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| Plants with a serpentine affinity greater than 3.5 | ||||||
| 335 PLANTS |
|
Acanthomintha duttonii San mateo thorn mint
• rare native
Annual herb 
© 2011 Aaron Schusteff 
© 2023 Morgan Stickrod  © 2009 Neal Kramer |
|
Allium diabolense Diablo onion, Serpentine onion
native
Perennial herb (bulb) 
© 2020 David Greenberger 
© 2021 Mike Russler 
© 2021 Mike Russler |
|
Allium falcifolium Scytheleaf onion, Sickle leaf onion
native
Perennial herb (bulb) 
© 2011 Steve Matson 
© 2022 Steve Matson 
© 2011 Steve Matson |
|
Allium fimbriatum var. purdyi Purdy's onion
• rare native
Perennial herb (bulb) 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Allium hoffmanii Beegum onion
• rare native
Perennial herb (bulb) 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Allium howellii var. sanbenitense San benito onion
• rare native
Perennial herb (bulb) 
© 2023 Ryan O'Dell 
© 2024 Ryan O'Dell 
© 2024 Ryan O'Dell |
|
Allium jepsonii Jepson's onion
• rare native
Perennial herb (bulb) 
© 2019 David Greenberger 
© 2021 David popp  © 2020 Belinda Lo |
|
Allium lacunosum var. lacunosum Pitted onion
native
Perennial herb (bulb) 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Allium lacunosum var. micranthum Small flowered pitted onion, White fringed onion
native
Perennial herb (bulb) 
© 2008 Keir Morse 
© 2008 Keir Morse 
© 2018 Aaron Schusteff |
|
Allium sanbornii var. congdonii Congdon's onion
• rare native
Perennial herb (bulb) 
© 2023 Mike Russler 
© 2023 Mike Russler 
© 2023 Mike Russler |
|
Allium sharsmithiae Sharsmith's onion
• rare native
Perennial herb (bulb) 
© 2020 David Greenberger 
© 2019 Matt Berger 
© 2020 David Greenberger |
|
Allium tuolumnense Rawhide hill onion
• rare native
Perennial herb (bulb) 
© 2016 Patrick Congdon 
© 2024 Mike Russler 
© 2024 Mike Russler |
|
Antennaria sawyeri Sawyer's pussy-toes
• rare native
Perennial herb 
© 2014 Julie Kierstead Nelson 
© 2019 Julie Kierstead Nelson 
© 2019 Julie Kierstead Nelson |
|
Antennaria suffrutescens Evergreen everlasting, Evergreen pussytoes
• rare native
Perennial herb 
© 2024 Mary Ann Machi 
© 2024 Mary Ann Machi 
© 2013 Dana York |
|
Antirrhinum subcordatum Dimorphic snapdragon
• rare native
Annual herb 
© 2019 Christian Schwarz  © © 2015 Dean Wm. Taylor  © 2015 Dean Wm. Taylor |
|
Aquilegia eximia Serpentine columbine, Sticky columbine, Van Houtte's columbine
native
Perennial herb 
© 2024 Charles Russell 
© 2019 Ken Hickman 
© 2021 Mike Russler |
|
Arabis mcdonaldiana Mcdonald's rock cress
• rare native
Perennial herb 
© 2012 Gerald Carr 
© 2012 Gerald Carr 
© 2012 Gerald Carr |
|
Arabis oregana Oregon rock cress, Oregon rockcress
• rare native
Perennial herb 
© 2012 Gerald Carr 
© 2012 Gerald Carr 
© 2012 Gerald Carr |
|
Arctostaphylos bakeri ssp. bakeri Baker's manzanita
• rare native
Shrub 
© 2019 Susan McDougall 
© 2019 Susan McDougall 
© 2019 Susan McDougall |
|
Arctostaphylos bakeri ssp. sublaevis The cedars manzanita
• rare native
Shrub 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey |
|
Arctostaphylos franciscana Franciscan manzanita
• rare native
Shrub 
© 2016 Adam Chasey 
© 2022 Cynthia Powell 
© 2022 Cynthia Powell |
|
Arctostaphylos hispidula Howell's manzanita
• rare native
Shrub 
© 2023 Dana York 
© 2019 Adam Chasey 
© 2023 Dana York |
|
Arctostaphylos klamathensis Klamath manzanita
• rare native
Shrub 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Arctostaphylos montana ssp. montana Mt. Tamalpais manzanita
• rare native
Shrub 
© 2018 David Greenberger 
© 2019 Adam Chasey 
© 2019 Adam Chasey |
|
Arctostaphylos montana ssp. ravenii Presidio manzanita
• rare native
Shrub 
© 2019 Susan McDougall  © 2006 Heath McAllister 
© 2019 Susan McDougall |
|
Arctostaphylos obispoensis Bishop manzanita, Serpentine manzanita
• rare native
Shrub 
© 2019 Susan McDougall 
© 2021 Mike Russler 
© 2021 Mike Russler |
|
Arctostaphylos viscida ssp. pulchella Sticky whiteleaf manzanita, White leaf manzanita
native
Tree, Shrub 
© 2024 Emily R. Allen 
© 2022 R.A. Chasey 
© 2021 R.A. Chasey |
|
Arnica cernua Serpentine arnica
• rare native
Perennial herb (rhizomatous) 
© 2023 Dana York 
© 2019 Joey Santore 
© 2019 Joey Santore |
|
Arnica spathulata Klamath arnica
• rare native
Perennial herb (rhizomatous) 
© 2007 Gerald Carr 
© 2023 Dana York 
© 2023 Dana York |
|
Asclepias solanoana Serpentine milkweed, Solanoa
• rare native
Perennial herb 
© 2019 Spencer Riffle 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Aspidotis carlotta-halliae Carlotta hall's lace fern
• rare native
Fern (rhizomatous)  © 2010 Neal Kramer 
© 2020 R.A. Chasey 
© 2020 R.A. Chasey |
|
Astragalus clevelandii Cleveland's milk vetch, Cleveland's milkvetch
• rare native
Perennial herb  © 2012 Steve Matson 
© 2019 Paul Aigner 
© 2018 Paul Aigner |
|
Astragalus rattanii var. jepsonianus Jepson's milk vetch, Jepson's milkvetch
• rare native
Annual herb 
© 2017 Steve Matson 
© 2022 Charles Russell 
© 2017 Steve Matson |
|
Astragalus whitneyi var. siskiyouensis Siskiyou milk vetch, Siskiyou milkvetch
native
Perennial herb 
© 2019 Charles Russell 
© 2011 Steve Matson 
© 2019 Julie Kierstead Nelson |
|
Balsamorhiza sericea Silky balsamroot
• rare native
Perennial herb 
© 2019 Matt Berger 
© 2019 Glenn Fine 
© 2007 Keir Morse |
|
Benitoa occidentalis Benitoa
• rare native
Annual herb 
© 2021 Mike Russler 
© 2020 Mike Russler 
© 2019 John Game |
|
Boechera constancei Constance's rock cress
• rare native
Perennial herb  © 2017 John Doyen  © 2008 Sierra Pacific Industries  © 2012 Lynn Robertson |
|
Boechera koehleri Koehler's rockcress
• rare native
Perennial herb 
© 2023 Dee Shea Himes 
© 2023 Dee Shea Himes 
© 2023 Dana York |
|
Boechera rollei Rolle's rockcress
• rare native
Perennial herb 
© 2012 Dana York 
© 2012 Dana York 
© 2012 Dana York |
|
Boechera serpenticola Serpentine rockcress
• rare native
Perennial herb  © 2019 Steve Matson  © 2019 Steve Matson  © 2019 Steve Matson |
|
Brickellia greenei Greene brickellbush, Greene's brickelbush, Greene's brickellia
native
Perennial herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2020 R.A. Chasey |
|
Brodiaea rosea ssp. rosea Indian Valley brodiaea
• rare native
Perennial herb (bulb 
© 2019 Julie Kierstead Nelson 
© 2015 Julie A. Kierstead 
© 2021 Steve Laymon |
|
Brodiaea stellaris Star flowered brodiaea, Starflower brodiaea
