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PCT: west of Warner Springs
west of Warner Springs, San Diego County San Diego County |
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| RT Hawke, Tom Chester, Keir Morse, Kate Harper, and Ted Caragozian (2015-10-20) | ||||||
| 152 PLANTS |
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Acmispon haydonii Pygmy lotus
• rare native
Perennial herb  © 1995 Saint Mary's College of California  © 1995 Saint Mary's College of California  © 1995 Saint Mary's College of California |
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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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Adenostoma sparsifolium Red shanks
native
Tree 
© 2024 Mike Russler 
© 2019 Aaron Echols 
© 2024 Mike Russler |
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Amaranthus albus Pigweed amaranth, Tumbleweed
non-native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2018 Ron Vanderhoff |
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Amaranthus californicus California amaranth, California pigweed
native
Annual herb 
© 2016 Gerald Carr 
© 2014 Jim Richards 
© 2016 Gerald Carr |
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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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Amaranthus powellii Powell's amaranth
native
Annual herb 
© 2022 Donald Burk 
© 2019 David popp  © 2015 Keir Morse |
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Ambrosia acanthicarpa Annual bursage, Annual burweed
native
Annual herb 
© 2009 Steve Matson 
© 2009 Steve Matson 
© 2013 Steve Matson |
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Ambrosia psilostachya Ragweed, Western ragweed
native
Perennial herb 
© 2021 Mary Ann Machi 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
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Amorpha fruticosa Desert indigobush, Western false indigo
native
Shrub 
© 2020 Ron Vanderhoff 
© 2008 Gerald Carr 
© 2018 Ron Vanderhoff |
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Amsinckia intermedia Common fiddleneck
native
Annual herb 
© 2020 Matt Berger 
© 2019 Ron Vanderhoff 
© 2021 David popp |
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Aristida purpurea Purple three awn, Purple threeawn
native
Perennial grass 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
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Aristida ternipes var. gentilis Spidergrass
native
Perennial grass 
© 2023 Donald Burk 
© 2019 David popp 
© 2020 Chris Velez |
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Artemisia douglasiana California mugwort, Douglas' sagewort
native
Perennial herb 
© 2022 Ron Vanderhoff 
© 2016 Glen Schneider 
© 2021 Mike Russler |
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Artemisia dracunculus Herbaceous sagewort, Pinon wormwood, Tarragon
native
Perennial herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
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Artemisia tridentata Big sagebrush, Common sagebrush
native
Shrub 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
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Astragalus douglasii var. parishii Parish's milk vetch
native
Perennial herb 
© 2011 Keir Morse 
© 2020 Juergen Schrenk 
© 2011 Keir Morse |
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Athysanus pusillus Athysanus, Common sandweed, Dwarf athysanus
native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
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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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native
Shrub 
© 2022 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2024 Holly Gray |
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Boerhavia coccinea Red boerhaavia, Scarlet spiderling
native
Perennial herb 
© 2018 James Bailey 
© 2018 James Bailey 
© 2019 Aaron Echols |
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Boerhavia triquetra var. intermedia Fivewing spiderling
native
Annual herb 
© 2022 R.A. Chasey  © 2011 Neal Kramer 
© 2022 R.A. Chasey |
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Bouteloua barbata var. barbata Six weeks grama
native
Annual grass 
© 2023 Keir Morse 
© 2023 Keir Morse 
© 2013 Steve Matson |
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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 hordeaceus Soft brome, Soft chess
• invasive non-native
Annual grass 
© 2023 Ron Vanderhoff 
© 2018 Gary McDonald 
© 2018 Gary McDonald |
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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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Camissoniopsis bistorta California sun cup
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2019 Ken Hickman |
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Carex praegracilis Clustered field sedge, Field sedge
native
Perennial grasslike herb 
© 2020 Steve Matson 
© 2020 Steve Matson 
© 2020 Steve Matson |
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Castilleja exserta ssp. exserta Exserted indian paintbrush, Pale purple owlclover, Purple owl's clover
native
Annual herb 
© 2020 David Greenberger 
© 2019 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
