logo Calflora  Illustrated Plant List 
Redwood National Park plant list from NPS IRM
Humboldt County

 (2018-03-26)

Record Detail Nearby Surveys What Grows Here?
1095 PLANTS
Abelia Xgrandiflora    Glossy abelia
non-native
Perennial herb

CAPRIFOLIACEAE

Abelia Xgrandiflora
© 2016 Barbara Boethling
Abelia Xgrandiflora
© 2016 Barbara Boethling
Abelia Xgrandiflora
© 2016 Barbara Boethling

Abies grandis    Grand fir
native
Tree

PINACEAE

Abies grandis
© 2022 Asa B Spade
Abies grandis
© 2022 R.A. Chasey
Abies grandis
© 2022 Nicole Forte

Abronia latifolia    Coastal sand verbena,  Sand verbena,  Yellow sand verbena
native
Perennial herb

NYCTAGINACEAE

Abronia latifolia
© 2016 Steve Matson
Abronia latifolia
© 2016 Steve Matson
Abronia latifolia
© 2016 Steve Matson

Abronia umbellata    Beach sand verbena,  Pink sand verbena,  Purple sand verbena
native
Perennial herb

NYCTAGINACEAE

Abronia umbellata
© 2021 Meghan Lindt
Abronia umbellata
© 2018 Ken Hickman
Abronia umbellata
© 2018 Mary Conway

Abronia umbellata var. breviflora    Pink sand-verbena
rare native
Perennial herb

NYCTAGINACEAE

Abronia umbellata var. breviflora
© 2021 Scot Loring
Abronia umbellata var. breviflora
© 2021 Scot Loring
Abronia umbellata var. breviflora
© 2023 Mary Ann Machi

Acacia dealbata    Silver wattle
invasive non-native
Tree, Shrub

FABACEAE

Acacia dealbata
© 2019 Gary McDonald
Acacia dealbata
© 2023 Ron Vanderhoff
Acacia dealbata
© 2019 Gary McDonald

Acacia mearnsii    Black wattle
non-native
Tree, Shrub

FABACEAE

Acacia mearnsii
© 2013 Ron Vanderhoff
Acacia mearnsii
© 2019 Ron Vanderhoff
Acacia mearnsii
© 2019 Ron Vanderhoff

Acer circinatum    Vine maple
native
Tree, Shrub

SAPINDACEAE

Acer circinatum
© 2021 Julie A. Kierstead
Acer circinatum
© 2018 Kyle Johnson
Acer circinatum
© 2016 Steve Matson

Acer macrophyllum    Big leaf maple,  Bigleaf maple
native
Tree

SAPINDACEAE

Acer macrophyllum
© 2016 Steve Matson
Acer macrophyllum
© 2018 Steve Matson
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

Achlys triphylla    Sweet after death
native
Perennial herb

BERBERIDACEAE

Achlys triphylla
© 2020 Steve Conger
Achlys triphylla
© 2021 Dana York
Achlys triphylla
© 2019 Cynthia Powell

Achlys triphylla ssp. tryphylla    Sweet after death
native
Perennial herb

BERBERIDACEAE

Achlys triphylla ssp. tryphylla
© 2020 Steve Conger
Achlys triphylla ssp. tryphylla
© 2021 Dana York
Achlys triphylla ssp. tryphylla
© 2019 Cynthia Powell

Acmispon americanus var. americanus    American bird's foot trefoil,  American trefoil,  Spanish lotus
native
Annual herb

FABACEAE

Acmispon americanus var. americanus
© 2015 Steve Matson
Acmispon americanus var. americanus
© 2015 Steve Matson
Acmispon americanus var. americanus
© 2015 Steve Matson

Acmispon parviflorus    Hill lotus
native
Annual herb

FABACEAE

Acmispon parviflorus
© 2008 Steve Matson
Acmispon parviflorus
© 2005 Steve Matson
Acmispon parviflorus
© 2008 Steve Matson

Actaea rubra    baneberry,  Western baneberry
native
Perennial herb

RANUNCULACEAE

Actaea rubra
© 2014 Steve Matson
Actaea rubra
© 2014 Steve Matson
Actaea rubra
© 2002 Gerald Carr

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

Adiantum aleuticum    Five finger fern
native
Fern

PTERIDACEAE

Adiantum aleuticum
© 2013 BOB CASE
Adiantum aleuticum
© 2018 Neal Kramer
Adiantum aleuticum
© 2021 R.A. Chasey

Adiantum pedatum    Five finger fern
native
Fern

PTERIDACEAE

Adiantum pedatum
© 2013 BOB CASE
Adiantum pedatum
© 2018 Neal Kramer
Adiantum pedatum
© 2021 R.A. Chasey

Ageratina occidentalis    Western eupatorium,  Western joepiweed,  Western snakeroot
native
Perennial herb

ASTERACEAE

Ageratina occidentalis
© 2019 Steve Matson
Ageratina occidentalis
© 2019 Steve Matson
Ageratina occidentalis
© 2019 Steve Matson

Agoseris apargioides var. eastwoodiae    Beach dandelion,  Eastwood's seaside agoseris,  Woolly goat chicory
native
Perennial herb

ASTERACEAE

Agoseris apargioides var. eastwoodiae
© 2017 James Gonsman
Agoseris apargioides var. eastwoodiae
© 2017 Adam Chasey
Agoseris apargioides var. eastwoodiae
© 2017 John Doyen

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

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

POACEAE

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

Agrostis capillaris    Colonial bentgrass
non-native
Perennial grass

POACEAE

Agrostis capillaris
© 2005 Steve Matson
Agrostis capillaris
© 2005 Steve Matson
Agrostis capillaris
© 2005 Steve Matson

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

Agrostis hallii    Hall redtop,  Hall's bent grass,  Hall's bentgrass
native
Perennial grass

POACEAE

Agrostis hallii
© 2005 Steve Matson
Agrostis hallii
© 2005 Steve Matson
Agrostis hallii
© 2023 John Rawlings

Agrostis hallii var. hallii    Hall redtop,  Hall's bent grass,  Hall's bentgrass
native
Perennial grass

POACEAE

Agrostis hallii var. hallii
© 2005 Steve Matson
Agrostis hallii var. hallii
© 2005 Steve Matson
Agrostis hallii var. hallii
© 2023 John Rawlings

Agrostis idahoensis    Colonial bentgrass,  Idaho bentgrass
native
Perennial grass

POACEAE

Agrostis idahoensis
© 2005 Steve Matson
Agrostis idahoensis
© 2005 Steve Matson
Agrostis idahoensis
© 2020 John Rawlings

Agrostis microphylla    Little leaf bentgrass,  Small leaf bentgrass,  Small leaved bentgrass
native
Annual grass

POACEAE

Agrostis microphylla
© 2023 John Rawlings
Agrostis microphylla
© 2023 John Rawlings
Agrostis microphylla
© 2023 John Rawlings

Agrostis stolonifera    Creeping bentgrass,  Redtop
invasive non-native
Perennial grass

POACEAE

Agrostis stolonifera
© 2018 Rachelle Gray
Agrostis stolonifera
© 2018 Rachelle Gray
Agrostis stolonifera
© 2018 Rachelle Gray

Agrostis tenuis var. aristata    Colonial bentgrass
non-native
Perennial grass

POACEAE

Agrostis tenuis var. aristata
© 2005 Steve Matson
Agrostis tenuis var. aristata
© 2005 Steve Matson
Agrostis tenuis var. aristata
© 2005 Steve Matson

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

Aira praecox    Yellow hairgrass
invasive non-native
Annual grass

POACEAE

Aira praecox
© 2018 Ken Hickman
Aira praecox
© 2022 John Rawlings
Aira praecox
© 2010 National Park Service

Allium   


Allium falcifolium    Scytheleaf onion,  Sickle leaf onion
native
Perennial herb (bulb)

ALLIACEAE

Allium falcifolium
© 2011 Steve Matson
Allium falcifolium
© 2022 Steve Matson
Allium falcifolium
© 2011 Steve Matson

Allium triquetrum    Three cornered leek,  Threecorner leek,  White flowered onion
invasive non-native
Perennial herb (bulb)

ALLIACEAE

Allium triquetrum
© 2017 Steve Matson
Allium triquetrum
© 2017 Steve Matson
Allium triquetrum
© 2017 Steve Matson

Allotropa virgata    Candystriped allotropa,  Sugar stick,  Sugarstick
native
Perennial herb (mycoparasitic)

ERICACEAE

Allotropa virgata
© 2006 Steve Matson
Allotropa virgata
© 2006 Steve Matson
Allotropa virgata
© 2006 Steve Matson

Alnus rhombifolia    White alder
native
Tree

BETULACEAE

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

Alnus rubra    Oregon alder,  Red alder
native
Tree, Shrub

BETULACEAE

Alnus rubra
© 2023 Michael Perlmutter
Alnus rubra
© 2021 R.A. Chasey
Alnus rubra
© 2021 R.A. Chasey

Alopecurus aequalis    Short awned foxtail,  Sonoma alopecurus,  Water foxtail
native
Perennial grass

POACEAE

Alopecurus aequalis
© 2003 Steve Matson
Alopecurus aequalis
© 2003 Steve Matson
Alopecurus aequalis
© 2003 Steve Matson

Alopecurus geniculatus    Marsh foxtail,  Water foxtail
native
Perennial grass

POACEAE

Alopecurus geniculatus
© 2013 Robert Sikora
Alopecurus geniculatus
© 2021 Aaron Arthur
Alopecurus geniculatus
© 2009 Trent M. Draper


Amaryllis belladonna    Belladonna lily
non-native
Perennial herb

AMARYLLIDACEAE

Amaryllis belladonna
© 2016 Camille Nowell
Amaryllis belladonna
© 2023 Ron Vanderhoff
Amaryllis belladonna
© 2022 Ron Vanderhoff

Ambrosia chamissonis    Beach bur,  Silver beachweed
native
Perennial herb

ASTERACEAE

Ambrosia chamissonis
© 2016 Steve Matson
Ambrosia chamissonis
© 2016 Steve Matson
Ambrosia chamissonis
© 2016 Steve Matson

Amelanchier alnifolia    Saskatoon serviceberry,  Service berry
native
Shrub

ROSACEAE

Amelanchier alnifolia
© 2020 Bob Sweatt
Amelanchier alnifolia
© 2020 Bob Sweatt
Amelanchier alnifolia
© 2020 Bob Sweatt

Amelanchier alnifolia var. semiintegrifolia    Pacific serviceberry,  Service berry
native
Shrub

ROSACEAE

Amelanchier alnifolia var. semiintegrifolia
© 2021 Steve Matson
Amelanchier alnifolia var. semiintegrifolia
© 2021 Steve Matson
Amelanchier alnifolia var. semiintegrifolia
© 2021 Steve Matson

Amelanchier pallida    Pale serviceberry,  Pallid serviceberry,  Sarvis
native
Shrub

ROSACEAE

Amelanchier pallida
© 2011 John Doyen
Amelanchier pallida
© 2011 John Doyen
Amelanchier pallida
© 2010 Margo Bors

Amelanchier utahensis    Pale leaved serviceberry,  Service berry,  Utah service berry
native
Shrub

ROSACEAE

Amelanchier utahensis
© 2022 R.A. Chasey
Amelanchier utahensis
© 2021 Robert Steers
Amelanchier utahensis
© 2022 R.A. Chasey

Ammophila arenaria    Beachgrass,  European beach grass,  European beachgrass
invasive non-native
Perennial grass

POACEAE

Ammophila arenaria
© 2016 Steve Matson
Ammophila arenaria
© 2016 Steve Matson
Ammophila arenaria
© 2016 Steve Matson

Amsinckia intermedia    Common fiddleneck
native
Annual herb

BORAGINACEAE

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

Amsinckia lycopsoides    Bugloss fiddleneck,  Tarweed fiddleneck
native
Annual herb

BORAGINACEAE

Amsinckia lycopsoides
© 2021 David popp
Amsinckia lycopsoides
© 2023 Catherine Chang
Amsinckia lycopsoides
© 2022 Catherine Chang

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

Anaphalis margaritacea    Pearly everlasting
native
Perennial herb

ASTERACEAE

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

Anemone deltoidea    Columbian windflower
native
Perennial herb

RANUNCULACEAE

Anemone deltoidea
© 2011 Steve Matson
Anemone deltoidea
© 2011 Steve Matson
Anemone deltoidea
© 2021 Steve Matson

Anemone oregana    Blue windflower,  Oregon anemone,  Western wood anenome
native
Perennial herb

RANUNCULACEAE

Anemone oregana
© 2011 Steve Matson
Anemone oregana
© 2011 Steve Matson
Anemone oregana
© 2011 Steve Matson

Anemone oregana var. oregana    Blue windflower
native
Perennial herb

RANUNCULACEAE

Anemone oregana var. oregana
© 2008 Gerald Carr
Anemone oregana var. oregana
© 2023 Dana York
Anemone oregana var. oregana
© 2023 Dana York

Anethum graveolens    Dill
non-native
Annual herb

APIACEAE

Anethum graveolens
© 2011 Louis-M. Landry
Anethum graveolens
© 2011 Louis-M. Landry

Angelica genuflexa    Kneeling angelica
native
Perennial herb

APIACEAE

Angelica genuflexa
© 2014 Steve Matson
Angelica genuflexa
© 2014 Steve Matson
Angelica genuflexa
© 2014 Steve Matson

Angelica hendersonii    Coast angelica,  Henderson's angelica
native
Perennial herb

APIACEAE

Angelica hendersonii
© 2020 Suzanne L. Weakley
Angelica hendersonii
© 2021 Jamie Spielmann
Angelica hendersonii
© 2022 Diana Wahl

Angelica tomentosa    Woolly angelica
native
Perennial herb

APIACEAE

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

Angelica tomentosa var. hendersonii    Coast angelica,  Henderson's angelica
native
Perennial herb

APIACEAE

Angelica tomentosa var. hendersonii
© 2020 Suzanne L. Weakley
Angelica tomentosa var. hendersonii
© 2021 Jamie Spielmann
Angelica tomentosa var. hendersonii
© 2022 Diana Wahl

Angelica tomentosa var. tomentosa    Woolly angelica
native
Perennial herb

APIACEAE

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

Anisocarpus madioides    Woodland madia
native
Perennial herb

ASTERACEAE

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

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

Anthoxanthum aristatum    Annual vernal grass,  Annual vernalgrass
non-native
Annual grass

POACEAE

Anthoxanthum aristatum
© 2006 Gerald Carr
Anthoxanthum aristatum
© 2006 Gerald Carr
Anthoxanthum aristatum
© 2014 Zoya Akulova (ssp. aristatum)

Anthoxanthum occidentale    Califonria sweet grass,  Vanilla grass
native
Perennial grass

POACEAE

Anthoxanthum occidentale
© 2024 Suzanne L. Weakley
Anthoxanthum occidentale
© 2022 R.A. Chasey
Anthoxanthum occidentale
© 2022 John Rawlings

Anthoxanthum odoratum    Sweet vernal grass,  Sweet vernalgrass
invasive non-native
Annual, Perennial grass

POACEAE

Anthoxanthum odoratum
© 2017 Steve Matson
Anthoxanthum odoratum
© 2017 Steve Matson
Anthoxanthum odoratum
© 2017 Steve Matson

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

ROSACEAE

Aphanes occidentalis
© 2019 Ron Vanderhoff
Aphanes occidentalis
© 2017 Ron Vanderhoff
Aphanes occidentalis
© 2023 R.A. Chasey

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

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

RANUNCULACEAE

Aquilegia formosa
© 2022 Charles Russell
Aquilegia formosa
© 2019 Diane Etchison
Aquilegia formosa
© 2022 David Strauch

Aquilegia formosa var. truncata    Crimson columbine,  Sitka columbine,  Western columbine
native
Perennial herb

RANUNCULACEAE

Aquilegia formosa var. truncata
© 2022 Charles Russell
Aquilegia formosa var. truncata
© 2019 Diane Etchison
Aquilegia formosa var. truncata
© 2022 David Strauch

Arabis glabra    Tower rockcress
native
Perennial herb

BRASSICACEAE

Arabis glabra
© 2021 David Wolfson
Arabis glabra
© 2021 Mike Russler
Arabis glabra
© 2020 Chico Hiking Association

Arabis glabra var. glabra    Tower rockcress
native
Perennial herb

BRASSICACEAE

Arabis glabra var. glabra
© 2021 David Wolfson
Arabis glabra var. glabra
© 2021 Mike Russler
Arabis glabra var. glabra
© 2020 Chico Hiking Association

Arabis hirsuta var. glabrata    Eschscholtz's hairy rockcress
native
Perennial herb

BRASSICACEAE

Arabis hirsuta var. glabrata
© 2007 Gerald Carr
Arabis hirsuta var. glabrata
© 2016 Steve Matson
Arabis hirsuta var. glabrata
© 2007 Gerald Carr

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

Araucaria araucana    Small Tree-Mallow


Arbutus menziesii    Madrono,  Pacific madrone
native
Tree

ERICACEAE

Arbutus menziesii
© 2021 Cynthia Powell
Arbutus menziesii
© 2021 R.A. Chasey
Arbutus menziesii
© 2021 Hunter Breck

