OPTIONS
| OPTIONS |
X |
| Search for plants on this list with Observation Search or What Grows Here? |
| ||||||
|
|
||||||
| Quick access to plants commonly found in the Yolo Bypass Wildlife Area | ||||||
| 448 PLANTS |
|
Abutilon theophrasti Velvet leaf, Velvetleaf
non-native
Annual herb 
© 2022 Morgan Stickrod 
© 2023 Donald Burk 
© 2023 Donald Burk |
|
Acacia dealbata Silver wattle
• invasive non-native
Tree, Shrub 
© 2019 Gary McDonald 
© 2023 Ron Vanderhoff 
© 2024 Donald Burk |
|
Acacia melanoxylon Blackwood acacia
• invasive non-native
Tree 
© 2022 Julian Geoghegan 
© 2019 Julian Geoghegan 
© 2023 Jennifer Mo |
|
Achyrachaena mollis Blow-Wives
native
Annual herb 
© 2015 Diane Etchison 
© 2021 Cynthia Powell 
© 2022 Mike Russler |
|
Acmispon americanus American bird's foot trefoil, Spanish lotus
native
Annual herb 
© 2019 Rachelle Gray 
© 2013 Arcangelo Wessells 
© 2017 David Wolfson |
|
Acmispon americanus var. americanus American bird's foot trefoil, American trefoil, Spanish lotus
native
Annual herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Acmispon wrangelianus Wrangel lotus
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Actaea rubra baneberry, Western baneberry
native
Perennial herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2002 Gerald Carr |
|
Aegilops triuncialis Barbed goatgrass
• invasive non-native
Annual grass 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2018 Scott Oneto |
|
Aesculus californica Buckeye, California buckeye, California horse chestnut
native
Tree 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2018 Dean Kelch |
|
Agoseris heterophylla Annual agoseris, Annual mountain dandelion
native
Annual herb 
© 2003 Steve Matson 
© 2021 Lisa Berry 
© 2020 Bob Sweatt |
|
Agrostis capillaris Colonial bentgrass
non-native
Perennial grass  © 2005 Steve Matson  © 2005 Steve Matson  © 2005 Steve Matson |
|
Agrostis gigantea Creeping bentgras, Giant bentgrass, Redtop
non-native
Perennial grass 
© 2023 Dana York 
© 2023 Dana York 
© 2022 John Rawlings |
|
Agrostis idahoensis Colonial bentgrass, Idaho bentgrass
native
Perennial grass  © 2005 Steve Matson  © 2005 Steve Matson 
© 2020 John Rawlings |
|
Agrostis stolonifera Creeping bentgrass, Redtop
• invasive non-native
Perennial grass 
© 2018 Rachelle Gray 
© 2018 Rachelle Gray 
© 2018 Rachelle Gray |
|
Ailanthus altissima Ailanthus, Tree of heaven
• invasive non-native
Tree 
© 2022 Jenny Gossett 
© 2022 Jenny Gossett 
© 2020 Julie A. Kierstead |
|
Alopecurus saccatus Pacific foxtail
native
Annual grass 
© 2016 David Greenberger 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Amaranthus albus Pigweed amaranth, Tumbleweed
non-native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2018 Ron Vanderhoff |
|
Amaranthus blitoides Mat amaranth, Prostrate amaranth, Prostrate pigweed
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2023 Helen Hancock 
© 2024 Dianne Lake |
|
Amaranthus blitum Purple amaranth
non-native
Annual herb 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2024 Donald Burk |
|
Amaranthus powellii Powell's amaranth
native
Annual herb 
© 2022 Donald Burk 
© 2019 David popp  © 2015 Keir Morse |
|
Amaranthus retroflexus Green amaranth, Red root pigweed, Red rooted amaranth
non-native
Annual herb 
© 2017 Ingrid Cabada 
© 2022 Jennifer Mo 
© 2021 Ron Vanderhoff |
|
Ambrosia psilostachya Ragweed, Western ragweed
native
Perennial herb 
© 2021 Mary Ann Machi 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Ammannia robusta Grand ammania, Grand redstem
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Ammi visnaga Bisnaga, Toothpickweed
non-native
Annual, Biennial herb 
© 2016 Nicolle Herr 
© 2020 Wildscape Restoration 
© 2020 Wildscape Restoration |
|
Amsinckia douglasiana Douglas' fiddleneck
• rare native
Annual herb 
© 2023 Matt Berger 
© 2023 Matt Berger 
© 2018 Richard Spjut |
|
Amsinckia intermedia Common fiddleneck
native
Annual herb 
© 2020 Matt Berger 
© 2019 Ron Vanderhoff 
© 2021 David popp |
|
Amsinckia lycopsoides Bugloss fiddleneck, Tarweed fiddleneck
native
Annual herb 
© 2021 David popp 
© 2023 Catherine Chang 
© 2022 Catherine Chang |
|
Amsinckia menziesii Menzies' fiddleneck, Small flowered fiddleneck
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2022 Catherine Chang 
© 2022 Catherine Chang |
|
Anthemis cotula Dog fennel, Mayweed, dog fennel, Stinking chamomile
• invasive non-native
Annual herb 
© 2017 Diane Etchison 
© 2019 Nathan Taxel 
© 2019 Dave Beller |
|
Anthoxanthum odoratum Sweet vernal grass, Sweet vernalgrass
• invasive non-native
Annual, Perennial grass 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Orobanche californica California orobanche
native
Perennial herb (parasitic) 
© 2024 Neil Uelman 
© 2014 Steve Matson 
© 2024 Ron Vanderhoff |
|
Arrhenatherum elatius Tall oatgrass
non-native
Perennial grass 
© 2020 Doug Allshouse 
© 2021 John Rawlings 
© 2019 Julian Geoghegan |
|
Artemisia douglasiana California mugwort, Douglas' sagewort
native
Perennial herb 
© 2022 Ron Vanderhoff 
© 2016 Glen Schneider 
© 2021 Mike Russler |
|
Arum italicum Italian lords and ladies
non-native
Perennial herb 
© 2021 Donald Burk  © 2015 Dr. Amadej Trnkoczy 
© 2012 Toni Corelli |
|
Arundo donax Giant reed
• invasive non-native
Perennial grass 
© 2013 Miriam Sachs Martin 
© 2020 Jennifer Mo 
© 2018 Ron Vanderhoff |
|
Asclepias eriocarpa Indian milkweed, Kotolo milkweed, Woolypod milkweed
native
Perennial herb 
© 2023 Ron Vanderhoff 
© 2014 Dan Cohn 
© 2019 Ron Vanderhoff |
|
Asclepias fascicularis Narrow leaf milkweed
native
Perennial herb 
© 2010 Steve Matson 
© 2010 Steve Matson 
© 2014 Steve Matson |
|
Asclepias speciosa Showy milkweed
native
Perennial herb 
© 2024 Mary Ann Machi 
© 2009 Steve Matson 
© 2009 Steve Matson |
|
Astragalus tener var. ferrisiae Ferris' milkvetch, Ferris's milk vetch
• rare native
Annual herb  © 2019 Ian Cain  © 2019 Ian Cain  © 2019 Ian Cain |
|
Astragalus tener var. tener Alkali milk vetch, Alkali milkvetch
• rare native
Annual herb 
© 2025 Mike Russler 
© 2020 Tim Miller 
© 2019 John Rawlings |
|
Atriplex argentea var. expansa Mojave silverscale
native
Annual herb 
© 2022 Dianne Lake 
© 2022 Dianne Lake 
© 2022 Dianne Lake |
|
Atriplex cordulata var. cordulata Heartscale
• rare native
Annual herb  © 2003 George W. Hartwell  © 1994 Robert E. Preston, Ph.D.  © 2011 Jean Pawek |
|
Atriplex depressa Brittlescale
• rare native
Annual herb 
© 2011 Ramona Robison  © 2009 Zoya Akulova  © 2003 George W. Hartwell |
|
Atriplex micrantha Twoscale saltbush
non-native
Annual herb  © 2013 Trent M. Draper  © 2013 Mary Winter  © Mary Winter |
|
Atriplex prostrata Fat-hen
non-native
Annual herb 
© 2013 Michael Mitchell 
© 2023 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Atriplex rosea Redscale, Tumbling oracle, Tumbling saltweed
non-native
Annual herb 
© 2023 R.A. Chasey 
© 2023 R.A. Chasey 
© 2023 R.A. Chasey |
|
Avena barbata Slender oat, Slim oat
• invasive non-native
Annual grass 
© 2018 Julian Geoghegan 
© 2023 David popp 
© 2019 Ron Vanderhoff |
|
Avena fatua Wild oat, Wildoat
• invasive non-native
Annual grass 
© 2018 Gary McDonald 
© 2023 Ron Vanderhoff 
© 2023 Matt Berger |
|
Avena sativa Common oats, Cultivated oats, Wild oat
non-native
Annual, Perennial grass 
© 2016 Cynthia Powell 
© 2021 John Rawlings  © 2006 Louis-M. Landry |
|
Avena sterilis Animated oat, Sterile oats
• invasive non-native
Annual grass 
© 2014 Keir Morse 
© 2014 Keir Morse 
© 2014 Keir Morse |
|
Baccharis glutinosa Douglas' baccharis, Salt marsh baccharis
native
Perennial herb 
© 2020 Patrick Furtado 
© 2019 Julian Geoghegan 
© 2020 Rebecca Schoenenberger |
|
Bellis perennis English daisy, English lawn daisy
• invasive non-native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2023 Donald Burk 
© 2020 Bob Sweatt |
|
