus aurantiacus subsp. australis Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49602 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  OBI9534  Mimulus aurantiacus var. pubescens H. E. McMinn & M. Van Rensselaer, M. Van Rensselaer 1945-6-10 1912 Orange Slope on N side of Santa Ana River, Santa Ana Cyn Comment
  UCSB56675  Mimulus aurantiacus var. pubescens Roberts, Fred 1984-2-4 Orange Laguna Beach; South Laguna; Temple Hill; Upper Hobo Canyon; 1.2km NNE Goff Island; 2.4 km S Top of the World School 200 Comment
  RSA0022437  Mimulus aurantiacus var. pubescens Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49795 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  LA209127  Mimulus aurantiacus var. puniceus Joseph Andorfer Ewan; 1932-7-28 7692 Orange Corona del Mar Comment
  POM202726  Mimulus aurantiacus var. puniceus L. M. Booth 1932-7-27 1322 Orange Corona del Mar, Newport Beach, Bluff Ravine 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
  RSA588893  Mimulus aurantiacus var. puniceus Fred M. Roberts, Carol A. Roberts 1990-5-31 4661 Orange Costa Mesa; Fairview Park, Just west of end of Canyon Drive, 0.1 km W Canyon School. 24 Comment
  RSA747634  Mimulus aurantiacus var. puniceus Fred M. Roberts 2008-5-16 6981 Orange Dana Point: Dana Point Headlands, CNLM Preserve, along north slopes above Dana Strand Beach, 0.8km WNW Marine Institute, Dana Point Harbor. 45 Comment
  UCR102625  Mimulus aurantiacus var. puniceus B. G. Pitzer, M. Georgiady 1997-4-5 3100 Orange San Joaquin Hills, Crystal Cove State Park, portion across highway on the beach, bluffs immediately above beach and adjacent terraces for southeast end of park. 24 Comment
  UCR140800  Mimulus aurantiacus var. puniceus Robin G. Marushia 2004-4-16 001 Orange Southern Coast, El Moro Canyon, Crystal Cove State Park, Laguna Beach; grassy ridge southwest of No Name Ridge road in park, downhill from pullout and below closed road to park entrance 244 Comment
  UCR228801  Mimulus cardinalis Dick Newell, Don Millar 2011-7-19 210 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Dripping Springs 392 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
  RSA16334  Mimulus clevelandii Percy C. Everett 1935-6-18 7200 Orange Main Divide Motorway 7 miles from Santiago Peak lookout station 1311 Comment
  RSA550813  Mimulus clevelandii David M. Thompson 1992-7-5 s.n. Orange 3.9 mi N and W of Hwy 74 along USFS Road 3S04 (the N Divide Road). 1006 Comment
  RSA7634  Mimulus clevelandii Carl B. Wolf 1933-11 20009 Orange Trabuco Canyon, so wall, opposite the Trabuco truck trail. 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
  RSA447957  Mimulus guttatus M. B. Dunkle 1934-6-18 3948 Orange San Juan Canyon. 305 Comment
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Jun 14 2012
  IRVC28636  Mimulus pilosus Mark A. Elvin 2005-9-2 4491 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
  POM49742  Mimulus pilosus L. R. Abrams 1901-6-13 1759 Orange Laguna, San Joaquin Hills. Comment
  SEINET11941951  Mirabilis californica J. F. Bright, Wyman, C. 1933-1 8105 Orange In Santa Ana Foothills Comment
  RSA698209  Mirabilis laevis L. C. Hull 1934-3-7 s.n. Orange Laguna Hills Comment
  CAS-BOT-BC434671  Mirabilis laevis var. crassifolia Munz; Street; Williams 1919-5-3 2672 Orange Santa Ana River Canon [Canyon] 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
  CAS-BOT-BC434668  Mirabilis laevis var. crassifolia John Thomas Howell 1927-6-21 2562 Orange North side of Santa Ana Canon [Canyon] 152 Comment
  UCR281191  Modiola caroliniana Roger E. Reinke 2011-5-16 s.n. Orange Coastal Plain, Santa Ana, residence at 12782 Bubbling Well Road, backyard, end of driveway 41 Comment
  RSA0010774  Mollugo verticillata L. R. Abrams 1901-06 1769 Orange Laguna Comment
  RSA0010775  Mollugo verticillata P. A. Munz 1922-9-2 6357 Orange Ponds in Laguna Canyon. 46 Comment
  UCD86070  Monanthochloe littoralis Peter H. Raven 1958-7-5 13562 Orange north of Surfside. Comment
  UCR207556  Monanthochloe littoralis O. F. Clarke 2004-4-5 s.n. Orange South Coast, Newport Back Bay 3 Comment
  CAS-BOT-BC219927  Monardella breweri subsp. lanceolata L. R. Abrams 1901-7-13 1788 Orange San Joaquin Hills Comment
  SEINET9297241  Monardella hypoleuca Unknown 2008-7-16 35845 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi ESE of Tustin. Spring falling from 30 ft. cliffs forming a shaded bowl, with large pool at foot; forest of Quercus agrifolia and Platanus racemosa, with Sambucus mexicana, Rubus ursinus, Solanum douglasii, Heteromeles arbutifolia, RIbes malvaceum, R. speciosum, Rosa californica, Keckiella cordifolia, etc. Locally common rhizomatous perennial on dry slop in open brush, c. 100 m below the spring, between access road and stream. Comment
  IRVC25321  Monardella hypoleuca Karlin G. Marsh, G. A. Marsh 1989-6-25 s.n. Orange Central Santiago Canyon, south slope, along old mine trail just below Santiago Truck Trail, 2.7km SSW Laurel Springs. Santa Ana Mountains 748 Comment
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Aug 13 2012
  RSA0006611  Monardella hypoleuca subsp. intermedia A. C. Sanders, M. A. Elvin 2005-9-2 31615 Orange Santa Ana Mtns.: upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks. 976 Comment
  SBBG127388  Monardella hypoleuca subsp. intermedia A. C. Sanders with F. M. Roberts 2008-7-3 35683 Orange Weir Cyn, off Windy Ridge Rd below saddle on ridge above the Eastern Transportation Corridor; Santa Ana Mtns 365 Comment
  UC718448  Monardella hypoleuca subsp. intermedia Carl B. Wolf 1936-6-22 8003 Orange 3 mi above F.S. gate Santiago Canyon (along truck trail to Modjeska Pk.); Santa Ana Mts 762 Comment
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Jan 7 2018
  SEINET3156844  Monolepis nuttalliana L. Abrams 1903-4-18 3267 Orange Trabuco arroyo near Capistrano Comment
  IRVC26699  Moraea fergusoniae Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3173 Orange UCI Arboretum Southern Coastal 15 Comment
  SD241901  Morus alba Rober Lee Allen, Richard S. Newell, Roger E. Reinke 2006-6-30 Orange UTM in Supplement. Santa Ana Mtns, Holy Jim Canyon Trail. About 1.5 mile up trail from forest gate. Mature tree adjacent on the norhtwet side of the trail. 669 Comment
  RSA663203  Muhlenbergia asperifolia R. E. Riefner 2000-3-26 20 -150 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  CAS-BOT-BC275290  Muhlenbergia microsperma Carl B. Wolf 1932-3-8 2689 Orange 0.5 mile N of Corona Del Mar, borders of Newport Bay 7 Comment
  RSA682915  Muhlenbergia microsperma Scott D. White, Amanda Duchardt 2003-5-1 9166 Orange Slopes above west side of Trampas Canyon. 107 Comment
  RSA758892  Muhlenbergia microsperma A. C. Sanders, Fred M. Roberts 2008-4-22 35009 Orange Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 213 Comment
  UCR190991  Muhlenbergia microsperma A. C. Sanders, Fred M. Roberts 2008-4-22 35009 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  OBI1297  Myriopteris newberryi Ilk 1963-9-17 1095 Orange Laguna Canyon, Laguna Canyon, rock outcrops north of road, ca. 1/2 mile north of El Toro Rd. turnoff; 500 Comment
  UC814338  Najas guadalupensis P. A. Munz 1922-9-2 6347 Orange Laguna Lake 45 Comment
  UCR158039  Nama stenocarpa Adrian Wolf 1998-7-21 402 Orange South Coast, Emerald Canyon, Laguna Coast ranges, 3 km up canyon from Pacific Coast Hwy, 2.75 km SW of Laguna Canyon Rd. and El Toro intersection 122 Comment
  RSA681020  Nassella cernua Fred M. Roberts, David E. Bramlet 2003-3-13 5586 Orange Donna O'Neill Land Conservancy: Ridge west of Christianitos Canyon, 1.6 km NW Sycamore Gate., (33 deg 29'37N, 117 deg 34' 16 W [UTM: 11S-04 46 936mE, 37 05 965mN.] 207 Comment
  RSA701600  Nassella lepida Rankin s.n. Orange Silverado Comment
  RSA184108  Nassella pulchra I. L. Wiggins 1966-3-16 20527 Orange Entrance to Firestone Boy Scout Reservation. Comment
  RSA681946  Nassella pulchra Fred M. Roberts, David E. Bramlet 2003-3-13 5572 Orange Donna O'Neill Land Conservancy: Ridge west of Christianitos Canyon, 1.6 km NW Sycamore Gate., (33 deg 29' 41N, 117 deg 34' 20W; [UTM 11S-04 46 773mE, 37 06 077mN 197 Comment
  RSA732051  Nassella pulchra A. C. Sanders, Fred M. Roberts 2008-4-8 34741 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  UC407317  Nassella pulchra LeRoy Abrams 1903-4-18 3269 Orange Trabuco Canyon Capistrano Comment
  RSA697464  Nasturtium officinale Snow 1929-3-18 38 Orange Santa Ana River. Comment
  UC1618099  Navarretia Donald G. Nelson 1935-7-15 296 Orange Costa Mesa, Tracy locality Costa Mesa; , Tracy locality Comment
  RSA603289  Navarretia hamata subsp. leptantha R. E. Riefner 1997-7-18 97 -240 Orange Near Fullerton Nature Park. Comment
  CAS-BOT-BC140681  Nemacaulis denudata var. denudata O. F. Clarke 2003-5-7 s.n. Orange South Coast: Least Tern Reserve, just north of the mouth of the Santa Ana River, Huntington Beach 4 Comment
  RSA616  Nemophila menziesii J. T. Howell 1928-3-18 889 Orange Rancho Santa Ana, Botanic Garden. 152 Comment
  RSA699661  Nemophila menziesii Keith E. Hoffmaster 1927-4-8 s.n. Orange Santa Ana Mountains. Comment
  RSA0051320  Nemophila menziesii Ophelia Frost 1932-3-28 s.n. Orange 2 miles NW of H.B. Comment
  SEINET3479039  Nemophila menziesii W. P. Vestal, A. G. Vestal 1955-3-24 Orange El Toro, El Toro, about 5 miles east Comment
  RSA588711  Nemophila menziesii var. integrifolia Fred M. Roberts 1990-5-22 4639 Orange Santa Ana Mountains; Upper Hot Springs canyon, just west of Falcon Group Camp, 1.9km ESE Los Pinos Peak. 994 Comment
  IRVC150  Nephrolepis cordifolia Dorleene Van Gorden 1965-3-9 HS 539 Orange Costa Mesa; 2212 Meyer Plance Southern Coastal Comment
  UC2042004  Nephrolepis cordifolia R. E. Riefner Jr. 2010-5-14 10 -35 Orange City of Laguna Beach, N side of North Coast Highway near Jasmine St. Comment
  RSA708532  Nerium oleander Fred M. Roberts, Robert L. Allen, Chris Barnhill 2004-8-21 6107 Orange Caspers Wilderness Park, San Juan Cyn., Old San Juan Hot Springs, c.a. 0.4km SW San Juan Ranger Station, north of SR 74. 214 Comment
  UC424185  Nicotiana clevelandii Philip A. Munz 1923-4-4 Orange Laguna Beach Comment
  CDA1049  Nicotiana glauca D. G. Kelch 2006-12-9 6 .542 Orange Along Newport Back Bay Dr. in side canyon. Comment
  OBI28517  Nicotiana glauca R. L. Allen 1978-8-28 s.n. Orange Mission Viejo, near Saddleback Ranch Apts; Los Alisos Blvd Comment
  RSA700001  Nicotiana glauca Kenneth Beard s.n. Orange Santa Ana riverbank Comment
  RSA733872  Nicotiana glauca Goldie Peale 1932-4-24 s.n. Orange Laguna Hwy. Comment
  SEINET12856155  Nicotiana quadrivalvis P. C. Everett 1935-1 7259 Orange 0.8 mile E. of Atwood, S side of RR tracks 107 Comment
  RSA4802  Nitrophila occidentalis James Snow s.n. Orange Bryant Ranch, near Long Beach. Station #1. Plant #3. Comment
  CHSC106530  Nolina cismontana Robt. Allen; Celia Kutcher 2007-5-19 Orange Peninsular Ranges; Santa Ana Mountains region: San Juan Trail, circa 3.4 air miles (5458 m) below (southwest of) trailhead at southern edge of Blue Jay Campground, circa 1.3 air miles (2121m) above (northeast of) trailhead at Hot Springs Canyon. UTM Zone 11S; 3719486N 454160E. 736 Comment
