| ||||||
|
Santa Susana Pass State Historic Park
Los Angeles County |
|
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| Richard Burg, Michael Bonk / California State Parks (2006-05-17) | ||||||
| 160 PLANTS |
|
Achillea millefolium Common yarrow
native
Perennial herb 
© 2022 Andy Ford 
© 2020 Bob Sweatt 
© 2018 Gary McDonald |
|
Achnatherum coronatum Crested needle grass
native
Perennial grass 
© 2024 Ron Vanderhoff 
© 2024 Alisa Flint 
© 2019 Rachelle Gray |
|
Acourtia microcephala Sacapellote
native
Perennial herb 
© 2022 Diane Etchison 
© 2019 Ron Vanderhoff 
© 2021 Aaron Echols |
|
Adenostoma fasciculatum Chamise
native
Tree, Shrub 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Allophyllum divaricatum Purple false gilia, Purple false gilyflower, Straggling gilia
native
Annual herb 
© 2015 Ron Vanderhoff 
© 2019 David Greenberger 
© 2022 BOB CASE |
|
Alnus rhombifolia White alder
native
Tree 
© 2005 BOB CASE 
© 2014 Garth Wadsworth 
© 2023 Ron Vanderhoff |
|
Ambrosia psilostachya Ragweed, Western ragweed
native
Perennial herb 
© 2021 Mary Ann Machi 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Amorpha californica California false indigo, False indigo, Mock locust
native
Shrub 
© 2019 Ron Vanderhoff 
© 2022 Suzanne L. Weakley 
© 2018 Jennifer Poore |
|
Anagallis arvensis Scarlet pimpernel
non-native
Annual herb 
© 2017 B.J. Dion 
© 2022 Chris McDonald 
© 2023 Ron Vanderhoff |
|
Antirrhinum coulterianum Coulter snapdragon, Coulter's snapdragon
native
Annual herb 
© 2019 Lynn Sweet 
© 2019 Aaron Echols 
© 2019 Hailey Laskey |
|
Antirrhinum kelloggii Climbing snapdragon, Kellogg's snapdragon, Lax snapdragon
native
Annual herb 
© 2024 David Strauch 
© 2019 David Greenberger 
© 2019 Ron Vanderhoff |
|
Arctostaphylos glandulosa Cushing manzanita
native
Shrub 
© 2019 Susan McDougall 
© 2016 Dana York 
© 2016 Dana York |
|
Artemisia californica California sagebrush, Coast sagebrush, Coastal sage brush
native
Shrub 
© 2018 James Gonsman 
© 2019 Aaron Echols 
© 2018 Ron Vanderhoff |
|
Asclepias fascicularis Narrow leaf milkweed
native
Perennial herb 
© 2010 Steve Matson 
© 2010 Steve Matson 
© 2014 Steve Matson |
|
Aspidotis californica California lace fern, California lacefern
native
Fern 
© 2020 R.A. Chasey 
© 2018 Hunter Breck 
© 2021 Ron Vanderhoff |
|
Avena fatua Wild oat, Wildoat
• invasive non-native
Annual grass 
© 2018 Gary McDonald 
© 2023 Ron Vanderhoff 
© 2023 Matt Berger |
|
Baccharis pilularis Coyote brush, Dwarf chaparral broom
native
Shrub 
© 2022 Ryan O'Dell 
© 2021 Ron Vanderhoff: Staminate and pistillate plants in flower. 
