Plants of Southern California: Regional Floras

This page is an index to floras of various areas; it may or may not contain a flora for each of our Plant Trail Guides. Consult that list if you don't find a flora for an area including a given trail here.

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Table of Contents

Introduction to the Regional Floras
Information about the order in which the species are presented in the Regional Floras, and the links from the Scientific Name and Common Name.
Search The Regional Floras
The Regional Floras

• List by Political Region (doesn't include any from List by Geographic Region)
  • Orange County
  • Riverside County
  • San Diego County

• List by Geographic Region
  • Transverse Ranges (TR)
  • Mojave Desert (DMoj)
  • Channel Islands (ChI)
  • South Coast (SCo)
  • Peninsular Ranges (PR)
  • Sonoran Desert (DSon)

  • Sierra Nevada (SN) (outside of southern California!)

• Pacific Crest Trail Floras by RT and Shaun Hawke

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My ultimate goal is to provide Regional Floras for each of the broad regions of Southern California. Each of the Regional Floras in turn will link to floras of smaller areas within each Region.

Until I create the Regional Floras, this page will link to all available floras (with the exception of my Trail Guides, which are presented separately). Some of these sub-regional floras are lists I have put together to help with the Trail Guides, and some of them are floras done by others. Many of them are from Bob Muns.

The tables below also provide information about floras that are not online.

The Floras by Bob Muns are also collected together on a single page, since his lists are the largest and most uniform set of floras for Southern California.

All floras done prior to 2012 are in the 1993 Jepson Manual First Edition system. Floras updated or created after 2012 are in the 2012 Jepson Manual Second Edition system, and are indicated by JM2 System in the parenthetical information for each flora. Most of these now have links to Calphotos and to the JM2 treatment from the names of each taxon.

The dates for each flora represent the first time the flora was created. Many of them have since been updated, but the dates here remain unchanged.

Introduction to the Regional Floras

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Search The Regional Floras

A detailed description of how to search the Regional Floras online at this site to find all occurrences of a given taxon is given in Search tchester.org.

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The Regional Floras

The main list below is organized by geographic region of Southern California. Some floras are organized by political regions, and are given separately.

List by Political Region

This section only includes floras that combine at least two geographic regions, and therefore doesn't include any floras from the List by Geographic Region.

Orange County

Orange County contains portions of the South Coast and Peninsular Range.

• A Checklist of the Vascular Plants of Orange County, California, second edition, Fred M. Roberts, Jr. (1,269 taxa, 1998)

Riverside County

Western Riverside County contains portions of the South Coast and Peninsular Range, with a very tiny slice of the Transverse Ranges.

• The Vascular Plants of Western Riverside County, California: An Annotated Checklist, Fred M. Roberts, Jr., Scott D. White, Andrew C. Sanders, David E. Bramlet, and Steve Boyd (1,411 taxa, 2004)

• Comments on the Flora of Western Riverside County (additions of 69 taxa to the above flora, 2005)

San Diego County

San Diego County contains portions of the South Coast, Peninsular Range, and Sonoran Desert.

• Checklist of the Vascular Plants of San Diego County (2,147 taxa; 2001)
• Find a San Diego County Plant Name (search feature for latest version of the San Diego County Checklist, which includes new records from the survey linked next)
• Public Search of the San Diego County Plant Atlas (ongoing survey)

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List by Geographic Region

Transverse Ranges (TR)

• Western Transverse Ranges (WTR)
  • Mt. Pinos Region Flora, Ventura and Kern Counties (315 taxa, 1985)
  • Mt. Pinos Summit Flora, Ventura and Kern Counties (150 taxa, 1992, Rev. 1994)

  • Santa Monica Mountains: Bob Muns (~950 taxa; 1999); Gibson and Prigge (collections and sightings from vouchers, checklists, and EIRs)
    • Mishe Mokwa Trail, Santa Monica Mountains, Los Angeles County (201 taxa; 1995; flora from 1994 and 1995, the first and second years after it burned)
    • Charmlee Regional Park, Santa Monica Mountains, Los Angeles County (233 taxa; 1984, 1987, 2002)
    • Malibu Creek State Park, Santa Monica Mountains, Los Angeles County (407 taxa; 1983)
    • Point Mugu State Park, Santa Monica Mountains, Ventura County (405 taxa; 1988)
    • Topanga State Park, Santa Monica Mountains, Los Angeles County (347 taxa; 1983)

