logo Calflora  Illustrated Plant List 
Cosumnes River Preserve
Southern Sacramento Valley; I-5 to Twin Cities Rd., East Cosumnes River

Sacramento County

Anonymous  / G.F. Hrusa checklists  (1994-01-01)

Record Detail Nearby Surveys What Grows Here?
290 PLANTS
Abutilon theophrasti    Velvet leaf,  Velvetleaf
non-native
Annual herb

MALVACEAE

Abutilon theophrasti
© 2022 Morgan Stickrod
Abutilon theophrasti
© 2023 Donald Burk
Abutilon theophrasti
© 2023 Donald Burk

native
Tree

SAPINDACEAE

Acer negundo var. californicum
© 2019 Robert Sweet
Acer negundo var. californicum
© 2016 John H Malpas
Acer negundo var. californicum
© 2019 Ron Vanderhoff

Achyrachaena mollis    Blow-Wives
native
Annual herb

ASTERACEAE

Achyrachaena mollis
© 2015 Diane Etchison
Achyrachaena mollis
© 2022 Mike Russler
Achyrachaena mollis
© 2022 Mike Russler

Agrostis exarata    Spike bentgrass,  Spike redtop
native
Perennial grass

POACEAE

Agrostis exarata
© 2022 Teal Derrer
Agrostis exarata
© 2021 David popp
Agrostis exarata
© 2022 John Rawlings

Agrostis gigantea    Creeping bentgras,  Giant bentgrass,  Redtop
non-native
Perennial grass

POACEAE

Agrostis gigantea
© 2023 Dana York
Agrostis gigantea
© 2023 Dana York
Agrostis gigantea
© 2022 John Rawlings

Alisma plantago-aquatica    Northern water plantain
native
Perennial herb (aquatic)

ALISMATACEAE

Alisma plantago-aquatica
© 2023 Ken-ichi Ueda
Alisma plantago-aquatica
© 2022 R.A. Chasey
Alisma plantago-aquatica
© 2019 Gena Bentall

Alnus rhombifolia    White alder
native
Tree

BETULACEAE

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

Alopecurus carolinianus    Carolina foxtail
native
Annual grass

POACEAE

Alopecurus carolinianus
© 2019 David Greenberger
Alopecurus carolinianus
© 2019 David popp
Alopecurus carolinianus
© 2016 David popp

Amaranthus albus    Pigweed amaranth,  Tumbleweed
non-native
Annual herb

AMARANTHACEAE

Amaranthus albus
© 2014 Steve Matson
Amaranthus albus
© 2014 Steve Matson
Amaranthus albus
© 2018 Ron Vanderhoff

Amaranthus blitoides    Mat amaranth,  Prostrate amaranth,  Prostrate pigweed
native
Annual herb

AMARANTHACEAE

Amaranthus blitoides
© 2020 Ron Vanderhoff
Amaranthus blitoides
© 2023 Helen Hancock
Amaranthus blitoides
© 2019 Camille Nowell

Amaranthus palmeri    Carelessweed,  Palmer's amaranth
native
Annual herb

AMARANTHACEAE

Amaranthus palmeri
© 2020 Timothy Blank
Amaranthus palmeri
© 2018 Lynn Sosnoskie
Amaranthus palmeri
© 2018 Lynn Sosnoskie

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

Ammannia coccinea    Purple ammannia,  Red ammannia
native
Annual herb

LYTHRACEAE

Ammannia coccinea
© 2021 Jennifer Mo
Ammannia coccinea
© 2018 Ron Vanderhoff
Ammannia coccinea
© 2020 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
© 2022 Chris McDonald
Anagallis arvensis
© 2023 Ron Vanderhoff

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

Apocynum androsaemifolium    Bitter dogbane,  Spreading dogbane
native
Perennial herb

APOCYNACEAE

Apocynum androsaemifolium
© 2003 Steve Matson
Apocynum androsaemifolium
© 2003 Steve Matson
Apocynum androsaemifolium
© 2003 Steve Matson

Apocynum cannabinum    Indian hemp,  Indianhemp dogbane,  HEMP DOGBANE
native
Perennial herb

APOCYNACEAE

Apocynum cannabinum
© 2019 Ron Vanderhoff
Apocynum cannabinum
© 2015 Ron Vanderhoff
Apocynum cannabinum
© 2021 Mike Russler

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

Asclepias fascicularis    Narrow leaf milkweed
native
Perennial herb

APOCYNACEAE

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

non-native
Perennial herb

ASPARAGACEAE

Asparagus officinalis ssp. officinalis
© 2021 Robin Carter
Asparagus officinalis ssp. officinalis
© 1995 Saint Mary's College of California
Asparagus officinalis ssp. officinalis
© 2020 MCOSD EDRR

Aster chilensis    California aster,  Pacific aster
native
Perennial herb

ASTERACEAE

Aster chilensis
© 2020 Suzanne L. Weakley
Aster chilensis
© 2013 Arcangelo Wessells
Aster chilensis
© 2018 Stacie Wolny

Aster subulatus var. ligulatus    Eastern annual saltmarsh aster
native
Annual herb

ASTERACEAE

Aster subulatus var. ligulatus
© 2019 Ron Vanderhoff
Aster subulatus var. ligulatus
© 2018 Ron Vanderhoff
Aster subulatus var. ligulatus
© 2018 Ron Vanderhoff

Atriplex heterosperma    Twoscale saltbush
non-native
Annual herb

CHENOPODIACEAE

Atriplex heterosperma
© 2013 Trent M. Draper
Atriplex heterosperma
© 2013 Mary Winter
Atriplex heterosperma
© Mary Winter

Atriplex patula    Fat hen,  Fathen saltweed,  Spear orache
native
Annual herb

CHENOPODIACEAE

Atriplex patula
© 2017 Vanessa Yava
Atriplex patula
© 2017 Vanessa Yava
Atriplex patula
© 2017 Vanessa Yava

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

Azolla filiculoides    American water fern, mosquito fern,  Mosquito fern,  Pacific mosquitofern
native
Fern

AZOLLACEAE

Azolla filiculoides
© 2020 Ron Vanderhoff
Azolla filiculoides
© 2023 R.A. Chasey
Azolla filiculoides
© 2021 Zoya Akulova-Barlow

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 vulgaris    Bitter wintercress,  Common wintercress,  Yellow rocket
non-native
Perennial herb

BRASSICACEAE

Barbarea vulgaris
© 2007 Dr. Amadej Trnkoczy
Barbarea vulgaris
© 2011 Steven Perry
Barbarea vulgaris
© 2007 Dr. Amadej Trnkoczy

Beckmannia syzigachne    American sloughgrass,  Slough grass
native
Annual grass

POACEAE

Beckmannia syzigachne
© 2021 Emily R. Allen
Beckmannia syzigachne
© 2018 Japhia Huhndorf
Beckmannia syzigachne
© 2021 Emily R. Allen

Bidens cernua var. cernua    Nodding beggartick
native
Perennial herb

ASTERACEAE

Bidens cernua var. cernua
© 2008 Steve Matson
Bidens cernua var. cernua
© 2008 Steve Matson
Bidens cernua var. cernua
© 2008 Steve Matson

Bidens frondosa    Devil's beggartick,  Sticktight
native
Annual herb

ASTERACEAE

Bidens frondosa
© 2020 R.A. Chasey
Bidens frondosa
© 2020 Bob Sweatt
Bidens frondosa
© 2020 R.A. Chasey

Brassica rapa    Common mustard,  Field mustard,  Rape mustard
invasive non-native
Annual herb

