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Cowell-Purisima Trail
San Mateo Coast California Coastal Trail System, San Mateo County San Mateo County |
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| Toni Corelli / Botanist/Volunteer (2013-07-22) | ||||||
| 152 PLANTS |
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Achillea millefolium Common yarrow
native
Perennial herb 
© 2022 Andy Ford 
© 2020 Bob Sweatt 
© 2018 Gary McDonald |
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Agrostis exarata Spike bentgrass, Spike redtop
native
Perennial grass 
© 2022 Teal Derrer 
© 2021 David popp 
© 2022 John Rawlings |
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Agrostis microphylla Little leaf bentgrass, Small leaf bentgrass, Small leaved bentgrass
native
Annual grass 
© 2023 John Rawlings 
© 2023 John Rawlings 
© 2023 John Rawlings |
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Alnus rubra Oregon alder, Red alder
native
Tree, Shrub 
© 2023 Michael Perlmutter 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey |
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Ambrosia chamissonis Beach bur, Silver beachweed
native
Perennial herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2017 Ron Vanderhoff |
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Anagallis arvensis Scarlet pimpernel
non-native
Annual herb 
© 2017 B.J. Dion 
© 2018 Stacie Wolny 
© 2017 B.J. Dion |
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Angelica hendersonii Coast angelica, Henderson's angelica
native
Perennial herb 
© 2020 Suzanne L. Weakley 
© 2021 Jamie Spielmann 
© 2022 Diana Wahl |
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Artemisia californica California sagebrush, Coast sagebrush, Coastal sage brush
native
Shrub 
© 2018 James Gonsman 
© 2019 Aaron Echols 
© 2018 Ron Vanderhoff |
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Artemisia douglasiana California mugwort, Douglas' sagewort
native
Perennial herb 
© 2022 Ron Vanderhoff 
© 2016 Glen Schneider 
© 2021 Mike Russler |
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Atriplex prostrata Fat-hen
non-native
Annual herb 
© 2013 Michael Mitchell 
© 2023 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
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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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Baccharis pilularis ssp. consanguinea Coyote brush
native
Shrub 
© 2024 Ron Vanderhoff 
© 2022 John Doyen 
© 2024 Mike Russler |
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Baccharis pilularis ssp. pilularis Coyote brush
native
Shrub 
© 2010 Michael Mitchell 
© 2022 Ryan O'Dell 
© 2019 Cynthia Powell |
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Brachypodium distachyon False brome, Purple false brome
• invasive non-native
Annual, Perennial grass 
© 2019 Ron Vanderhoff 
© 2021 John Rawlings 
© 2019 Ron Vanderhoff |
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Brassica rapa Common mustard, Field mustard, Rape mustard
• invasive non-native
Annual herb 
© 2024 David Wolfson 
© 2021 Diane Etchison 
© 2018 Angelique Herman |
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Briza minor Little quaking grass, Little quakinggrass, Little rattlesnake grass
non-native
Annual grass 
© 2023 R.A. Chasey 
© 2019 Gary McDonald 
© 2019 Gary McDonald |
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Bromus carinatus var. carinatus California brome, Mountain brome
native
Perennial grass 
© 2016 Richard Chasey  © 2013 Jean Pawek 
© 2021 Amelia Ryan |
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Bromus catharticus Rescue grass, Rescuegrass
non-native
Annual, Perennial grass 
© 2016 Andrew Longman 
© 2020 Ramona Robison 
© 2011 Toni Corelli |
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Bromus catharticus var. elatus Chilean brome
non-native
Annual, Perennial grass  © 2006 Steve Matson  © 2006 Steve Matson  © 2006 Steve Matson |
