logo Calflora  Illustrated Plant List 
Poly and Horse Canyons
Poly and Horse Canyons, Campus of California Polytechnic State University San Luis Obispo County, California

San Luis Obispo County

David Keil  / CNPS-SLO  (2019-06-07)

Record Detail Nearby Surveys What Grows Here?
397 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

Achyrachaena mollis    Blow-Wives
native
Annual herb

ASTERACEAE

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

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

native
Perennial herb

FABACEAE

Acmispon junceus var. junceus
© 2016 John Doyen
Acmispon junceus var. junceus
© 2016 John Doyen
Acmispon junceus var. junceus
© 2016 John Doyen

native
Annual herb

FABACEAE

Acmispon maritimus var. maritimus
© 2020 Ron Vanderhoff
Acmispon maritimus var. maritimus
© 2023 Ron Vanderhoff
Acmispon maritimus var. maritimus
© 2020 Ron Vanderhoff

Acmispon strigosus    Strigose lotus
native
Annual herb

FABACEAE

Acmispon strigosus
© 2016 Steve Matson
Acmispon strigosus
© 2009 Steve Matson
Acmispon strigosus
© 2016 Steve Matson

Acmispon wrangelianus    Wrangel lotus
native
Annual herb

FABACEAE

Acmispon wrangelianus
© 2016 Steve Matson
Acmispon wrangelianus
© 2016 Steve Matson
Acmispon wrangelianus
© 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

Adelinia grandis    Hound's tongue,  Western houndstongue,  Adelinia
native
Perennial herb

BORAGINACEAE

Adelinia grandis
© 2022 David Strauch
Adelinia grandis
© 2007 Steve Matson
Adelinia grandis
© 2021 Dee Shea Himes

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 jordanii    Adiantum,  maiden hair fern
native
Fern

PTERIDACEAE

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

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

SAPINDACEAE

Aesculus californica
© 2011 Steve Matson
Aesculus californica
© 2011 Steve Matson
Aesculus californica
© 2019 Verna Jigour

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

POACEAE

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

Allium haematochiton    Red skinned onion,  Redskin onion
native
Perennial herb (bulb)

ALLIACEAE

Allium haematochiton
© 2017 Steve Matson
Allium haematochiton
© 2017 Steve Matson
Allium haematochiton
© 2017 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

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

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

Aphyllon fasciculatum    Clustered broomrape
native
Perennial herb (parasitic)

OROBANCHACEAE

Aphyllon fasciculatum
© 2016 Jim Xerogeanes
Aphyllon fasciculatum
© 2016 Jim Xerogeanes
Aphyllon fasciculatum
© 2023 Mary Ann Machi

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

APIACEAE

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

Aquilegia eximia    Serpentine columbine,  Sticky columbine,  Van Houtte's columbine
native
Perennial herb

RANUNCULACEAE

Aquilegia eximia
© 2024 Charles Russell
Aquilegia eximia
© 2019 Ken Hickman
Aquilegia eximia
© 2021 Mike Russler

Arctostaphylos obispoensis    Bishop manzanita,  Serpentine manzanita
rare native
Shrub

ERICACEAE

Arctostaphylos obispoensis
© 2019 Susan McDougall
Arctostaphylos obispoensis
© 2021 Mike Russler
Arctostaphylos obispoensis
© 2021 Mike Russler

Aristida adscensionis    Six weeks three awn,  Sixweeks threeawn
native
Annual grass

POACEAE

Aristida adscensionis
© 2023 Keir Morse
Aristida adscensionis
© 2023 Keir Morse
Aristida adscensionis
© 2016 James Bailey

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 fascicularis    Narrow leaf milkweed
native
Perennial herb

APOCYNACEAE

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

Asparagus asparagoides    African asparagus fern
invasive non-native
Vine

ASPARAGACEAE

Asparagus asparagoides
© 2023 Cynthia Powell
Asparagus asparagoides
© 2018 Ron Vanderhoff
Asparagus asparagoides
© 2022 Joan Miller

Aspidotis carlotta-halliae    Carlotta hall's lace fern
rare native
Fern (rhizomatous)

PTERIDACEAE

Aspidotis carlotta-halliae
© 2010 Neal Kramer
Aspidotis carlotta-halliae
© 2020 R.A. Chasey
Aspidotis carlotta-halliae
© 2020 R.A. Chasey

Astragalus curtipes    Morro milkvetch,  San luis obispo milkvetch,  South coast milk vetch
native
Perennial herb

FABACEAE

Astragalus curtipes
© 2021 Joel A. Germond, Psy.D.
Astragalus curtipes
© 2020 David Greenberger
Astragalus curtipes
© 2020 David Greenberger

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

FABACEAE

Astragalus gambelianus
© 2019 Ron Vanderhoff
Astragalus gambelianus
© 2019 Ron Vanderhoff
Astragalus gambelianus
© 2022 Mike Russler

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 glutinosa    Douglas' baccharis,  Salt marsh baccharis
native
Perennial herb

ASTERACEAE

Baccharis glutinosa
© 2020 Patrick Furtado
Baccharis glutinosa
© 2019 Julian Geoghegan
Baccharis glutinosa
© 2020 Rebecca Schoenenberger

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

Baccharis salicifolia    Mule fat., seep willow,  Mule's fat,  Mulefat
native
Shrub

ASTERACEAE

Baccharis salicifolia
© 2023 Julia Markey
Baccharis salicifolia
© 2020 Aaron Echols
Baccharis salicifolia
© 2023 Julia Markey

Bellardia trixago    Mediterranean lineseed
invasive non-native
Annual herb

OROBANCHACEAE

Bellardia trixago
© 2016 Michael Mitchell
Bellardia trixago
© 2016 Michael Mitchell
Bellardia trixago
© 2015 jamie smith

Berula erecta    Cut leaved water parsnip,  Cutleaf water parsnip,  Cutleaf waterparsnip
native
Perennial herb

APIACEAE

Berula erecta
© 2016 Steve Matson
Berula erecta
© 2016 Steve Matson
Berula erecta
© 2016 Steve Matson

Blitum californicum    Small Tree-Mallow


Bloomeria crocea var. crocea    Common goldenstar
native
Perennial herb

THEMIDACEAE

Bloomeria crocea var. crocea
© 2019 Michael Mitchell
Bloomeria crocea var. crocea
© 2019 Ron Vanderhoff
Bloomeria crocea var. crocea
© 2017 Aaron Echols

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

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

Bromus berteroanus    Chilean chess
non-native
Annual grass

POACEAE

Bromus berteroanus
© 2023 John Rawlings
Bromus berteroanus
© 2006 Steve Matson
Bromus berteroanus
© 2006 Steve Matson

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
© 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 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 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 menziesii    red maids,  Calandrinia
native
Annual herb

MONTIACEAE

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

Calendula officinalis    Pot marigold
non-native
Annual herb

ASTERACEAE

Calendula officinalis
© 2023 David Wolfson
Calendula officinalis
© 2019 Jennifer Mo
Calendula officinalis
© 2021 Jennifer Mo

