Cottonwood Pass
Cottonwood Pass: Southern Diablo Range along Highway 41 corridor, northeastern corner of San Luis Obispo County San Luis Obispo County |
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| David Keil / CNPS-SLO (2019-06-09) |
| 204 PLANTS |
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Achillea millefolium Common yarrow
native
Perennial herb  2022 Andy Ford
 2014 James Gonsman
 2023 Ron Vanderhoff
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Achyrachaena mollis Blow-Wives
native
Annual herb  2015 Diane Etchison
 2019 Deanna Wargowski
 2021 Cynthia Powell
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Acmispon brachycarpus Short podded lotus
native
Annual herb  2005 Steve Matson
 2005 Steve Matson
 2018 Steve Matson
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Acmispon wrangelianus Chilean trefoil
native
Annual herb  2021 Jamie Spielmann
 2018 Gary McDonald
 2022 Richard Sullivan
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Allium crispum Crinkled onion
native
Perennial herb (bulb)  2023 Bryant Baker
 2017 Joe Engelbrecht
 ©2012 Gary McDonald
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Allium howellii var. howellii Howell's onion
• rare native
Perennial herb (bulb)  2023 R.A. Chasey
 2019 Matt Berger
 2019 Matt Berger
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Allophyllum gilioides ssp. gilioides Dense false gilia, Dense false gilyflower
native
Annual herb  2019 Matt Berger
 2021 Helen Hancock
 2019 Matt Berger
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Amsinckia intermedia Common fiddleneck
native
Annual herb  2020 Matt Berger
 2019 Ron Vanderhoff
 2021 David popp
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Amsinckia lycopsoides Bugloss fiddleneck, Tarweed fiddleneck
native
Annual herb  2021 David popp
 2023 Catherine Chang
 2022 Catherine Chang
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Amsinckia tessellata var. gloriosa Bristly fiddleneck, Large flowered devil's fiddleneck
native
Annual herb  2018 Richard Spjut
 2019 Susan McDougall
 2020 Angelique Herman
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Amsinckia tessellata var. tessellata Bristly fiddleneck, Devil's lettuce
native
Annual herb  2016 James Gonsman
 2014 Steve Matson
 2022 Mike Russler
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Ancistrocarphus filagineus False neststraw, Woolly fishhooks
native
Annual herb  2020 Matt Berger
 2019 Gerald Carr
 2021 Jacob Smith
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Androsace elongata ssp. acuta California androsace, California rockjasmine
• rare native
Annual herb  2023 Helen Hancock
 2022 Catherine Chang
 2022 R.A. Chasey
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Antirrhinum ovatum Oval leaved snapdragon
• rare native
Annual herb  2022 Mike Russler
 2022 Mike Russler
 2022 Mike Russler
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Artemisia californica California sagebrush, Coast sagebrush, Coastal sage brush
native
Shrub  2018 James Gonsman
 2022 Julia Markey
 2020 Ron Vanderhoff
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Astragalus asymmetricus San joaquin milk vetch, San joaquin milkvetch
native
Perennial herb  2020 Susan McDougall
 2020 Susan McDougall
 2023 Catherine Chang
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Astragalus didymocarpus var. didymocarpus Common dwarf milkvetch, Dwarf white milkvetch, Two seeded milk vetch
native
Annual herb  2016 Steve Matson
 2016 Steve Matson
 2016 Steve Matson
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Astragalus douglasii var. douglasii Douglas's milkvetch
native
Perennial herb  2019 Diane Etchison
 2016 Steve Matson
 2016 Steve Matson
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Astragalus gambelianus Dwarf loco weed, Gambel's dwarf milk vetch, Gambel's locoweed
native
Annual herb  2020 Ron Vanderhoff
 2019 Ron Vanderhoff
 2022 Mike Russler
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Astragalus oxyphysus Stanislaus milkvetch
native
Perennial herb  2020 David Greenberger
 2016 Steve Matson
 2016 Steve Matson
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Athysanus pusillus Athysanus, Common sandweed, Dwarf athysanus
native
Annual herb  2021 Paul Aigner
 2008 Steve Matson
 2022 Catherine Chang
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Atriplex coronata var. coronata Crownscale
