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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 |
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| David Keil / CNPS-SLO (2019-06-09) | ||||||
| 204 PLANTS |
|
Achillea millefolium Common yarrow
native
Perennial herb 
© 2022 Andy Ford 
© 2020 Bob Sweatt 
© 2018 Gary McDonald |
|
Achyrachaena mollis Blow-Wives
native
Annual herb 
© 2015 Diane Etchison 
© 2022 Mike Russler 
© 2022 Mike Russler |
|
Acmispon brachycarpus hill lotus
native
Annual herb 
© 2023 R.A. Chasey 
© 2018 Steve Matson 
© 2018 Steve Matson |
|
Acmispon wrangelianus Wrangel lotus
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Allium crispum Crinkled onion
native
Perennial herb (bulb) 
© 2024 Steve Matson 
© 2024 Steve Matson 
© 2024 Steve Matson |
|
Allium howellii var. howellii Howell's onion
• rare native
Perennial herb (bulb) 
© 2023 R.A. Chasey 
© 2023 Mike Russler 
© 2019 Matt Berger |
|
Allophyllum gilioides ssp. gilioides Dense false gilia, Dense false gilyflower
native
Annual herb 
© 2024 Helen Hancock 
© 2022 Mike Russler 
© 2019 Matt Berger |
|
Amsinckia intermedia Common fiddleneck
native
Annual herb 
© 2020 Matt Berger 
© 2019 Ron Vanderhoff 
© 2021 David popp |
|
Amsinckia lycopsoides Bugloss fiddleneck, Tarweed fiddleneck
native
Annual herb 
© 2021 David popp 
© 2023 Catherine Chang 
© 2022 Catherine Chang |
|
Amsinckia tessellata var. gloriosa Bristly fiddleneck, Large flowered devil's fiddleneck
native
Annual herb 
© 2024 Ryan O'Dell 
© 2019 Susan McDougall 
© 2018 Richard Spjut |
|
Amsinckia tessellata var. tessellata Bristly fiddleneck, Devil's lettuce
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Ancistrocarphus filagineus False neststraw, Woolly fishhooks
native
Annual herb 
© 2020 Matt Berger 
© 2019 Gerald Carr 
© 2021 Jacob Smith |
|
Androsace elongata ssp. acuta California androsace, California rockjasmine
• rare native
Annual herb 
© 2023 Catherine Chang 
© 2022 Catherine Chang 
© 2023 Helen Hancock |
|
Antirrhinum ovatum Oval leaved snapdragon
• rare native
Annual herb 
© 2013 Chris Winchell 
© 2013 Chris Winchell 
© 2022 Mike Russler |
|
Aphyllon californicum ssp. condensum California broomrape
native
Perennial herb (parasitic) 
© 2023 Paul Excoffier 
© 2024 Mike Russler 
© 2024 Mike Russler |
|
Artemisia californica California sagebrush, Coast sagebrush, Coastal sage brush
native
Shrub 
© 2018 James Gonsman 
© 2019 Aaron Echols 
© 2018 Ron Vanderhoff |
|
Astragalus asymmetricus San joaquin milk vetch, San joaquin milkvetch
native
Perennial herb 
© 2020 Susan McDougall 
© 2020 Susan McDougall 
© 2023 Catherine Chang |
|
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 |
|
Astragalus douglasii var. douglasii Douglas's milkvetch
native
Perennial herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Astragalus gambelianus Dwarf loco weed, Gambel's dwarf milk vetch, Gambel's locoweed
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2022 Mike Russler 
© 2024 R.A. Chasey |
|
Astragalus oxyphysus Stanislaus milkvetch
native
Perennial herb 
© 2020 David Greenberger 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Athysanus pusillus Athysanus, Common sandweed, Dwarf athysanus
native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Atriplex coronata var. coronata Crownscale
• rare native
Annual herb 
© 2023 R.A. Chasey 
© 2023 Cynthia Powell 
© 2021 Cynthia Powell |
|
Atriplex fruticulosa Ball saltbush, Valley saltbush
native
Perennial herb 
© 2023 R.A. Chasey 
© 2017 R.A. Chasey 
© 2024 R.A. Chasey |
|
Avena barbata Slender oat, Slim oat
• invasive non-native
Annual grass 