© 2018 Cynthia Powell |
|
Brassica nigra Black mustard
• invasive non-native
Annual herb 
© 2021 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Brickellia californica Brickell bush, California brickellbush, California brickellia
native
Perennial herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Bromus carinatus California brome
native
Perennial grass 
© 2020 Ron Vanderhoff 
© 2022 David popp 
© 2014 Vertin Alvarez |
|
Bromus diandrus Bromegrass, Ripgut brome, Ripgut grass
• invasive non-native
Annual grass 
© Alize 
© 2021 Richard Spjut 
© 2024 David popp |
|
Bromus rubens Red brome
• invasive non-native
Annual grass 
© 2015 Chris Jaster 
© 2015 jamie smith 
© 2018 Gary McDonald |
|
Calochortus catalinae Catalina mariposa lily
• rare native
Perennial herb (bulb) 
© 2017 Steve Matson 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Calochortus clavatus Club haired mariposa, Clubhair mariposa lily
native
Perennial herb 
© 2019 Bryant Baker 
© 2019 Cynthia Griffin 
© 2020 David Wolfson |
|
Calochortus plummerae Plummer's mariposa lily
• rare native
Perennial herb (bulb) 
© 2020 Emily Sluiman 
© 2022 Ron Vanderhoff 
© 2018 David Greenberger |
|
Calystegia macrostegia Island false bindweed, Island morning glory
native
Perennial herb, Vine 
© 2020 Steven M Norris 
© 2022 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Camissonia californica California primrose
native
Annual herb 
© 2019 Elexis Padron 
© 2019 Ron Vanderhoff 
© 2019 Elexis Padron |
|
Carduus pycnocephalus Italian thistle
• invasive non-native
Annual herb 
© 2019 Gary McDonald 
© 2023 Diana Wahl 
© 2023 Ron Vanderhoff |
|
Carpobrotus edulis Hottentot fig, Iceplant, Sea fig
• invasive non-native
Perennial herb 
© 2021 Michelle Karle 
© 2017 Lisa Miller 
© 2018 Michael Chasse |
|
Ceanothus spinosus Greenbark ceanothus, Redheart
native
Tree, Shrub 
© 2018 Ron Vanderhoff 
© 2012 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Centaurea melitensis Maltese star thistle, Napa star thistle, Tocalote
• invasive non-native
Annual herb 
© 2019 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2020 Laura Anna Arellano |
|
Cercocarpus betuloides Birch leaf mountain mahogany, Mountain mahogany
native
Tree, Shrub 
© 2020 Rebecca Schoenenberger 
© 2020 Aaron Echols 
© 2016 Cindy Roessler |
|
Chaenactis artemisiifolia Artemisia leaved chaenactis, White pincushion
native
Annual herb 
© 2022 Rosalind Helfand 
© 2023 Julia Markey 
© 2022 Ron Vanderhoff |
|
Chlorogalum pomeridianum Amole, Soap plant, Soaproot
native
Perennial herb 
© 2019 Patrick Furtado 
© 2020 Robert Katz 
© 2019 Diane Etchison |
|
Chorizanthe staticoides Turkish rugging
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2019 Bryant Baker 
© 2019 Ron Vanderhoff |
|
Cirsium occidentale Cobweb thistle, Western thistle
native
Perennial herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Cistus creticus Hairy rockrose
non-native
Shrub 
© 2020 Karen Swift 
© 2023 Ron Vanderhoff 
© 2018 Julian Geoghegan |
|
Clarkia purpurea Purple clarkia, Winecup clarkia
native
Annual herb 
© 2022 Ron Vanderhoff 
© 2019 Stacie Wolny 
© 2021 Mary Conway |
|
Clarkia unguiculata Elegant clarkia, Mountain garland, Woodland clarkia
native
Annual herb 
© 2019 David Greenberger 
© 2019 Bryant Baker 
© 2021 Mike Russler |
|
Claytonia perfoliata Miners lettuce, Miner's lettuce, Rooreh (Ohlone)
native
Annual herb 