Bidens frondosa Devil's beggartick, Sticktight
native
Annual herb 
© 2020 R.A. Chasey 
© 2020 Bob Sweatt 
© 2020 R.A. Chasey |
|
Bolboschoenus maritimus ssp. paludosus Saltmarsh bulrush
native
Perennial grasslike herb 
© 2024 R.A. Chasey 
© 2024 R.A. Chasey 
© 2020 Alice Cummings |
|
Brassica nigra Black mustard
• invasive non-native
Annual herb 
© 2021 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Brassica rapa Common mustard, Field mustard, Rape mustard
• invasive non-native
Annual herb 
© 2024 David Wolfson 
© 2021 Diane Etchison 
© 2018 Angelique Herman |
|
Briza maxima Big quaking grass, Big quakinggrass, Rattlesnake grass
• invasive non-native
Annual grass 
© 2017 Gary McDonald 
© 2018 Bill Schmidt 
© 2017 Gary McDonald |
|
Briza minor Little quaking grass, Little quakinggrass, Little rattlesnake grass
non-native
Annual grass 
© 2023 R.A. Chasey 
© 2019 Gary McDonald 
© 2019 Gary McDonald |
|
Brodiaea appendiculata Appendage brodiaea, Hoover's brodiaea
native
Perennial herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2020 Jeff Bisbee |
|
Bromus arizonicus Arizona brome
native
Annual grass  © 2024 Matt C. Berger  © 2024 Matt C. Berger  © 2024 Matt C. Berger |
|
Bromus catharticus Rescue grass, Rescuegrass
non-native
Annual, Perennial grass 
© 2016 Andrew Longman 
© 2020 Ramona Robison 
© 2011 Toni Corelli |
|
Bromus diandrus Bromegrass, Ripgut brome, Ripgut grass
• invasive non-native
Annual grass 
© Alize 
© 2021 Richard Spjut 
© 2024 David popp |
|
Bromus hordeaceus Soft brome, Soft chess
• invasive non-native
Annual grass 
© 2023 Ron Vanderhoff 
© 2018 Gary McDonald 
© 2018 Gary McDonald |
|
Bromus inermis Smooth brome
non-native
Perennial grass 
© 2011 Ramona Robison 
© 2019 Manzanita Dictionary 
© 2019 Manzanita Dictionary |
|
Bromus japonicus Downy sheathed cheat, Hairy chess, Japanese brome
• invasive non-native
Annual grass  © 2005 Steve Matson  © 2005 Steve Matson  © 2005 Steve Matson |
|
Bromus racemosus Smooth brome
non-native
Annual grass  © 2011 Barry Breckling  © 2011 Barry Breckling  © 2011 Barry Breckling |
|
Bromus sterilis Poverty brome, Sterile brome
non-native
Annual grass 
© 2021 John Rawlings 
© 2023 John Rawlings 
© 2023 John Rawlings |
|
Bromus tectorum Cheatgrass, downy brome, Downy brome grass, Downy chess
• invasive non-native
Annual grass 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Caesalpinia gilliesii Bird of paradise
non-native
Tree, Shrub, Vine 
© 2014 Steve Matson 
© 2020 Ron Vanderhoff 
© 2021 Diana Wing |
|
Calandrinia menziesii red maids, Calandrinia
native
Annual herb 
© 2021 Mary Ann Machi 
© 2024 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Callitriche longipedunculata Longstock water-starwort
native
Perennial herb |
|
Callitriche marginata California water starwort, Winged water starwort
native
Annual herb (aquatic) 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Camissonia contorta Contorted sun cup, Plains evening primrose
native
Annual herb 
© 2023 Dianne Lake 
© 2022 Mike Russler 
© 2021 Helen Hancock |
|
Capsella bursa-pastoris Shepherd's purse
non-native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Cardamine hirsuta Hairy bitter cress, Hairy bittercress
non-native
Annual herb 
© 2020 Ken Lunders 
© 2022 Donald Burk 
© 2024 Jim Xerogeanes |
|
Cardamine oligosperma Bitter cress, Idaho bittercress
native
Annual, Perennial herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Carex barbarae Santa barbara sedge, Valley sedge
native
Perennial grasslike herb 
© 2024 R.A. Chasey 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Carex divulsa ssp. divulsa Gray sedge
non-native
Perennial grasslike herb 
© 2020 Peter Warner 
© 2020 Peter Warner 
© 2017 Eric Wrubel |
|
Carex inversa Knob sedge
non-native
Perennial grasslike herb |
|
Carpobrotus edulis Hottentot fig, Iceplant, Sea fig
• invasive non-native
Perennial herb 
© 2021 Michelle Karle 
© 2017 Lisa Miller 
© 2018 Michael Chasse |
|
Castilleja attenuata Narrow leaved owl's clover, Valley tassels
native
Annual herb 
© 2024 Steve Conger 
© 2024 Mary Ann Machi 
© 2019 Timothy Boomer |
|
Catalpa bignonioides Southern catalpa
non-native
Tree 
© 2015 Ron Vanderhoff 
© 2011 Ramona Robison 
© 2014 Dean Kelch |
|
Caulanthus lasiophyllus California mustard
native
Annual herb 
© 2022 Steve Matson 
© 2023 Steve Matson 
© 2010 Steve Matson |
|
Ceanothus cuneatus Buck brush, Wedgeleaf ceanothus
native
Shrub 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2021 Steve Matson |
|
Ceanothus thyrsiflorus var. griseus Carmel ceanothus
native
Shrub  © 2006 Steve Matson  © 2023 aparrot1  © 2014 Robert Sikora |
|
Centaurea solstitialis Barnaby's thistle, Yellow star thistle
• invasive non-native
Annual herb 
© 2022 Cynthia Powell 
© 2019 Arlee Montalvo 
© 2022 Mary Herr |
|
Centromadia fitchii Spikeweed
native
Annual herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Centromadia parryi Pappose tarweed
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2017 Joan Miller 
© 2020 Eric Koberle |
|
Centromadia parryi ssp. parryi Pappose tarplant
• rare native
Annual herb 
© 2009 Toni Corelli 
© 2009 Toni Corelli 
© 2009 Toni Corelli |
|
Centromadia parryi ssp. rudis Pappose tarweed
• rare native
Annual herb 
© 2024 Mike Russler 
© 2024 Mike Russler 
© 2022 Ryan O'Dell |
|
Centromadia pungens Common tarweed, Common spikeweed
native
Annual herb 
© 2014 Ron Vanderhoff 
© 2022 Steve Matson 
© 2022 Eric Koberle |
|
Cephalanthus occidentalis Common buttonbush
native
Shrub 
© 2021 Mike Russler 
© 2017 Carl Bjork 
© 2021 Mike Russler |
|
Cerastium glomeratum Large mouse ears, Mouseear chickweed, Sticky chickweed
non-native
Annual herb 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2023 R.A. Chasey |
|
Cercis occidentalis Redbud, Western redbud
native
Tree, Shrub 
© 2022 Jamie Spielmann 
© 2023 Cynthia Powell 
© 2024 Mike Russler |
|
Chenopodium album Lamb's quarters, Lambs quarters, White goosefoot
non-native
Annual herb 
© 2022 Ron Vanderhoff 
© 2014 Toni Corelli 
© 2022 Ron Vanderhoff |
|
Chenopodium glaucum Oak leaved goosefoot
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Chenopodium vulvaria Stinking goosefoot
non-native
Annual herb 
© 2022 Donald Burk 
© 2022 Donald Burk  © 2015 Zoya Akulova |
|
Chloris gayana Rhodes grass
non-native
Perennial grass  © 2005 Steve Matson  © 2005 Steve Matson  © 2005 Steve Matson |
|
Chloris truncata Australian fingergrass, Truncate finger grass
non-native
Perennial grass  © 2001 CDFA  © 2001 CDFA |
|
Cichorium intybus Chicory
non-native
Perennial herb 
© 2020 Bob Sweatt 
© 2022 David Strauch 
© 2019 Diane Etchison |
|
Claytonia perfoliata Miners lettuce, Miner's lettuce, Rooreh (Ohlone)
native
Annual herb 
© 2008 Steve Matson 
© 2019 Gary McDonald 
© 2020 Matt Berger |
|
Conium maculatum Poison hemlock
• invasive non-native
Perennial herb 
© 2024 Cynthia Powell 
© 2013 Toni Corelli 
© 2016 Cynthia Powell |
|
Convolvulus arvensis Field bindweed, Orchard morningglory
• invasive non-native
Perennial herb, Vine 
© 2022 Steve Matson 
© 2021 Ron Vanderhoff 
© 2022 Steve Matson |
|
Cortaderia selloana Uruguayan pampas grass
• invasive non-native
Perennial grass 
© 2023 Cynthia Powell 
© 2023 Randall English 
© 2022 Ron Vanderhoff |
|
Cotoneaster lacteus Milkflower cotoneaster
• invasive non-native
Shrub 
© 2019 Ron Vanderhoff 
© 2022 John Doyen 
© 2019 Ron Vanderhoff |
|
Cotoneaster pannosus Cotoneaster, Silverleaf cotoneaster, Woolly cotoneaster
• invasive non-native
Shrub 
© 2021 David Wolfson 
© 2024 Diana Wahl 
© 2024 Laguna Canyon Foundation |
|
Cotula australis Australian brass buttons, Australian cotula, Australian waterbuttons
non-native
Annual herb 
© 2023 Mike Russler 
© 2022 Ron Vanderhoff 
© 2023 Mike Russler |
|
Crassula aquatica Aquatic pygmy weed, Pigmy weed, Water pygmyweed
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2022 Catherine Chang 
