Search Results — 1240 specimen records retrieved (969 records with coordinates)
Results for search: County=ORANGE; Source=All; Collector=Riefner;   

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC108544  Populus balsamifera R. E. Jr. Riefner 2006-4-8 06 -111 Orange South Coast: San Juan Capistrano (city), San Juan Creek at La Novia Ave. (San Juan Capistrano 7.5' Q.) 21 Comment
  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-BC226913  Plecostachys serpyllifolia R. E. Riefner, Jr. 2011-6-25 11 -73 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 6 Comment
  CAS-BOT-BC227211  Melinis repens R. E. Riefner, Jr. 2011-8-16 11 -98 Orange Newport Beach, Orange County Parks & Recreation lands, along Newport Coast Drive, between Vista Ridge Rd. & Alteza Rd. 280 Comment
  CAS-BOT-BC227250  Muhlenbergia microsperma R. E. Riefner, Jr. 2011-8-16 11 -99 Orange Newport Beach, Orange County Parks & Recreation lands, along Newport Coast Drive, between Vista Ridge Rd. & Alteza Rd. 280 Comment
  CAS-BOT-BC227846  Cyrtomium falcatum R. E. Riefner, 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
  CAS-BOT-BC227847  Melaleuca nesophila R. E. Riefner, Jr. 2011-7-1 11 -82 Orange City of Newport Beach, beach area west of the end of Cameo Shores Road; south ca. 1 mi from Poppy Avenue 1 Comment
  CAS-BOT-BC229009  Juglans hindsii R. E. Riefner, Jr. 2011-9-10 11 -124 Orange Santa Ana Canyon, I-91 northbound, S side of freeway, located within 100 ft of the Riverside County line 127 Comment
  CAS-BOT-BC229010  Oncosiphon piluliferum R. E. Riefner, Jr. 2011-5-20 11 -57 Orange Newport Beach, Coastal Peak Park, East Coastal Peak Rd. at Ridge Park Rd. 305 Comment
  CAS-BOT-BC229038  Geranium incanum var. multifidum R. E. Riefner, Jr. 2007-4-28 07 -189 Orange City of Newport Beach, Newport Bay, North Star Beach, vicinity of Morning Star Ln. 1 Comment
  CAS-BOT-BC229039  Plecostachys serpyllifolia R. E. Riefner, Jr. 2011-7-7 11 -88 Orange City of Dana Point, S of Mussel Cove, N of Salt Creek Beach Park 8 Comment
  CAS-BOT-BC248871  Atriplex amnicola R. E. Riefner, Jr. 2006-2-12 06 -21 Orange South Coast: N end of City of San Clemente, along N-bound I-5, immediately S of Camino de Estrella exit ramp 66 Comment
  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
  CAS-BOT-BC300530  Pseudognaphalium leucocephalum R. E. Riefner, Jr. 2011-10-19 11 -147 Orange City of San Juan Capistrano, San Juan Creek, ca. 0.2 mi W of intersection of Paseo Tirador and Calle Arroyo St. 31 Comment
  CAS-BOT-BC334207  Iva hayesiana R. E. Riefner, Jr. 2013-8-30 13 -206 Orange City of Huntington Beach, N of Pacific Coast Hwy along the Santa Ana River Trial, W side Santa Ana River 7 Comment
  CAS-BOT-BC334208  Juglans hindsii R. E. Riefner, Jr. 2013-11-6 13 -233 Orange City of Laguna Beach, Laguna Canyon, N of Phillips St. on E side of Laguna Canyon Rd. 71 Comment
  CAS-BOT-BC334497  Plecostachys serpyllifolia R. E. Riefner, Jr. 2008-7-9 08 -220 Orange City of Laguna Beach, bluff area W of West St. and Pacific Coast Highway 10 Comment
  CAS-BOT-BC334498  Arctotheca prostrata R. E. Riefner, Jr. 2013-7-6 13 -125 Orange City of Irvine, Irvine Valley College, Irvine Center Dr. near College St. 37 Comment
  CAS-BOT-BC334499  Bahiopsis laciniata R. E. Riefner, Jr. 2013-4-5 13 -56 Orange Anaheim Hills, vicinity Hidden Canyon Rd. at Avenue De Santiago 305 Comment
  CAS-BOT-BC334500  Juniperus rigida var. conferta R. E. Riefner, Jr. 2012-10-21 12 -521 Orange City of Newport Beach, Corona del Mar, ca 0.5 mi S from the intersection of Poppy Ave./ Ocean Blvd. at Little Corona Beach 12 Comment
  CAS-BOT-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
  CAS-BOT-BC353419  Paspalum vaginatum R. E. Riefner, Jr. 2013-12-12 13 -375 Orange City of Dana Point, near Ritz-Carlton Hotel, Salt Creek Beach area 2 Comment
  CAS-BOT-BC354027  Plagiobothrys acanthocarpus R. E. Riefner, Jr. 2013-3-17 13 -44 Orange City of Irvine, Jeffrey Trail, vicinity of Shady Canyon Dr. at Fossil Rd. 47 Comment
  CAS-BOT-BC354033  Plecostachys serpyllifolia R. E. Riefner, Jr. 2013-12-12 13 -377 Orange City of Dana Point, beach near Salt Creek, vicinity of Ritz Carlton Resort 2 Comment
  CAS-BOT-BC354305  Antirrhinum multiflorum R. E. Riefner, Jr. 2007-6-29 07 -286 Orange Irvine Ranch Reserve, North Irvine Ranch, East Fork of upper Fremont Canyon along Black Star SCE Rd. 594 Comment
  CAS-BOT-BC354307  Calandrinia breweri R. E. Riefner, Jr. 2008-3-5 08 -31 Orange Irvine Ranch Reserve, North Irvine Ranch, S of Windy Ridge Rd., ca 0.5 mi from West Fork of upper Fremont Canyon 508 Comment
  CAS-BOT-BC354308  Lagunaria patersonia R. E. Riefner, Jr. 2009-12-3 09 -247 Orange City of San Clemente, N of San Clemente Pier, along main beach trail vicinity of Buena Vista St at West Canada St. 7 Comment
  CAS-BOT-BC354338  Medicago truncatula R. E. Riefner, Jr. 2010-6-11 10 -62 Orange City of Fountain Valley, Southpark Ave. at Euclid St. 9 Comment
  CAS-BOT-BC354339  Juglans hindsii R. E. Riefner, Jr. 2010-9-8 10 -124 Orange City of Laguna Beach, Laguna Canyon, ca 0.25 mi S of Sun Valley Dr. on E side of Laguna Canyon Rd. 65 Comment
  CAS-BOT-BC354349  Pallenis maritima R. E. Riefner, Jr. 2013-1-16 13 -14 Orange City of Newport Beach, vicinity of Poppy Ave. and Ocean Blvd., coastal bluff at Little Corona Beach 7 Comment
  CAS-BOT-BC356094  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
  CAS-BOT-BC383061  Deinandra paniculata R. E. Riefner, Jr. 2014-7-10 14 -236 Orange City of Laguna Beach, Laguna Canyon, Laguna Coast Wilderness Park, Laurel Canyon Trail near Post-Marker C, SW ca. 0.1 mi from the intersection of Laguna Canyon Rd. and El Toro Rd. 75 Comment
  CAS-BOT-BC383062  Deinandra paniculata R. E. Riefner, Jr. 2008-5-19 08 -101 Orange Ladera Ranch, Cecil Pasture at Jerome Rd. 157 Comment
  CAS-BOT-BC383068  Juniperus rigida var. conferta R. E. Riefner, Jr. 2014-3-17 14 -72 Orange City of Newport Beach, beach area between Shorecliff Road and Cameo Shores Road 18 Comment
  CAS-BOT-BC383069  Lagunaria patersonia R. E. Riefner, Jr. 2014-6-6 14 -155 Orange City of Laguna Beach, W end of Heisler Park, vicinity of High Dr. and Cliff Dr. 9 Comment
  CAS-BOT-BC383071  Lycium brevipes R. E. Riefner, Jr. 2012-1-16 12 -7 Orange City of Newport Beach, Corona del Mar, Buck Gully, near LIttle Corona Beach, slope adjacent to restroom facility, vicinity of Poppy Ave. and Ocean Blvd. 15 Comment
  CAS-BOT-BC383072  Lycium brevipes var. hassei R. E. Riefner, Jr. 2014-4-12 14 -77 Orange City of San Clemente, San Clemente State Beach, SSW ca. 100 m from the intersection of Ave. Calafia and South Ola Vista Rd. 40 Comment
  CAS-BOT-BC383076  Quercus suber R. E. Riefner, Jr. 2005-4-15 05 -206 Orange City of Yorba Linda, Yorba Linda Regional Park along East La Palma Ave., W of Yorba Linda Blvd; Parking Lot #1 89 Comment
  CAS-BOT-BC389660  Panicum coloratum R. E. Riefner, Jr. 2014-7-6 14 -218 Orange City of Los Alamitos, along Los Alamitos Channel, E of 605 Fwy., N of Katella Ave., S of Coyote Creek, NE of Oak Academy Park, vicinity of Adobe Dr. and Acorn Ln. 11 Comment
  CAS-BOT-BC412802  Deinandra paniculata R. E. Riefner, Jr. 2013-8-16 13 -189 Orange City of Dana Point, canyon W side of Dana Hills High School, N of Stonehill Drive, E of Cortes Drive 86 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
  CAS-BOT-BC413809  Lycium brevipes R. E. Riefner, Jr. 2008-1-26 08 -10 Orange City of Newport Beach, Corona del Mar, Buck Gully, near Little Corona Beach, slope adjacent to restroom facility, vicinity of Poppy Ave. and Ocean Blvd. 15 Comment
  CAS-BOT-BC413810  Deinandra paniculata R. E. Riefner, Jr. 2014-7-5 14 -215 Orange City of San Clemente, San Clemente State Beach, SSW ca. 100 m from the intersection of Ave. Calafia and South Ola Vista Rd. 40 Comment
  CAS-BOT-BC413811  Lagunaria patersonia R. E. Riefner, Jr. 2014-6-25 14 -209 Orange City of Laguna Beach, Shaw's Cove, north of Cliff Dr. and Fairview St. 3 Comment
  CAS-BOT-BC413812  Euphorbia misera R. E. Riefner, Jr. 2013-11-15 13 -340 Orange City of Newport Beach, Inspiration Point, vicinity of Orchard St. and Ocean Blvd., NW of Little Corona Beach 7 Comment
  CAS-BOT-BC414241  Melaleuca viminalis R. E. Riefner, Jr. 2014-7-13 14 -242 Orange City of Seal Beach, N side of Westminster Blvd., ca. 0.2 mi W of Road B 5 Comment
  CAS-BOT-BC414242  Plecostachys serpyllifolia R. E. Riefner, Jr. 2007-4-28 07 -188 Orange City of Newport Beach, between Dover Beach and North Star Beach, W side of Polaris Dr., midway between Morning Star Ln. and Evening Star Ln. 6 Comment
  CAS-BOT-BC414243  Searsia lancea R. E. Riefner, Jr. 2014-11-21 14 -391 Orange City of Lake Forest, English Canyon, Aliso Creek, vicinity of Cherry Ave. and Fernbank Ave. 145 Comment
  CAS-BOT-BC414244  Paspalum vaginatum R. E. Riefner, Jr. 2014-1-14 14 -23 Orange City of Dana Point, Salt Creek Beach, Salt Creek Lagoon and eroding channel bank; W of Pacific Coast Highway and W of Monarch Beach Golf Course 1 Comment
  CAS-BOT-BC414245  Deinandra fasciculata R. E. Riefner, Jr. 2014-7-5 14 -216 Orange City of San Clemente, San Clemente State Beach, SSW ca. 100 m from the intersection of Ave. Calafia and South Ola Vista Rd. 40 Comment
  CAS-BOT-BC414246  Cyrtomium falcatum R. E. Riefner, Jr. 2014-6-25 14 -210 Orange City of Laguna Beach, Shaw's Cove, north of Cliff Dr. and Fairview St. 3 Comment
  CAS-BOT-BC414247  Ficus rubiginosa R. E. Riefner, Jr. 2011-8-25 11 -119 Orange City of Laguna Beach, Aliso Creek Park, rocky and bluff between Aliso Beach Park and West St. 7 Comment
  CAS-BOT-BC414248  Juglans hindsii R. E. Riefner, Jr. 2014-7-10 14 -240 Orange City of Laguna Beach, Laguna Canyon, Sun Valley Dr. along creek near Stan's Ln. 73 Comment
  CAS-BOT-BC438781  Populus trichocarpa R. E. Riefner, Jr. 2012-9-23 12 -512 Orange City of Yorba Linda, Santa Ana Canyon, N. side of Santa Ana River, La Palma Ave. at Via Del Rio Rd. 103 Comment
  CAS-BOT-BC438782  Ipomoea cairica R. E. Riefner, Jr. 2012-11-27 12 -563 Orange City of Laguna Beach, South Crescent Beach, Circle Way near Cliff Drive. 3 Comment
  CAS-BOT-BC438783  Suaeda esteroa R. E. Riefner, Jr. 2012-11-6 12 -533 Orange City of Newport Beach, Newport Bay, North Star Beach, near Newport Aquatic Center, White Cliffs Dr./ N. Star Ln. 2 Comment
  CAS-BOT-BC438784  Pallenis maritima R. E. Riefner, Jr. 2012-11-14 12 -551 Orange City of Newport Beach, S. of Poppy St. / Ocean Blvd., coastal bluff near Little Corona Beach rocky intertidal area. 5 Comment
  CAS-BOT-BC443959  Adiantum capillus-veneris R. E. Riefner, Jr. 2012-2-23 12 -43 Orange City of Laguna Beach, Treasure Island Beach, vicinity of Wesley Drive and South Coast Highway. 1 Comment
  CAS-BOT-BC443960  Bacopa monnieri R. E. Riefner, Jr. 2012-7-1 12 -295 Orange City of Mission Viejo, Oso Creek, ca. 1.3 mi N of Paseo De Colinas Ave. on Camino Capistrano Ave. 87 Comment
  CAS-BOT-BC445606  Echinodorus berteroi R. E. Riefner 2000-8-21 20 -728 Orange Santa Ana Mtns.: Irvine Lake [Santiago Reservoir], first cove east of the dam. 238 Comment
  CAS-BOT-BC465565  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. 80 Comment
  CAS-BOT-BC474715  Ficus rubiginosa R. E. Riefner, Jr. 2014-2-24 14 -65 Orange City of Dana Point, W ca. 0.1 mi from Island Way along Dana Point Harbor Dr., cliff slope immediately S of Santa Clara Ave. and Amber Lantern St. 11 Comment
  CAS-BOT-BC474723  Ficus microcarpa R. E. Riefner, Jr. 2014-6-14 14 -169 Orange City of Newport Beach, N side of Pacific Coast HIghway at Riverside Ave. 6 Comment
  CAS-BOT-BC474724  Ficus microcarpa R. E. Riefner, Jr. 2014-6-21 14 -186 Orange City of Laguna Beach, N side of North Coast Hwy near intersection with Cliff Dr. 10 Comment
  CAS-BOT-BC474727  Populus trichocarpa R. E. Riefner, Jr. 2014-11-21 14 -388 Orange City of Lake Forest, Aliso Creek, S 0.15 mi from Trabuco Rd. 145 Comment
  CAS-BOT-BC474734  Ficus microcarpa R. E. Riefner, Jr. 2015-8-27 15 -355 Orange City of Laguna Beach, S side of Beach St. E of Broadway Ave. (Hwy. 133) 7 Comment
  CAS-BOT-BC474735  Ficus rubiginosa R. E. Riefner, Jr. 2015-8-27 15 -356 Orange City of Laguna Beach, S side of Beach St. E of Broadway Ave (Hwy 133) 7 Comment
  CAS-BOT-BC474736  Ficus rubiginosa R. E. Riefner, Jr. 2015-8-27 15 -358 Orange City of Newport Beach, Corona del Mar, on Marguerite Ave. at Fifth Ave. 42 Comment
  CAS-BOT-BC474737  Ficus microcarpa R. E. Riefner, Jr. 2015-8-27 15 -359 Orange City of Newport Beach, Corona del Mar, on Marguerite Ave. between Fifth Ave.and Fourth Ave. 41 Comment
  CAS-BOT-BC474738  Ficus microcarpa R. E. Riefner, Jr. 2015-8-29 15 -368 Orange City of Rancho Santa Margarita, Trabuco Marketplace, Rancho Santa Margarita Blvd. at Plano Trabuco 363 Comment
  CAS-BOT-BC474739  Ficus rubiginosa R. E. Riefner, Jr. 2015-8-29 15 -369 Orange City of Rancho Santa Margarita, Trabuco Marketplace, Rancho Santa Margarita Blvd. at Plano Trabuco 363 Comment
  CAS-BOT-BC474740  Ficus carica R. E. Riefner, Jr. 2015-8-29 15 -370 Orange City of Rancho Santa Margarita, Trabuco Marketplace, Rancho Santa Margarita Blvd. at Plano Trabuco 363 Comment
  CAS-BOT-BC474742  Ficus carica R. E. Riefner, Jr. 2015-10-26 15 -423 Orange City of Laguna Beach, along Cliff Dr. at La Brea St. 24 Comment
  CAS-BOT-BC478169  Nephrolepis cordifolia R. E. Jr. Riefner 2014-6-14 14 -171 Orange City of Newport Beach, Cliff Drive Park, along Cliff Drive, near Beacon Street 44 Comment
  CAS-BOT-BC478170  Nephrolepis cordifolia R. E. Jr. Riefner 2014-6-14 14 -171 Orange City of Newport Beach, Cliff Drive Park, along Cliff Drive, near Beacon Street 44 Comment
  CAS-BOT-BC478171  Nephrolepis cordifolia R. E. Jr. Riefner 2014-7-27 14 -261 Orange City of Long Beach, N of E 2nd Street and W of Marine Stadium Park, Alamitos Bay, along docks on Bay Shore Ave. between Monroe Ave. and E. Vista Street 6 Comment
  CAS-BOT-BC487555  Ficus microcarpa R. E. Riefner, Jr. 2014-8-8 14 -273 Orange City of Laguna Beach, E side of South Coast Hwy near Diamond Street 25 Comment
  CAS-BOT-BC487556  Ficus microcarpa R. E. Riefner, Jr. 2014-2-24 14 -66 Orange City of Dana Point, W ca 0.1 mi from Island Way along Dana Point Harbor Dr., cliff immediately S of Santa Clara Ave. and Amber Lantern St. 11 Comment
  CAS-BOT-BC487557  Ficus microcarpa R. E. Riefner, Jr. 2014-11-26 14 -399 Orange City of Irvine, W of IrvineBlvd. and S of Pusan Way, former MCAS El Toro facility 138 Comment
  CAS-BOT-BC487558  Ficus microcarpa R. E. Riefner, Jr. 2014-7-13 14 -222 Orange City of Irvine, S side of Red Hill AVe. bridge E of 405 Freeway northbound lane 31 Comment
  CAS-BOT-BC487559  Quercus ilex R. E. Riefner, Jr. 2014-11-21 14 -393 Orange City of Lake Forest, English Canyon, Aliso Creek, S of Cherry Ave., end of 2nd St., Aliso Creek Bikeway 135 Comment
  CAS-BOT-BC500431  Ficus microcarpa R. E. Riefner, Jr. 2014-7-13 14 -222 Orange City of Irvine, S side of Red Hill Ave. bridge, E of 405 Freeway N-bound lane 31 Comment
  CAS-BOT-BC500432  Ficus microcarpa R. E. Riefner, Jr. 2015-7-18 15 -198 Orange City of Costa Mesa, Anton Blvd. on ramp to 405 Freeway, ca 0.3 mi from intersection of Bristol St. at Sunflower Ave. 11 Comment
  CAS-BOT-BC502065  Ficus rubiginosa R. E. Riefner, Jr. 2011-11-26 11 -161 Orange City of Laguna Beach, E side of Pacific Coast Hwy, N bank of Aliso Creek at Country Club Dr. 11 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
  CAS-BOT-BC502067  Chrysanthemoides monilifera R. E. Riefner, Jr. 2011-11-26 11 -162 Orange City of Laguna Beach, W side of Paific Coast Hwy, N bank of Aliso Creek next to residential garden 5 Comment
  CAS-BOT-BC502068  Chrysanthemoides monilifera R. E. Riefner, Jr. 2012-2-23 12 -44 Orange City of Laguna Beach, S of Goff Island, Montage Resort, Treasure Island Park, W of Pacific Coast Hwy 7 Comment
  CAS-BOT-BC502069  Pseudognaphalium leucocephalum R. E. Riefner, Jr. 2015-12-9 15 -459 Orange Rancho Mission Viejo, E of San Juan Capistrano, San Juan Creek, W of Antonio Pkwy, N side of Ortega Hwy (Hwy 74), near Sendero Field Park 55 Comment
  CAS-BOT-BC502070  Pseudognaphalium leucocephalum R. E. Riefner, Jr. 2015-12-9 15 -461 Orange Rancho Mission Viejo, E of San Juan Capistrano, San Juan Creek, W of Antonio Pkwy, N side of Ortega Hwy (Hwy 74), near bridge at Sendero Field Park 55 Comment
  CAS-BOT-BC502071  Ficus microcarpa R. E. Riefner, Jr. 2013-7-11 13 -139 Orange City of Laguna Beach, Heisler Park, near Recreation Point, SW of Cliff Cr. and Myrtle St. 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
  CAS-BOT-BC502073  Ficus microcarpa R. E. Riefner, Jr. 2015-8-27 15 -366 Orange City of Newport Beach, Corona del Mar, long Marguerite Ave., near Seaview Ave. 30 Comment
  CAS-BOT-BC502074  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -376 Orange City of Anaheim, Pearson Park, near center of park, N of North Helena St. and West Cypress St 45 Comment
  CAS-BOT-BC502075  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -379 Orange City of Anaheim, Pearson Park, SE section of park, N of N. Helena St. and W. Cypress St., near jct of N Lemon St. and W. Cypress T. 44 Comment
  CAS-BOT-BC502094  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -380 Orange City of Anaheim, Pearson Park, SE section of park, N of N. Helena St, and W. Cypress St., near jct. of N. Lemon St., and W. Cypress St. 44 Comment
  CAS-BOT-BC502095  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -381 Orange City of Anaheim, Pearson Park, SE section of park, N of N. Helena St, and W. Cypress St., near jct. of N. Lemon St., and W. Cypress St. 44 Comment
  CAS-BOT-BC502096  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -382 Orange City of Anaheim, Pearson Park, SE section of park, N of N. Helena St, and W. Cypress St., near jct. of N. Lemon St., and W. Cypress St. 44 Comment
  CAS-BOT-BC502097  Ficus microcarpa R. E. Riefner, Jr. 2015-8-30 15 -383 Orange City of Anaheim, Pearson Park, SE section of park, N of N. Helena St, and W. Cypress St., near jct. of N. Lemon St., and W. Cypress St. 44 Comment
  CAS-BOT-BC506646  Iris pseudacorus R. E. Riefner, Jr. 2015-4-24 15 -125 Orange Cit of Newport Beach, Upper Newport Bay, E or Irvine Ave., SSE of 23rd St and NNE of Santiago Dr., along main trail adjacent to willow scrub habitat 4 Comment
  CAS-BOT-BC506647  Cupaniopsis anacardioides R. E. Riefner, Jr. 2014-11-28 14 -407 Orange Cit of Newport Beach, SW corner Jamboree Rd. at MacArthur Blvd. 16 Comment
  CAS-BOT-BC506648  Psilotum nudum R. E. Riefner, Jr. 2015-8-27 15 -357 Orange Cit of Newport Beach, N side of North Coast Hwy, E side of La Brea St. 31 Comment
  CAS-BOT-BC516184  Lycium californicum R. E. Riefner, Jr. 2012-11-24 12 -558 Orange City of San Clemente, Presidio Ave., ca. 0.2 mi S of Ave. Pico 34 Comment
  CAS-BOT-BC516185  Juniperus rigida var. conferta R. E. Riefner, Jr. 2011-7-1 11 -81 Orange City of Newport Beach, between Shorecliff Road and Cameo Shores Road 18 Comment
  CAS-BOT-BC516762  Quercus suber R. E. Riefner, Jr. 2012-11-18 12 -555 Orange City of Irvine, San Joaquin Wildlife Sanctuary, South Loop Trail, N of San Diego Creek, W of Campus Drive 7 Comment
  CAS-BOT-BC516763  Lagunaria patersonia R. E. Riefner, Jr. 2011-6-29 11 -76 Orange City of Laguna Beach, general area of Shaw's Cove, vicinity of Cliff Dr. and Fairview St. 1 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
  CAS-BOT-BC520401  Centromadia parryi subsp. australis R. E. Riefner, Jr. 2014-8-28 14 -310 Orange City of Costa Mesa, TAlbert Regional Park, immediately W of Starfish Ct., E of the Santa Ana River 4 Comment
  CAS-BOT-BC533010  Nephrolepis cordifolia R. E. Riefner, Jr. 2016-5-24 16 -155 Orange City of Laguna Niguel, Alicia Pkwy S of Seabird Way 96 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
  CAS-BOT-BC538087  Cyrtomium falcatum R. E. Riefner, Jr. 2012-1-16 12 -5 Orange City of Newport Beach, Corona Del Mar, beach area W of Morning Canyon Rd 1 Comment
  CAS-BOT-BC538088  Cyrtomium falcatum R. E. Riefner, Jr. 2012-2-2 12 -19 Orange City of Dana Point, cliff and rocky intertidal area N 0.2 mi of Salt Creek lagoon 8 Comment
  CAS-BOT-BC538089  Juglans hindsii R. E. Riefner, Jr. 2015-11-21 15 -452 Orange City of Orange, Irvine Regional Park, SW end of Park, S of Peters Canyon Rd., general vicinity of the Orange Cunty Zoo 187 Comment
  CAS-BOT-BC538092  Cupaniopsis anacardioides R. E. Riefner, Jr. 2012-6-30 12 -286 Orange City of Costa Mesa, Talbert Regional Park, general vicinity of Balboa Blvd. and 19th St 5 Comment
  CAS-BOT-BC538093  Fraxinus uhdei R. E. Riefner, Jr. 2014-11-28 14 -408 Orange City of Newport Beach, SW corner Jamboree Rd. at MacArthur Blvd 16 Comment
  CAS-BOT-BC539350  Hypericum canariense R. E. Riefner, Jr. 2010-6-9 10 -56 Orange City of San Juan Capistrano, La Novio Ave. at Valle Rd. 45 Comment
  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
  CDA2117  Panicum coloratum R. E. Riefner Jr. 2004-9-3 04 -425 Orange City of Los Alamitos, Oak Middle School, vicinity of Oak Street at Catalina Street. Comment
  CDA2142  Panicum virgatum R. E. Riefner Jr. 2006-9-19 06 -439 Orange City of Anaheim. North side of Santa Ana River channel, Santa Ana Canyon, West (downstream) ca. 1.25 miles from Green River Golf Course. Comment
  CDA23128  Melaleuca nesophila R. E. Riefner Jr. 2007-6-9 07 -250 Orange City of San Juan Capistrano, south side of Antonio Parkway ca. 0.6 miles south of Covenant Hills Road. Comment
  CDA23141  Artemisia californica R. E. Riefner Jr. 2006-8-25 06 -410 Orange City of Dana Point, Salt Creek Beach Park, vicinity of Dana Strand Road and Selva Road. Comment
  CDA23142  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-3-21 07 -157 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek. Comment
  CDA23240  Atriplex canescens var. laciniata R. E. Riefner Jr. 2006-8-6 06 -377 Orange City of Newport Beach, Newport Bay, San Joaquin Road at Back Bay Drive. Comment
  CDA23267  Atriplex glauca R. E. Riefner Jr. 2005-12-13 05 -784 Orange Lake Forest; E side of SR-241, ca. 0.5 mi. N of Alton Pkwy. Comment
  CDA23271  Atriplex glauca R. E. Riefner Jr. 2006-3-19 Jun- 52 Orange Newport Beach; Avocado Ave. near San Nicolas Dr.; W of MacArthur Blvd. Comment
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Dec 13 2012
  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
  CDA2443  Setaria megaphylla R. E. Riefner Jr. 2007-8-4 07 -345 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek. 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
  CDA3168  Salsola australis R. E. Riefner Jr. 2007-1-2 16 -Jul Orange City of Lake Forest, along Bake Parkway at Dimension Road. Comment
  CDA5112  Callistemon viminalis R. E. Riefner Jr. 2007-4-1 07 -163 Orange City of Laguna Niguel, Oso Creek, ca 1.5 miles north from Paseo De Colinas Street on Camino Capistrano Street. Comment
  CDA5114  Callistemon viminalis R. E. Riefner Jr. 2007-3-18 07 -139 Orange City of Newport Beach, north shore of Newport Bay, North Star Beach, general vicinity of North Star Lane and Polaris Drive. Comment
  CDA5160  Eucalyptus erythrocorys R. E. Riefner Jr. 2007-9-27 07 -414 Orange City Laguna Niguel, along Forbes Road near Crown Valley Parkway; west of I-5 Freeway. 0 Comment
  CDA5356  Plecostachys serpyllifolia R. E. Riefner Jr. 2006-7-26 06 -319 Orange City of Irvine, along north side of Irvine Boulevard at SR 133 on-ramp. Comment
  CDA7064  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-4-28 07 -190 Orange City of Newport Beach, Dover Beach, vicinity of Morning Star Lane and Polaris Drive. Comment
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Dec 13 2012
  CHSC100702  Isocoma menziesii var. vernonioides R. E. Riefner Jr. 2004-9-18 04 -425 Orange City of Yorba Linda; Santa Ana River, Horseshoe Bend, near La Palma Rd. and Via Del Rio Rd. UTM 11S 0431519E 3749312N. NAD 83. 105 Comment
  CHSC101731  Salix lucida subsp. lasiandra R. E. Riefner Jr. 2008-5-20 08 -108 Orange Irvine Ranch Reserve, North Irvine Ranch, S Donaldson Ranch ca. 0.75 mi along W fork of upper Fremont Canyon. UTM: 11S 0436554E 3742750N. 404 Comment
  CHSC101739  Antirrhinum multiflorum R. E. Riefner Jr. 2008-7-21 08 -2248 Orange Irvine Ranch Reserve, North Irvine Ranch, middle Fremont Canyond, east slope along Black Star SCE Rd. UTM: 11S 0437874E 370552N. 717 Comment
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Dec 14 2012
  CHSC106005  Plecostachys serpyllifolia R. E. Riefner Jr. 2009-7-18 09 -151 Orange City of Dana Point, beach near Salt Creek, vicinity of Ritz Carlton Resort. UTM: 11S 0432734E 3704750N. 2 Comment
  CHSC106735  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-2-13 07 -55 Orange City of San Juan Capistrano, vicinity of La Novia Ave. and San Juan Creek. UTM: (NAD 83) 11S0439837E 3707224N. 31 Comment
  CHSC108388  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr. 2007-6-12 07 -253 Orange City of San Juan Capistrano, Vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek. UTM (NAD83) 11S 0440131E 3707502N. 34 Comment
  CHSC108408  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-2-13 07 -55 Orange City of San Juan Capistrano, vicinity of La Novia Ave. and San Juan Creek. 31 Comment
  CHSC108498  Artemisia californica R. E. Riefner Jr. 2006-8-25 06 -410 Orange City of Dana Point, Salt Creek Beach Park, vicinity of Dana Strand Rd. and Selva Rd. UTM:11S 0433601E 3702917N. 1 Comment
  CHSC109281  Calandrinia breweri R. E. Riefner Jr. 2008-5-20 08 -104 Orange Irvine Ranch Reserve, North Irvine Ranch, western Fremont Canyon, Windy Ridge Rd. UTM: 11S 0435915E. 530 Comment
  HSC101291  Atriplex amnicola R. E. Riefner, Jr. 2006-2-12 621 Orange South Coast: N end of City of San Clemente, along N-bound I-5, immediately S of Camino de Estrella exit ramp 66 Comment
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Feb 28 2016
  OBI74742  Paspalum vaginatum R. E. Riefner, Jr and K. Campbell, K. Campbell 2008-8-31 08 -267 Orange City of Irvine, tidal portion of San Diego crk, immediately E of Hwy 73 overpass 1 Comment