© 2008 Steve Matson 
© 2019 Gary McDonald 
© 2020 Ron Vanderhoff |
|
Collinsia heterophylla Purple chinese houses
native
Annual herb 
© 2022 Mary Ann Machi 
© 2019 David Greenberger 
© 2019 Ron Vanderhoff |
|
Conium maculatum Poison hemlock
• invasive non-native
Perennial herb 
© 2024 Cynthia Powell 
© 2013 Toni Corelli 
© 2016 Cynthia Powell |
|
Conyza canadensis Canada horseweed
native
Annual herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2022 Mike Russler |
|
Crassula connata Pigmy weed, Sand pygmy weed, Sand pygmyweed
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Susan McDougall |
|
Cryptantha micromeres Minute flowered cryptantha, Pygmyflower cryptantha, Small flowered cryptantha
native
Annual herb 
© 2021 Jodi McGraw 
© 2020 Ken Hickman 
© 2019 John Rawlings |
|
Cuscuta californica California dodder, Chaparral dodder
native
Annual herb, Vine (parasitic) 
© 2019 Ron Vanderhoff 
© 2018 David popp 
© 2019 stephen rosenthal |
|
Cyperus eragrostis Tall cyperus, Tall flatsedge
native
Perennial grasslike herb 
© 2016 Joan Hampton 
© 2021 Ken Lunders 
© 2014 James Gonsman |
|
Datura wrightii Jimsonweed, Sacred thorn apple, Toluaca
native
Perennial herb 
© 2019 Bonnie Nickel 
© 2019 Ron Vanderhoff 
© 2019 Bonnie Nickel |
|
Daucus pusillus American wild carrot, Rattlesnake weed
native
Annual herb 
© 2019 Diane Etchison 
© 2022 David Wolfson 
© 2019 John Rawlings |
|
Delphinium cardinale Scarlet larkspur
native
Perennial herb 
© Geoff Burleigh 
© 2021 Colin Barrows 
© 2018 Mike Libby |
|
Delphinium parryi San bernardino larkspur
native
Perennial herb 
© 2019 Diane Etchison 
© Geoff Burleigh 
© 2019 Diane Etchison |
|
Dichelostemma capitatum Blue dicks
native
Perennial herb 
© 2023 Steve Matson 
© 2023 Steve Matson 
© 2022 Steve Matson |
|
Dryopteris arguta California wood fern, Coastal wood fern, Shield fern
native
Fern 
© 2023 Julia Markey 
© 2019 Rebecca Crowe 
© 2018 James Gonsman |
|
Dudleya lanceolata Lanceleaf liveforever, Southern california dudleya
native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2020 Steven M Norris 
© 2020 Steven M Norris |
|
Eleocharis montevidensis Montevideo spike rush, Sand spikerush
native
Perennial grasslike herb 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2020 John Rawlings |
|
Emmenanthe penduliflora Whispering bells, Whisperingbells
native
Annual herb 
© 2022 Steve Matson 
© 2023 Julia Markey 
© 2022 David Strauch |
|
Encelia californica Bush sunflower, California brittlebush, California encelia
native
Shrub 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Epilobium canum California fuchsia, Hummingbird trumpet, zauschneria
native
Perennial herb 
© 2018 Ron Vanderhoff 
© 2015 Gerald Carr 
© 2022 David Strauch |
|
Eremocarpus setigerus Turkey-mullein
native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2014 Richard Chasey |
|
Eriodictyon crassifolium Felt leaved yerba santa, Thick leaved yerba santa, Thickleaf yerba santa
native
Shrub 
© 2023 Julia Markey 
© 2020 Bonnie Nickel 
© 2021 Mary Herr |
|
Eriogonum elongatum Longstem buckwheat
native
Perennial herb 
© 2022 David Strauch 
© 2017 Ron Vanderhoff 
© 2024 Mel Letterman |
|
Eriogonum fasciculatum California buckwheat, Eastern mojave buckwheat
native
Shrub 
© 2024 Shari Suzuki 
© 2024 Cynthia Powell 
© 2020 Steven M Norris |
|
Eriophyllum confertiflorum Golden yarrow, Yellow yarrow
native
Shrub 
© 2019 Stacie Wolny 