• rare native
Annual herb  2021 Cynthia Powell
 2021 Cynthia Powell
 2021 Cynthia Powell
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Atriplex fruticulosa Ball saltbush, Valley saltbush
native
Perennial herb  2023 R.A. Chasey
 2017 Adam Chasey
 2021 Cynthia Powell
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Avena barbata Slender oat, Slim oat
• invasive non-native
Annual grass  2018 Julian Geoghegan
 2023 David popp
 2019 Ron Vanderhoff
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Avena fatua Wild oat, Wildoat
• invasive non-native
Annual grass  2018 Gary McDonald
 2023 Ron Vanderhoff
 2023 Ron Vanderhoff
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Bowlesia incana Hoary bowlesia
native
Annual herb  2019 Diane Renshaw
 2019 Diane Renshaw
 2017 Gary McDonald
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Bromus diandrus Bromegrass, Ripgut brome, Ripgut grass
• invasive non-native
Annual grass  2022 Ron Vanderhoff
 2021 Richard Spjut
 2022 Ron Vanderhoff
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Bromus madritensis Foxtail chess, foxtail brome, Madrid brome, Spanish brome
non-native
Annual grass  2022 Steve Matson
 2020 Hailey Laskey
 2015 Chris Jaster
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Bromus rubens Red brome
• invasive non-native
Annual grass  2015 Chris Jaster
 2015 jamie smith
 2018 Gary McDonald
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Calandrinia menziesii red maids, Calandrinia
native
Annual herb  2019 Ron Vanderhoff
 2019 Ron Vanderhoff
 2019 Ron Vanderhoff
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Carduus pycnocephalus Italian thistle
• invasive non-native
Annual herb  2019 Gary McDonald
 2008 Zoya Akulova
 2017 Gary McDonald
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Castilleja exserta ssp. exserta Exserted indian paintbrush, Pale purple owlclover, Purple owl's clover
native
Annual herb  2020 David Greenberger
 2019 Ron Vanderhoff
 2023 R.A. Chasey
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Castilleja subinclusa var. jepsonii Franciscan paint brush, Longleaf indian paintbrush
native
Perennial herb  2022 Mike Russler
 2022 Dianne Lake
 2022 Zoya Akulova-Barlow
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Centaurea melitensis Maltese star thistle, Napa star thistle, Tocalote
• invasive non-native
Annual herb  2019 Ron Vanderhoff
 2020 Ron Vanderhoff
 2020 Laura Anna Arellano
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Centaurea solstitialis Barnaby's thistle, Yellow star thistle
• invasive non-native
Annual herb  2022 Cynthia Powell
 2019 Arlee Montalvo
 2022 Mary Herr
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Centromadia pungens ssp. pungens Common tarweed
native
Annual herb  2022 Cynthia Powell
 2021 Mike Russler
 2022 Cynthia Powell
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Chaenactis glabriuscula var. glabriuscula Common yellow chaenactis, Yellow pincushion
native
Annual herb  2020 David Greenberger
 2020 R.A. Chasey
 2020 R.A. Chasey
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Chaenactis glabriuscula var. megacephala Big headed yellow chaenactis, Yellow pincushion
native
Annual herb  2017 Ryan Kelly
 2017 Ryan Kelly
 2009 Barry Breckling
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Chaenactis stevioides Desert pincushion, Esteve pincushion
native
Annual herb  2020 Mitchell Coleman
 2019 Matt Berger
 2022 Steve Matson
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Chorizanthe biloba var. biloba Two lobed spineflower, Twolobe spineflower
native
Annual herb  2006 Laura Ann Eliassen
 2013 Chris Winchell
 2013 Chris Winchell
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Chorizanthe ventricosa Priest valley spineflower
• rare native
Annual herb  2014 Neal Kramer
 2023 Ryan O'Dell
 2014 Neal Kramer
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Chorizanthe xanti var. xanti Riverside spineflower, Xantus' spineflower
native
Annual herb  2021 Mike Russler
 2020 Mike Russler
 2021 Mike Russler
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Cirsium occidentale var. venustum Cobwebby thistle, Red thistle, Venus thistle
native
Perennial herb  2020 Stacie Wolny
 2010 James M. Andre
 2020 Sara Timby
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Clarkia cylindrica ssp. cylindrica Speckled clarkia
native