  OBI74913  Paspalum vaginatum R. E. Riefner, Jr. and K. Campbell, K. Campbell 2008-8-31 08 -267 Orange City of Irvine, tidal portion of San Diego crk, immediately E of Hwy 73 overpass 1 Comment
  OBI82297  Pallenis maritima R. E. Riefner 2011-7-1 11 -86 Orange City of Newport Beach, rocky beach between Shorecliff Rd. and Cameo Shores Rd. 2 Comment
  RSA0008326  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
  RSA0012667  Senecio californicus R. E. Riefner Jr. 2000-6-26 20 -583 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Canyon Road. 305 Comment
  RSA0024926  Pennisetum villosum R. E. Riefner Jr. 2013-2-11 13 -41 Orange City of Laguna Beach, vicinity of Pacific Coast Highway and Montage Resort Dr. 30 Comment
  RSA0024927  Juglans hindsii R. E. Riefner Jr. 2013-11-6 13 -234 Orange City of Laguna Beach, Laguna Canyon, N of Phillips St. on E side of Laguna Canyon Rd. 71 Comment
  RSA0024932  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2013-3-10 13 -39 Orange City of Lake Forest, along El Toro Rd. at Destry Rd. 211 Comment
  RSA0025114  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-7-9 08 -220 Orange City of Laguna Beach, bluff area W. of West St. and Pacific Coast Highway. 5 Comment
  RSA0025286  Juglans hindsii R. E. Riefner Jr. 2011-4-22 11 -34 Orange City of Laguna Beach, Laguna Canyon, Laguna Wilderness Park, Stagecoach Trail, ca. 0.15 mi N of El Toro Rd. on W side of Laguna Canyon Rd. 86 Comment
  RSA0025295  Arctotheca prostrata R. E. Riefner Jr. 2013-7-6 13 -125 Orange City of Irvine, Irvine Valley College, Irvine Center Dr. near College St. 37 Comment
  RSA0025299  Bahiopsis laciniata R. E. Riefner Jr. 2013-4-5 13 -56 Orange Anaheim Hills, vicinity of Hidden Canyon Rd. at Avenue de Santiago. 305 Comment
  RSA0025300  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
  RSA0028779  Atriplex glauca R. E. Riefner Jr. 2002-5-4 20 -87 Orange City of Dana Point, beach W of Pacific Coast Hwy. near mouth of Salt Creek. 15 Comment
  RSA0029993  Euphorbia misera R. E. Riefner Jr. 2013-1-16 13 -16 Orange City of Newport Beach, vicinity of Poppy Ave. and Ocean Blvd., coastal bluff at Little Corona Beach. 3 Comment
  RSA0029994  Dimorphotheca fruticosa R. E. Riefner Jr. 2011-7-1 11 -79 Orange City of Newport Beach, beach area W. of Shorecliff Road and Cameo Shores Road. 2 Comment
  RSA0035664  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr. 2012-9-23 12 -512 Orange city of Yorba Linda, Santa Ana Canyon, north side of Santa Ana River, La Palma Avenue at Via Del Rio Road 104 Comment
  RSA0035665  Bacopa monnieri R. E. Riefner Jr. 2012-7-1 12 -295 Orange city of Mission Viejo, Oso Creek, c. 1.3 mi north of Paseo de Colinas Ave. on Camino Capistrano Ave. 88 Comment
  RSA0035667  Suaeda esteroa R. E. Riefner Jr. 2012-11-6 12 -533 Orange city of Newport Beach, Newport Bay, North Star Beach, near Newport Aquatic Center, White Cliffs Drive/North Star Lane 2 Comment
  RSA0035853  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2012-5-5 12 -85 Orange city of San Clement, Antonio Parkway, c. 0.25 mi north of Hwy 74 88 Comment
  RSA0035855  Oncosiphon piluliferum R. E. Riefner Jr. 2012-4-22 12 -71 Orange city of Newport Beach, Newport Bay, Dover Shores, vicinity of West Wind Way and Santiago Drive 22 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
  RSA0038505  Ipomoea cairica R. E. Riefner Jr. 2012-11-27 12 -563 Orange city of laguna Beach, South Crescent Beach, Circle Way near Cliff Drive 3 Comment
  RSA0038506  Lycium californicum R. E. Riefner Jr. 2012-11-24 12 -558 Orange city of San Clemente, Presidio Ave. c. 0.2 mi south of Ave. Pico 34 Comment
  RSA0038507  Lagunaria patersonia R. E. Riefner Jr. 2011-6-29 11 -76 Orange city of Laguna Beach, general area of Shaw's Cove, vicinity of Cliff Drive and Fairview Street 1 Comment
  RSA0038510  Quercus suber R. E. Riefner Jr. 2012-11-18 12 -555 Orange city of Irvine, San Joaquin Wildlife Sanctuary, South Loop Trail, north of San Diego Creek, west of Campus Drive 8 Comment
  RSA0038511  Juniperus rigida var. conferta R. E. Riefner Jr. 2011-7-1 11 -81 Orange city of Newport Beach, beach area between Shorecliff Road and Cameo Shores Road 2 Comment
  RSA0038514  Pallenis maritima R. E. Riefner Jr. 2011-7-1 11 79 A Orange city of Laguna Beach, Aliso Creek Beach, rocky shore and bluff between Aliso Beach Park and West Street 4 Comment
  RSA0038515  Euphorbia misera R. E. Riefner Jr. 2012-10-16 12 -518 Orange city of Dana Point, Dana Point Harbor, 'Bluff Top Trail' located near Camino Capistrano and Violet Lantern Streets 35 Comment
  RSA0038516  Ehrharta erecta R. E. Riefner Jr. 2012-2-1 12 -15 Orange city of Dana Point, Dana Point Harbor, vicinity of Puerto Pl. and Dana Point Harbor Drive 2 Comment
  RSA0042742  Juniperus rigida var. conferta R. E. Riefner Jr. 2012-10-21 12 -521 Orange City of Newport Beach, Corona del Mar, ca. 0.5 mi S. from the intersection of Poppy Ave./ Ocean Blvd. at Little Corona Beach. 12 Comment
  RSA0042819  Adiantum capillus-veneris R. E. Riefner Jr. 2012-2-23 12 -43 Orange city of Laguna Beach, Treasure Island Beach, vicinity of Wesley Drive and South Coast Hwy 1 Comment
  RSA0044617  Deinandra paniculata Robert E. Riefner Jr. 2008-5-19 08 -100 Orange Ladera Ranch, Cecil Pasture at Jerome Rd. Along Bluff Top Trail. 157 Comment
  RSA0047638  Bloomeria crocea var. crocea R. E. Riefner Jr. 2014-5-13 14 -120 Orange City of San Clemente, Rancho San Clemente Trail, east c. 0.15 mi. from Ave. Salvador and south c. 0.1 mi. off Utility Access Rd. 239 Comment
  RSA0047639  Deinandra paniculata R. E. Riefner Jr. 2014-6-3 14 -143 Orange City of Laguna Beach, Moulton Meadows, NE 0.1 mi. from Del Mar Ave. and Balboa Ave. along Mentally Sensitive Trail 266 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
  RSA0050325  Juglans hindsii R. E. Riefner Jr. 2010-9-8 10 -121 Orange City of Laguna Beach, Laguna Canyon, c. 0.15 mi south of El Toro Road on east side of Laguna Canyon Road. 75 Comment
  RSA0060640  Nephrolepis cordifolia Richard E. Riefner 2014-6-14 14 -171 Orange City of Newport Beach, Cliff Drive Park, along Cliff Dr. near Beacon St. 44 Comment
  RSA0060642  Nephrolepis cordifolia Richard E. Riefner 2011-8-25 11 -120 Orange City of Laguna Beach, Aliso Beach County Park, bluff ca. 0.15 mi. SE of Aliso Way, NW ca. 0.25 mi. of West St. 10 Comment
  RSA0060643  Nephrolepis cordifolia Richard E. Riefner 2014-2-24 14 -64 Orange City of Dana Point, W ca. 0.1 mi from Island Way, Dana Point Harbor Dr., cliff slope immediately S of Santa Clara Ave. and Amber Lantern St. 3 Comment
  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
  RSA0088602  Psilotum nudum R. E. Riefner Jr. 2015-11-22 15 -453 Orange City of Costa Mesa, E side of Orange County Fairground, Lot #A-5, W of Newport Blvd. and N of Fair Drive. 32 Comment
  RSA0088634  Ficus microcarpa R. E. Riefner Jr. 2014-11-26 14 -399 Orange City of Irvine, W of Irvine Blvd. and S of Pusan Way, Former MCAS El Toro facility. 138 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
  RSA0088636  Ficus microcarpa R. E. Riefner Jr. 2014-8-8 14 -273 Orange City of Laguna Beach, E side of South Coast Highway near Diamond St. 25 Comment
  RSA0088637  Ficus microcarpa R. E. Riefner Jr. 2015-8-27 15 -359 Orange City of Newport Beach, Corona del Mar, on Marguerite Ave. between Fifth Ave. and Fourth Ave. 41 Comment
  RSA0089290  Ficus microcarpa R. E. Riefner Jr. 2014-2-24 14 -66 Orange City of Dana Point, W ca. 0.1 mi from Island Way along Dana Point Harbor Dr., cliff immediately S of Santa Clara Ave. and Amber Lantern St. 11 Comment
  RSA0105083  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-16 12 -5 Orange City of Newport Beach, Corona del Mar, beach area west of Morning Canyon Road. 1 Comment
  RSA0106893  Euphorbia misera R. E. Riefner Jr. 2012-12-5 12 -587 Orange City of Dana Point, Dana Point Harbor, Dana Harbor Drive, near Cove Road. 8 Comment
  RSA0106894  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10 -56 Orange City of San Juan Capistrano, La Novia Ave. at Valle Rd. 45 Comment
  RSA0106895  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-26 12 -11 Orange City of Laguna Beach, Aliso Creek Beach 2 Comment
  RSA0106896  Cyrtomium falcatum R. E. Riefner Jr. 2012-2-2 12 -19 Orange City of Dana Point, cliff and rocky intertidal zone, N 0.2 mi of Salt Creek Lagoon. 8 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
  RSA0116286  Ficus microcarpa R. E. Riefner Jr. 2015-8-30 15 -377 Orange City of Anaheim, Pearson Park, near center of park, N of North Helena St. and West Cypress St. 45 Comment
  RSA0116287  Ficus microcarpa R. E. Riefner Jr. 2015-8-30 15 -376 Orange City of Anaheim, Pearson Park, near center of park, N of North Helena St. and West Cypress St. 45 Comment
  RSA0116289  Ficus microcarpa R. E. Riefner Jr. 2014-7-13 14 -222 Orange City of Irvine, S side of Red Hill Ave. bridge E of 405 Freeway north-bound lane. 31 Comment
  RSA0116290  Ficus microcarpa R. E. Riefner Jr. 2014-7-14 14 -169 Orange City of Newport Beach, N side of Pacific Coast Highway at Riverside Ave. 6 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
  RSA0126885  Atriplex lindleyi Richard E. Riefner Jr. 2017-4-10 17 -162 Orange City of San Clemente, San Clemente State Beach, SW bluff area, W of Concordia Elementary School. 29 Comment
  RSA0126962  Matricaria discoidea R. E. Riefner 2017-4-10 17 -164 Orange City of San Clemente, San Clemente State Beach, SW area W of Concordia Elementary School. 32 Comment
  RSA0135563  Polypodium californicum R. E. Riefner 2017-3-31 17 -137 Orange City of San Clremente, San Clemente State Beach, NW bluff area immediately S of Ave. Calafia. 24 Comment
  RSA578028  Lycium brevipes var. hassei R. E. Riefner 1995-3-19 95 -77 Orange San Clemente State Beach Comment
  RSA581363  Eriogonum fasciculatum R. E. Riefner Jr. 1995-4-17 95 -67 Orange San Clemente State Beach, NW bluff. Comment
  RSA583212  Erodium brachycarpum R. E. Riefner Jr. 1998-4-17 95 -72 Orange San Clemente State Beach. Comment
  RSA583213  Psilocarphus brevissimus R. E. Riefner 1995-4-28 95 -106 Orange San Clemente State Beach. Comment
  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
  RSA585490  Lupinus arboreus var. arboreus R. E. Riefner 1994-5-22 94 -384 Orange San Mateo Unit, San Onofre State Beach, west of Pico Avenue. Comment
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Nov 19 2013
  RSA586251  Trifolium variegatum R. E. Riefner 1994-9-6 94 -551 Orange S bluff area of San Clemente Stat Beach Comment
  RSA587117  Senecio aphanactis R. E. Riefner 1994-3-28 94 -206 Orange San Clamente State Beach Comment
  RSA587118  Muilla maritima R. E. Riefner 1995-4-28 95 -110 Orange San Clemente State Beach. Comment
  RSA587119  Brodiaea jolonensis R. E. Riefner 1994-6-15 94 -253 Orange South bluffs, San Clemente State Beach. Comment
  RSA590720  Plantago elongata subsp. pentasperma R. E. Riefner 1994-4-22 94 -337 Orange S 1.5 miles from Moulton Meadows Park, Nyes' Place Ave, Laguna Beach. Comment
  RSA592062  Hordeum intercedens R. E. Riefner 1994-3-28 94 -207 Orange S bluffs area in mima terrain at San Clemete State Beach. Comment
  RSA592063  Hordeum intercedens R. E. Riefner 1996-5-19 96 -94 Orange NW of Cooks Reservoir, City of Dana Point, Dana Hills. Comment
  RSA592097  Monardella macrantha subsp. hallii R. E. Riefner Jr. 1993-6-28 93 -143 Orange W slope Modjeska Peak along main jeep trail. 1300 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
  RSA593863  Atriplex serenana R. E. Riefner 1995-4-17 95 -73 Orange San Clemente State Beach, in south bluff area. Comment
  RSA593869  Atriplex pacifica R. E. Riefner, CA Parks Service 1994-5-22 94 -377 Orange San Clemente State Beach, south bluffs Comment
  RSA593876  Cressa truxillensis R. E. Riefner 1995-4-28 95 -115 Orange San Clemente State Beach. Comment
  RSA599408  Psilocarphus tenellus R. E. Riefner 1997-4-15 97 -128 Orange San Clemente State Beach, south bluff area Comment
  RSA599428  Hemizonia australis R. E. Riefner 1996-7-28 96 -152 Orange San Diego Creek, at Campus Drive. Comment
  RSA602779  Nassella pulchra R. E. Riefner Jr., Tony Bomkamp, R. Ramirez 1997-6-11 97 -181 Orange Black Star Canyon, Hidden Ranch. 610 Comment
  RSA603291  Grindelia camporum R. E. Riefner 1997-7-12 97 -232 Orange San Clemente State Beach Comment
  RSA603299  Isocoma menziesii R. E. Riefner 1997-7-12 97 -234 Orange San Clemente State Beach Comment
  RSA626153  Navarretia prostrata R. E. Riefner 1998-5-15 98 -326 Orange San Clemente State Beach, SW end of park Comment
  RSA642702  Nolina cismontana R. E. Riefner 2000-3-19 20 -137 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and parallel to Black Star Cy. Road. 396 Comment
  RSA642703  Nolina cismontana R. E. Riefner 2000-3-19 20 -137 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and parallel to Black Star Cy. Road. 396 Comment
  RSA642704  Quercus berberidifolia R. E. Riefner Jr. 2000-3-18 20 -136 Orange Cleveland National Forest. Ridge-top E of Fremont Canyon and W of Hidden Valley. eastern part of Section 24. 732 Comment
  RSA642705  Quercus berberidifolia R. E. Riefner Jr. 2000-3-19 20 -144 Orange NCCP North Ranch Policy Plan Area. Main Divide Road; top of Gypsum Canyon, Windy Ridge. 518 Comment
  RSA643664  Nolina cismontana R. E. Riefner 2000-3-19 20 -137 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and parallel to Black Star Cy. Road. 396 Comment
  RSA644957  Quercus berberidifolia R. E. Riefner Jr. 2000-1 20 - Orange NCCP North Ranch Policy Plan Area. Main Divide Road; top of Gypsum Canyon Comment
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Nov 6 2011
  RSA644958  Populus balsamifera subsp. trichocarpa R. E. Riefner, Adrian Wolf 2000-1-24 20 -116 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N of Saniago Creek and immediately N. of major stream fork. 305 Comment
  RSA644959  Cupressus forbesii Richard E. Riefner 2000-1-18 20 -101 Orange NCCP North Ranch Policy Plan Area: Main Divide Road; top of Gypsum Canyon. 518 Comment
  RSA644960  Juncus effusus subsp. austrocalifornicus R. E. Riefner 2000-1-24 20 -109 Orange NCCP North Ranch Policy Plan Area: Fremont Canyon: N of Santiago Creek & immediately N. of major stream fork. 305 Comment
  RSA644961  Dudleya cymosa subsp. ovatifolia R. E. Riefner, Adrian Wolf 2000-1-24 20 -115 Orange NCCP North Ranch Policy Plan Area: Fremont Canyon: N of Santiago Creek & immediately N. of major stream fork. 305 Comment
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May 26 2016
  RSA644962  Ericameria cuneata var. cuneata R. E. Riefner, Adrian Wolf 2000-1-18 20 -104 Orange NCCP North Ranch Policy Plan Area. Upper drainage of Fremont Canyon: S. of Claymore Mine. 610 Comment
  RSA644963  Juncus textilis R. E. Riefner, Adrian Wolf 2000-1-24 20 -108 Orange NCCP North Ranch Policy Plan Area: Fremont Canyon: N of Santiago Creek & immediately N. of major stream fork. 305 Comment
  RSA644971  Quercus wislizeni var. frutescens R. E. Riefner Jr. 2000-4-13 2 -361 Orange NCCP North Ranch Policy Plan Area. Upper drainage of Fremont Canyon near National Forest boundary, S. of Claymore Mine. USGS 7.5' Quad: Black Star Canyon. 610 Comment
  RSA644972  Rhamnus tomentella subsp. cuspidata R. E. Riefner 2000-4-13 20 -360 Orange NCCP North Ranch Policy Plan Area. Upper drainage of Fremont Canyon near National Forest boundary, S. of Claymore Mine. USGS 7.5' Quad: Black Star Canyon. 610 Comment
  RSA644973  Pentachaeta aurea R. E. Riefner 2000-4-15 20 -380 Orange NCCP North Ranch Policy Plan Area. Main Divide Raod; S. of Gypsum Canyon and S of Windy Ridge. 518 Comment
  RSA644975  Poa secunda subsp. secunda R. E. Riefner 2000-4-15 20 -379 Orange NCCP North Ranch Policy Plan Area. Main Divide Raod; S. of Gypsum Canyon and S of Windy Ridge. 518 Comment
  RSA644977  Nolina cismontana R. E. Riefner 2000-4-15 20 -377 Orange Santa Ana Mtns. NCCP North Ranch Policy Plan Area. Along dirt road running N and parallel to Black Star Cy. Road. 396 Comment
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Jan 6 2018
  RSA644978  Panicum acuminatum var. acuminatum R. E. Riefner 2000-2-19 20 -117 Orange Santa Ana Mtns. NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek and immediately N. of major stream fork. 305 Comment
  RSA644979  Isolepis cernua R. E. Riefner 2000-2-19 20 -118 Orange Santa Ana Mtns. NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek and immediately N. of major stream fork. 305 Comment
  RSA644981  Pogogyne douglasii subsp. parviflora R. E. Riefner Jr. 2000-4-5 20 -211 Orange North Ranch Policy Plan Area, Main Divide Road, top of Gypsum Canyon, east of Windy Ridge. 518 Comment
  RSA648649  Cupressus forbesii Richard E. Riefner, Adrian Wolf 2000-6-1 20 -451 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 518 Comment
  RSA648650  Cupressus forbesii Richard E. Riefner 2000-8-3 20 -707 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road and Windy Ridge cypress forest. 534 Comment
  RSA648653  Echinodorus berteroi R. E. Riefner 2000-8-21 20 -728 Orange Irvine Lake. First cove SE of Dam. USGS 7.5' Quad: Black Star Canyon. 237 Comment
  RSA648654  Styrax redivivus R. E. Riefner 2000-3-26 20 -148 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  RSA648655  Nerium oleander R. E. Riefner 2000-8-23 20 -730 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek & immediately S. of major stream fork 305 Comment
  RSA648656  Crypsis schoenoides R. E. Riefner 2000-8-23 20 -731 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek & immediately S. of major stream fork 305 Comment
  RSA648659  Calamagrostis koelerioides R. E. Riefner 2000-6-22 20 -572 Orange NCCP North Ranch Policy Plan Area, NE property; along National Forest boundary, at powerline. 756 Comment
  RSA648660  Nolina cismontana R. E. Riefner 2000-7-8 20 -628 Orange NCCP North Ranch Policy Plan Area. On ridgeline overlooking upper W fork of Fremont Canyon; located E of Main Divide Road and SE from Windy Ridge cypress forest. 438 Comment
  RSA648664  Cupressus forbesii Richard E. Riefner 2000-8-3 20 -708 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road and E of Windy Ridge main cypress forest 542 Comment
  RSA649674  Lilium humboldtii subsp. ocellatum R. E. Riefner 2000-6-30 20 -594 Orange NCCP North Ranch Policy Plan Area. N Fremont Canyon at Donaldson Ranch adjacent to powerline crossing on W fork of Fremont Canyon drainage. 427 Comment
  RSA649675  Polygala cornuta var. fishiae R. E. Riefner 2000-6-13 20 -494 Orange North Ranch Policy Plan Area, N Fremont Canyon S of Donaldson Ranch, upper W fork of Fremont Canyon drainage 363 Comment
  RSA649676  Calamagrostis koelerioides R. E. Riefner 2000-6-26 20 -579 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and W of Black Star Canyon Road at powerline tower. 631 Comment
  RSA649677  Lepechinia cardiophylla R. E. Riefner Jr. 2000-8-3 20 -706 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road and Windy Ridge cypress forest. 535 Comment
  RSA649678  Dudleya multicaulis R. E. Riefner 2000-5-6 20 -407 Orange NCCP North Ranch Policy Plan Area: NE property; along powerline on National Forest boundary. 582 Comment
  RSA649679  Calycadenia tenella R. E. Riefner 2000-5-6 20 -444 Orange NCCP North Ranch Policy Plan Area: NE property; along powerline on National Forest boundary. 582 Comment
  RSA649680  Papaver californicum R. E. Riefner 2000-4-15 20 -375 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N, but W of Black Star Cyn. Road at powerline tower. 520 Comment
  RSA649681  Romneya coulteri R. E. Riefner 2000-7-6 20 -615 Orange NCCP North Ranch Policy Plan Area. NE property; along powerline SE of upper Fremont Cyn. 605 Comment
  RSA649682  Grindelia camporum var. bracteosa R. E. Riefner 2000-7-8 20 -626 Orange NCCP North Ranch Policy Plan Area. On ridgetop overlooking W fork of Fremont Cyn.; located E of Main Divide Road along the powerline. 394 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
  RSA649684  Rumex pulcher R. E. Riefner 2000-8-17 20 -725 Orange NCCP North Ranch Policy Plan Area. Silverado Creek near Forest Station. 328 Comment
  RSA649685  Dudleya cymosa subsp. pumila R. E. Riefner 2000-6-7 20 -447 Orange NCCP North Ranch Policy Plan Area. Upper drainage of Fremont Canyon along National Forest Boundary, at powerline. 609 Comment
  RSA649686  Calochortus plummerae R. E. Riefner 2000-7-8 20 -625 Orange NCCP North Ranch Policy Plan Area. On ridgeline overlooking upper W fork of Fremont Canyon; located E of Main Divide Road and SE from Windy Ridge cypress forest. 438 Comment
  RSA649687  Calochortus plummerae R. E. Riefner 2000-6-27 20 -585 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road and SE from Windy Ridge cypress forest. 556 Comment
  RSA649688  Opuntia R. E. Riefner 2000-8-23 20 -733 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek & immediately S. of major stream fork 305 Comment
  RSA649689  Bahiopsis laciniata R. E. Riefner 2000-7-2 20 -602 Orange NCCP North Ranch Policy Plan Area. Along Black Star Canyon Road and along Silverado Creek. Comment
  RSA649690  Quercus engelmannii R. E. Riefner Jr. 2000-6-1 20 -453 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  RSA649691  Quercus berberidifolia R. E. Riefner Jr. 2000-7-8 20 -627 Orange NCCP North Ranch Policy Plan Area. On ridgetop overlooking W fork of Fremont Cyn.; located E of Main Divide Road along the powerline. 395 Comment
  RSA653414  Baccharis malibuensis R. E. Riefner, A. Wolf 2000-8-23 20 -732 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek & immediately S. of major stream fork 305 Comment
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Jan 6 2018
  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
  RSA654972  Echinodorus berteroi R. E. Riefner 2000-8-21 20 -728 Orange Irvine Lake [Santiago Reservoir], first cove east of the dam 238 Comment
  RSA658138  Nolina cismontana R. E. Riefner 2000-7-6 20 -616 Orange NCCP North Ranch Policy Plan Area; NE property, along Nat l Forest Boundary, S of Claymore Mine Comment
  RSA660590  Isolepis carinata R. E. Riefner 2000-7-10 20 -641 Orange Nature Reserve of Orange County. Los Trancos Canyon, E of Pelican Hill. Comment
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Jul 18 2011
  RSA660591  Pellaea mucronata var. mucronata R. E. Riefner 2000-8-8 20 -719 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  RSA660592  Pellaea mucronata var. mucronata R. E. Riefner, Adrian Wolf 2000-6-1 20 -452 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. USGS 7.5' Quad: Black Star Canyon. 518 Comment
  RSA660594  Aristida purpurea var. parishii R. E. Riefner 2000-7-8 20 -629 Orange NCCP North Ranch Policy Plan Area. On ridgeline overlooking upper W fork of Fremont Canyon; located E of Main Divide Road and SE from Windy Ridge cypress forest. 438 Comment
  RSA660595  Phyla nodiflora R. E. Riefner 2000-8-17 20 -726 Orange NCCP North Ranch Policy Plan Area. Silverado Creek near Forest Station. 328 Comment
  RSA663153  Castilleja minor subsp. spiralis R. E. Riefner 2000-3-26 30 -154 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  RSA663154  Prunus ilicifolia R. E. Riefner 2000-6-1 20 -455 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  RSA663156  Melica imperfecta R. E. Riefner 2000-6-1 20 -460 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  RSA663157  Clematis lasiantha R. E. Riefner 2000-6-1 20 -455 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  RSA663159  Lonicera subspicata var. denudata R. E. Riefner 2000-6-1 20 -458 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  RSA663160  Ribes malvaceum var. viridifolium R. E. Riefner Jr. 2000-3-18 20 -133 Orange Cleveland National Forest. Ridge-top E of Fremont Canyon and W of Hidden Valley. eastern part of Section 24. 732 Comment
  RSA663162  Dendromecon rigida R. E. Riefner 2000-6-26 20 -578 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N and W of Black Star Canyon Road at powerline tower. 631 Comment
  RSA663163  Lamium amplexicaule R. E. Riefner Jr. 2000-6-26 20 -584 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Canyon Road. 305 Comment
  RSA663165  Dryopteris arguta R. E. Riefner 2000-3-26 20 -149 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  RSA663166  Populus trichocarpa R. E. Riefner 2000-3-26 20 -151 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  RSA663167  Holodiscus discolor R. E. Riefner 2000-6-22 20 -574 Orange NCCP North Ranch Policy Plan Area, NE property; along National Forest boundary, at powerline. 756 Comment
  RSA663201  Thysanocarpus laciniatus R. E. Riefner 2000-6-22 20 -576 Orange NCCP North Ranch Policy Plan Area, NE property; along National Forest boundary, at powerline. 756 Comment
  RSA663202  Juncus rugulosus R. E. Riefner 2000-3-26 20 -151 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  RSA663203  Muhlenbergia asperifolia R. E. Riefner 2000-3-26 20 -150 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  RSA663206  Aristida purpurea var. parishii R. E. Riefner 2000-8-21 20 -729 Orange NCCP North Ranch Policy Plan Area. Along dort road running S from Baker Canyon Road to Silverado Road. 335 Comment
  RSA663207  Aristida purpurea var. parishii R. E. Riefner 2000-8-3 20 -709 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road and Windy Ridge. 534 Comment
  RSA663208  Dudleya lanceolata R. E. Riefner 2000-6-1 20 -456 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  RSA663209  Trifolium willdenovii R. E. Riefner 2000-6-1 20 -459 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  RSA663210  Baccharis emoryi R. E. Riefner 2000-3-26 20 -153 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of major stream fork along W. channel drainage 335 Comment
  RSA663212  Umbellularia californica R. E. Riefner 2000-2-19 20 -119 Orange Santa Ana Mtns. NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek and immediately N. of major stream fork. 305 Comment