• San Gabriel Mountains (SnGb)
  • Eastern San Gabriel Mountains
    • Plants Of The Eastern San Gabriel Mountains: An Initial Checklist (1,331 taxa; 2008)
    • Flora of the Pine Belt of the San Gabriel Mountains (335 taxa; 2004)
    • The Flora of the Pine Belt of the San Antonio Mountains of Southern California, Ivan M. Johnston, 1919.
    • San Dimas Experimental Forest Vascular Plant List (also available as an excel or text file here, along with an excel file for mosses; links not working on 2/21/05)
    • Plants Of Glendora's South Hills (502 taxa; 2005)
    • Little Rock Road to Three Points Area (334 taxa; 2014; JM2 Format)
    • Three Points to Cloudburst Summit Area (240 taxa; 2014; JM2 Format)
    • Mt. Waterman north side above SR2 (128 taxa; 2015; JM2 Format)
    • Cloudburst Summit, Cooper Canyon, Buckhorn Area (211 taxa; 2014; JM2 Format)
    • Mt. Islip north slope and east-west ridgeline (140 taxa; 2016; JM2 Format)
    • Throop Peak Area (86 taxa; 2014; JM2 Format)
    • Vincent Gap to Fenner Saddle (82 taxa; 2015; JM2 Format)
    • Jackson Lake Area (316 taxa; 2015; JM2 Format)
    • Table Mountain (239 taxa; 2015; JM2 Format)
    • Blue Ridge Trail / Big Pines Area (257 taxa; 2014; JM2 Format)
    • Eastern High-Elevation Portion of the Blue Ridge (180 taxa; 2014)
    • PCT Road 3N31 to saddle northwest of Gobblers Knob (191 taxa; 2014)
    • Devils Backbone Trail Area (139 taxa; 2013)
    • Icehouse Canyon (195 taxa; 2017; JM2 Format)
  • Western San Gabriel Mountains
    • Flora of Devil's Punchbowl (143 taxa)
    • Placerita Canyon, Los Angeles County Park (331 taxa; 1994 + 4 added in 2001)
    • Mt. Lowe Area (170 taxa; 2014; JM2 Format)
    • Flora of Lower Mt. Wilson, San Gabriel Mountains (455 taxa; 2001; compilation of the following floras)
      • Arroyo Seco, Lower Portion (227 taxa; 2001)
      • Eaton Canyon, Lower Portion (316 taxa; 1984, with additions in 1989 and 1994)
      • Mount Wilson Toll Road (208 taxa; ~1980)
      • Chantry Flat / Santa Anita Canyon (248 taxa; 1999)
    • Flora of Lower Eaton Canyon, San Gabriel Mountains (382 taxa; 2003; updated from the 1984 list in the previous link) Backbone Trail Area (139 taxa; 2013)
    • Mt. Wilson Trail (295 taxa; 2018; JM2 Format)

• San Bernardino Mountains (SnBr)
  • Plant Checklist for Whiskey Springs / Cactus Flat / Cushenbury Canyon Area (326 taxa; 2011)
  • Plant Checklist for Onyx Summit Area (291 taxa; 2016; JM2 Format)
  • Plant Checklist for South Fork Meadow Area (330 taxa; 2017; JM2 Format)
  • Plant Checklist for Fish Creek Area (270 taxa; 2013)
  • Plant Checklist for PCT D5 Mission Springs to Rainbow Road Area (344 taxa; 2014; JM2 Format)
  • Heart Bar State Park / Fish Creek Area, San Bernardino Mountains Above 1800 m (139 + 7? taxa; 2002)
  • Plant Checklist for Vivian Creek and Forest Falls Area (361 taxa; 2009)
  • Plant Checklist for Banning, Cabazon, Morongo Indian Reservation, Snow Creek, Whitewater River Canyon area (814 taxa; 2010)
  • Plant Checklist for Whitewater River Canyon, Riverside County portion (349 taxa; 2018; JM2 Format)
  • Plant Checklist for Mission Creek Area (172 taxa; 2010)
  • New Dixie Mine Road Area, west of Landers (202 taxa; 2010)

