Search Results — 2000 specimen records retrieved (1613 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA585489  Abronia maritima R. E. Riefner Jr. 1994-5-22 94 -380 Orange San Mateo Point, W of RR tracks, just N of Orange Co. line marker. Comment
  CAS-BOT-BC229407  Abronia umbellata David D. Keck 1933-9-21 2535 Orange Sunset Beach Comment
  HSC16138  Abronia umbellata B. Francis 1964-5-2 41 Orange Newport Beach Comment
  RSA461006  Abronia umbellata E. S. Spalding 1923-12-1 s.n. Orange Opposite San Juan Capistrano Comment
  JEPS61233  Abronia villosa L. M. Booth 1932-7-25 1308 Orange Coastal Santa Ana River Comment
  UC527619  Abronia villosa C. B. Wolf 1931-7-1 2259 Orange lower end of Santa Ana Canyon Santa Ana Canyon, Atwood 76 Comment
  POM212062  Abronia villosa var. aurita Carl B. Wolf 1931-7-1 2259 Orange Atwood, lower end of Santa Ana Canyon. 76 Comment
  IRVC22784  Acacia mearnsii Fred M. Roberts 1985-6-2 1839 Orange El Camino Real, 0.1km SE Beach Rd., Capistrano Beach 5 Comment
  UCR186429  Acacia redolens Robert DeRuff 1996-3-14 497 Orange Southern Coast, Newport Beach, Newport Back Bay, Big Canyon 3 Comment
  IRVC16141  Acer macrophyllum R. Meinzer, T. Mulroy 1971-4-25 s.n. Orange Santa Ana Mountains: Upper Trabuco Canyon. Peninsular Ranges Comment
  POM8751  Acer macrophyllum Philip A. Munz, R. D. Harwood 1920-4-23 3730 Orange Santa Ana Mountains, along stream, Silverado Canon. 549 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
  UCSB47632  Acer macrophyllum Roberts, Fred 1980-5-3 Orange 2.2km SE Trabuco Peak, Santa Ana Mtns 1234 Comment
  RSA0013961  Achillea millefolium Fred M. Roberts 2008-5-14 6969 Orange Lomas de Santiago: Loma Ridge, upper Bee Flat Cyn. below Loma Ridge Rd., 1.3 km N Bee Peak and 5.4 km NW Bolero Lookout, Irvine Ranch Conservancy. 377 Comment
  UCR192219  Achillea millefolium A. C. Sanders, Fred M. Roberts 2008-5-6 35271 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, upper Limestone Canyon, 2.9 mi. NNW of El Toro 379 Comment
  RSA696051  Achillea millefolium M. Funakoshi 1943-10-23 s.n. Orange Santa Ana. Comment
  RSA542360  Achnatherum coronatum Fred M. Roberts 1988-4-8 3897 Orange Lomas de Santiago: Loma Ridge, Central Linestone Canyon, 4.1 kilometers NNW Bolero Lookout. 323 Comment
  RSA71  Achnatherum coronatum J. T. Howell 1927-6-2 14 Orange Sandstone Ridge, Botany Garden, RSA. 152 Comment
  RSA758893  Achnatherum coronatum A. C. Sanders, Fred M. Roberts 2008-4-22 35006 Orange Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 213 Comment
  SD152858  Acmispon americanus Steve Boyd, Tim Ross 1992-5-20 6463 Orange San Mateo Canyon Wilderness Area; in Lucas Canyon along floor from crossing of Lucas Canyon Trail. 29 Comment
Read comments
Apr 10 2016
  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
  RSA0073642  Acmispon glaber var. glaber Fred M. Roberts 2010-3-12 7180 Orange Southeast Coast: DANA POINT HEADLANDS: Harbor Point Park, South of Green Lantern and west of Dana Point Harbor, c.a. 150 meters SE Interpretive Center. 50 Comment
  IRVC20809  Acourtia microcephala Fred M. Roberts 1982-6-30 711 Orange Pacific Island Drive, 2.0km SE Aliso Peak; 1.3km E Bench Mark 133, Laguna Niguel 130 Comment
  SEINET2429609  Acourtia microcephala Lawrence M. Booth 1932-7-4 1243 Orange Newport Lagoon 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
  CDA33562  Acroptilon repens Nisson 2010-5-19 PDR# 1544178 Orange Seal Beach; 11 College Park Drive. 0 Comment
  CAS-BOT-BC133135  Adenostoma fasciculatum John Thomas Howell 1927-7-29 2873 Orange On N. side of Santa Ana [Canon] Canyon 243 Comment
  UC1544779  Adenostoma fasciculatum D. S. Seigler and E. Rodriguez 1978-5-13 11003 Orange Trabuco Canyon Comment
  RSA12898  Adenostoma fasciculatum var. fasciculatum E. R. Johnson, Percy C. Everett 1935-1-14 6288 Orange Open firebreak on slopes of Sierra Peak, along road to Claymine Canyon 610 Comment
  UCSB41858  Adenostoma fasciculatum var. fasciculatum Fisher, K. 1970-5-15 Orange Tucker Wildlife Sanctuary, Modjeska Canyon 548 Comment
  UCSB48001  Adenostoma fasciculatum var. fasciculatum Roberts, Fred 1980-6-29 Orange Santa Ana Mtns., Viejo Canyon, 0.4km N Calif. Rte 74; 2.2km ENE San Juan Guard Station 341 Comment
  UCR193804  Adiantum capillus-veneris A. C. Sanders, Fred M. Roberts 2008-7-16 35836 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Dripping Springs off Limestone Canyon, c. 7.5 mi. ESE of Tustin 391 Comment
  UCR247503  Adiantum capillus-veneris R. E. Riefner Jr. 2008-7-9 08- 218 Orange South Coast, Laguna Beach, bluff area west of West St and Pacific Coast Hwy 11 Comment
  POM188247  Adiantum jordanii Marcus E. Jones 1931-3-23 28426 Orange Laguna Comment
  RSA1498  Adiantum jordanii J. T. Howell 1929-2-6 1220 Orange Claymine Canyon, Santa Ana Mountains 213 Comment
  RSA0008824  Adiantum jordanii J. T. Howell 1927-6-24 197 Orange Aliso Canyon, Rancho Santa Ana. 274 Comment
  UCR239501  Agave americana A. C. Sanders, Fred M. Roberts 2008-4-8 34737 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  SBBG101679  Agoseris grandiflora S. Boyd with Mistretta 1991-5-9 6198 Orange crest of range at Oak Flat, SE of Sierra Pk, just W of Riverside County line 822 Comment
  RSA697070  Agoseris grandiflora var. grandiflora Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts Comment
  RSA637486  Agoseris retrorsa Valerie L. Soza, LeRoy Gross 1999-6-10 513 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off Main Divide Road. 1524 Comment
  RSA708526  Agoseris retrorsa Fred M. Roberts, Robert L. Allen, Chris Barnhill, Nancy Hatfield 2005-5-30 6238 Orange Modjeska Peak, north slope along summit road, c.a. 50 meters NNW, by air, summit. 1643 Comment
  SEINET3237806 Image available Agrostis pallens A. C. Sanders, Fred M. Roberts 2008-7-16 3581 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, Limestone Canyon. 325 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
  UC729937  Agrostis stolonifera Carl B. Wolf 1932-6-13 Orange Malvern and Nicholas Avenues Fullerton 53 Comment
  CDA1694  Agrostis viridis M. K. Bellue, Johnson 1945-5-8 Orange Right and Hazzard, about 1/2 mile south of Garden Grove. 0 Comment
  UCR193387  Agrostis viridis A. C. Sanders, T. B. Salvato 2008-5-13 35348 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon at mouth of Hangman Tree Canyon and lower Hangman Tree Cyn, c. 1/2 mile below Modjeska Canyon confluence 366 Comment
  CAS-BOT-BC64519  Ailanthus altissima E. R. Johnson 1932-5-1 3704 Orange Rancho Santa Ana, Santa Ana Canyon. Aliso Canyon. 182 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
  CAS-BOT-BC135853  Allium haematochiton P. C. Everett; E. R. Johnson 1935-5-29 7093 Orange Santa Ana Mts., head of Claymine Canyon 731 Comment
  CAS-BOT-BC472785  Allium neapolitanum John Thomas Howell 1956-3-11 30921 Orange Chapman Ave, Fullerton Comment
  JEPS56379  Allium praecox Alice King March 1908 Orange near Orange County Park Comment
  RSA264153  Allium praecox C. W. Tilforth 1977-3-6 1257 Orange Small canyon west of Gypsum Canyon, south side of Santa Ana River, Santa Ana Canyon 152 Comment
  IRVC28639  Allophyllum glutinosum Mark A. Elvin, A. C. Sanders 2005-9-2 4494 Orange Mouth of Lion Cyn, just up stream from Lower San Juan Campground. Santa Ana Mtns 457 Comment
  RSA753419  Allophyllum glutinosum D. E. Bramlet 2008-5-16 4276 Orange Agua Chinon Wash . Site is located 3m north of the access road and 1.1km NE of Hwy 241 229 Comment
  UCD169758  Allophyllum glutinosum R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49604 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. 290 Comment
  RSA5391  Alnus rhombifolia B. D. Stark 1932-12-30 1717 Orange Rancho Santa Ana. River bottom below Mexican houses. 122 Comment
  UCR152756  Alopecurus saccatus D. E. Bramlet 2003-6-8 3462 Orange South Coast, Fairview Park in Costa Mesa, 152 m west of Canyon School and 396 m NW of intersection of Wilson & Canyon Dr. 24 Comment
  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
  UCD97187  Amaranthus albus Ira L. Wiggins 1966-5-4 20658 Orange Along railroad embankment of A.T. and S.F.R.R., on southwest side of Orangethorpe Avenue, near Esperanza siding. Comment
  POM201873  Amaranthus blitoides L. M. Booth 1932-7-25 s.n. Orange Santa Ana River, 1 1/2 miles from ocean. Comment
  UCSB52950  Amaranthus blitoides Roberts, Fred 1983-9-26 Orange Santa Ana Mtns.; Lion Canyon, Chiquito Basin Trail, 3.6 km. NNE Lower San Juan Picnic Ground; 4.0 km SSE Los Pinos Peak 820 Comment
  RSA724073  Amaranthus blitum subsp. emarginatus R. E. Riefner 2004-9-25 4 -442 Orange City of Yorba Linda, N floodplain of Santa Ana River near Yorba Linda Regional Park. 98 Comment
  RSA592066  Amaranthus deflexus R. E. Riefner 1995-7-27 95 -318 Orange S bluff area of San Clemente Beach. 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
  UCD97413  Amaranthus hypochondriacus A. R. Roos 1937-12-2 s.n. Orange Santa Ana. Comment
  POM201937  Amaranthus powellii subsp. powellii L. M. Booth 1932-7-21 1295 Orange Anaheim Creek Comment
  RSA696431  Amaranthus retroflexus Keith E. Hoffmaster 1933-5-22 334 Orange Santa Ana Comment
  IRVC8602  Amblyopappus pusillus J. B. Anderson 1966-4-16 577 Orange Newport Beach; Corona del Mar; Buck Gully; "Little Corona Beach"; moist canyon bottom with small brooklet near stream. Southern Coastal 0 Comment
  JEPS17300  Amblyopappus pusillus L. M. Booth 1932-5-12 1007 Orange Newport Bay Comment
Read comments
Jul 18 2007
  POM202164  Amblyopappus pusillus L. M. Booth 1932-5-12 1007 Orange Newport Bay. Comment
  UC537060  Amblyopappus pusillus P. A. Munz 1934-3-26 13135 Orange dry slopes, ravine Newport Beach 15 Comment
  RSA610217  Amblyopappus pusillus Fred M. Roberts, Julie Vanderwier 1997-4-29 5014 Orange Bolsa Chica Salt Marsh; (US Fish & Wildlife Service cell 60) west of old oil field, 1.1 km. S Chica Survey Mark. 0 Comment
  POM122718  Ambrosia chamissonis Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA234502  Ambrosia chamissonis James Henrickson 1970-7-24 5015 Orange 3 miles NW of Huntington Beach on sandy ''Rabbit'' Island in Bolsa Chica Salt March near Inner Bolsa Bay. 1 Comment
  RSA678452  Ambrosia chamissonis Valerie L. Soza, Kenneth Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1115 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  SD39993  Ambrosia chamissonis Edith A. Purer 1932-8-31 4879 Orange Open areas of sand dunes along Route 101 Comment
  CAS-BOT-BC13768  Ambrosia chamissonis David D. Keck 1933-9-8 2522 Orange Sunset Beach Comment
  CLARK-A1528-146  Ambrosia chamissonis Cesareo Perez 1971-5-15 32 Orange Huntington Beach Comment
  CAS-BOT-BC45061  Ambrosia psilostachya Ira L. Wiggins 1965-11-6 20346 Orange Roadside near well no. 14, Kraemer Oil Estates, near end of county road leading to Rancho Santa Ana. Comment
  JEPS41031  Ambrosia psilostachya L. M. Booth 1932-8-5 1355 Orange Bolsa Creek Comment
  POM202607  Ambrosia psilostachya L. M. Booth 1932-8-5 1355 Orange Bolsas Marsh. 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
  UC537039  Ambrosia psilostachya Lawrence M. Booth 1932-7-19 1277 Orange Bolsas Marsh 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
  UC176003  Ambrosia psilostachya Geo. R. Hall 1914-9-30 Orange Santa Ana Comment
  CDA43036  Ambrosia trifida David Bolton 2014-6-16 PDR# 300 P06039948 Orange Delphia Avenue, Brea. 0 Comment
  UC454543  Ammannia robusta I. J. Condit 1908-7-21 Orange Los Alamitos 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
  RSA7640  Amorpha californica E. R. Johnson 1933-11-3 s.n Orange Bedford Peak Firebreak and Silverado Motorway at Main Divide. Comment
  CAS-BOT-BC177254  Amorpha fruticosa B. D. Stark 1931-10-17 2463 Orange Santa Ana River bottom, Rancho Santa Ana, Santa Ana Canyon 137 Comment
  CAS-BOT-BC177257  Amorpha fruticosa John Thomas Howell 1927-6-6 2449 Orange Santa Ana River bottom, Santa Ana [Canon] Canyon 152 Comment
  RSA679090  Amorpha fruticosa Fred M. Roberts 2003-7-24 5969 Orange San Juan Capistrono: San Juan Creek, c.a. 0.1 km NE La Novia Bridge. Along creek on cobbly sand of wash in open southern willow scrub and mulefat scrub. 27 Comment
  HSC3516  Amsinckia intermedia C. L. Hitchcock, C. V. Muhlick 1964-3-17 23064 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  JEPS61147  Amsinckia intermedia Alice King 1908-1 Orange Anaheim plain Anaheim Comment
  RSA499932  Amsinckia intermedia E. A. Purer, Freda Detmers 1932-3-23 15572 Orange near Huntington Beach. Roadside of Coast Highway Comment
  UC1292600  Amsinckia intermedia C. L. Hitchcock, C. V. Muhlick 1964-3-17 23064 Orange 8 mi e Yorba Linda; Santa Ana Canyon Comment
  UCR230842  Amsinckia intermedia Dick Newell, Don Millar 2011-3-24 093 Orange South Coast, Huntington Beach, just south of Weider Park, 1.2 mile NE of Seapoint and Pacific Coast Hwy, slope overlooking Bolsa Chica 6 Comment
  RSA0089447  Amsinckia intermedia Ken Greby 1985-4-18 17 Orange Alongside Laguna Canyon Rd. approx. 1.5 km. NE from El Toro Rd. 46 Comment
  IRVC217  Amsinckia menziesii var. intermedia J. Schram 1965-4-18 Orange Corona del Mar, Corona Highland Gully [=Buck Gully?]. Newport Beach Comment
  IRVC22644  Amsinckia menziesii var. intermedia B. Jaroslow 1986-3-26 2 Orange Bell Canyon, 2.1km NW Visitor Center, Casper's Regional Park 130 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
  RSA602640  Anagallis arvensis B. Pitzer 1996-4-30 2794 Orange San Joaquin Hills Crystal Cove State Park, south of City of Irvine on State Hwy 1 (Pacific Coast Hwy). 15 Comment
  CDA5480  Anagallis arvensis subsp. arvensis J. McNeill 1969-4-17 3069 Orange U.C. Irvine Campus. Comment
  RSA450866  Andropogon glomeratus Gordon Marsh, Karlin G. Marsh 1978-10-11 s.n. Orange Santa Ana Mountains: San Juan Hot Springs. Comment
  CAS-BOT-BC400332  Anemopsis californica E. Frost 1996-5-11 12 Orange Newport Back Bay, 150 yards in along bike path 7 Comment
  RSA651285  Anemopsis californica Marcy Keys 1981-5-24 81 Orange 3 miles inland from Laguna Beach on Laguna Canyon Rd. Comment
  RSA768  Anthemis cotula J. T. Howell 1927-7-18 425 Orange Santa Ana River bottom, Rancho Santa Ana. 152 Comment
  RSA647882  Anthemis cotula Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-25 71 Orange 1/2 mile south of Chino Hills State Park Boundary. 228 Comment
  RSA0014992  Antirrhinum coulterianum Fred M. Roberts 2008-5-14 6966 Orange Lomas de Santiago: Loma Ridge, upper Bee Flat Canyon below Loma Ridge Rd., 1.3 km N Bee Peak and 5.4 km NW Bolero Lookout, Irvine Ranch Conservancy. 381 Comment
  RSA697  Antirrhinum coulterianum J. T. Howell 1927-6-5 34 Orange Rancho Santa Ana, near east boundary. 152 Comment
  RSA734596  Antirrhinum coulterianum A. C. Sanders, Fred M. Roberts 2008-5-6 35225 Orange Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin. 216 Comment
  UCR239651  Antirrhinum coulterianum Fred M. Roberts, Kay Stewart, Pamela Pallete, Bob Greenberg 2012-5-6 7547 Orange Santa Ana Mountains, Hot Springs Canyon, along San Juan Trail, 1.1 km north-northeast of San Juan Fire Station 351 Comment
  RSA425786  Antirrhinum coulterianum Francis W. Pennell, C. Epling 1940-4-21 s.n. Orange 5 miles east of San Luis Capistrano Comment
  JEPS83328  Antirrhinum kelloggii David M. Thompson 1983-5-11 301 Orange On private road up Williams Canyon, about 0.3 miles up from Santiago Canyon Road. El Toro Quad. (7.5', 1968) 365 Comment
  RSA701675  Antirrhinum nuttallianum L. C. Hull 1939-9-8 s.n. Orange Laguna Hills Comment
  JEPS4277  Antirrhinum nuttallianum subsp. nuttallianum Alice King May 1908 Orange Newport Beach Comment
  POM354914  Antirrhinum nuttallianum subsp. nuttallianum M. B. Dunkle 1934-6-18 3994 Orange San Juan Canyon; Southern Coastal 305 Comment
  UCSB50648  Aphanes occidentalis Marsh, K. 1984-2-17 Orange Casper's Regional Park: Cyn. north of Carillo Road, c.a. 1.6km NE Visitor Center 150 Comment
  POM219101  Aphanisma blitoides F. M. Reed 1932-3-8 7246 Orange Arch Beach Comment
  RSA699125  Apiastrum angustifolium J. R. Bruff 1927-3-16 22 Orange Newport Bluff Comment
  UCR100451  Apium graveolens B. G. Pitzer 1996-4-30 2771 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  POM324025  Aptenia cordifolia Greg Wright 1971-7-17 314 Orange Pacific Coast Highway south of Laguna, Aliso Creek, inland from highway. 8 Comment
  RSA38679  Aquilegia formosa P. A. Munz 1946-10-26 11619 Orange Botanic Garden. Comment
  RSA267966  Aralia californica E. W. Lathrop 1977-6-16 7656 Orange Silverado Canyon, Santa Ana Mts, Orange County, Cleveland National Forest Trabuco District. Along road bank at Big cone Springs on the Maple Springs road 1280 Comment
  IRVC18334  Aralia californica Gordon A. Marsh, K. G. Marsh Orange [Silverado Canyon], Bigcone Springs. Santa Ana Mountains 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
  UCR282324  Arctostaphylos glandulosa A. C. Sanders, Yi Huang 2017-3-3 42703 Orange Peninsular Range; Santa Ana Mtns., North Main Divide Road, 6.5 km north of Hwy 74, at junction to Blue Jay and Falcon Camps 1038 Comment
  POM254923  Arctostaphylos glandulosa subsp. glandulosa W. Pequegnat 1940-6-19 s.n. Orange Main Divide Road, between Pleasants and Bedford Peaks. Santa Ana Mts. Comment
  POM367266  Arctostaphylos glandulosa subsp. glandulosa E. Crow 1929-2-22 165 Orange Gypsum Canyon, near corona, Santa Ana Mts. Comment
  RSA629331  Arctostaphylos glandulosa subsp. glandulosa Jon E. Keeley 1992-6-12 15513 Orange Rd. 6S06, 1km northeast of Blue Jay Campground, north of El Cariso (Hwy 74) 1050 Comment
  RSA629332  Arctostaphylos glandulosa subsp. glandulosa C. J. Fotheringham, Jon E. Keeley 1996-6-24 27643 Orange Ca. 3 km west of Sierra Peak. 700 Comment
  RSA748171  Arctostaphylos glandulosa subsp. glandulosa K. M. Meyer, A. Townesmith, T. Scott 2007-3-10 2 Orange Cleveland National Forest, 0.5 mi. N Main Divide Rd./NF3S04, off Hwy. 74. Elsinore Mtns., ridge top. 917 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
  RSA0054828  Arenaria douglasii Keith E. Hoffmaster 1936-5-3 723 Orange Santa Ana Mts. (Santiago Peak). 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
  UCR215303  Argyranthemum foeniculaceum Fred M. Roberts 2008-3-27 6814 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
  RSA716656  Argyranthemum frutescens Fred M. Roberts 2005-5-13 6184 Orange San Juan Capistrano; Ortega Ranch Business Center site, between Rancho Viejo Rd. and I-5 freeway adjacent to Horno Creek; 0.6km NE Mission San Juan Capistrano. 54 Comment
  UCR132566  Aristea capitata Robert DeRuff 1985-5-6 116 Orange Southern Coast, Newport Back Bay, near the old salt works 3 Comment
  RSA682760  Aristida purpurea Scott D. White, Amanda Duchardt 2003-3-27 8857 Orange Canyon bottom and west facing slopes above Canada Gobernadora. 91 Comment
  UCD56385  Aristida ternipes var. gentilis D. E. Bramlet; Fred Roberts 2003-3-13 3336 Orange Donna O'Neill Reserve, north east ridgeline 762 m west of Cristianitos Rd., and 1.15 km north of the E-W Access Road. 198 Comment
  JEPS30362  Arnica discoidea Peter H. Raven 1962-5-18 17751 Orange 4.8 miles above gate on Silverado Canyon Truck Trail Santa Ana Mountains 1066 Comment
  POM293902  Artemisia biennis Robert M. Muir 1946-10-24 s.n. Orange Midway between Corona del Mar and Santa Ana. Comment
  POM201782  Artemisia californica L. M. Booth 1932-7-27 1327 Orange Corona del Mar, Newport Bay. Comment
  RSA659354  Artemisia californica P. Shirokawa 1998-5-15 36 Orange Cleveland National Forest- Trabuco Ranger District, 2.3 miles from Ortega Highway (State Highway 74) on North Main Divide Road 960 Comment
  SEINET227962  Artemisia californica Leila M. Shultz 1980-5-2 4040 Orange Orange County: foothills south of Diamond Bar, Chaparral. 213 Comment
  UCR210051  Artemisia californica A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37191 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hangmans Tree Canyon 379 Comment
  UCSB16965  Artemisia californica Gerhart, Janet 1963-2-22 Orange 1.5 miles above locked gate on dirt road, Trabuco Canyon, 17.4 miles east of U.S. Highway 101 at El Toro Marine Base, 2.5 miles by air southeast of Santiago Peak 457 Comment
  CAS-BOT-BC90268  Artemisia douglasiana John Thomas Howell 1927-8-13 2989 Orange Santa Ana River bottom, Santa Ana Canyon 152 Comment
  RSA734898  Artemisia douglasiana A. C. Sanders, Fred M. Roberts 2008-6-17 35461 Orange Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  UCR231349  Artemisia douglasiana A. C. Sanders, Kent Beaman 2011-9-27 39900 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail above Silverado, at major (dry) stream crossing, 3.95 km NNW (347 deg. ) of Santiago Peak 903 Comment
  RSA292462  Artemisia dracunculus James Henrickson 1973-10-21 8052 Orange Eastern Anaheim, 2 blocks E. of Imperial Hwy along La Palma Ave., just N. of Santa Ana River. Comment
  RSA772  Artemisia dracunculus J. T. Howell 1927-7-17 419 Orange Between Tustin and Laguna Beach. 122 Comment
  UC520306  Artemisia dracunculus Joseph Andorfer Ewan 1932-7-28 7687 Orange Corona del Mar Comment
  RSA443828  Artemisia tridentata Gordon Marsh, Karlin G. Marsh 1978-5-20 s.n. Orange Santa Ana Mountains, Coal Canyon, near canyon mouth, extreme north end bordering Santa Ana Canyon Comment
  POM201945  Arthrocnemum subterminale L. M. Booth 1932-5-30 1135 Orange Newport Lagoon Comment
  RSA788913  Arundo donax Fred M. Roberts 2008-9-17 7099 Orange Peninsular Ranges: Yorba Linda: Santa Ana River Canyon, Santa Ana River, 0.7 km W Gypsum Cyn. Rd. bridge, south of La Palma Ave. 107 Comment
  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
  UC729854  Asclepias fascicularis Carl B. Wolf 1932-7-7 3853 Orange about 1 mi e Los Alamitos Blvd. (Bixby Ave., Bryant Ranch, 100 ft. w of se corner of NE40 of NW160 of Sect.32) Comment
  SEINET7113596  Asclepias fruticosa M. B. Sady 1996-6-19 s.n. Orange The University of California, Irvine Arboretum, on Campus Drive, UCI Comment
  RSA743466  Asparagus aethiopicus Fred M. Roberts, Carol A. Roberts 2008-9-28 7118 Orange Dana Point: Dana Point Headlands, CNLM Preserve, near Strands Road Gate, 0.8km WNW Marine Institute, Dana Point Harbor. 65 Comment
  RSA683219  Asparagus asparagoides Scott D. White, Matt Carlton 2003-11-20 9873 Orange Santa Ana Mountain foothills: San Juan Creek in San Juan Capistrano. 37 Comment
  RSA0045439  Asphodelus fistulosus Wendy Boes 2009-3-25 2009 -008 Orange Peninsular Ranges; Santa Ana Mountains; South Main Divide Road. 931 Comment
  UCR79369  Aster radulinus Steve Boyd, Fred M. Roberts 1992-10-14 7715 Orange Northern Santa Ana Mountains, Oak Flats, head of Skyline Rd., near Riverside Co. line 800 Comment
  IRVC25203  Aster subulatus var. ligulatus Fred M. Roberts 1986-11-4 3200 Orange Anaheim Bay, north of Hog Island, Seal Beach Naval Weapons Station 0 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
  UC592754  Astragalus brauntonii Carl B. Wolf 1936-6-22 8000 Orange n slopes Sierra Pk (Claymine Canyon Truck Trail to Sierra Pk); Santa Ana Mts., n slopes Sierra Pk 457 Comment
  UCR170789  Astragalus brauntonii Adrian Wolf, Paul Galvin 2003-8-11 s.n. Orange Santa Ana Mtns., North Ranch Policy Plan Area, Gypsum Canyon 284 Comment
  CAS-BOT-BC186732  Astragalus gambelianus Steve Boyd; Tim 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 of Lucas Canyon Trail, upstream 1/4 mile to spur trail leading to old mining habitations in side canyon 411 Comment
  RSA542542  Astragalus gambelianus Fred M. Roberts 1988-3-15 3848 Orange Rancho Mission Viejo: Verdugo Canyon, 2.6 km ENE Point Rancho Survey Mark 149 Comment
  RSA733876  Astragalus gambelianus A. C. Sanders, Fred M. Roberts 2008-4-8 34748 Orange Peninsular Range: Lomas de Santiago, Loma Ridge, head of Hicks Canyon. S of Santiago Reservoir. 351 Comment
  RSA749305  Astragalus gambelianus Fred M. Roberts 1999-4-21 5178 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
  CAS-BOT-BC194064  Astragalus trichopodus var. lonchus C. B. Wolf 1931-3-6 1860 Orange 1 1/2 miles below Trabuco Camp Ground, Trabuco Canyon, west slope Santa Ana Mts. 548 Comment
  UC1286978 Image available Astragalus trichopodus var. phoxus C. L. Hitchcock 1966-3-15 24141 Orange Stearns Lease, 1 1/2 miles e. of Brea Comment
  UCR203891  Atriplex R. E. Riefner Jr. 2006-10-19 06- 546 Orange city of Lake Forest, c. 0.5 mi north of Alton Parkway on east side of SR-241 230 Comment
  RSA0070791  Atriplex CNPS Accuracy Assessment Team 2014-7-8 9304 Orange Upper Newport Bay Nature Reserve. Comment
  RSA737856  Atriplex amnicola R. E. Riefner 2005-9-9 5 -659 Orange City of Dana Point, beach south of Salt Creek, past Ritz Carlton Hotel on Pacific Coast Hwy. 2 Comment
  RSA737899  Atriplex amnicola R. E. Riefner 2006-4-25 08 -118 Orange City of San Clemente, vicinity of Camino de Los Mares and Calle Nuevo. 45 Comment
  POM293160  Atriplex californica Lyman Benson 1946-4-27 12054 Orange Corona Del Mar; Drainage area: Pacific Ocean. 15 Comment
  UCR106275  Atriplex californica B. G. Pitzer, M. Georgiady 1997-4-5 3085 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
  RSA542649  Atriplex californica Fred M. Roberts 1988-10-12 4159 Orange San Clemente State Park: c.a. 0.2 km SE end of Ave. California along Santa Fe RR. 3 Comment
  CHSC26531  Atriplex canescens James Henrickson 1970-7-24 5018 Orange 3 miles NW of Huntington Beach on sandy 'Rabbit' Island in Bolsa Chico Salt Marsh near Inner Bolsa Bay. At south end of sand area. 0 Comment
  JEPS59536  Atriplex canescens L. M. Booth 1932-7-1 1249 Orange Newport Bay Comment
  RSA452455  Atriplex canescens Albert J. Perkins 1920-6-12 s.n. Orange Corona del Mar Comment
  IRVC25344  Atriplex canescens subsp. canescens Helen Camp 1988-12-7 12 Orange Aliso Canyon, 2.6km NNE Aliso Peak, Aliso-Wood Canyon Regional Park 37 Comment
  UCR252230  Atriplex coulteri Marissa Manahan 2011-5-7 s.n. Orange Newport Beach, Corona Del Mar State Beach; south of Avocado Ave. off Ocean Blvd. 25 Comment
  SD236264  Atriplex glauca D. Bramlet 1994-2-27 2365 Orange Newport Beach 7.5 Quad. Roadside area, some 120 meters east of intersection of Irvine Ave and University Drive, approximately 1 meter south of University Drive. 14 Comment
  UCR191240  Atriplex glauca A. C. Sanders 2008-4-29 35139 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  RSA737232  Atriplex glauca R. E. Riefner 2005-12-13 05 -784 Orange City of Lake Forest, 0l5 miles N of Alton Pwy on E side of SR 241. 230 Comment
  RSA743661  Atriplex glauca R. E. Riefner 2006-6-20 6 -253 Orange City of Rancho Santa Margarita, W side of SR-241 near Los Alisos Blvd. 292 Comment
  RSA743662  Atriplex glauca R. E. Riefner 2006-6-30 6 -334 Orange City of Rancho Santa Margarita, vicinity of Towne Center Dr. and Alton Pkwy. 291 Comment
  SBBG121998  Atriplex glauca R. E. Riefner 2005-12-13 05 -784 Orange ca. 0.5 mi N of Alton Parkway, E side of SR-241; Lake Forest 230 Comment
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Dec 13 2012
  RSA743476  Atriplex lentiformis subsp. lentiformis Fred M. Roberts, Carol A. Roberts 2008-9-28 7112 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  CLARK-A1528-2529  Atriplex leucophylla John C. Roos 1937-2-23 1307 Orange Laguna Beach Comment
  RSA478324  Atriplex leucophylla N. C. Cooper 1942-11-9 884 Orange Balboa Comment
  SD181601  Atriplex leucophylla Valerie Soza, K Clark,L Gross,W Miller,F Roberts,G Wallace 2001-4-4 1117 Orange Anaheim Bay, Seal Beach, U.S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge; Seal Beach 7.5' quad. Coastal sand dunes. 3 Comment
  CAS-BOT-BC180906  Atriplex pacifica I. M. Johnston 1918-5-4 1931 Orange Laguna Beach Comment
  UC444306 Image available Atriplex parishii S. B. Parish and W. F. Parish Oct 1881 1119 Orange Costa Station; ; ; Costa Station, Los Angeles Co. Now in Orange Co Comment
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Jul 11 2007
  RSA689538  Atriplex prostrata R. E. Riefner 2003-8-31 3 -340 Orange Costa Mesa, Talbert Regional Park, Discovery Walk Road and Balboa Avenue. 12 Comment
  IRVC21320  Atriplex rosea Fred M. Roberts 1982-7-31 789 Orange 0.3km NNW Clemente Survey Mark; 1.2km NNE Civiv Center, San Clemente 220 Comment
  UC536972  Atriplex rosea Lawrence M. Booth 1932-8-5 1350 Orange West Newport Beach West Newport Beach (salt marsh) Comment
  POM201893  Atriplex rosea L. M. Booth 1932-8-5 s.n. Orange West Newport Beach Comment
  UCSB52445  Atriplex rosea Ferren, Wayne; Roberts, Jr., Fred 1982-7-21 Orange Newport Beach; Upper Newport Back Bay, Back Bay Dr., parking lot at mouth of Big Canyon; 2.6 km. ENE Newport Harbor High School Comment
  HSC4356  Atriplex semibaccata J. W. Johnson 1961-3-30 Orange Newport Beach, at base of S cliff along N side of Big Canyon. Comment
  RSA743462  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
  SEINET4136251  Atriplex semibaccata M. L. Conrad, David B. Dunn 1973-6-13 7124 Orange In vicinity of Laguna Beach.; 0 Comment
  UCSB44181  Atriplex semibaccata Henneman, J. 1977-5-21 Orange Newport Back Bay 6 Comment
  RSA65402  Atriplex semibaccata Raymond J. Dobbs 1924-7-3 5389 Orange Laguna Beach. Comment
  RSA452383  Atriplex serenana var. davidsonii L. C. Wheeler 1934-1-14 2363 Orange Aliso Creek near Laguna. 76 Comment
  IRVC27507  Atriplex suberecta Mark A. Elvin 2004-5-2 3424 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  SEINET4136211  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.; 0 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
  RSA703646  Atriplex suberecta R. E. Riefner Jr. 1999-5-22 99 -292 Orange City of Dana Point, west of Pacific Coast Hwy., vicinity of Salt Creek Park and Ritz Carlton Hotel. 15 Comment
  RSA741479  Atriplex suberecta R. E. Riefner 2008-5-22 8 -114 Orange Near City of Orange, Santiago Creek, vicinity of Hangman s Tree Canyon, Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
  IRVC25412  Atriplex watsonii Fred M. Roberts, Wayne Ferren 1987-4-8 3359 Orange Upper Newport Back Bay, west side, North Star Beach, 0.8km N Coney Island, Newport Beach 0 Comment
  UC1543075  Atriplex watsonii Donald G. Nelson 1935-6-27 323 Orange s mouth of Newport Bay (on bluffs facing ocean beaches s of Corona del Mar); s of mouth Newport Bay, s of Corona del Mar Comment
  UCD56180  Avena barbata Ira L. Wiggins 1966-3-22 20554 Orange 1/2 mile below entrance to Cleveland National Forest. Floor of Silverado Canyon. Comment
  RSA0042729  Avena barbata David Barrios 1991-5-1 17 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir., Yorba Linda. 365 Comment
  RSA184146  Avena barbata I. L. Wiggins 1966-2-18 20450 Orange 0.5 mile west of entrance to Rancho Santa Ana Comment
  UCR160445  Avena sativa Robert DeRuff 1992-5-29 435 Orange South Coast, Newport Back Bay, just below the bluff top in the Castaways area 15 Comment
  IRVC20498  Azolla filiculoides Fred M. Roberts, M. L. Polek 1983-11-16 1149 Orange Upper Newport Back Bay, near Bayside Dr., 1.0km SSW Bayview School, 3.0km W UCI campus center, Newport Beach 2 Comment
  RSA151095  Baccharis douglasii Peter H. Raven 1961-10-15 16861 Orange Coast Hwy 2 miles SE of Sunset Beach 0 Comment
  RSA598135  Baccharis douglasii Brian Fink 1992-10-7 s.n. Orange Huntington Beach, Salt marsh invaded for several years by fresh water Comment
  RSA93209  Baccharis douglasii F. W. Peirson 1923-9-7 4035 Orange Holy Jim Canyon, trail to Santiago Peak, Santa Ana Mts 595 Comment
  CHSC35829  Baccharis emoryi James Henrickson 1972-10-21 8047 Orange Eastern Anaheim, 2 blocks E. of Imperial Hwy. along La Palma Ave, just N of Santa Ana River. 60 Comment
  RSA232226  Baccharis emoryi James Henrickson 1970-10-3 5361 Orange 2 miles NW of Huntington Beach, common along raised roadsides in southern open portion of Bolsa Chica Salt Marsh. 0 Comment
  JEPS57449  Baccharis glutinosa L. R. Heckard with T. I. Chuang and R. Bacigalupi 1968-7-16 2044 a Orange north of (across U.S. Highway 101 from Huntington State Beach) Newport Beach; Bolsas Marsh Comment
  RSA653416  Baccharis malibuensis R. E. Riefner, Adrian Wolf 2000-8-23 20 -732 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek & immediately S. of major stream fork 305 Comment
  RSA0008327  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08 -175 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 483 Comment
  RSA741697  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08 -173 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Rd. 470 Comment
  UCR103721  Baccharis pilularis B. G. Pitzer, T. Tennant 1997-11-8 3374 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland area between Pacific Coast Hwy and the bike trail. 30 Comment
  UCR150571  Baccharis pilularis Scott D. White, Matt Carlton 2003-11-20 9860 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 24 Comment
  UCSB48036  Baccharis pilularis Roberts, Fred 1981-9-26 Orange Laguna Beach; Pacific coast Highway, 1.1 km. SE El Moro School near Abalone Point 39 Comment
  CDA10394  Baccharis salicifolia D. G. Kelch 2006-12-9 6 .557 Orange Irvine. University Dr along tidal creek just E of I-73. 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
  POM12441  Baccharis salicifolia Philip A. Munz 1922-9-2 6350 Orange Ponds in Laguna Canyon 46 Comment
  POM202374  Baccharis salicifolia L. M. Booth 1932-6-9 1179 Orange Santa Ana River, 1 mile from ocean. Comment
  POM350366  Baccharis salicifolia N. C. Cooper 1949-3-18 3166 Orange Santa Ana Canyon 244 Comment
  RSA308993  Baccharis salicifolia J. R. Shevock 1976-10-28 5354 Orange Saddle below the summit of Pleasants Peak off FS road 3S04, Santa Ana Mts, Cleveland National Forest 1220 Comment
  RSA5325  Baccharis salicifolia B. D. Stark 1932-12-30 4470 Orange Rancho Santa Ana. River bottom below Mexican houses. 122 Comment
  RSA658218  Baccharis salicifolia T. A. Daubert 1991-5-19 649 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
  RSA685928  Baccharis salicifolia Fred M. Roberts 2003-3-27 5627 Orange Rancho Mission Viejo:Donna O'Neill Land Conservancy, Chistianitos Canyon, along North Ride Trail, 1.37 km N Sycamore Gate, 0.36 km W Chistianitos Rd. 114 Comment
  IRVC22976  Baccharis sarothroides Karlin G. Marsh 1986-12-15 Orange Santa Ana Canyon, Santa Ana River, south side, Horseshoe Bend, Yorba Linda 105 Comment
  UCR267220  Baccharis sarothroides Fred M. Roberts, Sandra L. Leatherman 2008-9-3 7091 Orange Santa Ana River Canyon, YORBA LINDA: intersection of La Palma Ave. and Mercado del Rio Street 135 Comment