Arbutus unedo    Strawberry tree
non-native
Tree

ERICACEAE

Arbutus unedo
© 2018 Catherine Capone
Arbutus unedo
© 2018 Catherine Capone
Arbutus unedo
© 2018 Catherine Capone

Arceuthobium campylopodum    Golden mistletoe,  Pine dwarf mistletoe,  Pine mistletoe
native
Perennial herb (parasitic)

VISCACEAE

Arceuthobium campylopodum
© 2016 Richard Spjut
Arceuthobium campylopodum
© 2020 Charles Russell
Arceuthobium campylopodum
© 2021 Mikhela Aiken

Arctium minus    Common burdock,  Lesser burdock,  Small burdock
non-native
Perennial herb

ASTERACEAE

Arctium minus
© 2018 Melissa Brooks Kraemer
Arctium minus
© 2018 Melissa Brooks Kraemer
Arctium minus
© 2021 Donald Burk

Arctostaphylos canescens    Hoary manzanita
native
Shrub

ERICACEAE

Arctostaphylos canescens
© 2015 Robert Steers
Arctostaphylos canescens
© 2019 Elliot Gunnison
Arctostaphylos canescens
© 2018 Cynthia Powell

Arctostaphylos columbiana    Hairy manzanita,  Redwood manzanita
native
Tree, Shrub

ERICACEAE

Arctostaphylos columbiana
© 2020 R.A. Chasey
Arctostaphylos columbiana
© 2023 Dana York
Arctostaphylos columbiana
© 2020 R.A. Chasey

Arctostaphylos hispidula    Howell's manzanita
rare native
Shrub

ERICACEAE

Arctostaphylos hispidula
© 2023 Dana York
Arctostaphylos hispidula
© 2019 Adam Chasey
Arctostaphylos hispidula
© 2023 Dana York

Arctostaphylos manzanita    Common manzanita
native
Shrub

ERICACEAE

Arctostaphylos manzanita
© 2022 Cynthia Powell
Arctostaphylos manzanita
© 2019 R.A. Chasey
Arctostaphylos manzanita
© 2019 Julie Kierstead Nelson

Arctostaphylos nevadensis    Pine mat manzanita,  Pinemat manzanita
native
Shrub

ERICACEAE

Arctostaphylos nevadensis
© 2015 Steve Matson
Arctostaphylos nevadensis
© 2005 Steve Matson
Arctostaphylos nevadensis
© 2005 Steve Matson

native
Shrub

ERICACEAE

Arctostaphylos nevadensis ssp. nevadensis
© 2015 Steve Matson
Arctostaphylos nevadensis ssp. nevadensis
© 2005 Steve Matson
Arctostaphylos nevadensis ssp. nevadensis
© 2015 Steve Matson

Arctostaphylos uva-ursi    Bearberry manzanita,  Kinnikinnick
native
Shrub

ERICACEAE

Arctostaphylos uva-ursi
© 2016 Steve Matson
Arctostaphylos uva-ursi
© 2016 Steve Matson
Arctostaphylos uva-ursi
© 2016 Steve Matson

Arctostaphylos viscida    Sticky whiteleaf manzanita
native
Tree, Shrub

ERICACEAE

Arctostaphylos viscida
© 2011 Steve Matson
Arctostaphylos viscida
© 2011 Steve Matson
Arctostaphylos viscida
© 2011 Steve Matson

Arenaria douglasii    Douglas' sandwort,  Douglas' stitchwort
native
Annual herb

CARYOPHYLLACEAE

Arenaria douglasii
© 2020 David Self
Arenaria douglasii
© 2018 James Gonsman
Arenaria douglasii
© 2010 Michael Mitchell

Armeria maritima ssp. californica    California sea pink,  California seapink,  Sea pink or thrift
native
Perennial herb

PLUMBAGINACEAE

Armeria maritima ssp. californica
© 2016 Steve Matson
Armeria maritima ssp. californica
© 2016 Steve Matson
Armeria maritima ssp. californica
© 2016 Steve Matson

Arnica cordifolia    Heart leaved arnica,  Heartleaf arnica
native
Perennial herb

ASTERACEAE

Arnica cordifolia
© 2003 Steve Matson
Arnica cordifolia
© 2003 Steve Matson
Arnica cordifolia
© 2006 Keir Morse

Arnica spathulata    Klamath arnica
rare native
Perennial herb (rhizomatous)

ASTERACEAE

Arnica spathulata
© 2007 Gerald Carr
Arnica spathulata
© 2023 Dana York
Arnica spathulata
© 2023 Dana York

Arnica Xdiversifolia    Sticky leaf arnica
native
Perennial herb

ASTERACEAE

Arnica Xdiversifolia
© 2012 Dana York
Arnica Xdiversifolia
© 2012 Dana York
Arnica Xdiversifolia
© 2011 Dana York

Arrhenatherum elatius    Tall oatgrass
non-native
Perennial grass

POACEAE

Arrhenatherum elatius
© 2020 Doug Allshouse
Arrhenatherum elatius
© 2021 John Rawlings
Arrhenatherum elatius
© 2019 Julian Geoghegan

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

Artemisia suksdorfii    Coastal mugwort
native
Perennial herb

ASTERACEAE

Artemisia suksdorfii
© 2020 Susan McDougall
Artemisia suksdorfii
© 2019 Jonathan Lee
Artemisia suksdorfii
© 2018 Alison Gardner

native
Perennial herb

ROSACEAE

Aruncus dioicus var. acuminatus
© 2014 Matt Berger
Aruncus dioicus var. acuminatus
© 2019 Richard Spjut
Aruncus dioicus var. acuminatus
© 2013 John Doyen

Asarum caudatum    Creeping wild ginger,  Longtail wild ginger
native
Perennial herb

ARISTOLOCHIACEAE

Asarum caudatum
© 2023 Dana York
Asarum caudatum
© 2022 Jamie Spielmann
Asarum caudatum
© 2016 Richard Chasey

Aspidotis densa    Cliffbrake,  Lace fern
native
Fern

PTERIDACEAE

Aspidotis densa
© 2022 Christopher Collier
Aspidotis densa
© 2019 Matt Berger
Aspidotis densa
© 2015 James Gonsman

Aster breweri    Brewer's aster
native
Perennial herb

ASTERACEAE

Aster breweri
© 2009 Keir Morse
Aster breweri
© 2019 Bob Sweatt
Aster breweri
© 2017 David popp

Aster spathulatus    Western mountain aster
native
Perennial herb

ASTERACEAE

Aster spathulatus
© 2013 Steve Matson
Aster spathulatus
© 2016 Steve Matson
Aster spathulatus
© 2013 Steve Matson

Asyneuma prenanthoides    California harebell
native
Perennial herb

CAMPANULACEAE

Asyneuma prenanthoides
© 2015 Steve Matson
Asyneuma prenanthoides
© 2015 Steve Matson
Asyneuma prenanthoides
© 2015 Steve Matson

Athyrium filix-femina    Common ladyfern
native
Fern

ATHYRIACEAE

Athyrium filix-femina
© 2019 Julie Kierstead Nelson
Athyrium filix-femina
© 2021 R.A. Chasey
Athyrium filix-femina
© 2021 R.A. Chasey

Athyrium filix-femina var. cyclosorum    Common lady fern,  Subarctic lady fern,  Western lady fern
native
Fern

ATHYRIACEAE

Athyrium filix-femina var. cyclosorum
© 2021 R.A. Chasey
Athyrium filix-femina var. cyclosorum
© 2018 David popp
Athyrium filix-femina var. cyclosorum
© 2021 John Rawlings

Atriplex leucophylla    Beach salt bush,  Beach saltbush,  Sea scale
native
Perennial herb

CHENOPODIACEAE

Atriplex leucophylla
© 2006 Avis Boutell
Atriplex leucophylla
© 2019 Diane Etchison
Atriplex leucophylla
© 2020 Ken Hickman

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

Avena sativa    Common oats,  Cultivated oats,  Wild oat
non-native
Annual, Perennial grass

POACEAE

Avena sativa
© 2016 Cynthia Powell
Avena sativa
© 2021 John Rawlings
Avena sativa
© 2006 Louis-M. Landry

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

native
Shrub

ASTERACEAE

Baccharis pilularis ssp. consanguinea
© 2009 Toni Corelli
Baccharis pilularis ssp. consanguinea
© 2022 John Doyen
Baccharis pilularis ssp. consanguinea
© 2018 Ron Vanderhoff

Bambusa   


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

Barbarea orthoceras var. dolichocarpa    American rocket,  American wintercress,  Erectpod wintercress
native
Perennial herb

BRASSICACEAE

Barbarea orthoceras var. dolichocarpa
© 2015 James Gonsman
Barbarea orthoceras var. dolichocarpa
© 2019 Diane Etchison
Barbarea orthoceras var. dolichocarpa
© 2020 Diane Etchison

Bellis perennis    English daisy,  English lawn daisy
invasive non-native
Perennial herb

ASTERACEAE

Bellis perennis
© 2019 Ron Vanderhoff
Bellis perennis
© 2023 Donald Burk
Bellis perennis
© 2020 Bob Sweatt

Berberis aquifolium    Mountain grape,  Mountaingrape,  Oregon grape
native
Shrub

BERBERIDACEAE

Berberis aquifolium
© 2017 Steve Matson
Berberis aquifolium
© 2017 Steve Matson
Berberis aquifolium
© 2021 Steve Matson

Berberis aquifolium var. aquifolium    Oregon grape,  Piper's barberry
native
Shrub

BERBERIDACEAE

Berberis aquifolium var. aquifolium
© 2017 Steve Matson
Berberis aquifolium var. aquifolium
© 2017 Steve Matson
Berberis aquifolium var. aquifolium
© 2017 Steve Matson

Berberis aquifolium var. repens    Creeping oregon grape,  Dwarf mahonia
native
Shrub

BERBERIDACEAE

Berberis aquifolium var. repens
© 2021 Steve Matson
Berberis aquifolium var. repens
© 2005 Steve Matson
Berberis aquifolium var. repens
© 2005 Steve Matson

Berberis darwinii    Darwin's berberis
invasive non-native
Shrub

BERBERIDACEAE

Berberis darwinii
© 2018 Abbot Chambers
Berberis darwinii
© 2016 Greg O'Connell
Berberis darwinii
© 2022 David Strauch

Berberis nervosa    Cascades oregon grape,  Oregongrape
native
Shrub

BERBERIDACEAE

Berberis nervosa
© 2011 Steve Matson
Berberis nervosa
© 2011 Steve Matson
Berberis nervosa
© 2011 Steve Matson

Berberis pinnata    California barberry,  Coast barberry,  Shiny leaf mahonia
native
Shrub

BERBERIDACEAE

Berberis pinnata
© 2021 Ron Vanderhoff
Berberis pinnata
© 2022 Alice Cummings
Berberis pinnata
© 2021 Ron Vanderhoff

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

Blechnum spicant    Deer fern
native
Fern

BLECHNACEAE

Blechnum spicant
© 2018 Hunter Breck
Blechnum spicant
© 2022 Christine Kelly
Blechnum spicant
© 2018 Adam Chasey

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

SAXIFRAGACEAE

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

Boykinia major    Large boykinia,  Mountain boykinia,  Stream boykinia
native
Perennial herb

SAXIFRAGACEAE

Boykinia major
© 2021 Mike Russler
Boykinia major
© 2018 Julie Kierstead Nelson
Boykinia major
© 2021 Mike Russler

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

Brassica campestris    Field mustard,  Turnip
invasive non-native
Annual herb

BRASSICACEAE

Brassica campestris
© 2017 Barbara Boethling
Brassica campestris
© 2017 Cynthia Powell
Brassica campestris
© 2018 Angelique Herman

Brassica nigra    Black mustard
invasive non-native
Annual herb

BRASSICACEAE

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

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

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    Harvest brodiaea
native
Perennial herb

THEMIDACEAE

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

Brodiaea ida-maia    Firecracker brodiaea,  Firecracker flower
native
Perennial herb

THEMIDACEAE

Brodiaea ida-maia
© 2008 Steve Matson
Brodiaea ida-maia
© 2023 Melissa Harbert
Brodiaea ida-maia
© 2019 Steve Laymon

Brodiaea terrestris    Dwarf brodiaea
native
Perennial herb

THEMIDACEAE

Brodiaea terrestris
© 2023 Steve Conger
Brodiaea terrestris
© 2023 Steve Conger
Brodiaea terrestris
© 2019 Mary Gerbic

Bromus carinatus    California brome
native
Perennial grass

POACEAE

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

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 carinatus var. maritimus    Maritime brome
native
Perennial grass

POACEAE

Bromus carinatus var. maritimus
© 2020 Ken Hickman
Bromus carinatus var. maritimus
© 2016 Richard Chasey
Bromus carinatus var. maritimus
© 2017 Toni Corelli

Bromus catharticus var. elatus    Chilean brome
non-native
Annual, Perennial grass

POACEAE

Bromus catharticus var. elatus
© 2006 Steve Matson
Bromus catharticus var. elatus
© 2006 Steve Matson
Bromus catharticus var. elatus
© 2006 Steve Matson

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

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

POACEAE

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

Bromus inermis ssp. inermis    Smooth brome
non-native
Perennial grass

POACEAE

Bromus inermis ssp. inermis
© 2011 Ramona Robison
Bromus inermis ssp. inermis
© 2019 Manzanita Dictionary
Bromus inermis ssp. inermis
© 2019 Manzanita Dictionary

non-native
Perennial grass

POACEAE

Bromus inermis ssp. inermis var. inermis
© 2011 Ramona Robison
Bromus inermis ssp. inermis var. inermis
© 2019 Manzanita Dictionary
Bromus inermis ssp. inermis var. inermis
© 2019 Manzanita Dictionary

Bromus maritimus    Maritime brome
native
Perennial grass

POACEAE

Bromus maritimus
© 2020 Ken Hickman
Bromus maritimus
© 2016 Richard Chasey
Bromus maritimus
© 2017 Toni Corelli

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

POACEAE

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

Bromus sterilis    Poverty brome,  Sterile brome
non-native
Annual grass

POACEAE

Bromus sterilis
© 2021 John Rawlings
Bromus sterilis
© 2023 John Rawlings
Bromus sterilis
© 2023 John Rawlings

Bromus vulgaris    Columbia brome,  Common brome
native
Annual grass

POACEAE

Bromus vulgaris
© 2023 David popp
Bromus vulgaris
© 2023 Robert Steers
Bromus vulgaris
© 2023 David popp

Buddleja davidii    Butterfly bush,  Summer lilac
invasive non-native
Tree, Shrub

SCROPHULARIACEAE

Buddleja davidii
© 2021 Ron Vanderhoff
Buddleja davidii
© 2021 Ron Vanderhoff
Buddleja davidii
© 2021 Ron Vanderhoff

Buxus microphylla    Small Tree-Mallow


Cakile edentula    American searocket,  Sea rocket
non-native
Annual herb

BRASSICACEAE

Cakile edentula
© 2021 Friends of Five Creeks volunteers
Cakile edentula
© 2006 Louis-M. Landry
Cakile edentula
© 2010 Louis-M. Landry

Cakile maritima    European searocket,  Sea rocket
invasive non-native
Annual herb

BRASSICACEAE

Cakile maritima
© 2019 Diane Etchison
Cakile maritima
© 2021 R.A. Chasey
Cakile maritima
© 2019 Diane Etchison

Calamagrostis nutkaensis    Pacific reedgrass
native
Perennial grass

POACEAE

Calamagrostis nutkaensis
© 2018 Ken Hickman
Calamagrostis nutkaensis
© 2019 Cynthia Powell
Calamagrostis nutkaensis
© 2019 Ken Hickman

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 heterophylla    Varied leaved water starwort,  Water starwort
native
Perennial herb

PLANTAGINACEAE

Callitriche heterophylla
© 2012 Ron Vanderhoff
Callitriche heterophylla
© 2008 Neal Kramer
Callitriche heterophylla
© 2005 Steve Matson

Callitriche heterophylla var. bolanderi    Bolander's water starwort
native
Annual herb

PLANTAGINACEAE

Callitriche heterophylla var. bolanderi
© 2023 R.A. Chasey
Callitriche heterophylla var. bolanderi
© 2007 Keir Morse
Callitriche heterophylla var. bolanderi
© 2023 R.A. Chasey

Callitriche stagnalis    Pond water starwort
non-native
Annual herb (aquatic)

PLANTAGINACEAE

Callitriche stagnalis
© 2010 Gerald Carr
Callitriche stagnalis
© 2010 Gerald Carr
Callitriche stagnalis
© 2010 Gerald Carr

Calochortus tolmiei    Hairy star tulip,  Tolmie star tulip,  Tolmie's star tulip
native
Perennial herb

LILIACEAE

Calochortus tolmiei
© 2020 Steve Conger
Calochortus tolmiei
© 2022 Jamie Spielmann
Calochortus tolmiei
© 2020 Mary Ann Machi

Caltha leptosepala    White marsh marigold
native
Perennial herb

RANUNCULACEAE

Caltha leptosepala
© 2018 Art Clark
Caltha leptosepala
© 2019 Steve Matson
Caltha leptosepala
© 2021 Mike Russler

