logo Calflora  Illustrated Plant List 
Santa Susana Pass State Historic Park
Los Angeles County

Richard Burg, Michael Bonk  / California State Parks  (2006-05-17)

Record Detail Nearby Surveys What Grows Here?
160 PLANTS
Aspidotis californica    California lace fern,  California lacefern
native
Fern

PTERIDACEAE

Aspidotis californica
© 2020 R.A. Chasey
Aspidotis californica
© 2018 Hunter Breck
Aspidotis californica
© 2020 John Schmidt

Dryopteris arguta    California wood fern,  Coastal wood fern,  Shield fern
native
Fern

DRYOPTERIDACEAE

Dryopteris arguta
© 2023 Julia Markey
Dryopteris arguta
© 2019 Rebecca Crowe
Dryopteris arguta
© 2018 James Gonsman

Eleocharis montevidensis    Montevideo spike rush,  Sand spikerush
native
Perennial grasslike herb

CYPERACEAE

Eleocharis montevidensis
© 2021 Ron Vanderhoff
Eleocharis montevidensis
© 2021 Ron Vanderhoff
Eleocharis montevidensis
© 2020 John Rawlings

Eremocarpus setigerus    Turkey-mullein
native
Annual herb

EUPHORBIACEAE

Eremocarpus setigerus
© 2011 Steve Matson
Eremocarpus setigerus
© 2011 Steve Matson
Eremocarpus setigerus
© 2014 Richard Chasey

Pellaea mucronata    Bird's foot fern,  Birdfoot cliffbrake,  Birdfoot fern
native
Fern

PTERIDACEAE

Pellaea mucronata
© 2012 Ron Vanderhoff
Pellaea mucronata
© 2022 Helen Hancock
Pellaea mucronata
© 2023 Julia Markey

Pentagramma triangularis    Gold back fern,  Goldenback fern
native
Fern

PTERIDACEAE

Pentagramma triangularis
© 2024 Steve Conger
Pentagramma triangularis
© 2022 Cynthia Powell
Pentagramma triangularis
© 2023 Julia Markey

Arctostaphylos glandulosa    Cushing manzanita
native
Shrub

ERICACEAE

Arctostaphylos glandulosa
© 2019 Susan McDougall
Arctostaphylos glandulosa
© 2016 Dana York
Arctostaphylos glandulosa
© 2016 Dana York

Lathyrus vestitus    Bolander's pea,  Common pacific pea,  Pacific peavine
native
Perennial herb

FABACEAE

Lathyrus vestitus
© 2018 Stacie Wolny
Lathyrus vestitus
© 2019 Ron Vanderhoff
Lathyrus vestitus
© 2019 Steve Conger

Sisymbrium orientale    Indian hedge mustard,  Oriental hedge mustard
non-native
Annual, Perennial herb

BRASSICACEAE

Sisymbrium orientale
© 2019 Diane Etchison
Sisymbrium orientale
© 2021 Paul Aigner
Sisymbrium orientale
© 2021 Ron Vanderhoff

Silene gallica    Common catchfly,  Windmill pink
non-native
Annual herb

CARYOPHYLLACEAE

Silene gallica
© 2019 Mary Wloch
Silene gallica
© 2017 Gary McDonald
Silene gallica
© 2019 Gary McDonald

Gnaphalium californicum    Ladies' tobacco
native
Annual, Perennial herb

ASTERACEAE

Gnaphalium californicum
© 2019 Gary McDonald
Gnaphalium californicum
© 2020 Steven M Norris
Gnaphalium californicum
© 2021 Ron Vanderhoff

Hirschfeldia incana    Mediterranean hoary mustard,  Short podded mustard,  Summer mustard
invasive non-native
Perennial herb

BRASSICACEAE

Hirschfeldia incana
© 2017 Gary McDonald
Hirschfeldia incana
© 2017 Gary McDonald
Hirschfeldia incana
© 2022 Ron Vanderhoff

Ricinus communis    Castor bean,  Castorbean
invasive non-native
Shrub

EUPHORBIACEAE

Ricinus communis
© 2017 Henry DiRocco
Ricinus communis
© 2020 Aaron Echols
Ricinus communis
© 2022 Ron Vanderhoff

Solanum douglasii    Douglas' nightshade,  Greenspot nightshade
native
Perennial herb

SOLANACEAE

Solanum douglasii
© 2006 Steve Matson
Solanum douglasii
© 2006 Steve Matson
Solanum douglasii
© 2006 Steve Matson

Melica imperfecta    California melic,  Coast range melic,  Small flowered melica
native
Perennial grass

POACEAE

Melica imperfecta
© 2020 Ron Vanderhoff
Melica imperfecta
© 2021 Ron Vanderhoff
Melica imperfecta
© 2020 Ron Vanderhoff

Populus fremontii    Fremont cottonwood
native
Tree

SALICACEAE

Populus fremontii
© 2018 Julie Kierstead Nelson
Populus fremontii
© 2019 Hailey Laskey
Populus fremontii
© 2021 Ron Vanderhoff

Quercus berberidifolia    Inland scrub oak
native
Tree

FAGACEAE

Quercus berberidifolia
© 2022 David Strauch
Quercus berberidifolia
© 2022 Ron Vanderhoff
Quercus berberidifolia
© 2022 David Strauch

Salix gooddingii    Goodding's black willow,  Goodding's willow,  Gooding's willow
native
Tree

SALICACEAE

Salix gooddingii
© 2020 Ron Vanderhoff
Salix gooddingii
© 2021 Richard Spjut
Salix gooddingii
© 2020 Ron Vanderhoff

Collinsia heterophylla    Purple chinese houses
native
Annual herb

PLANTAGINACEAE

Collinsia heterophylla
© 2022 Mary Ann Machi
Collinsia heterophylla
© 2019 David Greenberger
Collinsia heterophylla
© 2019 Ron Vanderhoff