  RSA663274  Fraxinus dipetala R. E. Riefner Jr. 2000-2-19 20 -119 Orange Santa Ana Mtns. NCCP North Ranch Policy Plan Area. Fremont Canyon: N. of Santiago Creek and immediately N. of major stream fork. 305 Comment
  RSA663275  Tauschia arguta R. E. Riefner 2000-3-18 20 -135 Orange Cleveland National Forest. Ridge-top E of Fremont Canyon and W of Hidden Valley. eastern part of Section 24. 731 Comment
  RSA663276  Pedicularis densiflora R. E. Riefner 2000-3-18 20 -134 Orange Cleveland National Forest. Ridge-top E of Fremont Canyon and W of Hidden Valley. eastern part of Section 24. 732 Comment
  RSA663277  Calochortus weedii var. intermedius R. E. Riefner 2000-6-26 20 -581 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Canyon Road. 305 Comment
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Apr 19 2016
  RSA663278  Quercus berberidifolia R. E. Riefner Jr. 2000-1-18 20 -103 Orange NCCP North Ranch Policy Plan Area: Main Divide Road; top of Gypsum Canyon. 518 Comment
  RSA663279  Quercus berberidifolia R. E. Riefner Jr., Adrian Wolf 2000-6-1 20 -454 Orange NCCP North Ranch Policy Plan Area. N of Irvine Lake and W of Black Star Cyn; W. of dirt access rd. 473 Comment
  RSA663280  Quercus berberidifolia R. E. Riefner Jr. 2000-6-22 20 -572 Orange NCCP North Ranch Policy Plan Area, NE property; along National Forest boundary, at powerline. 756 Comment
  RSA663282  Lomatium vaginatum R. E. Riefner 2000-4-27 20 -392 Orange North Ranch Policy Plan Area, along dirt road running S from Baker Canyon Rd. to Silverado Rd. 335 Comment
  RSA671247  Atriplex R. E. Riefner 2002-5-4 20 -87 Orange City of Dana Point, beach west of Pacific Coast Hwy. near mouth of Salt Creek. 15 Comment
  RSA671248  Limonium ramosissimum R. E. Riefner 2002-5-4 20 -92 Orange Upper Newport Bay, Jamboree Rd at Bayview Dr. 15 Comment
  RSA689534  Limonium duriusculum R. E. Riefner 2002-5-4 20 -99 Orange Upper Newport Bay, Jamboree Rd at Bayview Dr. 15 Comment
  RSA689535  Nasturtium officinale R. E. Riefner 2002-5-4 20 -97 Orange Upper Newport Bay, Jamboree Rd at Bayview Dr. 15 Comment
  RSA689536  Frankenia salina R. E. Riefner Jr. 2002-5-4 20 -95 Orange Upper Newport Bay, Jamboree Rd at Bayview Dr. 15 Comment
  RSA689537  Pulicaria paludosa R. E. Riefner 2002-5-4 20 -93 Orange Upper Newport Bay, Jamboree Rd at Bayview Dr. 15 Comment
  RSA689540  Batis maritima R. E. Riefner 2003-8-17 3 -336 Orange Costa Mesa, Talbert Regional Park, Discovery Walk Road and Balboa Avenue. 12 Comment
  RSA689542  Descurainia pinnata subsp. halictorum R. E. Riefner 1999-5-22 99 -291 Orange City of Dana Point, beach west of Pacific Coast Hwy. South of Salt Creek near Ritz Carlton Hotel. USGS Quad: dana Point. 15 Comment
  RSA689544  Verbena bracteata R. E. Riefner 2000-8-21 20 -727 Orange Irvine Lake. First cove SE of Dam. 238 Comment
  RSA689545  Nasturtium officinale R. E. Riefner 2002-5-4 20 -98 Orange Upper Newport Bay, Jamboree Rd at Bayview Dr. 15 Comment
  RSA703196  Leptochloa fusca subsp. uninervia R. E. Riefner Jr. 2004-8-8 4 -373 Orange City of Anaheim, Santa Ana River bottom, E of 57 Freeway between Orangewood Street and Chapman Avenue. 41 Comment
  RSA703199  Deinandra paniculata R. E. Riefner Jr. 2004-7-6 04 -302 Orange Upper Chiquita Canyon, vicinity of Oso Pkwy. and SR-241. 224 Comment
  RSA703389  Suaeda taxifolia R. E. Riefner Jr. 2004-5-6 4 -171 Orange Newport Beach, north side of Pacific Coast Hwy., west of Bayside Drive near Newport Dunes Beach Club. 10 Comment
  RSA703457  Eragrostis R. E. Riefner Jr. 2004-8-27 4 -392 Orange City of Irvine, San Diego Creek at 405 freeway. 50 Comment
  RSA703645  Malacothrix saxatilis var. saxatilis R. E. Riefner Jr. 1999-8-21 99 -360 Orange Laguna Beach, west of Pacific Coast Hwy., vicinity of Aliso Creek Park and south to West Drive. 15 Comment
  RSA705543  Leersia oryzoides R. E. Riefner Jr. 2003-12-14 3 -458 Orange Featherly Regional Park, Santa Ana River, vicinity of La Palma Avenue and Lomas de Yorba West, S of Gypsum Canyon Road. 105 Comment
  RSA705547  Eleusine coracana subsp. africana R. E. Riefner Jr. 2004-8-28 4 -407 Orange City of Fountain Valley, along Newland Avenue at Edinger Street. 14 Comment
  RSA713567  Cyperus odoratus R. E. Riefner Jr. 2005-7-9 5 -551 Orange City of Huntington Beach, Huntington Central Park, Goldenwest St. near Slater Ave. 2 Comment
  RSA713906  Cupressus forbesii Richard E. Riefner 2005-4-15 5 -202 Orange Santa Ana Mountains, Gypsum Canyon, S end of Gypsum Canyon Rd., S of 91-Freeway. 160 Comment
  RSA713907  Callistemon citrinus R. E. Riefner Jr. 2005-11-23 5 -773 Orange City of Newport Beach, Upper Newport Bay, E of Jamboree Rd and S of Bayview Way at Bonita Creek channel. 6 Comment
  RSA714001  Lemna minuta R. E. Riefner 2005-10-27 5 -303 Orange City of Irvine; along Jeffrey Rd. N of Barranca Rd. near Irvine Valley College. 47 Comment
  RSA714396  Populus balsamifera subsp. trichocarpa R. E. Riefner 2006-4-8 6 -111 Orange South Coast: San Juan Capistrano (city), San Juan Creek at La Novia Ave. 22 Comment
  RSA714449  Malacothrix saxatilis var. saxatilis R. E. Riefner 1999-5-22 99 -289 Orange City of Dana Point, beach west of Pacific Coast Hwy. South of Salt Creek near Ritz Carlton Hotel. 15 Comment
  RSA714450  Malacothrix saxatilis var. saxatilis R. E. Riefner 2000-9-19 00 -739 Orange City of Dana Point, west of Pacific Coast Highway., vicinity of Salt Creek Park and Ritz Carlton Hotel. 0 Comment
  RSA715258  Plagiobothrys acanthocarpus R. E. Riefner 2006-4-12 6 -116 Orange Irvine, north foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Canyon Rd. 46 Comment
  RSA716344  Limonium ramosissimum R. E. Riefner 2006-8-11 6 -386 Orange Upper Newport Bay, E of Back Bay - Bayside Dr. flats along Big Canyon Creek. 5 Comment
  RSA722100  Artemisia californica R. E. Riefner 2006-8-25 06 -410 Orange City of Dana Point, Salt Creek Beach Park, vicinity of Dana Strand Rd. and Selva Rd. 0 Comment
  RSA722938  Gnaphalium leucocephalum R. E. Riefner 2007-3-21 07 -157 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek. Comment
  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
  RSA723478  Setaria megaphylla R. E. Riefner 2006-11-19 6 -683 Orange City of San Juan Capistrano, San Juan Creek at La Novia Ave. 22 Comment
  RSA723479  Eleusine coracana subsp. africana R. E. Riefner 2006-10-4 6 -477 Orange City of Huntington Beach, along Slater Ave. near Goldenwest St. 11 Comment
  RSA723480  Setaria megaphylla R. E. Riefner 2005-10-27 5 -731 Orange City of Huntington Beach, Huntington Central Park near Goldenwest St. 1 Comment
  RSA723481  Setaria megaphylla R. E. Riefner 2006-11-12 6 -667 Orange City of Newport Beach, urban creek draining into San Diego Creek at confluence with Newport Bay; San Diego Creek at SR-73 overpass. 6 Comment
  RSA723492  Eleusine coracana subsp. africana R. E. Riefner 2005-10-17 5 -724 Orange City of Los Alamitos, Arroyo Park, Heather St. at Lamson Ave. 10 Comment
  RSA723493  Eleusine coracana subsp. africana R. E. Riefner 2006-10-8 6 -474 Orange City of Irvine, San Diego Creek, between Alton Pwky. and 405 Fwy 51 Comment
  RSA723496  Eleusine coracana subsp. africana R. E. Riefner 2005-10-5 5 -718 Orange City of Yorba Linda, near Horseshoe Bend along the Santa Ana River. 102 Comment
  RSA723499  Limonium ramosissimum R. E. Riefner 2005-10-5 5 -708 Orange City of Irvine, Bonita Creek, along La Salud St. near Milano Dr. 9 Comment
  RSA723545  Limonium ramosissimum R. E. Riefner 2005-10-5 5 -708 Orange City of Irvine, Bonita Creek, along La Salud St. near Milano Dr. 9 Comment
  RSA723546  Limonium ramosissimum R. E. Riefner 2005-9-16 5 -667 Orange City of Newport Beach, E of Newport Bay and E of Bayside Dr. Big Canyon Creek drainage. 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
  RSA723548  Limonium ramosissimum R. E. Riefner 2006-8-13 6 -391 Orange Upper Newport Bay at Jamboree Rd. 9 Comment
  RSA723550  Limonium ramosissimum R. E. Riefner 2006-8-11 6 -386 Orange Upper Newport Bay, E of Back Bay - Bayside Dr. flats along Big Canyon Creek. 5 Comment
  RSA723965  Setaria megaphylla R. E. Riefner 2007-8-4 07 -345 Orange City of San Juan Capistrano, Vicinity o Calle Arroyo/Paseo Esteban at San Juan Creek. 21 Comment
  RSA723967  Secale cereale R. E. Riefner 2004-5-1 04 -154 Orange City of Irvine; Jeffrey Rd. near Bryan Rd. 73 Comment
  RSA723968  Pennisetum villosum R. E. Riefner 2005-9-20 05 -669 Orange City of San Clemente, along El Camino Read ca. 0.15 mi S of intersection with Los Molinos Rd. 35 Comment
  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
  RSA724037  Leersia oryzoides R. E. Riefner 2004-9-18 4 -425 Orange City of Yorba Linda; Santa Ana River, Horseshoe Bend, near La Palma Rd. and Via Del Rio Rd. 105 Comment
  RSA724059  Panicum virgatum R. E. Riefner 2006-10-8 6 -482 Orange City of Irvine, San Diego Creek near 405-Freeway. 49 Comment
  RSA724077  Panicum coloratum R. E. Riefner 2004-9-3 4 -425 Orange City of Los Alamitos, Oak Middle School, vicinity of Oak St. at Catalina St. 14 Comment
  RSA724100  Setaria adhaerens R. E. Riefner 2004-8-8 4 373 a Orange City of Anaheim, Santa River bottom near 57-Freeway between Orangewood St. and Chapman Ave. 41 Comment
  RSA724101  Setaria adhaerens R. E. Riefner 2006-8-6 6 -373 Orange City of Huntington Beach, Atlanta St. at Surge Ln. 11 Comment
  RSA724122  Panicum virgatum R. E. Riefner 2006-9-19 6 -439 Orange City of Anaheim, N side of Santa Ana River channel, Santa Ana Canyon, W (downstream) ca. 1.25 mi from Green River Golf Course. 118 Comment
  RSA724124  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2005-9-20 5 -674 Orange City of Huntington Beach, Huntington Central Park at Goldenwest St. 1 Comment
  RSA725790  Cotyledon orbiculata R. E. Riefner 2006-8-25 06 -407 Orange South Coast: Dana Point Harbor Dr. at Ensenada Pl. 13 Comment
  RSA725794  Cyrtomium falcatum R. E. Riefner 2006-9-5 06 -417 Orange Southern Coast: Corona del Mar, Ocean Blvd. Near Iris Ave. 11 Comment
  RSA725795  Populus trichocarpa R. E. Riefner 2006-9-16 06 -434 Orange Yorba Linda, north of Chapman Ave. c. 1 mile along floodplain of Santa Ana River. 98 Comment
  RSA725933  Pennisetum villosum R. E. Riefner 2003-11-30 3 -486 Orange South Coast: Santa Ana, 55 Freeway near Brookhollow St. 32 Comment
  RSA725937  Lotus scoparius var. scoparius R. E. Riefner 2006-7-2 06 -277 Orange Costa Mesa, St. Route 73 at 55 Freeway interchange 20 Comment
  RSA725942  Koelreuteria bipinnata R. E. Riefner 2006-11-14 6 -673 Orange South Coast: Irvine, along San Diego Creek at Campus Ave. 4 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
  RSA725963  Chenopodium album R. E. Riefner 2006-10-8 06 -484 Orange South Coast: Irvine, San Diego Creek near 405 Freeway, between 405 and Laguna Rd. 51 Comment
  RSA725964  Cyperus odoratus R. E. Riefner 2005-10-27 05 -728 Orange South Coast: Huntington Beach, Huntington Central Park near Goldenwest St. 1 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
  RSA725966  Salix lucida subsp. lasiandra R. E. Riefner 2006-10-4 06 -475 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lake Forest, Aliso Creek near Portola Parkway at El Toro Rd. 225 Comment
  RSA727266  Opuntia dejecta R. E. Riefner 2006-7-23 06 -312 Orange South Coast: Newport Beach (city), north shore of Upper Newport Bay, west c. 0.25 mi. from intersection of Bayview Way and Bayview Place 11 Comment
  RSA727606  Abutilon palmeri R. E. Riefner Jr. 2006-9-5 06 -418 Orange Southern Coast: Corona del Mar, Ocean Blvd. Near Iris Ave. 11 Comment
  RSA728655  Setaria adhaerens R. E. Riefner 2006-7-23 6 -310 Orange City of Santa Ana, 17th st. at 55 Hwy. 49 Comment
  RSA728661  Sagina saginoides R. E. Riefner 2003-2-22 03 -124 Orange City of Laguna Beach, Moulton Meadows Park, near Balboa Ave., and Del Mar Ave. Mima Mound Terrain habitat. 261 Comment
  RSA728662  Hordeum brachyantherum R. E. Riefner 2002-5-4 2 -101 Orange City of Laguna Beach, Moulton Meadows Park, near Balboa Ave., and Del Mar Ave. 254 Comment
  RSA728663  Setaria adhaerens R. E. Riefner 2006-10-8 6 -480 Orange City of Irvine, San Diego Creek, between Alton Pwky. and 405 Fwy 51 Comment
  RSA728664  Setaria adhaerens R. E. Riefner 2004-8-27 4 -389 Orange City of Irvine; San Diego Creek at Woodbridge High School, S of intersection of Barranca Rd. and West Yale Loop Rd. 27 Comment
  RSA728669  Agave attenuata R. E. Riefner 2007-2-18 07 -67 Orange City of Rancho Santa Margarita, Tijeras Canyon, N ca. 0.5 mi from Meandering Trails Rd. on Antonio Pwky. 221 Comment
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Feb 28 2016
  RSA731536  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2007-9-30 7 -417 Orange City of Yorba Linda, N floodplain of Santa Ana River near Yorba Linda Regional Park. 98 Comment
  RSA731537  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2007-9-14 7 -395 Orange City of Anaheim, Santa Ana River bottom near 57-Freeway between Orangewood St. and Chapman Ave. 41 Comment
  RSA731538  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2007-9-30 7 -416 Orange City of Yorba Linda, Santa Ana Canyon, La Palma Ave. at Via Lomas De Yorba East. 110 Comment
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Dec 21 2011
  RSA731540  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2005-9-20 5 -675 Orange City of Huntington Beach, Huntington Central Park at Goldenwest St. 1 Comment
  RSA733048  Paspalum vaginatum R. E. Riefner 2005-7-9 05 -543 Orange City of Mision Viejo, Oso Creek, ca. 0.5 mi N of Paseo de Colinas on Camino Capistrano 86 Comment
  RSA733049  Paspalum vaginatum R. E. Riefner 2007-10-26 07 -452 Orange City of Laguna Niguel, laguna Niguel Regional Park, vivinity of La Paz Rd. at Aliso Creek. 64 Comment
  RSA733050  Paspalum vaginatum R. E. Riefner 2003-10-17 03 -456 Orange City of San Juan Capistano, Trabuco Creek, S side of Del Obispo St. at Paseo Adelento St. 26 Comment
  RSA733052  Paspalum vaginatum R. E. Riefner 2003-10-14 03 -455 Orange City of San Juan Capistrano, Trabuco Creek, N side of Del Obispo St. at paseo Adelento St. 27 Comment
  RSA733053  Paspalum vaginatum R. E. Riefner 2005-7-9 05 -545 Orange City of Mision Viejo, Oso Creek, ca. 1.4 mi of Paseo de Colinas on Camino Capistrano. 86 Comment
  RSA733054  Paspalum vaginatum R. E. Riefner 2007-7-8 07 -304 Orange City of Laguna Niguel, Aliso Creek, Alica Pwky. at Park Way. 46 Comment
  RSA733055  Paspalum vaginatum R. E. Riefner 2007-10-26 07 -459 Orange City of Laguna Niguel, vicinity of La Paz Rd. at Kings Rd. 64 Comment
  RSA733056  Paspalum vaginatum R. E. Riefner 2008-1-13 41855 Orange City of Laguna Beach, Aliso Creek at Pacific Coast Hwy. 9 Comment
  RSA733137  Paspalum vaginatum R. E. Riefner 2008-1-13 8 -9 Orange City of Newport Beach, San Diego Creek near Hwy. 73 overpass, E of Jamboree Rd. 6 Comment
  RSA733138  Paspalum vaginatum R. E. Riefner 2007-10-17 7 -439 Orange City of Dana Point, Dana Point Harbor, Dana Point Harbor Dr. near Puerto Pl. 10 Comment
  RSA733139  Paspalum vaginatum R. E. Riefner 2007-10-17 7 -437 Orange City of Dana Point, Dana Point Harbor, Dana Point Harbor Dr. near Park Lantern Dr. 4 Comment
  RSA733140  Paspalum vaginatum R. E. Riefner 2007-10-17 7 -436 Orange City of Dana Point, Doheny State Beach, W side of San Juan Creek Lagoon. 6 Comment
  RSA733141  Paspalum vaginatum R. E. Riefner 2007-10-17 7 -437 Orange City of Dana Point, Doheny State Beach, E side of San Juan Creek Lagoon. 4 Comment
  RSA733142  Paspalum vaginatum R. E. Riefner 2007-7-23 7 -314 Orange City of Newport Beach, E of Jamboree Rd. at Bayiew Way, San Diego Creek confluence with Newport Bay. Comment
  RSA733143  Paspalum vaginatum R. E. Riefner 2007-10-26 7 -461 Orange City of Newport Beach, North Star Beach, north shore of Newport Bay near North Star Ln. 9 Comment
  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
  RSA735119  Eleusine coracana subsp. africana R. E. Riefner 2006-10-8 6 -474 Orange City of Irvine, San Diego Creek, between Alton Pwky. and 405 Fwy 51 Comment
  RSA735121  Eleusine coracana subsp. africana R. E. Riefner 2006-11-15 6 -677 Orange City of Irvine, Shady Canyon Rd. at Quail Hill. 35 Comment
  RSA735122  Eleusine coracana subsp. africana R. E. Riefner 2006-10-4 6 -477 Orange City of Huntington Beach, along Slater Ave. near Goldenwest St. 11 Comment
  RSA735124  Eleusine coracana subsp. africana R. E. Riefner 2005-10-5 5 -718 Orange City of Yorba Linda, near Horseshoe Bend along the Santa Ana River. 102 Comment
  RSA735128  Eleusine coracana subsp. africana R. E. Riefner 2005-10-17 5 -724 Orange City of Los Alamitos, Arroyo Park, Heather St. at Lamson Ave. 10 Comment
  RSA737234  Calandrinia breweri R. E. Riefner 2008-3-12 08 -34 Orange Irvine Ranch Reserve, North Irvine Ranch, East Fork of upper Fremont Canyon along Black Star SCE Rd. 716 Comment
  RSA737237  Pseudognaphalium leucocephalum R. E. Riefner 2007-9-11 07 -379 Orange City of San Juan Capistrano, vicinity of San Juan Creek road and Paseo Christina. 34 Comment
  RSA737239  Paspalum virgatum R. E. Riefner 2008-7-29 08 -256 Orange City of Dana Point, Salt Creek Beach, Near Ritz Carlton Hotel 0 Comment
  RSA737240  Paspalum virgatum R. E. Riefner, K. Campbell 2008-8-31 08 -267 Orange Orange County: city of Irvine, San Diego Creek, E side of Hwy 73 overpass, alt 2ft. 1 Comment
  RSA737377  Atriplex amnicola R. E. Riefner 2005-9-9 05 -658 Orange City of Dana Point, beach W of Pacific Coast Hwy and S of Salt Creek near Ritz Carlton Hotel. 8 Comment
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Jul 22 2018
  RSA737890  Antirrhinum multiflorum R. E. Riefner 2008-5-15 09 -83 Orange Irvine Ranch Reseve, N Irvine Ranch, E Fork cliffs at upper Fremont Canyon along Black Star SCE road. 610 Comment
  RSA737891  Antirrhinum multiflorum R. E. Riefner 2008-6-3 08 -139 Orange Irvine Ranch Reseve, N Irvine Ranch, E Fork cliffs at upper Fremont Canyon along Black Star SCE road. Irvine Ranch Reseve, N Irvine Ranch, E Fork cliffs at upper Fremont Canyon along Black Star SCE road. 618 Comment
  RSA737892  Antirrhinum multiflorum R. E. Riefner 2008-7-21 08 -248 Orange Irvine Ranch Reseve, N Irvine Ranch, middle Fremont Canyon, E slope along Black Star SCE road. 718 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
  RSA737897  Calandrinia breweri R. E. Riefner 2008-5-20 08 -104 Orange Irvine Ranch Reserve, N Irvine Ranch, Wetern Fremont Canyon, Windy Ridge Road. 531 Comment
  RSA737898  Antirrhinum multiflorum R. E. Riefner 2008-6-17 08 -159 Orange Irvine Ranch Reserve, N Irvine Ranch, Middle Fremont Canyon along Black Star SCE road. 618 Comment
  RSA739270  Callistemon viminalis R. E. Riefner Jr. 2007-4-1 7 -163 Orange City of Laguna Niguel, Oso Creek, ca. 1.5 miles north from Paseo De Colinas Street on Camino Capistrano Street. 88 Comment
  RSA739276  Cyrtomium falcatum R. E. Riefner 2009-1-3 83 Orange Orange County: city of Newport Beach, N Star Beach, vicinity of N Star Ln and White Cliffs Dr. 4 Comment
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Dec 20 2012
  RSA739277  Adiantum capillus-veneris R. E. Riefner 2008-7-9 08 -218 Orange Orange County: City of Laguna Beach, bluff area W of W St. and Pacific Coast Hwy. 6 Comment
  RSA739279  Adiantum capillus-veneris R. E. Riefner 2008-7-9 08 -228 Orange Orange County: city of Newport Beach, N Star Beach, vicinity of N Star Ln and White Cliffs Dr. 4 Comment
  RSA741481  Asphodelus fistulosus R. E. Riefner 2008-5-30 08 -125 Orange Near City of Orange, Santiago Creek, vicinity of Jackson Ranch Rd. at Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
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Feb 28 2016
  RSA741482  Calochortus catalinae R. E. Riefner 2008-4-20 8 -66 Orange On Loma Ridge, near city of Irvine, E side of Hicks Haul Rd., Irvine Ranch Reserve, Management Area 11. Comment
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Feb 2 2011
  RSA741483  Calochortus weedii var. weedii R. E. Riefner 2008-6-5 8 -145 Orange Near City of Orange, W side of Hicks Haul Rd., Rattlesnake Cyn., SW of the asphalt plant, Irvine Ranch Reserve, Management Area 6. Comment
  RSA741703  Pseudotsuga macrocarpa Richard E. Riefner Jr. 2008-6-3 08 -134 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 646 Comment
  RSA741725  Calochortus weedii var. intermedius R. E. Riefner 2008-6-3 8 -138 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 622 Comment
  RSA741726  Calochortus weedii var. intermedius R. E. Riefner 2008-6-11 8 -150 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fremont Canyon, Coalmine SCE Rd. 366 Comment
  RSA741727  Calochortus catalinae R. E. Riefner 2008-4-15 8 -71 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fremont Canyon, lower Coalmine SCE Rd. 301 Comment
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Jul 2 2014
  RSA743554  Eleusine coracana subsp. africana R. E. Riefner 2005-9-20 5 -671 Orange City of San Clemente, along El Camino Read ca. 0.15 mi S of intersection with Los Molinos Rd. 35 Comment
  RSA743555  Eleusine coracana subsp. africana R. E. Riefner 2004-8-28 4 -407 Orange City of Fountain Valley, Newland Ave. at Edinger St. 14 Comment
  RSA746523  Calochortus weedii var. intermedius R. E. Riefner 2008-6-3 8 -141 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 641 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
  RSA746535  Nolina cismontana R. E. Riefner 2007-6-14 7 -256 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fork Fremont Canyon, Donaldson Ranch Area. 381 Comment
  RSA746536  Calochortus weedii var. intermedius R. E. Riefner 2008-6-5 8 -146 Orange Near City of Orange, W side of Hicks Haul Rd., Rattlesnake Cyn., SW of the asphalt plant, Irvine Ranch Reserve, Management Area 6 Comment
  RSA751396  Salvinia minima Rick E. Riefner Jr. 2008-7-9 8 -219 Orange City of Laguna Beach, bluff area W of West St. and Pacific Coast Highway. 4 Comment
  RSA752214  Atriplex glauca R. E. Riefner Jr. 2002-5-4 02 -87 Orange City of Dana Point, beach W of Pacific Coast Hwy. near mouth of Salt Creek. 15 Comment
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Feb 28 2016
  RSA752215  Atriplex amnicola R. E. Riefner Jr. 2002-5-4 02 -91 Orange Upper Newport Bay, Jamboree Rd. and Bayview Dr. 15 Comment
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Feb 28 2016
  RSA765876  Paspalum distichum R. E. Riefner Jr. 2005-7-9 05 -544 Orange City of Mission Viejo, Oso Creek, ca. 0.5 mi N of Paseo De Colinas on Camino Capistrano. 86 Comment
  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
  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
  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
  RSA766069  Paspalum pubiflorum R. E. Riefner Jr. 2007-9-30 07 -419 Orange City of Yorba Linda, Santa Ana Canyon, N bank of Santa Ana River, vicinity of La Palma Ave. and Via Lomas De Yorba East. 110 Comment
  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
  RSA769299  Paspalum vaginatum R. E. Riefner Jr., K. Campbell 2008-8-31 80 -267 Orange City of Irvine, tidal portion of San Diego Creek, Immediately east of Hwy. 73 overpass. 1 Comment
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Dec 14 2012
  RSA769300  Paspalum vaginatum R. E. Riefner Jr. 2009-1-2 41892 Orange City of Newport Beach, Upper Newport Bay, Delhi Channel near University Dr. 0 Comment
  RSA769302  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10 -52 Orange City of San Juan Capistrano, along McKraken View Trail at San Juan Creek Rd., E of I-5 Freeway. 51 Comment
  RSA779934  Brodiaea filifolia R. E. Riefner Jr. 2011-5-20 20760 Orange Newport Beach, Coastal Peak Park, East Coastal Peak Road at Ridge Park Road 305 Comment
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Dec 7 2014
  RSA785389  Cyrtomium falcatum R. E. Riefner 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 Ave. 2 Comment
  RSA785574  Melaleuca nesophila R. E. Riefner Jr., Cindy Hopkins 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 Ave. 2 Comment
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Dec 20 2012
  RSA790096  Muhlenbergia microsperma R. E. Riefner Jr. 2011-8-16 11 -99 Orange Newport Beach, Orange County Parks and Recreation lands, along Newport Coast Drive, between Vista Ridge Rd. & Alteza Rd. 281 Comment
  RSA791739  Melinis repens R. E. Riefner Jr. 2011-8-16 36100 Orange Newport Beach, Orange County Parks and Recreation lands, along Newport Coast Drive, between Vista Ridge Rd. & Alteza Rd. 281 Comment
  RSA791808  Marsilea drummondii R. E. Riefner Jr. 2007-9-30 7 -415 Orange City of Yorba Linda, Santa Ana Canyon, urban runoff tributary to Santa Ana River, La Palma Ave. at Via Lomas De Yorba East. 110 Comment
  RSA797013  Pallenis maritima R. E. Riefner Jr. 2011-6-25 11 -74 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 2 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
  RSA797015  Pallenis maritima R. E. Riefner Jr. 2010-1-2 10 -3 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 2 Comment
  RSA797016  Pallenis maritima R. E. Riefner Jr. 2011-7-1 11 -86 Orange City of Newport Beach, rocky beach between Shorecliff Road and Cameo Shores Road. 1 Comment
  RSA797017  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-30 12 -285 Orange City of Costa Mesa, Talbert Regional Park, general vicinity of Balboa Boulevard and 19th Street. 5 Comment
  RSA797023  Geranium incanum var. multifidum R. E. Riefner Jr. 2011-7-1 11 -78 Orange City of Laguna Beach, South Crescent Bay, vicinity of Circle Drive and Island Way. 5 Comment
  RSA797025  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-16 12 -404 Orange City of Dana Point, Dana Point Harbor Drive at Island Way. 11 Comment
  SBBG119215  Sporobolus indicus R. E. Riefner 2004-12-12 04 -553 Orange Jeffrey Rd near Irvine Center Drive, City of Irvine 36 Comment
  SBBG120621  Plagiobothrys acanthocarpus R. E. Riefner 2006-4-12 06 -116 Orange Irvine, N foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Cyn Rd 46 Comment