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Bromus diandrus Bromegrass, Ripgut brome, Ripgut grass
• invasive non-native
Annual grass 
© Alize 
© 2021 Richard Spjut 
© 2024 David popp |
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Bromus hordeaceus Soft brome, Soft chess
• invasive non-native
Annual grass 
© 2023 Ron Vanderhoff 
© 2018 Gary McDonald 
© 2018 Gary McDonald |
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Bromus sitchensis var. maritimus Maritime brome
native
Perennial grass 
© 2020 Ken Hickman 
© 2016 Richard Chasey 
© 2017 Toni Corelli |
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Cakile maritima European searocket, Sea rocket
• invasive non-native
Annual herb 
© 2019 Diane Etchison 
© 2021 R.A. Chasey 
© 2019 Diane Etchison |
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Cardamine oligosperma Bitter cress, Idaho bittercress
native
Annual, Perennial herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
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Carduus pycnocephalus ssp. pycnocephalus Italian thistle
non-native
Annual herb 
© 2020 Ron Vanderhoff 
© 2019 Gary McDonald 
© 2021 Ron Vanderhoff |
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Carpobrotus chilensis Sea fig
• invasive non-native
Perennial herb 
© 2018 Nicole Leatherman 
© 2016 Steve Matson 
© 2021 Cynthia Powell |
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Carpobrotus edulis Hottentot fig, Iceplant, Sea fig
• invasive non-native
Perennial herb 
© 2021 Michelle Karle 
© 2017 Lisa Miller 
© 2018 Michael Chasse |
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Castilleja affinis ssp. affinis Coast indian paintbrush
native
Perennial herb 
© 2006 Steve Matson 
© 2006 Steve Matson 
© 2019 Ron Vanderhoff |
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Castilleja wightii Wight's indian paint brush, Wight's paintbrush
native
Perennial herb 
© 2022 Suzanne L. Weakley 
© 2023 Beth Reuter 
© 2022 R.A. Chasey |
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Chlorogalum pomeridianum Amole, Soap plant, Soaproot
native
Perennial herb 
© 2019 Patrick Furtado 
© 2019 Patrick Furtado 
© 2019 Mary Conway |
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Cirsium vulgare Bull thistle
• invasive non-native
Perennial herb 
© 2017 James Bailey 
© 2020 Bob Sweatt 
© 2020 Bob Sweatt |
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Clarkia rubicunda Farewell to spring, Reddened clarkia, Ruby chalice clarkia
native
Annual herb 
© 2019 Stacie Wolny 
© 2021 John Game 
© 2019 Stacie Wolny |
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Clinopodium douglasii Yerba buena
native
Perennial herb 
© 2019 Gary McDonald 
© 2012 Gary McDonald 
© 2012 Gary McDonald |
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Conium maculatum Poison hemlock
• invasive non-native
Perennial herb 
© 2024 Cynthia Powell 
© 2013 Toni Corelli 
© 2016 Cynthia Powell |
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Convolvulus arvensis Field bindweed, Orchard morningglory
• invasive non-native
Perennial herb, Vine 
© 2022 Steve Matson 
© 2021 Ron Vanderhoff 
© 2022 Steve Matson |
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Cortaderia jubata Pampas grass, Purple pampas grass, Pampasgrass
• invasive non-native
Perennial grass 
© 2018 Ramona Robison 
© 2021 Michelle Karle 
© 2022 Michelle Karle |
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Cotula coronopifolia Brass buttons, Common brassbuttons
• invasive non-native
Perennial herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2018 Adam Chasey |
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Dactylis glomerata Orchard grass, Orchardgrass
• invasive non-native
Perennial grass 
© 2003 Steve Matson 
© 2003 Steve Matson 
© 2003 Steve Matson |
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Danthonia californica California oatgrass
native
Perennial grass 
© 2024 R.A. Chasey 
© 2021 John Rawlings 
© 2023 R.A. Chasey |
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Daucus pusillus American wild carrot, Rattlesnake weed