Annual herb  2019 David Greenberger
 2019 Bryant Baker
 2020 Steve Laymon
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Clarkia purpurea ssp. quadrivulnera Four-spot, Purple clarkia, Purple godetia
native
Annual herb  2014 Steve Matson
 2019 Joe Engelbrecht
 2021 R.A. Chasey
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Clarkia unguiculata Elegant clarkia, Mountain garland, Woodland clarkia
native
Annual herb  2019 David Greenberger
 2021 Mike Russler
 2022 Suzanne L. Weakley
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Claytonia exigua ssp. exigua Little spring beauty, Serpentine springbeauty, Viridis
native
Annual herb  2021 Zoya Akulova-Barlow
 2022 Mike Russler
 2003 James B. Gratiot
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Claytonia perfoliata ssp. perfoliata Claytonia, Miner's lettuce
native
Annual herb  2008 Steve Matson
 2008 Steve Matson
 2008 Steve Matson
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Collinsia heterophylla Purple chinese houses
native
Annual herb  2022 Mary Ann Machi
 2019 David Greenberger
 2019 Ron Vanderhoff
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Collinsia sparsiflora var. collina Hillside collinsia
native
Annual herb  2021 Helen Hancock
 2022 Mike Russler
 2022 Mike Russler
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Conium maculatum Poison hemlock
• invasive non-native
Perennial herb  2019 James Bailey
 2013 Toni Corelli
 2016 Cynthia Powell
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Convolvulus simulans Small flowered morning glory
• rare native
Annual herb  2016 Ron Vanderhoff
 2017 James Bailey
 2023 David Gowen
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Corethrogyne filaginifolia Common sandaster
native
Perennial herb  2022 Mike Russler
 2018 Ron Vanderhoff
 2021 Mike Russler
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Crassula connata Pigmy weed, Sand pygmy weed, Sand pygmyweed
native
Annual herb  2020 Ron Vanderhoff
 2019 Ron Vanderhoff
 2019 Ron Vanderhoff
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Cryptantha barbigera var. barbigera Bearded cryptantha
native
Annual herb  2014 Steve Matson
 2012 Terrence Gosliner
 2014 Steve Matson
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Cryptantha clevelandii var. florosa Coastal cryptantha
native
Annual herb  2020 David Greenberger
 2020 Ryan Carle
 2023 Ken-ichi Ueda
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Cryptantha intermedia var. intermedia Common cryptantha
native
Annual herb  2019 Ron Vanderhoff
 2021 Ron Vanderhoff
 2019 Ron Vanderhoff
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Cryptantha nemaclada Colusa cryptantha
native
Annual herb  2011 Steve Matson
 2011 Steve Matson
 Donald Myrick1999 California Academy of Sciences
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Cryptantha nevadensis var. rigida Rigid cryptantha
native
Annual herb  2016 Bill Thiessen
 2019 Mary Merriman
 2016 Bill Thiessen
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Cryptantha oxygona Sharp nut cryptantha, Sharpnut cryptantha
native
Annual herb  2022 Steve Matson
 2022 Steve Matson
 2020 Matt Berger
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Deinandra halliana Hall's tarplant
• rare native
Annual herb  2023 R.A. Chasey
 2023 R.A. Chasey
 2023 R.A. Chasey
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Deinandra kelloggii Kellogg's tarweed
native
Annual herb  2021 Mike Russler
 2023 R.A. Chasey
 2021 Mike Russler
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Deinandra pallida Kern tarweed
native
Annual herb  2019 Diane Etchison
 2021 Mike Russler
 2010 Neal Kramer
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Deinandra pentactis Salinas river tarweed
native
Annual herb  2015 Richard Spellenberg
 2015 Richard Spellenberg
 2023 Ryan O'Dell
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Delphinium gypsophilum Gypsum loving larkspur, Pinoche creek larkspur
native
Perennial herb  2022 Mike Russler
 2022 Mike Russler
 2016 Steve Matson
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Dipterostemon capitatus ssp. capitatus Blue dicks
native
Perennial herb  2023 Alaine Arslan
 2016 Steve Matson
 2008 Steve Matson
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Elymus glaucus ssp. glaucus Blue wild rye, Blue wildrye, Western rye grass
native
Perennial grass  2014 Toni Corelli
 2021 Arlee Montalvo