© 2018 Julian Geoghegan 
© 2023 David popp 
© 2019 Ron Vanderhoff |
|
Avena fatua Wild oat, Wildoat
• invasive non-native
Annual grass 
© 2018 Gary McDonald 
© 2023 Ron Vanderhoff 
© 2023 Matt Berger |
|
Bowlesia incana Hoary bowlesia
native
Annual herb 
© 2019 Diane Renshaw 
© 2019 Diane Renshaw 
© 2017 Gary McDonald |
|
Bromus arizonicus Arizona brome
native
Annual grass  © 2024 Matt C. Berger  © 2024 Matt C. Berger  © 2024 Matt C. Berger |
|
Bromus diandrus Bromegrass, Ripgut brome, Ripgut grass
• invasive non-native
Annual grass 
© Alize 
© 2021 Richard Spjut 
© 2024 David popp |
|
Bromus madritensis Foxtail chess, foxtail brome, Madrid brome, Spanish brome
non-native
Annual grass 
© 2022 Steve Matson 
© 2023 Stephen H Siemsen 
© 2015 Chris Jaster |
|
Bromus rubens Red brome
• invasive non-native
Annual grass 
© 2015 Chris Jaster 
© 2015 jamie smith 
© 2018 Gary McDonald |
|
Calandrinia menziesii red maids, Calandrinia
native
Annual herb 
© 2021 Mary Ann Machi 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Carduus pycnocephalus Italian thistle
• invasive non-native
Annual herb 
© 2019 Gary McDonald 
© 2023 Diana Wahl 
© 2023 Ron Vanderhoff |
|
Castilleja exserta ssp. exserta Exserted indian paintbrush, Pale purple owlclover, Purple owl's clover
native
Annual herb 
© 2020 David Greenberger 
© 2019 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Castilleja subinclusa var. jepsonii Franciscan paint brush, Longleaf indian paintbrush
native
Perennial herb 
© 2021 Dianne Lake 
© 2022 Dianne Lake 
© 2022 Zoya Akulova-Barlow |
|
Centaurea melitensis Maltese star thistle, Napa star thistle, Tocalote
• invasive non-native
Annual herb 
© 2019 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2020 Laura Anna Arellano |
|
Centaurea solstitialis Barnaby's thistle, Yellow star thistle
• invasive non-native
Annual herb 
© 2022 Cynthia Powell 
© 2019 Arlee Montalvo 
© 2022 Mary Herr |
|
Centromadia pungens ssp. pungens Common tarweed
native
Annual herb 
© 2022 Cynthia Powell 
© 2021 Mike Russler 
© 2024 Mike Russler |
|
Chaenactis glabriuscula var. glabriuscula Common yellow chaenactis, Yellow pincushion
native
Annual herb 
© 2020 David Greenberger 
© 2024 Mike Russler 
© 2024 Mike Russler |
|
Chaenactis glabriuscula var. megacephala Big headed yellow chaenactis, Yellow pincushion
native
Annual herb 
© 2024 Mike Russler 
© 2024 Mike Russler 
© 2024 Mike Russler |
|
Chaenactis stevioides Desert pincushion, Esteve pincushion
native
Annual herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Chorizanthe biloba var. biloba Two lobed spineflower, Twolobe spineflower
native
Annual herb  © 2006 Laura Ann Eliassen  © 2013 Chris Winchell  © 2013 Chris Winchell |
|
Chorizanthe ventricosa Priest valley spineflower
• rare native
Annual herb 
© 2014 Neal Kramer 
© 2023 Ryan O'Dell 
© 2014 Neal Kramer |
|
Chorizanthe xanti var. xanti Riverside spineflower, Xantus' spineflower
native
Annual herb 
© 2021 Mike Russler 
© 2020 Mike Russler 
© 2021 Mike Russler |
|
Cirsium occidentale var. venustum Cobwebby thistle, Red thistle, Venus thistle
native
Perennial herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Clarkia cylindrica ssp. cylindrica Speckled clarkia
native
Annual herb 
© 2019 David Greenberger 
© 2019 Bryant Baker 
© 2020 Steve Laymon |
|
Clarkia purpurea ssp. quadrivulnera Four-spot, Purple clarkia, Purple godetia
native
Annual herb 
© 2014 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Clarkia unguiculata Elegant clarkia, Mountain garland, Woodland clarkia
native
Annual herb 
© 2019 David Greenberger 
© 2019 Bryant Baker 
© 2021 Mike Russler |
|
