logo Calflora  Illustrated Plant List 
Cuesta Ridge East
Cuesta Ridge East from Highway 101 to Upper Lopez Canyon San Luis Obispo County, California

San Luis Obispo County

David Keil  / CNPS-SLO  (2019-06-09)

Record Detail Nearby Surveys What Grows Here?
282 PLANTS
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

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

native
Perennial herb

FABACEAE

Acmispon glaber var. glaber
© 2020 Ron Vanderhoff
Acmispon glaber var. glaber
© 2020 Ron Vanderhoff
Acmispon glaber var. glaber
© 2020 Ron Vanderhoff

Acmispon junceus var. biolettii    Bioletti's rush lotus
native
Perennial herb

FABACEAE

Acmispon junceus var. biolettii
© 2021 Toni Corelli
Acmispon junceus var. biolettii
© 2024 Robert Steers
Acmispon junceus var. biolettii
© 2021 Toni Corelli

Acmispon parviflorus    Hill lotus
native
Annual herb

FABACEAE

Acmispon parviflorus
© 2008 Steve Matson
Acmispon parviflorus
© 2022 Dana York
Acmispon parviflorus
© 2008 Steve Matson

Acmispon strigosus    Strigose lotus
native
Annual herb

FABACEAE

Acmispon strigosus
© 2024 Mike Russler
Acmispon strigosus
© 2023 Ron Vanderhoff
Acmispon strigosus
© 2016 Steve Matson

Acourtia microcephala    Sacapellote
native
Perennial herb

ASTERACEAE

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

native
Tree, Shrub

ROSACEAE

Adenostoma fasciculatum var. fasciculatum
© 2019 Steve Matson
Adenostoma fasciculatum var. fasciculatum
© 2019 Steve Matson
Adenostoma fasciculatum var. fasciculatum
© 2019 Steve Matson

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 jordanii    Adiantum,  maiden hair fern
native
Fern

PTERIDACEAE

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

Agoseris grandiflora var. grandiflora    Giant mountain dandelion
native
Perennial herb

ASTERACEAE

Agoseris grandiflora var. grandiflora
© 2007 Gerald Carr
Agoseris grandiflora var. grandiflora
© 2007 Gerald Carr
Agoseris grandiflora var. grandiflora
© 2012 Michael Mitchell

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 hooveri    Hoover's bent grass,  Hoover's bentgrass
rare native
Perennial grass

POACEAE

Agrostis hooveri
© 2008 Adonis (Don) Tate
Agrostis hooveri
© 2017 Adonis (Don) Tate

Allophyllum glutinosum    Sticky false gilia,  Sticky false gilyflower
native
Annual herb

POLEMONIACEAE

Allophyllum glutinosum
© 2020 Ron Vanderhoff
Allophyllum glutinosum
© 2023 Ron Vanderhoff
Allophyllum glutinosum
© 2022 Ron Vanderhoff

Amaryllis belladonna    Belladonna lily
non-native
Perennial herb

AMARYLLIDACEAE

Amaryllis belladonna
© 2016 Camille Nowell
Amaryllis belladonna
© 2020 Jacob Martin
Amaryllis belladonna
© 2022 Ron Vanderhoff

Amorpha californica var. californica    California false indigo
native
Shrub

FABACEAE

Amorpha californica var. californica
© 2019 Ron Vanderhoff
Amorpha californica var. californica
© 2019 Bryant Baker
Amorpha californica var. californica
© 2019 Ron Vanderhoff

Amsinckia intermedia    Common fiddleneck
native
Annual herb

BORAGINACEAE

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

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

Anthriscus caucalis    Bur chervil
non-native
Annual herb, Vine

APIACEAE

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

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

PLANTAGINACEAE

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

native
Perennial herb

PLANTAGINACEAE

Antirrhinum thompsonii
© 2018 Michael Mitchell
Antirrhinum thompsonii
© Geoff Burleigh
Antirrhinum thompsonii
© 2024 Mary Conway

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

ROSACEAE

Aphanes occidentalis
© 2024 Mike Russler
Aphanes occidentalis
© 2022 Ron Vanderhoff
Aphanes occidentalis
© 2024 Mike Russler

Aphyllon tuberosum    Chaparral broomrape
native
Perennial herb (parasitic)

OROBANCHACEAE

Aphyllon tuberosum
© 2022 Hunter Breck
Aphyllon tuberosum
© 2019 David Greenberger
Aphyllon tuberosum
© 2022 R.A. Chasey

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

ARALIACEAE

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

Arbutus menziesii    Madrono,  Pacific madrone
native
Tree

ERICACEAE

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

native
Shrub

ERICACEAE

Arctostaphylos glandulosa ssp. cushingiana
© 2019 Susan McDougall
Arctostaphylos glandulosa ssp. cushingiana
© 2016 Dana York
Arctostaphylos glandulosa ssp. cushingiana
© 2016 Dana York

Arctostaphylos glauca    Big berry manzanita,  Bigberry manzanita
native
Tree, Shrub

ERICACEAE

Arctostaphylos glauca
© 2020 Ron Vanderhoff
Arctostaphylos glauca
© 2018 Ron Vanderhoff
Arctostaphylos glauca
© 2018 Ron Vanderhoff

Arctostaphylos luciana    Santa lucia manzanita
rare native
Shrub

ERICACEAE

Arctostaphylos luciana
© 2020 Mike Russler
Arctostaphylos luciana
© 2020 Mike Russler
Arctostaphylos luciana
© 2006 Steve Matson

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

ASTERACEAE

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

Artemisia douglasiana    California mugwort,  Douglas' sagewort
native
Perennial herb

ASTERACEAE

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

Asclepias eriocarpa    Indian milkweed,  Kotolo milkweed,  Woolypod milkweed
native
Perennial herb

APOCYNACEAE

Asclepias eriocarpa
© 2023 Ron Vanderhoff
Asclepias eriocarpa
© 2014 Dan Cohn
Asclepias eriocarpa
© 2019 Ron Vanderhoff