© 2022 Mojgan Mahdizadeh 
© 2019 Marisa Persaud |
|
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 |
|
Eucrypta chrysanthemifolia Common eucrypta, Spotted eucrypta, Spotted hideseed
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Filago californica California cottonrose
native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Filago gallica Narrowleaf cottonrose
non-native
Annual herb 
© 2017 Barbara Boethling 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Foeniculum vulgare Biscuit root, Sweet fennel
• invasive non-native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2023 Fred Roberts 
© 2022 Ryan O'Dell |
|
Fraxinus dipetala California ash, Flowering ash, Foothill ash
native
Tree, Shrub 
© 2023 Ron Vanderhoff 
© 2021 Bryant Baker 
© 2021 Bryant Baker |
|
Galium angustifolium Narrow leaved bedstraw, Narrowleaf bedstraw
native
Perennial herb 
© 2019 Keir Morse 
© 2019 Bonnie Nickel 
© 2017 Diane Etchison |
|
Gilia angelensis Chaparral gilia
native
Annual herb 
© 2023 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Gnaphalium californicum Ladies' tobacco
native
Annual, Perennial herb 
© 2019 Gary McDonald 
© 2020 Steven M Norris 
© 2021 Ron Vanderhoff |
|
Gnaphalium canescens Wright's cudweed
native
Perennial herb  © 2005 Laura Ann Eliassen  © 2005 Keir Morse  © 2010 Gary A. Monroe |
|
Gnaphalium stramineum Cottonbatting plant
native
Perennial herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2017 Gary McDonald |
|
Helianthemum scoparium Peak Rushrose
native
Shrub 
© 2018 Amy Rapport 
© 2023 Ron Vanderhoff 
© 2024 Mike Russler |
|
Helianthus annuus Common sunflower, Hairy leaved sunflower, Sunflower
native
Annual herb 
© 2021 Mike Russler 
© 2019 Bob Case 
© 2024 Mel Letterman |
|
Helianthus gracilentus Slender sunflower
native
Perennial herb 
© 2021 Ron Vanderhoff 
© 2021 Mike Russler 
© 2021 Diane Etchison |
|
Hemizonia fasciculata Clustered tarweed
native
Annual herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Hemizonia minthornii Santa susana tarplant
• rare native
Shrub 
© 2022 Suzanne L. Weakley 
© 2023 David Strauch 
© Geoff Burleigh |
|
Heteromeles arbutifolia Christmas berry, Toyon
native
Shrub 
© 2015 James Gonsman 
© 2017 Gary McDonald 
© 2022 John Doyen |
|
Hirschfeldia incana Mediterranean hoary mustard, Short podded mustard, Summer mustard
• invasive non-native
Perennial herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2022 Ron Vanderhoff |
|
Hypochaeris glabra Smooth cat's ear
• invasive non-native
Annual herb 
© 2020 Ron Vanderhoff 
© 2017 Gary McDonald 
© 2019 Ron Vanderhoff |
|
Isocoma menziesii Menzies' goldenbush
native
Shrub 
© 2014 Steve Matson 
© 2006 Steve Matson 
© 2014 Steve Matson |
|
Juglans californica Southern black walnut, Southern california walnut, Southern california black walnut
• rare native
Tree 
© 2014 Garth Wadsworth 
© 2022 Aaron Echols 
© 2022 Ron Vanderhoff |
|
Keckiella cordifolia Climbing penstemon, Heart leaved keckiella, Heartleaf keckiella
native
Shrub 
© 2020 Ron Vanderhoff 
© 2022 Bryant Baker 
© 2022 Bryant Baker |
|
Lamarckia aurea Goldentop grass
non-native
Annual grass 
© 2017 B.J. Dion 
© 2019 Ron Vanderhoff 
© 2015 James Gonsman |
|
Lathyrus vestitus Bolander's pea, Common pacific pea, Pacific peavine
native
Perennial herb 
© 2018 Stacie Wolny 
© 2019 Ron Vanderhoff 
© 2019 Steve Conger |
|
Leptodactylon californicum Prickly phlox