Calibrachoa parviflora    Wild petunia
native
Annual herb

SOLANACEAE

Calibrachoa parviflora
© 2017 Ron Vanderhoff
Calibrachoa parviflora
© 2020 Ron Vanderhoff
Calibrachoa parviflora
© 2022 Ron Vanderhoff

Calochortus clavatus var. clavatus    Club haired mariposa lily,  Clubhair mariposa lily
rare native
Perennial herb (bulb)

LILIACEAE

Calochortus clavatus var. clavatus
© 2020 David Wolfson
Calochortus clavatus var. clavatus
© 2020 David Krause
Calochortus clavatus var. clavatus
© 2023 Mike Russler

Calochortus obispoensis    San luis mariposa lily
rare native
Perennial herb (bulb)

LILIACEAE

Calochortus obispoensis
© 2023 Morgan Stickrod
Calochortus obispoensis
© 2020 Meghan Lindt
Calochortus obispoensis
© 2018 Margarita Orlova

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 subacaulis ssp. episcopalis    Cambria morning glory,  San luis obispo county morning glory
rare native
Perennial herb (rhizomatous)

CONVOLVULACEAE

Calystegia subacaulis ssp. episcopalis
© 2019 David Greenberger
Calystegia subacaulis ssp. episcopalis
© 2021 Kristen Nelson
Calystegia subacaulis ssp. episcopalis
© 2018 Adonis Tate

Camissoniopsis intermedia    Intermediate sun cups
native
Annual herb

ONAGRACEAE

Camissoniopsis intermedia
© 2017 David Greenberger
Camissoniopsis intermedia
© 2016 Erik Larsen
Camissoniopsis intermedia
© 2018 Alice Cummings

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 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
© 2017 Gary McDonald

Carex nudata    Dudley's sedge,  Naked sedge,  Torrent sedge
native
Perennial grasslike herb

CYPERACEAE

Carex nudata
© 2022 R.A. Chasey
Carex nudata
© 2016 David Greenberger
Carex nudata
© 2014 John Malpas

Carex serratodens    Bifid sedge,  Two tooth sedge
native
Perennial grasslike herb

CYPERACEAE

Carex serratodens
© 2019 Steve Matson
Carex serratodens
© 2019 Steve Matson
Carex serratodens
© 2021 Cynthia Powell

Carex spissa    San diego sedge
native
Perennial grasslike herb

CYPERACEAE

Carex spissa
© 2016 Steve Matson
Carex spissa
© 2016 Steve Matson
Carex spissa
© 2016 Steve Matson

Carthamus lanatus    Woolly distaff thistle
invasive non-native
Annual herb

ASTERACEAE

Carthamus lanatus
© 2019 Lenihan Mazur
Carthamus lanatus
© 2019 Danielle Carney
Carthamus lanatus
© 2019 Danielle Carney

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 densiflora ssp. obispoensis    Obispo indian paintbrush,  San luis obispo owl's clover
native
Annual herb

OROBANCHACEAE

Castilleja densiflora ssp. obispoensis
© 2024 Kyle Suchy
Castilleja densiflora ssp. obispoensis
© 2023 Kyle Suchy
Castilleja densiflora ssp. obispoensis
© 2024 Kyle Suchy

Castilleja exserta ssp. exserta    Exserted indian paintbrush,  Pale purple owlclover,  Purple owl's clover
native
Annual herb

OROBANCHACEAE

Castilleja exserta ssp. exserta
© 2020 David Greenberger
Castilleja exserta ssp. exserta
© 2019 Ron Vanderhoff
Castilleja exserta ssp. exserta
© 2023 Ron Vanderhoff

Castilleja foliolosa    Texas paintbrush,  Woolly indian paintbrush
native
Perennial herb

OROBANCHACEAE

Castilleja foliolosa
© 2019 Ron Vanderhoff
Castilleja foliolosa
© 2019 Diane Etchison
Castilleja foliolosa
© 2019 Diane Etchison

native
Shrub

RHAMNACEAE

Ceanothus cuneatus var. ramulosus
© 2017 Robert Barnard
Ceanothus cuneatus var. ramulosus
© 2020 Robert Steers
Ceanothus cuneatus var. ramulosus
© 2023 Robert Steers

Cenchrus setaceus    Small Tree-Mallow


Centaurea calcitrapa    Purple star thistle,  Red star thistle
invasive non-native
Annual, Perennial herb

ASTERACEAE

Centaurea calcitrapa
© 2021 R.A. Chasey
Centaurea calcitrapa
© 2019 MCOSD EDRR
Centaurea calcitrapa
© 2022 R.A. Chasey

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

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

ROSACEAE

Cercocarpus betuloides var. betuloides
© 2019 Ron Vanderhoff
Cercocarpus betuloides var. betuloides
© 2019 Ron Vanderhoff
Cercocarpus betuloides var. betuloides
© 2016 Ron Vanderhoff

Chenopodiastrum murale    Small Tree-Mallow


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

Chlorogalum pomeridianum var. minus    Dwarf soaproot,  Wavyleaf soap plant
rare native
Perennial herb (bulb)

AGAVACEAE

Chlorogalum pomeridianum var. minus
© 1997 Dean Wm. Taylor
Chlorogalum pomeridianum var. minus
© 2011 Dean Wm. Taylor, Ph.D.
Chlorogalum pomeridianum var. minus
© 2011 Dean Wm. Taylor, Ph.D.

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

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

ASTERACEAE

Chondrilla juncea
© 2021 George Williams
Chondrilla juncea
© 2021 Julia Kosowitz
Chondrilla juncea
© 2021 Bob Sweatt

Chorizanthe breweri    Brewer's spineflower,  San luis obispo spineflower
rare native
Annual herb

POLYGONACEAE

Chorizanthe breweri
© 2020 David Greenberger
Chorizanthe breweri
© 2020 David Greenberger
Chorizanthe breweri
© 2023 Mike Russler

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 bottae    Botta's clarkia,  Punch bowl godetia
native
Annual herb

ONAGRACEAE

Clarkia bottae
© 2023 Ron Vanderhoff
Clarkia bottae
© 2020 Steve Laymon
Clarkia bottae
© 2020 Steve Laymon

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

MONTIACEAE

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

Claytonia 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

Clinopodium douglasii    Yerba buena
native
Perennial herb

LAMIACEAE

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

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
© 2019 James Bailey
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

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

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

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 muricata var. muricata    Showy prickly-nut cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha muricata var. muricata
© 2023 Mike Russler
Cryptantha muricata var. muricata
© 2023 Mike Russler
Cryptantha muricata var. muricata
© 2023 Mike Russler

