OPTIONS
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PCT: Cottonwood Trailhead to Whitewater Canyo
San Bernardino Mountains, near I-10 to Whitewater Canyon Riverside County |
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| RT Hawke, Shaun Hawke, Tom Chester, Adrienne Ballwey, Dave Stith and Tracy Albrecht (2013-03-24) | ||||||
| 141 PLANTS |
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Acamptopappus sphaerocephalus var. sphaerocephalus Rayless goldenhead
native
Shrub 
© 2015 John Doyen 
© 2015 John Doyen 
© 2017 John Doyen |
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Acmispon glaber var. brevialatus Short winged deerweed
native
Perennial herb 
© 2023 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
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Acmispon strigosus Strigose lotus
native
Annual herb 
© 2024 Mike Russler 
© 2023 Ron Vanderhoff 
© 2016 Steve Matson |
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Adenostoma fasciculatum Chamise
native
Tree, Shrub 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
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Allium fimbriatum var. fimbriatum Fringed onion
native
Perennial herb (bulb) 
© 2008 Keir Morse 
© 2008 Keir Morse 
© 2022 R.A. Chasey |
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Amaranthus fimbriatus Fringed amaranth
native
Annual herb 
© 2022 R.A. Chasey 
© 2023 Jim Andre 
© 2022 R.A. Chasey |
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Ambrosia dumosa Burro weed, Burrobush, White bursage
native
Shrub 
© 2005 Steve Matson 
© 2023 Steve Matson 
© 2005 Steve Matson |
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Ambrosia salsola Cheesebrush, Burrobrush
native
Shrub 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
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Amsinckia tessellata var. tessellata Bristly fiddleneck, Devil's lettuce
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
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Antirrhinum coulterianum Coulter snapdragon, Coulter's snapdragon
native
Annual herb 
© 2019 Lynn Sweet 
© 2019 Aaron Echols 
© 2019 Hailey Laskey |
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Artemisia californica California sagebrush, Coast sagebrush, Coastal sage brush
native
Shrub 
© 2018 James Gonsman 
© 2019 Aaron Echols 
© 2018 Ron Vanderhoff |
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Atriplex canescens var. canescens Fourwing saltbush
native
Shrub 
© 2017 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2019 Kevin Woolen |
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Avena barbata Slender oat, Slim oat
• invasive non-native
Annual grass 
© 2018 Julian Geoghegan 
© 2023 David popp 
© 2019 Ron Vanderhoff |
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Baccharis sergiloides Desert baccharis
native
Shrub 
© 2016 Richard Spjut 
© 2020 David Greenberger  © 2022 lglevanik |
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Bahiopsis parishii Parish viguiera
native
Shrub 
© 2019 Diane Etchison 
© 2019 Diane Etchison 
© 2020 Diane Etchison |
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Bebbia juncea var. aspera Rough sweetbush
native
Shrub 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2019 Ron Vanderhoff |
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Brassica tournefortii Saharan mustard
• invasive non-native
Annual herb 
© 2023 Julia Markey 
© 2018 Jeffrey Black 
© 2021 Ron Vanderhoff |
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Brickellia desertorum Desert brickellbush, Desert brickellia
native
Shrub 
© 2017 Fred Melgert / Carla Hoegen 
© 2019 Matt Berger 
© 2020 R.A. Chasey |
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Bromus diandrus Bromegrass, Ripgut brome, Ripgut grass
• invasive non-native
Annual grass 
© Alize 
© 2021 Richard Spjut 
© 2024 David popp |
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Bromus madritensis ssp. rubens Red brome
• invasive non-native
Annual grass 
© 2015 Chris Jaster 
© 2015 jamie smith 
© 2018 Gary McDonald |
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Bromus tectorum Cheatgrass, downy brome, Downy brome grass, Downy chess
• invasive non-native
Annual grass 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