  RSA506750  Nolina cismontana James C. Dice 1986-5-31 653 Orange Mission Viejo, 1.2 km NW of Lake Mission Viejo, along south edge of Vista del Lago, just west of Canaveras. 275 Comment
  RSA643664  Nolina cismontana R. E. Riefner 2000-3-19 20 -137 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and parallel to Black Star Cy. Road. 396 Comment
  RSA746535  Nolina cismontana R. E. Riefner 2007-6-14 7 -256 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fork Fremont Canyon, Donaldson Ranch Area. 381 Comment
  RSA759277  Nolina cismontana 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
  UCR113027  Nolina cismontana R. E. Riefner Jr. 2000-3-19 20- 137 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running N and parallel to Black Star Cyn Road 396 Comment
  RSA698084  Nolina parryi R. H. McArthur 1934-5-19 s.n. Orange Live oak Canyon. Comment
  RSA734215  Nolina parryi Keith E. Hoffmaster 1936-5-3 725 Orange Live Oak Canyon, Santa Ana Mts Comment
  SD247531  Nolina parryi R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49684 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 456 Comment
  CAS-BOT-BC176682  Nothoscordum gracile A. C. Sanders 2008-7-3 35714 Orange Peninsular Range; Santa Ana Mts.: Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Agustione Staging Area 260 Comment
  CDA25248  Nothoscordum gracile A. C. Sanders 2008-7-3 35714 Orange Peninsular Range; Santa Ana Mountains; Lomas de Santiago, Santiago Canyon near mouth of Limestone Canyon at Agustine Staging Area. Comment
  RSA17145  Oenothera californica subsp. californica Carl B. Wolf 1936-6-12 7944 Orange 1 mile E of Atwood. 91 Comment
  UCR174215  Oenothera elata A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33010 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
  CDA38146  Oenothera elata Mackessy & Patrick 1957-6-27 s.n. Orange Santa Ana River. 0 Comment
  RSA785413  Oenothera spiralis Keith E. Hoffmaster 1927-4-5 464 Orange [City of] Newport. 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
  RSA80683  Oligomeris linifolia F. W. Peirson 1925-4-11 5744 Orange 5 miles southeast of Laguna Beach. Comment
  UCR204271  Oncosiphon piluliferum Scott D. White, Jeff Lincer 2003-7-7 9616 Orange Coastal Plains & Basins; South Coastal Plain region, Former El Toro Marine Corps Air Station, East of 'El Toro Marine School' and Irvine Blvd.; site of former dump 140 Comment
  CAS-BOT-BC56807  Opuntia John Thomas Howell 1927-6-22 2573 Orange Field redacted by CAS, contact the data manager for more information 152 Comment
  RSA5312  Opuntia B. D. Stark 1933-6-5 4503 Orange 2 mi S of summit of Skyline Drive, on road along ridge to santiago Peak. Santa Ana Mountains. 1067 Comment
  CAS-BOT-BC56859  Opuntia X occidentalis B. D. Stark 1933-1-21 4519 Orange Field redacted by CAS, contact the data manager for more information 60 Comment
  CAS-BOT-BC56216  Opuntia ficus-indica John Thomas Howell 1927-6-22 2574 Orange Field redacted by CAS, contact the data manager for more information Comment
  JEPS66886  Opuntia littoralis L. M. Booth 1933-10-24 Orange Newport Comment
  RSA704425  Opuntia littoralis Fred M. Roberts, David E. Bramlet 2004-7-30 6081 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Western slopes of Cristianitos Cyn., 0.25km W Sycamore Gate and Cristianitos Road. 151 Comment
  UCR263408  Opuntia littoralis A. C. Sanders 2008-4-29 35122 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
  UCD169566  Opuntia oricola T. B. Salvato 2010-10-27 5128 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. 52 Comment
  IRVC14192  Opuntia prolifera J. W. Johnson 1976-8-11 Orange Irvine; UCI, 300ft. south of Medical Center; on heavy clay soil in grazing climax of mediterranean grasses. Destroyed by construction. Southern Coastal Comment
  POM317064  Opuntia vaseyi David Walkington 1961-9-4 9 Orange South of Skyline Dr. east of Acacia Dr., Fullerton. 107 Comment
  POM286416  Orthocarpus purpurascens Lyman D. Benson 1932-3-26 3191 Orange Dana Point. 61 Comment
  POM7995  Orthocarpus purpurascens var. pallidus C. F. Baker 1904-4-1 4132 Orange Anaheim. Comment
  RSA13172  Orthocarpus purpurascens var. pallidus Percy C. Everett 1935-4-27 6693 Orange 1 mi. west of Atwood, Jack Johnson property. 152 Comment
  CAS-BOT-BC355773  Osmadenia tenella Munz; Street; Williams 1919-5-3 2631 Orange Santa Ana River Canon [Canyon] Comment
  JEPS13141  Osmadenia tenella Frank W. Peirson 1922-5-18 1353 Orange Santa Ana Canyon 121 Comment
  UC171038  Osmadenia tenella H. M. Hall 1913-5-28 9406 Orange Santiago Canyon Comment
  UC912573  Osmadenia tenella Herbert L. Mason 1926-4-25 2903 Orange 5 mi n of Laguna Comment
  CAS-BOT-BC355781  Osmadenia tenella D. L. Crawford 1916-5-10 s.n. Orange Laguna Beach Region. Laguna Mts Comment
  SEINET10842082  Osmadenia tenella Tom Hensel 1973-7-8 Hensel 254 Orange Hillside south of current end of Santa Ana Dr. (855 Santa Ana), Laguna Beach. Comment
  HSC46609  Osmorhiza brachypoda Christopher Davidson 1977-5-18 5609 Orange Santa Ana Mts. Cleveland Nat. Forest. Santiago Peak (on Orange-Riverside Co. line). 1707 Comment
  SEINET10801634  Osteospermum ecklonis Charlene A. Bennett, David B. Dunn; Chester T. Dziekanowski 1976-7-21 Bennett 433 Orange Cultivated plants collected in and around the condominium-Pacific Island Estates in Laguna Hills; some native shrubs, etc. 152 Comment
  RSA782192  Osteospermum fruticosum Mark A. Elvin 2003-2-23 2315 Orange Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  UC484249  Oxalis albicans subsp. californica C. B. Wolf 1931-3-6 1858 Orange 1.5 mi below Trabaco Camp (Trabaco Canyon); Santa Ana Mtns, W slope 548 Comment
  UCR10199  Oxalis californica Diane Terrel 1969-5-6 s.n. Orange Peninsular range; Santa Ana Mtns., Tucker Bird Sanctuary northeast of El Toro in Modjeska Canyon 427 Comment
  POM196704  Oxalis pes-caprae E. Johnson 1930-2-25 s.n. Orange About Orange Comment
  CAS-BOT-BC354349  Pallenis maritima R. E. Riefner, Jr. 2013-1-16 13 -14 Orange City of Newport Beach, vicinity of Poppy Ave. and Ocean Blvd., coastal bluff at Little Corona Beach 7 Comment
  RSA797014  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. 2 Comment
  UC1618048  Panicum acuminatum Donald G. Nelson 1935-4-6 254 Orange e. San Juan Capistrano (200-300 ft. below main hwy., ca. 4 mi. from summit, San Juan Canyon); San Juan Canyon Comment
  RSA644978  Panicum acuminatum var. acuminatum R. E. Riefner 2000-2-19 20 -117 Orange Santa Ana Mtns. NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek and immediately N. of major stream fork. 305 Comment
  RSA651754  Panicum capillare Diane T. Liggett 1981-5-16 18 Orange Freeway (91) east to Gypsum Cyn. Road, north ot Featherly Park entrance, east to bike trail, .1 km east. Comment
  RSA773552  Panicum capillare Fred M. Roberts 2008-6-3 7032 Orange Lomas de Santiago: Loma Ridge, East Fork Rattlesnake Canyon, ca. 2.6 km NE Rattlesnake Reservoir spillway and 2.4 km ENE Bee Peak 225 Comment
  RSA800228  Panicum dichotomiflorum Justin M. Wood 2010-9-29 2755 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
  UCSB44178  Parapholis incurva Henneman, J. 1977-5-21 Orange Newport Back Bay Comment
  RSA629715  Parapholis incurva L. C. Wheeler 1947-5-3 6475 Orange Newport Bay. Comment
  RSA752714  Parietaria hespera var. californica Fred M. Roberts, Sandra Leatherman, Jennifer Pareti 2009-4-14 7150 Orange Dana Point Headlands: Dana Strand Beach and slopes above beach, 0.8 km WNW Marine Institute at Dana Point Harbor. CNLM Dana Point Preserve. 3 Comment
  IRVC19396  Parkinsonia aculeata R. L. Allen 1983-2-12 A624 Orange Fullerton; Hillcrest Park, slope bordering E Valley View Drive. Southern Coastal Comment
  IRVC22980  Parkinsonia aculeata Karlin G. Marsh 1986-9-12 s.n. Orange Yorba Linda; Santa Ana Canyon, Santa Ana River, north side, Featherly Park south of Esperanza Rd. Santa Ana Mountains 105 Comment
  UCSB40900  Paspalum dilatatum Roos, John 1936-10-13 Orange Costa Mesa near Santa Ana Comment
  POM301692  Paspalum dilatatum J. C. Roos 1942-6-20 990 Orange Anaheim, Telegraph Road, east of Los Angeles Comment
  SD245212  Paspalum distichum R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49568 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  UC2061664  Paspalum pubiflorum R. E. Riefner Jr. 2007-9-30 07 -419 Orange City of Yorba Linda, Santa Ana Canyon, N bank of Santa Ana River, vicinity of La Palma Ave. and Via Loma De Yorba East. Comment
  RSA724060  Paspalum urvillei R. E. Riefner 2005-11-4 5 -742 Orange City of Lake Forest, Alton Pkwy. at Bertea Rd. 123 Comment
  CAS-BOT-BC353419  Paspalum vaginatum R. E. Riefner, Jr. 2013-12-12 13 -375 Orange City of Dana Point, near Ritz-Carlton Hotel, Salt Creek Beach area 2 Comment
  RSA733054  Paspalum vaginatum R. E. Riefner 2007-7-8 07 -304 Orange City of Laguna Niguel, Aliso Creek, Alica Pwky. at Park Way. 46 Comment
  UCR204165  Paspalum vaginatum R. E. Riefner Jr. 2007-7-8 07- 304 Orange City of Laguna Niguel, Aliso Creek, Alicia Pkwy at Skate Park Way 46 Comment
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Jul 30 2010
  UCR204900  Paspalum vaginatum R. E. Riefner Jr. 2005-7-9 05- 545 Orange South Coast, city of Mission Viejo, Oso Creek, c. 1.4 mi north of Paseo de Colinas on Camino Capistrano 88 Comment
  RSA220953  Pedicularis densiflora E. W. Lathrop 1966-4-6 6142 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA698932  Pedicularis densiflora Unspecified 1935-02 s.n. Orange Ortega highway near San Juan Springs. Comment
  UCR237913  Pellaea andromedifolia Dick Newell, Judy Booth 2012-6-10 274 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, on Maple Springs Road 0.8 mi. NE of Maple Springs gate Comment
  RSA791471  Pellaea andromedifolia Keith E. Hoffmaster 1928-1-26 33 Orange Santa Ana Mtns Comment
  RSA301972  Pellaea andromedifolia var. andromedifolia J. R. Shevock 1970-12-20 574 Orange Silverado Canyon 762 Comment
  SD144154  Pellaea andromedifolia var. andromedifolia Scott D. White 1997-3-28 4835 Orange Above Modjeska Canyon: proposed water tank site. 420 Comment
  CAS-BOT-BC258794  Pennisetum clandestinum E. L. Paddock 1943-7-2 12738 Orange Near Dana Point Comment
  UCR181158  Pennisetum villosum R. E. Riefner Jr. 2003-11-30 03- 486 Orange South Coast, Santa Ana, 55 Freeway near Brookhollow St. 32 Comment
  UCR236680  Pennisetum villosum Fred M. Roberts, Sandra L. Leatherman 2008-9-17 7102 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
  RSA33780  Penstemon centranthifolius N. C. Cooper 1944-6-4 1351 Orange San Juan Canyon, lower camp ground. 457 Comment
  RSA708368  Penstemon grinnellii subsp. grinnellii Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6244 Orange Modjeska Peak, west slope along summit road, 0.15km by air W summit. 1613 Comment
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Sep 29 2007
  RSA407932  Penstemon heterophyllus var. australis N. C. Cooper 1949-5-1 3939 Orange San Juan Canyon. 610 Comment
  RSA542378  Penstemon heterophyllus var. heterophyllus Bernard Jaroslow 1989-5-29 B- 22 Orange Santiago Canyon: Along the Morrow Trail out of Live Oak Canyon, below truck trail. Comment
  RSA285583  Penstemon spectabilis D. C. Michener 1981-6-18 3973 Orange Firebreak and clearings in chaparral between Los Pinos peak and main divide truck trail (North of El Cariso). 1311 Comment