Asclepias fascicularis    Narrow leaf milkweed
native
Perennial herb

APOCYNACEAE

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

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

POACEAE

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

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

POACEAE

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

Baccharis pilularis    Coyote brush,  Dwarf chaparral broom
native
Shrub

ASTERACEAE

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

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

BRASSICACEAE

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

Brachypodium hybridum    Small Tree-Mallow


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

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

POACEAE

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

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

POACEAE

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

Bromus grandis    Tall brome
native
Perennial grass

POACEAE

Bromus grandis
© 2019 Ron Vanderhoff
Bromus grandis
© 2021 Arlee Montalvo
Bromus grandis
© 2019 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 madritensis    Foxtail chess, foxtail brome,  Madrid brome,  Spanish brome
non-native
Annual grass

POACEAE

Bromus madritensis
© 2022 Steve Matson
Bromus madritensis
© 2023 Stephen H Siemsen
Bromus madritensis
© 2015 Chris Jaster

Bromus pseudolaevipes    Coast range brome,  Southern chinook brome
native
Perennial grass

POACEAE

Bromus pseudolaevipes
© 2019 Ron Vanderhoff
Bromus pseudolaevipes
© 2019 Ron Vanderhoff
Bromus pseudolaevipes
© 2019 Ron Vanderhoff

Bromus rubens    Red brome
invasive non-native
Annual grass

POACEAE

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

Calandrinia breweri    Brewer's calandrinia
rare native
Annual herb

MONTIACEAE

Calandrinia breweri
© 2019 Ron Vanderhoff
Calandrinia breweri
© 2019 Ron Vanderhoff
Calandrinia breweri
© 2014 Ron Vanderhoff

Calandrinia menziesii    red maids,  Calandrinia
native
Annual herb

MONTIACEAE

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

Calochortus albus    White fairy lantern,  White globe lily
native
Perennial herb

LILIACEAE

Calochortus albus
© 2019 David Greenberger
Calochortus albus
© 2019 Cynthia Powell
Calochortus albus
© 2016 Steve Matson

Calystegia macrostegia ssp. cyclostegia    Coast morning glory,  Island false bindweed
native
Perennial herb, Vine

CONVOLVULACEAE

Calystegia macrostegia ssp. cyclostegia
© 2017 Michael Mitchell
Calystegia macrostegia ssp. cyclostegia
© 2020 James Gonsman
Calystegia macrostegia ssp. cyclostegia
© 2017 Michael Mitchell

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

CONVOLVULACEAE

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

Camissoniopsis hirtella    Hairy sun cup
native
Annual herb

ONAGRACEAE

Camissoniopsis hirtella
© 2019 Steve Matson
Camissoniopsis hirtella
© 2019 Steve Matson
Camissoniopsis hirtella
© 2019 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

Carduus pycnocephalus    Italian thistle
invasive non-native
Annual herb

ASTERACEAE

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

Carex globosa    Round fruit sedge
native
Perennial grasslike herb

CYPERACEAE

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

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

native
Shrub

RHAMNACEAE

Ceanothus oliganthus var. sorediatus
© 2022 R.A. Chasey
Ceanothus oliganthus var. sorediatus
© 2017 Steve Matson
Ceanothus oliganthus var. sorediatus
© 2019 Susan McDougall

Ceanothus papillosus    warty-leaf ceanothus,  Wartleaf ceanothus
native
Shrub

RHAMNACEAE

Ceanothus papillosus
© 2022 Justin Luong
Ceanothus papillosus
© 2024 Mary Gerbic
Ceanothus papillosus
© 2021 Mary Conway

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

ASTERACEAE

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

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

ASTERACEAE

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

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

Chondrilla juncea    Hogbite,  Skeleton weed
invasive non-native
Perennial herb

ASTERACEAE

Chondrilla juncea
© 2021 George Williams
Chondrilla juncea
© 2024 Mike Russler
Chondrilla juncea
© 2021 Bob Sweatt

Chorizanthe staticoides    Turkish rugging
native
Annual herb

POLYGONACEAE

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

Cirsium occidentale var. lucianum    Cuesta ridge thistle
rare native
Perennial herb

ASTERACEAE

Cirsium occidentale var. lucianum
© 2019 David Greenberger
Cirsium occidentale var. lucianum
© 2021 David Krause
Cirsium occidentale var. lucianum
© 2021 David Krause

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

ONAGRACEAE

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

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

ONAGRACEAE

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

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

MONTIACEAE

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

Claytonia perfoliata ssp. mexicana    Southern miner's lettuce
native
Annual herb

MONTIACEAE

Claytonia perfoliata ssp. mexicana
© 2021 John Rawlings
Claytonia perfoliata ssp. mexicana
© 2002 Dean Wm. Taylor
Claytonia perfoliata ssp. mexicana
© 2014 Susan McDougall

Claytonia perfoliata ssp. perfoliata    Claytonia,  Miner's lettuce
native
Annual herb

MONTIACEAE

Claytonia perfoliata ssp. perfoliata
© 2008 Steve Matson
Claytonia perfoliata ssp. perfoliata
© 2008 Steve Matson
Claytonia perfoliata ssp. perfoliata
© 2008 Steve Matson

Clematis lasiantha    Chaparral clematis,  Pipestem
native
Perennial herb, Vine

RANUNCULACEAE

Clematis lasiantha
© 2008 Steve Matson
Clematis lasiantha
© 2018 Steve Matson
Clematis lasiantha
© 2024 Dana York

Collinsia heterophylla    Purple chinese houses
native
Annual herb

PLANTAGINACEAE

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

Conium maculatum    Poison hemlock
invasive non-native
Perennial herb

APIACEAE

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

Corethrogyne filaginifolia    Common sandaster
native
Perennial herb

ASTERACEAE

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

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

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

CRASSULACEAE

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

Crocanthemum scoparium    peak rush-rose,  broom rush-rose
native
Shrub

CISTACEAE

Crocanthemum scoparium
© 2020 Stacie Wolny
Crocanthemum scoparium
© 2020 Stacie Wolny
Crocanthemum scoparium
© 2020 Stacie Wolny

Croton setiger    Turkey-mullein
native
Annual herb

EUPHORBIACEAE

Croton setiger
© 2011 Steve Matson
Croton setiger
© 2011 Steve Matson
Croton setiger
© 2014 Richard Chasey

Cryptantha clevelandii var. florosa    Coastal cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha clevelandii var. florosa
© 2020 David Greenberger
Cryptantha clevelandii var. florosa
© 2024 Ron Vanderhoff
Cryptantha clevelandii var. florosa
© 2023 Ken-ichi Ueda

