logo Calflora  Illustrated Plant List 
Laguna Lake Park and Open Space
San Luis Obispo County

David Keil  / CNPS-SLO  (2019-06-07)

Record Detail Nearby Surveys What Grows Here?
352 PLANTS
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

Acmispon brachycarpus    hill lotus
native
Annual herb

FABACEAE

Acmispon brachycarpus
2005 Steve Matson
Acmispon brachycarpus
2005 Steve Matson
Acmispon brachycarpus
2018 Steve Matson

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

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

Alisma triviale    Northern water plantain
native
Perennial herb (aquatic)

ALISMATACEAE

Alisma triviale
2023 Ken-ichi Ueda
Alisma triviale
2022 R.A. Chasey
Alisma triviale
2019 Gena Bentall

native
Perennial herb (bulb)

ALLIACEAE

Allium lacunosum var. lacunosum
2016 Steve Matson
Allium lacunosum var. lacunosum
2016 Steve Matson
Allium lacunosum var. lacunosum
2016 Steve Matson

Amaranthus albus    Pigweed amaranth,  Tumbleweed
non-native
Annual herb

AMARANTHACEAE

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

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

AMARANTHACEAE

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

Amaranthus deflexus    Amaranth,  Large fruited amaranth,  Largefruit amaranth
non-native
Annual herb

AMARANTHACEAE

Amaranthus deflexus
2018 Ron Vanderhoff
Amaranthus deflexus
2018 Ron Vanderhoff
Amaranthus deflexus
2018 Ron Vanderhoff

Amaranthus hybridus    Slender pigweed,  Slim amaranth
non-native
Annual herb

AMARANTHACEAE

Amaranthus hybridus
2016 Jean Pawek
Amaranthus hybridus
2016 Jean Pawek
Amaranthus hybridus
2016 Jean Pawek

Amaranthus powellii    Powell's amaranth
native
Annual herb

AMARANTHACEAE

Amaranthus powellii
2022 Donald Burk
Amaranthus powellii
2019 David popp
Amaranthus powellii
2015 Keir Morse

Ambrosia acanthicarpa    Annual bursage,  Annual burweed
native
Annual herb

ASTERACEAE

Ambrosia acanthicarpa
2009 Steve Matson
Ambrosia acanthicarpa
2009 Steve Matson
Ambrosia acanthicarpa
2013 Steve Matson

Ambrosia psilostachya    Ragweed,  Western ragweed
native
Perennial herb

ASTERACEAE

Ambrosia psilostachya
2021 Mary Ann Machi
Ambrosia psilostachya
2022 Ron Vanderhoff
Ambrosia psilostachya
2022 Ron Vanderhoff

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

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

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
2018 Ron Vanderhoff
Asclepias fascicularis
2014 Steve Matson
Asclepias fascicularis
2019 Ron Vanderhoff

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

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

BRASSICACEAE

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

Atriplex prostrata    Fat-hen
non-native
Annual herb

CHENOPODIACEAE

Atriplex prostrata
2015 Alice Cummings
Atriplex prostrata
2023 Ron Vanderhoff
Atriplex prostrata
2018 Ron Vanderhoff

Atriplex semibaccata    Australian saltbush
invasive non-native
Perennial herb

CHENOPODIACEAE

Atriplex semibaccata
2015 James Bailey
Atriplex semibaccata
2021 David Wolfson
Atriplex semibaccata
2020 Ron Vanderhoff

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 Ron Vanderhoff

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

AZOLLACEAE

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

Baccharis pilularis    Coyote brush,  Dwarf chaparral broom
native
Shrub

ASTERACEAE

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

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

Bidens pilosa    Hairy beggarticks
non-native
Annual herb

ASTERACEAE

Bidens pilosa
2021 Ron Vanderhoff
Bidens pilosa
2018 Ron Vanderhoff
Bidens pilosa
2020 David Wolfson

Bloomeria crocea var. aurea    Common goldenstar
native
Perennial herb

THEMIDACEAE

Bloomeria crocea var. aurea
2019 David Greenberger
Bloomeria crocea var. aurea
2020 Kimberly Coates
Bloomeria crocea var. aurea
2018 Gary McDonald

native
Perennial grasslike herb

CYPERACEAE

Bolboschoenus maritimus ssp. paludosus
2022 R.A. Chasey
Bolboschoenus maritimus ssp. paludosus
2020 R.A. Chasey
Bolboschoenus maritimus ssp. paludosus
2020 Alice Cummings