  CAS-BOT-BC330343  Pentachaeta aurea P. C. Everett 1935-4-22 6463 Orange Santa Ana Canyon, 0.25 mi W of Horseshoe Bend 121 Comment
  SBBG16546  Peritoma arborea E. B. Carlton 1961-9-3 C 6 Orange E of Hidden Valley Rd, ca. 1 mi from Brdway and S Coast Blvd, Laguna Beach Comment
  CAS-BOT-BC418841  Persicaria hydropiperoides John Thomas Howell 1927-7-5 2653 Orange Near Horseshoe Bend, Santa Ana River bottom, Santa Ana Canon [Canyon] 152 Comment
  UCR158041  Petunia parviflora Adrian Wolf 1998-6-23 359 Orange South Coast, northernmost of the Laguna Lakes in Laguna Canyon, southern edge of lake on west side of Laguna Canyon Rd. 119 Comment
  POM49687  Phacelia cicutaria var. hispida L. R. Abrams 1901-06 1820 Orange Santiago Peak trail. 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
  UCR239653  Phacelia cicutaria var. hispida Fred M. Roberts 2012-4-27 7544 Orange Lomas de Santiago, Loma Ridge, west of SR 241, tributary to 'Las Flores' Canyon, 1.5 km west-southwest of Irvine Lake Park Campground and 1.1 km east of Orange County Emergency Operations Center, Hill 1311 311 Comment
  RSA0023264  Phacelia cicutaria var. hispida Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49776 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  UCSB34159  Phacelia cicutaria var. hispida Nilsen, Erik; Roberts, Fred; Roberts, D. 1980-5-2 Orange Along Hwy. 74, 0.2 km. SSW of the entrance to the Lower San Juan Picnic area, San Juan Mountains 390 Comment
  RSA733877  Phacelia cicutaria var. hubbyi A. C. Sanders, Fred M. Roberts 2008-4-8 34745 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  RSA738988  Phacelia ciliata Pomeroy 1929-3-16 s.n. Orange Peter s Canyon Comment
  POM4488  Phacelia davidsonii L. R. Abrams 1901-06 1936 Orange Santiago Peak. Comment
  RSA606  Phacelia distans J. T. Howell 1928-3-18 892 Orange Rancho Santa Ana, Botanic Garden. 152 Comment
  POM299068  Phacelia distans J. T. Howell 1928-6-24 2590 Orange Olinda. 152 Comment
  RSA0041601  Phacelia distans Albert J. Perkins 1913-4-22 s.n. Orange Trabuco Canyon. Comment
  UCSB48102  Phacelia distans Roberts, Fred 1982-4-3 Orange Santa Ana Mtns.: Lower Hot Springs Cyn., 0.6 km. by road N of San Juan Guard Station; 0.8 km. WSW Juan Rancho Survey Mark 240 Comment
  UCSB52917  Phacelia distans Roberts, Jr., Fred 1985-3-10 Orange Dana Point Headlands: south of Scenic Dr., 0.3 km. W Dana Point Harbor; 0.8 km. S Richard Henry Dana School 60 Comment
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Feb 22 2019
  RSA734592  Phacelia grandiflora A. C. Sanders, Fred M. Roberts 2008-5-6 35220 Orange Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin. 216 Comment
  UCR191321  Phacelia hubbyi A. C. Sanders, Fred M. Roberts 2008-4-8 34745 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  RSA699146  Phacelia minor Minor Warne 1934-5-6 s.n. Orange Ortega Highway Comment
  SEINET6971803  Phacelia minor W. P. Vestal, A. G. Vestal 1955-3-24 3458 Orange Trabuco Canyon, about 5 miles east of El Toro. Comment
  RSA697793  Phacelia parryi R. H. McArthur 1934-3-17 s.n. Orange Gypsum Canyon. 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
  UC672389  Phacelia parryi Herbert L. Mason 1926-4-25 2911 Orange 5 mi s Laguna Comment
  UCR191337  Phacelia parryi A. C. Sanders, Fred M. Roberts 2008-4-8 34781 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon 495 Comment
  UCSB52927  Phacelia parryi Roberts, Jr., Fred 1983-3-16 Orange Laguna Beach; Sycamore Hills, central ridge, 1.1 km. NNE jct. El Toro and Laguna Canyon Rds.; 5.4 km. ESE Signal Peak 156 Comment
  CAS-BOT-BC144973  Phacelia ramosissima var. austrolitoralis Carl B. Wolf 1932-6-13 3716 Orange Fullerton, Malvern & Nicholas Aves. 53 Comment
  CAS-BOT-BC144975  Phacelia ramosissima var. austrolitoralis John Thomas Howell 1927-6-3 2417 Orange On sandy ridge, southern Puente Hills, Santa Ana Canyon 152 Comment
  UCR224402  Phacelia suaveolens subsp. keckii Robt. L. Allen, Reginald Durant 2008-5-16 s.n. Orange Santa Ana Mountains, along access road to Modjeska Peak, outside the sharp bend in the extreme north end of the road. Survey Point #47 1514 Comment
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Jul 21 2018
  POM202123  Phacelia tanacetifolia P. A. Munz 1934-3-26 13133 Orange Newport Beach. 12 Comment
  RSA738990  Phacelia viscida Minor Warne 1934-3-17 s.n. Orange Gypsum Canyon Comment
  IRVC22741  Phalaris aquatica Fred M. Roberts 1985-5-15 1802 Orange El Toro Canyon, El Toro Rd., 1.1km NE jct. Laguna Canyon Rd., Aliso Viejo 88 Comment
  CAS-BOT-BC259032  Phalaris lemmonii D. E. Bramlet 2003-6-8 3461 Orange South Coast: Fairview Park in Costa Mesa, 152 m west of Canyon School and 396 m NW of intersection of Wilson & Canyon Dr. 24 Comment
  UCR152757  Phalaris lemmonii D. E. Bramlet 2003-6-8 3461 Orange South Coast, Fairview Park in Costa Mesa, 152 m west of Canyon School and 396 m NW of intersection of Wilson & Canyon Dr. 24 Comment
  IRVC1778  Phalaris minor Robin Hobson 1965-4-10 s.n. Orange Newport Beach; [Newport] Back Bay Southern Coastal Comment
  UCD89033  Phalaris minor A. A. Beetle 1942-4-19 3091 Orange 20 miles S of Santa Ana, road to Laguna. Comment
  RSA708230  Phalaris paradoxa Fred M. Roberts, Robert L. Allen, Chris Barnhill, Carol A. Roberts 2005-4-10 6163 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
  UCSB68450  Phalaris paradoxa Anderson, J. 1966-4-26 Orange University of California, Irvine; south of Science Lecture Hall Comment
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Nov 1 2018
  RSA749050  Phoenix canariensis A. C. Sanders, Fred M. Roberts 2008-8-7 36007 Orange Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  RSA615547  Phoenix canariensis Fred M. Roberts 1997-10-22 5051 Orange Bolsa Chica saltmarsh: north of Garden Grove East Wintersburg Channel, 0.6 km S Chica Survey Marker. 0 Comment
  UCR218373  Phoenix dactylifera Robert DeRuff 2008-1 570 Orange South Coast, Upper Newport Bay, between Mariner's Drive and North Star Beach 6 Comment
  UCR145988  Phoradendron tomentosum June Latting 1977-1-12 s.n. Orange Chino Hills, Tonner Canyon 213 Comment
  RSA0072390  Photinia arbutifolia Claire Kibbe 1936-07 s.n. Orange Santa Ana Canyon. [Orange or Riverside County] Comment
  RSA434510  Phyla lanceolata Albert J. Perkins 1912-10-15 s.n. Orange Peatlands near head Newport Bay. Comment
  POM1013  Phyllospadix torreyi Daniel J. Crawford 1916-7-29 s.n. Orange Abalone Point. Comment
  UCR266401  Physalis crassifolia D. E. Bramlet 1994-4-30 2374 Orange South Coast; San Joaquin Hills, small knoll SE of the Sand Canyon Reservoir, 524 ft. east of the bottom of Shady Canyon, near Irvine 80 Comment
  RSA691  Physalis philadelphica J. T. Howell 1927-7-28 513 Orange West side, Rancho Santa Ana. 152 Comment
  UCR281509  Phytolacca icosandra Mitch Provance, Jeremiah George 2017-3-20 317- 101 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
  RSA610236  Pilularia americana Fred M. Roberts, Tony Bomkamp, Rick Riefner 1997-2-27 4978 Orange Costa Mesa: Fairview Park, 0.1 km W Canyon School. 24 Comment
  SEINET7882517 Image available Pinus contorta Jean Coulson 1959-1 s.n. Orange Disneyland, Orange County, California. Located on small hill E. of castle, near house of tomarrow. Comment
  MACF019839  Pinus coulteri Clancy T. O'Dowd 1975-5-21 5 Orange Santiago Canyon Rd. Cleveland National Forest 731 Comment
  UCR174182  Pinus coulteri A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33036 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  UCSB41932  Pinus coulteri Ramirez, Richard 1971-3-29 Orange About 8 mi. inland on Saddleback Canyon Rd., from Tucker Wildlife Sanctuary Comment
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May 8 2015
  UCR231188  Pinus sabiniana A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39944 Orange Peninsular Range; Santa Ana Mountains, Beek's Place on Main Divide Truck Trail 863 Comment
  UCR193349  Piptatherum miliaceum A. C. Sanders 2008-5-28 35438 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Bee Flat at mouth of Limestone Canyon 264 Comment
  UCSB48208  Piptatherum miliaceum Roberts, Fred 1981-7-8 Orange Rancho Mission Viejo; Calif. Rte. 74, 9.2 km. ENE San Juan Capistrano 100 Comment
  POM202524  Piptatherum miliaceum L. M. Booth 1932-6-28 1211 Orange Balboa Island, Newport Beach Comment
  RSA184119  Piptatherum miliaceum I. L. Wiggins 1965-10-24 20291 Orange At corner of Yorba Linda and State College Blvds., Fullerton Comment
  RSA756321  Pistacia chinensis A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37202 Orange Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., near Agustine Staging Area at south foot of Blue Diamond Haul Rd. bridge over Santiago Canyon Rd. 253 Comment
  RSA775557  Pistia stratiotes Arthur Howe 1982-2-27 s.n. Orange Huntington Beach Central Park. Comment
  UCR188937  Pittosporum undulatum Robert DeRuff 2006-1 566 Orange Newport Beach, Upper Newport Bay, Eastbluff 30 Comment
  RSA716096  Plagiobothrys acanthocarpus Fred M. Roberts, Melissa Ervin 2001-3-21 5385 Orange San Joaquin Hills: Upper San Canyon, c..a. 2km SE French Hill, within the Shady Cyn. Development. 98 Comment
  UCR192485  Plagiobothrys canescens A. C. Sanders, Fred M. Roberts 2008-3-25 34511 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 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
  UCSB52464  Plagiobothrys collinus var. fulvescens Roberts, Fred 1982-4-2 Orange Laguna Niguel; hills, 3.5 km. ESE Aliso Peak; 3.2 km. ESE Alicia Fire Station, N of Del Avion 100 Comment
  UC1212094  Plagiobothrys nothofulvus D. Bates 1960-4-2 2308 Orange Route 74 e San Juan Capistrano Comment
  SBBG63887  Plagiobothrys nothofulvus E. Rockwell -Feb-1920 59 b Orange Santiago Cyn 365 Comment
  RSA412598  Plantago bigelovii subsp. californica Anstruther Davidson 1910-04 2350 Orange Corona Del Mar. Comment
  RSA590720  Plantago elongata subsp. pentasperma R. E. Riefner 1994-4-22 94 -337 Orange S 1.5 miles from Moulton Meadows Park, Nyes' Place Ave, Laguna Beach. Comment
  RSA542449  Plantago erecta Fred M. Roberts 1988-3-15 3868 Orange Rancho Mission Viejo: Central Gabino Canyon, 7km E Playa Survey Marker, 162 Comment
  RSA749286  Plantago erecta Fred M. Roberts, Linda Farley 2008-3-28 6834 Orange Santa Ana Mtns.: Upper Weir Cyn., Irvine Ranch Conservancy, 3.3 km ENE Robbers Peak on ridge north of canyon. 427 Comment
  RSA749486  Plantago erecta Fred M. Roberts, Linda Farley 2008-3-28 6815 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork along ridge just west of SR241, 3.4 km E Robber's Peak, Irvine Land Conservancy. 437 Comment
  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
  UCR5210  Plantago erecta Barbara T. Gittins, O. F. Clarke 1966-3-19 893 Orange Pacific slope, Irvine Ranch, east of University of California Irvine campus, Newport Beach 91 Comment
  UCSB47575  Plantago erecta Roberts, Fred 1980-4-3 Orange 1.0km NE Dana Hills High School; Dana Point 75 Comment
  RSA762  Plantago hirtella var. galeottiana J. T. Howell 1927-7-27 493 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
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Aug 19 2011