Cryptantha corollata    Coast range cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha corollata
© 2022 Helen Hancock
Cryptantha corollata
© 2022 Helen Hancock
Cryptantha corollata
© 2022 Helen Hancock

Cryptantha intermedia var. intermedia    Common cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha intermedia var. intermedia
© 2019 Ron Vanderhoff
Cryptantha intermedia var. intermedia
© 2021 Ron Vanderhoff
Cryptantha intermedia var. intermedia
© 2023 Ron Vanderhoff

Cryptantha muricata var. jonesii    Jones' cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha muricata var. jonesii
© 2019 Ron Vanderhoff
Cryptantha muricata var. jonesii
© 2019 Ron Vanderhoff
Cryptantha muricata var. jonesii
© 2019 Ron Vanderhoff

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

CONVOLVULACEAE

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

Cuscuta subinclusa    Canyon dodder
native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta subinclusa
© 2018 Ron Vanderhoff
Cuscuta subinclusa
© 2020 Ron Vanderhoff
Cuscuta subinclusa
© 2018 Ron Vanderhoff

Cyperus eragrostis    Tall cyperus,  Tall flatsedge
native
Perennial grasslike herb

CYPERACEAE

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

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

POACEAE

Dactylis glomerata
© 2003 Steve Matson
Dactylis glomerata
© 2003 Steve Matson
Dactylis glomerata
© 2003 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

Dendromecon rigida    Bush poppy,  Tree poppy
native
Shrub

PAPAVERACEAE

Dendromecon rigida
© 2019 Eliezer Margolis
Dendromecon rigida
© 2010 Suzanne L. Weakley
Dendromecon rigida
© 2018 Hunter Breck

Diplacus aurantiacus var. aurantiacus    Orange Bush Monkeyflower
native
Shrub

PHRYMACEAE

Diplacus aurantiacus var. aurantiacus
© 2024 Steve Conger
Diplacus aurantiacus var. aurantiacus
© 2024 Steve Conger
Diplacus aurantiacus var. aurantiacus
© 2019 Gary McDonald

Diplacus aurantiacus var. longiflorus    Orange Bush Monkeyflower
native
Shrub

PHRYMACEAE

Diplacus aurantiacus var. longiflorus
© 2024 Steve Conger
Diplacus aurantiacus var. longiflorus
© 2024 Steve Conger
Diplacus aurantiacus var. longiflorus
© 2019 Gary McDonald

Diplacus rattanii    Rattan's monkeyflower
native
Annual herb

PHRYMACEAE

Diplacus rattanii
© 2019 Ron Vanderhoff
Diplacus rattanii
© 2019 Ron Vanderhoff
Diplacus rattanii
© 2019 Ron Vanderhoff

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

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

Elymus condensatus    Giant wild rye
native
Perennial grass

POACEAE

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

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

POACEAE

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

Emmenanthe penduliflora var. penduliflora    Whispering bells,  Whisperingbells
native
Annual herb

HYDROPHYLLACEAE

Emmenanthe penduliflora var. penduliflora
© 2014 Steve Matson
Emmenanthe penduliflora var. penduliflora
© 2014 Steve Matson
Emmenanthe penduliflora var. penduliflora
© 2010 Steve Matson

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 canum ssp. canum    California fuchsia,  Hummingbird trumpet
native
Perennial herb

ONAGRACEAE

Epilobium canum ssp. canum
© 2023 Ron Vanderhoff
Epilobium canum ssp. canum
© 2024 R.A. Chasey
Epilobium canum ssp. canum
© 2022 Ron Vanderhoff

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

ONAGRACEAE

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

Erigeron canadensis    Canada horseweed
native
Annual herb

ASTERACEAE

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

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

Eriodictyon traskiae ssp. smithii    Smith's yerba santa
native
Shrub

NAMACEAE

Eriodictyon traskiae ssp. smithii
© 2017 Keir Morse
Eriodictyon traskiae ssp. smithii
© 2002 Lynn Watson
Eriodictyon traskiae ssp. smithii
© 2002 Lynn Watson

Eriogonum elongatum var. elongatum    Long stemmed buckwheat
native
Perennial herb

POLYGONACEAE

Eriogonum elongatum var. elongatum
© 2017 Ron Vanderhoff
Eriogonum elongatum var. elongatum
© 2019 Aaron Echols
Eriogonum elongatum var. elongatum
© 2021 Mike Russler

Eriogonum fasciculatum var. foliolosum    California buckwheat,  Eastern mojave buckwheat,  Red topped buckwheat
native
Shrub

POLYGONACEAE

Eriogonum fasciculatum var. foliolosum
© 2016 Michael Mitchell
Eriogonum fasciculatum var. foliolosum
© 2015 Michael Mitchell
Eriogonum fasciculatum var. foliolosum
© 2015 Michael Mitchell

Eriogonum nudum var. pubiflorum    Hairy flowered buckwheat,  Naked buckwheat,  Fremont's Wild Buckwheat
native
Annual herb

POLYGONACEAE

Eriogonum nudum var. pubiflorum
© 2024 Mike Russler
Eriogonum nudum var. pubiflorum
© 2011 Steve Matson
Eriogonum nudum var. pubiflorum
© 2011 Steve Matson

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

ASTERACEAE

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

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

GERANIACEAE

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

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

GERANIACEAE

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

Erodium texanum    Desert heron's bill,  Texas filaree,  Texas stork's bill
native
Annual herb

GERANIACEAE

Erodium texanum
© 2010 Steve Matson
Erodium texanum
© 2019 Matt Berger
Erodium texanum
© 2010 Steve Matson

Erysimum capitatum var. capitatum    Sanddune wallflower
native
Perennial herb

BRASSICACEAE

Erysimum capitatum var. capitatum
© 2017 Steve Matson
Erysimum capitatum var. capitatum
© 2017 Steve Matson
Erysimum capitatum var. capitatum
© 2017 Steve Matson

Erythranthe cardinalis    Cardinal monkey flower
native
Perennial herb

PHRYMACEAE

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

native
Perennial

PHRYMACEAE

Erythranthe grandis
© 2020 David Greenberger
Erythranthe grandis
© 2022 Charles Russell
Erythranthe grandis
© 2022 Charles Russell