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

non-native
Annual, Perennial grass

POACEAE

Bromus catharticus var. catharticus
2019 John Rawlings
Bromus catharticus var. catharticus
2023 Jacob Smith
Bromus catharticus var. catharticus
2023 Jacob Smith

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 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 [Calandrinia ciliata]    Small Tree-Mallow


Calibrachoa parviflora    Wild petunia
native
Annual herb

SOLANACEAE

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

Calochortus argillosus    Clay mariposa lily
native
Perennial herb (bulb)

LILIACEAE

Calochortus argillosus
2016 Daniel Neal
Calochortus argillosus
2022 Suzanne L. Weakley
Calochortus argillosus
2022 Suzanne L. Weakley

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

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 praegracilis    Clustered field sedge,  Field sedge
native
Perennial grasslike herb

CYPERACEAE

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

Carex 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

Carpobrotus edulis    Hottentot fig,  Iceplant,  Sea fig
invasive non-native
Perennial herb

AIZOACEAE

Carpobrotus edulis
2021 Michelle Karle
Carpobrotus edulis
2017 Lisa Miller
Carpobrotus edulis
2018 Cynthia Powell

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

OROBANCHACEAE

Castilleja densiflora ssp. obispoensis
2011 CNPS, San Luis Obispo Chapter
Castilleja densiflora ssp. obispoensis
2011 Chris Winchell

Castilleja minor ssp. spiralis    Lesser indian paintbrush,  Lesser paintbrush
native
Annual herb

OROBANCHACEAE

Castilleja minor ssp. spiralis
2023 Rhonda Allen
Castilleja minor ssp. spiralis
2019 Ron Vanderhoff
Castilleja minor ssp. spiralis
2019 Matt Berger

Cenchrus clandestinus    Kikuyu grass,  Kikuyugrass
invasive non-native
Perennial grass

POACEAE

Cenchrus clandestinus
2020 Ron Vanderhoff
Cenchrus clandestinus
2020 Ron Vanderhoff
Cenchrus clandestinus
2017 Josh Nuzzo

Cenchrus longisetus    Feathertop
invasive non-native
Perennial grass

POACEAE

Cenchrus longisetus
2018 Ron Vanderhoff
Cenchrus longisetus
2023 Ron Vanderhoff
Cenchrus longisetus
2021 Julian Geoghegan

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

Centromadia parryi ssp. congdonii    Congdon's tarplant
rare native
Annual herb

ASTERACEAE

Centromadia parryi ssp. congdonii
2013 Toni Corelli
Centromadia parryi ssp. congdonii
2023 Jordan Collins
Centromadia parryi ssp. congdonii
2021 Michele Hammond

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

CARYOPHYLLACEAE

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

Chenopodiastrum murale [Chenopodium 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. 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

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

Chorizanthe palmeri    Palmer's spineflower
rare native
Annual herb

POLYGONACEAE

Chorizanthe palmeri
2019 David Greenberger
Chorizanthe palmeri
2012 Terrence Gosliner
Chorizanthe palmeri
2023 Mike Russler

Cichorium intybus    Chicory
non-native
Perennial herb

ASTERACEAE

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

Cirsium fontinale var. obispoense    Chorro creek bog thistle
rare native
Perennial herb

ASTERACEAE

Cirsium fontinale var. obispoense
2017 Cindy Roessler
Cirsium fontinale var. obispoense
2015 David Wolfson
Cirsium fontinale var. obispoense
2020 David Greenberger

Cirsium vulgare    Bull thistle
invasive non-native
Perennial herb

ASTERACEAE

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

Claytonia perfoliata 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

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

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

CONVOLVULACEAE

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

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

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

ASTERACEAE

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

Crassula 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

Croton setiger    Turkey-mullein
native
Annual herb

EUPHORBIACEAE

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

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

POACEAE

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

Cryptantha clevelandii var. florosa    Coastal cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha clevelandii var. florosa
2020 David Greenberger
Cryptantha clevelandii var. florosa
2020 Ryan Carle
Cryptantha clevelandii var. florosa
2023 Ken-ichi Ueda

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 campestris    Field dodder
native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta campestris
2017 Ron Vanderhoff
Cuscuta campestris
2017 Ron Vanderhoff
Cuscuta campestris
2022 Brad Cook