native
Perennial herb 
© 2015 James Gonsman 
© 2018 Hayley Ross 
© 2015 James Gonsman |
|
Calamagrostis ophitidis Serpentine reed grass, Serpentine reedgrass
• rare native
Perennial grass 
© 2021 R.A. Chasey 
© 2018 Hunter Breck 
© 2022 R.A. Chasey |
|
Calochortus clavatus var. clavatus Club haired mariposa lily, Clubhair mariposa lily
• rare native
Perennial herb (bulb) 
© 2020 David Wolfson 
© 2020 David Krause 
© 2023 Mike Russler |
|
Calochortus obispoensis San luis mariposa lily
• rare native
Perennial herb (bulb) 
© 2023 Morgan Stickrod 
© 2020 Meghan Lindt 
© 2018 Margarita Orlova |
|
Calochortus raichei The cedars fairy lantern
• rare native
Perennial herb (bulb) 
© 2010 Tony Morosco  © 2005 Steve Lowens 
© 2023 John L. Thompson |
|
Calochortus tiburonensis Tiburon mariposa lily
• rare native
Perennial herb (bulb) 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Calycadenia pauciflora Small flowered calycadenia, Smallflower western rosinweed
native
Annual herb 
© 2021 Steve Laymon 
© 2021 Steve Laymon 
© 2021 R.A. Chasey |
|
Calyptridium quadripetalum Four petaled pussypaws
• rare native
Annual herb 
© 2019 Paul Aigner  © 2012 Jake Ruygt  © 2012 Jake Ruygt |
|
Calystegia collina ssp. collina Coast range false bindweed, Hillside morning glory
native
Perennial herb 
© 2018 Eliezer Margolis 
© 2019 Julian Geoghegan 
© 2023 Leah Lord |
|
Calystegia collina ssp. oxyphylla Mount saint helena morning glory, Mt. saint helena morning glory
• rare native
Perennial herb (rhizomatous) 
© 2020 Hunter Breck 
© 2019 R.A. Chasey 
© 2022 David Strauch |
|
Calystegia collina ssp. tridactylosa Coast range false bindweed, Three fingered morning glory
• rare native
Perennial herb  © 2011 Vernon Smith  © BLM,Arcata Field Office |
|
Calystegia collina ssp. venusta South coast range morning glory
• rare native
Perennial herb (rhizomatous) 
© 2022 Mike Russler 
© 2019 Jennifer Wheeler 
© 2022 Mike Russler |
|
Calystegia vanzuukiae Van zuuk's morning-glory
• rare native
Perennial herb 
© 2022 Camille Nowell 
© 2022 Camille Nowell  © 2014 Steven Perry |
|
Camissonia benitensis San benito evening primrose
• rare native
Annual herb 
© 2022 Ryan O'Dell 
© 2022 Ryan O'Dell 
© 2019 David Greenberger |
|
Campanula angustiflora Eastwood's bellflower, Eastwood's harebell
native
Annual herb 
© 2018 Hunter Breck 
© 2017 Hunter Breck 
© 2017 Hunter Breck |
|
Campanula exigua Chaparral harebell
• rare native
Annual herb 
© 2019 David Greenberger 
© 2022 R.A. Chasey 
© 2019 David Greenberger |
|
Campanula griffinii Griffin's bellflower, Griffin's harebell
native
Annual herb 
© 2022 Robert Steers 
© 2022 Robert Steers 
© 2022 Robert Steers |
|
Campanula rotundifolia Alpine harebell, Bluebell, Round leaf harebell
native
Perennial herb 
© 2022 Dana York 
© 2022 Dana York 
© 2021 R.A. Chasey |
|
Campanula sharsmithiae Sharsmith's harebell
• rare native
Annual herb  © 2014 Chris Winchell  © 2011 Aaron Schusteff  © 2011 Aaron Schusteff |
|
Cardamine pachystigma var. dissectifolia Dissected leaf toothwort
• rare native
Perennial herb (rhizomatous) 
© 2017 Cheryl Ballantyne 
© 2017 Cheryl Ballantyne 
© 2019 David popp |
|
Carex concinnoides Northwestern sedge
native
Perennial grasslike herb 
© 2023 Dana York 
© 2015 Hayley Ross 
© 2015 Hayley Ross |
|
• rare native
Perennial grasslike herb |
|
Carex mendocinensis Mendocino sedge
native
Perennial grasslike herb 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey |
|
Carex obispoensis San Luis Obispo sedge, San Luis sedge
• rare native
Perennial grasslike herb (rhizomatous) 
© 2006 Steve Matson  © 2010 Chris Winchell 
© 2006 Steve Matson |
|
Carex scabriuscula Siskiyou sedge
• rare native
Perennial grasslike herb (rhizomatous) 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Carex serpenticola Serpentine sedge
• rare native
Perennial grasslike herb 
© 2016 Dana York 
© 2016 Dana York 
© 2016 Dana York |
|
Carex serratodens Bifid sedge, Two tooth sedge
native
Perennial grasslike herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2021 Cynthia Powell |
|
Castilleja affinis ssp. neglecta Tiburon indian paintbrush
native
Perennial herb (hemiparasitic)  © Dr. Robert Thomas and Margaret Orr1999 California Academy of Sciences  © 2014 Christopher Gurney  © 2008 Lech Naumovich |
|
Castilleja brevilobata Short-lobed paintbrush
• rare native
Perennial herb 
© 2023 Dana York 
© 2023 Dana York 
© 2023 Dana York |
|
Castilleja miniata ssp. elata Siskiyou indian paintbrush
native
Perennial herb (hemiparasitic) 
© 2018 Anna Sereno 
© 2018 Anna Sereno 
© 2018 Anna Sereno |
|
Castilleja rubicundula ssp. rubicundula Cream sacs
native
Annual herb 
© 2019 Elizabeth Fedewa 
© 2019 Elizabeth Fedewa 
© 2019 Paul Aigner |
|
Ceanothus ferrisiae Coyote ceanothus
• rare native
Shrub 
© 2020 R.A. Chasey 
© 2020 R.A. Chasey 
© 2019 Ken Hickman |
|
Ceanothus foliosus var. medius La cuesta ceanothus, Wavyleaf buckbrush
native
Shrub 
© 2018 Michael Mitchell  © 2005 Dieter Wilken |
|
Ceanothus jepsonii var. albiflorus Jepson ceanothus, Musk brush
native
Shrub 
© 2015 James Gonsman 
© 2018 Tina Curiel 
© 2021 Julian Geoghegan |
|
Ceanothus jepsonii var. jepsonii Jepson ceanothus, Musk brush
native
Shrub
© 2015 James Gonsman
© 2018 Tina Curiel
© 2021 Julian Geoghegan |
|
Ceanothus jepsonii Jepson ceanothus, Musk brush
native
Shrub
© 2015 James Gonsman
© 2018 Tina Curiel
© 2021 Julian Geoghegan |
|
Ceanothus pumilus Dwarf ceanothus, Siskiyou mat
native
Shrub 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Chaenactis suffrutescens Shasta chaenactis
• rare native
Perennial herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Chlorogalum pomeridianum var. minus Dwarf soaproot, Wavyleaf soap plant
• rare native
Perennial herb (bulb)  © 1997 Dean Wm. Taylor  © 2011 Dean Wm. Taylor, Ph.D.  © 2011 Dean Wm. Taylor, Ph.D. |
|
Chorizanthe breweri Brewer's spineflower, San luis obispo spineflower
• rare native
Annual herb 
© 2020 David Greenberger 
© 2020 David Greenberger 
© 2023 Mike Russler |
|
Chorizanthe palmeri Palmer's spineflower
• rare native
Annual herb 
© 2019 David Greenberger 
© 2012 Terrence Gosliner 
© 2023 Mike Russler |
|
Chorizanthe ventricosa Priest valley spineflower
• rare native
Annual herb 
© 2014 Neal Kramer 
© 2023 Ryan O'Dell 
© 2014 Neal Kramer |
|
Cirsium fontinale var. campylon Mt hamilton thistle, Mt. hamilton thistle
