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logo Calflora  Illustrated Plant List 

Common grassland plants of Tam for assessment/inventory
84 PLANTS
Erodium   


Achillea millefolium    Common yarrow
native
Perennial herb

ASTERACEAE

Achillea millefolium
© 2022 Andy Ford
Achillea millefolium
© 2020 Bob Sweatt
Achillea millefolium
© 2018 Gary McDonald

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

FABACEAE

Acmispon americanus
© 2019 Rachelle Gray
Acmispon americanus
© 2013 Arcangelo Wessells
Acmispon americanus
© 2017 David Wolfson

Acmispon brachycarpus    hill lotus
native
Annual herb

FABACEAE

Acmispon brachycarpus
© 2023 R.A. Chasey
Acmispon brachycarpus
© 2018 Steve Matson
Acmispon brachycarpus
© 2018 Steve Matson

Acmispon parviflorus    Hill lotus
native
Annual herb

FABACEAE

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

Acmispon wrangelianus    Wrangel lotus
native
Annual herb

FABACEAE

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

Agoseris grandiflora    Bigflower agoseris,  California dandelion,  Giant mountain dandelion
native
Perennial herb

ASTERACEAE

Agoseris grandiflora
© 2014 Steve Matson
Agoseris grandiflora
© 2014 Steve Matson
Agoseris grandiflora
© 2014 Steve Matson

Aira caryophyllea    Shiver grass,  Silver hairgrass,  Silvery hairgrass
invasive non-native
Annual grass

POACEAE

Aira caryophyllea
© 2005 Steve Matson
Aira caryophyllea
© 2005 Steve Matson
Aira caryophyllea
© 2005 Steve Matson

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

native
Shrub

ASTERACEAE

Baccharis pilularis ssp. consanguinea
© 2024 Ron Vanderhoff
Baccharis pilularis ssp. consanguinea
© 2022 John Doyen
Baccharis pilularis ssp. consanguinea
© 2024 Mike Russler

Brachypodium distachyon    False brome,  Purple false brome
invasive non-native
Annual, Perennial grass

POACEAE

Brachypodium distachyon
© 2019 Ron Vanderhoff
Brachypodium distachyon
© 2021 John Rawlings
Brachypodium distachyon
© 2019 Ron Vanderhoff

Briza maxima    Big quaking grass,  Big quakinggrass,  Rattlesnake grass
invasive non-native
Annual grass

POACEAE

Briza maxima
© 2017 Gary McDonald
Briza maxima
© 2018 Bill Schmidt
Briza maxima
© 2017 Gary McDonald

Brodiaea elegans    Harvest brodiaea
native
Perennial herb

THEMIDACEAE

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

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

POACEAE

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

Bromus 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

invasive non-native
Annual grass

POACEAE

Bromus madritensis ssp. rubens
© 2015 Chris Jaster
Bromus madritensis ssp. rubens
© 2015 jamie smith
Bromus madritensis ssp. rubens
© 2018 Gary McDonald

Bromus carinatus    California brome
native
Perennial grass

POACEAE

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

Calycadenia multiglandulosa    Rosin weed,  Sticky calycadenia,  Sticky western rosinweed
native
Annual herb

ASTERACEAE

Calycadenia multiglandulosa
© 2018 Alice Cummings
Calycadenia multiglandulosa
© 2021 R.A. Chasey
Calycadenia multiglandulosa
© 2019 Alice Cummings

Carduus pycnocephalus    Italian thistle
invasive non-native
Annual herb

ASTERACEAE

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

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
© 2023 Ron Vanderhoff

Cirsium vulgare    Bull thistle
invasive non-native
Perennial herb

ASTERACEAE

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

Clarkia gracilis ssp. gracilis    Graceful clarkia,  Slender clarkia
native
Annual herb

ONAGRACEAE

Clarkia gracilis ssp. gracilis
© 2021 Steve Laymon
Clarkia gracilis ssp. gracilis
© 2023 Larry Dizmang
Clarkia gracilis ssp. gracilis
© 2020 Steve Laymon