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

POACEAE

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

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

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

Datura stramonium    Jimson weed,  Jimsonweed
non-native
Annual herb

SOLANACEAE

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

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

Deinandra corymbosa    Coastal tarweed
native
Annual herb

ASTERACEAE

Deinandra corymbosa
© 2016 Michael Mitchell
Deinandra corymbosa
© 2018 Zachariah Jordan
Deinandra corymbosa
© 2015 Tim Miller

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 parryi ssp. eastwoodiae    Eastwood's larkspur
rare native
Perennial herb

RANUNCULACEAE

Delphinium parryi ssp. eastwoodiae
© 2023 Mike Russler
Delphinium parryi ssp. eastwoodiae
© 2023 Mike Russler
Delphinium parryi ssp. eastwoodiae
© 2023 Mike Russler

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

Dipsacus sativus    Fuller's teasel,  Indian teasel
invasive non-native
Annual, Biennial herb

DIPSACACEAE

Dipsacus sativus
© 2019 Danielle Carney
Dipsacus sativus
© 2022 Jennifer Mo
Dipsacus sativus
© 2022 David Strauch

native
Perennial herb

THEMIDACEAE

Dipterostemon capitatus ssp. capitatus
© 2008 Steve Matson
Dipterostemon capitatus ssp. capitatus
© 2016 Steve Matson
Dipterostemon capitatus ssp. capitatus
© 2016 Steve Matson

Dittrichia graveolens    Stinkwort
invasive non-native
Annual herb

ASTERACEAE

Dittrichia graveolens
© 2017 Bob Huttar
Dittrichia graveolens
© 2019 Ron Vanderhoff
Dittrichia graveolens
© 2019 Ron Vanderhoff

Dryopteris arguta    California wood fern,  Coastal wood fern,  Shield fern
native
Fern

DRYOPTERIDACEAE

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

Dudleya abramsii ssp. murina    San Luis Obispo dudleya
rare native
Perennial herb

CRASSULACEAE

Dudleya abramsii ssp. murina
© 2023 Mike Russler
Dudleya abramsii ssp. murina
© 2023 Mike Russler
Dudleya abramsii ssp. murina
© 2023 Mike Russler

Dudleya lanceolata    Lanceleaf liveforever,  Southern california dudleya
native
Perennial herb

CRASSULACEAE

Dudleya lanceolata
© 2019 Ron Vanderhoff
Dudleya lanceolata
© 2020 Steven M Norris
Dudleya lanceolata
© 2020 Steven M Norris

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

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

Elymus condensatus    Giant wild rye
native
Perennial grass

POACEAE

Elymus condensatus
© 2020 Ron Vanderhoff
Elymus condensatus
© 2022 John Rawlings
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
© 2014 Toni Corelli
Elymus glaucus ssp. glaucus
© 2021 Arlee Montalvo
Elymus glaucus ssp. glaucus
© 2022 Ron Vanderhoff

Elymus multisetus    Big squirreltail grass
native
Perennial grass

POACEAE

Elymus multisetus
© 2019 Ron Vanderhoff
Elymus multisetus
© 2023 Helen Hancock
Elymus multisetus
© 2021 Denise Defreese

Elymus triticoides    Beardless wild rye
native
Perennial grass

POACEAE

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

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

ONAGRACEAE

Epilobium canum ssp. canum
© 2018 Ron Vanderhoff
Epilobium canum ssp. canum
© 2018 Ron Vanderhoff
Epilobium canum ssp. canum
© 2018 Ron Vanderhoff

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

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 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

Eragrostis mexicana ssp. virescens    Mexican lovegrass,  Orcutt's eragrostis
native
Annual grass

POACEAE

Eragrostis mexicana ssp. virescens
© 2022 Ron Vanderhoff
Eragrostis mexicana ssp. virescens
© 2022 Ron Vanderhoff
Eragrostis mexicana ssp. virescens
© 2022 Ron Vanderhoff

Erigeron bonariensis    Flax-leaved horseweed
non-native
Annual herb

ASTERACEAE

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

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 var. foliosus    Leafy fleabane,  Thread stemmed fleabane
native
Perennial herb, Shrub

ASTERACEAE

Erigeron foliosus var. foliosus
© 2023 Ron Vanderhoff
Erigeron foliosus var. foliosus
© 2021 Jacob Martin
Erigeron foliosus var. foliosus
© 2022 Ron Vanderhoff

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 sumatrensis    Tropical horseweed
non-native
Annual herb

ASTERACEAE

Erigeron sumatrensis
© 2021 Doug Allshouse
Erigeron sumatrensis
© 2020 Ron Vanderhoff
Erigeron sumatrensis
© 2020 Ron Vanderhoff

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. fasciculatum    California buckwheat,  Eastern mojave buckwheat
native
Shrub

POLYGONACEAE

Eriogonum fasciculatum var. fasciculatum
© 2019 Ron Vanderhoff
Eriogonum fasciculatum var. fasciculatum
© 2019 Ron Vanderhoff
Eriogonum fasciculatum var. fasciculatum
© 2019 Ron Vanderhoff

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

ASTERACEAE

Eriophyllum confertiflorum var. confertiflorum
© 2024 Richard Spjut
Eriophyllum confertiflorum var. confertiflorum
© 2013 James Gonsman
Eriophyllum confertiflorum var. confertiflorum
© 2020 Ron Vanderhoff

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

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

Erythranthe cardinalis    Cardinal monkey flower
native
Perennial herb

PHRYMACEAE

Erythranthe cardinalis
© 2014 James Gonsman
Erythranthe cardinalis
© 2023 Steve Conger
Erythranthe cardinalis
© 2021 Mike Russler

native
Perennial

PHRYMACEAE

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

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

PAPAVERACEAE

Eschscholzia caespitosa
© 2019 Ron Vanderhoff
Eschscholzia caespitosa
© 2021 Lisa Berry
Eschscholzia caespitosa
© 2022 Cynthia Powell

Eschscholzia californica    California poppy
native
Annual, Perennial herb

PAPAVERACEAE

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

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

MYRTACEAE

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

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

Eulobus californicus    California primrose
native
Annual herb

ONAGRACEAE

Eulobus californicus
© 2019 Elexis Padron
Eulobus californicus
© 2019 Ron Vanderhoff
Eulobus californicus
© 2019 Elexis Padron

Euphorbia peplus    Petty spurge
non-native
Annual herb

EUPHORBIACEAE

Euphorbia peplus
© 2006 Steve Matson
Euphorbia peplus
© 2022 Alice Cummings
Euphorbia peplus
© 2005 Luigi Rignanese

Euphorbia spathulata    Reticulate seeded spurge,  Warty spurge
native
Annual herb

EUPHORBIACEAE

Euphorbia spathulata
© 2021 R.A. Chasey
Euphorbia spathulata
© 2014 Steve Matson
Euphorbia spathulata
© 2014 Steve Matson

Eurybia radulina    Roughleaf aster
native
Perennial herb

ASTERACEAE

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

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 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

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

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

Fremontodendron californicum    California flannelbush,  California fremontia,  Flannel bush
native
Shrub