 2022 Ron Vanderhoff
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Elymus multisetus Big squirreltail grass
native
Perennial grass  2019 David popp
 2019 Ron Vanderhoff
 2021 Denise Defreese
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Ephedra viridis Green ephedra, Mormon tea, Mountain ephedra
native
Shrub  2021 Bryant Baker
 2021 Bryant Baker
 2021 Bryant Baker
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Eremalche parryi ssp. kernensis Kern mallow
• rare native
Annual herb  2020 David Greenberger
 2018 Sarah Termondt
 2023 Mike Russler
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Eremothera boothii ssp. decorticans Shredding evening-primrose
native
Annual herb  2019 Matt Berger
 2020 David Greenberger
 2017 Bonnie Nickel
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Ericameria linearifolia Interior goldenbush, Linear leaved goldenbush, Narrowleaf goldenbush
native
Shrub  2015 James Gonsman
 2022 Suzanne L. Weakley
 2014 Steve Matson
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Erigeron canadensis Canada horseweed
native
Annual herb  2017 Gary McDonald
 2017 Gary McDonald
 2022 Mike Russler
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Eriogonum angulosum Angled stem buckwheat, Anglestem buckwheat
native
Annual herb  2021 Mike Russler
 2021 Mike Russler
 2009 Keir Morse
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Eriogonum covilleanum Coville's buckwheat
native
Annual herb  2022 Mike Russler
 2022 Mike Russler
 2022 Mike Russler
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Eriogonum elongatum var. elongatum Long stemmed buckwheat
native
Perennial herb  2017 Ron Vanderhoff
 2019 Aaron Echols
 2021 Mike Russler
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Eriogonum fasciculatum var. foliolosum California buckwheat, Eastern mojave buckwheat, Red topped buckwheat
native
Shrub  2016 Michael Mitchell
 2015 Michael Mitchell
 2015 Michael Mitchell
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Eriogonum fasciculatum var. polifolium California buckwheat, Eastern mojave buckwheat
native
Shrub  2020 Ron Vanderhoff
 2021 Mike Russler
 2022 Steve Matson
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Eriogonum nudum var. indictum Naked buckwheat, Protruding buckwheat
• rare native
Perennial herb  2021 Mike Russler
 2021 Mike Russler
 2021 Mike Russler
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Eriogonum roseum Wand buckwheat
native
Annual herb  2019 Matt Berger
 2014 Steve Matson
 2014 Steve Matson
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Eriogonum temblorense Temblor buckwheat
• rare native
Annual herb  2023 Matt Berger
 2023 Matt Berger
 2023 Matt Berger
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Eriogonum viridescens Bright green buckwheat, Twotooth buckwheat
native
Annual herb  2022 Ryan O'Dell
 2019 Matt Berger
 2021 Mike Russler
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Eriophyllum confertiflorum var. confertiflorum Golden yarrow, Yellow yarrow
native
Shrub  2013 James Gonsman
 2020 Mary Conway
 2020 Ron Vanderhoff
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Erodium botrys Big heron bill, Broad leaf filaree, Long beaked filaree
non-native
Annual herb  2014 Bryan Derr
 2017 Gary McDonald
 2015 Ken Lunders
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Erodium brachycarpum Foothill filaree, Short fruited filaree, Shortfruit stork's bill
• invasive non-native
Annual herb  2016 Bob van Duinen
 2020 Angelique Herman
 2016 Steve Matson
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Erodium cicutarium Coastal heron's bill, Red stemmed filaree, Redstem stork's bill
• invasive non-native
Annual herb  2022 Steve Matson
 2020 Julia Markey
 2022 Steve Matson
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Erodium moschatum Musky stork's bill, White stemmed filaree, Whitestem filaree
• invasive non-native
Annual herb  2016 Steve Matson
 2016 James Bailey
 2018 Stacie Wolny
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Erythranthe cardinalis Cardinal monkey flower
native
Perennial herb  2021 Mike Russler
 2017 Aaron Echols
 2021 Mike Russler
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Eschscholzia californica California poppy
native
Annual, Perennial herb  2019 Dee Shea Himes
 2021 Ron Vanderhoff
 2019 Amy Rapport