  SD142765  Plantago indica Marsha Hanson 1998-5-22 Orange Huntington Beach, Bolsa Chica Ecological Reserve, west side of lagoon, path by highway Comment
  UCR174191  Plantago major A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33026 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
  UCSB52420  Plantago major Roberts, Fred; Marsh, K. 1982-10-18 Orange Laguna Beach; east flank of Temple Hill, along east margin of Top of the World School 295 Comment
  JEPS4909  Plantago subnuda Lawrence M. Booth 1932-6-17 1208 Orange Bolsas Creek Comment
  RSA424280  Plantago subnuda Anstruther Davidson 1908-5-1 1791 Orange Corona del Mar Comment
  RSA725533  Platanus X acerifolia Fred M. Roberts 2007-9-11 6567 Orange Aliso Viejo: tributary to Aliso Creek on west side of Moulton Pkwy., 0.2 km N Aliso Viejo Pkwy., adj. to Kinder Care Learning Center. 83 Comment
  RSA401707B  Platanus racemosa F. R. Fosberg 1931-6-21 748 Orange Silverado Canyon. Santa Anita Mts. Comment
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Jun 27 2014
  RSA698372  Platanus racemosa R. H. McArthur 1934-2-17 s.n. Orange Gypsum Canyon. 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
  SD218284  Plecostachys serpyllifolia R. E. Riefner Jr. 2004-12-30 04 681 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Highway. Comment
  SD218285  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-3-18 07 153 Orange City of Newport Beach, Dover Beach, Newport Bay, vicinity of Morning Star Ln. and Polaris Dr. Comment
  UC2061643  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08 -312 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Highway. Comment
  CDA34952  Plecostachys serpyllifolia R. E. Riefner Jr. 2009-7-18 09 -151 Orange Dana Point; beach near Salt Creek, vicinity of Ritz Carlton Resort. 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
  UCR256912  Plectritis ciliosa subsp. insignis Naomi Fraga, Duncan S. Bell 2009-5-11 2710 Orange Santa Ana Mountains, Cleveland National Forest, San Juan Loop Trail just west of Sugarloaf Spur Trail 912 Comment
  POM4883  Pluchea odorata D. L. Crawford 1916-7-26 s.n. Orange Aliso Canyon. Comment
  RSA542591  Pluchea odorata Fred M. Roberts, Doug Willick 1988-9-16 4138 Orange Peralata Hills: Oak Canyon Nature Center, Upper Walnut Canyon, 1.0 kilmeter N Robbers Peak. 180 Comment
  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
  RSA472110  Pluchea odorata Albert J. Perkins 1912-8-22 s.n. Orange Aliso Canyon, near Thursteria Ranch Comment
  RSA93085  Pluchea odorata F. W. Peirson 1919-11-8 1299 Orange Aliso Creek. 0 Comment
  RSA933  Pluchea odorata J. T. Howell 1927-10-29 780 Orange Bryant Ranch near Long Beach. 15 Comment
  UCR26067  Pluchea purpurascens John C. Roos 1949-10-1 4684 Orange South Coast, Doheny Beach 0 Comment
  RSA472126  Pluchea sericea Albert J. Perkins 1920-6-12 s.n. Orange Near Serra. Comment
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Nov 1 2013
  UC520003  Pluchea sericea Joseph Andorfer Ewan 1932-7-9 7488 Orange 4 mi below Rincon; Santa Ana River Comment
  UCR220961  Pluchea sericea Dick Newell, Don Millar 2010-4-27 020 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Agua Chinon wash 1/4 mile north of Hwy 241 toll road 226 Comment
  UCR162343  Plumbago capensis Robert DeRuff 1985-1 250 Orange Southern Coast, Newport Beach, Upper Newport Back Bay, along the path from Mariners Drive to North Star Beach 30 Comment
  IRVC1787  Poa annua J. B. Anderson 1966-4-25 619 Orange Santa Ana: 20021 Birch Street. Southern Coastal Comment
  UCR99859  Poa annua Scott D. White 1993-3-5 1129 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  RSA696326  Poa annua Keith E. Hoffmaster 1927-2-17 s.n. Orange Santa Ana Comment
  IRVC22700  Poa scabrella Fred M. Roberts 1985-5-9 1784 Orange Santa Ana Mountains: Upper McVicker Canyon, 1.8km NE Los Pinos Peak. Peninsular Ranges 1113 Comment
  IRVC13913  Poa secunda R. Meinzer 1971-5-24 108 Orange Santa Ana Mountains: Summit of Santiago Peak, upper elevation. Peninsular Ranges Comment
  RSA798603  Poa secunda R. F. Thorne, E. W. Lathrop 1977-5-18 49746 Orange Santa Ana Mountains: summit of Santiago Peak 1733 Comment
  UCR146882  Polycarpon tetraphyllum Kathleen Stockwell 1999-5-30 s.n. Orange South Coast, north of Cristianitos Road, San Clemente 61 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
  UCR158812  Polygala cornuta subsp. fishiae A. C. Sanders, Mark A. Elvin 2005-9-2 31608 Orange Santa Ana Mtns., upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks 881 Comment
  RSA425  Polygala cornuta var. fishiae J. T. Howell 1927-7-3 258 Orange Claymine Canyon near Sierra Peak. 305 Comment
  RSA708537  Polygonum arenastrum Fred M. Roberts, Robert L. Allen, Chris Barnhill 2004-8-21 6102 Orange Caspers Wilderness Park, Hot Springs Cyn., Hot Springs Trail, c.a. 0.16km WSW San Juan Ranger Station, north of SR 74. 212 Comment
  RSA743378  Polygonum aviculare Fred M. Roberts 2008-4-9 6858 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 2, 0.7 km W Marine Institute (Dana Point Harbor). 52 Comment
  UCSB41859  Polygonum aviculare Matkin, Craig 1971-3-19 Orange At the corner of Chapman and Bitterbush in Orange. Comment
  UCR150564  Polygonum hydropiperoides Scott D. White, Matt Carlton 2003-11-20 9868 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 24 Comment
  RSA731946  Polygonum lapathifolium Fred M. Roberts, Sandy Leatherman 2007-11-27 6689 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. c.a. 0.3km S Fairmont Blvd. 118 Comment
  RSA730991  Polygonum punctatum Fred M. Roberts 2006-11-15 6465 Orange Santa Ana Cyn., Santa Ana River, north bank, 1.1 km ENE Imperial Hwy crossing. 85 Comment
  RSA0062672  Polypodiaceae Doug Bell 1949-2-5 s.n. Orange Newport Beach. 6 Comment
  IRVC21327  Polypodium californicum Fred M. Roberts, K. G. Marsh 1984-2-15 1190 Orange Casper's Regional Park: Rancho Carrillo Rd., 4.4km NE Visitors Center; 0.5km ENE Lucas Survey mark. Southern Coastal 415 Comment
  IRVC19905  Polypodium californicum Karlin G. Marsh 1983-6-27 Orange head of Bommer Canyon, Irvine Ranch; in a cave. San Joaquin Hills Comment
  IRVC3040  Polypodium californicum B. Reynolds 1965-4-19 HS0573 Orange Newport Beach; Upper Newport Bay. Southern Coastal Comment
  RSA696613  Polypogon interruptus Rankin s.n. Orange Irvine Park Comment
  IRVC1810  Polypogon monspeliensis J. B. Anderson 1966-4-22 607 Orange San Joaquin Hills: Los Trancos Canyon, along dirt road and near spring. Santa Ana Mountains 122 Comment
  IRVC22745  Polypogon monspeliensis Fred M. Roberts 1985-5-15 1806 Orange San Joaquin Hills: Laguna Canyon; Laguna Lakes, northernmost pond, south margin, 5km ENE Signal Peak. southern coastal 114 Comment
  RSA678719  Polypogon monspeliensis Fred M. Roberts, Michelle Lee 2001-6-29 5504 Orange Rancho Mission Veijo: Chiquita Ridge, 0.3km WnW Rancgo Macian Survey Marker. PCR Vernal Pool 4., (33 33'11N,117 37' 18 W; T7S R7W, NW 1/4sec 21) 226 Comment
  UCR16076  Polypogon monspeliensis N. J. Moriarty 1973-5-20 730520- 6 Orange Huntington Beach, 0.4 miles south of Newland Street on the east side of Pacific Coast Hwy Comment
  UCR170136  Polypogon monspeliensis Jeffrey Ross, R. Zaka 1998-5-2 48 Orange South Coast, North side of San Joaquin Hills; William R. Mason Regional Park, near intersection of Yale Avenue and University Drive 27 Comment
  RSA710595  Polypogon monspeliensis Mark Elvin 2004-5-2 3416 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
  RSA756311  Polypogon viridis A. C. Sanders, Fred M. Roberts 2008-7-3 35703 Orange Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  IRVC176  Polystichum imbricans Mike Munier 1965-4-20 HS 545 Orange Costa Mesa. Southern Coastal Comment
  IRVC25447  Polystichum imbricans subsp. curtum Fred M. Roberts, K. G. Marsh 1987-5-14 3439 Orange Santa Ana Mtns: Upper Trabuco Canyon, Trabuco Canyon Trail, 1.3km NE Los Pinos Peak. Peninsular Ranges 1231 Comment
  CAS-BOT-BC108544  Populus balsamifera R. E. Jr. Riefner 2006-4-8 06 -111 Orange South Coast: San Juan Capistrano (city), San Juan Creek at La Novia Ave. (San Juan Capistrano 7.5' Q.) 21 Comment
  UCR113446  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr., Adrian Wolf 2000-6-24 20- 116 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, Fremont Canyon, N. of Santiago Creek & immediately N. of major stream fork 305 Comment
  UCR138393  Populus balsamifera subsp. trichocarpa Scott D. White, Brian Leatherman 1997-6-12 5327 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
  UCR174187  Populus balsamifera subsp. trichocarpa A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33023 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
  RSA724058  Populus balsamifera subsp. trichocarpa R. E. Riefner 2007-6-12 7 -253 Orange City of San Juan Capistrano. Vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek 152 Comment
  CAS-BOT-BC102593  Populus fremontii Marcus E. Jones 1930-3-3 26533 Orange Santa Ana Mountains Comment
  RSA542355  Populus trichocarpa Fred M. Roberts Jr. 1987-5-12 3437 Orange Santa Ana River: Horseshoe Bend, 3.9km S San Juan Hill; 1.0km ENE Wier Canyon Road bridge. 104 Comment
  RSA725795  Populus trichocarpa R. E. Riefner 2006-9-16 06 -434 Orange Yorba Linda, north of Chapman Ave. c. 1 mile along floodplain of Santa Ana River. 98 Comment
  CLARK-A1528-2064  Porophyllum gracile John C. Roos 1965-6-16 Orange Dana Point Comment
  RSA598970  Porophyllum gracile Scott D. White 1997-3-28 4841 Orange Above Modjeska Canyon, proposed water tank site 425 Comment
  SD144030  Porophyllum gracile Scott D. White 1997-3-28 4841 Orange Santa Ana Mountains, above Modjeska Canyon. 424 Comment
  UCR18864  Porophyllum gracile John C. Roos 1965-6-16 s.n. Orange Dana Point Comment
  RSA1307  Portulaca oleracea J. T. Howell 1928-9-17 s.n. Orange Rancho Santa Ana 152 Comment
  CAS-BOT-BC453827  Potamogeton nodosus I. M. Johnston 1918-9-3 2144 Orange San Joaquin Hills. In Laguna Canon [Canyon] 106 Comment
  UC217958  Potamogeton pectinatus P. A. Munz 1922-9-2 6348 Orange Laguna Canyon 45 Comment
  RSA780831  Potentilla glandulosa subsp. glandulosa Sandy Leatherman 2011-6-2 2011 -19 Orange Peninsular Ranges; Chino-Puente Hills region: 50 meters west of Carbon Canyon Road and Lions Canyon Road in Carbon Canyon in the City of Brea 273 Comment
  SD233356  Prunus avium R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49828 Orange Santa Ana Mountains; Trabuco Canyon, ca. 8 km east of Trabuco Oaks. Deserted orchard. Comment
  RSA613774  Prunus caroliniana B. Pitzer, M. Georgiady 1997-4-5 3078 Orange San Joaquin Hills Crystal Cove State Park, along No Dogs Trail (from parking area, along western bottom edge of ridge between Muddy Canyon and Moro Canyon), to just below intersection with Poles trail 152 Comment
  CAS-BOT-BC300504  Prunus ilicifolia subsp. lyonii O. F. Clarke 2004-3-22 s.n. Orange Santa Ana River Canyon: Santa Ana River on the west side of Featherly Park 110 Comment
  LA208147  Prunus ilicifolia subsp. lyonii Donald Lee Johnson; 1965-1 208147 Orange San Clemente Island, Reservoir Canyon Comment
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Jan 29 2015