native
Shrub 
© 2018 Ron Vanderhoff 
© 2020 Matt Berger 
© 2019 Diane Etchison |
|
Lessingia filaginifolia Common sandaster
native
Perennial herb 
© 2022 Mike Russler 
© 2018 Ron Vanderhoff 
© 2019 Diane Etchison |
|
Leymus condensatus Giant wild rye
native
Perennial grass 
© 2020 Ron Vanderhoff 
© 2024 Mel Letterman 
© 2020 Diane Etchison |
|
Lonicera subspicata Southern honeysuckle
native
Shrub 
© 2022 David Strauch 
© 2017 Diane Etchison 
© 2018 David Greenberger |
|
Lotus argophyllus Silver birds foot trefoil
native
Perennial herb 
© 2014 Steve Matson 
© 2023 Jamie Spielmann 
© 2018 Ron Vanderhoff |
|
Lotus purshianus American bird's foot trefoil, Spanish lotus
native
Annual herb 
© 2019 Rachelle Gray 
© 2013 Arcangelo Wessells 
© 2017 David Wolfson |
|
Lotus scoparius Deerweed
native
Perennial herb 
© 2021 Ron Vanderhoff 
© 2019 Diane Etchison 
© 2020 Ron Vanderhoff |
|
Lotus strigosus Strigose lotus
native
Annual herb 
© 2024 Mike Russler 
© 2023 Ron Vanderhoff 
© 2016 Steve Matson |
|
Lupinus bicolor Annual lupine, Bicolored lupine, Miniature lupine
native
Annual, Perennial herb 
© 2024 Mary Ann Machi 
© 2022 Mike Russler 
© 2024 Mary Ann Machi |
|
Lupinus hirsutissimus Stinging annual lupine, Stinging lupine
native
Annual herb 
© 2024 Mike Russler 
© 2023 Neil Uelman 
© 2019 Ron Vanderhoff |
|
Lupinus sparsiflorus Coulter's lupine, Mohave lupine, Mojave lupine
native
Annual herb 
© 2022 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Malacothamnus fasciculatus Chaparral bushmallow, Southern coastal bushmallow
native
Shrub 
© 2020 Aaron Echols 
© 2020 Ron Vanderhoff 
© 2024 Ron Vanderhoff |
|
Malacothrix clevelandii Cleveland's dandelion, Cleveland's desertdandelion, Cleveland's malacothrix
native
Annual herb 
© 2021 Steve Laymon 
© 2022 Mike Russler 
© 2023 R.A. Chasey |
|
Malacothrix saxatilis Cliff aster, Cliff desertdandelion
native
Perennial herb 
© 2019 Marisa Persaud 
© 2023 Ron Vanderhoff 
© 2019 Adonis Tate |
|
Malosma laurina Laurel sumac
native
Tree, Shrub 
© 2015 Steven M Norris 
© 2018 susan Bashore 
© 2024 Bonnie Nickel |
|
Malva parviflora Cheeseweed mallow
non-native
Annual herb 
© 2022 Mike Russler 
© 2022 Donald Burk 
© 2022 Mike Russler |
|
Marrubium vulgare White horehound
• invasive non-native
Perennial herb 
© ©2013 Gary McDonald 
© 2015 Diane Etchison 
© 2018 Nancy Hamlett |
|
Medicago polymorpha Bur clover, Bur medic, California burclover
• invasive non-native
Annual herb 
© 2019 Gary McDonald 
© 2019 Gary McDonald 
© 2019 Gary McDonald |
|
Melica imperfecta California melic, Coast range melic, Small flowered melica
native
Perennial grass 
© 2020 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Melilotus indicus Annual yellow sweetclover, Sourclover
non-native
Annual herb 
© 2019 Randy Huey 
© 2019 Randy Huey 
© 2017 Rosalie Benitez |
|
Mimulus aurantiacus Orange Bush Monkeyflower
native
Shrub 
© 2024 Steve Conger 
© 2024 Steve Conger 
© 2019 Gary McDonald |
|
Mimulus cardinalis Cardinal monkey flower
native
Perennial herb 
© 2023 Steve Conger 
© 2014 James Gonsman 
© 2023 Mary Ann Machi |
|
Mirabilis californica California four o'clock
native
Perennial herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Nicotiana glauca Tree tobacco
• invasive non-native
Tree, Shrub 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Paeonia californica California peony
native
Perennial herb 