native
Annual herb 
© 2019 Diane Etchison 
© 2022 David Wolfson 
© 2019 John Rawlings |
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Delairea odorata Cape ivy
• invasive non-native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
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Deschampsia elongata Hairgrass, Slender hairgrass
native
Perennial grass 
© 2021 John Rawlings 
© 2021 John Rawlings 
© 2023 Robert Steers |
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Distichlis spicata Inland saltgrass, Salt grass, Saltgrass
native
Perennial grass 
© 2020 Matt Berger 
© 2019 Ron Vanderhoff 
© 2018 Emily Allen |
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Dudleya farinosa Bluff lettuce, North coast dudleya, Powdery liveforever
native
Perennial herb 
© 2022 Mike Russler 
© 2019 Amy Rapport 
© 2019 Heather Morrison |
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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 |
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Epilobium brachycarpum Annual fireweed, Autumn willowweed, Panicled willow herb
native
Annual herb 
© 2023 Mary Ann Machi 
© 2019 Ramona Robison 
© 2020 Ron Vanderhoff |
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Epilobium ciliatum ssp. ciliatum Fringed willowherb, Northern willow herb, Willow herb
native
Perennial herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
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Equisetum telmateia ssp. braunii Giant horse tail, Giant horsetail
native
Fern 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2022 Suzanne L. Weakley |
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Erigeron glaucus Seaside daisy, Seaside fleabane
native
Perennial herb 
© 2023 Toni Corelli 
© 2019 James Gonsman 
© 2018 Asa B Spade |
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Erigeron sumatrensis Tropical horseweed
non-native
Annual herb 
© 2021 Doug Allshouse 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
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Eriogonum latifolium Coast buckwheat, Coast eriogonum, Seaside buckwheat
native
Perennial herb 
© 2016 Suzanne L. Weakley 
© 2021 Dylan Neubauer 
© 2024 Cynthia Powell |
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Eriophyllum staechadifolium Lizard tail, Seaside golden yarrow, Seaside woolly sunflower
native
Perennial herb 
© 2024 Steve Conger 
© 2019 Mary Conway 
© 2014 James Gonsman |
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Erodium botrys Big heron bill, Broad leaf filaree, Long beaked filaree
non-native
Annual herb 
© 2006 Steve Matson 
© 2006 Steve Matson 
© 2006 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 Steve Matson 
© 2016 Steve Matson |
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Erysimum franciscanum Franciscan wallflower, San francisco wallflower
• rare native
Perennial herb 
© 2019 Patrick Furtado 
© 2018 Ken Lunders 
© 2019 Jane Huber |
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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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Eucalyptus globulus Blue gum, Tasmanian bluegum
• invasive non-native
Tree 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
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Euphorbia lathyris Compass plant, Gopher plant, Moleplant
• invasive non-native
Annual, Perennial herb 
© 2017 Aaron Echols 
© 2021 Mike Russler  © adiantumluz |
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Festuca bromoides Brome fescue
non-native
Annual grass 
© 2022 Diana Wahl 
© 2021 Toni Corelli 
© 2021 David popp |
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Festuca perennis Italian rye grass
• invasive non-native
Annual, Perennial grass 
© 2019 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
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Foeniculum vulgare Biscuit root, Sweet fennel
• invasive non-native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2023 Fred Roberts 