Erythranthe guttata    Seep monkey flower,  Yellow monkey flower
native
Annual, Perennial herb (rhizomatous)

PHRYMACEAE

Erythranthe guttata
© 2019 Stacie Wolny
Erythranthe guttata
© 2015 James Gonsman
Erythranthe guttata
© 2019 Stacie Wolny

Eschscholzia caespitosa    Foothill poppy,  Tufted eschscholzia,  Tufted poppy
native
Annual herb

PAPAVERACEAE

Eschscholzia caespitosa
© 2019 Ron Vanderhoff
Eschscholzia caespitosa
© 2024 Dana York
Eschscholzia caespitosa
© 2024 Dana York

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

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

HYDROPHYLLACEAE

Eucrypta chrysanthemifolia var. chrysanthemifolia
© 2014 Steve Matson
Eucrypta chrysanthemifolia var. chrysanthemifolia
© 2014 Steve Matson
Eucrypta chrysanthemifolia var. chrysanthemifolia
© 2014 Steve Matson

Festuca elmeri    Coast fescue,  Elmer fescue
native
Perennial grass

POACEAE

Festuca elmeri
© 2023 R.A. Chasey
Festuca elmeri
© 2022 John Rawlings
Festuca elmeri
© 2023 R.A. Chasey

Festuca microstachys    Small fescue
native
Annual grass

POACEAE

Festuca microstachys
© 2011 Steve Matson
Festuca microstachys
© 2024 Emily R. Allen
Festuca microstachys
© 2011 Steve Matson

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 octoflora    Sixweeks grass
native
Annual grass

POACEAE

Festuca octoflora
© 2023 R.A. Chasey
Festuca octoflora
© 2020 Sara Timby
Festuca octoflora
© 2018 Ken Hickman

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

POACEAE

Festuca perennis
© 2019 Ron Vanderhoff
Festuca perennis
© 2023 Ron Vanderhoff
Festuca perennis
© 2021 Ron Vanderhoff

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

Galium andrewsii    Needlemat galium,  Phlox leaved bedstraw,  Phloxleaf bedstraw
native
Perennial herb

RUBIACEAE

Galium andrewsii
© 2022 Mike Russler
Galium andrewsii
© 2019 Marisa Persaud
Galium andrewsii
© 2022 Mike Russler

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

RUBIACEAE

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

Galium californicum ssp. flaccidum    California bedstraw
native
Perennial herb

RUBIACEAE

Galium californicum ssp. flaccidum
© 2014 Steve Matson
Galium californicum ssp. flaccidum
© 2014 Steve Matson
Galium californicum ssp. flaccidum
© 2014 Steve Matson

Galium porrigens var. porrigens    Climbing bedstraw,  Graceful bedstraw,  Oval leaved bedstraw
native
Vine, Shrub

RUBIACEAE

Galium porrigens var. porrigens
© 2022 Ron Vanderhoff
Galium porrigens var. porrigens
© 2022 Ron Vanderhoff
Galium porrigens var. porrigens
© 2022 Julia Larke

Garrya veatchii    Canyon silktassel,  Southern silk tassel,  Veatch silktassel
native
Shrub

GARRYACEAE

Garrya veatchii
© 2023 Devon Christian
Garrya veatchii
© 2016 Ron Vanderhoff
Garrya veatchii
© 2020 Bryant Baker

Gastridium phleoides    Nit grass
non-native
Annual grass

POACEAE

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

Geranium rotundifolium    Round leaved geranium,  Roundleaf geranium
non-native
Annual herb

GERANIACEAE

Geranium rotundifolium
© 2024 Ron Vanderhoff
Geranium rotundifolium
© 2009 Dean Wm. Taylor
Geranium rotundifolium
© 2024 Ron Vanderhoff

native
Annual herb

POLEMONIACEAE

Gilia achilleifolia ssp. achilleifolia
© 2021 Helen Hancock
Gilia achilleifolia ssp. achilleifolia
© 2022 R.A. Chasey
Gilia achilleifolia ssp. achilleifolia
© 2021 Mary Conway

Gilia clivorum    Many stemmed gilia,  Purple spot gilia,  Purplespot gilia
native
Annual herb

POLEMONIACEAE

Gilia clivorum
© 2013 Gary McDonald
Gilia clivorum
© 2013 Gary McDonald
Gilia clivorum
© 2021 Helen Hancock

Gilia tenuiflora ssp. amplifaucalis    Greater yellowthroat gilia,  Spreading slender flowered gilia
rare native
Annual herb

POLEMONIACEAE


Grindelia hirsutula    Gumweed,  Hairy gumweed
native
Perennial herb

ASTERACEAE

Grindelia hirsutula
© 2021 R.A. Chasey
Grindelia hirsutula
© 2020 R.A. Chasey
Grindelia hirsutula
© 2015 Ken Lunders

Hazardia squarrosa var. squarrosa    Saw toothed goldenbush,  Sawtooth goldenbush
native
Shrub

ASTERACEAE

Hazardia squarrosa var. squarrosa
© 2021 Mike Russler
Hazardia squarrosa var. squarrosa
© 2021 Mary Conway
Hazardia squarrosa var. squarrosa
© 2021 Mary Conway

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

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

ASTERACEAE

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

Hesperocnide tenella    Western nettle,  Western stinging nettle,  Western stingingnettle
native
Annual herb

URTICACEAE

Hesperocnide tenella
© 2023 Ken-ichi Ueda
Hesperocnide tenella
© 2006 Steve Matson
Hesperocnide tenella
© 2020 Ken Hickman

Heterotheca grandiflora    Telegraph weed,  Telegraphweed
native
Annual, Perennial herb

ASTERACEAE

Heterotheca grandiflora
© 2021 Mike Russler
Heterotheca grandiflora
© 2021 Mike Russler
Heterotheca grandiflora
© 2021 Mike Russler

Hieracium argutum    Southern hawkweed
native
Perennial herb

ASTERACEAE

Hieracium argutum
© 2015 Justin Luong
Hieracium argutum
© 2015 Justin Luong
Hieracium argutum
© 2020 David Greenberger

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

BRASSICACEAE

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

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

Hosackia crassifolia var. otayensis    Otay mountain hosackia
rare native
Perennial herb