• rare native
Perennial herb 
© 2019 David Greenberger 
© 2020 David Greenberger 
© 2020 R.A. Chasey |
|
Cirsium fontinale var. fontinale Fountain thistle
• rare native
Perennial herb 
© 2004 Toni Corelli 
© 2021 Ambrose Cruz 
© 2021 Ambrose Cruz |
|
Cirsium fontinale var. obispoense Chorro creek bog thistle
• rare native
Perennial herb 
© 2017 Cindy Roessler 
© 2015 David Wolfson 
© 2020 David Greenberger |
|
Cirsium hydrophilum var. vaseyi Mt. Tamalpais thistle, Vasey's thistle
• rare native
Perennial herb 
© 2018 Eliezer Margolis 
© 2021 Rowena Forest 
© 2019 Chasey |
|
Clarkia breweri Brewer's clarkia, Fairy fans
• rare native
Annual herb 
© 2019 David Greenberger 
© 2018 Elinor Gates 
© 2019 Joey Santore |
|
Clarkia franciscana Presidio clarkia
• rare native
Annual herb 
© 2020 Steve Laymon 
© 2017 Lech N 
© 2020 Mike Russler |
|
Clarkia gracilis ssp. tracyi Tracy's clarkia
• rare native
Annual herb 
© 2019 Steve Laymon 
© 2018 Steve Laymon 
© 2019 Steve Laymon |
|
Claytonia exigua ssp. glauca Blue leaved spring beauty, Serpentine springbeauty
native
Annual herb 
© 2022 Diana Wahl 
© 2022 Diane Renshaw  © 2008 Keir Morse |
|
Claytonia saxosa Brandegee's spring beauty, Brandegee's springbeauty
native
Annual herb 
© 2023 Steve Conger 
© 2020 R.A. Chasey  © 2015 John Doyen |
|
Collinsia greenei Greene's blue eyed mary, Greene's collinsia
native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Collomia diversifolia Serpentine collomia
• rare native
Annual herb 
© 2020 Matt Berger 
© 2020 Matt Berger 
© 2020 John Game |
|
Convolvulus simulans Small flowered morning glory
• rare native
Annual herb 
© 2016 Ron Vanderhoff 
© 2017 James Bailey 
© 2023 David Gowen |
|
Cordylanthus nidularius Mt. Diablo bird's beak
• rare native
Annual herb (hemiparasitic) 
© 2014 John Game 
© 2023 Ryan O'Dell 
© 2012 Terrence Gosliner |
|
Cordylanthus pringlei Pringle's bird's beak
native
Annual herb 
© 2024 Ryan O'Dell 
© 2023 Ryan O'Dell 
© 2023 Ryan O'Dell |
|
Cordylanthus tenuis ssp. brunneus Serpentine bird's beak
• rare native
Annual herb (hemiparasitic) 
© 2003 William Maslach 
© 2023 R.A. Chasey 
© 2023 R.A. Chasey |
|
Cordylanthus tenuis ssp. capillaris Pennell's bird's beak
• rare native
Annual herb (hemiparasitic)  © 2015 John Doyen  © 2009 Aaron Arthur  © 2009 Aaron Arthur |
|
Cordylanthus tenuis ssp. viscidus Slender bird's beak, Sticky bird's beak, Viscid bird's beak
native
Annual herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Cryptantha dissita Serpentine cryptantha
• rare native
Annual herb 
© 2020 Terrence Gosliner  © 2019 Terry Gosliner  © 2019 Terry Gosliner |
|
Cryptantha hispidula Napa cryptantha
native
Annual herb 
© 2022 R.A. Chasey 
© 2022 R.A. Chasey 
© 2021 R.A. Chasey |
|
Cryptantha mariposae Mariposa cryptantha
• rare native
Annual herb  © 2010 Robin Kent  © 2011 Steve Matson  © 2013 Jean Pawek |
|
Cypripedium californicum California lady's slipper
• rare native
Perennial herb (rhizomatous) 
© 2023 Mary Ann Machi 
© 2017 Steve Matson 
© 2018 Margarita Orlova |
|
Darlingtonia californica California pitcherplant
• rare native
Perennial herb (carnivorous) 
© 2023 Mary Ann Machi 
© 2023 Mary Ann Machi 
© 2005 Steve Matson |
|
Delphinium parryi ssp. eastwoodiae Eastwood's larkspur
• rare native
Perennial herb 
© 2023 Mike Russler 
© 2023 Mike Russler 
© 2023 Mike Russler |
|
Delphinium uliginosum Swamp larkspur
• rare native
Perennial herb 
© 2021 Charles Russell 
© 2021 Charles Russell 
© 2021 Charles Russell |
|
Dicentra formosa ssp. oregana Oregon bleeding heart
• rare native
Perennial herb 
© 2020 Susan McDougall 
© 2022 Ryan O'Dell 
© 2022 Ryan O'Dell |
|
Draba carnosula Mt. Eddy draba
• rare native
Perennial herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2019 John Game |
|
Dudleya abramsii ssp. bettinae San Luis Obispo serpentine dudleya
• rare native
Perennial herb 
© 2012 Terrence Gosliner 
© 2023 Kyle Suchy  © 2011 Chris Winchell |
|
Dudleya abramsii ssp. murina San Luis Obispo dudleya
• rare native
Perennial herb 
© 2023 Mike Russler 
© 2023 Mike Russler 
© 2023 Mike Russler |
|
Dudleya abramsii ssp. setchellii Santa clara valley dudleya
• rare native
Perennial herb 
© 2019 Paul Hankamp 
© 2008 Verna Jigour 
© 2008 Verna Jigour |
|
Emmenanthe penduliflora var. rosea Pink whispering bells
native
Annual herb 
© 2022 Mike Russler 
© 2021 Dee Shea Himes 
© 2022 Mike Russler |
|
Epilobium oreganum Grants pass willowherb, Oregon fireweed
• rare native
Perennial herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Epilobium rigidum Siskiyou mtns. willowherb, Stiff willowherb
• rare native
Perennial herb 
© 2022 Dee Shea Himes 
© 2022 Dee Shea Himes  © 2005 Jennifer L. Kalt |
|
Epilobium siskiyouense Siskiyou fireweed, Siskiyou willowherb
• rare native
Perennial herb 
© 2019 Matt Berger 
© 2023 Joaquin Hale 
© 2021 Donald Burk |
|
Ericameria ophitidis Serpentine goldenbush, Serpentine macronema
• rare native
Shrub  © 2005 Dean Wm. Taylor  © Shasta-Trinity National Forest  © 2017 Belinda Lo |
|
Erigeron bloomeri var. nudatus Scabland fleabane, Waldo daisy
• rare native
Perennial herb  © 2008 Norman Jensen |
|
Erigeron foliosus var. confinis Leafy fleabane
native
Perennial herb 
© 2023 Dana York 
© 2023 Dana York 
© 2007 Keir Morse |
|
Erigeron greenei Greene's narrow-leaved daisy
• rare native
Perennial herb 
© 2018 John Game 
© 2023 R.A. Chasey 
© 2023 R.A. Chasey |
|
Erigeron petrophilus var. sierrensis Northern sierra daisy, Sierra erigeron
• rare native
Perennial herb (rhizomatous) 
© 2019 David popp 
© 2017 David popp 
© 2018 David popp |
|
Erigeron serpentinus Serpentine daisy, Serpentine erigeron
• rare native
Perennial herb 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey 
© 2010 Tony Morosco |
|
Eriogonum alpinum Trinity buckwheat
• rare native
Perennial herb (rhizomatous) 
© 2022 Glenn Fine 
© 2014 Steve Matson 
© 2019 Matt Berger |
|
Eriogonum cedrorum The cedars buckwheat
• rare native
Perennial herb 
© 2021 R.A. Chasey 
© 2010 Tony Morosco 
© 2021 R.A. Chasey |
|
Eriogonum congdonii Congdon's buckwheat
• rare native
Shrub 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2019 Matt Berger |
|
Eriogonum hirtellum Klamath mountain buckwheat, Klamath mtn. buckwheat
• rare native
Perennial herb (rhizomatous)  © 2009 Zoya Akulova  © 2010 Steve Matson  © 2010 Steve Matson |
|