Claytonia exigua ssp. exigua Little spring beauty, Serpentine springbeauty, Viridis
native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Claytonia perfoliata ssp. perfoliata Claytonia, Miner's lettuce
native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Collinsia heterophylla Purple chinese houses
native
Annual herb 
© 2022 Mary Ann Machi 
© 2019 David Greenberger 
© 2019 Ron Vanderhoff |
|
Collinsia sparsiflora var. collina Hillside collinsia
native
Annual herb 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2015 Steve Matson |
|
Conium maculatum Poison hemlock
• invasive non-native
Perennial herb 
© 2024 Cynthia Powell 
© 2013 Toni Corelli 
© 2016 Cynthia Powell |
|
Convolvulus simulans Small flowered morning glory
• rare native
Annual herb 
© 2016 Ron Vanderhoff 
© 2017 James Bailey 
© 2023 David Gowen |
|
Corethrogyne filaginifolia Common sandaster
native
Perennial herb 
© 2022 Mike Russler 
© 2018 Ron Vanderhoff 
© 2019 Diane Etchison |
|
Crassula connata Pigmy weed, Sand pygmy weed, Sand pygmyweed
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Susan McDougall |
|
Cryptantha barbigera var. barbigera Bearded cryptantha
native
Annual herb 
© 2014 Steve Matson 
© 2012 Terrence Gosliner 
© 2014 Steve Matson |
|
Cryptantha clevelandii var. florosa Coastal cryptantha
native
Annual herb 
© 2020 David Greenberger 
© 2024 Ron Vanderhoff 
© 2023 Ken-ichi Ueda |
|
Cryptantha intermedia var. intermedia Common cryptantha
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Cryptantha nemaclada Colusa cryptantha
native
Annual herb 
© 2024 Chloe and Trevor Van Loon 
© 2024 Chloe and Trevor Van Loon 
© 2024 Chloe and Trevor Van Loon |
|
Cryptantha nevadensis var. rigida Rigid cryptantha
native
Annual herb 
© 2016 Bill Thiessen 
© 2019 Mary Merriman 
© 2016 Bill Thiessen |
|
Cryptantha oxygona Sharp nut cryptantha, Sharpnut cryptantha
native
Annual herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2020 Matt Berger |
|
Cryptantha sparsiflora Slender cryptantha
native
Annual herb 
© 2023 R.A. Chasey 
© 2024 R.A. Chasey 
© 2024 R.A. Chasey |
|
Deinandra halliana Hall's tarplant
• rare native
Annual herb 
© 2023 R.A. Chasey 
© 2023 R.A. Chasey 
© 2023 R.A. Chasey |
|
Deinandra kelloggii Kellogg's tarweed
native
Annual herb 
© 2023 R.A. Chasey 
© 2024 Mike Russler 
© 2024 Mike Russler |
|
Deinandra pallida Kern tarweed
native
Annual herb 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2024 Bob Steele |
|
Deinandra pentactis Salinas river tarweed
native
Annual herb 
© 2024 Mike Russler 
© 2015 Richard Spellenberg 
© 2023 Ryan O'Dell |
|
Delphinium gypsophilum Gypsum loving larkspur, Pinoche creek larkspur
native
Perennial herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Dipterostemon capitatus ssp. capitatus Blue dicks
native
Perennial herb 
© 2008 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Elymus glaucus ssp. glaucus Blue wild rye, Blue wildrye, Western rye grass
native
Perennial grass 
© 2023 R.A. Chasey 
© 2021 Arlee Montalvo 
© 2022 Ron Vanderhoff |
|
Elymus multisetus Big squirreltail grass
native
Perennial grass 
© 2019 Ron Vanderhoff 
© 2023 Helen Hancock 
© 2021 Denise Defreese |
|
Ephedra viridis Green ephedra, Mormon tea, Mountain ephedra
native
Shrub 
© 2021 Bryant Baker 
© 2021 Bryant Baker 
© 2021 Bryant Baker |
|
Eremalche parryi ssp. kernensis Kern mallow
• rare native
Annual herb 
© 2020 David Greenberger 
© 2018 Sarah Termondt 
© 2023 Mike Russler |
|
Eremothera boothii ssp. decorticans Shredding evening-primrose
native
Annual herb 
© 2019 Matt Berger 
© 2020 David Greenberger 
© 2020 Bryant Baker |
|