FABACEAE

Hosackia crassifolia var. otayensis
© 2022 Becky Escalante
Hosackia crassifolia var. otayensis
© 2022 Becky Escalante
Hosackia crassifolia var. otayensis
© 2022 Becky Escalante

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

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

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

PLANTAGINACEAE

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

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

ASTERACEAE

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

Lagophylla ramosissima    Branched lagophylla,  Common hareleaf
native
Annual herb

ASTERACEAE

Lagophylla ramosissima
© 2024 Mike Russler
Lagophylla ramosissima
© 2021 Dee Shea Himes
Lagophylla ramosissima
© 2022 Mike Russler

Lamarckia aurea    Goldentop grass
non-native
Annual grass

POACEAE

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

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

native
Perennial herb

LILIACEAE

Lilium pardalinum ssp. pardalinum
© 2015 Steve Matson
Lilium pardalinum ssp. pardalinum
© 2015 Steve Matson
Lilium pardalinum ssp. pardalinum
© 2015 Steve Matson

Lithophragma heterophyllum    Hill star,  Hillside woodland star
native
Perennial herb

SAXIFRAGACEAE

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

Logfia filaginoides    California cottonrose
native
Annual herb

ASTERACEAE

Logfia filaginoides
© 2019 Steve Matson
Logfia filaginoides
© 2019 Steve Matson
Logfia filaginoides
© 2019 Steve Matson

Logfia gallica    Narrowleaf cottonrose
non-native
Annual herb

ASTERACEAE

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

Lonicera hispidula    Pink honeysuckle
native
Vine, Shrub

CAPRIFOLIACEAE

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

Lupinus albifrons var. abramsii    Abrams' lupine
rare native
Perennial herb

FABACEAE

Lupinus albifrons var. abramsii
© 2018 Michael Mitchell
Lupinus albifrons var. abramsii
© 2018 Michael Mitchell
Lupinus albifrons var. abramsii
© 2018 Michael Mitchell

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 cervinus    Santa lucia lupine
rare native
Perennial herb

FABACEAE

Lupinus cervinus
© 2019 Scott Yarger
Lupinus cervinus
© 2019 Scott Yarger
Lupinus cervinus
© Beatrice F. Howitt 1999 California Academy of Sciences

Lupinus concinnus    Bajada lupine,  Elegant lupine,  Scarlet lupine
native
Annual herb

FABACEAE

Lupinus concinnus
© 2022 Ron Vanderhoff
Lupinus concinnus
© 2019 Ron Vanderhoff
Lupinus concinnus
© 2017 B.J. Dion

Lupinus hirsutissimus    Stinging annual lupine,  Stinging lupine
native
Annual herb

FABACEAE

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

Lupinus succulentus    Arroyo lupine,  Hollowleaf annual lupine,  Succulent lupine
native
Annual herb

FABACEAE

Lupinus succulentus
© 2023 Andy Ford
Lupinus succulentus
© 2018 Stacie Wolny
Lupinus succulentus
© 2018 Stacie Wolny

Lupinus truncatus    Blunt leaved lupine,  Collared annual lupine,  Truncate leaf lupine
native
Annual herb

FABACEAE

Lupinus truncatus
© 2023 Caitlin Kreutz
Lupinus truncatus
© 2023 Connor O'Hara-Baker
Lupinus truncatus
© 2010 Michael Mitchell

Lysimachia arvensis    Scarlet pimpernel
non-native
Annual herb

MYRSINACEAE

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

Lysimachia latifolia    Pacific starflower
native
Perennial herb

MYRSINACEAE

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

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

ASTERACEAE

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

Madia 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

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

ASTERACEAE

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

Malacothrix phaeocarpa    Central coast malacothrix,  Davis' desertdandelion
rare native
Annual herb

ASTERACEAE

Malacothrix phaeocarpa
© 2019 Adonis Tate
Malacothrix phaeocarpa
© 2019 Adonis (Don) Tate
Malacothrix phaeocarpa
© 2019 Adonis (Don) Tate

Marah fabacea    California man-root
native
Perennial herb, Vine

CUCURBITACEAE

Marah fabacea
© 2018 Gary McDonald
Marah fabacea
© 2018 MCOSD EDRR
Marah fabacea
© 2021 Cyril Guyot

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

FABACEAE

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

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

POACEAE

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

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

FABACEAE

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

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

FABACEAE

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

Mentzelia micrantha    Chaparral blazing star,  San Luis blazingstar,  San Luis stick leaf
native
Annual herb

LOASACEAE

Mentzelia micrantha
© 2019 Ron Vanderhoff
Mentzelia micrantha
© 2023 Keir Morse
Mentzelia micrantha
© 2019 Hailey Laskey

Microsteris gracilis    Slender phlox
native
Annual herb

POLEMONIACEAE

Microsteris gracilis
© 2003 Steve Matson
Microsteris gracilis
© 2016 Steve Matson
Microsteris gracilis
© 2003 Steve Matson

Monardella villosa ssp. obispoensis    San luis obispo coyote mint
native
Perennial herb

LAMIACEAE

Monardella villosa ssp. obispoensis
© 2019 David Wolfson
Monardella villosa ssp. obispoensis
© 2019 David Wolfson
Monardella villosa ssp. obispoensis
© 2020 Dee Shea Himes

Nemophila menziesii    Baby blue eyes
native
Annual herb

HYDROPHYLLACEAE

Nemophila menziesii
© 2019 Matt Berger
Nemophila menziesii
© 2019 Diane Etchison
Nemophila menziesii
© 2019 Ron Vanderhoff

native
Tree, Shrub

FAGACEAE

Notholithocarpus densiflorus var. densiflorus
© 2020 R.A. Chasey
Notholithocarpus densiflorus var. densiflorus
© 2022 David popp
Notholithocarpus densiflorus var. densiflorus
© 2020 Susan McDougall

Osmorhiza berteroi    Sweet cicely
native
Perennial herb

APIACEAE

Osmorhiza berteroi
© 2006 Steve Matson
Osmorhiza berteroi
© 2006 Steve Matson
Osmorhiza berteroi
© 2006 Steve Matson

Osmorhiza brachypoda    California sweet cicely,  California sweetcicely
native
Perennial herb

APIACEAE

Osmorhiza brachypoda
© 2017 Aaron Echols
Osmorhiza brachypoda
© 2020 Ron Vanderhoff
Osmorhiza brachypoda
© 2022 Ron Vanderhoff