  RSA734884  Baccharis viminea Kenneth Beard 1934-02 s.n. Orange Beside Santa Ana River at First Street. 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
  RSA735163  Bahiopsis laciniata A. C. Sanders, Fred M. Roberts 2008-5-6 35234 Orange Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin 216 Comment
  SBBG47293  Bassia hyssopifolia R. N. Philbrick 1973-8-31 Orange marsh just E of University of California, Irvine Comment
  UCR109633  Bassia hyssopifolia R. D. Goeden, Don W. Ricker 1965-7-7 s.n. Orange Tustin township, near Peters Canyon Channel, east of Santa Ana Marine Corps Air Station 61 Comment
  POM184312  Bassia hyssopifolia L. M. Booth 1932-8-5 1348 Orange Mouth of Santa Ana River. Comment
  LA105120  Batis maritima Barry A. Prigge; 1988-6-30 8119 Orange eastern Newport Beach, ca 1100 ft E of Santa Ana River/Greenville-Banning channels along old river channel and SE of oil wells 0 Comment
  POM14338  Batis maritima J. B. Feudge 1922-8-13 s.n. Orange Newport Beach Comment
  UCSB36212  Batis maritima Ferren, Wayne 1980-8-27 Orange In Newport Back Bay W side of Back Bay Drive, ca. 1.5 km. NE of Rt. 1, Newport Beach 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
  UC284232  Bebbia juncea var. aspera P. A. Munz 1923-7-8 7326 Orange Santa Ana River Canon Comment
  RSA797475  Berberis pinnata subsp. pinnata R. F. Thorne 1977-11-21 49988 Orange Santa Ana Mountains: tributary canyon to San Juan Canyon about 2 miles above San Juan Fire Station Comment
  CHSC26010  Beta vulgaris James Henrickson 1970-7-25 5082 Orange 3 1/2 miles NW of Huntington Beach growing along graded inner slope of East Garden Grove- Wintersburg Flood Control Channel near Bolsa Chica Salt Marsh. 2 Comment
  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
  RSA717046  Bidens laevis Fred M. Roberts 2005-10-3 6289 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
  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
  RSA751311  Bloomeria crocea A. C. Sanders, Fred M. Roberts 2008-5-6 35266 Orange Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  UCR194556  Bloomeria crocea A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35329 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
  UCR228783  Bloomeria crocea Dick Newell, Don Millar 2011-5-10 156 Orange Peninsular Range; Santa Ana Mtns., on Lakeview Rd. above Irvine Lake dam 276 Comment
  IRVC26521  Bloomeria crocea Mark A. Elvin 2004-5-22 3449 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA0012750  Bloomeria crocea var. crocea Fred M. Roberts 2012-5-10 7575 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
  SD247271  Bloomeria crocea var. crocea R. E. Riefner Jr. 2014-5-13 14 120 Orange City of San Clemente, Rancho San Clemente Trail, E ca. 0.15 mi from Ave Salvador and S cal. 0.1 mi off Utility Access Road. 238 Comment
  UCR12191  Bloomeria crocea var. crocea Art Whistler 1966-4-27 s.n. Orange Between Laguna Beach and Anaheim, via Laguna Canyon Rd. and probably Route 1 Comment
  CAS-BOT-BC31011  Bolboschoenus maritimus John Thomas Howell 1927-6-30 2618 Orange Alkaline coastal plain 7 miles E of Long Beach. 15 Comment
  UCSB36205  Bolboschoenus maritimus Ferren, Wayne; Whitmore, S. 1980-8-27 Orange Along tidal ditch, in salt marsh of Newport Backbay; just W of Backbay Drive; ca. 3 km. NE of Rt. 1, Newport Beach Comment
  UCR100445  Bolboschoenus maritimus subsp. paludosus B. G. Pitzer 1996-4-30 2772 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR12590  Bolboschoenus maritimus subsp. paludosus J. S. Davis 1972-5-6 720506- 10 Orange South Coast, Newport Beach, between corner of San Joaquin Hills Road & Back Bay Road, & salt marsh flats. 0 Comment
  UC520300  Bolboschoenus robustus Joseph Andorfer Ewan 1932-7-29 7728 Orange Newport Lagoon Comment
  RSA0059072  Bolboschoenus robustus CNPS Accuracy Assessment Team 2014-7-7 9342 .1 Orange San Joaquin Freshwater Marsh Reserve. Comment
  RSA788247  Bothriochloa barbinodis R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49623 Orange Santa Ana Mountains: along Ortega Highway (74), about 1/4 mile above San Juan Fire Station Comment
  RSA747609  Brachypodium distachyon Fred M. Roberts 2000-5-4 5316 Orange Lomas de Santiago: Loma Ridge, Hicks Cyn., west of SR 241, 1.9 km E Rattlesnake Reservoir dam and 2.1 km WSW Bee Peak. 210 Comment
  RSA0067892  Brassica campestris R. W. Hufstader 1971-2-13 11 Orange Collected in Villa Park on Loma St. by the road. 243 Comment
  IRVC14742  Brassica geniculata A. S. Boughey 1968-4-23 214 Orange Black Star Canyon, .5mi below Hidden Ranch; area burned this winter. Santa Ana Mountains Comment
  UCR228806  Brassica geniculata Dick Newell, Don Millar 2011-5-10 149 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
  UCR239637  Brassica geniculata Fred M. Roberts 2012-4-24 7505 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  RSA0015953  Brassica nigra A. C. Sanders 2012-5-2 7688 Orange Lomas de Santiago: Loma Ridge, Las Flores Canyon at west end of ridge 0.4 km ESE Orange County Emergency Operations Center (hill 1311) and 2.4 km WSW Irvine Lake Park. 362 Comment
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Nov 17 2018
  RSA5578  Brassica rapa C. B. Wolf 1932-6-28 s.n. Orange Bryant Ranch: along western half of north boundary of 40 acre Valencia orange grove at Bryant Ave. and Hansen Road. 9 Comment
  RSA0065211  Brodiaea filifolia R. E. Riefner Jr. 2014-5-13 14 -119 Orange City of San Clemente, Rancho San Clemente Trail, east c. 0.15 mi. from Ave. Salvador and south c. 0.1 mi. off Utility Access Rd. 239 Comment
  RSA642460  Brodiaea filifolia Tony Bomkamp 1995-6-5 s.n. Orange Rancho Mission Viejo. Ridgeline and lots 1 mi N of Ortega Hwy and W of Canada Gobernadora. Comment
  RSA588769  Brodiaea jolonensis Fred M. Roberts 1990-5-7 4595 Orange Rancho Mission Viejo: Ridge south of Blind Canyon, TRW Lease Holding, 4.9 km NE Clemente Survey Marker. 152 Comment
  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
  POM1272  Bromus catharticus C. B. Bradshaw s.n. Orange Orange. Comment
  UC1131180  Bromus diandrus A. Lewis Apr 1934 393 Orange San Joaquin Hills 60 Comment
  RSA44  Bromus diandrus J. T. Howell 1927-6-9 67 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA696620  Bromus hordeaceus Keith E. Hoffmaster 1935-3-17 s.n. Orange Near El Toro (Trabuco rd.) Comment
  UCR166791  Bromus inermis subsp. inermis R. E. Riefner Jr. 2005-10-1 05- 702 Orange City of Costa Mesa, South Coast Drive at Susan Road 16 Comment
  CAS-BOT-BC161819  Bromus rubens Ira L. Wiggins 1966-2-18 20449 Orange Near end of County road, 0.5 mile west of entrance to Rancho Santa Ana. Comment
  RSA696610  Bromus rubens Jeanne Paxton 1934-4-21 s.n. Orange Orange County Dam. Comment
  RSA184124  Bromus rubens I. L. Wiggins 1966-3-16 20526 Orange Entrance to Firestone Boy Scout Reservation. Comment
  RSA737894  Calandrinia breweri R. E. Riefner 2008-5-15 08 -82 Orange Irvine Ranch Reserve, N Irvine Ranch, eastern Fremont Canyon area, Black Star SCE road. 549 Comment
  UCR249903  Calandrinia breweri R. E. Riefner Jr. 2008-3-5 08- 31 Orange Santa Ana Mountains, Irvine Ranch Reserve, North Irvine Ranch, south of Windy Ridge Road c. 0.5 mi from West Fork of upper Fremont Canyon 508 Comment
  RSA737845  Calandrinia breweri R. E. Riefner 2008-5-16 08 -86 Orange Irvine Rach Reserve, North Irvine Ranch, lower eastern Fremont Canyon area, Lakeview SCE Rd. 549 Comment
  RSA734813  Calandrinia ciliata A. C. Sanders, Fred M. Roberts 2008-3-25 34576 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
  RSA749635  Calandrinia ciliata D. E. Bramlet 2008-4-28 4245 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
  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
  RSA756071  Callistemon viminalis T. B. Salvato, Billy Deane 2006-10-16 1942 Orange Irvine, San Diego Creek flood control channel, between Michelson Driveand the 405 Fwy. 9 Comment
  CAS-BOT-BC140073  Calochortus E. W. Lathrop 1966-3-23 6098 Orange 4 miles NE of Lake Irvine, Black Star Canyon, Cleveland Nat'l. Forest, Trabuco District Comment
  RSA594817  Calochortus albus Fred M. Roberts, Sandy Leatherman, Brian Leatherman 1994-4-24 4911 Orange Santa Ana Mountains: San Juan Canyon, CA route 74, Lower San Juan Picnic Ground. 354 Comment
  POM13942  Calochortus catalinae William M. Pierce 1922-4-11 s.n. Orange Santa Ana Mountians, Santa Ana Canyon. Comment
  RSA0015003  Calochortus catalinae Fred M. Roberts 2008-5-14 6970 Orange Lomas de Santiago: Loma Ridge, 0.1 km W Bee Peak summit and 3.9 km E Rattlesnake Canyon Reservoir dam. Irvine Ranch Conservancy. 515 Comment
  RSA539373  Calochortus catalinae Fred M. Roberts, Karlin G. Marsh 1989-3-7 4192 Orange Lomas de Santiago: Loma Ridge, tributary to Hicks Canyon, ca. 1.9 kilometers WSW Bee Survey Mark. 134 Comment
  RSA653190  Calochortus catalinae David Barrios 1991-5-1 14 Orange Yorba Linda: 1500 ft. NW of Fairmount Avenue & Quail Circle. 366 Comment
  RSA678167  Calochortus catalinae Mark Elvin, Charles Gorenst 1996-3-16 113 Orange Crystal Cove State Park300m down hill from no brains trail. Comment
  SD232135  Calochortus catalinae Mark Elvin, Charles Gorenst 1996-3-16 113 Orange Coastal Plains & Basins; south Coastal Plain region: Crystal Cove State Park. 300 m down hill from no brains trail. Comment
  RSA0108729  Calochortus catalinae J. T. Howell 1928-3-17 863 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA649065  Calochortus plummerae D. E. Bramlet 2000-6-27 3063 Orange Fremont Canyon ridge road at crossing of Edison transmissionlines. NE of the old mine site, S of junction with Blind Canyon access road. 482 Comment
  RSA678501  Calochortus splendens Fred M. Roberts, Robt. Allen, Carol A. Roberts 2003-5-11 5864 Orange Dana Point Headlands: hilltop, 0.6km SSW Richard Henry Dana School south of Pacific Coast Highway and north of Scenic Drive. 73 Comment
  RSA68633  Calochortus splendens Frank W. Peirson 1924-5-31 4669 Orange 5 miles southeast of Laguna Beach. Comment
  RSA751321  Calochortus splendens A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35291 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  UCR191023  Calochortus splendens A. C. Sanders, Fred M. Roberts 2008-4-22 35013 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  UCSB48059  Calochortus splendens Fritzke, Sue; Roberts, Fred 1982-4-3 Orange Dana Point; Hills, 1.0km N Dana Hills High School; 1.9km W Marco Forster Junior High School 100 Comment
  SEINET7067516  Calochortus weedii A. G. Vestal 1947-6-12 s.n. Orange San Juan Canyon. Coordinate datum: NAD27. UTM Zone 11, 448887mE, 3712881mN. Comment
  RSA0014077  Calochortus weedii var. intermedius Fred M. Roberts 2008-5-27 7003 Orange Lomas de Santiago: Loma Ridge, Hicks Cyn., c.a. 0.2km beyond Hicks Cyn., Gate, 2.2km WNW Bee Peak, Irvine Ranch conservancy 213 Comment
  RSA581433  Calochortus weedii var. intermedius Fred M. Roberts 1989-6-7 4376 Orange Santa Ana Mountains: Upper Gypsum Canyon along divide between Gypsum and Blind Canyon, 6.3 kilometers WSW Sierra Peak. 411 Comment
  RSA588981  Calochortus weedii var. intermedius D. E. Bramlet 1994-6-2 2381 Orange San Joaquin Hills. Ridgeline above ''Act V'' Canyon, 910m west of Laguna Canyon Road (S. of Laguna Bend area) and 457 m south of the intersection w/ the access road to Boat Canyon., The site is found adjacent to the dirt access road on an east-facing slope in the upper portion of the canyon 240 Comment
  RSA588986  Calochortus weedii var. intermedius D. E. Bramlet 1994-6-23 2390 Orange San Joaquin Hills. On ridgetop above Upper Shady Canyon. The site is located 640 m N of the Shady-Camarillo Cyn. Road junction and 1.5 km West of Laguna Cyn. Road. 232 Comment
  RSA649683  Calochortus weedii var. intermedius R. E. Riefner 2000-6-26 20 -580 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and W of Black Star Canyon Road at powerline tower. Comment
  RSA725577  Calochortus weedii var. intermedius Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6537 Orange Upper Fremont Canyon, 5.2km ENE Irvine Lake Spillway and 2.0km WNW Hidden Ranch. 673 Comment
  UCR194552  Calycadenia tenella A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35323 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 0.3 mi. west of Eastern Transportation Corridor (Hwy 241) and 1.45 mi. east of south end of Walnut Canyon Reservoir 335 Comment
  UC7754  Calyptridium monandrum C. W. Hamlin 1896-1 8 Orange Buena Park Comment
  CHSC70486  Calystegia macrostegia R. A. Schlising 1973-6-25 3104 Orange SW of Corona; along dead-end road 2.1 mi SW of junction with Hwy 71. Comment
  RSA747592  Calystegia macrostegia Fred M. Roberts 2000-5-5 5320 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
  CHSC13500  Calystegia macrostegia H. E. Hemasth 1974-4-11 1 Orange Side of road, ca 0.7 mi NE of the Mission San Juan Capistrano on Hwy 74. 36 Comment
  RSA598972  Calystegia macrostegia subsp. arida Scott D. White 1997-3-28 4843 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  RSA0022444  Calystegia macrostegia subsp. arida R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49796 Orange Santa Ana Mountains: Trabuco Canyon. Comment
  RSA683073  Calystegia macrostegia subsp. intermedia Fred M. Roberts 2003-3-13 5591 Orange Donna O'Neill Land Conservancy: Ridge west of Christianitos Canyon, 1,320m NW Sycamore Gate and 880m W Cristianitos Rd. 179 Comment
  RSA697155  Calystegia occidentalis subsp. occidentalis Anonymous s.n. Orange Modjeska's Home. Comment
  RSA678451  Calystegia soldanella Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1114 Orange Anaheim Bay: Seal Beach U. S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  HSC6359  Calystegia soldanella B. Francis 1964-5-2 42 Orange .5 mi. S of Newport Comment
  LA88456  Calystegia soldanella O. H. Kappler; 1943-5-6 411 Orange Huntington Beach Comment
  UCR102028  Camissonia bistorta B. G. Pitzer 1997-3-25 3031 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
  UCR193058  Camissonia bistorta A. C. Sanders, Fred M. Roberts 2008-6-17 35504 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, Windy Ridge Rd., saddle on ridge at head, above the Eastern Transportation Corridor 400 Comment
  RSA134574  Camissonia californica Harlan Lewis, M. Lewis 1957-5-19 1001 Orange Cleveland National Forest. Ortega Highway at western boundary of Forest. Comment
  RSA759152  Camissonia californica Robt. Allen, Lori Whalen 2008-7-5 s.n. Orange Dry foothills along a SW-facing ridge, slong Santiago Truck Trail, 0.5 air miles E of USPF Forest Gate at Modjeska Grade Road. Comment
  RSA585184  Camissonia cheiranthifolia subsp. cheiranthifolia D. Atwood 1993-3-27 17699 Orange Corona Del Mar State Park along Newport Coast Drive. 0 Comment
  HSC16447  Camissonia cheiranthifolia subsp. suffruticosa B. Francis 1964-5-2 43 Orange Newport Beach Comment
  UCR267189  Camissonia cheiranthifolia subsp. suffruticosa Fred M. Roberts 2010-3-12 7181 Orange Southeast Coast, DANA POINT HEADLANDS: Harbor Point Park, South of Green Lantern and west of Dana Point Harbor, c. 150 meters SE Interpretive Center 50 Comment
  RSA507  Camissonia lewisii J. T. Howell 1928-4-7 902 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  RSA542490  Camissonia micrantha Fred M. Roberts, T. Sholars, B. Stechmeyer 1988-3-29 3880 Orange Santa Ana Mountains: Hot Springs Canyon, 0.5 km by road north Hwy 74, 0.9 km ESE Juan Rancho Survey Marker. 223 Comment
  UCR267215  Camissonia micrantha Fred M. Roberts, Lee Ann Caranza 2009-4-7 7143 Orange South Coast Region, DANA POINT HEADLANDS: Dana Point CNLM Preserve, 0.5 km WNW Dana Point Marine Institute at Dana Point Harbor, near Interpretive Center 70 Comment
  JEPS31711  Camissonia strigulosa Alice King March, 1908 Orange Anaheim Plains Comment
  SDSU3324  Camissoniopsis bistorta H. Wedberg 1958-3-29 175 Orange On road around south edge of Newport Bay, about 2.3 miles from Pacific Coast Highway. 3 Comment
  UC1719511  Camissoniopsis cheiranthifolia subsp. cheiranthifolia D. Atwood 1993-3-26 17699 Orange Corona Del Mar State Park along Newport Coast Drive 0 Comment
  JEPS31489  Camissoniopsis cheiranthifolia subsp. suffruticosa L. M. Booth 1932-8-5 1366 Orange Newport Bay Comment
  UC537277  Camissoniopsis cheiranthifolia subsp. suffruticosa Lawrence M. Booth 1932-5-25 1114 Orange Balboa Island Newport Bay Comment
  UC635392  Camissoniopsis cheiranthifolia subsp. suffruticosa H. L. Mason 1926-4-25 2918 Orange 5 mi s Laguna Comment
  RSA0127614  Camissoniopsis intermedia Fred M. Roberts 2016-4-26 8045 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
  IRVC1059  Capsella bursa-pastoris I. L. Wiggins 1966-2-25 20445 Orange Yorba Linda Blvd. near Associated Ave.; roadside near orange grove, full sun. Fullerton Comment
  CAS-BOT-BC37126  Capsella bursa-pastoris Ira L. Wiggins 1966-2-16 20445 Orange Orange grove on north side of Yorba Linda Boulevard, near corner of Associated Road, Fullerton. Comment
  OBI6110  Cardamine californica Carl B. Wolf 1931-1-30 1826 Orange Claymine Cyn, Santa Ana mts 305 Comment
  JEPS53317  Cardaria draba L. M. Booth 1932-5-15 1197 Orange s of Huntington Beach Comment
  RSA697446  Cardaria draba Elisabeth Norland 1929-4-11 54 Orange Cypress. Comment
  HSC4145  Cardionema ramosissimum J. W. Johnson 1961-3-29 Orange Newport Beach, slope overlooking Upper Newport Bay. Comment
  RSA603305  Carduus pycnocephalus Scott D. White 1997-6-12 5330 Orange East of San Juan Capistrano: San Juan Creek between Highway 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi E of I-15 / Hwy 74 junction. 46 Comment
  UCR191008  Carduus pycnocephalus A. C. Sanders, Fred M. Roberts 2008-4-22 35019 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  UCR52601  Carduus pycnocephalus Jeri Hirshberg 1988-6-7 s.n. Orange Santa Ana Mountains, Santa Ana Mountains 275 Comment
  RSA88648  Carex barbarae F. W. Peirson 1924-2-9 4524 Orange Between Wintersberg and the sea. Comment
  UCSB47610  Carex barbarae Roberts, Fred 1980-5-3 Orange Santa Ana Mtns., San Juan Canyon, near mouth of Viejo Cyn.: below Rte. 74; 2.7 km. by road ENE San Juan Guard Station; 0.4 km. WSW Bm 1100 290 Comment
  CAS-BOT-BC118484  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Unspecified Comment
  CAS-BOT-BC118500  Carex praegracilis Helen D. Geis 1902-4-1 506 Orange Santa Ana Comment
  POM202036  Carex praegracilis L. M. Booth 1932-7-1 1234 Orange Anaheim Marsh Comment
  CAS-BOT-BC118487  Carex praegracilis Helen D. Geis 1902-4-1 s.n. Orange Peat Lands Comment
  UC837277  Carex praegracilis Helen D. Geis 1902-1 Orange Comment
  RSA797395  Carex spissa Keith E. Hoffmaster 1934-7-15 s.n. Orange Santa Ana Mts (Modjeska) Comment
  UCR261689  Carex spissa Dick Newell, Judy Booth, Jutta Burger, Bob Huttar 2014-6-29 382 Orange Peninsular Range; Santa Ana Mtns., Silverado Canyon, along Silverado Creek, 0.15 mi. due north of Silverado Canyon Rd. and 0.75 mi. upstream from Blackstar Rd. 328 Comment
  RSA0031762  Carex spissa Robert F. Thorne 1977-11-21 50812 Orange Santa Ana Mountains: San Juan Canyon at San Juan Hot Springs Comment
  RSA737489  Carex triquetra D. E. Bramlet 2008-5-9 4264 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
  RSA751160  Carex triquetra D. E. Bramlet 2008-5-15 4272 Orange Upper Borrego Cyn. 152m east of the access road & 1.7km west of Santiago Cyn Road 450 Comment
  SD40041  Carpobrotus chilensis Edith A. Purer 1932-8-31 4881 Orange Orange county along Route 101 Comment
  UCR220034  Carpobrotus chilensis 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
  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
  RSA678506  Carpobrotus edulis Valerie Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred Roberts, Gary D. Wallace 2001-4-4 1105 Orange Seal Beach National Wildlife Refuge: Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 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
  RSA588797  Castilleja affinis Fred M. Roberts, Dave Bontrager 1990-4-18 4563 Orange Rancho Mission Viejo: ridge between Christanitos and Gabino Canyons (Riverside Cement Lease Holding), 5.5 km SE Playa Survey Marker. 152 Comment
  RSA0010903  Castilleja affinis Shlomo Gat 1959-5-12 35 Orange Hills in Orange county. Comment
  RSA305821  Castilleja applegatei subsp. martinii James R. Shevock 1970-4-25 160 Orange Near Irvine Lake. 305 Comment
  HSC20886  Castilleja exserta subsp. exserta J. W. Johnson 1961-3-29 Orange Newport Beach, N slope overlooking upper Newport Bay Comment
  UCSB17560  Castilleja exserta subsp. exserta Cummings, R. 1963-5-11 Orange 9 miles from San Juan Capistrano on U.S. Highway 101 alternate Comment
  UCSB47597  Castilleja exserta subsp. exserta Roberts, Fred 1980-5-3 Orange 0.1km NE Falcon Group Camp; Santa Ana Mtns 1012 Comment
  RSA699995  Castilleja foliolosa R. H. McArthur 1934-4-7 s.n. Orange Ladd Canyon. Comment
  UCSB47636  Castilleja foliolosa Roberts, Fred 1980-5-3 Orange Main Divide Truck Trail; on north side of road; 0.1 km south of Trabuco Peak; Santa Ana Mtns 1350 Comment
  RSA798095  Castilleja stenantha Robert F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49584 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  RSA696336  Catalpa hybrida Marjorie Moody 1947-05 s.n. Orange No. Main St., Santa Ana, California. Comment
  RSA429527  Caulanthus heterophyllus M. B. Dunkle 1935-3-3 4351 Orange San Juan Canyon. 457 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
  RSA734337  Caulanthus heterophyllus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34623 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 366 Comment
  RSA749316  Caulanthus heterophyllus Fred M. Roberts 1999-4-22 5191 Orange Lomas de Santiago: ridges between Limestone Cyn. and Santiago Creek wash opposite mouth Williams Cyn., 2.0 km SE Silverado Sch. and 2.2 km NNW Bolero Lookout. 400 Comment
  UCR191458  Caulanthus heterophyllus A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34652 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
  UCD114584  Caulanthus lasiophyllus D. E. Bramlet 2008-3-31 4133 Orange Santa Ana Mountains. 305 m E of Upper Hicks Haul Road, in Trib to Limestone Cyn., 1 km S of Santiago Cyn. Road. 311 Comment
  VVC437  Ceanothus crassifolius F. Zaebst 1954-2-23 s.n. Orange Santa Ana Mtns, Coastal side of mtns, 3 mi W of entrance to Silverado Cyn Park; roadside (N. side) 305 Comment
  UC1070733  Ceanothus integerrimus A. Lewis 1934-5-1 420 Orange Trabuco Elsinore quad., Cleveland National Forest 1341 Comment
  RSA12375  Ceanothus megacarpus Carl B. Wolf 1934-3-21 5577 Orange Santa Ana River, Santa Ana Canyon, 1/2 mi. S.W. of Mexican Houses, Rancho Santa Ana. 122 Comment
  RSA542421  Ceanothus megacarpus var. megacarpus Fred M. Roberts 1988-3-9 3341 Orange South Laguna; Hobo Canyon, ca. 0.8km NE Goff island. 49 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
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Aug 23 2013
  SBBG45051  Ceanothus megacarpus var. megacarpus J. T. Howell 1927-6-26 228 Orange Claymine Cyn near Sierra Pk 701 Comment
  UC1070886  Ceanothus megacarpus var. megacarpus H. E. Norton and J. B. Spring 1931-3-28 50 Orange sw of Niguel Hill; Corona quad. 914 Comment
  RSA13146  Ceanothus oliganthus Percy C. Everett 1935-6-19 7234 Orange Main Divide Motorway, Bear Spring. 1220 Comment
  UCSB31584  Ceanothus oliganthus var. oliganthus Proctor, Donald 1962-3-18 Orange Silverado canyon, Santa Ana Mts. 944 Comment
  LA44922  Ceanothus oliganthus var. sorediatus W. Pequegnat; 1938-5-6 sn Orange Santa Ana Mountains, Indian Truck Trail 944 Comment
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Aug 29 2015
  RSA748166  Ceanothus oliganthus var. sorediatus K. M. Meyer, A. Townesmith, T. Scott 2007-3-10 7 Orange Cleveland National Forest, 2 mi. N of Main Divide Rd./NF3S04, off Hwy. 74. 957 Comment
  CAS-BOT-BC51847  Ceanothus papillosus Stark 1933-1-5 10029 Orange 2 mi. S. of summit of Skyline Dr. along rd. to Santiago peak, Santa Anna Mts. 1219 Comment
  HSC46608  Ceanothus papillosus var. roweanus Christopher Davidson 1977-5-18 5598 Orange Santa Ana Mts. Cleveland Nat. Forest. Pleasants Peak (on Orange-Riverside Co. line) 1220 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
  RSA1041  Ceanothus tomentosus var. olivaceus J. T. Howell 1927-6-26 144 Orange Claymine Canyon near Sierra Peak. 213 Comment
  LA97592  Ceanothus verrucosus D. S. Verity; Fred Lang 1972-1-7 sn Orange hills behind South Laguna Comment
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Nov 26 2016
  CAS-BOT-BC184957  Cenchrus longispinus John Thomas Howell 1927-7-18 2795 Orange Santa Ana River bottom, Santa Ana Canon [Canyon]. 152 Comment
  CAS-BOT-BC277102  Centaurea melitensis Ira L. Wiggins 1966-5-25 20663 Orange Along Nutwood Lane, south margin of campus of CSCF, Fullerton Comment
  RSA184117  Centaurea melitensis I. L. Wiggins 1966-5-25 20663 Orange Along Nutwood Lane S margin of campus of CSCF, Fullerton Comment
  UCD130042  Centaurea melitensis C. Davidson; G. Benny 1971-6-15 1549 Orange Brea Canyon, 1/2 mile north of Central Avenue, along Brea Cr, near bridge. Comment
  RSA797405  Centaurea repens Keith E. Hoffmaster 1933-9-24 s.n. Orange Santa Ana. Comment
  IRVC19500  Centaurium venustum Gordon A. Marsh 1983-6-9 s.n. Orange Laguna Beach; intermediate ridge between Arch and Portafina canyons. Southern Coastal Comment
  RSA551  Centaurium venustum J. T. Howell 1927-6-2 15 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA648194  Centaurium venustum Karl Price 1988-4-19 19 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  RSA716092  Centromadia parryi Fred M. Roberts 2006-7-5 6349 Orange Bolsa Chica Ecological Preseve: Bolsa Chica Mesa, 0.8km SSW Chica Survey Marker and 1.4km SE jct. Pacific Coast Hwy. & Warner Ae. 7 Comment
  CAS-BOT-BC288844  Centromadia parryi subsp. australis David D. Keck 1932-9-30 1897 Orange Ca 5 miles S of Santa Ana on road to Newport Beach Comment
  CAS-BOT-BC288847  Centromadia parryi subsp. australis John Thomas Howell 1927-6-30 2615 Orange 7 miles E of Long Beach 15 Comment
  UC935684  Centromadia parryi subsp. australis David D. Keck 1933-9-29 2537 Orange Seal Beach Seal Beach (alkaline fields adjoining tidelands) Comment
  RSA0119680  Cerastium glomeratum Fred M. Roberts 2015-3-10 7925 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
  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
  RSA156045  Cercocarpus betuloides Peter H. Raven 1962-5-18 17753 Orange [Santa Ana Mountains] Main Divide Truck Trail at saddle about 1 mile north of Santiago Peak. 1494 Comment
  RSA698630  Cercocarpus betuloides Dorothy Sammis s.n. Orange Silverado Canyon Comment
  RSA739229  Cercocarpus betuloides Keith E. Hoffmaster 1932-4-17 502 Orange Santa Ana Mts. [Orange/Riverside Cos] Comment
  SD143756  Cercocarpus betuloides Scott D. White 1996-12-20 4637 Orange Santa Ana Mountains: Above Modjeska Canyon: Proposed water tank site. 424 Comment
  SD143757  Cercocarpus betuloides Scott D. White 1997-3-28 4827 Orange Santa Ana Mts: Above Modjeska Canyon: Proposed water tank site 424 Comment
  UCR237920  Cercocarpus betuloides Dick Newell, Judy Booth 2012-6-24 276 B Orange Peninsular Range; Santa Ana Mtns., Cleveland National Forest, on Maple Springs Road 1.9 mi. NE of Maple Springs gate 817 Comment
  CAS-BOT-BC142121  Cercocarpus betuloides var. betuloides Alice Eastwood; John Thomas Howell 1937-4-24 3928 Orange 2 miles east of San Juan Hot Springs Comment
  JEPS45547  Cercocarpus betuloides var. betuloides John Thomas Howell 1927-6-26 2612 Orange Santa Ana Mountains, Claymine Canyon Claymine Canyon; Santa Ana Mountains, Claymine Canyon 243 Comment
  RSA443833  Chaenactis artemisiifolia Gordon Marsh 1978-5-27 s.n. Orange Silverado Canyon. Silverado Canyon Rd, 0.4 mi. E of Post Office at bridge corssing Comment
  UCR192737  Chaenactis artemisiifolia A. C. Sanders, Fred M. Roberts 2008-5-6 35224 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin 216 Comment
  RSA695494  Chaenactis glabriuscula Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts Comment
  SD144055  Chaenactis glabriuscula Scott D. White 1997-3-28 4852 Orange Above Modjeska Canyon: Proposed water tank site. 424 Comment
  UCR138390  Chaenactis glabriuscula Scott D. White, Brian Leatherman 1997-6-12 5344 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
  UCR191239  Chaenactis glabriuscula A. C. Sanders, Fred M. Roberts 2008-4-22 34989 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  UCR234453  Chaenactis glabriuscula Dick Newell, Don Millar 2012-4-10 245 Orange Peninsular Range; Santa Ana Mtns., Lakeside Rd. just off Black Star Canyon Rd., near State Spur Rd. 260 Comment
  UC450954  Chaenactis glabriuscula var. glabriuscula F. A. MacF. 1931-3-1 2969 Orange Laguna Beach Comment
  IRVC598  Chaenactis glabriuscula var. glabriuscula M. Savage 1965-3-21 Orange Irvine Terrace. Newport Beach Comment
  IRVC29873  Chamaesyce Mark A. Elvin, D. Kelch 2006-12-9 5301 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
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Jul 17 2015
  JEPS52361  Chamaesyce serpyllifolia Alice King May 1908 Orange New Port Comment
  RSA798090  Chamaesyce supina R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49581 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  IRVC850  Chamomilla suaveolens L. Burns 1965-4-6 Orange Comment
  RSA685668  Cheilanthes clevelandii T. R. Pray 1956-4-15 1047 Orange San Juan Canyon. Comment
  CDA25888  Chenopodium ambrosioides Mark A. Elvin, B. S. Nerhus 2006-11-4 5246 Orange Southern Coastal; Huntington Beach; 1.5 km southwest of Wintersburg, southwest of junction Slater and Goldenwest; Shipley Nature Center. Comment
  IRVC24288  Chenopodium ambrosioides Fred M. Roberts, G. A. Marsh 1985-10-26 2512 Orange Santa Ana River: adjacent to Huntington Beach; 0.7km SSW Adams Street bridge. southern coastal 4 Comment
  POM201964  Chenopodium ambrosioides L. M. Booth 1932-7-25 1312 Orange Santa Ana River, 1 1/2 miles from ocean. Comment
  POM6323  Chenopodium ambrosioides L. T. Street, G. Williams 1919-5-10 2750 Orange Turnbull Canyon. Near Whittier 305 Comment
  SD136861  Chenopodium berlandieri Steve Boyd, Tim Ross 1994-9-14 8362 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest, Lucas Canyon trail at stream crossing in Aliso Canyon. 341 Comment
  RSA747591  Chenopodium californicum Fred M. Roberts 2000-5-5 5319 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
  UCR192453  Chenopodium californicum A. C. Sanders, Fred M. Roberts 2008-3-25 34577 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
  RSA478522  Chenopodium macrospermum var. farinosum L. M. Booth 1933-9-2 1389 Orange Santa Ana River; flood bed near coast of Orange. Comment
  RSA581663  Chenopodium multifidum Tony Bomkamp 1995-06 s.n. Orange Rancho Mission Viejo, floodplain of Canada Gobernadora W of Casper Regional Park. 140 Comment
  IRVC27496  Chenopodium murale Mark A. Elvin 2004-5-2 3403 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  IRVC385  Chenopodium murale McGuire 1965-4-17 Orange Corona del Mar. Newport Beach Comment
  IRVC405  Chenopodium murale S. Park 1965-3-26 Orange Corona del Mar, alley between Narcissus Ave. and Marigold Ave. Newport Beach Comment
  RSA752040  Chenopodium murale Fred M. Roberts 2008-3-27 6808 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  RSA562753  Chenopodium murale Steve Boyd, Timothy S. Ross 1992-5-19 7429 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
  CLARK-A1528-977  Chenopodium rubrum Patricia A. Andrews 1975-6-26 Orange Capistrano Bay Beach 9 Comment
  RSA478560  Chenopodium rubrum L. M. Booth 1933-9-8 1390 Orange Anaheim Marsh. Comment
  RSA0036641  Chlorogalum pomeridianum var. pomeridianum Robt. Allen 2009-3-29 s.n. Orange Peninsular Ranges; Santa Ana Mountains region: Near Santiago Canyon. Rancho Sonado (Orange County Department of Education). Entrance is along Santiago Canyon Road, 0.23 miles NW of turnoff to Williams Canyon, 1.55 air miles SE of turnoff to Silverado, Canyon. Wild Bill Trail. 364 Comment
  RSA0020609  Chloropyron maritimum subsp. maritimum Naomi Fraga, Joella Simons-Adkins, Taylor Parker 2012-10-10 4143 Orange Newport Aquatic Center 0 Comment
  RSA450089  Chorizanthe fimbriata J. C. Roos 1965-6-16 s.n. Orange Dana Point near Doheney Beach. Comment
  RSA655025  Chorizanthe procumbens D. E. Bramlet 1994-6-23 s.n. Orange San Joaquin Hills. ''Pass area'' between Little Sycamore and Camarillo Canyons. The site is 945m of Camarillo Canyon Road and 5 m west of the existing dirt road. 122 Comment
  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
  RSA743372  Chorizanthe procumbens Fred M. Roberts 2008-4-2 6842 Orange Dana Point: Dana Point Headlands, CNLM Preserve south of NE Gate, 0.5 km W Marine Institute (Dana Point Harbor). 45 Comment
  RSA785186  Chorizanthe procumbens D. E. Bramlet 1983-5-28 1388 Orange Dana Point, 154 m SW of Pacifc Coast Highway 73 Comment
  UCR4086  Chorizanthe procumbens Carole Sims 1965-3-28 s.n. Orange South Coastal Plains, Salt Creek Road off Pacific Coast Highway, between South Laguna and Dana Point 18 Comment
  UCSB52868  Chorizanthe procumbens Roberts, Fred 1983-4-24 Orange 0.5km W Dana Point Harbor; 0.8km SSW Richard Henry Dana School 82 Comment
  POM2200  Chorizanthe staticoides D. L. Crawford 1916-5-5 s.n. Orange Laguna Beach Comment
  POM50441  Chorizanthe staticoides L. R. Abrams 1901-06 1807 Orange Mt. Santiago 915 Comment
  RSA392685  Chorizanthe staticoides Ella M. Kennedy 1923-5-14 s.n. Orange Laguna Beach. Comment
  RSA542527  Chorizanthe staticoides Fred M. Roberts, Kathy Keane 1988-5-25 3992 Orange Rancho Mission Veijo: Lower Canada Chiquita, 2.0 kilometers SSE Medium Rancho Survey Marker. 91 Comment
  CAS-BOT-BC502066  Chrysanthemoides monilifera R. E. Riefner, Jr. 2011-11-26 11 -159 Orange City of Laguna Beach, E side of Paific Coast Hwy, S of Aliso Circle, N of Alisa Creek 12 Comment
  UCR130353  Chrysanthemoides monilifera A. C. Sanders, Mark A. Elvin 2003-10-12 27324 Orange Southern Coastal Slope, Irvine, UCI Arboretum, UCI campus near intersection of Jamboree Blvd. and Campus Dr. 15 Comment
  IRVC17045  Chrysanthemum coronarium J. Schram 1965-4-14 Orange Calif. 1. Laguna Beach Comment
  UCR154287  Chrysanthemum coronarium Mark A. Elvin 2004-5-2 3407 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 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