Ericameria linearifolia Interior goldenbush, Linear leaved goldenbush, Narrowleaf goldenbush
native
Shrub 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Erigeron canadensis Canada horseweed
native
Annual herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2022 Mike Russler |
|
Eriogonum angulosum Angled stem buckwheat, Anglestem buckwheat
native
Annual herb 
© 2014 Steve Matson 
© 2016 Steve Matson 
© 2014 Steve Matson |
|
Eriogonum covilleanum Coville's buckwheat
native
Annual herb 
© 2022 Mike Russler 
© 2023 Matt Berger 
© 2022 Mike Russler |
|
Eriogonum elongatum var. elongatum Long stemmed buckwheat
native
Perennial herb 
© 2017 Ron Vanderhoff 
© 2019 Aaron Echols 
© 2021 Mike Russler |
|
Eriogonum fasciculatum var. foliolosum California buckwheat, Eastern mojave buckwheat, Red topped buckwheat
native
Shrub 
© 2016 Michael Mitchell 
© 2015 Michael Mitchell 
© 2015 Michael Mitchell |
|
Eriogonum fasciculatum var. polifolium California buckwheat, Eastern mojave buckwheat
native
Shrub 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Eriogonum nudum var. indictum Naked buckwheat, Protruding buckwheat
• rare native
Perennial herb 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2021 Mike Russler |
|
Eriogonum roseum Wand buckwheat
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2024 Mike Russler |
|
Eriogonum temblorense Temblor buckwheat
• rare native
Annual herb 
© 2023 Matt Berger 
© 2023 Matt Berger 
© 2023 Matt Berger |
|
Eriogonum viridescens Bright green buckwheat, Twotooth buckwheat
native
Annual herb 
© 2023 Matt Berger 
© 2019 Matt Berger 
© 2021 Mike Russler |
|
Eriophyllum confertiflorum var. confertiflorum Golden yarrow, Yellow yarrow
native
Shrub 
© 2023 Ryan O'Dell 
© 2013 James Gonsman 
© 2020 Ron Vanderhoff |
|
Erodium botrys Big heron bill, Broad leaf filaree, Long beaked filaree
non-native
Annual herb 
© 2006 Steve Matson 
© 2006 Steve Matson 
© 2006 Steve Matson |
|
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 |
|
Erodium cicutarium Coastal heron's bill, Red stemmed filaree, Redstem stork's bill
• invasive non-native
Annual herb 
© 2022 Steve Matson 
© 2008 Steve Matson 
© 2022 Steve Matson |
|
Erodium moschatum Musky stork's bill, White stemmed filaree, Whitestem filaree
• invasive non-native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Erythranthe cardinalis Cardinal monkey flower
native
Perennial herb 
© 2023 Steve Conger 
© 2014 James Gonsman 
© 2023 Mary Ann Machi |
|
Eschscholzia californica California poppy
native
Annual, Perennial herb 
© 2019 Dee Shea Himes 
© 2021 Ron Vanderhoff 
© 2019 Amy Rapport |
|
Eschscholzia hypecoides Leafy stemmed poppy, San benito poppy
• rare native
Annual herb 
© 2022 Mike Russler 
© 2022 Mike Russler 
© 2022 Mike Russler |
|
Eschscholzia lemmonii ssp. lemmonii Lemmon's poppy
native
Annual herb 
© 2023 Ryan O'Dell 
© 2023 Martin Schenker 
© 2023 Ryan O'Dell |
|
Eschscholzia minutiflora Coville s poppy, Pygmy poppy
native
Annual herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Euphorbia spathulata Reticulate seeded spurge, Warty spurge
native
Annual herb 
© 2008 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Festuca microstachys Small fescue
native
Annual grass 
© 2011 Steve Matson 
© 2024 Emily R. Allen 
© 2011 Steve Matson |
|
Festuca myuros Rattail sixweeks grass
• invasive non-native
Annual grass 
© 2021 Aaron Echols 
© 2021 Ron Vanderhoff 
© 2022 John Rawlings |
|
Festuca perennis Italian rye grass
• invasive non-native
Annual, Perennial grass 
© 2019 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Fritillaria agrestis Stinkbells
• rare native
Perennial herb (bulb) 
