Illustrated Plant List

Acer macrophyllum Big leaf maple, Bigleaf maple

native

Tree

SAPINDACEAE

Achillea millefolium Common yarrow

native

Perennial herb

Acmispon americanus var. americanus American bird's foot trefoil, American trefoil, Spanish lotus

native

Annual herb

Acmispon glaber var. glaber Deerweed

native

Perennial herb

Acmispon junceus var. junceus Rush lotus

native

Perennial herb

Acmispon strigosus Strigose lotus

native

Annual herb

Acmispon wrangelianus Wrangel lotus

native

Annual herb

Adelinia grandis Hound's tongue, Western houndstongue, Adelinia

native

Perennial herb

Adenostoma fasciculatum var. fasciculatum Chamise

native

Tree, Shrub

Adenostoma fasciculatum var. fasciculatum

Adiantum jordanii Adiantum, maiden hair fern

native

Fern

Ageratina adenophora Sticky snakeroot, Thoroughwort

invasive non-native
moderate

Perennial herb

Agoseris grandiflora var. grandiflora Giant mountain dandelion

native

Perennial herb

Agrostis pallens Leafy bent grass, Diego bent grass, Seashore bentgrass

native

Perennial grass

Allium haematochiton Red skinned onion, Redskin onion

native

Perennial herb (bulb)

ALLIACEAE

Antirrhinum kelloggii Climbing snapdragon, Kellogg's snapdragon, Lax snapdragon

native

Annual herb

Aphyllon californicum ssp. jepsonii Jepson's california broom rape

native

Perennial herb (parasitic)

Apiastrum angustifolium Mock parsley, Wild celery, Wild parsley

native

Annual herb

Apium graveolens Smallage, Garden celery

non-native

Annual, Biennial herb

Apocynum androsaemifolium Bitter dogbane, Spreading dogbane

native

Perennial herb

APOCYNACEAE

Aquilegia eximia Serpentine columbine, Sticky columbine, Van Houtte's columbine

native

Perennial herb

Aristida adscensionis Six weeks three awn, Sixweeks threeawn

native

Annual grass

Artemisia californica California sagebrush, Coast sagebrush, Coastal sage brush

native

Shrub

Artemisia douglasiana California mugwort, Douglas' sagewort

native

Perennial herb

Asclepias fascicularis Narrow leaf milkweed

native

Perennial herb

APOCYNACEAE

Astragalus curtipes Morro milkvetch, San luis obispo milkvetch, South coast milk vetch

native

Perennial herb

Astragalus gambelianus Dwarf loco weed, Gambel's dwarf milk vetch, Gambel's locoweed

native

Annual herb

Avena barbata Slender oat, Slim oat

invasive non-native
moderate

Annual grass

Avena fatua Wild oat, Wildoat

invasive non-native
moderate

Annual grass

Azolla filiculoides American water fern, mosquito fern, Mosquito fern, Pacific mosquitofern

native

Fern

AZOLLACEAE

Baccharis pilularis Coyote brush, Dwarf chaparral broom

native

Shrub

Bloomeria crocea var. aurea Common goldenstar

native

Perennial herb

THEMIDACEAE

Bloomeria crocea var. crocea Common goldenstar

native

Perennial herb

THEMIDACEAE

Brachypodium hybridum Small Tree-Mallow

Brassica nigra Black mustard

invasive non-native
moderate

Annual herb

Briza maxima Big quaking grass, Big quakinggrass, Rattlesnake grass

invasive non-native
limited

Annual grass

Bromus carinatus var. carinatus California brome, Mountain brome

native

Perennial grass

Bromus diandrus Bromegrass, Ripgut brome, Ripgut grass

invasive non-native
moderate

Annual grass

Bromus hordeaceus Soft brome, Soft chess

invasive non-native
limited

Annual grass

Bromus madritensis Foxtail chess, foxtail brome, Madrid brome, Spanish brome

non-native

Annual grass

Bromus pseudolaevipes Coast range brome, Southern chinook brome

native

Perennial grass

Bromus rubens Red brome

invasive non-native

Annual grass

Calibrachoa parviflora Wild petunia

native

Annual herb

SOLANACEAE

Calochortus albus White fairy lantern, White globe lily

native

Perennial herb

Calochortus clavatus var. clavatus Club haired mariposa lily, Clubhair mariposa lily

rare native
4.3

Perennial herb (bulb)