  POM201617  Cicuta bolanderi L. M. Booth 1333 Orange Newport Lagoon Comment
  RSA0066515  Cirsium californicum R. H. McArthur 1934-5-19 s.n. Orange Trabuco Canyon. Comment
  RSA721121  Cirsium occidentale Anonymous s.n. Orange Lower Trabuco. Comment
  RSA721122  Cirsium occidentale Pomeroy 1929-4-27 s.n. Orange Trabuco. Comment
  CLARK-A1528-1094  Cirsium occidentale Michelle Loef 1973-5-25 250573-2 Orange 91 Comment
  UCR109766  Cirsium occidentale var. californicum R. D. Goeden, Don W. Ricker 1965-6-21 s.n. Orange Dana Point 61 Comment
  IRVC617  Cirsium occidentale var. occidentale C. Orr 1965-3-27 Orange Trabuco Road, 3mi E El Toro Marine Base. El Toro Comment
  RSA788908  Cirsium occidentale var. occidentale Fred M. Roberts 2008-6-26 7060 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
  RSA0013955  Clarkia bottae Fred M. Roberts 2008-5-7 6942 Orange Lomas de Santiago: Loma Ridge, Limestone Ridge between Dripping Spr. and Limestone Cyn., 3.5 km NW Bolero Lookout and 1.7 km E Bee Peak. Irvine Ranch Conservancy. 481 Comment
  UCR210037  Clarkia bottae R. E. Riefner Jr. 2000-6-30 20- 597 Orange Santa Ana Mountains, North Ranch Policy Plan Area, N Fremont Canyon at Donaldson Ranch, adjacent to powerline crossing on W fork of Fremont Cyn drainage 427 Comment
  RSA0059997  Clarkia bottae Karl Price 1988-5-21 48 Orange An unnamed side canyon within Hot Springs Canyon. It is on Hot Springs Canyon Rd., 0.75 mi. North of Ortega Hwy. (74), 12.6 mi. East of San Juan Capistrano. 305 Comment
  POM6353  Clarkia dudleyana L. T. Street, Williams 1919-5-10 2752 Orange Turnbull Canyon. Near Whittier 305 Comment
  UC1280309  Clarkia epilobioides John M. Tucker 1941-5-30 258 Orange 2-3 mi e of w boundary Cleveland National Forest (Ortega Highway) Comment
  HSC17683  Claytonia perfoliata subsp. mexicana J. W. Johnson 1961-4-2 Orange Newport Beach, along Upper Newport Bay. Comment
  RSA610242  Claytonia perfoliata subsp. mexicana Fred M. Roberts, Tony Bomkamp 1997-3-13 4985 Orange RANCHO MISSION VIEJO: Christianitos Canyon near confluence of Gabino Canyon, 5.1km NE Clemente Survey Mark. 85 Comment
  UCR218458  Claytonia perfoliata subsp. mexicana Robert DeRuff 2008-1 563 Orange South Coast, Upper Newport Bay, below intersection of Back Bay Dr. and East Bluff Dr. 12 Comment
  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
  UCR119303  Clematis lasiantha R. E. Riefner Jr., Adrian Wolf 2000-6-1 20- 455 Orange Santa Ana Mountains, North Ranch Policy Plan Area, north of Irvine Lake [Santiago Reservoir] and west of Black Star Canyon, west of dirt access road, W slope of Fremont Canyon. 473 Comment
  RSA542411  Clematis ligusticifolia Fred M. Roberts, Karen Calloway 1988-1-27 3774 Orange San Juan Canyon, Hwy 74, 1.1km SW Lower San Juan Picnic Ground. 403 Comment
  SEINET3821592 Image available Clematis ligusticifolia Lawrence M. Booth 1932-1 1290 Orange Anaheim Marsh Comment
  UC537273  Clematis ligusticifolia Lawrence M. Booth 1932-7-21 1290 Orange Anaheim Marsh Comment
  POM305824  Clematis pauciflora Henry J. Ramsey, Henry J. Ramsey 1937-4-2 1074 Orange Capistrano Canyon. Comment
Read comments
Dec 17 2011
  RSA66773  Cleome isomeris F. W. Peirson 1919-11-8 1922 Orange South of Arch Beach, near Laguna Beach Comment
  RSA752037  Cleome isomeris Fred M. Roberts 2008-3-27 6812 Orange Dana Point: Dana Point Headlands, CNLM Preserve near Outlook 1, 0.5km W Marine Institute (Dana Point Harbor). 45 Comment
  POM78643  Cneoridium dumosum Albert J. Perkins 1914-3-8 s.n. Orange Laguna Beach. Comment
  RSA542395  Cneoridium dumosum Fred M. Roberts Jr. 1987-3-24 3271 Orange Laguna Beach: Goff Ridge, south of Nyes Place Rd., 0.9km NNE Goff Island. 169 Comment
  LA208484  Cneoridium dumosum B. Lower; 1954-4-3 Orange Dry hill behind Laguna Comment
  SD245358  Comarostaphylis diversifolia subsp. diversifolia R. R. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49607 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Base of bllluff with lower slope wet with seepage. Comment
  RSA226637  Conium maculatum Christopher Davidson, G. Benny 1971-6-15 1544 Orange Brea Canyon, 0.5 mile N of Central Avenue, along Brea Creek, near Brea Oil Co. wells. Comment
  RSA234477  Conium maculatum James Henrickson 1970-7-25 5067 Orange 2 miles N of Huntington Beach along NE margin of Bolsa Chica Salt March 0 Comment
  OBI7980  Convolvulus arvensis Kurt R. Neisess 1975-12-20 s.n. Orange In the Fullerton Hills area Comment
  RSA627781  Convolvulus arvensis Scott D. White 1998-3-24 6235 Orange University of California, Irvine Campus: Site of proposed Research Park. Southwest of main campus circle, ca. halfway between Beerkeley Avenue and new freeway (Bonita Canyon). 36 Comment
  UCR109771  Convolvulus arvensis R. D. Goeden, Don W. Ricker 1965-6-15 s.n. Orange NW of El Toro, Tustin Township, near Borrego Canyon Wash, SE edge of El Toro M.C. Air Station 107 Comment
  RSA697150  Convolvulus arvensis Anonymous s.n. Orange Santa Ana Comment
  RSA0045316  Convolvulus subacaulis Ophelia Frost 1932-4-2 s.n. Orange At the Dam above Orange County Road. Comment
  RSA703142  Conyza bonariensis Fred M. Roberts 2003-9-11 6014 Orange Rancho Mission Viejo; Donna O'neill Land Conservancy, Cristianitos Cyn., 0.79 km N of Sycamore Gate, 0.23 km W of Christianitos Road. 126 Comment
  RSA647886  Conyza bonariensis Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-24 57 Orange 1000 ft. north of Chino Hills State Park Boundary 229 Comment
  CLARK-A1528-918  Conyza canadensis Patricia A. Andrews 1975-6-26 5908 Orange Capistrano Bay Beach 9 Comment
  RSA0036109  Conyza canadensis Fred M. Roberts, Carol A. Roberts 2008-9-28 7113 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor) 75 Comment
  RSA725944  Conyza floribunda R. E. Riefner 2006-10-8 06 -481 Orange South Coast: Irvine, San Diego Creek near 405 Freeway, between 405 and Laguna Rd. 51 Comment
  RSA725965  Conyza floribunda R. E. Riefner 2003-12-13 03 -503 Orange South Coast: Los Alamitos, San Gabriel River, vicinity of Chestnut St. and Cerritos Ave. 11 Comment
  SEINET12320812  Cordylanthus maritimus R. A. Schlising 1972-1 Orange Comment
  UCR261705  Cordylanthus maritimus subsp. maritimus Dick Newell, Don Millar, Judy Booth 2015-4-15 408 Orange South Coast, city of Newport Beach, North Star Beach, 90 yards NE of Newport Aquatic Center bulding 3 Comment
  UCR230827  Cordylanthus rigidus Dick Newell, Don Millar, Shara Harris 2011-6-21 188 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agua Chinon Wash 225 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
  UCR239652  Coreopsis gigantea Fred M. Roberts 2012-5-4 7546 Orange San Joaquin Hills, Buck Gully, along San Joaquin Hills Road, just west of Harbor Watch Park, 2.9 km west of Signal Peak 174 Comment
  CAS-BOT-BC101296  Corethrogyne filaginifolia Carl B. Wolf 1933-8-24 5394 Orange Santa Ana Mts. Summit of Santiago Pk. 1731 Comment
  HSC5418  Corethrogyne filaginifolia J. W. Johnson 1961-2-19 Orange Newport Beach, marine terrace above upper Newport Bay. Comment
  UCSB52942  Corethrogyne filaginifolia Roberts, Fred 1983-11-4 Orange Santa Ana Mtns.; between Flacon and Blue Jay campgrounds; along Main Divide Truck Trail, 2.1 km. ESE Los Pinos Peak 1090 Comment
  PASA1814  Corethrogyne filaginifolia Frank W. Peirson 1924-8-29 Orange 2 miles from Balboa on toad inland along creek Comment
  UCR100456  Coronopus didymus B. G. Pitzer 1996-4-30 2767 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  RSA731928  Cotula australis Fred M. Roberts, Sandra Leatherman 2007-11-27 6682 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. ca. 0.3 km S Fairmont Blvd. 118 Comment
  SD94964  Cotula australis J. Harry Lehr 1976-2-14 910 Orange Santa Anna Street north of State College Blvd., Anaheim. Comment
  UC1292312  Cotula australis C. L. Hitchcock and C. V. Muhlick 1964-3-17 23067 Orange 8 mi e Yorba Linda; Santa Ana Canyon Comment
  CAS-BOT-BC287226  Cotula australis Ira L. Wiggins 1966-2-18 20451 Orange Orange grove on W side of State College Blvd, opposite Electra Way, Fullerton Comment
  UC1719522  Cotula coronopifolia D. Atwood 1993-3-29 17728 Orange Huntington Beach along Beach Blvd ca 1/2 miles N of the beach. Comment
Read comments
Jul 14 2012
  UCR96897  Cotula coronopifolia Scott D. White 1993-4-28 1287 Orange Pacific slope, Tustin Marine Corps Air Station, NW of Peters Canyon Channel, between Moffett Dr. & Warner Comment
  CAS-BOT-BC77622  Cotyledon Carl B. Wolf 1936-7-8 8099 Orange Coast Highway, western end of Newport Bay 9 Comment
Read comments
Dec 20 2019
  CAS-BOT-BC77623  Cotyledon Le Roy Abrams 1917-6-23 6555 Orange Balboa Comment
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Dec 20 2019
  RSA773507  Crassula connata Fred M. Roberts 1999-5-14 5227 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Canyon, 0.7 km NW Bolero Spring and 2.6 km SW Silverado School 490 Comment
  UC1543005  Crassula connata Donald G. Nelson 1935-3-23 178 Orange just s. of <Orange thorpe> Ave. E. Fullerton Comment
  UCR191443  Crassula connata A. C. Sanders, Fred M. Roberts 2008-4-8 34725 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, head of Hicks Canyon, S of Santiago Reservoir 351 Comment
  RSA0135553  Crassula connata var. connata David E. Bramlet 2003-3-14 3345 Orange Coastal Plains & Basins; South Coastal Plain region: Newport Beach. 30.5m west of Avocado & 183m W of McArthur Blvd & 190m N of the Newport Beach Library. 49 Comment
  RSA643445  Cressa truxillensis R. D. Goeden, D. W. Ricker 1965-7-7 s.n. Orange Tustin township, near Peters Canyon Channel, E of Santa Ana Marine Corps Air Station. 61 Comment
  IRVC22971  Cressa truxillensis Karlin G. Marsh 1986-8-26 Orange Flood Control Channel F-10 east of Redhill Ave.; dry banks of flood control channel. Tustin Comment
  IRVC21733  Croton californicus Fred M. Roberts, G. A. Marsh 1984-10-16 1421 Orange east bluff, Newport Back Bay, 3.6km W UCI campus center; 0.1km S Camp Survey Mark, Newport Beach 15 Comment
  UCD141988  Croton californicus G. L. Webster 1966-12-11 7480 Orange Dana Point. Comment
  UCR220965  Croton californicus Dick Newell, Don Millar 2010-4-27 027 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Limestone Ridge Rd. at junction of Markel Spur Rd., overlooking The Sinks 427 Comment
  RSA715703  Croton setiger Fred M. Roberts, Robert L. Allen 2005-10-15 6314 Orange entrance to Falcon Group Camp, 2.1km ESE Los Pinos Peak and 0.3km NE campground. 1008 Comment
  UCR191234  Croton setiger A. C. Sanders, Fred M. Roberts 2008-4-22 34984 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  RSA0043358  Crypsis schoenoides Fred M. Roberts, Laura Cohen 2012-10-31 7715 Orange San Joaquin HillsL Laguna Lake 1 (Upper Laguna Lake), north end. Laguna Coast Wilderness Park, ca. 5.1 km ENE Signal Hill. 113 Comment
  UCR203980  Cryptantha intermedia Fred M. Roberts 2008-3-12 6716 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
  SD87710  Cryptantha intermedia var. johnstonii F. W. Peirson 1924-5-31 Orange 5 miles south of Laguna Comment
  RSA542660  Cryptantha microstachys Fred M. Roberts 1988-4-10 3907 Orange Lomas De Santiago: Loma Ridge, 1.0 kilometer N Bolero Lookout. 415 Comment
  RSA732085  Cryptantha microstachys A. C. Sanders, Fred M. Roberts 2008-3-25 34530 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR47757  Cryptantha microstachys F. R. Fosberg 1930-6-15 S- 02937 Orange Santa Ana Mtns, Santiago Canyon, near Modjeska's home. Comment
  UCSB52878  Cryptantha microstachys Roberts, Fred; Marsh, G. 1983-3-30 Orange UC Irvine Ecological Preserve, 0.6 km. SW UCI campus center 43 Comment
  IRVC15122  Cryptantha muricata var. muricata A. S. Boughey 1968-4-23 204 Orange Black Star Canyon, .5mi below Hidden Ranch; area burned this winter. Santa Ana Mountains Comment
  CDA42236  Cucurbita digitata Bellue - Paddock Oct 1944 Orange Near Ry. [Railway?] 0 Comment
  JEPS42641  Cucurbita foetidissima L. M. Booth 1933-10-18 Orange Newport Comment
  RSA756062  Cucurbita pepo A. C. Sanders, Fred M. Roberts 2008-9-18 36087 Orange Lomas de Santiago, Santiago Creek Canyon c. 0.5-0.8 miles above the highway bridge 300 Comment
  MACF020320  Cupressus Richard J. Ramirez 1974-11-3 D 3 Orange Collected about 8 mi. inland on Saddleback Canyon Rd., from Tucker Wildlife Sanctuary. Comment
  RSA7201  Cupressus forbesii B. D. Stark 1933-3-17 4532 -C Orange Claymine Canyon, Santa Ana Mts. 609 Comment
  RSA7203  Cupressus forbesii B. D. Stark 1933-1 4532 Orange Claymine Canyon, Santa Ana Mts. 609 Comment
  NY16670  Cupressus guadalupensis var. forbesii C. B. Wolf 1935-1-2 6279 Orange This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY16675  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
  RSA5932  Cuscuta californica C. B. Wolf 1932-7-2 3820 Orange Carbon Canyon, 1/8 mile below La Vida Springs 213 Comment
  UCR16113  Cuscuta californica Dave Cerf 1971-4-17 s.n. Orange Orange Park Acres, 0.25 mi. north of Twin Lakes 396 Comment
  RSA542644  Cuscuta californica Fred M. Roberts, Kathy Keane 1988-5-25 3980 Orange Rancho Mission Veijo: Lower Canada Chiquita, 2.5 kilometers SSE Medium Rancho Survey Marker. 85 Comment
  UCR170447  Cuscuta ceanothi Jeffrey Ross, R. Zaka, P. Ross 1998-5-2 34 Orange Irvine, San Joaquin Wildlife Reserve, San Diego Creek; highly disturbed wash, sandy with high seasonal variation in water level, c. 5 mi from Pacific Ocean 6 Comment
  UCSB59703  Cuscuta salina Tilforth, C. 1975-9-3 Orange Northeast shoreline of Upper Bay, Newport Beach, Orange County Comment
  UCR194551  Cuscuta subinclusa A. C. Sanders, Fred M. Roberts, Amber O'Neal 2008-5-9 35320 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, along fire line/bulldozer cut, c. 1.5 mi. east of Walnut Cyn Reservoir 346 Comment
  UCD54451  Cuscuta subinclusa R. Keith Glenn 1973-8-27 s.n. Orange 1 mile north of Barranca Rd. off Sand Canyon Rd. Comment
  CDA23574  Cynodon dactylon L. D. Lyons, Mark A. Elvin 2006-9-23 422 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
  POM202596  Cynodon dactylon L. M. Booth 1932-5-25 1115 Orange Balboa Island [Newport Bay]. Comment
  RSA0089222  Cynodon dactylon Fred M. Roberts 2014-4-21 7864 Orange South Coast: San Joaquin Hills: Upper Laguna Lake 1 (upper Laguna Lake), north basin. 113 Comment
  RSA696696  Cynodon dactylon Keith E. Hoffmaster 1926-12-18 s.n. Orange Santa Ana, San Juan Capistrano, San Onofre, other places Comment
  RSA6041  Cyperus eragrostis Carl B. Wolf 1932-6-13 3721 Orange Fullerton, Rose Drive 53 Comment
  RSA800024  Cyperus eragrostis Justin M. Wood 2011-6-28 4306 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. Just W of parking area. 25 Comment
  UC729936  Cyperus eragrostis Carl B. Wolf 1932-6-13 3721 Orange Malvern & Nicholas Aves. Fullerton 53 Comment
  UCSB48015  Cyperus eragrostis Roberts, Fred 1980-6-30 Orange Irvine: near east end of Veeh Reservoir; at corner of Ridgeroute and Peralta Rd. 92 Comment
  POM1353  Cyperus erythrorhizos D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon. Comment
  CAS-BOT-BC114322  Cyperus esculentus John Thomas Howell 1927-7-18 2794 Orange Santa Ana River bottom, Santa Ana Canyon. 152 Comment
  UCR194990  Cyperus involucratus A. C. Sanders, Fred M. Roberts 2008-8-7 35999 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 Comment
  RSA153444  Cyperus laevigatus F. R. Fosberg 1931-6-19 746 Orange Carbon Canyon, Puente Hills. Comment
  SD28115  Cyperus laevigatus Carl B. Wolf 1932-7-2 3814 Orange Carbon Canyon ; 0.125 mile below La Vida Springs; edge of small watercourse. 213 Comment
  UC472149  Cyperus laevigatus J. Ewan 1931-10-3 Orange below La Vida Soda Spring (Carbon Canyon); Carbon Canyon Comment
  UC729960  Cyperus laevigatus Carl B. Wolf 1932-7-2 3814 Orange 1/8 mi. below La Vida Springs (Carbon Canyon); Carbon Canyon 213 Comment
  RSA794756  Cyperus odoratus Justin M. Wood 2010-9-29 2748 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
  UCR166792  Cyperus odoratus R. E. Riefner Jr. 2005-7-9 05- 551 Orange South Coast, city of Huntington Beach, Huntington Central Park, Goldenwest Street near Slater Avenue 1.5 Comment
  SD234213  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). 10 Comment
  UCD169090  Cyrtomium falcatum R. E. Reifner Jr. 2011-7-1 11- 83 Orange City of Newport Beach, beach area west of the end of Cameo Shores Road; south ca. 1 mi from Poppy Avenue. 1 Comment
  UCR246478  Cyrtomium falcatum R. E. Riefner Jr. 2011-7-7 11- 87 Orange city of Dana Point, south of Mussel Cove, north of Salt Creek Beach Park 9 Comment
  CAS-BOT-BC190451  Dactylis glomerata Carl B. Wolf 1932-6-13 3715 Orange Fullerton, Rose Drive. 53 Comment
  RSA603365  Datisca glomerata Scott D. White, B. Leatherman 1997-6-12 5341 Orange East of San Juan Capistrano: San Juan Creek between Highway 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi E of I-15 / Hwy 74 junction. 46 Comment
  RSA542375  Datura stramonium Fred M. Roberts Jr., Gordon Marsh 1987-8-31 3600 Orange Santa Ana River: adjacent to Santa Ana, 0.5 km NE 17th St. bridge. 27 Comment
  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
  RSA0048655  Daucus pusillus Keith E. Hoffmaster 1934-4-22 189 Orange Santa Ana Mts. [Orange or Riverside County] Comment
  RSA761936  Daucus pusillus Robt. Allen 2005-4-30 12497 Orange Caspers Wilderness Park, East Ridge Trail. 175 Comment
  CAS-BOT-BC299329  Deinandra fasciculata Agnes M. Bowman 1899-6-1 s.n. Orange Orange Comment
  CAS-BOT-BC299333  Deinandra fasciculata John Thomas Howell 1931-6-1 6625 Orange San Clemente Comment
  CHSC26109  Deinandra fasciculata Roger Shelby 1970-8-22 Orange Ca. 4 mi. N. of Huntington Beach, 1 1/2 mi. So. of Warner Ave. off Pacific Coast Hwy. in Bolsa Bay area. 0 Comment
  IRVC29253  Deinandra fasciculata Kay Stockwell 1999-7-13 s.n. Orange Cannon Road (extension of Imperial Hwy) at Goldenrod St. Peralta Hills 152 Comment
  RSA749349  Deinandra fasciculata Fred M. Roberts 2008-4-22 6922 Orange Lomas de Santiago: Loma Ridge, Lower Hicks Cyn.,along Haul Rd. near asphalt plant, 2.2 km ENE Rattlesnake Reservoir dam and 2.2 km WNW Bee Peak, Irvine Ranch Conservancy. 188 Comment
  SFV3981  Deinandra paniculata A. M. Johnson 1932-4-23 4006 Orange Dry hills north of Orange. Comment
  RSA769340  Delphinium cardinale E. W. Lathrop 1974-6-27 7406 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 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
  CAS-BOT-BC121417  Delphinium parryi subsp. parryi P. C. Everett 1935-5-19 6871 Orange Santa Ana Mtns., Baker Canyon, West Ladd truck trail 304 Comment
  CAS-BOT-BC121420  Delphinium parryi subsp. parryi P. C. Everett 1935-5-19 6871 Orange Santa Ana Mtns., Baker Canyon, West Ladd truck trail 304 Comment
  CAS-BOT-BC121546  Delphinium patens subsp. hepaticoideum Philip Alexander Munz; Robert Daniel Harwood 1920-4-24 3749 Orange Santa Ana Mtns, Sierra Canyon 365 Comment
  RSA723969  Deschampsia danthonioides R. E. Riefner 1998-5-15 98 -328 Orange San Clemente State Beach, mima mound field in SW corner of park. 27 Comment
  UCR261716  Descurainia pinnata Dick Newell, Judy Booth, Don Millar 2015-2-18 389 Orange South Coast, Newport Beach, New Delhi Channel near end of University Drive 4 Comment
  RSA588707  Dicentra chrysantha Fred M. Roberts, Carol A. Roberts 1990-5-23 4643 Orange West Fork, Upper Long Canyon, near Main Divide Truck Trail, 4.5km SE Los Pinos Peak. 756 Comment
  RSA734281  Dichelostemma capitatum A. C. Sanders, Linda Farley, Fred M. Roberts, D. Bramlet 2008-4-1 34644 Orange Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 250 Comment
  RSA0127418  Dichelostemma capitatum subsp. capitatum Fred M. Roberts 2016-3-17 8013 Orange San Joaquin Hills: City of Irvine, Ridge between Coyote Canyon and Bommer Canyon along Turtle Ridge Trail, 0.6 km NNE Signal Peak and 1.1 km SW Cattle Camp. 314 Comment
  RSA737543  Dichelostemma capitatum subsp. capitatum Fred M. Roberts 2008-3-12 6718 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA588704  Dichelostemma capitatum subsp. capitatum Fred M. Roberts, Carol A. Roberts 1990-5-23 4647 Orange Santa Ana Mtns: West Fork, Upper Long Canyon, near Main Divide Truck Trail, 4.5 km SE Los Pinos Peak. 756 Comment
  RSA702763  Dichondra occidentalis Scott D. White, Michael Honer 2004-5-17 10389 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
  RSA184114  Dichondra repens I. L. Wiggins 1965-7-11 20362 Orange Vacant lot between State College Blvd. and Troy High School campus, Fullerton. Comment
  RSA562808  Digitalis purpurea Steve D. Boyd, Tim S. Ross 1992-5-20 7480 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
  RSA683844  Digitaria sanguinalis Scott D. White, Matt Carlton 2003-11-20 9872 Orange Santa Ana Mountain foothills; San Juan Creek in San Juan Capistrano; (San Juan Capistrano). 37 Comment
  RSA734607  Digitaria sanguinalis Keith E. Hoffmaster 1933-10-8 280 Orange Santa Ana Comment
  UCSB52889  Digitaria sanguinalis Roberts, Fred 1984-10-18 Orange San Juan Cyn, Santa Ana Mtns; 2.6 km ENE of San Juan Guard Stn, 4.0 km WNW Sitton Peak 345 Comment
  RSA708441  Diospyros lycioides subsp. lycioides Mark Elvin 2004-5-2 3418 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7 km (air) NNW of UC Irvine Campus center. 3 Comment
  CAS-BOT-BC152060  Diplacus longiflorus H. E. McMinn 1949-7-9 5598 Orange Ca. 2 miles east of San Juan Capistrano, San Juan Pass, Highway 74 Comment
  SD72857  Diplacus longiflorus F. R. Fosberg 1931-6-19 S 5128 Orange Carbon Canyon, Puente Hills, canyon wall Comment
  SBBG103894  Diplacus puniceus B. Pitzer, S. Hemstreet 1992-5-27 1965 Orange USFS Rd 3S04 to Blue Jay Group Cmpgrd, off St Hwy 74, ca. 2 air mi W of El Cariso Cmpgrd 762 Comment
  CAS-BOT-BC43551  Diplotaxis muralis Peter H. Raven 1962-3-27 16992 Orange Site of Rancho Santa Ana, near Anaheim. 182 Comment
  RSA605374  Diplotaxis muralis A. C. Sanders 1990-10-6 10186 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Hwy 1 1 Comment
  SD98836  Diplotaxis muralis Darley F. Howe 1977-5-23 Orange Anaheim; corner of Empire and Broadway. Comment
  CDA3682  Diplotaxis muralis Johnson, Margaret Bellue Oct 1944 Orange Southern Pacific junction between Anaheim & Orange. 0 Comment
  CAS-BOT-BC43559  Diplotaxis tenuifolia L. R. Abrams 1917-7-5 6601 Orange Tustin. Comment
  UC856048  Diplotaxis tenuifolia I. M. Johnston 1918-5-4 1927 Orange Santa Ana Comment
  CDA3678  Diplotaxis tenuifolia Margaret Bellue, Tubbs, Johnson Oct 1944 Orange Bataxia Street Crossing, Santa Fe. 0 Comment
  POM123  Diplotaxis tenuifolia I. M. Johnston 1918-5-4 1927 Orange Santa Ana, at roadside. Comment
  UCR240095  Distichlis littoralis Dick Newell, Judy Booth, Don Millar 2012-11-28 311 Orange South Coast, Newport Beach, Back Bay, 0.8 mi. due south of University Drive, off Brown Trail 1 Comment
  RSA708818  Distichlis spicata Fred M. Roberts, Robert L. Allen, Chris Barnhill 2004-8-21 6113 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
  RSA699298  Dodecatheon clevelandii Jeanne Paxton 1934-2-25 s.n. Orange Sugar Loaf Canyon, Arch Beach Comment
  UCSB52469  Draba cuneifolia Roberts, Fred; Marsh, K. 1983-2-25 Orange Laguna Beach, Goff Ridge, southern Temple Hill, 0.9 km NNE Goff Island 180 Comment
  IRVC122  Dryopteris arguta A. S. Boughey 121 Orange [San Juan Canyon], Ortega Hwy, 1mi E San Juan Guard Sta. Santa Ana Mountains Comment
  IRVC22665  Dryopteris arguta Fred M. Roberts 1985-5-9 1726 Orange Santa Ana Mountains: Upper McVicker Canyon, 1.8km NE Los Pinos Peak. Peninsular Ranges 1113 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
  IRVC25312  Dryopteris arguta Fred M. Roberts 1987-3-27 3278 Orange Canada de Los Alisos; Canada Rd., 4.5km NNE El Toro Fire Station. Southern Coastal 226 Comment
  IRVC26522  Dudleya anthonyi Mark A. Elvin 2004-5-22 3451 Orange UCI Arboretum Southern Coastal 15 Comment
  LA204783  Dudleya blochmaniae subsp. blochmaniae None; 1951-4-26 sn Orange Salt Creek Beach, Laguna Comment
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Nov 15 2013
  RSA678502  Dudleya blochmaniae subsp. blochmaniae Fred M. Roberts, Robt Allen, Carol A. Roberts 2003-5-11 5863 Orange Dana Point Headlands: hilltop, 0.6km SSW Richard Henry Dana School south of Pacific Coast Highway and north of Scenic Drive. 73 Comment
  SBBG94387  Dudleya blochmaniae subsp. blochmaniae R. Moran 1950-4-24 3388 Orange San Clemente Comment
  SD45413  Dudleya blochmaniae subsp. blochmaniae Reid Moran 1950-4-24 3388 Orange San Clemente, atop sea bluffs. Comment
  UCR159829  Dudleya cymosa Valerie Soza, LeRoy Gross 1999-6-7 473 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 Comment
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Jun 15 2013
  UC2059987  Dudleya cymosa subsp. ovatifolia K. Nakai 1979-10-30 542 Orange Santa Ana Mountains, Santiago Canyon. End of Modleska Road. Comment
  RSA0063395  Dudleya edulis Fred M. Roberts, David Bramlet 2003-6-6 5909 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, west slopes of Cristianitos Canyon, 0.86 km SSW Gato Gate and 0.39 km W of Cristianitos Road. 149 Comment
  UC933206  Dudleya edulis Reid Moran 1949-7-2 3287 A Orange Aliso Canyon Laguna Beach Comment
  UC933265  Dudleya edulis Reid Moran 1949-5-28 3258 Orange Aliso Canyon Laguna Beach Comment
  RSA0002519  Dudleya edulis Reid V. Moran 1948-6-23 3097 Orange North-facing cliff near mouth of Aliso Canyn, south of Laguna Beach 8 Comment
  CAS-BOT-BC411404  Dudleya lanceolata John Thomas Howell 1927-7-3 2637 Orange Claymine Canyon, Santa Ana Mts. 304 Comment
  RSA5350  Dudleya lanceolata B. D. Stark 1932-12-9 1674 Orange Dana Point Comment
  RSA598971  Dudleya lanceolata Scott D. White 1997-3-28 4842 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  RSA743454  Dudleya lanceolata Fred M. Roberts 2008-7-10 7074 Orange Dana Point: Dana Point Headlands, CNLM Preserve, along north slopes above Dana Strand Beach, 0.8km WNW Marine Institute, Dana Point Harbor. 45 Comment
  UCR193586  Dudleya lanceolata A. C. Sanders, T. B. Salvato 2008-5-13 35385 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
  UCR240090  Dudleya lanceolata Dick Newell, Don Millar 2012-5-22 254 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Hangmans Tree Rd. at Santiago Creek 350 Comment
  UCSB42175  Dudleya lanceolata Roos, John 1965-6-16 Orange Dana Point Comment
  CAS-BOT-BC411407  Dudleya lanceolata K. Nakai 1979-5-12 507 Orange Treasure Cove, Newport Bluffs 10 Comment
  UC420678  Dudleya lanceolata A. R. Davis Orange mtns above Claremont Comment
  RSA397815  Dudleya multicaulis Thekla Mohr 1920-06 s.n. Orange Hills near Laguna Comment
  UC338337  Dudleya multicaulis unknown Orange Newport Bay Comment
  UC536908  Dudleya multicaulis Lawrence M. Booth 1932-5-18 1054 Orange Newport Bay Comment
  UC971741  Dudleya multicaulis L. M. Booth 1932-5-18 1054 Orange Newport Bay Comment
  UCD101935  Dudleya multicaulis Miss Thekla Mahr 1920-6-1 s.n. Orange near Laguna. Comment
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Jun 13 2012
  RSA757121  Dudleya pulverulenta A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37192 Orange Lomas de Santiago, lower Hangmans Tree Canyon. 379 Comment
  RSA757122  Dudleya pulverulenta A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-10-21 37192 Orange Lomas de Santiago, lower Hangmans Tree Canyon. 379 Comment
  UCR222628  Dudleya pulverulenta T. B. Salvato 2010-10-27 5103 Orange South Coast, Dana Point Headlands, Harbor Point Park, south of Scenic Dr. and Cove Rd., beyond the end of Green Lantern St., overlooking Dana Point Harbor 70 Comment
  CAS-BOT-BC109742  Dudleya stolonifera R. V. Moran 1949-7-2 3287 Orange Near mouth of Aliso Canyon, south of Laguna Beach. Comment
  SD45416  Dudleya stolonifera Reid Moran 1950-5-24 3411 Orange Laguna Canyon, north-facing cliff at about 800 feet, 1.5 miles above canyon mouth and 1.7 miles below Toro Road junction. Comment
  CAS-BOT-BC109768  Dudleya viscida J. C. Nevin 1885-1-1 4 Orange San ? Hot Springs. (The locality for this plant is probably Hot Springs, San Juan Capistrano and in Orange county.) Comment
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Jan 4 2018
  SFV10403  Dudleya viscida M. L. Vincent 1963-7-8 435 Orange Roadside, 5 miles east of San Juan Capistrano on Highway 74. Comment
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Jan 6 2018
  UCSB48031  Dudleya viscida Roberts, Fred 1980-7-7 Orange Santa Ana Mtns.; San Juan Canyon, Hwy. 74, 2.3 km. ENE San Juan Guard Station; 0.4 km. W of Bench Mark 1100 315 Comment
  CAS-BOT-BC197030  Echinochloa colona Ira L. Wiggins 1965-10-24 20295 Orange On S side of Yorba Linda Blvd. 1/4 mi. E of State College Blvd., Fullerton Comment
  CAS-BOT-BC197173  Echinochloa crus-galli Ira L. Wiggins 1965-9-26 20262 Orange To south across street from Letters and Science building, California State College at Fullerton Comment
  UC537284  Echinochloa crus-galli Lawrence M. Booth 1932-7-18 1263 Orange Newport Bay Costa Mesa; , Costa Mesa Comment
  UCD60823  Echinochloa crus-galli Beecher Crampton 1965-10-27 7584 Orange 2 miles E of Irvine, UC South Coast Field Station. Comment
  UCR2340  Echinochloa crus-galli F. M. Reed 1920-8-27 4498 Orange Coastal Plain, roadside north of Orange 61 Comment
  UCSB47944  Echinochloa crus-galli Roberts, D. 1980-5-4 Orange Camino Capistrano Rd below bridge (Crown Valley Pkwy) 30 Comment
  RSA184075  Echinochloa crus-galli I. L. Wiggins 1965-10-5 20325 Orange [Near Fullerton.], [33 deg 52'02N, 117 deg 52'30W Comment
  RSA234531  Echinochloa crus-galli James Henrickson 1970-7-25 5088 Orange 3.5 miles NW of Huntington Beach growing along graded inner slope of East Garden Grove-Wintersburg Flood Control Channel near Bolsa Chica Salt Marsh. 1 Comment
  UC1202111  Echinocystis macrocarpa R. W. 1933-4-1 Orange Near Capistrano Comment
  UC814517  Echinodorus berteroi I. M. Johnston 1918-9-3 2151 Orange Laguna Canyon San Joaquin Hills, Laguna Canyon 106 Comment
  UCR19807  Echinodorus berteroi F. M. Reed 1924-8-15 4963 Orange South Coast, Laguna Lake Beds, Laguna Canyon Comment
  RSA151075  Eclipta prostrata Peter H. Raven 1961-10-15 16859 Orange Dyke along road to Yorba Linda just north of US Hwy 91 114 Comment
  RSA715696  Eclipta prostrata Fred M. Roberts, Chris M. Barnhill 2005-9-27 6276 Orange San Juan Capistrano: San Juan Creek wash, east of La Novia Road bridge, 1.4km E Mission San Juan Capistrano, 27 Comment
  UCSB47620  Ehrendorferia chrysantha Roberts, Fred 1980-5-3 Orange Santa Ana Mtns., San Juan Canyon, Rte. 74, 0.2km S Lower San Juan Picnic Ground 393 Comment
  SEINET10753656  Ehrharta calycina Scott D. White, M. Honer 2003-6-12 White 9542 Orange Southwestern Santa Ana Mts Foothills: Rancho Mission Viejo. Upper end of Trampas Canyon. (San Clemente.) 152 Comment
  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
  UC552355  Elatine brachysperma H. H. Tracy 1935-4-10 Orange n Cotsa Mesa Comment
  RSA592059  Elatine brachysperma R. E. Riefner 1994-4-15 94 -320 Orange Dana Hills NW of Cooks Reservoir. Comment
  UCR193790  Eleocharis A. C. Sanders, Fred M. Roberts 2008-7-3 35701 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
  CAS-BOT-BC113331  Eleocharis montevidensis John Thomas Howell 1927-7-6 2660 Orange Wet soil of Santa Ana River bottom, Santa Ana Canyon. 152 Comment
  CAS-BOT-BC168149  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 ca. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  POM202156  Eleocharis palustris L. M. Booth 1932-5-15 1202 Orange Costa Mesa. Comment
  RSA723324  Eleusine coracana subsp. africana R. E. Riefner 2006-11-15 6 -677 Orange City of Irvine, Shady Canyon Rd. at Quail Hill. 35 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
  RSA746529  Eleusine coracana subsp. africana R. E. Riefner Jr. 2008-12-23 8 -382 Orange City of Lake Forest, along Alton Pkwy, at Barranca Rd. 80 Comment
  RSA725461  Eleusine indica Fred M. Roberts 2007-8-6 6556 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
  POM202592  Elymus X gouldii L. M. Booth 1932-5-24 1090 Orange Newport Lagoon. Comment
  UCR207543  Elymus condensatus O. F. Clarke, Roger E. Reinke 2004-11-14 s.n. Orange South Coast, Newport Back Bay 3 Comment
  UCR228755  Elymus condensatus Dick Newell, Don Millar 2011-5-24 162 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Hicks Haul Road 286 Comment
  UCR177693  Elymus glaucus Fred M. Roberts 2003-5-1 5687 Orange Coastal Plains & Basins; South Coastal Plain region, Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.56 km SSW Gato Gate and 0.21 km west of Cristianitos Rd. 96 Comment
  CLARK-A1528-4606  Elymus glaucus subsp. glaucus John C. Roos 1937-5-10 2336 Orange San Juan Capistrano Comment
  CDA22471  Emex spinosa Ball 1933-4-21 Orange Lemon Grove. 0 Comment
  VVC254  Emmenanthe penduliflora P. J. MacKay 1990-5-25 s.n. Orange Peninsular Range, Hwy 74 near San Juan Hot Springs 198 Comment
  RSA407878  Encelia actoni B. Busenberg, Walter Wisura 1987-7-23 4171 Orange Newport Bay at jct of Back Bay Drive and San Joaquin Hills Road Comment
  CAS-BOT-BC131227  Encelia californica H. F. Copeland 1938-6-28 s.n. Orange Hills back of Laguna Beach Comment
  OBI63088  Encelia californica R. K. Brummitt 1998-5-23 19990 Orange Newport Beach, by marina; 10 Comment
  POM122763  Encelia californica Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA221019  Encelia californica E. W. Lathrop 1966-3-23 6082 Orange Skyline Drive between Tin Mine Canyon and Black Star Canyon, 6 miles W of Corona, Santa Ana Mts. 427 Comment
  UCR140798  Encelia californica Robin G. Marushia 2004-5-4 014 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
  UCR267184  Encelia californica Fred M. Roberts 2010-3-12 7177 Orange Southeast Coast, DANA POINT HEADLANDS: Harbor Point Park, South of Green Lantern and west of Dana Point Harbor, c. 150 meters SE Interpretive Center 50 Comment
  UCSB12532  Encelia californica Whittington, M. 1962-4-20 Orange South side Newport Back Bay about 0.5 miles south of the salt works, Newport Comment
  SEINET11859823  Encelia californica J. F. Bright, Wyman, C. 1933-3-5 8012 Orange in Santa Ana foothills Comment
  UC1118064  Encelia californica H. E. Norton 1931-3-1 53 Orange Corona #1 Corona Quadrangle Comment
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Apr 24 2014
  IRVC8766  Epilobium canum subsp. canum Charles W. Sexton 1965-2-12 s.n. Orange Newport Beach. Southern Coastal Comment