Caltha leptosepala var. biflora    White marsh marigold
native
Perennial herb

RANUNCULACEAE

Caltha leptosepala var. biflora
© 2018 Art Clark
Caltha leptosepala var. biflora
© 2019 Steve Matson
Caltha leptosepala var. biflora
© 2021 Mike Russler

Calypso bulbosa    Fairy slipper,  Fairyslipper orchid
native
Perennial herb

ORCHIDACEAE

Calypso bulbosa
© 2023 Stephanie Penn
Calypso bulbosa
© 2022 Marcus Tamura
Calypso bulbosa
© 2020 Mary Ann Machi

native
Perennial herb

ORCHIDACEAE

Calypso bulbosa var. occidentalis
© 2018 Ken Hickman
Calypso bulbosa var. occidentalis
© 2021 Nora Bales
Calypso bulbosa var. occidentalis
© 2008 Keir Morse

Calystegia atriplicifolia    Nightblooming false bindweed
native
Perennial herb (rhizomatous)

CONVOLVULACEAE

Calystegia atriplicifolia
© 2020 Lilyanne Price
Calystegia atriplicifolia
© 2020 Lilyanne Price
Calystegia atriplicifolia
© 2021 David popp

Calystegia atriplicifolia ssp. buttensis    Butte county morning glory
rare native
Perennial herb (rhizomatous)

CONVOLVULACEAE

Calystegia atriplicifolia ssp. buttensis
© 2020 Lilyanne Price
Calystegia atriplicifolia ssp. buttensis
© 2008 John Dittes
Calystegia atriplicifolia ssp. buttensis
© 2008 Sierra Pacific Industries

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
© 2019 Chico Hiking Association

Calystegia soldanella    Beach morning glory,  Beach morningglory
native
Perennial herb

CONVOLVULACEAE

Calystegia soldanella
© 2020 David Greenberger
Calystegia soldanella
© 2021 Hayley Ross
Calystegia soldanella
© 2024 Cynthia Powell

Camassia leichtlinii ssp. suksdorfii    Suksdorf's large camas
native
Perennial herb

AGAVACEAE

Camassia leichtlinii ssp. suksdorfii
© 2019 Chasey
Camassia leichtlinii ssp. suksdorfii
© 2019 David Greenberger
Camassia leichtlinii ssp. suksdorfii
© 2023 Jim Xerogeanes

Camellia japonica    Small Tree-Mallow


Camissonia cheiranthifolia    Beach evening-primrose
native
Perennial herb

ONAGRACEAE

Camissonia cheiranthifolia
© 2019 Patrick Furtado
Camissonia cheiranthifolia
© 2021 Meghan Lindt
Camissonia cheiranthifolia
© 2021 Rosaleen Murphy

native
Perennial herb

ONAGRACEAE

Camissonia cheiranthifolia ssp. cheiranthifolia
© 2019 Patrick Furtado
Camissonia cheiranthifolia ssp. cheiranthifolia
© 2021 Meghan Lindt
Camissonia cheiranthifolia ssp. cheiranthifolia
© 2021 Rosaleen Murphy

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 breweri var. breweri    Brewer's bitter cress,  Brewer's bittercress
native
Perennial herb

BRASSICACEAE

Cardamine breweri var. breweri
© 2005 Steve Matson
Cardamine breweri var. breweri
© 2020 Bob Sweatt
Cardamine breweri var. breweri
© 2005 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 integrifolia    California toothwort,  milkmaids
native
Perennial herb

BRASSICACEAE

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

Cardionema ramosissimum    Sand mat,  Sandcarpet
native
Perennial herb

CARYOPHYLLACEAE

Cardionema ramosissimum
© 2023 Ron Vanderhoff
Cardionema ramosissimum
© 2015 Michael Mitchell
Cardionema ramosissimum
© 2019 John Rawlings

Carex aquatilis var. dives    Sitka sedge
native
Perennial grasslike herb

CYPERACEAE

Carex aquatilis var. dives
© 2003 Steve Matson
Carex aquatilis var. dives
© 2003 Steve Matson

Carex concinnoides    Northwestern sedge
native
Perennial grasslike herb

CYPERACEAE

Carex concinnoides
© 2023 Dana York
Carex concinnoides
© 2015 Hayley Ross
Carex concinnoides
© 2015 Hayley Ross

Carex deweyana ssp. leptopoda    Slender-footed sedge
native
Perennial grasslike herb

CYPERACEAE

Carex deweyana ssp. leptopoda
© 2019 Mary Merriman
Carex deweyana ssp. leptopoda
© 2023 R.A. Chasey
Carex deweyana ssp. leptopoda
© 2021 Judy Schwartz

Carex dudleyi    Dense sedge,  Sedge
native
Perennial grasslike herb

CYPERACEAE

Carex dudleyi
© 2023 John Rawlings
Carex dudleyi
© 2022 R.A. Chasey
Carex dudleyi
© 2014 Eric Wrubel

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 hendersonii    Henderson's sedge
native
Perennial grasslike herb

CYPERACEAE

Carex hendersonii
© 2022 Sherry Adams
Carex hendersonii
© 2003 Steve Matson
Carex hendersonii
© 2007 Shawn DeCew

Carex leporina    Hare or oval sedge
native
Perennial grasslike herb

CYPERACEAE

Carex leporina
© null
Carex leporina
© 2009 Chris Wagner
Carex leporina
© 2009 Chris Wagner

Carex leptopoda    Slender-footed sedge
native
Perennial grasslike herb

CYPERACEAE

Carex leptopoda
© 2019 Mary Merriman
Carex leptopoda
© 2023 R.A. Chasey
Carex leptopoda
© 2021 Judy Schwartz

Carex mendocinensis    Mendocino sedge
native
Perennial grasslike herb

CYPERACEAE

Carex mendocinensis
© 2021 R.A. Chasey
Carex mendocinensis
© 2021 R.A. Chasey
Carex mendocinensis
© 2021 R.A. Chasey

Carex obnupta    Coast carex,  Slough sedge
native
Perennial grasslike herb

CYPERACEAE

Carex obnupta
© 2017 Steve Matson
Carex obnupta
© 2017 Steve Matson
Carex obnupta
© 2017 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 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

Carex simulata    Analogue sedge,  Short beaked sedge
native
Perennial grasslike herb

CYPERACEAE

Carex simulata
© 2006 Steve Matson
Carex simulata
© 2017 Eric Wrubel, NPS
Carex simulata
© 2006 Steve Matson

Carex sitchensis    Sitka sedge
native
Perennial grasslike herb

CYPERACEAE

Carex sitchensis
© 2003 Steve Matson
Carex sitchensis
© 2003 Steve Matson

Carex stipata    Awlfruit sedge
native
Perennial grasslike herb

CYPERACEAE

Carex stipata
© 2002 Dean Wm. Taylor
Carex stipata
© 2008 Keir Morse
Carex stipata
© 2008 Keir Morse

Carex stipata var. stipata    Awl fruited sedge,  Owlfruit sedge
native
Perennial grasslike herb

CYPERACEAE

Carex stipata var. stipata
© 2008 Keir Morse
Carex stipata var. stipata
© 2002 Dean Wm. Taylor
Carex stipata var. stipata
© 2014 Trent M. Draper

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

Carpobrotus chilensis    Sea fig
invasive non-native
Perennial herb

AIZOACEAE

Carpobrotus chilensis
© 2018 Nicole Leatherman
Carpobrotus chilensis
© 2016 Steve Matson
Carpobrotus chilensis
© 2021 Cynthia Powell

Castanopsis chrysophylla    Giant chinquapin,  Golden chinquapin
native
Tree, Shrub

FAGACEAE

Castanopsis chrysophylla
© 2019 Patrick Furtado
Castanopsis chrysophylla
© 2014 Richard Chasey
Castanopsis chrysophylla
© 2014 Richard Chasey

Castilleja affinis    Indian paintbrush
native
Perennial herb

OROBANCHACEAE

Castilleja affinis
© 2019 Aleksandra Evert
Castilleja affinis
© 2019 Diane Etchison
Castilleja affinis
© 2019 Diane Etchison

Castilleja affinis ssp. affinis    Coast indian paintbrush
native
Perennial herb

OROBANCHACEAE

Castilleja affinis ssp. affinis
© 2006 Steve Matson
Castilleja affinis ssp. affinis
© 2006 Steve Matson
Castilleja affinis ssp. affinis
© 2019 Ron Vanderhoff

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 miniata ssp. elata    Siskiyou indian paintbrush
native
Perennial herb (hemiparasitic)

OROBANCHACEAE

Castilleja miniata ssp. elata
© 2018 Anna Sereno
Castilleja miniata ssp. elata
© 2018 Anna Sereno
Castilleja miniata ssp. elata
© 2018 Anna Sereno

Caucalis microcarpa    California hedge parsley,  False carrot
native
Annual herb

APIACEAE

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

Ceanothus pumilus    Dwarf ceanothus,  Siskiyou mat
native
Shrub

RHAMNACEAE

Ceanothus pumilus
© 2017 Steve Matson
Ceanothus pumilus
© 2017 Steve Matson
Ceanothus pumilus
© 2017 Steve Matson

Ceanothus thyrsiflorus    Blueblossom
native
Tree, Shrub

RHAMNACEAE

Ceanothus thyrsiflorus
© 2020 David Greenberger
Ceanothus thyrsiflorus
© 2022 R.A. Chasey
Ceanothus thyrsiflorus
© 2019 Patrick Furtado

Ceanothus velutinus var. hookeri    Tobacco brush, snowbrush
native
Tree, Shrub

RHAMNACEAE

Ceanothus velutinus var. hookeri
© 2020 Bob Sweatt
Ceanothus velutinus var. hookeri
© 2019 Susan McDougall
Ceanothus velutinus var. hookeri
© 2021 Mike Russler

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 stoebe ssp. micranthos    Spotted knapweed
invasive non-native
Perennial herb

ASTERACEAE

Centaurea stoebe ssp. micranthos
© 2021 Patrick Hoffman
Centaurea stoebe ssp. micranthos
© 2022 Patrick Hoffman
Centaurea stoebe ssp. micranthos
© 2019 Amanda Mills

Centaurium erythraea    Common centaury,  European centaury
non-native
Annual herb

GENTIANACEAE

Centaurium erythraea
© 2022 Robin Harper
Centaurium erythraea
© 2011 Ryan Batten
Centaurium erythraea
© 2010 Dr.Thomas K. Voekler

Centaurium floribundum    Muehlenberg's centaury
native
Annual herb

GENTIANACEAE

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

Centaurium muehlenbergii    Muehlenberg's centaury
native
Annual herb

GENTIANACEAE

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

Centranthus ruber    Jupiter's beard,  Red valerian
non-native
Annual, Perennial herb

VALERIANACEAE

Centranthus ruber
© 2013 Zachary Mikalonis
Centranthus ruber
© 2022 Justin Felder
Centranthus ruber
© 2020 Deborah Dozier

Cephalanthera austiniae    Phantom orchid
native
Perennial herb

ORCHIDACEAE

Cephalanthera austiniae
© 2017 Steve Matson
Cephalanthera austiniae
© 2015 Steve Matson
Cephalanthera austiniae
© 2017 Steve Matson

Cerastium arvense    Field chickweed,  Meadow chickweed
native
Perennial herb

CARYOPHYLLACEAE

Cerastium arvense
© 2024 Mary Ann Machi
Cerastium arvense
© 2019 John Rawlings
Cerastium arvense
© 2024 Steve Conger

Cerastium arvense ssp. strictum    Field chickweed
native
Perennial herb

CARYOPHYLLACEAE

Cerastium arvense ssp. strictum
© 2023 Dana York
Cerastium arvense ssp. strictum
© 2023 Dana York
Cerastium arvense ssp. strictum
© 2023 Dana York

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

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

CARYOPHYLLACEAE

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

Ceratophyllum demersum    Coon's tail,  Hornwort
native
Perennial herb

CERATOPHYLLACEAE

Ceratophyllum demersum
© 2023 Zoya Akulova-Barlow
Ceratophyllum demersum
© 2018 Ron Vanderhoff
Ceratophyllum demersum
© 2022 Donald Burk

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

ROSACEAE

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

Chamaecyparis lawsoniana    Port orford cedar
native
Tree

CUPRESSACEAE

Chamaecyparis lawsoniana
© 2021 Julie A. Kierstead
Chamaecyparis lawsoniana
© 2018 Julie Kierstead Nelson
Chamaecyparis lawsoniana
© 2019 Tristan K Cole

native
Perennial herb

ONAGRACEAE

Chamerion angustifolium ssp. circumvagum
© 2022 Mike Russler
Chamerion angustifolium ssp. circumvagum
© 2022 Mike Russler
Chamerion angustifolium ssp. circumvagum
© 2022 Mike Russler

Cheilanthes gracillima    Lace lip fern
native
Fern

PTERIDACEAE

Cheilanthes gracillima
© 2021 John Rawlings
Cheilanthes gracillima
© 2021 R.A. Chasey
Cheilanthes gracillima
© 2021 Steve Matson

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

Chimaphila menziesii    Little prince's pine,  Pipsissewa
native
Perennial herb

ERICACEAE

Chimaphila menziesii
© 2006 Steve Matson
Chimaphila menziesii
© 2023 Alaine Arslan
Chimaphila menziesii
© 2019 Jacob Smith

Chimaphila umbellata    Blake's prince's pine,  Pipsissewa,  Prince's Pine
native
Perennial herb

ERICACEAE

Chimaphila umbellata
© 2015 Steve Matson
Chimaphila umbellata
© 2015 Steve Matson
Chimaphila umbellata
© 2019 Steve Matson

Chimaphila umbellata ssp. occidentalis    Blake's prince's pine,  Pipsissewa,  Prince's Pine
native
Perennial herb

ERICACEAE

Chimaphila umbellata ssp. occidentalis
© 2015 Steve Matson
Chimaphila umbellata ssp. occidentalis
© 2015 Steve Matson
Chimaphila umbellata ssp. occidentalis
© 2019 Steve Matson

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

Chlorogalum pomeridianum var. pomeridianum    Common soaproot,  Wavyleaf soap plant
native
Perennial herb

AGAVACEAE

Chlorogalum pomeridianum var. pomeridianum
© 2021 Sue Graue
Chlorogalum pomeridianum var. pomeridianum
© 2015 Sharon King & Randy Aeschliman
Chlorogalum pomeridianum var. pomeridianum
© 2018 Karen Scheuermann

Chrysanthemum leucanthemum    Oxe eye daisy,  Oxeye daisy
invasive non-native
Perennial herb

ASTERACEAE

Chrysanthemum leucanthemum
© 2020 Kim Cabrera
Chrysanthemum leucanthemum
© 2019 Julian Geoghegan
Chrysanthemum leucanthemum
© 2017 James Gonsman

Chrysolepis chrysophylla    Giant chinquapin,  Golden chinquapin
native
Tree, Shrub

FAGACEAE

Chrysolepis chrysophylla
© 2020 Mary Conway
Chrysolepis chrysophylla
© 2021 Hunter Breck
Chrysolepis chrysophylla
© 2022 Jamie Spielmann

Chrysolepis chrysophylla var. minor    Bush chinquapin,  Giant chinquapin
native
Tree, Shrub

FAGACEAE

Chrysolepis chrysophylla var. minor
© 2020 R.A. Chasey
Chrysolepis chrysophylla var. minor
© 2019 Ken Hickman
Chrysolepis chrysophylla var. minor
© 2009 Neal Kramer

Chrysosplenium glechomifolium    Pacific golden saxifrage
rare native
Perennial herb

SAXIFRAGACEAE

Chrysosplenium glechomifolium
© 2013 James Gonsman
Chrysosplenium glechomifolium
© 2021 Dillon Doss
Chrysosplenium glechomifolium
© 2019 Jonathan Lee

Cichorium intybus    Chicory
non-native
Perennial herb

ASTERACEAE

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

Circaea alpina ssp. pacifica    Pacific enchanter's nightshade,  Small enchanter's nightshade
native
Perennial herb

ONAGRACEAE

Circaea alpina ssp. pacifica
© 2003 Steve Matson
Circaea alpina ssp. pacifica
© 2003 Steve Matson
Circaea alpina ssp. pacifica
© 2003 Steve Matson

Cirsium acanthodontum    Few leaved thistle,  Fewleaf thistle
native
Perennial herb

ASTERACEAE

Cirsium acanthodontum
© 2008 Gerald Carr
Cirsium acanthodontum
© 2011 Gerald Carr
Cirsium acanthodontum
© 2017 Hunter Breck

Cirsium arvense    Canada thistle
invasive non-native
Perennial herb

ASTERACEAE

Cirsium arvense
© 2012 Michael Mitchell
Cirsium arvense
© 2012 Michael Mitchell
Cirsium arvense
© 2022 Donald Burk

Cirsium brevistylum    Clustered thistle,  Indian thistle
native
Perennial herb

ASTERACEAE

Cirsium brevistylum
© 2019 Steve Davison
Cirsium brevistylum
© 2018 Brian Charles
Cirsium brevistylum
© 2019 Aleksandra Evert

Cirsium occidentale var. venustum    Cobwebby thistle,  Red thistle,  Venus thistle
native
Perennial herb