  CAS-BOT-BC356379  Pseudognaphalium beneolens John Thomas Howell 1927-7-16 2782 Orange Hills on north side of Santa Ana Canon [Canyon] 152 Comment
  SBBG103896  Pseudognaphalium biolettii B. Pitzer with S. Hemstreet 1992-5-21 1945 Orange State Hwy 74, 1 mi uphill from the 2000 ft marker, and to the left ca .1 mi on an old paved rd; Cleveland National Forest Comment
  SBBG119614  Pseudognaphalium leucocephalum F. M. Roberts 2003-7-24 5963 Orange San Juan Crk, ca. 0.1 km NE of La Novia Bridge, San Juan Capistrano 27 Comment
  UCR222661  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2008-8-5 08- 259 Orange Peninsular Range; Santa Ana Mtns., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, lower Fremont Canyon, main drainage 223 Comment
  UCR281887  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2017-8-14 17- 404 Orange South Coast, city of San Juan Capistrano, San Juan Creek. Immediately east of Hwy I-5, north of San Juan Creek Road along San Juan Creek Trail 25 Comment
  UCR193493  Pseudognaphalium luteoalbum A. C. Sanders, T. B. Salvato 2008-5-13 35358 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
  UCSB48107  Pseudognaphalium luteoalbum Roberts, Jr., Fred 1981-4-12 Orange Santa Ana Mtns.; San Juan Canyon, Hwy. 74, 1.3 km. by road E San Juan Guard Station; 0.9 km. SE Juan Rancho Survey Marker 295 Comment
  UCD135188  Pseudognaphalium microcephalum R. Townsend 1939-12-28 154 Orange Coyote Hills, 2.5 miles northeast of Yorba Linda. Comment
  UC520305  Pseudognaphalium ramosissimum Joseph Andorfer Ewan 1932-7-28 7689 Orange Corona del Mar Comment
  UCR215313  Pseudognaphalium stramineum Fred M. Roberts 2008-3-27 6804 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
  IRVC15160  Pseudosasa japonica D. Van Gorden 1965-5-9 Orange Silverado Canyon. Santa Ana Mountains Comment
  MACF019844  Pseudotsuga macrocarpa C. T. O'Dowd 1975-5-21 3 Orange Santiago Canyon Road, Cleveland National Forest 731 Comment
  RSA5343  Pseudotsuga macrocarpa B. D. Stark 1933-1-4 4493 Orange Bottom of Claymine Canyon. No. end of Santa Ana Mts. 305 Comment
  UC1543165  Psilocarphus Donald G. Nelson 1935-4-15 300 Orange On road from Garden Grove to Cosa Mesa, converging near Costa Mesa, toward main highway from Santa Ana Comment
  IRVC27729  Psilocarphus brevissimus var. brevissimus Mark A. Elvin 2004-5-2 3413 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA562803  Psilocarphus tenellus Steve Boyd 1992-5-19 7426 Orange Southern Santa Ana Mountains San Mateo Canyon Wilderness Area. Western edge of the wilderness along Lucas Canyon Trail from access road to Rancho Carrillo (7S06) N into Aliso Canyon,. 366 Comment
  CAS-BOT-BC506648  Psilotum nudum R. E. Riefner, Jr. 2015-8-27 15 -357 Orange Cit of Newport Beach, N side of North Coast Hwy, E side of La Brea St. 31 Comment
  IRVC14072  Psilotum nudum B. T. Gittins Mar 1967 s.n. Orange California State College at Fullerton; Greenhouse. Southern Coastal Comment
  RSA443843  Pterostegia drymarioides Gordon Marsh, K. G. Marsh 1977-5-2 s.n. Orange Santa Ana Mountains: Pine Canyon, along road above Blue Light Mine. Comment
  CAS-BOT-BC362144  Pulicaria paludosa R. L. Pope 1961-9-1 s.n. Orange Ray Miller Property, east of Fullerton, Santa Ana River Canyon Comment
  CDA7613  Pulicaria paludosa Robert L. Pope 1959-8-14 Orange Ray Miller property, Santa Ana Canyon, east of Fullerton. 0 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
  RSA627756  Pulicaria paludosa Scott D. White 1998-5-31 6568 Orange University of California Irvine Campus, Southwest of Farm School site (now proposed as Student Rec. Ctr.). 37 Comment
  UC1731284  Pulicaria paludosa Dean W. Taylor 1994-6-7 14414 Orange along Backbay Drive at the junction with San Joaquin Hill Drive, Newport Bay Newport Bay; South Coast Region, Newport Bay 6 Comment
  UCR192974  Pulicaria paludosa A. C. Sanders, Fred M. Roberts 2008-6-17 35463 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge on Hicks Canyon Haul Road, c. midway between Foothill Transportation Corridor and Santiago Cyn. Rd. 335 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
  RSA562815  Pyrus communis Steve D. Boyd, Tim S. Ross 1992-5-20 7468 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
  UC1607991  Quercus Donald G. Nelson 1935-3-23 187 Orange hills n. Fullerton Comment
  UC484237  Quercus agrifolia C. B. Wolf 1932-3-6 Orange 1.5 mi below Trabuco Oaks (on Trabuco Canyon Road, w slope Santa Ana Mts.); Santa Ana Mts. 304 Comment
  IRVC22517  Quercus agrifolia var. agrifolia Fred M. Roberts 1985-4-30 1677 Orange Laguna Beach: Temple Hill; at margin of "Dripping Springs Canyon"; 0.4km NNE Top of the World School. Southern Coastal 255 Comment
  UCSC009093  Quercus agrifolia var. agrifolia Al Keuter 2015-3-25 10- 17 -3 Orange SR 133 near Laguna Beach 46 Comment
  RSA590958  Quercus berberidifolia Fred M. Roberts, Karlin G. Marsh 1991-4-10 4766 Orange Laguna Beach: South Laguna, Temple Hill, ridge between upper Hobo Canyon and Aliso Gorge, 1.7 km NW Niguel Hill summit. 213 Comment
  UCR119800  Quercus berberidifolia R. E. Riefner Jr. 2000-3-19 20- 144 Orange Santa Ana Mountains, North Ranch Policy Plan Area, top of Gypsum Canyon, Windy Ridge 518 Comment
  RSA0041589  Quercus berberidifolia E. R. Johnson 1934-1-6 5565 Orange Santa Ana Mts., on slopes of Sierra Peak at about the head of Claymine Canyon. 762 Comment
  RSA443838  Quercus berberidifolia J. W. Johnson 1978-10-8 s.n. Orange Santa Ana Mts: Aliso Canyon - Agua Chinon Canyon Pass. Comment
  RSA595702  Quercus engelmannii J. E. Harrison 1996-10-17 500 Orange Upper Coyote Canyon, San Joaquin Hills, just n of Signal Peak adjacent to S. side of San Joaquin Hills Transportation Corridor (SR-73). 250 Comment
  UCSB52410  Quercus engelmannii Roberts, Fred 1982-7-8 Orange Laguna Niguel; canyon near Pacific Island Dr., 1.4 km. ESE Aliso Peak: 1.1 km. NE Bench Mark 133 207 Comment
  UC5679  Quercus wislizeni W. H. Brewer Jan 1861 137 Orange Santa Ana Mountains 914 Comment
  UC5709  Quercus wislizeni W. H. Brewer Jan 1861 137 Orange Santa Ana Mountains Comment
  IRVC24473  Quercus wislizeni var. frutescens Fred M. Roberts, R. L. Allen 1986-2-23 2595 Orange Santa Ana Mountains; W of Main Divide Truck Trail; 2.1km E Los Pinos Peak. Peninsular Ranges 1115 Comment
  POM18130  Quercus wislizeni var. frutescens P. A. Munz 1923-9-7 7734 Orange Santa Ana Mts. From Holy Jim Canyon to Santiago Peak. 1067 Comment
  RSA68306  Rafinesquia californica G. R. Campbell 1951-5-30 16101 Orange San Juan Canyon, Ortega Hwy, 4 mi. inside west border of Cleveland National Forest. 152 Comment
  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
  RSA678729  Ranunculus californicus var. californicus Fred M. Roberts, Laura Cohen 2000-3-24 5268 Orange Rancho Mission Veijo Land Conservancy: Tributary to Christanitos Cyn., Flagpole Meadow, upper shady Canyon Trail, about 1.6 NW Sycamore Gate. 170 Comment
  IRVC1149  Raphanus sativus C. Duncan 1965-4-4 Orange Newport Beach Comment
  UC1543096  Raphanus sativus Donald G. Nelson 1936-5-29 432 Orange e of Buena Park (on n side of West Commonwealth Avenue, on edge of Fullerton Municipal airport); Fullerton Municipal airport, West Commonwealth Avenue Comment
  UCR240084  Rhamnus californica Dick Newell, Judy Booth 2012-6-3 265 Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, Maple Springs Truck Trail/Silverado Canyon Rd., 1.6 miles ENE of Maple Springs Gate 741 Comment
  RSA734887  Rhamnus californica subsp. californica A. C. Sanders 2008-5-28 35441 Orange Lomas de Santiago, Bee Flat at mouth of Limestone Canyon. 264 Comment
  RSA581437  Rhamnus californica subsp. californica Fred M. Roberts, Gordon Marsh 1989-5-21 4355 Orange Santa Ana Mountains: small tributary canyon to Santiago Canyon, Flemming Regional Park, just E of Modjeska, ca. 3.3 km WSW Laurel Springs. 451 Comment
  RSA801993  Rhamnus crocea R. H. McArthur 1934-9-17 s.n. Orange Gypsum Canyon Comment
  CAS-BOT-BC56037  Rhamnus ilicifolia C. B. Wolf 1931-3-6 1838 Orange 1/2 mile above Trabuco Oaks, Trabuco Canyon, west slope Santa Ana Mts. 457 Comment
  CAS-BOT-BC56041  Rhamnus ilicifolia John Thomas Howell 1927-6-17 2548 Orange hills on north side of Santa Ana Canyon 152 Comment
  CHSC37638  Rhamnus ilicifolia T. B. Devine 1981-7-30 735 Orange Santiago Canyon Road, 1/4 mi W of its junction with Williams Canyon Road. 350 Comment
  LA207818  Rhamnus ilicifolia P. C. Everett; 1935-6-17 7138 Orange Santa Ana Mountains, Coldwater Canyon, 0.5 mi. above Glen Ivy Resort 457 Comment
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Jan 23 2015
  RSA791876  Rhamnus ilicifolia Robert F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49614 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station Comment
  SBBG27365  Rhamnus ilicifolia P. C. Everett 1935-6-19 Orange Trabuco Cyn, 2 mi below (SW) Forest Service Patrol Station 365 Comment
  UC592699  Rhamnus ilicifolia P. C. Everett 1935-6-19 Orange 2 mi below Forest Service Patrol Station; Santa Ana Mts., Trabuco Canyon 365 Comment
  POM201922  Rhus integrifolia L. M. Booth 1932-5-26 1119 Orange Newport Bay. Comment
  SD253896  Rhus integrifolia Jim Riley 2013-12-10 133 Orange San Clemente area; 0.29 miles E intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 74 Comment
  UCR159782  Rhus integrifolia Peter A. Bowler 2003-4-26 s.n. Orange Southern Coastal, UC San Joaquin Freshwater Marsh Reserve; along marsh road 5 Comment
  UCR230234  Rhus integrifolia Dick Newell, Don Millar 2011-3-22 092 Orange Peninsular Range; Santa Ana Mtns., entrance gate to Weir Canyon, 1/3 mile NW of Outdoor Education Center, 2.4 miles NW (309 deg. ) of Irvine Lake dam 173 Comment
  RSA12723  Rhus ovata C. B. Wolf 1934-9-21 6138 Orange Silverado Canyon, at base of Silverado motorway, W slope Santa Ana Mountains. 732 Comment
  SEINET10494685  Rhus ovata Melvin L. Conrad, David B. Dunn 1973-6-13 Conrad 7138 Orange In vicinity of Laguna Beach. Shrub about 4 ft tall. 152 Comment
  UCR220957  Rhus ovata Dick Newell, Don Millar 2010-3-16 14 Orange Peninsular Range; Santa Ana Mtns. Foothills, mouth of Fremont Canyon, 0.25 mi. north of Irvine lake dam face 206 Comment
  UCSB12554  Rhus ovata Huot, J. 1961-3-26 Orange Laguna Canyon Road, 9 miles from Highway 101 304 Comment
  RSA797918  Ribes amarum Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49829 Orange Santa Ana Mountains: Trabuco Canyon, ca. 8 km east of Trabuco Oaks 860 Comment
  RSA735255  Ribes californicum Pomeroy 1929-2-10 71 Orange Silverado Canyon. Comment
  UC1127397  Ribes californicum var. hesperium H. E. Norton 1931-3-14 40 Orange Verdugo Potrero Corona Quadrangle Comment
  RSA648661  Ribes californicum var. hesperium R. E. Riefner Jr. 2000-8-8 20 -720 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  SD247656  Ribes californicum var. hesperium R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49707 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  SD255193  Ribes californicum var. hesperium R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49779 Orange Santa Ana Mountains; Trabuco Canyon. Comment
  RSA0024853  Ribes cereum Jeanne Paxton 1934-2-25 s.n. Orange Sugar Loaf Canyon, Arch Beach. Comment
  HSC25244  Ribes indecorum Richard Spjut 1972-2-22 2224 Orange Coastal strand, near S Laguna Beach along Hwy. 1 0 Comment
