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Cottonwood Pass
Cottonwood Pass: Southern Diablo Range along Highway 41 corridor, northeastern corner of San Luis Obispo County

San Luis Obispo County

David Keil  / CNPS-SLO  (2019-06-09)

Record Detail Nearby Surveys What Grows Here?
204 PLANTS
Achillea millefolium    Common yarrow
native
Perennial herb

ASTERACEAE

Achillea millefolium
2022 Andy Ford
Achillea millefolium
2014 James Gonsman
Achillea millefolium
2023 Ron Vanderhoff

Achyrachaena mollis    Blow-Wives
native
Annual herb

ASTERACEAE

Achyrachaena mollis
2015 Diane Etchison
Achyrachaena mollis
2019 Deanna Wargowski
Achyrachaena mollis
2021 Cynthia Powell

Acmispon brachycarpus    hill lotus
native
Annual herb

FABACEAE

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

Acmispon wrangelianus    Wrangel lotus
native
Annual herb

FABACEAE

Acmispon wrangelianus
2021 Jamie Spielmann
Acmispon wrangelianus
2018 Gary McDonald
Acmispon wrangelianus
2022 Richard Sullivan

Allium crispum    Crinkled onion
native
Perennial herb (bulb)

ALLIACEAE

Allium crispum
2023 Bryant Baker
Allium crispum
2017 Joe Engelbrecht
Allium crispum
2012 Gary McDonald

Allium howellii var. howellii    Howell's onion
rare native
Perennial herb (bulb)

ALLIACEAE

Allium howellii var. howellii
2023 R.A. Chasey
Allium howellii var. howellii
2019 Matt Berger
Allium howellii var. howellii
2019 Matt Berger

Allophyllum gilioides ssp. gilioides    Dense false gilia,  Dense false gilyflower
native
Annual herb

POLEMONIACEAE

Allophyllum gilioides ssp. gilioides
2019 Matt Berger
Allophyllum gilioides ssp. gilioides
2021 Helen Hancock
Allophyllum gilioides ssp. gilioides
2019 Matt Berger

Amsinckia intermedia    Common fiddleneck
native
Annual herb

BORAGINACEAE

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

Amsinckia lycopsoides    Bugloss fiddleneck,  Tarweed fiddleneck
native
Annual herb

BORAGINACEAE

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

Amsinckia tessellata var. gloriosa    Bristly fiddleneck,  Large flowered devil's fiddleneck
native
Annual herb

BORAGINACEAE

Amsinckia tessellata var. gloriosa
2018 Richard Spjut
Amsinckia tessellata var. gloriosa
2019 Susan McDougall
Amsinckia tessellata var. gloriosa
2020 Angelique Herman

Amsinckia tessellata var. tessellata    Bristly fiddleneck,  Devil's lettuce
native
Annual herb

BORAGINACEAE

Amsinckia tessellata var. tessellata
2008 Keir Morse
Amsinckia tessellata var. tessellata
2008 Keir Morse
Amsinckia tessellata var. tessellata
2008 Keir Morse

Ancistrocarphus filagineus    False neststraw,  Woolly fishhooks
native
Annual herb

ASTERACEAE

Ancistrocarphus filagineus
2020 Matt Berger
Ancistrocarphus filagineus
2019 Gerald Carr
Ancistrocarphus filagineus
2021 Jacob Smith

Androsace elongata ssp. acuta    California androsace,  California rockjasmine
rare native
Annual herb

PRIMULACEAE

Androsace elongata ssp. acuta
2023 Helen Hancock
Androsace elongata ssp. acuta
2022 Catherine Chang
Androsace elongata ssp. acuta
2022 R.A. Chasey

Antirrhinum ovatum    Oval leaved snapdragon
rare native
Annual herb

PLANTAGINACEAE

Antirrhinum ovatum
2013 Chris Winchell
Antirrhinum ovatum
2013 Chris Winchell
Antirrhinum ovatum
2022 Mike Russler

Aphyllon californicum ssp. condensum    California broomrape
native
Perennial herb (parasitic)

OROBANCHACEAE


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

Astragalus asymmetricus    San joaquin milk vetch,  San joaquin milkvetch
native
Perennial herb

FABACEAE

Astragalus asymmetricus
2020 Susan McDougall
Astragalus asymmetricus
2020 Susan McDougall
Astragalus asymmetricus
2023 Catherine Chang

Astragalus didymocarpus var. didymocarpus    Common dwarf milkvetch,  Dwarf white milkvetch,  Two seeded milk vetch
native
Annual herb

FABACEAE

Astragalus didymocarpus var. didymocarpus
2016 Steve Matson
Astragalus didymocarpus var. didymocarpus
2016 Steve Matson
Astragalus didymocarpus var. didymocarpus
2016 Steve Matson