Mojave Desert (DMoj)

• Flora of Wildflower and Wildlife Sanctuaries in Antelope Valley (119 taxa)
• Cactus Flat Road Area, Inyo County (109 taxa; 2011)
• Some Death Valley Plants That Bloom in February and March (102 taxa; 2016; JM2 Format)
• Death Valley (1,042 taxa; page no longer online; link now goes to the 2005 version of this site at the internet archive site)
• Titus Canyon, Death Valley (250 taxa; 2016; JM2 Format)
• Antelope Valley Poppy Reserve (94 taxa; 2014; JM2 Format)
• Elizabeth Lake Area, Liebre Mountain north area (325 taxa; 2014; JM2 Format)
• Bobs Gap Area, south of Palmdale (250 taxa; 2014; JM2 Format)
• Jct. SR138 / Highway 18 Area, east of Palmdale (156 taxa; 2014; JM2 Format)
• Puma Canyon Ecological Reserve, southeast of Pinon Hills (156 taxa; 2014; JM2 Format)
• New Dixie Mine Road Area, west of Landers (201 taxa; 2010)
• Iron Age Mine Area, east of 29 Palms (70 taxa; 2011)
• Desert Mountains (DMtns)
  • Mojave Desert Monsoonal Bloom in September 2012 (Whitewater Canyon near Palm Springs to the New York Mountains, mostly the latter; 171 taxa; 2012)
  • Surveys in Joshua Tree National Park in November 2017 (151 taxa; 2017; JM2 Format)
  • Northwest Area, Joshua Tree National Park (279 taxa; 2017; JM2 Format)
  • Boy Scout Trail Area, Joshua Tree National Park (210 taxa; 2017; JM2 Format)
  • Queen Mountain Area, Joshua Tree National Park (249 taxa; 2011)
  • Barker Dam, Wonderland Wash, Western Queen Valley Area (290 taxa; 2017; JM2 Format)
  • Red Butte Wash / Hayfield Area, Joshua Tree National Park

Channel Islands (ChI)

• North Channel Islands (n ChI)
• South Channel Islands (s ChI)
  • Santa Catalina Island (618 taxa;1996); Scanned 1984 booklet (10.6 MB)

South Coast (SCo)

• Los Angeles County
  • Malibu Lagoon State Park, Santa Monica Mountains, Los Angeles County (133 taxa; 1988)
  • Plants Of Glendora's South Hills (502 taxa; 2005)

• Orange County
  • Bolsa Chica Marsh, Orange County (201 taxa; 1983, 1999)
  • Crystal Cove State Park, Orange County (319 taxa; 1996)
  • Laurel Canyon, Laguna Coast Wilderness Park, Orange County (221 taxa; 2003)

• San Diego County
  • Lake Calavera and the Calavera Heights preserves, Carlsbad (351 taxa; 2010)
  • San Elijo Lagoon: San Elijo Lagoon and Vicinity (Wayne Armstrong; 408 taxa; 2003); San Elijo Lagoon (Susan Welker and Angelique Herman, San Elijo Lagoon Conservancy; 494 taxa; 2015)
  • Los Penasquitos Canyon Preserve - Black Mt. Rd. to I-15 (Keir Morse and Angelique Herman; 195 taxa; 2015)
  • Torrey Pines State Reserve, San Diego (491 taxa; 1990)

Peninsular Ranges (PR)

• San Jacinto Mountains (609 taxa; 2007)
  • Plants With Voucher Records for San Jacinto Mountain above 1800 m (6000 feet) (160 taxa; 2002)

  • Baldy Mountain (244 taxa; 2020; JM2 Format)
  • Black Mountain Road Area (219 taxa; 2018; JM2 Format)
  • Black Mountain Trail (105 taxa; 2011)

  • California Riding and Hiking Trail north of Black Mountain Road (187 taxa; 2018; JM2 Format)

  • Cedar Spring Trail south of PCT, and PCT north of Cedar Spring (230 taxa; 2018; JM2 Format)
  • Cedar Spring Trail Both North and South of PCT (247 taxa; 2018; JM2 Format)
  • Cedar Spring Trail south of PCT, and PCT south of Cedar Spring (222 taxa; 2016; JM2 Format)