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Calandrinia ciliata red maids, Calandrinia
native
Annual herb 
© 2021 Mary Ann Machi 
© 2024 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
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Camissonia campestris ssp. campestris Field sun cup, Mojave suncup
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2024 Mike Russler |
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Camissoniopsis pallida ssp. pallida Pale sun cup
native
Annual herb 
© 2023 Mike Russler 
© 2023 Mike Russler 
© 2021 R.A. Chasey |
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Castilleja foliolosa Texas paintbrush, Woolly indian paintbrush
native
Perennial herb 
© 2018 Steve Matson 
© 2018 Steve Matson 
© 2019 Ron Vanderhoff |
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Ceanothus perplexans Cupped leaf ceanothus
native
Shrub 
© 2010 Sherie Hubble 
© 2016 Ron Vanderhoff 
© 2020 David Greenberger |
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Cercocarpus betuloides var. betuloides Birch leaf mountain mahogany
native
Tree, Shrub 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2016 Ron Vanderhoff |
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Chaenactis fremontii Fremont pincushion, Pincushion flower
native
Annual herb 
© 2019 Matt Berger 
© 2021 Julie Ann Watson 
© 2020 Kimberly Coates |
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Chaenactis glabriuscula Common yellow chaenactis, Yellow pincushion
native
Annual herb 
© 2019 Marisa Persaud 
© 2016 Steve Matson 
© 2019 Marisa Persaud |
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Chamaesyce micromera Sonoran sandmat
native
Annual herb 
© 2012 Steve Matson 
© 2012 Keir Morse 
© 2012 Keir Morse |
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Cheilanthes covillei Coville's lip fern
native
Fern 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
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Chenopodium californicum California goosefoot, Pigweed, Soaproot
native
Perennial herb 
© 2023 Mike Russler 
© 2023 Mike Russler 
© 2023 Mike Russler |
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Chilopsis linearis ssp. arcuata Desert willow
native
Shrub 
© 2017 Thomas Egan 
© 2020 R.A. Chasey 
© 2020 R.A. Chasey |
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Clematis pauciflora Few flowered clematis, Hill clematis, Ropevine clematis
native
Perennial herb, Vine 
© 2015 Diane Etchison 
© 2019 Ron Vanderhoff 
© 2019 Diane Etchison |
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Crassula connata Pigmy weed, Sand pygmy weed, Sand pygmyweed
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2022 Sameer Saroa 
© 2019 Adam Chasey |
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Crossosoma bigelovii Bigelow crossosoma, Bigelow's ragged rock flower, Ragged rockflower
native
Shrub 
© 2022 Eric Engles 
© 2019 Richard Spjut 
© 2020 Matt Berger |
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Croton californicus California croton, Desert croton
native
Perennial herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2017 Steve Matson |
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Croton setigerus Turkey-mullein
native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2014 Richard Chasey |
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Cryptantha intermedia var. intermedia Common cryptantha
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
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Cylindropuntia echinocarpa Silver cholla
native
Shrub (stem succulent) 
© 2023 Catherine Chang 
© 2019 Marisa Persaud 
© 2019 Arch McCulloch |
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Delphinium parishii ssp. parishii Parish's larkspur
native
Perennial herb 
© 2008 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
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Delphinium parryi ssp. parryi Parry's larkspur, San bernardino larkspur
native
Perennial herb 
© 2022 Mike Russler 
© 2021 R.A. Chasey 
© 2013 James Gonsman |
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Dendromecon rigida Bush poppy, Tree poppy
native
Shrub 
© 2024 Mike Russler 
© 2024 Mike Russler 
© 2020 Ron Vanderhoff |