Paeonia californica    California peony
native
Perennial herb

PAEONIACEAE

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

Papaver californicum    Fire poppy,  Western poppy
native
Annual herb

PAPAVERACEAE

Papaver californicum
© 2014 Ron Vanderhoff
Papaver californicum
© 2015 Ron Vanderhoff
Papaver californicum
© 2020 Bryant Baker

Pedicularis densiflora    Warrior's plume,  Indian warrior
native
Perennial herb

OROBANCHACEAE

Pedicularis densiflora
© 2015 Dee Warenycia
Pedicularis densiflora
© 2019 Jason Mills
Pedicularis densiflora
© 2017 Joshua Borkowski

Pellaea andromedifolia    Coffee cliffbrake,  Coffee fern
native
Fern

PTERIDACEAE

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

native
Fern

PTERIDACEAE

Pentagramma triangularis ssp. triangularis
© 2008 Steve Matson
Pentagramma triangularis ssp. triangularis
© 2008 Steve Matson
Pentagramma triangularis ssp. triangularis
© 2019 Gary McDonald

Phacelia cicutaria var. hispida    Caterpillar phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia cicutaria var. hispida
© 2017 Steve Matson
Phacelia cicutaria var. hispida
© 2017 Steve Matson
Phacelia cicutaria var. hispida
© 2017 Steve Matson

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

HYDROPHYLLACEAE

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

Phacelia grisea    Grey phacelia,  Santa lucia phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia grisea
© 2022 Irene Rosen
Phacelia grisea
© 2022 Irene Rosen
Phacelia grisea
© 2022 Irene Rosen

Phacelia imbricata ssp. imbricata    Imbricate Phacelia
native
Annual herb

HYDROPHYLLACEAE

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

Phacelia viscida var. viscida    Sticky phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia viscida var. viscida
© 2024 Mike Russler
Phacelia viscida var. viscida
© 2024 Mike Russler
Phacelia viscida var. viscida
© 2024 Mike Russler

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

POACEAE

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

Pholistoma auritum var. auritum    Blue fiesta flower,  Blue fiestaflower,  Fiesta flower
native
Annual herb

HYDROPHYLLACEAE

Pholistoma auritum var. auritum
© 2014 Steve Matson
Pholistoma auritum var. auritum
© 2014 Steve Matson
Pholistoma auritum var. auritum
© 2014 Steve Matson

native
Shrub (parasitic)

VISCACEAE

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

Pickeringia montana var. montana    Montana chaparral pea
native
Shrub

FABACEAE

Pickeringia montana var. montana
© 2022 Ron Vanderhoff
Pickeringia montana var. montana
© 2022 Ron Vanderhoff
Pickeringia montana var. montana
© 2022 Ron Vanderhoff

Pinus attenuata    Knobcone pine,  Scrub pine
native
Tree

PINACEAE

Pinus attenuata
© 2009 Ron Vanderhoff
Pinus attenuata
© 2018 Hayley Ross
Pinus attenuata
© 2019 Cynthia Powell

Pinus coulteri    Big cone pine,  Bull pine,  Coulter pine
native
Tree

PINACEAE

Pinus coulteri
© 2015 Michelle Cloud Hughes
Pinus coulteri
© 2019 Bryant Baker
Pinus coulteri
© 2020 Diane Etchison

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

PINACEAE

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

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

BORAGINACEAE

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

Platanus racemosa    California sycamore,  Western sycamore
native
Tree

PLATANACEAE

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

Platystemon californicus    Cream cups,  Creamcups
native
Annual herb

PAPAVERACEAE

Platystemon californicus
© 2017 Nathanial Wigington
Platystemon californicus
© 2022 John L. Thompson
Platystemon californicus
© 2022 John L. Thompson

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

POACEAE

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

Poa bulbosa ssp. vivipara    Bulbous blue grass
non-native
Perennial grass

POACEAE

Poa bulbosa ssp. vivipara
© 2024 R.A. Chasey
Poa bulbosa ssp. vivipara
© 2024 Bruce Homer-Smith
Poa bulbosa ssp. vivipara
© 2022 John Rawlings

Poa howellii    Howell's blue grass,  Howell's bluegrass
native
Annual grass

POACEAE

Poa howellii
© 2024 R.A. Chasey
Poa howellii
© 2020 Ken Hickman
Poa howellii
© 2024 R.A. Chasey

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

POACEAE

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

Polygonum aviculare    Prostrate knotweed
non-native
Annual, Perennial herb

POLYGONACEAE

Polygonum aviculare
© 2023 Ron Vanderhoff
Polygonum aviculare
© 2023 Cynthia Powell
Polygonum aviculare
© 2021 Ron Vanderhoff

Polypodium californicum    California polypody
native
Fern

POLYPODIACEAE

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

Polypodium calirhiza    Acrid fern,  Licorice fern,  Nested polypody
native
Fern

POLYPODIACEAE

Polypodium calirhiza
© 2022 BOB CASE
Polypodium calirhiza
© 2015 James Gonsman
Polypodium calirhiza
© 2020 Susan McDougall

Polystichum imbricans ssp. curtum    Cliff sword fern,  Narrowleaf swordfern
native
Fern

DRYOPTERIDACEAE

Polystichum imbricans ssp. curtum
© 2015 Robert Barnard
Polystichum imbricans ssp. curtum
© 2016 Keir Morse
Polystichum imbricans ssp. curtum
© 2016 Cynthia Powell

Populus trichocarpa    Black cottonwood
native
Tree

SALICACEAE

Populus trichocarpa
© 2019 Ron Vanderhoff
Populus trichocarpa
© 2012 Steve Matson
Populus trichocarpa
© 2012 Steve Matson

Prunus emarginata    Bitter cherry
native
Tree, Shrub

ROSACEAE

Prunus emarginata
© 2020 Belinda Lo
Prunus emarginata
© 2004 Steve Matson
Prunus emarginata
© 2006 Steve Matson

Prunus ilicifolia var. ilicifolia    Holly leaf cherry,  Hollyleaf cherry
native
Tree, Shrub

ROSACEAE

Prunus ilicifolia var. ilicifolia
© 2023 Helen Hancock
Prunus ilicifolia var. ilicifolia
© 2024 Mike Russler
Prunus ilicifolia var. ilicifolia
© 2022 Ron Vanderhoff