BRASSICACEAE

Brassica rapa
© 2024 David Wolfson
Brassica rapa
© 2021 Diane Etchison
Brassica rapa
© 2018 Angelique Herman

Brodiaea elegans    Harvest brodiaea
native
Perennial herb

THEMIDACEAE

Brodiaea elegans
© 2019 Joe Engelbrecht
Brodiaea elegans
© 2009 Bob Case
Brodiaea elegans
© 2009 BOB CASE

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

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

Calandrinia ciliata    red maids,  Calandrinia
native
Annual herb

MONTIACEAE

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

Callitriche marginata    California water starwort,  Winged water starwort
native
Annual herb (aquatic)

PLANTAGINACEAE

Callitriche marginata
© 2019 Ron Vanderhoff
Callitriche marginata
© 2019 Ron Vanderhoff
Callitriche marginata
© 2019 Ron Vanderhoff

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

BRASSICACEAE

Capsella bursa-pastoris
© 2008 Steve Matson
Capsella bursa-pastoris
© 2019 Cynthia Powell
Capsella bursa-pastoris
© 2022 Doug Allshouse

Cardamine pensylvanica    Pennsylvania bittercress
native
Perennial herb

BRASSICACEAE

Cardamine pensylvanica
© 2015 Mary Merriman
Cardamine pensylvanica
© 2008 Louis-M. Landry
Cardamine pensylvanica
© 2007 Louis-M. Landry

Cardaria draba    Whitetop
invasive non-native
Perennial herb

BRASSICACEAE

Cardaria draba
© 2020 Ron Vanderhoff
Cardaria draba
© 2021 Mike Russler
Cardaria draba
© 2020 Ron Vanderhoff

Cardaria pubescens    Hairy whitetop
invasive non-native
Perennial herb

BRASSICACEAE

Cardaria pubescens
© 2019 Richard Spjut
Cardaria pubescens
© 2017 Leif Johnson
Cardaria pubescens
© 2019 Richard Spjut

Carex barbarae    Santa barbara sedge,  Valley sedge
native
Perennial grasslike herb

CYPERACEAE

Carex barbarae
© 2024 R.A. Chasey
Carex barbarae
© 2023 Ron Vanderhoff
Carex barbarae
© 2023 Ron Vanderhoff

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 praegracilis    Clustered field sedge,  Field sedge
native
Perennial grasslike herb

CYPERACEAE

Carex praegracilis
© 2020 Ken Hickman
Carex praegracilis
© 2020 John Rawlings
Carex praegracilis
© 2020 Steve Matson

Castilleja lineariloba    Sagebrush indian paintbrush,  Thin lobed owl's clover,  Valley tassels
native
Annual herb

OROBANCHACEAE

Castilleja lineariloba
© 2016 Steve Matson
Castilleja lineariloba
© 2016 Steve Matson
Castilleja lineariloba
© 2016 Steve Matson

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 muehlenbergii    Muehlenberg's centaury
native
Annual herb

GENTIANACEAE

Centaurium muehlenbergii
© 2019 Patrick Furtado
Centaurium muehlenbergii
© 2015 James Gonsman
Centaurium muehlenbergii
© 2011 Michael Perlmutter

native
Shrub

RUBIACEAE

Cephalanthus occidentalis var. californicus
© 2021 Mike Russler
Cephalanthus occidentalis var. californicus
© 2017 Carl Bjork
Cephalanthus occidentalis var. californicus
© 2017 Carl Bjork

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

CARYOPHYLLACEAE

Cerastium glomeratum
© 2024 Dana York
Cerastium glomeratum
© 2023 Ron Vanderhoff
Cerastium glomeratum
© 2023 R.A. Chasey

Chamaesyce serpyllifolia    Thyme-leafed spurge
native
Annual herb

EUPHORBIACEAE

Chamaesyce serpyllifolia
© 2022 Steve Matson
Chamaesyce serpyllifolia
© 2022 Steve Matson
Chamaesyce serpyllifolia
© 2005 Steve Matson

Chamomilla suaveolens    Pineapple weed
native
Annual herb

ASTERACEAE

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

Chenopodium album    Lamb's quarters,  Lambs quarters,  White goosefoot
non-native
Annual herb

CHENOPODIACEAE

Chenopodium album
© 2022 Ron Vanderhoff
Chenopodium album
© 2014 Toni Corelli
Chenopodium album
© 2022 Ron Vanderhoff

Chenopodium ambrosioides    Mexican tea
non-native
Annual, Perennial herb

CHENOPODIACEAE

Chenopodium ambrosioides
© 2020 Ron Vanderhoff
Chenopodium ambrosioides
© 2018 Ron Vanderhoff
Chenopodium ambrosioides
© 2020 Ron Vanderhoff

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

Cichorium intybus    Chicory
non-native
Perennial herb

ASTERACEAE

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

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

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

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

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 bonariensis    Flax-leaved horseweed
non-native
Annual herb

ASTERACEAE

Conyza bonariensis
© 2021 Donald Burk
Conyza bonariensis
© 2017 Gary McDonald
Conyza bonariensis
© 2023 Ron Vanderhoff

Conyza canadensis    Canada horseweed
native
Annual herb

ASTERACEAE

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

Cordylanthus pilosus ssp. pilosus    Hairy bird's beak
native
Annual herb

OROBANCHACEAE

Cordylanthus pilosus ssp. pilosus
© 2022 R.A. Chasey
Cordylanthus pilosus ssp. pilosus
© 2022 R.A. Chasey
Cordylanthus pilosus ssp. pilosus
© 2015 John Doyen

Cornus glabrata    Brown dogwood
native
Tree, Shrub

CORNACEAE

Cornus glabrata
© 2021 Donald Burk
Cornus glabrata
© 2021 Barbara Peck
Cornus glabrata
© 2021 John Rawlings

Cornus sericea    American dogwood,  Creek dogwood,  Redosier dogwood
native
Shrub

CORNACEAE

Cornus sericea
© 2023 Ellen Uhler
Cornus sericea
© 2018 Hayley Ross
Cornus sericea
© 2016 Suzanne L. Weakley

Cotula coronopifolia    Brass buttons,  Common brassbuttons
invasive non-native
Perennial herb

ASTERACEAE

Cotula coronopifolia
© 2022 Steve Matson
Cotula coronopifolia
© 2022 Steve Matson
Cotula coronopifolia
© 2018 Adam Chasey

Crassula aquatica    Aquatic pygmy weed,  Pigmy weed,  Water pygmyweed
native
Annual herb

CRASSULACEAE

Crassula aquatica
© 2019 Ron Vanderhoff
Crassula aquatica
© 2022 Ken-ichi Ueda
Crassula aquatica
© 2022 Catherine Chang

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

Crypsis schoenoides    Swamp grass,  Swamp picklegrass,  Swamp pricklegrass
non-native
Annual grass

POACEAE

Crypsis schoenoides
© 2023 Ron Vanderhoff
Crypsis schoenoides
© 2018 Ron Vanderhoff
Crypsis schoenoides
© 2019 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

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

POACEAE

Cynosurus echinatus
© 2017 Gary McDonald
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
© 2021 Ken Lunders
Cyperus eragrostis
© 2014 James Gonsman

Cyperus esculentus    Chufa flatsedge,  Nut grass,  Yellow nutgrass
native
Perennial grasslike herb

CYPERACEAE

Cyperus esculentus
© 2020 Ron Vanderhoff
Cyperus esculentus
© 2015 Gerald Carr
Cyperus esculentus
© 2019 Ron Vanderhoff

Cyperus involucratus    Umbrella plant,  Unbrella plant
non-native
Perennial grasslike herb