ASTERACEAE

Cirsium occidentale var. venustum
© 2011 Steve Matson
Cirsium occidentale var. venustum
© 2011 Steve Matson
Cirsium occidentale var. venustum
© 2011 Steve Matson

Cirsium pastoris    Snowy thistle
native
Perennial herb

ASTERACEAE

Cirsium pastoris
© 2021 Mary Conway
Cirsium pastoris
© 2021 Mary Conway
Cirsium pastoris
© 2018 Debra Valov

Cirsium proteanum    Cobwebby thistle,  Red thistle,  Venus thistle
native
Perennial herb

ASTERACEAE

Cirsium proteanum
© 2011 Steve Matson
Cirsium proteanum
© 2011 Steve Matson
Cirsium proteanum
© 2011 Steve Matson

Cirsium remotifolium    Few leaved thistle,  Fewleaf thistle
native
Perennial herb

ASTERACEAE

Cirsium remotifolium
© 2008 Gerald Carr
Cirsium remotifolium
© 2011 Gerald Carr
Cirsium remotifolium
© 2017 Hunter Breck

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    Farewell to spring
native
Annual herb

ONAGRACEAE

Clarkia amoena
© 2018 Anna Sereno
Clarkia amoena
© 2019 Steve Conger
Clarkia amoena
© 2020 Steve Laymon

Clarkia amoena ssp. amoena    Farewell to spring
native
Annual herb

ONAGRACEAE

Clarkia amoena ssp. amoena
© 2020 Steve Laymon
Clarkia amoena ssp. amoena
© 2020 Steve Laymon
Clarkia amoena ssp. amoena
© 2014 Richard Chasey

Clarkia purpurea    Purple clarkia,  Winecup clarkia
native
Annual herb

ONAGRACEAE

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

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
© 2019 Joe Engelbrecht
Clarkia purpurea ssp. quadrivulnera
© 2021 R.A. Chasey

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

Claytonia sibirica    Candy flower,  Indian lettuce or candy flower,  Siberian springbeauty
native
Perennial herb

MONTIACEAE

Claytonia sibirica
© 2017 Steve Matson
Claytonia sibirica
© 2017 Steve Matson
Claytonia sibirica
© 2015 James Gonsman

Claytonia sibirica var. sibirica    Candy flower,  Indian lettuce or candy flower,  Siberian springbeauty
native
Perennial herb

MONTIACEAE

Claytonia sibirica var. sibirica
© 2017 Steve Matson
Claytonia sibirica var. sibirica
© 2017 Steve Matson
Claytonia sibirica var. sibirica
© 2015 James Gonsman

Claytonia washingtoniana    Suksdorf's spring beauty,  Washington springbeauty
native
Annual herb

MONTIACEAE

Claytonia washingtoniana
© 2010 Gerald Carr
Claytonia washingtoniana
© 2010 Gerald Carr
Claytonia washingtoniana
© 2010 Gerald Carr

Clematis ligusticifolia    Creek clematis,  Western white clematis,  Yerba de chiva
native
Perennial herb, Vine

RANUNCULACEAE

Clematis ligusticifolia
© 2018 Diane Etchison
Clematis ligusticifolia
© 2012 Steve Matson
Clematis ligusticifolia
© 2012 Steve Matson

Clinopodium douglasii    Yerba buena
native
Perennial herb

LAMIACEAE

Clinopodium douglasii
© 2019 Gary McDonald
Clinopodium douglasii
© 2012 Gary McDonald
Clinopodium douglasii
© 2012 Gary McDonald

Clintonia andrewsiana    Andrew's clintonia,  Blue bead lily,  Red clintonia
native
Perennial herb

LILIACEAE

Clintonia andrewsiana
© 2022 Suzanne L. Weakley
Clintonia andrewsiana
© 2020 Eliezer Margolis
Clintonia andrewsiana
© 2013 Paul Preston

Collinsia linearis    Narrow leaf collinsia,  Narrowleaf blue eyed mary
native
Annual herb

PLANTAGINACEAE

Collinsia linearis
© 2022 Dana York
Collinsia linearis
© 2022 Dana York
Collinsia linearis
© 2008 Keir Morse

Collomia heterophylla    Variableleaf collomia,  Varied leaved collomia
native
Annual herb

POLEMONIACEAE

Collomia heterophylla
© 2023 Steve Conger
Collomia heterophylla
© 2017 Steve Matson
Collomia heterophylla
© 2024 Steve Conger

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

Coptis laciniata    Oregon golden thread,  Oregon goldthread
rare native
Perennial herb

RANUNCULACEAE

Coptis laciniata
© 2023 Dana York
Coptis laciniata
© 2023 Dana York
Coptis laciniata
© 2023 Dana York

Corallorhiza maculata    Spotted coralroot,  Summer coral root,  Summer coralroot
native
Perennial herb

ORCHIDACEAE

Corallorhiza maculata
© 2023 Steve Conger
Corallorhiza maculata
© 2024 Matt Berger
Corallorhiza maculata
© 2018 Rick Wachs

Corallorhiza mertensiana    Merten's coral root,  Pacific coralroot
native
Perennial herb

ORCHIDACEAE

Corallorhiza mertensiana
© 2018 Timothy Boomer
Corallorhiza mertensiana
© 2023 Timothy Boomer
Corallorhiza mertensiana
© 2018 Timothy Boomer

Corallorhiza striata    Hooded coralroot,  Striped coral root
native
Perennial herb

ORCHIDACEAE

Corallorhiza striata
© 2018 Timothy Boomer
Corallorhiza striata
© 2022 Steve Conger
Corallorhiza striata
© 2019 Timothy Boomer

Cordylanthus tenuis ssp. viscidus    Slender bird's beak,  Sticky bird's beak,  Viscid bird's beak
native
Annual herb

OROBANCHACEAE

Cordylanthus tenuis ssp. viscidus
© 2015 Steve Matson
Cordylanthus tenuis ssp. viscidus
© 2015 Steve Matson
Cordylanthus tenuis ssp. viscidus
© 2015 Steve Matson

Corethrogyne filaginifolia    Common sandaster
native
Perennial herb

ASTERACEAE

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

Cornus capitata    Small Tree-Mallow


Cornus glabrata    Brown dogwood
native
Tree, Shrub

CORNACEAE

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

Cornus nuttallii    Mountain dogwood,  Pacific dogwood,  Pacific mountain dogwood
native
Shrub

CORNACEAE

Cornus nuttallii
© 2018 Matt Berger
Cornus nuttallii
© 2019 Susan McDougall
Cornus nuttallii
© 2019 Janith Johnson

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

Cornus sericea ssp. occidentalis    Western dogwood
native
Shrub

CORNACEAE

Cornus sericea ssp. occidentalis
© 2019 David Greenberger
Cornus sericea ssp. occidentalis
© 2018 Lynn Overtree
Cornus sericea ssp. occidentalis
© 2020 Susan McDougall

Cornus sessilis    Blackfruit dogwood,  Miners dogwood,  Western cornelian cherry
native
Tree

CORNACEAE

Cornus sessilis
© 2019 Bill Haley
Cornus sessilis
© 2023 Mary Ann Machi
Cornus sessilis
© 2021 Christopher Collier

Cortaderia jubata    Pampas grass,  Purple pampas grass
invasive non-native
Perennial grass

POACEAE

Cortaderia jubata
© 2018 Ramona Robison
Cortaderia jubata
© 2021 Michelle Karle
Cortaderia jubata
© 2022 Michelle Karle

Corylus cornuta    Beaked hazelnut
native
Shrub

BETULACEAE

Corylus cornuta
© 2017 Steve Matson
Corylus cornuta
© 2017 Steve Matson
Corylus cornuta
© 2016 Steve Matson

Corylus cornuta ssp. californica    Beaked hazelnut
native
Shrub

BETULACEAE

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

Cotoneaster franchetii    Cotoneaster,  Francheti cotoneaster,  Orange cotoneaster
invasive non-native
Shrub

ROSACEAE

Cotoneaster franchetii
© 2021 Cynthia Powell
Cotoneaster franchetii
© 2021 Lenihan Mazur
Cotoneaster franchetii
© 2019 Lenihan Mazur

Cotoneaster integrifolius    Entire-leaved cotoneaster
non-native
Shrub

ROSACEAE

Cotoneaster integrifolius
© 2021 R.A. Chasey
Cotoneaster integrifolius
© 2021 David Greenberger
Cotoneaster integrifolius
© 2006 Peter Zika

Cotoneaster pannosus    Cotoneaster,  Silverleaf cotoneaster,  Woolly cotoneaster
invasive non-native
Shrub

ROSACEAE

Cotoneaster pannosus
© 2021 David Wolfson
Cotoneaster pannosus
© 2019 Cynthia Powell
Cotoneaster pannosus
© 2018 MCOSD EDRR

Cotula australis    Australian brass buttons,  Australian cotula,  Australian waterbuttons
non-native
Annual herb

ASTERACEAE

Cotula australis
© 2023 Mike Russler
Cotula australis
© 2022 Ron Vanderhoff
Cotula australis
© 2023 Mike Russler

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

Crataegus monogyna    Hawthorn
invasive non-native
Shrub

ROSACEAE

Crataegus monogyna
© 2022 Emily R. Allen
Crataegus monogyna
© 2021 Isaac Kreger
Crataegus monogyna
© 2021 Sherry Adams

Crepis capillaris    Hawksbeard,  Smooth hawk's beard,  Smooth hawksbeard
non-native
Annual, Perennial herb

ASTERACEAE

Crepis capillaris
© 2003 Steve Matson
Crepis capillaris
© 2003 Steve Matson
Crepis capillaris
© 2003 Steve Matson

Crocosmia Xcrocosmiiflora    Coppertips,  Montbretia,  Falling stars
invasive non-native
Perennial herb

IRIDACEAE

Crocosmia Xcrocosmiiflora
© 2014 Andrea Williams
Crocosmia Xcrocosmiiflora
© 2019 Lenihan Mazur
Crocosmia Xcrocosmiiflora
© 2014 Andrew Georgeades

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

Cryptantha leiocarpa    Coast cryptantha,  Coastal cryptantha,  Popcorn flower
native
Annual herb

BORAGINACEAE

Cryptantha leiocarpa
© 2017 Steve Matson
Cryptantha leiocarpa
© 2017 Steve Matson
Cryptantha leiocarpa
© 2017 Steve Matson

Cupressus lawsoniana    Port orford cedar
native
Tree

CUPRESSACEAE

Cupressus lawsoniana
© 2021 Julie A. Kierstead
Cupressus lawsoniana
© 2018 Julie Kierstead Nelson
Cupressus lawsoniana
© 2019 Tristan K Cole

Cuscuta pentagona    Five angled dodder,  Fiveangled dodder,  Western field dodder
native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta pentagona
© © 2016 Keir Morse
Cuscuta pentagona
© 2016 Keir Morse
Cuscuta pentagona
© 2016 Keir Morse

Cymbalaria muralis    Kenilworth ivy
non-native
Annual, Perennial herb

PLANTAGINACEAE

Cymbalaria muralis
© 2022 David Wolfson
Cymbalaria muralis
© 2017 James Bailey
Cymbalaria muralis
© 2014 Toni Corelli

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 cristatus    Crested dogstail grass,  Crested dogtail grass
non-native
Perennial grass

POACEAE

Cynosurus cristatus
© 2010 Zoya Akulova
Cynosurus cristatus
© 2010 Zoya Akulova
Cynosurus cristatus
© 2016 Zoya Akulova

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   


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 niger    Black cyperus,  Black flatsedge,  Brown cyperus
native
Perennial grasslike herb

CYPERACEAE

Cyperus niger
© 2020 Ron Vanderhoff
Cyperus niger
© 2021 Ron Vanderhoff
Cyperus niger
© 2021 Ron Vanderhoff

Cypripedium californicum    California lady's slipper
rare native
Perennial herb (rhizomatous)

ORCHIDACEAE

Cypripedium californicum
© 2023 Mary Ann Machi
Cypripedium californicum
© 2017 Steve Matson
Cypripedium californicum
© 2018 Margarita Orlova

Cystopteris fragilis    Bladder fern,  Brittle bladder fern,  Brittle fern
native
Fern

CYSTOPTERIDACEAE

Cystopteris fragilis
© 2020 Bob Sweatt
Cystopteris fragilis
© 2021 Mike Russler
Cystopteris fragilis
© 2023 Ken-ichi Ueda

Cytisus multiflorus    Spanish broom,  White spanishbroom
invasive non-native
Shrub

FABACEAE

Cytisus multiflorus
© 2024 John Fairbank

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

Dactylis glomerata    Orchard grass,  Orchardgrass
invasive non-native
Perennial grass

POACEAE

Dactylis glomerata
© 2018 Jennifer Mo
Dactylis glomerata
© 2020 Jim Richards
Dactylis glomerata
© 2017 Gary McDonald

Danthonia californica    California oatgrass
native
Perennial grass

POACEAE

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

Daucus carota    Queen Anne's lace,  Wild carrot
invasive non-native
Perennial herb

APIACEAE

Daucus carota
© 2023 Donald Burk
Daucus carota
© 2021 Charles Russell
Daucus carota
© 2021 Ken Lunders

Daucus pusillus    American wild carrot,  Rattlesnake weed
native
Annual herb

APIACEAE

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

Delairea odorata    Cape ivy
invasive non-native
Perennial herb

ASTERACEAE

Delairea odorata
© 2019 Ron Vanderhoff
Delairea odorata
© 2019 Ron Vanderhoff
Delairea odorata
© 2019 Ron Vanderhoff

Delphinium decorum    Coast larkspur,  Coastal larkspur,  Larkspur
native
Perennial herb

RANUNCULACEAE

Delphinium decorum
© 2024 Mary Ann Machi
Delphinium decorum
© 2024 Mary Ann Machi
Delphinium decorum
© 2021 Mary Ann Machi

Delphinium decorum ssp. tracyi    Coastal larkspur,  Tracy's larkspur
native
Perennial herb

RANUNCULACEAE

Delphinium decorum ssp. tracyi
© 2021 Steve Matson
Delphinium decorum ssp. tracyi
© 2021 Steve Matson
Delphinium decorum ssp. tracyi
© 2021 Steve Matson

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

RANUNCULACEAE

Delphinium nudicaule
© 2006 Steve Matson
Delphinium nudicaule
© 2006 Steve Matson
Delphinium nudicaule
© 2024 Mary Ann Machi

Delphinium trolliifolium    Columbian larkspur,  Cow poison
native
Perennial herb

RANUNCULACEAE

Delphinium trolliifolium
© 2023 Dennis ONeill
Delphinium trolliifolium
© 2010 Aaron Arthur
Delphinium trolliifolium
© 2005 Jerry Murray

Deschampsia caespitosa    California hairgrass,  Tufted hair grass,  Tufted hairgrass
native
Perennial grass

POACEAE

Deschampsia caespitosa
© 2022 Justin Luong
Deschampsia caespitosa
© 2022 Dianne Lake
Deschampsia caespitosa
© 2022 Dianne Lake

Deschampsia cespitosa ssp. cespitosa    Tufted hair grass,  Tufted hairgrass
native
Perennial grass

POACEAE

Deschampsia cespitosa ssp. cespitosa
© 2007 Keir Morse
Deschampsia cespitosa ssp. cespitosa
© 2019 David Greenberger
Deschampsia cespitosa ssp. cespitosa
© 2023 Dianne Lake

Deschampsia danthonioides    Annual hairgrass
native
Annual grass

POACEAE

Deschampsia danthonioides
© 2003 Steve Matson
Deschampsia danthonioides
© 2003 Steve Matson
Deschampsia danthonioides
© 2018 Emily Allen

Deschampsia elongata    Hairgrass,  Slender hairgrass
native
Perennial grass

POACEAE

Deschampsia elongata
© 2021 John Rawlings
Deschampsia elongata
© 2021 John Rawlings
Deschampsia elongata
© 2023 Robert Steers

Dicentra formosa    Pacific bleeding heart,  Pacific bleedinghearts
native
Perennial herb

PAPAVERACEAE

Dicentra formosa
© 2005 Steve Matson
Dicentra formosa
© 2005 Steve Matson
Dicentra formosa
© 2005 Steve Matson

Dichelostemma capitatum    Blue dicks
native
Perennial herb

THEMIDACEAE

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

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

Dichelostemma ida-maia    Firecracker brodiaea,  Firecracker flower
native
Perennial herb

THEMIDACEAE

Dichelostemma ida-maia
© 2008 Steve Matson
Dichelostemma ida-maia
© 2023 Melissa Harbert
Dichelostemma ida-maia
© 2019 Steve Laymon

Dichelostemma Xvenustum    Rose firecracker flower
native
Perennial herb

THEMIDACEAE

Dichelostemma Xvenustum
© 2023 Melissa Harbert
Dichelostemma Xvenustum
© 2022 Jamie Spielmann
Dichelostemma Xvenustum
© 2023 Jamie Spielmann

Digitalis purpurea    Purple foxglove
invasive non-native
Perennial herb

PLANTAGINACEAE

Digitalis purpurea
© 2016 Steve Matson
Digitalis purpurea
© 2016 Steve Matson
Digitalis purpurea
© 2016 Steve Matson

