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logo Calflora  Illustrated Plant List 
Sugarloaf Ridge SP
Sonoma County

Bowcutt, 1999  / California State Parks  (1999-01-01)

Record Detail Nearby Surveys What Grows Here?
397 PLANTS
Acer macrophyllum    Big leaf maple,  Bigleaf maple
native
Tree

SAPINDACEAE

Acer macrophyllum
© 2020 Diane Etchison
Acer macrophyllum
© 2024 Mary Ann Machi
Acer macrophyllum
© 2018 Steve Matson

Achillea millefolium    Common yarrow
native
Perennial herb

ASTERACEAE

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

Adenocaulon bicolor    American trailplant,  Trail plant
native
Perennial herb

ASTERACEAE

Adenocaulon bicolor
© 2018 MCOSD EDRR
Adenocaulon bicolor
© 2020 Cynthia Powell
Adenocaulon bicolor
© 2020 Bob Sweatt

native
Tree, Shrub

ROSACEAE

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

Adiantum jordanii    Adiantum,  maiden hair fern
native
Fern

PTERIDACEAE

Adiantum jordanii
© 2022 BOB CASE
Adiantum jordanii
© 2019 Ron Vanderhoff
Adiantum jordanii
© 2023 Mike Russler

Aesculus californica    Buckeye,  California buckeye,  California horse chestnut
native
Tree

SAPINDACEAE

Aesculus californica
© 2011 Steve Matson
Aesculus californica
© 2011 Steve Matson
Aesculus californica
© 2018 Dean Kelch

Agoseris apargioides var. apargioides    Coast dandelion,  Seaside agoseris,  Seaside dandelion
native
Perennial herb

ASTERACEAE

Agoseris apargioides var. apargioides
© 2011 Thomas Reyes
Agoseris apargioides var. apargioides
© 2011 Thomas Reyes
Agoseris apargioides var. apargioides
© 2011 Thomas Reyes

Agoseris grandiflora    Bigflower agoseris,  California dandelion,  Giant mountain dandelion
native
Perennial herb

ASTERACEAE

Agoseris grandiflora
© 2014 Steve Matson
Agoseris grandiflora
© 2014 Steve Matson
Agoseris grandiflora
© 2014 Steve Matson

Agoseris heterophylla    Annual agoseris,  Annual mountain dandelion
native
Annual herb

ASTERACEAE

Agoseris heterophylla
© 2003 Steve Matson
Agoseris heterophylla
© 2021 Lisa Berry
Agoseris heterophylla
© 2020 Bob Sweatt

Agoseris retrorsa    Spear leaved agoseris,  Spearleaf agoseris,  Spearleaf mountain dandelion
native
Perennial herb

ASTERACEAE

Agoseris retrorsa
© 2018 Steve Matson
Agoseris retrorsa
© 2018 Steve Matson
Agoseris retrorsa
© 2018 Steve Matson

Agrostis pallens    Leafy bent grass,  Diego bent grass,  Seashore bentgrass
native
Perennial grass

POACEAE

Agrostis pallens
© 2021 John Rawlings
Agrostis pallens
© 2020 Susan McDougall
Agrostis pallens
© 2021 John Rawlings

Aira caryophyllea    Shiver grass,  Silver hairgrass,  Silvery hairgrass
invasive non-native
Annual grass

POACEAE

Aira caryophyllea
© 2005 Steve Matson
Aira caryophyllea
© 2005 Steve Matson
Aira caryophyllea
© 2005 Steve Matson

Alnus rhombifolia    White alder
native
Tree

BETULACEAE

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

Amsinckia menziesii var. intermedia    Common fiddleneck
native
Annual herb

BORAGINACEAE

Amsinckia menziesii var. intermedia
© 2020 Matt Berger
Amsinckia menziesii var. intermedia
© 2019 Ron Vanderhoff
Amsinckia menziesii var. intermedia
© 2021 David popp

Anagallis arvensis    Scarlet pimpernel
non-native
Annual herb

MYRSINACEAE

Anagallis arvensis
© 2017 B.J. Dion
Anagallis arvensis
© 2018 Stacie Wolny
Anagallis arvensis
© 2017 B.J. Dion

Anaphalis margaritacea    Pearly everlasting
native
Perennial herb

ASTERACEAE

Anaphalis margaritacea
© 2020 Bob Sweatt
Anaphalis margaritacea
© 2021 Ken Lunders
Anaphalis margaritacea
© 2014 James Gonsman

Angelica tomentosa    Woolly angelica
native
Perennial herb

APIACEAE

Angelica tomentosa
© 2022 Donald Burk
Angelica tomentosa
© 2022 Donald Burk
Angelica tomentosa
© 2017 MCOSD EDRR

Anthemis cotula    Dog fennel,  Mayweed, dog fennel,  Stinking chamomile
invasive non-native
Annual herb

ASTERACEAE

Anthemis cotula
© 2017 Diane Etchison
Anthemis cotula
© 2019 Nathan Taxel
Anthemis cotula
© 2019 Dave Beller

Anthriscus caucalis    Bur chervil
non-native
Annual herb, Vine

APIACEAE

Anthriscus caucalis
© 2021 Aaron Echols
Anthriscus caucalis
© 2024 Ron Vanderhoff
Anthriscus caucalis
© 2020 Jennifer Mo

Antirrhinum virga    Tall snapdragon
rare native
Perennial herb

PLANTAGINACEAE

Antirrhinum virga
© 2024 R.A. Chasey
Antirrhinum virga
© 2024 Karen Sullivan
Antirrhinum virga
© 2022 Greg Kareofelas

Aphanes occidentalis    Western lady's mantle
native
Annual, Perennial herb

ROSACEAE

Aphanes occidentalis
© 2024 Mike Russler
Aphanes occidentalis
© 2025 Ron Vanderhoff
Aphanes occidentalis
© 2024 Mike Russler

Apiastrum angustifolium    Mock parsley,  Wild celery,  Wild parsley
native
Annual herb

APIACEAE

Apiastrum angustifolium
© 2020 Ron Vanderhoff
Apiastrum angustifolium
© 2020 Ron Vanderhoff
Apiastrum angustifolium
© 2023 Ron Vanderhoff

Aquilegia formosa    Crimson columbine,  Sitka columbine,  Western columbine
native
Perennial herb

RANUNCULACEAE

Aquilegia formosa
© 2022 Charles Russell
Aquilegia formosa
© 2022 David Strauch
Aquilegia formosa
© 2009 Julie A. Kierstead

Aralia californica    California spikenard,  Elk's clover,  Elkclover
native
Perennial herb

ARALIACEAE

Aralia californica
© 2022 Julie A. Kierstead
Aralia californica
© 2020 Tri Do
Aralia californica
© 2014 James Gonsman

Arbutus menziesii    Madrono,  Pacific madrone,  Madrone
native
Tree

ERICACEAE

Arbutus menziesii
© 2021 Cynthia Powell
Arbutus menziesii
© 2017 Gary McDonald
Arbutus menziesii
© 2021 Hunter Breck

native
Shrub

ERICACEAE

Arctostaphylos canescens ssp. canescens
© 2024 David Greenberger
Arctostaphylos canescens ssp. canescens
© 2024 Morgan Stickrod
Arctostaphylos canescens ssp. canescens
© 2022 R.A. Chasey

native
Shrub

ERICACEAE

Arctostaphylos manzanita ssp. manzanita
© 2024 Alaine Arslan
Arctostaphylos manzanita ssp. manzanita
© 2021 Mike Russler
Arctostaphylos manzanita ssp. manzanita
© 2023 R.A. Chasey

Arctostaphylos viscida ssp. pulchella    Sticky whiteleaf manzanita,  White leaf manzanita
native
Tree, Shrub

ERICACEAE

Arctostaphylos viscida ssp. pulchella
© 2024 Emily R. Allen
Arctostaphylos viscida ssp. pulchella
© 2022 R.A. Chasey
Arctostaphylos viscida ssp. pulchella
© 2021 R.A. Chasey

Aristolochia californica    California pipe vine,  California pipevine,  Dutchman's pipe
native
Vine, Shrub

ARISTOLOCHIACEAE

Aristolochia californica
© 2024 Ty Childress
Aristolochia californica
© 2018 Pamela Bateman
Aristolochia californica
© 2019 Ramona Robison

Artemisia douglasiana    California mugwort,  Douglas' sagewort
native
Perennial herb

ASTERACEAE

Artemisia douglasiana
© 2022 Ron Vanderhoff
Artemisia douglasiana
© 2016 Glen Schneider
Artemisia douglasiana
© 2021 Mike Russler

Aspidotis densa    Cliffbrake,  Lace fern
native
Fern

PTERIDACEAE

Aspidotis densa
© 2023 Steve Conger
Aspidotis densa
© 2019 Matt Berger
Aspidotis densa
© 2015 James Gonsman

Astragalus gambelianus    Dwarf loco weed,  Gambel's dwarf milk vetch,  Gambel's locoweed
native
Annual herb

FABACEAE

Astragalus gambelianus
© 2019 Ron Vanderhoff
Astragalus gambelianus
© 2022 Mike Russler
Astragalus gambelianus
© 2024 R.A. Chasey

Athysanus pusillus    Athysanus,  Common sandweed,  Dwarf athysanus
native
Annual herb

BRASSICACEAE

Athysanus pusillus
© 2008 Steve Matson
Athysanus pusillus
© 2008 Steve Matson
Athysanus pusillus
© 2008 Steve Matson

Avena barbata    Slender oat,  Slim oat
invasive non-native
Annual grass

POACEAE

Avena barbata
© 2018 Julian Geoghegan
Avena barbata
© 2023 David popp
Avena barbata
© 2019 Ron Vanderhoff

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

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

Barbarea orthoceras    American rocket,  American wintercress,  Erectpod wintercress
native
Perennial herb

BRASSICACEAE

Barbarea orthoceras
© 2015 James Gonsman
Barbarea orthoceras
© 2019 Diane Etchison
Barbarea orthoceras
© 2020 Diane Etchison

Boykinia occidentalis    Brook foam,  Coastal brookfoam,  Western boykinia
native
Perennial herb

SAXIFRAGACEAE

Boykinia occidentalis
© 2014 James Gonsman
Boykinia occidentalis
© 2017 Hunter Breck
Boykinia occidentalis
© 2021 Bryant Baker

Brachypodium distachyon    False brome,  Purple false brome
invasive non-native
Annual, Perennial grass

POACEAE

Brachypodium distachyon
© 2019 Ron Vanderhoff
Brachypodium distachyon
© 2021 John Rawlings
Brachypodium distachyon
© 2019 Ron Vanderhoff

Briza maxima    Big quaking grass,  Big quakinggrass,  Rattlesnake grass
invasive non-native
Annual grass

POACEAE

Briza maxima
© 2017 Gary McDonald
Briza maxima
© 2018 Bill Schmidt
Briza maxima
© 2017 Gary McDonald

Briza minor    Little quaking grass,  Little quakinggrass,  Little rattlesnake grass
non-native
Annual grass

POACEAE

Briza minor
© 2023 R.A. Chasey
Briza minor
© 2019 Gary McDonald
Briza minor
© 2019 Gary McDonald

Brodiaea elegans ssp. elegans    Harvest brodiaea
native
Perennial herb

THEMIDACEAE

Brodiaea elegans ssp. elegans
© 2024 Alaine Arslan
Brodiaea elegans ssp. elegans
© 2016 Steve Matson
Brodiaea elegans ssp. elegans
© 2018 Japhia Huhndorf

Bromus carinatus var. carinatus    California brome,  Mountain brome
native
Perennial grass

POACEAE

Bromus carinatus var. carinatus
© 2016 Richard Chasey
Bromus carinatus var. carinatus
© 2013 Jean Pawek
Bromus carinatus var. carinatus
© 2021 Amelia Ryan

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

Bromus hordeaceus    Soft brome,  Soft chess
invasive non-native
Annual grass

POACEAE

Bromus hordeaceus
© 2023 Ron Vanderhoff
Bromus hordeaceus
© 2018 Gary McDonald
Bromus hordeaceus
© 2018 Gary McDonald

Bromus laevipes    Chinook brome,  Narrow flowered brome,  Woodland brome
native
Perennial grass

POACEAE

Bromus laevipes
© 2020 Alice Cummings
Bromus laevipes
© 2019 Kimberly Moses
Bromus laevipes
© 2018 Ken Hickman

invasive non-native
Annual grass

POACEAE

Bromus madritensis ssp. rubens
© 2015 Chris Jaster
Bromus madritensis ssp. rubens
© 2015 jamie smith
Bromus madritensis ssp. rubens
© 2018 Gary McDonald

Calandrinia ciliata    red maids,  Calandrinia
native
Annual herb

MONTIACEAE

Calandrinia ciliata
© 2021 Mary Ann Machi
Calandrinia ciliata
© 2024 Ron Vanderhoff
Calandrinia ciliata
© 2019 Ron Vanderhoff

Calochortus amabilis    Golden fairy lantern,  Golden globelily,  Short lily
native
Perennial herb

LILIACEAE

Calochortus amabilis
© 2014 Steve Matson
Calochortus amabilis
© 2014 Steve Matson
Calochortus amabilis
© 2024 Alaine Arslan

Calochortus luteus    Yellow mariposa lily
native
Perennial herb

LILIACEAE

Calochortus luteus
© 2014 Steve Matson
Calochortus luteus
© 2014 Steve Matson
Calochortus luteus
© 2023 John L. Thompson