Astragalus douglasii var. douglasii    Douglas's milkvetch
native
Perennial herb

FABACEAE

Astragalus douglasii var. douglasii
2019 Diane Etchison
Astragalus douglasii var. douglasii
2016 Steve Matson
Astragalus douglasii var. douglasii
2016 Steve Matson

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

FABACEAE

Astragalus gambelianus
2020 Ron Vanderhoff
Astragalus gambelianus
2019 Ron Vanderhoff
Astragalus gambelianus
2022 Mike Russler

Astragalus oxyphysus    Stanislaus milkvetch
native
Perennial herb

FABACEAE

Astragalus oxyphysus
2020 David Greenberger
Astragalus oxyphysus
2016 Steve Matson
Astragalus oxyphysus
2016 Steve Matson

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

BRASSICACEAE

Athysanus pusillus
2021 Paul Aigner
Athysanus pusillus
2008 Steve Matson
Athysanus pusillus
2022 Catherine Chang

rare native
Annual herb

CHENOPODIACEAE

Atriplex coronata var. coronata
2023 R.A. Chasey
Atriplex coronata var. coronata
2023 Cynthia Powell
Atriplex coronata var. coronata
2021 Cynthia Powell

Atriplex fruticulosa    Ball saltbush,  Valley saltbush
native
Perennial herb

CHENOPODIACEAE

Atriplex fruticulosa
2023 R.A. Chasey
Atriplex fruticulosa
2017 Adam Chasey
Atriplex fruticulosa
2021 Cynthia Powell

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

Bowlesia incana    Hoary bowlesia
native
Annual herb

APIACEAE

Bowlesia incana
2019 Diane Renshaw
Bowlesia incana
2019 Diane Renshaw
Bowlesia incana
2017 Gary McDonald

Bromus arizonicus    Arizona brome
native
Annual grass

POACEAE

Bromus arizonicus
2006 Steve Matson
Bromus arizonicus
Ian Cain
Bromus arizonicus
2017 Neil Uelman

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 madritensis    Foxtail chess, foxtail brome,  Madrid brome,  Spanish brome
non-native
Annual grass

POACEAE

Bromus madritensis
2022 Steve Matson
Bromus madritensis
2020 Hailey Laskey
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
2019 Ron Vanderhoff
Calandrinia menziesii
2019 Ron Vanderhoff
Calandrinia menziesii
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

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 R.A. Chasey

Castilleja subinclusa var. jepsonii    Franciscan paint brush,  Longleaf indian paintbrush
native
Perennial herb

OROBANCHACEAE

Castilleja subinclusa var. jepsonii
2022 Dianne Lake
Castilleja subinclusa var. jepsonii
2022 Zoya Akulova-Barlow
Castilleja subinclusa var. jepsonii
2019 David popp

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 pungens ssp. pungens    Common tarweed
native
Annual herb

ASTERACEAE

Centromadia pungens ssp. pungens
2022 Cynthia Powell
Centromadia pungens ssp. pungens
2021 Mike Russler
Centromadia pungens ssp. pungens
2022 Cynthia Powell

Chaenactis glabriuscula var. glabriuscula    Common yellow chaenactis,  Yellow pincushion
native
Annual herb

ASTERACEAE

Chaenactis glabriuscula var. glabriuscula
2020 David Greenberger
Chaenactis glabriuscula var. glabriuscula
2020 R.A. Chasey
Chaenactis glabriuscula var. glabriuscula
2020 R.A. Chasey

Chaenactis glabriuscula var. megacephala    Big headed yellow chaenactis,  Yellow pincushion
native
Annual herb

ASTERACEAE

Chaenactis glabriuscula var. megacephala
2017 Ryan Kelly
Chaenactis glabriuscula var. megacephala
2017 Ryan Kelly
Chaenactis glabriuscula var. megacephala
2009 Barry Breckling

Chaenactis stevioides    Desert pincushion,  Esteve pincushion
native
Annual herb

ASTERACEAE

Chaenactis stevioides
2020 Mitchell Coleman
Chaenactis stevioides
2019 Matt Berger
Chaenactis stevioides
2022 Steve Matson

Chorizanthe biloba var. biloba    Two lobed spineflower,  Twolobe spineflower
native
Annual herb

POLYGONACEAE

Chorizanthe biloba var. biloba
2006 Laura Ann Eliassen
Chorizanthe biloba var. biloba
2013 Chris Winchell
Chorizanthe biloba var. biloba
2013 Chris Winchell

Chorizanthe ventricosa    Priest valley spineflower
rare native
Annual herb

POLYGONACEAE

Chorizanthe ventricosa
2014 Neal Kramer
Chorizanthe ventricosa
2023 Ryan O'Dell
Chorizanthe ventricosa
2014 Neal Kramer

Chorizanthe xanti var. xanti    Riverside spineflower,  Xantus' spineflower
native
Annual herb

POLYGONACEAE

Chorizanthe xanti var. xanti
2021 Mike Russler
Chorizanthe xanti var. xanti
2020 Mike Russler
Chorizanthe xanti var. xanti
2021 Mike Russler