  UCR240070  Epilobium ciliatum Dick Newell, Judy Booth 2012-9-26 290 Orange South Coast, Newport Beach, Back Bay Drive at the Salt Dike 3 Comment
  UCSB48194  Epilobium ciliatum Roberts, Fred 1981-6-26 Orange Santa Ana Mountains, East fork Viejo Cyn., 0.6 km N Calif. Rte. 74; 2.7km E San Juan Guard Station 326 Comment
  RSA495  Epilobium ciliatum subsp. ciliatum J. T. Howell 1927-10-29 776 Orange Bryant Ranch near Long Beach. 15 Comment
  RSA731933  Epilobium ciliatum subsp. watsonii Fred M. Roberts, Sandy Leatherman 2007-11-27 6677 Orange Yorba Linda: drainage channel on east side of Amberdale Dr. ca. 0.3 km S Fairmont Blvd. 118 Comment
  RSA666097  Epilobium pygmaeum Fred M. Roberts, Michelle Lee 2001-6-4 5481 Orange Rancho Mission Viejo: Chiquita Ridge, 0.2km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. 218 Comment
  IRVC28640  Epipactis gigantea Mark A. Elvin, A. C. Sanders 2005-9-2 4495 Orange Mouth of Lion Cyn, just up stream from Lower San Juan Campground. Santa Ana Mtns 457 Comment
  POM210924A  Epipactis gigantea L. M. Booth 1932-6-4 1150 Orange Newport Lagoon. Comment
  UC1543035  Equisetum laevigatum Donald G. Nelson 1935-4-6 263 Orange e San Juan Capistrano (canyon 200-300 ft below main Hwy., ca. 4 mi from Summit); San Juan Canyon 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
  RSA699858  Equisetum laevigatum Dorothy Parsons 1932-4-5 s.n. Orange Santa Ana River Bank Comment
  POM17838  Equisetum telmateia var. braunii Philip A. Munz 1923-9-7 7731 Orange Holy Jim Canyon, Santa Ana Mountains 609 Comment
  SEINET1908663  Eragrostis A. C. Sanders, Fred M. Roberts 2008-1 36091 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lomas de Santiago, Santiago Creek Canyon c. 0.5-0.8 miles above the highway bridge. 1000 Comment
  RSA430  Eremocarpus setiger J. T. Howell 1927-9-24 742 Orange Santa Ana Botany Garden 152 Comment
  IRVC1298  Eremocarpus setigerus J. Cameron 1964-3-8 Orange San Clemente Comment
  SEINET7909394  Eriastrum eremicum G. A. Wojciechowski 1967-1 Orange San Juan Capistrano 610 Comment
  SD28142  Ericameria pachylepis Carl B. Wolf 1931-10-30 2943 Orange Rancho Santa Ana. 206 Comment
  RSA699268  Ericameria palmeri J. Vlahos 1933-10-5 s.n. Orange French Hill. 5 mi. east of airport. Comment
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Jan 29 2015
  RSA712944  Ericameria parishii var. parishii Fred M. Roberts, Robert L. Allen 2005-10-15 6309 Orange Upper Long Canyon along Main Divide Road, 2.4km E Los Pinos Peak and 1.0km NE Falcon Group Camp. 1020 Comment
  CAS-BOT-BC293092  Ericameria pinifolia John Thomas Howell 1927-10-22 3158 Orange On n. side of Santa Ana Canon [Canyon] 213 Comment
  CHSC30406  Erigeron bonariensis T. B. Devine 1980-4-4 652 Orange Huntington Beach, beside Edinger Ave. ca 1.5 mi. W. of jct. with Bolsa Chica Rd. Roadside between Edinger Ave. and drainage canal just So. of Naval Weapons Station. Comment
  SD248335  Erigeron karvinskianus R. E. Riefner Jr. 2013-1-16 13 15 Orange City of Newport Beach, vicinity of Poppy Ave. and Ocean Blvd., coastal bluff at Little Corona Beach. 7 Comment
  CAS-BOT-BC189070  Eriodictyon crassifolium H. M. Hall 1913-5-28 9402 Orange Santiago Canon [Canyon] Comment
  RSA734652  Eriodictyon crassifolium var. crassifolium A. C. Sanders, Fred M. Roberts, Amber O Neal, D. E. Bramlet 2008-5-9 35298 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, along old dirt road c. 1.25 mi. ESE of Walnut Cyn Reservoir. 340 Comment
  UCR45132  Eriogonum elongatum B. G. Pitzer, L. F. LaPre 1986-10-20 s.n. Orange Santa Ana Mtns, Summit of Hicks Canyon on a private road (continuation of Jeffrey Road), c. 2.4 mi. above the gun club 274 Comment
  CAS-BOT-BC253221  Eriogonum fasciculatum var. fasciculatum H. F. Copeland 1938-6-28 s.n. Orange Laguna Beach Comment
  RSA0126615  Eriogonum fasciculatum var. fasciculatum Fred M. Roberts 2012-4-27 7498 Orange San Joaquin Hills: Buck Gully, W of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km W Signal Peak. 179 Comment
  SEINET253237  Eriogonum fasciculatum var. fasciculatum Lawrence M. Booth 1932-7-27 1326 Orange Corona del Mar, Newport Beach, Ocean Bluff. Comment
  UC536920  Eriogonum fasciculatum var. fasciculatum Lawrence M. Booth 1932-5-18 1057 Orange Newport Bay Comment
  UCSB48025  Eriogonum fasciculatum var. foliolosum Roberts, Fred 1980-7-7 Orange Santa Ana Mtns; San Juan Canyon, Calif. Rte. 74, 2.2km ENE San Juan Guard Station; 0.6km W BM 1100 305 Comment
  POM201803  Eriogonum gracile var. gracile L. M. Booth 1932-7-29 1331 Orange Newport Lagoon Comment
  RSA716664  Eriogonum parvifolium Fred M. Roberts 2004-7-10 6073 Orange Laguna Beach: Crescent Bay, at base of Twin Points. 3 Comment
  SD133035  Eriogonum parvifolium Andy C. Sander 1990-10-6 10179 Orange newport Bay, Westcliff Park area on the SW end of the bay, ca. 1 km in land of Hwy 1. 0 Comment
  RSA0061167  Eriogonum saxatile Robt. Allen 2007-8-11 s.n. Orange Santa Ana Mountains region: Modjeska Peak, west-facing slope within 2 meters of the access road up Modjeska Peak from Main Divide Road. Approximately midway between the peak's south-facing slope and the sharp bend in the extreme N end of the road. 1643 Comment
  RSA6141  Eriogonum thurberi E. R. Johnson 1933-6-22 4999 Orange Santa Ana River bottom. Rancho Santa Ana south of the Walnut Grove. 122 Comment
  RSA783663  Eriogonum virgatum J. D. Olmsted 1959-8-26 832 Orange Black Star Creek: Near Hidden Ranch along Black Star Canyon Road in Black Star Canyon in roadside cliffs. 671 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
  POM202177  Eriophyllum confertiflorum L. M. Booth 1932-5-12 1042 Orange Newport Bay. Comment
  POM357963  Eriophyllum confertiflorum M. B. Dunkle 1934-6-18 3998 Orange San Juan Canyon, Southern Coastal. 305 Comment
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Oct 3 2011
  SEINET3386759 Image available Eriophyllum confertiflorum F. M. Reed 1925-5-14 4978 Orange Aliso Canyon. 30 Comment
  IRVC15665  Eriophyllum confertiflorum var. confertiflorum A. S. Boughey, P. Pembrook 1965-6-18 1018 Orange Los Trancos Canyon at bottom, ; chaparral. San Joaquin Hills Comment
  POM4917  Eriophyllum multicaule Robinson, Crocker 1916-3-28 s.n. Orange Santa Ana Mts. Comment
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Sep 3 2011
  RSA0034727  Erodium cicutarium David Barrios 1991-5-1 6 Orange Northwest of Fairmont Ave and Quail cir., Yorba Linda. 365 Comment
  RSA743496  Erodium cicutarium Fred M. Roberts 2008-3-19 6781 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8km W Marine Institute, Dana Point Harbor. 45 Comment
  RSA658622  Erodium cicutarium L. Fountain 1966-2-18 14 Orange Near the entrance to Rancho Santa Ana, 6mi. east of Atwood. Comment
  HSC7249  Erodium moschatum C. L. Hitchcock 1966-3-15 24138 Orange 1/2 mi. E of Brea Comment
  UC1286998  Erodium moschatum C. L. Hitchcock 1966-3-15 24138 Orange 0.5 mi e Brea Comment
  UCSB48066  Erodium moschatum Fritzke, Sue; Roberts, Fred 1982-4-2 Orange LAGUNA NIGUEL: hills; 3.5km ESE Aliso Peak; 3.2km ESE Alicia Fire Station; N of Del Avion 30 Comment
  CAS-BOT-BC41524  Erysimum capitatum Helen D. Geis 1902-1-1 528 Orange Santiago Creek. Comment
  CAS-BOT-BC41525  Erysimum capitatum Helen D. Geis 1902-1-1 528 Orange Santiago Creek. Comment
  RSA696171  Erysimum capitatum Keith E. Hoffmaster 1932-4-17 s.n. Orange Santa Ana Mts. [Orange/Riverside Cos] Comment
  UCR188898  Erythrina caffra Robert DeRuff 1985-1 103 Orange Southern Coast, Newport Beach, Upper Newport Back Bay, along the path from Mariners Drive to North Star Beach 30 Comment
  RSA785386  Eschscholzia californica Keith E. Hoffmaster 1934-1 402 Orange Santa Ana Comment
  RSA722436  Eschscholzia californica Gray 1912-05 s.n. Orange El Modena. 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
  RSA66271  Eschscholzia californica var. peninsularis F. W. Peirson 1923-5-6 3506 Orange Trail to Santiago Peak, Santa Ana Ms., from Trabuco Canyon. 1067 Comment
  UC1608074  Eucalyptus amplifolia Dave Goodward 1987-4-16 5 Orange e. Tustin (1 mi. n.e. of Irvine Blvd./Myford Rd. intersection, Boy Scout Camp in Peters Canyon, Irvine Ranch, s. of tree 4 by 3 trees); Irvine Ranch, Peters Canyon, Boy Scout Camp 121 Comment
  CDA21564  Eucalyptus camaldulensis Mark A. Elvin, D. G. Kelch 2006-12-9 5316 Orange Southern Coastal; Irvine; San Diego Creek, edge of San Joaquin Marsh, beside University Drive, between Campus Drive and Highway 73. Comment
  CDA5164  Eucalyptus camaldulensis D. G. Kelch 2006-12-9 6 .555 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  UCR132571  Eucalyptus megacornuta Robert DeRuff 2001-4-16 527 Orange Southern Coast, Newport Back Bay, Shellmaker Island 1 Comment
  RSA598962  Eucrypta chrysanthemifolia Scott D. White 1997-3-28 4834 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  RSA0089536  Euphorbia D. E. Bramlet 2009-11-20 4425 Orange South Coast: San Diego Creek between Irvine and Newport Back Bay. 4 Comment
  POM9049  Euphorbia crenulata P. A. Munz 1920-4-25 3729 Orange Santa Ana Mountains, Silverado Canyon. 549 Comment
  RSA542541  Euphorbia lathyris Fred M. Roberts, William L. Smith 1988-7-30 4126 Orange San Juan Capistrano: Horno creek, Marbella country club, just east of Rancho Viejo road.. 0.8 km NE Mission San Juan Capistrano. 43 Comment
  CAS-BOT-BC202544  Euphorbia misella A. J. Perkins 1917-3-1 s.n. Orange Laguna Beach Comment
  CAS-BOT-BC539351  Euphorbia misera R. E. Riefner, Jr. 2012-12-5 12 -587 Orange City of Dana Point, Dana Point Harbor, Dana Harbor Dr near Cove Rd. 8 Comment
  UCR130485  Euphorbia misera R. E. Riefner Jr. 1999-8-21 99- 361 Orange South Coast, Laguna Beach, west of Pacific Coast Hwy., vicinity of Aliso Creek Park and south to West Drive 15 Comment
  UCR246484  Euphorbia misera R. E. Riefner Jr. 2013-1-16 13- 516 Orange South Coast, city of Newport Beach, vicinity of Poppy Ave. and Ocean Blvd., coastal bluff at Little Corona Beach 6 Comment
  UCSB52452  Euphorbia misera Roberts, Fred 1983-3-10 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
  RSA734983  Euphorbia peplus A. C. Sanders, T. B. Salvato 2008-5-13 35371 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  RSA680738  Euphorbia polycarpa Scott D. White 2003-3-21 8818 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  UCR192734  Euphorbia polycarpa A. C. Sanders, Fred M. Roberts 2008-5-6 35228 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon, just above tollway (Hwy 241) crossing on Irvine Haul Rd., near debris basin 216 Comment
  UCR52297  Euphorbia polycarpa B. G. Pitzer, D. C. Hawks 1986-12-17 0381 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, on Santiago Cyn Rd., c. 1.0 mi SW of [Irvine Lake] Santiago Reservoir 305 Comment
  RSA0104829  Euphorbia polycarpa var. polycarpa E. P. Cowper 1965-4-6 s.n. Orange Ortega Highway toward San Juan Capistrano. Comment
  UCR210359  Euphorbia serpillifolia subsp. hirtula T. B. Salvato, Billy Deane 2006-10-16 1930 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  JEPS52425  Euphorbia spathulata Alice King Apr 1908 Orange Santa Ana Mts. Comment
  RSA588849  Euphorbia tirucalli Fred M. Roberts 1989-10-4 4434 Orange South Laguna: south of, and near west end of Monterey Street, 0.6km W Aliso Peak. 33 Comment
  POM48468  Euthamia occidentalis F. W. Peirson 1924-10-19 5243 Orange Wintersberg. Comment
  UCSB47949  Festuca microstachys Roberts, D. 1980-5-3 Orange .25 km West Trabuco Peak; on Main Divide Truck Trail 1340 Comment
  CDA22544  Festuca rubra Gordon Marsh, Karlin G. Marsh 1977-5-18 Orange Laguna Niguel: One block from Pacific Coast Highway on Mariners Drive. 0 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
  CAS-BOT-BC502072  Ficus microcarpa R. E. Riefner, Jr. 2015-8-27 15 -360 Orange City of Newport Beach, Corona del Mar, long Marguerite Ave., S of Fourth Ave. 41 Comment
  RSA0088635  Ficus microcarpa R. E. Riefner Jr. 2014-6-21 14 -186 Orange City of Laguna Beach, N side of North Coast Highway near intersection with Cliff Dr. 10 Comment
  RSA0113947  Ficus microcarpa R. E. Riefner Jr. 2015-7-18 15 -198 Orange City of Costa Mesa, Anton Blvd. on ramp to 405 Freeway, ca. 0.3 mi from interesction of Bristol St at Sunflower Ave. 11 Comment
  RSA0116293  Ficus microcarpa R. E. Riefner Jr. 2008-10-22 08 -312 Orange City of Laguna Beach, vicinity of West St and Pacific Coast Hwy. 8 Comment
  UCR267276  Ficus microcarpa R. E. Riefner Jr. 2014-11-26 14- 399 Orange City of Irvine, west of Irvine Blvd. and south of Pusan Way, former MCAS El Toro facility 138 Comment
  RSA0013949  Filago arizonica Fred M. Roberts 2008-4-24 6928 Orange Lomas de Santiago: Loma Ridge, lower Hicks Cyn. 350 meters east of Haul Rd., 1.9 km E Rattlesnake Cyn. Reservoir dam and 2.1 km W Bee Peak. Irvine Ranch Conservancy. 180 Comment
  IRVC25411  Filago californica Fred M. Roberts, Wayne Ferren 1987-4-8 3360 Orange Upper Newport Back Bay, west side, North Star Beach, 0.8km N Coney Island, Newport Beach 0 Comment
  SEINET7073424  Filago californica A. G. Vestal 1963-4-24 s.n. Orange La Paz Canyon, Rancho Mission Viejo. Coordinate datum: NAD27. Comment
  RSA0104827  Filago californica J. B. Anderson 1966-4-9 526 Orange San Joaquin Hills: On road between Lindoln School-Signal Peak on near level hilltop. 182 Comment
  UCR102018  Filago gallica B. G. Pitzer 1997-3-25 3021 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  UCR237931  Foeniculum vulgare Mark A. Elvin 2003-2-2 2257 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  SD247721  Frangula californica R. F. Thorne, C. W. Tilforth, E. W. Lathrop. 1977-4-27 49673 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 456 Comment
  RSA5241  Frankenia grandifolia Carl B. Wolf 1932-9-13 4029 Orange Bryant Ranch: Triangle of waste ground S of Bryant Ave., & 1/2 mi. west of Los Alamitos Blvd. 8 Comment
  RSA697030  Frankenia grandifolia Keith E. Hoffmaster 1927-6-13 s.n. Orange Near Santa Ana. Comment
  IRVC1371  Frankenia salina Dorleene Van Gorden 1965-5-1 s.n. Orange Newport Back Bay Southern Coastal Comment
  IRVC1372  Frankenia salina Dorleene Van Gorden 1965-5-9 s.n. Orange Silverado Canyon. Peninsular Ranges, Santa Ana Mountains Comment
  IRVC21007  Frankenia salina J. B. Anderson 1966-4-12 566 Orange Newport Beach; Backbay, by mud flats above Newport Dunes State Aquatic Park, boat launch platform. Southern Coastal Comment
  JEPS30094  Frankenia salina L. M. Booth 1932-5-12 1037 Orange Newport Bay Comment
  LA103547  Frankenia salina Barry A. Prigge; 1983-12-17 5530 Orange Santa Ana Marsh and adjacent lowlands, southeasternmost part of oil field just N of Pacific Coast Highway between remnant Santa Ana River channel and dirt road 1 Comment
  RSA678748  Frankenia salina Valerie L. Soza, Kevin B. Clark, LeRoy Gross, Will Miller, Fred M. Roberts, Gary D. Wallace 2001-4-4 1104 Orange Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226). 3 Comment
  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
  UC536929  Frankenia salina Lawrence M. Booth 1037 Orange Newport Bay Comment
  HSC16189  Fraxinus dipetala S. M. Clapp 1966-4-10 33 Orange 10 mi. into Silverado Canyon 183 Comment
  RSA12722  Fraxinus dipetala Carl B. Wolf 1934-9-21 6139 Orange Silverado canyon, 1/2 mile below Silverado Motorway, W slope of Santa Ana Mts. 640 Comment
  CAS-BOT-BC422453  Fumaria officinalis Ira L. Wiggins 1965-12-5 20366 Orange 2 mi. E. of Atwood on N. side of Orangethorpe Avenue. Comment
  OBI42766  Fumaria parviflora Larry Summers 1983-4-18 s.n. Orange Tustin, Irvine Ranch, Field 120 at the intersection of Bryan and Culver. At the edge of a tomato field 46 Comment
  CHSC106536  Funastrum cynanchoides var. hartwegii Robt. Allen; Alison Linden 2007-5-17 Orange Irvine, Turtle Rock community, Chaparral Park, due N of Turtle Rock Dr, due E of Highgate terrace. UTM Zone 11S; 3722013N 0424400E. 136 Comment
  RSA553112  Funastrum cynanchoides var. hartwegii Fred M. Roberts Jr. 1989-5-9 4343 Orange Costa Mesa; Fairview Park, Just west of end of Canyon Drive, 0.1 km W Canyon School. 24 Comment
  RSA567  Funastrum cynanchoides var. hartwegii J. T. Howell 1927-6-3 19 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA609661  Galium angustifolium R. S. Woglum 1932-4-16 s.n. Orange Trabuco Canyon, Santa Ana Mountains, Cleveland National Forest Comment
  RSA702703  Galium angustifolium Scott D. White, Michael Honer 2004-5-17 10388 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
  LA208399  Galium angustifolium John Thomas Howell; 1927-6-3 2416 Orange Santa Ana Marsh and adjacent lowlands, Santa Ana Canyons Comment
  UCSB52456  Galium angustifolium Roberts, Fred 1983-3-10 Orange Dana Point Headlands; cliff above Dana Point Harbor, south of old Cove Rd; 0.8 km S Richard Henry Dana School 18 Comment
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Oct 28 2018
  UC536926  Galium angustifolium subsp. angustifolium Lawrence M. Booth 1932-7-4 1241 Orange hillside Newport Lagoon Comment
  POM186338  Galium angustifolium subsp. angustifolium Joseph A. Ewan 1932-7-29 7736 Orange Road around Newport Lagoon. Comment
  UCSB12531  Galium aparine Whittington, M. 1962-4-20 Orange South side of Back Newport Ba, about 250 yards south of saltworks, Newport Comment
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Aug 15 2016
  RSA700908  Galium siccatum Unspecified s.n. Orange Black Star Canyon Comment
  UC536927  Galium trifidum var. pacificum Lawrence M. Booth 1932-7-4 1244 Orange Newport Lagoon Comment
  RSA171101  Garrya flavescens var. pallida Robert F. Thorne 1963-7-26 32831 Orange Santa Ana Mts., Cleveland National Forest, Trabugo District. 1189 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
  POM255092  Gaura odorata E. Johnson 1940-8-15 s.n. Orange Kokke estate, I.5 miles north of Placentia. 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
  RSA610227  Gazania linearis Fred M. Roberts Jr., Tony Bonkamp 1997-3-19 4988 Orange RANCHO MISSION VIEJO: Canada Gobernadora, east slope, 2km. SSE Median Rancho Survey Mark, 1.8 km N Calif. Rte.74. 104 Comment
  RSA0035858  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-12-5 12 -588 Orange city of Dana Point, Dana Point Harbor, Dana Harbor Drive near Cove Road 9 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
  RSA3189  Gilia angelensis C. B. Wolf 1932-3-8 2674 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 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
  UCR193468  Gilia capitata A. C. Sanders, T. B. Salvato 2008-5-13 35339 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
  RSA7326  Glycyrrhiza lepidota E. R. Johnson 1933-7-6 5169 Orange 1/2 mile south of Mexican houses, Rancho Santa Ana 122 Comment
  IRVC16624  Glycyrrhiza lepidota Gordon A. Marsh, K. G. Marsh 1979-5-28 Orange Horseshoe Bend, Weir Canyon Ranch, Santa Ana Valley Irrigation Co.; along irrigation ditch. Santa Ana River Comment
  RSA696916  Gnaphalium californicum Mabel Harvey s.n. Orange Silverado Canyon Comment
  RSA749042  Gnaphalium canescens subsp. microcephalum A. C. Sanders, Fred M. Roberts 2008-8-7 35971 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  UCR150566  Gnaphalium leucocephalum Scott D. White, Matt Carlton 2003-11-20 9874 Orange South Coastal Plain, Santa Ana Mtn foothills. San Juan Creek in San Juan Capistrano 37 Comment
  IRVC19530  Gnaphalium luteo-album R. L. Allen 1983-2-24 A644 Orange 3160 Air[way] Ave. along Paularino; weed in blue grass lawn. Costa Mesa Comment
  RSA718964  Gnaphalium luteoalbum Fred M. Roberts, Robert L. Allen 2006-10-8 6416 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  RSA0022433  Gnaphalium microcephalum R. F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49791 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA701690  Gnaphalium palustre Fred M. Roberts, David E. Bramlet 2003-6-6 5898 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, west slopes of Cristianitos Canyon, 0.86 km SSW Gato Gate and 0.39 km W of Cristianitos Road. 149 Comment
  IRVC22959  Gnaphalium ramosissimum Karlin G. Marsh, G. A. Marsh 1982-8-20 Orange Moro Canyon, Crystal Cove State Park; edge of oak riparian woodland by side of road. San Joaquin Hills Comment
  IRVC23151  Gnaphalium stramineum Fred M. Roberts 1985-7-11 2021 Orange San Joaquin Hills: Laguna Canyon, Laguna Canyon Road near Laguna Lakes, 5.0km ENE Signal Peak. southern coastal 112 Comment
  UCR52299  Grindelia camporum B. G. Pitzer, D. C. Hawks 1986-12-17 0382 A Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, on Santiago Cyn Rd., c. 1.0 mi SW of [Irvine Lake] Santiago Reservoir 305 Comment
  IRVC21315  Grindelia camporum var. bracteosa Fred M. Roberts 1982-7-31 790 Orange 0.3km NNW Clemente Survey Mark; 1.2km NNE Civiv Center, San Clemente 220 Comment
  POM156464  Grindelia camporum var. bracteosa L. R. Abrams 1903-4-19 3273 Orange San Juan Comment
  RSA234515  Grindelia camporum var. bracteosa James Henrickson 1970-7-24 4962 Orange 1.5 miles NW of Huntington Beach, along border of Bolsa Chica Salt Marsh at SW end of Huntington Beach Mesa. 8 Comment
  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
  UC407318  Grindelia hirsutula LeRoy Abrams 1903-4-19 3273 Orange Capistrano Comment
  UC897086  Grindelia hirsutula Julian A. Steyermark 1933-10-29 Orange San Clemente, Orange Co., on clay soil of coastal mesa. Comment
  LA97587  Gutierrezia californica David S. Verity; 1974-2-20 sn Orange hills behind South Laguna Comment
  RSA703141  Gutierrezia californica Fred M. Roberts, Art Davenport 2003-9-11 6015 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
  RSA864  Gutierrezia californica J. T. Howell 1927-7-28 510 Orange Nolina Canyon, Rancho Santa Ana 152 Comment
  SD236194  Gutierrezia californica A. C. Sanders, Fred M. Roberts, Amber O Neal 2008-5-9 35288 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 299 Comment
  UCD132608  Gutierrezia californica P. B. Kennedy 1925-1-12 s.n. Orange Irvine Range. 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
  UCSB48104  Gutierrezia californica Fritzke, S.; Roberts, Fred 1982-4-3 Orange Santa Ana Mtns.: San Juan Canyon, Calif. 74, 0.9km E San Juan Guard Station 269 Comment
  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
  UCR80035  Haplopappus squarrosus Scott D. White 1992-10-1 954 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
  RSA0066593  Harpagonella palmeri D. E. Bramlet 2000-4-21 2988 Orange Exposed terraces west of Blind Cyn. and North of Irvine Park. The site is 1.5 km west of Blind Canyon and 76 m north of Irvine Park. This locality is 122 m southwest of the MWD access road. 207 Comment
  NY387959  Hasseanthus elongatus L. Abrams 06 1901 1785 Orange San Joaquin Hills. Comment
  RSA0002527  Hasseanthus elongatus L. R. Abrams 1901-06 1785 Orange San Joaquin Hills Comment
  RSA359731  Hedypnois cretica C. B. Wolf 1938-5-2 9406 Orange City of Fullerton, Francis street, 1200 block E side in vacant lot. 61 Comment
  UCR192229  Hedypnois cretica A. C. Sanders, Fred M. Roberts 2008-5-6 35261 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
  SFV18100  Helianthemum scoparium J. D. Dilley, J. N. Hogue, D. L. Bishop 1998-4-9 257 Orange Santa Ana Mountains. San Juan Canyon at San Juan Hot Springs just inside western border of Cleveland National Forest. 213 Comment
  CAS-BOT-BC305443  Helianthus annuus Ira L. Wiggins 1965-10-24 20285 Orange Along Skyline Drive near intersection with Raymond Street, Fullerton Comment
  SEINET156042  Helianthus annuus Norman C. Cooper 1944-6-4 1366 Orange Elsinore Mtn. Lookout at top. 1067 Comment
  POM201743  Helianthus annuus subsp. lenticularis L. M. Booth 1932-6-29 1230 Orange Newport Bay. Comment
  RSA5244  Helianthus annuus subsp. lenticularis C. B. Wolf 1932-9-13 4032 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
  UC774835  Helianthus ciliaris E. Paddock 1942-7-21 11291 Orange n side Ocean Ave. 1/4 mi w La Mirada Rd.; La Habra, Toler Ranch Comment
  OBI4714  Helianthus ciliaris T. C. Fuller 1962-6-7 8874 Orange Veeh ranch, N of El Toro, ca 11 mi SE of Tustin Comment
  RSA170313  Helianthus ciliaris T. C. Fuller 1962-6-7 8874 Orange Orange County: hillside in grain, Veeh Ranch, N of El Toro, 11 miles SE of Tustin Comment
  SEINET13387984 Image available Helianthus ciliaris T. C. Fuller 1962-6-7 8874 Orange Abundant on hillside in grain, Veeh Ranch, N. of El Toro, CA. 11 mi. SE of Tustin Comment
  IRVC14820  Helianthus gracilentus A. S. Boughey 1968-7-9 401 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  RSA748268  Helianthus gracilentus A. C. Sanders, Fred M. Roberts 2008-6-17 35513 Orange middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  SD136917  Helianthus gracilentus Steve Boyd, Tim Ross 1994-9-14 8356 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area of the Cleveland National Forest. 299 Comment
  SEINET7067514  Helianthus gracilentus A. G. Vestal 1947-6-12 s.n. Orange San Juan Canyon. Coordinate datum: NAD27. UTM Zone 11, 448887mE, 3712881mN. 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
  UCR230222  Helianthus gracilentus Dick Newell, Ed Hill 2011-3-29 099 Orange Peninsular Range; Santa Ana Mtns., 200 yards NE of old coal mine, under power lines, off Coal Rd. below intersection with Upper Blind Cyn. Rd. 482 Comment
  POM369737  Heliotropium curassavicum var. oculatum F. R. Fosberg 1930-7-10 3196 Orange Anaheim Landing. [Los Angeles Co. on label] 5 Comment
  RSA232222  Heliotropium curassavicum var. oculatum James Henrickson 1970-7-24 4994 Orange 2 miles NW of Huntington Beach around small freshwater industrial pond at eastern margin of Bolsa Chica Salt Marsh along Huntington Beach Mesa. 0 Comment
  RSA752718  Heliotropium curassavicum var. oculatum Fred M. Roberts 2009-4-21 7157 Orange Dana Point Headlands: southern cliffs, 0.7 km W Marine Institute at Dana Point Harbor. CNLM Dana Point Preserve. 3 Comment
  CAS-BOT-BC305899  Helminthotheca echioides Ira L. Wiggins 1965-11-5 20322 Orange Near corner of Dowling Street and Crowther Avenue. 1/2 mi. S of Placentia Comment
  RSA699662  Hemizonia fasciculata Keith E. Hoffmaster 1928-5-29 s.n. Orange San Onofre. CP5. Comment
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Nov 19 2013
  UCR107857  Hemizonia fasciculata Scott D. White, B. Leatherman 1998-1-26 6069 Orange Irvine, Univ. of Calif. Irvine Campus: Site of proposed Research Park. SW of main campus circle, c. halfway between Berkeley Avenue and new freeway (Bonita Cyn.) 37 Comment
  UCR193760  Hemizonia fasciculata A. C. Sanders, Fred M. Roberts 2008-7-3 35705 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
  UCR228802  Hemizonia fasciculata Dick Newell, Don Millar 2011-5-24 167 Orange Peninsular Range; Santa Ana Mtns., above Outdoor Education Center on MWD service road, 1.6 miles NW (311 deg. ) of Irvine Lake dam 244 Comment
  RSA74880  Hemizonia fasciculata Elroy Robinson 1935-6-26 s.n. Orange Along Santa Fe Railway, El Toro, south of Los Angeles. 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
  UCR231160  Hemizonia parryi subsp. australis Dick Newell, Don Millar 2011-6-22 191 Orange South Coast, Newport Beach, Delhi Channel near University Drive 5 Comment
  UCR261698  Hemizonia parryi subsp. australis Dick Newell, Don Millar, Judy Booth 2015-5-27 407 Orange South Coast, Newport Beach, New Delhi Channel near University Drive 4 Comment
  UCR94531  Hemizonia parryi subsp. australis Tony Bomkamp 1995-1 s.n. Orange Rancho Mission Viejo, floodplain of Canada Gobernadora west of Casper Regional Park. 140 Comment
  CAS-BOT-BC403799  Hesperocnide tenella Steve Boyd; Tim Ross 1992-5-19 7440 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon from crossing of creek by Lucas Canyon Trail, downstream to confluence with Aliso Canyon 335 Comment
  CAS-BOT-BC143754  Heteromeles arbutifolia Dr. Barton W. Evermann 1918-3-25 s.n. Orange San Clemente Comment
  SD241168  Heteromeles arbutifolia T. B. Salvato 2010-9-27 5123 Orange South Coast: Dana Point Headlands, Harbor Point Park, south of Scenic Drive and Cove Road, beyond the end of Green Lantern Street, overlooking Dana Point Harbor (Dana Point 7.5'Q) 60 Comment
  UCR131873  Heteromeles arbutifolia J. Mallory, V. McCoy 1995-6-30 6454- 58 Orange Santa Ana Mountains: S-facing slope on Windy Ridge, c. 2.5 mi. south of 91 fwy. Comment
  UCR239808  Heteromeles arbutifolia O. F. Clarke 2004-6-23 s.n. Orange South Coast, Newport Back Bay, just south of the Muth Interpretive Center 15 Comment
  SD245469  Heteromeles arbutifolia Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49621 Orange Santa Ana Mountains: about 1 mile above San Juan Fire Station. Comment
  CAS-BOT-BC318899  Heterotheca grandiflora Helen D. Geis 1902-1-1 s.n. Orange Unspecified Comment
  IRVC21773  Heterotheca grandiflora Fred M. Roberts 1984-11-27 1438 Orange Novia St. bridge over San Juan Creek, 0.6km S Bench Mark 133, San Juan Capistrano 31 Comment
  RSA0075816  Heterotheca grandiflora L. M. Booth 1932-5-25 1112 Orange Balboa Island [Newport Bay]. Comment
  SEINET2052420 Image available Heterotheca grandiflora Cesareo Perez 1971-5-12 Orange Huntington State Beach, Pacific Coast Highway at Brookhurst, Huntington Beach. Comment
  UCR224404  Hibiscus trionum Robt. L. Allen 2008-4-9 s.n. Orange South Coast, Irvine, Irvine Valley College, near norhteast corner of Student Services building 45 Comment
  CAS-BOT-BC207961  Hoffmannseggia glauca Goodwin 1933-7-6 s.n. Orange Unspecified Comment
  IRVC18572  Holocarpha virgata Karlin G. Marsh 1980-8-13 Orange S of Trabuco Canyon, Sect. 12, Hinricks Parcel. Santa Ana Mountains Comment
  RSA627782  Hordeum depressum Scott D. White 1998-4-9 6268 Orange UCI Campus; North Campus wetlands reserve area; north of San Joaquin Channel and east of MacArthur Blvd. 15 Comment
  SD181760  Hordeum depressum Valerie Soza, K. Clark,F. Roberts,W. Miller,L. R. Gross,G. Wallace 2001-4-4 1132 Orange Northern edge of Huntington Harbor: Seal Beach U.S. Naval Weapons Station, southeastern edge of Seal Beach National Wildlife Refuge, along roadside 3 Comment
  UCD85590  Hordeum depressum A. A. Beetle 1942-4-19 3094 Orange 20 miles S of Santa Ana, road to Laguna. Comment
  RSA542370  Hordeum intercedens Fred M. Roberts 1988-4-12 3927 Orange Irvine: south of the San Diego Freeway, 1.2 km ENE French Hill., UTM 3724500m N, 427200m E 41 Comment
  RSA592062  Hordeum intercedens R. E. Riefner 1994-3-28 94 -207 Orange S bluffs area in mima terrain at San Clemete State Beach. Comment
  RSA642529  Hordeum intercedens D. E. Bramlet, Sandy Leatherman 1998-5-11 2614 Orange Along ridgeline 1.58km north of Avenida pico and 1.46km west of Cristianitos Canyon. 1.07km southeast of the Segunda Deshecha access road (Telega Valley Rd.), UTM 11S 04 46 69 Comment
  UCR150374  Hordeum intercedens D. E. Bramlet, S. Leatherman 1998-5-21 2624 Orange Coastal Plains & Basins/Coastal Plains region, Adjacent to ridgeline road 122 m N of the Segunda Deshecha Canada access road (Telaga Valley Dr.), 152 m west of Wilson Camp Rd. c. 2.68 km NE of Avenida Pico and 1.52 km west of Cristianitos Canyon 219 Comment
  UCR150377  Hordeum intercedens D. E. Bramlet 1998-5-19 2621 Orange Coastal Plains & Basins/Los Angeles Basin region, San Juan Hills: 4400 ft west of La Pata Ave. and 10,000 ft N of Prima Deshecha Canada. A ridgeline 500 ft east of a small canyon 91 Comment
  UCR168468  Hordeum intercedens D. E. Bramlet, Fred M. Roberts 2003-5-15 3436 Orange Donna O'Neill Reserve, SE corner of Reserve 152 m west of Cristianitos Road and 731 m N of Pico, 122 m NW of the SDGE Substation 98 Comment
  UCR154289  Hordeum murinum Mark A. Elvin 2004-5-2 3405 Orange Southern Coastal, Irvine: San Joaquin Freshwater Marsh, near Campus and University Drives; 1.7 km (air) NNW UC Irvine campus center 3 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
  IRVC23057  Horkelia cuneata subsp. puberula Fred M. Roberts, M. L. Polek 1985-6-18 1953 Orange Santa Ana Mtns: Chiquito Basin, San Juan Trail, 1.8km SW Blue Jay Campground, 2.7km SSE Los Pinos Pk. Peninsular Ranges 866 Comment
  HSC78999  Horkelia cuneata var. puberula Steve Boyd 1981-5-13 Orange Pelican Hill, Irvine Ranch property in the San Joaquin Hills S of Corona del Mar Comment
  UCR186590  Hydrocotyle ranunculoides Robert DeRuff 1996-5-6 493 Orange Southern Coast, Newport Beach, Newport Back Bay, streambed at 23rd St. 3 Comment
  RSA527  Hydrocotyle verticillata J. T. Howell 1927-7-5 273 Orange West side, Rancho Santa Ana [Botanic Garden]. 152 Comment
  IRVC14741  Hypochaeris glabra A. S. Boughey 1968-4-23 205 Orange Black Star Canyon, .5mi below Hidden Ranch; area burned this winter. Santa Ana Mountains Comment
  RSA732247  Hypochaeris glabra A. C. Sanders, Fred M. Roberts 2008-4-22 34998 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
  UCSB47577  Hypochaeris glabra Roberts, Jr., Fred 1980-4-3 Orange San Juan Canyon, Hwy. 74, entrance to lower San Juan Picnic Grounds, Santa Ana Mtns. 409 Comment
  RSA606376  Hypochaeris glabra Jon E. Keeley 1994-4-5 25275 Orange First year burn, east end of Caspers Park S-7 (Keeley 1994) 215 m. 215 Comment
  JEPS19467  Isocoma menziesii var. menziesii Peter H. Raven 1957-9-28 11368 Orange n limits of Surfside 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
  SD124238  Isocoma menziesii var. menziesii C. W. Tilforth 1976-10-21 1225 Orange Slopes above Santa Ana River Canyon on Rancho Santa Ana Comment
  CAS-BOT-BC311673  Isocoma menziesii var. sedoides David D. Keck 1932-9-30 1901 Orange 2 mi. W. of Laguna Beach Comment
  POM147499  Isocoma menziesii var. vernonioides F. M. Reed 1928-4-27 5701 Orange Between Laguna and Newport. Comment
  RSA699284  Isocoma menziesii var. vernonioides J. R. Bruff 1930-10-19 s.n. Orange Santa Ana River bed. 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
  RSA697044  Isocoma veneta var. vernonioides Keith E. Hoffmaster 1927-10-9 s.n. Orange Santa Ana. Comment
  UCR237932  Isomeris arborea Mark A. Elvin 2003-2-2 2258 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  RSA539363  Jepsonia parryi Fred M. Roberts Jr., R. L. Allen 1988-11-30 4165 Orange Aliso-Woods Canyon Regional Park: Niguel Hill, 0.8 km NE Aliso Peak, in Seaview Park. 277 Comment
  RSA701954  Jepsonia parryi Fred M. Roberts, Robert L. Allen 2004-1-16 6021 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.63 km SSW Gato Gate and 0.23km W of Cristianitos Rd. 107 Comment
  CAS-BOT-BC101918  Juglans californica Ira L. Wiggins 1965-10-27 20310 Orange stream near Los Angeles County Line, along Brea Canyon Road Comment