Clarkia purpurea    Purple clarkia,  Winecup clarkia
native
Annual herb

ONAGRACEAE

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

Cynosurus echinatus    Annual dogtail,  Bristly dogstail grass,  Dogtail grass
invasive non-native
Annual grass

POACEAE

Cynosurus echinatus
© 2024 R.A. Chasey
Cynosurus echinatus
© 2010 Julie A. Kierstead
Cynosurus echinatus
© 2022 Ron Vanderhoff

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

POACEAE

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

Danthonia californica    California oatgrass
native
Perennial grass

POACEAE

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

Dichelostemma congestum    Fork toothed ookow,  Ookow
native
Perennial herb

THEMIDACEAE

Dichelostemma congestum
© 2017 Gary Morgret
Dichelostemma congestum
© 2019 Suzanne L. Weakley
Dichelostemma congestum
© 2023 Teal Derrer

Dichelostemma capitatum    Blue dicks
native
Perennial herb

THEMIDACEAE

Dichelostemma capitatum
© 2023 Steve Matson
Dichelostemma capitatum
© 2022 Steve Matson
Dichelostemma capitatum
© 2019 Steve Matson

Elymus glaucus    Blue wildrye
native
Perennial grass

POACEAE

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

Eriogonum nudum    Naked buckwheat,  Nude buckwheat
native
Shrub

POLYGONACEAE

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

Erodium botrys    Big heron bill,  Broad leaf filaree,  Long beaked filaree
non-native
Annual herb

GERANIACEAE

Erodium botrys
© 2006 Steve Matson
Erodium botrys
© 2006 Steve Matson
Erodium botrys
© 2006 Steve Matson

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

GERANIACEAE

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

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

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 idahoensis    Blue bunchgrass,  Blue fescue,  Idaho fescue
native
Perennial grass

POACEAE

Festuca idahoensis
© 2016 Brett Dean
Festuca idahoensis
© 2020 Paul Aigner
Festuca idahoensis
© 2016 Andrew Longman

Festuca myuros    Rattail sixweeks grass
invasive non-native
Annual grass

POACEAE

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

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

ROSACEAE

Fragaria vesca
© 2024 Dana York
Fragaria vesca
© 2020 Cara Wilcox
Fragaria vesca
© 2023 R.A. Chasey

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

RUBIACEAE

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

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
© 2024 Mike Russler
Geranium dissectum
© 2014 Bryan Derr

Geranium molle    Crane's bill geranium,  Dove's foot geranium,  Dovefoot geranium
invasive non-native
Annual, Perennial herb

GERANIACEAE

Geranium molle
© 2008 Steve Matson
Geranium molle
© 2008 Steve Matson
Geranium molle
© 2008 Steve Matson

Hemizonia congesta ssp. lutescens    Hayfield tarweed
native
Annual herb

ASTERACEAE

Hemizonia congesta ssp. lutescens
© 2021 R.A. Chasey
Hemizonia congesta ssp. lutescens
© 2023 R.A. Chasey
Hemizonia congesta ssp. lutescens
© 2023 R.A. Chasey

Heterotheca sessiliflora ssp. bolanderi    Bolander's goldenaster,  Golden aster,  Sessileflower false goldenaster
native
Perennial herb

ASTERACEAE

Heterotheca sessiliflora ssp. bolanderi
© 2015 Tim Miller
Heterotheca sessiliflora ssp. bolanderi
© 2020 Mary Sue Ittner
Heterotheca sessiliflora ssp. bolanderi
© 2018 Julian Geoghegan

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

POACEAE

Holcus lanatus
© 2019 Bill Haley
Holcus lanatus
© 2024 David popp
Holcus lanatus
© 2019 Bill Haley

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

POACEAE

Hordeum murinum
© 2018 Gary McDonald
Hordeum murinum
© 2021 Ron Vanderhoff
Hordeum murinum
© 2017 Gary McDonald