Calochortus obispoensis San luis mariposa lily

rare native
1B.2

Perennial herb (bulb)

Calystegia macrostegia ssp. cyclostegia Coast morning glory, Island false bindweed

native

Perennial herb, Vine

CONVOLVULACEAE

Cardamine californica California toothwort, milkmaids

native

Perennial herb

Carduus pycnocephalus Italian thistle

invasive non-native
moderate

Annual herb

Carex nudata Dudley's sedge, Naked sedge, Torrent sedge

native

Perennial grasslike herb

Carex obispoensis San Luis Obispo sedge, San Luis sedge

rare native
1B.2

Perennial grasslike herb (rhizomatous)

Carex spissa San diego sedge

native

Perennial grasslike herb

Castilleja affinis ssp. affinis Coast indian paintbrush

native

Perennial herb

Castilleja densiflora ssp. obispoensis Obispo indian paintbrush, San luis obispo owl's clover

native

Annual herb

Ceanothus cuneatus var. ramulosus Buck brush

native

Shrub

RHAMNACEAE

Centaurea melitensis Maltese star thistle, Napa star thistle, Tocalote

invasive non-native
moderate

Annual herb

Cercocarpus betuloides var. betuloides Birch leaf mountain mahogany

native

Tree, Shrub

Chlorogalum pomeridianum var. pomeridianum Common soaproot, Wavyleaf soap plant

native

Perennial herb

AGAVACEAE

Chlorogalum pomeridianum var. pomeridianum

Chorizanthe breweri Brewer's spineflower, San luis obispo spineflower

rare native
1B.3

Annual herb

Chorizanthe palmeri Palmer's spineflower

rare native
4.2

Annual herb

Cirsium fontinale var. obispoense Chorro creek bog thistle

rare native
1B.2

Perennial herb

Cirsium vulgare Bull thistle

invasive non-native
moderate

Perennial herb

Clarkia affinis Chaparral clarkia, Chaparral fairyfan

native

Annual herb

Clarkia bottae Botta's clarkia, Punch bowl godetia

native

Annual herb

Clarkia purpurea ssp. quadrivulnera Four-spot, Purple clarkia, Purple godetia

native

Annual herb

Clarkia unguiculata Elegant clarkia, Mountain garland, Woodland clarkia

native

Annual herb

Claytonia perfoliata ssp. perfoliata Claytonia, Miner's lettuce

native

Annual herb

MONTIACEAE

Collinsia heterophylla Purple chinese houses

native

Annual herb

Conium maculatum Poison hemlock

invasive non-native
moderate

Perennial herb

Cordylanthus rigidus ssp. rigidus Rigid bird's beak, Stiffbranch bird's beak

native

Annual herb (hemiparasitic)

Corethrogyne filaginifolia Common sandaster

native

Perennial herb

Cornus sericea ssp. occidentalis Western dogwood

native

Shrub

CORNACEAE

Cortaderia selloana Uruguayan pampas grass

invasive non-native
high

Perennial grass

Cotoneaster franchetii Cotoneaster, Francheti cotoneaster, Orange cotoneaster

invasive non-native
moderate

Shrub

Crassula connata Pigmy weed, Sand pygmy weed, Sand pygmyweed

native

Annual herb

Crocanthemum scoparium peak rush-rose, broom rush-rose

native

Shrub

CISTACEAE

Croton setiger Turkey-mullein

native

Annual herb

EUPHORBIACEAE

Cryptantha clevelandii var. florosa Coastal cryptantha

native

Annual herb

Cryptantha microstachys Popcorn flower, Tejon cryptantha

native

Annual herb

Cryptantha muricata var. muricata Showy prickly-nut cryptantha

native

Annual herb

Cynodon dactylon Bermuda grass, Bermudagrass

invasive non-native
moderate

Perennial grass

Daucus pusillus American wild carrot, Rattlesnake weed

native

Annual herb

Delphinium parryi ssp. eastwoodiae Eastwood's larkspur

rare native
1B.2

Perennial herb

Dendromecon rigida Bush poppy, Tree poppy

native

Shrub

Deschampsia elongata Hairgrass, Slender hairgrass

native

Perennial grass

Diplacus aurantiacus ssp. aurantiacus Orange Bush Monkeyflower

native

Shrub

PHRYMACEAE

Dipterostemon capitatus ssp. capitatus [Dichelostemma capitatum ssp. capitatum] Blue dicks

native

Perennial herb

THEMIDACEAE

Dipterostemon capitatus ssp. capitatus [Dichelostemma capitatum ssp. capitatum]