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

CYPERACEAE

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

Danthonia californica    California oatgrass
native
Perennial grass

POACEAE

Danthonia californica
2020 Sara Timby
Danthonia californica
2007 Steve Matson
Danthonia californica
2002 Bart and Susan Eisenberg

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

Deinandra fasciculata    Clustered tarweed
native
Annual herb

ASTERACEAE

Deinandra fasciculata
2022 David Strauch
Deinandra fasciculata
2017 Steve Matson
Deinandra fasciculata
2017 Steve Matson

Deinandra increscens ssp. increscens    Grassland tarweed
native
Annual herb

ASTERACEAE

Deinandra increscens ssp. increscens
2011 George Williams
Deinandra increscens ssp. increscens
2003 Lynn Watson

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

Deschampsia danthonioides    Annual hairgrass
native
Annual grass

POACEAE

Deschampsia danthonioides
2019 Paul Aigner
Deschampsia danthonioides
2003 Steve Matson
Deschampsia danthonioides
2018 Emily Allen

Dichondra micrantha    Asian ponysfoot
non-native
Perennial herb

CONVOLVULACEAE

Dichondra micrantha
2023 Ron Vanderhoff
Dichondra micrantha
2012 Dean Wm. Taylor, Ph.D.
Dichondra micrantha
2012 Dean Wm. Taylor, Ph.D.

Digitaria sanguinalis    Hairy crabgrass
non-native
Annual grass

POACEAE

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

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. [Dichelostemma capitatum ssp. capitatum]
2023 Steve Matson
Dipterostemon capitatus ssp. capitatus. [Dichelostemma capitatum ssp. capitatum]
2023 Steve Matson
Dipterostemon capitatus ssp. capitatus. [Dichelostemma capitatum ssp. capitatum]
2022 Steve Matson

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

POACEAE

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

Dittrichia graveolens    Stinkwort
invasive non-native
Annual herb

ASTERACEAE

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

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

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

Echinochloa colona    Jungle rice
non-native
Annual grass

POACEAE

Echinochloa colona
2018 Ron Vanderhoff
Echinochloa colona
2018 Ron Vanderhoff
Echinochloa colona
2018 Ron Vanderhoff

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

POACEAE

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

Eichhornia crassipes    Common water hyacinth
invasive non-native
Perennial herb

PONTEDERIACEAE

Eichhornia crassipes
2015 Judy and Barry Breckling
Eichhornia crassipes
2018 Rachelle Gray
Eichhornia crassipes
2020 Ron Vanderhoff

Elatine californica    California waterwort
native
Annual, Perennial herb

ELATINACEAE

Elatine californica
2023 Keir Morse
Elatine californica
Mary Ann Hannon
Elatine californica
2015 Vernon Smith

Eleocharis bella    Beautiful spikerush
native
Perennial grasslike herb

CYPERACEAE

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

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

CYPERACEAE

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

Eleocharis parishii    Parish's spike rush,  Parish's spikerush
native
Perennial grasslike herb

CYPERACEAE

Eleocharis parishii
2014 Steve Matson
Eleocharis parishii
2014 Steve Matson
Eleocharis parishii
2018 Rachelle Gray

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

Elymus xhansenii [E. glaucus x E. multisetus]    Small Tree-Mallow


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

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

ONAGRACEAE

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

Epilobium densiflorum    Dense boisduvalia,  Dense flowered boisduvalia,  Dense flowered spike primrose
native
Annual herb

ONAGRACEAE

Epilobium densiflorum
2009 BOB CASE
Epilobium densiflorum
2021 Mike Russler
Epilobium densiflorum
2022 Ken-ichi Ueda

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
2013 Michael Mitchell

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 cilianensis    Stinkgrass
non-native
Annual grass

POACEAE

Eragrostis cilianensis
2021 Donald Burk
Eragrostis cilianensis
2012 Keir Morse
Eragrostis cilianensis
2021 Donald Burk

native
Annual grass

POACEAE

Eragrostis pectinacea var. pectinacea
2007 Steve Matson
Eragrostis pectinacea var. pectinacea
2007 Steve Matson
Eragrostis pectinacea var. pectinacea
2007 Steve Matson