  RSA2109  Ribes indecorum Carl B. Wolf 1931-3-6 1833 Orange Trabuco Canyon Road, 1.25 miles below Trabuco Oaks. 305 Comment
  UC484197  Ribes indecorum B. D. Stark 1930-2-21 1475 Orange Black Star Creek 457 Comment
  CAS-BOT-BC168941  Ribes malvaceum B. D. Stark 1932-2-22 2662 Orange Rancho Santa Ana, Santa Ana Canyon, in canyon west of Roundtop Peak 457 Comment
  PASA2256  Ribes malvaceum Frank W. Peirson 1923-5-6 Orange Santiago Peak. Holy Jim Trail near spring 1142 Comment
  UC1127272  Ribes malvaceum J. B. Spring 1931-4-6 29 Orange n Trabujo Canyon; Corona Quadrangle 243 Comment
  LA205475  Ribes malvaceum var. viridifolium W. Pequegnat; 1938-4-16 sn Orange Santa Ana Mountains, Indian Truck Trail 853 Comment
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Aug 29 2015
  RSA101789  Ribes malvaceum var. viridifolium R. Weatherby 1950-2-25 1030 Orange Harding Canyon, Santa Ana Mts. 762 Comment
  RSA184142  Ribes malvaceum var. viridifolium I. L. Wiggins 1966-2-4 20419 Orange Trabuco Canyon, about 1/2 mi. above canyon mouth Comment
  RSA84499  Ribes malvaceum var. viridifolium F. W. Peirson 1923-4-6 3504 Orange Santiago Peak, Santa Ana Mts. Holy Jim trail. 1143 Comment
  UC2042139  Ribes malvaceum var. viridifolium R. F. Thorne and C. W. Tilforth, E. W. Lathrop 1977-4-27 49706 Orange Northern Santa Ana Mountains: Sierra Peak. Comment
  PASA2267  Ribes roezlii Frank W. Peirson 1923-5-6 Orange Santiago Peak 1645 Comment
  POM7068  Ribes speciosum L. T. Street 1919-3-30 2456 Orange Turnball Canyon. Comment
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Sep 5 2013
  RSA539409  Ribes speciosum Fred M. Roberts, Karlin G. Marsh 1989-3-7 4198 Orange Lomas De Santiago: Lomas Ridge, Tributary to Hicks Canyon, 2.3 km W Bee canyon. 157 Comment
  RSA702761  Ribes speciosum Scott D. White, Michael Honer 2004-5-17 10384 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
  UCR140796  Ribes speciosum Robin G. Marushia 2004-5-4 016 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
  RSA2097  Romneya coulteri B. D. Stark 1931-5-18 2054 Orange Santa Ana River bottom, SW of Ranch Houses, Rancho Santa Ana. 122 Comment
  SBBG95105  Romneya coulteri S. D. White 1990-7-17 Orange Coal Cyn, ca. 1 mi S of the mouth of the Cyn near the Cyn bottom 274 Comment
  UCR150611  Romneya coulteri Scott D. White 1997-5-6 5035 Orange Peninsular Ranges; Santa Ana Mountains, Lomas de Santiago; Santiago Canyon, c. 1.5 mi N of Modjeska Canyon 366 Comment
  CAS-BOT-BC92182  Romneya coulteri var. coulteri J. Ewan 1929-6-28 3625 Orange Santa Ana Canyon above Santa Ana. 609 Comment
  POM394  Rorippa curvisiliqua D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon. Comment
  RSA799648  Rorippa palustris Justin M. Wood 2010-9-29 2741 Orange Santa Ana Canyon: Santa Ana River, southwest of Green River Golf Course and north of Hwy 91 and Santa Ana River Trail. 128 Comment
  POM201869  Rosa californica L. M. Booth 1932-6-7 1161 Orange Newport Lagoon. Comment
  POM7014  Rosa californica Philip A. Munz, L. T. Street, G. Williams 1919-5-4 2683 Orange Laguna Canyon. Comment
  POM366440  Rubus ursinus E. Crow 1929-4-7 289 Orange E of Orange County Park. Santa Ana Mtns. Comment
  RSA376  Rubus ursinus J. T. Howell 1927-7-6 280 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  RSA5356  Rubus ursinus B. D. Stark 1933-1-4 4493 Orange Bottom of Claymine Canyon. No. end of Santa Ana Mts. 305 Comment
  RSA699560  Rubus vitifolius Minor Warne 1934-03 s.n. Orange Santa Ana River Banks Comment
  POM201762  Rumex conglomeratus L. M. Booth 1932-6-9 s.n. Orange Santa Ana River, 1 mile from ocean. Comment
  RSA466060  Rumex conglomeratus Louis C. Wheeler 1932-6-22 841 Orange Newport Bay. 1 Comment
  UC1292604  Rumex crispus C. L. Hitchcock and C. V. Muhlick 1964-3-17 23072 Orange 8 mi e Yorba Linda; Santa Ana Canyon Comment
  UC536909  Rumex crispus Lawrence M. Booth 1932-5-12 1051 Orange Newport Bay Comment
  UCR228795  Rumex crispus Dick Newell, Don Millar 2011-5-10 151 Orange Peninsular Range; Santa Ana Mtns., along MWD service road between Outdoor Education Center and Fremont Canyon, 0.2 mi. above Peters Cyn. Rd. 193 Comment
  RSA74870  Rumex crispus Elroy Robinson 1935-6-28 s.n. Orange Anaheim, Santa Fe Railway. Comment
  RSA4502  Rumex hymenosepalus Carl B. Wolf 1932-3-15 2712 Orange 1 mi. W of Atwood, lower end of Santa Ana Canyon. 76 Comment
  RSA539350  Rumex hymenosepalus Fred M. Roberts, Karlin G. Marsh 1989-3-7 4199 Orange Lomas de Santiago: Loma Ridge, Hicks Canyon, 2.3km W Bee Survey Mark. 152 Comment
  RSA201  Rumex maritimus J. T. Howell 1927-7-15 409 Orange Santa Ana River, Rancho Santa Ana [Botanic Garden] 152 Comment
  POM47585  Rumex maritimus I. M. Johnston 1924-8-29 s.n. Orange 3 miles north of Balboa. Comment
  UCR250322  Rumex obtusifolius A. C. Sanders, Fred M. Roberts 2008-8-7 36004 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  UCR107843  Rumex salicifolius Scott D. White 1998-3-24 6231 Orange Irvine. Univ. of Calif. Irvine Campus: Site of proposed Research Park. SW of main campus circle, c. halfway between Berkeley Av. and new freeway (Bonita Cyn) 37 Comment
  UCR16515  Rumex salicifolius Steve Kulju 1974-5-27 s.n. Orange Peninsular Range; Santa Ana Mtns, San Juan Canyon, 16 mi SW of Lake Elsinore on State Hwy 74 488 Comment
  CAS-BOT-BC433862  Rumex salicifolius John Thomas Howell 1927-7-5 2654 Orange Near Horseshoe Bend, Santa Ana River bottom, Santa Ana Canon [Canyon] 152 Comment
  JEPS39862  Rumex salicifolius var. salicifolius Lawrence M. Booth 1932-7-4 1245 Orange Newport Bay Comment
  UC2048893  Rumohra adiantiformis R. E. Riefner Jr. 2016-10-27 16 -402 Orange City of Laguna Beach, Crescent Bay Drive, W of Circle Way. Comment
  RSA0028511  Rupertia physodes N. C. Cooper 1944-6-4 1352 Orange San Juan Canyon, lower camp ground. 457 Comment
  SD257245  Salicornia bigelovii R. E. Riefner Jr. 2003-12-6 03 502 Orange NAD 83; 11S, 0411758E, 3722979N. Costa Mesa, marsh along W side of Santa Ana River, W of 19th Street and Balboa Ave. 9 Comment
  SEINET11941003  Salicornia bigelovii P. H. Raven 1958-1 13561 Orange Salt marsh just N of Surfside Comment
  JEPS59850  Salicornia subterminalis Lawrence M. Booth 1932-5-30 1135 Orange Newport Bay Comment
  POM707  Salicornia virginica D. L. Crawford 739 Orange Beach, Laguna Beach region. Comment
  RSA268  Salicornia virginica J. T. Howell 1927-10-29 788 Orange Bryant Ranch, near Long Beach. 15 Comment
  RSA768501  Salicornia virginica Justin M. Wood 2009-12-1 1392 Orange Santa Ana River: marsh just upstream of Pacific Coast Highway. 0 Comment
  OBI5926  Salix exigua Carl B. Wolf 1932-4-15 2954 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Cyn 120 Comment
  SBBG58937  Salix exigua var. hindsiana C. B. Wolf 1932-7-7 2848 Orange Rancho Santa Ana, Bixby Ave, 1 km W of Hansen Rd, near Los Alamitos 8 Comment
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Apr 11 2014
  UC536932  Salix exigua var. hindsiana Lawrence M. Booth 1932-6-9 1177 Orange 1 mi from ocean Santa Ana R. Comment
  RSA4250  Salix gooddingii Carl B. Wolf 1932-4-8 2950 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon, at southeast corner of pear orchard. 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
  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
  RSA734891  Salix laevigata A. C. Sanders, Mitch Provance 2008-5-20 35425 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago area, Santiago Creek Canyon, c. 3/4 mile blow Modjeska Canyon confluence. 345 Comment
  RSA735200  Salix laevigata Norland 1929-2-9 1 Orange Cypress Comment
  SBBG59101  Salix laevigata C. B. Wolf 1932-4-8 2949 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Cyn 120 Comment
  UC506445  Salix laevigata Carl Hedin and Joseph Ewan 1933-3-19 7686 Orange Comment
  IRVC8760  Salix lasiolepis Charles W. Sexton 1965-2-12 s.n. Orange Newport Beach. Southern Coastal Comment
  LA210190  Salix lasiolepis Lawrence M. Booth; 1932-12-31 1384 Orange Newport Bay Comment
  POM177837  Salix lasiolepis Marcus E. Jones 1930-1-26 25528 Orange Wildwood Camp, Santa Ana River. Comment
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Nov 18 2013
  RSA542510  Salix lasiolepis Fred M. Roberts Jr. 1987-4-21 3388 Orange Aliso Viejo: Aliso Creek, Aliso Creek bike Trail. 3.0 km ENE Moulton Peak. 73 Comment
  RSA0071935  Salix lasiolepis CNPS Accuracy Assessment Team 2014-4-28 898 .1 Orange Black Star Canyon. Comment
  CAS-BOT-BC128463  Salix lasiolepis var. lasiolepis Carl B. Wolf 1932-2-15 2654 Orange Rancho Santa Ana Botanic Garden, north of administration building. 182 Comment
  CAS-BOT-BC128465  Salix lasiolepis var. lasiolepis Ira L. Wiggins 1966-3-22 20550 Orange Along stream bank, bottom of Silverado Canyon, about 5 mi above Ranger Station, Cleveland National Forest Comment
  CAS-BOT-BC126304  Salix sessilifolia Carl B. Wolf 1932-3-16 2714 Orange Rancho Santa Ana, Santa Ana River bottom 121 Comment
  CAS-BOT-BC126314  Salix sessilifolia Carl B. Wolf 1932-7-7 3843 Orange Rancho Santa Ana, along ditch on Bixby Ave., 1 km. west of Hansen Road, near town of Los Alamitos 7 Comment
  IRVC9300  Salsola tragus B. T. Gittins 1966-6-22 1415 Orange 0.5mi N Warner on Euclid Ave. Huntington Beach Comment
  UCLA55657  Salvia C. Epling and H. Lewis 1940-4-21 Orange 6 mi e San Juan Capistrano Comment
  POM201685  Salvia apiana L. M. Booth 820 Orange Santa Ana Canyon 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
  UCR188932  Salvia clevelandii Robert DeRuff 2005-5-25 556 Orange Newport Beach, Upper Newport Bay, draw on bluff south of the Interpretive Center near end of Del Mare Avenue 20 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
  RSA651802  Salvia leucophylla Shlomo Gat 1959-5-12 34 Orange Carbon Canyon. Comment
  RSA653189  Salvia leucophylla David Barrios 1991-5-8 22 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 366 Comment
  UCR222877  Salvia leucophylla T. B. Salvato 2010-10-27 5126 Orange South Coast, Dana Point Headlands, Harbor Point Park, south of Scenic Dr. and Cove Rd., beyond the end of Green Lantern St., overlooking Dana Point Harbor 70 Comment
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Dec 1 2016
  CAS-BOT-BC229979  Salvia mellifera John Thomas Howell 1927-6-8 2460 Orange Southern Puente Hills, in the Santa Ana Canon [Canyon] 213 Comment
  RSA434144  Salvia mellifera E. A. McGregor 1964-6-4 s.n. Orange On Highway 74, between Elsinor and San Juan Capistrano. 915 Comment
  UCR191465  Salvia mellifera A. C. Sanders, Fred M. Roberts 2008-4-8 34779 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon 495 Comment
  UCR209372  Salvia mellifera Fred M. Roberts, Linda Farley 2008-3-28 6818 Orange Santa Ana Mountains, Upper Weir Canyon, Irvine Ranch Conservancy, east fork along ridge just west of SR 241, 3.4 km east of Robber's Peak 437 Comment
  RSA3157  Sambucus mexicana C. B. Wolf 1931-7-24 2292 Orange lower end of Carbon Canyon. 152 Comment
  RSA748256  Sambucus mexicana A. C. Sanders, Fred M. Roberts 2008-6-17 35517 Orange Middle section of Weir Canyon, SSE of Walnut Canyon Reservoir. 225 Comment
  OBI5974  Sambucus nigra subsp. caerulea Carl B. Wolf 1931-7-24 2292 Orange Upper sonoran. Ravine at Olinda, lower end of Carbon Cyn 152 Comment