© 2022 Ryan O'Dell |
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Fragaria chiloensis Beach strawberry
native
Perennial herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
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Gamochaeta ustulata Featherweed
native
Perennial herb 
© 2019 Gary McDonald 
© 2019 Gary McDonald 
© 2019 Gary McDonald |
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Geranium dissectum Cranesbill, Cut leaved geranium, Cutleaf geranium
• invasive non-native
Annual herb 
© 2021 Al Keuter 
© 2024 Mike Russler 
© 2014 Bryan Derr |
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Geranium molle Crane's bill geranium, Dove's foot geranium, Dovefoot geranium
• invasive non-native
Annual, Perennial herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
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Grindelia stricta var. platyphylla Gumplant, Gumweed, Oregon gumweed
native
Perennial herb 
© 2020 Mary Conway 
© 2025 Mike Russler 
© 2025 Mike Russler |
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Helenium puberulum Rosilla, Sneezeweed
native
Perennial herb 
© 2021 Mike Russler 
© 2019 Patrick Furtado 
© 2018 Rachelle Gray |
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Helminthotheca echioides Bristly ox-tongue
• invasive non-native
Annual, Perennial herb 
© 2016 Hayley Ross 
© 2019 Rachelle Gray 
© 2012 Elizabeth Brusati |
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Heracleum maximum Common cow parsnip
native
Perennial herb 
© 2019 Bob Sweatt  © 2008 Neal Kramer 
© 2021 J.Fred Decker |
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Hesperocyparis macrocarpa Monterey cypress
native
Tree 
© 2017 Bryant Baker 
© 2019 Patrick Furtado 
© 2019 Cynthia Powell |
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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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Holodiscus discolor var. discolor Oceanspray
native
Shrub 
© 2022 R.A. Chasey 
© 2021 R.A. Chasey 
© 2010 Avis Boutell |
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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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Hypochaeris radicata Hairy cats ear, Hairy catsear, Rough cat's ear
• invasive non-native
Perennial herb 
© 2015 James Gonsman 
© 2017 Gary McDonald 
© 2016 Michael Mitchell |
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Iris douglasiana Douglas iris, Douglas' iris
native
Perennial herb 
© 2020 Susan McDougall 
© 2019 Patrick Furtado 
© 2022 Suzanne L. Weakley |
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Isolepis cernua Low bulrush
native
Annual grasslike herb 
© 2021 R.A. Chasey 
© 2023 R.A. Chasey 
© 2018 Ron Vanderhoff |
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Juncus patens Common rush, Spreading rush
native
Perennial grasslike herb 
© 2022 R.A. Chasey 
© 2022 R.A. Chasey 
© 2018 Emily Allen |
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Lathyrus vestitus var. vestitus Common pacific pea, Hillside pea, Wild sweetpea
native
Perennial herb 
© 2023 Steve Conger 
© 2022 Charles Russell 
© 2024 Ron Vanderhoff |
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Lepidium didymum Lesser swine cress
non-native
Annual herb 
© 2022 Shawna Martinez 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
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Lepidium draba Whitetop
• invasive non-native
Perennial herb 
© 2020 Ron Vanderhoff 
© 2021 Mike Russler 
© 2020 Ron Vanderhoff |
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Linum bienne Narrow leaved flax, Pale flax, Small flowered flax
non-native
Annual herb 
© 2019 Ken Lunders 
© 2021 Cameron Chabre 
© 2018 Cynthia Powell |
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Lonicera involucrata var. ledebourii Coast twinberry, Twinberry honeysuckle
native
Shrub 
© 2014 James Gonsman 
© 2022 Suzanne L. Weakley 
© 2010 Toni Corelli |