Dryopteris arguta California wood fern, Coastal wood fern, Shield fern

native

Fern

DRYOPTERIDACEAE

Dudleya abramsii ssp. murina San Luis Obispo dudleya

rare native
1B.1

Perennial herb

Dudleya lanceolata Lanceleaf liveforever, Southern california dudleya

native

Perennial herb

Dudleya pulverulenta Chalk dudleya

native

Perennial herb

Eleocharis macrostachya Common spikerush, Creeping spike rush, Pale spikerush

native

Perennial grasslike herb

Elymus condensatus Giant wild rye

native

Perennial grass

Elymus glaucus ssp. glaucus Blue wild rye, Blue wildrye, Western rye grass

native

Perennial grass

Elymus multisetus Big squirreltail grass

native

Perennial grass

Elymus triticoides Beardless wild rye

native

Perennial grass

Epilobium canum ssp. canum California fuchsia, Hummingbird trumpet

native

Perennial herb

Epilobium ciliatum ssp. ciliatum Fringed willowherb, Northern willow herb, Willow herb

native

Perennial herb

Epilobium minutum Chaparral willowherb, Desert willow herb, Little willowherb

native

Annual herb

Equisetum telmateia ssp. braunii Giant horse tail, Giant horsetail

native

Fern

EQUISETACEAE

Erigeron bonariensis Flax-leaved horseweed

non-native

Annual herb

Erigeron foliosus var. foliosus Leafy fleabane, Thread stemmed fleabane

native

Perennial herb, Shrub

Erigeron philadelphicus Philadelphia fleabane

native

Perennial herb

Eriogonum elongatum var. elongatum Long stemmed buckwheat

native

Perennial herb

Eriogonum fasciculatum var. foliolosum California buckwheat, Eastern mojave buckwheat, Red topped buckwheat

native

Shrub

Eriophyllum confertiflorum var. confertiflorum Golden yarrow, Yellow yarrow

native

Shrub

Eriophyllum confertiflorum var. confertiflorum

Erodium botrys Big heron bill, Broad leaf filaree, Long beaked filaree

non-native

Annual herb

Erodium cicutarium Coastal heron's bill, Red stemmed filaree, Redstem stork's bill

invasive non-native
limited

Annual herb

Erodium moschatum Musky stork's bill, White stemmed filaree, Whitestem filaree

invasive non-native

Annual herb

Erythranthe guttata Seep monkey flower, Yellow monkey flower

native

Annual, Perennial herb (rhizomatous)

PHRYMACEAE

Eschscholzia caespitosa Foothill poppy, Tufted eschscholzia, Tufted poppy

native

Annual herb

Eschscholzia californica California poppy

native

Annual, Perennial herb

Eucalyptus globulus Blue gum, Tasmanian bluegum

invasive non-native
limited

Tree

MYRTACEAE

Eucrypta chrysanthemifolia var. chrysanthemifolia Common eucrypta, Spotted hideseed

native

Annual herb

Eucrypta chrysanthemifolia var. chrysanthemifolia

Euphorbia peplus Petty spurge

non-native

Annual herb

EUPHORBIACEAE

Euphorbia spathulata Reticulate seeded spurge, Warty spurge

native

Annual herb

EUPHORBIACEAE

Festuca californica California fescue

native

Perennial grass

Festuca elmeri Coast fescue, Elmer fescue

native

Perennial grass

Festuca microstachys Small fescue

native

Annual grass

Festuca myuros Rattail sixweeks grass

invasive non-native
moderate

Annual grass

Festuca occidentalis Western fescue

native

Perennial grass

Festuca octoflora Sixweeks grass

native

Annual grass

Festuca perennis Italian rye grass

invasive non-native
moderate

Annual, Perennial grass

Foeniculum vulgare Biscuit root, Sweet fennel

invasive non-native
moderate

Perennial herb

Frangula californica ssp. californica California coffeeberry

native

Shrub

RHAMNACEAE

Fritillaria biflora var. biflora Chocolate lily

native

Perennial herb (bulb)