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

ASTERACEAE

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

Hypochaeris radicata    Hairy cats ear,  Hairy catsear,  Rough cat's ear
invasive non-native
Perennial herb

ASTERACEAE

Hypochaeris radicata
© 2015 James Gonsman
Hypochaeris radicata
© 2017 Gary McDonald
Hypochaeris radicata
© 2016 Michael Mitchell

Iris douglasiana    Douglas iris,  Douglas' iris
native
Perennial herb

IRIDACEAE

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

Iris macrosiphon    Bowltube iris,  Ground iris,  Long tubed iris
native
Perennial herb

IRIDACEAE

Iris macrosiphon
© 2017 Steve Matson
Iris macrosiphon
© 2024 Suzanne L. Weakley
Iris macrosiphon
© 2021 Mike Russler

Juncus effusus ssp. pacificus    Pacific rush
native
Perennial grasslike herb

JUNCACEAE

Juncus effusus ssp. pacificus
© 2024 R.A. Chasey
Juncus effusus ssp. pacificus
© 2021 R.A. Chasey
Juncus effusus ssp. pacificus
© 2021 John Rawlings

Juncus patens    Common rush,  Spreading rush
native
Perennial grasslike herb

JUNCACEAE

Juncus patens
© 2022 R.A. Chasey
Juncus patens
© 2022 R.A. Chasey
Juncus patens
© 2018 Emily Allen

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

APIACEAE

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

Lomatium utriculatum    Bladder parsnip,  Common lomatium,  Hog fennel
native
Perennial herb

APIACEAE

Lomatium utriculatum
© 2006 Steve Matson
Lomatium utriculatum
© 2006 Steve Matson
Lomatium utriculatum
© 2015 James Gonsman

Lupinus nanus    Sky lupine
native
Annual herb

FABACEAE

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

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

JUNCACEAE

Luzula comosa
© 2021 Steve Matson
Luzula comosa
© 2021 Steve Matson
Luzula comosa
© 2021 Steve Matson

Marah oregana    Coast man-root
native
Perennial herb, Vine

CUCURBITACEAE

Marah oregana
© 2016 Steve Matson
Marah oregana
© 2016 Steve Matson
Marah oregana
© 2016 Steve Matson

Perideridia kelloggii    Kellogg's yampah,  Yampah
native
Perennial herb

APIACEAE

Perideridia kelloggii
© 2022 Suzanne L. Weakley
Perideridia kelloggii
© 2023 Ryan O'Dell
Perideridia kelloggii
© 2022 R.A. Chasey

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

PLANTAGINACEAE

Plantago lanceolata
© 2008 Steve Matson
Plantago lanceolata
© 2019 Joe Engelbrecht
Plantago lanceolata
© 2021 Ken Lunders

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

POACEAE

Poa pratensis
© 2024 Erin Bergman
Poa pratensis
© 2024 Emily R. Allen
Poa pratensis
© 2024 Emily R. Allen

Dodecatheon hendersonii    Mosquito bill
native
Perennial herb

PRIMULACEAE

Dodecatheon hendersonii
© 2025 Britt Thorsnes
Dodecatheon hendersonii
© 2016 Steve Matson
Dodecatheon hendersonii
© 2020 BLM Redding Field Office

native
Perennial herb

ASTERACEAE

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

Pseudognaphalium californicum    Ladies' tobacco
native
Annual, Perennial herb

ASTERACEAE

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

Pseudotsuga menziesii var. menziesii    Douglas fir,  Douglas spruce,  False hemlock
native
Tree

PINACEAE

Pseudotsuga menziesii var. menziesii
© 2020 David Krause
Pseudotsuga menziesii var. menziesii
© 2022 David popp
Pseudotsuga menziesii var. menziesii
© 2024 David popp

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

DENNSTAEDTIACEAE

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

Quercus agrifolia    California live oak,  Coast live oak
native
Tree

FAGACEAE

Quercus agrifolia
© 2019 Patrick Furtado
Quercus agrifolia
© 2022 Andy Ford
Quercus agrifolia
© 2018 Marcyn Del Clements