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

ASTERACEAE

Cirsium occidentale var. venustum
2020 Stacie Wolny
Cirsium occidentale var. venustum
2011 Steve Matson
Cirsium occidentale var. venustum
2011 Steve Matson

Clarkia cylindrica ssp. cylindrica    Speckled clarkia
native
Annual herb

ONAGRACEAE

Clarkia cylindrica ssp. cylindrica
2019 David Greenberger
Clarkia cylindrica ssp. cylindrica
2019 Bryant Baker
Clarkia cylindrica ssp. cylindrica
2020 Steve Laymon

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

ONAGRACEAE

Clarkia purpurea ssp. quadrivulnera
2014 Steve Matson
Clarkia purpurea ssp. quadrivulnera
2019 Joe Engelbrecht
Clarkia purpurea ssp. quadrivulnera
2021 R.A. Chasey

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

ONAGRACEAE

Clarkia unguiculata
2019 David Greenberger
Clarkia unguiculata
2021 Mike Russler
Clarkia unguiculata
2022 Suzanne L. Weakley

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

MONTIACEAE

Claytonia exigua ssp. exigua
2023 R.A. Chasey
Claytonia exigua ssp. exigua
2022 Mike Russler
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

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

Collinsia sparsiflora var. collina    Hillside collinsia
native
Annual herb

PLANTAGINACEAE

Collinsia sparsiflora var. collina
2021 Helen Hancock
Collinsia sparsiflora var. collina
2022 Mike Russler
Collinsia sparsiflora var. collina
2022 Mike Russler

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 simulans    Small flowered morning glory
rare native
Annual herb

CONVOLVULACEAE

Convolvulus simulans
2016 Ron Vanderhoff
Convolvulus simulans
2017 James Bailey
Convolvulus simulans
2023 David Gowen

Corethrogyne filaginifolia    Common sandaster
native
Perennial herb

ASTERACEAE

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

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

Cryptantha barbigera var. barbigera    Bearded cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha barbigera var. barbigera
2014 Steve Matson
Cryptantha barbigera var. barbigera
2012 Terrence Gosliner
Cryptantha barbigera var. barbigera
2014 Steve Matson

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

Cryptantha intermedia var. intermedia    Common cryptantha
native
Annual herb

BORAGINACEAE

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

Cryptantha nemaclada    Colusa cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha nemaclada
2011 Steve Matson
Cryptantha nemaclada
2011 Steve Matson
Cryptantha nemaclada
Donald Myrick1999 California Academy of Sciences

Cryptantha nevadensis var. rigida    Rigid cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha nevadensis var. rigida
2016 Bill Thiessen
Cryptantha nevadensis var. rigida
2019 Mary Merriman
Cryptantha nevadensis var. rigida
2016 Bill Thiessen

Cryptantha oxygona    Sharp nut cryptantha,  Sharpnut cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha oxygona
2022 Steve Matson
Cryptantha oxygona
2022 Steve Matson
Cryptantha oxygona
2020 Matt Berger

Cryptantha sparsiflora    Slender cryptantha
native
Annual herb

BORAGINACEAE

Cryptantha sparsiflora
2011 Steve Matson
Cryptantha sparsiflora
2011 Steve Matson

Deinandra halliana    Hall's tarplant
rare native
Annual herb

ASTERACEAE

Deinandra halliana
2023 R.A. Chasey
Deinandra halliana
2023 R.A. Chasey
Deinandra halliana
2023 R.A. Chasey

Deinandra kelloggii    Kellogg's tarweed
native
Annual herb

ASTERACEAE

Deinandra kelloggii
2021 Mike Russler
Deinandra kelloggii
2023 R.A. Chasey
Deinandra kelloggii
2021 Mike Russler

Deinandra pallida    Kern tarweed
native
Annual herb

ASTERACEAE

Deinandra pallida
2019 Diane Etchison
Deinandra pallida
2021 Mike Russler
Deinandra pallida
2010 Neal Kramer

Deinandra pentactis    Salinas river tarweed
native
Annual herb

ASTERACEAE

Deinandra pentactis
2015 Richard Spellenberg
Deinandra pentactis
2015 Richard Spellenberg
Deinandra pentactis
2023 Ryan O'Dell

Delphinium gypsophilum    Gypsum loving larkspur,  Pinoche creek larkspur
native
Perennial herb

RANUNCULACEAE

Delphinium gypsophilum
2022 Mike Russler
Delphinium gypsophilum
2022 Mike Russler
Delphinium gypsophilum
2016 Steve Matson

native
Perennial herb

THEMIDACEAE

Dipterostemon capitatus ssp. capitatus
2023 Alaine Arslan
Dipterostemon capitatus ssp. capitatus
2008 Steve Matson
Dipterostemon capitatus ssp. capitatus
2016 Steve Matson