Eriogonum kelloggii Kellogg's buckwheat, Red mountain buckwheat
• rare native
Perennial herb  © 2008 Kaylea Eickhoff  © 2003 BLM,Arcata Field Office 
© 2024 Ryan O'Dell |
|
Eriogonum libertini Dubakella mountain buckwheat, Dubakella mtn. buckwheat, Hoffman buckwheat
• rare native
Perennial herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2011 Julie A. Kierstead |
|
Eriogonum luteolum var. caninum Tiburon buckwheat
• rare native
Annual herb 
© 2020 R.A. Chasey 
© 2020 R.A. Chasey 
© 2021 R.A. Chasey |
|
Eriogonum luteolum var. luteolum Golden buckwheat, Goldencarpet buckwheat
native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Eriogonum luteolum var. pedunculatum Goldencarpet buckwheat
native
Annual herb  © 2010 Steve Matson 
© 2022 Mike Russler 
© 2022 Mike Russler |
|
Eriogonum nervulosum Snow Mountain buckwheat
• rare native
Perennial herb (rhizomatous) 
© 2022 Ryan O'Dell  © 2009 Zoya Akulova  © 2010 Charles Patterson |
|
Eriogonum pendulum Waldo buckwheat
• rare native
Perennial herb  © 2009 Norman Jensen  © 2008 Keir Morse  © 2008 Keir Morse |
|
Eriogonum siskiyouense Siskiyou buckwheat
• rare native
Perennial herb 
© 2017 John Rawlings 
© 2019 Matt Berger 
© 2014 Steve Matson |
|
Eriogonum strictum var. greenei Greene's buckwheat
• rare native
Perennial herb 
© 2017 Steve Matson 
© 2010 Julie A. Kierstead 
© 2020 R.A. Chasey |
|
Eriogonum ternatum Ternate buckwheat
• rare native
Perennial herb 
© 2021 Don Hollander 
© 2021 Don Hollander 
© 2021 Don Hollander |
|
Eriogonum tripodum Tripod buckwheat
• rare native
Shrub 
© 2023 Mike Russler 
© 2023 Mike Russler 
© 2021 Scott Yarger |
|
Eriogonum umbellatum var. humistratum Mt. Eddy buckwheat
• rare native
Perennial herb 
© 2022 Dana York 
© 2019 Julie Kierstead Nelson 
© 2017 Julie Kierstead Nelson |
|
Eriogonum umbellatum var. nelsoniorum Sulphur buckwheat
native
Perennial herb 
© 2010 Julie A. Kierstead 
© 2023 Dana York 
© 2010 Julie A. Kierstead |
|
Eriogonum umbellatum var. speciosum Showy sulfur buckwheat, Sulphur flower buckwheat
native
Perennial herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Eriophyllum latilobum San mateo woolly sunflower
• rare native
Perennial herb 
© 2020 Diana Wahl  © 2015 Neal Kramer  © 2015 Neal Kramer |
|
Erythranthe glaucescens shield-bracted monkeyflower
• rare native
Annual herb 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2023 Cheryl Ballantyne |
|
Erythranthe linearifolia Primrose monkeyflower
native
Perennial herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Erythranthe nudata bare monkeyflower
• rare native
Annual herb 
© 2019 Paul Aigner  © 2015 John Doyen 
© 2019 Paul Aigner |
|
Erythranthe percaulis Serpentine Canyon monkeyflower
• rare native
Annual herb 
© 2016 David popp 
© 2019 David popp 
© 2019 David popp |
|
Erythranthe trinitiensis Pink-margined monkeyflower
• rare native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Erythranthe willisii Feather River monkeyflower
native
Perennial herb 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2021 Mike Russler |
|
Erythronium citrinum var. citrinum Cream fawnlily, Lemon colored fawn lily
• rare native
Perennial herb (bulb) 
© 2022 Dana York 
© 2024 Mary Ann Machi 
© 2021 Dana York |
|
Erythronium citrinum var. roderickii Lemon colored fawn lily, Roderick's fawnlily
• rare native
Perennial herb (bulb) 
© 2022 Christopher Collier  © 2018 Sierra Pacific Industries 
© 2022 Christopher Collier |
|
Erythronium helenae Pacific fawnlily, St. Helena fawn lily
• rare native
Perennial herb (bulb) 
© 2016 Suzanne L. Weakley 
© 2020 John Game 
© 2020 Claudia Morgan |
|
Frangula californica ssp. crassifolia Serpentine hoary coffeeberry
native
Shrub  © 2017 Pete Veilleux |
|
Frangula californica ssp. occidentalis Wetern california coffeeberry
native
Shrub 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Fritillaria biflora var. ineziana Hillsborough chocolate lily
• rare native
Perennial herb (bulb) 
© 2004 Toni Corelli 
© 2004 Toni Corelli 
© 2004 Toni Corelli |
|
Fritillaria falcata Talus fritillary
• rare native
Perennial herb (bulb) 
© 2019 joey malone 
© 2019 Matt Berger 
© 2023 Mike Russler |
|
Fritillaria glauca Siskiyou fritillary, Siskiyou missionbells
• rare native
Perennial herb 
© 2024 Damon Tighe 
© 2019 Joey Santore 
© 2020 Tim Miller |
|
Fritillaria purdyi Purdy's fritillary
• rare native
Perennial herb (bulb) 
© 2020 Steve Conger 
© 2023 Timothy Boomer 
© 2020 Kale Levin |
|
Fritillaria viridea San benito fritillary
• rare native
Perennial herb (bulb) 
© 2024 Steve Matson 
© 2024 Steve Matson 
© 2024 Steve Matson |
|
Galium ambiguum ssp. siskiyouense Siskiyou bedstraw
native
Perennial herb 
© 2017 Steve Matson 
© 2017 Steve Matson  © 2008 Keir Morse |
|
Galium andrewsii ssp. gatense Serpentine bedstraw
• rare native
Perennial herb 
© 2019 David Greenberger 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Galium hardhamiae Hardham's bedstraw
• rare native
Perennial herb  © 1984 California Native Plant Society  © 1984 California Native Plant Society |
|
Galium serpenticum ssp. scotticum Scott mountain bedstraw, Scott mtn. bedstraw
• rare native
Perennial herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Garrya buxifolia Boxleaf silk tassel, Boxleaf silktassel, Dwarf silktassel
native
Shrub 
© 2019 Susan McDougall 
© 2021 Steve Conger 
© 2021 Steve Matson |
|
Garrya congdonii Chaparral silktassel, Congdon's silk tassel, Interior silktassel
native
Shrub 
© 2023 Steve Laymon 
© 2020 Susan McDougall 
© 2020 Susan McDougall |
|
Gentiana setigera Mendocino gentian
• rare native
Perennial herb 
© 2007 Keir Morse 
© 2007 Keir Morse 
© 2007 Keir Morse |
|
Githopsis pulchella ssp. serpentinicola Serpentine bluecup, Sierra bluecup
• rare native
Annual herb 
© 2022 Mike Russler 
© 2022 Mike Russler 
© 2022 Mike Russler |
|
Harmonia doris-nilesiae Niles's harmonia
• rare native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Harmonia guggolziorum Guggolz's harmonia
• rare native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Harmonia hallii Hall's harmonia
• rare native
Annual herb 
© 2020 Matt Berger 
© 2020 Matt Berger 
© 2022 Ryan O'Dell |
|
Harmonia stebbinsii Stebbins's harmonia
• rare native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Hastingsia serpentinicola Klamath rushlily, Siskiyou hastingsia
native
Perennial herb 
© 2019 Julie Kierstead Nelson  © 2014 John Doyen 