Dipsacus fullonum    Fuller's teasel,  Fullers' teasel,  Wild teasel
invasive non-native
Perennial herb

DIPSACACEAE

Dipsacus fullonum
© 2022 Morgan Stickrod
Dipsacus fullonum
© 2017 MCOSD Restoration Crew
Dipsacus fullonum
© 2021 Amber Bedgood

Disporum smithii    Largeflower fairybells
native
Perennial herb

LILIACEAE

Disporum smithii
© 2021 Steve Matson
Disporum smithii
© 2021 Steve Matson
Disporum smithii
© 2021 Steve Matson

Dodecatheon hendersonii    Mosquito bill
native
Perennial herb

PRIMULACEAE

Dodecatheon hendersonii
© 2016 Steve Matson
Dodecatheon hendersonii
© 2016 Steve Matson
Dodecatheon hendersonii
© 2020 BLM Redding Field Office

native
Perennial herb

ROSACEAE

Drymocallis glandulosa var. glandulosa
© 2020 Diane Etchison
Drymocallis glandulosa var. glandulosa
© 2017 Steve Matson
Drymocallis glandulosa var. glandulosa
© 2021 Mike Russler

Drymocallis glandulosa var. reflexa    Sticky cinquefoil
native
Perennial herb

ROSACEAE

Drymocallis glandulosa var. reflexa
© 2015 Barry Breckling
Drymocallis glandulosa var. reflexa
© 2003 Yulan Tong
Drymocallis glandulosa var. reflexa
© 2009 Barry Breckling

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

Dryopteris expansa    Common wood fern,  Spreading wood fern,  Spreading woodfern
native
Fern

DRYOPTERIDACEAE

Dryopteris expansa
© 2019 Stella Yang
Dryopteris expansa
© 2023 Diana Wahl
Dryopteris expansa
© 2014 BOB CASE

Dudleya farinosa    Bluff lettuce,  North coast dudleya,  Powdery liveforever
native
Perennial herb

CRASSULACEAE

Dudleya farinosa
© 2022 Mike Russler
Dudleya farinosa
© 2019 Amy Rapport
Dudleya farinosa
© 2019 Heather Morrison

Dysphania ambrosioides    Mexican tea
non-native
Annual, Perennial herb

CHENOPODIACEAE

Dysphania ambrosioides
© 2020 Ron Vanderhoff
Dysphania ambrosioides
© 2018 Ron Vanderhoff
Dysphania ambrosioides
© 2020 Ron Vanderhoff

Dysphania botrys    Jerusalem oak goosefoot
non-native
Annual herb

CHENOPODIACEAE

Dysphania botrys
© 2022 Steve Matson
Dysphania botrys
© 2021 BLM Redding Field Office
Dysphania botrys
© 2023 R.A. Chasey

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 parvula    Dwarf spikerush,  Small spikerush
rare native
Perennial grasslike herb

CYPERACEAE

Eleocharis parvula
© 2020 Ron Vanderhoff
Eleocharis parvula
© 2020 Ron Vanderhoff
Eleocharis parvula
© 2020 Ron Vanderhoff

Elodea canadensis    Canadian waterweed,  Common water weed,  Elodea
native
Perennial herb

HYDROCHARITACEAE

Elodea canadensis
© 2000 Bob Sweatt
Elodea canadensis
© 2019 David popp
Elodea canadensis
© 2020 R.A. Chasey

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

POACEAE

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

Elymus glaucus    Blue wildrye
native
Perennial grass

POACEAE

Elymus glaucus
© 2020 Denise Defreese
Elymus glaucus
© 2019 Patrick Furtado
Elymus glaucus
© 2018 Cynthia Powell

Elymus glaucus ssp. virescens    Blue wildrye,  Virginia wildrye
native
Perennial grass

POACEAE

Elymus glaucus ssp. virescens
© 2023 John Rawlings
Elymus glaucus ssp. virescens
© 2012 Toni Corelli
Elymus glaucus ssp. virescens
© 2023 John Rawlings

Elymus mollis ssp. mollis    American dune grass, sea lyme grass
native
Perennial grass

POACEAE

Elymus mollis ssp. mollis
© 2021 Ramona Robison
Elymus mollis ssp. mollis
© 2021 Ramona Robison
Elymus mollis ssp. mollis
© 2009 Toni Corelli

Elymus spicatus    Blue bunch wheat grass
native
Perennial grass

POACEAE

Elymus spicatus
© 2013 Robert L. Carr
Elymus spicatus
© 2013 Robert L. Carr
Elymus spicatus
© 2013 Robert L. Carr

Elymus trachycaulus    Slender wheatgrass
native
Perennial grass

POACEAE

Elymus trachycaulus
© 2021 Julian Geoghegan
Elymus trachycaulus
© 2016 Andrew Longman
Elymus trachycaulus
© 2020 Diana Wahl

Elymus trachycaulus ssp. trachycaulus    Slender wheatgrass
native
Perennial grass

POACEAE

Elymus trachycaulus ssp. trachycaulus
© 2022 John Rawlings
Elymus trachycaulus ssp. trachycaulus
© 2019 Ken Hickman
Elymus trachycaulus ssp. trachycaulus
© 2019 Ken Hickman

Enemion stipitatum    Siskiyou false rue anemone
native
Perennial herb

RANUNCULACEAE

Enemion stipitatum
© 2021 Steve Laymon
Enemion stipitatum
© 2020 Steve Laymon
Enemion stipitatum
© 2024 Dana York

Epilobium angustifolium    Fireweed
native
Perennial herb

ONAGRACEAE

Epilobium angustifolium
© 2021 Arlee Montalvo
Epilobium angustifolium
© 2020 Joey Santore
Epilobium angustifolium
© 2021 Mary Ann Machi

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    Fringed willowherb,  Northern willow herb,  Slender willow herb
native
Perennial herb

ONAGRACEAE

Epilobium ciliatum
© 2021 stephen rosenthal
Epilobium ciliatum
© 2019 Patrick Furtado
Epilobium ciliatum
© 2019 Gary McDonald

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 ciliatum ssp. watsonii    Fringed willowherb,  Watson's willowherb,  Willow herb
native
Perennial herb

ONAGRACEAE

Epilobium ciliatum ssp. watsonii
© 2017 David Greenberger
Epilobium ciliatum ssp. watsonii
© 2012 BOB CASE
Epilobium ciliatum ssp. watsonii
© 2021 Jamie Spielmann

Epilobium halleanum    Hall's willowherb
native
Perennial herb

ONAGRACEAE

Epilobium halleanum
© 2005 Steve Matson
Epilobium halleanum
© 2010 Steve Matson
Epilobium halleanum
© 2010 Steve Matson

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 arvense    Common horsetail rush,  Common horsetail, field horsetail,  Field horsetail
native
Fern

EQUISETACEAE

Equisetum arvense
© 2022 Suzanne L. Weakley
Equisetum arvense
© 2021 Cynthia Powell
Equisetum arvense
© 2016 Cynthia Powell

Equisetum hyemale ssp. affine    Giant scouring rush
native
Fern

EQUISETACEAE

Equisetum hyemale ssp. affine
© 2013 Michael Mitchell
Equisetum hyemale ssp. affine
© 2021 Ron Vanderhoff
Equisetum hyemale ssp. affine
© 2021 Ron Vanderhoff

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

EQUISETACEAE

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

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

Erechtites arguta    Cutleaf burnweed
invasive non-native
Annual, Perennial herb

ASTERACEAE

Erechtites arguta
© 2015 Lynn Overtree
Erechtites arguta
© 2023 R.A. Chasey
Erechtites arguta
© 2021 Mary Conway

Erica lusitanica    Spanish heather
invasive non-native
Shrub

ERICACEAE

Erica lusitanica
© 2021 Patrick Hoffman
Erica lusitanica
© 2022 Patrick Hoffman
Erica lusitanica
© 2022 Patrick Hoffman

Erigeron canadensis    Canada horseweed
native
Annual herb

ASTERACEAE

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

Erigeron foliosus    Leafy daisy,  Leafy fleabane
native
Perennial herb

ASTERACEAE

Erigeron foliosus
© 2022 Ron Vanderhoff
Erigeron foliosus
© 2022 Ryan O'Dell
Erigeron foliosus
© 2023 R.A. Chasey

Erigeron foliosus var. hartwegii    Hartweg's fleabane
native
Perennial herb

ASTERACEAE

Erigeron foliosus var. hartwegii
© 2016 Steve Matson
Erigeron foliosus var. hartwegii
© 2016 Steve Matson
Erigeron foliosus var. hartwegii
© 2016 Steve Matson

Erigeron glaucus    Seaside daisy,  Seaside fleabane
native
Perennial herb

ASTERACEAE

Erigeron glaucus
© 2023 Toni Corelli
Erigeron glaucus
© 2019 James Gonsman
Erigeron glaucus
© 2018 Asa B Spade

Erigeron inornatus    California rayless daisy,  California rayless fleabane,  Western Rayless Fleabane
native
Perennial herb

ASTERACEAE

Erigeron inornatus
© 2006 Steve Matson
Erigeron inornatus
© 2006 Steve Matson
Erigeron inornatus
© 2006 Steve Matson

Erigeron inornatus var. inornatus    California rayless daisy,  California rayless fleabane,  Fleabane
native
Perennial herb

ASTERACEAE

Erigeron inornatus var. inornatus
© 2020 Bob Sweatt
Erigeron inornatus var. inornatus
© 2020 R.A. Chasey
Erigeron inornatus var. inornatus
© 2014 John Doyen

Erigeron philadelphicus    Philadelphia fleabane
native
Perennial herb

ASTERACEAE

Erigeron philadelphicus
© 2023 R.A. Chasey
Erigeron philadelphicus
© 2021 R.A. Chasey
Erigeron philadelphicus
© 2023 R.A. Chasey

Erigeron reductus var. reductus    California rayless daisy,  Lesser california rayless fleabane
native
Perennial herb

ASTERACEAE

Erigeron reductus var. reductus
© 2017 Chelsea Morgan
Erigeron reductus var. reductus
© 2017 Chelsea Morgan
Erigeron reductus var. reductus
© 2001 Dean Wm. Taylor

Eriogonum latifolium    Coast buckwheat,  Coast eriogonum,  Seaside buckwheat
native
Perennial herb

POLYGONACEAE

Eriogonum latifolium
© 2016 Suzanne L. Weakley
Eriogonum latifolium
© 2021 Dylan Neubauer
Eriogonum latifolium
© 2019 Patrick Furtado

Eriogonum nudum    Naked buckwheat,  Nude buckwheat
native
Shrub

POLYGONACEAE

Eriogonum nudum
© 2011 Steve Matson
Eriogonum nudum
© 2014 Steve Matson
Eriogonum nudum
© 2008 Steve Matson

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

Eriogonum nudum var. oblongifolium    Naked buckwheat,  Oblong leaved buckwheat
native
Shrub

POLYGONACEAE

Eriogonum nudum var. oblongifolium
© 2016 Steve Matson
Eriogonum nudum var. oblongifolium
© 2016 Steve Matson
Eriogonum nudum var. oblongifolium
© 2016 Steve Matson

Eriophyllum lanatum    Common woolly sunflower,  Common woollysunflower,  Wooly sunflower
native
Perennial herb

ASTERACEAE

Eriophyllum lanatum
© 2008 Steve Matson
Eriophyllum lanatum
© 2008 Steve Matson
Eriophyllum lanatum
© 2020 Steve Matson

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

ASTERACEAE

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

Eriophyllum staechadifolium    Lizard tail,  Seaside golden yarrow,  Seaside woolly sunflower
native
Perennial herb

ASTERACEAE

Eriophyllum staechadifolium
© 2024 Steve Conger
Eriophyllum staechadifolium
© 2014 James Gonsman
Eriophyllum staechadifolium
© 2019 Mary Conway

Eriophyllum stoechadifolium var. artemisiifolium    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 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

Erysimum capitatum    Sanddune wallflower,  Western wallflower
native
Perennial herb

BRASSICACEAE

Erysimum capitatum
© 2018 Janith Johnson
Erysimum capitatum
© 2023 Julia Markey
Erysimum capitatum
© 2019 Diane Etchison

Erysimum capitatum ssp. capitatum    Sanddune wallflower,  Western wallflower
native
Perennial herb

BRASSICACEAE

Erysimum capitatum ssp. capitatum
© 2018 Janith Johnson
Erysimum capitatum ssp. capitatum
© 2023 Julia Markey
Erysimum capitatum ssp. capitatum
© 2019 Diane Etchison

Erythronium californicum    California fawn lily,  California fawnlily
native
Perennial herb (bulb)

LILIACEAE

Erythronium californicum
© 2021 Steve Matson
Erythronium californicum
© 2021 Steve Matson
Erythronium californicum
© 2021 Steve Matson

Erythronium oregonum    Giant white fawnlily,  Oregon fawn lily
rare native
Perennial herb (bulb)

LILIACEAE

Erythronium oregonum
© 2021 Steve Matson
Erythronium oregonum
© 2021 Steve Matson
Erythronium oregonum
© 2021 Steve Matson

Erythronium revolutum    Mahogany fawn lily
rare native
Perennial herb (bulb)

LILIACEAE

Erythronium revolutum
© 2021 Steve Conger
Erythronium revolutum
© 2021 Mary Ann Machi
Erythronium revolutum
© 2024 Steve Conger

Escallonia rubra    Red claws
non-native
Shrub

GROSSULARIACEAE

Escallonia rubra
© 2014 Gerald Carr
Escallonia rubra
© 2014 Gerald Carr
Escallonia rubra
© 2014 Gerald Carr

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

rare native
Perennial herb

PAPAVERACEAE


Eucalyptus pulverulenta    Money tree,  Silverleaf mountain gum
non-native
Tree

MYRTACEAE

Eucalyptus pulverulenta
© 2012 David Varner
Eucalyptus pulverulenta
© 2008 Zoya Akulova
Eucalyptus pulverulenta
© 2012 David Varner

Eucalyptus sideroxylon    Red iron bark,  Red ironbark
non-native
Tree

MYRTACEAE

Eucalyptus sideroxylon
© 2021 Ron Vanderhoff
Eucalyptus sideroxylon
© 2022 Ron Vanderhoff
Eucalyptus sideroxylon
© 2022 Ron Vanderhoff

Euchiton gymnocephalus    Creeping cudweed
non-native
Perennial herb

ASTERACEAE

Euchiton gymnocephalus
© 2008 Zoya Akulova
Euchiton gymnocephalus
© 2009 Zoya Akulova
Euchiton gymnocephalus
© 2017 Zoya Akulova

Euchiton sphaericus    Tropical creeping cudweed
non-native
Annual herb

ASTERACEAE

Euchiton sphaericus
© © 2014 Richard Spellenberg
Euchiton sphaericus
© 2014 Richard Spellenberg
Euchiton sphaericus
© 2014 Richard Spellenberg

Euonymus occidentalis    Burning bush,  Western burning bush
native
Tree, Shrub

CELASTRACEAE

Euonymus occidentalis
© 2017 Diane Etchison
Euonymus occidentalis
© 2019 David Greenberger
Euonymus occidentalis
© 2017 Brian Charles

Euonymus occidentalis var. occidentalis    Western burning bush
native
Tree, Shrub

CELASTRACEAE

Euonymus occidentalis var. occidentalis
© 2021 Chris Brant
Euonymus occidentalis var. occidentalis
© 2019 Toni Corelli
Euonymus occidentalis var. occidentalis
© 2021 Chris Brant

Euphorbia crenulata    Chinese caps,  Chinesecaps
native
Annual, Perennial herb

EUPHORBIACEAE

Euphorbia crenulata
© 2008 Steve Matson
Euphorbia crenulata
© 2008 Steve Matson
Euphorbia crenulata
© 2008 Steve Matson

Euphorbia lathyris    Compass plant,  Gopher plant,  Moleplant
invasive non-native
Annual, Perennial herb

EUPHORBIACEAE

Euphorbia lathyris
© 2017 Aaron Echols
Euphorbia lathyris
© 2021 Mike Russler
Euphorbia lathyris
© 2017 Ron Vanderhoff

Eurybia radulina    Roughleaf aster
native
Perennial herb

ASTERACEAE

Eurybia radulina
© 2007 Keir Morse
Eurybia radulina
© 2023 Ken-ichi Ueda
Eurybia radulina
© 2022 Bob Sweatt

Fallopia convolvulus    Black bindweed
non-native
Annual herb

POLYGONACEAE

Fallopia convolvulus
© 2014 Robert L. Carr
Fallopia convolvulus
© 2014 Robert L. Carr
Fallopia convolvulus
© 2014 Robert L. Carr

Fallopia sachalinensis    Giant knotweed
invasive non-native
Perennial herb

POLYGONACEAE

Fallopia sachalinensis
© 2022 Patrick Hoffman
Fallopia sachalinensis
© 2001 CDFA
Fallopia sachalinensis
© 2023 John Malpas

Festuca arundinacea    Alta fescue,  Reed fescue,  Tall fescue
invasive non-native
Perennial grass

POACEAE

Festuca arundinacea
© 2022 Cynthia Powell
Festuca arundinacea
© 2020 Robert Steers
Festuca arundinacea
© 2017 MCOSD EDRR