Calycadenia truncata    Rosin weed
native
Annual herb

ASTERACEAE

Calycadenia truncata
© 2016 Steve Matson
Calycadenia truncata
© 2016 Steve Matson
Calycadenia truncata
© 2023 Helen Hancock

Calycanthus occidentalis    Spicebush,  Sweet shrub
native
Shrub

CALYCANTHACEAE

Calycanthus occidentalis
© 2016 Steve Matson
Calycanthus occidentalis
© 2016 Steve Matson
Calycanthus occidentalis
© 2019 Julie A. Kierstead

Calystegia collina    Coast range false bindweed,  Hillside morning glory
native
Perennial herb

CONVOLVULACEAE

Calystegia collina
© 2018 Eliezer Margolis
Calystegia collina
© 2022 R.A. Chasey
Calystegia collina
© 2020 Cynthia Powell

Calystegia occidentalis ssp. occidentalis    Chaparral false bindweed,  Modoc morning glory,  Western morning glory
native
Perennial herb

CONVOLVULACEAE

Calystegia occidentalis ssp. occidentalis
© 2016 Steve Matson
Calystegia occidentalis ssp. occidentalis
© 2016 Steve Matson
Calystegia occidentalis ssp. occidentalis
© 2016 Steve Matson

Calystegia purpurata ssp. purpurata    Pacific false bindweed,  Purple western morning glory,  Smooth western morning glory
native
Perennial herb

CONVOLVULACEAE

Calystegia purpurata ssp. purpurata
© 2021 Cara Wilcox
Calystegia purpurata ssp. purpurata
© 2014 James Gonsman
Calystegia purpurata ssp. purpurata
© 2020 Robert Steers

Capsella bursa-pastoris    Shepherd's purse
non-native
Annual herb

BRASSICACEAE

Capsella bursa-pastoris
© 2008 Steve Matson
Capsella bursa-pastoris
© 2008 Steve Matson
Capsella bursa-pastoris
© 2008 Steve Matson

Cardamine californica    California toothwort,  milkmaids
native
Perennial herb

BRASSICACEAE

Cardamine californica
© 2020 Barbara Peck
Cardamine californica
© 2019 Ron Vanderhoff
Cardamine californica
© 2019 Ron Vanderhoff

Cardamine oligosperma    Bitter cress,  Idaho bittercress
native
Annual, Perennial herb

BRASSICACEAE

Cardamine oligosperma
© 2008 Steve Matson
Cardamine oligosperma
© 2008 Steve Matson
Cardamine oligosperma
© 2008 Steve Matson

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

Carex amplifolia    Ample leaved sedge,  Big leaf sedge
native
Perennial grasslike herb

CYPERACEAE

Carex amplifolia
© 2002 Steve Matson
Carex amplifolia
© 2002 Steve Matson
Carex amplifolia
© 2019 Matt Berger

Carex buxbaumii    Buxbaum's sedge
rare native
Perennial grasslike herb

CYPERACEAE

Carex buxbaumii
© 2010 Steve Matson
Carex buxbaumii
© 2024 Donald Burk
Carex buxbaumii
© 2017 Steve Matson

Carex densa    Dense sedge,  Sedge
native
Perennial grasslike herb

CYPERACEAE

Carex densa
© 2023 John Rawlings
Carex densa
© 2023 R.A. Chasey
Carex densa
© 2022 R.A. Chasey

Carex globosa    Round fruit sedge
native
Perennial grasslike herb

CYPERACEAE

Carex globosa
© 2014 Steve Matson
Carex globosa
© 2014 Steve Matson
Carex globosa
© 2014 Steve Matson

Carex ovalis    Hare or oval sedge
native
Perennial grasslike herb

CYPERACEAE

Carex ovalis
© null
Carex ovalis
© 2009 Chris Wagner
Carex ovalis
© 2009 Chris Wagner

Carex tumulicola    Foothill sedge,  Slender sedge,  Split awn sedge
native
Perennial grasslike herb

CYPERACEAE

Carex tumulicola
© 2017 David Greenberger
Carex tumulicola
© 2021 John Rawlings
Carex tumulicola
© 2021 John Rawlings

Castilleja attenuata    Narrow leaved owl's clover,  Valley tassels
native
Annual herb

OROBANCHACEAE

Castilleja attenuata
© 2024 Steve Conger
Castilleja attenuata
© 2024 Mary Ann Machi
Castilleja attenuata
© 2019 Timothy Boomer

Castilleja foliolosa    Texas paintbrush,  Woolly indian paintbrush
native
Perennial herb

OROBANCHACEAE

Castilleja foliolosa
© 2018 Steve Matson
Castilleja foliolosa
© 2018 Steve Matson
Castilleja foliolosa
© 2019 Ron Vanderhoff

Ceanothus cuneatus var. cuneatus    Buck brush,  Buckbrush
native
Shrub

RHAMNACEAE

Ceanothus cuneatus var. cuneatus
© 2021 Steve Matson
Ceanothus cuneatus var. cuneatus
© 2016 Steve Matson
Ceanothus cuneatus var. cuneatus
© 2021 Steve Matson

Ceanothus foliosus var. foliosus    Wavy leaved ceanothus,  Wavyleaf ceanothus
native
Shrub

RHAMNACEAE

Ceanothus foliosus var. foliosus
© 2022 Michelle Karle
Ceanothus foliosus var. foliosus
© 2022 R.A. Chasey
Ceanothus foliosus var. foliosus
© 2025 Mike Russler

Ceanothus jepsonii var. jepsonii    Jepson ceanothus,  Musk brush
native
Shrub

RHAMNACEAE

Ceanothus jepsonii var. jepsonii
© 2015 James Gonsman
Ceanothus jepsonii var. jepsonii
© 2018 Tina Curiel
Ceanothus jepsonii var. jepsonii
© 2025 Mike Russler

native
Shrub

RHAMNACEAE

Ceanothus oliganthus var. sorediatus
© 2017 Steve Matson
Ceanothus oliganthus var. sorediatus
© 2017 Steve Matson
Ceanothus oliganthus var. sorediatus
© 2017 Steve Matson

Ceanothus parryi    Parry ceanothus
native
Shrub

RHAMNACEAE

Ceanothus parryi
© 2022 Cynthia Powell
Ceanothus parryi
© 2018 Cynthia Powell
Ceanothus parryi
© 2022 Cynthia Powell

Ceanothus sonomensis    Sonoma ceanothus
rare native
Shrub

RHAMNACEAE

Ceanothus sonomensis
© 2023 Suzanne L. Weakley
Ceanothus sonomensis
© 2023 Michelle Karle
Ceanothus sonomensis
© 2023 Michelle Karle

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

Centaurea solstitialis    Barnaby's thistle,  Yellow star thistle
invasive non-native
Annual herb

ASTERACEAE

Centaurea solstitialis
© 2022 Cynthia Powell
Centaurea solstitialis
© 2019 Arlee Montalvo
Centaurea solstitialis
© 2022 Mary Herr

Centaurium trichanthum    Alkali centaury
native
Annual herb

GENTIANACEAE

Centaurium trichanthum
© 2021 Charles Russell
Centaurium trichanthum
© 2021 Charles Russell
Centaurium trichanthum
© 2019 Paul Aigner

Cerastium glomeratum    Large mouse ears,  Mouseear chickweed,  Sticky chickweed
non-native
Annual herb

CARYOPHYLLACEAE

Cerastium glomeratum
© 2023 Ron Vanderhoff
Cerastium glomeratum
© 2023 Ron Vanderhoff
Cerastium glomeratum
© 2023 R.A. Chasey

Cercocarpus betuloides var. betuloides    Birch leaf mountain mahogany
native
Tree, Shrub

ROSACEAE

Cercocarpus betuloides var. betuloides
© 2021 Steve Matson
Cercocarpus betuloides var. betuloides
© 2021 Steve Matson
Cercocarpus betuloides var. betuloides
© 2016 Ron Vanderhoff

Chamomilla suaveolens    Pineapple weed
native
Annual herb

ASTERACEAE

Chamomilla suaveolens
© 2008 Steve Matson
Chamomilla suaveolens
© 2008 Steve Matson
Chamomilla suaveolens
© 2018 Stacie Wolny

Cheilanthes intertexta    Coastal lip fern
native
Fern

PTERIDACEAE

Cheilanthes intertexta
© 2018 Adam Chasey
Cheilanthes intertexta
© 2020 R.A. Chasey
Cheilanthes intertexta
© 2020 R.A. Chasey

Chlorogalum pomeridianum    Amole,  Soap plant,  Soaproot
native
Perennial herb

AGAVACEAE

Chlorogalum pomeridianum
© 2019 Patrick Furtado
Chlorogalum pomeridianum
© 2019 Patrick Furtado
Chlorogalum pomeridianum
© 2019 Mary Conway

Cichorium intybus    Chicory
non-native
Perennial herb

ASTERACEAE

Cichorium intybus
© 2020 Bob Sweatt
Cichorium intybus
© 2022 David Strauch
Cichorium intybus
© 2019 Diane Etchison

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

Cirsium vulgare    Bull thistle
invasive non-native
Perennial herb

ASTERACEAE

Cirsium vulgare
© 2017 James Bailey
Cirsium vulgare
© 2020 Bob Sweatt
Cirsium vulgare
© 2020 Bob Sweatt

Clarkia amoena ssp. huntiana    Farewell to spring
native
Annual herb

ONAGRACEAE

Clarkia amoena ssp. huntiana
© 2019 Steve Laymon
Clarkia amoena ssp. huntiana
© 2019 Steve Laymon
Clarkia amoena ssp. huntiana
© 2020 Steve Laymon

Clarkia gracilis ssp. gracilis    Graceful clarkia,  Slender clarkia
native
Annual herb

ONAGRACEAE

Clarkia gracilis ssp. gracilis
© 2021 Steve Laymon
Clarkia gracilis ssp. gracilis
© 2023 Larry Dizmang
Clarkia gracilis ssp. gracilis
© 2020 Steve Laymon

Clarkia purpurea ssp. quadrivulnera    Four-spot,  Purple clarkia,  Purple godetia
native
Annual herb

ONAGRACEAE

Clarkia purpurea ssp. quadrivulnera
© 2014 Steve Matson
Clarkia purpurea ssp. quadrivulnera
© 2016 Steve Matson
Clarkia purpurea ssp. quadrivulnera
© 2016 Steve Matson

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

ONAGRACEAE

Clarkia unguiculata
© 2024 Bob Stahmer
Clarkia unguiculata
© 2019 Bryant Baker
Clarkia unguiculata
© 2021 Mike Russler

Claytonia exigua ssp. exigua    Little spring beauty,  Serpentine springbeauty,  Viridis
native
Annual herb

MONTIACEAE

Claytonia exigua ssp. exigua
© 2019 Steve Matson
Claytonia exigua ssp. exigua
© 2019 Steve Matson
Claytonia exigua ssp. exigua
© 2019 Steve Matson

Claytonia parviflora ssp. parviflora    Narrow leaved miner's lettuce,  Streambank springbeauty,  Utah miner s lettuce
native
Annual herb

MONTIACEAE

Claytonia parviflora ssp. parviflora
© 2022 Ron Vanderhoff
Claytonia parviflora ssp. parviflora
© 2017 Gary McDonald
Claytonia parviflora ssp. parviflora
© 2017 Gary McDonald

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 Matt Berger

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

native
Annual herb

PLANTAGINACEAE

Collinsia sparsiflora var. arvensis
© 2013 James Gonsman
Collinsia sparsiflora var. arvensis
© 2023 R.A. Chasey
Collinsia sparsiflora var. arvensis
© 2015 dloarie /
Don Loarie

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

Convolvulus arvensis    Field bindweed,  Orchard morningglory
invasive non-native
Perennial herb, Vine

CONVOLVULACEAE

Convolvulus arvensis
© 2022 Steve Matson
Convolvulus arvensis
© 2021 Ron Vanderhoff
Convolvulus arvensis
© 2022 Steve Matson

Conyza canadensis    Canada horseweed
native
Annual herb

ASTERACEAE

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

Corylus cornuta var. californica    Beaked hazelnut
native
Shrub

BETULACEAE

Corylus cornuta var. californica
© 2017 Steve Matson
Corylus cornuta var. californica
© 2017 Steve Matson
Corylus cornuta var. californica
© 2017 Steve Matson

Cupressus sargentii    Sargent cypress
native
Tree, Shrub

CUPRESSACEAE

Cupressus sargentii
© 2021 Bryant Baker
Cupressus sargentii
© 2021 R.A. Chasey
Cupressus sargentii
© 2021 Bryant Baker

Cuscuta californica var. californica    California dodder,  Chaparral dodder,  Short flowered dodder
native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta californica var. californica
© 2021 R.A. Chasey
Cuscuta californica var. californica
© 2021 Ron Vanderhoff
Cuscuta californica var. californica
© 2021 Ron Vanderhoff

Cynodon dactylon    Bermuda grass,  Bermudagrass
invasive non-native
Perennial grass

POACEAE

Cynodon dactylon
© 2021 Ron Vanderhoff
Cynodon dactylon
© 2020 Ron Vanderhoff
Cynodon dactylon
© 2021 Ron Vanderhoff

Cynoglossum grande    Hound's tongue,  Western houndstongue,  Adelinia
native
Perennial herb