© 2023 Morgan Stickrod |
|
Helianthus exilis Serpentine sunflower
• rare native
Annual herb 
© 2019 Amida Verhey 
© 2021 Mike Russler 
© 2020 Charles Russell |
|
Hesperocyparis macnabiana Macnab cypress
native
Tree, Shrub 
© 2021 Christopher Collier 
© 2022 R.A. Chasey 
© 2022 R.A. Chasey |
|
Hesperocyparis sargentii Sargent cypress
native
Tree, Shrub 
© 2021 Bryant Baker 
© 2021 R.A. Chasey 
© 2021 Bryant Baker |
|
Hesperolinon adenophyllum Glandular dwarf flax, Glandular western flax
• rare native
Annual herb  © 2002 John Game  © 2006 Kerry Heise  © 2006 Kerry Heise |
|
Hesperolinon bicarpellatum Two carpellate western flax, Twocarpel dwarf flax
• rare native
Annual herb 
© 2017 John Game 
© 2021 R.A. Chasey 
© 2017 Adam Chasey |
|
Hesperolinon congestum Marin dwarf flax, Marin western flax
• rare native
Annual herb 
© 2021 Charles Russell 
© 2019 David Greenberger 
© 2016 David Greenberger |
|
Hesperolinon didymocarpum Lake county dwarf flax, Lake county western flax
• rare native
Annual herb  © 2018 Aaron Arthur  © 2018 Aaron Arthur  © 2018 Aaron Arthur |
|
Hesperolinon disjunctum Coast range dwarf flax, Coast range western flax
native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Hesperolinon drymarioides Drymaria like western flax, Drymary dwarf flax
• rare native
Annual herb  © Niall McCarten and CNPS  © 2013 Jake Ruygt  © Niall McCarten and CNPS |
|
Hesperolinon sharsmithiae Sharsmith's western flax
• rare native
Annual herb 
© 2022 R.A. Chasey 
© 2022 R.A. Chasey 
© 2022 R.A. Chasey |
|
Hesperolinon spergulinum Slender dwarf flax, Slender western flax
native
Annual herb 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey |
|
Hesperolinon tehamense Paskenta grade dwarf flax, Tehama county western flax
• rare native
Annual herb  © Roxanne Bittman and CNPS  © Roxanne Bittman and CNPS  © 1997 Dean Wm. Taylor |
|
Hieracium bolanderi Bolander's hawkweed
native
Perennial herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Horkelia congesta var. nemorosa Josephine horkelia
• rare native
Perennial herb  © 2015 John Doyen  © 2011 Doreen L. Smith  © 2011 Doreen L. Smith |
|
Horkelia daucifolia Carrot leafed horkelia, Carrotleaf horkelia
native
Perennial herb 
© 2016 Julie Kierstead Nelson 
© 2019 Julie Kierstead Nelson  © 2011 Steve Matson |
|
Horkelia daucifolia var. daucifolia Carrot leafed horkelia
native
Perennial herb  © 2016 Julie Kierstead Nelson  © 2016 Julie Kierstead Nelson  © 2016 Julie Kierstead Nelson |
|
Horkelia daucifolia var. indicta Jepson's horkelia
• rare native
Perennial herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Horkelia sericata Howell's horkelia, Silky horkelia
• rare native
Perennial herb  © 2015 John Doyen  © 2014 John Doyen  © 2010 Sean B. Smith |
|
Howellanthus dalesianus Scott mountain phacelia
• rare native
Perennial herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Iris bracteata Siskiyou iris
• rare native
Perennial herb (rhizomatous) 
© 2023 Dana York 
© 2023 Dana York 
© 2023 Dana York |
|
Iris innominata Del norte county iris
• rare native
Perennial herb (rhizomatous) 
© 2010 Gerald Carr 
© 2010 Gerald Carr 
© 2010 Gerald Carr |
|
Iris thompsonii Thompson's iris
• rare native
Perennial herb 
© 2023 Dana York 
© 2023 Dana York 
© 2017 Steve Matson |
|
Ivesia pickeringii Pickering's ivesia, Silky mousetail
• rare native
Perennial herb 
© 2021 Julie A. Kierstead 
© 2021 Julie A. Kierstead 
© 2021 Julie A. Kierstead |
|
Juniperus communis var. jackii Common juniper
native
Shrub 
© 2019 Bob Sweatt 
© 2022 Dana York 
© 2019 Bob Sweatt |
|
Lagophylla minor Lesser hareleaf, Little hareleaf
native
Annual herb 
© 2020 Natasha Khanna-Dang 
© 2021 Paul Aigner 
© 2021 Paul Aigner |
|
Lathyrus biflorus Two flowered pea, Twoflower pea
• rare native
Perennial herb  © 2005 Jennifer L. Kalt  © 2009 Tony LaBanca  © 2005 Jennifer L. Kalt |
|
Lathyrus delnorticus Del norte pea
• rare native
Perennial herb 
© 2020 Kolby Lundgren 
© 2022 Tricia Bippus 
© 2024 Julie A. Kierstead |
|
Layia discoidea Rayless layia, Rayless tidytips
• rare native
Annual herb 
© 2023 Mike Russler 
© 2023 Mike Russler 
© 2023 Mike Russler |
|
Leptosiphon ambiguus Serpentine leptosiphon
• rare native
Annual herb 
© 2024 Steve Matson 
© 2024 Steve Matson 
© 2024 Steve Matson |
|
Leptosiphon nuttallii ssp. howellii Mt. tedoc leptosiphon
• rare native
Perennial herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Lessingia arachnoidea Crystal springs lessingia
• rare native
Annual herb 
© 2019 Joerg Lohse 
© 2019 Patrick Furtado 
© 2019 Brittany Burnett |
|
Lessingia micradenia var. glabrata Smooth lessingia
• rare native
Annual herb 
© 2019 Ken Hickman 
© 2020 R.A. Chasey 
© 2019 Julia King |
|
Lessingia micradenia var. micradenia Mt. tamalpais lessingia
• rare native
Annual herb 
© 2019 David Greenberger 
© 2017 Scott Yarger 
© 2023 R.A. Chasey |
|
Lessingia ramulosa Sonoma lessingia
native
Annual herb 
© 2013 BOB CASE 
© 2020 Paul Aigner 
© 2021 R.A. Chasey |
|
Lewisia oppositifolia Opposite leaved lewisia, Oppositeleaf lewisia
• rare native
Perennial herb 
© 2011 John Doyen 
© 2011 John Doyen 
© 2011 John Doyen |
|
Lewisia stebbinsii Stebbins' lewisia, Stebbins's lewisia
• rare native
Perennial herb 
© 2020 Dee Shea Himes  © 2015 John Doyen 
© 2017 Adam Chasey |
|
Lilium bolanderi Bolander's lily
• rare native
Perennial herb (bulb) 
© 2018 Anna Sereno 
© 2018 Anna Sereno 
© 2020 Kolby Lundgren |
|
Lilium pardalinum ssp. vollmeri Vollmer's lily
• rare native
Perennial herb (bulb) 
© 2022 Mary Ann Machi 
© 2022 Mary Ann Machi 
© 2023 Mary Ann Machi |
|
Lomatium ciliolatum Yolla bolly biscuitroot, Yolla bolly lomatium
native
Perennial herb  © 2011 Steve Matson  © 2011 Steve Matson  © 2019 John Doyen |
|
Lomatium ciliolatum var. ciliolatum Yolla bolly biscuitroot, Yolla bolly lomatium
native
Perennial herb © 2011 Steve Matson © 2011 Steve Matson © 2019 John Doyen |
|
Lomatium congdonii Congdon's lomatium, Mariposa desertparsley
• rare native
Perennial herb 
© 2020 Matt Berger 
© 2024 Mike Russler 
© 2024 Mike Russler |
|
Lomatium dasycarpum ssp. dasycarpum Woolly fruited lomatium, Woollyfruit desertparsley
native
Perennial herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Lomatium engelmannii Engelmann's desertparsley, Engelmann's lomatium
• rare native
Perennial herb 
© 2018 Matt Berger  © 2006 Dean Wm. Taylor, Ph.D. 