Festuca bromoides    Brome fescue
non-native
Annual grass

POACEAE

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

Festuca californica    California fescue
native
Perennial grass

POACEAE

Festuca californica
© 2019 Justin Luong
Festuca californica
© 2022 Justin Luong
Festuca californica
© 2012 Aaron Arthur

Festuca californica var. californica    California fescue
native
Perennial grass

POACEAE

Festuca californica var. californica
© 2019 Justin Luong
Festuca californica var. californica
© 2022 Justin Luong
Festuca californica var. californica
© 2012 Aaron Arthur

Festuca elmeri    Coast fescue,  Elmer fescue
native
Perennial grass

POACEAE

Festuca elmeri
© 2019 Ken Hickman
Festuca elmeri
© 2022 John Rawlings
Festuca elmeri
© 2007 Toni Corelli

Festuca elmeri var. elmeri    Coast fescue,  Elmer fescue
native
Perennial grass

POACEAE

Festuca elmeri var. elmeri
© 2019 Ken Hickman
Festuca elmeri var. elmeri
© 2022 John Rawlings
Festuca elmeri var. elmeri
© 2007 Toni Corelli

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

Festuca myuros    Rattail sixweeks grass
invasive non-native
Annual grass

POACEAE

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

Festuca occidentalis    Western fescue
native
Perennial grass

POACEAE

Festuca occidentalis
© 2011 Steve Matson
Festuca occidentalis
© 2011 Steve Matson
Festuca occidentalis
© 2011 Steve Matson

Festuca perennis    Italian rye grass
invasive non-native
Annual, Perennial grass

POACEAE

Festuca perennis
© 2019 Ron Vanderhoff
Festuca perennis
© 2017 Gary McDonald
Festuca perennis
© 2021 Ron Vanderhoff

Festuca pratensis    Meadow fescue
non-native
Perennial grass

POACEAE

Festuca pratensis
© 2023 Elliot Gunnison
Festuca pratensis
© 2012 Al Keuter
Festuca pratensis
© 2012 Al Keuter

Festuca rubra    Red fescue
native
Perennial grass

POACEAE

Festuca rubra
© 2012 Ove Anderson
Festuca rubra
© 2022 John Rawlings
Festuca rubra
© 2018 Alexandra Kookootsedes

Festuca rubra ssp. rubra    Red fescue
native
Perennial grass

POACEAE

Festuca rubra ssp. rubra
© 2018 Susan McDougall
Festuca rubra ssp. rubra
© 2018 Susan McDougall

Festuca subulata    Bearded fescue,  Nodding fescue
native
Perennial grass

POACEAE

Festuca subulata
© 2023 Matt Berger
Festuca subulata
© 2023 Matt Berger
Festuca subulata
© 2023 Matt Berger

Festuca subuliflora    Coast range fescue,  Crinkleawn fescue
native
Perennial grass

POACEAE

Festuca subuliflora
© 2018 Ken Hickman
Festuca subuliflora
© 2022 John Rawlings
Festuca subuliflora
© 2022 John Rawlings

Festuca temulenta    Darnel, tares
non-native
Annual grass

POACEAE

Festuca temulenta
© 2016 Spade Natural Resources Consulting
Festuca temulenta
© 2020 David popp
Festuca temulenta
© 2019 Stephany Dery

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

Forsythia Xintermedia    Small Tree-Mallow


Fragaria chiloensis    Beach strawberry
native
Perennial herb

ROSACEAE

Fragaria chiloensis
© 2016 Teresa R Spade, AICP
Fragaria chiloensis
© 2019 Patrick Furtado
Fragaria chiloensis
© 2020 Carlos Davidson

Fragaria vesca    California strawberry,  Wild strawberry,  Wood strawberry
native
Perennial herb

ROSACEAE

Fragaria vesca
© 2020 Cara Wilcox
Fragaria vesca
© 2017 James Gonsman
Fragaria vesca
© 2022 Dee Shea Himes

Fragaria vesca ssp. californica    California strawberry,  Wild strawberry,  Wood strawberry
native
Perennial herb

ROSACEAE

Fragaria vesca ssp. californica
© 2020 Cara Wilcox
Fragaria vesca ssp. californica
© 2017 James Gonsman
Fragaria vesca ssp. californica
© 2022 Dee Shea Himes

Frangula californica ssp. californica    California coffeeberry
native
Shrub

RHAMNACEAE

Frangula californica ssp. californica
© 2015 Steve Matson
Frangula californica ssp. californica
© 2015 Steve Matson
Frangula californica ssp. californica
© 2019 Ron Vanderhoff

Frangula californica ssp. occidentalis    Wetern california coffeeberry
native
Shrub

RHAMNACEAE

Frangula californica ssp. occidentalis
© 2016 Steve Matson
Frangula californica ssp. occidentalis
© 2016 Steve Matson
Frangula californica ssp. occidentalis
© 2016 Steve Matson

Frangula purshiana    Cascara buckthorn
native
Tree, Shrub

RHAMNACEAE

Frangula purshiana
© 2017 Steve Matson
Frangula purshiana
© 2017 Steve Matson
Frangula purshiana
© 2017 Steve Matson

Fraxinus latifolia    Oregon ash
native
Tree

OLEACEAE

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

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

LILIACEAE

Fritillaria affinis
© 2008 Steve Matson
Fritillaria affinis
© 2008 Steve Matson
Fritillaria affinis
© 2008 Steve Matson

Galium ambiguum    Yolla bolly bedstraw
native
Perennial herb

RUBIACEAE

Galium ambiguum
© 2023 Ryan O'Dell
Galium ambiguum
© 2017 Steve Matson
Galium ambiguum
© 2017 Steve Matson

Galium ambiguum ssp. siskiyouense    Siskiyou bedstraw
native
Perennial herb

RUBIACEAE

Galium ambiguum ssp. siskiyouense
© 2017 Steve Matson
Galium ambiguum ssp. siskiyouense
© 2017 Steve Matson
Galium ambiguum ssp. siskiyouense
© 2009 Sierra Pacific Industries

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

Galium bolanderi    Bolander galium,  Bolander's bedstraw
native
Perennial herb

RUBIACEAE

Galium bolanderi
© 2020 Neal Kramer
Galium bolanderi
© 2015 Steve Matson
Galium bolanderi
© 2015 Steve Matson

Galium californicum    California bedstraw
native
Perennial herb

RUBIACEAE

Galium californicum
© 2006 Steve Matson
Galium californicum
© 2014 Steve Matson
Galium californicum
© 2014 Steve Matson

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 parisiense    Wall bedstraw
non-native
Annual herb

RUBIACEAE

Galium parisiense
© 2021 Al Keuter
Galium parisiense
© 2020 Ron Vanderhoff
Galium parisiense
© 2019 Diane Etchison

Galium porrigens    Climbing bedstraw,  Graceful bedstraw,  Nuttall's bedstraw
native
Vine, Shrub

RUBIACEAE

Galium porrigens
© 2005 Steve Matson
Galium porrigens
© 2005 Steve Matson
Galium porrigens
© 2005 Steve Matson

Galium trifidum    Three petaled bedstraw,  Threepetal bedstraw,  Trifid bedstraw
native
Perennial herb

RUBIACEAE

Galium trifidum
© 2020 Alaine Arslan
Galium trifidum
© 2022 Mike Russler
Galium trifidum
© 2005 Steve Matson

Galium triflorum    Fragrant bedstraw,  Sweet bedstraw,  Sweet scented bedstraw
native
Annual herb

RUBIACEAE

Galium triflorum
© 2022 Ken-ichi Ueda
Galium triflorum
© 2022 Ken-ichi Ueda
Galium triflorum
© 2018 Ken Hickman

Gamochaeta ustulata    Featherweed
native
Perennial herb

ASTERACEAE

Gamochaeta ustulata
© 2019 Gary McDonald
Gamochaeta ustulata
© 2021 Zoya Akulova-Barlow
Gamochaeta ustulata
© 2019 Gary McDonald

Garrya buxifolia    Boxleaf silk tassel,  Boxleaf silktassel,  Dwarf silktassel
native
Shrub

GARRYACEAE

Garrya buxifolia
© 2019 Susan McDougall
Garrya buxifolia
© 2021 Steve Conger
Garrya buxifolia
© 2021 Steve Matson

Garrya elliptica    Coast silk tassel,  Coast silktassel,  Silk tassel bush or quinine bush
native
Tree, Shrub

GARRYACEAE

Garrya elliptica
© 2004 Michael Charters
Garrya elliptica
© 2020 John Rawlings
Garrya elliptica
© 2020 Eliezer Margolis

Gastridium phleoides    Nit grass
non-native
Annual grass

POACEAE

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

Gaultheria shallon    Salal
native
Shrub

ERICACEAE

Gaultheria shallon
© 2016 Steve Matson
Gaultheria shallon
© 2016 Steve Matson
Gaultheria shallon
© 2016 Steve Matson

Genista monspessulana    French broom
invasive non-native
Shrub

FABACEAE

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

Gentiana affinis var. ovata    Gentian,  Pleated gentian
native
Perennial herb

GENTIANACEAE

Gentiana affinis var. ovata
© 2022 Zoya Akulova-Barlow
Gentiana affinis var. ovata
© 2019 David Greenberger
Gentiana affinis var. ovata
© 2023 Mary Ann Machi

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

Geranium lucidum    Shining geranium
invasive non-native
Annual, Biennial herb

GERANIACEAE

Geranium lucidum
© 2021 Dana York
Geranium lucidum
© 2016 Dr. Amadej Trnkoczy
Geranium lucidum
© 2017 Domenic Bongio

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

Geranium oreganum    Oregon geranium
native
Perennial herb

GERANIACEAE

Geranium oreganum
© 2021 Steve Conger
Geranium oreganum
© 2021 Steve Conger
Geranium oreganum
© 2021 Steve Conger

Geranium pusillum    Small flowered geranium,  Small geranium
non-native
Annual herb

GERANIACEAE

Geranium pusillum
© 2014 Zoya Akulova
Geranium pusillum
© 2016 Dr. Amadej Trnkoczy
Geranium pusillum
© 2012 Phil Pullen

Geranium robertianum    herb Robert
invasive non-native
Annual herb

GERANIACEAE

Geranium robertianum
© 2016 Steve Matson
Geranium robertianum
© 2016 Steve Matson
Geranium robertianum
© 2016 Steve Matson

Geum macrophyllum    Large leaved avens,  Largeleaf avens
native
Perennial herb

ROSACEAE

Geum macrophyllum
© 2022 Mike Russler
Geum macrophyllum
© 2023 John Malpas
Geum macrophyllum
© 2022 Mike Russler

Gilia capitata    Blue field gilia,  Bluehead gilia
native
Annual herb

POLEMONIACEAE

Gilia capitata
© 2011 Gerald Carr
Gilia capitata
© 2022 Ron Vanderhoff
Gilia capitata
© 2011 Gerald Carr

Gilia capitata ssp. pacifica    Pacific blue field gilia,  Pacific gilia
rare native
Annual herb

POLEMONIACEAE

Gilia capitata ssp. pacifica
© 2016 Steve Matson
Gilia capitata ssp. pacifica
© 2016 Steve Matson
Gilia capitata ssp. pacifica
© 2016 Steve Matson

Githopsis specularioides    Common bluecup,  Venus' looking glass
native
Annual herb

CAMPANULACEAE

Githopsis specularioides
© 2016 Steve Matson
Githopsis specularioides
© 2016 Steve Matson
Githopsis specularioides
© 2021 Mike Russler

Glechoma hederacea    Ground ivy
non-native
Perennial herb

LAMIACEAE

Glechoma hederacea
© 2005 Louis-M. Landry
Glechoma hederacea
© 2005 Louis-M. Landry
Glechoma hederacea
© 2004 Dr. Amadej Trnkoczy

Glehnia littoralis    American silvertop
native
Perennial herb

APIACEAE

Glehnia littoralis
© 2017 Steve Matson
Glehnia littoralis
© 2017 Steve Matson
Glehnia littoralis
© 2017 Steve Matson

Glehnia littoralis ssp. leiocarpa    American glehnia,  American silvertop
rare native
Perennial herb

APIACEAE

Glehnia littoralis ssp. leiocarpa
© 2017 Steve Matson
Glehnia littoralis ssp. leiocarpa
© 2017 Steve Matson
Glehnia littoralis ssp. leiocarpa
© 2017 Steve Matson

Glyceria elata    Fowl mannagrass,  Tall mannagrass
native
Perennial grass

POACEAE

Glyceria elata
© 2008 Steve Matson
Glyceria elata
© 2008 Steve Matson
Glyceria elata
© 2020 Susan McDougall

Glyceria fluitans    Water mannagrass
non-native
Perennial grass

POACEAE


Glyceria Xoccidentalis    Western manna grass
non-native
Perennial grass (aquatic)

POACEAE

Glyceria Xoccidentalis
© 2007 Gerald Carr
Glyceria Xoccidentalis
© 2007 Gerald Carr
Glyceria Xoccidentalis
© 2007 Gerald Carr

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

Goodyera oblongifolia    Rattlesnake plantain,  Western rattlesnake plantain
native
Perennial herb

ORCHIDACEAE

Goodyera oblongifolia
© 2020 Bob Sweatt
Goodyera oblongifolia
© 2019 Glenn Fine
Goodyera oblongifolia
© 2019 Julie A. Kierstead

Grindelia stricta    Coastal gumweed,  Gumweed,  Oregon gumweed
native
Perennial herb

ASTERACEAE

Grindelia stricta
© 2015 Steve Matson
Grindelia stricta
© 2015 Steve Matson
Grindelia stricta
© 2015 Steve Matson

Grindelia stricta var. platyphylla    Gumplant,  Gumweed,  Oregon gumweed
native
Perennial herb

ASTERACEAE

Grindelia stricta var. platyphylla
© 2020 Mary Conway
Grindelia stricta var. platyphylla
© 2019 Patrick Furtado
Grindelia stricta var. platyphylla
© 2014 Dee Warenycia

Hastingsia alba    Reed lily,  White bog hastingsia,  White hastingsia
native
Perennial herb

AGAVACEAE

Hastingsia alba
© 2018 Charles Russell
Hastingsia alba
© 2019 Jane Cohn
Hastingsia alba
© 2015 Steve Matson

Hastingsia serpenticola    Klamath rushlily,  Siskiyou hastingsia
native
Perennial herb

AGAVACEAE

Hastingsia serpenticola
© 2019 Julie Kierstead Nelson
Hastingsia serpenticola
© 2014 John Doyen
Hastingsia serpenticola
© 2023 Morgan Stickrod

Hastingsia serpentinicola    Klamath rushlily,  Siskiyou hastingsia
native
Perennial herb

AGAVACEAE

Hastingsia serpentinicola
© 2019 Julie Kierstead Nelson
Hastingsia serpentinicola
© 2014 John Doyen
Hastingsia serpentinicola
© 2023 Morgan Stickrod

Hedera helix    English ivy
invasive non-native
Vine, Shrub

ARALIACEAE

Hedera helix
© 2019 Claire Mallen
Hedera helix
© 2017 Allison Titus
Hedera helix
© 2022 Catherine Talbot

Helenium puberulum    Rosilla,  Sneezeweed
native
Perennial herb

ASTERACEAE

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

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

ASTERACEAE

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

Hemitomes congestum    Coneplant,  Gnome plant
native
Perennial herb (mycoparasitic)

ERICACEAE

Hemitomes congestum
© 2022 Hunter Breck
Hemitomes congestum
© 2022 Hunter Breck
Hemitomes congestum
© 2019 Ken Hickman

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. tracyi    Hayfield tarweed,  Tracy's tarplant
rare native
Annual herb

ASTERACEAE

Hemizonia congesta ssp. tracyi
© 2016 Steve Matson
Hemizonia congesta ssp. tracyi
© 2016 Steve Matson
Hemizonia congesta ssp. tracyi
© 2016 Steve Matson

Hemizonia tracyi    Hayfield tarweed,  Tracy's tarplant
rare native
Annual herb

ASTERACEAE

Hemizonia tracyi
© 2016 Steve Matson
Hemizonia tracyi
© 2016 Steve Matson
Hemizonia tracyi
© 2016 Steve Matson

Heracleum maximum    Common cow parsnip
native
Perennial herb

APIACEAE

Heracleum maximum
© 2019 Bob Sweatt
Heracleum maximum
© 2008 Neal Kramer
Heracleum maximum
© 2021 Julie A. Kierstead

Hesperocyparis macrocarpa    Monterey cypress
native
Tree

CUPRESSACEAE

Hesperocyparis macrocarpa
© 2017 Bryant Baker
Hesperocyparis macrocarpa
© 2019 Patrick Furtado
Hesperocyparis macrocarpa
© 2019 Cynthia Powell

Heterotheca oregona var. oregona    Oregon false goldenaster,  Oregon goldenaster
native
Perennial herb

ASTERACEAE

Heterotheca oregona var. oregona
© 2022 Dana York
Heterotheca oregona var. oregona
© 2020 Susan McDougall
Heterotheca oregona var. oregona
© 2020 Susan McDougall

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
© 2021 Doug Allshouse
Hieracium albiflorum
© 2020 Bob Sweatt