BORAGINACEAE

Cynoglossum grande
© 2022 David Strauch
Cynoglossum grande
© 2007 Steve Matson
Cynoglossum grande
© 2021 Dee Shea Himes

Cynosurus echinatus    Annual dogtail,  Bristly dogstail grass,  Dogtail grass
invasive non-native
Annual grass

POACEAE

Cynosurus echinatus
© 2024 R.A. Chasey
Cynosurus echinatus
© 2010 Julie A. Kierstead
Cynosurus echinatus
© 2022 Ron Vanderhoff

Cyperus eragrostis    Tall cyperus,  Tall flatsedge
native
Perennial grasslike herb

CYPERACEAE

Cyperus eragrostis
© 2016 Joan Hampton
Cyperus eragrostis
© 2024 Ron Vanderhoff
Cyperus eragrostis
© 2024 Ron Vanderhoff

Cytisus scoparius    Scotch broom,  Scotchbroom
invasive non-native
Shrub

FABACEAE

Cytisus scoparius
© 2016 Steve Matson
Cytisus scoparius
© 2016 Steve Matson
Cytisus scoparius
© 2016 Steve Matson

Danthonia californica var. californica    California oatgrass
native
Perennial grass

POACEAE

Danthonia californica var. californica
© 2024 R.A. Chasey
Danthonia californica var. californica
© 2021 John Rawlings
Danthonia californica var. californica
© 2023 R.A. Chasey

Delphinium nudicaule    Canyon larkspur,  Red or Orange Larkspur,  Red larkspur
native
Perennial herb

RANUNCULACEAE

Delphinium nudicaule
© 2024 Mary Ann Machi
Delphinium nudicaule
© 2019 David Magney
Delphinium nudicaule
© 2006 Steve Matson

Dendromecon rigida    Bush poppy,  Tree poppy
native
Shrub

PAPAVERACEAE

Dendromecon rigida
© 2024 Mike Russler
Dendromecon rigida
© 2024 Mike Russler
Dendromecon rigida
© 2020 Ron Vanderhoff

Dichelostemma capitatum ssp. capitatum    Blue dicks,  Wild hyacinth
native
Perennial herb

THEMIDACEAE

Dichelostemma capitatum ssp. capitatum
© 2017 Alison Sheehey
Dichelostemma capitatum ssp. capitatum
© Geoff Burleigh
Dichelostemma capitatum ssp. capitatum
© 2015 Ken Lunders

Dichelostemma congestum    Fork toothed ookow,  Ookow
native
Perennial herb

THEMIDACEAE

Dichelostemma congestum
© 2017 Gary Morgret
Dichelostemma congestum
© 2019 Suzanne L. Weakley
Dichelostemma congestum
© 2023 Teal Derrer

Disporum hookeri    Drops of gold
native
Perennial herb

LILIACEAE

Disporum hookeri
© 2021 Norma Solarz
Disporum hookeri
© 2021 Cara Wilcox
Disporum hookeri
© 2019 Stacie Wolny

Dodecatheon hendersonii    Mosquito bill
native
Perennial herb

PRIMULACEAE

Dodecatheon hendersonii
© 2025 Britt Thorsnes
Dodecatheon hendersonii
© 2016 Steve Matson
Dodecatheon hendersonii
© 2020 BLM Redding Field Office

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

Dudleya cymosa    Canyon dudleya,  Canyon liveforever,  Rock lettuce
native
Perennial herb

CRASSULACEAE

Dudleya cymosa
© 2019 Steve Matson
Dudleya cymosa
© 2019 Steve Matson
Dudleya cymosa
© 2020 Kristin Sabo

Elymus elymoides ssp. californicus    Squirrel tail grass
native
Perennial grass

POACEAE

Elymus elymoides ssp. californicus
© 2021 David popp
Elymus elymoides ssp. californicus
© 2022 Dana York
Elymus elymoides ssp. californicus
© 2007 Steve Matson

Elymus glaucus ssp. glaucus    Blue wild rye,  Blue wildrye,  Western rye grass
native
Perennial grass

POACEAE

Elymus glaucus ssp. glaucus
© 2023 R.A. Chasey
Elymus glaucus ssp. glaucus
© 2021 Arlee Montalvo
Elymus glaucus ssp. glaucus
© 2022 Ron Vanderhoff

Elymus trachycaulus ssp. subsecundus    Slender wheatgrass
native
Perennial grass

POACEAE

Elymus trachycaulus ssp. subsecundus
© 2024 Erin Bergman
Elymus trachycaulus ssp. subsecundus
© 2022 John Rawlings
Elymus trachycaulus ssp. subsecundus
© 2019 Ken Hickman

Emmenanthe penduliflora    Whispering bells,  Whisperingbells
native
Annual herb

HYDROPHYLLACEAE

Emmenanthe penduliflora
© 2022 Steve Matson
Emmenanthe penduliflora
© 2023 Julia Markey
Emmenanthe penduliflora
© 2022 David Strauch

Epilobium canum ssp. latifolium    California fuchsia,  Hummingbird trumpet,  Mountain california fuchsia
native
Perennial herb

ONAGRACEAE

Epilobium canum ssp. latifolium
© 2015 Steve Matson
Epilobium canum ssp. latifolium
© 2023 Steve Conger
Epilobium canum ssp. latifolium
© 2016 Rebecca Schoenenberger

Epilobium minutum    Chaparral willowherb,  Desert willow herb,  Little willowherb
native
Annual herb

ONAGRACEAE

Epilobium minutum
© 2017 Michael Mitchell
Epilobium minutum
© 2021 R.A. Chasey
Epilobium minutum
© 2019 Ken Lunders

Equisetum laevigatum    Horsetail,  Smooth horsetail,  Smooth scouring rush
native
Fern

EQUISETACEAE

Equisetum laevigatum
© 2020 Ron Vanderhoff
Equisetum laevigatum
© 2021 Richard Spjut
Equisetum laevigatum
© 2020 Ron Vanderhoff

Equisetum telmateia ssp. braunii    Giant horse tail,  Giant horsetail
native
Fern

EQUISETACEAE

Equisetum telmateia ssp. braunii
© 2016 Steve Matson
Equisetum telmateia ssp. braunii
© 2016 Steve Matson
Equisetum telmateia ssp. braunii
© 2022 Suzanne L. Weakley

Eremocarpus setigerus    Turkey-mullein
native
Annual herb

EUPHORBIACEAE

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

Erigeron biolettii    Biolett's erigeron,  Streamside daisy
rare native
Perennial herb

ASTERACEAE

Erigeron biolettii
© 2023 R.A. Chasey
Erigeron biolettii
© 2019 R.A. Chasey
Erigeron biolettii
© 2019 R.A. Chasey

Erigeron philadelphicus    Philadelphia fleabane
native
Perennial herb

ASTERACEAE

Erigeron philadelphicus
© andreenannemarie
Erigeron philadelphicus
© 2023 R.A. Chasey
Erigeron philadelphicus
© 2022 Dana York

Eriodictyon californicum    California yerba santa,  Yerba santa
native
Shrub

NAMACEAE

Eriodictyon californicum
© 2023 Suzanne L. Weakley
Eriodictyon californicum
© 2022 BOB CASE
Eriodictyon californicum
© 2020 Julie A. Kierstead

Eriogonum luteolum    Golden buckwheat,  Goldencarpet buckwheat,  Wicker buckwheat
native
Annual herb

POLYGONACEAE

Eriogonum luteolum
© 2011 Steve Matson
Eriogonum luteolum
© 2011 Steve Matson
Eriogonum luteolum
© 2020 Paul Aigner

Eriogonum nudum var. nudum    Naked buckwheat,  Naked Wild Buckwheat,  Nude buckwheat
native
Shrub

POLYGONACEAE

Eriogonum nudum var. nudum
© 2021 Mike Russler
Eriogonum nudum var. nudum
© 2021 Mike Russler
Eriogonum nudum var. nudum
© 2021 Mike Russler

Eriophyllum confertiflorum var. confertiflorum    Golden yarrow,  Yellow yarrow
native
Shrub

ASTERACEAE

Eriophyllum confertiflorum var. confertiflorum
© 2023 Ryan O'Dell
Eriophyllum confertiflorum var. confertiflorum
© 2013 James Gonsman
Eriophyllum confertiflorum var. confertiflorum
© 2020 Ron Vanderhoff

Eriophyllum lanatum var. achillaeoides    Yarrow leaved woolly sunflower
native
Perennial herb

ASTERACEAE

Eriophyllum lanatum var. achillaeoides
© 2006 Steve Matson
Eriophyllum lanatum var. achillaeoides
© 2008 Steve Matson
Eriophyllum lanatum var. achillaeoides
© 2006 Steve Matson

Erodium botrys    Big heron bill,  Broad leaf filaree,  Long beaked filaree
non-native
Annual herb

GERANIACEAE

Erodium botrys
© 2006 Steve Matson
Erodium botrys
© 2006 Steve Matson
Erodium botrys
© 2006 Steve Matson

Erodium brachycarpum    Foothill filaree,  Short fruited filaree,  Shortfruit stork's bill
invasive non-native
Annual herb

GERANIACEAE

Erodium brachycarpum
© 2016 Bob van Duinen
Erodium brachycarpum
© 2016 Steve Matson
Erodium brachycarpum
© 2016 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

Erodium moschatum    Musky stork's bill,  White stemmed filaree,  Whitestem filaree
invasive non-native
Annual herb

GERANIACEAE

Erodium moschatum
© 2016 Steve Matson
Erodium moschatum
© 2016 Steve Matson
Erodium moschatum
© 2016 Steve Matson

Eschscholzia californica    California poppy
native
Annual, Perennial herb

PAPAVERACEAE

Eschscholzia californica
© 2019 Dee Shea Himes
Eschscholzia californica
© 2021 Ron Vanderhoff
Eschscholzia californica
© 2019 Amy Rapport

Eucalyptus globulus    Blue gum,  Tasmanian bluegum
invasive non-native
Tree

MYRTACEAE

Eucalyptus globulus
© 2022 Ron Vanderhoff
Eucalyptus globulus
© 2022 Ron Vanderhoff
Eucalyptus globulus
© 2022 Ron Vanderhoff

Festuca californica    California fescue
native
Perennial grass

POACEAE

Festuca californica
© 2019 Justin Luong
Festuca californica
© 2022 Justin Luong
Festuca californica
© 2021 Veronica Yates

Festuca elmeri    Coast fescue,  Elmer fescue
native
Perennial grass

POACEAE

Festuca elmeri
© 2022 John Rawlings
Festuca elmeri
© 2019 Ken Hickman
Festuca elmeri
© 2019 Ken Hickman

Festuca idahoensis    Blue bunchgrass,  Blue fescue,  Idaho fescue
native
Perennial grass

POACEAE

Festuca idahoensis
© 2016 Brett Dean
Festuca idahoensis
© 2020 Paul Aigner
Festuca idahoensis
© 2016 Andrew Longman

Ficus carica    Common fig,  Edible fig
invasive non-native
Tree

MORACEAE

Ficus carica
© 2019 Ron Vanderhoff
Ficus carica
© 2022 Ron Vanderhoff
Ficus carica
© 2018 Vicki Salazar

Filago californica    California cottonrose
native
Annual herb

ASTERACEAE

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

Filago gallica    Narrowleaf cottonrose
non-native
Annual herb

ASTERACEAE

Filago gallica
© 2023 R.A. Chasey
Filago gallica
© 2024 Mike Russler
Filago gallica
© 2017 Barbara Boethling

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

APIACEAE

Foeniculum vulgare
© 2019 Ron Vanderhoff
Foeniculum vulgare
© 2023 Fred Roberts
Foeniculum vulgare
© 2022 Ryan O'Dell

Fraxinus latifolia    Oregon ash
native
Tree

OLEACEAE

Fraxinus latifolia
© 2021 Robert Whitaker
Fraxinus latifolia
© 2021 Richard Spjut
Fraxinus latifolia
© 2012 Terrence Gosliner

Fritillaria affinis var. affinis    Checker lily,  Mission bells
native
Perennial herb (bulb)

LILIACEAE

Fritillaria affinis var. affinis
© 2008 Steve Matson
Fritillaria affinis var. affinis
© 2008 Steve Matson
Fritillaria affinis var. affinis
© 2008 Steve Matson

Galium aparine    Cleavers,  Common bedstraw,  Goose grass
native
Annual herb

RUBIACEAE

Galium aparine
© 2020 Ron Vanderhoff
Galium aparine
© 2023 Julia Markey
Galium aparine
© 2020 Ron Vanderhoff

Galium divaricatum    Lamarck's bedstraw
non-native
Annual herb

RUBIACEAE

Galium divaricatum
© 2024 Donald Burk
Galium divaricatum
© 2024 Donald Burk
Galium divaricatum
© 2024 Donald Burk

Galium murale    Tiny bedstraw,  Yellow wall bedstraw
non-native
Annual herb

RUBIACEAE

Galium murale
© 2022 R.A. Chasey
Galium murale
© 2021 Cameron Chabre
Galium murale
© 2014 Bryan Derr

Galium parisiense    Wall bedstraw
non-native
Annual herb

RUBIACEAE

Galium parisiense
© 2020 Ron Vanderhoff
Galium parisiense
© 2021 Al Keuter
Galium parisiense
© 2023 R.A. Chasey