CYPERACEAE

Cyperus involucratus
© 2018 Rachelle Gray
Cyperus involucratus
© 2020 Martin Lemon
Cyperus involucratus
© 2018 Jennifer Mo

Datura stramonium    Jimson weed,  Jimsonweed
non-native
Annual herb

SOLANACEAE

Datura stramonium
© 2011 Steve Matson
Datura stramonium
© 2011 Steve Matson
Datura stramonium
© 2020 Ron Vanderhoff

Descurainia sophia    Flix weed,  Herb sophia
invasive non-native
Annual herb

BRASSICACEAE

Descurainia sophia
© 2014 Steve Matson
Descurainia sophia
© 2021 R.A. Chasey
Descurainia sophia
© 2014 Steve Matson

Digitaria sanguinalis    Hairy crabgrass
non-native
Annual grass

POACEAE

Digitaria sanguinalis
© 2022 Ron Vanderhoff
Digitaria sanguinalis
© 2022 Ron Vanderhoff
Digitaria sanguinalis
© 2019 Jennifer Mo

Distichlis spicata    Inland saltgrass,  Salt grass,  Saltgrass
native
Perennial grass

POACEAE

Distichlis spicata
© 2020 Matt Berger
Distichlis spicata
© 2019 Ron Vanderhoff
Distichlis spicata
© 2022 Donald Burk

Downingia bicornuta    Bristled downingia,  Doublehorn calicoflower
native
Annual herb

CAMPANULACEAE

Downingia bicornuta
© 2019 David Greenberger
Downingia bicornuta
© 2019 Belinda Lo
Downingia bicornuta
© 2022 Steve Matson

Echinochloa crus-galli    Barnyard grass,  Japanese millet,  Watergrass
non-native
Annual grass

POACEAE

Echinochloa crus-galli
© 2016 Barbara Boethling
Echinochloa crus-galli
© 2022 R.A. Chasey
Echinochloa crus-galli
© 2008 Zoya Akulova

Eleocharis acicularis var. bella    Beautiful spikerush
native
Perennial grasslike herb

CYPERACEAE

Eleocharis acicularis var. bella
© 2021 R.A. Chasey
Eleocharis acicularis var. bella
© 2003 Steve Matson
Eleocharis acicularis var. bella
© 2013 Jake Ruygt

Eleocharis macrostachya    Common spikerush,  Creeping spike rush,  Pale spikerush
native
Perennial grasslike herb

CYPERACEAE

Eleocharis macrostachya
© 2023 Ron Vanderhoff
Eleocharis macrostachya
© 2023 Ron Vanderhoff
Eleocharis macrostachya
© 2003 Steve Matson

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

Epilobium brachycarpum    Annual fireweed,  Autumn willowweed,  Panicled willow herb
native
Annual herb

ONAGRACEAE

Epilobium brachycarpum
© 2023 Mary Ann Machi
Epilobium brachycarpum
© 2019 Ramona Robison
Epilobium brachycarpum
© 2020 Ron Vanderhoff

Epilobium ciliatum ssp. ciliatum    Fringed willowherb,  Northern willow herb,  Willow herb
native
Perennial herb

ONAGRACEAE

Epilobium ciliatum ssp. ciliatum
© 2014 Steve Matson
Epilobium ciliatum ssp. ciliatum
© 2014 Steve Matson
Epilobium ciliatum ssp. ciliatum
© 2014 Steve Matson

Epilobium pygmaeum    Smooth boisduvalia
native
Annual herb

ONAGRACEAE

Epilobium pygmaeum
© 2007 Steve Matson
Epilobium pygmaeum
© 2007 Steve Matson
Epilobium pygmaeum
© 2007 Steve Matson

Erigeron sp.    Small Tree-Mallow


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
© 2020 Angelique Herman
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

Eryngium aristulatum    California eryngo,  Jepson's button celery
native
Perennial herb

APIACEAE

Eryngium aristulatum
© 2022 R.A. Chasey
Eryngium aristulatum
© 2019 Ron Vanderhoff
Eryngium aristulatum
© 2012 Keir Morse

Eryngium articulatum    Beethistle,  Coyote thistle
native
Perennial herb

APIACEAE

Eryngium articulatum
© 2021 John Game
Eryngium articulatum
© 2015 Steve Matson
Eryngium articulatum
© 2015 Steve Matson

Euthamia occidentalis    Western flat topped goldenrod,  Western goldenrod,  Western goldentop
native
Perennial herb

ASTERACEAE

Euthamia occidentalis
© 2021 Steve Matson
Euthamia occidentalis
© 2018 Ron Vanderhoff
Euthamia occidentalis
© 2021 R.A. Chasey

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

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

Fraxinus latifolia    Oregon ash
native
Tree

OLEACEAE

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

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

RUBIACEAE

Galium aparine
© 2020 Ron Vanderhoff
Galium aparine
© 2005 Steve Matson
Galium aparine
© 2020 Ron Vanderhoff

Geranium carolinianum    Carolina geranium
native
Annual herb

GERANIACEAE

Geranium carolinianum
© 2021 Ron Vanderhoff
Geranium carolinianum
© 2024 Ron Vanderhoff
Geranium carolinianum
© 2024 Ron Vanderhoff

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

GERANIACEAE

Geranium dissectum
© 2021 Al Keuter
Geranium dissectum
© 2023 Ron Vanderhoff
Geranium dissectum
© 2014 Bryan Derr

Glinus lotoides    Lotus sweetjuice
non-native
Annual herb

MOLLUGINACEAE

Glinus lotoides
© 2021 R.A. Chasey
Glinus lotoides
© 2021 Donald Burk
Glinus lotoides
© 2021 Donald Burk

Glycyrrhiza lepidota    American licorice,  Lichorice,  Wild licorice
native
Perennial herb

FABACEAE

Glycyrrhiza lepidota
© 2010 Steve Matson
Glycyrrhiza lepidota
© 2010 Steve Matson
Glycyrrhiza lepidota
© 2010 Steve Matson

Gnaphalium luteo-album    Jersey cudweed
non-native
Annual herb

ASTERACEAE

Gnaphalium luteo-album
© 2021 Ron Vanderhoff
Gnaphalium luteo-album
© 2019 Diane Etchison
Gnaphalium luteo-album
© 2021 Ron Vanderhoff

Gnaphalium palustre    Lowland cudweed,  Western marsh cudweed
native
Annual herb

ASTERACEAE

Gnaphalium palustre
© 2019 Ron Vanderhoff
Gnaphalium palustre
© 2005 Steve Matson
Gnaphalium palustre
© 2019 Ron Vanderhoff

Gratiola ebracteata    Bractless hedge hyssop,  Common hedge hyssop
native
Annual herb

PLANTAGINACEAE

Gratiola ebracteata
© 2022 Steve Matson
Gratiola ebracteata
© 2022 Steve Matson
Gratiola ebracteata
© 2022 Steve Matson

Gratiola neglecta    Clammy hedge hyssop,  Clammy hedgehyssop
native
Annual herb

PLANTAGINACEAE

Gratiola neglecta
© 2009 Gerald Carr
Gratiola neglecta
© 2009 Gerald Carr
Gratiola neglecta
© 2009 Gerald Carr

Grindelia camporum    Common gumplant,  Great valley gumweed,  Gum plant
native
Perennial herb

ASTERACEAE

Grindelia camporum
© 2023 R.A. Chasey
Grindelia camporum
© 2019 Ron Vanderhoff
Grindelia camporum
© 2019 Ron Vanderhoff

Helenium puberulum    Rosilla,  Sneezeweed
native
Perennial herb

ASTERACEAE

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

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

Heliotropium sp.    Small Tree-Mallow


Hemizonia congesta    Hayfield tarweed
native
Annual herb

ASTERACEAE

Hemizonia congesta
© 2019 Steve Matson
Hemizonia congesta
© 2016 Steve Matson
Hemizonia congesta
© 2016 Steve Matson