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Dichelostemma capitatum ssp. capitatum Blue dicks, Wild hyacinth
native
Perennial herb 
© 2017 Alison Sheehey 
© Geoff Burleigh 
© 2015 Ken Lunders |
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Dudleya saxosa ssp. aloides Desert dudleya, Panamint liveforever
native
Perennial herb 
© 2019 Josephine Brennan 
© 2019 Ron Vanderhoff 
© 2019 Matt Berger |
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Echinocereus engelmannii Calico cactus, Engelmann's hedgehog cactus
native
Shrub (stem succulent) 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
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Ehrendorferia chrysantha Golden eardrops
native
Perennial herb 
© 2019 David Greenberger 
© 2020 Bryant Baker 
© 2019 Ron Vanderhoff |
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Emmenanthe penduliflora var. penduliflora Whispering bells, Whisperingbells
native
Annual herb 
© 2014 Steve Matson 
© 2024 R.A. Chasey 
© 2022 Mike Russler |
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Encelia actoni Acton encelia
native
Shrub 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2019 Cynthia Powell |
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Encelia farinosa Brittlebush, Goldenhills, Incienso
native
Shrub 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
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Ephedra californica California ephedra, California jointfir, Desert tea
native
Shrub 
© 2021 Kristen Nelson 
© 2021 Kristen Nelson 
© 2018 Paul Preston and Tim Lukaszewski |
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Eriastrum eremicum ssp. eremicum Desert eriastrum, Desert wool star, Desert woollystar
native
Annual herb 
© 2017 Bonnie Nickel 
© 2024 Olesya Konovalova 
© 2024 Olesya Konovalova |
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Ericameria linearifolia Interior goldenbush, Linear leaved goldenbush, Narrowleaf goldenbush
native
Shrub 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
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Ericameria paniculata Mojave rabbitbrush, Black-banded rabbitbrush
native
Perennial herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
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Eriodictyon crassifolium var. crassifolium Thick leaved yerba santa, Thickleaf yerba santa
native
Shrub 
© 2019 Diane Etchison 
© 2019 Diane Etchison 
© 2020 Diane Etchison |
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Eriodictyon trichocalyx var. trichocalyx Hairy yerba santa
native
Shrub 
© 2020 Jim Andre 
© 2017 Maisie Borg 
© 2024 Mike Russler |
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Eriogonum elongatum var. elongatum Long stemmed buckwheat
native
Perennial herb 
© 2017 Ron Vanderhoff 
© 2019 Aaron Echols 
© 2021 Mike Russler |
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Eriogonum fasciculatum var. polifolium California buckwheat, Eastern mojave buckwheat
native
Shrub 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
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Eriogonum gracile var. gracile Slender buckwheat, Slender woolly buckwheat
native
Annual herb 
© 2021 Mike Russler 
© 2022 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
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Eriogonum wrightii var. nodosum Bastardsage, Wright s buckwheat, Wright's buckwheat
native
Perennial herb, Shrub 
© 2020 R.A. Chasey 
© 2020 R.A. Chasey 
© 2020 R.A. Chasey |
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Eriophyllum confertiflorum var. confertiflorum Golden yarrow, Yellow yarrow
native
Shrub 
© 2023 Ryan O'Dell 
© 2013 James Gonsman 
© 2020 Ron Vanderhoff |
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Erodium botrys Big heron bill, Broad leaf filaree, Long beaked filaree
non-native
Annual herb 
© 2006 Steve Matson 
© 2006 Steve Matson 
© 2006 Steve Matson |
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Erodium cicutarium Coastal heron's bill, Red stemmed filaree, Redstem stork's bill
• invasive non-native
Annual herb 
© 2022 Steve Matson 
© 2008 Steve Matson 
© 2022 Steve Matson |
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Eschscholzia californica California poppy
native
Annual, Perennial herb 
© 2019 Dee Shea Himes 