Dichelostemma capitatum    Blue dicks
native
Perennial herb

THEMIDACEAE

Dichelostemma capitatum
© 2023 Steve Matson
Dichelostemma capitatum
© 2023 Steve Matson
Dichelostemma capitatum
© 2022 Steve Matson

Paeonia californica    California peony
native
Perennial herb

PAEONIACEAE

Paeonia californica
© 2024 Ron Vanderhoff
Paeonia californica
© 2023 Ron Vanderhoff
Paeonia californica
© 2019 Susan McDougall

Phacelia imbricata    Imbricate phacelia
native
Perennial herb

HYDROPHYLLACEAE

Phacelia imbricata
© 2019 Steve Matson
Phacelia imbricata
© 2019 Steve Matson
Phacelia imbricata
© 2019 Steve Matson

Quercus agrifolia    California live oak,  Coast live oak
native
Tree

FAGACEAE

Quercus agrifolia
© 2019 Patrick Furtado
Quercus agrifolia
© 2022 Andy Ford
Quercus agrifolia
© 2018 Marcyn Del Clements

Camissonia californica    California primrose
native
Annual herb

ONAGRACEAE

Camissonia californica
© 2019 Elexis Padron
Camissonia californica
© 2019 Ron Vanderhoff
Camissonia californica
© 2019 Elexis Padron

Claytonia perfoliata    Miners lettuce,  Miner's lettuce,  Rooreh (Ohlone)
native
Annual herb

MONTIACEAE

Claytonia perfoliata
© 2008 Steve Matson
Claytonia perfoliata
© 2019 Gary McDonald
Claytonia perfoliata
© 2020 Ron Vanderhoff

Crassula connata    Pigmy weed,  Sand pygmy weed,  Sand pygmyweed
native
Annual herb

CRASSULACEAE

Crassula connata
© 2020 Ron Vanderhoff
Crassula connata
© 2019 Ron Vanderhoff
Crassula connata
© 2019 Ron Vanderhoff

Lamarckia aurea    Goldentop grass
non-native
Annual grass

POACEAE

Lamarckia aurea
© 2017 B.J. Dion
Lamarckia aurea
© 2019 Ron Vanderhoff
Lamarckia aurea
© 2015 James Gonsman

Malosma laurina    Laurel sumac
native
Tree, Shrub

ANACARDIACEAE

Malosma laurina
© 2015 Steven M Norris
Malosma laurina
© 2018 susan Bashore
Malosma laurina
© 2024 Bonnie Nickel

Platanus racemosa    California sycamore,  Western sycamore
native
Tree

PLATANACEAE

Platanus racemosa
© 2021 Ron Vanderhoff
Platanus racemosa
© 2018 Ron Vanderhoff
Platanus racemosa
© 2019 Rachelle Gray

Rhus integrifolia    Lemonade berry,  Lemonade sumac
native
Shrub

ANACARDIACEAE

Rhus integrifolia
© 2024 Mike Russler
Rhus integrifolia
© 2019 Ron Vanderhoff
Rhus integrifolia
© 2024 Mike Russler

Salix lasiolepis    Arroyo willow
native
Tree, Shrub

SALICACEAE

Salix lasiolepis
© 2022 Ron Vanderhoff
Salix lasiolepis
© 2022 Ron Vanderhoff
Salix lasiolepis
© 2020 Steve Matson

Tauschia arguta    Southern tauschia,  Southern umbrellawort
native
Perennial herb

APIACEAE

Tauschia arguta
© 2019 Matt Berger
Tauschia arguta
© 2020 Bryant Baker
Tauschia arguta
© 2019 Diane Etchison

Venegasia carpesioides    Canyon sunflower
native
Perennial herb

ASTERACEAE

Venegasia carpesioides
© 2014 Steve Matson
Venegasia carpesioides
© 2014 Steve Matson
Venegasia carpesioides
© 2014 Steve Matson

Bromus rubens    Red brome
invasive non-native
Annual grass

POACEAE

Bromus rubens
© 2015 Chris Jaster
Bromus rubens
© 2015 jamie smith
Bromus rubens
© 2018 Gary McDonald

Emmenanthe penduliflora    Whispering bells,  Whisperingbells
native
Annual herb

HYDROPHYLLACEAE

Emmenanthe penduliflora
© 2022 Steve Matson
Emmenanthe penduliflora
© 2022 Steve Matson
Emmenanthe penduliflora
© 2022 Steve Matson

Encelia californica    Bush sunflower,  California brittlebush,  California encelia
native
Shrub

ASTERACEAE

Encelia californica
© 2017 Steve Matson
Encelia californica
© 2017 Steve Matson
Encelia californica
© 2017 Steve Matson

Erodium cicutarium    Coastal heron's bill,  Red stemmed filaree,  Redstem stork's bill
invasive non-native
Annual herb

GERANIACEAE

Erodium cicutarium
© 2022 Steve Matson
Erodium cicutarium
© 2008 Steve Matson
Erodium cicutarium
© 2022 Steve Matson

Lotus strigosus    Strigose lotus
native
Annual herb

FABACEAE

Lotus strigosus
© 2016 Steve Matson
Lotus strigosus
© 2009 Steve Matson
Lotus strigosus
© 2016 Steve Matson

Medicago polymorpha    Bur clover,  Bur medic,  California burclover
invasive non-native
Annual herb

FABACEAE

Medicago polymorpha
© 2019 Gary McDonald
Medicago polymorpha
© 2019 Gary McDonald
Medicago polymorpha
© 2019 Gary McDonald

Parietaria hespera    Pelitory,  Pellitory,  Rillita pellitory
native
Annual herb

URTICACEAE

Parietaria hespera
© 2022 Matt Berger
Parietaria hespera
© 2019 Ron Vanderhoff
Parietaria hespera
© 2021 Ron Vanderhoff