MALVACEAE

Fremontodendron californicum
© 2020 Suzanne L. Weakley
Fremontodendron californicum
© 2019 Diane Etchison
Fremontodendron californicum
© 2020 Tom Ballinger

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

Fritillaria biflora var. biflora    Chocolate lily
native
Perennial herb (bulb)

LILIACEAE

Fritillaria biflora var. biflora
© 2006 Steve Matson
Fritillaria biflora var. biflora
© 2006 Steve Matson
Fritillaria biflora var. biflora
© 2006 Steve Matson

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
© 2005 Steve Matson
Galium aparine
© 2020 Ron Vanderhoff

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

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 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

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 achilleifolia ssp. multicaulis    Many stemmed california gilia,  Many stemmed gilia
native
Annual herb

POLEMONIACEAE

Gilia achilleifolia ssp. multicaulis
© 2022 Ron Vanderhoff
Gilia achilleifolia ssp. multicaulis
© 2021 Ron Vanderhoff
Gilia achilleifolia ssp. multicaulis
© 2022 Ron Vanderhoff

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

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

Hedypnois rhagadioloides    Crete weed
non-native
Annual herb

ASTERACEAE

Hedypnois rhagadioloides
© 2022 Steve Matson
Hedypnois rhagadioloides
© 2022 Steve Matson
Hedypnois rhagadioloides
© 2022 Steve Matson

Helenium puberulum    Rosilla,  Sneezeweed
native
Perennial herb

ASTERACEAE

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

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

ASTERACEAE

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

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

Hesperevax sparsiflora var. sparsiflora    Erect dwarf cudweed,  Few flowered evax
native
Annual herb

ASTERACEAE

Hesperevax sparsiflora var. sparsiflora
© 2020 Stacie Wolny
Hesperevax sparsiflora var. sparsiflora
© 2020 R.A. Chasey
Hesperevax sparsiflora var. sparsiflora
© 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

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

LINACEAE

Hesperolinon micranthum
© 2020 David Greenberger
Hesperolinon micranthum
© 2023 R.A. Chasey
Hesperolinon micranthum
© 2021 R.A. Chasey

Hesperoyucca whipplei    Chaparral yucca
native
Shrub

AGAVACEAE

Hesperoyucca whipplei
© Geoff Burleigh
Hesperoyucca whipplei
© 2023 Jordan Collins
Hesperoyucca whipplei
© 2020 Julia Markey

Heteromeles arbutifolia    Christmas berry,  Toyon
native
Shrub

ROSACEAE

Heteromeles arbutifolia
© 2015 James Gonsman
Heteromeles arbutifolia
© 2017 Gary McDonald
Heteromeles arbutifolia
© 2017 Gary McDonald

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

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

Hordeum brachyantherum ssp. californicum    California barley,  California meadow barley
native
Perennial grass

POACEAE

Hordeum brachyantherum ssp. californicum
© 2011 Steve Matson
Hordeum brachyantherum ssp. californicum
© 2011 Steve Matson
Hordeum brachyantherum ssp. californicum
© 2011 Steve Matson

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

POACEAE

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

Hordeum marinum subsp gussoneanum    Small Tree-Mallow


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 vulgare    Common barley
non-native
Annual grass

POACEAE

Hordeum vulgare
© 2019 Ron Vanderhoff
Hordeum vulgare
© 2019 Ron Vanderhoff
Hordeum vulgare
© 2022 Ron Vanderhoff

Hypochaeris glabra    Smooth cat's ear
invasive non-native
Annual herb

ASTERACEAE

Hypochaeris glabra
© 2020 Ron Vanderhoff
Hypochaeris glabra
© 2017 Gary McDonald
Hypochaeris glabra
© 2019 Ron Vanderhoff

Juglans hindsii    Northern california black walnut
rare native
Tree

JUGLANDACEAE

Juglans hindsii
© 2018 Ron Vanderhoff
Juglans hindsii
© 2016 Steve Matson
Juglans hindsii
© 2018 Ron Vanderhoff

native
Perennial grasslike herb

JUNCACEAE

Juncus articulatus ssp. articulatus
© 2022 joaquin hale
Juncus articulatus ssp. articulatus
© 2022 joaquin hale
Juncus articulatus ssp. articulatus
© 2022 joaquin hale

native
Annual grasslike herb

JUNCACEAE

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

Juncus effusus 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 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 phaeocephalus var. phaeocephalus    Brown headed rush,  Brownhead rush
native
Perennial grasslike herb

JUNCACEAE

Juncus phaeocephalus var. phaeocephalus
© 2019 Dee Shea Himes
Juncus phaeocephalus var. phaeocephalus
© 2024 R.A. Chasey
Juncus phaeocephalus var. phaeocephalus
© 2019 John Rawlings

non-native
Perennial grasslike herb

JUNCACEAE

Juncus usitatus
© 2021 Richard Spjut
Juncus usitatus
© 2021 Richard Spjut

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

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

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

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

Lasthenia gracilis    Needle goldfields
native
Annual herb

ASTERACEAE

Lasthenia gracilis
© 2014 Steve Matson
Lasthenia gracilis
© 2014 Steve Matson
Lasthenia gracilis
© 2014 Steve Matson

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 jonesii    Jones' tidytips,  Jones's layia
rare native
Annual herb

ASTERACEAE

Layia jonesii
© 2021 Kristen Nelson
Layia jonesii
© 2021 Kristen Nelson
Layia jonesii
© 2011 Chris Winchell

Layia platyglossa    Coastal tidytips
native
Annual herb

ASTERACEAE

Layia platyglossa
© 2015 Amy Rapport
Layia platyglossa
© 2019 Jenna T. B. Ekwealor
Layia platyglossa
© 2017 Chris Mo

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

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

BRASSICACEAE

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

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

BRASSICACEAE

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

Leptochloa fusca ssp. fascicularis    Bearded sprangletop
native
Annual grass

POACEAE

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

Leptosiphon parviflorus    Variable linanthus
native
Annual herb

POLEMONIACEAE

Leptosiphon parviflorus
© 2008 Keir Morse
Leptosiphon parviflorus
© 2008 Keir Morse
Leptosiphon parviflorus
© 2008 Keir Morse

Leptosyne douglasii    Douglas' coreopsis
native
Annual herb

ASTERACEAE

Leptosyne douglasii
© 2020 Manzanita Dictionary
Leptosyne douglasii
© 2020 Manzanita Dictionary
Leptosyne douglasii
© 2020 Manzanita Dictionary

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
© 2019 David Magney
Lithophragma heterophyllum
© 2018 Ken Lunders

Logfia gallica    Narrowleaf cottonrose
non-native
Annual herb

ASTERACEAE

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

Lomatium caruifolium var. caruifolium    Alkali desertparsley,  Caraway leaved lomatium
native
Perennial herb

APIACEAE

Lomatium caruifolium var. caruifolium
© 2014 Steve Matson
Lomatium caruifolium var. caruifolium
© 2014 Steve Matson
Lomatium caruifolium var. caruifolium
© 2014 Steve Matson