  RSA0011055  Juglans californica D. E. Bramlet 2008-6-5 4291 Orange Santa Ana Mtns foothills: Tributary to Weir Cyn., 731 m N of the SCE Transmission Line & 229m west of Weir Canyon Road. 257 Comment
  UCR229283  Juglans californica R. E. Riefner Jr. 2011-8-25 11- 112 Orange Trabuco Canyon, Trabuco Canyon Road c. 1 mi northwest of O'Neill Regional Park 319 Comment
  UCSB42416  Juglans californica Romspert, A. 1966-4-26 Orange Carbon Canyon; on hill behind La Vida Hot Springs; East side of slope Comment
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Jan 27 2015
  CAS-BOT-BC334501  Juglans hindsii R. E. Riefner, Jr. 2010-9-8 10 -121 Orange City of Laguna Beach, Laguna Canyon, ca 0.15 mi S of El Toro Rd. on E side of Laguna Canyon Rd. 75 Comment
  SD237482  Juglans hindsii R. E. Riefner Jr. 2009-8-12 09 168 Orange Foothills of Santa Ana Mountains, near Silverado, Cook's Corner area, Santiago Canyon Road at Lawrence Canyon Road. USGS Quad: Lake Forest. 334 Comment
  UCR242862  Juglans hindsii R. E. Riefner Jr. 2011-9-10 11- 124 Orange Santa Ana Canyon, Hwy I-91 northbound, south side of fwy, within 100 ft of the Riverside County line 127 Comment
  UCR207558  Juncus acutus O. F. Clarke 2004-6-23 s.n. Orange South Coast, Newport Back Bay, just south of the Muth Interpretive Center 15 Comment
  RSA542517  Juncus acutus subsp. leopoldii Fred M. Roberts, W. Ferren 1987-4-8 3358 Orange Upper Newport Beach Back Bay, west side, North Star Beach, 0.8 km N Coney Island. 0 Comment
  UCR261700  Juncus balticus Dick Newell, Don Millar 2014-9-30 386 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Agua Chinon Wash, 0.6 mi. south of Loma Ridge Rd. 279 Comment
  UCR193498  Juncus bufonius var. congestus A. C. Sanders, T. B. Salvato 2008-5-13 35381 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
  UCSB48092  Juncus bufonius var. congestus Roberts, Fred 1981-4-12 Orange Santa Ana Mtns; San Juan Cyn; Hwy 74; 1.3km by road E San Juan Guard Station; 0.9 km SE Juan Rancho SM 295 Comment
  RSA788923  Juncus dubius Fred M. Roberts 1999-6-23 5245 Orange Peninsular Range, Santa Ana Mtns. Region: Lomas de Santiago: tributary to Santiago Creek, ridge between Limestone Cyn, and Santiago Creek wash across from Pancho Canyon, 1.6 km ENE Bolero Spr. and 1.6 km NNW Bolero Lookout. 396 Comment
  UCR158851  Juncus macrophyllus A. C. Sanders, Mark A. Elvin 2005-9-2 31604 Orange Peninsular Range; Santa Ana Mtns., mouth of Lion Canyon near Lower San Juan Picnic Area, San Juan Creek Canyon 427 Comment
  SD245183  Juncus macrophyllus R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49575 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74). Comment
  RSA754063  Juncus patens A. C. Sanders, Fred M. Roberts 2008-7-16 35856 Orange Lomas de Santiago, upper Hangmans Tree Canyon 395 Comment
  UCR132983  Juncus patens Adrian Wolf 2000-7-13 455 Orange Santa Ana Mtns., 0.4 km SE of Black Star Canyon mouth 290 Comment
  RSA603360  Juncus rugulosus Scott D. White 1997-6-12 5317 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
  UCSB47990  Juncus rugulosus Roberts, Fred 1980-6-25 Orange Santa Ana Mtns; San Juan Canyon below Calif. Rte. 74; 2.4km ENE San Juan Guard Station; 0.3 km WSW BM 1100 290 Comment
  SEINET3282755 Image available 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
  UC536958  Juncus textilis Lawrence M. Booth 1932-6-7 1159 Orange Newport Lagoon Comment
  JEPS67112  Juncus torreyi S. B. Parish and W. F. Parish Oct 1882 1593 Orange Orange Comment
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Jul 18 2010
  RSA101  Juncus xiphioides J. T. Howell 1927-7-18 427 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  RSA542335  Juncus xiphioides Fred M. Roberts, K. Keane 1988-5-25 3985 Orange Ranch Mission Viejo: Lower Canada Chiquita, 2.5 kilometers SSE Medium Rancho Survey Mark. 82 Comment
  RSA7323  Juncus xiphioides E. R. Johnson 1933-7-5 5166 Orange Rancho Santa Ana. 122 Comment
  UCR193276  Juncus xiphioides A. C. Sanders, Fred M. Roberts 2008-6-17 35510 Orange Peninsular Range; Santa Ana Mtns., middle section of Weir Canyon, SSE of Walnut Canyon Reservoir 225 Comment
  UCR193765  Juncus xiphioides A. C. Sanders, Fred M. Roberts 2008-7-3 35704 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
  UCSB48006  Juncus xiphioides Roberts, Fred 1980-7-11 Orange Santa Ana Mtns; Viejo Canyon; 3.0 km ENE San Juan Guard Station; 0.7 km N Hwy 74 355 Comment
  SEINET10929342  Juniperus David B. Dunn 1971-8-13 Dunn 18109 Orange Cultivated plants at Costa Mesa, California. Comment
  UCR251747  Juniperus rigida var. conferta R. E. Riefner Jr. 2014-3-17 14- 70 Orange South Coast, City of Newport Beach, Corona Del Mar, c. 0.5 mi. south from intersection of Poppy Ave./Ocean Blvd. at Little Corona Beach 12 Comment
  CLARK-A1528-5706  Jussiaea repens var. peploides John C. Roos 1949-10-1 4685 Orange Doheney Beach Comment
  RSA293253  Keckiella antirrhinoides D. C. Michener 1980-6-5 3668 Orange San Juan River valley. 300 Comment
  RSA765301  Keckiella antirrhinoides Doris Bowers 1971-4-9 1697 Orange SW of Corona, Santa Ana Mts. 457 Comment
  RSA789586  Keckiella antirrhinoides subsp. antirrhinoides Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49658 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] Comment
  UCR47794  Keckiella antirrhinoides subsp. antirrhinoides D. C. Michener 1980-6-5 3668 Orange Peninsular Range; Santa Ana Mtns., San Juan river valley, on terrace near abandoned mine(s) Comment
  CAS-BOT-BC235529  Keckiella antirrhinoides var. antirrhinoides Robinson; Crocker 1916-3-28 999 Orange Santa Ana Mt Comment
  CAS-BOT-BC235720  Keckiella cordifolia Carl B. Wolf 1932-7-2 3822 Orange Carbon Canyon, 1/8 mi. below La Vida Springs 213 Comment
  RSA401707A  Keckiella cordifolia M. B. Dunkle 1934-6-18 3996 Orange San Juan Canyon 305 Comment
  RSA401777A  Keckiella cordifolia M. B. Dunkle 1933-5-30 s.n. Orange Carbon Canyon Comment
  RSA773556  Keckiella cordifolia Fred M. Roberts 2008-6-3 7028 Orange Lomas de Santiago: Loma Ridge, East Fork Rattlesnake Canyon, ca. 2.6 km NE of Rattlesnake Reservoir spillway and 2.4 km ENE Bee Peak 235 Comment
  UCR150914  Koeleria macrantha Valerie Soza, LeRoy Gross 1999-6-10 528 Orange Santa Ana Mountains, Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road 1555 Comment
  UCR181157  Koelreuteria bipinnata R. E. Riefner Jr. 2006-11-14 06- 673 Orange South Coast, Irvine, along San Diego Creek at Campus Avenue and University Drive 4 Comment
  RSA696161  Lactuca scariola Keith E. Hoffmaster 1927-10 s.n. Orange Santa Ana Comment
  RSA5802  Lactuca serriola C. B. Wolf 1932-6-28 3780 Orange Along western half of no. boundary of 40 acre Valencia Orange grove at Bryant Ave. and Hansen Road. 9 Comment
  RSA894  Lactuca serriola J. T. Howell 1927-7-27 496 Orange Near ranch, Rancho Santa Ana 152 Comment
  RSA12674  Lactuca serriola C. B. Wolf 1934-8-16 6065 Orange Bryant Ranch E of Long Beach, Bixby Ave 100 ft and E of SW corner NW/4 NE/4, S31. 6 Comment
  CHSC26388  Laennecia coulteri James Henrickson 1970-8-22 5297 Orange 2 1/2 miles NNW of Huntington Beach in northern part of Bolsa Chica Salt Marsh. Near oilwell sites. 0 Comment
  SD80932  Laennecia coulteri James Henrickson 1970-8-22 5297 Orange Bolsa Chica Salt Marsh,dry northern portion, 2.5 miles northnorthwest of Huntington Beach Comment
  UCR232763  Lagophylla ramosissima subsp. ramosissima Robt. L. Allen, Linnell R. Allen, Charles W. Allen 2005-10-9 12529 Orange Peninsular Range; Santa Ana Mtns., Los Pinos Potrero, opposite entrance to Falcon Group Camp 1011 Comment
  UCD63304  Lamarckia aurea W. W. Robbins 1931-5-11 2202 Orange Santa Ana. Comment
  RSA697035  Lamarckia aurea Keith E. Hoffmaster 1928-3-13 s.n. Orange Santa Ana. Comment
  RSA184155  Lamium amplexicaule I. L. Wiggins 1966-2-12 20440 Orange Orange grove on W side of State College Blvd. opposite Electra Way, Fullerton. Comment
  UCD132262  Lasiospermum bipinnatum Peter Evans 2013-3-23 s.n. Orange Niguel Botanical Preserve located at 29751 Crown Valley Parkway, Laguna Niguel. 99 Comment
  CAS-BOT-BC338908  Lasthenia californica Agnes M. Bowman 1899-6-1 s.n. Orange Orange Comment
  IRVC19035  Lasthenia californica T. Ackerman 1982-4-24 82 -261 Orange south of Live Oak Canyon Rd., trail road from Methodist Church. Santa Ana Mountains Comment
  UCR70756  Lasthenia glabrata subsp. coulteri C. B. Wolf 1932-3-8 02691 Orange South Coast, Sunset Beach, [Bolsa Chica] at southern city limits 2 Comment
  RSA627758  Lasthenia gracilis Scott D. White 1998-3-24 6230 Orange University of California, Irvine Campus: Site of proposed Research Park. Southwest of main campus circle, ca. halfway between Beerkeley Avenue and new freeway (Bonita Canyon). 36 Comment
  SEINET6073121  Lathyrus laetiflorus Unknown 1988-1-12 5117 Orange Cleveland National Forest, San Juan Creek at Lower San Juan Campground. Comment
  POM9824  Lathyrus vestitus subsp. alefeldii P. A. Munz, R. D. Harwood 1920-5-25 3732 Orange Silverado Canyon 549 Comment
  RSA405743  Lathyrus vestitus subsp. alefeldii Anstruther Davidson 1923-4-1 s.n. Orange Trabuco Canyon. Comment
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Jan 11 2016
  IRVC17039  Lathyrus vestitus subsp. laetiflorus G. Howard 1965-3-25 Orange [Newport] Back Bay. Newport Beach Comment
  JEPS55289  Lathyrus vestitus var. alefeldii Frank W. Peirson 1925-4-10 Orange Silverado Canyon 457 Comment
  RSA603347  Lemna gibba Scott D. White, B. Leatherman 1997-6-12 5325 Orange East of San Juan Capistrano: San Juan Creek between Highway 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi E of I-15 / Hwy 74 junction. 46 Comment
  CDA25745  Leonurus sibiricus O. F. Clarke, A. C. Sanders 2008-2-19 s.n. Orange South Coast; Fullerton; weeds at California State University Fullerton Arboretum. Comment
  SD152820  Lepechinia cardiophylla Steve Boyd, Kyle Boyd 1992-7-9 7653 Orange Northern Santa Ana Mountains, 3.5 miles south of junction of Main Divide and Skyline Roads. Comment
  UC909677  Lepechinia cardiophylla John Thomas Howell 1927-6-26 2606 Orange n Santa Ana Mountains, Claymine Canyon Claymine Canyon; Santa Ana Mountains, Claymine Canyon 609 Comment
  UCR27070  Lepechinia cardiophylla T. P. Krantz 1981-6-18 s.n. Orange Santa Ana Mtns, Ridge west of Sierra Peak along the roadside Comment
  RSA697417  Lepidium didymum J. R. Bruff 1927-3-22 2 -P Orange Near Newport. Comment
  CAS-BOT-BC89527  Lepidium lasiocarpum Philip A. Munz 1932-3-29 12191 Orange Costa Mesa. Comment
  IRVC1094  Lepidium lasiocarpum L. Burns 1965-4-4 Orange Trabuco Canyon. Santa Ana Mountains Comment
  RSA697450  Lepidium lasiocarpum Snow 1929-2-25 44 Orange E. of Stanton. Comment
  UC494728  Lepidium lasiocarpum var. lasiocarpum Philip A. Munz 1932-3-29 12191 Orange Costa Mesa Comment
  RSA753424  Lepidium lasiocarpum var. lasiocarpum D. E. Bramlet 2008-4-14 4176 Orange Eastern Upper Weir Cyn., 83m S dirt access road & 272 m west of Gypsum Cyn. 417 Comment
  IRVC29818  Lepidium latifolium Mary H. White, Mark A. Elvin 2006-9-23 92306 4 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
  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
  OBI70646  Lepidium pinnatifidum Louis C. Wheeler 1947-5-4 6476 Orange 4.5 mi S of Santa Ana: South Main Street extension, 0.8 mi S of Newport Ave Comment
  UCSB59357  Lepidium pinnatifidum Roberts, Jr., Fred 1987-7-8 Orange Irvine; San Diego Creek near San Diego Fwy. crossing, 3.2 km. N UC Irvine campus center; UTM 3726200m N, 422500m E 5 Comment
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Nov 17 2018
  RSA773551  Lepidium virginicum var. robinsonii Fred M. Roberts 2008-6-5 7033 Orange Loma Ridge, East Fork Rattlesnake Canyon, ca. 2.2 km ENE Rattlesnake Reserovir spillway and 2.3 km WNW Bee Peak 202 Comment
  RSA776395  Lepidium virginicum var. robinsonii Orlando Mistretta, Christine Mistretta 2010-4-23 5072 Orange Vicinity of Diamond Bar. Hills just E of the State Hwy 57, N of Tonner Canyon Rd, along Southern California Edison transmission line corridor (Segment 8, map sheet 80 per TRTP survey 2010) 249 Comment
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Nov 17 2018
  RSA719404  Leptochloa fusca subsp. uninervia Fred M. Roberts, Robert L. Allen 2006-10-8 6431 Orange San Juan Capistrano: San Juan Creek Flood Control Channel, c.a. 0.2 to 0.3km N Stonehill Dr. bridge and 1.1km SSE Marco Forster Jr. High Sch. 4 Comment
  IRVC27504  Leptochloa uninervia Mark A. Elvin 2004-5-2 3420 Orange Irvine: San Joaquin Freshwater Marsh, near Campus and University Drs., 1.7km (air) NNW UC Irvine campus center. Southern Coastal 3 Comment
  RSA698316  Leptodactylon californicum Minor Warne 1934-4-7 s.n. Orange Santiago Canyon. Comment
  UCR133165  Leptodactylon californicum Adrian Wolf 2000-3-24 458 Orange Santa Ana Mtns., North Ranch Policy Plan Area, Lake View Road 518 Comment
  POM13830  Leptosiphon androsaceus P. A. Munz 1922-4-29 5035 Orange Leach Canyon, Santa Ana Mts. 610 Comment
  RSA699631  Leptosiphon floribundus Keith E. Hoffmaster 1934-4-8 s.n. Orange Gypsum can (n. Corona), Santa Ana Mts Comment
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Dec 11 2011
  POM364667  Leptosiphon floribundus Albert J. Perkins 1920-5-18 s.n. Orange Frabuco Canon Comment
  CAS-BOT-BC227027  Leptosiphon floribundus subsp. floribundus L. R. Abrams 1901-6-1 1809 Orange Santiago Peak Trail Comment
  SD28081  Leptosiphon liniflorus Carl B. Wolf 1932-5-19 3637 Orange Rancho Santa Ana Botanic Garden, west of the tennis court. 198 Comment
  UC1618069  Leptosiphon parviflorus Donald G. Nelson 1935-7-6 203 Orange San Juan Canyon Comment
  RSA739779  Leymus condensatus A. C. Sanders, Fred M. Roberts 2008-7-3 35666 Orange Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 365 Comment
  SEINET10804137  Limonium Richard E. Riefner Jr. 2006-8-13 Riefner 06 -391 Orange Upper Newport Bay at Jamboree Rd. Newport Beach. UTM: 11S 0419547E 3723812N. 9 Comment
  CDA23580  Limonium binervosum A. Thomas, Mark A. Elvin 2006-9-23 609237 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
  RSA68751  Limonium californicum var. mexicanum F. W. Peirson 1924-8-29 5048 Orange 2.5 miles from Balboa on road inland along creek. Comment
  UCR186424  Limonium otolepis Robert DeRuff 1997-5-23 504 Orange Southern Coast, Newport Beach, Newport Back Bay, Delhi Channel 0 Comment
  UCR6061  Limonium perezii Sue Freeman 1966-3-27 s.n. Orange South Coast, Laguna, off end of Wave Street 6 Comment
  RSA723547  Limonium ramosissimum R. E. Riefner 2005-11-4 5 -739 Orange City of Rancho Santa Margarita, along Robinson Ranch Rd. near North Peak Rd. 500 Comment
  UCR182901  Limonium ramosissimum Dean Kelch 2006-12-9 06 .547 Orange Along Newport Back Bay Dr. in side canyon 6 Comment
  IRVC29782  Limonium sinuatum Mark A. Elvin, Dean Kelch 2006-12-9 5294 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
  RSA469962  Linanthus aureus Shaw 1923-03 s.n. Orange Near Irvine Comment
  CAS-BOT-BC226772  Linanthus californicus Marcus E. Jones 1926-3-10 s.n. Orange Near Santa Ana Canon [Canyon] Comment
  HSC17061  Linanthus californicus S. M. Clapp 1966-4-7 20 Orange Irvine Blvd., S of Lake Irvine 152 Comment
  SD42979  Linanthus californicus E. B. Harbison Mar 1948 Orange San Juan Camp. Comment
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Sep 30 2013
  RSA468459  Linanthus californicus N. C. Cooper 1949-5-1 3940 Orange San Juan Canyon. 610 Comment
  JEPS89271  Linanthus dianthiflorus Rimo Bacigalupi and L. Heckard, P. C. Hutchison 1962-3-16 8233 Orange 2 mi n Doheny Beach State Park (fields above ocean) Comment
  RSA698395  Linanthus dianthiflorus L. C. Hull 1934-3-11 s.n. Orange Ortega Highway. Comment
  POM36578  Linanthus dianthiflorus subsp. dianthiflorus M. B. Dunkle 1935-2-23 4338 Orange Dana Point. 15 Comment
  UC1618056  Linanthus floribundus Donald G. Nelson 1935-7-6 203 Orange San Juan Canyon Comment
  UC729649  Linanthus floribundus subsp. glaber E. R. Johnson May 1932 Orange between Skyline Drive and Santiago Peak; Santa Ana Mts. 1219 Comment
  UCR175058  Linaria canadensis Vanessa Lee 2005-4-24 s.n. Orange South Coast, Crystal Cove, Laguna Beach, above Pacific Coast Highway 61 Comment
  RSA718  Linaria canadensis var. texana J. T. Howell 1928-2-25 835 Orange Near Bee Canyon, Rancho Santa Ana. 152 Comment
  UCR186427  Linum grandiflorum Robert DeRuff 1994-5-16 469 Orange Southern Coast, Newport Beach, Newport Back Bay, south of 23rd St., below a row of houses 5 Comment
  CAS-BOT-BC520399  Liquidambar styraciflua R. E. Riefner, Jr. 2014-11-28 14 -406 Orange City of Newport Beach, SW corner Jamboree Rd at MaArthur Blvd. 16 Comment
  UCR253008  Liquidambar styraciflua Robert DeRuff 2013-8-12 581 Orange South Coast, Newport Back Bay, along storm drain from Eastbluff Dr. 3 Comment
  RSA468223  Lithophragma affine subsp. mixtum Albert J. Perkins 1913-4-27 s.n. Orange Trabuco Canon. Comment
  IRVC21406  Lobelia dunnii var. serrata A. S. Boughey 1968-7-9 405 Orange Santa Ana mtns: upper Santiago Canyon. Peninsular Ranges Comment
  IRVC298  Lobelia dunnii var. serrata R. Acevedo 1965-4-3 Orange east bluff. Newport Beach Comment
  HSC6864  Lobularia maritima J. W. Johnson 1961-3-29 Orange Newport Beach, slope overlooking Upper Newport Bay. Comment
  RSA719409  Lobularia maritima Fred M. Roberts, Robert L. Allen 2006-10-8 6426 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
  UCR267210  Logfia arizonica Fred M. Roberts, Megan Lulow 2009-3-18 7135 Orange Santa Ana Mtns., LOMAS DE SANTIAGO: Loma Ridge, Lower Hicks Canyon, about 350 meters from south side of Haul Road, 1.9 km E Rattlesnake Cyn. Reservoir Dam and 2.1 km W Bee Peak 172 Comment
  CAS-BOT-BC283492  Lolium multiflorum Carl B. Wolf 1932-6-13 3728 Orange Fullerton, Malvern, and Nicholas Avenues 53 Comment
  UC729655  Lolium multiflorum Carl B. Wolf 1932-6-13 3717 Orange Fullerton; Malvern and Nicholas Avenues 53 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
  UCR100179  Lolium perenne Scott D. White 1993-3-5 1125 Orange Tustin. Marine Air Corps Air Station: SE of Red Hill Ave and NE of Barranca 15 Comment
  UCR2521  Lolium perenne subsp. multiflorum F. M. Reed 1928-5-22 5976 Orange South Coast, Laguna Village 30 Comment
  RSA5946  Lolium perenne subsp. multiflorum C. B. Wolf 1932-7-7 3858 Orange Pump house on Bryant Ave., 0.5 mile E of Los Alamitos Blvd. 8 Comment
  RSA0011621  Lolium rigidum Rankin s.n. Orange Costa Mesa. Comment
  POM48554  Lomatium lucidum F. M. Reed 1925-5-14 4982 Orange Aliso Canon. 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
  RSA751430  Lonicera subspicata A. C. Sanders, Fred M. Roberts 2008-7-3 35670 Orange Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 365 Comment
  UCR240075  Lonicera subspicata Dick Newell, Don Millar 2012-5-22 257 Orange Peninsular Range; Santa Ana Mtns., on Lake View Rd. under the powerlines, 0.12 mi. SW of State Spur Rd. 593 Comment
  POM50583  Lonicera subspicata var. denudata Helen D. Geis 1900-1 518 Orange Hills back of Santa Ana. Comment
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Aug 8 2010
  RSA455383  Lonicera subspicata var. denudata N. C. Cooper 1944-6-4 1338 Orange San Juan Canyon. 305 Comment
  RSA768119  Lonicera subspicata var. johnstonii E. W. Lathrop 1974-6-27 7424 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  RSA450859  Lotus argophyllus Gordon Marsh, K. G. Marsh 1977-11-21 s.n. Orange Santa Ana Mts.: N side of Ortega Hwy, near Hwy marker #31, near O.C. Surveyor Bench Mark #3W-24-72. Comment
  RSA0006681  Lotus hamatus J. T. Howell 1927-6-8 56 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  POM186867  Lotus heermannii Joseph A. Ewan 1929-6-28 3621 Orange Santiago Canyon, Santa Ana Mts. 366 Comment
  RSA621863  Lotus heermannii var. heermannii R. S. Woglum 1932-4-16 s.n. Orange Trabuco Canyon, Santa Ana Mountains, Cleveland National Forest Comment
  RSA662072  Lotus purshianus J. C. Roos 1965-6-16 s.n. Orange Dana Point near Doheney Beach. Comment
  RSA220984  Lotus salsuginosus E. W. Lathrop 1966-3-23 6103 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  IRVC19937  Lotus salsuginosus subsp. salsuginosus Gordon A. Marsh, K. G. Marsh 1983-3-2 Orange burn area on ridge between Coal and Gypsum Canyons, Santa Ana Mountains Comment
  JEPS55886  Lotus scoparius Alice King May 1902 Orange Newport Comment
  POM201833  Lotus scoparius L. M. Booth 1932-5-12 1025 Orange Newport Bay. Comment
  RSA697977  Lotus scoparius Jeanne Paxton 1934-2-25 s.n. Orange Sugar Loaf Canyon, Arch Beach Comment
  SEINET10484472  Lotus scoparius Melvin L. Conrad, David B. Dunn 1973-6-13 Conrad 7127 Orange In vicinity of laguna beach. Corolla yellow fading to orange. 152 Comment
  RSA732275  Lotus scoparius subsp. brevialatus A. C. Sanders 2008-4-29 35121 Orange Lomas de Santiago, western end of Loma Ridge on road to sheriffs training facility, c. 1.5 mi. SW of Santiago Reservoir. 335 Comment
  UCR252212  Lotus scoparius subsp. scoparius Amanda C. Swanson 2013-4-21 28 Orange Peninsular Range; Santa Ana Mtns., hiking trail across from Tucker Wildlife Sanctuary, less than 0.1 mi. from trailhead 434 Comment
  POM250348  Lotus strigosus I. W. Clokey 1932-3-1 5328 Orange Laguna Beach. Comment
  RSA629056  Lotus strigosus Valerie L. Soza, LeRoy Gross 1999-6-10 523 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road. 1554 Comment
  RSA680915  Lotus strigosus Scott D. White 2003-3-21 8800 Orange Santa Ana Mountain Foothills: Rancho Mission Viejo. East-facing slopes above an unnamed tributary to San Juan Creek. 122 Comment
  UC864909  Lotus strigosus I. W. Clokey 1932-3-1 5328 Orange Laguna Beach Comment
  UCR103215  Lotus strigosus Scott D. White 1997-2-19 4694 Orange Santa Ana Mtns, above Modjeska Canyon; proposed water tank site 488 Comment
  UCR281557  Lotus strigosus Mitch Provance, Jeremiah George 2017-3-20 317- 114 Orange West Coyote Hills, Fullerton, vicinity of Utility Access Roads E of Gilbert Street and N of Castlewood Dr., on land previously occupied by oil fields. 137 Comment
  SEINET6932554  Lotus strigosus Wanda P. Vestal, A. G. Vestal 1955-3-24 3458 -B Orange Trabuco Canyon, about 5 miles east of El Toro. Comment
  IRVC20398  Lotus strigosus var. strigosus Fred M. Roberts 1983-3-27 947 Orange Dana Point headlands: just south of Dana Strand Rd., 0.5km W Dana Point Harbor; 0.8km SSW Richard Henry Dana School, southern coastal 80 Comment
  IRVC11703  Lotus strigosus var. strigosus R. Yarnell 1966-4-1 121 Orange near CSUF in open field. Fullerton Comment
  IRVC17284  Lotus strigosus var. strigosus Karlin G. Marsh 1980-5-5 Orange Rancho Mission Viejo: Planning area; along road way. Southern Coastal Comment
  RSA406435  Lotus unifoliolatus M. B. Dunkle 1934-6-18 3988 Orange San Juan Canyon; Southern Coastal 305 Comment
  RSA562813  Lotus wrangelianus Steve Boyd, T. S. Ross 1992-5-20 7485 Orange Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon at the Lucas Canyon Trail crossing. 320 Comment
  CDA1047  Ludwigia peploides D. G. Kelch 2006-12-9 6 .561 Orange Irvine. University Dr along tidal creek just E of I-73. Comment
  IRVC28914  Lupinus adsurgens R. E. Reifner 1994-5-22 94 384 Orange San Onofre State Beach; N boundary, W of Pico Ave. Southern Coastal Comment
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Nov 19 2013
  RSA699718  Lupinus albifrons var. eminens Keith E. Hoffmaster 1928-5-23 531 Orange San Onofre. Comment
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Nov 19 2013
  IRVC8531  Lupinus bicolor subsp. umbellatus Charles W. Sexton 1973-3-19 s.n. Orange Irvine: Bonita Canyon Rd. Southern Coastal Comment
  UCR234148  Lupinus excubitus Dick Newell, Judy Booth 2012-5-6 248 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Road, 1.2 miles NE of Maple Springs gate, Cleveland National Forest 695 Comment
  CAS-BOT-BC216671  Lupinus excubitus subsp. hallii Charles Piper Smith 1946-4-12 46153 Orange Santa Ana Canyon Comment
  SEINET10452686  Lupinus excubitus subsp. hallii Stark 1933-2-3 STARK 19497 Orange Garden #6455 (from 1780 many generations). Comment
  IRVC2308  Lupinus excubitus var. hallii B. Mawdsley 1965-5-2 s.n. Orange Cleveland National Forest; Silverado [Canyon]. Santa Ana Mountains Comment
  POM2477  Lupinus excubitus var. hallii Edward L. Greene 1903-4-1 4102 Orange Anaheim Comment
  RSA6197  Lupinus excubitus var. hallii Carl B. Wolf 1932-5-27 3698 Orange Santa Fe R R, 3/4 mile West of Orange County. 91 Comment
  RSA30487  Lupinus excubitus var. hallii B. D. Stark 1933-2-3 11192 Orange Atwood. 91 Comment
  RSA731993  Lupinus hirsutissimus A. C. Sanders, L. Farley, F. M. Roberts, D. E. Bramlet 2008-4-1 34654 Orange Peninsular Range: Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir 250 Comment
  IRVC15375  Lupinus latifolius Charles W. Sexton 1974-5-28 s.n. Orange Trabuco Canyon below Yeager's Mesa. Santa Ana Mountains Comment
  RSA682918  Lupinus microcarpus Scott D. White, Amanda Duchardt 2003-5-1 9152 Orange Santa Ana Mtn Foothills; slopes above the west side of Canada Gobernadora and adjacent small canyon to the west. 76 Comment
  JEPS65102  Lupinus microcarpus var. densiflorus Alice King June 1908 Orange Santa Ana Comment
  IRVC21666  Lupinus microcarpus var. microcarpus R. L. Allen 1979-2-28 A 6 Orange Mission Viejo: right shoulder of Interstate 5, northbound, near Alicia Bridge. Southern Coastal Comment
  SEINET3131617  Lupinus sparsiflorus Unknown 1903-4-19 3277 Orange Near San Juan Comment
  RSA405  Lupinus sparsiflorus subsp. sparsiflorus J. T. Howell 1928-2-25 843 Orange Nolina Canyon, Rancho Santa Ana. 152 Comment
  RSA788817  Lupinus sparsiflorus subsp. sparsiflorus Robert F. Thorne, E. W. Lathrop, G. Marshs 1977-5-4 49804 Orange Santa Ana Mountains: Trabuco Canyon Comment
  RSA28731  Lupinus sparsiflorus subsp. sparsiflorus R. S. Woglum 1938-5-8 1614 Orange Ortega Hwy, Santa Ana Mts Comment
  UCR106270  Lupinus succulentus B. G. Pitzer, M. Georgiady 1997-4-5 3065 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
  IRVC21926  Lupinus succulentus N. D. Johnson 1985-3-8 s.n. Orange Newport Beach: Corona del Mar, Jasmine Canyon; northeast-facing canyon slope in Erodium, Medicago and Avena plant association. Southern Coastal Comment
  IRVC2358  Lupinus truncatus B. Newman 1965-3-28 s.n. Orange Trabuco Canyon. Santa Ana Mountains Comment
  UCR193438  Lupinus truncatus A. C. Sanders, Mitch Provance 2008-5-20 35393 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, mouth of Hangman Tree Canyon just above confluence with Santiago Creek Canyon, c. 1/2 mile below Modjeska Canyon confluence 366 Comment
  UCR203985  Lupinus truncatus Fred M. Roberts 2008-3-12 6726 Orange South Coast, Dana Point Headlands Center for Natural Lands Mgmt. Preserve, west side, c. 0.8 km west of Marine Institute, Dana Point Harbor 50 Comment
  SD155417  Lycium brevipes var. brevipes Craig Reiser 2001-3-21 Orange San Clemente, south of the intersection of Calafia and Ola Vista. Comment
  SBBG128745  Lycium californicum R. E. Riefner Jr. 2012-11-24 12 -558 Orange City of San Clemente, Presidio Ave ca. 0.2 mi S of Ave Pico 34 Comment
  OBI33516  Lysimachia arvensis Nancy J. Moriarty 1973-5-27 730527 -3 Orange San Clemente State Beach 1 mi S of the end of Ave Califia in the sand below the bluffs Comment
  PASA1878  Lythrum californicum Frank W. Peirson 1924-8-29 Orange 4 miles south of Santa Ana Comment
  UCSB47995  Lythrum californicum Roberts, Fred 1980-7-7 Orange Santa Ana Mtns; San Juan Canyon, Hwy 74, 2.4km ENE San Juan Guard Station; 0.3km W Bench Mark 1100 315 Comment
  RSA0014846  Lythrum californicum P. A. Munz 1918-5-4 2206 Orange Laguna. Near pond. Comment
  UCSB25001  Lythrum hyssopifolia Booth, L. 1932-7-19 Orange Bolsas Creek Comment
  CAS-BOT-BC206252  Malacothamnus fasciculatus C. B. Wolf 1931-7-25 1166 Orange Along the road at north side of the Pear Orchard, Rancho Santa Ana, Santa Ana Can. 121 Comment
  SD87624  Malacothamnus fasciculatus F. W. Pearson 1924-5-31 4662 Orange sea bluffs, Laguna Comment
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Jul 15 2013
  UCR131893  Malacothamnus fasciculatus J. Mallory, V. McCoy 1995-7-3 6454- 103 Orange Santa Ana Mountains: Blind Canyon, c. 0.5 mi. east of confluence with Santiago Canyon, on a W-facing slope. north of Irvine Lake 300 Comment
  UCR197686  Malacothamnus fasciculatus A. C. Sanders, Fred M. Roberts 2008-9-18 36064 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Santiago Creek Canyon c. 1 mile above the highway bridge 330 Comment
  CDA23124  Malacothrix saxatilis Mark A. Elvin, D. G. Kelch 2006-12-9 5328 Orange Southern Coastal; Newport Backbay; along Bayside Drive ca. 500 meters northeast of road to CA Department of Fish and Game office. Comment
  UCR193543  Malacothrix saxatilis A. C. Sanders, Fred M. Roberts 2008-7-3 35669 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, off Windy Ridge Rd. below saddle on ridge above the Eastern Transportation Corridor 415 Comment
  CAS-BOT-BC322561  Malacothrix saxatilis var. saxatilis B. Pitzer; M. Georgiady 1997-4-5 3076 Orange Crystal Cove state Park along No Dogs Trail to just below intersection with Poles trail, San Joaquin Hills 152 Comment
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Nov 7 2017
  UCR224156  Malacothrix saxatilis var. saxatilis Fred M. Roberts 2008-7-10 7068 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
  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
  CDA1091  Malephora crocea D. G. Kelch 2006-12-9 6 .543 Orange Along Newport Back Bay Dr. in side canyon. Comment
  UCR236677  Malephora crocea Fred M. Roberts, Lee Ann Carranza, Jeff Roseler 2008-10-9 7126 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve, at base of cliff along south edge, 0.7 km west of Marine Institute, Dana Point Harbor 3 Comment
  CAS-BOT-BC167852  Malosma laurina John Thomas Howell 1927-7-24 2826 Orange Sandy floor of Claymine [Canon] Canyon, n. Santa Ana Mts. 152 Comment
  RSA12784  Malosma laurina Percy C. Everett 1934-10-4 6209 Orange N side of Irrigation Canal, opp. Orange Co. Plant Sanctuary, Rancho Santa Ana. 122 Comment
  SEINET10936202  Malosma laurina David B. Dunn 1971-8-13 Dunn 18126 Orange Cultivated plants vicinity of Laguna Beach. Comment
  SD43546  Malva assurgentiflora Carl B. Wolf 1944-11-29 11497 Orange Open field in vacant lots, southeast of Costa Mesa. 22 Comment
  UC1929557  Malva nicaeensis Scott D. White, Justin Wood 2008-4-22 11907 Orange Chino Hills: Telegraph Canyon Road, E of Carbon Canyon Regional Park. Comment
  RSA759167  Malva parviflora A. C. Sanders, Fred M. Roberts 2008-6-17 35456 Orange Lomas de Santiago, Hicks Canyon Haul Road 0.5 mi. east of the Foothill Transportation Corridor 244 Comment
  RSA657743  Malva parviflora Ken Greby 1985-4-18 22 Orange alongside Laguna Canyon Rd. approx. 1.5 km. NE from El Toro Rd. 46 Comment
  RSA716091  Malvaviscus arboreus Fred M. Roberts 2006-7-27 6394 Orange San Joaquin Hills: Laguna Beach, Temple Hill, 731 Nyes Place, 1.0km NNE Golf Island. 174 Comment
  RSA5943  Malvella leprosa Carl B. Wolf 1932-7-7 3855 Orange Bryant Ranch. On Bryant Avenue. 0.1 mile E of Los Alamitos Blvd. (0.1 mi E of NW corner of SE 1/4 sect 30) 8 Comment
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Apr 10 2016
  RSA699278  Malvella leprosa Keith E. Hoffmaster 1933-5-22 631 Orange Santa Ana Comment
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Jan 22 2008
  RSA696064  Marah macrocarpa Keith E. Hoffmaster 1928-12-30 s.n. Orange San Onofre. Comment
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Nov 19 2013
  RSA734010  Marah macrocarpa A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34619 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, upper Hicks Canyon, along haul road c. 1.75 mi. NE of Rattlesnake Reservoir. 366 Comment
  UCSB47970  Marah macrocarpa Roberts, Jr., Fred 1980-2-17 Orange Dana bluffs along Scenic Drive Road, northwest of and above Dana Point Harbor, Dana Point 58 Comment
  HSC14229  Marrubium vulgare C. L. Hitchcock, C. V. Muhlick 1964-3-17 23073 Orange 8 mi. E of Yorba Linda, Santa Ana Canyon. Comment
  RSA701971  Marrubium vulgare Fred M. Roberts, David E. Bramlet 2003-6-20 5927 Orange Rancho Mission Viejo: Donna O Neill Land Conservancy, tributary to Christianitos Cyn, along Back Road, 1.48 km WNW Sycamore Gate. 189 Comment
  RSA733980  Marrubium vulgare Keith E. Hoffmaster 1926-12-18 422 Orange Santa Ana. Comment
  RSA650826  Marrubium vulgare Daniel Truong 1991-5-13 24 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  RSA657  Marrubium vulgare J. T. Howell 1927-7-22 457 Orange Botany Garden, Rancho Santa Ana [Botanic Garden] 152 Comment
  CAS-BOT-BC536064  Marsilea drummondii R. E. Riefner, Jr. 2008-6-22 08 -209 Orange City of Yorba Linda, Santa Ana Canyon, Santa Ana River, La Palma Ave., near Old Village Road 95 Comment
  UCD170385  Marsilea drummondii R. E. Riefner Jr. 2008-6-22 08- 209 Orange City of Yorba Linda, Santa Ana Canyon, Santa Ana River, La Palma Ave. near Old Village Road. 95 Comment
  RSA665955  Marsilea vestita Fred M. Roberts, Michelle Lee, Kristen Szabo 2001-4-13 5426 Orange Rancho Mission Viejo: South of San Juan Creek, 0.6km WNW Median Rancho Survey Marker., PCR Vernal Pool 2. 183 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
  RSA202176  Matricaria occidentalis L. M. Booth 1932-5-12 1011 Orange Newport Bay. Comment
  JEPS13969  Matthiola incana D. L. Crawford 1922-8-3 743 Orange Aliso Point; Laguna Beach Region, Aliso Point Comment
  UC1607983  Medicago Donald G. Nelson 1935-3-30 200 Orange hills e. Fullerton (at head of Raymond Ave.) 76 Comment
  IRVC2371  Medicago polymorpha D. Van Gorden 1965-5-2 s.n. Orange Anaheim and Meyer Field. Costa Mesa Comment
  IRVC2372  Medicago polymorpha Robin Hobson 1965-4-10 s.n. Orange Santa Ana Heights; 2431 Mesa Dr. Southern Coastal Comment
  JEPS65509  Medicago polymorpha Lawrence M. Booth 1932-5-19 1079 Orange Newport Bay Comment
  SD168149  Medicago polymorpha J. B. Anderson 1966-4-16 581 Orange Corona Del Mar; Buck Gully-Little Corona Beach. Comment
  RSA737236  Medicago polymorpha R. E. Riefner 2008-9-5 08 -278 Orange City of Lake Forest, 0.2 miles W of Portola Pwy along Aliso Creek. 222 Comment
  RSA0054890  Medicago sativa Clyde Moesser s.n. Orange Santa Ana. Comment
  RSA746475  Medicago truncatula R. E. Riefner Jr. 2008-5-19 08 -92 Orange City of San Juan Capistrano, general vicinity of Antonio Pkwy. at Hwy 74 (Ortega Hwy). 88 Comment