  SBBG122002  Atriplex amnicola R. E. Riefner 2006-2-12 06 -21 Orange Interstate 5, immediately S of Camino de Estrella exit ramp, N end of San Clemente 66 Comment
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Dec 13 2012
  SBBG125947  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10 -52 Orange McKraken View Trail at San Juan Crk Rd, E of I-5 Freeway; City of San Juan Capistrano 51 Comment
  SBBG125948  Paspalum vaginatum R. E. Riefner Jr., K. Campbell 2008-8-31 08 -267 Orange tidal portion of San Diego Crk, immediately E of Hwy 73 overpass; City of Irvine 1 Comment
  SBBG126057  Plecostachys serpyllifolia R. E. Riefner Jr. 2009-7-18 09 -151 Orange beach near Salt Crk, vicinity of Ritz Carlton Resort; City of Dana Point 2 Comment
  SBBG126059  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08 -312 Orange vicinity of W St and Pacific Coast Hwy; City of Laguna Beach 4 Comment
  SBBG126060  Plecostachys serpyllifolia R. E. Riefner Jr. 2006-7-26 06 -319 Orange N side of Irvine Blvd at SR-133 on-ramp; City of Irvine 64 Comment
  SBBG126061  Plecostachys serpyllifolia R. E. Riefner Jr. 2004-12-30 04 -681 Orange vicinity of W St and Pacific Coast Hwy; City of Laguna Beach 4 Comment
  SBBG127247  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-30 12 -285 Orange Talbert Regional Park, general vicinity of Balboa Blvd and 19th St; Costa Mesa 5 Comment
  SBBG128698  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2011-10-19 11 -147 Orange City of San Juan Capistrano, San Juan Crk, ca. 0.2 mi W of intersection of Paseo Tirador and Calle Arroyo St 31 Comment
  SBBG132289  Atriplex amnicola R. E. Riefner Jr. 2006-4-17 06 -155 Orange upper Newport Bay, near Bayview Wy and Bayview Pl 6 Comment
  SBBG132290  Atriplex amnicola R. E. Riefner Jr. 2005-9-16 05 -666 Orange upper Newport Bay, E of Bayside Dr at confluence with Big Cyn 6 Comment
  SBBG132292  Atriplex glauca R. E. Riefner Jr. 2006-3-19 06 -52 Orange near Avocado Ave and San Nicolas Dr, W of MacArthur Blvd; Newport Beach 77 Comment
  SBBG132293  Paspalum vaginatum R. E. Riefner Jr. 2008-8-31 08 -267 Orange San Diego Crk, E side of Hwy. 73 overpass; Irvine 0 Comment
  SBBG133594  Atriplex amnicola R. E. Riefner Jr. 2006-5-7 06 -178 Orange N end of City of San Clemente, along I-5 Freeway, N side, immediately S of Camino de Estrella exit ramp 66 Comment
  SBBG133600  Calandrinia breweri R. E. Riefner Jr. 2008-3-5 08 -31 Orange Irvine Ranch Reserve, N Irvine Ranch, S of Windy Ridge Rd ca. 0.5 mi from W Fork of upper Fremont Cyn 495 Comment
  SBBG133602  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-9-11 07 -379 Orange vicinity of San Juan Crk Rd and Paseo Christina; San Juan Capistrano 34 Comment
  SBBG133611  Calandrinia breweri R. E. Riefner Jr. 2008-3-12 08 -34 Orange Irvine Ranch Reserve, N Irvine Ranch, E Fork of upper Fremont Cyn along Black Star SCE RD 715 Comment
  SBBG133612  Atriplex glauca R. E. Riefner Jr. 2005-12-31 05 -784 Orange ca. 0.5 mi N of Alton Pkwy on E side of SR-241; Lake Forest 230 Comment
  SBBG133631  Paspalum vaginatum R. E. Riefner Jr. 2008-7-29 08 -256 Orange Salt Crk Beach, near Ritz Carlton Hotel; Dana Point 0 Comment
  SBBG133655  Paspalum vaginatum R. E. Riefner Jr. 2008-8-31 08 -267 Orange tidal portion of San Diego Crk, immediately E of Hwy 73 overpass; Irvine 0 Comment
  SD187333  Artemisia californica R. E. Riefner Jr. 2006-8-25 06 410 Orange City of Dana Point, Salt Creek Beach Park, vicinity of Dana Strand Rd. and Selva Rd. 2 Comment
  SD187362  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-2-13 07 55 Orange San Juan Capistrano, vicinity of La Novia Ave. and San Juan Creek. 29 Comment
  SD187363  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-3-21 07 157 Orange San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek. 31 Comment
  SD187474  Populus trichocarpa R. E. Riefner Jr 2007-6-12 07 253 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek 35 Comment
  SD204870  Nolina cismontana R. E. Riefner Jr. 2007-6-14 07 256 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, west fork Fremont Canyon, Donaldson Ranch area. 381 Comment
  SD211597  Euphorbia misera R. E. Riefner Jr. 2008-3-24 08 62 Orange City of Dana Point, Dana Point Harbor, along Dana Point Harbor Drive at Island Way. USGS 7.5' Quad: West Basin, Dana Point 11 Comment
  SD212526  Plagiobothrys acanthocarpus R. E. Riefner 2006-4-12 06 116 Orange Irvine, north foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Canyon Road 46 Comment
  SD212539  Opuntia dejecta R. E. Riefner Jr. 2006-7-23 06 312 Orange City of Newport Beach, Upper Newport Bay, North shore of Newport Bay, West circa 0.25 miles from intersection of Bayview Way and Bayview Place 10 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
  SD218281  Plecostachys serpyllifolia R. E. Riefner Jr. 2006-7-26 06 319 Orange City of Irvine, north side of Irvine Blvd. at SR 133 on ramp. Comment
  SD218283  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. Comment
  SD218284  Plecostachys serpyllifolia R. E. Riefner Jr. 2004-12-30 04 681 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Highway. Comment
  SD218285  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-3-18 07 153 Orange City of Newport Beach, Dover Beach, Newport Bay, vicinity of Morning Star Ln. and Polaris Dr. Comment
  SD218286  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08 312 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Highway. Comment
  SD218289  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-12-23 08 381 Orange City of Laguna Beach, Mountain Rd. at Pacific Coast Highway. 21 Comment
  SD219022  Atriplex glauca R. E. Riefner Jr. 2002-5-4 20 87 Orange City of Dana Point, beach west of Pacifi Coast Highway near mouth of Salt Creek. 14 Comment
  SD233857  Geranium incanum R. E. Jr. Riefner 2012-6-30 12 285 Orange City of Costa Mesa, Talbert Regional Park, general vicinity of Balboa Blvd. and 19th Street. 4 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
  SD234735  Cyperus odoratus R. E. Jr. Riefner 2005-10-27 05 728 Orange South Coast: Huntington Beach, Huntington Central Park near Goldenwest St. 0 Comment
  SD234767  Parapholis incurva R. E. Riefner Jr. 2005-7-9 05 547 Orange South Coast: Huntington Beach, vicinity of Cynthia Dr. and Lavonne Ln. along the Santa Ana River. 7 Comment
  SD234768  Cenchrus longisetus R. E. Riefner Jr. 2003-11-30 03 486 Orange South Coast: Santa Ana, 55 Freeway near Brookhollow St. 32 Comment
  SD234804  Erigeron sumatrensis R. E. Riefner Jr. 2003-12-13 3 503 Orange South Coast: Los Alamitos, San Gabriel River, vicinity of Chestnut St and Cernitos Ave. (Los Alamitos 7.5'Q) 10 Comment
  SD234927  Chenopodium album R. E. Riefner Jr. 2006-10-8 6 484 Orange South Coast: Irvine, San Diego Creek near 405 Freeway, between 405 and Laguna Rd. 50 Comment
  SD234933  Cotyledon orbiculata R. E. Riefner Jr. 2006-8-25 06 407 Orange South Coast: Dana Point Harbor Dr. at Ensenada Pl. 13 Comment
  SD235019  Salix lasiandra var. lasiandra R. E. Jr. Riefner 2006-10-4 06 475 Orange Peninsular Range; Santa Ana Mtns. Foothills: Lake Forest, Aliso Creek near Portola Parkway at El Toro Rd. 224 Comment
  SD235021  Koelreuteria bipinnata R. E. Jr. Riefner 2006-11-14 06 673 Orange South Coast: Irvine, along San Diego Creek at Campus Ave. 3 Comment
  SD236354  Plantago erecta R. E. Riefner 2006-4-12 06 118 Orange Irvine, north foot of San Joaquin Hills, vicinity of Quail hill, SSW of 405 freeway and Shady Canyon Road. 46 Comment
  SD236405  Populus trichocarpa R. E. Jr. Riefner 2006-4-8 06 111 Orange South Coast: San Juan Capistrano (city), San Juan Creek at La Novia Ave. 21 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
  SD239535  Melinis repens R. E. Riefner Jr. 2011-8-16 11 98 Orange Newport Beach, Orange County Parks & Recreation lands, along Newport Coast Drive, between Vista Ridge road and Alteza Road. 281 Comment
  SD239618  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-7-7 11 88 Orange City of Dana Point, S of Mussel Cove, N of Salt Creek Beach Park. 7 Comment
  SD240772  Cyrtomium falcatum R. E. Riefner Jr. 2011-7-1 11 83 Orange City of Newport Beach, beach area west of the end of Camep Shores Road; south ca. 1 mi from Poppy Avenue. 2 Comment
  SD240828  Asclepias curassavica R. E. Riefner Jr. 2011-8-19 11 100 Orange City of Laguna Beach, bluff area west of West Street and Pacific Coast Highway. 3 Comment
  SD240896  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-6-25 11 71 Orange Cityof Laguna Beach, Woods Cove, vicinity of Ocean Way at Pearl Street. 9 Comment
  SD240897  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2011-10-19 11 147 Orange City of San Juan Capistrano, San Juan Creek, ca. 0.2 mi W of intersection of Paseo Tirador and Calle Arroyo Street. 31 Comment
  SD241062  Juglans hindsii R. E. Riefner Jr. 2011-8-25 11 114 Orange Trabuco Canyon, Trabuco Canyon Road ca. 1 mile NW of O'Neill Regional Park. 319 Comment
  SD241101  Melaleuca nesophila R. E. Riefner Jr. 2011-7-1 11 82 Orange City of Newpoprt Beach, beach area west of the end of Cameo Shores Road; south Ca. 1 mile from Poppy Avenue. 2 Comment
  SD243118  Atriplex amnicola R. E. Riefner Jr. 2006-2-12 06 21 Orange South Coast: N end of City of San Clemente, along N-bound I-5, immediately S of Camino de Estrella exit ramp (Dana Point 7.5'Q) 66 Comment
  SD243319  Atriplex glauca R. E Riefner 2005-12-13 05 784 Orange City of Lake Forest; ca. 0.5 mile N of Alton Pkwy along E side of SR-241 230 Comment
  SD243320  Atriplex glauca R. E Riefner 2006-3-19 06 52 Orange City of Newport Beach, near Avocado Ave. and San Nicolas Drive, W of MacArthur Blvd. 77 Comment
  SD243324  Salsola australis R. E. Riefner Jr. 2006-11-14 06 672 Orange City of Irvine, San Diego Creek; vicinity of Campus Ave. at University Drive. (Tustin 7.5'Q) 4 Comment
  SD243385  Melaleuca viminalis R. E. Riefner Jr. 2006-11-12 06 669 Orange City of Newport Beach, urban creek draining into San Diego Creek at confluence with Newport Bay near SR-73 overpass (San Joaquin Gun Club, Tustin 7.5'Q) 6 Comment
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Oct 4 2017
  SD247263  Adiantum capillus-veneris R. E. Riefner Jr. 2012-2-23 12 43 Orange City of Laguna Beach, Treasure Island Beach, vicinity of Wesley Drive and South Coast Highway. 0 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
  SD247322  Deinandra paniculata R. E. Jr. Riefner 2008-5-19 08 100 Orange Ladera Ranch, Cecil Pasture at Jerome Road; along Bluff Top Trail. 156 Comment
  SD247340  Pallenis maritima R. E. Jr. Riefner 2012-11-14 12 551 Orange City of Newport Beach, south of Poppy Street/Ocean Boulevard, coastal bluff near Little Corona Beach, rocky intertidal area. 4 Comment
  SD247344  Plecostachys serpyllifolia R. E. Jr. Riefner 2008-7-9 08 220 Orange City of Laguna Beach, bluff area W of West St. and Pacific Coast Highway. 4 Comment
  SD247403  Suaeda esteroa R. E. Riefner Jr. 2012-11-6 12 533 Orange City of Newport Beach, Newport Bay, North Star Beach near Newport Aquatic Center, White Cliffs Dr./N. Star Lane. 2 Comment
  SD247408  Ipomoea cairica R. E. Riefner Jr. 2012-11-27 12 563 Orange City of Laguna Beach, Southe Crescent Beach, Circly Way near Cliff Drive. 3 Comment
  SD247439  Quercus suber R. E. Riefner Jr. 2014-4-29 14 89 Orange City of Yorba Linda, Yorba Linda Regional Park along East La Palma Ave., W of Yorba Llinda Blvd; Parking Lot #7. 92 Comment
  SD247453  Lagunaria patersonia R. E. Riefner Jr. 2011-6-29 11 76 Orange City of Laguna Beach, general area of Shaw's Cove, vicinity of Cliff Drive and Fairview Street. 0 Comment
  SD247501  Populus trichocarpa R. E. Riefner Jr. 2012-9-23 12 512 Orange City of Yorba Linda, Santa Ana Canyon, N side of Santa Ana River, La Palma Ave at Via Del Rio Road. 103 Comment
  SD247503  Bacopa monnieri R. E. Riefner Jr. 2012-7-1 12 295 Orange City of Mission Viejo, Oso Creek, ca 1.3 mi N of Paseo De Colinas Ave on Camino Capistrano Ave. 88 Comment
  SD248281  Cyrtomium falcatum R. E. Riefner 2011-7-7 11 87 Orange City of Dana Point, S of Mussel Cove, N of Salt Creek Beach Park. 4 Comment
  SD248304  Paspalum vaginatum R. E. Riefner Jr. 2012-10-21 12 523 Orange City of Newport Beach, S. of Poppy Street / Ocean Blvd., creek at base of stairs. Little Corona Beach. 7 Comment
  SD248305  Cenchrus longisetus R. E. Riefner Jr. 2013-2-11 13 41 Orange City of Laguna Beach, vicinity of Pacific Coast Highway and Montage Resort Drive. 29 Comment
  SD248323  Bahiopsis laciniata R. E. Riefner Jr. 2013-4-5 13 56 Orange Anaheim Hills, vicinity Hidden Canyon Rd., at Avenue De Santiago 305 Comment
  SD248332  Dimorphotheca fruticosa R. E. Riefner Jr. 2011-7-1 11 79 Orange City of Newport Beach, beach area west of Shorecliff Road and Cameo Shores Road. 2 Comment
  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
  SD248339  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2013-3-10 13 39 Orange City of Lake Forest, along El Toro Rd., at Destry Rd. 210 Comment
  SD248402  Ipomoea purpurea R. E. Riefner Jr. 2012-9-7 12 504 Orange City of Dana Point, Dana Point Harbor Drive, vicinity of Island Way. 18 Comment
  SD248410  Euphorbia misera R. E. Riefner Jr. 2013-1-16 13 16 Orange City of Newort Beach, vicinity of Poppy Ave., and Ocean Blvd., coastal bluff at Little Corona Beach. 3 Comment
  SD248444  Juglans hindsii R. E. Riefner Jr. 2013-11-6 13 233 Orange City of Laguna Beach, Laguna Canyon, N of Phillips Street on East side of Laguna Canyon Road. 71 Comment
  SD248445  Juglans regia R. E. Riefner Jr. 2011-8-25 11 115 Orange Trabuco Canyon, Trabuco Canyon Road, ca. 1 mile NW of O'Neill Regional Park. 319 Comment
  SD248500  Lycium brevipes R. E. Jr. Riefner 2012-6-22 12 273 Orange City of Newport Beach, Corona del Mar, Little Corona Beach, vicinity of Poppy Ave. and Ocean Blvd. 3 Comment
  SD248502  Lycium brevipes var. hassei R. E. Jr. Riefner 2006-3-19 06 58 Orange City of San Clemente, San Clemente State Beach, SSW ca. 100 m from the intersection of Ave. Calafia and South Ola Vista Rd. Along trail. 39 Comment
  SD248503  Lycium brevipes var. hassei R. E. Jr. Riefner 2014-4-12 14 77 Orange City of San Clemente, San Clemente State Beach, SSW ca. 100 m from the intersection of Ave. Calafia and South Ola Vista Rd. Along trail. 39 Comment
  SD253479  Juglans hindsii R. E. Riefner Jr. 2013-11-6 13 234 Orange City of Laguna Beach, Laguna Canyon, N of Phillips St on E side of Laguna Canyon Rd. 71 Comment
  SD253480  Juglans hindsii R. E. Riefner Jr. 2010-9-8 10 121 Orange City of Laguna Beach, Laguna Canyon, ca 0.15 mile S of El Toro Road on E side of Laguna Canyon Road. 74 Comment
  SD260849  Cyrtomium falcatum R. E. Jr. Riefner 2012-2-2 12 19 Orange City of Dana Point, cliff and rocky intertidal area N 0.2 mi of Salt Creek lagoon. 9 Comment
  SD260850  Cyrtomium falcatum R. E. Jr. Riefner 2012-1-26 12 11 Orange City of Laguna Beach, Aliso Creek Beach, rocky intertidal area. 2 Comment
  SD260851  Cyrtomium falcatum R. E. Jr. Riefner 2012-1-16 12 5 Orange City of Newport Beach, Corona Del Mar, beach area west of Morning Canyon Road. 0 Comment
  SD260945  Euphorbia misera R. E. Jr. Riefner 2012-12-5 12 587 Orange City of Dana Point, Dana Point Harbor, Dana Harbor Drive near Cove Road. 9 Comment
  SD260970  Hypericum canariense R. E. Jr. Riefner 2010-6-9 10 56 Orange City of San Juan Capistrano, La Novia Ave. at Valle Rd. 45 Comment
  SD262146  Polypodium californicum R. E. Riefner Jr. 2017-3-31 17 137 Orange City of San Clemente, San Clemente State Beach, NW bluff area immediately S of Ave. Calafia. 24 Comment
  SEINET10805703  Plantago erecta Richard E. Riefner Jr. 2006-4-12 Riefner 06 -118 Orange Irvine, north foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Canyon Rd. (Tustin 7.5'Q). 46 Comment
  SEINET13203173 Image available Cyrtomium falcatum R. E. Riefner Jr. 2012-1 12 -19 Orange City of Dana Point, cliff and rocky intertidal area N 0.2 mi of Salt Creek lagoon. 9 Comment
  SEINET1910244  Nolina cismontana R. E. Riefner Jr. 2007-1 7 -256 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W fork Fremont Canyon, Donaldson Ranch area. 381 Comment
  SEINET2116164  Setaria megaphylla R. E. Riefner Jr. 2006-11-12 06 -667 Orange San Joaquin gun Club, Tustin Quad: City of Newport Beach, urban creek draining into San Diego Creek at confluence with Newport Bay, San Diego Creek at SR-73 overpass 10 Comment
  SEINET3386499 Image available Koelreuteria bipinnata R. E. Riefner Jr. 2006-1 673 Orange South Coast: Irvine, along San Diego Creek at Campus Ave. 4 Comment
  SEINET3828309  Melinis repens R. E. Riefner Jr. 2011-1 11 -98 Orange Fuel modification areas. Newport Beach, Orange County Parks & Recreation lands, along Newport Coast Drive, between Vista Ridge& Alteza Rd. 281 Comment
  SEINET3828400  Muhlenbergia microsperma R. E. Riefner Jr. 2011-1 11 -99 Orange Newport beach, Orange County Parks & Recreation lands, along Newport Coast Drive, between Vista Ridge Rd. & Alteza Rd. 281 Comment
  SEINET3828848  Plecostachys serpyllifolia R. E. Riefner, Jr. 2011-1 11 -73 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 2 Comment
  SEINET3870581  Cyrtomium falcatum R. E. Riefner Jr. 2006-9-5 06 -417 Orange Southern Coast: Corona del Mar, Ocean Blvd. near Iris Ave. (Laguna Beach 7.5'Q).; 0 11 Comment
  SEINET4176011 Image available Plecostachys serpyllifolia R. E. Riefner Jr. 2009-7-18 09 -151 Orange City of Dana Point, near Salt Creek, vicinity of Ritz Carlton Resort 3 Comment
  SEINET4691551  Juglans hindsii R. E. Riefner Jr. 2011-1 11 -34 Orange City of Laguna Beach, Laguna Canyon, Laguna Wilderness Park, Stagecoach Trial, ca. 0.15 mi N of El Toro Rd. on W side of Laguna Beach Rd. 86 Comment
  SEINET4691552  Iva hayesiana R. E. Riefner Jr. 2013-1 13 -206 Orange City of Hunington Beach, N of Pacific Coast Highway along Santa Ana River trail. W side Santa Ana River 7 Comment
  SEINET5585508  Bahiopsis laciniata R. E. Riefner Jr. 2013-1 13 -56 Orange Anaheim Hills, vicinity Hidden Canyon Rd. at Avenue De Santiago. 305 Comment
  SEINET5585509  Arctotheca prostrata R. E. Riefner Jr. 2013-1 13 -125 Orange City of Irvine, Irvine Valley College, Irvine Center Dr. near College St. 37 Comment
  SEINET5585513  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2013-1 13 -39 Orange City of Lake Forest, along El Toro Rd. at Destry Rd. 211 Comment
  SEINET5586505  Juglans hindsii R. E. Riefner Jr. 2013-1 13 -233 Orange City of Laguna Beach, Laguna Canyon, N of Phillips St. on E side of Laguna Canyon Rd. 71 Comment
  SEINET5866751 Image available Setaria megaphylla R. E. Riefner Jr. 2005-1 05 -731 Orange City of Huntington Beach, Huntington Central Park near Goldenwest St. USGS Quad: Seal Beach 1 Comment
  SEINET6168371  Calandrinia breweri R. E. Riefner Jr. 2008-1 08 -31 Orange Irvine Ranch Reserve, North Irvine Ranch, S of Windy Ridge Rd. ca. 0.5 mi from West Fork of upper Fremont Canyon. USGS 7.5' Quad: Black Star Canyon 496 Comment
  SEINET6186107  Euthamia occidentalis R. E. Riefner Jr. 2006-1 06 -666 Orange City of Newport Beach, urban creek draining into San Diego Creek at confluence with Newport Bay; San Diego Creek at SR-73 overpass. USGS QUAD: San Joaquin Gun Club, Tustin 6 Comment
  SEINET6654150  Callistemon viminalis R. E. Riefner Jr. 2006-11-14 06 -674 Orange City of Irvine, San Diego Creek, vicinity of Campus Ave at University Dr.; 0 5 Comment
  SEINET6654152  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr. 2007-6-12 07 -253 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek.; 0 152 Comment
  SEINET6654708  Holocarpha virgata subsp. elongata R. E. Riefner Jr. 2003-10-14 03 -421 Orange San Clemente State Beach, mima mound field in SW corner of park.; 0 27 Comment
  SEINET6655640  Paspalum urvillei R. E. Riefner Jr. 2005-11-4 05 -742 Orange City of Lake Forest, Alton Pkwy at Bertea Rd.; 0 123 Comment
  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
  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
  SEINET7249212  Adiantum capillus-veneris R. E. Riefner Jr. 2012-1 12 -43 Orange City of Laguna Beach, Treasure Island Beach, vicinity of Wesley Drive and South Coast Highway. 1 Comment
  SEINET7249215  Ipomoea cairica R. E. Riefner Jr. 2012-1 12 -563 Orange City of Laguna Beach, South Crescent Beach, Circle Way near Cliff Drive. 3 Comment
  SEINET7249216  Ehrharta erecta R. E. Riefner Jr. 2012-1 12 -15 Orange City of Dana Point, Dana Point Harbor, vicinity of Puerto Pl. and Dana Point Harbor Drive. 2 Comment
  SEINET7249217  Euphorbia misera R. E. Riefner Jr. 2012-1 12 -518 Orange City of Dana Point, Dana Point Harbor, 'Bluff Top Trail' located near Camino Capistrano and Violet Latern Streets. 35 Comment
  SEINET8043519 Image available Deinandra paniculata R. E. Riefner Jr. 2008-1 08 -100 Orange Ladera Ranch, Cecil Pasture at Jerome Rd. 157 Comment
  SEINET8073925 Image available Echinochloa crus-galli R. E. Riefner Jr. 2005-1 05 -552 Orange City of Huntington Beach, Huntington Central Park, Goldenwest St. near Slater Ave. USGS Quad: Seal Beach. 2 Comment
  SEINET9258835  Ehrharta erecta R. E. Riefner Jr. 2012-1 12 -15 Orange City of Dana Point, Dana Point Harbor, civinity of Puerto pl. and Dana Point Harbor Drive 2 Comment
  SEINET998621  Sorghum bicolor R. E. Riefner Jr. 2005-1 05 -710 Orange South Coast: Irvine, Irvine Blvd. at The Groves RD. (Tustin 7.5' Q) 84 Comment
  SEINET998786  Koelreuteria bipinnata R. E. Riefner Jr. 2006-1 06 -673 Orange South Coast: Irvine, along San Diego Creek at Campus Ave. (Tustin 7.5' Q.) 4 Comment
  UC1789094  Limonium duriusculum R. E. Riefner Jr. 2005-9-9 05 -664 Orange City of Lake Forest, along Aliso Creek near Portola Pkwy, at El Toro Road. 225 Comment
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Jul 5 2010
  UC1873111  Limonium R. E. Riefner Jr. 2006-10-19 06 -543 Orange Santa Ana Mountains, City of Rancho Santa Margarita, Robinson Ranch Road at Shadow Rock Road 419 Comment
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Jun 15 2011
  UC1873112  Limonium R. E. Riefner Jr. 2006-8-13 06 -391 Orange salt marsh with Salicornia; Coastal Salt Marsh 8 Comment
  UC1873114  Limonium R. E. Riefner Jr. 2006-8-11 06 -386 Orange Upper Newport Bay. E of Back Bay-Bayside Dr., flats along Big Canyon Creek 5 Comment
  UC1873116  Limonium duriusculum R. E. Riefner Jr. 2005-10-5 05 -707 Orange City of Irvine, near Bonita Creek, along La Salud St. near Milano Dr. 9 Comment
  UC1873119  Limonium duriusculum R. E. Riefner Jr. 2005-11-23 05 -772 Orange City of Newport Beach, Newport Bay, Bay View Dr. at Jamboree Road 6 Comment
  UC1923253  Limonium preauxii R. E. Riefner Jr. 2008-2-25 8 -25 Orange City of Lake Forest, Lake Forest Blvd. near Ranch Rd. at Serrano Creek 229 Comment
  UC1923254  Limonium sventenii R. E. Riefner Jr. 2008-2-16 8 -28 Orange City of Lake Forest (El Toro), El Toro Rd. near Raymond St., Canada de Los Alisos. 98 Comment
  UC1923821  Marsilea drummondii R. E. Riefner Jr. 2007-9-30 07 -415 Orange City of Yorba Linda, Santa Ana Canyon, urban runoff tributary to Santa Ana River, La Palma Ave. at Via Lomas De Yorba East. 110 Comment
  UC1925602  Marsilea drummondii R. E. Riefner Jr. 2008-6-22 08 -209 Orange City of Yorba Linda, Santa Ana Canyon, La Palma Ave. near Old Village Road; UTM (NAD 83) 11S 0433046E, 3747903N Comment
  UC1925603  Marsilea drummondii R. E. Riefner Jr. 2008-7-20 08 -243 Orange City of Irvine, San Diego Creek at West Yale Loop Road. Comment
  UC1930976  Abutilon palmeri R. E. Riefner Jr. 2006-9-5 06 -418 Orange Southern Coast: Corona del Mar, Ocean Blvd. near Iris Ave. Comment
  UC1930991  Cotyledon orbiculata R. E. Riefner Jr. 2006-8-25 06 -407 Orange South Coast: Dana Point Harbor, Dana Point Harbor Dr. at Ensenada Pl. Comment
  UC1936222  Salvinia minima R. E. Riefner Jr. 2008-7-9 08 -219 Orange City of Laguna Beach, bluff area W of West Street and Pacific Coast Highway 4 Comment
  UC1980248  Atriplex R. E. Riefner Jr. 2006-10-2 06 -466 Orange City of Lake Forest, N of Portola Pkwy. and immediately W of SR-241 freeway at avocado orchard; vicinity of Tomato Spring. Comment
  UC1980252  Atriplex R. E. Riefner Jr. 2006-8-3 06 -383 Orange City of Irvine, MacArthur Blvd. ca. 0.2 mi S of Jamboree Rd. near Bonita Creek. Comment
  UC1980254  Atriplex amnicola R. E. Riefner Jr. 2006-5-7 06 -180 Orange North end of City of San Clemente, along I-5 Freeway, N side, immediately S of Camino de Estrella exit ramp. Comment
  UC1980256  Atriplex R. E. Riefner Jr. 2007-10-26 07 -453 Orange City of Laguna Niguel, Laguna Niguel Regional Park, Sulphur Creek Reservoir, near La Paz Rd. and Kings Rd. Comment
  UC1980258  Atriplex R. E. Riefner Jr. 2008-3-24 08 -67 Orange City of Seal Beach, Bolsa Chica Salt Marsh, Warner Ave. at Pacific Coast Highway. Comment
  UC1980276  Atriplex R. E. Riefner Jr. 2006-2-12 06 -24 Orange North end of City of San Clemente, along I-5 Freeway North, immediately south of Camino de Estrella exit ramp. Comment
  UC2014867  Pallenis maritima R. E. Riefner Jr. 2012-5-25 12 -393 Orange City of Dana Point, rocky shore between Mussel Cove and Salt Creek Beach Comment
  UC2014872  Geranium incanum var. multifidum R. E. Riefner Jr. 2011-7-1 11 -78 Orange City of Laguna Beach, South Crescent Bay, vicinity of Circle Drive and Island Way. Comment
  UC2014873  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-16 12 -404 Orange City of Dana Point, Dana Point Harbor Drive at Island Way. Comment
  UC2014877  Pallenis maritima R. E. Riefner Jr. 2011-6-25 11 -74 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. Comment
  UC2031956  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-16 12 -5 Orange City of Newport Beach, Corona Del Mar, beach area west of Morning Canyon Road Comment
  UC2031957  Cyrtomium falcatum R. E. Riefner Jr. 2012-2-2 12 -19 Orange City of Dana Point, cliff and rocky intertidal area N 0.2 mi of Salt Creek lagoon Comment