© 2021 Ron Vanderhoff 
© 2019 Amy Rapport |
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Eschscholzia parishii Parish's poppy, Pygmy poppy
native
Annual herb 
© 2013 James Gonsman 
© 2023 Keir Morse 
© 2023 Ryan O'Dell |
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Eulobus californicus California primrose
native
Annual herb 
© 2019 Elexis Padron 
© 2019 Ron Vanderhoff 
© 2019 Elexis Padron |
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Funastrum cynanchoides var. hartwegii Climbing milkweed
native
Perennial herb 
© 2010 Steve Matson 
© 2010 Steve Matson 
© 2025 Mike Russler |
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Gilia angelensis Chaparral gilia
native
Annual herb 
© 2023 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
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Gilia capitata ssp. abrotanifolia Ball gilia, Blue field gilia, Bluehead gilia
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
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Hesperoyucca whipplei Chaparral yucca
native
Shrub 
© 2020 Julia Markey 
© Geoff Burleigh 
© 2020 Matt Berger |
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Juniperus californica California juniper
native
Shrub 
© 2019 Patrick Furtado 
© 2017 Gary McDonald 
© 2014 Ron Vanderhoff |
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Keckiella antirrhinoides var. antirrhinoides Chaparral beard tongue
native
Shrub 
© 2020 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2020 Diane Etchison |
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Krameria bicolor White rhatany
native
Shrub 
© 2010 Steve Matson 
© 2010 Steve Matson 
© 2010 Steve Matson |
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Larrea tridentata South american creosote bush
native
Shrub 
© 2005 Steve Matson 
© 2005 Steve Matson 
© 2005 Steve Matson |
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Lasthenia coronaria Royal goldfields
native
Annual herb 
© 2021 Aaron Echols 
© 2021 Aaron Echols 
© 2021 Aaron Echols |
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Layia glandulosa White layia, White tidy tips, Whitedaisy tidytips
native
Annual herb 
© 2016 James Gonsman 
© 2021 Mike Russler 
© 2021 Mike Russler |
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Lepidospartum squamatum California broomsage, California broomshrub, Scale broom
native
Shrub 
© 2021 Mike Russler 
© 2021 David Wolfson 
© 2021 Mike Russler |
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Leptosiphon lemmonii Lemmon's linanthus
native
Annual herb 
© 2019 Matt Berger 
© 2024 Erin Bergman  © Don Rideout |
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Leptosyne bigelovii Bigelow coreopsis
native
Annual herb 
© 2022 Mike Russler 
© 2020 John L. Thompson 
© 2020 Matt Berger |
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Logfia filaginoides California cottonrose
native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
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Lupinus bicolor Annual lupine, Bicolored lupine, Miniature lupine
native
Annual, Perennial herb 
© 2024 Mary Ann Machi 
© 2022 Mike Russler 
© 2024 Mary Ann Machi |
|
Lupinus concinnus Bajada lupine, Elegant lupine, Scarlet lupine
native
Annual herb 
© 2022 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2017 B.J. Dion |
|
Lupinus excubitus var. hallii Hall's bush lupine
native
Shrub 
© 2023 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
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Lupinus sparsiflorus Coulter's lupine, Mohave lupine, Mojave lupine
native
Annual herb 
© 2022 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
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Lupinus truncatus Blunt leaved lupine, Collared annual lupine, Truncate leaf lupine
native
Annual herb 
© 2023 Caitlin Kreutz 
© 2023 Connor O'Hara-Baker 
© 2010 Michael Mitchell |
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Lycium andersonii Anderson thornbush, Anderson's desert thorn, Water jacket
native
Shrub 
© 2010 Steve Matson 
© 2024 Ron Vanderhoff 
© 2010 Steve Matson |
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Malacothrix glabrata Desert dandelion, Smooth desertdandelion
native
Annual herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