Fritillaria ojaiensis Ojai fritillary

rare native
1B.2

Perennial herb (bulb)

Galium andrewsii Needlemat galium, Phlox leaved bedstraw, Phloxleaf bedstraw

native

Perennial herb

Galium aparine Cleavers, Common bedstraw, Goose grass

native

Annual herb

Galium californicum ssp. flaccidum California bedstraw

native

Perennial herb

Galium porrigens var. porrigens Climbing bedstraw, Graceful bedstraw, Oval leaved bedstraw

native

Vine, Shrub

Gamochaeta ustulata Featherweed

native

Perennial herb

Garrya veatchii Canyon silktassel, Southern silk tassel, Veatch silktassel

native

Shrub

GARRYACEAE

Gastridium phleoides Nit grass

non-native

Annual grass

Genista monspessulana French broom

invasive non-native
high

Shrub

Geranium dissectum Cranesbill, Cut leaved geranium, Cutleaf geranium

invasive non-native
limited

Annual herb

Gilia achilleifolia ssp. achilleifolia California gilia

native

Annual herb

POLEMONIACEAE

Grindelia hirsutula Gumweed, Hairy gumweed

native

Perennial herb

Hazardia squarrosa var. squarrosa Saw toothed goldenbush, Sawtooth goldenbush

native

Shrub

Helenium puberulum Rosilla, Sneezeweed

native

Perennial herb

Helminthotheca echioides Bristly ox-tongue

invasive non-native
limited

Annual, Perennial herb

Hemizonia congesta ssp. luzulifolia Hayfield tarweed, Woodrush tarweed

native

Annual herb

Hesperevax sparsiflora var. sparsiflora Erect dwarf cudweed, Few flowered evax

native

Annual herb

Hesperocyparis sargentii Sargent cypress

native

Tree, Shrub

CUPRESSACEAE

Hesperolinon micranthum Common dwarf flax, Small flower western flax, Small flowered dwarf flax

native

Annual herb

LINACEAE

Hesperoyucca whipplei Chaparral yucca

native

Shrub

AGAVACEAE

Heteromeles arbutifolia Christmas berry, Toyon

native

Shrub

Hirschfeldia incana Mediterranean hoary mustard, Short podded mustard, Summer mustard

invasive non-native
moderate

Perennial herb

Hoita macrostachya California hemp, Large leather root

native

Perennial herb

Holodiscus discolor Cream bush, Ocean spray, Oceanspray

native

Shrub

Hordeum marinum ssp. gussoneanum Barley, Mediterranean barley

non-native

Annual grass

Hordeum murinum ssp. leporinum Farmer's foxtail, Foxtail barley, Hare barley

non-native

Annual grass

Hypochaeris glabra Smooth cat's ear

invasive non-native
limited

Annual herb

Juncus balticus ssp. ater Baltic rush

native

Perennial grasslike herb

Juncus bufonius var. bufonius Toad rush

native

Annual grasslike herb

Juncus patens Common rush, Spreading rush

native

Perennial grasslike herb

Juncus xiphioides Iris leaved rush, Irisleaf rush

native

Perennial grasslike herb

Keckiella cordifolia Climbing penstemon, Heart leaved keckiella, Heartleaf keckiella

native

Shrub

Koeleria macrantha June grass, Prairie junegrass

native

Perennial grass

Lactuca saligna Narrow leaved wild lettuce, Willow lettuce, Willowleaf lettuce

non-native

Annual herb

Lasthenia gracilis Needle goldfields

native

Annual herb

Lathyrus vestitus var. vestitus Common pacific pea, Hillside pea, Wild sweetpea

native

Perennial herb

Layia jonesii Jones' tidytips, Jones's layia

rare native
1B.2

Annual herb

Layia platyglossa Coastal tidytips

native

Annual herb

Lepidium nitidum Peppergrass, Shining pepper grass, Shining pepperweed

native

Annual herb

Leptosiphon parviflorus Variable linanthus

native

Annual herb

POLEMONIACEAE

Leptosyne douglasii Douglas' coreopsis

native

Annual herb

Lithophragma heterophyllum Hill star, Hillside woodland star

native

Perennial herb

SAXIFRAGACEAE

Lobularia maritima Sweet alyssum

invasive non-native
limited

Perennial herb

Logfia filaginoides California cottonrose

native

Annual herb

Logfia gallica Narrowleaf cottonrose

non-native

Annual herb

Lomatium caruifolium var. caruifolium Alkali desertparsley, Caraway leaved lomatium

