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

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
2021 Ron Vanderhoff
Pentagramma triangularis
2021 Mike Russler
Pentagramma triangularis
2024 Steve Conger

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
2023 Cynthia Powell
Populus fremontii
2019 Hailey Laskey

Quercus berberidifolia    Inland scrub oak
native
Tree

FAGACEAE

Quercus berberidifolia
2022 David Strauch
Quercus berberidifolia
2020 Cynthia Keiser
Quercus berberidifolia
2020 Cynthia Keiser

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
2023 Ron Vanderhoff

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
2020 David Greenberger
Rhus integrifolia
2019 Ron Vanderhoff
Rhus integrifolia
2024 Ron Vanderhoff

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
2020 Aaron Echols
Encelia californica
2021 Mary Wloch
Encelia californica
2020 Diane Etchison

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
2017 Gary McDonald

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 Cynthia Powell

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

SOLANACEAE

Datura wrightii
2017 Lisa Miller
Datura wrightii
2019 Ron Vanderhoff
Datura wrightii
2020 Mike McNamara

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
2014 James Gonsman
Mimulus cardinalis
2023 Steve Conger
Mimulus cardinalis
2021 Mike Russler

Phacelia cicutaria    Caterpillar phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia cicutaria
2019 Ron Vanderhoff
Phacelia cicutaria
2016 Julie Watson
Phacelia cicutaria
2014 Diane Etchison

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
2020 Bryant Baker
Zigadenus fremontii
2021 Steve Matson
Zigadenus fremontii
2020 Karen Swift

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
2022 R.A. Chasey

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
2021 Ken Lunders
Lupinus bicolor
2022 Mike Russler
Lupinus bicolor
2019 Gary McDonald

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
2023 Bill Kress
Mimulus aurantiacus
2019 Stacie Wolny
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
2009 Keir Morse
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
2014 Steve Matson
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 Ron Vanderhoff

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
2019 Ron Vanderhoff
Trifolium willdenovii
2019 Ron Vanderhoff
Trifolium willdenovii
2018 Stacie Wolny

Achnatherum coronatum    Crested needle grass
native
Perennial grass

POACEAE

Achnatherum coronatum
2020 Ron Vanderhoff
Achnatherum coronatum
2022 Ron Vanderhoff
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
2022 Ron Vanderhoff
Bromus diandrus
2021 Richard Spjut
Bromus diandrus
2022 Ron Vanderhoff

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
2020 Bob Sweatt

Malacothamnus fasciculatus    Chaparral bushmallow,  Southern coastal bushmallow
native
Shrub

MALVACEAE

Malacothamnus fasciculatus
2020 Aaron Echols
Malacothamnus fasciculatus
2020 Ron Vanderhoff
Malacothamnus fasciculatus
2017 David Magney

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
2019 David Greenberger
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
2019 James Bailey
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
2019 John L. Thompson
Calochortus plummerae
2022 Ron Vanderhoff

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
2016 Michael Mitchell
Penstemon heterophyllus
2021 Charles Russell
Penstemon heterophyllus
2020 Alexander Darnielle

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
2022 John Rawlings
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
2022 David Strauch
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

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

ASTERACEAE

Helianthus annuus
2019 Bob Case
Helianthus annuus
2019 Bob Case
Helianthus annuus
2021 Mike Russler

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
2019 Talila Golan
Rhamnus californica
2018 Mary Conway
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

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