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Eschscholzia hypecoides Leafy stemmed poppy, San benito poppy
• rare native
Annual herb  2022 Mike Russler
 2022 Mike Russler
 2022 Mike Russler
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Eschscholzia lemmonii ssp. lemmonii Lemmon's poppy
native
Annual herb  2021 R.A. Chasey
 2011 Neal Kramer
 2011 Neal Kramer
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Eschscholzia minutiflora Coville s poppy, Pygmy poppy
native
Annual herb  2020 David Greenberger
 2022 Steve Matson
 2017 Diane Etchison
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Euphorbia spathulata Reticulate seeded spurge, Warty spurge
native
Annual herb  2021 R.A. Chasey
 2014 Steve Matson
 2014 Steve Matson
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Festuca microstachys Small fescue
native
Annual grass  2022 Aaron Sunshine
 2011 Steve Matson
 2011 Steve Matson
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Festuca myuros Rattail sixweeks grass
• invasive non-native
Annual grass  2021 Aaron Echols
 2021 Ron Vanderhoff
 2022 John Rawlings
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Festuca perennis Italian rye grass
• invasive non-native
Annual, Perennial grass  2019 Ron Vanderhoff
 2017 Gary McDonald
 2021 Ron Vanderhoff
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Fritillaria agrestis Stinkbells
• rare native
Perennial herb (bulb)  2023 Catherine Chang
 2022 Dee Shea Himes
 2021 Damon Tighe
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Galium aparine Cleavers, Common bedstraw, Goose grass
native
Annual herb  2020 Ron Vanderhoff
 2005 Steve Matson
 2020 Ron Vanderhoff
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Gilia brecciarum Nevada gilia, Small gilia
native
Annual herb  2022 Bob Sweatt
 2022 Bob Sweatt
 2016 Bob Sweatt
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Gilia tenuiflora ssp. amplifaucalis Greater yellowthroat gilia, Spreading slender flowered gilia
• rare native
Annual herb |
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Gilia tricolor ssp. diffusa Bird's eye gilia, Bird's eyes
native
Annual herb  2019 David Magney
 2019 Matt Berger
 2019 Matt Berger
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Gilia tricolor ssp. tricolor Bird's eye gilia, Bird's eyes
native
Annual herb  2021 Steve Matson
 2021 Steve Matson
 2021 Steve Matson
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Grindelia hirsutula Gumweed, Hairy gumweed
native
Perennial herb  2020 stephen rosenthal
 2015 Ken Lunders
 2020 R.A. Chasey
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Gutierrezia californica California matchweed, Matchweed, snakeweed, San joaquin snakeweed
native
Perennial herb, Shrub  2021 Helen Hancock
 2010 Neal Kramer
 2018 Ron Vanderhoff
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Hazardia stenolepis Narrow scaled goldenbush, Serpentine bristleweed
native
Shrub (stem succulent)  2012 George Butterworth
 2012 George Butterworth
 2011 George Butterworth
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Helianthus annuus Common sunflower, Hairy leaved sunflower, Sunflower
native
Annual herb  2019 Bob Case
 2019 Laura Moon
 2021 Mike Russler
|
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Hirschfeldia incana Mediterranean hoary mustard, Short podded mustard, Summer mustard
• invasive non-native
Perennial herb  2017 Gary McDonald
 2017 Gary McDonald
 2022 Ron Vanderhoff
|
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Hollisteria lanata False spikeflower, False spineflower
native
Annual herb  2021 Mike Russler
 2021 Mike Russler
 2016 Steve Matson
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Holocarpha heermannii Heermann's tarweed
native
Annual herb  2018 Richard Spjut
 2022 Cynthia Powell
 2022 Cynthia Powell
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Hordeum murinum ssp. leporinum Farmer's foxtail, Foxtail barley, Hare barley
non-native
Annual grass  2022 Ron Vanderhoff
 2021 Al Keuter
 2021 Ron Vanderhoff
|
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Hordeum vulgare Common barley
non-native
Annual grass  2019 Ron Vanderhoff
 2019 Ron Vanderhoff
 2022 Ron Vanderhoff
|
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Isocoma acradenia var. bracteosa Bracted alkali goldenbush
native
Shrub  2021 Mike Russler
 2021 Mike Russler
 2010 Neal Kramer
|
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Juniperus californica California juniper