Galium porrigens var. tenue    Graceful bedstraw
native
Vine, Shrub

RUBIACEAE

Galium porrigens var. tenue
© 2005 Steve Matson
Galium porrigens var. tenue
© 2005 Steve Matson
Galium porrigens var. tenue
© 2005 Steve Matson

Gastridium ventricosum    Nit grass
non-native
Annual grass

POACEAE

Gastridium ventricosum
© 2020 Ron Vanderhoff
Gastridium ventricosum
© 2020 Ron Vanderhoff
Gastridium ventricosum
© 2017 Gary McDonald

Genista monspessulana    French broom
invasive non-native
Shrub

FABACEAE

Genista monspessulana
© 2019 Ron Vanderhoff
Genista monspessulana
© 2019 Ron Vanderhoff
Genista monspessulana
© 2021 Michelle Karle

Geranium dissectum    Cranesbill,  Cut leaved geranium,  Cutleaf geranium
invasive non-native
Annual herb

GERANIACEAE

Geranium dissectum
© 2021 Al Keuter
Geranium dissectum
© 2024 Mike Russler
Geranium dissectum
© 2014 Bryan Derr

Geranium molle    Crane's bill geranium,  Dove's foot geranium,  Dovefoot geranium
invasive non-native
Annual, Perennial herb

GERANIACEAE

Geranium molle
© 2008 Steve Matson
Geranium molle
© 2008 Steve Matson
Geranium molle
© 2008 Steve Matson

Gilia capitata ssp. capitata    Blue field gilia,  Bluehead gilia
native
Annual herb

POLEMONIACEAE

Gilia capitata ssp. capitata
© 2014 Steve Matson
Gilia capitata ssp. capitata
© 2014 Steve Matson
Gilia capitata ssp. capitata
© 2011 Gerald Carr

Gilia tricolor ssp. tricolor    Bird's eye gilia,  Bird's eyes
native
Annual herb

POLEMONIACEAE

Gilia tricolor ssp. tricolor
© 2021 Steve Matson
Gilia tricolor ssp. tricolor
© 2021 Steve Matson
Gilia tricolor ssp. tricolor
© 2021 Steve Matson

Guillenia lasiophylla    California mustard
native
Annual herb

BRASSICACEAE

Guillenia lasiophylla
© 2022 Steve Matson
Guillenia lasiophylla
© 2023 Steve Matson
Guillenia lasiophylla
© 2010 Steve Matson

Helenium puberulum    Rosilla,  Sneezeweed
native
Perennial herb

ASTERACEAE

Helenium puberulum
© 2021 Mike Russler
Helenium puberulum
© 2019 Patrick Furtado
Helenium puberulum
© 2018 Rachelle Gray

Helianthemum scoparium    Peak Rushrose
native
Shrub

CISTACEAE

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

Hemizonia congesta ssp. luzulifolia    Hayfield tarweed,  Woodrush tarweed
native
Annual herb

ASTERACEAE

Hemizonia congesta ssp. luzulifolia
© 2013 Arcangelo Wessells
Hemizonia congesta ssp. luzulifolia
© 2022 R.A. Chasey
Hemizonia congesta ssp. luzulifolia
© 2022 R.A. Chasey

Heracleum lanatum    Common cow parsnip
native
Perennial herb

APIACEAE

Heracleum lanatum
© 2019 Bob Sweatt
Heracleum lanatum
© 2008 Neal Kramer
Heracleum lanatum
© 2021 J.Fred Decker

Hesperolinon micranthum    Common dwarf flax,  Small flower western flax,  Small flowered dwarf flax
native
Annual herb

LINACEAE

Hesperolinon micranthum
© 2024 Mike Russler
Hesperolinon micranthum
© 2024 Mike Russler
Hesperolinon micranthum
© 2021 R.A. Chasey

Hesperolinon spergulinum    Slender dwarf flax,  Slender western flax
native
Annual herb

LINACEAE

Hesperolinon spergulinum
© 2021 R.A. Chasey
Hesperolinon spergulinum
© 2021 R.A. Chasey
Hesperolinon spergulinum
© 2021 R.A. Chasey

Heterocodon rariflorum    Few flowered heterocodon,  Rareflower heterocodon,  Western pear flower
native
Annual herb

CAMPANULACEAE

Heterocodon rariflorum
© 2022 Steve Matson
Heterocodon rariflorum
© 2022 Steve Matson
Heterocodon rariflorum
© 2022 Steve Matson

Heteromeles arbutifolia    Christmas berry,  Toyon
native
Shrub

ROSACEAE

Heteromeles arbutifolia
© 2015 James Gonsman
Heteromeles arbutifolia
© 2017 Gary McDonald
Heteromeles arbutifolia
© 2022 John Doyen

Heuchera micrantha    Alum root,  Crevice alumroot
native
Perennial herb

SAXIFRAGACEAE

Heuchera micrantha
© 2008 Steve Matson
Heuchera micrantha
© 2008 Steve Matson
Heuchera micrantha
© 2008 Steve Matson

Hieracium albiflorum    White flowered hawkweed,  White hawkweed
native
Perennial herb

ASTERACEAE

Hieracium albiflorum
© 2003 Steve Matson
Hieracium albiflorum
© 2003 Steve Matson
Hieracium albiflorum
© 2003 Steve Matson

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

Holcus lanatus    Common velvetgrass,  Velvet grass,  Velvetgrass
invasive non-native
Perennial grass

POACEAE

Holcus lanatus
© 2019 Bill Haley
Holcus lanatus
© 2024 David popp
Holcus lanatus
© 2019 Bill Haley

Holodiscus discolor    Cream bush,  Ocean spray,  Oceanspray
native
Shrub

ROSACEAE

Holodiscus discolor
© 2017 Steve Matson
Holodiscus discolor
© 2017 Steve Matson
Holodiscus discolor
© 2022 Steve Matson

native
Perennial grass

POACEAE

Hordeum brachyantherum ssp. brachyantherum
© 2015 Steve Matson
Hordeum brachyantherum ssp. brachyantherum
© 2015 Steve Matson
Hordeum brachyantherum ssp. brachyantherum
© 2015 Steve Matson

Hordeum marinum ssp. gussoneanum    Barley,  Mediterranean barley
non-native
Annual grass

POACEAE

Hordeum marinum ssp. gussoneanum
© 2018 Carolyn
Hordeum marinum ssp. gussoneanum
© 2020 Paul Aigner
Hordeum marinum ssp. gussoneanum
© 2017 Toni Corelli

Hordeum murinum ssp. leporinum    Farmer's foxtail,  Foxtail barley,  Hare barley
non-native
Annual grass

POACEAE

Hordeum murinum ssp. leporinum
© 2022 Ron Vanderhoff
Hordeum murinum ssp. leporinum
© 2021 Al Keuter
Hordeum murinum ssp. leporinum
© 2021 Ron Vanderhoff

Hypericum concinnum    Gold wire,  Goldwire
native
Perennial herb

HYPERICACEAE

Hypericum concinnum
© 2018 Cynthia Griffin
Hypericum concinnum
© 2018 Hayley Ross
Hypericum concinnum
© 2018 Hayley Ross

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

Hypochaeris radicata    Hairy cats ear,  Hairy catsear,  Rough cat's ear
invasive non-native
Perennial herb

ASTERACEAE

Hypochaeris radicata
© 2015 James Gonsman
Hypochaeris radicata
© 2017 Gary McDonald
Hypochaeris radicata
© 2016 Michael Mitchell

Iris fernaldii    Fernald's iris
native
Perennial herb

IRIDACEAE

Iris fernaldii
© 2021 Sue Graue
Iris fernaldii
© 2020 Julia Gardner Harencar
Iris fernaldii
© 2020 Susan McDougall

Juglans californica var. hindsii    Northern california black walnut
rare native
Tree

JUGLANDACEAE

Juglans californica var. hindsii
© 2018 Ron Vanderhoff
Juglans californica var. hindsii
© 2016 Steve Matson
Juglans californica var. hindsii
© 2018 Ron Vanderhoff

Juncus balticus    Baltic rush,  Wire rush
native
Perennial grasslike herb

JUNCACEAE

Juncus balticus
© 2015 Steve Matson
Juncus balticus
© 2015 Steve Matson
Juncus balticus
© 2019 Bonnie Nickel

native
Annual grasslike herb

JUNCACEAE

Juncus bufonius var. bufonius
© 2021 John Rawlings
Juncus bufonius var. bufonius
© 2023 R.A. Chasey
Juncus bufonius var. bufonius
© 2019 Ron Vanderhoff

Juncus effusus var. pacificus    Pacific rush
native
Perennial grasslike herb

JUNCACEAE

Juncus effusus var. pacificus
© 2024 R.A. Chasey
Juncus effusus var. pacificus
© 2021 R.A. Chasey
Juncus effusus var. pacificus
© 2021 John Rawlings

Juncus nevadensis    Sierra rush
native
Perennial grasslike herb

JUNCACEAE

Juncus nevadensis
© 2021 Mike Russler
Juncus nevadensis
© 2021 Mike Russler
Juncus nevadensis
© 2021 Mike Russler

Juncus patens    Common rush,  Spreading rush
native
Perennial grasslike herb

JUNCACEAE

Juncus patens
© 2022 R.A. Chasey
Juncus patens
© 2022 R.A. Chasey
Juncus patens
© 2018 Emily Allen

Juncus xiphioides    Iris leaved rush,  Irisleaf rush
native
Perennial grasslike herb

JUNCACEAE

Juncus xiphioides
© 2016 Erik Larsen
Juncus xiphioides
© 2017 Ron Vanderhoff
Juncus xiphioides
© 2023 R.A. Chasey

Lactuca serriola    Prickly lettuce,  Prickly wild lettuce
invasive non-native
Annual herb

ASTERACEAE

Lactuca serriola
© 2017 Gary McDonald
Lactuca serriola
© 2017 Gary McDonald
Lactuca serriola
© 2017 Gary McDonald

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

Lamium purpureum    Henbit,  Purple dead nettle,  Purple deadnettle
non-native
Annual herb

LAMIACEAE

Lamium purpureum
© 2022 Emily R. Allen
Lamium purpureum
© 2023 R.A. Chasey
Lamium purpureum
© 2020 Cynthia Powell

Lasthenia californica    California goldfields,  Common goldfields,  Valley goldfields
native
Annual herb

ASTERACEAE

Lasthenia californica
© 2017 David Greenberger
Lasthenia californica
© 2020 Susan White
Lasthenia californica
© 2017 MCOSD EDRR

Lathyrus cicera    Red peavine
non-native
Annual herb

FABACEAE

Lathyrus cicera
© 2020 Dan Antonaccio
Lathyrus cicera
© 2021 Judy Schwartz
Lathyrus cicera
© 2024 Dan Melin

Lathyrus hirsutus    Caley pea,  Rough pea
non-native
Annual herb

FABACEAE

Lathyrus hirsutus
© 2023 R.A. Chasey
Lathyrus hirsutus
© 2023 R.A. Chasey
Lathyrus hirsutus
© 2023 R.A. Chasey

Lathyrus vestitus var. ochropetalus    Bolander's pacific pea,  Bolander's pea,  Pale pacific pea
native
Perennial herb

FABACEAE

Lathyrus vestitus var. ochropetalus
© 2016 Stephanie Sonora
Lathyrus vestitus var. ochropetalus
© 2018 sea-kangaroo
Lathyrus vestitus var. ochropetalus
© 2019 dgreenberger

Lemna minuscula    Least duckweed
native
Perennial herb

ARACEAE

Lemna minuscula
© 2022 Ron Vanderhoff
Lemna minuscula
© 2020 Ron Vanderhoff
Lemna minuscula
© 2019 Ron Vanderhoff

Lepechinia calycina    White pitcher sage,  Woodbalm, pitcher sage
native
Shrub

LAMIACEAE

Lepechinia calycina
© 2020 Janice Kuch
Lepechinia calycina
© 2024 Ben Spencer-Cooke
Lepechinia calycina
© 2023 Mike Russler

Lepidium strictum    Peppergrass,  Prostrate pepper grass,  Upright pepperweed
native
Annual herb

BRASSICACEAE

Lepidium strictum
© 2022 Ron Vanderhoff
Lepidium strictum
© 2022 Jim Xerogeanes
Lepidium strictum
© 2022 Ron Vanderhoff

Lessingia ramulosa    Sonoma lessingia
native
Annual herb

ASTERACEAE

Lessingia ramulosa
© 2013 BOB CASE
Lessingia ramulosa
© 2020 Paul Aigner
Lessingia ramulosa
© 2021 R.A. Chasey

Linanthus androsaceus    False babystars
native
Annual herb

POLEMONIACEAE

Linanthus androsaceus
© 2010 Jeffrey Hapeman
Linanthus androsaceus
© 2014 James Gonsman
Linanthus androsaceus
© 2018 Amy Rapport

Linanthus bicolor    True babystars
native
Annual herb

POLEMONIACEAE

Linanthus bicolor
© 2008 Steve Matson
Linanthus bicolor
© 2008 Steve Matson
Linanthus bicolor
© 2008 Steve Matson

Linanthus parviflorus    Variable linanthus
native
Annual herb

POLEMONIACEAE

Linanthus parviflorus
© 2008 Keir Morse
Linanthus parviflorus
© 2008 Keir Morse
Linanthus parviflorus
© 2008 Keir Morse

native
Tree, Shrub

FAGACEAE

Lithocarpus densiflorus
© 2022 David Strauch
Lithocarpus densiflorus
© 2019 Bryant Baker
Lithocarpus densiflorus
© 2020 Asa B Spade