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Lotus corniculatus Bird's foot trefoil, Birdfoot deervetch, Broadleaf birdsfoot trefoil
• invasive non-native
Perennial herb 
© 2005 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
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Lupinus arboreus Coastal bush lupine, Yellow bush lupine
native
Shrub 
© 2020 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
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native
Shrub 
© 2022 Mary Sue Ittner 
© 2015 James Gonsman 
© 2022 Mary Sue Ittner |
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Lythrum hyssopifolia Hyssop loosestrife
• invasive non-native
Annual, Perennial herb 
© 2019 Diane Etchison 
© 2021 Cynthia Powell 
© 2020 Ron Vanderhoff |
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Madia sativa Chile tarweed, Coast tarweed, Coastal tarweed
native
Annual herb 
© 2013 Ron Vanderhoff 
© 2023 Margot Cunningham 
© 2021 Zoya Akulova-Barlow |
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Malva neglecta Common mallow, Dwarf mallow
non-native
Annual, Perennial herb 
© 2022 Bob Sweatt 
© 2019 Randy Huey 
© 2022 Bob Sweatt |
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Marah fabacea California man-root
native
Perennial herb, Vine 
© 2018 Gary McDonald 
© 2018 MCOSD EDRR 
© 2021 Cyril Guyot |
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Matricaria chamomilla German chamomile
non-native
Annual herb 
© 2011 Toni Corelli 
© 2017 John Sayers  © 2003 Filippo Chierici |
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Matricaria discoidea Pineapple weed
native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2018 Stacie Wolny |
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Medicago polymorpha Bur clover, Bur medic, California burclover
• invasive non-native
Annual herb 
© 2019 Gary McDonald 
© 2019 Gary McDonald 
© 2019 Gary McDonald |
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Melilotus indicus Annual yellow sweetclover, Sourclover
non-native
Annual herb 
© 2019 Randy Huey 
© 2019 Randy Huey 
© 2017 Rosalie Benitez |
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Mentha pulegium Pennyroyal
• invasive non-native
Perennial herb 
© 2023 R.A. Chasey 
© 2022 R.A. Chasey 
© 2015 Chris Jaster |
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Mimulus aurantiacus var. aurantiacus Orange Bush Monkeyflower
native
Shrub 
© 2024 Steve Conger 
© 2024 Steve Conger 
© 2019 Mary Gerbic |
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Mimulus guttatus Seep monkey flower, Yellow monkey flower
native
Annual, Perennial herb (rhizomatous) 
© 2019 Stacie Wolny 
© 2015 James Gonsman 
© 2019 Stacie Wolny |
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Myoporum laetum Lollypop tree, Ngaio tree
• invasive non-native
Tree, Shrub 
© 2018 Ron Vanderhoff 
© 2017 James Bailey 
© 2022 Ron Vanderhoff |
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Navarretia squarrosa Skunkbush, Skunkweed
native
Annual herb 
© 2024 Mike Russler 
© 2019 Patrick Furtado 
© 2022 Suzanne L. Weakley |
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Oxalis pes-caprae Bermuda buttercup, Sourgrass
• invasive non-native
Perennial herb 
© 2019 Gary McDonald 
© 2017 Angelique Herman 
© 2015 Richard Chasey |
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Pinus radiata Monterey pine
native
Tree 
© 2011 Toni Corelli 
© 2012 Michael Mitchell 
© 2012 Michael Mitchell |
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Plantago coronopus Buckhorn plantain, Cut leaf plantain
• invasive non-native
Annual herb 
© 2022 R.A. Chasey 
© 2021 Zoya Akulova-Barlow 
© 2017 MCOSD Restoration Crew |
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Plantago lanceolata English plantain, Narrow leaved plantain, Ribgrass
• invasive non-native
Perennial herb 
© 2008 Steve Matson 
© 2019 Joe Engelbrecht 
© 2021 Ken Lunders |
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Plantago maritima Alkali plantain, Goose tongue, Maritime plantain
native
Perennial herb 