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Marah macrocarpa Chilicothe
native
Perennial herb, Vine 
© 2020 David Greenberger 
© 2021 Emily Sluiman 
© 2021 david berman |
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Melica frutescens Heligrass, Tall melica, Woody melicgrass
native
Perennial grass 
© 2012 Keir Morse  © 2022 Neal Kramer 
© 2012 Keir Morse |
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Mentzelia albicaulis Small flowered blazing star, White stemmed blazing star, White stemmed stickleaf
native
Annual herb 
© 2023 Steve Ashcraft 
© 2024 Mike Russler 
© 2024 Mike Russler |
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Mimulus aurantiacus Orange Bush Monkeyflower
native
Shrub 
© 2024 Steve Conger 
© 2024 Steve Conger 
© 2019 Mary Gerbic |
|
Mirabilis laevis var. retrorsa Wishbone bush
native
Perennial herb 
© 2020 Steve Matson 
© 2020 Steve Matson 
© 2013 Steve Matson |
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Mollugo cerviana Carpet weed, Threadstem carpetweed
non-native
Annual herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
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Monardella linoides ssp. linoides Flax like monardella, Flaxleaf monardella
native
Perennial herb 
© 2012 Keir Morse 
© 2012 Keir Morse 
© 2012 Keir Morse |
|
Nemophila menziesii var. menziesii Baby blue eyes
native
Annual herb 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2005 Steve Matson |
|
Nicotiana glauca Tree tobacco
• invasive non-native
Tree, Shrub 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
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Opuntia basilaris var. basilaris Beavertail cactus, Beavertail pricklypear
native
Shrub (stem succulent) 
© 2019 Diane Etchison 
© 2019 Diane Etchison 
© 2023 Olesya Konovalova |
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Pectocarya heterocarpa Chuckwalla combseed, Chuckwalla pectocarya, Hairy leaved comb bur
native
Annual herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
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Pectocarya linearis ssp. ferocula Sagebrush combseed, Slender comb seed, Slender pectocarya
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
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Pectocarya penicillata Sleeping combseed, Winged comb seed, Winged pectocarya
native
Annual herb 
© 2011 Steve Matson 
© 2022 Steve Matson 
© 2011 Steve Matson |
|
Pectocarya recurvata Arch nutted comb bur, Curvenut combseed
native
Annual herb 
© 2020 Steve Matson 
© 2023 Steve Matson 
© 2020 Steve Matson |
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Pellaea mucronata var. mucronata Bird's foot fern
native
Fern 
© 2018 Rachelle Gray 
© 2023 Helen Hancock 
© 2023 Helen Hancock |
|
Pentagramma triangularis Gold back fern, Goldenback fern
native
Fern 
© 2024 Steve Conger 
© 2022 Cynthia Powell 
© 2023 Julia Markey |
|
Peritoma arborea Bladderpod
native
Shrub 
© 2022 Steven M Norris 
© 2024 Ron Vanderhoff 
© 2025 Mike Russler |
|
Phacelia campanularia ssp. campanularia Desert bells
native
Annual herb 
© 2023 Ryan O'Dell 
© 2021 Mike Russler 
© 2021 Mike Russler |
|
Phacelia distans Common phacelia, Distant phacelia, Wild heliotrope
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2022 Ron Vanderhoff |
|
Phacelia minor California bluebell, Wild canterbury bells
native
Annual herb 
© 2023 Julia Markey 
© 2023 Julia Markey 
© 2023 Julia Markey |
|
Pholistoma membranaceum White fiesta flower, White fiestaflower
native
Annual herb 
© 2025 Mike Russler 
© 2005 Steve Matson 
© 2025 Mike Russler |
|
Phoradendron californicum California mesquite mistletoe, Desert mistletoe, Mesquite mistletoe
native
Shrub (parasitic) 
© 2020 Steve Matson 
© 2020 Steve Matson 
© 2010 Steve Matson |
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Plagiobothrys arizonicus Arizona popcorn flower, Arizona popcornflower
native
Annual herb 
© 2020 Steve Matson 
© 2020 Steve Matson 
© 2020 Steve Matson |
|
Platanus racemosa California sycamore, Western sycamore
native
Tree 
© 2021 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Platystemon californicus Cream cups, Creamcups
native
Annual herb 
© 2017 Nathanial Wigington 
© 2022 John L. Thompson 
© 2022 John L. Thompson |
|