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

Ephedra viridis    Green ephedra,  Mormon tea,  Mountain ephedra
native
Shrub

EPHEDRACEAE

Ephedra viridis
2021 Bryant Baker
Ephedra viridis
2021 Bryant Baker
Ephedra viridis
2021 Bryant Baker

rare native
Annual herb

MALVACEAE

Eremalche parryi ssp. kernensis
2020 David Greenberger
Eremalche parryi ssp. kernensis
2018 Sarah Termondt
Eremalche parryi ssp. kernensis
2023 Mike Russler

Eremothera boothii ssp. decorticans    Shredding evening-primrose
native
Annual herb

ONAGRACEAE

Eremothera boothii ssp. decorticans
2019 Matt Berger
Eremothera boothii ssp. decorticans
2020 David Greenberger
Eremothera boothii ssp. decorticans
2020 Bryant Baker

Ericameria linearifolia    Interior goldenbush,  Linear leaved goldenbush,  Narrowleaf goldenbush
native
Shrub

ASTERACEAE

Ericameria linearifolia
2015 James Gonsman
Ericameria linearifolia
2022 Suzanne L. Weakley
Ericameria linearifolia
2014 Steve Matson

Erigeron canadensis    Canada horseweed
native
Annual herb

ASTERACEAE

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

Eriogonum angulosum    Angled stem buckwheat,  Anglestem buckwheat
native
Annual herb

POLYGONACEAE

Eriogonum angulosum
2021 Mike Russler
Eriogonum angulosum
2021 Mike Russler
Eriogonum angulosum
2009 Keir Morse

Eriogonum covilleanum    Coville's buckwheat
native
Annual herb

POLYGONACEAE

Eriogonum covilleanum
2022 Mike Russler
Eriogonum covilleanum
2022 Mike Russler
Eriogonum covilleanum
2022 Mike Russler

Eriogonum elongatum var. elongatum    Long stemmed buckwheat
native
Perennial herb

POLYGONACEAE

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

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

POLYGONACEAE

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

Eriogonum fasciculatum var. polifolium    California buckwheat,  Eastern mojave buckwheat
native
Shrub

POLYGONACEAE

Eriogonum fasciculatum var. polifolium
2020 Ron Vanderhoff
Eriogonum fasciculatum var. polifolium
2021 Mike Russler
Eriogonum fasciculatum var. polifolium
2022 Steve Matson

Eriogonum nudum var. indictum    Naked buckwheat,  Protruding buckwheat
rare native
Perennial herb

POLYGONACEAE

Eriogonum nudum var. indictum
2021 Mike Russler
Eriogonum nudum var. indictum
2021 Mike Russler
Eriogonum nudum var. indictum
2021 Mike Russler

Eriogonum roseum    Wand buckwheat
native
Annual herb

POLYGONACEAE

Eriogonum roseum
2019 Matt Berger
Eriogonum roseum
2014 Steve Matson
Eriogonum roseum
2014 Steve Matson

Eriogonum temblorense    Temblor buckwheat
rare native
Annual herb

POLYGONACEAE

Eriogonum temblorense
2023 Matt Berger
Eriogonum temblorense
2023 Matt Berger
Eriogonum temblorense
2023 Matt Berger

Eriogonum viridescens    Bright green buckwheat,  Twotooth buckwheat
native
Annual herb

POLYGONACEAE

Eriogonum viridescens
2022 Ryan O'Dell
Eriogonum viridescens
2019 Matt Berger
Eriogonum viridescens
2021 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
2014 Bryan Derr
Erodium botrys
2017 Gary McDonald
Erodium botrys
2015 Ken Lunders

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
2020 Julia Markey
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 James Bailey
Erodium moschatum
2018 Stacie Wolny

Erythranthe cardinalis    Cardinal monkey flower
native
Perennial herb

PHRYMACEAE

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

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

Eschscholzia hypecoides    Leafy stemmed poppy,  San benito poppy
rare native
Annual herb

PAPAVERACEAE

Eschscholzia hypecoides
2022 Mike Russler
Eschscholzia hypecoides
2022 Mike Russler
Eschscholzia hypecoides
2022 Mike Russler

native
Annual herb

PAPAVERACEAE

Eschscholzia lemmonii ssp. lemmonii
2021 R.A. Chasey
Eschscholzia lemmonii ssp. lemmonii
2011 Neal Kramer
Eschscholzia lemmonii ssp. lemmonii
2011 Neal Kramer

Eschscholzia minutiflora    Coville s poppy,  Pygmy poppy
native
Annual herb

PAPAVERACEAE

Eschscholzia minutiflora
2020 David Greenberger
Eschscholzia minutiflora
2022 Steve Matson
Eschscholzia minutiflora
2017 Diane Etchison

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 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

Fritillaria agrestis    Stinkbells
rare native
Perennial herb (bulb)