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

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

ASTERACEAE

Eriophyllum confertiflorum var. confertiflorum
2013 James Gonsman
Eriophyllum confertiflorum var. confertiflorum
2020 Mary Conway
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 brachycarpum    Foothill filaree,  Short fruited filaree,  Shortfruit stork's bill
invasive non-native
Annual herb

GERANIACEAE

Erodium brachycarpum
2016 Bob van Duinen
Erodium brachycarpum
2020 Angelique Herman
Erodium brachycarpum
2016 Steve Matson

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

GERANIACEAE

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

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

GERANIACEAE

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

Eryngium aristulatum var. hooveri    Hoover's button celery,  Hoover's eryngo
rare native
Annual, Perennial herb

APIACEAE

Eryngium aristulatum var. hooveri
2011 Aaron Arthur
Eryngium aristulatum var. hooveri
2014 Maya Goklany
Eryngium aristulatum var. hooveri
2010 Chris Winchell

Eryngium armatum    Coastal eryngo,  Coyote thistle,  Prickly coyote thistle
native
Perennial herb

APIACEAE

Eryngium armatum
2006 Steve Matson
Eryngium armatum
2006 Steve Matson
Eryngium armatum
2015 Tim Miller

native
Annual herb

PHRYMACEAE


native
Perennial

PHRYMACEAE

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

Erythranthe microphylla    Small leaved monkeyflower
rare native
Annual herb

PHRYMACEAE

Erythranthe microphylla
2019 Susan McDougall
Erythranthe microphylla
2021 Robert Steers
Erythranthe microphylla
2021 Robert Steers

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

Euphorbia maculata    Spotted spurge
non-native
Annual herb

EUPHORBIACEAE

Euphorbia maculata
2019 B.J. Dion
Euphorbia maculata
2019 B.J. Dion
Euphorbia maculata
2022 Ron Vanderhoff

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 serpens    Matted sandmat
non-native
Annual herb

EUPHORBIACEAE

Euphorbia serpens
2019 B.J. Dion
Euphorbia serpens
2018 Ron Vanderhoff
Euphorbia serpens
2020 Ron Vanderhoff

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

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

POACEAE

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

Festuca bromoides    Brome fescue
non-native
Annual grass

POACEAE

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

Festuca microstachys    Small fescue
native
Annual grass

POACEAE

Festuca microstachys
2022 Aaron Sunshine
Festuca microstachys
2011 Steve Matson
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

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 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

Genista monspessulana    French broom
invasive non-native
Shrub

FABACEAE

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

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

GERANIACEAE

Geranium dissectum
2021 Al Keuter
Geranium dissectum
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

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
2012 Michael Perlmutter
Hedypnois rhagadioloides
2022 Steve Matson
Hedypnois rhagadioloides
2022 Steve Matson

Helenium bigelovii    Bigelow's sneezeweed,  Sneezeweed
native
Perennial herb

ASTERACEAE

Helenium bigelovii
2020 Rebecca Schoenenberger
Helenium bigelovii
2019 Bryant Baker
Helenium bigelovii
2019 Bob Sweatt

Heliotropium curassavicum var. oculatum    Alkali heliotrope,  Seaside heliotrope
native
Perennial herb

HELIOTROPIACEAE

Heliotropium curassavicum var. oculatum
2019 Rachelle Gray
Heliotropium curassavicum var. oculatum
2018 Ron Vanderhoff
Heliotropium curassavicum var. oculatum
2019 Ron Vanderhoff

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

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

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

native
Perennial grass

POACEAE

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

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

POACEAE

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

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

POACEAE

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

Hydrocotyle verticillata    Whorled marsh pennywort,  Whorled marshpennywort
native
Perennial herb

ARALIACEAE

Hydrocotyle verticillata
2013 Ron Vanderhoff
Hydrocotyle verticillata
2020 Robert Byrnes
Hydrocotyle verticillata
2019 David Greenberger

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

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 lescurii    Dune rush
native
Perennial grasslike herb

JUNCACEAE

Juncus lescurii
2008 Toni Corelli
Juncus lescurii
2008 Toni Corelli
Juncus lescurii
2008 Toni Corelli

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

JUNCACEAE

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

Juncus 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
2019 Ken Hickman
Juncus phaeocephalus var. phaeocephalus
2019 John Rawlings

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

PLANTAGINACEAE

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

Koeleria macrantha    June grass,  Prairie junegrass
native
Perennial grass

POACEAE

Koeleria macrantha
2023 Helen Hancock
Koeleria macrantha
2015 Steve Matson
Koeleria macrantha
2015 Steve Matson