Parietaria hespera var. californica    California pellitory
native
Annual herb

URTICACEAE

Parietaria hespera var. californica
© 2003 Keir Morse
Parietaria hespera var. californica
© 2003 Keir Morse
Parietaria hespera var. californica
© 2003 Keir Morse

Calystegia macrostegia    Island false bindweed,  Island morning glory
native
Perennial herb, Vine

CONVOLVULACEAE

Calystegia macrostegia
© 2020 Steven M Norris
Calystegia macrostegia
© 2022 Ron Vanderhoff
Calystegia macrostegia
© 2018 Ron Vanderhoff

Carduus pycnocephalus    Italian thistle
invasive non-native
Annual herb

ASTERACEAE

Carduus pycnocephalus
© 2019 Gary McDonald
Carduus pycnocephalus
© 2023 Diana Wahl
Carduus pycnocephalus
© 2023 Ron Vanderhoff

Pterostegia drymarioides    Fairy mist,  Woodland threadstem
native
Annual herb

POLYGONACEAE

Pterostegia drymarioides
© 2016 Steve Matson
Pterostegia drymarioides
© 2016 Steve Matson
Pterostegia drymarioides
© 2005 Steve Matson

Solanum xanti    Chaparral nightshade,  Nightshade,  Purple nightshade
native
Perennial herb, Shrub

SOLANACEAE

Solanum xanti
© 2008 Steve Matson
Solanum xanti
© 2008 Steve Matson
Solanum xanti
© 2008 Steve Matson

Cuscuta californica    California dodder,  Chaparral dodder
native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta californica
© 2019 Ron Vanderhoff
Cuscuta californica
© 2018 David popp
Cuscuta californica
© 2019 stephen rosenthal

Eriophyllum confertiflorum    Golden yarrow,  Yellow yarrow
native
Shrub

ASTERACEAE

Eriophyllum confertiflorum
© 2019 Stacie Wolny
Eriophyllum confertiflorum
© 2022 Mojgan Mahdizadeh
Eriophyllum confertiflorum
© 2019 Marisa Persaud

Leptodactylon californicum    Prickly phlox
native
Shrub

POLEMONIACEAE

Leptodactylon californicum
© 2018 Ron Vanderhoff
Leptodactylon californicum
© 2020 Matt Berger
Leptodactylon californicum
© 2019 Diane Etchison

Carpobrotus edulis    Hottentot fig,  Iceplant,  Sea fig
invasive non-native
Perennial herb

AIZOACEAE

Carpobrotus edulis
© 2021 Michelle Karle
Carpobrotus edulis
© 2017 Lisa Miller
Carpobrotus edulis
© 2018 Michael Chasse

Datura wrightii    Jimsonweed,  Sacred thorn apple,  Toluaca
native
Perennial herb

SOLANACEAE

Datura wrightii
© 2019 Bonnie Nickel
Datura wrightii
© 2019 Ron Vanderhoff
Datura wrightii
© 2019 Bonnie Nickel

Lupinus sparsiflorus    Coulter's lupine,  Mohave lupine,  Mojave lupine
native
Annual herb

FABACEAE

Lupinus sparsiflorus
© 2022 Ron Vanderhoff
Lupinus sparsiflorus
© 2023 Ron Vanderhoff
Lupinus sparsiflorus
© 2023 Ron Vanderhoff

Antirrhinum kelloggii    Climbing snapdragon,  Kellogg's snapdragon,  Lax snapdragon
native
Annual herb

PLANTAGINACEAE

Antirrhinum kelloggii
© 2024 David Strauch
Antirrhinum kelloggii
© 2019 David Greenberger
Antirrhinum kelloggii
© 2019 Ron Vanderhoff

Ceanothus spinosus    Greenbark ceanothus,  Redheart
native
Tree, Shrub

RHAMNACEAE

Ceanothus spinosus
© 2018 Ron Vanderhoff
Ceanothus spinosus
© 2012 Ron Vanderhoff
Ceanothus spinosus
© 2019 Ron Vanderhoff

Cercocarpus betuloides    Birch leaf mountain mahogany,  Mountain mahogany
native
Tree, Shrub

ROSACEAE

Cercocarpus betuloides
© 2020 Rebecca Schoenenberger
Cercocarpus betuloides
© 2020 Aaron Echols
Cercocarpus betuloides
© 2016 Cindy Roessler

Gilia angelensis    Chaparral gilia
native
Annual herb

POLEMONIACEAE

Gilia angelensis
© 2023 Ron Vanderhoff
Gilia angelensis
© 2021 Ron Vanderhoff
Gilia angelensis
© 2021 Ron Vanderhoff

Lupinus hirsutissimus    Stinging annual lupine,  Stinging lupine
native
Annual herb

FABACEAE

Lupinus hirsutissimus
© 2024 Mike Russler
Lupinus hirsutissimus
© 2023 Neil Uelman
Lupinus hirsutissimus
© 2019 Ron Vanderhoff

Mimulus cardinalis    Cardinal monkey flower
native
Perennial herb

PHRYMACEAE

Mimulus cardinalis
© 2023 Steve Conger
Mimulus cardinalis
© 2014 James Gonsman
Mimulus cardinalis
© 2023 Mary Ann Machi

Phacelia cicutaria    Caterpillar phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia cicutaria
© 2019 Ron Vanderhoff
Phacelia cicutaria
© 2016 Julie Watson
Phacelia cicutaria
© 2020 Shane Hanofee

Sambucus mexicana    Blue elderberry
native
Tree, Shrub

VIBURNACEAE

Sambucus mexicana
© 2021 Mike Russler
Sambucus mexicana
© 2020 Diane Etchison
Sambucus mexicana
© 2022 El Byrne