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

Hemizonia fitchii    Spikeweed
native
Annual herb

ASTERACEAE

Hemizonia fitchii
© 2015 Steve Matson
Hemizonia fitchii
© 2019 Julie Kierstead Nelson
Hemizonia fitchii
© 2021 Mike Russler

Hemizonia pungens    Common tarweed,  Common spikeweed
native
Annual herb

ASTERACEAE

Hemizonia pungens
© 2014 Ron Vanderhoff
Hemizonia pungens
© 2022 Steve Matson
Hemizonia pungens
© 2022 Eric Koberle

Hibiscus lasiocarpus    Woolly rose-mallow
rare native
Perennial herb

MALVACEAE

Hibiscus lasiocarpus
© 2020 Charles Russell
Hibiscus lasiocarpus
© 2021 David popp
Hibiscus lasiocarpus
© 2022 Morgan Stickrod

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

Holocarpha obconica    San joaquin tarweed
native
Annual herb

ASTERACEAE

Holocarpha obconica
© 2019 Steve Matson
Holocarpha obconica
© 2019 Steve Matson
Holocarpha obconica
© 2019 Steve Matson

Holocarpha virgata ssp. virgata    Narrow tarplant,  Yellowflower tarweed
native
Annual herb

ASTERACEAE

Holocarpha virgata ssp. virgata
© 2019 Steve Matson
Holocarpha virgata ssp. virgata
© 2019 Steve Matson
Holocarpha virgata ssp. virgata
© 2019 Steve Matson

Hordeum brachyantherum    Meadow barley
native
Perennial grass

POACEAE

Hordeum brachyantherum
© 2015 Steve Matson
Hordeum brachyantherum
© 2015 Steve Matson
Hordeum brachyantherum
© 2015 Steve Matson

Hordeum depressum    Alkali barley,  Dwarf barley,  Low barley
native
Annual grass

POACEAE

Hordeum depressum
© 2017 Steve Matson
Hordeum depressum
© 2017 Steve Matson
Hordeum depressum
© 2024 Denise Defreese

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 perforatum    Common st. johnswort,  Klamath weed,  Klamathweed
invasive non-native
Perennial herb

HYPERICACEAE

Hypericum perforatum
© 2020 Bob Sweatt
Hypericum perforatum
© 2018 stephen rosenthal
Hypericum perforatum
© 2020 Bob Sweatt

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

ASTERACEAE

Hypochaeris radicata
© 2024 Ron Vanderhoff
Hypochaeris radicata
© 2017 Gary McDonald
Hypochaeris radicata
© 2016 Michael Mitchell

Juncus acuminatus    Sharp fruited rush,  Taper tip rush,  Tapertip rush
native
Perennial grasslike herb

JUNCACEAE

Juncus acuminatus
© 2021 Peter Warner
Juncus acuminatus
© 2021 Peter Warner
Juncus acuminatus
© 2021 Peter Warner

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

Juncus bufonius    Common toad rush,  Toad rush
native
Annual grasslike herb

JUNCACEAE

Juncus bufonius
© 2022 Steve Matson
Juncus bufonius
© 2022 Steve Matson
Juncus bufonius
© 2022 Steve Matson

Juncus effusus    Bog rush,  Common bog rush,  Common rush
native
Perennial grasslike herb

JUNCACEAE

Juncus effusus
© 2019 Patrick Furtado
Juncus effusus
© 2019 Patrick Furtado
Juncus effusus
© 2021 R.A. Chasey

Juncus oxymeris    Pointed rush
native
Perennial grasslike herb

JUNCACEAE

Juncus oxymeris
© 2016 Steve Matson
Juncus oxymeris
© 2016 Steve Matson
Juncus oxymeris
© 2016 Steve Matson

Kickxia elatine    Sharp leaved fluellin,  Sharp point fluellin,  Sharpleaf cancerwort
non-native
Perennial herb

PLANTAGINACEAE

Kickxia elatine
© 2023 John Malpas
Kickxia elatine
© 2018 Ron Vanderhoff
Kickxia elatine
© 2016 Barbara Boethling

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

Lamium amplexicaule    Giraffe head,  Henbit deadnettle
non-native
Annual herb

LAMIACEAE

Lamium amplexicaule
© 2005 Steve Matson
Lamium amplexicaule
© 2005 Steve Matson
Lamium amplexicaule
© 2021 Mike Russler

Lasthenia glaberrima    Smooth goldfields
native
Annual herb

ASTERACEAE

Lasthenia glaberrima
© 2017 Michael Mitchell
Lasthenia glaberrima
© 2020 Matt Berger
Lasthenia glaberrima
© 2020 R.A. Chasey

Lasthenia glabrata    Yellow rayed goldfields,  Yellow rayed lasthenia,  Yellowray goldfields
native
Annual herb

ASTERACEAE

Lasthenia glabrata
© 2022 Morgan Stickrod
Lasthenia glabrata
© 2020 Aaron Echols
Lasthenia glabrata
© 2023 Ron Vanderhoff

Lathyrus jepsonii var. californicus    California tule pea
native
Perennial herb

FABACEAE

Lathyrus jepsonii var. californicus
© 2020 R.A. Chasey
Lathyrus jepsonii var. californicus
© 2019 Esther Cole
Lathyrus jepsonii var. californicus
© 2020 R.A. Chasey

Layia fremontii    Fremont layia,  Fremont's tidy tips,  Fremont's tidytips
native
Annual herb

ASTERACEAE

Layia fremontii
© 2021 Steve Matson
Layia fremontii
© 2022 Steve Matson
Layia fremontii
© 2021 Steve Matson

Leersia oryzoides    Rice cutgrass
native
Perennial grass

POACEAE

Leersia oryzoides
© 2019 Jennifer Mo
Leersia oryzoides
© 2008 Keir Morse
Leersia oryzoides
© 2017 jerry fitch

Lemna sp.    Small Tree-Mallow


Lepidium latifolium    Broad leaved pepper grass,  Broadleaved pepperweed,  Perennial pepperweed
invasive non-native
Perennial herb

BRASSICACEAE

Lepidium latifolium
© 2022 Donald Burk
Lepidium latifolium
© 2020 Ron Vanderhoff
Lepidium latifolium
© 2021 Michelle Karle

Lepidium nitidum    Peppergrass,  Shining pepper grass,  Shining pepperweed
native
Annual herb

BRASSICACEAE

Lepidium nitidum
© 2021 Steve Matson
Lepidium nitidum
© 2016 Steve Matson
Lepidium nitidum
© 2021 Steve Matson

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

Leptochloa fascicularis    Bearded sprangletop
native
Annual grass

POACEAE

Leptochloa fascicularis
© 2023 Donald Burk
Leptochloa fascicularis
© 2021 R.A. Chasey
Leptochloa fascicularis
© 2021 Ken Hickman

Leymus triticoides    Beardless wild rye
native
Perennial grass

POACEAE

Leymus triticoides
© 2018 Ron Vanderhoff
Leymus triticoides
© 2021 Ron Vanderhoff
Leymus triticoides
© 2018 Rachelle Gray

Lilaea scilloides    Flowering-quillwort
native
Annual herb (aquatic)

JUNCAGINACEAE

Lilaea scilloides
© 2018 Carol Witham
Lilaea scilloides
© 2023 Ron Vanderhoff
Lilaea scilloides
© 2011 Hattie Brown

Limosella acaulis    Broad leaved mudwort,  Owyhee mudwort,  Southern mudwort
native
Annual herb