  UC2031958  Adiantum capillus-veneris R. E. Riefner Jr. 2012-2-23 12 -43 Orange City of Laguna Beach, Treasure Island Beach, vicinity of Wesley Drive and South Coast Highway Comment
  UC2031959  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-26 12 -11 Orange City of Laguna Beach, Aliso Creek Beach, rocky intertidal area 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
  UC2041999  Nephrolepis cordifolia R. E. Riefner Jr. 2014-6-14 14 -171 Orange City of Newport Beach, Cliff Drive Park, along Cliff Dr. near Beacon St. Comment
  UC2042000  Nephrolepis cordifolia R. E. Riefner Jr. 2011-8-25 11 -120 Orange City of Laguna Beach, Aliso Beach County Park, bluff ca. 0.15 mi SE of Aliso Way, NW ca 0.25 mi of West St. Comment
  UC2042001  Nephrolepis cordifolia R. E. Riefner Jr. 2014-2-24 14 -64 Orange City of Dana Point, W ca. 0.1 mi from Island Way along Dana Point Harbor Dr., cliff slope immediately S of Santa Clara Ave. and Amber Lantern St. Comment
  UC2042004  Nephrolepis cordifolia R. E. Riefner Jr. 2010-5-14 10 -35 Orange City of Laguna Beach, N side of North Coast Highway near Jasmine St. Comment
  UC2046879  Thelypteris kunthii R. E. Riefner Jr. 2014-4-13 14 -83 Orange City of Newport Beach, Corona del Mar, Ocean Blvd. at Poinsettia Ave. Comment
  UC2046880  Psilotum nudum R. E. Riefner Jr. 2015-11-22 15 -453 Orange City of Costa Mesa, E side of Orange County Fairground, Lot #A-5, W of Newport Blvd. and N of Fair Drive. Comment
  UC2046882  Ficus microcarpa R. E. Riefner Jr. 2014-8-8 14 -273 Orange City of Laguna Beach, E side of South Coast Highway near Diamond St. Comment
  UC2046883  Ficus microcarpa R. E. Riefner Jr. 2014-7-13 14 -222 Orange City of Irvine, S side of Red Hill Ave. bridge E of 405 Freeway north-bound lane. Comment
  UC2046885  Ficus microcarpa R. E. Riefner Jr. 2014-2-24 14 -66 Orange City of Dana Point, W ca. 0.1 mi from Island Way along Dana Point Harbor Dr., cliff immediately S of Santa Clara Ave. and Amber Lantern St. Comment
  UC2046888  Ficus microcarpa R. E. Riefner Jr. 2015-8-27 15 -359 Orange City of Newport Beach, Corona del Mar, on Marguerite Ave. between Fifth Ave. and Fourth Ave. Comment
  UC2046890  Ficus microcarpa R. E. Riefner Jr. 2015-8-29 15 -368 Orange City of Rancho Santa Margarita, Trabuco Marketplace, Rancho Santa Margarita Blvd. at Plano Trabuco. Comment
  UC2046895  Psilotum nudum R. E. Riefner Jr. 2015-8-27 15 -357 Orange City of Laguna Beach, N side of North Coast Highway E side of La Brea St. Comment
  UC2048893  Rumohra adiantiformis R. E. Riefner Jr. 2016-10-27 16 -402 Orange City of Laguna Beach, Crescent Bay Drive, W of Circle Way. Comment
  UC2048895  Psilotum nudum R. E. Riefner Jr. 2017-1-15 17 -36 Orange City of Newport Beach, Polaris Drive, S of Evening Star Drive, Westcliff Park, N side of Newport Bay. Comment
  UC2061630  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10 -52 Orange City of San Juan Capistrano, along McKraken View Trail at San Juan Creek Road E of I-5 Freeway. Comment
  UC2061632  Paspalum vaginatum R. E. Riefner Jr. 2008-8-31 08 -267 Orange City of of Irvine, tidal portion of San Diego Creek, immediately east of Highway 73 overpass. Comment
  UC2061635  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-3-18 07 -153 Orange City of Newport Beach, Dover Beach, Newport Bay, vicinity of Morning Star Ln. and Polaris Dr. Comment
  UC2061637  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. Comment
  UC2061639  Verbesina dissita R. E. Riefner Jr. 2010-5-17 10 -08 Orange City of Laguna Niguel, Aliso Summit Hiking Trail ca. 1/3mi north heading from Pacific Island Drive/La Brise Ave. intersection between 1 3/4 mile marker post and 1 1/2 mile marker post. Comment
  UC2061640  Salix lucida subsp. lasiandra R. E. Riefner Jr. 2009-11-9 09 -243 Orange City of Yorba Linda, Santa Ana Canyon, Santa Ana River bottom, E of Weir Canyon Road, between Horseshoe Bend and vicinity of La Palma Ave. and Mercado del Rio. Comment
  UC2061641  Plecostachys serpyllifolia R. E. Riefner Jr. 2005-9-9 05 -654 Orange City of Lake Forest, Aliso Creek, S side of Portola Parkway and W of El Toro Road. Comment
  UC2061642  Plecostachys serpyllifolia R. E. Riefner Jr. 2006-7-26 06 -319 Orange City of Irvine, N side of Irvine Blvd. at SR-133 on-ramp. Comment
  UC2061643  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08 -312 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Highway. Comment
  UC2061644  Plecostachys serpyllifolia R. E. Riefner Jr. 2004-12-30 04 -681 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Highway. Comment
  UC2061654  Paspalum distichum R. E. Riefner Jr. 2005-7-9 05 -544 Orange City of Mission Viejo, Oso creek, ca. 0.5 mi N of Paseo De Colinas on Camino Capistrano. Comment
  UC2061655  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. Comment
  UC2061656  Paspalum vaginatum R. E. Riefner Jr. 2009-1-2 09 -10 Orange City of Newport Beach, Upper Newport Bay, Delhi Channel near University Dr. Comment
  UC2061661  Paspalum vaginatum R. E. Riefner Jr. 2008-7-29 08 -256 Orange City of of Dana Point, near Ritz-Car;ton Hotel, Salt Creek Beach area. Comment
  UC2061664  Paspalum pubiflorum R. E. Riefner Jr. 2007-9-30 07 -419 Orange City of Yorba Linda, Santa Ana Canyon, N bank of Santa Ana River, vicinity of La Palma Ave. and Via Loma De Yorba East. Comment
  UCD129392  Baccharis malibuensis R. E. Riefner Jr.; A. Wolf 2000-8-23 20- 732 Orange NCCP North Ranch Policy Plan Area. Fremont Canyon: north of Santiago Creek and immediately south of major stream fork. 304 Comment
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Jan 6 2018
  UCD169091  Cyrtomium falcatum R. E. Riefner Jr. 2011-7-7 11- 87 Orange City of Dana Point, S of Mussel Cove, N of Salt Creek Beach Park. 4 Comment
  UCD169163  Cordyline R. E. Riefner Jr. 2012-11-6 12- 532 Orange South Coast,City of Newport Beach, Newport Bay, North Star Beach, near Newport Aquatic Center, White Cliffs Drive/North Star Lane. 9 Comment
  UCD169185  Juglans hindsii R. E. Riefner Jr. 2013-11-6 13- 234 Orange City of Laguna Beach, Laguna Canyon. N of Phillips St. on E side of Laguna Canyon Rd. 71 Comment
  UCD169190  Juglans hindsii R. E. Riefner Jr. 2011-9-10 11- 124 Orange Santa Ana Canyon, I-91 northbound, S side of freeway, located within 100 ft of the Riverside County line. 127 Comment
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May 26 2020
  UCD169219  Juglans hindsii R. E. Riefner Jr. 2015-7-2 15- 191 Orange City of Laguna Beach, Laguna Canyon, ca. 0.25 mi S of El Toro Rd. on E side of Laguna Canyon Rd. 75 Comment
  UCD169410  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
  UCD169463  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-30 12- 285 Orange City of Costa Mesa, Talbert Regional Park, general vicinity of Balboa Blvd. and 19th Street. 5 Comment
  UCD169475  Atriplex amnicola R. E. Riefner Jr. 2006-2-12 6- 21 Orange South Coast, N end of City of San Clemente, along N-bound I-5, immediately S of Camino de Estrella exit ramp. 66 Comment
  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
  UCD170386  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-16 12- 5 Orange City of Newport Beach, Corona Del Mar, beach area west of Morning Canyon Road. 1 Comment
  UCD170387  Euphorbia misera R. E. Riefner Jr. 2012-12-5 12- 587 Orange City of Dana Point, Dana Point Harbor, Dana Harbor Drive near Cove Road. 8 Comment
  UCD170481  Hypericum canariense R. E. Riefner 2010-6-9 10- 56 Orange City of San Juan Capistrano, La Novia Ave. at Valle Rd. 45 Comment
  UCD170631  Geranium incanum R. E. Riefner Jr. 2007-4-28 07- 189 Orange South Coast, city of Newport Beach Newport Bay, North Star Beach, vicinity of Morning Star Lane. 2 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
  UCD170654  Geranium incanum R. E. Riefner Jr. 2012-12-5 12- 588 Orange South Coast, city of Dana Point, Dana Point Harbor, Dana Harbor Drive near Cove Road. 9 Comment
  UCD170853  Medicago truncatula R. E. Riefner Jr. 2011-5-20 11 -55 Orange South Coast, city of San Clemente, Avenida La Pata one block west of Calle Extremo at entrance to Richard Steed Memorial Park. 161 Comment
  UCD170887  Euphorbia misera R. E. Riefner Jr. 2013-1-16 13 -16 Orange South Coast, city of Newport Beach, vicinity of Poppy Ave. and Ocean Blvd., coastal bluff at Little Corona Beach. 3 Comment
  UCR112935  Cupressus forbesii R. E. Riefner Jr. 2000-1-18 20- 101 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Main Divide Road, top of Gypsum Canyon at Windy Ridge 518 Comment
  UCR112936  Juncus textilis R. E. Riefner Jr., Adrian Wolf 2000-1-24 20- 108 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of Santiago Creek and immediately south of major stream fork 305 Comment
  UCR112937  Calochortus weedii var. intermedius R. E. Riefner Jr. 2000-6-26 20- 580 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, along dirt road running N and west of Black Star Cyn. Road at powerline tower 631 Comment
  UCR112938  Viguiera laciniata R. E. Riefner Jr. 2000-7-2 20- 602 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, adventive along Black Star Canyon Road, N. of Silverado Creek Comment
  UCR112939  Styrax officinalis var. redivivus R. E. Riefner Jr. 2000-3-26 20- 148 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of major stream fork along west channel drainage 335 Comment
  UCR113027  Nolina cismontana R. E. Riefner Jr. 2000-3-19 20- 137 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running N and parallel to Black Star Cyn Road 396 Comment
  UCR113444  Echinodorus berteroi R. E. Riefner Jr. 2000-8-21 20- 728 Orange Santa Ana Mountains: Irvine Lake [Santiago Reservoir], first cove southeast of the dam 238 Comment
  UCR113445  Rumex pulcher R. E. Riefner Jr. 2000-8-17 20- 725 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, Silverado Creek near Forest Station 328 Comment
  UCR113446  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr., Adrian Wolf 2000-6-24 20- 116 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, Fremont Canyon, N. of Santiago Creek & immediately N. of major stream fork 305 Comment
  UCR113447  Quercus engelmannii R. E. Riefner Jr., Adrian Wolf 2000-6-1 20- 453 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
  UCR113448  Quercus wislizeni var. frutescens R. E. Riefner Jr. 2000-4-13 20- 361 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, upper drainage of Fremont Canyon near National Forest boundary, south of Claymore Mine 610 Comment
  UCR113449  Cupressus forbesii R. E. Riefner Jr., Adrian Wolf 2000-6-1 20- 451 Orange Peninsular Range, 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. 518 Comment
  UCR113450  Grindelia camporum var. bracteosa R. E. Riefner Jr. 2000-7-8 20- 626 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, on ridgetop overlooking W fork of Fremont Canyon, east of Main Divide Road along the powerline 396 Comment
  UCR113451  Romneya coulteri R. E. Riefner Jr. 2000-7-6 20- 615 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along powerline SE of upper Fremont Canyon 607 Comment
  UCR113452  Lepechinia cardiophylla R. E. Riefner Jr. 2000-4-5 20- 211 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, Main Divide Road, top of Gypsum Canyon, east of Windy Ridge 518 Comment
  UCR113453  Calamagrostis koelerioides R. E. Riefner Jr. 2000-6-22 20- 572 Orange Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along National Forest boundary, at powerline 756 Comment
  UCR113454  Polygala cornuta var. fishiae R. E. Riefner Jr. 2000-6-13 20- 494 Orange Santa Ana Mountains, North Ranch Policy Plan Area, N Fremont Canyon south of Donaldson Ranch, upper W fork of Fremont Canyon drainage 363 Comment
  UCR113455  Lilium humboldtii subsp. ocellatum R. E. Riefner Jr. 2000-6-30 20- 594 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
  UCR113456  Calycadenia tenella R. E. Riefner Jr. 2000-5-6 20- 444 Orange Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along powerline on National Forest boundary 582 Comment
  UCR113457  Harpagonella palmeri R. E. Riefner Jr. 2000-4-27 20- 391 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running south from Baker Canyon Road to Silverado Road 335 Comment
  UCR113458  Calandrinia breweri R. E. Riefner Jr. 2000-4-15 20- 374 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running north, but west of Black Star Canyon Rd. at powerline tower 520 Comment
  UCR113459  Calamagrostis koelerioides R. E. Riefner Jr. 2000-6-26 20- 579 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, along dirt road running N and west of Black Star Cyn. Road at powerline tower 631 Comment
  UCR113460  Pellaea mucronata subsp. mucronata R. E. Riefner Jr. 2000-8-8 20- 719 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, E slope of upper Fremont Canyon, south of Donaldson Ranch and south of powerline/ National Forest boundary 454 Comment
  UCR113461  Ribes californicum var. hesperium R. E. Riefner Jr. 2000-8-8 20- 720 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, E slope of upper Fremont Canyon, south of Donaldson Ranch and south of powerline/ National Forest boundary 454 Comment
  UCR114252  Pseudotsuga macrocarpa R. E. Riefner Jr. 2000-8-8 20- 717 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, E slope of upper Fremont Canyon, south of Donaldson Ranch and south of powerline/ National Forest boundary 454 Comment
  UCR114938  Nolina cismontana R. E. Riefner Jr. 2000-7-6 20- 616 Orange Peninsular Range, Santa Ana Mountains, NCCP North Ranch Policy Plan Area, NE property; upper (E fork) of Fremont Canyon along National Forest Boundary at powerlines 692 Comment
  UCR119292  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr. 2000-3-26 20- 151 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of major stream fork along west channel drainage 335 Comment
  UCR119293  Viola pedunculata R. E. Riefner Jr. 2000-4-27 20- 390 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running south from Baker Canyon Road to Silverado Road 335 Comment
  UCR119294  Senecio californicus R. E. Riefner Jr. 2000-6-26 20- 583 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running N from Baker Canyon Road 305 Comment
  UCR119295  Lamium amplexicaule R. E. Riefner Jr. 2000-6-26 20- 584 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running N from Baker Canyon Road 305 Comment
  UCR119296  Gilia capitata subsp. abrotanifolia R. E. Riefner Jr. 2000-4-27 20- 388 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running south from Baker Canyon Road to Silverado Road 335 Comment
  UCR119297  Cupressus forbesii R. E. Riefner Jr. 2000-1-18 20- 101 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Main Divide Road, top of Gypsum Canyon at Windy Ridge 518 Comment
  UCR119298  Rhamnus californica subsp. californica R. E. Riefner Jr. 2000-8-3 20- 711 Orange Santa Ana Mountains, North Ranch Policy Plan Area, east of Main Divide Road and Windy Ridge 535 Comment
  UCR119299  Grindelia camporum var. bracteosa R. E. Riefner Jr. 2000-7-8 20- 626 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, on ridgetop overlooking W fork of Fremont Canyon, east of Main Divide Road along the powerline 396 Comment
  UCR119300  Pseudognaphalium canescens subsp. canescens R. E. Riefner Jr. 2000-8-8 20- 724 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, E slope of upper Fremont Canyon, south of Donaldson Ranch and south of powerline/ National Forest boundary 454 Comment
  UCR119301  Trifolium willdenovii R. E. Riefner Jr., Adrian Wolf 2000-6-1 20- 458 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
  UCR119302  Dudleya lanceolata R. E. Riefner Jr., Adrian Wolf 2000-6-1 20- 456 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
  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
  UCR119304  Baccharis malibuensis R. E. Riefner Jr., Adrian Wolf 2000-8-23 20- 732 Orange Santa Ana Mountains, North Ranch Policy Plan Area. Fremont Canyon: north of Santiago Creek and immediately south of major stream fork 305 Comment
Read comments
Jan 6 2018
  UCR119305  Rhamnus tomentella subsp. tomentella R. E. Riefner Jr. 2000-8-8 20- 718 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, E slope of upper Fremont Canyon, south of Donaldson Ranch and south of powerline/ National Forest boundary 454 Comment
  UCR119306  Pedicularis densiflora R. E. Riefner Jr. 2000-3-18 20- 134 Orange Cleveland National Forest. Ridge-top east of Fremont Canyon and west of Hidden Valley 732 Comment
  UCR119307  Tauschia arguta R. E. Riefner Jr. 2000-3-18 20- 135 Orange Cleveland National Forest. Ridge-top east of Fremont Canyon and west of Hidden Valley 732 Comment
  UCR119308  Umbellularia californica R. E. Riefner Jr. 2000-2-19 20- 119 Orange Santa Ana Mountains, North Ranch Policy Plan Area. Fremont Canyon: north of Santiago Creek and immediately north of major stream fork 305 Comment
  UCR119309  Fraxinus dipetala R. E. Riefner Jr. 2000-2-19 20- 119 Orange Santa Ana Mountains, North Ranch Policy Plan Area. Fremont Canyon: north of Santiago Creek and immediately north of major stream fork 305 Comment
  UCR119310  Micropus californicus var. californicus R. E. Riefner Jr. 2000-4-27 20- 387 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running south from Baker Canyon Road to Silverado Road 335 Comment
  UCR119311  Solidago californica R. E. Riefner Jr. 2000-8-8 20- 723 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, E slope of upper Fremont Canyon, south of Donaldson Ranch and south of powerline/ National Forest boundary 454 Comment
  UCR119312  Thysanocarpus laciniatus R. E. Riefner Jr. 2000-6-22 20- 576 Orange Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along National Forest boundary, at powerline 756 Comment
  UCR119313  Holodiscus discolor R. E. Riefner Jr. 2000-6-22 20- 574 Orange Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along National Forest boundary, at powerline 756 Comment
  UCR119314  Calochortus weedii var. intermedius R. E. Riefner Jr. 2000-6-26 20- 581 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running N from Baker Canyon Road 305 Comment
  UCR119315  Quercus berberidifolia R. E. Riefner Jr. 2000-1-18 20- 103 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Main Divide Road, top of Gypsum Canyon at Windy Ridge 518 Comment
  UCR119316  Quercus berberidifolia R. E. Riefner Jr., Adrian Wolf 2000-6-1 20- 454 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
  UCR119317  Quercus berberidifolia R. E. Riefner Jr. 2000-7-8 20- 627 Orange Santa Ana Mountains, North Ranch Policy Plan Area, on ridgetop overlooking W fork of Fremont Canyon, east of Main Divide Road along the powerline 396 Comment
  UCR119798  Quercus berberidifolia R. E. Riefner Jr. 2000-3-18 20- 136 Orange Cleveland National Forest. Ridge-top east of Fremont Canyon and west of Hidden Valley 732 Comment
  UCR119800  Quercus berberidifolia R. E. Riefner Jr. 2000-3-19 20- 144 Orange Santa Ana Mountains, North Ranch Policy Plan Area, top of Gypsum Canyon, Windy Ridge 518 Comment
  UCR119801  Quercus berberidifolia R. E. Riefner Jr. 2000-8-8 20- 721 Orange Peninsular Range, Santa Ana Mountains, North Ranch Policy Plan Area, NE property, E slope of upper Fremont Canyon, south of Donaldson Ranch and south of powerline/ National Forest boundary 454 Comment
  UCR119802  Quercus berberidifolia R. E. Riefner Jr. 2000-6-22 20- 572 Orange Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along National Forest boundary, at powerline 756 Comment
  UCR129919  Limonium ramosissimum R. E. Riefner Jr. 2002-5-2 20- 92 Orange Upper Newport Bay, Jamboree Rd. at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR130484  Atriplex triangularis R. E. Riefner Jr. 2003-8-31 03- 340 Orange South Coast, Costa Mesa, Talbert Regional Park, Discovery Walk Trail and Balboa Ave. 12 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
  UCR130486  Descurainia pinnata subsp. halictorum R. E. Riefner Jr. 1999-5-22 99- 291 Orange South Coast, city of Dana Point, west of Pacific Coast Hwy, vicinity of Salt Creek Park and Ritz Carlton Hotel 15 Comment
  UCR130487  Pulicaria paludosa R. E. Riefner Jr. 2002-5-4 02- 93 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR130488  Lomatium utriculatum R. E. Riefner Jr. 2000-4-27 00- 392 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running south from Baker Canyon Road to Silverado Road 335 Comment
  UCR130489  Aristida purpurea var. parishii R. E. Riefner Jr. 2000-7-7 00- 629 Orange Santa Ana Mtns., North Ranch Policy Plan Area, on ridgeline overlooking upper west fork of Fremont Canyon; east of Main Divide Road and SE from Windy Ridge cypress forest 348 Comment
  UCR130490  Atriplex glauca R. E. Riefner Jr. 2002-5-4 02- 101 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR130491  Malacothrix saxatilis var. saxatilis R. E. Riefner Jr. 2000-9-19 00- 739 Orange South Coast, Dana Point, west of Pacific Coast Hwy, vicinity of Salt Creek Park and Ritz Carlton Hotel 15 Comment
  UCR130492  Malacothrix saxatilis var. saxatilis R. E. Riefner Jr. 1999-5-22 99- 289 Orange South Coast, city of Dana Point, west of Pacific Coast Hwy, vicinity of Salt Creek Park and Ritz Carlton Hotel 15 Comment
  UCR130493  Rorippa nasturtium-aquaticum R. E. Riefner Jr. 2002-5-4 02- 97 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR130494  Atriplex semibaccata R. E. Riefner Jr. 2002-5-4 02- 90 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR130495  Frankenia salina R. E. Riefner Jr. 2002-5-4 02- 95 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR130496  Aristida purpurea var. parishii R. E. Riefner Jr. 2000-8-3 00- 7012 Orange Santa Ana Mountains, North Ranch Policy Plan Area, east of Main Divide Road and Windy Ridge 535 Comment
  UCR130497  Verbena bracteata R. E. Riefner Jr. 2000-8-21 00- 727 Orange Santa Ana Mountains: Irvine Lake [Santiago Reservoir], first cove southeast of the dam 238 Comment
  UCR130498  Batis maritima R. E. Riefner Jr. 2003-8-17 03- 336 Orange South Coast, Costa Mesa, salt marsh along Santa Ana River, west of Talbert Regional Park 11 Comment
  UCR130499  Salicornia bigelovii R. E. Riefner Jr. 2003-8-17 03- 335 Orange South Coast, Costa Mesa, salt marsh along Santa Ana River, west of Talbert Regional Park 11 Comment
  UCR138329  Plantago erecta R. E. Riefner Jr. 2000-3-14 20- 135 Orange Santa Ana Mtns., North Ranch Policy Plan Area, Along dirt road running N from Baker Canyon Road 305 Comment
  UCR138330  Isolepis carinata R. E. Riefner Jr. 2000-7-10 20- 641 Orange Nature Reserve of Orange Co., Los Trancos Canyon, east of Pelican Hill Comment
  UCR138331  Juncus textilis R. E. Riefner Jr., Adrian Wolf 2000-1-24 20- 108 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of Santiago Creek and immediately south of major stream fork 305 Comment
  UCR138332  Melica imperfecta R. E. Riefner Jr., Adrian Wolf 2000-6-1 20- 460 Orange Santa Ana Mountains, North Ranch Policy Plan Area, north of Irvine Lake [Santiago Reservoir] and west of Black Star Canyon, west of dirt access road, W slope of Fremont Canyon. 473 Comment
  UCR138437  Aristida purpurea var. parishii R. E. Riefner Jr. 2000-7-9 20 635 Orange Santa Ana Mtns., Cleveland National Forest, upper drainage of Fremont Canyon along the southern National Forest Boundary; above the powerline 610 Comment
  UCR138438  Juncus rugulosus R. E. Riefner Jr. 2000-3-26 20 151 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of major stream fork along west channel drainage 335 Comment
  UCR138439  Dryopteris arguta R. E. Riefner Jr. 2000-3-26 20 149 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of major stream fork along west channel drainage 335 Comment
  UCR138440  Poa secunda R. E. Riefner Jr. 2000-4-15 20- 379 Orange Santa Ana Mtns., North Ranch Policy Plan Area Main Divide Road; south of Gypsum Canyon and south of Windy Ridge 518 Comment
  UCR138441  Bromus carinatus R. E. Riefner Jr. 2000-6-22 20 575 Orange Santa Ana Mountains, North Ranch Policy Plan Area, NE property, along National Forest boundary, at powerline 756 Comment
  UCR138442  Oxalis californica R. E. Riefner Jr. 2000-4-27 20- 389 Orange Santa Ana Mountains, North Ranch Policy Plan Area, along dirt road running south from Baker Canyon Road to Silverado Road 335 Comment
  UCR153474  Juncus textilis R. E. Riefner Jr., A. Wolf 2000-1-24 20- 108 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of Santiago Creek and immediately south of major stream fork 305 Comment
  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
  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
  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
  UCR168348  Cyrtomium falcatum R. E. Riefner Jr. 2000-7-10 20- 640 Orange South Coast, Newport Beach/Corona del Mar: end of Poppy Ave. off Pacific Coast Hwy 24 Comment
  UCR171016  Plagiobothrys acanthocarpus R. E. Riefner Jr. 2006-4-12 06- 116 Orange Irvine, north foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Canyon Rd. 46 Comment
  UCR171017  Microseris douglasii subsp. platycarpha R. E. Riefner Jr. 2006-4-12 06- 117 Orange Irvine, north foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Canyon Rd. 46 Comment
  UCR171018  Plantago erecta R. E. Riefner Jr. 2006-4-12 06- 118 Orange Irvine, north foot of San Joaquin Hills, vicinity of Quail Hill, SSW of 405 Freeway and Shady Canyon Rd. 46 Comment
  UCR171019  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr. 2006-4-8 06- 111 Orange South Coast, San Juan Capistrano (city), San Juan Creek at La Novia Ave. 22 Comment
  UCR171395  Lemna minuta R. E. Riefner Jr. 2005-10-27 05 303 Orange City of Irvine; along Jeffrey Rd. N of Barranca Rd. near Irvine Valley College 47 Comment
  UCR177129  Limonium duriusculum R. E. Riefner Jr. 2002-5-4 02- 99 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR179757  Salix lucida subsp. 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
  UCR179758  Parapholis incurva R. E. Riefner Jr. 2005-7-9 05- 547 Orange South Coast, Huntington Beach, vicinity of Cynthia Dr. and Lavonne Lane along the Santa Ana River 7 Comment