Lomatium dasycarpum ssp. dasycarpum    Woolly fruited lomatium,  Woollyfruit desertparsley
native
Perennial herb

APIACEAE

Lomatium dasycarpum ssp. dasycarpum
© 2016 Steve Matson
Lomatium dasycarpum ssp. dasycarpum
© 2016 Steve Matson
Lomatium dasycarpum ssp. dasycarpum
© 2016 Steve Matson

Lomatium parvifolium    Coastal biscuitroot,  Small leaved lomatium
rare native
Perennial herb

APIACEAE

Lomatium parvifolium
© 2020 David Greenberger
Lomatium parvifolium
© 2023 Mike Russler
Lomatium parvifolium
© 2021 Patrick Furtado

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

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 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 nanus    Sky lupine
native
Annual herb

FABACEAE

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

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

Madia elegans    Common madia
native
Annual herb

ASTERACEAE

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

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

Malva parviflora    Cheeseweed mallow
non-native
Annual herb

MALVACEAE

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

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

Marrubium vulgare    White horehound
invasive non-native
Perennial herb

LAMIACEAE

Marrubium vulgare
© 2013 Gary McDonald
Marrubium vulgare
© 2015 Diane Etchison
Marrubium vulgare
© 2018 Nancy Hamlett

Matricaria discoidea    Pineapple weed
native
Annual herb

ASTERACEAE

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

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

FABACEAE

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

Melica californica    California melicgrass
native
Perennial grass

POACEAE

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

Melica 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

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

POACEAE

Melica torreyana
© 2021 Toni Corelli
Melica torreyana
© 2019 John Rawlings
Melica torreyana
© 2017 MCOSD Restoration Crew

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

Micranthes californica    Greene's saxifrage
native
Perennial herb

SAXIFRAGACEAE

Micranthes californica
© 2016 Steve Matson
Micranthes californica
© 2016 Steve Matson
Micranthes californica
© 2016 Steve Matson

Micropus californicus var. californicus    Q tips,  Slender cottonweed
native
Annual herb

ASTERACEAE

Micropus californicus var. californicus
© 2006 Steve Matson
Micropus californicus var. californicus
© 2021 Ron Vanderhoff
Micropus californicus var. californicus
© 2016 Steve Matson

Microseris bigelovii    Coast microseris,  Coastal silverpuffs
native
Annual herb

ASTERACEAE

Microseris bigelovii
© 2023 Leslie Flint
Microseris bigelovii
© 2022 R.A. Chasey
Microseris bigelovii
© 2011 Toni Corelli

Microseris douglasii ssp. tenella    Douglas' silverpuffs,  Short scaled microseris
native
Annual herb

ASTERACEAE

Microseris douglasii ssp. tenella
© 2022 Helen Hancock
Microseris douglasii ssp. tenella
© 2019 Diane Renshaw
Microseris douglasii ssp. tenella
© 2022 Helen Hancock

Mirabilis laevis var. crassifolia    California four o'clock
native
Perennial herb

NYCTAGINACEAE

Mirabilis laevis var. crassifolia
© 2014 Steve Matson
Mirabilis laevis var. crassifolia
© 2014 Steve Matson
Mirabilis laevis var. crassifolia
© 2014 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

Muhlenbergia microsperma    Annual muhly,  Littleseed muhly
native
Annual grass

POACEAE

Muhlenbergia microsperma
© 2017 Ron Vanderhoff
Muhlenbergia microsperma
© 2019 Ron Vanderhoff
Muhlenbergia microsperma
© 2023 Ron Vanderhoff

Nasturtium officinale    Watercress
native
Perennial herb (aquatic)

BRASSICACEAE

Nasturtium officinale
© 2012 Steve Matson
Nasturtium officinale
© 2012 Steve Matson
Nasturtium officinale
© 2012 Steve Matson

Nicotiana glauca    Tree tobacco
invasive non-native
Tree, Shrub

SOLANACEAE

Nicotiana glauca
© 2019 Jean B Henney
Nicotiana glauca
© 2017 Steve Matson
Nicotiana glauca
© 2017 Steve Matson

Opuntia ficus-indica    Mission cactus,  Tuna cactus
non-native
Shrub (stem succulent)

CACTACEAE

Opuntia ficus-indica
© 2020 Ron Vanderhoff
Opuntia ficus-indica
© 2020 Ron Vanderhoff
Opuntia ficus-indica
© 2020 Ron Vanderhoff

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

OXALIDACEAE

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

Oxalis incarnata    Crimson woodsorrel
non-native
Perennial herb

OXALIDACEAE

Oxalis incarnata
© 2022 Friends of Five Creeks volunteers
Oxalis incarnata
© 2018 MCOSD EDRR
Oxalis incarnata
© 2012 Yves Antoinette

Oxalis pes-caprae    Bermuda buttercup,  Sourgrass
invasive non-native
Perennial herb

OXALIDACEAE

Oxalis pes-caprae
© 2015 Richard Chasey
Oxalis pes-caprae
© 2017 Angelique Herman
Oxalis pes-caprae
© 2019 Gary McDonald

Oxalis pilosa    Hairy wood sorrel
native
Annual herb

OXALIDACEAE

Oxalis pilosa
© 2022 R.A. Chasey
Oxalis pilosa
© 2009 Avis Boutell
Oxalis pilosa
© 2022 Cynthia Powell

Paeonia californica    California peony
native
Perennial herb

PAEONIACEAE

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

Paspalum dilatatum    Dallis grass,  Dallisgrass
non-native
Perennial grass

POACEAE

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

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

Perideridia pringlei    Adobe yampah
rare native
Perennial herb

APIACEAE

Perideridia pringlei
© 2023 Mike Russler
Perideridia pringlei
© 2023 Mike Russler
Perideridia pringlei
© 2023 Mike Russler

Persicaria lapathifolia    Common knotweed
native
Annual herb

POLYGONACEAE

Persicaria lapathifolia
© 2020 Ron Vanderhoff
Persicaria lapathifolia
© 2017 Ron Vanderhoff
Persicaria lapathifolia
© 2020 Ron Vanderhoff

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

HYDROPHYLLACEAE

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

Phacelia imbricata ssp. imbricata    Imbricate Phacelia
native
Annual herb

HYDROPHYLLACEAE

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

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

POACEAE

Phalaris aquatica
© 2018 Thomas Reyes
Phalaris aquatica
© 2021 Lenihan Mazur
Phalaris aquatica
© 2022 Lenihan Mazur

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

POACEAE

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

Phoenix canariensis    Canary island date palm
invasive non-native
Tree

ARECACEAE

Phoenix canariensis
© 2020 Ron Vanderhoff
Phoenix canariensis
© 2022 Ron Vanderhoff
Phoenix canariensis
© 2021 James Bailey