  • Dark Canyon Area 5000 to 9000 feet (275 taxa; 2018; JM2 Format)
  • Dark Canyon Area Above 6000 Feet Elevation (275 taxa; 2010)
    • 7 Pines Trail Area (155 taxa; 2011)
    • Marion Mountain Trail (114 taxa; 2018; JM2 Format)
    • Marion Mountain Trail to Deer Springs Camp Area (2010)
    • Sawmill Road / Stone Creek Trail Area (5800 to 6800 feet elevation; 274 taxa; 2014; JM2 Format)

  • Devils Slide Trail (133 taxa; 2011)

  • Ernie Maxwell Trail (122 taxa; 2018; JM2 Format)

  • Fuller Ridge Area (163 taxa; 2011-2018; JM2 Format)

  • Garner Valley - all (675 taxa, 2011)
  • Garner Valley - Apple Canyon Road Area (186 taxa, 2019; JM2 Format)
  • Garner Valley - Lake Hemet Area (244 taxa, 2020; JM2 Format)
  • Garner Valley - Quinn Flat and Kenworthy Area (323 taxa, 2016; JM2 Format)
  • Garner Valley - Morris Ranch Road Area (205 taxa, 2019; JM2 Format)
  • Garner Valley and Thomas Mountain (353 taxa, mostly from voucher records, compiled by Erik Blume)

  • Hall Canyon at the James Reserve (276 taxa at the James Reserve near Idyllwild; 2016; JM2 Format)
  • Hidden Lake Drainage Basin (51 taxa; 2008)
  • The Hub / Strawberry Creek Gorge (Grotto) Area southwest of Idyllwild (270 taxa; 2018; JM2 Format)

  • Idyllwild Area (468 taxa; 2010)
  • Idyllwild Park (243 taxa; 2012; JM2 Format)

  • James Reserve Nature Trail (137 taxa at the James Reserve Nature Trail near Idyllwild; 2020; JM2 Format)

  • Laws Loop Trail (Willow Creek Trail, Laws Junction, Caramba Trail) (132 taxa; 2018; JM2 Format)

  • May Valley Road Area (283 taxa; 2019; JM2 Format)

  • Old Control Road Area (SR74 to Idyllwild) (187 taxa; 2012; JM2 Format)

  • Palm, Andreas, Murray and Tahquitz Canyons below 3000 Feet Elevation (396 taxa; 2011)

  • PCT From Little Tahquitz Trail to Zen Trail (98 taxa; 2011)
  • PCT From Cedar Spring Trail south two miles (84 taxa; 2016; JM2 Format)
  • PCT from Cedar Spring Trail to SR74 (xx taxa; 2019; JM2 Format)
  • PCT North of SR74 (98 taxa; 2011)

  • Pine Cove Area (258 taxa; 2018; JM2 Format)

  • Ramona Trail Area (169 taxa; 2018; JM2 Format)

  • Saddle Junction to Wellman Cienega via PCT and Wellman Cienega Trail (46 taxa; 2018; JM2 Format)
  • San Jacinto Peak Area (32 taxa; 2013; JM2 Format)
  • Lowermost Snow Creek Area (340 taxa; 2017; JM2 Format)
  • Skyline Trail (61 taxa; 2017; JM2 Format)

  • Tahquitz Valley
    • Flora of the Meadows of Tahquitz Valley, including flora of Tahquitz Meadow, Skunk Cabbage Meadow, Little Tahquitz Meadow, Reeds Meadow and Wellman Cienega (151 taxa; 2011)
    • Skunk Cabbage Meadow (103 taxa; 2011)
    • Candy's Creek and Skunk Cabbage Meadow (146 taxa; 2019; JM2 Format)
    • Wellman Cienega (79 taxa; 2010)

    • Tahquitz Valley Checklist, with separate columns for Skunk Cabbage Meadow, Tahquitz Meadow, Wellman Cienega, Candys Creek, and Tahquitz and Willow Creeks (267 taxa; 2011, but with older, much more incomplete meadow columns than the Meadow flora linked above)
    • Tahquitz and Willow Creeks (185 taxa; 2009)
    • Willow Creek Uppermost Section (146 taxa; 2018; JM2 Format)
    • Willow Creek Lowermost Section (117 taxa; 2019; JM2 Format)