native
Shrub  2019 Patrick Furtado
 2017 Gary McDonald
 2014 Ron Vanderhoff
|
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Lactuca serriola Prickly lettuce, Prickly wild lettuce
• invasive non-native
Annual herb  2017 Gary McDonald
 2020 Mark Kircher
 2009 Neal Kramer
|
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Lagophylla ramosissima Branched lagophylla, Common hareleaf
native
Annual herb  2019 Diane Etchison
 2021 Dee Shea Himes
 2020 Ken Hickman
|
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Lamarckia aurea Goldentop grass
non-native
Annual grass  2017 B.J. Dion
 2019 Ron Vanderhoff
 2015 James Gonsman
|
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Lasthenia gracilis Needle goldfields
native
Annual herb  2016 Michael Mitchell
 2019 Susan McDougall
 2014 Michael Mitchell
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Lasthenia minor Coastal goldfields, Smooth lasthenia, Woolly goldfields
native
Annual herb  2007 Toni Corelli
 2019 James Gonsman
 2015 Toni Corelli
|
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Layia glandulosa White layia, White tidy tips, Whitedaisy tidytips
native
Annual herb  2016 James Gonsman
 2017 Alison Sheehey
 2009 Keir Morse
|
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Layia heterotricha Pale yellow layia, Paleyellow tidytips
• rare native
Annual herb  2021 Mike Russler
 2021 Mike Russler
 2021 Mike Russler
|
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Layia munzii Munz's tidy tips, Munz's tidytips
• rare native
Annual herb  2006 Steve Matson
 2015 Craig Fiehler
 2006 Steve Matson
|
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Layia pentachaeta ssp. albida Sierra tidytips, White sierra tidy tips
native
Annual herb  2019 Mary Merriman
 2018 Richard Spjut
 2011 Richard Spjut
|
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Lemna sp. Small Tree-Mallow
|
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Lepidium nitidum Peppergrass, Shining pepper grass, Shining pepperweed
native
Annual herb  2020 Linda Pardy
 2019 Gary McDonald
 2016 Steve Matson
|
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Leptosiphon parviflorus Variable linanthus
native
Annual herb  2008 Keir Morse
 2008 Keir Morse
 2008 Keir Morse
|
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Leptosyne bigelovii Bigelow coreopsis
native
Annual herb  2019 Diane Etchison
 2020 John L. Thompson
 2020 Matt Berger
|
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Leptosyne calliopsidea Leafy stemmed coreopsis
native
Annual herb  2020 David Greenberger
 2021 R.A. Chasey
 2020 David Greenberger
|
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Linanthus dichotomus ssp. dichotomus Evening snow
native
Annual herb  2019 Jacob Smith
 2019 Jacob Smith
 2008 Steve Matson
|
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Lithophragma parviflorum var. parviflorum Pink woodland star, Smallflower woodland star
native
Perennial herb  2013 Jean Pawek
 2019 Gary McDonald
 2013 Jean Pawek
|
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Logfia filaginoides California cottonrose
native
Annual herb  2019 Steve Matson
 2019 Steve Matson
 2019 Matt Berger
|
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Lomatium utriculatum Bladder parsnip, Common lomatium, Hog fennel
native
Perennial herb  2006 Steve Matson
 2019 Eliezer Margolis
 2015 James Gonsman
|
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Lupinus albifrons var. albifrons Silver bush lupine, Silver lupine
native
Shrub  2012 Michael Mitchell
 2020 Richard Spjut
 2020 Richard Spjut
|
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Lupinus bicolor Annual lupine, Bicolored lupine, Miniature lupine
native
Annual, Perennial herb  2022 Mike Russler
 2022 Mike Russler
 2019 Gary McDonald
|
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Lupinus microcarpus var. microcarpus Chick lupine, Valley lupine
native
Annual herb  2016 Michael Mitchell
 2014 Michael Mitchell
 2015 Michael Mitchell
|
|
Lupinus succulentus Arroyo lupine, Hollowleaf annual lupine, Succulent lupine
native
Annual herb  2018 Stacie Wolny
 2018 Stacie Wolny
 2018 Stacie Wolny
|
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Madia radiata Golden madia, Showy madia
• rare native
Annual herb  2023 Jacob Smith
 2016 George Butterworth
 2016 George Butterworth
|
|