Uropappus lindleyi    Silver puffs,  Uropappus
native
Annual herb

ASTERACEAE

Uropappus lindleyi
© 2019 Zack Abbey
Uropappus lindleyi
© 2019 Ron Vanderhoff
Uropappus lindleyi
© 2016 Ron Vanderhoff

Zigadenus fremontii    Fremont's star lily,  Fremont's death camas
native
Perennial herb

MELANTHIACEAE

Zigadenus fremontii
© 2024 Carissa Brands
Zigadenus fremontii
© 2024 Mary Conway
Zigadenus fremontii
© 2024 Lynn Overtree

Calochortus catalinae    Catalina mariposa lily
rare native
Perennial herb (bulb)

LILIACEAE

Calochortus catalinae
© 2017 Steve Matson
Calochortus catalinae
© 2023 Ron Vanderhoff
Calochortus catalinae
© 2023 Ron Vanderhoff

Eriodictyon crassifolium    Felt leaved yerba santa,  Thick leaved yerba santa,  Thickleaf yerba santa
native
Shrub

NAMACEAE

Eriodictyon crassifolium
© 2023 Julia Markey
Eriodictyon crassifolium
© 2020 Bonnie Nickel
Eriodictyon crassifolium
© 2021 Mary Herr

Eucrypta chrysanthemifolia    Common eucrypta,  Spotted eucrypta,  Spotted hideseed
native
Annual herb

HYDROPHYLLACEAE

Eucrypta chrysanthemifolia
© 2014 Steve Matson
Eucrypta chrysanthemifolia
© 2014 Steve Matson
Eucrypta chrysanthemifolia
© 2014 Steve Matson

Filago californica    California cottonrose
native
Annual herb

ASTERACEAE

Filago californica
© 2019 Steve Matson
Filago californica
© 2019 Steve Matson
Filago californica
© 2019 Steve Matson

Fraxinus dipetala    California ash,  Flowering ash,  Foothill ash
native
Tree, Shrub

OLEACEAE

Fraxinus dipetala
© 2023 Ron Vanderhoff
Fraxinus dipetala
© 2021 Bryant Baker
Fraxinus dipetala
© 2021 Bryant Baker

Helianthemum scoparium    Peak Rushrose
native
Shrub

CISTACEAE

Helianthemum scoparium
© 2018 Amy Rapport
Helianthemum scoparium
© 2023 Ron Vanderhoff
Helianthemum scoparium
© 2024 Mike Russler

Hypochaeris glabra    Smooth cat's ear
invasive non-native
Annual herb

ASTERACEAE

Hypochaeris glabra
© 2020 Ron Vanderhoff
Hypochaeris glabra
© 2017 Gary McDonald
Hypochaeris glabra
© 2019 Ron Vanderhoff

Juglans californica    Southern black walnut,  Southern california walnut,  Southern california black walnut
rare native
Tree

JUGLANDACEAE

Juglans californica
© 2014 Garth Wadsworth
Juglans californica
© 2022 Aaron Echols
Juglans californica
© 2022 Ron Vanderhoff

Lupinus bicolor    Annual lupine,  Bicolored lupine,  Miniature lupine
native
Annual, Perennial herb

FABACEAE

Lupinus bicolor
© 2024 Mary Ann Machi
Lupinus bicolor
© 2022 Mike Russler
Lupinus bicolor
© 2024 Mary Ann Machi

Phacelia distans    Common phacelia,  Distant phacelia,  Wild heliotrope
native
Annual herb

HYDROPHYLLACEAE

Phacelia distans
© 2014 Steve Matson
Phacelia distans
© 2014 Steve Matson
Phacelia distans
© 2022 Ron Vanderhoff

Schinus molle    Peruvian pepper tree,  Peruvian peppertree
invasive non-native
Tree

ANACARDIACEAE

Schinus molle
© 2021 stephen rosenthal
Schinus molle
© 2017 William McCarey
Schinus molle
© 2023 Ron Vanderhoff

Toxicodendron diversilobum    Poison oak,  Poisonoak,  Western Poison Oak
native
Vine, Shrub

ANACARDIACEAE

Toxicodendron diversilobum
© 2020 Ron Vanderhoff
Toxicodendron diversilobum
© 2019 Randy Huey
Toxicodendron diversilobum
© 2021 Bryant Baker

Galium angustifolium    Narrow leaved bedstraw,  Narrowleaf bedstraw
native
Perennial herb

RUBIACEAE

Galium angustifolium
© 2019 Bonnie Nickel
Galium angustifolium
© 2017 Diane Etchison
Galium angustifolium
© 2020 Ron Vanderhoff

Keckiella cordifolia    Climbing penstemon,  Heart leaved keckiella,  Heartleaf keckiella
native
Shrub

PLANTAGINACEAE

Keckiella cordifolia
© 2020 Ron Vanderhoff
Keckiella cordifolia
© 2022 Bryant Baker
Keckiella cordifolia
© 2022 Bryant Baker

Lotus scoparius    Deerweed
native
Perennial herb

FABACEAE

Lotus scoparius
© 2021 Ron Vanderhoff
Lotus scoparius
© 2019 Diane Etchison
Lotus scoparius
© 2020 Ron Vanderhoff

Mimulus aurantiacus    Orange Bush Monkeyflower
native
Shrub

PHRYMACEAE

Mimulus aurantiacus
© 2024 Steve Conger
Mimulus aurantiacus
© 2024 Steve Conger
Mimulus aurantiacus
© 2019 Gary McDonald

Anagallis arvensis    Scarlet pimpernel
non-native
Annual herb

MYRSINACEAE

Anagallis arvensis
© 2017 B.J. Dion
Anagallis arvensis
© 2022 Chris McDonald
Anagallis arvensis
© 2023 Ron Vanderhoff