  RSA588796  Sanicula arguta Fred M. Roberts, Dave Bontrager 1990-4-18 4564 Orange Rancho Mission Viejo: ridge between Christianitos and Gabino Canyons (Riverside Cement Lease Holding), 5.5 km SE Playa Survey Marker. 152 Comment
  RSA681026  Sanicula arguta Fred M. Roberts, D. E. Bramlet 2003-3-13 5573 Orange Donna O Neill Land Conservancy: Ridge west of Christianitos Canyon, 1.6 km NW Sycamore Gate. 197 Comment
  SD144083  Sanicula crassicaulis Scott D. White 1997-3-28 4832 Orange Santa Ana Mts.: above Modjeska Canyon: proposed water tank site. 424 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
  IRVC17131  Sanicula crassicaulis var. crassicaulis A. S. Boughey 1968-4-16 231 Orange Santiago Canyon/Lower Modjeska Cyn, Fleming Property. Santa Ana Mountains Comment
  RSA802286  Sanicula menziesii Keith E. Hoffmaster 1937-4-25 753 Orange Ladd can., Santa Ana Mts. PR8. Comment
  RSA637488  Sanicula tuberosa Valerie L. Soza, LeRoy Gross 1999-6-10 511 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off Main Divide Road. 1524 Comment
  RSA713566  Schedonorus arundinaceus R. E. Riefner Jr. 2005-10-1 5 -701 Orange City of Costa Mesa, South Coast Dr. at Susan Rd. 16 Comment
  RSA729933  Schefflera actinophylla A. C. Sanders, Mark Elvin 2006-12-22 33275 Orange South Coast: Irvine, UCI campus SW of intersection of Jamboree Blvd. and Campus Dr., just outside entrance to UCI Herbarium 15 Comment
  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
  UCSB41776  Schinus molle Kula, Stanley 1964-12-20 Orange Carbon Canyon Rd. Comment
  RSA773561  Schismus barbatus Fred M. Roberts 1999-5-14 5217 Orange Peninsular Ranges; Santa Ana Mts.: Lomas de Santiago, Loma Ridge; Upper Limestone Canyon on slopes above Bolero Spring, 2.4 km NNW Bolero Lookout 451 Comment
  RSA0070787  Schoenoplectus acutus CNPS Accuracy Assessment Team 2014-4-30 9268 Orange Peters Canyon Regional Park. Comment
  POM6359  Schoenoplectus americanus Phillip A. Munz, L. T. Street, G. Williams 1919-5-3 2652 Orange Santa Ana River Canyon. Comment
  UCR193036  Schoenoplectus americanus A. C. Sanders, Fred M. Roberts 2008-6-17 35493 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, West Loma Ridge Spur Road c. 0.8 mi SW of Irvine Lake and 0.9 mi. SE of Sheriff's Training Facility, just east of Hwy 241 280 Comment
  UCR247918  Schoenoplectus americanus Fred M. Roberts 2012-7-18 7673 Orange SAN JOAQUIN HILLS: Newport Beach, Buck Gully, Buck Gully Trail, west end, just east of north terminus of Poppy Street and 2.1 km WNW summit of Pelican Hill 37 Comment
  JEPS83156  Schoenoplectus californicus L. M. Booth 1932-6-9 1176 Orange Coastal Santa Ana River Comment
  RSA793256  Schoenoplectus californicus Robert F. Thorne 1984-1 s.n. Orange Newport Back Bay Comment
  RSA0059073  Schoenoplectus californicus CNPS Accuracy Assessment Team 2014-7-7 9313 Orange San Joaquin Freshwater Marsh Reserve. Comment
  RSA443820  Schoenoplectus maritimus Gordon Marsh 1975-7-28 s.n. Orange Huntington Beach: East Garden Grove-Wintersburg Flood Control Channel (No. C05). Comment
  CAS-BOT-BC111820  Schoenoplectus tabernaemontani Helen D. Geis 1902-11-1 s.n. Orange Santa Ana Peat lands. Comment
  RSA21060  Scirpus acutus var. occidentalis Ramon Valverde 1938-8-4 9444 Orange Rancho Santa Ana, Santa Ana Canyon 122 Comment
  RSA226634  Scirpus acutus var. occidentalis Christopher Davidson, Gerald L. Benny 1971-6-15 1540 Orange Brea Canyon, 0.5 mile N of Central Avenue, along Brea Creek, near Brea Oil Co. wells. Comment
  UC840666  Scirpus californicus P. A. Munz 1922-9-2 6351 Orange Laguna Canyon 45 Comment
  UCR193764  Scirpus cernuus A. C. Sanders, Fred M. Roberts 2008-7-3 35708 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along Weir Canyon Rd. 1.2 mi. SSE of Walnut Canyon Reservoir, below Upper Blind Canyon Rd. 212 Comment
  UCR207546  Scirpus cernuus O. F. Clarke, Roger E. Reinke 2004-11-14 s.n. Orange South Coast, Newport Back Bay 3 Comment
  UC537256  Scirpus maritimus Lawrence M. Booth 1932-5-30 1133 Orange Newport Lagoon Comment
  SD253872  Scirpus microcarpus Jim Riley 2013-10-15 117 Orange San Clemente area; 0.56 miles ESE intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 68 Comment
  RSA732149  Scrophularia californica A. C. Sanders, Fred M. Roberts 2008-4-22 s.n. 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
  UC284873  Selaginella asprella P. A. Munz 1923-9-7 7744 Orange Santiago Peak; Santa Ana Mts. 1706 Comment
  RSA124718  Selaginella bigelovii E. K. Balls, Percy C. Everett 1957-11-25 22841 Orange Upper Trabuco Canyon, 2.2 mi. ne. from entrance to Holy Jim Canyon. 990 Comment
  IRVC22654  Selaginella cinerascens D. Bramlet, W. Wright 1986-5-4 Orange knoll above Segundo Deschecha Canada and west of Christianitos Canyon Rancho Mission Viejo 212 Comment
  IRVC22751  Selaginella cinerascens D. Bramlet, W. Wright 1986-5-4 Orange knoll above Segundo Deschecha Canada and west of Christianitos Canyon Rancho Mission Viejo 212 Comment
  CAS-BOT-BC363480  Senecio californicus P. C. Everett 1935-3-15 6294 Orange Rancho Santa Ana, Santa Ana Canyon near Corner Post 3938 182 Comment
  UC718547  Senecio californicus P. C. Everett 1935-3-15 6294 Orange near corner post 3938 (Rancho Santa Ana, Santa Ana Canyon); Rancho Santa Ana, Santa Ana Canyon 182 Comment
  UCSB52922  Senecio californicus Roberts, Fred 1983-3-10 Orange Dana Point Headlands: south of Dana Strand Rd., 0.8km W Dana Point Harbor; 1.0km SW Richard Henry Dana School 66 Comment
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Dec 12 2018
  RSA5429  Senecio flaccidus var. douglasii B. D. Stark 1933-1-3 s.n. Orange Rancho Santa Ana near pear orchard. 122 Comment
  RSA700498  Senecio linearifolius Scott D. White 2004-6-7 10606 Orange S Coast; Laguna Miguel. Along Pacific Island Dr. 61 Comment
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Oct 23 2007
  UCR146954  Senecio linearifolius Mark A. Elvin 2003-8-24 3011 Orange Southern Coastal, San Joaquin Hills, Irvine, UCI, 100 m N of the intersection of Shady Canyon Drive and Bonita Canyon Road 72 Comment
  UCR177697  Senecio linearifolius Scott D. White 2004-7-7 10606 Orange South Coast, Laguna Niguel, along Pacific Island Drive 122 Comment
  SD231234  Senecio linearifolius var. linearifolius Scott D. White 2004-7-7 10606 Orange South Coast: Laguna Niguel. Along both sides Pacific Island Dr., at and near small unmarked square structure on southwest side of street. Comment
  SD231235  Senecio linearifolius var. linearifolius Scott D. White 2003-7-7 9613 Orange Coastal plain: Irvine. UC Irvine Campus. Directly west of T-intersection of Shady Canyon Cr. w/Bonita Canyon Dr. (=Culver Dr.) 70 Comment
  RSA734612  Senecio vulgaris Keith E. Hoffmaster 328 Orange Santa Ana Comment
  RSA791870  Senecio vulgaris R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49646 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. Comment
  RSA4779  Senecio vulgaris James Snow s.n. Orange Bryant Ranch, near Long Beach. South East 1/4 Section 25, Township 4S, Range 12 W, Station #1 plant #1 Comment
  POM765  Sesuvium verrucosum D. L. Crawford s.n. Orange Laguna Canon. Comment
  RSA719406  Setaria adhaerens Fred M. Roberts, Robert L. Allen 2006-10-8 6429 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  CAS-BOT-BC243594  Setaria parviflora Helen D. Geis 1902-1-1 560 Orange Unspecified Comment
  UCR152761  Sibara virginica D. E. Bramlet 2004-3-26 3542 Orange South Coast, Fairview Park in Costa Mesa, 183 m west of Canyon School and 366 m NW of intersection of Wilson & Canyon Dr. 24 Comment
  RSA542393  Sidalcea malviflora Fred M. Roberts, K. Keane 1988-5-25 3982 Orange Ranch Mission Viejo: Lower Canada Chiquita, 2.5 kilometers SSE Medium Rancho Survey Mark. 82 Comment
  UCR151026  Sidalcea malviflora subsp. sparsifolia Scott D. White 1997-5-6 5040 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
  SEINET6947338  Sidalcea sparsifolia W. P. Vestal, A. G. Vestal 1955-3-24 3453 Orange Trabuco Canyon, 5 miles east of El Toro. Comment
  CAS-BOT-BC434367  Sidotheca trilobata P. C. Everett 1935-6-19 7224 Orange Santa Ana Mts., main divide motorway 1 5/10 mi. below summit of Santiago Peak, E. slope 1310 Comment
  CAS-BOT-BC384499  Silene antirrhina Helen D. Geis 1902-1-1 522 Orange Santiago Canon [Canyon] Comment
  UCR275222  Silene coniflora A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35312 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  POM202105  Silene gallica L. M. Booth 1932-5-12 1016 Orange Newport Bay. Comment
  SFV17356  Silene gallica J. N. Hogue, D. L. Bishop 1998-4-8 102 .1 Orange Santa Ana Mountains San Juan Canyon near Lower San Juan Picnic Area. 396 Comment
  RSA286  Silene gallica J. T. Howell 1928-2-25 834 Orange Near Bee Canyon, Rancho Santa Ana. 152 Comment
  IRVC20496  Silene laciniata subsp. major Fred M. Roberts 1983-5-4 1026 Orange Temple Hill, Upper Rancho Laguna Canyon, 1.7km SSW Top of the World Sch.; 1.4km ENE Cactus Point, Laguna Beach 200 Comment
  POM422  Silene laciniata subsp. major P. A. Munz 1918-5-4 2200 Orange Laguna Beach Comment
  RSA175135  Silene laciniata subsp. major R. F. Thorne 1963-7-26 32842 Orange Tin Mine Canyon above Beek s Spring, Trabuco District, Santa Ana Mountains, Cleveland National Forest. 762 Comment
  RSA438888  Silene laciniata subsp. major M. B. Dunkle 1933-5-30 3375 Orange Santa Ana Canyon. Comment
  SD127342  Silene laciniata subsp. major Reid Moran, Gordon Marsh and Jack Reveal 1977-6-13 24233 Orange Willow Canyon, tributary of Laguna Canyon 124 Comment
  UCR193795  Silybum marianum A. C. Sanders, Fred M. Roberts 2008-7-3 35695 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
  IRVC1174  Sisymbrium irio L. Burns 1965-3-15 Orange Corona del Mar, Bayside Dr. Newport Beach Comment
  RSA649292  Sisymbrium irio R. W. Hufstader 1971-2-28 18 Orange Collected by State College Blvd. north of the campus about one mile. 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
  JEPS64284  Sisyrinchium bellum Alice King 1908-4-19 Orange Santa Ana Mountains Comment
  RSA697825  Sisyrinchium bellum Anonymous s.n. Orange Near Orange Co. Park. 793 Comment
  RSA731989  Sisyrinchium bellum A. C. Sanders, Fred M. Roberts 2008-4-8 34766 Orange Peninsular Range; Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd 457 Comment
  SD236123  Sisyrinchium bellum A. C. Sanders, Fred M. Roberts, Amber ONeal, D. E. Bramlet 2008-5-9 35299 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, along old dirt road, c. 1.25 mi. ESE of Walnut Cyn Reservoir 340 Comment
  UCR140790  Sisyrinchium bellum Robin G. Marushia 2004-4-16 002 Orange Southern Coast, El Moro Canyon, Crystal Cove State Park, Laguna Beach; grassy ridge southwest of No Name Ridge road in park, downhill from pullout and below closed road to park entrance 244 Comment
  IRVC24222  Sitanion jubatum Fred M. Roberts, Karlin G. Marsh, Gordon Marsh 1985-10-1 2279 Orange Silverado Canyon, Silverado Canyon Road, 1.0km by road E junction Santiago Canyon Road. Santa Ana Mountains 320 Comment