Malacothrix coulteri Snake's head
native
Annual herb  2020 David Greenberger
 2020 Matt Berger
 2020 David Greenberger
|
|
Malacothrix floccifera Woolly dandelion, Woolly desertdandelion, Woolly malacothrix
native
Annual herb  2019 David Greenberger
 2020 David Greenberger
 2020 Kevin Janicki
|
|
Malva parviflora Cheeseweed mallow
non-native
Annual herb  2022 Mike Russler
 2022 Donald Burk
 2022 Mike Russler
|
|
Marah fabacea California man-root
native
Perennial herb, Vine  2018 Karen Scheuermann
 2021 Cyril Guyot
 2018 Gary McDonald
|
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Matricaria discoidea Pineapple weed
native
Annual herb  2008 Steve Matson
 2019 Diane Etchison
 2018 Stacie Wolny
|
|
Medicago polymorpha Bur clover, Bur medic, California burclover
• invasive non-native
Annual herb  2019 Gary McDonald
 2019 Gary McDonald
 2019 Gary McDonald
|
|
Melica californica California melicgrass
native
Perennial grass  2023 John Rawlings
 2021 John Rawlings
 2022 John Rawlings
|
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Melilotus indicus Annual yellow sweetclover, Sourclover
non-native
Annual herb  2019 Randy Huey
 2019 Randy Huey
 2017 Rosalie Benitez
|
|
Mentzelia pectinata San joaquin blazing star, San joaquin blazingstar
native
Annual herb  2021 Mike Russler
 2021 Mike Russler
 2021 Mike Russler
|
|
Micranthes californica Greene's saxifrage
native
Perennial herb  2020 Cara Wilcox
 2016 Steve Matson
 2016 Steve Matson
|
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Micropus californicus var. californicus Q tips, Slender cottonweed
native
Annual herb  2006 Steve Matson
 2021 Ron Vanderhoff
 null
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Microseris campestris San joaquin microseris, San joaquin silverpuffs
native
Annual herb  2022 Cynthia Powell
 2022 Cynthia Powell
 2022 Dianne Lake
|
|
Microseris douglasii ssp. douglasii Douglas' microseris, Douglas' silverpuffs
native
Annual herb  2022 Steve Laymon
 2019 John Rawlings
 2022 Mike Russler
|
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Microsteris gracilis Slender phlox
native
Annual herb  2021 Mike Russler
 2003 Steve Matson
 2003 Steve Matson
|
|
Mirabilis laevis var. crassifolia California four o'clock
native
Perennial herb  2021 Ron Vanderhoff
 2018 Ron Vanderhoff
 2010 Thomas Stoughton
|
|
Monolopia lanceolata Common monolopia
native
Annual herb  2016 Steve Matson
 2016 Steve Matson
 2016 Steve Matson
|
|
Navarretia mitracarpa Paso robles navarretia
native
Annual herb  2022 Mike Russler
 2022 Mike Russler
 2019 David Greenberger
|
|
Nemophila menziesii Baby blue eyes
native
Annual herb  2019 Matt Berger
 2019 Diane Etchison
 2019 Ron Vanderhoff
|
|
Nemophila pedunculata Littlefoot nemophila, Meadow nemophila
native
Annual herb  2019 Matt Berger
 2003 Steve Matson
 2023 Helen Hancock
|
|
Pectocarya anisocarpa Small Tree-Mallow
|
|
Pectocarya linearis ssp. ferocula Sagebrush combseed, Slender comb seed, Slender pectocarya
native
Annual herb  2021 Ron Vanderhoff
 2019 Ron Vanderhoff
 2016 Ron Vanderhoff
|
|
Pectocarya setosa Moth combseed, Stiff stemmed comb bur
native
Annual herb  2014 Steve Matson
 2020 Matt Berger
 2014 Steve Matson
|
|
Phacelia distans Common phacelia, Distant phacelia, Wild heliotrope
native
Annual herb  2023 Richard Spjut
 2023 Richard Spjut
 2022 Mike Russler
|
|
Phacelia douglasii var. petrophila Douglas' phacelia, Rockloving phacelia
native
Annual herb  2020 David Greenberger
 2021 R.A. Chasey
 2021 R.A. Chasey
|
|
Phacelia fremontii Fremont's phacelia
native
Annual herb  2022 Steve Matson
 2022 Mike Russler
 2014 Steve Conger
|
|
Phacelia tanacetifolia Lacy phacelia, Tansy leafed phacelia
native
Annual herb  2022 Mike Russler
 2022 Mike Russler
 2014 Steve Matson
|
|
Pholistoma membranaceum White fiesta flower, White fiestaflower
native
Annual herb  2023 David Wolfson
 2019 Gary McDonald
 2022 Mike Russler
|
|
Plagiobothrys arizonicus Arizona popcorn flower, Arizona popcornflower
native
Annual herb  2020 Steve Matson
 2019 Richard Spjut
 2020 Steve Matson
|
|
Plagiobothrys canescens Grey popcorn flower, Valley popcorn flower, Valley popcornflower
native
Annual herb  2016 Steve Matson
 2016 Steve Matson
 2016 Steve Matson
|
|
Plantago erecta California plantain, Dotseed plantain, Foothill plantain
native
Annual herb  2021 Charles Russell
 2008 Margo Bors
 2022 Mike Russler
|
|
Platystemon californicus Cream cups, Creamcups