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

Pistacia atlantica    Mt. atlas mastic tree,  Pistachio
invasive non-native
Tree

ANACARDIACEAE

Pistacia atlantica
© 2020 Sara Sweet
Pistacia atlantica
© 2018 Angelique Herman
Pistacia atlantica
© 2020 Sara Sweet

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

BORAGINACEAE

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

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

PLANTAGINACEAE

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

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

PLANTAGINACEAE

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

Plantago major    Common plantain
non-native
Perennial herb

PLANTAGINACEAE

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

Plantago subnuda    Mexican plantain,  Naked plantain,  Tall coastal plantain
native
Perennial herb

PLANTAGINACEAE

Plantago subnuda
© 2019 Patrick Furtado
Plantago subnuda
© 2022 Dianne Lake
Plantago subnuda
© 2009 Toni Corelli

Platanus racemosa    California sycamore,  Western sycamore
native
Tree

PLATANACEAE

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

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

POACEAE

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

Poa pratensis    Kentucky blue grass,  Kentucky bluegrass
invasive non-native
Perennial grass

POACEAE

Poa pratensis
© 2013 Andrea Williams
Poa pratensis
© 2008 Keir Morse
Poa pratensis
© 2013 Andrea Williams

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

Polypogon interruptus    Ditch beard grass,  Ditch rabbitsfoot grass
non-native
Perennial grass

POACEAE

Polypogon interruptus
© 2022 John Rawlings
Polypogon interruptus
© 2022 John Rawlings
Polypogon interruptus
© 2020 Ron Vanderhoff

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

POACEAE

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

Polypogon viridis    Water beard grass
non-native
Perennial grass

POACEAE

Polypogon viridis
© 2022 Ron Vanderhoff
Polypogon viridis
© 2021 Ron Vanderhoff
Polypogon viridis
© 2019 Friends of Five Creeks volunteers

Populus fremontii ssp. fremontii    Fremont cottonwood
native
Tree

SALICACEAE

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

Populus trichocarpa    Black cottonwood
native
Tree

SALICACEAE

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

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

PORTULACACEAE

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

Potentilla anserina ssp. pacifica    Pacific potentilla,  Silverweed
native
Perennial herb

ROSACEAE

Potentilla anserina ssp. pacifica
© 2022 R.A. Chasey
Potentilla anserina ssp. pacifica
© 2021 Charles Russell
Potentilla anserina ssp. pacifica
© 2022 R.A. Chasey

Primula clevelandi    Small Tree-Mallow


Prunus dulcis    Domestic almond,  Sweet almond
non-native
Tree

ROSACEAE

Prunus dulcis
© 2012 Wes Gray
Prunus dulcis
© 2022 Donald Burk
Prunus dulcis
© 2021 David popp

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

ROSACEAE

Prunus ilicifolia var. ilicifolia
© 2018 David Greenberger
Prunus ilicifolia var. ilicifolia
© 2019 Ron Vanderhoff
Prunus ilicifolia var. ilicifolia
© 2020 James Gonsman

Pseudognaphalium biolettii    Two-color rabbit-tobacco
native
Perennial herb

ASTERACEAE

Pseudognaphalium biolettii
© 2019 David Greenberger
Pseudognaphalium biolettii
© 2019 Ron Vanderhoff
Pseudognaphalium biolettii
© 2019 Ron Vanderhoff

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 stramineum    Cottonbatting plant
native
Perennial herb

ASTERACEAE

Pseudognaphalium stramineum
© 2017 Gary McDonald
Pseudognaphalium stramineum
© 2017 Gary McDonald
Pseudognaphalium stramineum
© 2017 Gary McDonald

Psilocarphus tenellus    Slender woolly marbles,  Slender woollyheads
native
Annual herb

ASTERACEAE

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

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

DENNSTAEDTIACEAE

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

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
© 2020 Cynthia Keiser
Quercus berberidifolia
© 2020 Cynthia Keiser

Quercus douglasii    Blue oak
native
Tree

FAGACEAE

Quercus douglasii
© 2018 Gary McDonald
Quercus douglasii
© 2020 Charles Russell
Quercus douglasii
© 2019 Susan McDougall

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 lobata    California white oak,  Valley oak
native
Tree

FAGACEAE

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

Ranunculus californicus    California buttercup
native
Perennial herb

RANUNCULACEAE

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

Rhamnus crocea    Redberry buckthorn
native
Shrub

RHAMNACEAE

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

Rhus integrifolia    Lemonade berry,  Lemonade sumac
native
Shrub

ANACARDIACEAE

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

Ribes malvaceum var. indecorum    White flowering currant,  Whiteflower currant
native
Shrub

GROSSULARIACEAE

Ribes malvaceum var. indecorum
© 2020 Diane Etchison
Ribes malvaceum var. indecorum
© 2020 Diane Etchison
Ribes malvaceum var. indecorum
© 2020 Diane Etchison

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 speciosum    Fuchsia flowered gooseberry,  Fuchsiaflower gooseberry
native
Shrub

GROSSULARIACEAE

Ribes speciosum
© 2022 David Chipping
Ribes speciosum
© 2021 Ron Vanderhoff
Ribes speciosum
© 2021 Ron Vanderhoff

Ricinus communis    Castor bean,  Castorbean
invasive non-native
Shrub

EUPHORBIACEAE

Ricinus communis
© 2017 Henry DiRocco
Ricinus communis
© 2020 Aaron Echols
Ricinus communis
© 2022 Ron Vanderhoff

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 conglomeratus    Clustered dock,  Green dock
non-native
Perennial herb

POLYGONACEAE

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

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

POLYGONACEAE

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

Rumex fueginus    Golden dock
native
Annual, Perennial herb

POLYGONACEAE

Rumex fueginus
© 2022 Steve Ashcraft
Rumex fueginus
© 2021 Donald Burk
Rumex fueginus
© 2020 Ron Vanderhoff

Rumex pulcher    Fiddle dock
non-native
Perennial herb

POLYGONACEAE

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

Sabulina douglasii    Douglas' Stitchwort
native
Annual herb

CARYOPHYLLACEAE

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

Salix exigua var. hindsiana    Sandbar willow
native
Tree, Shrub

SALICACEAE

Salix exigua var. hindsiana
© 2022 Robbie Lee
Salix exigua var. hindsiana
© 2017 Dee Shea Himes
Salix exigua var. hindsiana
© 02/22/2022 John Rawlings

Salix laevigata    Polished willow,  Red willow
native
Tree

SALICACEAE

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

Salix lasiolepis    Arroyo willow
native
Tree, Shrub

SALICACEAE

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

Salsola australis    Russian thistle
non-native
Annual herb

CHENOPODIACEAE

Salsola australis
© 2018 Ron Vanderhoff
Salsola australis
© 2017 James Bailey
Salsola australis
© 2019 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

Salvia spathacea    Hummingbird sage
native
Perennial herb

LAMIACEAE

Salvia spathacea
© 2020 David Wolfson
Salvia spathacea
© 2020 Abby Nichols
Salvia spathacea
© 2020 Bryant Baker