LILIACEAE

Fritillaria agrestis
2023 Catherine Chang
Fritillaria agrestis
2022 Dee Shea Himes
Fritillaria agrestis
2021 Damon Tighe

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

Gilia brecciarum    Nevada gilia,  Small gilia
native
Annual herb

POLEMONIACEAE

Gilia brecciarum
2016 Steve Matson
Gilia brecciarum
2016 Steve Matson
Gilia brecciarum
2016 Bob Sweatt

Gilia malior    Scrub gilia
native
Annual herb

POLEMONIACEAE

Gilia malior
2014 Steve Matson
Gilia malior
2014 Steve Matson
Gilia malior
2006 James M. Andre

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

POLEMONIACEAE


Gilia tricolor ssp. diffusa    Bird's eye gilia,  Bird's eyes
native
Annual herb

POLEMONIACEAE

Gilia tricolor ssp. diffusa
2019 David Magney
Gilia tricolor ssp. diffusa
2019 Matt Berger
Gilia tricolor ssp. diffusa
2019 Matt Berger

Gilia tricolor ssp. tricolor    Bird's eye gilia,  Bird's eyes
native
Annual herb

POLEMONIACEAE

Gilia tricolor ssp. tricolor
2021 Steve Matson
Gilia tricolor ssp. tricolor
2021 Steve Matson
Gilia tricolor ssp. tricolor
2021 Steve Matson

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

Gutierrezia californica    California matchweed,  Matchweed, snakeweed,  San joaquin snakeweed
native
Perennial herb, Shrub

ASTERACEAE

Gutierrezia californica
2021 Helen Hancock
Gutierrezia californica
2018 Ron Vanderhoff
Gutierrezia californica
2021 Mike Russler

Hazardia stenolepis    Narrow scaled goldenbush,  Serpentine bristleweed
native
Shrub (stem succulent)

ASTERACEAE

Hazardia stenolepis
2012 George Butterworth
Hazardia stenolepis
2012 George Butterworth
Hazardia stenolepis
2011 George Butterworth

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

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

Hollisteria lanata    False spikeflower,  False spineflower
native
Annual herb

POLYGONACEAE

Hollisteria lanata
2021 Mike Russler
Hollisteria lanata
2021 Mike Russler
Hollisteria lanata
2016 Steve Matson

Holocarpha heermannii    Heermann's tarweed
native
Annual herb

ASTERACEAE

Holocarpha heermannii
2018 Richard Spjut
Holocarpha heermannii
2022 Cynthia Powell
Holocarpha heermannii
2022 Cynthia Powell

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

Isocoma acradenia var. bracteosa    Bracted alkali goldenbush
native
Shrub

ASTERACEAE

Isocoma acradenia var. bracteosa
2021 Mike Russler
Isocoma acradenia var. bracteosa
2021 Mike Russler
Isocoma acradenia var. bracteosa
2010 Neal Kramer

Juniperus californica    California juniper
native
Shrub

CUPRESSACEAE

Juniperus californica
2019 Patrick Furtado
Juniperus californica
2017 Gary McDonald
Juniperus californica
2014 Ron Vanderhoff

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

ASTERACEAE

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

Lagophylla ramosissima    Branched lagophylla,  Common hareleaf
native
Annual herb

ASTERACEAE

Lagophylla ramosissima
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 gracilis    Needle goldfields
native
Annual herb

ASTERACEAE

Lasthenia gracilis
2016 Michael Mitchell
Lasthenia gracilis
2019 Susan McDougall
Lasthenia gracilis
2014 Michael Mitchell

Lasthenia minor    Coastal goldfields,  Smooth lasthenia,  Woolly goldfields
native
Annual herb

ASTERACEAE

Lasthenia minor
2007 Toni Corelli
Lasthenia minor
2019 James Gonsman
Lasthenia minor
2015 Toni Corelli

Layia glandulosa    White layia,  White tidy tips,  Whitedaisy tidytips
native
Annual herb

ASTERACEAE

Layia glandulosa
2016 James Gonsman
Layia glandulosa
2021 Mike Russler
Layia glandulosa
2017 Alison Sheehey

Layia heterotricha    Pale yellow layia,  Paleyellow tidytips
rare native
Annual herb

ASTERACEAE

Layia heterotricha
2021 Mike Russler
Layia heterotricha
2021 Mike Russler
Layia heterotricha
2018 Sarah Termondt

Layia munzii    Munz's tidy tips,  Munz's tidytips
rare native
Annual herb

ASTERACEAE

Layia munzii
2006 Steve Matson
Layia munzii
2015 Craig Fiehler
Layia munzii
2006 Steve Matson

Layia pentachaeta ssp. albida    Sierra tidytips,  White sierra tidy tips
native
Annual herb

ASTERACEAE

Layia pentachaeta ssp. albida
2019 Mary Merriman
Layia pentachaeta ssp. albida
2018 Richard Spjut
Layia pentachaeta ssp. albida
2011 Richard Spjut