Lithophragma affine    Common woodland star,  San Francisco woodland star
native
Perennial herb

SAXIFRAGACEAE

Lithophragma affine
© 2018 Steve Matson
Lithophragma affine
© 2018 Steve Matson
Lithophragma affine
© 2018 Steve Matson

Lithophragma heterophyllum    Hill star,  Hillside woodland star
native
Perennial herb

SAXIFRAGACEAE

Lithophragma heterophyllum
© 2019 David Greenberger
Lithophragma heterophyllum
© 2024 Suzanne L. Weakley
Lithophragma heterophyllum
© 2019 Mary Conway

Lolium multiflorum    Italian rye grass
invasive non-native
Annual, Perennial grass

POACEAE

Lolium multiflorum
© 2019 Ron Vanderhoff
Lolium multiflorum
© 2023 Ron Vanderhoff
Lolium multiflorum
© 2021 Ron Vanderhoff

Lolium perenne    Italian rye grass
invasive non-native
Annual, Perennial grass

POACEAE

Lolium perenne
© 2019 Ron Vanderhoff
Lolium perenne
© 2023 Ron Vanderhoff
Lolium perenne
© 2021 Ron Vanderhoff

Lomatium californicum    California lomatium,  Celery weed
native
Perennial herb

APIACEAE

Lomatium californicum
© 2024 Dana York
Lomatium californicum
© 2022 Richard Sullivan
Lomatium californicum
© 2021 Julie A. Kierstead

Lomatium dasycarpum    Hog fennel,  Lace parsnip,  Woolly fruited lomatium
native
Perennial herb

APIACEAE

Lomatium dasycarpum
© 2016 Steve Matson
Lomatium dasycarpum
© 2016 Steve Matson
Lomatium dasycarpum
© 2018 Julie Kierstead Nelson

Lomatium repostum    Napa biscuitroot,  Napa lomatium
rare native
Perennial herb

APIACEAE

Lomatium repostum
© 2019 Jason Mills
Lomatium repostum
© 2021 Larry Dizmang
Lomatium repostum
© 2021 Larry Dizmang

Lomatium utriculatum    Bladder parsnip,  Common lomatium,  Hog fennel
native
Perennial herb

APIACEAE

Lomatium utriculatum
© 2006 Steve Matson
Lomatium utriculatum
© 2006 Steve Matson
Lomatium utriculatum
© 2015 James Gonsman

Lonicera hispidula var. vacillans    Pink honeysuckle
native
Vine, Shrub

CAPRIFOLIACEAE

Lonicera hispidula var. vacillans
© 2022 Suzanne L. Weakley
Lonicera hispidula var. vacillans
© 2021 Cara Wilcox
Lonicera hispidula var. vacillans
© 2018 Diana Wahl

Lotus humistratus    hill lotus
native
Annual herb

FABACEAE

Lotus humistratus
© 2023 R.A. Chasey
Lotus humistratus
© 2018 Steve Matson
Lotus humistratus
© 2018 Steve Matson

Lotus micranthus    Hill lotus
native
Annual herb

FABACEAE

Lotus micranthus
© 2008 Steve Matson
Lotus micranthus
© 2022 Dana York
Lotus micranthus
© 2008 Steve Matson

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

FABACEAE

Lotus purshianus var. purshianus
© 2015 Steve Matson
Lotus purshianus var. purshianus
© 2015 Steve Matson
Lotus purshianus var. purshianus
© 2015 Steve Matson

Lotus scoparius    Deerweed
native
Perennial herb

FABACEAE

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

Lotus wrangelianus    Wrangel lotus
native
Annual herb

FABACEAE

Lotus wrangelianus
© 2016 Steve Matson
Lotus wrangelianus
© 2016 Steve Matson
Lotus wrangelianus
© 2016 Steve Matson

Lunaria annua    Annual honesty,  Annual moonwort,  Honesty
non-native
Annual, Perennial herb

BRASSICACEAE

Lunaria annua
© 2022 Suzanne L. Weakley
Lunaria annua
© 2021 Lisa Berry
Lunaria annua
© 2021 Mike Russler

Lupinus albifrons var. albifrons    Silver bush lupine,  Silver lupine
native
Shrub

FABACEAE

Lupinus albifrons var. albifrons
© 2020 Susan McDougall
Lupinus albifrons var. albifrons
© 2020 Richard Spjut
Lupinus albifrons var. albifrons
© 2022 Mike Russler

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

Lupinus latifolius var. latifolius    Broad leaf lupine
native
Perennial herb

FABACEAE

Lupinus latifolius var. latifolius
© 2021 Steve Matson
Lupinus latifolius var. latifolius
© 2024 Mike Russler
Lupinus latifolius var. latifolius
© 2017 Steve Matson

Lupinus nanus    Sky lupine
native
Annual herb

FABACEAE

Lupinus nanus
© 2016 Steve Matson
Lupinus nanus
© 2016 Steve Matson
Lupinus nanus
© 2016 Steve Matson

Luzula comosa    Common wood rush,  Hairy wood rush,  Pacific woodrush
native
Perennial grasslike herb

JUNCACEAE

Luzula comosa
© 2021 Steve Matson
Luzula comosa
© 2021 Steve Matson
Luzula comosa
© 2021 Steve Matson

Lythrum hyssopifolium    Hyssop loosestrife
invasive non-native
Annual, Perennial herb

LYTHRACEAE

Lythrum hyssopifolium
© 2019 Diane Etchison
Lythrum hyssopifolium
© 2021 Cynthia Powell
Lythrum hyssopifolium
© 2020 Ron Vanderhoff

Madia elegans ssp. vernalis    Common madia
native
Annual herb

ASTERACEAE

Madia elegans ssp. vernalis
© 2021 Jamie Spielmann
Madia elegans ssp. vernalis
© 2021 Mike Russler
Madia elegans ssp. vernalis
© 2020 Diane Etchison

Madia exigua    Little tarweed,  Meager tarweed,  Small tarweed
native
Annual herb

ASTERACEAE

Madia exigua
© 2023 Dianne Lake
Madia exigua
© 2023 Ron Vanderhoff
Madia exigua
© 2021 Helen Hancock

Madia gracilis    Grassy tarweed,  Gumweed madia,  Slender tarweed
native
Annual herb

ASTERACEAE

Madia gracilis
© 2024 Mike Russler
Madia gracilis
© 2021 Amber Bedgood
Madia gracilis
© 2019 Ron Vanderhoff

Madia madioides    Woodland madia
native
Perennial herb

ASTERACEAE

Madia madioides
© 2023 Suzanne L. Weakley
Madia madioides
© 2023 R.A. Chasey
Madia madioides
© 2016 Cynthia Powell

Madia nutans    Nodding harmonia
rare native
Annual herb

ASTERACEAE

Madia nutans
© 2017 John Game
Madia nutans
© 2018 John Game
Madia nutans
© 2020 Tim Miller

Madia sativa    Chile tarweed,  Coast tarweed,  Coastal tarweed
native
Annual herb

ASTERACEAE

Madia sativa
© 2013 Ron Vanderhoff
Madia sativa
© 2023 Margot Cunningham
Madia sativa
© 2021 Zoya Akulova-Barlow

Malacothrix floccifera    Woolly dandelion,  Woolly desertdandelion,  Woolly malacothrix
native
Annual herb

ASTERACEAE

Malacothrix floccifera
© 2020 Stacie Wolny
Malacothrix floccifera
© 2020 David Greenberger
Malacothrix floccifera
© 2018 Stacie Wolny

Marah fabaceus var. agrestis    California man-root
native
Perennial herb, Vine

CUCURBITACEAE

Marah fabaceus var. agrestis
© 2018 Gary McDonald
Marah fabaceus var. agrestis
© 2018 MCOSD EDRR
Marah fabaceus var. agrestis
© 2021 Cyril Guyot

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

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

Melica californica    California melicgrass
native
Perennial grass

POACEAE

Melica californica
© 2023 John Rawlings
Melica californica
© 2021 John Rawlings
Melica californica
© 2022 John Rawlings

Melica subulata    Alaska melic,  Alaska onion grass,  Alaska oniongrass
native
Perennial grass

POACEAE

Melica subulata
© 2023 Matt Berger
Melica subulata
© 2023 Matt Berger
Melica subulata
© 2023 Matt Berger

Melica torreyana    Torrey melic,  Torrey's melica,  Torrey's melicgrass
native
Perennial grass

POACEAE

Melica torreyana
© 2021 Dee Shea Himes
Melica torreyana
© 2019 John Rawlings
Melica torreyana
© 2023 Diana Wahl

Melissa officinalis    Bee balm,  Common balm,  Lemon balm
non-native
Perennial herb

LAMIACEAE

Melissa officinalis
© 2022 R.A. Chasey
Melissa officinalis
© 2021 R.A. Chasey
Melissa officinalis
© 2021 Cara Wilcox

Mentha pulegium    Pennyroyal
invasive non-native
Perennial herb

LAMIACEAE

Mentha pulegium
© 2023 R.A. Chasey
Mentha pulegium
© 2022 R.A. Chasey
Mentha pulegium
© 2015 Chris Jaster

Mimulus aurantiacus    Orange Bush Monkeyflower
native
Shrub

PHRYMACEAE

Mimulus aurantiacus
© 2024 Steve Conger
Mimulus aurantiacus
© 2024 Steve Conger
Mimulus aurantiacus
© 2019 Mary Gerbic

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

Mimulus congdonii    Congdon's monkeyflower
native
Annual herb

PHRYMACEAE

Mimulus congdonii
© 2006 Steve Matson
Mimulus congdonii
© 2024 R.A. Chasey
Mimulus congdonii
© 2024 Mike Russler

Mimulus douglasii    Purple mouse ears
native
Annual herb

PHRYMACEAE

Mimulus douglasii
© 2023 Timothy Boomer
Mimulus douglasii
© 2023 Timothy Boomer
Mimulus douglasii
© 2023 Timothy Boomer

Mimulus guttatus    Seep monkey flower,  Yellow monkey flower
native
Annual, Perennial herb (rhizomatous)

PHRYMACEAE

Mimulus guttatus
© 2019 Stacie Wolny
Mimulus guttatus
© 2015 James Gonsman
Mimulus guttatus
© 2019 Stacie Wolny

Mimulus kelloggii    Kellogg's monkeyflower
native
Annual herb

PHRYMACEAE

Mimulus kelloggii
© 2016 Steve Matson
Mimulus kelloggii
© 2005 Steve Matson
Mimulus kelloggii
© 2016 Steve Matson

Mimulus moschatus    Musk monkeyflower
native
Perennial herb

PHRYMACEAE

Mimulus moschatus
© 2014 James Gonsman
Mimulus moschatus
© 2019 Matt Berger
Mimulus moschatus
© 2018 Julie Kierstead Nelson

Minuartia douglasii    Douglas' Stitchwort
native
Annual herb

CARYOPHYLLACEAE

Minuartia douglasii
© 2022 Steve Matson
Minuartia douglasii
© 2019 Stacie Wolny
Minuartia douglasii
© 2021 R.A. Chasey

Monardella viridis    Green monardella
rare native
Perennial herb

LAMIACEAE

Monardella viridis
© 2019 R.A. Chasey
Monardella viridis
© 2020 Paul Aigner
Monardella viridis
© 2020 Paul Aigner

Montia fontana    Annual water minerslettuce,  Water chickweed,  Water montia
native
Annual herb

MONTIACEAE

Montia fontana
© 2006 Steve Matson
Montia fontana
© 2021 Steve Matson
Montia fontana
© 2006 Steve Matson

Montia parvifolia    Littleleaf minerslettuce,  Showy rock montia
native
Perennial herb

MONTIACEAE

Montia parvifolia
© 2023 Steve Conger
Montia parvifolia
© 2017 Steve Matson
Montia parvifolia
© 2017 Steve Matson

Myosotis discolor    Changing forget me not,  yellow and blue forget-me-not
non-native
Annual herb

BORAGINACEAE

Myosotis discolor
© 2017 Ron Vanderhoff
Myosotis discolor
© 2023 Donald Burk
Myosotis discolor
© 2019 David Greenberger

Nassella cernua    Nodding needle grass
native
Perennial grass

POACEAE

Nassella cernua
© 2018 Liz Block
Nassella cernua
© 2022 Ron Vanderhoff
Nassella cernua
© 2022 Dianne Lake

Nassella lepida    Foothill needle grass
native
Perennial grass

POACEAE

Nassella lepida
© 2017 Gary McDonald
Nassella lepida
© 2023 Ron Vanderhoff
Nassella lepida
© 2024 Mel Letterman

Nassella pulchra    Purple needle grass
native
Perennial grass

POACEAE

Nassella pulchra
© 2019 Michelle Karle
Nassella pulchra
© 2008 Zoya Akulova
Nassella pulchra
© 2019 Ron Vanderhoff

Navarretia leucocephala ssp. leucocephala    White headed navarretia,  Whitehead navarretia
native
Annual herb

POLEMONIACEAE

Navarretia leucocephala ssp. leucocephala
© 2022 Steve Matson
Navarretia leucocephala ssp. leucocephala
© 2022 Steve Matson
Navarretia leucocephala ssp. leucocephala
© 2022 Steve Matson