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

ROSACEAE

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

native
Perennial herb

ASTERACEAE

Pseudognaphalium beneolens
© 2021 BLM Redding Field Office
Pseudognaphalium beneolens
© 2021 Mike Russler
Pseudognaphalium beneolens
© 2021 R.A. Chasey

Pseudognaphalium californicum    Ladies' tobacco
native
Annual, Perennial herb

ASTERACEAE

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

Pseudognaphalium luteoalbum    Jersey cudweed
non-native
Annual herb

ASTERACEAE

Pseudognaphalium luteoalbum
© 2021 Ron Vanderhoff
Pseudognaphalium luteoalbum
© 2019 Diane Etchison
Pseudognaphalium luteoalbum
© 2021 Ron Vanderhoff

Pseudognaphalium microcephalum    Wright's cudweed
native
Perennial herb

ASTERACEAE

Pseudognaphalium microcephalum
© 2020 Ron Vanderhoff
Pseudognaphalium microcephalum
© 2022 David Strauch
Pseudognaphalium microcephalum
© 2019 Ron Vanderhoff

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

DENNSTAEDTIACEAE

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

Pterostegia drymarioides    Fairy mist,  Woodland threadstem
native
Annual herb

POLYGONACEAE

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

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

FAGACEAE

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

Quercus berberidifolia    Inland scrub oak
native
Tree

FAGACEAE

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

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

FAGACEAE

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

Quercus durata var. durata    Leather oak
native
Shrub

FAGACEAE

Quercus durata var. durata
© 2022 Hunter Breck
Quercus durata var. durata
© 2020 Charles Russell
Quercus durata var. durata
© 2020 R.A. Chasey

Quercus wislizeni var. frutescens    Bush interior live oak,  Chaparral oak,  Live oak
native
Tree, Shrub

FAGACEAE

Quercus wislizeni var. frutescens
© 2019 Ron Vanderhoff
Quercus wislizeni var. frutescens
© 2019 Ron Vanderhoff
Quercus wislizeni var. frutescens
© 2021 Ron Vanderhoff

Rafinesquia californica    California chicory,  California plumseed
native
Annual herb

ASTERACEAE

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

Ranunculus hebecarpus    Delicate buttercup,  Pubescent fruited buttercup,  Slender annual buttercup
native
Annual herb

RANUNCULACEAE

Ranunculus hebecarpus
© 2019 Ron Vanderhoff
Ranunculus hebecarpus
© 2021 Ron Vanderhoff
Ranunculus hebecarpus
© 2019 Ron Vanderhoff

Rhamnus ilicifolia    Evergreen buckthorn,  Hollyleaf redberry
native
Shrub

RHAMNACEAE

Rhamnus ilicifolia
© 2016 Steve Matson
Rhamnus ilicifolia
© 2016 Steve Matson
Rhamnus ilicifolia
© 2006 Steve Matson

Rhus aromatica    Fragrant sumac,  Skunk Bush
native
Shrub

ANACARDIACEAE

Rhus aromatica
© 2018 Steve Matson
Rhus aromatica
© 2018 Steve Matson
Rhus aromatica
© 2018 Steve Matson

Ribes amarum    Bitter gooseberry
native
Shrub

GROSSULARIACEAE

Ribes amarum
© 2021 Keir Morse
Ribes amarum
© 2019 Ron Vanderhoff
Ribes amarum
© 2021 David popp

Ribes malvaceum var. malvaceum    Chaparral currant
native
Shrub

GROSSULARIACEAE

Ribes malvaceum var. malvaceum
© 2023 R.A. Chasey
Ribes malvaceum var. malvaceum
© 2020 Ron Vanderhoff
Ribes malvaceum var. malvaceum
© 2023 R.A. Chasey

Ribes sanguineum var. glutinosum    Blood currant,  Flowering currant,  Pink flowering currant
native
Shrub

GROSSULARIACEAE

Ribes sanguineum var. glutinosum
© 2023 Dana York
Ribes sanguineum var. glutinosum
© 2018 John Rusk
Ribes sanguineum var. glutinosum
© 2018 Hunter Breck

Ribes speciosum    Fuchsia flowered gooseberry,  Fuchsiaflower gooseberry
native
Shrub

GROSSULARIACEAE

Ribes speciosum
© 2022 David Chipping
Ribes speciosum
© 2024 Shelly Marshall
Ribes speciosum
© 2021 Ron Vanderhoff

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

BRASSICACEAE

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

Rosa gymnocarpa    Dwarf rose,  Baldhip rose
native
Shrub

ROSACEAE

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

Rosa spithamea    Ground rose,  Sonoma rose
native
Shrub

ROSACEAE

Rosa spithamea
© 2021 David Gowen
Rosa spithamea
© 1973 Geoff Burleigh
Rosa spithamea
© 2020 David Krause

Rubus ursinus    California blackberry,  Pacific blackberry
native
Vine, Shrub

ROSACEAE

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

Rumex pulcher    Fiddle dock
non-native
Perennial herb

POLYGONACEAE

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

Salix laevigata    Polished willow,  Red willow
native
Tree

SALICACEAE

Salix laevigata
© 2017 Steve Matson
Salix laevigata
© 2017 Steve Matson
Salix laevigata
© 2017 Steve Matson

Salix lasiolepis    Arroyo willow
native
Tree, Shrub

SALICACEAE

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

Salvia apiana    White sage
native
Shrub

LAMIACEAE

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

Salvia columbariae    Chia sage
native
Annual herb

LAMIACEAE

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

Salvia mellifera    Black sage
native
Shrub

LAMIACEAE

Salvia mellifera
© 2017 Steve Matson
Salvia mellifera
© 2022 Suzanne L. Weakley
Salvia mellifera
© 2019 Diane Etchison

Sambucus nigra ssp. caerulea    Blue elderberry
native
Tree, Shrub

VIBURNACEAE

Sambucus nigra ssp. caerulea
© 2021 Mike Russler
Sambucus nigra ssp. caerulea
© 2020 Diane Etchison
Sambucus nigra ssp. caerulea
© 2022 El Byrne