Lemna sp.    Small Tree-Mallow


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

BRASSICACEAE

Lepidium nitidum
2020 Linda Pardy
Lepidium nitidum
2019 Gary McDonald
Lepidium nitidum
2016 Steve Matson

Leptosiphon parviflorus    Variable linanthus
native
Annual herb

POLEMONIACEAE

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

Leptosyne bigelovii    Bigelow coreopsis
native
Annual herb

ASTERACEAE

Leptosyne bigelovii
2019 Diane Etchison
Leptosyne bigelovii
2020 John L. Thompson
Leptosyne bigelovii
2020 Matt Berger

Leptosyne calliopsidea    Leafy stemmed coreopsis
native
Annual herb

ASTERACEAE

Leptosyne calliopsidea
2020 David Greenberger
Leptosyne calliopsidea
2021 R.A. Chasey
Leptosyne calliopsidea
2020 David Greenberger

native
Annual herb

POLEMONIACEAE

Linanthus dichotomus ssp. dichotomus
2019 Jacob Smith
Linanthus dichotomus ssp. dichotomus
2008 Steve Matson
Linanthus dichotomus ssp. dichotomus
2021 Mike Russler

Lithophragma parviflorum var. parviflorum    Pink woodland star,  Smallflower woodland star
native
Perennial herb

SAXIFRAGACEAE

Lithophragma parviflorum var. parviflorum
2013 Jean Pawek
Lithophragma parviflorum var. parviflorum
2019 Gary McDonald
Lithophragma parviflorum var. parviflorum
2013 Jean Pawek

Logfia filaginoides    California cottonrose
native
Annual herb

ASTERACEAE

Logfia filaginoides
2019 Steve Matson
Logfia filaginoides
2019 Steve Matson
Logfia filaginoides
2019 Matt Berger

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

Lupinus albifrons var. albifrons    Silver bush lupine,  Silver lupine
native
Shrub

FABACEAE

Lupinus albifrons var. albifrons
2012 Michael Mitchell
Lupinus albifrons var. albifrons
2020 Richard Spjut
Lupinus albifrons var. albifrons
2020 Susan McDougall

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

FABACEAE

Lupinus bicolor
2022 Mike Russler
Lupinus bicolor
2022 Mike Russler
Lupinus bicolor
2019 Gary McDonald

Lupinus microcarpus var. microcarpus    Chick lupine,  Valley lupine
native
Annual herb

FABACEAE

Lupinus microcarpus var. microcarpus
2016 Michael Mitchell
Lupinus microcarpus var. microcarpus
2014 Michael Mitchell
Lupinus microcarpus var. microcarpus
2015 Michael Mitchell

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

FABACEAE

Lupinus succulentus
2018 Stacie Wolny
Lupinus succulentus
2018 Stacie Wolny
Lupinus succulentus
2018 Stacie Wolny

Madia radiata    Golden madia,  Showy madia
rare native
Annual herb

ASTERACEAE

Madia radiata
2023 Jacob Smith
Madia radiata
2016 George Butterworth
Madia radiata
2016 George Butterworth

Malacothrix coulteri    Snake's head
native
Annual herb

ASTERACEAE

Malacothrix coulteri
2020 David Greenberger
Malacothrix coulteri
2020 Matt Berger
Malacothrix coulteri
2020 David Greenberger

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

ASTERACEAE

Malacothrix floccifera
2019 David Greenberger
Malacothrix floccifera
2020 David Greenberger
Malacothrix floccifera
2020 Kevin Janicki

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 Karen Scheuermann
Marah fabacea
2021 Cyril Guyot
Marah fabacea
2018 Gary McDonald

Matricaria discoidea    Pineapple weed
native
Annual herb

ASTERACEAE

Matricaria discoidea
2008 Steve Matson
Matricaria discoidea
2019 Diane Etchison
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

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

FABACEAE

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

Mentzelia pectinata    San joaquin blazing star,  San joaquin blazingstar
native
Annual herb

LOASACEAE

Mentzelia pectinata
2021 Mike Russler
Mentzelia pectinata
2021 Mike Russler
Mentzelia pectinata
2021 Mike Russler

Micranthes californica    Greene's saxifrage
native
Perennial herb

SAXIFRAGACEAE

Micranthes californica
2016 Steve Matson
Micranthes californica
2016 Steve Matson
Micranthes californica
2023 Helen Hancock

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
null

Microseris campestris    San joaquin microseris,  San joaquin silverpuffs
native
Annual herb

ASTERACEAE

Microseris campestris
2022 Cynthia Powell
Microseris campestris
2022 Cynthia Powell
Microseris campestris
2022 Dianne Lake

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

ASTERACEAE

Microseris douglasii ssp. douglasii
2022 Steve Laymon
Microseris douglasii ssp. douglasii
2019 John Rawlings
Microseris douglasii ssp. douglasii
2022 Mike Russler