Navarretia squarrosa    Skunkbush,  Skunkweed
native
Annual herb

POLEMONIACEAE

Navarretia squarrosa
© 2024 Mike Russler
Navarretia squarrosa
© 2019 Patrick Furtado
Navarretia squarrosa
© 2022 Suzanne L. Weakley

Nemophila heterophylla    Canyon nemophila,  Small baby blue eyes,  Variable leaved nemophila
native
Annual herb

HYDROPHYLLACEAE

Nemophila heterophylla
© 2006 Steve Matson
Nemophila heterophylla
© 2005 Steve Matson
Nemophila heterophylla
© 2005 Steve Matson

Nemophila menziesii var. atomaria    Baby blue eyes
native
Annual herb

HYDROPHYLLACEAE

Nemophila menziesii var. atomaria
© 2021 Steve Matson
Nemophila menziesii var. atomaria
© 2021 Steve Matson
Nemophila menziesii var. atomaria
© 2021 Steve Matson

native
Annual herb

HYDROPHYLLACEAE

Nemophila menziesii var. menziesii
© 2021 Steve Matson
Nemophila menziesii var. menziesii
© 2021 Steve Matson
Nemophila menziesii var. menziesii
© 2005 Steve Matson

Oenanthe sarmentosa    Pacific oenanthe,  Water parsley
native
Perennial herb

APIACEAE

Oenanthe sarmentosa
© 2021 Don Hollander
Oenanthe sarmentosa
© 2021 Ron Vanderhoff
Oenanthe sarmentosa
© 2021 Rosaleen

Orobanche bulbosa    Chaparral broomrape
native
Perennial herb (parasitic)

OROBANCHACEAE

Orobanche bulbosa
© 2022 Hunter Breck
Orobanche bulbosa
© 2019 David Greenberger
Orobanche bulbosa
© 2022 R.A. Chasey

Osmorhiza chilensis    Sweet cicely
native
Perennial herb

APIACEAE

Osmorhiza chilensis
© 2006 Steve Matson
Osmorhiza chilensis
© 2006 Steve Matson
Osmorhiza chilensis
© 2006 Steve Matson

Parentucellia viscosa    Yellow glandweed,  Yellow parentucellia
invasive non-native
Annual herb

OROBANCHACEAE

Parentucellia viscosa
© 2021 Janice Kuch
Parentucellia viscosa
© 2018 Parker Santiago
Parentucellia viscosa
© 2021 Mike Russler

Paspalum dilatatum    Dallis grass,  Dallisgrass
non-native
Perennial grass

POACEAE

Paspalum dilatatum
© 2024 David popp
Paspalum dilatatum
© 2024 David popp
Paspalum dilatatum
© 2021 Ron Vanderhoff

Pellaea andromedifolia    Coffee cliffbrake,  Coffee fern
native
Fern

PTERIDACEAE

Pellaea andromedifolia
© 2023 Steve Conger
Pellaea andromedifolia
© 2021 Steve Matson
Pellaea andromedifolia
© 2021 Mike Russler

native
Perennial herb

PLANTAGINACEAE

Penstemon heterophyllus var. heterophyllus
© 2019 David Greenberger
Penstemon heterophyllus var. heterophyllus
© 2012 Gary McDonald
Penstemon heterophyllus var. heterophyllus
© 2021 Helen Hancock

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

Perideridia kelloggii    Kellogg's yampah,  Yampah
native
Perennial herb

APIACEAE

Perideridia kelloggii
© 2022 Suzanne L. Weakley
Perideridia kelloggii
© 2023 Ryan O'Dell
Perideridia kelloggii
© 2022 R.A. Chasey

Petrorhagia nanteuilii    Proliferous pink,  Tubercle seeded pink grass
non-native
Annual herb

CARYOPHYLLACEAE

Petrorhagia nanteuilii
© 2005 George W. Hartwell
Petrorhagia nanteuilii
© 2007 Neal Kramer

Phacelia californica    California phacelia,  Phacelia,  Rock phacelia
native
Perennial herb

HYDROPHYLLACEAE

Phacelia californica
© 2024 Eliezer Margolis
Phacelia californica
© 2022 Christine Kelly
Phacelia californica
© 2020 R.A. Chasey

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

Phacelia imbricata ssp. imbricata    Imbricate Phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia imbricata ssp. imbricata
© 2019 Steve Matson
Phacelia imbricata ssp. imbricata
© 2019 Steve Matson
Phacelia imbricata ssp. imbricata
© 2019 Steve Matson

Phalaris aquatica    Bulbous canarygrass,  Harding grass
invasive non-native
Perennial grass

POACEAE

Phalaris aquatica
© 2024 Michael Chasse
Phalaris aquatica
© 2021 Lenihan Mazur
Phalaris aquatica
© 2024 John Rawlings

Phlox gracilis    Slender phlox
native
Annual herb

POLEMONIACEAE

Phlox gracilis
© 2003 Steve Matson
Phlox gracilis
© 2016 Steve Matson
Phlox gracilis
© 2003 Steve Matson

Phoradendron villosum    Mistletoe
native
Shrub (parasitic)

VISCACEAE

Phoradendron villosum
© 2022 David popp
Phoradendron villosum
© 2020 R.A. Chasey
Phoradendron villosum
© 2021 R.A. Chasey

Pickeringia montana    Montana chaparral pea
native
Shrub

FABACEAE

Pickeringia montana
© 2019 Stacie Wolny
Pickeringia montana
© 2022 Ron Vanderhoff
Pickeringia montana
© 2021 Ron Vanderhoff

Pinus sabiniana    Bull pine,  California foothill pine,  Gray pine
native
Tree

PINACEAE

Pinus sabiniana
© 2022 Cynthia Powell
Pinus sabiniana
© 2019 Cynthia Powell
Pinus sabiniana
© 2021 R.A. Chasey

Piperia elegans    Coast piperia,  Elegant piperia,  Elegant rein orchid
native
Perennial herb

ORCHIDACEAE

Piperia elegans
© 2023 Steve Conger
Piperia elegans
© 2018 Alexandra Kookootsedes
Piperia elegans
© 2022 Hunter Breck

Piperia elongata    Dense flowered rein orchid,  Denseflower rein orchid
native
Perennial herb

ORCHIDACEAE

Piperia elongata
© 2007 Keir Morse
Piperia elongata
© 2007 Keir Morse
Piperia elongata
© 2021 Roy West

Piperia transversa    Mountain piperia,  Royal rein orchid,  Flat Spurred Piperia
native
Perennial herb

ORCHIDACEAE

Piperia transversa
© 2015 Steve Matson
Piperia transversa
© 2015 Steve Matson
Piperia transversa
© 2019 Timothy Boomer | WildMacro.com

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

Plagiobothrys nothofulvus    Rusty haired popcorn flower,  Rusty popcorn flower,  Rusty popcornflower
native
Annual herb

BORAGINACEAE

Plagiobothrys nothofulvus
© 2011 Steve Matson
Plagiobothrys nothofulvus
© 2011 Steve Matson
Plagiobothrys nothofulvus
© 2015 Steve Matson

Plantago erecta    California plantain,  Dotseed plantain,  Foothill plantain
native
Annual herb

PLANTAGINACEAE

Plantago erecta
© 2008 Steve Matson
Plantago erecta
© 2022 Steve Matson
Plantago erecta
© 2022 Steve Matson

Plantago lanceolata    English plantain,  Narrow leaved plantain,  Ribgrass
invasive non-native
Perennial herb

PLANTAGINACEAE

Plantago lanceolata
© 2008 Steve Matson
Plantago lanceolata
© 2019 Joe Engelbrecht
Plantago lanceolata
© 2021 Ken Lunders

Plectritis brachystemon    Shortspur seablush
native
Annual herb

VALERIANACEAE

Plectritis brachystemon
© 2023 Catherine Chang
Plectritis brachystemon
© 2005 Steve Matson
Plectritis brachystemon
© 2018 Gail Johnson

Poa annua    Annual blue grass,  Annual bluegrass
non-native
Annual grass

POACEAE

Poa annua
© 2021 Ron Vanderhoff
Poa annua
© 2022 John Rawlings
Poa annua
© 2015 Richard Chasey

Poa bulbosa    Bulbous blue grass,  Bulbous bluegrass
non-native
Perennial grass

POACEAE

Poa bulbosa
© 2020 Julie A. Kierstead
Poa bulbosa
© 2019 Stephany Dery
Poa bulbosa
© 2020 Thomas Reyes

Poa secunda ssp. secunda    One sided blue grass,  Pine bluegrass,  Sandberg's bluegrass
native
Perennial grass

POACEAE

Poa secunda ssp. secunda
© 2018 Ron Vanderhoff
Poa secunda ssp. secunda
© 2018 Ron Vanderhoff
Poa secunda ssp. secunda
© 2018 Ron Vanderhoff

Poa trivialis    Rough blue grass,  Rough bluegrass
non-native
Perennial grass

POACEAE

Poa trivialis
© 2006 Greta Murdoff

Polygala californica    California Milkwort
native
Perennial herb

POLYGALACEAE

Polygala californica
© 2020 Janice Kuch
Polygala californica
© 2021 Larry Dizmang
Polygala californica
© 2020 David Wolfson

Polygonum arenastrum    Prostrate knotweed
non-native
Annual, Perennial herb

POLYGONACEAE

Polygonum arenastrum
© 2016 Barbara Boethling
Polygonum arenastrum
© 2021 Ron Vanderhoff
Polygonum arenastrum
© 2014 Richard Chasey

Polygonum hydropiper    Common smartweed
non-native
Annual herb

POLYGONACEAE

Polygonum hydropiper
© 2009 Gerald Carr
Polygonum hydropiper
© 2009 Gerald Carr
Polygonum hydropiper
© 2009 Gerald Carr

Polypodium californicum    California polypody
native
Fern

POLYPODIACEAE

Polypodium californicum
© 2020 Ron Vanderhoff
Polypodium californicum
© 2021 Ron Vanderhoff
Polypodium californicum
© 2023 Keir Morse

Polypodium glycyrrhiza    Licorice fern
native
Fern

POLYPODIACEAE

Polypodium glycyrrhiza
© 2014 BOB CASE
Polypodium glycyrrhiza
© 2022 Mary Conway
Polypodium glycyrrhiza
© 2014 BOB CASE

Polypogon monspeliensis    Annual beard grass,  Rabbitsfoot grass
invasive non-native
Annual grass

POACEAE

Polypogon monspeliensis
© 2008 Steve Matson
Polypogon monspeliensis
© 2014 Steve Matson
Polypogon monspeliensis
© 2008 Steve Matson

Polystichum munitum    Western sword fern,  Western swordfern
native
Fern

DRYOPTERIDACEAE

Polystichum munitum
© 2021 Julie A. Kierstead
Polystichum munitum
© 2022 Jerry Murray
Polystichum munitum
© 2011 Toni Corelli

Potentilla glandulosa ssp. glandulosa    Sticky cinquefoil
native
Perennial herb

ROSACEAE

Potentilla glandulosa ssp. glandulosa
© 2017 Steve Matson
Potentilla glandulosa ssp. glandulosa
© 2017 Steve Matson
Potentilla glandulosa ssp. glandulosa
© 2021 Ron Vanderhoff

Prunus cerasifera    Cherry plum
invasive non-native
Tree

ROSACEAE

Prunus cerasifera
© 2025 Mike Russler
Prunus cerasifera
© 2025 Mike Russler
Prunus cerasifera
© 2025 Mike Russler

Prunus virginiana var. demissa    Chokecherry,  Western choke cherry,  Western chokecherry
native
Tree, Shrub

ROSACEAE

Prunus virginiana var. demissa
© 2005 Steve Matson
Prunus virginiana var. demissa
© 2005 Steve Matson
Prunus virginiana var. demissa
© 2020 Susan McDougall

Pseudotsuga menziesii var. menziesii    Douglas fir,  Douglas spruce,  False hemlock
native
Tree

PINACEAE

Pseudotsuga menziesii var. menziesii
© 2020 David Krause
Pseudotsuga menziesii var. menziesii
© 2022 David popp
Pseudotsuga menziesii var. menziesii
© 2024 David popp

Psilocarphus tenellus var. tenellus    Slender woolly marbles,  Slender woollyheads
native
Annual herb

ASTERACEAE

Psilocarphus tenellus var. tenellus
© 2006 Steve Matson
Psilocarphus tenellus var. tenellus
© 2006 Steve Matson
Psilocarphus tenellus var. tenellus
© 2018 Ron Vanderhoff

Pteridium aquilinum var. pubescens    Hairy brackenfern,  Western bracken fern
native
Fern

DENNSTAEDTIACEAE

Pteridium aquilinum var. pubescens
© 2019 Ron Vanderhoff
Pteridium aquilinum var. pubescens
© 2019 Ron Vanderhoff
Pteridium aquilinum var. pubescens
© 2022 Bob Sweatt

Quercus agrifolia var. agrifolia    California live oak,  Coast live oak
native
Tree

FAGACEAE

Quercus agrifolia var. agrifolia
© 2023 Ron Vanderhoff
Quercus agrifolia var. agrifolia
© 2022 Ron Vanderhoff
Quercus agrifolia var. agrifolia
© 2021 Al Keuter

Quercus berberidifolia    Inland scrub oak
native
Tree

FAGACEAE

Quercus berberidifolia
© 2022 David Strauch
Quercus berberidifolia
© 2024 Mike Russler
Quercus berberidifolia
© 2022 David Strauch