SCROPHULARIACEAE

Limosella acaulis
© 2020 Steve Matson
Limosella acaulis
© 2020 Steve Matson
Limosella acaulis
© 2021 R.A. Chasey

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

POACEAE

Lolium multiflorum
© 2019 Ron Vanderhoff
Lolium multiflorum
© 2017 Gary McDonald
Lolium multiflorum
© 2021 Ron Vanderhoff

Lotus corniculatus    Bird's foot trefoil,  Birdfoot deervetch,  Broadleaf birdsfoot trefoil
invasive non-native
Perennial herb

FABACEAE

Lotus corniculatus
© 2005 Steve Matson
Lotus corniculatus
© 2014 Steve Matson
Lotus corniculatus
© 2014 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

Ludwigia peploides    Floating primrose willow,  Floating water primrose,  Marsh purslane
invasive non-native
Perennial herb

ONAGRACEAE

Ludwigia peploides
© 2022 David Strauch
Ludwigia peploides
© 2019 Lenihan Mazur
Ludwigia peploides
© 2019 Patrick Furtado

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

Lycopus americanus    American water horehound,  Bugleweed
native
Perennial herb

LAMIACEAE

Lycopus americanus
© 2021 Donald Burk
Lycopus americanus
© 2021 Sara Sweet
Lycopus americanus
© 2021 Sara Sweet

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

LYTHRACEAE

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

Lythrum tribracteatum    Three bracted loosestrife,  Threebract loosestrife
non-native
Annual herb

LYTHRACEAE

Lythrum tribracteatum
© 2023 R.A. Chasey
Lythrum tribracteatum
© 2019 Ramona Robison
Lythrum tribracteatum
© 2023 R.A. Chasey

Maclura pomifera    Osage orange
non-native
Tree, Shrub

MORACEAE

Maclura pomifera
© 2016 Steve Matson
Maclura pomifera
© 2016 Steve Matson
Maclura pomifera
© 2016 Steve Matson

Malva parviflora    Cheeseweed mallow
non-native
Annual herb

MALVACEAE

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

Malvella leprosa    Alkali mallow
native
Perennial herb

MALVACEAE

Malvella leprosa
© 2023 Donald Burk
Malvella leprosa
© 2019 Bonnie Nickel
Malvella leprosa
© 2019 Bonnie Nickel

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

Marsilea vestita ssp. vestita    Hairy pepperwort,  Hairy waterclover
native
Fern

MARSILEACEAE

Marsilea vestita ssp. vestita
© 2019 Ron Vanderhoff
Marsilea vestita ssp. vestita
© 2019 Ron Vanderhoff
Marsilea vestita ssp. vestita
© 2017 Ron Vanderhoff

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

Melilotus albus    White sweetclover
invasive non-native
Annual, Biennial herb

FABACEAE

Melilotus albus
© 2021 Ron Vanderhoff
Melilotus albus
© 2020 Bob Sweatt
Melilotus albus
© 2022 Ron Vanderhoff

Mentha arvensis    American wild mint,  Field mint,  Marsh mint
native
Perennial herb

LAMIACEAE

Mentha arvensis
© 2003 Steve Matson
Mentha arvensis
© 2003 Steve Matson
Mentha arvensis
© 2014 Steve Matson

Mentha pulegium    Pennyroyal
invasive non-native
Perennial herb

LAMIACEAE

Mentha pulegium
© 2014 James Gonsman
Mentha pulegium
© 2022 R.A. Chasey
Mentha pulegium
© 2015 Chris Jaster

Mimulus tricolor    Tricolor monkeyflower
native
Annual herb

PHRYMACEAE

Mimulus tricolor
© 2020 Matt Berger
Mimulus tricolor
© 2022 Steve Matson
Mimulus tricolor
© 2022 Steve Matson

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

MONTIACEAE

Montia fontana
© 2023 Alaine Arslan
Montia fontana
© 2023 Alaine Arslan
Montia fontana
© 2006 Steve Matson

Myosurus minimus    Common mouse tail,  Little mouse tail,  Tiny mousetail
native
Annual herb

RANUNCULACEAE

Myosurus minimus
© 2022 Dianne Lake
Myosurus minimus
© 2024 Cynthia Powell
Myosurus minimus
© 2024 Kevin Dixon

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 squarrosa    Skunkbush,  Skunkweed
native
Annual herb

POLEMONIACEAE

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

Oenanthe sarmentosa    Pacific oenanthe,  Water parsley
native
Perennial herb

APIACEAE

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

Oxalis corniculata    Creeping wood sorrel,  Creeping woodsorrel,  Yellow sorrel
invasive non-native
Perennial herb

OXALIDACEAE

Oxalis corniculata
© 2022 Donald Burk
Oxalis corniculata
© 2022 Ron Vanderhoff
Oxalis corniculata
© 2021 Ron Vanderhoff

Panicum dichotomiflorum    Fall panicgrass,  Smooth witchgrass
non-native
Annual grass

POACEAE

Panicum dichotomiflorum
© 2005 Adonis (Don) Tate
Panicum dichotomiflorum
© 2011 Steve Matson
Panicum dichotomiflorum
© 2005 Adonis (Don) Tate

Paspalum dilatatum    Dallis grass,  Dallisgrass
non-native
Perennial grass

POACEAE

Paspalum dilatatum
© 2018 Ron Vanderhoff
Paspalum dilatatum
© 2017 Barbara Boethling
Paspalum dilatatum
© 2021 Ron Vanderhoff

Paspalum distichum    Knot grass,  Knotgrass
native
Perennial grass

POACEAE

Paspalum distichum
© 2011 Steve Matson
Paspalum distichum
© 2017 Ron Vanderhoff
Paspalum distichum
© 2017 Ron Vanderhoff

Phacelia lemmonii    Lemmon's phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia lemmonii
© 2006 Aaron Schusteff
Phacelia lemmonii
© 2006 Aaron Schusteff
Phacelia lemmonii
© 2014 John Game

Phalaris minor    Little seed canarygrass,  Littleseed canarygrass,  Mediterranean canarygrass
non-native
Annual grass

POACEAE

Phalaris minor
© 2014 Steve Matson
Phalaris minor
© 2014 Steve Matson
Phalaris minor
© 2014 Steve Matson

Phalaris paradoxa    Hood canarygrass
non-native
Annual grass

POACEAE

Phalaris paradoxa
© 2021 David popp
Phalaris paradoxa
© 2021 John Rawlings
Phalaris paradoxa
© 2017 James Bailey

Phleum pratense    Common timothy,  Cultivated timothy,  Timothy
non-native
Perennial grass

POACEAE

Phleum pratense
© 2013 BOB CASE
Phleum pratense
© 2019 Julie Kierstead Nelson
Phleum pratense
© 2021 Emily R. Allen

Phoradendron macrophyllum    Big leaf mistletoe
native
Shrub (parasitic)

VISCACEAE

Phoradendron macrophyllum
© 2021 Ron Vanderhoff
Phoradendron macrophyllum
© 2021 Ron Vanderhoff
Phoradendron macrophyllum
© 2021 Ron Vanderhoff

Phoradendron villosum    Mistletoe
native
Shrub (parasitic)

VISCACEAE

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

Phyla nodiflora var. nodiflora    Common lippia,  Lippia,  Turkey tangle frogfruit
native
Perennial herb

VERBENACEAE

Phyla nodiflora var. nodiflora
© 2018 Ron Vanderhoff
Phyla nodiflora var. nodiflora
© 2009 Ron Vanderhoff
Phyla nodiflora var. nodiflora
© 2022 Donald Burk