Poa secunda ssp. secunda One sided blue grass, Pine bluegrass, Sandberg's bluegrass
native
Perennial grass 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Populus fremontii ssp. fremontii Fremont cottonwood
native
Tree 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2020 Ron Vanderhoff |
|
Prosopis glandulosa var. torreyana Honey mesquite
native
Shrub 
© 2019 Ron Vanderhoff 
© 2015 Diane Etchison 
© 2021 Ron Vanderhoff |
|
Prunus ilicifolia ssp. ilicifolia Holly leaf cherry, Hollyleaf cherry
native
Tree, Shrub 
© 2023 Helen Hancock 
© 2024 Mike Russler 
© 2022 Ron Vanderhoff |
|
Psorothamnus arborescens var. simplicifolius California indigo bush, California indigobush
native
Shrub 
© 2017 Ron Vanderhoff  © 2018 Ron Vanderhoff  © 1995 Saint Mary's College of California |
|
Quercus wislizeni var. frutescens Bush interior live oak, Chaparral oak, Live oak
native
Tree, Shrub 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Rafinesquia neomexicana California chicory, Desert chicory, New mexico plumseed
native
Annual herb 
© 2022 Mike Russler 
© 2022 Mike Russler 
© 2022 Mike Russler |
|
Rhamnus ilicifolia Evergreen buckthorn, Hollyleaf redberry
native
Shrub 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2006 Steve Matson |
|
Rhus ovata Sugar bush, Sugar sumac
native
Shrub 
© 2020 Bryant Baker 
© 2020 Bryant Baker 
© 2024 Mike Russler |
|
Salix exigua Narrow leaved willow, Narrowleaf willow, Sandbar willow
native
Tree, Shrub 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Salix gooddingii Goodding's black willow, Goodding's willow, Gooding's willow
native
Tree 
© 2020 Ron Vanderhoff 
© 2021 Richard Spjut 
© 2020 Ron Vanderhoff |
|
Salvia apiana White sage
native
Shrub 
© 2019 Hannah Garcia 
© 2019 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Salvia carduacea Thistle sage
native
Annual herb 
© 2016 Steve Matson 
© 2016 Michael Mitchell 
© 2016 Michael Mitchell |
|
Salvia columbariae Chia sage
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2022 Mike Russler 
© 2022 Mike Russler |
|
Schismus barbatus Common mediterranean grass, Old han schismus
• invasive non-native
Annual grass 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Scrophularia californica California bee plant, California figwort
native
Perennial herb 
© 2020 Bob Sweatt 
© 2006 Steve Matson 
© 2019 Cynthia Powell |
|
Selaginella bigelovii Bigelow's moss fern, Bigelow's spike moss, Bushy spikemoss
native
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Senecio californicus California butterweed, California groundsel, California ragwort
native
Annual herb 
© 2019 Diane Etchison 
© 2023 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Senegalia greggii Catclaw, devil's claw
native
Shrub 
© 2021 Ron Vanderhoff 
© 2020 Susan McDougall 
© 2019 David Greenberger |
|
Solanum xanti Chaparral nightshade, Nightshade, Purple nightshade
native
Perennial herb, Shrub 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Sphaeralcea ambigua var. rugosa Apricot mallow, Desert globemallow
native
Perennial herb 
© 2023 R.A. Chasey 
© 2024 Mike Russler 
© 2024 Mike Russler |
|
Stephanomeria exigua ssp. exigua Mitra, Slender stephanomeria, Small wirelettuce
native
Annual herb 
© 2008 Steve Matson 
© 2022 Steve Matson 
© 2017 Steve Matson |
|
Stephanomeria pauciflora Brownplume wirelettuce, Desert straw, Wire lettuce
native
Perennial herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Stillingia linearifolia Linear leaved stillingia, Narrow leaved stillingia, Queen's root
native
Perennial herb 
© 2010 Steve Matson 
© 2010 Steve Matson 
© 2010 Steve Matson |
|
Stipa speciosa Desert needle grass
native
Perennial grass 
© 2011 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Tamarix ramosissima Saltcedar, Tamarisk
• invasive non-native
Tree, Shrub 
© 2025 richard mcneill 
© 2017 Barbara Boethling 
© 2022 Ron Vanderhoff |
|
Tropidocarpum gracile Dobie pod, Slender keel fruit, Slender tropidocarpum
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Yucca schidigera Mohave yucca, Mojave yucca
native
Tree 
© 2023 David Strauch 
© 2017 Margarita Orlova 
© 2020 Susan McDougall |
|
Ziziphus parryi var. parryi California crucillo, Lotebush, Parry abrojo
native
Shrub 
© 2019 Richard Spjut 
© 2019 Richard Spjut  © 2014 Keir Morse |