© 2018 Adam Chasey 
© 2021 Jamie Spielmann 
© 2020 Ken Hickman |
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Plantago subnuda Mexican plantain, Naked plantain, Tall coastal plantain
native
Perennial herb 
© 2019 Patrick Furtado 
© 2022 Dianne Lake 
© 2009 Toni Corelli |
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Polygonum aviculare ssp. depressum Prostrate knotweed
non-native
Annual, Perennial herb 
© 2016 Barbara Boethling 
© 2021 Ron Vanderhoff 
© 2014 Richard Chasey |
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Polypogon monspeliensis Annual beard grass, Rabbitsfoot grass
• invasive non-native
Annual grass 
© 2008 Steve Matson 
© 2014 Steve Matson 
© 2008 Steve Matson |
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Polystichum munitum Western sword fern, Western swordfern
native
Fern 
© 2021 Julie A. Kierstead 
© 2022 Jerry Murray 
© 2011 Toni Corelli |
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Pseudognaphalium californicum Ladies' tobacco
native
Annual, Perennial herb 
© 2019 Gary McDonald 
© 2020 Steven M Norris 
© 2021 Ron Vanderhoff |
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Pseudognaphalium luteoalbum Jersey cudweed
non-native
Annual herb 
© 2021 Ron Vanderhoff 
© 2019 Diane Etchison 
© 2015 Chris Jaster |
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Pseudognaphalium ramosissimum Pink cudweed
native
Annual, Biennial herb 
© 2021 R.A. Chasey 
© 2018 Parker Santiago 
© 2017 Gary McDonald |
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Pseudognaphalium stramineum Cottonbatting plant
native
Perennial herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2017 Gary McDonald |
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Raphanus sativus Cultivated radish, Jointed charlock, Wild radish
• invasive non-native
Annual, Biennial herb 
© 2017 Lisa Miller 
© 2020 Ron Vanderhoff 
© 2023 Julia Markey |
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Ribes sanguineum var. glutinosum Blood currant, Flowering currant, Pink flowering currant
native
Shrub 
© 2025 Mary Ann Machi 
© 2016 Steve Matson 
© 2017 Steve Matson |
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Rubus spectabilis Salmon berry, Salmonberry
native
Shrub 
© 2017 James Gonsman 
© 2022 Zoya Akulova-Barlow 
© 2016 Steve Matson |
|
Rubus ursinus California blackberry, Pacific blackberry
native
Vine, Shrub 
© 2018 Ken Lunders 
© 2019 Ron Vanderhoff 
© 2015 Kelli Kallenborn |
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Rumex acetosella Common sheep sorrel
• invasive non-native
Perennial herb 
© 2017 Gary McDonald 
© 2008 Steve Matson 
© 2019 Patrick Furtado |
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Rumex crispus Curly dock, Curly leaved dock, Rhubarb
• invasive non-native
Perennial herb 
© 2018 Tim Lewis 
© 2019 Diane Etchison 
© 2023 Ron Vanderhoff |
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Rumex transitorius Willow dock
native
Perennial herb 
© 2009 Toni Corelli 
© 2011 Toni Corelli 
© 2008 Toni Corelli |
|
Salix lasiolepis Arroyo willow
native
Tree, Shrub 
© 2019 Steve Matson 
© 2022 Ron Vanderhoff 
© 2020 Steve Matson |
|
Sambucus racemosa var. racemosa Pacific red elderberry
native
Shrub 
© 2021 R.A. Chasey 
© 2017 James Gonsman 
© 2014 James Gonsman |
|
Sanicula crassicaulis Gamble weed, Pacific blacksnakeroot, Pacific sanicle
native
Perennial herb 
© 2023 Steve Conger 
© 2023 Steve Conger 
© 2021 Steve Laymon |
|
Schoenoplectus americanus Chairmaker's bulrush
native
Perennial grasslike herb 
© 2021 Ron Vanderhoff 
© 2016 Joan Hampton 
© 2020 Ron Vanderhoff |
|
Scrophularia californica California bee plant, California figwort
native
Perennial herb 
© 2020 Bob Sweatt 
© 2006 Steve Matson 
© 2019 Cynthia Powell |
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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 |
|
Silene gallica Common catchfly, Windmill pink
non-native
Annual herb 
© 2019 Mary Wloch 
© 2017 Gary McDonald 
© 2019 Gary McDonald |