  • Tahquitz Peak and Red Tahquitz Peak Area (100 taxa; 2008)

  • Tamarack, Round and Long Valleys
    • Introduction to the Checklists
    • Round and Tamarack Valleys (latest version that also includes Long Valley; 166 taxa; 2013)
    • Long Valley (latest version for Long Valley that also includes an older version of the Round and Tamarack Valley Floras with some now-rejected species; 168 taxa; 2012)

  • Vista Grande Road 3S08 (168 taxa; 2018; JM2 Format)

  • Willow Creek Trail between Hidden Lake Divide and Laws Connector Trail (57 taxa; 2018; JM2 Format)

• Santa Rosa Mountains (607 taxa from Zabriskie; 546 taxa from vouchers; 2006)
  • Pinyon Flat Area (includes the upper part of the Pinyon Trail and the upper part of the Palm Canyon Trail; 325 taxa; 2016; JM2 format)
  • Cactus Spring Trail (228 taxa; 2008)
  • Santa Rosa Mountains Above 7800 Feet Elevation (115 taxa; 2009)
  • White Wash Area (127 taxa; 2012; JM2 system)

• Santa Ana Mountains / Puente Hills
  • Whittier Hills, Los Angeles County (281 taxa; 2002)
  • Skyline Trail, Puente Hills, Los Angeles County (168 taxa; 1982)
  • Harford Springs Park, Riverside County (324 taxa; 2009)
  • Caspers Wilderness Park, Orange County (162 taxa; 2002, 2003)
  • Santa Rosa Plateau Ecological Reserve (658 taxa, JM2 Format; 2016); see also Greater Santa Rosa Plateau Area, Riverside County (667 taxa; 2005) and 2010 Burn Area)
  • Santa Margarita Ecological Reserve, Riverside and San Diego Counties (388 taxa; 2003)
  • Santa Margarita Ecological Reserve: Highland Trail area, Riverside and San Diego Counties (294 taxa; JM2 Format; 2016)
  • Margarita Peak Area, San Diego County (82 taxa; 2007)

• Cahuilla Mountain Area (195 taxa; 2009)

• Palomar Mountains (no separate flora yet available - see Plants of the Palomar, Cuyamaca & Laguna Mt. Region 833 taxa; 2003)
  • Lake Henshaw (193 taxa; 2012)

• Hot Springs Mountain / Warner Springs Area
  • S2 Mile Marker 0 to 4.6
  • Barrel Springs / Warner Springs Area

• Western San Diego County
  • Gird Valley Preserve, Fallbrook (187 taxa; 2015; JM2 System)
  • San Marcos Hills (282 taxa; 2003)
  • Daley Ranch, northernmost part of the city of Escondido (494 taxa; 2005)
  • Rattlesnake Canyon, Poway (254 taxa; 2008)
  • Iron Mountain, Poway (393 taxa; 2010)

• Cuyamaca / Laguna Mountains (the 2003 checklist by Hirshberg and Clemons is no longer online by request of the first author; see instead Plants of the Palomar, Cuyamaca & Laguna Mt. Region 833 taxa; 2003)
  • East of Cuyamaca Lake, Laguna Mountains, San Diego County (283 taxa; 2018; JM2 System)
  • Cuyamaca Peak, Laguna Mountains, San Diego County (352 taxa; 2013)
  • Laguna Meadow Area, Laguna Mountains, San Diego County (433 taxa; 2017; JM2 System)
  • Stonewall Peak, Laguna Mountains, San Diego County (335 taxa; 2016; JM2 System)
  • Penny Pines to Garnet Peak Area, Laguna Mountains, San Diego County (192 taxa; 2016; JM2 System)

• Mountain Springs Grade area, Imperial / San Diego County (367 taxa; 2014; JM2 system)

Sonoran Desert (DSon)

• Most or all of Anza-Borrego Desert
  • Updated Duffie Clemons 1985 Checklist of Vascular Plants of the Anza-Borrego Desert (835 taxa; 1985)
  • Wayne Armstrong's Anza-Borrego Desert Region (511 taxa; 2003)