  UCR179759  Conyza floribunda R. E. Riefner Jr. 2006-10-8 06- 481 Orange South Coast, Irvine, San Diego Creek near 405 Freeway, between 405 and Laguna Road 51 Comment
  UCR179762  Chenopodium album R. E. Riefner Jr. 2006-10-8 06- 484 Orange South Coast, Irvine, San Diego Creek near 405 Freeway, between 405 and Laguna Road 51 Comment
  UCR179763  Ludwigia repens R. E. Riefner Jr. 2006-10-8 06- 483 Orange South Coast, Irvine, San Diego Creek near 405 Freeway, between 405 and Laguna Road 51 Comment
  UCR179765  Lepidium oblongum R. E. Riefner Jr. 2006-4-8 06- 112 Orange South Coast, San Juan Capistrano (city), San Juan Creek at La Novia Ave. 22 Comment
  UCR179769  Conyza floribunda R. E. Riefner Jr. 2003-12-13 03- 503 Orange South Coast, Los Alamitos, San Gabriel River, vicinity of Chestnut St. and Cerritos Ave. 11 Comment
  UCR179771  Crassula argentea R. E. Riefner Jr. 2006-8-25 06- 408 Orange South Coast, Dana Point Harbor, Dana Point Harbor Dr. at Ensenada Pl. 13 Comment
  UCR179772  Asclepias curassavica R. E. Riefner Jr. 2005-10-27 05- 727 Orange South Coast, Huntington Beach, Huntington Central Park near Goldenwest St. 1 Comment
  UCR179773  Cyperus odoratus R. E. Riefner Jr. 2005-10-27 05- 728 Orange South Coast, Huntington Beach, Huntington Central Park near Goldenwest St. 1 Comment
  UCR181151  Sorghum bicolor R. E. Riefner Jr. 2005-10-5 05- 710 Orange South Coast, Irvine, Irvine Blvd. at The Groves Rd. 84 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
  UCR181158  Pennisetum villosum R. E. Riefner Jr. 2003-11-30 03- 486 Orange South Coast, Santa Ana, 55 Freeway near Brookhollow St. 32 Comment
  UCR181165  Lotus scoparius var. scoparius R. E. Riefner Jr. 2006-7-2 06- 277 Orange South Coast, Costa Mesa, St. Route 73 at 55 Freeway interchange 20 Comment
  UCR182816  Abutilon palmeri R. E. Riefner Jr. 2006-9-5 06- 418 Orange Southern Coast, Corona del Mar, Ocean Blvd. near Iris Ave. 11 Comment
  UCR182817  Cotyledon orbiculata R. E. Riefner Jr. 2006-8-25 06- 407 Orange South Coast, Dana Point Harbor, Dana Point Harbor Dr. at Ensenada Pl. 13 Comment
  UCR182824  Cyrtomium falcatum R. E. Riefner Jr. 2006-9-5 06- 417 Orange Southern Coast, Corona del Mar, Ocean Blvd. near Iris Ave. 11 Comment
  UCR182825  Populus trichocarpa R. E. Riefner Jr. 2006-9-16 06- 434 Orange Yorba Linda, north of Chapman Ave. c. 1 mile along floodplain of Santa Ana River 98 Comment
  UCR187356  Melaleuca citrina R. E. Riefner Jr. 2005-11-23 05- 773 Orange South Coast, Newport Beach (city), Upper Newport Bay, east of Jamboree Rd and south of Bayview Way at Bonita 6 Comment
  UCR187357  Cupressus forbesii R. E. Riefner Jr. 2005-4-15 05- 202 Orange Peninsular Range; Santa Ana Mtns., Gypsum Canyon, south end of Gypsum Canyon Rd., south of 91 Freeway 160 Comment
  UCR187444  Opuntia dejecta R. E. Riefner Jr. 2006-7-23 06- 312 Orange South Coast, Newport Beach (city), north shore of Upper Newport Bay, west c. 0.25 mi. from intersection of Bayview Way and Bayview Place 11 Comment
  UCR198527  Eucalyptus erythrocorys R. E. Riefner Jr. 2007-9-27 07- 414 Orange South Coast, city of Laguna Niguel, along Forbes Road near Crown Valley Parkway, west of Hwy I-5 Comment
  UCR199267  Callistemon viminalis R. E. Riefner Jr. 2007-4-1 07- 163 Orange South Coast, city of Laguna Niguel, Oso Creek, c. 1.5 mi north from Paseo de Colinas Street on Camino Capistrano Street 88 Comment
  UCR199271  Salsola australis R. E. Riefner Jr. 2006-11-14 06- 672 Orange South Coast, Irvine, along San Diego Creek at Campus Avenue and University Drive 4 Comment
  UCR202430  Atriplex glauca R. E. Riefner Jr. 2002-5-4 02- 91 Orange South Coast, Upper Newport Bay, Jamboree Road at Bayview Dr., edge of Newport Beach Q. 21 Comment
  UCR203875  Ericameria cuneata var. cuneata R. E. Riefner Jr. 2007-6-29 07- 285 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east fork of Fremont Canyon, Black Star SCE Road 613 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
  UCR203877  Pseudotsuga macrocarpa R. E. Riefner Jr. 2008-6-3 08- 134 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east fork of Fremont Canyon, Black Star SCE Road 646 Comment
Read comments
Jun 8 2011
  UCR203878  Atriplex glauca R. E. Riefner Jr. 2009-1-2 09- 4 Orange South Coast, city of Newport Beach, Upper Newport Bay, vicinity of Irvine Ave. and Santiago Dr. 10 Comment
  UCR203880  Atriplex amnicola R. E. Riefner Jr. 2005-9-9 05- 659 Orange South Coast, city of Dana Point, beach south of Salt Creek, past Ritz Carlton Hotel on Pacific Coast Hwy 2 Comment
  UCR203881  Atriplex glauca R. E. Riefner Jr. 2006-3-19 06- 52 Orange South Coast, city of Newport Beach, near Avocado Ave. and San Nicolas Dr., west of MacArthur Blvd. 77 Comment
  UCR203883  Salix lucida subsp. lasiandra R. E. Riefner Jr. 2008-5-20 08- 108 Orange Irvine Ranch Reserve, north Irvine Ranch, south Donaldson Ranch c. 0.75 mi along west fork of upper Fremont Canyon 405 Comment
  UCR203889  Atriplex R. E. Riefner Jr. 2006-10-2 06 466 Orange city of Lake Forest, north of Portola Parkway and immediately west of SR-241 fwy at avocado orchard, vicinity of Tomato Spring 206 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
  UCR203895  Dudleya multicaulis R. E. Riefner Jr. 2008-3-5 08- 30 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, lower Lakeview SCE Road 274 Comment
  UCR203896  Romneya coulteri R. E. Riefner Jr. 2008-3-20 08- 106 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, west fork Fremont Canyon, south Donaldson Ranch area 380 Comment
  UCR203897  Lepechinia cardiophylla R. E. Riefner Jr. 2008-3-21 08- 59 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, west Fremont Canyon, Windy Ridge south to west fork canyon 463 Comment
  UCR203898  Calochortus catalinae R. E. Riefner Jr. 2008-4-15 08- 71 Orange Irvine Ranch Reserve, north Irvine Ranch, Fremont Canyon Conservation Easement, west Fremont Canyon, lower Coalmine SCE Road 301 Comment
  UCR203899  Calandrinia breweri R. E. Riefner Jr. 2008-4-15 08- 72 Orange Irvine Ranch Reserve, north Irvine Ranch, western middle Fremont Canyon area, Coalmine SCE Road 353 Comment
  UCR203900  Calandrinia breweri R. E. Riefner Jr. 2008-5-15 08- 82 Orange Irvine Ranch Reserve, north Irvine Ranch, eastern Fremont Canyon area, Black Star SCE Road 549 Comment
  UCR203901  Antirrhinum multiflorum R. E. Riefner Jr. 2008-5-15 08- 83 Orange Irvine Ranch Reserve, north Irvine Ranch, east fork of upper Fremont Canyon along Black Star SCE Road 610 Comment
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Dec 14 2012
  UCR203902  Calandrinia breweri R. E. Riefner Jr. 2008-5-16 08- 86 Orange Irvine Ranch Reserve, north Irvine Ranch, lower eastern Fremont Canyon area, Lakeview SCE Road 549 Comment
  UCR203903  Calandrinia breweri R. E. Riefner Jr. 2008-5-20 08- 104 Orange Irvine Ranch Reserve, north Irvine Ranch, western Fremont Canyon, Windy Ridge Road 531 Comment
  UCR203904  Atriplex amnicola R. E. Riefner Jr. 2008-5-25 08- 118 Orange South Coast, San Clemente, vicinity of Camino de Los Mares and Calle Nuevo 45 Comment
  UCR203905  Antirrhinum multiflorum R. E. Riefner Jr. 2008-6-3 08- 139 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east fork at upper Fremont Canyon, along Black Star SCE Road 618 Comment
  UCR203906  Calochortus weedii var. intermedius R. E. Riefner Jr. 2008-6-3 08- 138 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east fork of Fremont Canyon, Black Star SCE Road 622 Comment
  UCR203907  Calochortus weedii var. intermedius R. E. Riefner Jr. 2008-6-11 08- 150 Orange Santa Ana Mountains, Irvine Ranch Reerve, Fremont Canyon Conservation Eaement, west Fremont Canyon, Coalmine SCE Road 366 Comment
  UCR203908  Lepechinia cardiophylla R. E. Riefner Jr. 2008-6-12 08- 152 Orange Santa Ana Mountains, Irvine Ranch Reerve, Fremont Canyon Conservation Eaement, west Fremont Canyon, Windy Ridge south to west fork canyon habitat 515 Comment
  UCR203909  Antirrhinum multiflorum R. E. Riefner Jr. 2008-6-17 08- 159 Orange Santa Ana Mountains, Irvine Ranch Reserve, North Irvine Ranch, middle Fremont Canyon, east slope along Black Star SCE Road 618 Comment
  UCR203910  Antirrhinum multiflorum R. E. Riefner Jr. 2008-7-21 08- 248 Orange Santa Ana Mountains, Irvine Ranch Reserve, North Irvine Ranch, middle Fremont Canyon, east slope along Black Star SCE Road 718 Comment
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Sep 5 2010
  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
  UCR204165  Paspalum vaginatum R. E. Riefner Jr. 2007-7-8 07- 304 Orange City of Laguna Niguel, Aliso Creek, Alicia Pkwy at Skate Park Way 46 Comment
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Jul 30 2010
  UCR204282  Paspalum vaginatum R. E. Riefner Jr. 2008-1-13 08- 04 Orange South Coast, city of Laguna Beach, Aliso Creek at Pacific Coast Hwy 9 Comment
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Jul 30 2010
  UCR204899  Paspalum vaginatum R. E. Riefner Jr. 2003-10-14 03- 456 Orange South Coast, city of San Juan Capistrano, Trabuco Creek, south side of Del Obispo Street at Paseo Adelento Street 26 Comment
  UCR204900  Paspalum vaginatum R. E. Riefner Jr. 2005-7-9 05- 545 Orange South Coast, city of Mission Viejo, Oso Creek, c. 1.4 mi north of Paseo de Colinas on Camino Capistrano 88 Comment
  UCR204907  Paspalum vaginatum R. E. Riefner Jr. 2007-7-23 07- 314 Orange South Coast, city of Newport Beach, east of Jamboree Road at Bayview Way, San Diego Creek confluence with Newport Bay 6 Comment
  UCR204908  Paspalum vaginatum R. E. Riefner Jr. 2007-10-26 07- 461 Orange South Coast, city of Newport Beach, North Star Beach, north shore of Newport Bay near North Star Lane 9 Comment
  UCR204909  Paspalum vaginatum R. E. Riefner Jr. 2008-1-13 08- 9 Orange South Coast, city of Newport Beach, San Diego Creek near Hwy 73 overpass, east of Jamboree Road 6 Comment
  UCR205870  Baccharis malibuensis R. E. Riefner Jr., T. Smith 2007-6-22 07- 275 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Road 545 Comment
  UCR205871  Baccharis malibuensis R. E. Riefner Jr. 2008-7-17 08- 241 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Road 600 Comment
  UCR205872  Baccharis malibuensis R. E. Riefner Jr. 2008-7-17 08- 239 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Road 574 Comment
  UCR205873  Baccharis malibuensis R. E. Riefner Jr. 2008-7-2 08- 181 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Road 660 Comment
  UCR205874  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08- 175 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Road 483 Comment
  UCR205875  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08- 173 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Road 470 Comment
  UCR205876  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08- 171 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Road 495 Comment
  UCR205983  Muhlenbergia asperifolia R. E. Riefner Jr. 2000-3-26 20- 150 Orange Peninsular Range, Santa Ana Mountains: North Ranch Policy Plan Area, Fremont Canyon, north of major stream fork along west channel drainage 335 Comment
  UCR207683  Acourtia microcephala R. E. Riefner Jr. 2008-5-13 08- 76 A Orange Irvine Ranch Reserve, Management Area 11, west side of Hicks Haul Road, near the city of Orange Comment
  UCR208060  Atriplex suberecta R. E. Riefner Jr. 1999-5-22 99- 292 Orange South Coast, city of Dana Point, west of Pacific Coast Hwy, vicinity of Salt Creek Park and Ritz Carlton Hotel 15 Comment
  UCR208437  Nolina cismontana R. E. Riefner Jr. 2007-6-14 07- 256 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, west fork Fremont Canyon, Donaldson Ranch area 381 Comment
  UCR208444  Calochortus weedii var. intermedius R. E. Riefner Jr. 2008-6-5 08- 146 Orange South Coast, near city of Orange, west side of Hicks Haul Road, Rattlesnake Canyon southwest of the asphalt plant; Irvine Ranch Reserve, Management Area 6 Comment
  UCR208445  Medicago truncatula R. E. Riefner Jr. 2007-4-1 07- 166 Orange South Coast, city of Laguna Niguel, Laguna Niguel Regional Park, general vicinity of La Paz Road at Aliso Creek 230 Comment
  UCR208446  Medicago rigidula R. E. Riefner Jr. 2008-5-22 08- 120 Orange South Coast, unincorporated land between the cities of Lake Forest and Rancho Santa Margarita, El Toro Road near Meadow Ridge Drive 362 Comment
  UCR208447  Medicago truncatula R. E. Riefner Jr. 2008-3-24 08- 64 Orange South Coast, Rancho Santa Margarita, Tijeras Canyon, north c. 0.5 mi from Meandering Trails Road on Antonio Parkway 221 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
  UCR216055  Juglans hindsii R. E. Riefner Jr. 2009-8-12 09- 168 Orange Peninsular Range; Foothills of Santa Ana Mtns., near Silverado, Cook's Corner area, Santiago Canyon Road at Lawrence Canyon Rd. 335 Comment
  UCR216056  Juglans regia R. E. Riefner Jr. 2009-7-18 09- 149 Orange Trabuco Canyon, Trabuco Canyon Rd. c. 1.25 mi. NW of O'Neil Regional Park 332 Comment
  UCR222648  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08- 308 Orange South Coast, city of Laguna Beach, ocean bluff vicinity of West St. and Pacific Coast Highway 4 Comment
  UCR222656  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08- 312 Orange South Coast, city of Laguna Beach, ocean bluff vicinity of West St. and Pacific Coast Highway 6 Comment
  UCR222661  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2008-8-5 08- 259 Orange Peninsular Range; Santa Ana Mtns., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, lower Fremont Canyon, main drainage 223 Comment
  UCR222662  Parietaria judaica R. E. Riefner Jr. 2006-5-21 06- 199 Orange South Coast, city of Huntington Beach, Beach Blvd. at MacDonald Ave. 8 Comment
  UCR222664  Pentachaeta aurea subsp. allenii R. E. Riefner Jr. 2008-6-25 08- 169 Orange Peninsular Range; Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Lakeview SCE Road 480 Comment
  UCR229282  Juglans californica R. E. Riefner Jr. 2011-8-25 11- 113 Orange Trabuco Canyon, Trabuco Canyon Road c. 1 mi northwest of O'Neill Regional Park 319 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
  UCR229284  Juglans hindsii R. E. Riefner Jr. 2011-8-25 11- 114 Orange Trabuco Canyon, Trabuco Canyon Road c. 1 mi northwest of O'Neill Regional Park 319 Comment
  UCR229285  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-6-25 11- 73 Orange South Coast, city of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby Street 7 Comment
  UCR229286  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-7-7 11- 88 Orange city of Dana Point, south of Mussel Cove, north of Salt Creek Beach Park 9 Comment
  UCR230581  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-6-25 11- 71 Orange South Coast, city of Laguna Beach, Woods Cove, vicinity of Ocean Way at Pearl Street 9 Comment
  UCR230584  Cyrtomium falcatum R. E. Riefner Jr. 2011-7-1 11- 83 Orange South Coast, city of Newport Beach, beach area west of the end of Cameo Shores Road, south c. 1 mi from Poppy Avenue 2 Comment
  UCR230879  Melaleuca nesophila R. E. Riefner Jr. 2011-7-1 11- 82 Orange South Coast, city of Newport Beach, beach area west of the end of Cameo Shores Road, south c. 1 mi from Poppy Avenue 2 Comment
  UCR232927  Marsilea drummondii R. E. Riefner Jr. 2007-9-30 07- 415 Orange city of Yorba Linda, Santa Ana Canyon, urban runoff tributary to Santa Ana River. La Palma Ave. at Via Lomas de Yorba East 110 Comment
  UCR232928  Marsilea drummondii R. E. Riefner Jr. 2008-7-20 08- 243 Orange South Coast, city of Irvine, San Diego Creek at West Yale Loop Road Comment
  UCR232931  Soleirolia soleirolii R. E. Riefner Jr. 2011-7-1 11- 84 Orange South Coast, city of Newport Beach, beach area west of the end of Cameo Shores Road, south c. 1.5 mi from Poppy Avenue 2 Comment
  UCR232932  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2011-10-19 11- 147 Orange South Coast, city of San Juan Capistrano, San Juan Creek, c. 0.2 mi west of intersection of Paseo Tirador and Calle Arroyo Street 31 Comment
  UCR235509  Muhlenbergia microsperma R. E. Riefner Jr. 2011-8-16 11- 99 Orange South Coast, Newport Beach, Orange County Parks and Recreation lands, along Newport Coast Drive, between Vista Ridge Road and Alteza Road 281 Comment
  UCR235510  Melinis repens R. E. Riefner Jr. 2011-8-16 11- 98 Orange South Coast, Newport Beach, Orange County Parks and Recreation lands, along Newport Coast Drive, between Vista Ridge Road and Alteza Road 281 Comment
  UCR235513  Asclepias curassavica R. E. Riefner Jr. 2011-8-19 11- 100 Orange South Coast, city of Laguna Beach, bluff area west of West Street and Pacific Coast Highway 4 Comment
  UCR235514  Oncosiphon piluliferum R. E. Riefner Jr. 2011-5-20 11- 57 Orange South Coast, Newport Beach, Coastal Peak Park, East Coastal Peak Road at Ridge Park Road 305 Comment
  UCR235520  Geranium incanum var. multifidum R. E. Riefner Jr. 2007-4-28 07- 189 Orange South Coast, city of Newport Beach Newport Bay, North Star Beach, vicinity of Morning Star Lane 2 Comment
  UCR238457  Plecostachys serpyllifolia R. E. Riefner Jr. 2009-7-18 09- 151 Orange South Coast, city of Dana Point, beach near Salt Creek, vicinity of Ritz Carlton Resort 2.5 Comment
  UCR238458  Verbesina dissita R. E. Riefner Jr. 2010-5-17 10- 08 Orange South Coast, city of Laguna Niguel; Aliso Summit Hiking Trail c. 1/3 mi north heading from Pacific Island Drive/La Brise Ave. intersection between 1.75 mile marker post and 1.5 mile marker post 229 Comment
  UCR238459  Plecostachys serpyllifolia R. E. Riefner Jr. 2005-9-9 05- 654 Orange South Coast, city of Lake Forest, Aliso Creek, south side of Portola Parkway and west of El Toro Road 225 Comment
  UCR240164  Euphorbia misera R. E. Riefner Jr. 2012-12-5 12- 587 Orange South Coast, city of Dana Point, Dana Point Harbor, Dana Harbor Drive near Cove Road 9 Comment
  UCR240165  Quercus suber R. E. Riefner Jr. 2012-11-18 12- 555 Orange South Coast, city of Irvine, San Joaquin Wildlife Sanctuary, South Loop Trail, north of San Diego Creek, west of Campus Drive 8 Comment
  UCR240167  Pallenis maritima R. E. Riefner Jr. 2011-7-1 11- 79 A Orange South Coast, city of Laguna Beach, Aliso Creek Beach, rocky shore and bluff between Aliso Beach Park and West Street 7 Comment
  UCR240171  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2012-5-5 12- 85 Orange South Coast, city of San Clement, Antonio Parkway, c. 0.25 mi north of Hwy 74 88 Comment
  UCR240173  Ehrharta erecta R. E. Riefner Jr. 2012-2-1 12- 15 Orange South Coast, city of Dana Point, Dana Point Harbor, vicinity of Puerto Pl. and Dana Point Harbor Drive 2 Comment
  UCR240174  Euphorbia misera R. E. Riefner Jr. 2012-10-16 12- 518 Orange South Coast, city of Dana Point, Dana Point Harbor, 'Bluff Top Trail' located near Camino Capistrano and Violet Lantern Streets 35 Comment
  UCR240175  Adiantum capillus-veneris R. E. Riefner Jr. 2012-2-23 12- 43 Orange South Coast, city of Laguna Beach, Treasure Island Beach, vicinity of Wesley Drive and South Coast Hwy 1 Comment
  UCR240176  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr. 2012-9-23 12- 512 Orange city of Yorba Linda, Santa Ana Canyon, north side of Santa Ana River, La Palma Avenue at Via Del Rio Road 104 Comment
  UCR240177  Bacopa monnieri R. E. Riefner Jr. 2012-7-1 12- 295 Orange South Coast, city of Mission Viejo, Oso Creek, c. 1.3 mi north of Paseo de Colinas Ave. on Camino Capistrano Ave. 88 Comment
  UCR240180  Marsilea drummondii R. E. Riefner Jr. 2008-6-22 08- 209 Orange city of Yorba Linda, Santa Ana Canyon, Santa Ana River, La Palma Avenue near Old Village Road 96 Comment
  UCR240182  Juniperus rigida var. conferta R. E. Riefner Jr. 2011-7-1 11- 81 Orange South Coast, city of Newport Beach, beach area between Shorecliff Road and Cameo Shores Road 18 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
  UCR240184  Suaeda esteroa R. E. Riefner Jr. 2012-11-6 12- 533 Orange South Coast, city of Newport Beach, Newport Bay, North Star Beach, near Newport Aquatic Center, White Cliffs Drive/North Star Lane 2 Comment
  UCR240185  Ipomoea cairica R. E. Riefner Jr. 2012-11-27 12- 563 Orange South Coast, city of laguna Beach, South Crescent Beach, Circle Way near Cliff Drive 3 Comment
  UCR240186  Lycium californicum R. E. Riefner Jr. 2012-11-24 12- 558 Orange South Coast, city of San Clemente, Presidio Ave. c. 0.2 mi south of Ave. Pico 34 Comment
  UCR240187  Lagunaria patersonia R. E. Riefner Jr. 2011-6-29 11- 76 Orange South Coast, city of Laguna Beach, general area of Shaw's Cove, vicinity of Cliff Drive and Fairview Street 1 Comment
  UCR240189  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-12-5 12- 588 Orange South Coast, city of Dana Point, Dana Point Harbor, Dana Harbor Drive near Cove Road 9 Comment
  UCR240190  Oncosiphon piluliferum R. E. Riefner Jr. 2012-4-22 12- 71 Orange South Coast, city of Newport Beach, Newport Bay, Dover Shores, vicinity of West Wind Way and Santiago Drive 22 Comment
  UCR240191  Hypericum canariense R. E. Riefner Jr. 2010-6-9 10- 56 Orange city of San Juan Capistrano, La Novia Ave. at Valle Road 45 Comment
  UCR240193  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-26 12- 11 Orange South Coast, city of Laguna Beach, Aliso Creek Beach 2 Comment
  UCR240194  Cyrtomium falcatum R. E. Riefner Jr. 2012-2-2 12- 19 Orange South Coast, city of Dana Point, cliff and rocky intertidal area 0.2 mi north of Salt Creek Lagoon 9 Comment
  UCR240195  Cyrtomium falcatum R. E. Riefner Jr. 2012-1-16 12- 5 Orange South Coast, city of Newport Beach, Corona Del Mar, beach area west of Morning Canyon Road 1 Comment
  UCR240254  Atriplex amnicola R. E. Riefner Jr. 2006-2-12 06- 21 Orange South Coast, N end of City of San Clemente, along N-bound I-5, immediately S of Camino de Estrella exit ramp 66 Comment
  UCR240255  Echinochloa crus-pavonis R. E. Riefner Jr. 2006-9-16 s.n. Orange Yorba Linda, north of Chapman Ave. c. 1 mile along floodplain of Santa Ana River 98 Comment
  UCR241091  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-16 12- 404 Orange South Coast, City of Dana Point, Dana Point Harbor Drive at Island Way 11 Comment
  UCR241096  Geranium incanum var. multifidum R. E. Riefner Jr. 2012-6-30 12- 285 Orange South Coast, City of Costa Mesa, Talbert Regional Park, general vicinity of Balboa Blvd. and 19th St. 5 Comment
  UCR241098  Pallenis maritima R. E. Riefner Jr. 2012-5-25 12- 393 Orange South Coast, City of Dana Point, rocky shore between Mussel Cove and Salt Creek Beach 5 Comment
  UCR241100  Pallenis maritima R. E. Riefner Jr. 2010-1-2 10- 03 Orange South Coast, City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 2.5 Comment
  UCR241101  Pallenis maritima R. E. Riefner Jr. 2011-6-25 11- 74 Orange South Coast, city of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby Street 7 Comment
  UCR242861  Juglans nigra R. E. Riefner Jr. 2011-8-25 11- 115 Orange Trabuco Canyon, Trabuco Canyon Road c. 1 mi northwest of O'Neill Regional Park 319 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
  UCR246390  Iva hayesiana R. E. Riefner Jr. 2013-8-30 13- 206 Orange South Coast, city of Huntington Beach, north of Pacific Coast Hwy along the Santa Ana River Trail, west side Santa Ana River 7 Comment
  UCR246394  Juniperus rigida var. conferta R. E. Riefner Jr. 2012-10-21 12- 521 Orange South Coast, city of Newport Beach, Corona del Mar, c. 0.5 mi south from the intersection of Poppy Ave./Ocean Blvd. at Little Corona Beach 12 Comment
  UCR246397  Juglans hindsii R. E. Riefner Jr. 2013-11-6 13- 233 Orange South Coast, city of Laguna Beach, Laguna Canyon, north of Phillips Street on east side of Laguna Canyon Road 71 Comment
  UCR246398  Juglans hindsii R. E. Riefner Jr. 2010-9-8 10- 121 Orange South Coast, city of Laguna Beach, Laguna Canyon, c. 0.15 mi south of El Toro Road on east side of Laguna Canyon Road 75 Comment
  UCR246467  Paspalum vaginatum R. E. Riefner Jr. 2012-10-21 12- 523 Orange South Coast, city of Newport Beach, south of Poppy Street/Ocean Blvd, creek at base of stairs, Little Corona Beach 7 Comment
  UCR246471  Lagunaria patersonia R. E. Riefner Jr. 2004-12-23 04- 557 Orange South Coast, city of San Clemente, vicinity of San Clemente Pier at Ave. Del Mar 3 Comment
  UCR246472  Ipomoea purpurea R. E. Riefner Jr. 2012-9-7 12-504 Orange South Coast, city of Dana Point, Dana Point Harbor Drive, vicinity of Island Way 19 Comment
  UCR246473  Dimorphotheca fruticosa R. E. Riefner Jr. 2011-7-1 11- 79 B Orange South Coast, city of Newport Beach, beach area between Shorecliff Road and Cameo Shores Road 18 Comment
  UCR246474  Cordyline R. E. Riefner Jr. 2012-11-6 12- 532 Orange South Coast, city of Newport Beach, Newport Bay, North Star Beach, near Newport Aquatic Center, White Cliffs Drive/North Star Lane 9 Comment
  UCR246475  Limonium tataricum R. E. Riefner Jr. 2009-4-20 09- 33 Orange South Coast, Laguna Niguel, vicinity of Olympiad Road at Stoneridge Road 266 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
  UCR246481  Plagiobothrys acanthocarpus R. E. Riefner Jr. 2013-3-17 13- 44 Orange South Coast, city of Irvine, Jeffrey Trail, vicinity of Shady Canyon Dr. at Fossil Rd. 47 Comment
  UCR246483  Medicago truncatula R. E. Riefner Jr. 2011-5-20 11- 55 Orange South Coast, city of San Clemente, Avenida La Pata one block west of Calle Extremo at entrance to Richard Steed Memorial Park 161 Comment
  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
  UCR247450  Arctotheca prostrata R. E. Riefner Jr. 2013-7-6 13- 125 Orange South Coast, city of Irvine, Irvine Valley College, Irvine Center Drive near College Street 37 Comment
  UCR247452  Bahiopsis laciniata R. E. Riefner Jr. 2013-4-5 13- 56 Orange Anaheim Hills,vicinity of Hidden Canyon Road at Avenue De Santiago 305 Comment
  UCR247454  Erigeron karvinskianus R. E. Riefner Jr. 2013-1-16 13- 15 Orange South Coast, city of Newport Beach, vicinity of Poppy Ave. and Ocean Blvd., coastal bluff at Little Corona Beach 6 Comment