Nicotiana glauca    Tree tobacco
invasive non-native
Tree, Shrub

SOLANACEAE

Nicotiana glauca
© 2019 Jean B Henney
Nicotiana glauca
© 2017 Steve Matson
Nicotiana glauca
© 2017 Steve Matson

Piptatherum miliaceum    Smilo grass
invasive non-native
Perennial grass

POACEAE

Piptatherum miliaceum
© 2022 Donald Burk
Piptatherum miliaceum
© 2022 Ron Vanderhoff
Piptatherum miliaceum
© 2022 Donald Burk

Malva parviflora    Cheeseweed mallow
non-native
Annual herb

MALVACEAE

Malva parviflora
© 2022 Mike Russler
Malva parviflora
© 2022 Donald Burk
Malva parviflora
© 2022 Mike Russler

Solanum americanum    American black nightshade,  Common nightshade,  Small flowered nightshade
native
Annual, Perennial herb

SOLANACEAE

Solanum americanum
© 2023 Ron Vanderhoff
Solanum americanum
© 2019 Gary McDonald
Solanum americanum
© 2021 David Wolfson

Avena fatua    Wild oat,  Wildoat
invasive non-native
Annual grass

POACEAE

Avena fatua
© 2018 Gary McDonald
Avena fatua
© 2023 Ron Vanderhoff
Avena fatua
© 2023 Matt Berger

Rhus ovata    Sugar bush,  Sugar sumac
native
Shrub

ANACARDIACEAE

Rhus ovata
© 2020 Bryant Baker
Rhus ovata
© 2020 Bryant Baker
Rhus ovata
© 2019 Bryant Baker

Trifolium willdenovii    Tomcat clover
native
Annual herb

FABACEAE

Trifolium willdenovii
© 2024 Steve Conger
Trifolium willdenovii
© 2024 Steve Conger
Trifolium willdenovii
© 2018 Stacie Wolny

Achnatherum coronatum    Crested needle grass
native
Perennial grass

POACEAE

Achnatherum coronatum
© 2024 Ron Vanderhoff
Achnatherum coronatum
© 2024 Alisa Flint
Achnatherum coronatum
© 2019 Rachelle Gray

Allophyllum divaricatum    Purple false gilia,  Purple false gilyflower,  Straggling gilia
native
Annual herb

POLEMONIACEAE

Allophyllum divaricatum
© 2015 Ron Vanderhoff
Allophyllum divaricatum
© 2019 David Greenberger
Allophyllum divaricatum
© 2022 BOB CASE

Antirrhinum coulterianum    Coulter snapdragon,  Coulter's snapdragon
native
Annual herb

PLANTAGINACEAE

Antirrhinum coulterianum
© 2019 Lynn Sweet
Antirrhinum coulterianum
© 2019 Aaron Echols
Antirrhinum coulterianum
© 2019 Hailey Laskey

Bromus diandrus    Bromegrass,  Ripgut brome,  Ripgut grass
invasive non-native
Annual grass

POACEAE

Bromus diandrus
© Alize
Bromus diandrus
© 2021 Richard Spjut
Bromus diandrus
© 2024 David popp

Chaenactis artemisiifolia    Artemisia leaved chaenactis,  White pincushion
native
Annual herb

ASTERACEAE

Chaenactis artemisiifolia
© 2022 Rosalind Helfand
Chaenactis artemisiifolia
© 2023 Julia Markey
Chaenactis artemisiifolia
© 2022 Ron Vanderhoff

Cistus creticus    Hairy rockrose
non-native
Shrub

CISTACEAE

Cistus creticus
© 2020 Karen Swift
Cistus creticus
© 2023 Ron Vanderhoff
Cistus creticus
© 2018 Julian Geoghegan

Daucus pusillus    American wild carrot,  Rattlesnake weed
native
Annual herb

APIACEAE

Daucus pusillus
© 2019 Diane Etchison
Daucus pusillus
© 2022 David Wolfson
Daucus pusillus
© 2021 Ken Lunders

Delphinium parryi    San bernardino larkspur
native
Perennial herb

RANUNCULACEAE

Delphinium parryi
© 2019 Diane Etchison
Delphinium parryi
© Geoff Burleigh
Delphinium parryi
© 2019 Diane Etchison

Filago gallica    Narrowleaf cottonrose
non-native
Annual herb

ASTERACEAE

Filago gallica
© 2017 Barbara Boethling
Filago gallica
© 2023 Ron Vanderhoff
Filago gallica
© 2023 Ron Vanderhoff

Lotus argophyllus    Silver birds foot trefoil
native
Perennial herb

FABACEAE

Lotus argophyllus
© 2014 Steve Matson
Lotus argophyllus
© 2014 Steve Matson
Lotus argophyllus
© 2016 Steve Matson

Silene multinervia    Fire following campion
non-native
Annual herb

CARYOPHYLLACEAE

Silene multinervia
© 2015 Ron Vanderhoff
Silene multinervia
© 2019 Ron Vanderhoff
Silene multinervia
© 2019 Ron Vanderhoff

Washingtonia robusta    Mexican fan palm
invasive non-native
Tree

ARECACEAE

Washingtonia robusta
© 2018 James Bailey
Washingtonia robusta
© 2021 Ron Vanderhoff
Washingtonia robusta
© 2015 Zoya Akulova

Yucca whipplei    Chaparral yucca
native
Shrub

AGAVACEAE

Yucca whipplei
© Geoff Burleigh
Yucca whipplei
© 2023 Jordan Collins
Yucca whipplei
© 2020 Julia Markey

Amorpha californica    California false indigo,  False indigo,  Mock locust
native
Shrub

FABACEAE

Amorpha californica
© 2019 Ron Vanderhoff
Amorpha californica
© 2022 Suzanne L. Weakley
Amorpha californica
© 2018 Jennifer Poore