• Subregions of Anza-Borrego Desert

  • Northern Portion (from west to east)
    • Northwest region accessed by Upper Coyote Canyon Road above Middle Willows
      • White Wash Area (127 taxa; 2012; JM2 system)
    • Northwest region accessed by Upper Coyote Canyon Road below Middle Willows
      • Indian and Sheep Canyons, Collins Valley Area (274 taxa; 2018; JM2 system)
      • Collins Valley Area (325 taxa; 2013; JM2 system)
      • Boulder Alley / Lower Willows Loop (258 taxa; 2018; JM2 system)
      • Coyote Creek First to Third Crossing (231 taxa; 2017; JM2 system)
      • Box Canyon above Third Crossing of Coyote Creek (129 taxa; 2017; JM2 system)
    • Canyons immediately west of town of Borrego Springs
      • Canyon North of Henderson Canyon (190 taxa; 2017; JM2 system)
      • Henderson Canyon (168 taxa; 2013; JM2 system)
      • Borrego Palm Canyon (305 taxa; 2008)
      • Little Surprise Canyon (97 taxa; 2009)
      • Lowermost Tubb Canyon (85 taxa; 2011); checklist includes columns for Little Surprise Canyon and Glorietta Canyons (156 taxa; 2011)
      • Glorietta / Juanito Canyons (154 taxa; 2013; JM2 system)
      • Culp Valley (313 taxa; 2012)
      • Upper Tubb Canyon / Big Spring (108 taxa; 2013; JM2 system)
      • Hellhole Canyon (250 taxa; 2013; JM2 system)
      • Culp Valley / Hellhole Canyon (328 taxa; 2010; older version; see separate floras of Culp Valley and Hellhole Canyon linked above)
    • Coyote Mountain Area near Borrego Springs (231 taxa; 2007)
      • Southeast Coyote Mountain Area (104 taxa; 2016; JM2 system)
      • Coyote Creek First to Third Crossing (231 taxa; 2017; JM2 system)
    • Clark Valley Area (152 taxa; 2016; JM2 system)
      • Butler and Rockhouse Canyons (147 taxa; 2009)
    • Borrego Springs Desert Floor Area (259 taxa; 2015; JM2 system)
    • Borrego Badlands (146 taxa; 2014; JM2 system)
    • Borrego Mountain (155 taxa; 2016; JM2 system)
    • Southeast Santa Rosa Mountains (181 taxa; 2008)
      • Villager Peak Trail and Rattlesnake Canyon (170 taxa; 2019; JM2 system)
      • Rattlesnake Canyon and surrounding area (183 taxa; 2011)
      • Palo Verde Canyon and Upper Wash (115 taxa; 2011)
      • Smoke Tree and Coachwhip Canyons (189 taxa; 2017; JM2 system)
      • Truckhaven Rocks Area (129 taxa; 2019; JM2 system)
      • Upper Palm Wash / Calcite Mine Road (57 taxa from survey / 197 taxa for area; 2008)
      • Palm Wash Area of both San Diego and Imperial Counties (161 taxa; 2016; JM2 system)
      • Extreme Northeast San Diego County (99 taxa; 2008)