  UCR247477  Juglans hindsii R. E. Riefner Jr. 2011-4-22 11- 34 Orange South Coast, city of Laguna Beach, Laguna Canyon, Laguna Wilderness Park, Stagecoach Trail, c. 0.15 mi north of El Toro Road on west side of Laguna Canyon Road 86 Comment
  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
  UCR247507  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-4-28 07- 190 Orange South Coast, city of Newport Beach, Dover Beach, vicinity of Morning Star Lane and Polaris Drive 7 Comment
  UCR247510  Lasthenia glabrata subsp. glabrata R. E. Riefner Jr. 2013-3-10 13- 39 Orange city of lake Forest, along El Toro Road at Destry Road 211 Comment
  UCR247516  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-7-9 08- 220 Orange South Coast, Laguna Beach, bluff area west of West St and Pacific Coast Hwy 11 Comment
  UCR247555  Pennisetum villosum R. E. Riefner Jr. 2013-2-11 13- 41 Orange South Coast, Laguna Beach, vicinity of Pacific Coast Hwy and Montage Resort Drive 30 Comment
  UCR247557  Juglans hindsii R. E. Riefner Jr. 2013-11-6 13- 234 Orange South Coast, city of Laguna Beach, Laguna Canyon, north of Phillips Street on east side of Laguna Canyon Road 71 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
  UCR250330  Lycium brevipes R. E. Riefner Jr. 2012-6-22 12- 273 Orange city of Newport Beach, Corona del Mar, Little Corona Beach, vicinity of Poppy Ave. and Ocean Blvd. 4 Comment
  UCR251738  Bloomeria crocea var. crocea R. E. Riefner Jr. 2014-5-13 14- 120 Orange South Coast, 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
  UCR251740  Brodiaea filifolia R. E. Riefner Jr. 2014-5-13 14- 119 Orange South Coast, 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
  UCR251742  Deinandra paniculata R. E. Riefner Jr. 2014-6-3 14- 143 Orange City of Laguna Beach, Moulton Meadows, NE 0.1 mi. from Del Mar Ave. and Balboa Ave. along Mentally Sensitive Trail 266 Comment
  UCR251743  Lycium brevipes var. hassei R. E. Riefner Jr. 2014-4-12 14- 77 Orange South Coast, City of San Clemente, San Clemente State Beach, SSW c. 100 m from the intersection of Ave. Califia and South Ola Vista Rd. 40 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
  UCR251748  Lycium brevipes var. hassei R. E. Riefner Jr. 2006-3-19 06- 58 Orange South Coast, City of San Clemente, San Clemente State Beach, SSW c. 100 m from the intersection of Ave. Calafia and South Ola Vista Rd. 40 Comment
  UCR252705  Deinandra paniculata R. E. Riefner Jr. 2014-8-10 14- 279 Orange South Coast, city of San Clemente, Rancho San Clemente Trail, east c. 0.15 mi from Ave Salvador, and south c. 0.2 mi off Utility Access Road 202 Comment
  UCR252707  Deinandra fasciculata R. E. Riefner Jr. 2014-5-13 14- 123 Orange South Coast, 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
  UCR252708  Deinandra fasciculata R. E. Riefner Jr. 2014-6-3 14- 145 Orange City of Laguna Beach, Moulton Meadows, NE 0.1 mi. from Del Mar Ave. and Balboa Ave. along Mentally Sensitive Trail 266 Comment
  UCR253000  Lycium brevipes var. hassei R. E. Riefner Jr. 1995-3-19 95- 77 Orange South Coast, San Clemente State Beach 40 Comment
  UCR254221  Deinandra paniculata R. E. Riefner Jr. 2008-5-19 08- 100 Orange Ladera Ranch, Cecil Pasture at Jerome Road 157 Comment
  UCR254222  Deinandra paniculata R. E. Riefner Jr. 2013-8-16 13- 188 Orange South Coast, City of Dana Point, canyon west of Dana Hills High School, north of Stonehill Drive, east of Cortes Drive 86 Comment
  UCR256517  Deinandra fasciculata R. E. Riefner Jr. 2014-8-10 14- 281 Orange South Coast, city of San Clemente, Rancho San Clemente Trail, east c. 0.15 mi from Ave Salvador, and south c. 0.2 mi off Utility Access Road 202 Comment
  UCR256519  Centromadia parryi subsp. australis R. E. Riefner Jr. 2005-6-29 05- 516 Orange South Coast, City of Costa Mesa, Talbert Regional Park, immediately west of Discovery Dr. at Balboa Blvd., east of Santa Ana River 8 Comment
  UCR256520  Centromadia parryi subsp. australis R. E. Riefner Jr. 2014-8-28 14- 310 Orange South Coast, City of Costa Mesa, Talbert Regional Park, immediately west of Starfish Ct., east of the Santa Ana River 4 Comment
  UCR266147  Ficus rubiginosa R. E. Riefner Jr. 2014-2-24 14- 65 Orange South Coast, city of Dana Point, west c. 0.1 mi from Island Way along Dana Point Harbor Drive, cliff slope immediately south of Santa Clara Avenue and Amber Lantern Street 11 Comment
  UCR266153  Nephrolepis cordifolia R. E. Riefner Jr. 2014-6-14 14- 171 Orange South Coast, city of Newport Beach, Cliff Drive Park, along Cliff Drive near Beacon Street 44 Comment
  UCR266154  Nephrolepis cordifolia R. E. Riefner Jr. 2014-2-24 14- 64 Orange South Coast, city of Dana Point, west c. 0.1 mi from Island Way along Dana Point Harbor Drive, cliff slope immediately south of Santa Clara Avenue and Amber Lantern Street 11 Comment
  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
  UCR267277  Ficus microcarpa R. E. Riefner Jr. 2014-6-21 14- 186 Orange City of Laguna Beach, north side of North Coast Highway near intersection with Cliff Dr. 10 Comment
  UCR267278  Ficus microcarpa R. E. Riefner Jr. 2014-8-8 14- 273 Orange City of Laguna Beach, east side of South Coast Highway near Diamond St. 25 Comment
  UCR267279  Ficus microcarpa R. E. Riefner Jr. 2015-8-27 15- 359 Orange City of Newport Beach, Corona del Mar, on Marguerite Ave. between 5th Ave. and 4th Ave. 41 Comment
  UCR267288  Ficus microcarpa R. E. Riefner Jr. 2014-2-24 14- 66 Orange South Coast, city of Dana Point, west c. 0.1 mi from Island Way along Dana Point Harbor Drive, cliff slope immediately south of Santa Clara Avenue and Amber Lantern Street 11 Comment
  UCR269240  Psilotum nudum R. E. Riefner Jr. 2015-11-22 15- 453 Orange South Coast, city of Costa Mesa, east side of Orange County Fairground, Lot #A-5, west of Newport Blvd. and north of Fair Drive 32 Comment
  UCR269241  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2015-12-9 15- 458 Orange South Coast, Rancho Mission Viejo, east of San Juan Capistrano north of Antonio Parkway and north of Ortega Hwy 74, near Sendero Field Park 55 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
  UCR274558  Deinandra paniculata R. E. Riefner Jr. 2014-6-3 14- 144 Orange City of Laguna Beach, Moulton Meadows, NE 0.1 mi. from Del Mar Ave. and Balboa Ave. along Mentally Sensitive Trail 266 Comment
  UCR274870  Lycium brevipes var. brevipes R. E. Riefner Jr. 2012-1-16 12- 7 Orange South Coast, city of Newport Beach, Corona Del Mar, Buck Gully, near Little Corona Beach, vicinity of Poppy Ave. and Ocean Blvd., slope adjacent to restroom facility 15 Comment
  UCR277171  Chrysanthemoides monilifera subsp. monilifera R. E. Riefner Jr. 2012-2-22 12- 40 Orange South Coast, city of Laguna Beach, south of Goff Island, Montage Resort, Treasure Island Park area, west of Pacific Coast Hwy 7 Comment
  UCR277172  Eriobotrya japonica R. E. Riefner Jr. 2014-11-21 14- 390 Orange South Coast, city of Lake Forest, English Canyon, Aliso Creek, vicinity of Trabuco Road at Aliso Creek bridge crossing 146 Comment
  UCR280606  Polypodium californicum R. E. Riefner Jr. 2017-3-31 17- 137 Orange South Coast, city of San Clemente, San Clemente State Beach, northwest bluff area immediately south of Ave. Calafia 24 Comment
  UCR280608  Juglans hindsii R. E. Riefner Jr. 2015-11-21 15- 451 Orange South Coast, city of Orange, Irvine Regional Park, south end of Park, west of railroad track near Petting Zoo 165 Comment
  UCR281087  Atriplex R. E. Riefner Jr. 2006-8-8 06- 383 Orange City of Irvine, MacArthur Blvd. c. 0.2 mile south of Jamboree Rd. near Bonita Creek 12 Comment
  UCR281836  Atriplex R. E. Riefner Jr. 2006-10-21 06- 662 Orange South Coast, city of Irvine, MacArthur Blvd, c. 0.2 mile south of Jamboree Road, extendingto along Bonita Creek 12 Comment
  UCR281837  Ambrosia confertiflora R. E. Riefner Jr. 2017-8-23 17- 424 Orange South Coast, city of Huntington Beach, Harriet M. Wieder Regional Park, east of Pacific Coast Hwy, north side of Seapoint Street, opposite Cherryhill Drive Comment
  UCR281841  Parietaria judaica R. E. Riefner Jr. 2017-8-23 17- 430 Orange South Coast, city of Huntington Beach, Sunset Beach, along South Pacific Avenue, vicinity of 17th St. 4 Comment
  UCR281842  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2017-8-14 17- 408 Orange South Coast, city of San Juan Capistrano, San Juan Creek. Northeast from San Juan Creek Road and Camino Chico, opposite Blenheim Farms & Equestrian Center, south of Ortega Hwy 47 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
  UCR281940  Matricaria discoidea R. E. Riefner Jr. 2017-3-29 17- 117 Orange South Coast, San Clemente, San Clemente State Beach, North-central area, south of Ave. Calafia 39 Comment
  UCR282154  Limonium duriusculum R. E. Riefner Jr. 2017-3-10 17- 75 Orange South Coast, city of Mission Viejo, along Olympiad Road near intersection with Alicia Parkway 253 Comment
  UCR282155  Deschampsia danthonioides R. E. Riefner Jr. 2014-5-17 14- 127 Orange South Coast, city of Huntington Beach, east of Beach Blvd. and north of Adams Ave, along Coldwater Lane vicinity of Kingsdale Dr., Batlett Park 1 Comment
  UCR282159  Psilotum nudum R. E. Riefner Jr. 2017-1-15 17- 36 Orange South Coast, city of Newport Beach, Polaris Drive, south of Evening Star Drive, Westcliff Park, north side of Newport Bay 3 Comment
  UCR282160  Atriplex lindleyi R. E. Riefner Jr. 2017-4-10 17- 162 Orange South Coast, city of San Clemente, San Clemente State Beach, southwest bluff area, west of Concordia Elementary School 29 Comment
  UCR282164  Matricaria discoidea R. E. Riefner Jr. 2017-4-10 17- 164 Orange South Coast, city of San Clemente, San Clemente State Beach, southwest area, west of Concordia Elementary School 32 Comment
  UCSB69265  Artemisia californica Riefner, R. 2006-8-25 Orange City of Dana Point, Salt Creek Beach Park, vicinity of Dana Strand Rd. and Selva Rd.; USGS Quad: Dana Point; UTM: 11s (NAD 83) 0433601E 3702917N 1 Comment
  CDA1357  Salsola australis R. E. Riefner Jr. 2006-11-12 06 -558 Orange Newport Beach; Irvine Coast Trail at San Diego Creek, S of Jamboree Rd near SR-73 crossing. Comment
  CDA2882  Atriplex amnicola R. E. Riefner Jr. 2006-4-17 06 -155 Orange Upper Newport Bay, near Bayview Way and Bayview Place. Comment
  CDA2883  Atriplex amnicola R. E. Riefner Jr. 2006-8-6 06 -381 Orange City of Newport Beach, Newport Bay, Big Canyon Creek drainage near Back Bay Drive. Comment
  CDA3181  Salsola australis R. E. Riefner Jr. 2006-11-14 06 -672 Orange City of Irvine, San Diego Creek; vicinity of Campus Avenue at University Drive. Comment
  CDA34944  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-3-18 07 -153 Orange City of Newport Beach, Dover Beach, vicinity of Morning Star Lane and Polaris Drive. Comment
  CDA34952  Plecostachys serpyllifolia R. E. Riefner Jr. 2009-7-18 09 -151 Orange Dana Point; beach near Salt Creek, vicinity of Ritz Carlton Resort. Comment
  CDA5107  Callistemon viminalis R. E. Riefner Jr. 2006-11-14 06 -674 Orange City of Irvine, San Diego Creek; vicinity of Campus Avenue at University Drive. Comment
  CDA5108  Callistemon viminalis R. E. Riefner Jr. 2006-11-12 06 -669 Orange City of Newport Beach, urban creek draining into San Diego Creek at confluence with Newport Bay near SR-73 overpass. Comment
  CDA5109  Callistemon viminalis R. E. Riefner Jr. 2006-10-19 06 -559 Orange City of Newport Beach, Irvine Coast Trail at San Diego Creek, near SR-73 crossing, south of Jamboree Road. Comment
  CDA5113  Callistemon viminalis R. E. Riefner Jr. 2007-3-18 07 -113 Orange City of Newport Beach, south shore of Newport Bay along Back Bay Drive, ca. 1 mile north of San Joaquin Hills Road. Comment
  CDA5115  Callistemon viminalis R. E. Riefner Jr. 2007-3-18 07 -136 Orange City of Newport Beach, San Diego Creek near confluence with Newport Bay near SR 73 overpass. Comment
  CDA7469  Cotula hispida R. E. Riefner Jr. 2006-2-12 26 -Jun Orange City of San Clemente, north ca. 0.5 mile along the beach from Avenue Del Mar / San Clemente Pier area. Comment
  CHSC118879  Salsola australis R. E. Riefner Jr. 2007-1-20 07 -16 Orange City of Lake Forest, along Bake Pwky. At Dimension Rd. (NAD 83) 11S 0437348E 3725534N. 217 Comment
  HSC101878  Atriplex amnicola Rick E. Riefner Jr 2006-4-17 6155 Orange Upper Newport Bay, near Bayview Wy. and Bayview Pl. 7 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
  RSA0008328  Baccharis malibuensis R. E. Riefner Jr. 2007-6-22 07 -275 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 545 Comment
  RSA0008498  Verbesina dissita R. E. Riefner 1997-4-24 97 -150 Orange Laguna Beach, Pacific Island Drive, at La Brise Ave. Comment
  RSA0008500  Verbesina dissita R. E. Riefner Jr. 2010-5-17 10 -08 Orange City of Laguna Niguel; Aliso Summit Hiking Trail ca. 1/3 mi north heading from Pacific Island Drive/La Brise Ave. intersection between 1 3/4 mile marker post & 1 1/2 mile marker post. 229 Comment
  RSA0012593  Eucalyptus erythrocorys R. E. Riefner Jr. 2007-9-27 7 -414 Orange City Laguna Niguel, along Forbes Road near Crown Valley Parkway, W of I-5 Freeway. Comment
  RSA0019263  Dimorphotheca ecklonis R. E. Riefner 2000-3-14 20 -136 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Cyn.Road. 304 Comment
  RSA0026049  Mirabilis jalapa R. E. Riefner Jr. 1995-7-27 95 -325 Orange City of Santa Ana, W. 18th St and Main Street. Comment
  RSA0028737  Plantago pusilla R. E. Riefner 2000-3-14 20 -135 Orange NCCP North Ranch Policy Plan Area. Along dirt road running N from Baker Cyn.Road. 305 Comment
  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
  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
  RSA0038707  Juglans nigra R. E. Riefner Jr. 2011-8-25 11 -115 Orange Trabuco Canyon, Trabuco Canyon Road c. 1 mi northwest of O Neill Regional Park 319 Comment
  RSA0059633  Rorippa nasturtium-aquaticum R. E. Riefner Jr. 2003-11-30 03 -483 Orange Peters Canyon Channel at Alton St., E of the Jamboree Rd. near Irvine City Hall. 22 Comment
  RSA0066582  Harpagonella palmeri R. E. Riefner 1995-3-29 95 -62 Orange San Clemente State Beach. Comment
  RSA0066590  Harpagonella palmeri Richard E. Riefner Jr. 2000-4-28 20 -393 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road; NE of Windy Ridge. 533 Comment
  RSA0066597  Harpagonella palmeri R. E. Riefner Jr. 2000-4-27 20 -391 Orange NCCP North Ranch Policy Plan Area. Along dirt road running S from Baker Cyn. Road to Silverado Road. 335 Comment
  RSA0075812  Heterotheca grandiflora R. E. Riefner 2000-8-8 20 -716 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  RSA0080065  Juglans hindsii R. E. Riefner Jr. 2011-9-10 11 -124 Orange Santa Ana Canyon, I-91 northbound, S side of freeway, located within 100 ft of the Riverside County line. 127 Comment
  RSA0098428  Spergularia macrotheca var. macrotheca R. E. Riefner 1994-8-1 94 -567 Orange S end of San Clemente State Beach. Comment
  RSA0098429  Spergularia macrotheca var. leucantha R. E. Riefner 1996-3-28 96 -28 Orange San Clemente State Beach. Comment
  RSA0126163  Turritis glabra R. E. Riefner 1994-4-22 94 -342 Orange NE of Moulton Meadows along Nyes Place Road, Laguna Beach. Comment
  RSA581359  Hainardia cylindrica R. E. Riefner 1995-6-28 95 -256 Orange Along margins of vernal pools. Surf Beach, San Onofre State Beach. Comment
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Nov 19 2013
  RSA586252  Gastridium phleoides R. E. Riefner 1995-10-28 95 -383 Orange San Clemente State Beach Comment
  RSA586253  Gastridium phleoides R. E. Riefner 1994-9-6 95 -560 Orange San Clemente State Beach Comment
  RSA586740  Cryptantha clevelandii R. E. Riefner 1994-5-22 94 -379 Orange W Terrce area of San clemente State Beach along Calafia road. Comment
  RSA590719  Marsilea vestita R. E. Riefner 1994-4-15 94 -319 Orange Dana Hills, w ca 2 mi. of Cooks Reservoir Comment
  RSA592059  Elatine brachysperma R. E. Riefner 1994-4-15 94 -320 Orange Dana Hills NW of Cooks Reservoir. Comment
  RSA592065  Brodiaea jolonensis R. E. Riefner 1996-5-19 96 -89 Orange Pico Ave. near Coast Hwy. Comment
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Aug 15 2016
  RSA592066  Amaranthus deflexus R. E. Riefner 1995-7-27 95 -318 Orange S bluff area of San Clemente Beach. Comment
  RSA592105  Plantago virginica R. E. Riefner 1994-4-15 94 -324 Orange NE of cooks Reservoir, Dana Hills, City of Dana Point. Comment
  RSA593870  Atriplex lindleyi R. E. Riefner 1994-6-18 94 -427 Orange San Clemente State Beach Comment
  RSA602771  Verbesina encelioides R. E. Riefner 1994-8-1 94 -539 Orange City of Tustin, Enderlee Center Dr. and Vanderberg Lane Comment
  RSA603289  Navarretia hamata subsp. leptantha R. E. Riefner 1997-7-18 97 -240 Orange Near Fullerton Nature Park. Comment
  RSA603292  Duchesnea indica R. E. Riefner 1997-7-18 97 -239 Orange Near Fullerton Nature Park. Comment
  RSA603298  Stenotaphrum secundatum R. E. Riefner 1997-7-12 97 -233 Orange San Clemente State Beach Comment
  RSA617798  Psilocarphus brevissimus R. E. Riefner 1998-4-3 98 -252 Orange Newport back-bay, west of Jamboree Rd. Comment
  RSA626154  Petunia parviflora R. E. Riefner Jr. 1998-4-2 98 -245 Orange W of Talbot Park and NNE from Rte 1 and Prospect St. Comment
  RSA648661  Ribes californicum var. hesperium R. E. Riefner Jr. 2000-8-8 20 -720 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  RSA648662  Cyrtomium falcatum R. E. Riefner 2000-7-10 20 -640 Orange Newport Beach / Corona del Mar End of Poppy Street off Pacific coast Hwy. Comment
  RSA660593  Frangula californica subsp. cuspidata R. E. Riefner 2000-8-8 20 -718 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  RSA663155  Gnaphalium canescens subsp. beneolens R. E. Riefner 2000-8-8 20 -724 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  RSA663158  Hazardia squarrosa var. grindelioides R. E. Riefner 2000-8-3 20 -710 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road and Windy Ridge. 534 Comment
  RSA663161  Rhamnus californica R. E. Riefner 2000-8-3 20 -711 Orange NCCP North Ranch Policy Plan Area. E of Main Divide Road and Windy Ridge. 535 Comment
  RSA663164  Viola pedunculata R. E. Riefner 2000-4-27 20 -390 Orange NCCP North Ranch Policy Plan Area. Along dirt road running S from Baker Cyn. Road to Silverado Road. 335 Comment
  RSA663168  Symphoricarpos mollis R. E. Riefner 2000-8-8 20 -722 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  RSA663169  Solidago californica R. E. Riefner 2000-8-8 20 -723 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  RSA663211  Micropus californicus var. californicus R. E. Riefner 2000-4-27 20 -387 Orange NCCP North Ranch Policy Plan Area. Along dirt road running S from Baker Cyn. Road to Silverado Road. 335 Comment
  RSA671246  Atriplex amnicola R. E. Riefner 1999-5-22 99 -290 Orange City of Dana Point, beach west of Pacific Coast Hwy. South of Salt Creek near Ritz Carlton Hotel. 15 Comment
  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
  RSA689539  Artemisia biennis R. E. Riefner 2003-8-17 03 -330 Orange Costa Mesa, Talbert Regional Park, Discovery Walk Road and Balboa Avenue. 3 Comment
  RSA689541  Salicornia bigelovii R. E. Riefner 2003-8-17 3 -335 Orange Costa Mesa, marsh along Santa Ana River, west of Talbert Regional Park. 11 Comment
  RSA689546  Heterotheca sessiliflora subsp. echioides R. E. Riefner 2000-8-8 20 -715 Orange NCCP North Ranch Policy Plan Area. NE property; E slope of upper Fremont Cyn.; S of Donaldson Ranch area and S of powerline / National Forest boundary. 454 Comment
  RSA689547  Bassia hyssopifolia R. E. Riefner 2003-8-17 3 -332 Orange Costa Mesa, Talbert Regional Park, Discovery Walk Road and Balboa Avenue. 12 Comment
  RSA703024  Nasturtium officinale R. E. Riefner Jr. 2004-8-27 4 -392 [b] Orange City of Irvine, San Diego Creek at 405 freeway. 50 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
  RSA703124  Echinochloa crus-galli R. E. Riefner Jr. 2004-8-8 4 -371 Orange City of Anaheim, Santa Ana River bottom, E of 57 Freeway between Orangewood Street and Chapman Avenue. 41 Comment
  RSA703251  Atriplex suberecta R. E. Riefner Jr. 1999-5-22 4 -292 Orange City of Dana Point, west of Pacific Coast Hwy., vicinity of Salt Creek Park and Ritz Carlton Hotel. 15 Comment
  RSA703364  Arthrocnemum subterminale R. E. Riefner Jr. 2004-5-6 4 -172 Orange Newport Beach, north side of Pacific Coast Hwy., west of Bayside Drive near Newport Dunes Beach Club. 10 Comment
  RSA703385  Gnaphalium stramineum R. E. Riefner Jr. 2004-5-6 04 -173 Orange Newport Beach, north side of Pacific Coast Hwy., west of Bayside Drive near Newport Dunes Beach Club. 10 Comment
  RSA703387  Atriplex californica R. E. Riefner Jr. 2004-5-6 4 -170 Orange Newport Beach, north side of Pacific Coast Hwy., west of Bayside Drive near Newport Dunes Beach Club. 10 Comment
  RSA703388  Nasturtium officinale R. E. Riefner Jr. 2003-11-30 3 -483 Orange Peters Canyon Channel at Alton St., E of Jamboree Rd. near Irvine City Hall. 22 Comment
  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
  RSA703643  Nasturtium officinale R. E. Riefner Jr. 2003-11-30 3 -482 Orange Peters Canyon Channel at Alton St., E of Jamboree Rd. near Irvine City Hall. 22 Comment
  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
  RSA713393  Crypsis schoenoides R. E. Riefner 2005-10-5 5 -706 Orange City of Yorba Linda, Santa Ana River bottom, N flood plain, near Yorba Linda Regional Park. 98 Comment
  RSA713565  Bromus inermis subsp. inermis R. E. Riefner Jr. 2005-10-1 5 -702 Orange City of Costa Mesa, South Coast Dr. at Susan Rd. 16 Comment
  RSA713566  Schedonorus arundinaceus R. E. Riefner Jr. 2005-10-1 5 -701 Orange City of Costa Mesa, South Coast Dr. at Susan Rd. 16 Comment
  RSA713568  Echinochloa crus-galli R. E. Riefner Jr. 2005-7-9 5 -552 Orange City of Huntington Beach, Huntington Central Park, Goldenwest St. near Slater Ave. 2 Comment
  RSA713577  Rumex crispus R. E. Riefner Jr. 2005-7-9 5 -550 Orange City of Mission Viejo, Oso Creek, ca. 0.5 mi N of Paseo De Colinas on Camino Capistrano. 86 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
  RSA714451  Malacothrix saxatilis var. saxatilis R. E. Riefner 1999-8-21 99 -360 Orange Laguna Beach, west of Pacific Coast Hwy., vicinity of Aliso Creek Park and south to West Drive. 0 Comment
  RSA717518  Parietaria judaica R. E. Riefner 2006-5-21 6 -199 Orange City of Huntington Beach, Beach Blvd. at MacDonald St. 6 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
  RSA719470  Lycium brevipes R. E. Riefner Jr. 2006-9-6 06 -419 Orange City of Corona del Mar, vicinity of Poppy Ave. and Ocean Blvd. 4 Comment
  RSA719471  Lycium brevipes R. E. Riefner Jr. 2004-12-23 04 -558 Orange City of San Clemente, vicinity of San Clemente Pier at Ave. Del Mar. 3 Comment
  RSA722086  Melaleuca nesophila R. E. Riefner Jr. 2007-3-18 7 -151 Orange City of Newport Beach, N shore of Newport Bay, North Star Beach, general vicinity of North Star Ln. and Polaris Dr. 9 Comment
  RSA722089  Isocoma menziesii var. vernonioides R. E. Riefner 2004-9-18 04 -425 Orange City of Yorba Linda; Santa Ana River, Horseshoe Bend, near La Palma Rd. and Via Del Rio Rd. 105 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
  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
  RSA723482  Salsola tragus R. E. Riefner 2007-1-20 7 -16 Orange City of Lake Forest, along Bake Pwky. at Dimension Rd. 217 Comment
  RSA723483  Amaranthus blitum subsp. emarginatus R. E. Riefner 2004-8-8 4 -370 Orange City of Anaheim, Santa River bottom near 57-Freeway between Orangewood St. and Chapman Ave. 41 Comment
  RSA723485  Euthamia occidentalis R. E. Riefner 2006-11-12 06 -666 Orange City of Newport Beach, urban creek draining into San Diego Creek at confluence with Newport Bay; San Diego Creek at SR-73 overpass. 6 Comment
  RSA723486  Limonium duriusculum R. E. Riefner 2005-11-23 5 -772 Orange City of Newport Beach, Newport Bay, Bay View Dr. at Jamboree Rd. 6 Comment
  RSA723487  Limonium duriusculum R. E. Riefner 2005-9-9 5 -654 Orange City of Lake Forest, Aliso Creek near Portola Pkwy. at El Torro Rd. 225 Comment
  RSA723489  Limonium duriusculum R. E. Riefner 2006-11-12 6 -67 Orange City of Newport Beach, San Diego Creek near confluence with Newport Bay near SR73 overpass. 6 Comment
  RSA723490  Echinochloa crus-galli R. E. Riefner 2005-7-9 5 -552 Orange City of Huntington Beach, Huntington Central Park, Goldenwest St. near Slater Ave. 1 Comment
  RSA723491  Limonium duriusculum R. E. Riefner 2005-10-5 5 -707 Orange City of Irvine, Bonita Creek, along La Salud St. near Milano Dr. 9 Comment
  RSA723962  Callistemon viminalis R. E. Riefner Jr. 2006-11-12 06 -559 Orange City of Newport Beach, Irvine Coast Trail at San Diego Creek, near SR-73 crossing, S of Jamboree Rd. 3 Comment
  RSA723963  Callistemon viminalis R. E. Riefner Jr. 2006-11-12 06 -669 Orange City of Newport Beach, urban creek draining into San Diego Creek at confluence with Newport Bay; San Diego Creek at SR-73 overpass. 6 Comment
  RSA723966  Lemna gibba R. E. Riefner 2005-10-27 05 -730 Orange City of Huntington Beach, Huntington Central Park near Goldenwest St. 1 Comment
  RSA723970  Epilobium brachycarpum R. E. Riefner Jr. 2005-10-5 05 -705 Orange City of Yorba Linda; Santa Ana River, Horseshoe Bend, near La Palma Rd. and Via Del Rio Rd. 99 Comment
  RSA724030  Callistemon viminalis R. E. Riefner Jr. 2006-11-14 6 -674 Orange City of Irvine, San Diego Creek; vicinity of Campus Ave. at University Dr. 5 Comment
  RSA724032  Panicum dichotomiflorum subsp. dichotomiflorum R. E. Riefner 2005-10-27 5 -735 Orange City of Yorba Linda, Santa Ana River near Yorba Linda Regional Park. 98 Comment
  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
  RSA724034  Elymus repens R. E. Riefner 2005-10-1 5 -704 Orange City of Costa Mesa, South Coast Dr. at Susan Rd. 16 Comment