Brassica nigra    Black mustard
invasive non-native
Annual herb

BRASSICACEAE

Brassica nigra
© 2021 Ron Vanderhoff
Brassica nigra
© 2019 Ron Vanderhoff
Brassica nigra
© 2019 Ron Vanderhoff

Chorizanthe staticoides    Turkish rugging
native
Annual herb

POLYGONACEAE

Chorizanthe staticoides
© 2019 Ron Vanderhoff
Chorizanthe staticoides
© 2019 Bryant Baker
Chorizanthe staticoides
© 2019 Ron Vanderhoff

Clarkia purpurea    Purple clarkia,  Winecup clarkia
native
Annual herb

ONAGRACEAE

Clarkia purpurea
© 2022 Ron Vanderhoff
Clarkia purpurea
© 2019 Stacie Wolny
Clarkia purpurea
© 2021 Mary Conway

Delphinium cardinale    Scarlet larkspur
native
Perennial herb

RANUNCULACEAE

Delphinium cardinale
© Geoff Burleigh
Delphinium cardinale
© 2021 Colin Barrows
Delphinium cardinale
© 2018 Mike Libby

Lotus purshianus    American bird's foot trefoil,  Spanish lotus
native
Annual herb

FABACEAE

Lotus purshianus
© 2019 Rachelle Gray
Lotus purshianus
© 2013 Arcangelo Wessells
Lotus purshianus
© 2017 David Wolfson

Malacothamnus fasciculatus    Chaparral bushmallow,  Southern coastal bushmallow
native
Shrub

MALVACEAE

Malacothamnus fasciculatus
© 2020 Aaron Echols
Malacothamnus fasciculatus
© 2020 Ron Vanderhoff
Malacothamnus fasciculatus
© 2018 Ron Vanderhoff

Malacothrix clevelandii    Cleveland's dandelion,  Cleveland's desertdandelion,  Cleveland's malacothrix
native
Annual herb

ASTERACEAE

Malacothrix clevelandii
© 2021 Steve Laymon
Malacothrix clevelandii
© 2022 Mike Russler
Malacothrix clevelandii
© 2023 R.A. Chasey

Rafinesquia californica    California chicory,  California plumseed
native
Annual herb

ASTERACEAE

Rafinesquia californica
© 2023 Robert Steers
Rafinesquia californica
© 2021 Ron Vanderhoff
Rafinesquia californica
© 2017 Steve Matson

Salvia apiana    White sage
native
Shrub

LAMIACEAE

Salvia apiana
© 2019 Hannah Garcia
Salvia apiana
© 2019 Ron Vanderhoff
Salvia apiana
© 2020 Ron Vanderhoff

Salvia leucophylla    San luis purple sage
native
Shrub

LAMIACEAE

Salvia leucophylla
© 2015 Steven M Norris
Salvia leucophylla
© 2019 Janith Johnson
Salvia leucophylla
© 2018 Ron Vanderhoff

Silybum marianum    Blessed milkthistle,  Milk thistle
invasive non-native
Annual, Perennial herb

ASTERACEAE

Silybum marianum
© 2020 Nancy Hamlett
Silybum marianum
© 2019 Marisa Persaud
Silybum marianum
© 2018 Angelique Herman

Sisymbrium officinale    Hedge mustard,  Hedgemustard
non-native
Annual herb

BRASSICACEAE

Sisymbrium officinale
© 2021 Ann Garside
Sisymbrium officinale
© 2022 Julian Geoghegan
Sisymbrium officinale
© 2021 Ron Vanderhoff

Achillea millefolium    Common yarrow
native
Perennial herb

ASTERACEAE

Achillea millefolium
© 2022 Andy Ford
Achillea millefolium
© 2020 Bob Sweatt
Achillea millefolium
© 2018 Gary McDonald

Bromus carinatus    California brome
native
Perennial grass

POACEAE

Bromus carinatus
© 2020 Ron Vanderhoff
Bromus carinatus
© 2022 David popp
Bromus carinatus
© 2014 Vertin Alvarez

Centaurea melitensis    Maltese star thistle,  Napa star thistle,  Tocalote
invasive non-native
Annual herb

ASTERACEAE

Centaurea melitensis
© 2019 Ron Vanderhoff
Centaurea melitensis
© 2020 Ron Vanderhoff
Centaurea melitensis
© 2020 Laura Anna Arellano

Conium maculatum    Poison hemlock
invasive non-native
Perennial herb

APIACEAE

Conium maculatum
© 2024 Cynthia Powell
Conium maculatum
© 2013 Toni Corelli
Conium maculatum
© 2016 Cynthia Powell

Eriogonum fasciculatum    California buckwheat,  Eastern mojave buckwheat
native
Shrub

POLYGONACEAE

Eriogonum fasciculatum
© 2021 Phyllis Fitzsimons
Eriogonum fasciculatum
© 2019 Ron Vanderhoff
Eriogonum fasciculatum
© 2017 Ron Vanderhoff

Artemisia californica    California sagebrush,  Coast sagebrush,  Coastal sage brush
native
Shrub

ASTERACEAE

Artemisia californica
© 2018 James Gonsman
Artemisia californica
© 2019 Aaron Echols
Artemisia californica
© 2018 Ron Vanderhoff

Melilotus indicus    Annual yellow sweetclover,  Sourclover
non-native
Annual herb

FABACEAE

Melilotus indicus
© 2019 Randy Huey
Melilotus indicus
© 2019 Randy Huey
Melilotus indicus
© 2017 Rosalie Benitez

Isocoma menziesii    Menzies' goldenbush
native
Shrub

ASTERACEAE

Isocoma menziesii
© 2014 Steve Matson
Isocoma menziesii
© 2006 Steve Matson
Isocoma menziesii
© 2014 Steve Matson

Typha latifolia    Broadleaf cattail,  Common cattail,  Soft flag
native
Perennial herb (aquatic)