  UCD170648  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
  RSA588777  Melica frutescens Fred M. Roberts 1990-4-26 4585 Orange Silverado Canyon opposite White Canyon, ca. 4.7 km NNE Bolero Lookout 442 Comment
  RSA403491  Melica imperfecta A. M. Johnson 1934-4-15 4416 Orange Carmen's Laguna Comment
  RSA403492  Melica imperfecta Thekla Mohr 3219 Orange Laguna. Comment
  RSA542365  Melica imperfecta Fred M. Roberts 1988-4-8 3896 Orange Lomas de Santiago: Loma Ridge, Central Linestone Canyon, 4.1 kilometers NNW Bolero Lookout. 323 Comment
  RSA751312  Melica imperfecta A. C. Sanders, Fred M. Roberts 2008-5-6 35265 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
  SD123844  Melica imperfecta E. W. Lathrop 1966-5-13 6298 Orange Santa Ana Mountains, 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland Nat'l Forest 395 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
  UCR100307  Melica imperfecta B. G. Pitzer 1997-4-15 3141 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
  UCR192224  Melica imperfecta A. C. Sanders, Fred M. Roberts 2008-5-6 35265 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, slope SE of road junction along ridge road, near head of Agua Chinon Canyon, 2.4 miles north of El Toro 470 Comment
  IRVC19417  Melilotus indicus R. L. Allen 1983-2-12 A 634 Orange Fullerton; Hillcrest Park, slope bordering E Valley View Drive. Southern Coastal Comment
  IRVC2405  Melilotus indicus L. McCabe 1965-4-14 s.n. Orange Newport Beach; Corona del Mar. Southern Coastal Comment
  IRVC2410  Melilotus indicus Debbie Frees 1965-3-13 s.n. Orange Silverado Canyon. Santa Ana Moutnains Comment
  IRVC2413  Melilotus indicus Kathy Durica 1965-4-25 s.n. Orange Silverado Canyon Santa Ana Mountains Comment
  IRVC2416  Melilotus indicus McGuire 1965-3-14 s.n. Orange Newport Beach; Bayside Dr. Southern Coastal Comment
  IRVC2417  Melilotus indicus D. Van Gorden 1965-5-2 s.n. Orange Costa Mesa; 18th Street. Southern Coastal Comment
  IRVC2419  Melilotus indicus B. Mawdsley 1965-5-1 s.n. Orange Newport Beach; Corona del Mar, 520 Narcissus Dr. Southern Coastal Comment
  JEPS65539  Melilotus indicus Alice King April, 1908 Orange Santa Ana 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
  POM49187  Mentzelia affinis Helen D. Geis 1900-1 517 Orange Hills back of Santa Ana. Comment
  UCR203876  Mentzelia micrantha R. E. Riefner Jr. 2007-6-11 07- 252 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, upper Fremont Canyon, Donaldson Ranch area 382 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
  UC1241129  Mesembryanthemum crystallinum Peter H. Raven 1957-9-28 11400 Orange Laguna Beach Comment
  RSA65527  Mesembryanthemum crystallinum F. W. Peirson 1920-6-25 2210 Orange 5 miles south of San Juan Capistrano. Comment
  CHSC26281  Mesembryanthemum nodiflorum Michael Ward 1970-8-22 V- 4 Orange Ca. 4 mi. So. of Seal Beach, NE of Pacific Coast Hwy. and Bolsa Chica St. Pk. at Bolsa Chica Salt Marsh. 0 Comment
  JEPS42909  Mesembryanthemum nodiflorum L. M. Booth 1932-8-5 1349 Orange Coastal Santa Ana Basin Comment
  RSA18535  Mesembryanthemum nodiflorum C. B. Wolf 1927-7-23 662 Orange Along the coast just north of San Clemente. Comment
  RSA4819  Mesembryanthemum nodiflorum James Snow 1932-1 s.n. Orange Bryant Ranch: Near Long Beach. Plant # 8. Comment
  SEINET11942235  Mesembryanthemum nodiflorum J. F. Bright, Wyman, C. 1933-1 8222 Orange Comment
  RSA588774  Micropus californicus Fred M. Roberts, Carol A. Roberts, D. Bontrager 1990-4-28 4589 Orange Rancho Mission Viejo: Christianitos Canyon, 4.0 kilometers E Playa Survey Marker. 174 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
  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
  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
  UCR104615  Microseris douglasii subsp. platycarpha D. E. Bramlet 1995-4-29 2403 Orange Fairview Park, Costa Mesa. 366m north of intersection of Wilson and Canyon drive and 152 m west of the Canyon School 43 Comment
  RSA651500  Microseris douglasii subsp. platycarpha D. E. Bramlet 2000-4-12 2972 Orange Fremont Canyon. The site is 183m south of the existing access road on the north ridge of the canyon. The site is 1.37km northeast of Santiago Creek. 336 Comment
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Feb 21 2007
  UCR192480  Microseris lindleyi A. C. Sanders, Fred M. Roberts 2008-3-25 34518 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UC1294008  Mimulus E. K. Balls 1958-6-27 23729 Orange road from Silverado Canyon to Santiago Peak (3.8 mi from gate) 975 Comment
  UC1424855  Mimulus Bennett, Dunn and Dziekanowski 1976-7-21 439 Orange Pacific Island Estates condominium Laguna Hills Comment
  RSA598961  Mimulus aurantiacus Scott D. White 1997-3-28 4833 Orange Above Modjeska Canyon, proposed water tank site. 425 Comment
  UCR191245  Mimulus aurantiacus A. C. Sanders 2008-4-29 35134 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  RSA759107  Mimulus aurantiacus Robt. Allen, Reginald Durant 2008-9-28 s.n. Orange Laurel Spring, just below Harding Truck Trail. Survey Waypoint no. 85. Comment
  POM311168  Mimulus aurantiacus var. pubescens H. E. McMinn, M. Van Rensselaer 1945-6-9 1909 -ABC Orange North slope Laguna Canyon ca. 4 mi. east of Laguna Beach. Comment
  RSA647949  Mimulus aurantiacus var. pubescens Ken Greby 1985-5-17 35 Orange behind PG and E substation located 2 km. SE from Laguna Canyon Rd., on El Toro Rd., adjacent to Leisure World. Comment
  UCSB47965  Mimulus aurantiacus var. pubescens Roberts, Fred 1980-4-3 Orange San Juan Canyon; HWY 74; 0.4km NNE Lower San Juan Picnic Ground; Santa Ana Mountains 420 Comment
  UCSB48356  Mimulus aurantiacus var. pubescens Roberts, Fred 1982-4-18 Orange Santa Ana Mtns; San Juan Canyon; Hwy 74; 0.6km SW Lower San Juan Picnic Ground; 1.9km WNW Sitton Peak 420 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
  RSA648197  Mimulus brevipes Karl Price 1988-5-21 54 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
  RSA698961  Mimulus brevipes Dorothy Sammis s.n. Orange Silverado Canyon Comment
  RSA790706  Mimulus brevipes L. C. Hull 1934-4-8 15 Orange Laguna Hills. 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
  POM18132  Mimulus clevelandii P. A. Munz 1923-9-7 7768 Orange Along trail from Holy Jim Canyon to summit of Santiago Peak Comment
  RSA82101  Mimulus clevelandii F. W. Peirson 1923-5-6 3509 Orange Trabuco Canyon to Santiago Peak 915 Comment
  UC718321  Mimulus clevelandii P. C. Everett 1936-8-28 8233 Orange head Trabuco Canyon (Mian Divide Motorway); Santa Ana Mts. 1158 Comment
  UCR158807  Mimulus clevelandii A. C. Sanders, Mark A. Elvin 2005-9-2 31612 Orange Santa Ana Mtns., near head of Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks, below the towers on Santiago Peak 998 Comment
  RSA759109  Mimulus clevelandii Robt. Allen, Reginald Durant 2008-9-28 s.n. Orange Laurel Spring, just below Harding Truck Trail. Survey Waypoint no. 85. Comment
  UCR16027  Mimulus guttatus 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
  UCR174021  Mimulus guttatus A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33012 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
  CLARK-A1528-4272  Mimulus puniceus John C. Roos 1965-6-16 Orange Dana Point Comment
  POM6462  Minuartia douglasii P. A. Munz, L. T. Street, G. Williams 1919-5-3 2615 Orange Santa Ana River Canyon. Comment
  IRVC25444  Minuartia douglasii var. douglasii Fred M. Roberts 1987-5-9 3432 Orange San Juan Trail above Chiquito Basin, 2.3km SSE Los Pinos Peak, Santa Ana Mountains 952 Comment
  CAS-BOT-BC434667  Mirabilis laevis var. crassifolia P. A. Munz; R. D. Harwood 1920-4-24 3739 Orange Santa Ana Mts., Sierra Canyon 365 Comment
  POM761  Mirabilis laevis var. crassifolia I. M. Johnston 1918-5-4 266 Orange hills back of Laguna Beach. 152 Comment
  RSA3191  Mirabilis laevis var. crassifolia Carl B. Wolf 1932-3-8 2672 Orange 1/2 mile N of Corona del Mar, Newport Bay. 8 Comment
  RSA585058  Mirabilis laevis var. crassifolia D. Atwood 1993-3-27 17707 Orange Corona Del Mar State Park along Newport Coast Drive. 0 Comment
  RSA30448  Mirabilis linearis E. L. Paddock 1942-8-12 11295 Orange Stern Ranch, Yorba Linda, John Manassero Lease Comment
  UCR70867  Mirabilis linearis var. linearis E. L. Paddock 1942-8-12 11295 Orange Stern Ranch, Yorba Linda, John Manassero Lease Comment
  CHSC30534  Monanthochloe littoralis T. B. Devine 1980-4-2 626 Orange On Back Bay Dr. E. of Upper Newport Bay ca 2 mi. N. of jct. with Jamboree Rd. Comment
  CAS-BOT-BC219926  Monardella breweri subsp. lanceolata E. K. Balls 1958-6-27 23285 Orange 8 mi. se. from Silverado (Gate), Silverado Canyon, Santa Ana Mts. 1249 Comment
  UCSB52887  Monardella breweri subsp. lanceolata Roberts, Fred 1983-9-26 Orange Santa Ana Mtns., Lion Canyon, Chiquito Basin Trail, 3.3km NNE Lower San Juan Picnic Ground 4.3km SSE Los Pinos Peak 810 Comment
  RSA0005454  Monardella hypoleuca P. A. Munz 1923-9-7 7742 Orange Trail Trabuco Canyon to Santago Peak 915 Comment
  RSA0005460  Monardella hypoleuca Percy C. Everett 1935-7-11 7266 Orange Santa Ana Mountains: Main Divide Motorway, 4 miles N from Ortega Hwy in San Juan Canyon. 1098 Comment
  RSA759531  Monardella hypoleuca Robt. Allen, D. Taylor 2008-7-19 s.n. Orange Along North Main Divide Road, 0.2 road miles S of junction with Bedford Rd, 3.5 road miles N of junction with Maple Springs Road, 0.84 air miles WNW of Bald Peak. Labeled on USGS Topo map as Water Tank, near BM 3702. 1142 Comment
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Aug 13 2012
  IRVC28919  Monardella lanceolata Fred M. Roberts, Carol Roberts 1988-6-10 4092 Orange Santa Ana Mountains: Main Divide Truck Trail, Modjeska Pk., W slope, 1.1km SW of summit. Peninsular Ranges 1524 Comment
  POM257044  Monardella lanceolata var. lanceolata W. Pequegnat 1940-6-15 s.n. Orange Santa Ana Mountains: Modjeska Flat. 1372 Comment
  UCSB48199  Muhlenbergia rigens Roberts, Fred 1981-6-26 Orange Viejo Cyn., 0.4 km N Calif. Rte. 74; 2.7 km ENE San Juan Guard Station; Santa Ana Mts. 311 Comment
  POM12404  Najas guadalupensis Philip A. Munz 1922-9-2 6347 Orange Ponds in Laguna Canyon 46 Comment
  CAS-BOT-BC219360  Nama stenocarpa Le Roy Abrams 1901-6-13 1770 Orange Laguna Comment
  CAS-BOT-BC523924  Nama stenocarpa D. E. Bramlet 2002-4-14 3269 Orange Laguna Lakes 112 Comment
  RSA70  Nassella lepida J. T. Howell 1927-6-9 65 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA701600  Nassella lepida Rankin s.n. Orange Silverado Comment
  RSA732053  Nassella lepida A. C. Sanders, Fred M. Roberts 2008-3-25 34523 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  CAS-BOT-BC260105  Nassella pulchra John Thomas Howell 1927-6-9 2467 Orange N side, Santa Ana Canon [Santa Ana Canyon] 152 Comment
  RSA747596  Nassella pulchra Fred M. Roberts 2000-5-19 5329 Orange Lomas de Santiago: Loma Ridge, ridge west of Bee Peak above Bee Cyn. landfill, 0.2 km W Bee Peak. 500 Comment
  UC1155964  Nassella pulchra C. L. Hitchcock 1966-3-15 24142 Orange hills 1 1/2 mi e Brea; Stearns Lease Comment
  UCD87646  Nassella pulchra R. M. L. 1942-4-16 10 Orange 8 miles east of Santa Ana. Comment
  UCD87647  Nassella pulchra R. M. L. 1942-4-16 11 Orange 8 miles east of Santa Ana. El Toro Ranch. Comment
  UCSB48062  Nassella pulchra Fritzke, Sue; Roberts, Fred 1982-4-2 Orange Laguna Niguel; 3.5 km ESE of Aliso Peak; 3.2 km SSE of Alicia Fire Station 100 Comment
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Feb 5 2015
  IRVC29781  Nasturtium officinale Mark A. Elvin, Dean Kelch 2006-12-9 5293 Orange Newport Backbay; Big Canyon, lower end. Southern Coastal 3 Comment
  RSA0037244  Nasturtium officinale Keith E. Hoffmaster 1927-6-13 s.n. Orange Santa Ana. Comment
  RSA703641  Nasturtium officinale R. E. Riefner Jr. 2003-11-30 3 -483 Orange Peters Canyon Channel at Alton St., E of Jamboree Rd. near Irvine City Hall. 22 Comment
  UC1618099  Navarretia Donald G. Nelson 1935-7-15 296 Orange Costa Mesa, Tracy locality Costa Mesa; , Tracy locality Comment
  RSA592109  Navarretia atractyloides R. E. Riefner 1994-4-15 94 -338 Orange NE of Moulton Meadow Park, Nyes Place Road, City of Laguna Beach. Comment
  RSA468366  Navarretia prostrata Anstruther Davidson 1890-05 s.n. Orange Laguna Beach. Comment
  CAS-BOT-BC109090  Nemacaulis denudata var. denudata Le Roy Abrams 1901-6-1 1757 Orange Anaheim Landing. Comment
  UCR190983  Nemacladus ramosissimus A. C. Sanders, Fred M. Roberts 2008-4-22 34999 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, lower Hicks Canyon haul road, just above Irvine Ranch gate and road to cement plant, c. 1 mile NE of Rattlesnake Reservoir 244 Comment
  RSA421356  Nemophila menziesii Gale Sphon 1955-3-13 s.n. Orange Silverado Canyon Comment
  RSA699661  Nemophila menziesii Keith E. Hoffmaster 1927-4-8 s.n. Orange Santa Ana Mountains. Comment
  RSA3166  Nemophila menziesii Carl B. Wolf 1932-3-8 2697 Orange Santiago Dam, W. base Santa Ana Mts. 305 Comment
  RSA610229  Nemophila menziesii Fred M. Roberts, Tony Bomkamp 1997-3-19 4990 Orange Rancho Mission Viejo: Canada Gobernadora, east slope. 1.7 km SW Cliff Survey Mark, 1.7 N Calf. Route 74. 122 Comment
  CAS-BOT-BC478169  Nephrolepis cordifolia R. E. Jr. Riefner 2014-6-14 14 -171 Orange City of Newport Beach, Cliff Drive Park, along Cliff Drive, near Beacon Street 44 Comment
  IRVC152  Nephrolepis cordifolia Ed Hazen 1965-4-1 HS 537 Orange Trabuco Canyon Santa Ana Mountains Comment
  RSA0060643  Nephrolepis cordifolia Richard E. Riefner 2014-2-24 14 -64 Orange City of Dana Point, W ca. 0.1 mi from Island Way, Dana Point Harbor Dr., cliff slope immediately S of Santa Clara Ave. and Amber Lantern St. 3 Comment
  UC2041998  Nephrolepis cordifolia R. E. Riefner Jr. 2013-4-5 13 -59 Orange City of Yorba Linda, southbound 91-Freeway at 55-Freeway interchange ca. 0.6 mi W of Lakeview Ave Comment
  RSA0020229  Nicotiana attenuata J. Vlahos 1933-1 s.n. Orange Orange Co. Park. Comment
  RSA733727  Nicotiana bigelovii Betty Niedergall 1932-5-3 s.n. Orange Hills of Orange County Park Comment
  HSC21273  Nicotiana glauca C. L. Hitchcock 1966-3-15 24144 Orange Stearns Lease, 1.5 mi. E of Brea. Comment
  HSC21276  Nicotiana glauca J. W. Johnson 1961-3-29 Orange Newport Beach, at foot of cliffs, upper Newport Bay Comment
  OBI8040  Nicotiana glauca Kurt R. Neisess 1975-12-20 s.n. Orange Fullerton Hills area Comment
  RSA701605  Nicotiana glauca Minor Warne 1934-2-1 s.n. Orange Santa Ana Mountains Comment
  RSA733872  Nicotiana glauca Goldie Peale 1932-4-24 s.n. Orange Laguna Hwy. Comment
  UCD126655  Nicotiana glauca C. L. Hitchcock 1966-3-15 24144 Orange Stearns Lease, 1.5 miles east of Brea. Comment
  RSA651999  Nicotiana glauca Norman Willis 1948-2-8 s.n. Orange 2 miles E of Orange. 61 Comment
  RSA659636  Nicotiana glauca T. A. Daubert 1991-5-26 673 Orange Tucker Wildlife Sanctuary, Modjeska Canyon, fire road. Comment
  RSA5813  Nitrophila occidentalis C. B. Wolf 1932-6-28 3805 Orange Bryant Ranch: Edge of field on Bixby Ave., 300 ft. east of SW corner of NW1/4 of NE 1/4 of Sec. 33. 9 Comment
  RSA615785  Nolina cismontana James C. Dice, Oberbauer 1986-5-3 651 Orange 0.2 km west of Trabuco Canyon. 365 Comment
  RSA751322  Nolina cismontana A. C. Sanders, Fred M. Roberts, Amber O Neal 2008-5-9 35290 Orange Weir Canyon, along old dirt road c. 1.1 mi. E of Walnut Cyn Reservoir 300 Comment
  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
  JEPS11321  Nuttallanthus texanus Alice King March, 1908 Orange Anaheim Plains Comment
  UC1618040  Nuttallanthus texanus Donald G. Nelson 1935-4-14 283 Orange near Pacific Electric Railway Station, Newport Beach Comment
  UCSB47625  Nuttallanthus texanus Roberts, Fred 1980-4-3 Orange Hills, 1.0km NE Dana Hills High School; Dana Point 75 Comment
  RSA649937  Oenothera bistorta R. Soper 1971-3-19 24 Orange Upper Newport Bay. Along bayside Drive 1.3 mi. from S. jct with Jamboree Rd. el. ca. 4' 1 Comment
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Sep 15 2011
  POM200890  Oenothera californica Carl B. Wolf 1931-3-25 1935 Orange along Santa Fe R. R, 1 mile west of Atwood. 91 Comment
  RSA752094  Oenothera contorta Norland 1929-3-3 19 Orange Cypress Comment
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Jun 24 2020
  SD43505  Oenothera elata subsp. hirsutissima P. A. Munz 1947-9-10 12133 Orange Edge of garden in river bottom, Rancho Santa Ana, Santa Ana River Canyon. 121 Comment
  POM225243  Oenothera elata subsp. hirsutissima P. A. Munz 1936-6-30 14176 Orange About 6 miles south of Garden Grove. Comment
  VVC1115  Oenothera laciniata A. C. Sanders, J. Mac 1998-10-17 22268 Orange Coastal flats, Bolsa Chica, near Bolsa Bay, south of Warner Ave., E of the Pacific Coast Highway .3 Comment
  RSA783221  Oenothera micrantha J. D. Olmsted 1959-5-1 516 Orange 3/4 miles west of Oat Flat along old road from Main Divide Motorway into Sierra Canyon 777 Comment
  JEPS25886  Oligomeris linifolia L. M. Booth 1932-5-24 1097 Orange Newport Bay Comment
  RSA680344  Oncosiphon piluliferum Scott D. White, Jeff Lincer 2003-7-7 9616 Orange Former El Toro Marine Corps Air Stn. East of El Toro Marine Sch. and Irvine Blvd.; site of former dump. 140 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
  POM285338  Opuntia X occidentalis Lyman Benson 1955-10-17 15599 Orange Moulton Ranch just west of the summit east of Laguna Beach. 152 Comment
  OBI7085  Opuntia X vaseyi Pinkava & McLeod, McLeod 1971-5-9 M 446 Orange El Modeno saddle at E end of hill Comment
  HSC3800  Opuntia littoralis J. W. Johnson 1961-3-29 Orange Newport Beach, slope overlooking Upper Newport Bay. Comment
  SEINET3208448 Image available Opuntia prolifera Marc A. Baker, Bruce D. Parfitt 1987-4-12 7519 Orange Newport Beach, just W of bridge to Balboa Penninsula. Comment
  RSA6667  Opuntia vaseyi B. D. Stark 1933-1-17 4512 Orange 5 miles north of Laguna Beach on road to Irvine. 152 Comment
  RSA759532  Orobanche vallicola Robt. Allen 2006-12-13 s.n. Orange Holy Jim Canyon Trail. About 1 mile up trail from forest gate. Within 1-2 m W of the trail edge 640 Comment
  POM296926  Orthocarpus purpurascens Lyman D. Benson 1946-4-27 12052 Orange Corona Del Mar; Drainage area: Pacific Ocean. 15 Comment
  IRVC29090  Orthocarpus purpurascens var. purpurascens Fred M. Roberts 1989-3-17 4205 Orange Aliso Canyon, 3.3km SSE Moulton Pk. Aliso-Wood Canyon Regional Park 30 Comment
  CAS-BOT-BC254369  Oryza sativa Ira L. Wiggins 1965-11-6 20335 Orange Near railroad right of way, along W side of Atwood Comment
  CAS-BOT-BC355778  Osmadenia tenella John Thomas Howell 1927-7-28 2867 Orange On n. side of Santa Ana Canon [Canyon] 182 Comment
  JEPS20235  Osmadenia tenella J. Thomas Howell 1927-7-28 2867 Orange Santa Ana Canyon 182 Comment
  UCR281571  Osmadenia tenella Mitch Provance 2017-6-9 617- 85 Orange Coyote Hills, North Fullerton, East side of Gilbert St., 0.25 miles NNE of intersection with Castlewood Dr. 164 Comment
  IRVC24876  Osmadenia tenella J. Johnson 1986-6-3 Orange Lomas de Santiago, west side of Santiago Road at Anapola Rd.; growing on south-facing slope on hill. Orange Park Acres Comment
  RSA221029  Osmorhiza brachypoda E. W. Lathrop 1966-3-23 6108 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  CDA25867  Osteospermum ecklonis Mark A. Elvin, D. G. Kelch, B. S. Herhus, Patricia Iluore 2006-12-9 5326 Orange Southern Coastal; Newport Backbay; along Bayside Drive ca. 100 miles west of Eastbluff Drive. Comment
  UCR217468  Osteospermum fruticosum Mark A. Elvin 2003-2-23 2315 Orange South Coast, Irvine, San Joaquin Marsh along the berm of San Diego Creek 3 Comment
  POM311903  Paeonia californica S. Ellis 1955-3-19 230 Orange S of Carbon Canyon, Flying Cow Ranch, San Jose Hills,. 259 Comment
  CAS-BOT-BC257126  Pallenis maritima R. E. Riefner, Jr. 2011-7-1 11 -86 Orange City of Newport Beach, rocky beach between Shorecliff Rd. and Cameo Shores Rd. 3 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
  UCR240183  Pallenis maritima R. E. Riefner Jr. 2012-11-14 12- 551 Orange South Coast, city of Newport Beach, south of Poppy Street/Ocean Blvd., coastal bluff near Little Corona Beach rocky intertidal area 5 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
  UCR193839  Panicum miliaceum A. C. Sanders, Fred M. Roberts 2008-7-16 35865 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Creek wash at and above the confluence of Hangmans Tree Canyon 370 Comment
  SEINET6655641  Panicum virgatum R. E. Riefner Jr. 2006-10-8 06 -482 Orange City of Irvine, San Diego Creek near 405-Freeway.; 0 49 Comment
  RSA542447  Papaver californicum Fred M. Roberts 1988-3-9 3844 Orange Laguna Beach, Goff Ridge, along Nyes Place, 0.9km NE Goff Island. 169 Comment
  UCSB52898  Parietaria hespera Roberts, Fred; Roberts, Dar 1983-3-22 Orange Santa Ana Mtns.: San Juan Canyon, Calif. Rte. 74, south side, 4.3km by road E San Juan Guard Station; 2.3km WNW Sitton Peak 407 Comment
  CAS-BOT-BC413373  Parietaria hespera var. californica Helen D. Geis 1902-1-1 509 Orange Santa Ana Comment
  RSA542524  Parietaria hespera var. californica Fred M. Roberts Jr. 1989-3-22 4223 Orange San joanquin Hills: Temple hill, Dripping Springs Cave, lateral to Wood Canyon; 2.6 km S moulton Peak. 76 Comment
  RSA542349  Parietaria hespera var. hespera Fred M. Roberts Jr. 1987-4-21 3382 Orange Aliso Viejo: Aliso Creek, Aliso Creek bike Trail. 3.0 km ENE Moulton Peak. 73 Comment
  RSA717519  Parietaria judaica R. E. Riefner 2006-7-28 6 -325 Orange City of Huntington Beach, Huntington Central Park at Goldenwest St. 4 Comment
  RSA725537  Parthenocissus inserta Fred M. Roberts, Robert L. Allen 2007-9-28 6609 Orange Santa Ana Mtns.: Silverado Cyn., along Silverado Cyn. Rd. at eastern edge of town of Silverado. 347 Comment
  UCR44904  Paspalum dilatatum B. G. Pitzer, L. F. LaPre 1986-10-20 319 Orange City of Irvine, Drainage channel near intersection of Irvine Blvd. and Sand Canyon Avenue. 91 Comment
  UCSB57141  Paspalum dilatatum 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
  RSA784195  Paspalum distichum J. D. Olmsted 1959-9-22 980 Orange North of Santa Ana Mtns. Drainage area to Pacific Ocean: Along Santa Ana River just north of Sycamore Park and near intersection of stream from 3M clay works to the south. 137 Comment
  UC455153  Paspalum distichum I. J. Condit 1908-7-21 Orange Los Alamitos Comment
  RSA765882  Paspalum pubiflorum R. E. Riefner Jr. 2007-12-2 07 -503 Orange City of Yorba Linda, Santa Ana Canyon, N bank of Santa Ana River, E of Weir Canyon Rd., vicinity of La Palma Ave. and Mercado del Rio. 107 Comment
  RSA766071  Paspalum pubiflorum R. E. Riefner Jr. 2009-11-11 09 -237 Orange City of Mission Viejo, Oso Creek, ca. 1.4 mi N of Paseo De Colinas on Camino Capistrano. Rip-rap rocks near a waste water treatment plant. 88 Comment
  RSA766072  Paspalum pubiflorum R. E. Riefner Jr. 2009-10-10 09 -222 Orange City of Yorba Linda, Santa Ana Canyon, N bank of Santa Ana River, E of Weir Canyon Rd., vicinity of La Palma Ave. and Mercado del Rio. 107 Comment
  RSA0050323  Paspalum vaginatum R. E. Riefner Jr. 2012-10-21 12 -523 Orange City of Newport Beach, south of Poppy Street/Ocean Blvd, creek at base of stairs, Little Corona Beach. 7 Comment
  RSA0089484  Paspalum vaginatum D. E. Bramlet 2009-11-27 4429 Orange South Coast: San Diego Creek between Irvine and Newport Back Bay. 4 Comment
  RSA766061  Paspalum vaginatum R. E. Riefner Jr. 2008-7-29 08 -257 Orange City of Dana Point, near Ritz-Carlton Hotel, Salt Creek Beach area. 0 Comment
  RSA766062  Paspalum vaginatum R. E. Riefner Jr. 2008-7-29 08 -256 Orange City of Dana Point, near Ritz-Carlton Hotel, Salt Creek Beach area. 1 Comment
  SD218260  Paspalum vaginatum R. E. Riefner Jr., K. Campbell 2008-8-31 08 267 Orange City of Irvine, tidal portion of San Diego Creek, immediately easst of Highway 73 overpass. 0 Comment
  UCR204164  Paspalum vaginatum R. E. Riefner Jr. 2005-7-9 05- 543 Orange South Coast, city of Mission Viejo, Oso Creek, c. 0.5 mi north of Paseo de Colinas on Camino Capistrano 86 Comment
  JEPS20118  Pectocarya linearis subsp. ferocula C. B. Wolf 1931-3-6 1846 Orange 1/2 mi above Trabaco Oaks (w slope of mts.); Santa Ana Mountains, Trabaco Canyon 457 Comment
  UCSB56507  Pectocarya linearis subsp. ferocula Marsh, G. 1978-3-17 Orange U.C. Irvine Ecological Preserve: in swale, near hilltop of Hill #3 85 Comment
  RSA649  Pectocarya penicillata J. T. Howell 1928-2-26 861 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA787503  Pedicularis densiflora Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49711 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  RSA548878  Pedicularis densiflora Bernard Jaroslow 1990-4-25 B- 36 Orange Sitton Peak Truck Trail: Trailhead 0.3 mile W of ranger station near hot springs, on Ortega Highway (SR 74) Comment
  RSA698932  Pedicularis densiflora Unspecified 1935-02 s.n. Orange Ortega highway near San Juan Springs. Comment
  CDA32097  Pelargonium Mark A. Elvin 2005-5-14 4313 Orange Southern Coastal; UCI Arboretum Comment
  SD174884  Pelargonium Mark A. Elvin 2005-5-14 4313 Orange Southern Coastal: UCI Arboretum, growing wild in the Arboretum grounds, not cultivated. 14 Comment
  UCR188941  Pelargonium X domesticum Robert DeRuff 2004-1 547 A Orange Newport Beach, Upper Newport Bay, Eastbluff North area 25 Comment
  UC185251  Pellaea andromedifolia Mrs. Carlotta C. Hall 1913-5-27 9407 Orange Santiago Canyon Comment
  RSA0093405  Pennisetum clandestinum D. E. Bramlet 2009-11-20 4416 Orange South Coast: San Diego Creek between Irvine and Newport Back Bay. 4 Comment
  CDA20319  Pennisetum villosum R. Tiffer 2004-11-9 PDR 1367133 Orange Anaheim. 1750 S. Douglass Road. Lawn weed. 0 Comment
  VVC489  Penstemon cordifolius P. J. MacKay 1990-5-25 s.n. Orange Peninsular Range, Hwy 74 near San Juan Hot Springs 198 Comment
  RSA790701  Penstemon cordifolius R. H. McArthur 1934-5-19 2 Orange PR8. Trobuca Canyon. Comment
  SEINET10334604  Penstemon heterophyllus subsp. australis Czarnecki 1966-5-25 113 Orange Old botanical gardens at the Ranco Santa Ana Comment
  UCR79244  Penstemon heterophyllus subsp. australis Steve Boyd, T. S. Ross 1992-5-20 7472 Orange Southern Santa Ana Mtns, 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 buildings) 457 Comment
  RSA7395  Penstemon heterophyllus var. australis Carl B. Wolf 1933-8-24 1914 Orange From Modfeska peak to Santiago peak. Common upper sonoran. 1524 Comment
  UC1608268  Penstemon heterophyllus var. australis Steve Boyd and Tim Ross 1992-5-20 7472 Orange western edge of the wilderness in Lucas Canyon (San Mateo Canyon Wilderness, along foot trail upstream from end of old roadgrade to upper homestead (corrugated steel bldg)); Southern Santa Ana Mountains, San Mateo Canyon Wilderness Ar 350 Comment
  UCR241073  Penstemon spectabilis Dick Newell, Don Millar 2013-4-16 325 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago; lower Hangman's Tree Canyon at Santiago Canyon wash, 300 ft. west of Santiago Canyon Rd. 361 Comment
  NY661153  Penstemon spectabilis var. spectabilis F. R. Fosberg 1931-6-21 S 5085 Orange Lower Santiago Canyon Comment
  NY661157  Penstemon spectabilis var. spectabilis C. Davidson 1977-5-18 5604 Orange Santa Ana Mountains, Cleveland National Forest. Pleasants Peak (on Orange-Riverside Co. line) 1219.2 Comment
  RSA761798  Penstemon spectabilis var. spectabilis Robert Allen 2003-6-22 12298 Orange Along North Main Divide Road, 7.5 road miles north of Falcon Group Campground, circa 1.35 air miles west of Trabuco Peak. 1205 Comment
  POM156456  Pentachaeta aurea L. R. Abrams 1903-4-17 3259 Orange Near El Toro Comment
  POM184311  Perideridia gairdneri subsp. gairdneri L. M. Booth 1932-8-5 1354 Orange Lomita Land Co. Comment
  SD145971  Peritoma arborea var. globosa R. D. Goeden, D. W. Ricker 1965-6-21 Orange Dana Point 60 Comment
  SEINET235756  Persea borbonia R. W. Scora 1996-9-2 5087 Orange CULTIVATED ; University of California south Coast Field Station near Irvine. Field 3 Row 42 tree 9. Comment
  SBBG61477  Persicaria amphibia J. Ewan 1931-7-31 Orange Westfall near Huntington Beach Comment
  SD231420  Persicaria hydropiperoides Scott D. White, Matt Carlton 2003-11-20 9868 Orange Santa Ana Mountain foothills: San Juan Creek in San Juan Capistrano. 24 Comment
  UC537279  Petunia parviflora L. M. Booth 1932-12-16 1378 Orange near coast Santa Ana River Comment
  RSA13072  Phacelia brachyloba Percy C. Everett 1935-7-11 7267 Orange Santa Ana Mts, Main Divide Motorway, 1.7miles N of Jct with Trabuco Can road. 1220 Comment
  SBBG6171  Phacelia cicutaria var. hispida J. M. Tucker 1941-5-30 257 Orange Ortega Hwy (St Hwy 74), 2 to 3 mi E of W boundary of Cleveland Nat Forest Comment
  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
  RSA741474  Phacelia cicutaria var. hubbyi R. E. Riefner Jr. 2008-5-13 8 -76 Orange Near City of Orange, W side of Hicks Haul Rd, Irvine Ranch Reserve, Management Area 11.. Comment
  SEINET4682011  Phacelia cryptantha W. Halvorson 1969-8-22 350 Orange 8 miles east of El Toro, California.; 0 61 Comment
  RSA798544  Phacelia davidsonii Robert F. Thorne, E. W. Lathrop 1977-5-18 49745 Orange Santa Ana Mountains: summit of Santiago Peak. 1733 Comment
  RSA697781  Phacelia distans Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts. PR8. 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
  RSA699654  Phacelia hispida Keith E. Hoffmaster 1934-4-22 s.n. Orange Santa Ana Mountains Comment
  RSA738985  Phacelia hispida Minor Warne 1934-4-28 s.n. Orange Ladd Canyon-Santa Ana Mts. PR8. Comment
  RSA20370  Phacelia minor Percy C. Everett 1938-4-11 9399 Orange Rancho Santa Ana, Santa Ana Canyon, north of Pear Orchard. 122 Comment
  RSA2112  Phacelia minor Carl B. Wolf 1931-3-6 1830 Orange Trabuco Canyon Road, 1.25 miles below Trabuco Oaks. 305 Comment
  RSA603111  Phacelia minor R. S. Woglum 1932-4-16 s.n. Orange Trabuco Canyon, Santa Ana Mountains. Cleveland National Forest. Comment
  UCR191343  Phacelia parryi A. C. Sanders, Linda Farley, Fred M. Roberts, D. E. Bramlet 2008-4-1 34620 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
  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
  UCR239645  Phacelia ramosissima Fred M. Roberts 2012-5-9 7554 Orange Santa Ana Mountains, Lake Forest, along Serrano Creek hiking trail, 0.7 m south-southwest of intersection of Commercentre and Dimension Drives 152 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
  RSA759151  Phacelia suaveolens subsp. keckii Robt. Allen, Lori Whalen 2008-7-5 s.n. Orange Along Harding Canyon Truck Trail, on the ridgeline south of upper Harding Canyon. 1.55 air miles SW of Maple Springs Saddle - Harding Canyon USFS gate, 0.71 air miles due W of BM 5015 on Main Divide Road, W arm of Modjeska Peak., Survey point no. 38 1298 Comment
  SD119372  Phacelia suffrutescens Reid Moran 1977-6-13 24234 Orange Willow Canyon, tributary of Laguna Canyon, on shaded north slope. 124 Comment
  UCR160531  Phalaris canariensis Robert DeRuff 1992-5-29 427 Orange South Coast, Newport Back Bay, just below the bluff top in the Castaways area 15 Comment
  IRVC1780  Phalaris minor J. B. Anderson 1966-4-18 597 Orange Irvine; MacArthur Blvd. near Red Hill Road. Southern Coastal Comment
  IRVC21636  Phalaris minor R. L. Allen, Fred M. Roberts 1982-7-4 s.n. Orange Carbon Canyon, Carbon Canyon Rd., 0.6km by road SW county line; 2.3km NW Gilman Peak, Chino Hills 250 Comment
  JEPS111464  Phalaris minor J. B. Anderson 1966-4-22 603 Orange San Joaquin Hills: Along dirt road in Los Trancos Canyon Comment
  SEINET4182708 Image available Phalaris minor A. A. Beetle 1942-4-19 3091 Orange 20 Miles South of Santa Ana, road to Laguna Comment
  POM263105  Phalaris minor J. C. Roos 1937-5-10 431 Orange Tustin Comment
  IRVC1783  Phalaris paradoxa J. B. Anderson 1966-4-26 620 Orange UC, Irvine Campus; S of Science Lecture Hall. Southern Coastal Comment
  UCR66995  Phoenix canariensis A. C. Sanders 1990-10-6 10197 Orange Newport Bay, North Star County Beach Area on the SW end of the Bay, c. 2 km inland of Hwy 1. 3 Comment
  POM3742  Pholistoma auritum D. L. Crawford 1916-07 s.n. Orange Laguna Beach region. Comment
  CAS-BOT-BC222603  Pholistoma auritum var. auritum F. W. Peirson 1923-3-25 4481 Orange Aliso Creek, at sea level Comment
  UCD120623  Pholistoma auritum var. auritum Ronni Stachelek; Bob Anderson, Frances Schropshire 1995-3-1 38 Orange Newport Beach, W side Upper Newport Bay on Back Bay Dr. ca 1/2 mi. N of Shellmaker Island. Comment
  UCR261684  Pholistoma auritum var. auritum Dick Newell, Don Millar 2015-3-24 392 Orange South Coast, San Joaquin Hills, on Willow Canyon Trail 0.2 mi. west of Laguna Coast Wilderness Park entrance off Laguna Canyon Rd. 88 Comment
  UCR234153  Phoradendron macrophyllum Dick Newell 2011-12-27 222 Orange Peninsular Range; Santa Ana Mtns. Region, Lomas de Santiago, along Limestone Canyon Rd. at junction to Dripping Springs Trail 311 Comment
  RSA0061169  Phyla nodiflora Robt. Allen, Trish Smith, Mike Kahle 2006-10-27 s.n. Orange Santa Ana Mountains region: Foothills along Santiago Creek, north side of Irvine Regional Park. 174 Comment
  CAS-BOT-BC452026  Phyllospadix torreyi S. B. Parish; W. F. Parish 1882-10-1 1609 Orange Near Port Bay Comment
  RSA384023  Phyllospadix torreyi Anstruther Davidson 1910-6-28 2493 Orange Balboa Beach. Comment
  RSA684000  Phyllospadix torreyi N. C. Cooper 1942-11-8 2019 Orange Laguna Beach. Comment
  RSA684065  Phyllospadix torreyi E. Yale Dawson 1958-1-5 18117 Orange E side of Crystal Cove. Station no 42. 140-150 ft from shore base point. Comment
  CAS-BOT-BC452025  Phyllospadix torreyi I. M. Johnston 1915-9-3 s.n. Orange Laguna Beach Comment
  UC570695  Physalis crassifolia Herbert L. Mason 1926-4-25 2933 Orange 5 mi s of Laguna Comment
  RSA691  Physalis philadelphica J. T. Howell 1927-7-28 513 Orange West side, Rancho Santa Ana. 152 Comment
  RSA759536  Pickeringia montana var. tomentosa Robert Allen, Nancy Heuler 2007-5-19 s.n. Orange San Juan Trail, circa 3.1 air miles below (SW of) trailhead at southern edge of Blue Jay Campground, circa 1.6 air miles above (NE of) trailhead at Hot Springs Canyon. 782 Comment
  IRVC21696  Picris echioides Fred M. Roberts 1984-8-6 1367 Orange UC Irvine, along Adobe Circle Road, 0.9km ENE campus center; 2.3km W French Hill, Irvine 30 Comment
  POM202174  Picris echioides L. M. Booth 1932-6-7 1168 Orange Newport Lagoon. Comment