© 2019 Julie A. Kierstead |
|
Lomatium hooveri Hoover's lomatium
• rare native
Perennial herb 
© 2015 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Lomatium howellii Howell's biscuitroot, Howell's lomatium
• rare native
Perennial herb  © 2008 Keir Morse  © 2008 Keir Morse 
© 2018 Claire Brown |
|
Lomatium tracyi Tracy's desertparsley, Tracy's lomatium
• rare native
Perennial herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Lupinus constancei Lassics lupine
• rare native
Perennial herb 
© 2021 Dee Shea Himes  © Amelia Ryan  © 2008 Jennifer L. Kalt |
|
Lupinus croceus Mt. eddy lupine
native
Perennial herb 
© 2011 Steve Matson 
© 2014 Steve Matson 
© 2011 Steve Matson |
|
Lupinus croceus var. croceus Saffron flowered lupine
native
Perennial herb 
© 2019 Matt Berger 
© 2020 Matt Berger 
© 2020 Matt Berger |
|
Lupinus croceus var. pilosellus Mt. eddy lupine, Saffron flowered lupine
• rare native
Perennial herb 
© 2022 Julie A. Kierstead 
© 2022 Julie A. Kierstead 
© 2022 Julie A. Kierstead |
|
Lupinus spectabilis Shaggyhair lupine
• rare native
Annual herb 
© 2020 Matt Berger 
© 2020 Matt Berger 
© 2022 Mike Russler |
|
Micranthes howellii Howell's saxifrage
• rare native
Perennial herb 
© 2024 Steve Conger 
© 2023 Dana York 
© 2024 Mary Ann Machi |
|
Minuartia decumbens Lassicus stitchwort, The lassics sandwort
native
Perennial herb  © 2018 Jeb Bjerke  © 2018 Jeb Bjerke  © 2018 Jeb Bjerke |
|
Minuartia howellii Howell's sandwort, Howell's stitchwort
native
Perennial herb  © 2008 Nathan Bello  © 2008 Nathan Bello  © 2008 Nathan Bello |
|
Minuartia rosei Peanut sandwort, Peanut stitchwort
native
Perennial herb 
© 2017 Julie A. Kierstead 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Minuartia stolonifera Scott mtn. sandwort, Stolon sandwort
native
Perennial herb 
© 2021 Julie A. Kierstead 
© 2021 Julie A. Kierstead  © 1996 Dean Wm. Taylor |
|
Monardella follettii Follett's monardella
• rare native
Shrub 
© 2020 Cheryl Ballantyne 
© 2020 Cheryl Ballantyne 
© 2019 David Greenberger |
|
Monardella palmeri Palmer's monardella
• rare native
Perennial herb (rhizomatous)  © 2001 CDFA  © 2012 Chris Winchell  © 2012 Chris Winchell |
|
Monardella purpurea Serpentine monardella, Siskiyou monardella
native
Perennial herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2022 R.A. Chasey |
|
Monardella stebbinsii Feather river monardella, Stebbins's monardella
• rare native
Perennial herb (rhizomatous) 
© 2019 David popp  © 2006 Dr. Mark S. Brunell 
© 2017 David popp |
|
Monardella villosa ssp. villosa Coyote mint
native
Perennial herb 
© 2021 Ken Lunders 
© 2012 Terrence Gosliner 
© 2015 James Gonsman |
|
Navarretia jepsonii Jepson's navarretia, Jepson's pincushionplant
• rare native
Annual herb 
© 2020 John Game 
© 2019 Steve Matson 
© 2016 Steve Matson |
|
Navarretia linearifolia ssp. pinnatisecta Pinnate-leaved navarretia
• rare native
Annual herb 
© 2021 Charles Russell 
© 2021 Charles Russell 
© 2021 Charles Russell |
|
Navarretia mitracarpa Paso robles navarretia
native
Annual herb 
© 2022 Mike Russler 
© 2019 David Greenberger 
© 2022 Mike Russler |
|
Navarretia paradoxiclara Navarretia
• rare native
Annual herb 
© 2019 David Greenberger  © 2016 Leigh Johnson  © 2016 Leigh Johnson |
|
Navarretia paradoxinota Navarretia
• rare native
Annual herb 
© 2018 John Game 
© 2017 John Game 
© 2020 Tim Miller |
|
Navarretia rosulata Marin county navarretia, San anselmo navarretia
• rare native
Annual herb 
© 2019 David Greenberger 
© 2022 R.A. Chasey 
© 2016 Richard Chasey |
|
Nemacladus montanus Mountain nemacladus, Mountain threadplant
native
Annual herb 
© 2022 Paul Aigner 
© 2022 Paul Aigner 
© 2021 R.A. Chasey |
|
Noccaea fendleri ssp. californica Kneeland prairie pennycress
• rare native
Perennial herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Noccaea fendleri ssp. glauca Pennycress
native
Perennial herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Orthocarpus pachystachyus Shasta orthocarpus, Shasta owl's clover
• rare native
Annual herb 
© 2020 Dean Taylor 
© 2020 Dean Taylor  © 1996 Dean Wm. Taylor |
|
Packera clevelandii Cleveland's ragwort
native
Perennial herb 
© 2012 Jean Pawek 
© 2018 Paul Aigner 
© 2018 Paul Aigner |
|
Packera eurycephala var. eurycephala Widehead groundsel
native
Perennial herb 
© 2019 Paul Aigner 
© 2019 Paul Aigner 
© 2016 David Greenberger |
|
Packera eurycephala var. lewisrosei Lewis' groundsel
• rare native
Perennial herb 
© 2019 David popp 
© 2016 David popp 
© 2018 David popp |
|
Packera greenei Flame ragwort
native
Perennial herb 
© 2019 Spencer Riffle 
© 2019 Spencer Riffle 
© 2019 Steve Matson |
|
Packera layneae Layne's ragwort
• rare native
Perennial herb 
© 2020 Matt Berger 
© 2022 Charles Russell 
© 2021 Debra Ayres |
|
Packera macounii Siskiyou mountain ragwort
• rare native
Perennial herb 
© 2022 Ryan O'Dell 
© 2022 Ryan O'Dell 
© 2022 Ryan O'Dell |
|
Pediomelum californicum California indian breadroot
native
Perennial herb 
© 2022 Catherine Chang 
© 2023 Helen Hancock 
© 2019 David Greenberger |
|
Penstemon filiformis Thread leaved beardtongue, Threadleaf beardtongue
• rare native
Perennial herb 
© 2015 Steve Matson 
© 2019 Julie Kierstead Nelson 
© 2015 Steve Matson |
|
Penstemon parvulus Short stalk penstemon, Small penstemon
native
Perennial herb 
© 2011 Dana York 
© 2011 Dana York 
© 2023 Alaine Arslan |
|
Perideridia bacigalupii Bacigalupi's yampah, Mother lode yampah
• rare native
Perennial herb  © 2007 Chris Winchell  © 2007 Chris Winchell  © 2007 Chris Winchell |
|
Perideridia leptocarpa Narrow seeded yampah, Narrowseed yampah
• rare native
Perennial herb 
© 2012 Steve Matson 
© 2012 Steve Matson 
© 2012 Steve Matson |
|
Perideridia pringlei Adobe yampah
• rare native
Perennial herb 
© 2023 Mike Russler 
© 2023 Mike Russler 
© 2023 Mike Russler |
|
Phacelia breweri Brewer's phacelia
native
Annual herb 
© 2021 Helen Hancock 
© 2022 Helen Hancock 
© 2022 Helen Hancock |
|
Phacelia corymbosa Serpentine phacelia
native
Perennial herb 
© 2021 R.A. Chasey 
© 2017 David popp 
© 2021 R.A. Chasey |
|
Phacelia greenei Scott valley phacelia
• rare native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2024 Jordan Collins |
|
Phacelia leonis Siskiyou phacelia
• rare native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Phacelia phacelioides Mt. Diablo phacelia
• rare native