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

ASTERACEAE

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

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

Laennecia coulteri    Coulter's horseweed
native
Annual herb

ASTERACEAE

Laennecia coulteri
2012 Steve Matson
Laennecia coulteri
2012 Steve Matson
Laennecia coulteri
2012 Steve Matson

Lagophylla ramosissima    Branched lagophylla,  Common hareleaf
native
Annual herb

ASTERACEAE

Lagophylla ramosissima
2019 Diane Etchison
Lagophylla ramosissima
2021 Dee Shea Himes
Lagophylla ramosissima
2020 Ken Hickman

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 glaberrima    Smooth goldfields
native
Annual herb

ASTERACEAE

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

Lasthenia gracilis    Needle goldfields
native
Annual herb

ASTERACEAE

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

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

FABACEAE

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

Lathyrus odoratus    Common sweet pea,  Garden sweet pea,  Sweetpea
non-native
Annual herb

FABACEAE

Lathyrus odoratus
2017 danielle noe
Lathyrus odoratus
2022 Ron Vanderhoff
Lathyrus odoratus
2022 Ron Vanderhoff

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

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 pinnatifidum    Featherleaf pepperweed,  Wayside pepper grass
non-native
Annual, Perennial herb

BRASSICACEAE

Lepidium pinnatifidum
2016 Keir Morse
Lepidium pinnatifidum
1982 Robert E. Preston, Ph.D.
Lepidium pinnatifidum
2010 Zoya Akulova

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

Lobularia maritima    Sweet alyssum
invasive non-native
Perennial herb

BRASSICACEAE

Lobularia maritima
2016 Michael Mitchell
Lobularia maritima
2016 Michael Mitchell
Lobularia maritima
2019 Patrick Furtado

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
2022 Dianne Lake
Lomatium caruifolium var. caruifolium
2014 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
2019 Eliezer Margolis
Lomatium utriculatum
2015 James Gonsman

Lonicera japonica    Japanese honeysuckle
non-native
Vine, Shrub

CAPRIFOLIACEAE

Lonicera japonica
2018 michelle peruzzi
Lonicera japonica
2022 Andy Ford
Lonicera japonica
2016 Keir Morse

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

FABACEAE

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

Lupinus bicolor    Annual lupine,  Bicolored lupine,  Miniature lupine
native
Annual, Perennial herb

FABACEAE

Lupinus bicolor
2021 Ken Lunders
Lupinus bicolor
2022 Mike Russler
Lupinus bicolor
2019 Gary McDonald

Lupinus microcarpus var. densiflorus    Chick lupine,  Dense flowered platycarpos,  Whitewhorl lupine
native
Annual herb

FABACEAE

Lupinus microcarpus var. densiflorus
2014 Steve Matson
Lupinus microcarpus var. densiflorus
2014 Steve Matson
Lupinus microcarpus var. densiflorus
2014 Steve Matson

Lupinus nanus    Sky lupine
native
Annual herb

FABACEAE

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

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

Lythrum californicum    California loosestrife,  Common loosestrife
native
Perennial herb

LYTHRACEAE

Lythrum californicum
2017 Fred Melgert / Carla Hoegen
Lythrum californicum
2020 Ron Vanderhoff
Lythrum californicum
2017 David Wolfson

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

LYTHRACEAE

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

Madia 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 clevelandii    Cleveland's dandelion,  Cleveland's desertdandelion,  Cleveland's malacothrix
native
Annual herb

ASTERACEAE

Malacothrix clevelandii
2021 Steve Laymon
Malacothrix clevelandii
2022 Mike Russler
Malacothrix clevelandii
2023 R.A. Chasey

Malva nicaeensis    Bull mallow
non-native
Annual herb

MALVACEAE

Malva nicaeensis
2015 Mike Morales
Malva nicaeensis
2020 Ron Vanderhoff
Malva nicaeensis
2020 Ron Vanderhoff

Malva parviflora    Cheeseweed mallow
non-native
Annual herb

MALVACEAE

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

non-native
Annual, Biennial herb

MALVACEAE

Malva pseudolavatera
2021 Ron Vanderhoff
Malva pseudolavatera
2021 Ron Vanderhoff
Malva pseudolavatera
2021 Ron Vanderhoff