© 2022 Catherine Chang |
|
Crassula connata Pigmy weed, Sand pygmy weed, Sand pygmyweed
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2022 Sameer Saroa 
© 2019 Adam Chasey |
|
Crassula tillaea Mediterranean pygmy weed, Moss pygmyweed
non-native
Annual herb 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Cressa truxillensis Alkali weed, Spreading alkaliweed
native
Perennial herb 
© 2022 John Doyen 
© 2022 John Doyen 
© 2018 Ron Vanderhoff |
|
Croton setiger Turkey-mullein
native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2014 Richard Chasey |
|
Crypsis schoenoides Swamp grass, Swamp picklegrass, Swamp pricklegrass
non-native
Annual grass 
© 2023 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Crypsis vaginiflora African prickle grass, African pricklegrass
non-native
Annual grass 
© 2018 David popp 
© 2021 John Rawlings 
© 2023 R.A. Chasey |
|
Cuscuta brachycalyx San joaquin dodder
native
Annual herb, Vine (parasitic)  © 2008 Jorg Fleige  © 2008 Keir Morse |
|
Cuscuta indecora var. indecora Big seed alfalfa dodder, Bigseed alfalfa dodder
native
Annual herb, Vine (parasitic)  © 2011 Sierra Pacific Industries  © 2011 Sierra Pacific Industries  © 2011 Sierra Pacific Industries |
|
Cuscuta japonica Japanese dodder
• invasive non-native
Annual herb, Vine (parasitic) 
© 2014 Michael Perlmutter 
© 2013 David Chang 
© 2014 Michael Perlmutter |
|
Cuscuta pentagona Five angled dodder, Fiveangled dodder, Western field dodder
native
Annual herb, Vine (parasitic)  © © 2016 Keir Morse  © 2016 Keir Morse  © 2016 Keir Morse |
|
Cynodon dactylon Bermuda grass, Bermudagrass
• invasive non-native
Perennial grass 
© 2021 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Cyperus eragrostis Tall cyperus, Tall flatsedge
native
Perennial grasslike herb 
© 2016 Joan Hampton 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff |
|
Cyperus odoratus Fragrant flatsedge
native
Annual grasslike herb 
© 2018 Ron Vanderhoff 
© 2020 Jennifer Mo 
© 2021 Ron Vanderhoff |
|
Dactylis glomerata Orchard grass, Orchardgrass
• invasive non-native
Perennial grass 
© 2003 Steve Matson 
© 2003 Steve Matson 
© 2003 Steve Matson |
|
Datisca glomerata Durango root
native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2019 Diane Etchison 
© 2019 Matt Berger |
|
Datura ferox Chinese thornapple
non-native
Annual herb 
© 2017 Ron Vanderhoff 
© 2013 Beth Wurzburg 
© 2011 Ramona Robison |
|
Datura stramonium Jimson weed, Jimsonweed
non-native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2020 Ron Vanderhoff |
|
Datura wrightii Jimsonweed, Sacred thorn apple, Toluaca
native
Perennial herb 
© 2019 Bonnie Nickel 
© 2019 Ron Vanderhoff 
© 2019 Bonnie Nickel |
|
Daucus carota Queen Anne's lace, Wild carrot
• invasive non-native
Perennial herb 
© 2023 Donald Burk 
© 2021 Charles Russell 
© 2021 Charles Russell |
|
Deschampsia danthonioides Annual hairgrass
native
Annual grass  © 2008 Keir Morse 
© 2024 Matt Berger 
© 2023 Matt Berger |
|
Dichelostemma capitatum ssp. capitatum Blue dicks, Wild hyacinth
native
Perennial herb 
© 2017 Alison Sheehey 
© Geoff Burleigh 
© 2015 Ken Lunders |
|
Digitaria ischaemum Smooth crabgrass
non-native
Annual grass  © 2006 Dean Wm. Taylor, Ph.D.  © 2006 Steve Matson  © 2006 Steve Matson |
|
Digitaria sanguinalis Hairy crabgrass
non-native
Annual grass 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2019 Jennifer Mo |
|
Dimorphotheca ecklonis Blue & white daisybush
non-native
Perennial herb 
© 2019 Dean Taylor 
© 2018 David Wolfson 
© 2020 Nathan Taxel |
|
Mimulus tricolor Tricolor monkeyflower
native
Annual herb 
© 2020 Matt Berger 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Dipsacus fullonum Fuller's teasel, Fullers' teasel, Wild teasel
• invasive non-native
Perennial herb 
© 2022 Morgan Stickrod 
© 2018 Alex Spencer 
© 2021 Amber Bedgood |
|
Dichelostemma capitatum Blue dicks
native
Perennial herb 
© 2023 Steve Matson 
© 2022 Steve Matson 
© 2019 Steve Matson |
|
Distichlis spicata Inland saltgrass, Salt grass, Saltgrass
native
Perennial grass 
© 2020 Matt Berger 
© 2019 Ron Vanderhoff 
© 2018 Emily Allen |
|
Dittrichia graveolens Stinkwort
• invasive non-native
Annual herb 
© 2017 Bob Huttar 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Downingia insignis Harlequin calicoflower, Harlequin downingia
native
Annual herb 
© 2023 Timothy Boomer 
© 2023 Bill Kress 
© 2019 Ramona Robison |
|
Downingia ornatissima var. ornatissima Folded calicoflower, Horned downingia
native
Annual herb 
© 2021 Robin Carter 
© 2025 Alaine Arslan 
© 2025 Alaine Arslan |
|
Downingia pulchella Flatface calicoflower, Flatface downingia
native
Annual herb 
© 2023 R.A. Chasey 
© 2022 Charles Russell 
© 2022 Charles Russell |
|
Echinochloa colona Jungle rice
non-native
Annual grass 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Echinochloa crus-galli Barnyard grass, Japanese millet, Watergrass
non-native
Annual grass 
© 2024 R.A. Chasey 
© 2022 R.A. Chasey 
© 2024 R.A. Chasey |
|
Echinochloa esculenta Japanese millet
non-native
Annual grass |
|
Eclipta prostrata False daisy
native
Annual herb 
© 2018 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2020 R.A. Chasey |
|
Eichhornia crassipes Common water hyacinth
• invasive non-native
Perennial herb 
© 2020 Ron Vanderhoff 
© 2018 Rachelle Gray 
© 2020 HARDEEP BAINS |
|
Eleocharis macrostachya Common spikerush, Creeping spike rush, Pale spikerush
native
Perennial grasslike herb 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2003 Steve Matson |
|
Eleocharis pachycarpa Black sand spikerush, Broad fruit spikerush
non-native
Perennial grasslike herb  © 2003 Steve Matson  © 2003 Steve Matson  © 2003 Steve Matson |
|
Eleocharis rostellata Beaked spikerush, Walking sedge
native
Perennial grasslike herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Eleusine indica Goose grass, Indian goosegrass
non-native
Annual grass 
© 2022 Jennifer Mo 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Elymus caput-medusae Medusa head
• invasive non-native
Annual grass 
© 2023 Ron Vanderhoff 
© 2019 Jennifer Mo  © 2011 Steve Matson |
|
Elymus condensatus Giant wild rye
native
Perennial grass 
© 2020 Ron Vanderhoff 
© 2024 Mel Letterman 
© 2020 Diane Etchison |
|
Elymus ponticus Tall wheat grass
non-native
Perennial grass 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff |
|
Elymus repens Quack grass
non-native
Perennial grass  © 2005 Louis-M. Landry  © 2005 Louis-M. Landry  © 2008 Keir Morse |
|
Elymus trachycaulus ssp. trachycaulus Slender wheatgrass
native
Perennial grass 
© 2024 Erin Bergman 
© 2022 John Rawlings 
© 2019 Ken Hickman |
|
Elymus triticoides Beardless wild rye
native
Perennial grass 
© 2024 Erin Bergman 
© 2021 Ron Vanderhoff 
© 2018 Rachelle Gray |
|
Epilobium brachycarpum Annual fireweed, Autumn willowweed, Panicled willow herb
native
Annual herb 
© 2023 Mary Ann Machi 
© 2019 Ramona Robison 
© 2020 Ron Vanderhoff |
|
Epilobium campestre Smooth boisduvalia
native
Annual herb 
© 2007 Steve Matson 
© 2007 Steve Matson 
© 2007 Steve Matson |
|
Epilobium ciliatum Fringed willowherb, Northern willow herb, Slender willow herb
native
Perennial herb 
© 2021 stephen rosenthal 
© 2019 Patrick Furtado 
© 2019 Gary McDonald |
|
Epilobium cleistogamum Cleistogamous boisduvalia, Selfing willowherb
native
Annual herb  © 2007 Neal Kramer  © 2015 Neal Kramer  © 2004 Carol W. Witham |
|
Equisetum hyemale ssp. affine Giant scouring rush
native
Fern 
© 2013 Michael Mitchell 
© 2024 Ron Vanderhoff 
© 2024 Robert Steers |
|
Eragrostis cilianensis Stinkgrass
non-native
Annual grass 
© 2021 Donald Burk 
© 2024 Donald Burk 
© 2021 Donald Burk |
|
Eragrostis curvula Weeping lovegrass
non-native
Perennial grass 
© 2020 Donald Burk 
© 2020 Donald Burk 
© 2020 Donald Burk |
|
Eragrostis hypnoides Teal lovegrass