Quercus chrysolepis    Canyon live oak,  Canyon oak, maul oak, goldcup oak,  Gold cup oak
native
Tree

FAGACEAE

Quercus chrysolepis
© 2017 Aaron Sunshine
Quercus chrysolepis
© 2020 R.A. Chasey
Quercus chrysolepis
© 2018 joaquin hale

Quercus durata var. durata    Leather oak
native
Shrub

FAGACEAE

Quercus durata var. durata
© 2022 Ryan O'Dell
Quercus durata var. durata
© 2020 Charles Russell
Quercus durata var. durata
© 2023 Emma Shelton

Quercus garryana var. garryana    Oregon oak,  Oregon white oak
native
Tree

FAGACEAE

Quercus garryana var. garryana
© 2023 Michele Hammond
Quercus garryana var. garryana
© 2021 R.A. Chasey
Quercus garryana var. garryana
© 2021 R.A. Chasey

Quercus kelloggii    Black oak,  California black oak
native
Tree

FAGACEAE

Quercus kelloggii
© 2020 Kim Cabrera
Quercus kelloggii
© 2021 Emily Sluiman
Quercus kelloggii
© 2023 Ryan O'Dell

Quercus wislizenii var. frutescens    Interior live oak,  chapparal oak
native
Tree, Shrub

FAGACEAE

Quercus wislizenii var. frutescens
© 2019 Ron Vanderhoff
Quercus wislizenii var. frutescens
© 2019 Ron Vanderhoff
Quercus wislizenii var. frutescens
© 2025 Mike Russler

Ranunculus californicus    California buttercup
native
Perennial herb

RANUNCULACEAE

Ranunculus californicus
© 2016 Steve Matson
Ranunculus californicus
© 2016 Steve Matson
Ranunculus californicus
© 2016 Steve Matson

Ranunculus muricatus    Buttercup,  Pricklefruit buttercup,  Spiny buttercup
non-native
Annual, Perennial herb

RANUNCULACEAE

Ranunculus muricatus
© 2023 R.A. Chasey
Ranunculus muricatus
© 2023 Alaine Arslan
Ranunculus muricatus
© 2009 Julie A. Kierstead

Rhagadiolus stellatus    Endive daisy
non-native
Annual herb

ASTERACEAE

Rhagadiolus stellatus
© 2022 Emily R. Allen
Rhagadiolus stellatus
© 2017 William Miller
Rhagadiolus stellatus
© 2020 Naftali Moed

Rhamnus californica    California coffeeberry
native
Shrub

RHAMNACEAE

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

Rhamnus crocea    Redberry buckthorn
native
Shrub

RHAMNACEAE

Rhamnus crocea
© 2011 Michael Mitchell
Rhamnus crocea
© 2022 Ron Vanderhoff
Rhamnus crocea
© 2019 Ron Vanderhoff

Ribes roezlii var. cruentum    Sierra gooseberry,  Spiny fruited gooseberry
native
Shrub

GROSSULARIACEAE

Ribes roezlii var. cruentum
© 2021 Steve Matson
Ribes roezlii var. cruentum
© 2021 Steve Matson
Ribes roezlii var. cruentum
© 2021 Steve Matson

Rorippa nasturtium-aquat    Small Tree-Mallow


Rosa gymnocarpa    Dwarf rose,  Baldhip rose
native
Shrub

ROSACEAE

Rosa gymnocarpa
© 2022 Linnea vonAhn
Rosa gymnocarpa
© 2012 Michael Mitchell
Rosa gymnocarpa
© 2017 David popp

Rubus armeniacus    Himalayan blackberry,  black berry,  Armenian blackberry
invasive non-native
Shrub

ROSACEAE

Rubus armeniacus
© 2014 James Gonsman
Rubus armeniacus
© 2018 Richard Spjut
Rubus armeniacus
© 2013 Michael Mitchell

Rubus parviflorus    Western thimbleberry,  Thimbleberry
native
Vine, Shrub

ROSACEAE

Rubus parviflorus
© 2022 Zoya Akulova-Barlow
Rubus parviflorus
© 2020 Mary Sue Ittner
Rubus parviflorus
© 2018 Abbot Chambers

Rubus ursinus    California blackberry,  Pacific blackberry
native
Vine, Shrub

ROSACEAE

Rubus ursinus
© 2018 Ken Lunders
Rubus ursinus
© 2019 Ron Vanderhoff
Rubus ursinus
© 2015 Kelli Kallenborn

Rumex acetosella    Common sheep sorrel
invasive non-native
Perennial herb

POLYGONACEAE

Rumex acetosella
© 2017 Gary McDonald
Rumex acetosella
© 2008 Steve Matson
Rumex acetosella
© 2019 Patrick Furtado

Rumex crispus    Curly dock,  Curly leaved dock,  Rhubarb
invasive non-native
Perennial herb

POLYGONACEAE

Rumex crispus
© 2018 Tim Lewis
Rumex crispus
© 2019 Diane Etchison
Rumex crispus
© 2023 Ron Vanderhoff

Rumex pulcher    Fiddle dock
non-native
Perennial herb

POLYGONACEAE

Rumex pulcher
© 2020 Ryan Carle
Rumex pulcher
© 2022 Chris McDonald
Rumex pulcher
© 2021 David popp

Rumex salicifolius var. salicifolius    Willow dock,  Willow leaved dock
native
Perennial herb

POLYGONACEAE

Rumex salicifolius var. salicifolius
© 2023 Ron Vanderhoff
Rumex salicifolius var. salicifolius
© 2023 Ron Vanderhoff
Rumex salicifolius var. salicifolius
© 2023 Helen Hancock

Rupertia physodes    California tea,  Common rupertia,  Forest scurfpea
native
Perennial herb

FABACEAE

Rupertia physodes
© 2021 Mary Ann Machi
Rupertia physodes
© 2023 Steve Conger
Rupertia physodes
© 2020 R.A. Chasey

Salix lasiolepis    Arroyo willow
native
Tree, Shrub

SALICACEAE

Salix lasiolepis
© 2019 Steve Matson
Salix lasiolepis
© 2022 Ron Vanderhoff
Salix lasiolepis
© 2020 Steve Matson

Salvia columbariae    Chia sage
native
Annual herb

LAMIACEAE

Salvia columbariae
© 2020 Ron Vanderhoff
Salvia columbariae
© 2022 Mike Russler
Salvia columbariae
© 2022 Mike Russler

Sambucus mexicana    Blue elderberry
native
Tree, Shrub

VIBURNACEAE

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

Sanicula bipinnatifida    Purple sanicle,  Snakeroot,  Purple Sanicle, Shoe Buttons
native
Perennial herb

APIACEAE

Sanicula bipinnatifida
© 2019 Diane Etchison
Sanicula bipinnatifida
© 2018 Gary McDonald
Sanicula bipinnatifida
© 2021 Robin Carter

Sanicula crassicaulis    Gamble weed,  Pacific blacksnakeroot,  Pacific sanicle
native
Perennial herb

APIACEAE

Sanicula crassicaulis
© 2023 Steve Conger
Sanicula crassicaulis
© 2023 Steve Conger
Sanicula crassicaulis
© 2021 Steve Laymon

Sanicula laciniata    Coast sanicle,  Coastal blacksnakeroot
native
Perennial herb

APIACEAE

Sanicula laciniata
© 2022 Alice Cummings
Sanicula laciniata
© 2020 Mary Conway
Sanicula laciniata
© 2018 Ken Hickman

Saxifraga californica    Greene's saxifrage
native
Perennial herb

SAXIFRAGACEAE

Saxifraga californica
© 2016 Steve Matson
Saxifraga californica
© 2016 Steve Matson
Saxifraga californica
© 2016 Steve Matson

Scandix pecten-veneris    Shepherd's needle,  Shepherdsneedle,  Venus' needle
non-native
Annual herb, Vine

APIACEAE

Scandix pecten-veneris
© 2006 Steve Matson
Scandix pecten-veneris
© 2018 Stacie Wolny
Scandix pecten-veneris
© 2024 Ron Vanderhoff

Scrophularia californica ssp. californica    California bee plant,  California figwort
native
Perennial herb

SCROPHULARIACEAE

Scrophularia californica ssp. californica
© 2020 Bob Sweatt
Scrophularia californica ssp. californica
© 2006 Steve Matson
Scrophularia californica ssp. californica
© 2019 Cynthia Powell

Scutellaria californica    California skullcap
native
Perennial herb

LAMIACEAE

Scutellaria californica
© 2016 Steve Matson
Scutellaria californica
© 2020 Bob Sweatt
Scutellaria californica
© 2022 Ken-ichi Ueda

Selaginella wallacei    Wallace moss fern,  Wallace's spike moss,  Wallace's spikemoss
Selaginella wallacei
© 2011 Steve Matson
Selaginella wallacei
© 2011 Steve Matson
Selaginella wallacei
© 2025 Mary Ann Machi

Senecio vulgaris    Common groundsel,  Old man in the spring,  Old man of spring
non-native
Annual herb

ASTERACEAE

Senecio vulgaris
© 2017 Barbara Boethling
Senecio vulgaris
© 2023 Ron Vanderhoff
Senecio vulgaris
© 2021 Toni Corelli

Sequoia sempervirens    Coast redwood
native
Tree

CUPRESSACEAE

Sequoia sempervirens
© 2019 Patrick Furtado
Sequoia sempervirens
© 2022 David Strauch
Sequoia sempervirens
© 2019 R.A. Chasey

Sidalcea diploscypha    Fringed checker mallow,  Fringed checkerbloom,  Fringed sidalcea
native
Annual herb

MALVACEAE

Sidalcea diploscypha
© 2022 William Lundgren
Sidalcea diploscypha
© 2016 Jennifer Wheeler
Sidalcea diploscypha
© 2021 Cynthia Powell

Silene californica    California indian pink
native
Perennial herb

CARYOPHYLLACEAE

Silene californica
© 2021 Timothy Boomer | WildMacro.com
Silene californica
© 2020 Kim Cabrera
Silene californica
© 2019 Zachary Snider

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

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

Smilacina stellata    Starry false lily of the valley
native
Perennial herb

RUSCACEAE

Smilacina stellata
© 2003 Steve Matson
Smilacina stellata
© 2003 Steve Matson
Smilacina stellata
© 2003 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

Solidago californica    California goldenrod,  Oreja de liebre
native
Perennial herb

ASTERACEAE

Solidago californica
© 2013 Steve Matson
Solidago californica
© 2008 Steve Matson
Solidago californica
© 2008 Steve Matson

Sonchus asper ssp. asper    Prickly sow thistle,  Sow thistle
invasive non-native
Annual herb

ASTERACEAE

Sonchus asper ssp. asper
© 2014 Gary McDonald
Sonchus asper ssp. asper
© 2022 Ron Vanderhoff
Sonchus asper ssp. asper
© 2014 Gary McDonald

Sonchus oleraceus    Common sow thistle,  Common sowthistle,  Sow thistle
non-native
Annual herb

ASTERACEAE

Sonchus oleraceus
© 2019 Diane Etchison
Sonchus oleraceus
© 2015 Jesse Rorabaugh
Sonchus oleraceus
© 2024 Ron Vanderhoff

non-native
Annual herb

CARYOPHYLLACEAE

Spergula arvensis ssp. arvensis
© 2019 Diane Etchison
Spergula arvensis ssp. arvensis
© 2022 David Strauch
Spergula arvensis ssp. arvensis
© 2022 Cynthia Powell

Spergularia rubra    Purple sand spurry,  Red sandspurry,  Ruby sandspurry
non-native
Annual, Perennial herb

CARYOPHYLLACEAE

Spergularia rubra
© 2023 Ron Vanderhoff
Spergularia rubra
© 2023 Ron Vanderhoff
Spergularia rubra
© 2023 Ron Vanderhoff

Stachys ajugoides var. rigida    Mexican hedgenettle
native
Perennial herb

LAMIACEAE

Stachys ajugoides var. rigida
© 2016 Steve Matson
Stachys ajugoides var. rigida
© 2016 Steve Matson
Stachys ajugoides var. rigida
© 2016 Steve Matson

Stachys albens    Cobwebby hedge nettle,  White hedge nettle,  Whitestem hedgenettle
native
Perennial herb

LAMIACEAE

Stachys albens
© 2013 Steve Matson
Stachys albens
© 2013 Steve Matson
Stachys albens
© 2013 Steve Matson

Stellaria media    Chickweed
non-native
Annual herb

CARYOPHYLLACEAE

Stellaria media
© 2018 Gary McDonald
Stellaria media
© 2018 Gary McDonald
Stellaria media
© 2015 Diane Etchison

Stellaria nitens    Shining chickweed,  Shiny chickweed,  Smooth chickweed
native
Annual herb

CARYOPHYLLACEAE

Stellaria nitens
© 2022 Catherine Chang
Stellaria nitens
© 2023 Ron Vanderhoff
Stellaria nitens
© 2020 Ken Hickman

Stephanomeria exigua ssp. coronaria    Milk aster,  White plume wirelettuce,  Whiteplume wirelettuce
native
Annual herb