Annual herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Phacelia pringlei Pringle's phacelia
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2011 Steve Matson |
|
Phlox hirsuta Hairy phlox, Yreka phlox
• rare native
Perennial herb 
© 2024 Bob Mason 
© 2022 Julie A. Kierstead 
© 2019 Barbara Peck |
|
Pinguicula macroceras California butterwort
• rare native
Perennial herb (carnivorous) 
© 2017 John Game 
© 2017 Steve Matson 
© 2018 John Game |
|
Pinguicula macroceras var. macroceras California butterwort
• rare native
Perennial herb (carnivorous)
© 2017 John Game
© 2017 Steve Matson
© 2018 John Game |
|
Pinus balfouriana ssp. balfouriana Klamath foxtail pine
native
Tree 
© 2021 Glenn Fine 
© 2022 Dana York 
© 2015 Julie A. Kierstead |
|
Poa piperi Piper's blue grass, Piper's bluegrass
• rare native
Perennial grass (rhizomatous) 
© 2017 Dana York 
© 2017 Dana York 
© 2017 Dana York |
|
Polemonium eddyense Mt. Eddy sky pilot
• rare native
Perennial herb 
© 2020 Dana York 
© 2011 Steve Matson 
© 2019 Chasey |
|
Polystichum lemmonii Lemmon's hollyfern, Lemmon's sword fern
native
Fern 
© 2020 R.A. Chasey 
© 2020 R.A. Chasey  © 2007 Neal Kramer |
|
Prosartes parvifolia Siskiyou bells
• rare native
Perennial herb  © 2010 Ray Collett  © 2010 Ray Collett  © 2010 Ray Collett |
|
Pseudotrillium rivale Siskiyou wakerobin
native
Perennial herb 
© 2023 Steve Conger 
© 2024 Steve Conger 
© 2023 Dana York |
|
Pyrrocoma racemosa var. congesta Clustered goldenweed, Del norte pyrrocoma
• rare native
Perennial herb 
© 2007 Keir Morse 
© 2007 Keir Morse 
© 2007 Keir Morse |
|
Pyrrocoma racemosa var. pinetorum Clustered goldenweed, Pine pyrrocoma
• rare native
Perennial herb 
© 2020 joaquin hale 
© 2020 joaquin hale 
© 2020 joaquin hale |
|
Quercus durata var. durata Leather oak
native
Shrub 
© 2022 Hunter Breck 
© 2020 Charles Russell 
© 2020 R.A. Chasey |
|
Raillardella pringlei Showy raillardella
• rare native
Perennial herb (rhizomatous) 
© 2020 David Greenberger 
© 2019 Steve Matson 
© 2019 John Game |
|
Rudbeckia glaucescens Waxy coneflower
native
Perennial herb 
© 2020 R.A. Chasey 
© 2018 Anna Sereno 
© 2022 Dee Shea Himes |
|
Rudbeckia klamathensis Klamath coneflower
native
Perennial herb 
© 2018 Julie Kierstead 
© 2023 Dana York 
© 2023 Dana York |
|
Salix breweri Brewer's willow, Serpentine willow
native
Shrub 
© 2022 Ryan O'Dell 
© 2021 R.A. Chasey 
© 2024 R.A. Chasey |
|
Salix delnortensis Del norte willow
• rare native
Shrub 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Sanguisorba officinalis Great burnet, Official burnet
• rare native
Perennial herb (rhizomatous)  © 2008 Keir Morse  © 2008 Keir Morse  © 2013 Asa Spade |
|
Sanguisorba officinalis ssp. microcephala Great burnet, Official burnet
• rare native
Perennial herb (rhizomatous) © 2008 Keir Morse © 2008 Keir Morse © 2013 Asa Spade |
|
Sanicula peckiana Peck's blacksnakeroot, Peck's sanicle
• rare native
Perennial herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Sedum albomarginatum Feather river stonecrop
• rare native
Perennial herb 
© 2016 David popp 
© 2022 Ryan O'Dell 
© 2022 Ryan O'Dell |
|
Sedum citrinum Blue creek stonecrop
• rare native
Perennial herb 
© 2019 Jonathan Lee 
© 2019 Jonathan Lee  © 2014 Peter Zika |
|
Sedum eastwoodiae Red mountain sedum, Red mountain stonecrop, Red mtn. stonecrop
native
Perennial herb  © 2014 Carex Working Group  © 2003 BLM,Arcata Field Office 
© 2024 Ryan O'Dell |
|
Sedum laxum ssp. laxum Rose flowered stonecrop, Roseflower stonecrop
native
Perennial herb 
© 2023 Dana York 
© 2023 Dana York  © 2008 Ray Stephenson |
|
Sidalcea hickmanii ssp. anomala Cuesta pass checkerbloom
• rare native
Perennial herb 
© 2020 David Greenberger  © 2006 Doreen L. Smith 
© 2020 David Greenberger |
|
Sidalcea hickmanii ssp. viridis Marin checkerbloom
• rare native
Perennial herb |
|
Silene campanulata ssp. campanulata Red mountain catchfly, Red mtn. catchfly
• rare native
Perennial herb 
© 2019 John Game  © 2015 Cherilyn Burton  © 2015 Cherilyn Burton |
|
Silene campanulata ssp. glandulosa Bell catchfly, Campanulate catchfly, Red mountain catchfly
native
Perennial herb 
© 2019 Matt Berger 
© 2022 Jamie Spielmann 
© 2022 Jamie Spielmann |
|
Silene serpentinicola Serpentine catchfly
• rare native
Perennial herb (rhizomatous) 
© 2023 Dana York 
© 2023 Dana York 
© 2023 Dana York |
|
Solidago guiradonis Guirado goldenrod, Guirado's goldenrod
• rare native
Perennial herb (rhizomatous) 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2021 Mike Russler |
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Stipa lemmonii var. pubescens Pubescent needle grass
• rare native
Perennial grass |
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Streptanthus barbatus Pacific jewelflower
native
Perennial herb 
© 2011 Steve Matson 
© 2020 R.A. Chasey 
© 2020 David Greenberger |
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Streptanthus barbiger Bearded jewelflower
• rare native
Annual herb 
© 2020 Joey Santore 
© 2020 Joey Santore 
© 2020 Terrence Gosliner |
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Streptanthus batrachopus Mt. Tamalpais jewelflower
• rare native
Annual herb 
© 2020 Hunter Breck  © 2012 Aaron Schusteff 
© 2019 David Greenberger |
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Streptanthus brachiatus Socrates mine jewelflower
native
Perennial herb 
© 2020 David Greenberger 
© 2017 Don Loarie 
© 2017 Don Loarie |
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Streptanthus brachiatus ssp. brachiatus Socrates mine jewel flower, Socrates mine jewelflower
• rare native
Perennial herb
© 2020 David Greenberger 
© 2021 R.A. Chasey 
© 2017 Don Loarie |
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Streptanthus brachiatus ssp. hoffmanii Freed's jewel flower, Socrates mine jewelflower
• rare native
Perennial herb 
© 2019 R.A. Chasey
© 2017 Don Loarie
© 2017 Don Loarie |
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Streptanthus breweri var. breweri Brewer's jewelflower
native
Annual herb 
© 2021 Charles Russell 
© 2022 Ryan O'Dell 
© 2022 Mike Russler |
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Streptanthus breweri Brewer's jewelflower
native
Annual herb
© 2021 Charles Russell
© 2022 Ryan O'Dell
© 2022 Mike Russler |
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Streptanthus drepanoides Sickle fruit jewel flower, Sicklefruit jewelflower