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Ceanothus cuneatus var. cuneatus Buck brush, Buckbrush
native
Shrub 
© 2021 Steve Matson 
© 2016 Steve Matson 
© 2021 Steve Matson |
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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 glabriuscula var. lanosa Pincushion flower, Woolly yellow chaenactis
native
Annual herb 
© 2019 Susan McDougall 
© 2019 Susan McDougall  © 2008 Keir Morse |
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Chamaesyce albomarginata Rattlesnake sandmat
native
Perennial herb 
© 2019 Diane Etchison 
© 2019 Cynthia Powell 
© 2019 Douglas Gordon-Blackwood |
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Chamaesyce micromera Sonoran sandmat
native
Annual herb 
© 2012 Steve Matson 
© 2012 Keir Morse 
© 2012 Keir Morse |
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Chamaesyce serpyllifolia ssp. hirtula Hairy thyme leafed spurge
native
Annual, Perennial herb 
© 2017 David Greenberger  © 2012 Aaron Schusteff  © © 2008 Keir Morse |
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Chamaesyce serpyllifolia ssp. serpyllifolia Thyme leafed spurge
native
Annual, Perennial herb 
© 2022 Steve Matson 
© 2024 Ron Vanderhoff 
© 2022 Steve Matson |
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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 fremontii Fremont's goosefoot
native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
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Chorizanthe fimbriata var. laciniata Lace fringed spineflower
native
Annual herb  © 2005 Aaron Schusteff  © 2014 Keir Morse  © 2014 Keir Morse |
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Cirsium scariosum Dwarf thistle, Elk thistle
native
Perennial herb 
© 2020 Bob Sweatt 
© 2022 Melissa Harbert 
© 2023 Ryan O'Dell |
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Cirsium vulgare Bull thistle
• invasive non-native
Perennial herb 
© 2017 James Bailey 
© 2020 Bob Sweatt 
© 2020 Bob Sweatt |
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Clarkia purpurea ssp. quadrivulnera Four-spot, Purple clarkia, Purple godetia
native
Annual herb 
© 2014 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
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Claytonia parviflora ssp. parviflora Narrow leaved miner's lettuce, Streambank springbeauty, Utah miner s lettuce
native
Annual herb 
© 2022 Ron Vanderhoff 
© 2017 Gary McDonald 
© 2017 Gary McDonald |
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Clematis ligusticifolia Creek clematis, Western white clematis, Yerba de chiva
native
Perennial herb, Vine 
© 2018 Diane Etchison 
© 2012 Steve Matson 
© 2012 Steve Matson |
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Collinsia concolor Southern Chinese houses
native
Annual herb 
© 2020 Julie Ann Watson 
© 2024 Erin Bergman 
© 2024 Erin Bergman |
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Cordylanthus rigidus ssp. setigerus Bristly Bird's Beak
native
Annual herb (hemiparasitic) 
© 2023 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2023 R.A. Chasey |
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Corethrogyne filaginifolia Common sandaster
native
Perennial herb 
© 2022 Mike Russler 
© 2018 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
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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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Croton californicus California croton, Desert croton
native
Perennial herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2017 Steve Matson |
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Croton setiger Turkey-mullein
native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2014 Richard Chasey |
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Cryptantha microstachys Popcorn flower, Tejon cryptantha
native
Annual herb 
© 2019 Diane Etchison 
© 2018 Ron Vanderhoff 
© 2017 Diane Etchison |
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Cryptantha muricata var. jonesii Jones' cryptantha
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
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Cucurbita foetidissima Calabazilla, Missouri gourd, Mock orange
native
Perennial herb, Vine 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2021 Ron Vanderhoff |
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Cuscuta californica California dodder, Chaparral dodder
native
Annual herb, Vine (parasitic) 
© 2019 Ron Vanderhoff 
© 2018 David popp 
© 2019 stephen rosenthal |
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Cylindropuntia californica var. parkeri Cane or valley cholla
native
Perennial herb (stem succulent) 
© 2023 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
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Cynodon dactylon Bermuda grass, Bermudagrass
• invasive non-native
Perennial grass 
© 2021 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
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Datura wrightii Jimsonweed, Sacred thorn apple, Toluaca
native
Perennial herb 
© 2019 Bonnie Nickel 
© 2019 Ron Vanderhoff 
© 2019 Bonnie Nickel |
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Descurainia sophia Flix weed, Herb sophia