Picris echioides    Bristly ox-tongue
invasive non-native
Annual, Perennial herb

ASTERACEAE

Picris echioides
© 2016 Hayley Ross
Picris echioides
© 2019 Rachelle Gray
Picris echioides
© 2012 Elizabeth Brusati

Pilularia americana    American pillwort
native
Fern

MARSILEACEAE

Pilularia americana
© 2017 Ron Vanderhoff
Pilularia americana
© 2017 Ron Vanderhoff
Pilularia americana
© 2022 Matt Berger

Plagiobothrys bracteatus    Bracted allocarya,  Bracted popcorn flower,  Bracted popcornflower
native
Annual herb

BORAGINACEAE

Plagiobothrys bracteatus
© 2023 R.A. Chasey
Plagiobothrys bracteatus
© 2023 R.A. Chasey
Plagiobothrys bracteatus
© 2023 R.A. Chasey

Plagiobothrys stipitatus var. micranthus    Common vernal pool allocarya,  Stalked popcornflower
native
Annual herb

BORAGINACEAE

Plagiobothrys stipitatus var. micranthus
© 2017 Steve Matson
Plagiobothrys stipitatus var. micranthus
© 2017 Steve Matson
Plagiobothrys stipitatus var. micranthus
© 2017 Steve Matson

Plagiobothrys stipitatus var. stipitatus    Stalked popcornflower,  Vernal pool allocarya
native
Annual herb

BORAGINACEAE

Plagiobothrys stipitatus var. stipitatus
© 2021 Paul Watts
Plagiobothrys stipitatus var. stipitatus
© 2021 Paul Watts
Plagiobothrys stipitatus var. stipitatus
© null

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

PLANTAGINACEAE

Plantago lanceolata
© 2017 Gary McDonald
Plantago lanceolata
© 2019 Joe Engelbrecht
Plantago lanceolata
© 2021 Ken Lunders

Plantago major    Common plantain
non-native
Perennial herb

PLANTAGINACEAE

Plantago major
© 2019 Bob Sweatt
Plantago major
© 2022 Diana Wahl
Plantago major
© 2020 Ryan Carle

Pleuropogon californicus    Annual semaphoregrass,  Semaphore grass
native
Perennial grass (rhizomatous)

POACEAE

Pleuropogon californicus
© 2018 Hayley Ross
Pleuropogon californicus
© 2018 Hayley Ross
Pleuropogon californicus
© 2018 Hayley Ross

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 pratensis ssp. pratensis    Kentucky blue grass,  Kentucky bluegrass
invasive non-native
Perennial grass

POACEAE

Poa pratensis ssp. pratensis
© 2021 John Rawlings
Poa pratensis ssp. pratensis
© 2020 Diana Wahl
Poa pratensis ssp. pratensis
© 1998 Dean Wm. Taylor (Poa pratensis ssp. agassizensis)

Polygonum amphibium var. emersum    Water smartweed
native
Perennial herb (aquatic)

POLYGONACEAE

Polygonum amphibium var. emersum
© 2017 Ron Vanderhoff
Polygonum amphibium var. emersum
© 2017 Ron Vanderhoff
Polygonum amphibium var. emersum
© 2019 Diane Etchison

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 argyrocoleon    Persian knotweed,  Silver sheath knotweed,  Silversheath knotweed
non-native
Annual herb

POLYGONACEAE

Polygonum argyrocoleon
© 2020 Ron Vanderhoff
Polygonum argyrocoleon
© 2018 Ron Vanderhoff
Polygonum argyrocoleon
© 2020 Ron Vanderhoff

Polygonum hydropiperoides    Water pepper
native
Perennial herb

POLYGONACEAE

Polygonum hydropiperoides
© 2017 Ron Vanderhoff
Polygonum hydropiperoides
© 2021 Ken Hickman
Polygonum hydropiperoides
© 2021 John Rawlings

Polygonum lapathifolium    Common knotweed
native
Annual herb

POLYGONACEAE

Polygonum lapathifolium
© 2020 Ron Vanderhoff
Polygonum lapathifolium
© 2017 Ron Vanderhoff
Polygonum lapathifolium
© 2020 Ron Vanderhoff

Polygonum persicaria    Spotted ladysthumb
non-native
Annual herb

POLYGONACEAE

Polygonum persicaria
© 2020 R.A. Chasey
Polygonum persicaria
© 2021 joaquin hale
Polygonum persicaria
© 2021 joaquin hale

Polygonum punctatum    Dotted smartweed
native
Perennial herb

POLYGONACEAE

Polygonum punctatum
© 2018 Ron Vanderhoff
Polygonum punctatum
© 2018 Ron Vanderhoff
Polygonum punctatum
© 2022 Helen Hancock

Polypogon maritimus    Mediterranean beard grass,  Mediterranean rabbitsfoot grass
non-native
Annual grass

POACEAE

Polypogon maritimus
© 2022 David popp
Polypogon maritimus
© 2020 Diana Wahl
Polypogon maritimus
© 2009 Keir Morse

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

Populus fremontii ssp. fremontii    Fremont cottonwood
native
Tree

SALICACEAE

Populus fremontii ssp. fremontii
© 2019 Stella Yang
Populus fremontii ssp. fremontii
© 2020 David popp
Populus fremontii ssp. fremontii
© 2020 Susan McDougall

Portulaca oleracea    Common purslane,  Little hogweed,  Purslane
non-native
Annual herb

PORTULACACEAE

Portulaca oleracea
© 2020 Ron Vanderhoff
Portulaca oleracea
© 2022 Ron Vanderhoff
Portulaca oleracea
© 2020 R.A. Chasey

Potamogeton sp.    Small Tree-Mallow


Psilocarphus brevissimus var. multiflorus    Delta woolly marbles,  Dwarf woollyheads
rare native
Annual herb

ASTERACEAE

Psilocarphus brevissimus var. multiflorus
© 2018 David Greenberger
Psilocarphus brevissimus var. multiflorus
© 2019 Elliot Gunnison

Psilocarphus oregonus    Oregon woolly marbles,  Oregon woollyheads,  Woolly marbles
native
Annual herb

ASTERACEAE

Psilocarphus oregonus
© 2017 David Greenberger
Psilocarphus oregonus
© 2022 Dianne Lake
Psilocarphus oregonus
© 2022 Donald Burk

Pyrus communis    Common pear
non-native
Tree

ROSACEAE

Pyrus communis
© 2023 Donald Burk
Pyrus communis
© 2023 Donald Burk
Pyrus communis
© 2023 Donald Burk

Quercus lobata    California white oak,  Valley oak
native
Tree

FAGACEAE

Quercus lobata
© 2023 Helen Hancock
Quercus lobata
© 2021 Cynthia Powell
Quercus lobata
© 2023 Suzanne L. Weakley

Quercus wislizeni var. wislizeni    Interior live oak
native
Tree, Shrub

FAGACEAE

Quercus wislizeni var. wislizeni
© 2018 Jay Chamberlain
Quercus wislizeni var. wislizeni
© 2019 Jay Chamberlain
Quercus wislizeni var. wislizeni
© 2020 Susan McDougall

Ranunculus alismifolius    Alisma leaved buttercup,  Common water plantain buttercup,  Plantainleaf buttercup
native
Perennial herb

RANUNCULACEAE

Ranunculus alismifolius
© 2018 Gerald Carr
Ranunculus alismifolius
© 2003 Steve Matson
Ranunculus alismifolius
© 2018 Gerald Carr

Ranunculus bonariensis var. trisepalus    Carter's buttercup,  Vernal pool buttercup
native
Annual herb