  RSA724035  Ranunculus arvensis R. E. Riefner 2000-4-2 0 -166 Orange Santiago Equestrian Center, Santiago Canyon Rd., N 0.5 m from Ridgeline Rd., Oso Creek drainage. 392 Comment
  RSA724036  Ranunculus arvensis R. E. Riefner 2000-5-2 0 -412 Orange Vicinity of Trabuco Canyon Rd. and Rose Canyon Rd. along Trabuco Creek. 312 Comment
  RSA724038  Lepidium strictum R. E. Riefner 2002-7-26 2 -108 Orange City of Laguna Beach, Moulton Meadows Park, near Balboa Ave. and Del Mar Ave. 254 Comment
  RSA724039  Ehrharta erecta R. E. Riefner 2004-5-31 4 -194 Orange City of Lake Forest; Serrano Creek, SE of Bake Pkwy. 107 Comment
  RSA724040  Cenchrus longispinus R. E. Riefner 2004-8-27 4 -387 Orange City of Irvine; San Diego Creek at Woodbridge High School, S of intersection of Barranca Rd. and West Yale Loop Rd. 27 Comment
  RSA724041  Amaranthus blitum subsp. emarginatus R. E. Riefner 2004-8-8 4 -370 Orange City of Anaheim, Santa River bottom near 57-Freeway between Orangewood St. and Chapman Ave. 41 Comment
  RSA724044  Bidens frondosa R. E. Riefner 2004-9-18 04 -420 Orange City of Yorba Linda; Santa Ana River, Horseshoe Bend, near La Palma Rd. and Via Del Rio Rd. 106 Comment
  RSA724046  Lepidium oblongum var. oblongum R. E. Riefner 1998-5-15 98 -331 Orange San Clemente State Beach, mima mound field in SW corner of park. 30 Comment
  RSA724049  Ehrharta erecta R. E. Riefner 1994-5-23 94 -387 Orange City of Seal Beach, San Gabriel River at River's End Cafe, First St. and Ocean Blvd. 3 Comment
  RSA724054  Deinandra paniculata R. E. Riefner 2003-8-31 03 -337 Orange San Clemente State Beach, mima mound field in SW corner of park. 27 Comment
  RSA724055  Deinandra paniculata R. E. Riefner 1994-9-6 94 -552 Orange City of Dana Point, Dana Hills, vicinity of Dana Hills High School. 27 Comment
  RSA724056  Deinandra paniculata R. E. Riefner 2001-7-28 01 -375 Orange City of Laguna Beach, vicinity of Moulton Meadows Park. Comment
  RSA724057  Holocarpha virgata subsp. elongata R. E. Riefner 2003-10-14 03 -421 Orange San Clemente State Beach, mima mound field in SW corner of park. 27 Comment
  RSA724058  Populus balsamifera subsp. trichocarpa R. E. Riefner 2007-6-12 7 -253 Orange City of San Juan Capistrano. Vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek 152 Comment
  RSA724060  Paspalum urvillei R. E. Riefner 2005-11-4 5 -742 Orange City of Lake Forest, Alton Pkwy. at Bertea Rd. 123 Comment
  RSA724061  Paspalum urvillei R. E. Riefner 2005-11-4 5 -742 Orange City of Lake Forest, Alton Pkwy. at Bertea Rd. 123 Comment
  RSA724062  Amaranthus blitum subsp. emarginatus R. E. Riefner 2004-8-8 4 -370 Orange City of Anaheim, Santa River bottom near 57-Freeway between Orangewood St. and Chapman Ave. 41 Comment
  RSA724071  Amaranthus blitum subsp. emarginatus R. E. Riefner 2005-7-9 5 -546 Orange City of Huntington Beach, Huntington Central Park at Goldenwest St. 1 Comment
  RSA724072  Amaranthus blitum subsp. emarginatus R. E. Riefner 2006-9-30 6 -458 Orange City of Irvine, San Diego Creek at Alton Pkwy. 45 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
  RSA724074  Ehrharta erecta R. E. Riefner 1999-8-21 99 -362 Orange Laguna Beach, west of Pacific Coast Hwy., vicinity of Aliso Creek Park and south to West Drive. 0 Comment
  RSA724080  Salvinia molesta Richard E. Riefner 2005-5-5 5 -304 Orange City of Irvine, along Jeffrey Rd. N of Barranca Rd. 47 Comment
  RSA724121  Salvinia molesta Richard E. Riefner 2005-9-30 5 -700 Orange City of Huntington Beach, Huntington Central Park at Goldenwest St. 1 Comment
  RSA728656  Cotula hispida R. E. Riefner 2006-2-12 06 -26 Orange City of San Clemente, N ca. 0.5 mi. along the beach from Ave. Del Mar/ San Clemente area. 3 Comment
  RSA728657  Isocoma menziesii var. vernonioides R. E. Riefner 2006-10-24 04 -449 Orange City of Costa Mesa; E of Santa Ana River, NW 0.2 mi from Balboa Blvd and 19th St. 10 Comment
  RSA728658  Aeonium haworthii R. E. Riefner 2006-8-26 06 -377 Orange City of Laguna Beach, bluffs along Aliso Creek, N slope of Aliso Peak, Pacific Coast Hwy., E. of Aliso Beach. Aliso Beach County Park. 12 Comment
  RSA728668  Salsola tragus R. E. Riefner 2006-10-19 6 -558 Orange City of Newport Beach, Irvine Coast Trail at San Diego Creek, near SR-73 crossing, S of Jamboree Rd. 3 Comment
  RSA728671  Salsola tragus R. E. Riefner 2006-11-14 6 -672 Orange City of Irvine, San Diego Creek; vicinity of Campus Ave. at University Dr. 5 Comment
  RSA728672  Salsola tragus R. E. Riefner 2007-1-20 7 -16 Orange City of Lake Forest, along Bake Pwky. at Dimension Rd. 217 Comment
  RSA731529  Plecostachys serpyllifolia R. E. Riefner 2007-4-28 07 -190 Orange City of Newport Beach, Dover Beach, vicinity of Morning Star Ln. and Polaris Dr. 8 Comment
Read comments
Dec 13 2012
  RSA731530  Plecostachys serpyllifolia R. E. Riefner 2006-7-26 06 -319 Orange City of Irvine, along N side of Irvine Blvd. at SR 133 on-ramp. 62 Comment
Read comments
Dec 13 2012
  RSA731531  Euphorbia misera R. E. Riefner 2008-3-24 08 -62 Orange City of Dana Point, Dana Point Harbor, along Dana Point Harbor Dr. at Island Way. 12 Comment
  RSA731542  Navarretia prostrata R. E. Riefner 1998-5-5 98 -326 Orange San Clemente State Beach, mima mound field in SW corner of park. 27 Comment
  RSA737231  Atriplex amnicola R. E. Riefner 2006-5-7 06 -178 Orange N end of City of San Clemente, along I5, N side, immediately S of Camino De Estrella exit ramp. 66 Comment
  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
  RSA737233  Atriplex amnicola R. E. Riefner 2006-2-12 06 /21/2015 Orange N end of City of San Clemente, along I5 N, immediately S of Camino de Estrella exit ramp. 66 Comment
  RSA737235  Calandrinia breweri R. E. Riefner 2008-4-15 08 -70 Orange Irvine Ranch Reserve, North Irvine Ranch, S of Windy Ridge Rd. ca. 0.5 mi from West Forst of upper Fremond Canyon. 496 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
  RSA737241  Atriplex glauca R. E. Riefner 2006-3-19 06 /01/1952 Orange City of Newport Beach, near Avocado Ave, and San Nicolas Dr. W of McAthur Blvd. 77 Comment
  RSA737242  Atriplex amnicola R. E. Riefner 2005-9-16 05 -666 Orange Upper Newport Bay, E of Bayside Dr. at confluence with Big Canyon. 6 Comment
  RSA737243  Atriplex amnicola R. E. Riefner 2006-4-17 06 -155 Orange Upper Newport Bay, near Bayview Wy and Bayview Pl. 7 Comment
  RSA737245  Calandrinia breweri R. E. Riefner 2008-3-5 08 -31 Orange Irvine Ranch Reserve, North Irvine Ranch, S of Windy Ridge Rd. ca. 0.5 mi from West Fork of upper Fremont Canyon. 496 Comment
  RSA737374  Atriplex R. E. Riefner 2006-10-19 06 -546 Orange City of Lake Forest, 0.5 mile N of Alton Pwy on E side of SR 241. 230 Comment
  RSA737375  Atriplex amnicola R. E. Riefner 2006-5-7 06 -180 Orange N end of City of San Clemente, along I5, N side, immediately S of Camino De Estrella exit ramp. 66 Comment
  RSA737473  Atriplex amnicola R. E. Riefner 2006-8-6 6 -381 Orange City of Newport Beach, Newport Bay, Big Canyon Creek drainage near Back Bay Dr. 9 Comment
  RSA737475  Atriplex R. E. Riefner 2008-3-24 8 -67 Orange City of Seal Beach, Bolsa Chica Salt Marsh, Warner Ave. at Pacific Coast Highway. 5 Comment
  RSA737477  Atriplex R. E. Riefner 2007-10-26 7 -453 Orange City of Laguna Niguel, Laguna Niguel Regional Park, Sulphur Creek Reservoir, near La Paz Rd. and Kings Rd. 62 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
  RSA737846  Calandrinia breweri R. E. Riefner 2008-4-15 08 -72 Orange Irvine Ranch Reserve, North Irvine Ranch, western middle Freemont Canyon area, Coalmine SCE Rd. 353 Comment
  RSA737849  Atriplex R. E. Riefner 2006-10-19 06 -546 Orange City of Lake Forest, 0.5 mile N of Alton Pwy on E side of SR 241. 230 Comment
  RSA737850  Atriplex R. E. Riefner 2006-10-2 06 -466 Orange City of Lake Forest, N of Portola Pwy and immediately W of SR 241 freqay at avocado orchard, vicinity of Tomato Spring. 206 Comment
  RSA737854  Atriplex glauca R. E. Riefner 2006-3-19 06 /01/1952 Orange City of Newport Beach, near Avocado Ave, and San Nicolas Dr. W of McAthur Blvd. 77 Comment
  RSA737855  Salix lucida subsp. lasiandra R. E. Riefner 2008-5-20 8 -108 Orange Irvine Ranch Reserve, North Irvine Ranch, S Donaldson Ranch ca. 0.75 mi along West Fork of upper Fremont Canyon. 405 Comment
  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
  RSA737889  Antirrhinum multiflorum R. E. Riefner 2007-6-29 07 -286 Orange Irvine Ranch Reseve, N Irvine Ranch, E Fork cliffs at upper Fremont Canyon along Black Star SCE road. 579 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
  RSA739272  Cyperus retrorsus R. E. Riefner 2007-9-14 07 -396 Orange Orange County: City of Orange, Santa Ana River at Taft St. alt 196ft 60 Comment
  RSA741472  Buddleja davidii R. E. Riefner Jr. 2008-5-22 8 -116 Orange Near City of Orange, Santiago Creek, vicinity of Jackson Ranch Rd. at Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
  RSA741473  Trifolium obtusiflorum R. E. Riefner 2008-5-30 08 -126 Orange Near City of Orange, Santiago Creek, vicinity of Jackson Ranch Rd. at Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. 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
  RSA741475  Phacelia cicutaria var. hubbyi R. E. Riefner Jr. 2008-5-30 8 -123 Orange Near City of Orange, Santiago Creek, vicinity of Jackson Ranch Rd. at Santiago Creek Rd., near the power-line crossing, Irvine Ranch Reserve, Management Area 15. Comment
  RSA741477  Atriplex halimus R. E. Riefner 2008-12-23 8 -375 Orange City of Laguna Beach, S Crescent Bay, Cliff Dr. at Circle Way. 5 Comment
  RSA741478  Nerium oleander R. E. Riefner 2008-5-30 8 -124 Orange Near City of Orange, Santiago Creek, vicinity of Jackson Ranch Rd. , at Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
  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
  RSA741480  Chrysanthemum coronarium R. E. Riefner 2008-5-22 09 -113 Orange Near City of Orange, Santiago Creek, vicinity of Hangman's Tree Canyon, Santiago Creek Rd., Irvine Ranch Reserve, Management Area 15. Comment
  RSA741695  Atriplex glauca R. E. Riefner Jr. 2009-1-2 09 /04/2015 Orange City of Newport Beach, Upper Newport Bay, vicinity of Irvine Ave. and Santiago Dr. 10 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
  RSA741698  Baccharis malibuensis R. E. Riefner Jr. 2008-6-25 08 -171 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, power line access road off Lakeview SCE Rd. 495 Comment
  RSA741699  Baccharis malibuensis R. E. Riefner Jr. 2008-7-17 08 -239 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 574 Comment
  RSA741700  Baccharis malibuensis R. E. Riefner Jr. 2008-7-17 08 -241 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 600 Comment
  RSA741701  Baccharis malibuensis R. E. Riefner Jr. 2008-7-2 08 -181 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Black Star SCE Rd. 660 Comment
  RSA741704  Mentzelia micrantha R. E. Riefner Jr. 2007-6-11 07 -252 Orange Santa Ana Mtns., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, upper Fremont Canyon, Donaldson Ranch area. 382 Comment
  RSA741718  Ericameria cuneata var. cuneata R. E. Riefner 2007-6-29 07 -285 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 613 Comment
  RSA741719  Ericameria cuneata var. cuneata R. E. Riefner 2008-6-3 08 -135 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 641 Comment
  RSA741720  Romneya coulteri R. E. Riefner 2008-3-20 8 -106 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W fork Fremont Canyon, S Donaldson Ranch area. 380 Comment
  RSA741721  Phacelia cicutaria var. hubbyi R. E. Riefner Jr. 2008-6-3 8 -143 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, N Fremont Canyon, slope NE of Donaldson Ranch area. 444 Comment
  RSA741722  Pseudognaphalium leucocephalum R. E. Riefner 2008-8-5 08 -259 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, lower Fremont Canyon, main drainage. 223 Comment
  RSA741723  Lepechinia cardiophylla R. E. Riefner Jr. 2008-3-21 8 -59 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fremont Canyon, Windy Ridge S to W fork canyon habitat. 463 Comment
  RSA741724  Lepechinia cardiophylla R. E. Riefner Jr. 2008-6-12 8 -152 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fremont Canyon, Windy Ridge S to W fork canyon habitat. 515 Comment
  RSA741728  Phacelia cicutaria var. hubbyi R. E. Riefner Jr. 2007-6-14 7 -257 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fremont Canyon, Windy Ridge area. 478 Comment
  RSA741729  Dudleya multicaulis R. E. Riefner 2008-3-5 08 -30 Orange Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E Fremont Canyon, lower Lakeview SCE Rd. 274 Comment
  RSA741730  Pentachaeta aurea subsp. allenii R. E. Riefner 2008-6-25 08 -169 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east Fremont Canyon, Lakeview SCE Road. 480 Comment
  RSA743558  Atriplex glauca R. E. Riefner 2006-2-1 6 -30 Orange City of Newport Beach, W side of MacArthur Blvd. near San Joaquin St. 75 Comment
  RSA743559  Atriplex glauca R. E. Riefner 2002-5-4 2 -88 Orange City of Newport Beach, Upper Newport Bay, general vicinity of Bayview Wy. and Bayview Pl. 7 Comment
  RSA743560  Atriplex glauca R. E. Riefner 2002-5-4 2 -89 Orange City of Newport Beach, E of Newport Bay, E of Back Bay Dr. near Big Canyon Creek. 2 Comment
  RSA743658  Atriplex glauca R. E. Riefner Jr. 2007-8-22 7 -370 Orange Ladera Ranch/San Juan Capistrano area, Antonio Pkwy. ca. 0.6 miles S of Covenant Hills Rd. 170 Comment
  RSA743659  Atriplex glauca R. E. Riefner Jr. 2006-3-19 6 -52 Orange City of Newport Beach, near Avocado Ave. and San Nicolas Dr. 77 Comment
  RSA743660  Atriplex glauca R. E. Riefner 2007-1-22 7 -20 Orange City of San Juan Capistrano, San Juan Creek at Hwy. 74. 56 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
  RSA743663  Atriplex R. E. Riefner 2006-9-6 6 -425 Orange City of Newport Beach, Newport Bay, Big Canyon Creek drainage near Back Bay Dr. 9 Comment
  RSA743664  Atriplex R. E. Riefner 2006-8-6 6 -382 Orange City of Newport Beach, Newport Bay, Big Canyon Creek drainage near Back Bay Dr. 9 Comment
  RSA743665  Atriplex amnicola R. E. Riefner 2007-9-11 7 -378 Orange City of San Juan Capistrano, vicinity of San Juan Creek road and Paseo Christina. 34 Comment
  RSA743666  Atriplex amnicola R. E. Riefner 2007-10-26 7 -455 Orange City of San Clemente, vicinity of Calle Vicente and Ave. Vaquero. 40 Comment
  RSA743667  Atriplex amnicola R. E. Riefner 2008-5-25 8 -111 Orange City of San Clemente, vicinity of Camino de Los Mares and Calle Nuevo. 45 Comment
Read comments
Aug 26 2013
  RSA743668  Atriplex amnicola R. E. Riefner 2007-8-4 7 -344 Orange City of San Juan Capistrano, San Juan Creek, ca. 0.2 mi W of intersection of Paseo Tirador and Calle Arroyo St. 31 Comment
  RSA746471  Medicago rigidula R. E. Riefner Jr. 2007-3-18 07 -150 Orange City of San Juan Capistrano, San Juan Creek Rd. at San Juan Creek Circle. USGS quad: San Juan Capistrano 24 Comment
  RSA746472  Acourtia microcephala R. E. Riefner Jr. 2008-5-13 08- 76 -a Orange Near City of Orange, W side of Hicks Haul Rd., Irvine Ranch Reserve, Management Area 11. Comment
  RSA746473  Medicago truncatula R. E. Riefner Jr. 2007-4-12 07 -178 Orange City of Orange, SW portion of Irvine Regional Park; Irvine Park Rd. 188 Comment
  RSA746474  Medicago truncatula R. E. Riefner Jr. 2008-5-13 08- 76 -b Orange Near City of Orange, W side of Hicks Haul Rd., Irvine Ranch Reserve, Management Area 11. 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
  RSA746476  Medicago truncatula R. E. Riefner Jr. 2007-4-12 07 -178 Orange City of Orange, SW portion of Irvine Regional Park; Irvine Park Rd. 188 Comment
  RSA746477  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
  RSA746478  Medicago truncatula R. E. Riefner Jr. 2008-3-24 08 -64 Orange Rancho Santa Margarita, Tijeras Canyon, N ca. 0.5 mi from Meandering Trails Rd. on Antonio Pkwy. 221 Comment
  RSA746479  Medicago truncatula R. E. Riefner Jr. 2007-4-1 07 -166 Orange City of Laguna Niguel, Laguna Niguel Regional Park, general vicinity of La Paz Rd. at Aliso Creek. 70 Comment
  RSA746480  Medicago truncatula R. E. Riefner Jr. 2007-4-1 07 -168 Orange City of Laguna Niguel, Laguna Niguel Regional Park, general vicinity of La Paz Rd. at Aliso Creek. 63 Comment
  RSA746481  Medicago rigidula R. E. Riefner Jr. 2008-5-22 08 -120 Orange Unincorporated land between the Cities of Lake Forest nd Rancho Santa Margarita, El Toro Rd., near Meadow Ridge Dr. 362 Comment
  RSA746482  Medicago rigidula R. E. Riefner Jr. 2008-5-19 08 -99 Orange City of San Juan Capistrano, 0.2 mi E of Antonio Pkwy on Hwy 74 (Ortega Hwy) 88 Comment
  RSA746483  Medicago rigidula R. E. Riefner Jr. 2008-5-12 08 -75 Orange Ladera Ranch, Cecil Pasture at Jerome Rd. 157 Comment
  RSA746484  Medicago rigidula R. E. Riefner Jr. 2008-5-1 08 -73 Orange City of San Juan Capistrano, San Juan Creek area, ca. 0.2 mi W of intersection of Paseo Tirador and Calle Arroyo St. 31 Comment
  RSA746516  Medicago rigidula R. E. Riefner Jr. 2007-4-1 07 -165 Orange City of Laguna Niguel, Laguna Niguel Regional Park, general vicinity of La Paz Rd. at Aliso Creek. 70 Comment
  RSA751398  Pholistoma racemosum R. E. Riefner Jr. 2008-5-20 8 -107 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fork of Fremont Canyon, S of Donaldson Ranch. 377 Comment
  RSA751399  Allophyllum divaricatum R. E. Riefner Jr. 2007-6-11 07 -252 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, upper Fremont Canyon, Donaldson Ranch area. 389 Comment
  RSA751402  Hieracium argutum R. E. Riefner Jr. 2008-6-25 08 -179 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, east fork of Fremont Canyon, Black Star SCE Rd. 623 Comment
  RSA751403  Hieracium argutum R. E. Riefner Jr. 2008-6-3 08 -136 Orange Santa Ana Mts., Irvine Ranch Reserve, Fremont Canyon Conservation Easement, E fork Fremont Canyon, Black Star SCE Rd. 641 Comment
  RSA751406  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-4-28 07 -190 Orange City of Newport Beach, Dover Beach, vicinity of Morning Star Ln., and Polaris Dr. 8 Comment
  RSA751411  Plecostachys serpyllifolia R. E. Riefner Jr. 2006-7-26 06 -319 Orange City of Irvine, along N side of Irvine Blvd. at SR 133 on-ramp. 62 Comment
  RSA751480  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08 -308 Orange City of Laguna Beach, ocean bluff vicinity of West St. and Pacific Coast Highway. 4 Comment
  RSA751481  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08 -312 Orange City of Laguna Beach, ocean bluff vicinity of West St. and Pacific Coast Highway. 5 Comment
  RSA765878  Plecostachys serpyllifolia R. E. Riefner Jr. 2006-7-26 06 -319 Orange City of Irvine, N side of Irvine Blvd. at SR-133 on-ramp. 64 Comment
  RSA765879  Plecostachys serpyllifolia R. E. Riefner Jr. 2005-9-9 05 -654 Orange City of Lake Forest, Aliso Creek, S side of Portola Pkwy. and W of El Toro Rd. 225 Comment
  RSA765880  Salix lucida subsp. lasiandra R. E. Riefner Jr. 2009-11-9 09 -243 Orange City of Yorba Linda, Santa Ana Canyon, Santa Ana River bottom, E of Weir Canyon Rd., between Horseshoe Bend and vicinity of La Palma Ave. and Mercado del Rio. 102 Comment
  RSA766068  Plecostachys serpyllifolia R. E. Riefner Jr. 2007-3-18 07 -153 Orange City of Newport Beach, Dover Beach, Newport Bay, vicinity of Morning Star Ln. and Polaris Dr. 3 Comment
  RSA766076  Plecostachys serpyllifolia R. E. Riefner Jr. 2004-12-30 04 -681 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Hwy. 4 Comment
  RSA766077  Plecostachys serpyllifolia R. E. Riefner Jr. 2008-10-22 08 -312 Orange City of Laguna Beach, vicinity of West St. and Pacific Coast Hwy. 4 Comment
  RSA782381  Juglans hindsii R. E. Riefner Jr. 2009-8-12 9 -168 Orange Foothills of Santa Ana Mts, near Silverado, Cook s Corner area. Santiago Canyon Road at Lawrence Canyon Road. 335 Comment
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Dec 14 2012
  RSA785449  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-6-25 11 -71 Orange city of Laguna Beach, Woods Cove, vicinity of Ocean Way at Pearl Street 9 Comment
  RSA790107  Juglans hindsii R. E. Riefner Jr. 2011-8-25 11 -114 Orange Trabuco Canyon, Trabuco Canyon Rd. ca. 1 mi NW of O Neill Regional Park. 319 Comment
  RSA790108  Juglans hindsii R. E. Riefner Jr. 2011-8-25 11 -112 Orange Trabuco Canyon, Trabuco Canyon Rd. ca. 1 mi NW of O Neill Regional Park. 319 Comment
  RSA790114  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-7-7 11 -73 Orange City of Laguna Beach, Moss Point, vicinity of Ocean Way at Ruby St. 5 Comment
  RSA790115  Plecostachys serpyllifolia R. E. Riefner Jr. 2011-7-7 11 -88 Orange City of Dana Point, S. of Mussel Cove, N. of Salt Creek Beach. 5 Comment
  RSA791806  Soleirolia soleirolii R. E. Riefner Jr. 2011-7-1 11 -84 Orange City of Newport Beach, beach area west of the end of Cameo Shores Road; south ca. 1.5 miles from Poppy Ave. 2 Comment
  RSA791809  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2011-10-19 11 -147 Orange City of San Juan Capistrano, San Juan Creek, ca. 0.2 miles west of intersection of Paseo Tirador and Calle Arroyo St. 31 Comment
  RSA791924  Geranium incanum var. multifidum R. E. Riefner Jr. 2007-4-28 7 -189 Orange City of Newport Beach, Newport Bay, North Star Beach, vicinity of Morning Star Ln. 2 Comment
  RSA792124  Oncosiphon piluliferum R. E. Riefner Jr. 2011-5-20 11 -57 Orange Newport Beach, Coastal Peak Park, East Coastal Peak Road at Ridge Park Road 305 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
  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
  SBBG121999  Atriplex amnicola R. E. Riefner 2005-9-16 05 -666 Orange E of Bayside Drive at confluence with Big Cyn, upper Newport Bay 6 Comment
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Dec 13 2012
  SBBG122000  Atriplex amnicola R. E. Riefner 2006-8-6 06 -381 Orange Big Cyn Crk drainage near Back Bay Drive, Newport Bay 8 Comment
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Dec 13 2012
  SBBG122001  Atriplex amnicola R. E. Riefner 2006-4-17 06 -155 Orange near Bayview Way and Bayview Place, upper Newport Bay 6 Comment
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Dec 13 2012
  SBBG128386  Juglans hindsii R. E. Riefner Jr. 2010-9-8 10 -121 Orange Laguna Cyn, ca. 0.15 mi S of El Toro Rd on E side of Laguna Cyn Rd; Laguna Beach 75 Comment
  SBBG128733  Ehrharta erecta R. E. Riefner Jr. 2012-2-1 12 -15 Orange Dana Point Harbor, vicinity of Puerto Pl and Dana Point Harbor Drive; Dana Point 2 Comment
  SBBG128744  Ipomoea cairica R. E. Riefner Jr. 2012-11-27 12 -563 Orange City of Laguna Beach, S Crescent Beach, Circle Way near Cliff Drive 3 Comment
  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
  SBBG128746  Euphorbia misera R. E. Riefner Jr. 2012-10-16 12 -518 Orange City of Dana Point, Dana Point Harbor, 'Bluff Top Trail' located near Camino Capistrano and Violet Lantern Sts 35 Comment
  SBBG129043  Bahiopsis laciniata R. E. Riefner Jr. 2013-4-5 13 -56 Orange Anaheim Hills, vicinity Hidden Cyn Rd at Avenue De Santiago 305 Comment
  SBBG133368  Callistemon viminalis R. E. Riefner Jr. 2007-4-1 07 -163 Orange Oso Crk, ca. 1.5 mi N from Paseo de Colinas St on Camino Capistrano St; City of Laguna Niguel 87 Comment
  SD240774  Marsilea drummondii R. E. Riefner Jr. 2007-9-30 07 415 Orange City of Yorba Linda, Santa Ana Canyon, urban runoff tributary to Santa Ana River, La Palm Ave at Via Lomas De Yorba East. 110 Comment
  SD253482  Juglans hindsii R. E. Riefner Jr. 2011-9-10 11 124 Orange Santa Ana Canyon, I-91 northbound, south side of freeway, located within 100 ft of the Riverside County line. 127 Comment
  SD257245  Salicornia bigelovii R. E. Riefner Jr. 2003-12-6 03 502 Orange NAD 83; 11S, 0411758E, 3722979N. Costa Mesa, marsh along W side of Santa Ana River, W of 19th Street and Balboa Ave. 9 Comment
  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
  UC1789093  Limonium R. E. Riefner Jr. 2005-9-16 05 -667 Orange Upper Newport Bay, E of Bayside Dr. at Big Canyon Creek. 6 Comment
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Jan 7 2016
  UC1922340  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-3-21 07 -157 Orange City of San Juan Capistrano, vicinity of Calle Arroyo/Paseo Esteban at San Juan creek. Comment
  UC1922344  Populus balsamifera subsp. trichocarpa R. E. Riefner Jr. 2007-6-12 07 -253 Orange City of San Juan Capistrano, Vicinity of Calle Arroyo/Paseo Esteban at San Juan Creek. Comment
  UC1922345  Pseudognaphalium leucocephalum R. E. Riefner Jr. 2007-2-13 07 -55 Orange City of San Juan Capistrano, vicinity of La Novia Ave. and San Juan Creek. Comment
  UC1929691  Antirrhinum multiflorum R. E. Riefner Jr. 2008-6-3 08 -139 Orange Irvine Ranch Reserve, North Irvine Ranch, East Fork cliffs at upper Fremont Canyon along Black Star SCE Rd. Comment
  UC1929693  Antirrhinum multiflorum R. E. Riefner Jr. 2008-7-21 08 -248 Orange Irvine Ranch Reserve, North Irvine Ranch, middle Fremont Canyon, east slope along Black Star SCE Rd. Comment
  UC1929694  Calandrinia breweri R. E. Riefner Jr. 2008-5-20 08 -104 Orange Irvine Ranch Reserve, North Irvine Ranch, western Fremont Canyon, Windy Ridge Rd. Comment
  UC1929696  Melaleuca viminalis R. E. Riefner Jr. 2007-4-1 07 -163 Orange City of Laguna Niguel, Oso Creek, ca. 1.5 mi N from Paseo De Colinas St. on Camino Capistrano St. Comment
  UC1930114  Paspalum vaginatum R. E. Riefner Jr. 2008-1-13 08 -9 Orange City of Newport Beach, San Diego Creek near Hwy. 73 overpass, E of Jamboree Rd. Comment
  UC1930115  Atriplex amnicola R. E. Riefner Jr. 2008-5-25 08 -118 Orange City of San Clemente, vicinity of Camino de Los Mares and Calle Nuevo. Comment
  UC1931364  Nolina cismontana R. E. Riefner Jr. 2007-6-14 07 -256 Orange Santa Ana Mountains, Irvine Ranch Reserve, Fremont Canyon Conservation Easement, W Fork Fremont Canyon, Donaldson Ranch area. Comment
  UC1980275  Atriplex R. E. Riefner Jr. 2006-11-15 06 -678 Orange City of Newport Beach, Bristol St. at Jamboree Rd. Comment



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