© 2023 Morgan Stickrod 
© 2015 George Butterworth 
© 2021 Damon Tighe |
|
Galium aparine Cleavers, Common bedstraw, Goose grass
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2023 Julia Markey 
© 2020 Ron Vanderhoff |
|
Gilia brecciarum Nevada gilia, Small gilia
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Bob Sweatt |
|
Gilia malior Scrub gilia
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2023 Ryan O'Dell |
|
Gilia tenuiflora ssp. amplifaucalis Greater yellowthroat gilia, Spreading slender flowered gilia
• rare native
Annual herb |
|
Gilia tricolor ssp. diffusa Bird's eye gilia, Bird's eyes
native
Annual herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Gilia tricolor ssp. tricolor Bird's eye gilia, Bird's eyes
native
Annual herb 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2021 Steve Matson |
|
Grindelia hirsutula Gumweed, Hairy gumweed
native
Perennial herb 
© 2021 R.A. Chasey 
© 2020 R.A. Chasey 
© 2015 Ken Lunders |
|
Gutierrezia californica California matchweed, Matchweed, snakeweed, San joaquin snakeweed
native
Perennial herb, Shrub 
© 2021 Helen Hancock 
© 2018 Ron Vanderhoff 
© 2021 Mike Russler |
|
Hazardia stenolepis Narrow scaled goldenbush, Serpentine bristleweed
native
Shrub (stem succulent) 
© 2012 George Butterworth 
© 2012 George Butterworth 
© 2011 George Butterworth |
|
Helianthus annuus Common sunflower, Hairy leaved sunflower, Sunflower
native
Annual herb 
© 2021 Mike Russler 
© 2019 Bob Case 
© 2024 Mel Letterman |
|
Hirschfeldia incana Mediterranean hoary mustard, Short podded mustard, Summer mustard
• invasive non-native
Perennial herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2022 Ron Vanderhoff |
|
Hollisteria lanata False spikeflower, False spineflower
native
Annual herb 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2016 Steve Matson |
|
Holocarpha heermannii Heermann's tarweed
native
Annual herb 
© 2018 Richard Spjut 
© 2022 Cynthia Powell 
© 2022 Cynthia Powell |
|
Hordeum murinum ssp. leporinum Farmer's foxtail, Foxtail barley, Hare barley
non-native
Annual grass 
© 2022 Ron Vanderhoff 
© 2021 Al Keuter 
© 2021 Ron Vanderhoff |
|
Hordeum vulgare Common barley
non-native
Annual grass 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Isocoma acradenia var. bracteosa Bracted alkali goldenbush
native
Shrub 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2021 Mike Russler |
|
Juniperus californica California juniper
native
Shrub 
© 2019 Patrick Furtado 
© 2017 Gary McDonald 
© 2014 Ron Vanderhoff |
|
Lactuca serriola Prickly lettuce, Prickly wild lettuce
• invasive non-native
Annual herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2017 Gary McDonald |
|
Lagophylla ramosissima Branched lagophylla, Common hareleaf
native
Annual herb 
© 2024 Mike Russler 
© 2021 Dee Shea Himes 
© 2022 Mike Russler |
|
Lamarckia aurea Goldentop grass
non-native
Annual grass 
© 2017 B.J. Dion 
© 2019 Ron Vanderhoff 
© 2015 James Gonsman |
|
Lasthenia gracilis Needle goldfields
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Lasthenia minor Coastal goldfields, Smooth lasthenia, Woolly goldfields
native
Annual herb 
© 2007 Toni Corelli 
© 2019 James Gonsman 
© 2015 Toni Corelli |
|
Layia glandulosa White layia, White tidy tips, Whitedaisy tidytips
native
Annual herb 
© 2016 James Gonsman 
© 2021 Mike Russler 
© 2021 Mike Russler |
|
Layia heterotricha Pale yellow layia, Paleyellow tidytips
• rare native
Annual herb 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2018 Sarah Termondt |
|
Layia munzii Munz's tidy tips, Munz's tidytips
• rare native
Annual herb 
© 2006 Steve Matson 