• invasive non-native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
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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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Distichlis spicata Inland saltgrass, Salt grass, Saltgrass
native
Perennial grass 
© 2020 Matt Berger 
© 2019 Ron Vanderhoff 
© 2018 Emily Allen |
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Dysphania pumilio Tasmanian goosefoot
non-native
Annual herb 
© 2018 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Brett Austin |
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Elymus condensatus Giant wild rye
native
Perennial grass 
© 2020 Ron Vanderhoff 
© 2024 Mel Letterman 
© 2020 Diane Etchison |
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Elymus glaucus Blue wildrye
native
Perennial grass 
© 2020 Denise Defreese 
© 2019 Patrick Furtado 
© 2018 Cynthia Powell |
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Eragrostis cilianensis Stinkgrass
non-native
Annual grass 
© 2021 Donald Burk 
© 2024 Donald Burk 
© 2021 Donald Burk |
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Eriastrum sapphirinum ssp. sapphirinum Sapphire woollystar
native
Annual herb 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey |
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Ericameria pinifolia Pine bush, Pinebush
native
Shrub 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
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Erigeron canadensis Canada horseweed
native
Annual herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2022 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 gracile var. incultum Slender buckwheat, Slender woolly buckwheat
native
Annual herb 
© 2018 Fred Melgert / Carla Hoegen 
© 2018 Fred Melgert / Carla Hoegen  © 2024 Don Rideout |
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Eriogonum wrightii var. membranaceum Bastardsage, Wright s buckwheat, Wright's buckwheat
native
Perennial herb, Shrub 
© 2024 Mike Russler 
© 2024 Mike Russler 
© 2012 Keir Morse |
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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 brachycarpum Foothill filaree, Short fruited filaree, Shortfruit stork's bill
• invasive non-native
Annual herb 
© 2016 Bob van Duinen 
© 2016 Steve Matson 
© 2016 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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Frangula californica ssp. tomentella Hoary coffeeberry
native
Shrub 
© 2020 R.A. Chasey 
© 2016 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
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Fraxinus latifolia Oregon ash
native
Tree 
© 2021 Robert Whitaker 
© 2021 Richard Spjut 
© 2012 Terrence Gosliner |
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Galium angustifolium ssp. angustifolium Narrow leaved bedstraw, Narrowleaf bedstraw
native
Perennial herb 
© 2017 Steve Matson 
© 2020 Ron Vanderhoff 
© 2017 Steve Matson |
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Galium aparine Cleavers, Common bedstraw, Goose grass
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2023 Julia Markey 
© 2020 Ron Vanderhoff |
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Gilia angelensis Chaparral gilia
native
Annual herb 
© 2023 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
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Gutierrezia sarothrae Broom snakeweed, Common snakeweed, Matchweed
native
Shrub 
© 2007 Steve Matson 
© 2007 Steve Matson 
© 2007 Steve Matson |
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Heliotropium curassavicum var. oculatum Alkali heliotrope, Seaside heliotrope
native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2019 Rachelle Gray 
© 2021 Suzanne L. Weakley |
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Heterotheca sessiliflora ssp. echioides Bristly goldenaster, Sessileflower false goldenaster
native
Perennial herb 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2018 Ron Vanderhoff |
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Hirschfeldia incana Mediterranean hoary mustard, Short podded mustard, Summer mustard
• invasive non-native
Perennial herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2022 Ron Vanderhoff |
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Hordeum murinum Farmer's foxtail, Foxtail barley, Mouse barley
• invasive non-native
Annual grass 
© 2018 Gary McDonald 
© 2021 Ron Vanderhoff 
© 2017 Gary McDonald |
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Lasthenia gracilis Needle goldfields
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
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Lepidium virginicum Virginia pepperweed, Wild pepper grass
native
Annual herb 
© 2020 David Greenberger 
© 2020 Aaron Echols 
© 2021 Jacob Smith |
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Leptosiphon liniflorus Narrowflower flaxflower
native
Annual herb 
© 2017 Aaron Echols 
© 2022 Ron Vanderhoff 
© 2023 Diana Wahl |
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Lessingia glandulifera var. glandulifera Sticky lessingia, Valley lessingia
native
Annual herb 
© 2008 Steve Matson 
© 2015 Steve Matson 
© 2016 Steve Matson |
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Linanthus dianthiflorus Fringed linanthus