TYPHACEAE

Typha latifolia
© 2013 Steve Matson
Typha latifolia
© 2013 Steve Matson
Typha latifolia
© 2013 Steve Matson

Calochortus clavatus    Club haired mariposa,  Clubhair mariposa lily
native
Perennial herb

LILIACEAE

Calochortus clavatus
© 2019 Bryant Baker
Calochortus clavatus
© 2019 Cynthia Griffin
Calochortus clavatus
© 2020 David Wolfson

Calochortus plummerae    Plummer's mariposa lily
rare native
Perennial herb (bulb)

LILIACEAE

Calochortus plummerae
© 2020 Emily Sluiman
Calochortus plummerae
© 2022 Ron Vanderhoff
Calochortus plummerae
© 2018 David Greenberger

Cirsium occidentale    Cobweb thistle,  Western thistle
native
Perennial herb

ASTERACEAE

Cirsium occidentale
© 2011 Steve Matson
Cirsium occidentale
© 2011 Steve Matson
Cirsium occidentale
© 2011 Steve Matson

Dudleya lanceolata    Lanceleaf liveforever,  Southern california dudleya
native
Perennial herb

CRASSULACEAE

Dudleya lanceolata
© 2019 Ron Vanderhoff
Dudleya lanceolata
© 2020 Steven M Norris
Dudleya lanceolata
© 2020 Steven M Norris

Penstemon heterophyllus    Bunchleaf penstemon,  Foothill penstemon
native
Perennial herb

PLANTAGINACEAE

Penstemon heterophyllus
© 2023 Ron Vanderhoff
Penstemon heterophyllus
© 2021 Charles Russell
Penstemon heterophyllus
© 2020 Diane Etchison

Chlorogalum pomeridianum    Amole,  Soap plant,  Soaproot
native
Perennial herb

AGAVACEAE

Chlorogalum pomeridianum
© 2019 Patrick Furtado
Chlorogalum pomeridianum
© 2020 Robert Katz
Chlorogalum pomeridianum
© 2019 Diane Etchison

Leymus condensatus    Giant wild rye
native
Perennial grass

POACEAE

Leymus condensatus
© 2020 Ron Vanderhoff
Leymus condensatus
© 2024 Mel Letterman
Leymus condensatus
© 2020 Diane Etchison

Lonicera subspicata    Southern honeysuckle
native
Shrub

CAPRIFOLIACEAE

Lonicera subspicata
© 2022 David Strauch
Lonicera subspicata
© 2017 Diane Etchison
Lonicera subspicata
© 2018 David Greenberger

Marrubium vulgare    White horehound
invasive non-native
Perennial herb

LAMIACEAE

Marrubium vulgare
© ©2013 Gary McDonald
Marrubium vulgare
© 2015 Diane Etchison
Marrubium vulgare
© 2018 Nancy Hamlett

Phacelia ramosissima    Branching phacelia
native
Perennial herb

HYDROPHYLLACEAE

Phacelia ramosissima
© 2005 Steve Matson
Phacelia ramosissima
© 2022 Rosalind Helfand
Phacelia ramosissima
© 2020 Ron Vanderhoff

Cyperus eragrostis    Tall cyperus,  Tall flatsedge
native
Perennial grasslike herb

CYPERACEAE

Cyperus eragrostis
© 2016 Joan Hampton
Cyperus eragrostis
© 2021 Ken Lunders
Cyperus eragrostis
© 2014 James Gonsman

Foeniculum vulgare    Biscuit root,  Sweet fennel
invasive non-native
Perennial herb

APIACEAE

Foeniculum vulgare
© 2019 Nicole Leatherman
Foeniculum vulgare
© 2019 Ron Vanderhoff
Foeniculum vulgare
© 2018 Henry DiRocco

Helianthus gracilentus    Slender sunflower
native
Perennial herb

ASTERACEAE

Helianthus gracilentus
© 2021 Ron Vanderhoff
Helianthus gracilentus
© 2021 Mike Russler
Helianthus gracilentus
© 2021 Diane Etchison

Gnaphalium stramineum    Cottonbatting plant
native
Perennial herb

ASTERACEAE

Gnaphalium stramineum
© 2017 Gary McDonald
Gnaphalium stramineum
© 2017 Gary McDonald
Gnaphalium stramineum
© 2017 Gary McDonald

Hemizonia fasciculata    Clustered tarweed
native
Annual herb

ASTERACEAE

Hemizonia fasciculata
© 2017 Steve Matson
Hemizonia fasciculata
© 2017 Steve Matson
Hemizonia fasciculata
© 2017 Steve Matson

Acourtia microcephala    Sacapellote
native
Perennial herb

ASTERACEAE

Acourtia microcephala
© 2022 Diane Etchison
Acourtia microcephala
© 2019 Ron Vanderhoff
Acourtia microcephala
© 2021 Aaron Echols

native
Tree, Shrub

ROSACEAE

Adenostoma fasciculatum
© 2019 Steve Matson
Adenostoma fasciculatum
© 2019 Steve Matson
Adenostoma fasciculatum
© 2019 Steve Matson

Heteromeles arbutifolia    Christmas berry,  Toyon
native
Shrub

ROSACEAE

Heteromeles arbutifolia
© 2015 James Gonsman
Heteromeles arbutifolia
© 2017 Gary McDonald
Heteromeles arbutifolia
© 2017 Gary McDonald

Rhamnus californica    California coffeeberry
native
Shrub

RHAMNACEAE

Rhamnus californica
© 2015 Steve Matson
Rhamnus californica
© 2016 Steve Matson
Rhamnus californica
© 2015 Steve Matson

Asclepias fascicularis    Narrow leaf milkweed
native
Perennial herb

APOCYNACEAE

Asclepias fascicularis
© 2010 Steve Matson
Asclepias fascicularis
© 2010 Steve Matson
Asclepias fascicularis
© 2014 Steve Matson