© 2024 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2019 Susan McDougall |
|
Parietaria hespera Pelitory, Pellitory, Rillita pellitory
native
Annual herb 
© 2022 Matt Berger 
© 2019 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Parietaria hespera var. californica California pellitory
native
Annual herb 
© 2003 Keir Morse 
© 2003 Keir Morse 
© 2003 Keir Morse |
|
Pellaea mucronata Bird's foot fern, Birdfoot cliffbrake, Birdfoot fern
native
Fern 
© 2012 Ron Vanderhoff 
© 2022 Helen Hancock 
© 2023 Julia Markey |
|
Penstemon heterophyllus Bunchleaf penstemon, Foothill penstemon
native
Perennial herb 
© 2024 Susan White 
© 2021 Charles Russell 
© 2020 Diane Etchison |
|
Pentagramma triangularis Gold back fern, Goldenback fern
native
Fern 
© 2024 Steve Conger 
© 2022 Cynthia Powell 
© 2023 Julia Markey |
|
Phacelia cicutaria Caterpillar phacelia
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2016 Julie Watson 
© 2020 Shane Hanofee |
|
Phacelia distans Common phacelia, Distant phacelia, Wild heliotrope
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2022 Ron Vanderhoff |
|
Phacelia imbricata Imbricate phacelia
native
Perennial herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Phacelia ramosissima Branching phacelia
native
Perennial herb 
© 2005 Steve Matson 
© 2022 Rosalind Helfand 
© 2020 Ron Vanderhoff |
|
Piptatherum miliaceum Smilo grass
• invasive non-native
Perennial grass 
© 2022 Donald Burk 
© 2022 Ron Vanderhoff 
© 2022 Donald Burk |
|
Platanus racemosa California sycamore, Western sycamore
native
Tree 
© 2021 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Populus fremontii Fremont cottonwood
native
Tree 
© 2018 Julie Kierstead Nelson 
© 2020 Julie A. Kierstead 
© 2019 Hailey Laskey |
|
Pterostegia drymarioides Fairy mist, Woodland threadstem
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2005 Steve Matson |
|
Quercus agrifolia California live oak, Coast live oak
native
Tree 
© 2019 Patrick Furtado 
© 2022 Andy Ford 
© 2018 Marcyn Del Clements |
|
Quercus berberidifolia Inland scrub oak
native
Tree 
© 2022 David Strauch 
© 2024 Mike Russler 
© 2022 David Strauch |
|
Rafinesquia californica California chicory, California plumseed
native
Annual herb 
© 2023 Robert Steers 
© 2021 Ron Vanderhoff 
© 2017 Steve Matson |
|
Rhamnus californica California coffeeberry
native
Shrub 
© 2015 Steve Matson 
© 2016 Steve Matson 
© 2015 Steve Matson |
|
Rhus integrifolia Lemonade berry, Lemonade sumac
native
Shrub 
© 2024 Mike Russler 
© 2019 Ron Vanderhoff 
© 2024 Mike Russler |
|
Rhus ovata Sugar bush, Sugar sumac
native
Shrub 
© 2020 Bryant Baker 
© 2020 Bryant Baker 
© 2024 Mike Russler |
|
Ribes malvaceum Chaparral currant
native
Shrub 
© 2020 Bryant Baker 
© 2020 Bryant Baker 
© 2020 Bryant Baker |
|
Ricinus communis Castor bean, Castorbean
• invasive non-native
Shrub 
© 2017 Henry DiRocco 
© 2020 Aaron Echols 
© 2022 Ron Vanderhoff |
|
Salix gooddingii Goodding's black willow, Goodding's willow, Gooding's willow
native
Tree 
© 2020 Ron Vanderhoff 
© 2021 Richard Spjut 
© 2020 Ron Vanderhoff |
|
Salix lasiolepis Arroyo willow
native
Tree, Shrub 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2020 Steve Matson |
|
Salsola tragus Prickly russian thistle, Russianthistle, Tumbleweed
• invasive non-native
Annual herb 
© 2017 Ron Vanderhoff 
© 2018 Angelique Herman 
© 2023 Cynthia Powell |
|
Salvia apiana White sage