native
Annual herb  2019 Diane Etchison
 2022 John L. Thompson
 2020 Mitchell Coleman
|
|
Poa secunda ssp. secunda One sided blue grass, Pine bluegrass, Sandberg's bluegrass
native
Perennial grass  2018 Ron Vanderhoff
 2018 Ron Vanderhoff
 2018 Ron Vanderhoff
|
|
Polypogon interruptus Ditch beard grass, Ditch rabbitsfoot grass
non-native
Perennial grass  2022 John Rawlings
 2022 John Rawlings
 2020 Ron Vanderhoff
|
|
Populus fremontii ssp. fremontii Fremont cottonwood
native
Tree  2019 Stella Yang
 2020 David popp
 2020 Susan McDougall
|
|
Quercus john-tuckeri Tucker oak, Tucker's oak
native
Tree  2019 Richard Spjut
 2015 Keir Morse
 2020 Neal Kramer
|
|
Quercus lobata California white oak, Valley oak
native
Tree  2018 stephen rosenthal
 2023 Helen Hancock
 2020 Charles Russell
|
|
Salix laevigata Polished willow, Red willow
native
Tree  2017 Steve Matson
 2019 Barbara Brydolf
 2022 Mark Gary
|
|
Salvia columbariae Chia sage
native
Annual herb  2020 Ron Vanderhoff
 2022 Mike Russler
 2022 Mike Russler
|
|
Salvia mellifera Black sage
native
Shrub  2017 Steve Matson
 2022 Suzanne L. Weakley
 2019 Diane Etchison
|
|
Sambucus nigra ssp. caerulea Blue elderberry
native
Tree, Shrub  2021 Mike Russler
 2020 Diane Etchison
 2022 El Byrne
|
|
Sanicula bipinnata Poison sanicle
native
Perennial herb  2008 Steve Matson
 2009 Keir Morse
 2022 R.A. Chasey
|
|
Senecio californicus California butterweed, California groundsel, California ragwort
native
Annual herb  2019 Diane Etchison
 2023 Ron Vanderhoff
 2022 Ron Vanderhoff
|
|
Senecio vulgaris Common groundsel, Old man in the spring, Old man of spring
non-native
Annual herb  2017 Barbara Boethling
 2019 Ron Vanderhoff
 2021 Toni Corelli
|
|
Sinapis arvensis Charlock mustard
• invasive non-native
Annual herb  2020 Randy Huey
 2021 Randy Huey
 2022 Mike Russler
|
|
Sisymbrium orientale Indian hedge mustard, Oriental hedge mustard
non-native
Annual, Perennial herb  2019 Diane Etchison
 2021 Paul Aigner
 2021 Ron Vanderhoff
|
|
Solanum umbelliferum var. umbelliferum Blue witch nightshade, Bluewitch nightshade
native
Shrub  2022 Mike Russler
 2014 Steve Matson
 2014 Steve Matson
|
|
Stachys pycnantha Short spike hedge nettle, Shortspike hedgenettle
native
Perennial herb  2019 David Wolfson
 2018 Julian Geoghegan
 2011 Neal Kramer
|
|
Stebbinsoseris heterocarpa Grassland stebbinsoseris
native
Annual herb  2019 Ron Vanderhoff
 2019 Ron Vanderhoff
 2017 Diane Etchison
|
|
Stellaria nitens Shining chickweed, Shiny chickweed, Smooth chickweed
native
Annual herb  2020 Ken Hickman
 2022 Catherine Chang
 2017 David popp
|
|
Stephanomeria pauciflora Brownplume wirelettuce, Desert straw, Wire lettuce
native
Perennial herb  2015 Steve Matson
 2015 Steve Matson
 2015 Steve Matson
|
|
Stipa speciosa Desert needle grass
native
Perennial grass  2011 Steve Matson
 2022 Dana York
 2018 Liz Block
|
|
Streptanthus anceps Lemmon's mustard
native
Annual herb  2006 Steve Matson
 2006 Steve Matson
 2006 Steve Matson
|
|
Streptanthus lasiophyllus Small Tree-Mallow
|
|
Streptanthus lemmonii Lemmon's jewelflower, Lemmon's wild cabbage
• rare native
Annual herb  2017 Mitchell Coleman
 2023 Ellen Uhler
 2011 Dylan Neubauer
|
|
Tetrapteron graciliflorum Hill sun cup
native
Annual herb  2021 Charles Russell
 2009 Keir Morse
 2010 Richard Spjut
|
|
Thysanocarpus curvipes ssp. curvipes Fringe Pod
native
Annual herb  2019 Matt Berger
 2020 R.A. Chasey
 2022 Mike Russler
|
|
Thysanocarpus laciniatus Common lace pod, Mountain fringepod, Narrow leaved fringe pod
native
Annual herb  2021 Helen Hancock
 2008 Keir Morse
 2021 R.A. Chasey
|
|
Trifolium albopurpureum Indian clover, Rancheria clover
native
Annual herb  2021 Mike Russler
 2011 Jorg & Mimi Fleige
 2013 Zoya Akulova
|
|
Trifolium gracilentum Graceful clover, Pin point clover, Pinpoint clover
native
Annual herb  2016 Steve Matson
 2016 Steve Matson
 2016 Steve Matson
|
|
Trifolium willdenovii Tomcat clover
native
Annual herb  2019 Ron Vanderhoff
 2019 Ron Vanderhoff
 2018 Stacie Wolny
|
|
Uropappus lindleyi Silver puffs, Uropappus
native
Annual herb  2019 Zack Abbey
 2022 Mary Ann Machi
 2016 Ron Vanderhoff
|
|
Verbascum virgatum Wand mullein
non-native
Perennial herb  2019 Jerry Thornton
 2022 Amber Bedgood
 2021 Ron Vanderhoff
|
|
Zannichellia palustris Horned pondweed
native
Perennial herb  2021 Ron Vanderhoff
 2021 Ron Vanderhoff
 2021 Ron Vanderhoff
|