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

APIACEAE

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

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

SCROPHULARIACEAE

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

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

SCROPHULARIACEAE

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

Scutellaria tuberosa    Danny's skullcap,  Scullcap
native
Perennial herb

LAMIACEAE

Scutellaria tuberosa
© 2006 Steve Matson
Scutellaria tuberosa
© 2006 Steve Matson
Scutellaria tuberosa
© 2006 Steve Matson

Senecio flaccidus var. douglasii    Bush groundsel,  Bush senecio,  Douglas' groundsel
native
Shrub

ASTERACEAE

Senecio flaccidus var. douglasii
© 2018 Richard Spjut
Senecio flaccidus var. douglasii
© 2019 Ron Vanderhoff
Senecio flaccidus var. douglasii
© 2023 Helen Hancock

Silene multinervia    Fire following campion
non-native
Annual herb

CARYOPHYLLACEAE

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

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

ASTERACEAE

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

Sisymbrium officinale    Hedge mustard,  Hedgemustard
non-native
Annual herb

BRASSICACEAE

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

Solanum douglasii    Douglas' nightshade,  Greenspot nightshade
native
Perennial herb

SOLANACEAE

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

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

ASTERACEAE

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

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

ASTERACEAE

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

Sorghum halepense    Johnsongrass
invasive non-native
Perennial grass

POACEAE

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

Spergula arvensis    Corn spurry
non-native
Annual herb

CARYOPHYLLACEAE

Spergula arvensis
© 2019 Diane Etchison
Spergula arvensis
© 2020 Mary Conway
Spergula arvensis
© 2022 Cynthia Powell

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

CARYOPHYLLACEAE

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

Stachys bullata    California hedge nettle,  California hedgenettle,  Southern hedge nettle
native
Perennial herb

LAMIACEAE

Stachys bullata
© 2014 Steve Matson
Stachys bullata
© 2014 Steve Matson
Stachys bullata
© 2014 Steve Matson

Stachys pycnantha    Short spike hedge nettle,  Shortspike hedgenettle
native
Perennial herb

LAMIACEAE

Stachys pycnantha
© 2023 David Wolfson
Stachys pycnantha
© 2019 David Wolfson
Stachys pycnantha
© 2021 Dan Quinn

Stephanomeria elata    Annual mitra,  Santa barbara stephanomeria,  Santa barbara wirelettuce
native
Annual herb

ASTERACEAE

Stephanomeria elata
© 2019 David Greenberger
Stephanomeria elata
© 2018 Julian Geoghegan
Stephanomeria elata
© 2021 Helen Hancock

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

ASTERACEAE

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

Stipa lepida    Foothill needle grass
native
Perennial grass

POACEAE

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

Stipa miliacea var. miliacea    Smilo grass
invasive non-native
Perennial grass

POACEAE

Stipa miliacea var. miliacea
© 2022 Donald Burk
Stipa miliacea var. miliacea
© 2022 Ron Vanderhoff
Stipa miliacea var. miliacea
© 2022 Donald Burk

Streptanthus lasiophyllus    Small Tree-Mallow


Symphoricarpos mollis    Creeping snowberry,  Trailing snowberry
native
Shrub

CAPRIFOLIACEAE

Symphoricarpos mollis
© 2022 Dana York
Symphoricarpos mollis
© 2020 Cara Wilcox
Symphoricarpos mollis
© 2019 Ron Vanderhoff

Tauschia hartwegii    Hartweg's tauschia,  Hartweg's umbrellawort,  Tauschia
native
Perennial herb

APIACEAE

Tauschia hartwegii
© 2006 Steve Matson
Tauschia hartwegii
© 2006 Steve Matson
Tauschia hartwegii
© 2006 Steve Matson

Thalictrum fendleri var. polycarpum    Fendler's meadow rue,  Meadow rue,  Torrey's meadow rue
native
Perennial herb

RANUNCULACEAE

Thalictrum fendleri var. polycarpum
© 2017 Thomas Reyes
Thalictrum fendleri var. polycarpum
© 2019 Patrick Furtado
Thalictrum fendleri var. polycarpum
© 2020 Diane Etchison

native
Annual herb

BRASSICACEAE

Thysanocarpus curvipes ssp. curvipes
© 2016 Steve Matson
Thysanocarpus curvipes ssp. curvipes
© 2016 Steve Matson
Thysanocarpus curvipes ssp. curvipes
© 2016 Steve Matson

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

APIACEAE

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

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

ANACARDIACEAE

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

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

MELANTHIACEAE

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

Trichostema lanatum    Woolly bluecurls
native
Shrub

LAMIACEAE

Trichostema lanatum
© 2022 Mike Russler
Trichostema lanatum
© 2019 Diane Etchison
Trichostema lanatum
© 2022 Mike Russler

Trifolium ciliolatum    Foothill clover,  Tree clover
native
Annual herb

FABACEAE

Trifolium ciliolatum
© 2005 Steve Matson
Trifolium ciliolatum
© 2005 Steve Matson
Trifolium ciliolatum
© 2005 Steve Matson

Trifolium hirtum    Rose clover
invasive non-native
Annual herb

FABACEAE

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

Trifolium microcephalum    Hairy clover,  Small headed clover
native
Annual herb

FABACEAE

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

Trifolium willdenovii    Tomcat clover
native
Annual herb

FABACEAE

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

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

TYPHACEAE

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

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

LAURACEAE

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

Uropappus lindleyi    Silver puffs,  Uropappus
native
Annual herb

ASTERACEAE

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

Verbena lasiostachys var. lasiostachys    Vervain,  Western vervain
native
Perennial herb

VERBENACEAE

Verbena lasiostachys var. lasiostachys
© 2010 Steve Matson
Verbena lasiostachys var. lasiostachys
© 2010 Steve Matson
Verbena lasiostachys var. lasiostachys
© 2010 Steve Matson

Vicia hassei    Hasse's vetch
native
Vine

FABACEAE

Vicia hassei
© 2023 R.A. Chasey
Vicia hassei
© 2016 Phil Johnson
Vicia hassei
© 2023 R.A. Chasey

Viola pedunculata    California golden violet,  Johnny jump up
native
Perennial herb

VIOLACEAE

Viola pedunculata
© 2014 Steve Matson
Viola pedunculata
© 2014 Steve Matson
Viola pedunculata
© 2014 Steve Matson

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

BLECHNACEAE

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