native
Shrub 
© 2019 Hannah Garcia 
© 2019 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Salvia leucophylla San luis purple sage
native
Shrub 
© 2015 Steven M Norris 
© 2019 Janith Johnson 
© 2018 Ron Vanderhoff |
|
Sambucus mexicana Blue elderberry
native
Tree, Shrub 
© 2021 Mike Russler 
© 2020 Diane Etchison 
© 2022 El Byrne |
|
Schinus molle Peruvian pepper tree, Peruvian peppertree
• invasive non-native
Tree 
© 2021 stephen rosenthal 
© 2017 William McCarey 
© 2023 Ron Vanderhoff |
|
Silene gallica Common catchfly, Windmill pink
non-native
Annual herb 
© 2019 Mary Wloch 
© 2017 Gary McDonald 
© 2019 Gary McDonald |
|
Silene multinervia Fire following campion
non-native
Annual herb 
© 2015 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Silybum marianum Blessed milkthistle, Milk thistle
• invasive non-native
Annual, Perennial herb 
© 2020 Nancy Hamlett 
© 2019 Marisa Persaud 
© 2018 Angelique Herman |
|
Sisymbrium officinale Hedge mustard, Hedgemustard
non-native
Annual herb 
© 2021 Ann Garside 
© 2022 Julian Geoghegan 
© 2021 Ron Vanderhoff |
|
Sisymbrium orientale Indian hedge mustard, Oriental hedge mustard
non-native
Annual, Perennial herb 
© 2019 Diane Etchison 
© 2021 Paul Aigner 
© 2021 Ron Vanderhoff |
|
Solanum americanum American black nightshade, Common nightshade, Small flowered nightshade
native
Annual, Perennial herb 
© 2009 Steve Matson 
© 2009 Steve Matson 
© 2009 Steve Matson |
|
Solanum douglasii Douglas' nightshade, Greenspot nightshade
native
Perennial herb 
© 2006 Steve Matson 
© 2006 Steve Matson 
© 2006 Steve Matson |
|
Solanum xanti Chaparral nightshade, Nightshade, Purple nightshade
native
Perennial herb, Shrub 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Stephanomeria virgata Rod wirelettuce, Tall stephanomeria, Twiggy wreath plant
native
Annual herb 
© 2019 Steven M Norris 
© 2022 Helen Hancock 
© 2019 Steven M Norris |
|
Tauschia arguta Southern tauschia, Southern umbrellawort
native
Perennial herb 
© 2019 Matt Berger 
© 2020 Bryant Baker 
© 2019 Diane Etchison |
|
Toxicodendron diversilobum Poison oak, Poisonoak, Western Poison Oak
native
Vine, Shrub 
© 2020 Ron Vanderhoff 
© 2019 Randy Huey 
© 2021 Bryant Baker |
|
Trifolium willdenovii Tomcat clover
native
Annual herb 
© 2024 Steve Conger 
© 2024 Steve Conger 
© 2018 Stacie Wolny |
|
Typha latifolia Broadleaf cattail, Common cattail, Soft flag
native
Perennial herb (aquatic) 
© 2013 Steve Matson 
© 2013 Steve Matson 
© 2013 Steve Matson |
|
Umbellularia californica Bay laurel, California bay, California laurel, bay tree
native
Tree 
© 2023 Mary Ann Machi 
© 2016 Steve Matson 
© 2023 Mary Ann Machi |
|
Uropappus lindleyi Silver puffs, Uropappus
native
Annual herb 
© 2019 Zack Abbey 
© 2019 Ron Vanderhoff 
© 2016 Ron Vanderhoff |
|
Venegasia carpesioides Canyon sunflower
native
Perennial herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Washingtonia robusta Mexican fan palm
• invasive non-native
Tree 
© 2018 James Bailey 
© 2021 Ron Vanderhoff  © 2015 Zoya Akulova |
|
Xanthium strumarium Rough cockleburr
native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Yucca whipplei Chaparral yucca
native
Shrub 
© Geoff Burleigh 
© 2023 Jordan Collins 
© 2020 Julia Markey |
|
Zigadenus fremontii Fremont's star lily, Fremont's death camas
native
Perennial herb 
© 2024 Carissa Brands 
© 2024 Mary Conway 
© 2024 Lynn Overtree |