native
Annual herb 
© 2022 Ron Vanderhoff 
© 2017 Diane Etchison 
© 2023 Ron Vanderhoff |
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Lonicera subspicata var. denudata Chaparral honeysuckle, Johnston's honeysuckle, Santa barbara honeysuckle
native
Shrub 
© 2019 Diane Etchison 
© 2021 Ron Vanderhoff 
© 2019 Diane Etchison |
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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 |
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Lupinus hirsutissimus Stinging annual lupine, Stinging lupine
native
Annual herb 
© 2024 Mike Russler 
© 2023 Neil Uelman 
© 2019 Ron Vanderhoff |
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Malacothrix californica California dandelion, Desert dandelion
native
Annual herb 
© 2023 David Wolfson 
© 2023 David Wolfson 
© 2024 Ron Vanderhoff |
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Malvella leprosa Alkali mallow
native
Perennial herb 
© 2019 Bonnie Nickel 
© 2019 Bonnie Nickel 
© 2024 Mike Russler |
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Marrubium vulgare White horehound
• invasive non-native
Perennial herb 
© ©2013 Gary McDonald 
© 2015 Diane Etchison 
© 2018 Nancy Hamlett |
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Matricaria discoidea Pineapple weed
native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2018 Stacie Wolny |
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Melica imperfecta California melic, Coast range melic, Small flowered melica
native
Perennial grass 
© 2020 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
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Melilotus indicus Annual yellow sweetclover, Sourclover
non-native
Annual herb 
© 2019 Randy Huey 
© 2019 Randy Huey 
© 2017 Rosalie Benitez |
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Mirabilis multiflora var. pubescens Colorado four o'clock, Desert four o'clock
native
Perennial herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
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Muhlenbergia rigens Deergrass
native
Perennial grass 
© 2004 Steve Matson 
© 2018 Cynthia Powell 
© 2022 Ron Vanderhoff |
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Navarretia atractyloides Holly leaf navarretia, Hollyleaf pincushionplant
native
Annual herb 
© 2019 Diane Etchison 
© 2010 George Butterworth 
© 2019 Ken Hickman |
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Nemophila menziesii var. menziesii Baby blue eyes
native
Annual herb 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2005 Steve Matson |
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Opuntia phaeacantha Brown spined prickly pear, Mojave prickly pear, Tulip pricklypear
native
Shrub (stem succulent) 
© 2021 R.A. Chasey 
© 2018 Diane Etchison 
© 2021 R.A. Chasey |
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Parkinsonia aculeata Jerusalem thorn, Mexican palo verde
• invasive non-native
Tree 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
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Penstemon centranthifolius Scarlet bugler
native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2017 Diane Etchison 
© 2021 Mike Russler |
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Penstemon spectabilis var. spectabilis Showy penstemon
native
Perennial herb 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
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Pentagramma triangularis ssp. triangularis Gold back fern
native
Fern 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2019 Gary McDonald |
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Phacelia distans Common phacelia, Distant phacelia, Wild heliotrope
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2022 Ron Vanderhoff |
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Phacelia ramosissima Branching phacelia
native
Perennial herb 
© 2005 Steve Matson 
© 2022 Rosalind Helfand 
© 2020 Ron Vanderhoff |
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Phoradendron serotinum ssp. tomentosum Mistletoe
native
Shrub (parasitic) 
© 2022 David popp 
© 2020 R.A. Chasey 
© 2021 R.A. Chasey |
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Plagiobothrys arizonicus Arizona popcorn flower, Arizona popcornflower
native
Annual herb 
© 2020 Steve Matson 
© 2020 Steve Matson 
© 2020 Steve Matson |
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Plagiobothrys canescens var. canescens Valley popcornflower
native
Annual herb 
© 2019 Diane Etchison 
© 2015 Diane Etchison 
© 2022 Catherine Chang |
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Plagiobothrys tenellus Pacific popcornflower, Popcorn flower, Slender popcorn flower
native
Annual herb 
© 2023 Larry Dizmang 
© 2023 Larry Dizmang 
© 2022 Mike Russler |
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Populus fremontii ssp. fremontii Fremont cottonwood
native
Tree 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2020 Ron Vanderhoff |
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Portulaca oleracea Common purslane, Little hogweed, Purslane
non-native
Annual herb 
© 2020 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2020 R.A. Chasey |
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Proboscidea louisianica ssp. louisianica Common devil's claw, Ram's horn