  RSA682757  Solanum americanum Scott D. White, Amanda Duchardt 2003-3-27 8851 Orange Santa Ana Mountain Foothills: Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  RSA5935  Solanum americanum Carl B. Wolf 1932-7-7 3837 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
  UCSB48043  Solanum americanum Roberts, Fred 1981-9-26 Orange Newport Beach: Pacific Coast Highway, 0.3km W Newport Blvd.; 0.4km SE Bench Mark 10 3 Comment
  SEINET5571704  Solanum clokeyi H. S. Gentry 1962-1 19831 Orange Huntington Botanical Garden. Comment
  RSA221079  Solanum douglasii E. W. Lathrop 1966-5-1 6258 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland Nat'l Forest, Santa Ana Mountains. 396 Comment
  RSA599185  Solanum douglasii Scott D. White 1997-3-28 4828 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  UCD126938  Solanum douglasii B. Pitzer 1996-4-30 2762 Orange Upper Newport Bay: California Department Fish and Game Ecological Reserve, off (W of) Jamboree Rd. 6 Comment
  UCR102001  Solanum douglasii B. G. Pitzer 1997-3-25 3035 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
  UCR93933  Solanum douglasii B. G. Pitzer 1996-4-30 2803 Orange San Joaquin Hills, Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy) 15 Comment
  UCSB41752  Solanum douglasii Rowlands, Peter 1970-3-6 Orange Trabuco Cyn.; approx 2 mi up cyn from O'Neil Park 396 Comment
  RSA427454  Solanum umbelliferum M. B. Dunkle 1933-5-30 3576 Orange Santa Ana Canyon Comment
  UCR191429  Solanum umbelliferum A. C. Sanders, Fred M. Roberts 2008-4-8 34780 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon 495 Comment
  RSA704887  Solanum umbelliferum Doug Causen 1992-5-1 s.n. Orange one mile W Modjeska Cn. turnoff roadside easement. Comment
  SEINET12274866  Solanum umbelliferum J. F. Bright, Wyman, C. 1933-1 8179 Orange back of La Guna Beach Comment
  RSA0039365  Solanum virginianum Justin M. Wood 2013-9-5 5120 Orange Santa Ana Canyon: Between the Santa Ana River and the Green River Golf Course, in a recently planted restoration area. Roughly 0.5 miles west of the Riverside County Line. 127 Comment
  UCR166729  Solanum xanti Scott D. White, Jennifer H. Jones 2005-3-31 10856 Orange South Coast, City of Laguna Beach. 549 Nyes Place. Proposed home site on c. 0.5 acre. 91 Comment
  RSA473634  Solidago californica M. B. Dunkle 1934-6-18 3967 Orange Upper San Juan Canyon 610 Comment
  RSA7652  Solidago californica E. R. Johnson 1933-9-25 5524 Orange Muddy Springs near Roundtop, Santa Ana Rancho 366 Comment
  RSA801984  Solidago californica Minor Warne 1939-4-7 s.n. Orange Ladd Canyon Comment
  UCR193846  Solidago californica A. C. Sanders, Fred M. Roberts 2008-7-16 35853 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  CAS-BOT-BC364910  Solidago velutina subsp. californica Carl B. Wolf 1933-8-24 5398 Orange Santa Ana Mts. Summit of Santiago Pk. 1731 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
  RSA798089  Sonchus asper R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49582 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  IRVC921  Sonchus oleraceus J. Schram 1965-5-3 Orange Corona del Mar, 564 Seaward Rd. Newport Beach Comment
  RSA184147  Sonchus oleraceus I. L. Wiggins 1966-5-25 20668 Orange Parkway along south side of Nutwood Lane, margin of CSCF campus, 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
  POM202168  Sonchus oleraceus L. M. Booth 1932-7-21 1297 Orange Near Sunset Beach, Anaheim Marsh. Comment
  POM201512  Sorghum bicolor L. M. Booth 837 Orange Santa Ana Canyon Comment
  UCR197681  Sorghum bicolor A. C. Sanders, Fred M. Roberts 2008-9-18 36066 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  CAS-BOT-BC235342  Sorghum halepense Carl B. Wolf 1932-6-13 3724 Orange Fullerton, Malvern & Nicholas Aves. 53 Comment
  IRVC18904  Sorghum halepense Fred M. Roberts 1981-6-24 284 Orange San Juan Capistrano: 3.2km south of Saddleback College on Rancho Viejo Rd. southern coastal 42 Comment
  SEINET182547 Image available Sorghum halepense L. M. Booth 1932-1 1265 Orange Edge of field, Cota Mesa. Orange county. Comment
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Nov 1 2018
  RSA305846  Spartina foliosa James R. Shevock 1972-9-27 2286 Orange Newport Back Bay, Orange County 2 Comment
  RSA483176  Spartina foliosa E. Yale Dawson 1948-8-15 5109 Orange Salt marshes bordering estuaries leading to Bolsas Bay. Comment
  RSA582098  Spartina foliosa Joseph A. Ewan 1932-7-28 7709 Orange East end of Newport Bay Comment
  SBBG57103  Spartina foliosa F. M. Reed 1927-11-25 5676 Orange Anaheim Landing Comment
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May 1 2011
  UC1111637  Spartina foliosa Peter H. Raven 1957-9-28 11379 Orange n limits Surfside Comment
  IRVC2454  Spartium junceum E. Cowper 1964-4-25 s.n. Orange Laguna. Southern Coastal Comment
  IRVC2455  Spartium junceum M. McCartin 1965-5-2 s.n. Orange San Juan Capistrano. Southern Coastal Comment
  RSA0097840  Spergularia macrotheca Norland 1929-4-7 s.n. Orange Los Alimitos. Comment
  UCR12123  Spergularia marina Art Whistler 1966-5-5 s.n. Orange South Coast, Laguna Beach 'near Camp Pendleton Comment
  RSA0098133  Spergularia rubra A. C. Sanders, T. B. Salvato 2008-5-13 35347 Orange Lomas de Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence. 366 Comment
  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
  RSA0098541  Spergularia salina J. T. Howell 1927-6-30 236 Orange Bryant Ranch near Long Beach. 15 Comment
  POM1129  Sporobolus airoides C. B. Bradshaw s.n. Orange Near Anaheim Landing Comment
  UC729887  Sporobolus airoides Carl B. Wolf 1932-7-7 3848 Orange Bixby Ave., 0.7 mi. w. of Hansen Rd., 0.2 mi. w. of s.e. corner of NE 40 of NW 160 of Sect 34 Bryant Ranch Comment
  RSA35669  Stachys ajugoides Clara Mason Fox s.n. Orange Silverado Canyon. Comment
  RSA780827  Stachys ajugoides var. rigida Sandy Leatherman 2011-5-16 2011 -16 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
  POM147494  Stachys rigida subsp. quercetorum F. M. Reed 1928-4-27 5704 Orange Between Laguna and Newport. Comment
  RSA798185  Stachys rigida subsp. quercetorum Robert F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49583 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  RSA681  Stachys rigida subsp. rigida J. T. Howell 1927-7-3 261 Orange Claymine Canyon near Sierra Peak. 305 Comment
  RSA588788  Stachys rigida subsp. rigida Fred M. Roberts, Dave Brotrager 1990-4-18 4574 Orange Rancho Mission Viejo: Chiquita Ridge, just west of Canada Chiquita, 2.9 km N Median Rancho Survey Marker 183 Comment
  SEINET9332031  Stachys rigida var. quercetorum Unknown 2004-5-4 007 Orange Crystal Cove State Park Comment
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Oct 26 2017
  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
  UC484253  Stellaria media C. B. Wolf 1931-3-6 Orange Trabuco Canyon Santa Ana Mts. (Trabuco Camp Grounds, w slope of Santa Ana Mts) 609 Comment
  IRVC23252  Stephanomeria diegensis Fred M. Roberts 1982-7-30 787 Orange Niguel Hill, 0.9km ENE Aliso Peak, Laguna Niguel 260 Comment
  UCR186593  Stephanomeria diegensis Robert DeRuff 1994-1 462 Orange Southern Coast, Newport Beach, Upper Newport Back Bay, Newporter Canyon 8 Comment
  UCR222872  Stephanomeria diegensis T. B. Salvato 2010-10-27 5109 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
  JEPS36875  Stephanomeria exigua subsp. coronaria L. M. Booth 1932-6-17 1205 Orange Bolsa Chica Comment
  UC472148  Stephanomeria virgata subsp. virgata J. Ewan 1931-10-3 5229 Orange between Brea and Olinda Comment
  RSA439  Stillingia linearifolia J. T. Howell 1927-7-5 271 Orange West side, Rancho Santa Ana [Botanic Garden]. 152 Comment
  OBI23448  Stipa cernua Unknown 1970-3-23 2166 Orange 2 mi from San Juan Capistrano on State 74 Comment
  UCR98243  Stipa lepida Scott D. White 1997-3-28 4839 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  RSA0127417  Stipa pulchra Fred M. Roberts 2016-3-17 8012 Orange San Joaquin Hills: City of Irvine, Bommer Canyon, east fork, 0.3 km ESE Cattle Camp near East Fork Trail. 152 Comment
  RSA383489  Stuckenia pectinata Anstruther Davidson 1921-9-1 s.n. Orange Laguna Beach, Orange County Comment
  UC1123319  Styrax officinalis var. redivivus A. Lewis Apr 1934 380 Orange 2 mi ne Santiago Coal Mine; Cleveland National Forest, Corona Quad. Comment
  CAS-BOT-BC402192  Styrax redivivus R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49686 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  CAS-BOT-BC48095  Styrax redivivus Frank W. Peirson 1923-5-5 3493 Orange Trabuco Canyon, Santa Ana Mts. - Near canyon bottom in shade. Comment
  RSA171931  Styrax redivivus Robert F. Thorne 1963-7-26 32849 Orange Near Beek's Spring; Tin Mine Canyon; Trabuco District, Santa Ana Mountains, Cleveland National Forest. 716 Comment
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Apr 25 2011
  RSA763837  Styrax redivivus Doris Bowers 1971-4-19 1695 Orange Santa Ana Mts. 762 Comment
  SD80942  Suaeda californica var. pubescens James Henrickson 1970-7-25 5028 Orange 3.5 miles northwest of Huntington Beach on sandy margin of Bolsa Bay. Comment
  POM48004  Suaeda esteroa I. M. Johnston 1924-8-29 s.n. Orange 2.5 miles north of Balboa. Comment
  RSA624495  Suaeda esteroa L. C. Wheeler 1933-10-21 2223 Orange Newport Bay. 3 Comment
  RSA70016  Suaeda esteroa F. W. Peirson 1924-8-29 5082 Orange 2.5 miles from Balboa on road inland along creek. Comment
  SEINET179446  Suaeda esteroa Lawrence M. Booth 1932-12-13 1373 Orange Newport Bay. Comment
  UC1971448  Suaeda esteroa Louis C. Wheeler 1946-9-28 6385 Orange Newport Bay. Comment
  RSA438628  Suaeda moquinii Albert J. Perkins 1912-10-15 s.n. Orange Field near Newport Road, Santa Ana Comment
  UC536965  Suaeda nigra Lawrence M. Booth 1932-7-4 1247 Orange Newport Lagoon Comment
  UC1007086  Suaeda taxifolia Allan C. Keller 1937-11-26 Orange on U.S. Highway Alternate 101 one mi s Huntington Beach 1 Comment
  UCD99537  Suaeda taxifolia Ronni Stachelek; Bob Anderson, Frances Schropshire 1995-3-23 51 Orange Newport Beach, Upper Newport Bay, Back Bay Dr., ca. 100 m. N of San Joaquin Dr. Comment
  UCR108435  Suaeda taxifolia L. C. Wheeler 1946-9-28 6383 Orange Newport Bay, Newport Bay 5 Comment
  UCSB48369  Suaeda taxifolia Roberts, Dar; Roberts, Fred 1982-4-19 Orange Newport Beach: Corona del Mar, Bayside Dr.; 3.0 km. SSW Corona del Mar High School; E of Balboa Island 3 Comment
  IRVC20319  Symphoricarpos mollis Fred M. Roberts 1983-1-19 855 Orange Park Canyon, west flank Temple Hill, along Park Ave., 1.3km NE Thurston Sch.; 1.7km SE Bench Mark 104, Laguna Beach 194 Comment
  RSA696584  Symphoricarpos mollis R. H. McArthur 1934-4-7 s.n. Orange Ladd Canyon. Comment
  POM18086  Symphoricarpos rotundifolius var. parishii P. A. Munz 1923-9-7 7751 Orange Santiago Peak, Santa Ana Mountains. 1646 Comment
  UC356890  Symphyotrichum lanceolatum var. hesperium L. M. Booth Orange Newport Beach Comment
  CAS-BOT-BC98282  Symphyotrichum subulatum var. parviflorum David D. Keck 1932-9-30 1911 Orange San Clemente, south side of town along highway. Comment
  RSA798543  Tauschia parishii R. F. Thorne, E. W. Lathrop 1977-5-18 49743 Orange Santa Ana Mountains: summit of Santiago Peak 1733 Comment
  RSA699304  Tecoma capensis M. Funakoshi 1941-11-27 s.n. Orange Santa Ana. Comment