native

Perennial herb

Lomatium dasycarpum ssp. dasycarpum Woolly fruited lomatium, Woollyfruit desertparsley

native

Perennial herb

Lomatium parvifolium Coastal biscuitroot, Small leaved lomatium

rare native
4.2

Perennial herb

Lomatium utriculatum Bladder parsnip, Common lomatium, Hog fennel

native

Perennial herb

Lonicera hispidula Pink honeysuckle

native

Vine, Shrub

CAPRIFOLIACEAE

Lotus corniculatus Bird's foot trefoil, Birdfoot deervetch, Broadleaf birdsfoot trefoil

invasive non-native

Perennial herb

Lupinus albifrons var. abramsii Abrams' lupine

rare native
3.2

Perennial herb

Lupinus bicolor Annual lupine, Bicolored lupine, Miniature lupine

native

Annual, Perennial herb

Lupinus hirsutissimus Stinging annual lupine, Stinging lupine

native

Annual herb

Lupinus succulentus Arroyo lupine, Hollowleaf annual lupine, Succulent lupine

native

Annual herb

Lupinus truncatus Blunt leaved lupine, Collared annual lupine, Truncate leaf lupine

native

Annual herb

Luzula subsessilis Pacific woodrush

native

Perennial grasslike herb

Lysimachia arvensis Scarlet pimpernel

non-native

Annual herb

MYRSINACEAE

Lysimachia latifolia Pacific starflower

native

Perennial herb

MYRSINACEAE

Madia gracilis Grassy tarweed, Gumweed madia, Slender tarweed

native

Annual herb

Malva nicaeensis Bull mallow

non-native

Annual herb

MALVACEAE

Malva parviflora Cheeseweed mallow

non-native

Annual herb

MALVACEAE

Marah fabacea California man-root

native

Perennial herb, Vine

CUCURBITACEAE

Matricaria discoidea Pineapple weed

native

Annual herb

Medicago polymorpha Bur clover, Bur medic, California burclover

invasive non-native
limited

Annual herb

Melica imperfecta California melic, Coast range melic, Small flowered melica

native

Perennial grass

Melica torreyana Torrey melic, Torrey's melica, Torrey's melicgrass

native

Perennial grass

Melilotus albus White sweetclover

invasive non-native

Annual, Biennial herb

Melilotus indicus Annual yellow sweetclover, Sourclover

non-native

Annual herb

Micranthes californica Greene's saxifrage

native

Perennial herb

SAXIFRAGACEAE

Microseris douglasii ssp. douglasii Douglas' microseris, Douglas' silverpuffs

native

Annual herb

Monardella palmeri Palmer's monardella

rare native
1B.2

Perennial herb (rhizomatous)

Monardella villosa ssp. obispoensis San luis obispo coyote mint

native

Perennial herb

Nasturtium officinale Watercress

native

Perennial herb (aquatic)

Nuttallanthus texanus Blue toadflax

native

Annual, Perennial herb

Opuntia ficus-indica Mission cactus, Tuna cactus

non-native

Shrub (stem succulent)

CACTACEAE

Opuntia phaeacantha Brown spined prickly pear, Mojave prickly pear, Tulip pricklypear

native

Shrub (stem succulent)