native
Annual grass 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey 
© 2021 R.A. Chasey |
|
Eragrostis mexicana ssp. virescens Mexican lovegrass, Orcutt's eragrostis
native
Annual grass 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Eragrostis minor Little lovegrass
non-native
Annual grass 
© 2023 Donald Burk 
© 2023 Donald Burk 
© 2023 Donald Burk |
|
Eragrostis pectinacea Tufted lovegrass
native
Annual grass 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff |
|
Eragrostis pectinacea var. pectinacea Tufted lovegrass
native
Annual grass  © 2007 Steve Matson  © 2007 Steve Matson  © 2007 Steve Matson |
|
Eragrostis pilosa Indian lovegrass
non-native
Annual grass 
© 2023 Donald Burk 
© 2023 Donald Burk 
© 2023 Donald Burk |
|
Erigeron sumatrensis Tropical horseweed
non-native
Annual herb 
© 2021 Doug Allshouse 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Eriochloa acuminata var. acuminata Taper tipped cupgrass, Tapertip cupgrass
native
Annual grass 
© 2020 Debra Valov 
© 2020 Debra Valov 
© 2023 Donald Burk |
|
Erodium botrys Big heron bill, Broad leaf filaree, Long beaked filaree
non-native
Annual herb 
© 2006 Steve Matson 
© 2006 Steve Matson 
© 2006 Steve Matson |
|
Erodium cicutarium Coastal heron's bill, Red stemmed filaree, Redstem stork's bill
• invasive non-native
Annual herb 
© 2022 Steve Matson 
© 2008 Steve Matson 
© 2022 Steve Matson |
|
Erodium moschatum Musky stork's bill, White stemmed filaree, Whitestem filaree
• invasive non-native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Eryngium aristulatum California eryngo, Jepson's button celery
native
Perennial herb 
© 2012 Keir Morse 
© 2012 Keir Morse 
© 2022 R.A. Chasey |
|
Eryngium castrense Great valley button celery, Great valley eryngo
native
Perennial herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2023 Robin Carter-Ervin |
|
Mimulus latidens Broad toothed monkeyflower
native
Annual herb 
© 2019 David Greenberger 
© 2017 Amelia Ryan 
© 2023 Ryan O'Dell |
|
Eschscholzia californica California poppy
native
Annual, Perennial herb 
© 2019 Dee Shea Himes 
© 2021 Ron Vanderhoff 
© 2019 Amy Rapport |
|
Eucalyptus camaldulensis Red gum, Red river gum, River redgum
• invasive non-native
Tree 
© 2024 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Eucalyptus globulus Blue gum, Tasmanian bluegum
• invasive non-native
Tree 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Euphorbia maculata Spotted spurge
non-native
Annual herb 
© 2019 B.J. Dion 
© 2019 B.J. Dion 
© 2022 Ron Vanderhoff |
|
Euphorbia peplus Petty spurge
non-native
Annual herb 
© 2006 Steve Matson 
© 2022 Alice Cummings 
© 2018 MCOSD EDRR |
|
Euthamia occidentalis Western flat topped goldenrod, Western goldenrod, Western goldentop
native
Perennial herb 
© 2021 Steve Matson 
© 2018 Ron Vanderhoff 
© 2021 R.A. Chasey |
|
Extriplex joaquinana San Joaquin spearscale
• rare native
Annual herb  © sheriff_woody_pct 
© 2017 Marco Siragusa 
© 2021 Cynthia Powell |
|
Festuca bromoides Brome fescue
non-native
Annual grass 
© 2022 Diana Wahl 
© 2021 Toni Corelli 
© 2021 David popp |
|
Festuca myuros Rattail sixweeks grass
• invasive non-native
Annual grass 
© 2021 Aaron Echols 
© 2021 Ron Vanderhoff 
© 2022 John Rawlings |
|
Festuca perennis Italian rye grass
• invasive non-native
Annual, Perennial grass 
© 2019 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Festuca temulenta Darnel, tares
non-native
Annual grass 
© 2016 Spade Natural Resources Consulting 
© 2020 David popp 
© 2019 Stephany Dery |
|
Ficus carica Common fig, Edible fig
• invasive non-native
Tree 
© 2019 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2018 Vicki Salazar |
|
Foeniculum vulgare Biscuit root, Sweet fennel
• invasive non-native
Perennial herb 
© 2019 Ron Vanderhoff 
© 2023 Fred Roberts 
© 2022 Ryan O'Dell |
|
Frankenia salina Alkali heath, Alkali seaheath, Yerba reuma, alkali heath
native
Perennial herb 
© 2019 Patrick Furtado 
© 2021 Cynthia Powell 
© 2020 Ron Vanderhoff |
|
Fraxinus latifolia Oregon ash
native
Tree 
© 2021 Robert Whitaker 
© 2021 Richard Spjut 
© 2012 Terrence Gosliner |
|
Galium aparine Cleavers, Common bedstraw, Goose grass
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2023 Julia Markey 
© 2020 Ron Vanderhoff |
|
Gastridium phleoides Nit grass
non-native
Annual grass 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2017 Gary McDonald |
|
Geranium dissectum Cranesbill, Cut leaved geranium, Cutleaf geranium
• invasive non-native
Annual herb 
© 2021 Al Keuter 
© 2024 Mike Russler 
© 2014 Bryan Derr |
|
Gilia capitata ssp. staminea Bluehead gilia, Globe gilia
native
Annual herb 
© 2023 Charles Smith 
© 2021 R.A. Chasey 
© 2017 Julie Watson |
|
Glycyrrhiza glabra Cultivated licorice
non-native
Perennial herb  © 2017 Zoya Akulova  © 2018 Ron Vanderhoff 
© 2016 Ron Vanderhoff |
|
Glycyrrhiza lepidota American licorice, Lichorice, Wild licorice
native
Perennial herb 
© 2010 Steve Matson 
© 2010 Steve Matson 
© 2010 Steve Matson |
|
Grindelia camporum Common gumplant, Great valley gumweed, Gum plant
native
Perennial herb 
© 2023 R.A. Chasey 
© 2019 Ron Vanderhoff 
© 2016 Hayley Ross |
|
Hainardia cylindrica Barbgrass, Monerma, Thin tail
non-native
Annual grass 
© 2022 Denise Defreese  © 2009 Neal Kramer 
© 2024 R.A. Chasey |
|
Halimodendron halodendron Common salttree, Russian salt tree
• invasive non-native
Shrub  © 2001 CDFA  © 2001 CDFA  © 2001 CDFA |
|
Helianthus annuus Common sunflower, Hairy leaved sunflower, Sunflower
native
Annual herb 
© 2021 Mike Russler 
© 2019 Bob Case 
© 2024 Mel Letterman |
|
Heliotropium europaeum European heliotrope
non-native
Annual herb 
© 2021 Tracy J Wyckoff 
© 2022 Ramona Robison 
© 2021 David popp |
|
Helminthotheca echioides Bristly ox-tongue
• invasive non-native
Annual, Perennial herb 
© 2016 Hayley Ross 
© 2019 Rachelle Gray 
© 2012 Elizabeth Brusati |
|
Hemizonia congesta ssp. luzulifolia Hayfield tarweed, Woodrush tarweed
native
Annual herb 
© 2013 Arcangelo Wessells 
© 2022 R.A. Chasey 
© 2022 R.A. Chasey |
|
Heteromeles arbutifolia Christmas berry, Toyon
native
Shrub 
© 2015 James Gonsman 
© 2017 Gary McDonald 
© 2022 John Doyen |
|
Hibiscus lasiocarpos var. occidentalis Woolly rose-mallow
• rare native
Perennial herb 
© 2024 Charles Russell 
© 2022 Morgan Stickrod 
© 2024 R.A. Chasey |
|
Hibiscus trionum Flower of an hour
non-native
Annual herb 
© 2015 Charles Russell  © 2004 Dr. Amadej Trnkoczy  © 2004 Dr. Amadej Trnkoczy |
|
Hirschfeldia incana Mediterranean hoary mustard, Short podded mustard, Summer mustard
• invasive non-native
Perennial herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2022 Ron Vanderhoff |
|
Holcus lanatus Common velvetgrass, Velvet grass, Velvetgrass
• invasive non-native
Perennial grass 
© 2019 Bill Haley 
© 2024 David popp 
© 2019 Bill Haley |
|
Hordeum brachyantherum Meadow barley
native
Perennial grass 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Hordeum brachyantherum ssp. brachyantherum Meadow barley
native
Perennial grass
© 2015 Steve Matson 
© 2015 Steve Matson
© 2015 Steve Matson |
|
Hordeum brachyantherum ssp. californicum California barley, California meadow barley
native
Perennial grass 
© 2021 Cynthia Powell 
© 2021 John Rawlings 
© 2021 John Rawlings |
|
Hordeum depressum Alkali barley, Dwarf barley, Low barley
native
Annual grass 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2024 Denise Defreese |
|
Hordeum jubatum Fox tail barley, Foxtail barley, Squirreltail barley
native
Perennial grass 
© 2019 Rachelle Gray 
© 2024 Julie A. Kierstead 
© 2024 Julie A. Kierstead |
|
Hordeum marinum ssp. gussoneanum Barley, Mediterranean barley
non-native
Annual grass 
© 2018 Carolyn 
© 2020 Paul Aigner 
© 2017 Toni Corelli |
|
Hordeum murinum Farmer's foxtail, Foxtail barley, Mouse barley
• invasive non-native
Annual grass 
© 2018 Gary McDonald 
© 2021 Ron Vanderhoff 
© 2017 Gary McDonald |
|
Hordeum murinum ssp. glaucum Blue foxtail, Smooth barley
non-native
Annual grass
© 2018 Gary McDonald 
© 2019 Gary McDonald 
© 2017 Gary McDonald |
|
Hordeum murinum ssp. leporinum Farmer's foxtail, Foxtail barley, Hare barley
non-native
Annual grass 
© 2022 Ron Vanderhoff 
© 2021 Al Keuter
© 2021 Ron Vanderhoff |
|
Hypericum perforatum Common st. johnswort, Klamath weed, Klamathweed
• invasive non-native
Perennial herb 
© 2020 Bob Sweatt 
© 2018 stephen rosenthal 
© 2020 Bob Sweatt |
|
Hypochaeris glabra Smooth cat's ear
• invasive non-native
Annual herb 
© 2020 Ron Vanderhoff 
© 2017 Gary McDonald 
© 2019 Ron Vanderhoff |
|
Ipomoea indica Oceanblue morning glory
• invasive non-native
Perennial herb  © Natalie Servindelamora 
© 2023 Ron Vanderhoff 
© 2020 Ellen Stearns |
|
Iva axillaris Povertyweed
native
Perennial herb 
© 2019 David Greenberger 
© 2023 R.A. Chasey 
© 2020 Sara Timby |
|
Juglans hindsii Northern california black walnut
• rare native
Tree 
© 2018 Ron Vanderhoff 
© 2016 Steve Matson 
© 2018 Ron Vanderhoff |
|
Juglans regia English walnut
non-native
Tree 
© 2018 Ron Vanderhoff 
© 2019 Janice Kuch 
© 2014 Richard Chasey |
|
Juncus balticus Baltic rush, Wire rush
native
Perennial grasslike herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2019 Bonnie Nickel |
|
Juncus bufonius Common toad rush, Toad rush
native
Annual grasslike herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Juncus effusus Bog rush, Common bog rush, Common rush
native
Perennial grasslike herb 
© 2019 Patrick Furtado 
© 2019 Patrick Furtado 
© 2021 R.A. Chasey |
|
Kickxia elatine Sharp leaved fluellin, Sharp point fluellin, Sharpleaf cancerwort
non-native
Perennial herb 
© 2023 John Malpas 
© 2018 Ron Vanderhoff 
© 2016 Barbara Boethling |
|
Kickxia spuria Fluellin, Roundleaf cancerwort
non-native
Perennial herb 
© 2020 David Wolfson 
© 2020 Vivian Neou 
© 2023 R.A. Chasey |
|
Kochia scoparia Common red sage, Mexican fireweed, Summer cypress
• invasive non-native
Annual herb 
© 2013 Daniel Lubin 
© 2023 R.A. Chasey 
© 2013 Daniel Lubin |
|
Lactuca saligna Narrow leaved wild lettuce, Willow lettuce, Willowleaf lettuce
non-native
Annual herb 
© 2021 Don Hollander 
© 2019 Stacie Wolny 
© 2021 Don Hollander |
|
Lactuca serriola Prickly lettuce, Prickly wild lettuce
• invasive non-native
Annual herb 
© 2017 Gary McDonald 
© 2017 Gary McDonald 
© 2017 Gary McDonald |
|
Lagurus ovatus Hare's tail grass, Harestail grass
non-native
Annual grass 
© 2022 R.A. Chasey 
© 2024 Kyle Suchy 
© 2024 Kyle Suchy |
|
Lasthenia fremontii Fremont's goldfields, Vernal pool goldfields
native
Annual, Perennial herb 
© 2024 Cynthia Powell 
© 2022 Steve Matson 
© 2022 Steve Matson |
|
Lathyrus jepsonii var. californicus California tule pea
native
Perennial herb 
© 2024 Ryan O'Dell 
© 2020 R.A. Chasey 
© 2020 R.A. Chasey |
|
Layia chrysanthemoides Smooth tidy tips, Smooth tidytips
native
Annual herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Leersia oryzoides Rice cutgrass
native
Perennial grass 
© 2019 Jennifer Mo 
© 2023 Emily R. Allen 
© 2017 jerry fitch |
|
Lemna minuta Least duckweed
native
Perennial herb 
© 2022 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Lepidium chalepense Lens-podded hoary cress
• invasive non-native
Annual, Perennial herb 
© 2021 Donald Burk 
© 2021 Donald Burk 
© 2021 Ramona Robison |
|
Lepidium dictyotum Alkali pepperweed, Net pepper grass
native
Annual herb 
© 2023 Catherine Chang 
© 2023 Catherine Chang 
© 2022 Dianne Lake |
|
Lepidium didymum Lesser swine cress
non-native
Annual herb 
© 2022 Shawna Martinez 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Lepidium draba Whitetop
• invasive non-native
Perennial herb 
© 2020 Ron Vanderhoff 
© 2021 Mike Russler 
© 2020 Ron Vanderhoff |
|
Lepidium latifolium Broad leaved pepper grass, Broadleaved pepperweed, Perennial pepperweed
• invasive non-native
Perennial herb 
© 2022 Donald Burk 
© 2020 Ron Vanderhoff 
© 2020 Joel A. Germond, Psy.D. |
|
Lepidium latipes Dwarf pepper grass, Dwarf peppergrass, San diego pepperweed
native
Annual herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Lepidium latipes var. heckardii Heckard's pepper grass, Heckard's pepperweed
• rare native
Annual herb 
© 2009 Vernon Smith  © Justin Chapelle 
© 2023 Justin Chappelle |
|
Lepidium nitidum Peppergrass, Shining pepper grass, Shining pepperweed
native
Annual herb 
© 2021 Steve Matson 
© 2016 Steve Matson  © 2025 Jason Flores |
|
Lepidium oblongum Veiny pepper grass, Veiny pepperweed, Wayside peppergrass
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Lepidium strictum Peppergrass, Prostrate pepper grass, Upright pepperweed
native
Annual herb 
© 2022 Ron Vanderhoff 
© 2022 Jim Xerogeanes 
© 2022 Ron Vanderhoff |
|
Leptochloa fusca ssp. fascicularis Bearded sprangletop
native
Annual grass 
© 2023 Donald Burk 
© 2021 R.A. Chasey 
© 2021 Ken Hickman |
|
Leptochloa fusca ssp. uninervia Mexican sprangletop
native
Annual grass 
© 2009 Ron Vanderhoff 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff |
|
Ligustrum lucidum Glossy privet
• invasive non-native
Tree, Shrub 
© 2021 Alex Nikolaou 
© 2021 Ron Vanderhoff 
© 2017 Ron Vanderhoff |
|
Ligustrum ovalifolium California privet
non-native
Tree, Shrub 
© 2018 Abbot Chambers 
© 2020 Diana Wahl 
© 2013 Ramona Robison |
|
Ligustrum sinense Chinese privet
non-native
Tree, Shrub 
© 2020 Julie A. Kierstead 
© 2021 R.A. Chasey 
© 2020 Jeff Davis |
|
Limnanthes douglasii ssp. rosea Rosy douglas' meadowfoam
native
Annual herb 
© 2020 David popp 
© 2020 Matt Berger 
© 2021 Alaine Arslan |
|
Lonicera japonica Japanese honeysuckle
non-native
Vine, Shrub 
© 2018 michelle peruzzi 
© 2022 Andy Ford 
© 2021 Ron Vanderhoff |
|
Ludwigia hexapetala Ludwigia, Six petal water primrose
• invasive non-native
Perennial herb 
© 2009 Keith Gagomiros 
© 2021 Charles Russell 
© 2019 Ron Vanderhoff |
|
Ludwigia peploides Floating primrose willow, Floating water primrose, Marsh purslane
• invasive non-native
Perennial herb 
© 2022 David Strauch 
© 2019 Lenihan Mazur 
© 2021 Ron Vanderhoff |
|
Ludwigia peploides ssp. montevidensis Floating primrose willow, Floating water primrose
• invasive non-native
Perennial herb 
© 2021 Mike Russler 
© 2021 Mike Russler 
© 2021 Mike Russler |
|
Ludwigia peploides ssp. peploides Floating primrose willow, Floating water primrose, Marsh purslane
native
Perennial herb 
© 2022 Donald Burk 
© 2022 Donald Burk 
© 2023 R.A. Chasey |
|
Lupinus bicolor Annual lupine, Bicolored lupine, Miniature lupine
native
Annual, Perennial herb 
© 2024 Mary Ann Machi 
© 2022 Mike Russler 
© 2024 Mary Ann Machi |
|
Lupinus succulentus Arroyo lupine, Hollowleaf annual lupine, Succulent lupine
native
Annual herb 
© 2023 Andy Ford 
© 2018 Stacie Wolny 
© 2018 Stacie Wolny |
|
Lycium barbarum Matrimony vine
non-native
Shrub 
© 2020 William “Cody” Bryant  © 2011 Mary Winter  © 2015 Jean Pawek |
|
Lycopus americanus American water horehound, Bugleweed
native
Perennial herb 
© 2021 Donald Burk 
© 2021 Sara Sweet 
© 2021 Sara Sweet |
|
Lysimachia arvensis Scarlet pimpernel
non-native
Annual herb 
© 2017 B.J. Dion 
© 2018 Stacie Wolny 
© 2017 B.J. Dion |
|
Lythrum californicum California loosestrife, Common loosestrife
native
Perennial herb 
© 2017 Fred Melgert / Carla Hoegen 
© 2024 Ken-ichi Ueda 
© 2023 Ryan O'Dell |
|
Lythrum hyssopifolia Hyssop loosestrife
• invasive non-native
Annual, Perennial herb 
© 2019 Diane Etchison 
© 2021 Cynthia Powell 
© 2020 Ron Vanderhoff |
|
Malva nicaeensis Bull mallow
non-native
Annual herb 
© 2023 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Malva parviflora Cheeseweed mallow
non-native
Annual herb 
© 2022 Mike Russler 
© 2022 Donald Burk 
© 2022 Mike Russler |
|
Malvella leprosa Alkali mallow
native
Perennial herb 
© 2019 Bonnie Nickel 
© 2019 Bonnie Nickel 
© 2024 Mike Russler |
|
Marah fabacea California man-root
native
Perennial herb, Vine 
© 2018 Gary McDonald 
© 2018 MCOSD EDRR 
© 2021 Cyril Guyot |
|
Marrubium vulgare White horehound
• invasive non-native
Perennial herb 
© ©2013 Gary McDonald 
© 2015 Diane Etchison 
© 2018 Nancy Hamlett |
|
Matricaria discoidea Pineapple weed
native
Annual herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2018 Stacie Wolny |
|
Medicago orbicularis Blackdisk medick, Buttonclover, Round leafed medick
non-native
Annual herb  © 2007 Luigi Rignanese 
© 2024 David popp  © 2007 Luigi Rignanese |
|
Medicago polymorpha Bur clover, Bur medic, California burclover
• invasive non-native
Annual herb 
© 2019 Gary McDonald 
© 2019 Gary McDonald 
© 2019 Gary McDonald |
|
Melica californica California melicgrass
native
Perennial grass 
© 2023 John Rawlings 
© 2021 John Rawlings 
© 2022 John Rawlings |
|
Melilotus albus White sweetclover
• invasive non-native
Annual, Biennial herb 
© 2021 Ron Vanderhoff 
© 2020 Bob Sweatt 
© 2022 Ron Vanderhoff |
|
Melilotus indicus Annual yellow sweetclover, Sourclover
non-native
Annual herb 
© 2019 Randy Huey 
© 2019 Randy Huey 
© 2017 Rosalie Benitez |
|
Mentha arvensis American wild mint, Field mint, Marsh mint
native
Perennial herb 
© 2003 Steve Matson 
© 2003 Steve Matson 
© 2014 Steve Matson |
|
Microseris douglasii ssp. douglasii Douglas' microseris, Douglas' silverpuffs
native
Annual herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Microseris elegans Elegant silverpuffs
native
Annual herb  © 2011 Zoya Akulova 
© 2024 Dianne Lake 
© 2024 Dianne Lake |
|
Montia fontana Annual water minerslettuce, Water chickweed, Water montia
native
Annual herb 
© 2006 Steve Matson 
© 2021 Steve Matson 
© 2006 Steve Matson |
|
Muehlenbeckia complexa Mattress vine
non-native
Vine 
© 2021 Jennifer Mo 
© 2024 Maria Alvarez  © 2009 Neal Kramer |
|
Myosurus minimus Common mouse tail, Little mouse tail, Tiny mousetail
native
Annual herb 
© 2022 Dianne Lake 
© 2024 Cynthia Powell 
© 2024 Kevin Dixon |
|
Myosurus sessilis Tiny mouse tail, Vernal pool mousetail
native
Annual herb 
© 2015 Julia King 
© 2024 Denise Defreese  © 2003 George W. Hartwell |
|
Navarretia cotulifolia Broad leaved navarretia, Cotulaleaf pincushionplant
• rare native
Annual herb 
© 2022 Hannah Aclufi 
© 2023 R.A. Chasey 
© 2023 R.A. Chasey |
|
Navarretia leucocephala White headed navarretia, Whitehead navarretia
native
Annual herb 
© 2024 Cynthia Powell 
© 2019 Steve Matson 
© 2022 Steve Matson |
|
Nemophila menziesii var. menziesii Baby blue eyes
native
Annual herb 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2005 Steve Matson |
|
Neostapfia colusana Colusa grass, Colusagrass
• rare native
Annual grass 
© 2023 Charles Russell  © 2012 Aaron E. Sims 
© 2024 Anton Bokisch |
|
Nicotiana acuminata var. multiflora Many flowered tobacco, Manyflower tobacco, Tobacco
non-native
Annual herb 
© 2023 Mike Russler 
© 2019 Michelle Karle 
© 2023 R.A. Chasey |
|
Nicotiana glauca Tree tobacco
• invasive non-native
Tree, Shrub 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Orobanche aegyptiaca Egyptian broomrape
• invasive non-native
Perennial herb (parasitic) |
|
Panicum capillare Old witch grass, Witchgrass, Witch grass
native
Annual grass 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2024 R.A. Chasey |
|
Panicum dichotomiflorum Fall panicgrass, Smooth witchgrass
non-native
Annual grass  © 2005 Adonis (Don) Tate  © 2011 Steve Matson  © 2005 Adonis (Don) Tate |
|
Panicum hillmanii Hillman's panicgrass
non-native
Annual grass |
|
Panicum miliaceum ssp. miliaceum Broomcorn millet
non-native
Annual grass  © © 2015 Nicholas Stevenson NPS  © 2015 Nicholas Stevenson NPS |
|
Panicum virgatum Switchgrass
non-native
Perennial grass  © 2010 Louis-M. Landry  © 2010 Louis-M. Landry |
|
Paspalum dilatatum Dallis grass, Dallisgrass
non-native
Perennial grass 
© 2024 David popp 
© 2024 David popp 
© 2021 Ron Vanderhoff |
|
Paspalum distichum Knot grass, Knotgrass
native
Perennial grass 
© 2011 Steve Matson 
© 2017 Ron Vanderhoff 
© 2024 R.A. Chasey |
|
Persicaria amphibia Water smartweed
native
Perennial herb (aquatic) 
© 2017 Ron Vanderhoff 
© 2017 Ron Vanderhoff 
© 2019 Diane Etchison |
|
Persicaria lapathifolia Common knotweed
native
Annual herb 
© 2020 Ron Vanderhoff 
© 2017 Ron Vanderhoff 
© 2020 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 |
|
Phalaris arundinacea Reed canarygrass
native
Perennial grass 
© 2024 John Rawlings 
© 2020 Donald Burk 
© 2022 Dianne Lake |
|
Phalaris brachystachys Short spike canarygrass, Shortspike canarygrass
non-native
Annual grass 
© 2023 John Rawlings 
© 2023 John Rawlings  © 2007 Luigi Rignanese |
|
Phalaris canariensis Annual canarygrass
non-native
Annual grass  © 2008 Louis-M. Landry  © 2007 Luigi Rignanese  © 2007 Luigi Rignanese |
|
Phalaris elongata Kolea grass
• invasive non-native
Perennial grass 
© 2018 Steven Cognac 
© 2018 Sarah Inman 
© 2018 Steven Cognac |
|
Phalaris lemmonii Lemmon's canarygrass
native
Annual grass 
© 2017 James Bailey 
© 2022 Donald Burk 
© 2022 Steve Matson |
|
Phalaris minor Little seed canarygrass, Littleseed canarygrass, Mediterranean canarygrass
non-native
Annual grass 
© 2024 John Rawlings 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Phalaris paradoxa Hood canarygrass
non-native
Annual grass 
© 2024 Jennifer Mo 
© 2021 John Rawlings 
© 2017 James Bailey |
|
Photinia serratifolia Taiwanese photinia
non-native
Shrub, Tree 
© 2015 Kate Symonds 
© 2020 Elliot Gunnison 
© 2024 David popp |
|
Phyla nodiflora Common lippia, Lippia, Turkey tangle frogfruit
native
Perennial herb 
© 2018 Ron Vanderhoff 
© 2009 Ron Vanderhoff 
© 2022 Donald Burk |
|
Physalis angulata Cutleaf groundcherry
native
Annual herb  © 2015 Barry Breckling  © 2008 John Dittes 
© 2021 David popp |
|
Pilularia americana American pillwort
native
Fern 
© 2017 Ron Vanderhoff 
© 2017 Ron Vanderhoff 
© 2022 Matt Berger |
|
Pistacia chinensis Chinese pistache, Chinese pistachio
• invasive non-native
Tree 
© 2018 Thomas Reyes 
© 2020 Ron Vanderhoff 
© 2023 David popp |
|
Plagiobothrys canescens Grey popcorn flower, Valley popcorn flower, Valley popcornflower
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Plagiobothrys humistratus Dwarf allocarya, Dwarf popcornflower
native
Annual herb 
© 2021 Charles Russell 
© 2024 David Gowen 
© 2024 Ellen Uhler |
|
Plagiobothrys leptocladus Alkali plagiobothrys, Finebranched popcornflower
native
Annual herb 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff |
|
Plagiobothrys stipitatus Stalked popcornflower, Vernal pool allocarya
native
Annual herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2017 Steve Matson |
|
Plagiobothrys stipitatus var. micranthus Common vernal pool allocarya, Stalked popcornflower
native
Annual herb 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Plagiobothrys stipitatus var. stipitatus Stalked popcornflower, Vernal pool allocarya
native
Annual herb 
© 2021 Paul Watts 
© 2021 Paul Watts 
© null |
|
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 elongata Annual coast plantago, Coastal plantain, Long leaf plantain
native
Annual herb 
© 2017 Barbara Boethling 
© 2019 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Plantago lanceolata English plantain, Narrow leaved plantain, Ribgrass
• invasive non-native
Perennial herb 
© 2008 Steve Matson 
© 2019 Joe Engelbrecht 
© 2021 Ken Lunders |
|
Pleuropogon californicus Annual semaphoregrass, Semaphore grass
native
Perennial grass (rhizomatous) 
© 2018 Hayley Ross 
© 2018 Hayley Ross 
© 2018 Hayley Ross |
|
Poa bulbosa Bulbous blue grass, Bulbous bluegrass
non-native
Perennial grass 
© 2020 Julie A. Kierstead 
© 2019 Stephany Dery 
© 2020 Thomas Reyes |
|
Poa pratensis Kentucky blue grass, Kentucky bluegrass
• invasive non-native
Perennial grass 
© 2024 Erin Bergman 
© 2024 Emily R. Allen 
© 2024 Emily R. Allen |
|
Pogogyne zizyphoroides Sacramento mesamint, Sacramento mint, Sacramento pogogyne
native
Annual herb 
© 2022 Steve Matson 
© 2022 Steve Matson 
© 2022 Charles Russell |
|
Polygonum aviculare ssp. depressum Prostrate knotweed
non-native
Annual, Perennial herb 
© 2016 Barbara Boethling 
© 2021 Ron Vanderhoff 
© 2014 Richard Chasey |
|
Polypogon interruptus Ditch beard grass, Ditch rabbitsfoot grass
non-native
Perennial grass 
© 2022 John Rawlings 
© 2022 John Rawlings 
© 2020 Ron Vanderhoff |
|
Polypogon maritimus Mediterranean beard grass, Mediterranean rabbitsfoot grass
non-native
Annual grass 
© 2022 David popp 
© 2020 Diana Wahl 
© 2024 David popp |
|
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 |
|
Populus fremontii Fremont cottonwood
native
Tree 
© 2018 Julie Kierstead Nelson 
© 2020 Julie A. Kierstead 
© 2019 Hailey Laskey |
|
Populus nigra Lombardy poplar
non-native
Tree 
© 2019 Ron Vanderhoff  © © 2016 Zoya Akulova 
© 2013 Cynthia Powell |
|
Pseudognaphalium luteoalbum Jersey cudweed
non-native
Annual herb 
© 2021 Ron Vanderhoff 
© 2019 Diane Etchison 
© 2015 Chris Jaster |
|
Psilocarphus brevissimus Short woollyheads, Woolly marbles
native
Annual herb 
© 2018 David Greenberger 
© 2020 R.A. Chasey 
© 2022 Bob Sweatt |
|
Psilocarphus brevissimus var. brevissimus Short woollyheads, Woolly heads, Woolly marbles
native
Annual herb
© 2020 R.A. Chasey 
© 2021 David popp 
© 2020 Ron Vanderhoff |
|
Psilocarphus oregonus Oregon woolly marbles, Oregon woollyheads, Woolly marbles
native
Annual herb 
© 2017 David Greenberger 
© 2022 Dianne Lake 
© 2022 Donald Burk |
|
Psilocarphus tenellus Slender woolly marbles, Slender woollyheads
native
Annual herb 
© 2006 Steve Matson 
© 2006 Steve Matson 
© 2018 Ron Vanderhoff |
|
Puccinellia simplex California alkaligrass
• rare native
Annual grass 
© 2019 John Rawlings 
© 2019 John Rawlings 
© 2022 Denise Defreese |
|
Pyracantha koidzumii Taiwan firethorn
non-native
Shrub 
© 2018 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Pyrus calleryana Callery pear
• invasive non-native
Tree 
© 2021 Randy Huey 
© 2022 Donald Burk 
© 2017 Marabeth Grahame |
|
Quercus berberidifolia Inland scrub oak
native
Tree 
© 2022 David Strauch 
© 2024 Mike Russler 
© 2022 David Strauch |
|
Quercus chrysolepis Canyon live oak, Canyon oak, maul oak, goldcup oak, Gold cup oak
native
Tree 
© 2017 Aaron Sunshine 
© 2020 R.A. Chasey 
© 2018 joaquin hale |
|
Quercus dumosa Coastal sage scrub oak, Nuttall's scrub oak
• rare native
Shrub 
© 2023 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2012 Ron Vanderhoff |
|
Quercus ilex Holly oak
non-native
Tree 
© 2022 Jennifer Mo 
© 2013 Ron Vanderhoff 
© 2020 Ron Vanderhoff |
|
Quercus lobata California white oak, Valley oak
native
Tree 
© 2023 Helen Hancock 
© 2021 Cynthia Powell 
© 2023 Ron Vanderhoff |
|
Quercus macrocarpa Bur oak
non-native
Tree, Shrub 
© 2012 Ramona Robison  © 2010 Barry Breckling  © 2008 Louis-M. Landry |
|
Quercus suber Cork oak
non-native
Tree, Shrub 
© 2024 Diana Wahl 
© 2013 Ramona Robison 
© 2019 Julian Geoghegan |
|
Quercus wislizeni Interior live oak, chapparal oak
native
Tree, Shrub 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2025 Mike Russler |
|
Quercus Xmacdonaldii Macdonald oak, Macdonald's oak
native
Tree  © 2015 Keir Morse  © 2015 Keir Morse  © 2015 Keir Morse |
|
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 |
|
Acroptilon repens Russian knapweed
non-native
Perennial herb 
© 2017 Barbara Boethling 
© 2014 Steve Matson 
© 2017 Barbara Boethling |
|
Robinia pseudoacacia Black locust
• invasive non-native
Tree 
© 2021 Ron Vanderhoff 
© 2021 David Wolfson 
© 2015 Ron Vanderhoff |
|
Rosa californica California wild rose, California wildrose
native
Shrub 
© 2022 Suzanne L. Weakley 
© 2022 Suzanne L. Weakley 
© 2021 Sue Graue |
|
Rubus armeniacus Himalayan blackberry, black berry, Armenian blackberry
• invasive non-native
Shrub 
© 2014 James Gonsman 
© 2018 Richard Spjut 
© 2013 Michael Mitchell |
|
Rubus ursinus California blackberry, Pacific blackberry
native
Vine, Shrub 
© 2018 Ken Lunders 
© 2019 Ron Vanderhoff 
© 2015 Kelli Kallenborn |
|
Rumex conglomeratus Clustered dock, Green dock
non-native
Perennial herb 
© 2020 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Rumex crispus Curly dock, Curly leaved dock, Rhubarb
• invasive non-native
Perennial herb 
© 2018 Tim Lewis 
© 2019 Diane Etchison 
© 2023 Ron Vanderhoff |
|
Rumex dentatus Toothed dock
non-native
Annual, Perennial herb 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
non-native
Perennial grass |
|
Saccharum ravennae Ravennagrass
• invasive non-native
Perennial grass 
© 2011 Ramona Robison 
© 2009 baelin inc 
© 2022 Grace Ferguson |
|
Salix babylonica Weeping willow
non-native
Tree 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Salix exigua Narrow leaved willow, Narrowleaf willow, Sandbar willow
native
Tree, Shrub 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
Salix gooddingii Goodding's black willow, Goodding's willow, Gooding's willow
native
Tree 
© 2020 Ron Vanderhoff 
© 2021 Richard Spjut 
© 2020 Ron Vanderhoff |
|
Salix laevigata Polished willow, Red willow
native
Tree 
© 2017 Steve Matson 
© 2017 Steve Matson 
© 2017 Steve Matson |
|
Salix lasiolepis Arroyo willow
native
Tree, Shrub 
© 2019 Steve Matson 
© 2022 Ron Vanderhoff 
© 2020 Steve Matson |
|
Salix melanopsis Dusky willow
native
Tree, Shrub 
© 2014 Shawna Martinez 
© 2017 Susan Kotelnicki 
© 2025 Mike Russler |
|
Salix sessilifolia Northern sandbar willow, Northwest sandbar willow, Northwest willow
native
Shrub 
© 2004 John Bair 
© 2004 John Bair 
© 2004 John Bair |
|
Salsola tragus Prickly russian thistle, Russianthistle, Tumbleweed
• invasive non-native
Annual herb 
© 2017 Ron Vanderhoff 
© 2018 Angelique Herman 
© 2023 Cynthia Powell |
|
Sambucus nigra ssp. caerulea Blue elderberry
native
Tree, Shrub 
© 2021 Mike Russler 
© 2020 Diane Etchison 
© 2022 El Byrne |
|
Schoenoplectus acutus Hardstem bulrush
native
Perennial grasslike herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2015 Steve Matson |
|
native
Perennial grasslike herb 
© 2019 Steve Matson 
© 2019 Steve Matson 
© 2019 Steve Matson |
|
Schoenoplectus pungens var. longispicatus Common threesquare
native
Perennial grasslike herb 
© 2022 R.A. Chasey 
© 2024 R.A. Chasey 
© 2008 Toni Corelli |
|
Secale cereale Cereal rye
non-native
Annual grass 
© 2024 Manzanita Dictionary 
© 2024 Manzanita Dictionary 
© 2024 Manzanita Dictionary |
|
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 |
|
Sequoia sempervirens Coast redwood
native
Tree 
© 2019 Patrick Furtado 
© 2022 David Strauch 
© 2019 R.A. Chasey |
|
Sesbania punicea Red sesbania, Rattlebox
• invasive non-native
Shrub 
© 2020 Jennifer Mo 
© 2017 Ellen Uhler 
© 2018 Jennifer Mo |
|
Setaria parviflora Marsh bristlegrass
native
Perennial grass 
© 2018 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2023 Donald Burk |
|
Setaria pumila Yellow bristlegrass
non-native
Annual grass 
© 2017 Peter Warner 
© 2016 Thomas Reyes 
© 2017 Peter Warner |
|
Setaria verticillata Hooked bristlegrass
non-native
Annual grass 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Setaria viridis Green bristlegrass, Green foxtail
non-native
Annual grass 
© 2017 Ron Vanderhoff 
© 2012 Zoya Akulova-Barlow 
© 2021 David popp |
|
Sherardia arvensis Blue fieldmadder, Field madder
non-native
Annual herb 
© 2005 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Silybum marianum Blessed milkthistle, Milk thistle
• invasive non-native
Annual, Perennial herb 
© 2020 Nancy Hamlett 
© 2019 Marisa Persaud 
© 2018 Angelique Herman |
|
Sinapis arvensis Charlock mustard