Malvella leprosa    Alkali mallow
native
Perennial herb

MALVACEAE

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

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

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

Mentha canadensis    Wild mint
native
Perennial herb

LAMIACEAE

Mentha canadensis
2023 R.A. Chasey
Mentha canadensis
2023 Suzanne L. Weakley
Mentha canadensis
2021 R.A. Chasey

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

ASTERACEAE

Microseris douglasii ssp. douglasii
2017 Steve Matson
Microseris douglasii ssp. douglasii
2017 Steve Matson
Microseris douglasii ssp. douglasii
2017 Steve Matson

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

Modiola caroliniana    Carolina bristle mallow,  Carolina bristlemallow
non-native
Perennial herb

MALVACEAE

Modiola caroliniana
2020 David Wolfson
Modiola caroliniana
2020 Asa B Spade
Modiola caroliniana
2019 Ron Vanderhoff

Nasturtium officinale    Watercress
native
Perennial herb (aquatic)

BRASSICACEAE

Nasturtium officinale
2019 Patrick Furtado
Nasturtium officinale
2019 Diane Etchison
Nasturtium officinale
2012 Steve Matson

Navarretia squarrosa    Skunkbush,  Skunkweed
native
Annual herb

POLEMONIACEAE

Navarretia squarrosa
2019 Marisa Persaud
Navarretia squarrosa
2019 Patrick Furtado
Navarretia squarrosa
2022 Suzanne L. Weakley

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

Oxybasis chenopodioides    Small Tree-Mallow


Oxybasis macrosperma    Small Tree-Mallow


Oxybasis rubra    Small Tree-Mallow


Parapholis incurva    Curved sicklegrass,  Sickle grass
non-native
Annual grass

POACEAE

Parapholis incurva
2022 R.A. Chasey
Parapholis incurva
2021 Cynthia Powell
Parapholis incurva
2022 Ron Vanderhoff

Paspalum dilatatum    Dallis grass,  Dallisgrass
non-native
Perennial grass

POACEAE

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

Paspalum distichum    Knot grass,  Knotgrass
native
Perennial grass

POACEAE

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

Pellaea andromedifolia    Coffee cliffbrake,  Coffee fern
native
Fern

PTERIDACEAE

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

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 amphibia    Water smartweed
native
Perennial herb (aquatic)

POLYGONACEAE

Persicaria amphibia
2017 Ron Vanderhoff
Persicaria amphibia
2017 Ron Vanderhoff
Persicaria amphibia
2019 Diane Etchison

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 paradoxa    Hood canarygrass
non-native
Annual grass

POACEAE

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

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

VERBENACEAE

Phyla nodiflora
2018 Ron Vanderhoff
Phyla nodiflora
2009 Ron Vanderhoff
Phyla nodiflora
2022 Donald Burk

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

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
2019 Diane Etchison
Platystemon californicus
2022 John L. Thompson
Platystemon californicus
2022 John L. Thompson

Pleuropogon californicus var. californicus    Annual semaphoregrass
native
Perennial grass (rhizomatous)

POACEAE

Pleuropogon californicus var. californicus
2023 Denise Defreese
Pleuropogon californicus var. californicus
2021 Denise Defreese
Pleuropogon californicus var. californicus
2021 R.A. Chasey

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 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

Pogogyne douglasii    Douglas' mesamint,  Douglas' pogogyne
native
Annual herb

LAMIACEAE

Pogogyne douglasii
2022 Steve Matson
Pogogyne douglasii
2016 Ray Gill
Pogogyne douglasii
2022 Ramona Robison

Polycarpon depressum    California allseed,  California manyseed,  California polycarpon
native
Annual herb

CARYOPHYLLACEAE

Polycarpon depressum
2023 James Bailey
Polycarpon depressum
2023 James Bailey
Polycarpon depressum
2011 Neal Kramer

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

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

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

PORTULACACEAE

Portulaca oleracea
2022 Donald Burk
Portulaca oleracea
2022 Ron Vanderhoff
Portulaca oleracea
2020 R.A. Chasey

Potamogeton nodosus    Long leaved pondweed,  Longleaf pondweed,  Pondweed
native
Perennial herb (aquatic)

POTAMOGETONACEAE

Potamogeton nodosus
2020 Ken Hickman
Potamogeton nodosus
2019 Gena Bentall
Potamogeton nodosus
2020 Ken Hickman

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 [Dodecatheon clevelandii]    Small Tree-Mallow


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

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 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

Ranunculus californicus    California buttercup
native
Perennial herb

RANUNCULACEAE

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

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

BRASSICACEAE

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

Rhaponticum repens    Russian knapweed
non-native
Perennial herb

ASTERACEAE

Rhaponticum repens
2017 Barbara Boethling
Rhaponticum repens
2014 Steve Matson
Rhaponticum repens
2017 Barbara Boethling

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

Rorippa palustris ssp. palustris    Bog yellowcress
native
Annual, Perennial herb

BRASSICACEAE

Rorippa palustris ssp. palustris
2017 Ron Vanderhoff
Rorippa palustris ssp. palustris
2017 Ron Vanderhoff
Rorippa palustris ssp. palustris
2018 Ron Vanderhoff

Rubus ursinus    California blackberry,  Pacific blackberry
native
Vine, Shrub

ROSACEAE

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

Rumex acetosella    Common sheep sorrel
invasive non-native
Perennial herb

POLYGONACEAE

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

Rumex 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 kerneri    Kerner's dock
non-native
Perennial herb

POLYGONACEAE

Rumex kerneri
2024 Donald Burk
Rumex kerneri
2023 Donald Burk
Rumex kerneri
2024 Donald Burk

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

POLYGONACEAE

Rumex salicifolius var. salicifolius
2023 Ron Vanderhoff
Rumex salicifolius var. salicifolius
2012 Gary McDonald
Rumex salicifolius var. salicifolius
2012 Gary McDonald

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 lasiandra var. lasiandra    Pacific willow
native
Tree

SALICACEAE

Salix lasiandra var. lasiandra
2021 Alice Cummings
Salix lasiandra var. lasiandra
2021 Diane Renshaw
Salix lasiandra var. lasiandra
2021 Ken Hickman

Salix lasiolepis    Arroyo willow
native
Tree, Shrub

SALICACEAE

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

Salsola tragus    Prickly russian thistle,  Russianthistle,  Tumbleweed
invasive non-native
Annual herb

CHENOPODIACEAE

Salsola tragus
2017 Ron Vanderhoff
Salsola tragus
2018 Angelique Herman
Salsola tragus
2023 Cynthia Powell

Salvia columbariae    Chia sage
native
Annual herb

LAMIACEAE

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

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

APIACEAE

Sanicula arguta
2022 Ron Vanderhoff
Sanicula arguta
2017 Diane Etchison
Sanicula arguta
2006 Steve Matson

Sanicula maritima    Adobe sanicle,  Adobe snakeroot
rare native
Perennial herb

APIACEAE

Sanicula maritima
2019 David Wolfson
Sanicula maritima
2021 Kristen Nelson
Sanicula maritima
2021 Kristen Nelson

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

native
Perennial grasslike herb

CYPERACEAE

Schoenoplectus acutus var. occidentalis
2019 Steve Matson
Schoenoplectus acutus var. occidentalis
2019 Steve Matson
Schoenoplectus acutus var. occidentalis
2019 Steve Matson

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

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 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

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

CARYOPHYLLACEAE

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

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

ASTERACEAE

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

Sisyrinchium bellum    Western blue eyed grass
native
Perennial herb

IRIDACEAE

Sisyrinchium bellum
2020 Mary Conway
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 nigrum    Black nightshade
non-native
Annual herb

SOLANACEAE

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

Solanum rostratum    Buffalo berry,  Buffalobur nightshade
non-native
Annual herb

SOLANACEAE

Solanum rostratum
2016 Ron Vanderhoff
Solanum rostratum
2021 Timothy Blank
Solanum rostratum
2019 Ron Vanderhoff

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 bicolor    Sorghum
non-native
Annual grass

POACEAE

Sorghum bicolor
2014 Ron Vanderhoff
Sorghum bicolor
2021 Keir Morse
Sorghum bicolor
2017 Fred Melgert / Carla Hoegen

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 bocconi    Boccone's sand spurry
non-native
Annual herb

CARYOPHYLLACEAE

Spergularia bocconi
2021 Ron Vanderhoff
Spergularia bocconi
2021 Ron Vanderhoff
Spergularia bocconi
2019 Ron Vanderhoff

Spergularia macrotheca var. macrotheca    Sand spurrey,  Sticky sand spurry,  Sticky sandspurry
native
Perennial herb

CARYOPHYLLACEAE

Spergularia macrotheca var. macrotheca
2008 Steve Matson

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

Sporobolus indicus    Smut grass,  Smutgrass
non-native
Perennial grass

POACEAE

Sporobolus indicus
2019 Ron Vanderhoff
Sporobolus indicus
2022 Donald Burk
Sporobolus indicus
2022 Donald Burk

Stachys ajugoides    Ajuga hedge nettle,  Bugle hedgenettle,  Hedge nettle
native
Perennial herb

LAMIACEAE

Stachys ajugoides
2021 Mike Russler
Stachys ajugoides
2014 James Gonsman
Stachys ajugoides
2023 Mike Russler

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

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

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


Stuckenia pectinata    Sago pondweed
native
Perennial herb (aquatic)

POTAMOGETONACEAE

Stuckenia pectinata
2021 Ron Vanderhoff
Stuckenia pectinata
2021 Ron Vanderhoff
Stuckenia pectinata
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 subulatum    Eastern annual saltmarsh aster
native
Annual herb

ASTERACEAE

Symphyotrichum subulatum
2019 Ron Vanderhoff
Symphyotrichum subulatum
2018 Ron Vanderhoff
Symphyotrichum subulatum
2018 Ron Vanderhoff

Tamarix ramosissima    Saltcedar,  Tamarisk
invasive non-native
Tree, Shrub

TAMARICACEAE

Tamarix ramosissima
2020 Ron Vanderhoff
Tamarix ramosissima
2017 Barbara Boethling
Tamarix ramosissima
2022 Ron Vanderhoff

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

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

Tragopogon porrifolius    Purple salsify
non-native
Perennial herb

ASTERACEAE

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

Tribulus terrestris    Puncture vine,  Puncturevine
invasive non-native
Annual herb

ZYGOPHYLLACEAE

Tribulus terrestris
2015 Steve Matson
Tribulus terrestris
2020 Ron Vanderhoff
Tribulus terrestris
2020 Maura Hay

Trifolium albopurpureum    Indian clover,  Rancheria clover
native
Annual herb

FABACEAE

Trifolium albopurpureum
2023 Mary Gerbic
Trifolium albopurpureum
2023 Mary Gerbic
Trifolium albopurpureum
2021 Mike Russler

Trifolium bifidum var. decipiens    Notch leaf clover
native
Annual herb

FABACEAE

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

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 fragiferum    Strawberry clover
non-native
Perennial herb

FABACEAE

Trifolium fragiferum
2020 Ron Vanderhoff
Trifolium fragiferum
2020 Ron Vanderhoff
Trifolium fragiferum
2022 Dana York

Trifolium fucatum    Bull clover,  Sour clover
native
Annual herb

FABACEAE

Trifolium fucatum
2014 Steve Matson
Trifolium fucatum
2014 Steve Matson
Trifolium fucatum
2020 Paul Aigner

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 hydrophilum    Saline clover
rare native
Annual herb

FABACEAE

Trifolium hydrophilum
2005 Dean Wm. Taylor
Trifolium hydrophilum
2005 Aaron Schusteff
Trifolium hydrophilum
2005 Aaron Schusteff

Trifolium microcephalum    Hairy clover,  Small headed clover
native
Annual herb

FABACEAE

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

Trifolium microdon    Thimble clover,  Valparaiso clover
native
Annual herb

FABACEAE

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

Trifolium pratense    Red clover
non-native
Perennial herb

FABACEAE

Trifolium pratense
2019 David Greenberger
Trifolium pratense
2021 Bob Sweatt
Trifolium pratense
2023 R.A. Chasey

Trifolium repens    White clover
non-native
Perennial herb

FABACEAE

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

Trifolium 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
2019 Ron Vanderhoff
Trifolium willdenovii
2019 Ron Vanderhoff
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

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

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

URTICACEAE

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

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

FABACEAE

Vicia benghalensis
2019 Diane Etchison
Vicia benghalensis
2018 MCOSD EDRR
Vicia benghalensis
2020 Ron Vanderhoff

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

FABACEAE

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

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

FABACEAE

Vicia villosa ssp. varia
2006 Steve Matson

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

Zeltnera muehlenbergii    Muehlenberg's centaury
native
Annual herb

GENTIANACEAE

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