ASTERACEAE

Stephanomeria exigua ssp. coronaria
© 2024 Mike Russler
Stephanomeria exigua ssp. coronaria
© 2024 Mike Russler
Stephanomeria exigua ssp. coronaria
© 2023 Ryan O'Dell

native
Annual herb

BRASSICACEAE

Streptanthus glandulosus ssp. glandulosus
© 2003 Keir Morse
Streptanthus glandulosus ssp. glandulosus
© 2020 Stacie Wolny
Streptanthus glandulosus ssp. glandulosus
© 2021 Bryant Baker

Symphoricarpos albus var. laevigatus    Common snowberry,  Upright snowberry,  Snowberry
native
Shrub

CAPRIFOLIACEAE

Symphoricarpos albus var. laevigatus
© 2020 Jacob Smith
Symphoricarpos albus var. laevigatus
© 2020 Jacob Smith
Symphoricarpos albus var. laevigatus
© 2021 Mike Russler

Taeniatherum caput-medusae    Medusa head
invasive non-native
Annual grass

POACEAE

Taeniatherum caput-medusae
© 2023 Ron Vanderhoff
Taeniatherum caput-medusae
© 2019 Jennifer Mo
Taeniatherum caput-medusae
© 2011 Steve Matson

Taraxacum officinale    Common dandelion,  Dandelion,  Red seeded dandelion
invasive non-native
Perennial herb

ASTERACEAE

Taraxacum officinale
© 2021 Ron Vanderhoff
Taraxacum officinale
© 2019 Diane Etchison
Taraxacum officinale
© 2021 Ron Vanderhoff

Thysanocarpus curvipes    Fringe pod,  Fringed pod,  Hairy lacepod
native
Annual herb

BRASSICACEAE

Thysanocarpus curvipes
© 2019 Steve Matson
Thysanocarpus curvipes
© 2014 Steve Matson
Thysanocarpus curvipes
© 2016 Steve Matson

Torilis arvensis    Field hedge parsley,  Spreading hedgeparsley,  Tall Sock-Destroyer
invasive non-native
Annual herb

APIACEAE

Torilis arvensis
© 2019 Ron Vanderhoff
Torilis arvensis
© 2017 Gary McDonald
Torilis arvensis
© 2018 Lindsey Hack

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

ANACARDIACEAE

Toxicodendron diversilobum
© 2020 Ron Vanderhoff
Toxicodendron diversilobum
© 2019 Randy Huey
Toxicodendron diversilobum
© 2025 Mike Russler

Tragopogon porrifolius    Purple salsify
non-native
Perennial herb

ASTERACEAE

Tragopogon porrifolius
© 2019 Julie dinsdale
Tragopogon porrifolius
© 2015 David Wolfson
Tragopogon porrifolius
© 2020 Martin Cooper

Trientalis latifolia    Pacific starflower
native
Perennial herb

MYRSINACEAE

Trientalis latifolia
© 2008 Steve Matson
Trientalis latifolia
© 2016 Steve Matson
Trientalis latifolia
© 2024 Ben Spencer-Cooke

Trifolium albopurpureum var. dichotomum    Branched indian clover
native
Annual herb

FABACEAE

Trifolium albopurpureum var. dichotomum
© 2023 Helen Hancock
Trifolium albopurpureum var. dichotomum
© 2022 Helen Hancock
Trifolium albopurpureum var. dichotomum
© 2023 Helen Hancock

Trifolium bifidum var. decipiens    Notch leaf clover
native
Annual herb

FABACEAE

Trifolium bifidum var. decipiens
© 2022 R.A. Chasey
Trifolium bifidum var. decipiens
© 2024 R.A. Chasey
Trifolium bifidum var. decipiens
© 2021 Cameron Chabre

Trifolium campestre    Field clover,  Low hop clover
non-native
Annual herb

FABACEAE

Trifolium campestre
© 2024 R.A. Chasey
Trifolium campestre
© 2023 R.A. Chasey
Trifolium campestre
© 2021 R.A. Chasey

Trifolium ciliolatum    Foothill clover,  Tree clover
native
Annual herb

FABACEAE

Trifolium ciliolatum
© 2005 Steve Matson
Trifolium ciliolatum
© 2005 Steve Matson
Trifolium ciliolatum
© 2019 Rachelle Gray

Trifolium depauperatum var. depauperatum    Cowbag clover,  Dwarf bladder clover,  Dwarf sack clover
native
Annual herb

FABACEAE

Trifolium depauperatum var. depauperatum
© 2021 Steve Matson
Trifolium depauperatum var. depauperatum
© 2021 Steve Matson
Trifolium depauperatum var. depauperatum
© 2023 R.A. Chasey

Trifolium dubium    Shamrock clover,  Little Hop Clover,  Suckling clover
non-native
Annual herb

FABACEAE

Trifolium dubium
© 2018 Stacie Wolny
Trifolium dubium
© 2022 Dana York
Trifolium dubium
© 2017 MCOSD EDRR

Trifolium fragiferum    Strawberry clover
non-native
Perennial herb

FABACEAE

Trifolium fragiferum
© 2020 Ron Vanderhoff
Trifolium fragiferum
© 2020 Ron Vanderhoff
Trifolium fragiferum
© 2023 R.A. Chasey

Trifolium hirtum    Rose clover
invasive non-native
Annual herb

FABACEAE

Trifolium hirtum
© 2011 Steve Matson
Trifolium hirtum
© 2011 Steve Matson
Trifolium hirtum
© 2011 Steve Matson

Trifolium microcephalum    Hairy clover,  Small headed clover
native
Annual herb

FABACEAE

Trifolium microcephalum
© 2005 Steve Matson
Trifolium microcephalum
© 2016 Michael Mitchell
Trifolium microcephalum
© 2019 Ron Vanderhoff

Trifolium microdon    Thimble clover,  Valparaiso clover
native
Annual herb

FABACEAE

Trifolium microdon
© 2022 Dee Shea Himes
Trifolium microdon
© 2023 R.A. Chasey
Trifolium microdon
© 2025 Bill Kress

Trifolium oliganthum    Few flowered clover,  Fewflower clover,  Minitomcat clover
native
Annual herb

FABACEAE

Trifolium oliganthum
© 2021 Mike Russler
Trifolium oliganthum
© 2022 Mary Merriman
Trifolium oliganthum
© 2023 R.A. Chasey

Trifolium striatum    Knotted clover
non-native
Annual herb

FABACEAE

Trifolium striatum
© 2023 R.A. Chasey
Trifolium striatum
© 2007 Keir Morse
Trifolium striatum
© 2023 Ellen Uhler

Trifolium subterraneum    Sub clover,  Subterranean clover
non-native
Annual herb

FABACEAE

Trifolium subterraneum
© 2017 Steve Matson
Trifolium subterraneum
© 2008 Steve Matson
Trifolium subterraneum
© 2024 Alaine Arslan

Trifolium variegatum    Variegated clover,  White tipped clover,  Whitetip clover
native
Annual herb

FABACEAE

Trifolium variegatum
© 2022 Steve Matson
Trifolium variegatum
© 2017 Michael Mitchell
Trifolium variegatum
© 2019 Diane Etchison

Trifolium willdenovii    Tomcat clover
native
Annual herb

FABACEAE

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

Trillium albidum    Giant white wakerobin
native
Perennial herb

MELANTHIACEAE

Trillium albidum
© 2019 Timothy Boomer
Trillium albidum
© 2022 Doug Zimmerman
Trillium albidum
© 2019 William Maslach

Trillium ovatum    Pacific trillium,  Wake robin,  Western trillium
native
Perennial herb

MELANTHIACEAE

Trillium ovatum
© 2017 Steve Matson
Trillium ovatum
© 2017 Steve Matson
Trillium ovatum
© 2017 Steve Matson

Triodanis biflora    Venus looking glass,  Venus' looking glass
native
Annual herb

CAMPANULACEAE

Triodanis biflora
© 2020 Ken Hickman
Triodanis biflora
© 2015 Hayley Ross
Triodanis biflora
© 2018 Ken Hickman

Triphysaria eriantha ssp. eriantha    Butter 'n' eggs,  Johnny tuck
native
Annual herb

OROBANCHACEAE

Triphysaria eriantha ssp. eriantha
© 2005 Steve Matson
Triphysaria eriantha ssp. eriantha
© 2021 Steve Matson
Triphysaria eriantha ssp. eriantha
© 2008 Steve Matson

Trisetum canescens    Nodding oatgrass,  Nodding trisetum,  Tall trisetum
native
Perennial grass

POACEAE

Trisetum canescens
© 2020 John Rawlings
Trisetum canescens
© 2024 R.A. Chasey
Trisetum canescens
© 2022 Ellen Uhler

Triteleia laxa    Ithuriel's spear
native
Perennial herb

THEMIDACEAE

Triteleia laxa
© 2018 Gary McDonald
Triteleia laxa
© 2018 Tim Lewis
Triteleia laxa
© 2019 Matt Berger

Triticum aestivum    Common wheat,  Wheat
non-native
Annual grass

POACEAE

Triticum aestivum
© 2022 Lenihan Mazur
Triticum aestivum
© 2021 John Rawlings
Triticum aestivum
© 2011 Toni Corelli

Typha domingensis    Narrowleaf cattail,  Southern cattail
native
Perennial herb

TYPHACEAE

Typha domingensis
© 2020 Ron Vanderhoff
Typha domingensis
© 2020 Ron Vanderhoff
Typha domingensis
© 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

Uropappus lindleyi    Silver puffs,  Uropappus
native
Annual herb

ASTERACEAE

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

Urtica dioica ssp. holosericea    Giant creek nettle,  Hoary nettle,  Mountain nettle
native
Perennial herb

URTICACEAE

Urtica dioica ssp. holosericea
© 2014 Steve Matson
Urtica dioica ssp. holosericea
© 2014 Steve Matson
Urtica dioica ssp. holosericea
© 2014 Steve Matson

Verbena lasiostachys    Common verbena,  Vervain,  Western verbena
native
Perennial herb

VERBENACEAE

Verbena lasiostachys
© 2010 Steve Matson
Verbena lasiostachys
© 2010 Steve Matson
Verbena lasiostachys
© 2010 Steve Matson

Vicia lutea    Smooth yellow vetch
non-native
Annual herb, Vine

FABACEAE

Vicia lutea
© 2019 Thomas Reyes
Vicia lutea
© 2022 Emily R. Allen
Vicia lutea
© 2022 Emily R. Allen

Vicia sativa ssp. sativa    Garden vetch,  Pubescent common vetch,  Spring vetch
non-native
Annual herb, Vine

FABACEAE

Vicia sativa ssp. sativa
© 2024 Mike Russler
Vicia sativa ssp. sativa
© 2023 Ron Vanderhoff
Vicia sativa ssp. sativa
© 2023 Ron Vanderhoff

Vicia villosa ssp. varia    Smooth vetch,  Thick fruited vetch,  Winter vetch
non-native
Annual herb, Vine

FABACEAE

Vicia villosa ssp. varia
© 2019 Gary McDonald
Vicia villosa ssp. varia
© 2017 Gary McDonald
Vicia villosa ssp. varia
© 2006 Steve Matson

Viola ocellata    Pinto violet,  Twoeyed violet,  Western heart's ease
native
Perennial herb

VIOLACEAE

Viola ocellata
© 2020 Amy Rapport
Viola ocellata
© 2008 Steve Matson
Viola ocellata
© 2018 Stacie Wolny

Vitis californica    California grape,  California wild grape
native
Vine, Shrub

VITACEAE

Vitis californica
© 2015 Bill Bogdanoff
Vitis californica
© 2013 Zoya Akulova
Vitis californica
© 2019 Jennifer Mo

Vulpia bromoides    Brome fescue
non-native
Annual grass

POACEAE

Vulpia bromoides
© 2022 Diana Wahl
Vulpia bromoides
© 2021 Toni Corelli
Vulpia bromoides
© 2021 David popp

Vulpia myuros var. hirsuta    Rattail sixweeks grass
invasive non-native
Annual grass

POACEAE

Vulpia myuros var. hirsuta
© 2021 Aaron Echols
Vulpia myuros var. hirsuta
© 2021 Ron Vanderhoff
Vulpia myuros var. hirsuta
© 2022 John Rawlings

Woodwardia fimbriata    Chain fern,  Giant chain fern,  Giant chainfern
native
Fern

BLECHNACEAE

Woodwardia fimbriata
© 2019 Julie Kierstead Nelson
Woodwardia fimbriata
© 2020 R.A. Chasey
Woodwardia fimbriata
© 2020 Julie A. Kierstead

Wyethia angustifolia    California compassplant,  Narrow leaf mule ears,  Narrow leaved mule ears
native
Perennial herb

ASTERACEAE

Wyethia angustifolia
© 2024 Alaine Arslan
Wyethia angustifolia
© 2021 R.A. Chasey
Wyethia angustifolia
© 2009 BOB CASE

Wyethia glabra    Coast range mule ears,  Shining mule ears,  Smooth mule ears
native
Perennial herb

ASTERACEAE

Wyethia glabra
© 2020 Julie A. Kierstead
Wyethia glabra
© 2022 R.A. Chasey
Wyethia glabra
© 2019 Colleen Herr

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
© 2021 Kristen Nelson

Zigadenus micranthus var. micranthus    Small flowered star lily
native
Perennial herb

MELANTHIACEAE

Zigadenus micranthus var. micranthus
© 2021 Steve Laymon
Zigadenus micranthus var. micranthus
© 2020 Susan McDougall
Zigadenus micranthus var. micranthus
© 2024 R.A. Chasey