RANUNCULACEAE

Ranunculus bonariensis var. trisepalus
© 2008 Steve Matson
Ranunculus bonariensis var. trisepalus
© 2008 Steve Matson
Ranunculus bonariensis var. trisepalus
© 2008 Steve Matson

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

Ranunculus pusillus    Low buttercup,  Low spearwort
native
Annual herb (aquatic)

RANUNCULACEAE

Ranunculus pusillus
© 2023 R.A. Chasey
Ranunculus pusillus
© 2007 Jorg & Mimi Fleige
Ranunculus pusillus
© 2023 R.A. Chasey

Ranunculus sceleratus    Cursed buttercup,  Cursed crowfoot
native
Annual herb (aquatic)

RANUNCULACEAE

Ranunculus sceleratus
© 2022 Mark Gary
Ranunculus sceleratus
© 2020 Roy Johnson
Ranunculus sceleratus
© 2016 Neal Kramer

Raphanus raphanistrum    Jointed charlock,  Painted charlock,  Wild radish
non-native
Annual, Perennial herb

BRASSICACEAE

Raphanus raphanistrum
© 2018 Angelique Herman
Raphanus raphanistrum
© 2016 Camille Nowell
Raphanus raphanistrum
© 2018 Angelique Herman

Raphanus sativus    Cultivated radish,  Jointed charlock,  Wild radish
invasive non-native
Annual, Biennial herb

BRASSICACEAE

Raphanus sativus
© 2017 Lisa Miller
Raphanus sativus
© 2020 Ron Vanderhoff
Raphanus sativus
© 2023 Julia Markey

Rorippa curvisiliqua    Curvepod yellow cress,  Curvepod yellowcress,  Western yellow cress
native
Annual, Perennial herb

BRASSICACEAE

Rorippa curvisiliqua
© 2020 Ron Vanderhoff
Rorippa curvisiliqua
© 2023 Ron Vanderhoff
Rorippa curvisiliqua
© 2023 Ron Vanderhoff

native
Annual, Perennial herb

BRASSICACEAE

Rorippa palustris var. occidentalis
© 2017 Ron Vanderhoff
Rorippa palustris var. occidentalis
© 2017 Ron Vanderhoff
Rorippa palustris var. occidentalis
© 2018 Ron Vanderhoff

Rosa californica    California wild rose,  California wildrose
native
Shrub

ROSACEAE

Rosa californica
© 2022 Suzanne L. Weakley
Rosa californica
© 2022 Suzanne L. Weakley
Rosa californica
© 2021 Sue Graue

Rotala ramosior    Lowland rotala
native
Annual herb

LYTHRACEAE

Rotala ramosior
© 2022 Donald Burk
Rotala ramosior
© 2022 Donald Burk
Rotala ramosior
© 2023 Donald Burk

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

ROSACEAE

Rubus armeniacus
© 2014 James Gonsman
Rubus armeniacus
© 2020 Julie A. Kierstead
Rubus armeniacus
© 2018 Richard Spjut

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 conglomeratus    Clustered dock,  Green dock
non-native
Perennial herb

POLYGONACEAE

Rumex conglomeratus
© 2020 Ron Vanderhoff
Rumex conglomeratus
© 2023 Ron Vanderhoff
Rumex conglomeratus
© 2023 Ron Vanderhoff

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
© 2019 Saul Soto

Rumex salicifolius    Willow dock,  Willow leaved dock
native
Perennial herb

POLYGONACEAE

Rumex salicifolius
© 2023 Ron Vanderhoff
Rumex salicifolius
© 2012 Gary McDonald
Rumex salicifolius
© 2012 Gary McDonald

Sagittaria latifolia    Broad leaf arrowhead,  Broadleaf arrowhead,  Wappato
native
Perennial herb (aquatic)

ALISMATACEAE

Sagittaria latifolia
© 2005 Louis-M. Landry
Sagittaria latifolia
© 2007 George W. Hartwell
Sagittaria latifolia
© 2005 Louis-M. Landry

Sagittaria montevidensis ssp. calycina    Hooded arrowhead,  Montevideo arrowhead
native
Perennial herb (aquatic)

ALISMATACEAE

Sagittaria montevidensis ssp. calycina
© 2022 Donald Burk
Sagittaria montevidensis ssp. calycina
© 2022 Donald Burk
Sagittaria montevidensis ssp. calycina
© 2022 Donald Burk

Salix exigua    Narrow leaved willow,  Narrowleaf willow,  Sandbar willow
native
Tree, Shrub

SALICACEAE

Salix exigua
© 2015 Steve Matson
Salix exigua
© 2019 Barbara Brydolf
Salix exigua
© 2015 Steve Matson

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

Salix laevigata    Polished willow,  Red willow
native
Tree

SALICACEAE

Salix laevigata
© 2017 Steve Matson
Salix laevigata
© 2019 Barbara Brydolf
Salix laevigata
© 2022 Mark Gary

Salix lasiolepis    Arroyo willow
native
Tree, Shrub

SALICACEAE

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

Salix lucida ssp. lasiandra    Pacific willow
native
Tree

SALICACEAE

Salix lucida ssp. lasiandra
© 2021 Alice Cummings
Salix lucida ssp. lasiandra
© 2021 Diane Renshaw
Salix lucida ssp. lasiandra
© 2021 Ken Hickman

Sambucus mexicana    Blue elderberry
native
Tree, Shrub

VIBURNACEAE

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

native
Perennial grasslike herb

CYPERACEAE

Scirpus acutus var. occidentalis
© 2019 Steve Matson
Scirpus acutus var. occidentalis
© 2019 Steve Matson
Scirpus acutus var. occidentalis
© 2019 Steve Matson

Scirpus fluviatilis    River bulrush
native
Perennial grasslike herb

CYPERACEAE

Scirpus fluviatilis
© 2010 Louis-M. Landry
Scirpus fluviatilis
© 2010 Louis-M. Landry
Scirpus fluviatilis
© 2010 Louis-M. Landry

Scirpus maritimus    Alkali bulrush
native
Perennial grasslike herb

CYPERACEAE

Scirpus maritimus
© 2006 Steve Matson
Scirpus maritimus
© 2006 Steve Matson
Scirpus maritimus
© 2020 Ron Vanderhoff

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
© 2019 Ron Vanderhoff
Senecio vulgaris
© 2021 Toni Corelli

Setaria viridis    Green bristlegrass,  Green foxtail
non-native
Annual grass

POACEAE

Setaria viridis
© 2017 Ron Vanderhoff
Setaria viridis
© 2012 Zoya Akulova-Barlow
Setaria viridis
© 2021 David popp

Sibara virginica    Common rock cress
native
Annual, Perennial herb

BRASSICACEAE

Sibara virginica
© 2017 James Bailey
Sibara virginica
© © 2014 Zoya Akulova

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

Sinapis arvensis    Charlock mustard
invasive non-native
Annual herb

BRASSICACEAE

Sinapis arvensis
© 2020 Randy Huey
Sinapis arvensis
© 2022 Mike Russler
Sinapis arvensis
© 2023 Andy Ford

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

Sisyrinchium bellum    Western blue eyed grass
native
Perennial herb

IRIDACEAE

Sisyrinchium bellum
© 2024 Steve Conger
Sisyrinchium bellum
© 2024 Ron Vanderhoff
Sisyrinchium bellum
© 2019 Stacie Wolny

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

Solanum nigrum    Black nightshade
non-native
Annual herb

SOLANACEAE

Solanum nigrum
© 2019 Julian Geoghegan
Solanum nigrum
© 2019 Patrick Furtado
Solanum nigrum
© 2021 Mike Russler