  • Middle Portion
    • SR78 corridor, west to east
      • San Felipe Valley (594 taxa; 2010)
        • PCT North of Scissors Crossing (254 taxa; 2015; JM2 System)
        • Sentenac Cienega Area (175 taxa; 2012; JM2 System)
      • Sentenac Canyon / Upper San Felipe Wash (188 taxa for it alone; 2013; JM2 format), including Checklist (328 total taxa; 2013; JM2 Format)
      • Grapevine Canyon Area (237 taxa for it alone; 2011), including Mescal Bajada and Mine Canyon / Mine Wash Checklist (330 total taxa; 2011)
      • Plum Canyon (161 taxa; 2012; JM2 System)
      • Lizard Canyon and Chuckwalla Wash / Canyon (273 taxa; 2017; JM2 System)
      • Mescal Bajada Area (249 taxa; 2014; JM2 System)
      • Yaqui Pass Area (143 taxa; 2014; JM2 System)
      • Yaqui Ridge Area (185 taxa; 2014; JM2 System)
      • The Narrows Area (248 taxa; 2014; JM2 System)
      • Western Old Kane Spring Road Area (138 taxa; 2018; JM2 System)
      • SR78 / Old Kane Spring Road Area (138 taxa; 2018; JM2 System)
      • Northeast Vallecito Mountains (the Elephant Tree Natural Area) (209 taxa; 2013; JM2 System)
        • Harper Canyon (138 taxa; 2011)
        • Starfish Cove (63 taxa; 2000)
    • S2 corridor, north to south
      • Cool Canyon (197 taxa; 2018; JM2 System)
      • Whale Peak / Pinyon Mountain Valley Area (233 taxa; 2013; JM2 System)
      • Foot and Walker Pass to Smuggler Canyon Area (244 taxa; 2019; JM2 System)
        • Foot and Walker Pass to Crime Canyon Area (189 taxa; 2014; JM2 System)
        • Smuggler Canyon Area (239 taxa; 2013; JM2 System)
      • Granite Mountain, including the PCT, Cool Canyon and Hornblende Canyon (329 taxa; 2014; JM2 System)
      • se Granite Mountain, including Cool Canyon and Hornblende Canyon (278 taxa; 2014; JM2 System)
      • Rodriguez Truck Trail Area (197 taxa; 2018; JM2 System)
      • Mason Valley Area (345 taxa; 2012)
        • Oriflamme Canyon (382 taxa including Mason Valley Area Vouchers; 2012)
        • Rainbow Canyon (198 taxa; 2017; JM2 System)
      • North Sawtooth Mountains / Tierra Blanca Mountains Area (360 taxa; 2012; JM2 system)
        • The Potrero (235 taxa; 2018; JM2 system)
        • Vallecito Hills Area (280 taxa; 2012; 373 taxa including Agua Caliente County Park Area; JM2 system)
        • Bisnaga Alta Wash Area (239 taxa; 2012; 347 taxa including Agua Caliente County Park Area)
        • Agua Caliente County Park Area (237 taxa; 2009)
        • Moonlight Canyon and "Canyon 41" (Canyon 41 is west of mile marker 41 on S2; 391 taxa; 2017; JM2 system)
        • "Canyon 41" (Canyon 41 is west of mile marker 41 on S2; 171 taxa; 2018; JM2 system)
        • Ironwood Canyon (163 taxa; 2018; JM2 system)
        • June Wash (169 taxa including neighboring areas; 2018; JM2 system)
        • Canebrake (235 taxa; 2018; JM2 system)
      • Palm Spring / Vallecito Creek Area (111 taxa; 2020; JM2 system)

    • Southern Portion
      • Canyon Sin Nombre Area (233 taxa; 2016; JM2 system)
      • Carrizo Creek Area (290 taxa; 2013; JM2 system; includes Torote, Indian, Bow Willow, Rockhouse and Carrizo Canyons)
      • Sweeney Pass and Volcanic Hills Area (252 taxa; 2020; JM2 system)
      • Torote / Indian Canyons Area (204 taxa; 2018; JM2 system)

  • Other Sonoran Desert
    • Red Butte Wash / Hayfield Area, Joshua Tree National Park
    • Mecca Hills, Riverside County (174 taxa; 2011)
    • Uppermost Box Canyon Road near I-10 (126 taxa; 2020; JM2 System)
    • Palm Wash Area, Extreme Northwest Imperial County (121 taxa; 2010)
    • Palm Wash Area of both San Diego and Imperial Counties (161 taxa; 2016; JM2 system)
    • San Sebastian Marsh, Imperial County (96 taxa; 2011)
    • Fish Creek Mountains, Imperial County (149 taxa; 2014; JM2 System)
    • Ocotillo / Coyote Mountains Area, Imperial County (270 taxa; 2010)
      • Fossil Canyon, Coyote Mountains, Imperial County (101 taxa; 2011)

  Sierra Nevada (SN)

  This is outside of southern California, but I had to link this from someplace.
  • Lundy Canyon and Lee Vining Creek Area (605 taxa; 2010)
  • PCT Area Blue Lakes to Carson Pass (323 taxa; 2014)
  • Walker Pass Area (169 taxa; 2011)

Go to:

• Native and Introduced Plants of Southern California