© 2006 Steve Matson 
© 2006 Steve Matson |
|
Layia pentachaeta ssp. albida Sierra tidytips, White sierra tidy tips
native
Annual herb 
© 2024 Mike Russler 
© 2023 Ryan O'Dell 
© 2020 David Greenberger |
|
Lemna sp. Small Tree-Mallow
|
|
Lepidium nitidum Peppergrass, Shining pepper grass, Shining pepperweed
native
Annual herb 
© 2021 Steve Matson 
© 2016 Steve Matson 
© 2021 Steve Matson |
|
Leptosiphon parviflorus Variable linanthus
native
Annual herb 
© 2008 Keir Morse 
© 2008 Keir Morse 
© 2008 Keir Morse |
|
Leptosyne bigelovii Bigelow coreopsis
native
Annual herb 
© 2022 Mike Russler 
© 2020 John L. Thompson 
© 2020 Matt Berger |
|
Leptosyne calliopsidea Leafy stemmed coreopsis
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Linanthus dichotomus ssp. dichotomus Evening snow
native
Annual herb 
© 2019 Jacob Smith 
© 2008 Steve Matson 
© 2021 Mike Russler |
|
Lithophragma parviflorum var. parviflorum Pink woodland star, Smallflower woodland star
native
Perennial herb 
© 2013 Jean Pawek 
© 2019 Gary McDonald 
© 2013 Jean Pawek |
|
Logfia filaginoides California cottonrose
native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Lomatium utriculatum Bladder parsnip, Common lomatium, Hog fennel
native
Perennial herb 
© 2006 Steve Matson 
© 2006 Steve Matson 
© 2015 James Gonsman |
|
Lupinus albifrons var. albifrons Silver bush lupine, Silver lupine
native
Shrub 
© 2020 Susan McDougall 
© 2020 Richard Spjut 
© 2022 Mike Russler |
|
Lupinus bicolor Annual lupine, Bicolored lupine, Miniature lupine
native
Annual, Perennial herb 
© 2024 Mary Ann Machi 
© 2022 Mike Russler 
© 2024 Mary Ann Machi |
|
Lupinus microcarpus var. microcarpus Chick lupine, Valley lupine
native
Annual herb 
© 2019 Mary Conway 
© 2024 Jacob A 
© 2022 Mike Russler |
|
Lupinus succulentus Arroyo lupine, Hollowleaf annual lupine, Succulent lupine
native
Annual herb 
© 2023 Andy Ford 
© 2018 Stacie Wolny 
© 2018 Stacie Wolny |
|
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 
© 2020 Stacie Wolny 
© 2020 David Greenberger 
© 2018 Stacie Wolny |
|
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 Gary McDonald 
© 2018 MCOSD EDRR 
© 2021 Cyril Guyot |
|
Matricaria discoidea Pineapple weed
native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 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 |
|
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 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Micropus californicus var. californicus Q tips, Slender cottonweed
native
Annual herb 
© 2006 Steve Matson 
© 2021 Ron Vanderhoff 
© 2016 Steve Matson |
|
Microseris campestris San joaquin microseris, San joaquin silverpuffs
native
Annual herb 
© 2023 Ryan O'Dell 
© 2023 Ryan O'Dell 
© 2022 Dianne Lake |
|
Microseris douglasii ssp. douglasii Douglas' microseris, Douglas' silverpuffs
native
Annual herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Microsteris gracilis Slender phlox
native
Annual herb 
© 2003 Steve Matson 
© 2016 Steve Matson 
© 2003 Steve Matson |
|
Mirabilis laevis var. crassifolia California four o'clock
native
Perennial herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
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 
© 2019 David Greenberger 
© 2022 Mike Russler |
|
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 
© 2003 Steve Matson 
© 2020 Bob Sweatt 
© 2024 Alaine Arslan |
|
Pectocarya anisocarpa Small Tree-Mallow
|
|
Pectocarya linearis ssp. ferocula Sagebrush combseed, Slender comb seed, Slender pectocarya
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Pectocarya setosa Moth combseed, Stiff stemmed comb bur
native
Annual herb 