Hieracium bolanderi    Bolander's hawkweed
native
Perennial herb

ASTERACEAE

Hieracium bolanderi
© 2017 Steve Matson
Hieracium bolanderi
© 2017 Steve Matson
Hieracium bolanderi
© 2017 Steve Matson

Hieracium cynoglossoides    Hounds tongue hawkweed,  Houndstongue hawkweed,  Scouler's hawkweed
native
Perennial herb

ASTERACEAE

Hieracium cynoglossoides
© 2011 Steve Matson
Hieracium cynoglossoides
© 2011 Steve Matson
Hieracium cynoglossoides
© 2011 Steve Matson

Hieracium scouleri    Hounds tongue hawkweed,  Houndstongue hawkweed,  Scouler's hawkweed
native
Perennial herb

ASTERACEAE

Hieracium scouleri
© 2011 Steve Matson
Hieracium scouleri
© 2011 Steve Matson
Hieracium scouleri
© 2011 Steve Matson

Hippuris vulgaris    Common mare's tail,  Common mares tail,  Mare's tail
native
Perennial herb (aquatic)

PLANTAGINACEAE

Hippuris vulgaris
© 2019 Bob Sweatt
Hippuris vulgaris
© 2019 Bob Sweatt
Hippuris vulgaris
© 2018 Isaac Chellman

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

POACEAE

Holcus lanatus
© 2019 Bill Haley
Holcus lanatus
© 2019 Bill Haley
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

Hordeum brachyantherum    Meadow barley
native
Perennial grass

POACEAE

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

Hordeum jubatum    Fox tail barley,  Foxtail barley,  Squirreltail barley
native
Perennial grass

POACEAE

Hordeum jubatum
© 2019 Rachelle Gray
Hordeum jubatum
© 2009 Barry Rice
Hordeum jubatum
© 2009 Zoya Akulova

Hordeum marinum ssp. gussonianum    Seaside barley
invasive non-native
Annual grass

POACEAE

Hordeum marinum ssp. gussonianum
© 2015 Chris Jaster
Hordeum marinum ssp. gussonianum
© 2017 Julia Dorosh
Hordeum marinum ssp. gussonianum
© 2015 Chris Jaster

Hordeum murinum    Farmer's foxtail,  Foxtail barley,  Mouse barley
invasive non-native
Annual grass

POACEAE

Hordeum murinum
© 2018 Gary McDonald
Hordeum murinum
© 2019 Gary McDonald
Hordeum murinum
© 2017 Gary McDonald

Hordeum murinum ssp. glaucum    Blue foxtail,  Smooth barley
non-native
Annual grass

POACEAE

Hordeum murinum ssp. glaucum
© 2018 Gary McDonald
Hordeum murinum ssp. glaucum
© 2019 Gary McDonald
Hordeum murinum ssp. glaucum
© 2017 Gary McDonald

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

Hordeum murinum ssp. murinum    Wall barley
non-native
Annual grass

POACEAE

Hordeum murinum ssp. murinum
© 2023 Fidel Garcia Cova
Hordeum murinum ssp. murinum
© 2015 jamie smith
Hordeum murinum ssp. murinum
© 2023 Fidel Garcia Cova

Horkelia sericata    Howell's horkelia,  Silky horkelia
rare native
Perennial herb

ROSACEAE

Horkelia sericata
© 2024 Ryan O'Dell
Horkelia sericata
© 2014 John Doyen
Horkelia sericata
© 2010 Sean B. Smith

Hosackia gracilis    Harlequin lotus
rare native
Perennial herb

FABACEAE

Hosackia gracilis
© 2019 David Greenberger
Hosackia gracilis
© 2023 Steve Conger
Hosackia gracilis
© 2023 Mary Ann Machi

Hosackia oblongifolia    Narrow leaved lotus
native
Perennial herb

FABACEAE

Hosackia oblongifolia
© 2006 Steve Matson
Hosackia oblongifolia
© 2019 R.A. Chasey
Hosackia oblongifolia
© 2013 BOB CASE

Hosackia pinnata    Pinnate lotus
native
Perennial herb

FABACEAE

Hosackia pinnata
© 2015 Steve Matson
Hosackia pinnata
© 2015 Steve Matson
Hosackia pinnata
© 2015 Steve Matson

Hosackia rosea    Rose flowered lotus
native
Perennial herb

FABACEAE

Hosackia rosea
© 2019 Heather Morrison
Hosackia rosea
© 2022 Zoya Akulova-Barlow
Hosackia rosea
© 2018 Claire Brown


Hydrocotyle ranunculoides    Floating marsh pennywort,  Floating marshpennywort,  Marsh pennywort
native
Perennial herb

ARALIACEAE

Hydrocotyle ranunculoides
© 2019 R.A. Chasey
Hydrocotyle ranunculoides
© 2023 R.A. Chasey
Hydrocotyle ranunculoides
© 2017 Michael Mitchell

Hydrophyllum occidentale    California waterleaf,  Western waterleaf
native
Perennial herb

HYDROPHYLLACEAE

Hydrophyllum occidentale
© 2020 Susan McDougall
Hydrophyllum occidentale
© 2020 Susan McDougall
Hydrophyllum occidentale
© 2020 Steve Conger

Hydrophyllum tenuipes    Pacific waterleaf
native
Perennial herb

HYDROPHYLLACEAE

Hydrophyllum tenuipes
© 2024 Dana York
Hydrophyllum tenuipes
© 2024 Dana York
Hydrophyllum tenuipes
© 2011 Jean Pawek

Hypericum anagalloides    Creeping st. john's wort,  Tinker's penny
native
Annual, Perennial herb

HYPERICACEAE

Hypericum anagalloides
© 2019 Bob Sweatt
Hypericum anagalloides
© 2020 Joaquin Hale
Hypericum anagalloides
© 2021 Mike Russler

Hypericum beanii    Small Tree-Mallow


Hypericum calycinum    Aaron's beard
non-native
Shrub

HYPERICACEAE

Hypericum calycinum
© 2019 Zachary Snider
Hypericum calycinum
© 2018 Brian Charles
Hypericum calycinum
© 2021 Lenihan Mazur

Hypericum formosum    St john's wort
native
Perennial herb

HYPERICACEAE

Hypericum formosum
© 2011 Steven Thorsted
Hypericum formosum
© 2005 Jerry Murray

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

Hypericum scouleri    Scouler's St John's wort
native
Perennial herb

HYPERICACEAE

Hypericum scouleri
© 2021 Julie A. Kierstead
Hypericum scouleri
© 2022 Steve Matson
Hypericum scouleri
© 2019 Julie Kierstead Nelson

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

Ilex aquifolium    English holly,  Holly
invasive non-native
Tree, Shrub

AQUIFOLIACEAE

Ilex aquifolium
© 2021 Cynthia Powell
Ilex aquifolium
© 2021 Donald Burk
Ilex aquifolium
© 2019 Tatiana Manzanillo

Iris douglasiana    Douglas iris,  Douglas' iris
native
Perennial herb

IRIDACEAE

Iris douglasiana
© 2020 Susan McDougall
Iris douglasiana
© 2019 Patrick Furtado
Iris douglasiana
© 2022 Suzanne L. Weakley

Iris innominata    Del norte county iris
rare native
Perennial herb (rhizomatous)

IRIDACEAE

Iris innominata
© 2010 Gerald Carr
Iris innominata
© 2010 Gerald Carr
Iris innominata
© 2010 Gerald Carr

Iris tenax ssp. klamathensis    Klamath iris,  Orleans iris
rare native
Perennial herb (rhizomatous)

IRIDACEAE

Iris tenax ssp. klamathensis
© 2017 Dana York
Iris tenax ssp. klamathensis
© 2017 Dana York
Iris tenax ssp. klamathensis
© 2012 Dana York

Iris tenuissima    Iris,  Longtube iris,  Slender iris
native
Perennial herb

IRIDACEAE

Iris tenuissima
© 2009 Julie A. Kierstead
Iris tenuissima
© 2010 Julie A. Kierstead
Iris tenuissima
© 2021 Jamie Spielmann

Isatis tinctoria    Dyer's woad,  Dyers woad
invasive non-native
Biennial, Perennial herb

BRASSICACEAE

Isatis tinctoria
© 2019 Dana York
Isatis tinctoria
© 2019 Julie Kierstead Nelson
Isatis tinctoria
© 2021 Steve Matson

Isolepis setacea    Bristleleaf bulrush
non-native
Perennial grasslike herb

CYPERACEAE

Isolepis setacea
© 2004 Steve Matson
Isolepis setacea
© 2004 Steve Matson
Isolepis setacea
© 2004 Steve Matson

Juglans   


Juglans regia    English walnut
non-native
Tree

JUGLANDACEAE

Juglans regia
© 2018 Ron Vanderhoff
Juglans regia
© 2019 Janice Kuch
Juglans regia
© 2014 Richard Chasey

Juncus bolanderi    Bolander's rush
native
Perennial grasslike herb

JUNCACEAE

Juncus bolanderi
© 2019 Ken Hickman
Juncus bolanderi
© 2019 Ken Hickman
Juncus bolanderi
© 2019 John Rawlings

Juncus breweri    Brewer's rush
native
Perennial grasslike herb

JUNCACEAE

Juncus breweri
© 2016 Steve Matson
Juncus breweri
© 2016 Steve Matson
Juncus breweri
© 2016 Steve Matson

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

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 confusus    Colorado rush
native
Perennial grasslike herb

JUNCACEAE

Juncus confusus
© 2015 Steve Matson
Juncus confusus
© 2015 Steve Matson
Juncus confusus
© 2015 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 effusus ssp. pacificus    Pacific rush
native
Perennial grasslike herb

JUNCACEAE

Juncus effusus ssp. pacificus
© 2009 Toni Corelli
Juncus effusus ssp. pacificus
© 2021 R.A. Chasey
Juncus effusus ssp. pacificus
© 2021 John Rawlings

Juncus hesperius    Coast or bog rush
native
Perennial grasslike herb

JUNCACEAE

Juncus hesperius
© 2004 Steve Matson
Juncus hesperius
© 2019 Patrick Furtado
Juncus hesperius
© 2021 John Rawlings

Juncus lesueurii    Dune rush
native
Perennial grasslike herb

JUNCACEAE

Juncus lesueurii
© 2009 Toni Corelli
Juncus lesueurii
© 2008 Toni Corelli
Juncus lesueurii
© 2008 Toni Corelli

Juncus occidentalis    Rush,  Slender juncus,  Western rush
native
Perennial grasslike herb

JUNCACEAE

Juncus occidentalis
© 2021 Toni Corelli
Juncus occidentalis
© 2021 Dick Rawson
Juncus occidentalis
© 2021 Dick Rawson

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 tenuis    Poverty rush,  Slender rush
native
Perennial grasslike herb

JUNCACEAE

Juncus tenuis
© 2020 Peter Warner
Juncus tenuis
© 2008 Keir Morse
Juncus tenuis
© 2020 Peter Warner

Juncus tenuis var. congestus    Rush,  Slender juncus,  Western rush
native
Perennial grasslike herb

JUNCACEAE

Juncus tenuis var. congestus
© 2021 Toni Corelli
Juncus tenuis var. congestus
© 2021 Dick Rawson
Juncus tenuis var. congestus
© 2021 Dick Rawson

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

Juniperus communis    Common juniper,  Dwarf juniper
native
Shrub

CUPRESSACEAE

Juniperus communis
© 2019 Bob Sweatt
Juniperus communis
© 2020 Donald Burk
Juniperus communis
© 2010 Louis-M. Landry

Juniperus communis var. saxatilis    Common juniper
native
Shrub

CUPRESSACEAE

Juniperus communis var. saxatilis
© 2019 Bob Sweatt
Juniperus communis var. saxatilis
© 2022 Dana York
Juniperus communis var. saxatilis
© 2019 Bob Sweatt

Keckiella corymbosa    Red beardtongue,  Redwood keckiella
native
Shrub

PLANTAGINACEAE

Keckiella corymbosa
© 2021 Mary Ann Machi
Keckiella corymbosa
© 2019 David Greenberger
Keckiella corymbosa
© 2022 Ryan O'Dell

Koeleria cristata    June grass,  Prairie junegrass
native
Perennial grass

POACEAE

Koeleria cristata
© 2015 Steve Matson
Koeleria cristata
© 2015 Steve Matson
Koeleria cristata
© 2015 Steve Matson

Koeleria macrantha    June grass,  Prairie junegrass
native
Perennial grass

POACEAE

Koeleria macrantha
© 2015 Steve Matson
Koeleria macrantha
© 2015 Steve Matson
Koeleria macrantha
© 2015 Steve Matson

Kopsiopsis strobilacea    ground cone,  groundcone ,  California ground-cone
native
Perennial herb (parasitic)

OROBANCHACEAE

Kopsiopsis strobilacea
© 2019 Steve Conger
Kopsiopsis strobilacea
© 2023 Timothy Boomer
Kopsiopsis strobilacea
© 2019 Jonathan Lee

Lactuca saligna    Narrow leaved wild lettuce,  Willow lettuce,  Willowleaf lettuce
non-native
Annual herb

ASTERACEAE

Lactuca saligna
© 2021 Don Hollander
Lactuca saligna
© 2019 Stacie Wolny
Lactuca saligna
© 2021 Don Hollander

Lapsana communis    Common nipplewort,  Nipplewort
non-native
Annual herb

ASTERACEAE

Lapsana communis
© 2023 Dana York
Lapsana communis
© 2021 R.A. Chasey
Lapsana communis
© 2019 Jennifer Mo

Lathyrus brownii    Brown's brush pea
native
Perennial herb

FABACEAE

Lathyrus brownii
© 2019 Julie Kierstead Nelson
Lathyrus brownii
© 2017 David popp
Lathyrus brownii
© 1992 Gary A. Monroe

Lathyrus delnorticus    Del norte pea
rare native
Perennial herb

FABACEAE

Lathyrus delnorticus
© 2020 Kolby Lundgren
Lathyrus delnorticus
© 2022 Tricia Bippus
Lathyrus delnorticus
© 2024 Julie A. Kierstead

Lathyrus japonicus    Beach pea,  Sea pea
rare native
Perennial herb

FABACEAE

Lathyrus japonicus
© 2017 Steve Matson
Lathyrus japonicus
© 2017 Steve Matson
Lathyrus japonicus
© 2017 Steve Matson

Lathyrus japonicus var. glaber    Beach pea,  Sea pea
rare native
Perennial herb

FABACEAE

Lathyrus japonicus var. glaber
© 2017 Steve Matson
Lathyrus japonicus var. glaber
© 2017 Steve Matson
Lathyrus japonicus var. glaber
© 2017 Steve Matson

Lathyrus latifolius    Everlasting pea,  Perennial pea,  Perennial sweet pea
non-native
Perennial herb

FABACEAE

Lathyrus latifolius
© 2020 Jutta Burger
Lathyrus latifolius
© 2019 Cynthia Powell
Lathyrus latifolius
© 2021 Sherry Adams

Lathyrus littoralis    Beach pea,  Silky beach pea
native
Perennial herb

FABACEAE

Lathyrus littoralis
© 2017 Steve Matson
Lathyrus littoralis
© 2017 Steve Matson
Lathyrus littoralis
© 2020 Steve Conger

Lathyrus nevadensis ssp. nevadensis    Sierra nevada pea,  Sierra pea
native
Perennial herb

FABACEAE

Lathyrus nevadensis ssp. nevadensis
© 2019 Susan McDougall
Lathyrus nevadensis ssp. nevadensis
© 2022 Ryan O'Dell
Lathyrus nevadensis ssp. nevadensis
© 2019 Susan McDougall

Lathyrus nevadensis var. nevadensis    Sierra nevada pea,  Sierra pea
native
Perennial herb

FABACEAE

Lathyrus nevadensis var. nevadensis
© 2019 Susan McDougall
Lathyrus nevadensis var. nevadensis
© 2022 Ryan O'Dell
Lathyrus nevadensis var. nevadensis
© 2019 Susan McDougall

Lathyrus palustris    Marsh pea
rare native
Perennial herb

FABACEAE

Lathyrus palustris
© 2021 Kipp Pow
Lathyrus palustris
© 2022 Dana York
Lathyrus palustris
© 2008 Jennifer L. Kalt

Lathyrus pauciflorus ssp. brownii    Brown's brush pea
native
Perennial herb

FABACEAE

Lathyrus pauciflorus ssp. brownii
© 2019 Julie Kierstead Nelson
Lathyrus pauciflorus ssp. brownii
© 2017 David popp
Lathyrus pauciflorus ssp. brownii
© 1992 Gary A. Monroe

Lathyrus sphaericus    Grass peavine
non-native
Annual herb

FABACEAE

Lathyrus sphaericus
© 2019 Bill Haley
Lathyrus sphaericus
© 2019 Bill Haley
Lathyrus sphaericus
© 2018 James Gonsman

Lathyrus torreyi    Redwood pea,  Torrey's pea
native
Perennial herb

FABACEAE

Lathyrus torreyi
© 2018 Hayley Ross
Lathyrus torreyi
© 2018 Hayley Ross
Lathyrus torreyi
© 2019 Jon Thompson

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

FABACEAE

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

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
© 2013 Ron Clark
Lathyrus vestitus var. ochropetalus
© 2013 Ron Clark

Lathyrus vestitus var. vestitus    Common pacific pea,  Hillside pea,  Wild sweetpea
native
Perennial herb

FABACEAE

Lathyrus vestitus var. vestitus
© 2023 Steve Conger
Lathyrus vestitus var. vestitus
© 2022 Charles Russell
Lathyrus vestitus var. vestitus
© 2015 Chris Jaster

Layia carnosa    Beach layia,  Beach tidytips
rare native
Annual herb

ASTERACEAE

Layia carnosa
© 2020 David Greenberger
Layia carnosa
© 2019 Scott Yarger
Layia carnosa
© 2016 Steve Matson

Lemna   


non-native
Perennial herb

ASTERACEAE

Leontodon leysseri
© 2008 Dee Warenycia
Leontodon leysseri
© 2009 Zoya Akulova
Leontodon leysseri
© 2009 Zoya Akulova

Leontodon saxatilis    Hawkbit
non-native
Annual herb

ASTERACEAE

Leontodon saxatilis
© 2008 Steve Matson
Leontodon saxatilis
© 2008 Steve Matson
Leontodon saxatilis
© 2023 Alaine Arslan

Lepidium didymum    Lesser swine cress
non-native
Annual herb

BRASSICACEAE

Lepidium didymum
© 2022 Shawna Martinez
Lepidium didymum
© 2023 Ron Vanderhoff
Lepidium didymum
© 2023 Ron Vanderhoff

Leptosiphon androsaceus    False babystars
native
Annual herb

POLEMONIACEAE

Leptosiphon androsaceus
© 2010 Jeffrey Hapeman
Leptosiphon androsaceus
© 2020 R.A. Chasey
Leptosiphon androsaceus
© 2014 James Gonsman

Leptosiphon bicolor    True babystars
native
Annual herb

POLEMONIACEAE

Leptosiphon bicolor
© 2008 Steve Matson
Leptosiphon bicolor
© 2008 Steve Matson
Leptosiphon bicolor
© 2008 Steve Matson

Leucanthemum vulgare    Oxe eye daisy,  Oxeye daisy
invasive non-native
Perennial herb

ASTERACEAE

Leucanthemum vulgare
© 2020 Kim Cabrera
Leucanthemum vulgare
© 2019 Julian Geoghegan
Leucanthemum vulgare
© 2017 James Gonsman

Ligusticum apiifolium    Celery leaved lovage,  Celeryleaf licorice root,  Lovage
native
Perennial herb

APIACEAE

Ligusticum apiifolium
© 2017 Steve Matson
Ligusticum apiifolium
© 2017 Steve Matson
Ligusticum apiifolium
© 2017 Steve Matson

Ligusticum californicum    California licorice root,  California lovage
native
Perennial herb

APIACEAE

Ligusticum californicum
© 2017 Steve Matson
Ligusticum californicum
© 2017 Steve Matson
Ligusticum californicum
© 2017 Steve Matson

Lilium bolanderi    Bolander's lily
rare native
Perennial herb (bulb)

LILIACEAE

Lilium bolanderi
© 2018 Anna Sereno
Lilium bolanderi
© 2018 Anna Sereno
Lilium bolanderi
© 2020 Kolby Lundgren

Lilium columbianum    Columbia lily,  Columbian lily,  Oregon lily
native
Perennial herb

LILIACEAE

Lilium columbianum
© 2021 Mary Ann Machi
Lilium columbianum
© 2023 Mary Ann Machi
Lilium columbianum
© 2013 James Gonsman

Limnanthes douglasii ssp. nivea    Snow white meadowfoam
native
Annual herb

LIMNANTHACEAE

Limnanthes douglasii ssp. nivea
© 2018 Evan Johnson
Limnanthes douglasii ssp. nivea
© 2019 Cynthia Powell
Limnanthes douglasii ssp. nivea
© 2019 Cynthia Powell

Linanthus bicolor ssp. bicolor    True babystars
native
Annual herb

POLEMONIACEAE

Linanthus bicolor ssp. bicolor
© 2008 Steve Matson
Linanthus bicolor ssp. bicolor
© 2008 Steve Matson
Linanthus bicolor ssp. bicolor
© 2008 Steve Matson

Linaria dalmatica    Dalmatian toadflax
non-native
Perennial herb

PLANTAGINACEAE

Linaria dalmatica
© 2022 Jonathan Widdicombe
Linaria dalmatica
© 2005 Louis-M. Landry
Linaria dalmatica
© 2022 Jonathan Widdicombe

Linaria genistifolia ssp. dalmatica    Dalmatian toadflax
invasive non-native
Perennial herb

PLANTAGINACEAE

Linaria genistifolia ssp. dalmatica
© 2021 Dennis Diaz
Linaria genistifolia ssp. dalmatica
© 2016 Phil Zortman
Linaria genistifolia ssp. dalmatica
© 2019 Caleb Cole

Linum bienne    Narrow leaved flax,  Pale flax,  Small flowered flax
non-native
Annual herb

LINACEAE

Linum bienne
© 2019 Ken Lunders
Linum bienne
© 2021 Cameron Chabre
Linum bienne
© 2018 Cynthia Powell

Liriodendron tulipifera    Tuliptree
non-native
Tree

MAGNOLIACEAE

Liriodendron tulipifera
© 2008 Gary W. Sargent
Liriodendron tulipifera
© 2005 Louis-M. Landry

Listera banksiana    Northwest twayblade
native
Perennial herb

ORCHIDACEAE

Listera banksiana
© 2019 Matt Berger
Listera banksiana
© 2019 Matt Berger
Listera banksiana
© 2019 Kolby Lundgren

Listera cordata    Heart leaved twayblade,  Heartleaf twayblade
rare native
Perennial herb

ORCHIDACEAE

Listera cordata
© 2021 Timothy Boomer
Listera cordata
© 2021 Timothy Boomer
Listera cordata
© 2022 Steve Conger

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 affine ssp. affine    Common woodland star,  San Francisco woodland star
native
Perennial herb

SAXIFRAGACEAE

Lithophragma affine ssp. affine
© 2018 Steve Matson
Lithophragma affine ssp. affine
© 2018 Steve Matson
Lithophragma affine ssp. affine
© 2018 Steve Matson

Lithophragma parviflorum    Pink woodland star,  Prairie star,  Smallflower woodland star
native
Perennial herb

SAXIFRAGACEAE

Lithophragma parviflorum
© 2019 Gary McDonald
Lithophragma parviflorum
© 2022 Catherine Chang
Lithophragma parviflorum
© 2019 Bob Sweatt

Logfia gallica    Narrowleaf cottonrose
non-native
Annual herb

ASTERACEAE

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

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

POACEAE

Lolium perenne ssp. multiflorum
© 2019 Ron Vanderhoff
Lolium perenne ssp. multiflorum
© 2017 Gary McDonald
Lolium perenne ssp. multiflorum
© 2021 Ron Vanderhoff

Lomatium dissectum    Fern leaved lomatium,  Fernleaf biscuitroot
native
Perennial herb

APIACEAE

Lomatium dissectum
© 2020 Bob Sweatt
Lomatium dissectum
© 2019 Bob Sweatt
Lomatium dissectum
© 2020 Bob Sweatt

Lomatium macrocarpum    Bigseed biscuitroot,  Large fruited lomatium
native
Perennial herb

APIACEAE

Lomatium macrocarpum
© 2021 John Game
Lomatium macrocarpum
© 2023 R.A. Chasey
Lomatium macrocarpum
© 2023 R.A. Chasey

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    Pink honeysuckle
native
Vine, Shrub

CAPRIFOLIACEAE

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

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

Lonicera involucrata    Coast twinberry,  Twin berry,  Twinberry honeysuckle
native
Shrub

CAPRIFOLIACEAE

Lonicera involucrata
© 2021 Suzanne L. Weakley
Lonicera involucrata
© 2020 Susan McDougall
Lonicera involucrata
© 2020 Camille Nowell

Lonicera involucrata var. ledebourii    Coast twinberry,  Twinberry honeysuckle
native
Shrub

CAPRIFOLIACEAE

Lonicera involucrata var. ledebourii
© 2014 James Gonsman
Lonicera involucrata var. ledebourii
© 2022 Suzanne L. Weakley
Lonicera involucrata var. ledebourii
© 2010 Toni Corelli

Lonicera nitida    Small Tree-Mallow


Lophochlaena refracta    Nodding semaphore grass,  Nodding semaphoregrass
rare native
Perennial grass (rhizomatous)

POACEAE

Lophochlaena refracta
© 2022 R.A. Chasey
Lophochlaena refracta
© 2022 R.A. Chasey
Lophochlaena refracta
© 2018 Claire Brown

Lotus aboriginum    Small Tree-Mallow


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

FABACEAE

Lotus purshianus
© 2019 Rachelle Gray
Lotus purshianus
© 2013 Arcangelo Wessells
Lotus purshianus
© 2020 Bob Sweatt

Lotus uliginosus    Marsh lotus
non-native
Perennial herb

FABACEAE

Lotus uliginosus
© 2006 Doreen L. Smith
Lotus uliginosus
© 2009 Phil Pullen
Lotus uliginosus
© 2009 Phil Pullen

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

Luina hypoleuca    Little leaf luina,  Littleleaf silverback
native
Perennial herb

ASTERACEAE

Luina hypoleuca
© 2022 Mary Ann Machi
Luina hypoleuca
© 2022 Mary Ann Machi
Luina hypoleuca
© 2023 Mary Ann Machi

Lupinus andersonii    Anderson's lupine
native
Perennial herb

FABACEAE

Lupinus andersonii
© 2006 Steve Matson
Lupinus andersonii
© 2006 Steve Matson
Lupinus andersonii
© 2006 Steve Matson

Lupinus arboreus    Coastal bush lupine,  Yellow bush lupine
native
Shrub

FABACEAE

Lupinus arboreus
© 2019 Patrick Furtado
Lupinus arboreus
© 2014 Steve Matson
Lupinus arboreus
© 2020 Steve Matson

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 bicolor ssp. umbellatus    Annual lupine,  Bicolored lupine,  Miniature lupine
native
Annual, Perennial herb

FABACEAE

Lupinus bicolor ssp. umbellatus
© 2024 Mary Ann Machi
Lupinus bicolor ssp. umbellatus
© 2022 Mike Russler
Lupinus bicolor ssp. umbellatus
© 2024 Mary Ann Machi

Lupinus latifolius    Bigleaf lupine,  Broad leaf lupine,  Broadleaf lupine
native
Perennial herb

FABACEAE

Lupinus latifolius
© 2017 Steve Matson
Lupinus latifolius
© 2017 Steve Matson
Lupinus latifolius
© 2008 Steve Matson

Lupinus latifolius ssp. latifolius    Broad leaf lupine
native
Perennial herb

FABACEAE

Lupinus latifolius ssp. latifolius
© 2021 John Rawlings
Lupinus latifolius ssp. latifolius
© 2020 Paul Aigner
Lupinus latifolius ssp. latifolius
© 2021 Steve Matson

Lupinus littoralis    Seashore lupine
native
Perennial herb

FABACEAE

Lupinus littoralis
© 2022 Mary Sue Ittner
Lupinus littoralis
© 2008 Gerald D. Carr
Lupinus littoralis
© 2008 Gerald D. Carr

Lupinus nanus    Sky lupine
native
Annual herb

FABACEAE

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

Lupinus rivularis    Riverbank lupine
native
Perennial herb

FABACEAE

Lupinus rivularis
© 2017 Steve Matson
Lupinus rivularis
© 2017 Steve Matson
Lupinus rivularis
© 2017 Steve Matson

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

JUNCACEAE

Luzula comosa
© 2019 Matt Berger
Luzula comosa
© 2021 Steve Matson
Luzula comosa
© 2021 Steve Matson

Luzula parviflora    Small flowered wood rush,  Smallflowered woodrush
native
Perennial grasslike herb

JUNCACEAE

Luzula parviflora
© 2022 Dana York
Luzula parviflora
© 2019 David Greenberger
Luzula parviflora
© 2012 Aaron Arthur

Luzula subsessilis    Pacific woodrush
native
Perennial grasslike herb

JUNCACEAE

Luzula subsessilis
© 2024 John Rawlings
Luzula subsessilis
© 2021 David popp
Luzula subsessilis
© 2021 David popp

Lycopodium clavatum    Running clubmoss,  Running pine
rare native

LYCOPODIACEAE

Lycopodium clavatum
© 2020 Wyatt Dooley
Lycopodium clavatum
© 2018 Jonathan Lee
Lycopodium clavatum
© 2021 Gabe Cashman

Lysichiton americanus    American skunkcabbage,  Yellow skunk cabbage
native
Perennial herb

ARACEAE

Lysichiton americanus
© 2011 Paul Preston
Lysichiton americanus
© 2016 Steve Matson
Lysichiton americanus
© 2016 Steve Matson

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

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

ASTERACEAE

Madia capitata
© 2013 Ron Vanderhoff
Madia capitata
© 2021 David Wolfson
Madia capitata
© 2021 Zoya Akulova-Barlow

Madia elegans    Common madia
native
Annual herb

ASTERACEAE

Madia elegans
© 2021 Jamie Spielmann
Madia elegans
© 2021 Mike Russler
Madia elegans
© 2020 Diane Etchison

Madia elegans ssp. elegans    Common madia
native
Annual herb

ASTERACEAE

Madia elegans ssp. elegans
© 2021 Jamie Spielmann
Madia elegans ssp. elegans
© 2021 Mike Russler
Madia elegans ssp. elegans
© 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
© 2022 Mike Russler
Madia gracilis
© 2021 Amber Bedgood
Madia gracilis
© 2019 Ron Vanderhoff

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

ASTERACEAE

Madia sativa
© 2013 Ron Vanderhoff
Madia sativa
© 2021 David Wolfson
Madia sativa
© 2021 Zoya Akulova-Barlow

Magnolia grandiflora    Southern magnolia
non-native
Tree

MAGNOLIACEAE

Magnolia grandiflora
© 2018 Philip Oakley Otto
Magnolia grandiflora
© Nick Kurzenko
Magnolia grandiflora
© 2018 Philip Oakley Otto

Mahonia aquifolium    Mountain grape,  Mountaingrape,  Oregon grape
native
Shrub

BERBERIDACEAE

Mahonia aquifolium
© 2017 Steve Matson
Mahonia aquifolium
© 2017 Steve Matson
Mahonia aquifolium
© 2021 Steve Matson

Maianthemum dilatatum    False lily of the valley,  False lily of the vally,  Pacific may lily
native
Perennial herb

RUSCACEAE

Maianthemum dilatatum
© 2021 Steve Matson
Maianthemum dilatatum
© 2021 Steve Matson
Maianthemum dilatatum
© 2021 Steve Matson

Maianthemum racemosum    Feathery false lily of the valley
native
Perennial herb

RUSCACEAE

Maianthemum racemosum
© 2020 Bob Sweatt
Maianthemum racemosum
© 2018 Steve Matson
Maianthemum racemosum
© 2019 Cynthia Powell

Maianthemum racemosum ssp. amplexicaule    Feathery false lily of the valley
native
Perennial herb

RUSCACEAE

Maianthemum racemosum ssp. amplexicaule
© 2020 Bob Sweatt
Maianthemum racemosum ssp. amplexicaule
© 2018 Steve Matson
Maianthemum racemosum ssp. amplexicaule
© 2019 Cynthia Powell

Maianthemum stellatum    Starry false lily of the valley
native
Perennial herb

RUSCACEAE

Maianthemum stellatum
© 2003 Steve Matson
Maianthemum stellatum
© 2003 Steve Matson
Maianthemum stellatum
© 2003 Steve Matson

Malus fusca    Oregon crab apple,  Oregon crabapple
native
Tree, Shrub

ROSACEAE

Malus fusca
© 2018 Adam Canter
Malus fusca
© 2018 Cynthia Powell
Malus fusca
© 2018 Cynthia Powell

Malus pumila    Paradise apple
non-native
Tree

ROSACEAE

Malus pumila
© 2014 Ramona Robison
Malus pumila
© 2018 Angelique Herman
Malus pumila
© 2005 Louis-M. Landry

Malva neglecta    Common mallow,  Dwarf mallow
non-native
Annual, Perennial herb

MALVACEAE

Malva neglecta
© 2022 Bob Sweatt
Malva neglecta
© 2019 Randy Huey
Malva neglecta
© 2022 Bob Sweatt

Marah oreganus    Coast man-root
native
Perennial herb, Vine

CUCURBITACEAE

Marah oreganus
© 2016 Steve Matson
Marah oreganus
© 2016 Steve Matson
Marah oreganus
© 2016 Steve Matson

Matricaria discoidea    Pineapple weed
native
Annual herb

ASTERACEAE

Matricaria discoidea
© 2008 Steve Matson
Matricaria discoidea
© 2008 Steve Matson
Matricaria discoidea
© 2018 Stacie Wolny

Medicago arabica    Spotted burclover,  Spotted medick
non-native
Annual herb

FABACEAE

Medicago arabica
© 2023 R.A. Chasey
Medicago arabica
© 2023 R.A. Chasey
Medicago arabica
© null

Medicago lupulina    Black medick
non-native
Annual, Perennial herb