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

Sorghum halepense    Johnsongrass
invasive non-native
Perennial grass

POACEAE

Sorghum halepense
© 2014 Robert F Norris
Sorghum halepense
© 2019 Jennifer Mo
Sorghum halepense
© 2020 Julie A. Kierstead

Spergularia bocconei    Boccone's sand spurry
non-native
Annual herb

CARYOPHYLLACEAE

Spergularia bocconei
© 2021 Ron Vanderhoff
Spergularia bocconei
© 2021 Ron Vanderhoff
Spergularia bocconei
© 2019 Ron Vanderhoff

Spergularia media    Coast sand spurry,  Sand spurry
non-native
Annual, Perennial herb

CARYOPHYLLACEAE

Spergularia media
© 2018 Vernon Smith
Spergularia media
© 2006 Luigi Rignanese
Spergularia media
© 2006 Luigi Rignanese

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

Spergularia villosa    Hairy sand spurrey,  Hairy sandspurry,  Villous sand spurry
non-native
Perennial herb

CARYOPHYLLACEAE

Spergularia villosa
© 2021 Ron Vanderhoff
Spergularia villosa
© 2011 Toni Corelli
Spergularia villosa
© 2021 Ron Vanderhoff

Stachys ajugoides var. rigida    Mexican hedgenettle
native
Perennial herb

LAMIACEAE

Stachys ajugoides var. rigida
© 2023 Mary Ann Machi
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

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

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
© 2021 Bryant Baker

Trifolium bifidum    Notch leaf clover,  Notchleaf clover,  Pinole clover
native
Annual herb

FABACEAE

Trifolium bifidum
© 2022 R.A. Chasey
Trifolium bifidum
© 2019 Alice Cummings
Trifolium bifidum
© 2022 R.A. Chasey

Trifolium depauperatum var. amplectens    Balloon sack clover,  Pale bladder clover,  Pale sack clover
native
Annual herb

FABACEAE

Trifolium depauperatum var. amplectens
© 2018 David Greenberger
Trifolium depauperatum var. amplectens
© 2013 Andrea Williams
Trifolium depauperatum var. amplectens
© 2018 David Greenberger

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
© 2022 Dana York

Trifolium microdon    Thimble clover,  Valparaiso clover
native
Annual herb

FABACEAE

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

Trifolium obtusiflorum    Clammy clover,  Creek clover
native
Annual herb

FABACEAE

Trifolium obtusiflorum
© 2019 Ron Vanderhoff
Trifolium obtusiflorum
© 2019 Ron Vanderhoff
Trifolium obtusiflorum
© 2019 Ron Vanderhoff

Trifolium repens    White clover
non-native
Perennial herb

FABACEAE

Trifolium repens
© 2017 Gary McDonald
Trifolium repens
© 2007 Steve Matson
Trifolium repens
© 2017 Gary McDonald

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

Triphysaria pusilla    Dwarf owl's clover,  Little owl's clover
native
Annual herb

OROBANCHACEAE

Triphysaria pusilla
© 2018 Steve Matson
Triphysaria pusilla
© 2018 Steve Matson
Triphysaria pusilla
© 2018 Steve Matson

Triteleia hyacinthina    White brodiaea,  Wild hyacinth,  White Brodiaea, Fool's Onion
native
Perennial herb

THEMIDACEAE

Triteleia hyacinthina
© 2008 Steve Matson
Triteleia hyacinthina
© 2008 Steve Matson
Triteleia hyacinthina
© 2008 Steve Matson

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
© 2021 Julian Geoghegan

Typha angustifolia    Nail rod,  Narrow leaf cattail,  Narrowleaf cattail
non-native
Perennial herb (aquatic)

TYPHACEAE

Typha angustifolia
© 2019 Ron Vanderhoff
Typha angustifolia
© 2021 Ron Vanderhoff
Typha angustifolia
© 2021 Ron Vanderhoff

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

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

Urtica urens    Annual stinging nettle,  Dwarf nettle
non-native
Annual herb

URTICACEAE

Urtica urens
© 2019 Gary McDonald
Urtica urens
© 2018 Ron Vanderhoff
Urtica urens
© 2018 Ron Vanderhoff

Verbascum blattaria    Moth mullein
non-native
Perennial herb

SCROPHULARIACEAE

Verbascum blattaria
© 2023 Alaine Arslan
Verbascum blattaria
© 2019 Marisa Persaud
Verbascum blattaria
© 2019 Patrick Furtado

Verbena bonariensis    Purple top vervain,  Purpletop vervain
invasive non-native
Annual, Biennial herb

VERBENACEAE

Verbena bonariensis
© 2014 Judy and Barry Breckling
Verbena bonariensis
© 2003 Gerald Carr
Verbena bonariensis
© 2003 Gerald Carr

Verbena hastata    Blue vervain,  Swamp verbena
native
Perennial herb

VERBENACEAE

Verbena hastata
© 2021 Amber Bedgood
Verbena hastata
© 2020 Sara Sweet
Verbena hastata
© 2020 Sara Sweet

Veronica peregrina ssp. xalapensis    Hairy purslane speedwell,  Neckweed,  Purslane speedwell
native
Annual herb

PLANTAGINACEAE

Veronica peregrina ssp. xalapensis
© 2020 Steve Matson
Veronica peregrina ssp. xalapensis
© 2020 Ron Vanderhoff
Veronica peregrina ssp. xalapensis
© 2020 Steve Matson

Veronica persica    Bird's eye speedwell,  Birdeye speedwell
non-native
Annual herb

PLANTAGINACEAE

Veronica persica
© 2019 Patrick Furtado
Veronica persica
© 2022 Bob Sweatt
Veronica persica
© 2022 Ron Vanderhoff

Vicia benghalensis    Purple vetch,  Reddish tufted vetch,  Vetch
non-native
Annual herb, Vine

FABACEAE

Vicia benghalensis
© 2010 Toni Corelli
Vicia benghalensis
© 2019 Diane Etchison
Vicia benghalensis
© 2024 R.A. Chasey

Vicia sativa ssp. nigra    Common vetch,  Garden vetch,  Smaller common vetch
non-native
Annual herb, Vine

FABACEAE

Vicia sativa ssp. nigra
© 2020 Ken Lunders
Vicia sativa ssp. nigra
© 2020 Ron Vanderhoff
Vicia sativa ssp. nigra
© 2020 Ron Vanderhoff

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

FABACEAE

Vicia sativa ssp. sativa
© 2007 Toni Corelli
Vicia sativa ssp. sativa
© 2020 Ron Vanderhoff
Vicia sativa ssp. sativa
© 2020 Ron Vanderhoff

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

VITACEAE

Vitis californica
© 2015 Bill Bogdanoff
Vitis californica
© 2013 Zoya Akulova
Vitis californica
© 2009 BOB CASE

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    Rattail sixweeks grass
invasive non-native
Annual grass

POACEAE

Vulpia myuros
© 2021 Aaron Echols
Vulpia myuros
© 2021 Ron Vanderhoff
Vulpia myuros
© 2022 John Rawlings

Xanthium spinosum    Spiny clotbur,  Spiny cockleburr
non-native
Annual herb

ASTERACEAE

Xanthium spinosum
© 2017 B.J. Dion
Xanthium spinosum
© 2021 Lynn Overtree
Xanthium spinosum
© 2017 B.J. Dion

Xanthium strumarium    Rough cockleburr
native
Annual herb

ASTERACEAE

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

Yabea microcarpa    California hedge parsley,  False carrot
native
Annual herb

APIACEAE

Yabea microcarpa
© 2021 Helen Hancock
Yabea microcarpa
© 2022 R.A. Chasey
Yabea microcarpa
© 2012 Toni Corelli