© 2014 Steve Matson 
© 2009 Steve Matson 
© 2014 Steve Matson |
|
Phacelia distans Common phacelia, Distant phacelia, Wild heliotrope
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2022 Ron Vanderhoff |
|
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 
© 2024 Bob Steele 
© 2022 Charles Russell |
|
Pholistoma membranaceum White fiesta flower, White fiestaflower
native
Annual herb 
© 2005 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Plagiobothrys arizonicus Arizona popcorn flower, Arizona popcornflower
native
Annual herb 
© 2020 Steve Matson 
© 2020 Steve Matson 
© 2020 Steve Matson |
|
Plagiobothrys canescens Grey popcorn flower, Valley popcorn flower, Valley popcornflower
native
Annual herb 
© 2022 Catherine Chang 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Plantago erecta California plantain, Dotseed plantain, Foothill plantain
native
Annual herb 
© 2008 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Platystemon californicus Cream cups, Creamcups
native
Annual herb 
© 2017 Nathanial Wigington 
© 2022 John L. Thompson 
© 2022 John L. Thompson |
|
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 Ron Vanderhoff |
|
Quercus douglasii Blue oak
native
Tree 
© 2018 Gary McDonald 
© 2020 Charles Russell 
© 2019 Susan McDougall |
|
Quercus john-tuckeri Tucker oak, Tucker's oak
native
Tree 
© 2024 Kyle Suchy  © jonaskat 
© 2019 Richard Spjut |
|
Quercus lobata California white oak, Valley oak
native
Tree 
© 2023 Helen Hancock 
© 2021 Cynthia Powell 
© 2023 Suzanne L. Weakley |
|
Salix laevigata Polished willow, Red willow
native
Tree 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
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 
© 2008 Steve Matson 
© 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 
© 2023 Ron Vanderhoff 
© 2021 Toni Corelli |
|
Sinapis arvensis Charlock mustard
• invasive non-native
Annual herb 
© 2020 Randy Huey 
© 2022 Mike Russler 
© 2023 Andy Ford |
|
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 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Stachys pycnantha Short spike hedge nettle, Shortspike hedgenettle
native
Perennial herb 
© 2023 David Wolfson 
© 2019 David Wolfson 
© 2021 Dan Quinn |
|
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 
© 2024 Dana York 
© 2022 Catherine Chang 
© 2020 Ken Hickman |
|
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 Steve Matson 
© 2022 Steve Matson |
|
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 
© 2016 Nathan Wickstrum 
© 2016 Nathan Wickstrum 
© 2016 Nathan Wickstrum |
|
Tetrapteron graciliflorum Hill sun cup
native
Annual herb 
© 2021 Charles Russell 
© 2010 Richard Spjut 
© 2016 Richard Spjut |
|
Thysanocarpus curvipes ssp. curvipes Fringe Pod
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Thysanocarpus laciniatus Common lace pod, Mountain fringepod, Narrow leaved fringe pod
native
Annual herb 
© 2021 Helen Hancock 
© 2023 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Trifolium albopurpureum Indian clover, Rancheria clover
native
Annual herb 
© 2024 Steve Matson 
© 2024 Steve Matson 
© 2024 Steve Matson |
|
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 
© 2024 Steve Conger 
© 2024 Steve Conger 
© 2018 Stacie Wolny |
|
Uropappus lindleyi Silver puffs, Uropappus
native
Annual herb 
© 2019 Zack Abbey 
© 2019 Ron Vanderhoff 
© 2016 Ron Vanderhoff |
|
Verbascum virgatum Wand mullein
non-native
Perennial herb 
© 2019 Jerry Thornton 
© 2022 Amber Bedgood 
© 2021 Mike Russler |
|
Zannichellia palustris Horned pondweed
native
Perennial herb 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff |