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Half Moon Bay State Beach
San Mateo Coast San Mateo County San Mateo County |
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| Toni Corelli / Botanist/State Parks Volunteer (2013-04-20) | ||||||
| 210 PLANTS |
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Abronia latifolia Coastal sand verbena, Sand verbena, Yellow sand verbena
native
Perennial herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
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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 avenacea Pacific bentgrass
• invasive non-native
Perennial grass 
© 2025 Ron Vanderhoff 
© 2025 Ron Vanderhoff 
© 2022 Donald Burk |
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Albizia lophantha Albizia, Plume acacia, Stink bean
non-native
Tree, Shrub 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
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Allium triquetrum Three cornered leek, Threecorner leek, White flowered onion
• invasive non-native
Perennial herb (bulb) 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
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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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Ammophila arenaria Beachgrass, European beach grass, European beachgrass
• invasive non-native
Perennial grass 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
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Amsinckia spectabilis var. spectabilis Seaside fiddleneck
native
Annual herb 
© 2017 James Gonsman 
© 2023 Toni Corelli 
© 2015 Toni Corelli |
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Anthemis cotula Dog fennel, Mayweed, dog fennel, Stinking chamomile
• invasive non-native
Annual herb 
© 2017 Diane Etchison 
© 2019 Nathan Taxel 
© 2019 Dave Beller |
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Anthriscus caucalis Bur chervil
non-native
Annual herb, Vine 
© 2021 Aaron Echols 
© 2024 Ron Vanderhoff 
© 2020 Jennifer Mo |
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Aphyllon californicum ssp. californicum Broomrape
native
Perennial herb (parasitic) 
© 2022 R.A. Chasey 
© 2017 David Greenberger 
© 2024 D.L. Nguyen |
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Arctotheca prostrata prostrate cape weed, creeping capeweed
• invasive non-native
Annual, Perennial herb 
© 2024 David Wolfson 
© 2020 Lenihan Mazur 
© 2021 David Wolfson |
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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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Artemisia pycnocephala Beach sagewort, Coastal sagewort
native
Perennial herb 
© 2015 Toni Corelli 
© 2021 Zoya Akulova-Barlow 
© 2023 Cynthia Powell |
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Arundo donax Giant reed
• invasive non-native
Perennial grass 
© 2013 Miriam Sachs Martin 
© 2020 Jennifer Mo 
© 2018 Ron Vanderhoff |
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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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Avena fatua Wild oat, Wildoat
• invasive non-native
Annual grass 
© 2018 Gary McDonald 
© 2023 Ron Vanderhoff 
© 2023 Matt Berger |
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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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Bolboschoenus robustus Sturdy bullrush
native
Perennial grasslike herb 
© 2022 R.A. Chasey 
© 2022 R.A. Chasey 
© 2009 Toni Corelli |
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Brassica nigra Black mustard
• invasive non-native
Annual herb 
© 2021 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
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Brassica oleracea Cabbage
non-native
Annual herb 
© 2009 Toni Corelli 
© 2021 Zoya Akulova-Barlow 
© 2009 Toni Corelli |
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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 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 madritensis Foxtail chess, foxtail brome, Madrid brome, Spanish brome
non-native
Annual grass 
© 2022 Steve Matson 
© 2023 Stephen H Siemsen 
© 2015 Chris Jaster |
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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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Calystegia soldanella Beach morning glory, Beach morningglory
native
Perennial herb 
© 2020 David Greenberger 
© 2021 Hayley Ross 
© 2024 Cynthia Powell |
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Camissoniopsis cheiranthifolia ssp. cheiranthifolia Beach evening-primrose
native
Annual, Perennial herb 
© 2024 Mike Russler 
© 2024 Mike Russler 
© 2024 Mary Ann Machi |
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Capsella bursa-pastoris Shepherd's purse
non-native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
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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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Ceanothus thyrsiflorus var. thyrsiflorus Blue blossom
native
Tree, Shrub 
© 2019 Patrick Furtado 
© 2022 Mary Conway 
© 2022 Cynthia Powell |
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Chenopodium berlandieri Berlandier's goosefoot, Pit seed goosefoot
native
Annual herb 
© 2003 Keir Morse 
© 2003 Keir Morse 
© 2003 Keir Morse |
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Chenopodium californicum California goosefoot, Pigweed, Soaproot
native
Perennial herb 
© 2023 Mike Russler 
© 2023 Mike Russler 
© 2023 Mike Russler |
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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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Claytonia perfoliata ssp. perfoliata Claytonia, Miner's lettuce
native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
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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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Cyperus eragrostis Tall cyperus, Tall flatsedge
native
Perennial grasslike herb 
© 2016 Joan Hampton 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff |
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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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Datura stramonium Jimson weed, Jimsonweed
non-native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2020 Ron Vanderhoff |
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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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Diplacus aurantiacus Orange Bush Monkeyflower
native
Shrub 
© 2024 Steve Conger 
© 2024 Steve Conger 
© 2019 Mary Gerbic |
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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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Dittrichia graveolens Stinkwort
• invasive non-native
Annual herb 
© 2017 Bob Huttar 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
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Dysphania ambrosioides Mexican tea
non-native
Annual, Perennial herb 
© 2020 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
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Ehrharta erecta Panic veldtgrass, Upright veldt grass
• invasive non-native
Perennial grass 
© 2023 Rachel Suding 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
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Eleocharis macrostachya Common spikerush, Creeping spike rush, Pale spikerush
native
Perennial grasslike herb 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2003 Steve Matson |
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Elymus mollis ssp. mollis American dune grass, sea lyme grass
native
Perennial grass 
© 2021 Ramona Robison 
© 2021 Ramona Robison 
© 2009 Toni Corelli |
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Elymus triticoides Beardless wild rye
native
Perennial grass 
© 2024 Erin Bergman 
© 2021 Ron Vanderhoff 
© 2018 Rachelle Gray |
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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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Epilobium densiflorum Dense boisduvalia, Dense flowered boisduvalia, Dense flowered spike primrose
native
Annual herb 
© 2024 Steve Conger 
© 2009 BOB CASE 
© 2020 Bob Sweatt |
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Epipactis helleborine Broadleaf helleborine
non-native
Perennial herb 
© 2020 Cara Wilcox 
© 2019 Stacie Wolny 
© 2022 David Strauch |
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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 canadensis Canada horseweed
native
Annual herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2022 Mike Russler |
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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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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 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 |
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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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Erythranthe guttata Seep monkey flower, Yellow monkey flower
native
Annual, Perennial herb (rhizomatous) 
© 2019 Stacie Wolny 
© 2015 James Gonsman 
© 2019 Stacie Wolny |
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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 peplus Petty spurge
non-native
Annual herb 
© 2006 Steve Matson 
© 2022 Alice Cummings 
© 2018 MCOSD EDRR |
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Festuca arundinacea Alta fescue, Reed fescue, Tall fescue
• invasive non-native
Perennial grass 
© 2022 Cynthia Powell 
© 2020 Robert Steers 
© 2017 MCOSD EDRR |
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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 |
|
Fragaria chiloensis Beach strawberry
native
Perennial herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
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Frangula californica ssp. californica California coffeeberry
native
Shrub 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2019 Ron Vanderhoff |
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Fumaria officinalis Drug fumitory
• invasive non-native
Annual herb 
© 2021 stephen rosenthal 
© 2021 Mary Conway 
© 2021 Mary Conway |
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Galium aparine Cleavers, Common bedstraw, Goose grass
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2023 Julia Markey 
© 2020 Ron Vanderhoff |
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Gazania linearis Gazania, Treasure flower, Treasureflower
• invasive non-native
Perennial herb 
© 2016 Barbara Boethling 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
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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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Glebionis coronaria Crown daisy
• invasive non-native
Annual herb 
© 2019 Nicole Leatherman 
© 2018 Rachelle Gray 
© 2022 Jennifer Mo |
|
Grindelia stricta var. platyphylla Gumplant, Gumweed, Oregon gumweed
native
Perennial herb 
© 2020 Mary Conway 
© 2025 Mike Russler 
© 2025 Mike Russler |
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Hedera helix English ivy
• invasive non-native
Vine, Shrub 
© 2019 Claire Mallen 
© 2019 Ron Vanderhoff 
© 2022 Catherine Talbot |
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Helenium puberulum Rosilla, Sneezeweed
native
Perennial herb 
© 2021 Mike Russler 
© 2019 Patrick Furtado 
© 2018 Rachelle Gray |
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Heliotropium curassavicum var. oculatum Alkali heliotrope, Seaside heliotrope
native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2019 Rachelle Gray 
© 2021 Suzanne L. Weakley |
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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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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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Holcus lanatus Common velvetgrass, Velvet grass, Velvetgrass
• invasive non-native
Perennial grass 
© 2019 Bill Haley 
© 2024 David popp 
© 2019 Bill Haley |
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Hordeum brachyantherum ssp. brachyantherum Meadow barley
native
Perennial grass 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
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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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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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Kickxia spuria Fluellin, Roundleaf cancerwort
non-native
Perennial herb 
© 2020 David Wolfson 
© 2020 Vivian Neou 
© 2023 R.A. Chasey |
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Lactuca virosa Bitter lettuce, Poison wild lettuce
non-native
Perennial herb 
© 2019 Randy Huey 
© 2022 R.A. Chasey 
© 2010 Cynthia Powell |
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Lasthenia californica ssp. californica California goldfields
native
Annual herb 
© 2021 Charles Russell 
© 2022 Steve Matson 
© 2015 Toni Corelli |
|
Lasthenia californica ssp. macrantha Perennial goldfields
• rare native
Perennial herb 
© 2023 Mary Ann Machi 
© 2022 R.A. Chasey 
© 2017 David Greenberger |
|
Lasthenia minor Coastal goldfields, Smooth lasthenia, Woolly goldfields
native
Annual herb 
© 2007 Toni Corelli 
© 2019 James Gonsman 
© 2015 Toni Corelli |
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Lathyrus latifolius Everlasting pea, Perennial pea, Perennial sweet pea
non-native
Perennial herb 
© 2020 Jutta Burger 
© 2019 Cynthia Powell 
© 2021 Sherry Adams |
|
Lathyrus littoralis Beach pea, Silky beach pea
native
Perennial herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2020 Steve Conger |
|
Lepidium didymum Lesser swine cress
non-native
Annual herb 
© 2022 Shawna Martinez 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
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Lobularia maritima Sweet alyssum
• invasive non-native
Perennial herb 
© 2016 Michael Mitchell 
© 2016 Michael Mitchell 
© 2019 Patrick Furtado |
|
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 |
|
native
Shrub 
© 2022 Mary Sue Ittner 
© 2015 James Gonsman 
© 2022 Mary Sue Ittner |
|
Lysimachia arvensis Scarlet pimpernel
non-native
Annual herb 
© 2017 B.J. Dion 
© 2018 Stacie Wolny 
© 2017 B.J. Dion |
|
Lythrum hyssopifolia Hyssop loosestrife
• invasive non-native
Annual, Perennial herb 
© 2019 Diane Etchison 
© 2021 Cynthia Powell 
© 2020 Ron Vanderhoff |
|
Madia sativa Chile tarweed, Coast tarweed, Coastal tarweed
native
Annual herb 
© 2013 Ron Vanderhoff 
© 2023 Margot Cunningham 
© 2021 Zoya Akulova-Barlow |
|
Malva arborea Tree mallow
non-native
Shrub 
© 2021 Jennifer Mo 
© 2015 Richard Chasey 
© 2023 Kyle Suchy |
|
Malva nicaeensis Bull mallow
non-native
Annual herb 
© 2023 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Marah fabacea California man-root
native
Perennial herb, Vine 
© 2018 Gary McDonald 
© 2018 MCOSD EDRR 
© 2021 Cyril Guyot |
|
Marah oregana Coast man-root
native
Perennial herb, Vine 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
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 |
|
Melilotus indicus Annual yellow sweetclover, Sourclover
non-native
Annual herb 
© 2019 Randy Huey 
© 2019 Randy Huey 
© 2017 Rosalie Benitez |
|
Melilotus officinalis Yellow sweetclover
non-native
Annual, Biennial herb 
© 2020 Bob Sweatt 
© 2020 Bob Sweatt 
© 2020 Bob Sweatt |
|
Mentha pulegium Pennyroyal
• invasive non-native
Perennial herb 
© 2023 R.A. Chasey 
© 2022 R.A. Chasey 
© 2015 Chris Jaster |
|
Myoporum laetum Lollypop tree, Ngaio tree
• invasive non-native
Tree, Shrub 
© 2018 Ron Vanderhoff 
© 2017 James Bailey 
© 2022 Ron Vanderhoff |
|
Narcissus pseudonarcissus Daffodil
non-native
Perennial herb (bulb) 
© 2020 Ken Lunders 
© 2025 Ron Vanderhoff 
© 2017 MCOSD EDRR |
|
Nasturtium officinale Watercress
native
Perennial herb (aquatic) 
© 2012 Steve Matson 
© 2012 Steve Matson 
© 2012 Steve Matson |
|
Navarretia squarrosa Skunkbush, Skunkweed
native
Annual herb 
© 2024 Mike Russler 
© 2019 Patrick Furtado 
© 2022 Suzanne L. Weakley |
|
Oenanthe sarmentosa Pacific oenanthe, Water parsley
native
Perennial herb 
© 2021 Don Hollander 
© 2021 Ron Vanderhoff 
© 2021 Rosaleen |
|
Oenothera elata ssp. hookeri Common evening primrose, Evening primrose, Hooker's evening primrose
native
Perennial herb 
© 2020 Suzanne L. Weakley 
© 2018 Suzanne L. Weakley 
© 2018 Toni Corelli |
|
Olea europaea Olive
• invasive non-native
Tree, Shrub 
© 2022 Donald Burk 
© 2021 Thomas Reyes 
© 2022 Ron Vanderhoff |
|
Oxalis pes-caprae Bermuda buttercup, Sourgrass
• invasive non-native
Perennial herb 
© 2019 Gary McDonald 
© 2017 Angelique Herman 
© 2015 Richard Chasey |
|
Paspalum dilatatum Dallis grass, Dallisgrass
non-native
Perennial grass 
© 2024 David popp 
© 2024 David popp 
© 2021 Ron Vanderhoff |
|
Persicaria maculosa Spotted ladysthumb
non-native
Annual herb 
© 2020 R.A. Chasey 
© 2021 joaquin hale 
© 2021 joaquin hale |
|
Persicaria punctata Dotted smartweed
native
Perennial herb 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2022 Helen Hancock |
|
Phalaris aquatica Bulbous canarygrass, Harding grass
• invasive non-native
Perennial grass 
© 2024 Michael Chasse 
© 2021 Lenihan Mazur 
© 2024 John Rawlings |
|
Pinus radiata Monterey pine
native
Tree 
© 2011 Toni Corelli 
© 2012 Michael Mitchell 
© 2012 Michael Mitchell |
|
Piperia elegans ssp. elegans Elegant piperia
native
Perennial herb 
© 2018 Saskia Raether 
© 2022 Cynthia Powell 
© 2017 Nicole Mercier |
|
Plantago coronopus Buckhorn plantain, Cut leaf plantain
• invasive non-native
Annual herb 
© 2022 R.A. Chasey 
© 2021 Zoya Akulova-Barlow 
© 2017 MCOSD Restoration Crew |
|
Plantago lanceolata English plantain, Narrow leaved plantain, Ribgrass
• invasive non-native
Perennial herb 
© 2008 Steve Matson 
© 2019 Joe Engelbrecht 
© 2021 Ken Lunders |
|
Plantago major Common plantain
non-native
Perennial herb 
© 2019 Bob Sweatt 
© 2022 Diana Wahl 
© 2020 Ryan Carle |
|
Plantago maritima Alkali plantain, Goose tongue, Maritime plantain
native
Perennial herb 
© 2018 Adam Chasey 
© 2021 Jamie Spielmann 
© 2020 Ken Hickman |
|
Polycarpon tetraphyllum var. tetraphyllum Four leaved allseed
non-native
Annual herb 
© 2022 Donald Burk 
© 2021 Donald Burk 
© 2013 Toni Corelli |
|
Polygonum aviculare ssp. depressum Prostrate knotweed
non-native
Annual, Perennial herb 
© 2016 Barbara Boethling 
© 2021 Ron Vanderhoff 
© 2014 Richard Chasey |
|
Polygonum paronychia Beach knotweed, Dune knotweed
native
Perennial herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Polypogon interruptus Ditch beard grass, Ditch rabbitsfoot grass
non-native
Perennial grass 
© 2022 John Rawlings 
© 2022 John Rawlings 
© 2020 Ron Vanderhoff |
|
Polypogon monspeliensis Annual beard grass, Rabbitsfoot grass
• invasive non-native
Annual grass 
© 2008 Steve Matson 
© 2014 Steve Matson 
© 2008 Steve Matson |
|
Polypogon viridis Water beard grass
non-native
Perennial grass 
© 2022 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2019 Friends of Five Creeks volunteers |
|
Potentilla anserina ssp. pacifica Pacific potentilla, Silverweed
native
Perennial herb 
© 2022 R.A. Chasey 
© 2021 Charles Russell 
© 2022 R.A. Chasey |
|
Pseudognaphalium californicum Ladies' tobacco
native
Annual, Perennial herb 
© 2019 Gary McDonald 
© 2020 Steven M Norris 
© 2021 Ron Vanderhoff |
|
Pseudognaphalium luteoalbum Jersey cudweed
non-native
Annual herb 
© 2021 Ron Vanderhoff 
© 2019 Diane Etchison 
© 2015 Chris Jaster |
|
Pseudognaphalium stramineum Cottonbatting plant
native
Perennial herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2017 Gary McDonald |
|
Ranunculus californicus California buttercup
native
Perennial herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Ranunculus muricatus Buttercup, Pricklefruit buttercup, Spiny buttercup
non-native
Annual, Perennial herb 
© 2023 R.A. Chasey 
© 2023 Alaine Arslan 
© 2009 Julie A. Kierstead |
|
Raphanus sativus Cultivated radish, Jointed charlock, Wild radish
• invasive non-native
Annual, Biennial herb 
© 2017 Lisa Miller 
© 2020 Ron Vanderhoff 
© 2023 Julia Markey |
|
Rubus ursinus California blackberry, Pacific blackberry
native
Vine, Shrub 
© 2018 Ken Lunders 
© 2019 Ron Vanderhoff 
© 2015 Kelli Kallenborn |
|
Rumex acetosella Common sheep sorrel
• invasive non-native
Perennial herb 
© 2017 Gary McDonald 
© 2008 Steve Matson 
© 2019 Patrick Furtado |
|
Rumex crispus Curly dock, Curly leaved dock, Rhubarb
• invasive non-native
Perennial herb 
© 2018 Tim Lewis 
© 2019 Diane Etchison 
© 2023 Ron Vanderhoff |
|
Rumex fueginus Golden dock
native
Annual, Perennial herb 
© 2022 Steve Ashcraft 
© 2021 Donald Burk 
© 2020 Ron Vanderhoff |
|
Rumex obtusifolius Bitter dock
non-native
Perennial herb 
© 2021 Toni Corelli 
© 2021 Toni Corelli 
© null |
|
Rumex occidentalis Western dock
native
Perennial herb 
© 2008 Toni Corelli 
© 2009 Toni Corelli 
© 2020 Ken Hickman |
|
Rumex pulcher Fiddle dock
non-native
Perennial herb 
© 2020 Ryan Carle 
© 2022 Chris McDonald 
© 2021 David popp |
|
Rumex salicifolius Willow dock, Willow leaved dock
native
Perennial herb 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2023 Helen Hancock |
|
Rumex transitorius Willow dock
native
Perennial herb 
© 2009 Toni Corelli 
© 2011 Toni Corelli 
© 2008 Toni Corelli |
|
Salix lasiandra var. lasiandra Pacific willow
native
Tree 
© 2021 Alice Cummings 
© 2021 Diane Renshaw 
© 2017 Ron Vanderhoff |
|
Salix lasiolepis Arroyo willow
native
Tree, Shrub 
© 2019 Steve Matson 
© 2022 Ron Vanderhoff 
© 2020 Steve Matson |
|
Salix sitchensis Coulter willow, Sitka willow
native
Tree, Shrub 
© 2019 Ken Hickman 
© 2019 Ken Hickman 
© 2019 Marisa Persaud |
|
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 |
|
Schoenoplectus californicus California bulrush
native
Perennial grasslike herb 
© 2021 R.A. Chasey 
© 2020 Diane Etchison 
© 2021 R.A. Chasey |
|
Schoenoplectus pungens var. longispicatus Common threesquare
native
Perennial grasslike herb 
© 2022 R.A. Chasey 
© 2024 R.A. Chasey 
© 2008 Toni Corelli |
|
Scirpus microcarpus Panicled bulrush, Small fruited bulrush
native
Perennial grasslike herb 
© 2022 Doug Allshouse 
© 2008 Steve Matson 
© 2013 Ron Vanderhoff |
|
Scrophularia californica California bee plant, California figwort
native
Perennial herb 
© 2020 Bob Sweatt 
© 2006 Steve Matson 
© 2019 Cynthia Powell |
|
Senecio elegans Redpurple ragwort
non-native
Annual herb 
© 2015 Toni Corelli 
© 2012 Michael Perlmutter 
© 2009 Toni Corelli |
|
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 |
|
Sherardia arvensis Blue fieldmadder, Field madder
non-native
Annual herb 
© 2005 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Sidalcea malviflora ssp. malviflora Checker mallow, Dwarf checkerbloom
native
Perennial herb (rhizomatous) 
© 2022 Mary Conway 
© 2021 Zoya Akulova-Barlow 
© 2022 Ron Vanderhoff |
|
Silybum marianum Blessed milkthistle, Milk thistle
• invasive non-native
Annual, Perennial herb 
© 2020 Nancy Hamlett 
© 2019 Marisa Persaud 
© 2018 Angelique Herman |
|
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 douglasii Douglas' nightshade, Greenspot nightshade
native
Perennial herb 
© 2006 Steve Matson 
© 2024 Mike Russler 
© 2006 Steve Matson |
|
Solanum physalifolium var. nitidibaccatum Nightshade
non-native
Annual herb 
© 2011 Toni Corelli 
© 2011 Toni Corelli 
© 2011 Toni Corelli |
|
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 |
|
Sparganium eurycarpum var. eurycarpum Broadfruit bur reed
native
Perennial herb 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2020 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 |
|
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 |
|
Stellaria media Chickweed
non-native
Annual herb 
© 2018 Gary McDonald 
© 2018 Gary McDonald 
© 2015 Diane Etchison |
|
Symphyotrichum chilense California aster, Pacific aster
native
Perennial herb 
© 2020 Suzanne L. Weakley 
© 2013 Arcangelo Wessells 
© 2018 Stacie Wolny |
|
Tanacetum bipinnatum Dune tansy
native
Perennial herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Taraxacum officinale Common dandelion, Dandelion, Red seeded dandelion
• invasive non-native
Perennial herb 
© 2021 Ron Vanderhoff 
© 2019 Diane Etchison 
© 2021 Ron Vanderhoff |
|
Tetragonia tetragonoides New zealand spinach
non-native
Annual herb 
© 2021 Michelle Karle 
© 2021 Michelle Karle 
© 2023 Ron Vanderhoff |
|
Toxicodendron diversilobum Poison oak, Poisonoak, Western Poison Oak
native
Vine, Shrub 
© 2020 Ron Vanderhoff 
© 2019 Randy Huey 
© 2025 Mike Russler |
|
Trifolium fucatum Bull clover, Sour clover
native
Annual herb 
© 2014 Steve Matson 
© 2024 Mike Russler 
© 2025 Mike Russler |
|
Trifolium hirtum Rose clover
• invasive non-native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Tropaeolum majus Garden nasturtium, Nasturtium
• invasive non-native
Annual herb, Vine 
© 2021 Julie A. Kierstead 
© 2024 Mike Russler 
© 2020 Jennifer Mo |
|
Typha angustifolia Nail rod, Narrow leaf cattail, Narrowleaf cattail
non-native
Perennial herb (aquatic) 
© 2019 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Typha latifolia Broadleaf cattail, Common cattail, Soft flag
native
Perennial herb (aquatic) 
© 2013 Steve Matson 
© 2013 Steve Matson 
© 2013 Steve Matson |
|
Urtica dioica ssp. gracilis American stinging nettle, California nettle
native
Perennial herb 
© 2020 Lynn Overtree 
© 2007 Toni Corelli 
© 2021 Chuck Kozak |
|
Urtica urens Annual stinging nettle, Dwarf nettle
non-native
Annual herb 
© 2019 Gary McDonald 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Veronica americana American brooklime, American speedwell, Brooklime
native
Perennial herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Veronica persica Bird's eye speedwell, Birdeye speedwell
non-native
Annual herb 
© 2019 Patrick Furtado 
© 2022 Bob Sweatt 
© 2022 Ron Vanderhoff |
|
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 |
|
Vinca major Greater periwinkle, Bigleaf periwinkle
• invasive non-native
Perennial herb 
© 2020 Julia Markey 
© 2022 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Woodwardia fimbriata Chain fern, Giant chain fern, Giant chainfern
native
Fern 
© 2019 Julie Kierstead Nelson 
© 2020 R.A. Chasey 
© 2020 Julie A. Kierstead |
|
Zantedeschia aethiopica Calla lily, Callalily, Common calla
• invasive non-native
Perennial herb 
© 2020 Jennifer Mo 
© 2020 Ron Vanderhoff 
© 2021 MCOSD EDRR |
|
Zeltnera muehlenbergii Muehlenberg's centaury
native
Annual herb 
© 2019 Patrick Furtado 
© 2015 James Gonsman 
© 2011 Michael Perlmutter |