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 arguta    Sharp toothed sanicle,  Sharp toothed snakeroot,  Sharptooth blacksnakeroot
native
Perennial herb

APIACEAE

Sanicula arguta
© 2006 Steve Matson
Sanicula arguta
© 2006 Steve Matson
Sanicula arguta
© 2006 Steve Matson

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

APIACEAE

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

Sanicula hoffmannii    Hoffmann's blacksnakeroot,  Hoffmann's sanicle,  Hoffmann's snakeroot
rare native
Perennial herb

APIACEAE

Sanicula hoffmannii
© 2019 Ken Hickman
Sanicula hoffmannii
© 2015 David Wolfson
Sanicula hoffmannii
© 2018 Ken Hickman

Sanicula laciniata    Coast sanicle,  Coastal blacksnakeroot
native
Perennial herb

APIACEAE

Sanicula laciniata
© 2022 Diane Renshaw
Sanicula laciniata
© 2022 R.A. Chasey
Sanicula laciniata
© 2018 Ken Hickman

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

APIACEAE

Scandix pecten-veneris
© 2006 Steve Matson
Scandix pecten-veneris
© 2018 Stacie Wolny
Scandix pecten-veneris
© 2006 Steve Matson

Schinus molle    Peruvian pepper tree,  Peruvian peppertree
invasive non-native
Tree

ANACARDIACEAE

Schinus molle
© 2021 stephen rosenthal
Schinus molle
© 2017 William McCarey
Schinus molle
© 2023 Ron Vanderhoff

Schoenoplectus americanus    Chairmaker's bulrush
native
Perennial grasslike herb

CYPERACEAE

Schoenoplectus americanus
© 2021 Ron Vanderhoff
Schoenoplectus americanus
© 2016 Joan Hampton
Schoenoplectus americanus
© 2020 Ron Vanderhoff

Schoenoplectus californicus    California bulrush
native
Perennial grasslike herb

CYPERACEAE

Schoenoplectus californicus
© 2022 John Rawlings
Schoenoplectus californicus
© 2022 John Rawlings
Schoenoplectus californicus
© 2021 Ron Vanderhoff

Scirpus microcarpus    Panicled bulrush,  Small fruited bulrush
native
Perennial grasslike herb

CYPERACEAE

Scirpus microcarpus
© 2022 Doug Allshouse
Scirpus microcarpus
© 2008 Steve Matson
Scirpus microcarpus
© 2013 Ron Vanderhoff

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

SCROPHULARIACEAE

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

Selaginella bigelovii    Bigelow's moss fern,  Bigelow's spike moss,  Bushy spikemoss
Selaginella bigelovii
© 2019 Ron Vanderhoff
Selaginella bigelovii
© 2019 Ron Vanderhoff
Selaginella bigelovii
© 2018 Ron Vanderhoff

Senecio aphanactis    California groundsel,  Chaparral ragwort,  Rayless ragwort
rare native
Annual herb

ASTERACEAE

Senecio aphanactis
© 2023 Matt Berger
Senecio aphanactis
© 2019 Matt Berger
Senecio aphanactis
© 2023 Matt Berger

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

ASTERACEAE

Senecio vulgaris
© 2017 Barbara Boethling
Senecio vulgaris
© 2019 Ron Vanderhoff
Senecio vulgaris
© 2021 Toni Corelli

Setaria pumila    Yellow bristlegrass
non-native
Annual grass

POACEAE

Setaria pumila
© 2017 Peter Warner
Setaria pumila
© 2016 Thomas Reyes
Setaria pumila
© 2017 Peter Warner

Sidalcea malviflora ssp. laciniata    Dwarf checkerbloom,  Laciniate checker mallow
native
Perennial herb (rhizomatous)

MALVACEAE

Sidalcea malviflora ssp. laciniata
© 2020 David Greenberger
Sidalcea malviflora ssp. laciniata
© 2021 Maria Stokes
Sidalcea malviflora ssp. laciniata
© 2021 Heather Brady DeQuincy

Silene antirrhina    Sleepy catch fly,  Sleepy catchfly,  Sleepy silene
native
Annual herb

CARYOPHYLLACEAE

Silene antirrhina
© 2019 Ken Hickman
Silene antirrhina
© 2019 Ken Hickman
Silene antirrhina
© 2023 Matt Berger

Silene gallica    Common catchfly,  Windmill pink
non-native
Annual herb

CARYOPHYLLACEAE

Silene gallica
© 2019 Mary Wloch
Silene gallica
© 2017 Gary McDonald
Silene gallica
© 2019 Gary McDonald

Silene laciniata ssp. laciniata    Cardinal catchfly
native
Perennial herb

CARYOPHYLLACEAE

Silene laciniata ssp. laciniata
© 2020 David Greenberger
Silene laciniata ssp. laciniata
© 2023 Ron Vanderhoff
Silene laciniata ssp. laciniata
© 2023 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

Sinapis arvensis    Charlock mustard
invasive non-native
Annual herb

BRASSICACEAE

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

Sisyrinchium bellum    Western blue eyed grass
native
Perennial herb

IRIDACEAE

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

Solanum douglasii    Douglas' nightshade,  Greenspot nightshade
native
Perennial herb

SOLANACEAE

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

Solanum umbelliferum var. xanti    Blue witch nightshade,  Bluewitch nightshade
native
Shrub

SOLANACEAE

Solanum umbelliferum var. xanti
© 2014 Steve Matson
Solanum umbelliferum var. xanti
© 2014 Steve Matson
Solanum umbelliferum var. xanti
© 2014 Steve Matson

Solidago confinis    Southern goldenrod
native
Perennial herb

ASTERACEAE

Solidago confinis
© 2022 Ryan O'Dell
Solidago confinis
© 2003 Christopher L. Christie
Solidago confinis
© 2014 Neal Kramer

Solidago velutina ssp. californica    California goldenrod,  Oreja de liebre
native
Perennial herb

ASTERACEAE

Solidago velutina ssp. californica
© 2013 Steve Matson
Solidago velutina ssp. californica
© 2008 Steve Matson
Solidago velutina ssp. californica
© 2008 Steve Matson

Soliva sessilis    Common soliva,  Field burrweed,  South american soliva
non-native
Annual herb

ASTERACEAE

Soliva sessilis
© 2022 Diana Wahl
Soliva sessilis
© 2019 Abbot Chambers
Soliva sessilis
© 2019 Abbot Chambers

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

Stebbinsoseris heterocarpa    Grassland stebbinsoseris
native
Annual herb

ASTERACEAE

Stebbinsoseris heterocarpa
© 2019 Ron Vanderhoff
Stebbinsoseris heterocarpa
© 2019 Ron Vanderhoff
Stebbinsoseris heterocarpa
© 2017 Diane Etchison

Stellaria media    Chickweed
non-native
Annual herb

CARYOPHYLLACEAE

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

Stephanomeria cichoriacea    Chicory leaved stephanomeria,  Chicoryleaf wirelettuce,  Fort tejon milk aster
native
Perennial herb