• invasive non-native
Annual herb 
© 2020 Randy Huey 
© 2022 Mike Russler 
© 2023 Andy Ford |
|
Sisymbrium irio London rocket
• invasive non-native
Annual herb 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff 
© 2022 Mike Russler |
|
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 elaeagnifolium Horse nettle, Silver leaved horsenettle, Silverleaf nightshade
• invasive non-native
Perennial herb 
© 2021 Charles Russell 
© 2019 Ron Vanderhoff 
© 2015 Ron Vanderhoff |
|
Solanum nigrum Black nightshade
non-native
Annual herb 
© 2019 Julian Geoghegan 
© 2019 Patrick Furtado 
© 2021 Mike Russler |
|
Solanum rostratum Buffalo berry, Buffalobur nightshade
non-native
Annual herb 
© 2016 Ron Vanderhoff 
© 2021 Timothy Blank 
© 2019 Ron Vanderhoff |
|
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 |
|
Sorghum bicolor Sorghum
non-native
Annual grass 
© 2014 Ron Vanderhoff 
© 2021 Keir Morse 
© 2017 Fred Melgert / Carla Hoegen |
|
Sorghum halepense Johnsongrass
• invasive non-native
Perennial grass  © 2014 Robert F Norris 
© 2019 Jennifer Mo 
© 2020 Julie A. Kierstead |
|
Sparaxis tricolor Harlequin flower, Wandflower
non-native
Perennial herb 
© 2018 Rachel Way 
© 2022 Tatiana Manzanillo 
© 2021 Jessica Cornelius |
|
Spartium junceum Gorse, Spanish broom
• invasive non-native
Shrub 
© 2020 Ron Vanderhoff 
© 2021 Mary Herr 
© 2020 Julie A. Kierstead |
|
Spergularia bocconi Boccone's sand spurry
non-native
Annual herb 
© 2021 Ron Vanderhoff 
© 2021 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Spergularia rubra Purple sand spurry, Red sandspurry, Ruby sandspurry
non-native
Annual, Perennial herb 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff 
© 2023 Ron Vanderhoff |
|
Stellaria media Chickweed
non-native
Annual herb 
© 2018 Gary McDonald 
© 2018 Gary McDonald 
© 2015 Diane Etchison |
|
Stipa hymenoides Indian rice grass, Sand grass
native
Perennial grass 
© 2023 Steve Matson 
© 2022 Steve Matson 
© 2022 Ryan O'Dell |
|
Stipa lepida Foothill needle grass
native
Perennial grass 
© 2017 Gary McDonald 
© 2023 Ron Vanderhoff 
© 2024 Mel Letterman |
|
Stipa miliacea Smilo grass
non-native
Perennial grass 
© 2021 Ron Vanderhoff 
© 2020 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Stipa miliacea var. miliacea Smilo grass
• invasive non-native
Perennial grass 
© 2022 Donald Burk 
© 2022 Ron Vanderhoff 
© 2022 Donald Burk |
|
Stipa pulchra Purple needle grass
native
Perennial grass 
© 2019 Michelle Karle 
© 2008 Zoya Akulova 
© 2019 Ron Vanderhoff |
|
Symphoricarpos albus var. laevigatus Common snowberry, Upright snowberry, Snowberry
native
Shrub 
© 2020 Jacob Smith 
© 2020 Jacob Smith 
© 2021 Mike Russler |
|
Symphyotrichum lentum Suisun marsh aster
• rare native
Perennial herb (rhizomatous) 
© 2021 John Game 
© 2022 Morgan Stickrod 
© 2022 Morgan Stickrod |
|
Symphyotrichum subulatum Eastern annual saltmarsh aster
native
Annual herb 
© 2019 Ron Vanderhoff 
© 2018 Ron Vanderhoff 
© 2018 Ron Vanderhoff |
|
Tamarix parviflora Fourstamen tamarisk, Smallflower tamarisk
• invasive non-native
Tree, Shrub 
© 2015 Steve Matson 
© 2020 Leslie Cobb 
© 2015 Steve Matson |
|
Torilis arvensis Field hedge parsley, Spreading hedgeparsley, Tall Sock-Destroyer
• invasive non-native
Annual herb 
© 2019 Ron Vanderhoff 
© 2017 Gary McDonald 
© 2018 Lindsey Hack |
|
Toxicodendron diversilobum Poison oak, Poisonoak, Western Poison Oak
native
Vine, Shrub 
© 2020 Ron Vanderhoff 
© 2019 Randy Huey 
© 2025 Mike Russler |
|
Tragopogon porrifolius Purple salsify
non-native
Perennial herb 
© 2019 Julie dinsdale 
© 2015 David Wolfson 
© 2020 Martin Cooper |
|
Triadica sebifera Chinese tallowtree
• invasive non-native
Tree 
© 2013 Ron Vanderhoff 
© 2019 Ron Vanderhoff 
© 2013 Ron Vanderhoff |
|
Tribulus terrestris Puncture vine, Puncturevine
• invasive non-native
Annual herb 
© 2015 Steve Matson 
© 2015 Steve Matson 
© 2020 Ron Vanderhoff |
|
Trifolium bifidum var. bifidum Pinole clover
native
Annual herb 
© 2020 Matt Berger 
© 2023 R.A. Chasey 
© 2020 Matt Berger |
|
Trifolium bifidum var. decipiens Notch leaf clover
native
Annual herb 
© 2022 R.A. Chasey 
© 2024 R.A. Chasey 
© 2021 Cameron Chabre |
|
Trifolium depauperatum Cowbag clover, Dwarf sack clover, Pale sack clover
native
Annual herb 
© 2021 Steve Matson 
© 2021 Steve Matson 
© 2022 Ken-ichi Ueda |
|
Trifolium depauperatum var. amplectens Balloon sack clover, Pale bladder clover, Pale sack clover
native
Annual herb 
© 2018 David Greenberger 
© 2023 R.A. Chasey 
© 2018 David Greenberger |
|
Trifolium depauperatum var. truncatum Dwarf sack clover
native
Annual herb 
© 2021 Ron Vanderhoff 
© 2024 Ryan O'Dell 
© 2021 Ron Vanderhoff |
|
Trifolium dubium Shamrock clover, Little Hop Clover, Suckling clover
non-native
Annual herb 
© 2018 Stacie Wolny 
© 2022 Dana York 
© 2017 MCOSD EDRR |
|
Trifolium fucatum Bull clover, Sour clover
native
Annual herb 
© 2014 Steve Matson 
© 2024 Mike Russler 
© 2025 Mike Russler |
|
Trifolium gracilentum Graceful clover, Pin point clover, Pinpoint clover
native
Annual herb 
© 2016 Steve Matson 
© 2016 Steve Matson 
© 2016 Steve Matson |
|
Trifolium resupinatum Reversed clover
non-native
Annual herb 
© 2025 R.A. Chasey 
© 2019 James Gonsman 
© 2019 James Gonsman |
|
Trifolium variegatum Variegated clover, White tipped clover, Whitetip clover
native
Annual herb 
© 2022 Steve Matson 
© 2017 Michael Mitchell 
© 2019 Diane Etchison |
|
Trifolium willdenovii Tomcat clover
native
Annual herb 
© 2024 Steve Conger 
© 2024 Steve Conger 
© 2018 Stacie Wolny |
|
Triphysaria eriantha ssp. eriantha Butter 'n' eggs, Johnny tuck
native
Annual herb 
© 2005 Steve Matson 
© 2021 Steve Matson 
© 2008 Steve Matson |
|
Triteleia hyacinthina White brodiaea, Wild hyacinth, White Brodiaea, Fool's Onion
native
Perennial herb 
© 2008 Steve Matson 
© 2008 Steve Matson 
© 2008 Steve Matson |
|
Triticum aestivum Common wheat, Wheat
non-native
Annual grass 
© 2022 Lenihan Mazur 
© 2021 John Rawlings 
© 2011 Toni Corelli |
|
Tropidocarpum gracile Dobie pod, Slender keel fruit, Slender tropidocarpum
native
Annual herb 
© 2014 Steve Matson 
© 2014 Steve Matson 
© 2014 Steve Matson |
|
Tuctoria mucronata Crampton's tuctoria, Prickly spiralgrass
• rare native
Annual grass 
© 2019 Greg Kareofelas 
© 2019 Greg Kareofelas 
© 2019 Greg Kareofelas |
|
Typha latifolia Broadleaf cattail, Common cattail, Soft flag
native
Perennial herb (aquatic) 
© 2013 Steve Matson 
© 2013 Steve Matson 
© 2013 Steve Matson |
|
Veronica peregrina ssp. xalapensis Hairy purslane speedwell, Neckweed, Purslane speedwell
native
Annual herb 
© 2020 Steve Matson 
© 2020 Ron Vanderhoff 
© 2020 Steve Matson |
|
Vicia sativa ssp. nigra Common vetch, Garden vetch, Smaller common vetch
non-native
Annual herb, Vine 
© 2020 Ken Lunders 
© 2023 Ron Vanderhoff 
© 2020 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 |
|
Vicia villosa Hairy vetch, Hairy Vetch, Winter Vetch
• invasive non-native
Annual herb, Vine 
© 2024 Cynthia Powell 
© 2023 Ron Vanderhoff 
© 2024 Ron Vanderhoff |
|
Vinca major Greater periwinkle, Bigleaf periwinkle
• invasive non-native
Perennial herb 
© 2020 Julia Markey 
© 2022 Ron Vanderhoff 
© 2021 Ron Vanderhoff |
|
Vitis californica California grape, California wild grape
native
Vine, Shrub 
© 2015 Bill Bogdanoff 
© 2013 Zoya Akulova 
© 2019 Jennifer Mo |
|
Washingtonia filifera California fan palm, Fan palm
native
Tree 
© 2021 Ron Vanderhoff 
© 2020 Brad Hardison  © Douglas |
|
Washingtonia robusta Mexican fan palm
• invasive non-native
Tree 
© 2018 James Bailey 
© 2021 Ron Vanderhoff  © 2015 Zoya Akulova |
|
Xanthium strumarium Rough cockleburr
native
Annual herb 
© 2011 Steve Matson 
© 2011 Steve Matson 
© 2011 Steve Matson |
|
Ziziphus zizyphus Common jujube
non-native
Tree, Shrub  © 2005 Luigi Rignanese 
© 2017 Ron Vanderhoff  © 2005 Luigi Rignanese |