Ranunculus californicus    California buttercup
native
Perennial herb

RANUNCULACEAE

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

Rumex pulcher    Fiddle dock
non-native
Perennial herb

POLYGONACEAE

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

Sherardia arvensis    Blue fieldmadder,  Field madder
non-native
Annual herb

RUBIACEAE

Sherardia arvensis
© 2005 Steve Matson
Sherardia arvensis
© 2008 Steve Matson
Sherardia arvensis
© 2008 Steve Matson

Sidalcea malviflora ssp. malviflora    Checker mallow,  Dwarf checkerbloom
native
Perennial herb (rhizomatous)

MALVACEAE

Sidalcea malviflora ssp. malviflora
© 2022 Mary Conway
Sidalcea malviflora ssp. malviflora
© 2021 Zoya Akulova-Barlow
Sidalcea malviflora ssp. malviflora
© 2022 Ron Vanderhoff

Sisyrinchium bellum    Western blue eyed grass
native
Perennial herb

IRIDACEAE

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

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

ASTERACEAE

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

Stipa pulchra    Purple needle grass
native
Perennial grass

POACEAE

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

Symphyotrichum chilense    California aster,  Pacific aster
native
Perennial herb

ASTERACEAE

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

Thermopsis californica    California goldenbanner
native
Perennial herb

FABACEAE

Thermopsis californica
© 2023 Suzanne L. Weakley
Thermopsis californica
© 2022 Donald Burk
Thermopsis californica
© 2019 Bonnie Nickel

Trifolium albopurpureum    Indian clover,  Rancheria clover
native
Annual herb

FABACEAE

Trifolium albopurpureum
© 2021 Mike Russler
Trifolium albopurpureum
© 2021 Mike Russler
Trifolium albopurpureum
© 2024 Ryan O'Dell

Trifolium depauperatum    Cowbag clover,  Dwarf sack clover,  Pale sack clover
native
Annual herb

FABACEAE

Trifolium depauperatum
© 2021 Steve Matson
Trifolium depauperatum
© 2021 Steve Matson
Trifolium depauperatum
© 2022 Ken-ichi Ueda

Trifolium hirtum    Rose clover
invasive non-native
Annual herb

FABACEAE

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

Trifolium microcephalum    Hairy clover,  Small headed clover
native
Annual herb

FABACEAE

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

Trifolium microdon    Thimble clover,  Valparaiso clover
native
Annual herb

FABACEAE

Trifolium microdon
© 2022 Dee Shea Himes
Trifolium microdon
© 2023 R.A. Chasey
Trifolium microdon
© 2025 Bill Kress

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

FABACEAE

Trifolium subterraneum
© 2017 Steve Matson
Trifolium subterraneum
© 2008 Steve Matson
Trifolium subterraneum
© 2024 Alaine Arslan

Triteleia laxa    Ithuriel's spear
native
Perennial herb

THEMIDACEAE

Triteleia laxa
© 2018 Gary McDonald
Triteleia laxa
© 2018 Tim Lewis
Triteleia laxa
© 2019 Matt Berger

Vicia sativa    Spring vetch
non-native
Annual herb, Vine

FABACEAE

Vicia sativa
© 2022 David Wolfson
Vicia sativa
© 2019 Cynthia Powell
Vicia sativa
© 2023 Ron Vanderhoff

Wyethia angustifolia    California compassplant,  Narrow leaf mule ears,  Narrow leaved mule ears
native
Perennial herb

ASTERACEAE

Wyethia angustifolia
© 2024 Alaine Arslan
Wyethia angustifolia
© 2021 R.A. Chasey
Wyethia angustifolia
© 2009 BOB CASE

Wyethia glabra    Coast range mule ears,  Shining mule ears,  Smooth mule ears
native
Perennial herb

ASTERACEAE

Wyethia glabra
© 2020 Julie A. Kierstead
Wyethia glabra
© 2022 R.A. Chasey
Wyethia glabra
© 2019 Colleen Herr