• rare native
Annual herb 
© 2018 Julie Kierstead Nelson 
© 2022 David popp 
© 2023 Ryan O'Dell |
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Streptanthus glandulosus ssp. albidus Metcalf canyon jewelflower
native
Annual herb 
© 2020 Joerg Lohse 
© 2020 Joerg Lohse 
© 2020 R.A. Chasey |
|
Streptanthus glandulosus ssp. glandulosus Bristly jewelflower
native
Annual herb 
© 2003 Keir Morse 
© 2020 Stacie Wolny 
© 2021 Bryant Baker |
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Streptanthus glandulosus ssp. niger Tiburon jewel-flower
• rare native
Annual herb 
© 2022 Michael Heine 
© 2016 Jane Huber 
© 2021 R.A. Chasey |
|
Streptanthus glandulosus ssp. pulchellus Mt. Tamalpais jewel flower
• rare native
Annual herb 
© 2020 David Greenberger 
© 2019 David Greenberger 
© 2019 David Greenberger |
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Streptanthus glandulosus ssp. sonomensis Uncommon jewelflower
native
Annual herb 
© 2015 James Gonsman 
© 2019 R.A. Chasey 
© 2019 R.A. Chasey |
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Streptanthus breweri var. hesperidis Green jewel-flower
• rare native
Annual herb 
© 2021 Charles Russell 
© 2023 Morgan Stickrod 
© 2021 Charles Russell |
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Streptanthus hesperidis Green jewel-flower
• rare native
Annual herb
© 2021 Charles Russell
© 2023 Morgan Stickrod
© 2021 Charles Russell |
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Streptanthus howellii Howell's jewel flower, Howell's jewelflower
• rare native
Perennial herb  © 1990 Dean Wm. Taylor  © Rick York and CNPS  © 2005 Shawn DeCew |
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Streptanthus insignis ssp. insignis Plumed jewelflower, San Benito jewelflower
native
Annual herb 
© 2019 Matt Berger 
© 2023 Mike Russler 
© 2019 Matt Berger |
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Streptanthus morrisonii Morrison's jewelflower
native
Perennial herb 
© 2019 Cat Chang 
© 2021 David Greenberger 
© 2021 Roger Raiche |
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Streptanthus morrisonii ssp. elatus Three peaks jewel flower, Three peaks jewelflower
• rare native
Perennial herb 
© 2022 Ryan O'Dell 
© 2022 Ryan O'Dell 
© 2023 Ryan O'Dell |
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Streptanthus morrisonii ssp. hirtiflorus Dorr's cabin jewel flower, Dorr's cabin jewelflower
• rare native
Perennial herb  © 1998 Dean Wm. Taylor  © 1998 John Game |
|
Streptanthus morrisonii ssp. kruckebergii Kruckeberg's jewel flower, Krukeberg's jewelflower
• rare native
Perennial herb © 1998 Dean Wm. Taylor © 1998 John Game |
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Streptanthus morrisonii ssp. morrisonii Morrison's jewel flower, Morrison's jewelflower
• rare native
Perennial herb © 1998 Dean Wm. Taylor © 1998 John Game |
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Streptanthus polygaloides Milkwort jewelflower
native
Annual herb 
© 2019 Belinda Lo 
© 2023 Mike Russler 
© 2019 Alison Sheehey |
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Streptanthus vernalis Early jewel-flower
• rare native
Annual herb 
© 2019 Joey Santore 
© 2019 Joey Santore 
© 2019 Joey Santore |
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native
Annual herb 
© 2023 Ryan O'Dell  © 2016 Amelia Ryan  © Amelia Ryan |
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Toxicoscordion fontanum Marsh zigadenus
• rare native
Perennial herb 
© 2020 Susan McDougall 
© 2020 Susan McDougall 
© 2021 Cynthia Powell |
|
Trichostema laxum Turpentine weed
native
Annual herb 
© 2023 Steve Conger 
© 2020 John Game 
© 2021 Steve Laymon |
|
Trichostema rubisepalum Hernandez bluecurls
• rare native
Annual herb 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2021 Mike Russler |
|
Trifolium longipes ssp. elmeri Elmer's clover
native
Perennial herb 
© 2022 Dana York 
© 2020 R.A. Chasey 
© 2020 R.A. Chasey |
|
Trifolium longipes ssp. oreganum Oregon clover
native
Perennial herb 
© 2009 Dana York 
© 2009 Dana York  © 2013 Dana York |
|
Triteleia crocea Yellow brodiaea, Yellow triplet lily, Yellow triteleia
native
Perennial herb 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2021 Steve Matson |
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Triteleia crocea var. crocea Yellow triteleia
• rare native
Perennial herb (bulb) 
© 2023 Amy Rachkowski 
© 2023 Amy Rachkowski 
© 2023 Bryce Ryals |
|
Triteleia crocea var. modesta Trinity mountains pretty face, Yellow triteleia
• rare native
Perennial herb (bulb) 
© 2023 Morgan Stickrod 
© 2023 Seth Beres 
© 2022 Zane Walker |
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Triteleia ixioides ssp. cookii Cook's triteleia
• rare native
Perennial herb (bulb)  © 2000 Joseph Dougherty/ecology.org |
|
Triteleia peduncularis Long ray brodiaea, Long rayed brodiaea, Marsh triteleia
native
Perennial herb 
© 2021 Suzanne L. Weakley 
© 2020 John Game 
© 2021 Suzanne L. Weakley |
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Vancouveria chrysantha Golden inside out flower, Golden vancouveria, Siskiyou inside out flower
• rare native
Perennial herb (rhizomatous) 
© 2018 John Game 
© 2020 Kolby Lundgren  © 2015 John Doyen |
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Verbena californica California vervain, Red hills vervain
• rare native
Perennial herb 
© 2019 David Greenberger 
© 2017 David Greenberger 
© 2019 David Greenberger |
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Veronica copelandii Copeland's speedwell
• rare native
Perennial herb 
© 2014 Steve Matson 
© 2019 Julie Kierstead Nelson 
© 2019 Dana York |
|
Viola cuneata Wedge leaf violet, Wedgeleaf violet
native
Perennial herb 
© 2021 Steve Matson 
© 2017 Steve Matson 
© 2006 Steve Matson |
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Viola hallii Hall's violet, Oregon violet
native
Perennial herb 
© 2021 Steve Matson 
© 2017 Steve Matson 
© 2021 Steve Matson |
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Viola primulifolia ssp. occidentalis Western bog violet
• rare native
Perennial herb (rhizomatous) 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
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Zeltnera trichantha Alkali centaury
native
Annual herb 
© 2021 Charles Russell 
© 2021 Charles Russell 
© 2019 Paul Aigner |