Microsteris gracilis    Slender phlox
native
Annual herb

POLEMONIACEAE

Microsteris gracilis
2019 Matt Berger
Microsteris gracilis
2003 Steve Matson
Microsteris gracilis
2003 Steve Matson

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

NYCTAGINACEAE

Mirabilis laevis var. crassifolia
2021 Ron Vanderhoff
Mirabilis laevis var. crassifolia
2018 Ron Vanderhoff
Mirabilis laevis var. crassifolia
2022 Ron Vanderhoff

Monolopia lanceolata    Common monolopia
native
Annual herb

ASTERACEAE

Monolopia lanceolata
2016 Steve Matson
Monolopia lanceolata
2016 Steve Matson
Monolopia lanceolata
2016 Steve Matson

Navarretia mitracarpa    Paso robles navarretia
native
Annual herb

POLEMONIACEAE

Navarretia mitracarpa
2022 Mike Russler
Navarretia mitracarpa
2019 David Greenberger
Navarretia mitracarpa
2022 Mike Russler

Nemophila menziesii    Baby blue eyes
native
Annual herb

HYDROPHYLLACEAE

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

Nemophila pedunculata    Littlefoot nemophila,  Meadow nemophila
native
Annual herb

HYDROPHYLLACEAE

Nemophila pedunculata
2019 Matt Berger
Nemophila pedunculata
2003 Steve Matson
Nemophila pedunculata
2023 Helen Hancock

Pectocarya anisocarpa    Small Tree-Mallow


Pectocarya linearis ssp. ferocula    Sagebrush combseed,  Slender comb seed,  Slender pectocarya
native
Annual herb

BORAGINACEAE

Pectocarya linearis ssp. ferocula
2021 Ron Vanderhoff
Pectocarya linearis ssp. ferocula
2019 Ron Vanderhoff
Pectocarya linearis ssp. ferocula
2016 Ron Vanderhoff

Pectocarya setosa    Moth combseed,  Stiff stemmed comb bur
native
Annual herb

BORAGINACEAE

Pectocarya setosa
2014 Steve Matson
Pectocarya setosa
2020 Matt Berger
Pectocarya setosa
2014 Steve Matson

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

HYDROPHYLLACEAE

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

Phacelia douglasii var. petrophila    Douglas' phacelia,  Rockloving phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia douglasii var. petrophila
2020 David Greenberger
Phacelia douglasii var. petrophila
2021 R.A. Chasey
Phacelia douglasii var. petrophila
2021 R.A. Chasey

Phacelia fremontii    Fremont's phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia fremontii
2022 Steve Matson
Phacelia fremontii
2022 Mike Russler
Phacelia fremontii
2014 Steve Conger

Phacelia tanacetifolia    Lacy phacelia,  Tansy leafed phacelia
native
Annual herb

HYDROPHYLLACEAE

Phacelia tanacetifolia
2022 Mike Russler
Phacelia tanacetifolia
2022 Mike Russler
Phacelia tanacetifolia
2022 Charles Russell

Pholistoma membranaceum    White fiesta flower,  White fiestaflower
native
Annual herb

HYDROPHYLLACEAE

Pholistoma membranaceum
2023 David Wolfson
Pholistoma membranaceum
2019 Gary McDonald
Pholistoma membranaceum
2022 Mike Russler

Plagiobothrys arizonicus    Arizona popcorn flower,  Arizona popcornflower
native
Annual herb

BORAGINACEAE

Plagiobothrys arizonicus
2020 Steve Matson
Plagiobothrys arizonicus
2019 Richard Spjut
Plagiobothrys arizonicus
2020 Steve Matson

Plagiobothrys canescens    Grey popcorn flower,  Valley popcorn flower,  Valley popcornflower
native
Annual herb

BORAGINACEAE

Plagiobothrys canescens
2022 Catherine Chang
Plagiobothrys canescens
2016 Steve Matson
Plagiobothrys canescens
2016 Steve Matson

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

PLANTAGINACEAE

Plantago erecta
2021 Charles Russell
Plantago erecta
2008 Margo Bors
Plantago erecta
2022 Mike Russler

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

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

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

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

Quercus douglasii    Blue oak
native
Tree

FAGACEAE

Quercus douglasii
2023 Ryan O'Dell
Quercus douglasii
2018 Gary McDonald
Quercus douglasii
2020 Charles Russell

Quercus john-tuckeri    Tucker oak,  Tucker's oak
native
Tree

FAGACEAE

Quercus john-tuckeri
2019 Richard Spjut
Quercus john-tuckeri
2015 Keir Morse
Quercus john-tuckeri
2019 Richard Spjut

Quercus lobata    California white oak,  Valley oak
native
Tree

FAGACEAE

Quercus lobata
2018 stephen rosenthal
Quercus lobata
2021 Cynthia Powell
Quercus lobata
2020 Charles Russell