Clarkia unguiculata    Elegant clarkia,  Mountain garland,  Woodland clarkia
native
Annual herb

ONAGRACEAE

Clarkia unguiculata
© 2019 David Greenberger
Clarkia unguiculata
© 2019 Bryant Baker
Clarkia unguiculata
© 2021 Mike Russler

Conyza canadensis    Canada horseweed
native
Annual herb

ASTERACEAE

Conyza canadensis
© 2017 Gary McDonald
Conyza canadensis
© 2017 Gary McDonald
Conyza canadensis
© 2022 Mike Russler

Gnaphalium canescens    Wright's cudweed
native
Perennial herb

ASTERACEAE

Gnaphalium canescens
© 2005 Laura Ann Eliassen
Gnaphalium canescens
© 2005 Keir Morse
Gnaphalium canescens
© 2010 Gary A. Monroe

Helianthus annuus    Common sunflower,  Hairy leaved sunflower,  Sunflower
native
Annual herb

ASTERACEAE

Helianthus annuus
© 2021 Mike Russler
Helianthus annuus
© 2019 Bob Case
Helianthus annuus
© 2024 Mel Letterman

Lessingia filaginifolia    Common sandaster
native
Perennial herb

ASTERACEAE

Lessingia filaginifolia
© 2022 Mike Russler
Lessingia filaginifolia
© 2018 Ron Vanderhoff
Lessingia filaginifolia
© 2019 Diane Etchison

Malacothrix saxatilis    Cliff aster,  Cliff desertdandelion
native
Perennial herb

ASTERACEAE

Malacothrix saxatilis
© 2019 Marisa Persaud
Malacothrix saxatilis
© 2023 Ron Vanderhoff
Malacothrix saxatilis
© 2019 Adonis Tate

Cryptantha micromeres    Minute flowered cryptantha,  Pygmyflower cryptantha,  Small flowered cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha micromeres
© 2021 Jodi McGraw
Cryptantha micromeres
© 2020 Ken Hickman
Cryptantha micromeres
© 2019 John Rawlings

Salsola tragus    Prickly russian thistle,  Russianthistle,  Tumbleweed
invasive non-native
Annual herb

CHENOPODIACEAE

Salsola tragus
© 2017 Ron Vanderhoff
Salsola tragus
© 2018 Angelique Herman
Salsola tragus
© 2023 Cynthia Powell

Stephanomeria virgata    Rod wirelettuce,  Tall stephanomeria,  Twiggy wreath plant
native
Annual herb

ASTERACEAE

Stephanomeria virgata
© 2019 Steven M Norris
Stephanomeria virgata
© 2022 Helen Hancock
Stephanomeria virgata
© 2019 Steven M Norris

Xanthium strumarium    Rough cockleburr
native
Annual herb

ASTERACEAE

Xanthium strumarium
© 2011 Steve Matson
Xanthium strumarium
© 2011 Steve Matson
Xanthium strumarium
© 2011 Steve Matson

Ambrosia psilostachya    Ragweed,  Western ragweed
native
Perennial herb

ASTERACEAE

Ambrosia psilostachya
© 2021 Mary Ann Machi
Ambrosia psilostachya
© 2022 Ron Vanderhoff
Ambrosia psilostachya
© 2022 Ron Vanderhoff

Hemizonia minthornii    Santa susana tarplant
rare native
Shrub

ASTERACEAE

Hemizonia minthornii
© 2022 Suzanne L. Weakley
Hemizonia minthornii
© 2007 Hartmut Wisch
Hemizonia minthornii
© Geoff Burleigh

Epilobium canum    California fuchsia,  Hummingbird trumpet,  zauschneria
native
Perennial herb

ONAGRACEAE

Epilobium canum
© 2018 Ron Vanderhoff
Epilobium canum
© 2015 Gerald Carr
Epilobium canum
© 2015 Gerald Carr

Brickellia californica    Brickell bush,  California brickellbush,  California brickellia
native
Perennial herb

ASTERACEAE

Brickellia californica
© 2020 Diane Etchison
Brickellia californica
© 2018 Diane Etchison
Brickellia californica
© 2022 Ron Vanderhoff

Eriogonum elongatum    Longstem buckwheat
native
Perennial herb

POLYGONACEAE

Eriogonum elongatum
© 2022 David Strauch
Eriogonum elongatum
© 2017 Ron Vanderhoff
Eriogonum elongatum
© 2014 Julia King

Baccharis pilularis    Coyote brush,  Dwarf chaparral broom
native
Shrub

ASTERACEAE

Baccharis pilularis
© 2022 Ryan O'Dell
Baccharis pilularis
© 2021 Ron Vanderhoff: Staminate and pistillate plants in flower.
Baccharis pilularis
© 2018 Cynthia Powell

Alnus rhombifolia    White alder
native
Tree

BETULACEAE

Alnus rhombifolia
© 2005 BOB CASE
Alnus rhombifolia
© 2014 Garth Wadsworth
Alnus rhombifolia
© 2023 Ron Vanderhoff

Umbellularia californica    Bay laurel,  California bay,  California laurel, bay tree
native
Tree

LAURACEAE

Umbellularia californica
© 2023 Mary Ann Machi
Umbellularia californica
© 2016 Steve Matson
Umbellularia californica
© 2023 Mary Ann Machi

Ribes malvaceum    Chaparral currant
native
Shrub

GROSSULARIACEAE

Ribes malvaceum
© 2020 Bryant Baker
Ribes malvaceum
© 2020 Bryant Baker
Ribes malvaceum
© 2020 Bryant Baker

Mirabilis californica    California four o'clock
native
Perennial herb

NYCTAGINACEAE

Mirabilis californica
© 2014 Steve Matson
Mirabilis californica
© 2014 Steve Matson
Mirabilis californica
© 2014 Steve Matson