  UCR46555  Picris echioides B. G. Pitzer, D. C. Hawks 1986-10-21 0353 A 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
  RSA929  Picris echioides J. T. Howell 1927-7-29 514 Orange Near east boundary of Rancho Santa Ana. 152 Comment
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Nov 18 2009
  RSA799946  Pilularia americana Justin M. Wood 2011-4-12 3658 Orange South Coast: City of Costa Mesa. Fairview Park, just WNW of Marison Special Education Center. 24 Comment
  UC1543146  Pilularia americana Donald G. Nelson 1935-4-15 301 Orange near Costa Mesa (on rd from Garden Grove to Costa Mesa, <rd.> converging toward main hwy. from Santa Ana) Comment
  RSA562823  Pinus Steve Boyd, T. S. Ross 1992-5-20 7467 A 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
  CAS-BOT-BC402195  Pinus attenuata R. F. Thorne; C. W. Tilforth; E. W. Lathrop 1977-4-27 49694 Orange Northern Santa Ana Mountains: Sierra Peak. Comment
  IRVC20775  Pinus coulteri Fred M. Roberts 1980-5-3 68 Orange Main Divide Truck Trail, 0.6km SE Trabuco Peak, Santa Ana Mountains 1259 Comment
  RSA129457  Pinus coulteri H. E. Norton 1931-3-20 44 Orange Corona. T4S R7W [Corona Quadrangle map]. Plot #30, Corona #2. Comment
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Jul 14 2014
  RSA662562  Pinus coulteri P. Shirokawa 1998-5-7 26 Orange Cleveland National Forest- Trabuco Ranger District, 4.55 miles from Ortega Highway (State Highway 74) on North Main Divide Road 1067 Comment
  RSA7645  Pinus coulteri C. B. Wolf 1933-12-24 5386 Orange Approximately the head of Highway Canyon on slope of Modjeska Peak, on the road to the Santa Ana Mts. Altitude 4000 ft 1220 Comment
  UCR194192  Pinus coulteri A. C. Sanders 2008-7-3 35715 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Santiago Canyon near mouth of Limestone Cyn., at Agustine Staging Area 260 Comment
  RSA376207  Piperia cooperi E. W. Lathrop 1986-5-18 7856 Orange 200 meters south of the Cleveland National Forest, Trabuco district boundary, along road between the USFS Tenaja Guard station and Cottonwood Creek. Comment
  UCR131522  Piperia elongata Robt. L. Allen, Christopher M. Barnhill 2004-1-10 12266 Orange Santa Ana Mtns., Trabuco Trail, c. 0.7 trail miles (1127 m) NW of Los Pinos Saddle, middle of top half of first switchback 1179 Comment
  RSA725540  Piptatherum miliaceum Fred M. Roberts, Robert L. Allen 2007-9-28 6606 Orange Santa Ana Mtns.: Silverado Cyn., along Silverado Cyn. Rd. at eastern edge of town of Silverado. 347 Comment
  RSA184119  Piptatherum miliaceum I. L. Wiggins 1965-10-24 20291 Orange At corner of Yorba Linda and State College Blvds., Fullerton Comment
  UCR99861  Pityrogramma triangularis Scott D. White 1996-12-20 4630 Orange Santa Ana Mountains, above Modjeska Canyon; proposed water tank site 488 Comment
  RSA450854  Plagiobothrys acanthocarpus Gordon Marsh 1978-10-16 s.n. Orange UC Irvine Ecological Preserve, near eastern fence line, draingae separating hills #1, #2. Comment
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Oct 7 2017
  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
  UCR223980  Plagiobothrys collinus Dick Newell, Don Millar 2011-2-1 095 Orange South Coast, Shady Canyon, SSE of Irvine, 0.1 mile east of the easterly end of Canyon Creek Rd. 175 Comment
  POM155843  Plagiobothrys collinus var. californicus L. R. Abrams 1903-4-15 3315 a Orange Buena Park. Comment
  RSA450857  Plagiobothrys collinus var. californicus Gordon Marsh 1978-3-17 s.n. Orange UC Irvine Ecological Preserve. 98 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
  UCSB56509  Plagiobothrys collinus var. gracilis Marsh, G. 1978-3-17 Orange U.C. Irvine Ecological Preserve: in swale near hilltop of Hill #3 85 Comment
  UCR191013  Plagiobothrys nothofulvus A. C. Sanders, Fred M. Roberts 2008-4-22 35030 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 396 Comment
  SD181425  Plantago coronopus Valerie Soza, Kevin Clark, LeRoy Gross, Will Miller, 2001-4-4 1121 a Orange Anaheim Bay: Seal Beach U.S. Naval Weapons Station, southwestern edge of Seal Beach National Wildlife Refuge. 3 Comment
  SEINET8394534  Plantago elongata Unknown 1937-4-24 3936 Orange Dana Point. Comment
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Oct 21 2019
  UCR152764  Plantago elongata subsp. elongata D. E. Bramlet 2004-3-26 3540 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
  HSC16827  Plantago erecta J. W. Johnson 1961-2-19 Orange Newport Beach, above upper Newport Bay Comment
  UC1618039  Plantago erecta Donald G. Nelson 1935-4-14 282 Orange Near Pacific Electric Railway Station. Newport Beach Comment
  UCR192214  Plantago erecta A. C. Sanders, Fred M. Roberts 2008-5-6 35253 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
  RSA789581  Plantago erecta subsp. erecta Robert F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49653 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak] Comment
  HSC16872  Plantago indica Unknown Jun 1961 Orange Vacant lot in Balboa Comment
  JEPS7123  Plantago lanceolata Lawrence M. Booth 1932-7-18 1266 Orange Costa Mesa Comment
  RSA730990  Plantago lanceolata Fred M. Roberts 2006-11-15 6464 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
  RSA603370  Plantago major Scott D. White, B. Leatherman 1997-6-12 5334 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
  RSA763  Plantago ovata var. fastigiata J. T. Howell 1927-6-9 70 Orange Botany Garden, Rancho Santa Ana. [original location] 152 Comment
  RSA68988  Plantago ovata var. insularis F. W. Peirson 1924-5-31 4668 Orange 5 miles southeast of Laguna Beach. Comment
  POM128994  Plantago rhodosperma Anstruther Davidson 1908-5-1 1791 Orange Corona del Mar Comment
  SD241125  Plantago subnuda A. C. Sanders 2011-8-20 39889 Orange South Coast: city of Placentia, Tri-City Park on North Kraemer Blvd. at Golden Ave. (Yorba Linda 7.5'Q) 103 Comment
  UCR235457  Plantago subnuda A. C. Sanders 2011-8-20 39889 Orange South Coast, city of Placentia, Tri-City Park on North Kraemer Blvd. at Golden Ave. 104 Comment
  RSA688865  Plantago virginica Fred M. Roberts, D. E. Bramlet 2003-4-10 5654 Orange Rancho Mission Viejo: Donna O'Neill Land conservancy, ridges west of Christianitos Cyn., 1.41km SW Gato Gate and 1.19km W Christianitos Rd. Along south-running ridge on old dirt road. 184 Comment
  CAS-BOT-BC175661  Platanus racemosa A. C. Sanders; Fred M. Roberts 2008-7-3 35700 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, along Windy Ridge Rd. at wash crossing, 0.95 mi. SE of Walnut Canyon Reservoir 242 Comment
  RSA401708B  Platanus racemosa Albert J. Perkins 1915-04 s.n. Orange Santa Ana, Orange County Park. Comment
  UCR195018  Platanus racemosa A. C. Sanders, Fred M. Roberts 2008-8-7 35977 Orange Peninsular Range; Santa Ana Mtns., lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate 192 Comment
  RSA0056334  Platanus racemosa Jim Shevock 1970-4-25 154 Orange Highway 74. 309 Comment
  RSA722432  Platystemon californicus Frances Battey s.n. Orange Laguna Hills. Comment
  UCSB12591  Platystemon californicus Breedlove, Dennis 1962-3-9 Orange 4.4 miles east of San Juan Capistrano; on State 74 112 Comment
  RSA722431  Platystemon californicus J. R. Bruff 1927-3-15 2 -S Orange 1 mi. N.E. Country Club. Comment
  CAS-BOT-BC412806  Plecostachys serpyllifolia R. E. Riefner, Jr. 2014-9-27 14 -355 Orange City of Laguna Beach, NE side of Pacific Coast Highway ca. 0.25 mi SE of Aliso Creek, general vicinity of Aliso Beach County Park 13 Comment
  RSA766066  Plecostachys serpyllifolia R. E. Riefner Jr. 2009-7-18 09 -151 Orange City of Dana Point, beach near Salt Creek, vicinity of Ritz Carlton Resort. 2 Comment
  RSA48860  Pluchea odorata J. C. Roos 1949-10-1 4684 Orange Doheney Beach. 3 Comment
  RSA472110  Pluchea odorata Albert J. Perkins 1912-8-22 s.n. Orange Aliso Canyon, near Thursteria Ranch Comment
  IRVC1787  Poa annua J. B. Anderson 1966-4-25 619 Orange Santa Ana: 20021 Birch Street. Southern Coastal Comment
  IRVC1789  Poa annua I. L. Wiggins 1966-2-1 20405 Orange California State College, Fullerton; orange grove just E of Letters and Science Building. Southern Coastal Comment
  RSA734637  Poa annua A. C. Sanders, T. B. Salvato 2008-5-13 35357 Orange Lomas de Santiago, Santiago Canyon above (S of) mouth of Hangman Tree Canyon, just below Modjeska Canyon confluence 366 Comment
  PASA1247  Poa howellii Frank W. Peirson 1923-5-6 Orange ""Holy Jim"" trail to Santiago Peak 990 Comment
  RSA731973  Poa secunda A. C. Sanders, Fred M. Roberts 2008-4-8 34764 Orange Peninsular Range; Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Loma Ridge Spur Rd., above Dripping Springs Loop Rd 457 Comment
  RSA629045  Poa secunda subsp. secunda Valerie L. Soza, LeRoy Gross 1999-6-10 527 Orange Santa Ana Mountains: Southwestern extension of Modjeska Peak, off dirt road to summit, off Main Divide Road. 1554 Comment
  RSA636103  Poa secunda subsp. secunda Valerie L. Soza, LeRoy Gross 1999-6-7 489 Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  IRVC21793  Polycarpon tetraphyllum B. S. Woolfolk 1985-5-12 1 Orange 325 Vista Baya Circle, Costa Mesa 23 Comment
  UCSB48054  Polycarpon tetraphyllum Fritzke, S.; Roberts, Fred 1982-4-3 Orange Dana Point Headlands: north of Dana Strand Road; 0.5 km. W Dana Point Harbor; 0.8 km. SSW Richard Henry Dana School 80 Comment
  UCR158809  Polygala cornuta subsp. fishiae A. C. Sanders, Mark A. Elvin 2005-9-2 31611 Orange Santa Ana Mtns., upper Holy Jim Canyon, a major tributary of Trabuco Canyon, along the trail in the switchbacks 970 Comment
  UCR231203  Polygala cornuta subsp. fishiae A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39941 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1143 Comment
  RSA0061171  Polygala cornuta subsp. fishiae Robt. Allen, Richard S. Newell, Len Gardner 2006-7-2 s.n. Orange San Joaquin Hills, Laguna Coast Wilderness Park, Laurel Canyon, near trail. 106 Comment
  RSA425  Polygala cornuta var. fishiae J. T. Howell 1927-7-3 258 Orange Claymine Canyon near Sierra Peak. 305 Comment
  RSA588890  Polygala cornuta var. fishiae Fred M. Roberts 1990-6-4 4664 Orange Santa Ana Mountains: Hall Canyon, 1.8 km NNW Mustang Spring at east edge of Flying B Ranch. 421 Comment
  SD245439  Polygala cornuta var. fishiae Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49615 Orange Santa Ana Mountains: along Ortega Highway (74) about 2.5 miles above San Juan Fire Station, lateral ravine tributary to San Juan Canyon. Comment
  RSA749041  Polygonum aviculare A. C. Sanders, Fred M. Roberts 2008-8-7 35972 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  RSA0051242  Polygonum aviculare Keith E. Hoffmaster 1934-1 491 Orange Santa Ana. Comment
  JEPS51305  Polygonum aviculare subsp. aviculare Lawrence M. Booth 1932-7-4 1254 Orange Newport Bay Comment
  POM2364  Polygonum aviculare subsp. aviculare D. L. Crawford 1916-7-26 s.n. Orange Aliso Canyon. Comment
  RSA666101  Polygonum aviculare subsp. aviculare Fred M. Roberts, Michelle Lee 2001-6-4 5485 Orange Rancho Mission Viejo: Chiquita Ridge, 0.3km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. (Canada Gobernadora. 226 Comment
  CAS-BOT-BC414042  Polygonum aviculare subsp. aviculare Ira L. Wiggins 1965-11-7 20364 Orange Vacant lot on west side of State College Boulevard near Troy High School, Fullerton Comment
  RSA6067  Polygonum hydropiperoides Carl B. Wolf 1932-6-13 3719 Orange Storm drain at Malvern and Nicholas Aves; Fullerton. 53 Comment
  UC729963  Polygonum hydropiperoides Carl B. Wolf 1932-6-13 3719 Orange Fullerton; Malvern and Nicholas Avenues 53 Comment
  RSA21  Polypodium californicum J. T. Howell 1928-2-7 810 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  RSA773504  Polypodium californicum Fred M. Roberts 1999-5-14 5224 Orange Lomas de Santiago: Loma Ridge, Upper Limestone Canyon, 0.7 km NW Bolero Spring and 2.6 km SW Silverado School 490 Comment
  SD48446  Polypodium californicum E. K. Balls, P. C. Everett 1957-11-25 22837 Orange Trabuco Canyon Comment
  UCR209348  Polypodium californicum Fred M. Roberts 2008-4-14 6890 Orange Santa Ana Mountains, Upper Weir Canyon, east fork, 3.4 km eat of Robbers Peak, Irvine Ranch Conservancy 433 Comment
  IRVC19535  Polypodium californicum R. L. Allen 1977-2-13 s.n. Orange Viejo Canyon, off Hwy 74, 15.5mi NE San Juan Capistrano; steep, rocky seep above San Juan Creek. Santa Ana Mountains Comment
  IRVC21306  Polypodium californicum Fred M. Roberts 1984-1-29 1160 Orange Laguna Niguel: Niguel Hill, 1.1km ENE of Aliso Peak, 2.0km SW of Alicia Fire Station. Southern Coastal 260 Comment
  RSA698542  Polypodium californicum L. Griset 1929-2-10 s.n. Orange Top of Modena Grade. Comment
  UCSB48374  Polypogon interruptus Roberts, Fred 1982-5-22 Orange Dana Point; jct. of Stone Hill Dr. & Selva Rd., 1.0 km. ESE Dana Hills High School; 1.7 km. SW Marco Forster Junior High School 40 Comment
  IRVC14815  Polypogon monspeliensis A. S. Boughey 1968-7-9 399 Orange Upper Santiago Canyon. Santa Ana Mountains Comment
  SEINET192612 Image available Polypogon monspeliensis C. B. Wolf 1932-6-13 13 Orange Fullerton; Malvern and Nicholas Avenues. 0 Comment
  UCR102003  Polypogon monspeliensis B. G. Pitzer 1997-3-25 3037 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, on bluffs immediately above beach, along trail that winds around restoration area and down to beach. 30 Comment
  UCR174022  Polypogon monspeliensis A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33055 Orange Peninsular Range; Santa Ana Mtns., San Juan Canyon, from Lower San Juan Picnic Area to c. 1 mile downstream, parallel to Hwy 74 and near Riverside Co. line 396 Comment
  UCSB48109  Polypogon monspeliensis Roberts, Fred 1981-4-12 Orange Santa Ana Mtns.: San Juan Canyon, Hwy. 74, 1.3 km. by road E San Juan Guard Sta., 0.9 km. SE Juan Rancho Survey Marker 295 Comment
  POM1140  Polypogon viridis Le Roy Abrams 1901-06 1805 Orange Santiago Peak trail. Comment
  POM202525  Polypogon viridis L. M. Booth 1932-6-7 1163 Orange Newport Lagoon. 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
  RSA679095  Polystichum imbricans subsp. curtum Fred M. Roberts 2003-6-25 5950 Orange Santiago peak, north slopes along ridge east of Main Divide truck trail, 0.6km NNW summit. 1605 Comment
  RSA735118  Populus balsamifera subsp. trichocarpa R. E. Riefner 2008-6-22 8 -210 Orange City of Yorba Linda, Santa Ana Canyon, Santa Ana River, La Palma Ave. near Old Village Rd. 111 Comment
  RSA731918  Populus fremontii subsp. fremontii Fred M. Roberts, Sandra Leatherman 2007-11-27 6661 Orange Anaheim: Santa Ana River, Santa Ana Canyon, just west of Horseshoe Bend on S side of E La Palma Ave., about 0.3km E Weir Cyn. Rd. bridge. 100 Comment
  RSA599636  Populus trichocarpa Fred M. Roberts Jr., P. Barrett, Gina Schultz 1995-7-25 4965 Orange San Juan Capistrano: San Juan Creek, 0.1 km SW La Novia Street bridge. 27 Comment
  RSA603349  Populus trichocarpa Scott D. White, B. Leatherman 1997-6-12 5327 Orange East of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi. E of I-15 / Hwy 74 jtn. 46 Comment
  RSA722930  Populus trichocarpa R. E. Riefner Jr. 2007-6-12 7 -253 Orange City of San Juan Capistrano. Vicinity of Calle Arroyo/ Paseo Esteban at San Juan Creek. 35 Comment
  UCR26999  Porophyllum gracile E. W. Lathrop 1966-4-18 6188 Orange Santa Ana Mtns., 4 mi NE of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District Comment
  UCR98272  Porophyllum gracile Scott D. White 1997-3-28 4841 Orange Santa Ana Mountains, Above Modjeska Canyon, proposed water tank site. 488 Comment
  RSA934  Porophyllum gracile J. T. Howell 1927-7-28 509 Orange Nolina Canyon, Rancho Santa Ana 152 Comment
  CAS-BOT-BC452122  Potamogeton crispus John Thomas Howell 1928-9-6 4079 A Orange Santa Ana River bottom, Santa Ana Canon [Canyon] 152 Comment
  CAS-BOT-BC453826  Potamogeton nodosus Street; Williams 1919-5-4 2689 Orange Laguna Lakes Comment
  POM6395  Potamogeton nodosus L. T. Street, Williams 1919-5-4 2689 Orange Laguna Lakes. [now Big Laguna Lake, San Diego Co.] Comment
  RSA780828  Potentilla glandulosa subsp. glandulosa Sandy Leatherman 2011-5-16 2011 -15 Orange Peninsular Ranges; Chino-Puente Hills region: 50 meters west of Carbon Canyon Road and Lions Canyon Road in Carbon Canyon in the City of Brea. 273 Comment
  RSA39350  Prosopis velutina E. L. Paddock 1943-6-8 12731 Orange Santa Fe Railway, south side of tracks 1/4 mile east of Yorba Cemetery with other plants at scattered intervals between atwood and Rancho Santa Ana. 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
  UCR281572  Pseudognaphalium biolettii Mitch Provance, Jeremiah George 2017-3-20 317- 106 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
  UCR239639  Pseudognaphalium californicum Fred M. Roberts 2012-4-24 7506 Orange San Joaquin Hills, Buck Gully, west of intersection of Ridge Park Road and Newport Coast Drive, 1.5 km west of Signal Peak 179 Comment
  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
  RSA722094  Pseudognaphalium leucocephalum R. E. Riefner 2007-2-13 07 -55 Orange City of San Juan Capistrano, vicinity of La Novia Ave. and San Juan Creek. 31 Comment
  UCR194995  Pseudognaphalium luteoalbum A. C. Sanders, Fred M. Roberts 2008-8-7 36002 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon at powerline crossing, 1.0 mi. (air) SSE of Walnut Canyon Reservoir 226 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
  UC537030  Pseudognaphalium stramineum Lawrence M. Booth 1932-7-19 1275 Orange Bolsas Marsh Comment
  UC537037  Pseudognaphalium stramineum Lawrence M. Booth 1932-12-13 1374 Orange near Harbor Island; Newport Bay Comment
  CAS-BOT-BC357570  Pseudognaphalium stramineum Ira L. Wiggins 1966-3-18 20533 Orange Experimental Garden behind greenhouse, California State College at Fullerton Comment
  IRVC15160  Pseudosasa japonica D. Van Gorden 1965-5-9 Orange Silverado Canyon. Santa Ana Mountains Comment
  UCR158852  Psoralea macrostachya A. C. Sanders, Mark A. Elvin 2005-9-2 31605 Orange Peninsular Range; Santa Ana Mtns., mouth of Lion Canyon near Lower San Juan Picnic Area, San Juan Creek Canyon 427 Comment
  UCR174183  Psoralea orbicularis A. C. Sanders, Fred M. Roberts, Michelle Balk 2006-7-20 33037 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
  IRVC29828  Pulicaria paludosa Tom McCrainie, Mark A. Elvin 2006-9-23 2 Orange San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; SW edge, along San Diego Creek, N of University Drive, E Hwy 73. Southern Coastal 2 Comment
  RSA616052  Pulicaria paludosa Scott D. White, Peter Bowler 1997-11-20 6021 Orange University of California Irvine Campus: East of main campus. 46 Comment
  SD218292  Pulicaria paludosa Mark A. Elvin 2003-8-24 3013 Orange Southern coastal: San Joaquin Hills, Irvine, UCI, 100 m north of the intersection of Shady Canyon Drive and Bonita Canyon Road. 71 Comment
  UCR138405  Pulicaria paludosa Scott D. White, Brian Leatherman 1997-6-12 5321 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
  UCR18433  Pulicaria paludosa O. F. Clarke 1975-7-27 s.n. Orange San Joaquin Marsh near U.C. Irvine Comment
  UCR210376  Pulicaria paludosa T. B. Salvato, Billy Deane 2006-10-16 1932 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  UCR211082  Pulicaria paludosa Joseph Cahill 2009-8-21 3172 B Orange South Coast, Bolsa Chica Ecological Reserve 1 Comment
  SD136812  Pycnanthemum californicum Steve Boyd, Tim Ross 1994-9-14 8351 Orange Southern Santa Ana Mts., San Mateo Canyon Wilderness Area of the Cleveland Nat Forest, Lucas Canyon Trail at stream crossing Lucas Canyon 310 Comment
  UCD47720  Quercus X acutidens James Trumbley 1980-1 s.n. Orange Crystal Cove State Park, ca. 1 mile inland, in Moro Canyon, a coastal canyon between Laguna Beach and Corona del Mar, Orange County, California. 30 Comment
  HSC8091  Quercus agrifolia S. M. Clapp 1966-4-8 47 Orange Modjeska Canyon 152 Comment
  IRVC1323  Quercus agrifolia Gail Howard 1965-5-2 s.n. Orange Newport Beach: Back Bay Hills. Southern Coastal Comment
  SEINET13953030 Image available Quercus agrifolia Kay Raeder 1955-1 499 Orange Flying Cow ranch, San Jose Hills, Pacific Coast, 850 feet altitude 259 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
  RSA725472  Quercus agrifolia var. agrifolia Fred M. Roberts, Megan Lulow 2007-7-30 6546 Orange Fremont Canyon, 1.3 km NE Irvine Lake spillway, North Irvine Ranch Policy Area. 253 Comment
  RSA751190  Quercus agrifolia var. agrifolia A. C. Sanders 2008-7-3 35684 Orange Upper Weir Canyon, along Windy Ridge Road at huge sandstone boulder (visible on Google Earth), 1.3 mi. SE of Walnut Canyon Reservoir 314 Comment
  IRVC16619  Quercus berberidifolia Gordon A. Marsh, Karlin G. Marsh 1977-9-1 s.n. Orange Mission Viejo: Jeronimo Springs. Southern Coastal Comment
  IRVC23334  Quercus berberidifolia Fred M. Roberts 1981-11-15 452 Orange San Juan Canyon; N-side of Hwy 74; 0.3km SW Lower San Juan Picnic Ground Santa Ana Mountains 423 Comment
  RSA0042530  Quercus berberidifolia Fred M. Roberts 2013-5-30 7779 Orange Lomas de Santiago: Santiago Creek wash, at Santiago Canyon Road bridge (south side), 0.3km W jct. Silverado and Santiago Canyon Roads. 299 Comment
  RSA171930  Quercus berberidifolia Robert F. Thorne 1963-7-26 32828 Orange Santa Ana Mts., Cleveland National Forest, Trabugo District. 1189 Comment
  RSA588844  Quercus berberidifolia Fred M. Roberts 1989-11-7 4453 Orange Rancho Mission Viejo: TRW Lease Holding, ridge south of the confluence of Gabino and Blind Canyons, 5.0 km NE Clement Survey Market. 155 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
  UCR132889  Quercus berberidifolia Adrian Wolf 2000-6-1 468 Orange Santa Ana Mtns., North Ranch Policy Plan Area, West Fremont Canyon 534 Comment
  RSA697627  Quercus chrysolepis Leo Miller 1938-3-26 s.n. Orange Summit of Saddleback. Comment
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Apr 26 2014
  UCSB52941  Quercus chrysolepis Roberts, Fred 1983-11-4 Orange Santa Ana Mountains; upper Trabuco Canyon, 1.2 km. NE Los Pinos Peak; 3.5 km. SSE Trabuco Peak 1320 Comment
  JEPS83585  Quercus dumosa Teresa Sholars, Judith Greenlee, and Fred Roberts 1988-3-29 817 Orange Dana Point Headlands, ca 50 m e of ocean bluff Dana Point Headlands Comment
  UCR224164  Quercus dumosa Fred M. Roberts 2008-9-10 7097 Orange South Coast, Dana Point, Dana Point Headlands, CNLM Preserve, north of Marguerita Drive, 0.5 km west northwest Marine Institute, Dana Point Harbor Comment
  UCSB52409  Quercus dumosa Roberts, Fred 1982-7-1 Orange South Laguna; Niguel Hill, at end of Sea Island Dr., 1.9 km. SE Aliso Peak 210 Comment
  CAS-BOT-BC487559  Quercus ilex R. E. Riefner, Jr. 2014-11-21 14 -393 Orange City of Lake Forest, English Canyon, Aliso Creek, S of Cherry Ave., end of 2nd St., Aliso Creek Bikeway 135 Comment
  SEINET7249074  Quercus suber R. E. Riefner Jr. 2014-1 14 -89 Orange City of Yorba Linda, Yorba Linda Regional Park along East La Palma Ave., W of Yorba Linda Blvd; Parking Low #7. 92 Comment
  UC1135896  Quercus wislizeni H. E. Norton 1931-3-20 42 Orange ridge between Ladd Canyon and East Fork Canyon; Corona Quad. 1036 Comment
  UCR231344  Quercus wislizeni A. C. Sanders, T. B. Salvato, Kent Beaman 2011-11-3 39934 Orange Peninsular Range; Santa Ana Mtns., near Pleasants Peak along the Main Divide Truck Trail 1152 Comment
  RSA725579  Quercus wislizeni var. frutescens Fred M. Roberts, Robert L. Allen, Trish Smith 2007-6-15 6535 Orange Along dirt road on ridge between Fremont and Black Star Cyns., 5.2km ENE Irvine Lake Spillway and 1.7km W Hidden Ranch. 739 Comment
  RSA598966  Rafinesquia californica Scott D. White 1997-3-28 4838 Orange Santa Ana Mountains: above Modjeska Canyon, proposed water tank site. 427 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
  SD144019  Rafinesquia californica Scott D. White 1997-3-28 4838 Orange Above Modjeska Canyon: Proposed water tank site. 424 Comment
  RSA0015962  Ranunculus californicus Fred M. Roberts 2012-4-24 7531 Orange San Joaquin Hills: Buck Gully, above main trail, 2 km W Signal Peak and about 0.4 km S San Joaquin Hills Road. 155 Comment
  RSA0030882  Ranunculus cymbalaria subsp. saximontanus Helen D. Gris 1902-04 s.n. Orange Unspecified. Comment
  RSA743371  Raphanus sativus Fred M. Roberts 2008-4-2 6841 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  UCR100464  Raphanus sativus B. G. Pitzer 1996-4-30 2777 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  RSA769339  Rhamnus californica E. W. Lathrop 1974-6-27 7412 Orange 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest. 396 Comment
  SEINET3075983 Image available Rhamnus californica Reid Moran 1975-7-18 22598 Orange Common near Yaeger Mine, upper Trabuco Canyon, Santa Ana Mountains. 725 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
  LA207808  Rhamnus crocea subsp. ilicifolia W. E. Pequegnat; 1937-9-6 sn Orange Santa Ana Mountains, Ortega Rd Comment
  CAS-BOT-BC56031  Rhamnus ilicifolia P. C. Everett 1935-6-19 7242 Orange Santa Ana Mts., Trabuco Canyon, 2 mi. below (SW.) Forest Service Patrol Station 365 Comment
  CAS-BOT-BC56039  Rhamnus ilicifolia C. B. Wolf 1931-3-6 1845 Orange 1/2 mile above Trabuco Oaks, Trabuco Canyon, west slope of the Santa Ana Mts. 457 Comment
  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
  RSA462  Rhamnus ilicifolia J. T. Howell 1927-6-17 152 Orange Botany Garden, Rancho Santa Ana. 152 Comment
  SBBG27367  Rhamnus ilicifolia P. C. Everett 1935-6-17 Orange Coldwater Cyn, 0.5 mi above Glen Ivy Resort 457 Comment
  SD247722  Rhamnus ilicifolia R. F. Thorne, C. W. Tilforth, E. W. Lathrop. 1977-4-27 497703 Orange Northern Santa Ana Mountains: Sierra Peak. 900 Comment
  LA62809  Rhus integrifolia Carl Epling; Harlan Lewis 1940-4-21 sn Orange hills 6 mi. E of San Juan Capistrano Comment
  RSA0073655  Rhus integrifolia Fred M. Roberts 2010-3-12 7184 Orange Southeast Coast: Dana Point Headlands: Harbor Point Park, South of Green Lantern and west of Dana Point Harbor, c.a. 150 meters SE Interpretive Center. 50 Comment
  SFV16185  Rhus integrifolia R. K. Stachelek, B. Anderson, F. Schropshire 1995-3-1 36 Orange Newport Beach, west side of Upper Newport Bay adjacent to Santa Ana Delhi channel. About 100 m west of footbridge. Comment
  UCR106757  Rhus integrifolia B. G. Pitzer, M. Georgiady 1997-4-5 3081 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
  POM212356  Rhus ovata C. B. Wolf 1931-3-6 1857 Orange Trabuco Canyon, 1.5 mile below Trabuco Camp Grounds 549 Comment
  RSA701660  Rhus ovata Anonymous 1929-12-1 s.n. Orange Black Star Canyon Comment
  UCSB12554  Rhus ovata Huot, J. 1961-3-26 Orange Laguna Canyon Road, 9 miles from Highway 101 304 Comment
  RSA542519  Rhus trilobata var. quinata Fred M. Roberts, G. A. Marsh 1986-8-27 3108 Orange Santa Ana Mountains: Santiago Peak, Main Divide Truck Trail, 0.1km WNW Summit. 1620 Comment
  CAS-BOT-BC173123  Ribes indecorum C. B. Wolf 1931-3-6 1833 Orange 1 1/2 miles below Trabuco Oaks along Trabuco Canyon road, west slope Santa Ana Mts. 304 Comment
  LA205444  Ribes indecorum O. A. Plunkett; 1939-2-18 sn Orange 15 mi. E of Capistrano Comment
  RSA5409  Ribes indecorum Carl B. Wolf 1932-12-19 4440 Orange Main divide of Santa Ana Mts. between Sierra Peak and Skyline Drive. 762 Comment
  UCSB48367  Ribes indecorum Roberts, Fred 1982-4-18 Orange SANTA ANA MTNS; Hot Springs Canyon; 0.8km SW Falcon Group Camp 306 Comment
  SBBG72052  Ribes malvaceum M. N. Ackley -May-1925 996 Orange Silverado Cyn 298 Comment
  RSA0021665  Ribes malvaceum Keith E. Hoffmaster 1932-4-17 517 Orange Santa Ana Mts. [Orange/Riverside Cos] Comment
  RSA441490  Ribes malvaceum var. viridifolium Anstruther Davidson 1977-5-18 5623 Orange Santa Ana Mts, Cleveland National Forest, Bear Springs. 1220 Comment
  SD27978  Ribes malvaceum var. viridifolium B. D. Stark 1932-2-22 Orange Rancho Santa Ana, Santa Ana Canyon, in canyon west of Roundtop Peak. 456 Comment
  UCR222393  Ribes malvaceum var. viridifolium Mark A. Elvin, Laura Soloro, Adam Sriro 2003-1-10 2219 Orange Peninsular Range; Santa Ana Mtns., c. 1.6 mi. west of Sierra Peak along road to powerlines, near Claymont Clay Mine 457 Comment
  LA205495  Ribes roezlii W. Pequegnat; 1938-6-15 sn Orange Santa Ana Mountains, Santiago Peak Comment
  PASA2267  Ribes roezlii Frank W. Peirson 1923-5-6 Orange Santiago Peak 1645 Comment
  CAS-BOT-BC173738  Ribes speciosum Marcus E. Jones 1931-3-23 28326 Orange Laguna Comment
  RSA101786  Ribes speciosum R. Weatherby 1950-2-25 1028 Orange Eagle Canyon, Santa Ana Mts. 701 Comment
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Nov 18 2013
  RSA162813  Ribes speciosum J. D. Olmsted 1958-3-4 20 Orange Small pond with westward drainage into Irvine lake, 250yards. West of Oak Flat fire road intersection, which is 9 miles southeast of Corona in Santa Ana Mts. 793 Comment
  UCR3197  Ribes speciosum Chuck Elliott 1964-5-2 s.n. Orange Los Angeles Basin Region, Carbon Canyon 61 Comment
  OBI70101  Ricinus communis D. G. Kelch 2006-12-9 6 .56 Orange Irvine. University dr along tidal Crk just E of I-73. 9 Comment
  RSA797435  Ricinus communis Keith E. Hoffmaster 1935-2-17 s.n. Orange Near Costa Mesa Comment
  RSA0045587  Ricinus communis Anonymous 1949-1 s.n. Orange Santa Ana. CP3. Comment
  RSA652397  Ricinus communis L. M. Anderson 1948-2-17 s.n. Orange Roadside plant on east Fairhaven Ave., 4 mi. e. of Santa Ana. 76 Comment
  IRVC25524  Robinia pseudoacacia Fred M. Roberts 1987-11-17 3755 Orange Serrano Creek, near Trabuco Road west of Canada Road, 2.5km NNE El Toro Fire Station, Lake Forest 146 Comment
  RSA564318  Romneya coulteri B. Pitzer 1992-5-21 1938 Orange Cleveland National Forest. State Hwy 74, 1 mi uphill from the 2000 ft. marker and to the left c. 1 mi on an old paved road. 762 Comment
  RSA722425  Romneya coulteri Minor Warne 1934-4-21 s.n. Orange Junction Santiago and Black Star Canyons. Comment
  UC1126495  Romneya coulteri H. E. Norton 1931-3-6 36 Orange Baker Canyon 609 Comment
  UC1618115  Romneya coulteri Donald G. Nelson 1936-6-5 435 Orange Hills NE of Fullerton 91 Comment
  SEINET7881036 Image available Romneya coulteri F. R. Fosberg 1931-1 S 5094 Orange Lower Santiago Comment
  RSA703026  Rorippa palustris subsp. occidentalis R. E. Riefner Jr. 2004-8-27 4 -393 Orange City of Irvine, San Diego Creek at 405 freeway. 50 Comment
  POM1501  Rosa californica D. L. Crawford 1916-07 s.n. Orange Near Laguna Comment
  RSA499273  Rosa californica Claire Kibbe 1936-07 s.n. Orange Santa Ana Canyon. Comment
  UCR192981  Rosa californica A. C. Sanders, Fred M. Roberts 2008-6-17 35481 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Agustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  RSA0045576  Rosa californica Minor Warne 1934-4-21 s.n. Orange Limestone Canyon by Scout Camp. Comment
  SD133065  Rosmarinus officinalis A. C. Sanders 1990-10-6 10202 Orange Newport Bay, North Star County Beach area on SW end of bay, ca. 2 km inland of Hwy. 1. Clearly spontaneous, not planted. 0 Comment
  UCR188927  Rosmarinus officinalis Robert DeRuff 2007-11-24 s.n. Orange Newport Beach, Upper Newport Bay, North Star Beach 4 Comment
  JEPS47286  Rubus pensilvanicus Lawrence M. Booth 1932-7-19 1271 Orange Bolsas Creek Comment
  LA208250  Rubus ursinus Martha Hilend; May 1921 42 Orange Orange County Park Comment
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Feb 5 2015
  POM2667  Rubus ursinus Philip A. Munz 1918-5-4 2219 Orange Laguna Beach. Comment
  UCR193809  Rubus ursinus A. C. Sanders, Fred M. Roberts 2008-7-16 35833 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, canyon c. 0.12 mi. below Dripping Spring, c. 7.5 mi. ESE of Tustin 360 Comment
  RSA39335  Rumex acetosella E. L. Paddock 1943-5-26 12741 Orange Near Santa Fe Railway 1/8 mile east of Northam Station. Buena Park. Comment
  UCR138400  Rumex conglomeratus Scott D. White, Brian Leatherman 1997-6-12 5340 Orange Santa Ana Mtn. foothills, E of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e. c. 2-4 mi east of Hwy I-15/Hwy 74 junction 76 Comment
  CAS-BOT-BC421794  Rumex conglomeratus John Thomas Howell 1927-6-17 2554 Orange Hills on north side of Santa Ana Canon [Canyon] 152 Comment
  RSA5814  Rumex conglomeratus Carl B. Wolf 1932-6-28 3806 Orange Bryant Ranch: Edge of field on Bixby Ave. 9 Comment
  UCD101162  Rumex crispus Scott D. White 1997-3-26 4811 Orange Univ. of Calif. Irvine Campus: Site of proposed student recreation center, east of main campus. Existing 'Farm School' and adjacent grasslands (horse pasture) between California Ave. and Culver Dr. 304 Comment
  UCR166796  Rumex crispus R. E. Riefner Jr. 2005-7-9 05- 550 Orange South Coast, city of Huntington Beach, Huntington Central Park, Goldenwest Street near Slater Avenue 1.5 Comment
  UCR5920  Rumex crispus David M. Peterson 1966-3-9 660309- 5 Orange 2 miles east of San Juan Capistrano on the road to Elsinore 305 Comment
  RSA730995  Rumex maritimus Fred M. Roberts 2006-11-15 6469 Orange Santa Ana Cyn., Santa Ana River, north bank, 1.1 km ENE Imperial Hwy crossing. 85 Comment
  POM47585  Rumex maritimus I. M. Johnston 1924-8-29 s.n. Orange 3 miles north of Balboa. Comment
  RSA65452  Rumex maritimus F. W. Peirson 1924-8-29 s.n. Orange 3 miles from Balboa Beach. Comment
  RSA203  Rumex salicifolius J. T. Howell 1927-7-15 269 Orange Santa Ana River, Rancho Santa Ana [Botanic Garden] 152 Comment
  RSA466122  Rumex salicifolius Louis C. Wheeler 1932-6-22 840 Orange Newport Bay. 1 Comment
  RSA610241  Rumex salicifolius Fred M. Roberts, Tony Bomkamp 1997-3-13 4984 Orange Rancho Mission Viejo: Christianitos Canyon near confluence of Gabino Canyon, 5.1km NE Clemente Survey Mark. 85 Comment
  RSA542460  Rumex salicifolius Fred M. Roberts 1988-4-14 3925 Orange IRVINE: south of the San Diego Freeway, 1.2 km. ENE French Hill. 41 Comment
  CAS-BOT-BC454145  Ruppia maritima S. B. Parish; W. F. Parish 1882-10-1 1607 Orange Newport Bay Comment
  CHSC26520  Ruppia maritima James Henrickson 1970-7-24 5023 Orange 3 miles NW of Huntington Beach; in Inner Bolsa Bay. 0 Comment
  UCR25846  Salicornia bigelovii Wayne R. Ferren 1980-8-27 2329 Orange South Coast, west side of Backbay Drive, c. 1.5 km northeast of Hwy 1, along channel of Newport Backbay, Newport Beach. Comment
  POM186291  Salicornia bigelovii Joseph A. Ewan 1932-7-29 7713 Orange Newport lagoon Comment