ASTERACEAE

Stephanomeria cichoriacea
© 2019 David Greenberger
Stephanomeria cichoriacea
© 2012 Ron Vanderhoff
Stephanomeria cichoriacea
© 2018 John Game

Stephanomeria exigua ssp. carotifera    White plume stephanomeria,  Whiteplume wirelettuce
native
Perennial herb

ASTERACEAE

Stephanomeria exigua ssp. carotifera
© 2018 Mary Conway
Stephanomeria exigua ssp. carotifera
© 2018 Mary Conway
Stephanomeria exigua ssp. carotifera
© 2018 Mary Conway

Stipa lepida    Foothill needle grass
native
Perennial grass

POACEAE

Stipa lepida
© 2017 Gary McDonald
Stipa lepida
© 2023 Ron Vanderhoff
Stipa lepida
© 2017 Gary McDonald

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

POACEAE

Stipa miliacea var. miliacea
© 2022 Donald Burk
Stipa miliacea var. miliacea
© 2009 Keir Morse
Stipa miliacea var. miliacea
© 2022 Donald Burk

Stipa pulchra    Purple needle grass
native
Perennial grass

POACEAE

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

native
Annual herb

BRASSICACEAE

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

Streptanthus lasiophyllus    Small Tree-Mallow


Stylocline gnaphaloides    Everlasting nest straw,  Everlasting stylocline,  Mountain neststraw
native
Annual herb

ASTERACEAE

Stylocline gnaphaloides
© 2019 Diane Etchison
Stylocline gnaphaloides
© 2021 Ron Vanderhoff
Stylocline gnaphaloides
© 2021 Ron Vanderhoff

Symphoricarpos mollis    Creeping snowberry,  Trailing snowberry
native
Shrub

CAPRIFOLIACEAE

Symphoricarpos mollis
© 2019 Ron Vanderhoff
Symphoricarpos mollis
© 2020 Cara Wilcox
Symphoricarpos mollis
© 2019 Ron Vanderhoff

Symphyotrichum chilense    California aster,  Pacific aster
native
Perennial herb

ASTERACEAE

Symphyotrichum chilense
© 2020 Suzanne L. Weakley
Symphyotrichum chilense
© 2013 Arcangelo Wessells
Symphyotrichum chilense
© 2018 Stacie Wolny

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

ASTERACEAE

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

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

Thysanocarpus laciniatus    Common lace pod,  Mountain fringepod,  Narrow leaved fringe pod
native
Annual herb

BRASSICACEAE

Thysanocarpus laciniatus
© 2021 Helen Hancock
Thysanocarpus laciniatus
© 2021 R.A. Chasey
Thysanocarpus laciniatus
© 2021 Helen Hancock

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

Torilis nodosa    Hedge parsley,  Knotted hedge parsley,  Knotted hedgeparsley
non-native
Annual herb

APIACEAE

Torilis nodosa
© 2011 Steve Matson
Torilis nodosa
© 2011 Steve Matson
Torilis nodosa
© 2011 Steve Matson

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

Tragopogon porrifolius    Purple salsify
non-native
Perennial herb

ASTERACEAE

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

Trifolium barbigerum    Bearded clover
native
Annual herb

FABACEAE

Trifolium barbigerum
© 2023 R.A. Chasey
Trifolium barbigerum
© 2010 Toni Corelli
Trifolium barbigerum
© 2017 Toni Corelli

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

FABACEAE

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

Trifolium 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 incarnatum    Crimson clover
non-native
Annual herb

FABACEAE

Trifolium incarnatum
© 2008 Steve Matson
Trifolium incarnatum
© 2008 Steve Matson
Trifolium incarnatum
© 2008 Steve Matson

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

FABACEAE

Trifolium subterraneum
© 2008 Steve Matson
Trifolium subterraneum
© 2008 Steve Matson
Trifolium subterraneum
© 2017 Steve Matson

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

FABACEAE

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

Trifolium willdenovii    Tomcat clover
native
Annual herb

FABACEAE

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

Trifolium wormskioldii    Coast clover,  Cow clover,  Cows clover
native
Perennial herb

FABACEAE

Trifolium wormskioldii
© 2003 Steve Matson
Trifolium wormskioldii
© 2003 Steve Matson
Trifolium wormskioldii
© 2003 Steve Matson

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

OROBANCHACEAE

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

Tropaeolum majus    Garden nasturtium,  Nasturtium
invasive non-native
Annual herb, Vine

TROPAEOLACEAE

Tropaeolum majus
© 2021 Julie A. Kierstead
Tropaeolum majus
© 2024 Mike Russler
Tropaeolum majus
© 2022 Ron Vanderhoff

Typha domingensis    Narrowleaf cattail,  Southern cattail
native
Perennial herb

TYPHACEAE

Typha domingensis
© 2020 Ron Vanderhoff
Typha domingensis
© 2020 Ron Vanderhoff
Typha domingensis
© 2023 Ron Vanderhoff

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

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

URTICACEAE

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

Verbascum thapsus    Common mullein,  Woolly mullein
invasive non-native
Perennial herb

SCROPHULARIACEAE

Verbascum thapsus
© 2021 R.A. Chasey
Verbascum thapsus
© 2020 Kim Cabrera
Verbascum thapsus
© 2019 Marisa Persaud

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

Veronica anagallis-aquatica    Water speedwell
non-native
Perennial herb

PLANTAGINACEAE

Veronica anagallis-aquatica
© 2015 Steve Matson
Veronica anagallis-aquatica
© 2015 Steve Matson
Veronica anagallis-aquatica
© 2022 Bob Sweatt

Vicia americana ssp. americana    American vetch
native
Perennial herb, Vine

FABACEAE

Vicia americana ssp. americana
© 2008 Steve Matson
Vicia americana ssp. americana
© 2008 Steve Matson
Vicia americana ssp. americana
© 2008 Steve Matson

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

FABACEAE

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

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

FABACEAE

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

Vinca major    Bigleaf periwinkle,  Greater periwinkle,  Vinca
invasive non-native
Perennial herb

APOCYNACEAE

Vinca major
© 2020 Julia Markey
Vinca major
© 2022 Ron Vanderhoff
Vinca major
© 2021 Ron Vanderhoff

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

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

ASTERACEAE

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

Xanthium strumarium    Rough cockleburr
native
Annual herb

ASTERACEAE

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

Yabea microcarpa    California hedge parsley,  False carrot
native
Annual herb

APIACEAE

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

Zannichellia palustris    Horned pondweed
native
Perennial herb

ZANNICHELLIACEAE

Zannichellia palustris
© 2021 Ron Vanderhoff
Zannichellia palustris
© 2021 Ron Vanderhoff
Zannichellia palustris
© 2021 Ron Vanderhoff

Zeltnera muehlenbergii    Muehlenberg's centaury
native
Annual herb

GENTIANACEAE

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