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Silybum marianum Blessed milkthistle, Milk thistle
• invasive non-native
Annual, Perennial herb 
© 2020 Nancy Hamlett 
© 2019 Marisa Persaud 
© 2018 Angelique Herman |
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Sisyrinchium bellum Western blue eyed grass
native
Perennial herb 
© 2024 Steve Conger 
© 2024 Ron Vanderhoff 
© 2019 Stacie Wolny |
|
Solanum americanum American black nightshade, Common nightshade, Small flowered nightshade
native
Annual, Perennial herb 
© 2009 Steve Matson 
© 2009 Steve Matson 
© 2009 Steve Matson |
|
Solanum nigrum Black nightshade
non-native
Annual herb 
© 2019 Julian Geoghegan 
© 2019 Patrick Furtado 
© 2021 Mike Russler |
|
Solanum umbelliferum Blue witch nightshade, Bluewitch nightshade
native
Shrub 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Sonchus asper ssp. asper Prickly sow thistle, Sow thistle
• invasive non-native
Annual herb 
© 2014 Gary McDonald 
© 2022 Ron Vanderhoff 
© 2014 Gary McDonald |
|
Sonchus oleraceus Common sow thistle, Common sowthistle, Sow thistle
non-native
Annual herb 
© 2019 Diane Etchison 
© 2015 Jesse Rorabaugh 
© 2024 Ron Vanderhoff |
|
Spergularia macrotheca var. macrotheca Sand spurrey, Sticky sand spurry, Sticky sandspurry
native
Perennial herb  © 2008 Steve Matson 
© 2017 B.J. Dion 
© 2020 David Wolfson |
|
Spergularia rubra Purple sand spurry, Red sandspurry, Ruby sandspurry
non-native
Annual, Perennial herb 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Stachys bullata California hedge nettle, California hedgenettle, Southern hedge nettle
native
Perennial herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Stachys rigida var. quercetorum Rough hedgenettle
native
Perennial herb 
© 2019 Ken Lunders 
© 2016 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Symphyotrichum chilense California aster, Pacific aster
native
Perennial herb 
© 2020 Suzanne L. Weakley 
© 2013 Arcangelo Wessells 
© 2018 Stacie Wolny |
|
Toxicodendron diversilobum Poison oak, Poisonoak, Western Poison Oak
native
Vine, Shrub 
© 2020 Ron Vanderhoff 
© 2019 Randy Huey 
© 2025 Mike Russler |
|
Trifolium campestre Field clover, Low hop clover
non-native
Annual herb 
© 2024 R.A. Chasey 
© 2023 R.A. Chasey 
© 2021 R.A. Chasey |
|
Trifolium dubium Shamrock clover, Little Hop Clover, Suckling clover
non-native
Annual herb 
© 2018 Stacie Wolny 
© 2022 Dana York 
© 2017 MCOSD EDRR |
|
Trifolium fragiferum Strawberry clover
non-native
Perennial herb 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2023 R.A. Chasey |
|
Trifolium repens White clover
non-native
Perennial herb 
© 2023 Ron Vanderhoff 
© 2007 Steve Matson 
© 2017 Gary McDonald |
|
Triticum aestivum Common wheat, Wheat
non-native
Annual grass 
© 2022 Lenihan Mazur 
© 2021 John Rawlings 
© 2011 Toni Corelli |
|
Typha angustifolia Nail rod, Narrow leaf cattail, Narrowleaf cattail
non-native
Perennial herb (aquatic) 
© 2019 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Urtica dioica ssp. gracilis American stinging nettle, California nettle
native
Perennial herb 
© 2020 Lynn Overtree 
© 2007 Toni Corelli 
© 2021 Chuck Kozak |
|
Veronica persica Bird's eye speedwell, Birdeye speedwell
non-native
Annual herb 
© 2019 Patrick Furtado 
© 2022 Bob Sweatt 
© 2022 Ron Vanderhoff |
|
Vicia gigantea Giant vetch
native
Perennial herb  © 2022 morganstickrod 
© 2006 Steve Matson 
© 2006 Steve Matson |
|
Vicia sativa ssp. sativa Garden vetch, Pubescent common vetch, Spring vetch
non-native
Annual herb, Vine 
© 2024 Mike Russler 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Vicia tetrasperma Four seeded vetch, Lentil vetch
non-native
Annual herb 
© 2009 Avis Boutell 
© 2009 Avis Boutell 
© 2019 Jackie Gamble |
|
Woodwardia fimbriata Chain fern, Giant chain fern, Giant chainfern
native
Fern 
© 2019 Julie Kierstead Nelson 
© 2020 R.A. Chasey 
© 2020 Julie A. Kierstead |
|
Zeltnera muehlenbergii Muehlenberg's centaury
native
Annual herb 
© 2019 Patrick Furtado 
© 2015 James Gonsman 
© 2011 Michael Perlmutter |