  RSA70034  Salicornia bigelovii F. W. Peirson 1924-8-29 5088 Orange 2.5 miles from Balboa on road inland along creek. Comment
  SBBG47665  Salicornia pacifica R. N. Philbrick 1973-8-31 Orange Just E of University of California, Irvine, Botanic Garden marsh Comment
  UCSB13412  Salicornia pacifica Whittington, M. 1962-4-20 Orange South side of back Newport Bay about one mile south of saltworks, Newport Comment
  POM122354  Salicornia virginica Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  RSA232235  Salicornia virginica James Henrickson 1970-7-25 5036 Orange 3.5 miles NW of Huntington Beach on sandy margin of Bolsa Bay, 1/4 mile SE of Warner Ave. along PCH; at sea level. 0 Comment
  RSA478904  Salicornia virginica Albert J. Perkins 1917-10-14 s.n. Orange Salt marsh at mouth of Aliso Canyon. Comment
  SEINET6653605 Image available Salicornia virginica Gary Maxwell 1970-1 BC- 3 Orange ca. 4 mi. So. of Seal Beach, NE of Pacific Coast Hwy, at Bolsa Chica 0 Comment
  UC1136468  Salicornia virginica A. Lewis Apr 1934 388 Orange Celery Corona Quad. 0 Comment
  UC455214  Salicornia virginica I. J. Condit 1908-7-20 Orange Los Alamitos Comment
  UC466068  Salicornia virginica D. L. Crawford 739 Orange Laguna Beach Region Comment
  UCR211856  Salicornia virginica Valerie Soza, Kevin Clark, LeRoy Gross, Will Miller, Fred M. Roberts, G. D. Wallace 2001-4-4 1101 Orange South Coast, Seal Beach National Wildlife Refuge, Seal Beach U. S. Naval Weapons Station, across access road from Nature Center (Bldg 226) 3 Comment
  RSA5282  Salicornia virginica B. D. Stark 1932-12-9 4430 Orange Capistrano Beach at Doheny Palisades. 5 Comment
  CAS-BOT-BC129737  Salix bonplandiana Carl B. Wolf 1932-4-8 2949 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon. 120 Comment
  RSA0042767  Salix exigua Fred M. Roberts 2012-7-18 7675 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
  RSA6452  Salix exigua Carl B. Wolf 1932-4-15 2954 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon. 120 Comment
  RSA751524  Salix exigua A. C. Sanders, Fred M. Roberts 2008-8-7 35988 Orange lower Weir Canyon, at narrow gorge c. 0.6 mi. above mouth of cyn at Irvine Ranch gate. 185 Comment
  SJSU220  Salix exigua C. B. Wolf 1932-4-15 2954 Orange S of pear orchard Rancho Santa Ana near Santa Ana R, Santa Ana Canyon 121 Comment
  SJSU255  Salix exigua C. B. Wolf 1932-4-15 2953 Orange S of pear orchard Rancho Santa Ana near Santa Ana R, Santa Ana Canyon 121 Comment
  LA208639  Salix exigua var. hindsiana Carl B. Wolf; 1932-4-15 2954 Orange Santa Ana Canyon, Rancho Santa Ana, near Santa Ana River, S of pear orchard, in Botanic Garden 120.0 Comment
  LA208640  Salix exigua var. hindsiana Carl B. Wolf; 1932-7-7 3845 Orange Rancho Santa Ana, along ditch on Bixby Ave., 1 km W of Hansen Rd, near town of Los Alamitos 7.5 Comment
  LA208643  Salix exigua var. hindsiana Carl B. Wolf; 1932-4-15 2953 Orange Santa Ana Canyon, Rancho Santa Ana, near Santa Ana River, S of pear orchard, in Botanic Garden 120.0 Comment
  SBBG58935  Salix exigua var. hindsiana C. B. Wolf 1932-4-15 2953 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Cyn 120 Comment
  UC454761  Salix exigua var. hindsiana I. J. Condit 1908-7-20 Orange Los Alamitos Comment
  CAS-BOT-BC108135  Salix gooddingii Carl B. Wolf 1932-4-8 2950 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon 120 Comment
  CAS-BOT-BC108136  Salix gooddingii Le Roy Abrams 1903-4-16 3256 Orange Santa Ana River, near Orange Comment
  LA208663  Salix gooddingii Carl B. Wolf; 1932-4-8 2950 Orange Santa Ana Canyon, Rancho Santa Ana, near Santa Ana River, at SE corner of pear orchard in Botanic Garden 36 Comment
  SD133007  Salix gooddingii Andy C. Sanders 1990-10-6 10184 Orange Newport Bay, North Star County Beach on the SW end of the bay, ca 2 km inland of Hwy 1 3 Comment
  UCR16418  Salix gooddingii J. S. Davis 1972-4-1 7 Orange Newport Beach. 3.2 mi N on Back Bay Road from corner of San Jaquin Hills Road. on back edge of turnout. 6 Comment
  SEINET13212664 Image available Salix gooddingii Unknown 1903-1 3256 /1227 Orange Santa Ana River near Orange, S. California. Comment
  RSA0034669  Salix hindsiana var. leucodendroides Carl B. Wolf 1932-3-16 2715 Orange Rancho Santa Ana, Santa Ana River bottom. 121 Comment
  RSA0038335  Salix hindsiana var. leucodendroides Carl B. Wolf 1932-3-16 2714 Orange Rancho Santa Ana. 121 Comment
  LA210261  Salix laevigata Lawrence M. Booth; 1932-12-16 1380 Orange Santa Ana River, W of Wolfe's Ranch, 0.5 mi from ocean 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
  RSA735200  Salix laevigata Norland 1929-2-9 1 Orange Cypress Comment
  UCR279478  Salix laevigata Robert DeRuff 2012-3-12 576 B Orange South Coast, Newport Beach, Shellmaker Island, 0.08 mi. west of Back Bay Drive 2 Comment
  RSA0030858  Salix laevigata Carl B. Wolf 1932-4-8 2949 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon. 120 Comment
  UCSB57547  Salix laevigata Roberts, Fred 1984-4-18 Orange Wagon Wheel Regional Park: 3.0km NNE Median Survey Mark; 2.1km NW Bench Mark 422 190 Comment
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Oct 28 2018
  CAS-BOT-BC125331  Salix lasiandra var. lasiandra R. E. Riefner, Jr. 2006-10-4 06 -475 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lake Forest, Aliso Creek near Portola Parkway at El Toro Rd. 225 Comment
  CAS-BOT-BC106967  Salix lasiolepis Scott D. White 1997-3-26 4817 Orange Univ. of Calif. Irvine Campus: Site of proposed student recreation center, east of main campus. Existing Farm School and adjacent grasslands (horse pasture) between California Ave. and Culver Dr. 30 Comment
  UCR26632  Salix lasiolepis E. W. Lathrop 1966-4-6 6137 Orange Santa Ana Mtns., 5 miles east of Trabuco Oaks, Trabuco Canyon, Cleveland National Forest 396 Comment
  CAS-BOT-BC128464  Salix lasiolepis var. lasiolepis Ira L. Wiggins 1966-3-22 20549 Orange Along stream bank, bottom of Silverado Canyon, about 5 mi above Ranger Station, Cleveland National Forest Comment
  CAS-BOT-BC126303  Salix sessilifolia Carl B. Wolf 1932-4-15 2954 Orange Rancho Santa Ana, near Santa Ana River, Santa Ana Canyon 120 Comment
  CAS-BOT-BC126310  Salix sessilifolia Helen D. Geis 1902-1-1 554 Orange Santa Ana River Comment
  UCR103711  Salpichroa origanifolia B. G. Pitzer, T. Tennant 1997-11-8 3367 Orange San Joaquin Hills, Crystal Cove State Park, along Moro Canyon Trail, from beginning to a point c. 1.75 mi. up the canyon. 85 Comment
  CDA3167  Salsola australis R. E. Riefner Jr. 2007-3-18 07 -152 Orange City of Newport Beach. North shore of Newport Bay, Dover Beach, general vicinity of Morning Star Lane and Polaris Drive. Comment
  SEINET5586232  Salsola australis A. C. Sanders, Fred M. Roberts, Jutta Burger 2009-1 37200 Orange Peninsular Range; Santa Ana Mtsn.: Lomas de Santiago, Bee Flat at mouth of Limestone Canyon. 264 Comment
  UCR128168  Salsola australis Scott D. White, Michael Honer 2003-7-10 9625 Orange Santa Ana Mountain foothills, Hills above Trampas Canyon, just south of Ortega Hwy 183 Comment
  IRVC418  Salsola tragus A. Adams 1965-5-2 Orange Newport Beach, Corona del Mar, Little Corona Beach. Southern Coastal Comment
  UCD99478  Salsola tragus Ira L. Wiggins 1965-10-18 20271 Orange Vacant lot at corner of Chapman St. and Victor Dr., Fullerton. Comment
  RSA184150  Salsola tragus I. L. Wiggins 1966-2-12 20436 Orange N. side of La Palma Ave. near Harbor Blvd., Anaheim. Comment
  UCLA55660  Salvia C. Epling and H. Lewis 1940-4-21 Orange 6 mi e San Juan Capistrano Comment
  RSA34605  Salvia apiana N. C. Cooper 1944-6-4 1329 Orange San Juan Canyon. 152 Comment
  RSA411337  Salvia apiana N. C. Cooper 1949-5-1 3944 Orange San Juan Canyon. 457 Comment
  RSA697873  Salvia apiana Kenneth Beard s.n. Orange Canyon E of Olinda. Comment
  RSA722336  Salvia columbariae L. C. Hull 1934-5-6 s.n. Orange Trabuco Canyin. Comment
  RSA747699  Salvia columbariae Fred M. Roberts 2008-4-16 6912 Orange Dana Point: Dana Point Headlands, CNLM Preserve, 0.8 km W Marine Institute, Dana Point Harbor. 60 Comment
  RSA659990  Salvia columbariae Steve Teh 1994-4-28 11 Orange Modjeska Grade rd. 3/4 mile back on fire rd. Comment
  CAS-BOT-BC233674  Salvia leucophylla Carl B. Wolf 1932-6-2 3701 Orange Rancho Santa Ana between Administration Bldg. and tennis court, Santa Ana Canyon 198 Comment
  JEPS62728  Salvia leucophylla Frank W. Peirson 1927-6-20 7349 Orange Rancho Santa Ana; Mrs. Bryant's 182 Comment
  RSA658203  Salvia leucophylla T. A. Daubert 1991-5-19 655 Orange Tucker Wildlife Sanctuary, Modjeska Canyon inside sanctuary. Comment
Read comments
Dec 1 2016
  UC729647  Salvia leucophylla Carl B. Wolf 1932-6-2 Orange Rancho Santa Ana Rancho Santa Canyon (between administration bldg. and tennis court) 198 Comment
  CAS-BOT-BC229997  Salvia mellifera Marcus E. Jones 1926-3-10 s.n. Orange Near Santa Ana Canon [Canyon] Comment
  RSA434144  Salvia mellifera E. A. McGregor 1964-6-4 s.n. Orange On Highway 74, between Elsinor and San Juan Capistrano. 915 Comment
  SFV3231  Salvia mellifera A. M. Johnson 1932-4-23 4028 Orange Dry hills north of Orange. Comment
  UCSB12637  Salvia mellifera Whittington, M. 1962-4-20 Orange Modjeska grade road; between Modjeska and Trabuco Canyon Comment
  IRVC26683  Salvia sonomensis Mark A. Elvin 2004-4-4 3217 Orange UCI Arboretum Southern Coastal 15 Comment
  RSA434083  Salvia spathacea Unspecified 1920-6-2 s.n. Orange Laguna. Comment
  RSA713909  Salvinia molesta Richard E. Riefner 2004-9-25 4 -441 Orange City of Anaheim, floodplain N of Santa Ana River, Anaheim Wetlands Reserve, ca. 0.5 km E of Wier Canyon Rd. 102 Comment
  POM213050  Sambucus mexicana C. B. Wolf 1934-9-21 6140 Orange Silverado Canyon, west slope of Santa Ana Mountains, 3/4 mi. below foot of Silverado Motorway. 549 Comment
  RSA650821  Sambucus mexicana Daniel Truong 1991-5-13 6 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of 'closed area' Comment
  UC1125355  Sambucus mexicana A. Lewis Mar 1934 335 Orange Santa Ana Canyon Corona Quadrangle Comment
  CAS-BOT-BC238828  Sambucus nigra subsp. caerulea Carl B. Wolf 1934-9-21 6140 Orange Silverado Canyon, west slope of Santa Ana Mts., 3/4 mi. below foot of Silverado Motorway 548 Comment
  CAS-BOT-BC238831  Sambucus nigra subsp. caerulea P. C. Everett 1935-6-18 7220 Orange Santa Ana Mts., summit of Santiago Pk. 1731 Comment
  UCSB69268  Sambucus nigra subsp. caerulea Sanders, A.; Roberts, Fred 2008-7-3 Orange Peninsular Range; Santa Ana Mtns. Weir Canyon, along Windy Ridge Rd. at hairpin turn/road junction below huge sandstone boulder (visible on Google Earth), 1.2 mi. SE of Walnut Canyon Reservoir (Black Star Canyon 7.5 ' Q.) 285 Comment
  POM186292  Samolus parviflorus Joseph A. Ewan 1932-7-29 7716 Orange Bolsa Chica near Huntington Beach. Comment
  POM3415  Sanicula crassicaulis I. M. Johnston 1918-5-4 276 Orange Hills back of Laguna Beach. 152 Comment
  POM6326  Sanicula crassicaulis P. A. Munz, L. T. Street, G. Williams 1919-5-3 2636 Orange Santa Ana River Canyon. Comment
  RSA789220  Sanicula crassicaulis Naomi Fraga, Duncan Bell 2009-5-11 2722 Orange Chiquita Trail 762 Comment
  SD236165  Sanicula crassicaulis A. C. Sanders, Fred M. Roberts 2008-5-6 35267 Orange Peninsular Range; Santa Ana Mtns.: Lomas de Santiago, slope SE of road junction along ridge road, near head of Aqua Chinon Cnayon, 2.4 miles north of El Toro 470 Comment
  UC1022513  Sanicula crassicaulis C. Ritchie Bell 1953-2-22 3 X482 Orange 5 mi ne of Mission Capistrano (s of Cal Hwy 79) Comment
  IRVC22550  Sanicula crassicaulis var. crassicaulis Fred M. Roberts 1985-5-1 1706 Orange Aliso Canyon, 2.1km NNE Aliso Peak, Aliso Viejo 67 Comment
  SD37460  Sarcocornia pacifica Edith A. Purer 1932-8-31 4876 Orange Moist location on sand dunes. Comment
  JEPS27447  Sarcostemma cynanchoides subsp. hartwegii John Thomas Howell 1927-7-24 2819 Orange Santa Ana Canyon, Rancho Santa Ana 152 Comment
  RSA83973  Saxifraga californica F. W. Peirson 1925-4-11 5730 Orange Slope above mill, in Silverado Canyon, Santa Ana Mountains. Comment
  RSA734917  Schinus molle A. C. Sanders, Fred M. Roberts 2008-6-17 35473 Orange Peninsular Range; Santa Ana Mtns: Lomas de Santiago, Augustine staging area near Limestone Canyon Rd. gate at Santiago Cyn Rd. 260 Comment
  RSA658195  Schinus molle T. A. Daubert 1991-5-26 674 Orange Tucker Wildlife Sanctuary, Modjeska Canyon nature trail. Comment
  RSA528055  Schinus terebinthifolius A. C. Sanders 1990-10-6 10201 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Highway 1. 1 Comment
  UCR43573  Schinus terebinthifolius B. A. Prigge 1983-12-17 5520 Orange Santa Ana Marsh and adjacent lowlands. SE-most part of oil field just north of Pacific Coast Hwy between remnant Santa Ana River channel and dirt road 2 Comment
  UCSB48076  Schismus barbatus 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
  UCSB56462  Schoenoplectus americanus Thorne, Robert 1975-4-6 Orange San Joaquin Marsh: near Irvine and coast Comment
  POM1390  Schoenoplectus californicus D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon. Comment
  UCR210371  Schoenoplectus californicus T. B. Salvato, Billy Deane 2006-10-16 1937 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  POM21177  Schoenoplectus maritimus Helen D. Geis s.n. Orange Peat Lands 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
  SD245180  Scirpus microcarpus R. F. Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49574 Orange Santa Ana Mountains: San Juan Canyon at lower Picnic Camp, just below Ortega Highway (74). Comment
  SBBG104115  Scrophularia californica B. Pitzer, S. Hemstreet 1992-5-21 1944 Orange St Hwy 74, 1 mi uphill from the 2000 ft marker Comment
  SD139988  Scrophularia californica B. Pitzer, S. Hemstreet 1992-5-21 1944 Orange Cleveland National Forest; State Hwy 74, 1 mi. uphill from the 2,000 ft. marker, and to the left ca. .1 mi. on an old paved road 762 Comment
  UC1618101  Scutellaria tuberosa Donald G. Nelson 1935-7-6 258 Orange San Juan Canyon Comment
  CAS-BOT-BC61966  Selaginella John Thomas Howell 1937-7-22 2834 Orange Claymine Canyon, Santa Ana Mts. 182 Comment
  RSA301980  Selaginella bigelovii James R. Shevock 1970-12-20 573 Orange Silverado Canyon 579 Comment
  UCR150919  Selaginella bigelovii Valerie Soza, LeRoy Gross 1999-6-7 476 Orange Santa Ana Mountains, West side of Modjeska Peak, along Main Divide Road 1448 Comment
  IRVC894  Senecio californicus C. Weir 1965-4-17 Orange Newport Beach; Balboa Island. Southern Coastal Comment
  RSA588799  Senecio californicus Fred M. Roberts, D. Bontrager 1990-4-18 4561 Orange Rancho Mission Viejo: ridge between Christianitos and Gabino Canyons (Riverside Cement Lease Holdong), 5.5 km SE Playa Survey Marker. 152 Comment
  CAS-BOT-BC333069  Senecio flaccidus var. douglasii John Thomas Howell 1927-6-6 2442 Orange Santa Ana River bottom, Santa Ana Canyon 152 Comment
  RSA710817  Senecio linearifolius Robert Noll 2003-8-20 s.n. Orange Southern Coastal region: Irvine, UCI campus, near intersection of Culver and Shady Canyon Roads 61 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
  RSA450861  Senecio mikanioides Gordon Marsh, K. G. Marsh 1978-1-29 s.n. Orange Santa Ana Mountains, Lower Ladd Canyon, reach between west and east forks Comment
  CAS-BOT-BC364604  Senecio vulgaris Ira L. Wiggins 1966-2-18 20447 Orange Roadside near end of county road, 1/2 mi. W. of entrance to Rancho Santa Ana Comment
  RSA650816  Senecio vulgaris Daniel Truong 1991-5-5 7 Orange Irvine Regional Park, left field adjacent to main entrance, within 1/4 mile radius of ''closed area'. Comment
  SEINET11237911 Image available Senna marilandica Fred M. Roberts, Sandra L. Leatherman 2008-9-3 7080 Orange Yorba Linda, Santa Ana River Canyon, Santa Ana River, 0.6 km W Gypsum Cyn. bridge, south of La Palma Ave 113 Comment
  UCR188942  Sesbania punicea Robert DeRuff 2006-1 568 Orange Newport Beach, Upper Newport Bay, watercourse near end of 23rd Street on west side of the Bay 10 Comment
  CAS-BOT-BC438198  Sesuvium verrucosum Le Roy Abrams 1901-6-1 1774 Orange Laguna Comment
  CAS-BOT-BC438201  Sesuvium verrucosum D. L. Crawford 1916-8-1 s.n. Orange Laguna Beach Region. Laguna Canon [Canyon] Comment
  RSA728655  Setaria adhaerens R. E. Riefner 2006-7-23 6 -310 Orange City of Santa Ana, 17th st. at 55 Hwy. 49 Comment
  CDA2442  Setaria megaphylla R. E. Riefner Jr. 2006-11-19 06 -683 Orange City of San Juan Capistrano, San Juan Creek at La Novia Avenue. Comment
  CAS-BOT-BC243591  Setaria parviflora Ira L. Wiggins 1965-10-24 20294 Orange Orange grove on S side of Yorba Linda Blvd. 1/4 mi. E of State College Blvd., Fullerton Comment
  RSA0027437  Setaria parviflora Fred M. Roberts 2012-7-18 7676 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
  UCR236679  Setaria parviflora Fred M. Roberts, Sandra L. Leatherman 2008-9-17 7101 Orange Peninsular Ranges, Santa Ana River Canyon: Yorba Linda Regional Park adjacent to Santa Ana River, South of La Palma Ave. and 1.7 km ENE Imperial Hwy. bridge over river 87 Comment
  CAS-BOT-BC243633  Setaria pumila J. B. Anderson 1966-5-2 621 Orange Along Newport Freeway at 17th Street, Santa Ana Comment
  CAS-BOT-BC240116  Setaria sphacelata Ira L. Wiggins 1965-9-26 20266 Orange Just south of Letters and Science Building, California State College at Fullerton Comment
  RSA0028739  Setaria verticilliformis R. E. Riefner Jr. 2004-12-12 4 -554 Orange City of Irvine, near Irvine Valley College, strawberry fields along Jeffrey Road near Irvine Center Drive. 37 Comment
  IRVC21654  Setaria viridis R. L. Allen, F. M. Roberts 1982-7-4 A 666 Orange Chino Hills: Carbon Canyon, Carbon Canyon Rd. (State Hwy 142), 1.1 - 1.5 mi SW of the San Bernardino County line. Santa Ana Mountains Comment
  UCR256943  Sidalcea malviflora Naomi Fraga 2009-5-11 2715 Orange Santa Ana Mountains, Cleveland National Forest, San Juan Loop Trail just west of Sugarloaf Spur Trail 912 Comment
  CAS-BOT-BC384498  Silene antirrhina Helen D. Geis 1902-1-1 522 Orange Santiago Cr. Comment
  POM156679  Silene antirrhina L. R. Abrams 1903-4-18 3272 Orange Trabuco arroyo, near San Juan Capistrano. Comment
  UCR102033  Silene gallica B. G. Pitzer 1997-3-25 3012 Orange San Joaquin Hills, Crystal Cove State Park, Pelican Point Area, grassland between Pacific Coast Hwy and the bike trail 30 Comment
  UCR281559  Silene gallica Mitch Provance, Jeremiah George 2017-3-20 317- 112 Orange West Coyote Hills, Fullerton, vicinity of Utility Access Roads E of Gilbert Street and N of Castlewood Dr., on land previously occupied by oil fields. 137 Comment
  CAS-BOT-BC174885  Silene laciniata Munz; Street; Williams 1919-5-3 2671 Orange Santa Ana River [Canon] Canyon Comment
  CAS-BOT-BC174886  Silene laciniata John Thomas Howell 1927-6-26 2598 Orange Claymine [Canon] Canyon , n. Santa Ana Mts. 304 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
  SD245326  Silene laciniata subsp. major Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49595 Orange Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  UC1178641  Silene lemmonii Peter Kamb 1948-6-19 1113 Orange se slope of Santiago Peak Santa Ana Mts., se slope of Santiago Peak (Santa Ana Mts., Orange-Riverside Counties) 1219 Comment
  SEINET219313  Silene verecunda P. C. Everett 1935-6-18 Orange Santa Ana Mountains summit of Santiago Peak. 1731 Comment
  UCR140789  Silybum marianum Robin G. Marushia 2004-5-4 011 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
  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
  RSA16983  Sinapis arvensis Percy C. Everett 1936-3-20 s.n. Orange Rancho Santa Ana Botanic Garden, Santa Ana Canyon. West of Adm. Bldg. 198 Comment
  IRVC1168  Sisymbrium altissimum L. Lewton 1965-3-22 Orange [Newport] Back Bay Newport Beach Comment
  CAS-BOT-BC75238  Sisymbrium irio Ira L. Wiggins 1966-2-12 20443 Orange Orange grove on west side of State College Boulevard, opposite Electra Way, Fullerton. Comment
  IRVC1174  Sisymbrium irio L. Burns 1965-3-15 Orange Corona del Mar, Bayside Dr. Newport Beach Comment
  JEPS14822  Sisymbrium irio G. Byron Deshler 1929-2-23 Orange Yorba Linda Comment
  UCD115600  Sisymbrium irio Ira L. Wiggins 1966-2-5 20425 Orange along Newport Blvd., 4.5 miles N of Orange County Fairgrounds. Comment
  RSA735968  Sisymbrium officinale Scott D. White, Justin Wood 2008-4-22 11906 Orange Telegraph Canyon Road, E of Carbon Canyon Regional Park. 152 Comment
  IRVC1189  Sisymbrium orientale D. Pfirrmann 1965-4-21 Orange 2179 Orange Ave. Costa Mesa Comment
  RSA336970  Sisyrinchium bellum N. C. Cooper 1944-6-4 1330 Orange San Juan Canyon. 152 Comment
  RSA699166  Sisyrinchium bellum G. Gentges 1932-3-27 s.n. Orange Above Irvine Park. In Santiago Canyon. Comment
Read comments
Dec 6 2011
  RSA732226  Sisyrinchium bellum A. C. Sanders, Fred Roberts 2008-4-22 35029 Orange Santa Ana Mtns.: Lomas de Santiago, Limestone Canyon, c. 2 miles SW of Silverado 1200 Comment
  RSA734651  Sisyrinchium bellum A. C. Sanders, Fred M. Roberts, Amber O'Neal, David 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
  RSA789225  Sisyrinchium bellum Naomi Fraga 2009-5-11 2716 Orange San Juan loop trail, Cleveland National Forest just west of Sugarloaf Spur Trail. 912 Comment
  SEINET4171050  Sisyrinchium bellum J. R. Glen 1957-5-3 Orange 1/2 mile from the San Bernardino county line, about 3 miles east of Olinda on the Carbon Canyon road Comment
  RSA752039  Solanum americanum Fred M. Roberts 2008-3-27 6809 Orange Dana Point: Dana Point Headlands, CNLM Preserve near NE Gate, 0.5km W Marine Institute (Dana Point Harbor). 75 Comment
  JEPS12101  Solanum douglasii Alice King 1908-3-1 Orange Santa Ana Comment
  POM183938  Solanum douglasii Philip A. Munz 1932-3-29 12190 Orange Costa Mesa Comment
  RSA232216  Solanum douglasii James Henrickson 1970-7-24 4998 Orange 2 miles NW of Huntington Beach around small freshwater industrial pond at eastern margin of Bolsa Chica Salt Marsh along Huntington Beach Mesa. 0 Comment
  RSA647960  Solanum douglasii Mark Breidenbaugh, Caralisa Breidenbaugh 1992-5-1 7 Orange 1/2 mile south of Chino Hills State Park. 198 Comment
  SD143700  Solanum douglasii Scott D. White 1997-3-28 4828 Orange Above Modjeska Canyon: proposed water tank site 427 Comment
  UCR221897  Solanum douglasii Dick Newell, Don Millar 2010-10-5 41 Orange South Coast, city of Irvine, on Portola Pkwy. 1/4 mile east of Orchard Hills Rd. at Irvine Ranch Conservancy headquarters 95 Comment
  RSA23641  Solanum elaeagnifolium E. R. Johnson 1939-4-25 9499 Orange Santa Ana Canyon. Rancho Santa Ana , along Santa Fe R.R. tracks south of Exp. citrus plot. 122 Comment
  POM212351  Solanum umbelliferum Carl B. Wolf 1931-3-6 1862 Orange North of base of Trabuco Modjeska Grade, west slope of Santa Ana Mts. 305 Comment
  RSA5320  Solanum umbelliferum B. D. Stark 1932-12-30 4475 Orange Rancho Santa Ana. River bottom below Mexican houses. 122 Comment
  RSA553111  Solanum umbelliferum Fred M. Roberts Jr. 1989-5-9 4342 Orange Santa Ana Mts: Gypsum Canyon, west fork, 5.6 km WNW Sierra Peak, c.a. 1 km S Highway 91. 146 Comment
  RSA554628  Solanum umbelliferum Scott D. White 1992-10-13 959 Orange Vicinity of city of Brea, immediately N of Carbon Canyon Road and East of Placentia Avenue. +- 1 mile (airline) S/SE of Tonner Canyon. 183 Comment
  RSA638973  Solanum umbelliferum Valerie L. Soza, LeRoy Gross 1999-6-7 494 Orange West side of Modjeska Peak, along Main Divide Road. 1448 Comment
  RSA792354  Solanum xanti Doris Bowers 1971-4-19 1685 Orange Black Star Canyon Indian Site 762 Comment
  LA203964  Solidago velutina subsp. californica W. Pequegnat; 1937-9-3 sn Orange Santa Ana Mountains, Santiago Peak Comment
  RSA947  Sonchus asper J. T. Howell 1928-4-7 903 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  POM202169  Sonchus oleraceus L. M. Booth 1932-7-23 1305 Orange Corona del Mar, Newport Beach Comment
  RSA234497  Sonchus oleraceus James Henrickson 1970-7-24 4954 Orange 1.5 miles NW of Huntington Beach, along border of Bolsa Chica Salt Marsh at SW end of Huntington Beach Mesa. 8 Comment
  RSA721116  Sonchus oleraceus Anonymous s.n. Orange Neglected city lot 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-BC235343  Sorghum halepense Le Roy Abrams 1901-6-12 1765 Orange Santa Ana Comment
  IRVC23156  Sorghum halepense Fred M. Roberts 1985-7-11 2016 Orange San Joaquin Hills: Laguna Canyon, Laguna Canyon Road near Laguna Lakes, 5.0km ENE Signal Peak. southern coastal 112 Comment
  UC729939  Sorghum halepense Carl B. Wolf 1932-6-13 3724 Orange Malvern & Nicholas Aves. Fullerton 53 Comment
  CHSC26474  Spartina foliosa James Henrickson 1970-7-24 5024 Orange 2 1/2 miles NW of Huntington Beach along south channel of Inner Bolsa Bay, adjacent to Pacific Coast Hy. in Bolsa Chica Salt Marsh. 0 Comment
  OBI22235  Spartina foliosa Peter H. Raven 1957-9-28 11379 Orange N limits of Surfside Comment
  UC1111637  Spartina foliosa Peter H. Raven 1957-9-28 11379 Orange n limits Surfside Comment
  UCSB36211  Spartina foliosa Ferren, Wayne 1980-8-27 Orange Tidal channel of Newport Backbay, W of Backbay Drive ca. 1.5 km NE of Rt. 1, Newport Beach Comment
  IRVC2455  Spartium junceum M. McCartin 1965-5-2 s.n. Orange San Juan Capistrano. Southern Coastal Comment
  CDA3452  Spergula arvensis E. Dudley 1957-3-25 Orange Irvine ranch. 0 Comment
  RSA801710  Spergula arvensis D. M. McF 1953-4-3 s.n. Orange Irvine Coast G.C. Corona Del Mar. Comment
  UCR181661  Spergularia B. G. Pitzer 1996-4-30 2784 Orange South Coast, Upper Newport Bay, Calif. Dept. Fish & Game Ecological Reserve, off (W of) Jamboree Road 6 Comment
  UCR220960  Spergularia Dick Newell, Don Millar 2010-4-20 18 Orange South Coast Region, west ridge of Bommer Canyon at base of future trail, 1.86 km south of Shady Canyon 137 Comment
  SD227786  Spergularia bocconi Scott D. White, Brian Leatherman 1997-6-12 5339 Orange East of San Juan Capistrano: San Juan Creek between Hwy 74 bridge and Mission Vieja site, i.e., ca. 2 to 4 mi E of I-15/ Hwy 74 jtn. 45 Comment
  RSA0097855  Spergularia bocconi L. M. Booth 1932-5-24 1095 Orange Newport Bay, Public Golf Course. Comment
  POM202104  Spergularia macrotheca L. M. Booth 1932-5-19 1062 Orange Newport Bay. Comment
  RSA0097842  Spergularia macrotheca L. R. Abrams 1903-4-17 3258 Orange Between Tustin and Myford. Comment
  RSA478044  Spergularia macrotheca Albert J. Perkins 1923-3-4 s.n. Orange Laguna Beach. Comment
  SBBG69996  Spergularia macrotheca M. N. Ackley -May-1926 77 Orange Sunset Beach 8 Comment
  UCR85725  Spergularia marina Scott D. White 1993-4-28 1279 Orange Pacific slope, Tustin Marine Corps Air Station, NW of Peters Canyon Channel, between Moffett Dr. & Warner Comment
  RSA0098518  Spergularia marina D. L. Crawford 1916-7-26 s.n. Orange Aliso Canyon. Comment
  RSA0098537  Spergularia marina I. M. Johnston 1924-8-29 s.n. Orange 3 miles north of Balboa. Comment
  RSA0098539  Spergularia marina Joseph A. Ewan 1931-7-31 4760 Orange Smeltzer. Comment
  RSA0098540  Spergularia marina James Henrickson 1970-7-25 5089 Orange 3.5 miles NW of Huntington Beach growing along graded inner slope of East Garden Grove-Wintersburg Flood Control Channel near Bolsa Chica Salt Marsh. 0 Comment
  RSA47078  Spergularia rubra Albert J. Perkins 1926-4-27 14728 Orange SAnta Ana, Mr. Perknis yard Comment
  RSA0011086  Spergularia salina James Snow 1932-1 4 Orange Bryant Ranch, near Long Beach. Station no. 1. Comment
  IRVC19346  Spergularia villosa R. L. Allen 1977-6-1 Orange 60m N of the intersection of [Acapulco] and Golden Lantern; sandy soil. Dana Point Comment
  RSA0098710  Spergularia villosa L. M. Booth 1932-5-24 1089 Orange Near Bay Shore Camp, Newport Bay. Comment
  UCR186146  Sphaeralcea emoryi var. emoryi Robert DeRuff 1994-4-24 452 Orange Southern Coast, Newport Beach, Newport Back Bay, at top and bottom of a draw between 23rd St. and the Delhi Channel 5 Comment
  IRVC26743  Spiloxene ovata Mark A. Elvin, J. Liou, J. Carpenter, J. Nguyen 2004-3-8 3161 Orange UCI Arboretum Southern Coastal 15 Comment
  POM1127  Sporobolus airoides I. M. Johnston s.n. Orange Laguna Beach. Comment
  UCR236674  Sporobolus indicus Fred M. Roberts, Sandra L. Leatherman 2008-9-17 7106 Orange Peninsular Ranges, Santa Ana River Canyon: Yorba Linda Regional Park adjacent to Santa Ana River, South of La Palma Ave. and 1.7 km ENE Imperial Hwy. bridge over river 87 Comment
  RSA0028740  Sporobolus indicus R. E. Riefner Jr. 2004-12-12 4 -553 Orange City of Irvine, near Irvine Valley College, strawberry fields along Jeffrey Road near Irvine Center Drive. 37 Comment
  POM202025  Stachys ajugoides L. M. Booth 1932-6-4 1146 Orange Newport Lagoon. Comment
  RSA749695  Stachys ajugoides A. C. Sanders, Fred M. Roberts 2008-7-16 35830 Orange Lomas de Santiago, canyon c. 0.12 mi. below Dripping Spring, c. 7.5 mi. ESE of Tustin 360 Comment
  UC1618064  Stachys ajugoides Donald G. Nelson 1935-3-23 176 Orange hills n. Fullerton Comment
  UCR144124  Stachys rigida Scott D. White, Amanda Duchardt 2003-4-10 9001 Orange Santa Ana Mountians Foothills, Ridges and E-facing canyons above Trampas Canyon 152 Comment
  UCR261712  Stachys rigida subsp. quercetorum Dick Newell, Don Millar 2015-3-24 394 Orange South Coast, San Joaquin Hills, on Willow Canyon Trail 0.2 mi. west of Laguna Coast Wilderness Park entrance off Laguna Canyon Rd. 88 Comment
  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
  RSA0127596  Stachys rigida var. quercetorum Fred M. Roberts 2016-3-17 8026 Orange San Joaquin Hills: City of Irvine, west slope, Bommer Canyon along Turtle Ridge Trail, 0.8 km NE Signal Peak and 0.9 km SW Cattle Camp. 265 Comment
  UCR231347  Stachys stebbinsii A. C. Sanders, Kent Beaman 2011-9-27 39902 Orange Peninsular Range; Santa Ana Mtns., Maple Springs Truck Trail above Silverado, at major (dry) stream crossing, 3.95 km NNW (347 deg. ) of Santiago Peak 903 Comment
  IRVC371  Stellaria media A. S. Boughey 1965-3-16 74 Orange Silverado Canyon. Santa Ana Mountains Comment
  RSA528050  Stenotaphrum secundatum A. C. Sanders 1990-10-6 10191 Orange Newport Bay, North Star County Beach area on the SW end of the bay, ca. 2 km inland of Hwy 1 1 Comment
  SEINET10753606  Stenotaphrum secundatum Scott D. White, M. Carlton 2003-11-20 White 9867 Orange Santa Ana Mountain foothills: San Juan Creek in San Juan Capistrano. (Dana Point. T8S R7W S7). 24 Comment
  UCR17943  Stephanomeria cichoriacea L. Stuart 1974-1 s.n. Orange Peninsular Range; Santa Ana Mtns., Sitton Peak Road, c. 3 mi off Ortega Hwy 579 Comment
  POM122552  Stephanomeria diegensis Marcus E. Jones 1924-8-26 s.n. Orange Newport. Comment
  JEPS36875  Stephanomeria exigua subsp. coronaria L. M. Booth 1932-6-17 1205 Orange Bolsa Chica Comment
  POM201781  Stephanomeria exigua subsp. coronaria L. M. Booth 1932-7-27 1325 Orange Corona del Mar, Newport Beach, Bluff Ravine Comment
  POM186313  Stephanomeria exigua subsp. exigua Joseph A. Ewan 1932-6-28 7706 Orange Corona Del Mar Comment
  UC520303  Stephanomeria virgata subsp. pleurocarpa Joseph Andorfer Ewan 1932-7-28 7706 Orange Corona del Mar Comment
  UCR210366  Stephanomeria virgata subsp. virgata T. B. Salvato, Billy Deane 2006-10-16 1944 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  UC1564711  Styrax officinalis var. redivivus Reid Moran with Daniel Axelrod and Bob Smart 1975-7-18 22599 Orange n slope of ridge upper Trabuco Canyon (Santa Ana Mountains); , n slope of ridge, upper Trabuco Canyon 900 Comment
  UC217430  Suaeda calceoliformis H. M. Hall 1920-10-4 11221 Orange Cypress Comment
  UC971742  Suaeda calceoliformis L. M. Booth 1932-7-4 1251 Orange Newport Bay Comment
  POM259534  Suaeda calceoliformis A. C. Keller 1938-7-29 s.n. Orange At entrance to Lido Isle, Newport Comment
  POM202054  Suaeda moquinii L. M. Booth 1932-7-4 1247 Orange Newport Lagoon 3 Comment
  RSA438628  Suaeda moquinii Albert J. Perkins 1912-10-15 s.n. Orange Field near Newport Road, Santa Ana Comment
  CAS-BOT-BC110406  Suaeda taxifolia Allan C. Keller 1937-11-26 s.n. Orange Santa Ana River Bridge west of Newport Beach on U.S. Highway Alternate 101. Comment
  LA204738  Suaeda taxifolia Norman C. Cooper; 1942-11-9 883 Orange Balboa Comment
  POM693  Suaeda taxifolia L. T. Street 1917-5-12 s.n. Orange San Juan [Capistrano]. Comment
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Nov 19 2016
  RSA234501  Suaeda taxifolia James Henrickson 1970-7-25 5028 Orange 3.5 miles NW of Huntington Beach on sandy margin of Bolsa Bay, 1/4 mile SE of Warner Ave. along Pacific Coast Hwy. 0 Comment
  UC284809  Suaeda taxifolia P. A. Munz 1923-4-1 7320 Orange 2 mi nw Laguna (Laguna Beach); Laguna Beach Comment
  UCSB44182  Suaeda taxifolia Henneman, J. 1977-5-21 Orange Newport Back Bay 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
  UCSB48377  Suaeda taxifolia Roberts, Dar; Roberts, Fred 1982-4-19 Orange Newport Beach: Upper Newport Backbay, Backbay Br.; 0.8 km. N by road Jamboree Rd.; 2.1 km. E Newport Harbor High School Comment
  POM290485  Symphoricarpos mollis Lyman Benson 1947-4-27 12342 Orange Carbon Canyon. Chino-Puente Hills; Pacific Slope Drainage Area. 244 Comment
  UCR3182  Symphoricarpos mollis Chuck Elliott 1964-5-2 s.n. Orange Los Angeles Basin Region, Carbon Canyon 61 Comment
  UCSB52474  Symphoricarpos mollis Roberts, Fred 1983-1-19 Orange Laguna Beach; Park Canyon, west flank of Temple Hill, along Park Canyon Ave., 1.3 km. NE Thurston School; 1.7 km. SE bench mark 104 194 Comment
  RSA696192  Taraxacum officinale Keith E. Hoffmaster s.n. Orange Santa Ana Comment
  RSA221027  Tauschia arguta E. W. Lathrop 1966-3-23 6097 Orange 4 miles northeast of Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Comment
  RSA749430  Tauschia arguta Fred M. Roberts 2008-4-14 6894 Orange Santa Ana Mtns.: Upper Weir Cyn., east fork, 3.4 km E Robbers Peak, Irvine Ranch Conservancy. 433 Comment
  UC1618074  Tauschia arguta Donald G. Nelson 1935-7-6 242 Orange San Juan Canyon; near stream Comment
  UCR26996  Tauschia arguta E. W. Lathrop 1966-3-23 6097 Orange Santa Ana Mtns, Cleveland National Forest, Trabuco District. 4 mi. NE of Lake Irvine, Black Star Canyon Comment
  RSA0027781  Tauschia arguta R. F. Thorne, C. W. Tilforth, E. W. Lathrop 1977-4-27 49678 Orange Northern Santa Ana Mountains: Coal Canyon [NW of Sierra Peak]. 457 Comment
  RSA542416  Thalictrum fendleri Fred M. Roberts, Karlin G. Marsh 1987-5-14 3441 Orange Santa Ana Moutains: Upper Trabuco Canyon, Trabuco Canyon Trail , 1.3 km NE Los Pinos Peak 1231 Comment