non-native
Annual herb 
© 0000 Zoya Akulova-Barlow 
© 2012 Shari Gardner 
© 2024 Mel Letterman |
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Prunus ilicifolia ssp. ilicifolia Holly leaf cherry, Hollyleaf cherry
native
Tree, Shrub 
© 2023 Helen Hancock 
© 2024 Mike Russler 
© 2022 Ron Vanderhoff |
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Pseudognaphalium beneolens Cudweed
native
Perennial herb 
© 2021 BLM Redding Field Office 
© 2021 Mike Russler 
© 2021 R.A. Chasey |
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Pterostegia drymarioides Fairy mist, Woodland threadstem
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2005 Steve Matson |
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Quercus agrifolia var. oxyadenia Coast live oak, Sharpacorn oak
native
Tree 
© 2017 Michelle Tollett 
© 2020 David Greenberger 
© 2023 Nathan Taylor |
|
Quercus engelmannii Engelmann oak
• rare native
Tree 
© 2022 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
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Quercus Xacutidens Torrey's hybrid oak
native
Shrub, Tree 
© 2017 Diane Etchison  © 2004 Charles E. Jones  © 2004 Charles E. Jones |
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Rafinesquia californica California chicory, California plumseed
native
Annual herb 
© 2023 Robert Steers 
© 2021 Ron Vanderhoff 
© 2017 Steve Matson |
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Rhus aromatica Fragrant sumac, Skunk Bush
native
Shrub 
© 2018 Steve Matson 
© 2018 Steve Matson 
© 2018 Steve Matson |
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Rosa californica California wild rose, California wildrose
native
Shrub 
© 2022 Suzanne L. Weakley 
© 2022 Suzanne L. Weakley 
© 2021 Sue Graue |
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Rumex crispus Curly dock, Curly leaved dock, Rhubarb
• invasive non-native
Perennial herb 
© 2018 Tim Lewis 
© 2019 Diane Etchison 
© 2023 Ron Vanderhoff |
|
Salix laevigata Polished willow, Red willow
native
Tree 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Salix lasiolepis Arroyo willow
native
Tree, Shrub 
© 2019 Steve Matson 
© 2022 Ron Vanderhoff 
© 2020 Steve Matson |
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Salsola australis Russian thistle
non-native
Annual herb 
© 2019 Ron Vanderhoff 
© 2017 James Bailey 
© 2025 Laguna Canyon Foundation |
|
Salsola tragus Prickly russian thistle, Russianthistle, Tumbleweed
• invasive non-native
Annual herb 
© 2017 Ron Vanderhoff 
© 2018 Angelique Herman 
© 2023 Cynthia Powell |
|
Salvia columbariae Chia sage
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2022 Mike Russler 
© 2022 Mike Russler |
|
Sambucus caerulea Blue elderberry
native
Shrub 
© 2020 Diane Etchison 
© 2021 Richard Spjut 
© 2016 Chris Leslie |
|
Schismus barbatus Common mediterranean grass, Old han schismus
• invasive non-native
Annual grass 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Senecio flaccidus var. monoensis Mono groundsel, Mono ragwort
native
Shrub 
© 2020 Steve Matson 
© 2020 Steve Matson 
© 2020 Steve Matson |
|
Sisymbrium altissimum Tall tumblemustard, Tumble mustard, Tumbling mustard
non-native
Annual herb 
© 2019 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Sisymbrium irio London rocket
• invasive non-native
Annual herb 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Mike Russler |
|
Solidago velutina ssp. californica California goldenrod, Oreja de liebre
native
Perennial herb 
© 2013 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Spergularia bocconi Boccone's sand spurry
non-native
Annual herb 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Sphaeralcea ambigua var. rugosa Apricot mallow, Desert globemallow
native
Perennial herb 
© 2023 R.A. Chasey 
© 2024 Mike Russler 
© 2024 Mike Russler |
|
Sporobolus cryptandrus Sand dropseed
native
Perennial grass 
© 2022 Steve Matson 
© 2012 Steve Matson 
© 2022 Steve Matson |
|
Stephanomeria exigua ssp. deanei Dean's stephanomeria, Deane's wirelettuce
native
Annual herb 
© 2012 Keir Morse 
© 2012 Keir Morse 
© 2012 Keir Morse |
|
Stipa cernua Nodding needle grass
native
Perennial grass 
© 2018 Liz Block 
© 2022 Ron Vanderhoff 
© 2022 Dianne Lake |
|
Tamarix ramosissima Saltcedar, Tamarisk
• invasive non-native
Tree, Shrub 
© 2025 richard mcneill 
© 2017 Barbara Boethling 
© 2022 Ron Vanderhoff |
|
Tribulus terrestris Puncture vine, Puncturevine
• invasive non-native
Annual herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2020 Ron Vanderhoff |
|
Uropappus lindleyi Silver puffs, Uropappus
native
Annual herb 
© 2019 Zack Abbey 
© 2019 Ron Vanderhoff 
© 2016 Ron Vanderhoff |
|
Urtica dioica ssp. holosericea Giant creek nettle, Hoary nettle, Mountain nettle
native
Perennial herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Verbascum thapsus Common mullein, Woolly mullein
• invasive non-native
Perennial herb 
© 2021 R.A. Chasey 
© 2020 Kim Cabrera 
© 2016 Cynthia Powell |
|
Wyethia ovata Southern mule ears, Southern wyethia
native
Perennial herb 
© 2020 Ron Vanderhoff 
© 2016 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Yucca schidigera Mohave yucca, Mojave yucca
native
Tree 
© 2023 David Strauch 
© 2017 Margarita Orlova 
© 2020 Susan McDougall |