Salix laevigata    Polished willow,  Red willow
native
Tree

SALICACEAE

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

Salvia columbariae    Chia sage
native
Annual herb

LAMIACEAE

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

Salvia mellifera    Black sage
native
Shrub

LAMIACEAE

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

Sambucus nigra ssp. caerulea    Blue elderberry
native
Tree, Shrub

VIBURNACEAE

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

Sanicula bipinnata    Poison sanicle
native
Perennial herb

APIACEAE

Sanicula bipinnata
2008 Steve Matson
Sanicula bipinnata
2009 Keir Morse
Sanicula bipinnata
2022 R.A. Chasey

Senecio californicus    California butterweed,  California groundsel,  California ragwort
native
Annual herb

ASTERACEAE

Senecio californicus
2019 Diane Etchison
Senecio californicus
2023 Ron Vanderhoff
Senecio californicus
2022 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

Sinapis arvensis    Charlock mustard
invasive non-native
Annual herb

BRASSICACEAE

Sinapis arvensis
2020 Randy Huey
Sinapis arvensis
2021 Randy Huey
Sinapis arvensis
2022 Mike Russler

Sisymbrium orientale    Indian hedge mustard,  Oriental hedge mustard
non-native
Annual, Perennial herb

BRASSICACEAE

Sisymbrium orientale
2019 Diane Etchison
Sisymbrium orientale
2021 Paul Aigner
Sisymbrium orientale
2021 Ron Vanderhoff

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

SOLANACEAE

Solanum umbelliferum var. umbelliferum
2022 Mike Russler
Solanum umbelliferum var. umbelliferum
2014 Steve Matson
Solanum umbelliferum var. umbelliferum
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 nitens    Shining chickweed,  Shiny chickweed,  Smooth chickweed
native
Annual herb

CARYOPHYLLACEAE

Stellaria nitens
2020 Ken Hickman
Stellaria nitens
2022 Catherine Chang
Stellaria nitens
2017 David popp

Stephanomeria pauciflora    Brownplume wirelettuce,  Desert straw,  Wire lettuce
native
Perennial herb

ASTERACEAE

Stephanomeria pauciflora
2015 Steve Matson
Stephanomeria pauciflora
2015 Steve Matson
Stephanomeria pauciflora
2015 Steve Matson

Stipa speciosa    Desert needle grass
native
Perennial grass

POACEAE

Stipa speciosa
2011 Steve Matson
Stipa speciosa
2022 Dana York
Stipa speciosa
2018 Liz Block

Streptanthus anceps    Lemmon's mustard
native
Annual herb

BRASSICACEAE

Streptanthus anceps
2006 Steve Matson
Streptanthus anceps
2006 Steve Matson
Streptanthus anceps
2006 Steve Matson

Streptanthus lasiophyllus    Small Tree-Mallow


Streptanthus lemmonii    Lemmon's jewelflower,  Lemmon's wild cabbage
rare native
Annual herb

BRASSICACEAE

Streptanthus lemmonii
2016 Craig Fiehler
Streptanthus lemmonii
2023 Ellen Uhler
Streptanthus lemmonii
2011 Dylan Neubauer

Tetrapteron graciliflorum    Hill sun cup
native
Annual herb

ONAGRACEAE

Tetrapteron graciliflorum
2021 Charles Russell
Tetrapteron graciliflorum
2009 Keir Morse
Tetrapteron graciliflorum
2010 Richard Spjut

native
Annual herb

BRASSICACEAE

Thysanocarpus curvipes ssp. curvipes
2019 Matt Berger
Thysanocarpus curvipes ssp. curvipes
2020 R.A. Chasey
Thysanocarpus curvipes ssp. curvipes
2022 Mike Russler

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

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 gracilentum    Graceful clover,  Pin point clover,  Pinpoint clover
native
Annual herb

FABACEAE

Trifolium gracilentum
2016 Steve Matson
Trifolium gracilentum
2016 Steve Matson
Trifolium gracilentum
2016 Steve Matson

Trifolium willdenovii    Tomcat clover
native
Annual herb

FABACEAE

Trifolium willdenovii
2019 Ron Vanderhoff
Trifolium willdenovii
2019 Ron Vanderhoff
Trifolium willdenovii
2018 Stacie Wolny

Uropappus lindleyi    Silver puffs,  Uropappus
native
Annual herb

ASTERACEAE

Uropappus lindleyi
2019 Zack Abbey
Uropappus lindleyi
2022 Mary Ann Machi
Uropappus lindleyi
2016 Ron Vanderhoff

Verbascum virgatum    Wand mullein
non-native
Perennial herb

SCROPHULARIACEAE

Verbascum virgatum
2019 Jerry Thornton
Verbascum virgatum
2022 Amber Bedgood
Verbascum virgatum
2021 Ron Vanderhoff

Zannichellia palustris    Horned pondweed
native
Perennial herb

ZANNICHELLIACEAE

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