CACTACEAE

Oxalis pes-caprae Bermuda buttercup, Sourgrass

invasive non-native
moderate

Perennial herb

OXALIDACEAE

Paeonia californica California peony

native

Perennial herb

PAEONIACEAE

Papaver californicum Fire poppy, Western poppy

native

Annual herb

Pedicularis densiflora Warrior's plume, Indian warrior

native

Perennial herb

Pellaea andromedifolia Coffee cliffbrake, Coffee fern

native

Fern

Pellaea mucronata var. mucronata Bird's foot fern

native

Fern

Pentagramma triangularis ssp. triangularis Gold back fern

native

Fern

Pentagramma triangularis ssp. triangularis

Perideridia pringlei Adobe yampah

rare native
4.3

Perennial herb

Phacelia distans Common phacelia, Distant phacelia, Wild heliotrope

native

Annual herb

Phacelia imbricata ssp. imbricata Imbricate Phacelia

native

Annual herb

Phalaris paradoxa Hood canarygrass

non-native

Annual grass

Pholistoma auritum var. auritum Blue fiesta flower, Blue fiestaflower, Fiesta flower

native

Annual herb

Phoradendron villosum ssp. villosum Mistletoe

native

Shrub (parasitic)

VISCACEAE

Pickeringia montana var. montana Montana chaparral pea

native

Shrub

Pinus attenuata Knobcone pine, Scrub pine

native

Tree

PINACEAE

Plantago erecta California plantain, Dotseed plantain, Foothill plantain

native

Annual herb

Plantago lanceolata English plantain, Narrow leaved plantain, Ribgrass

invasive non-native
limited

Perennial herb

Platanus racemosa California sycamore, Western sycamore

native

Tree

PLATANACEAE

Platystemon californicus Cream cups, Creamcups

native

Annual herb

Poa annua Annual blue grass, Annual bluegrass

non-native

Annual grass

Poa secunda ssp. secunda One sided blue grass, Pine bluegrass, Sandberg's bluegrass

native

Perennial grass

Polygonum aviculare Prostrate knotweed

non-native

Annual, Perennial herb

Polypodium californicum California polypody

native

Fern

POLYPODIACEAE

Polypogon interruptus Ditch beard grass, Ditch rabbitsfoot grass

non-native

Perennial grass

Polypogon monspeliensis Annual beard grass, Rabbitsfoot grass

invasive non-native
limited

Annual grass

Polypogon viridis Water beard grass

non-native

Perennial grass

Populus trichocarpa Black cottonwood

native

Tree

Primula clevelandi [Dodecatheon clevelandii] Small Tree-Mallow

Prunus dulcis Domestic almond, Sweet almond

non-native

Tree

Prunus ilicifolia ssp. ilicifolia Holly leaf cherry, Hollyleaf cherry

native

Tree, Shrub

Pseudognaphalium californicum Ladies' tobacco

native

Annual, Perennial herb

Pseudognaphalium luteoalbum Jersey cudweed

non-native

Annual herb

Pteridium aquilinum var. pubescens Hairy brackenfern, Western bracken fern

native

Fern

DENNSTAEDTIACEAE

Pterostegia drymarioides Fairy mist, Woodland threadstem

native

Annual herb

Quercus agrifolia var. agrifolia California live oak, Coast live oak

native

Tree

Quercus berberidifolia Inland scrub oak

native

Tree

Quercus durata var. durata Leather oak

native

Shrub

Quercus lobata California white oak, Valley oak

native

Tree

Rafinesquia californica California chicory, California plumseed

native

Annual herb

Ranunculus californicus California buttercup

native

Perennial herb

Rhamnus crocea Redberry buckthorn

native

Shrub

RHAMNACEAE

Ribes speciosum Fuchsia flowered gooseberry, Fuchsiaflower gooseberry

native

Shrub

GROSSULARIACEAE

Rosa californica California wild rose, California wildrose

native

Shrub

Rubus armeniacus Himalayan blackberry, black berry, Armenian blackberry

invasive non-native
high

Shrub

Rubus ursinus California blackberry, Pacific blackberry

native

Vine, Shrub

Rumex conglomeratus Clustered dock, Green dock

non-native

Perennial herb

Rumex crispus Curly dock, Curly leaved dock, Rhubarb

invasive non-native
limited

Perennial herb

Rumex pulcher Fiddle dock

non-native

Perennial herb

Rumex salicifolius var. salicifolius Willow dock, Willow leaved dock

native

Perennial herb

Rupertia physodes California tea, Common rupertia, Forest scurfpea

native

Perennial herb

Sabulina douglasii Douglas' Stitchwort

native

Annual herb

Salix breweri Brewer's willow, Serpentine willow

native

Shrub

Salix laevigata Polished willow, Red willow

native

Tree

Salix lasiandra var. lasiandra Pacific willow

native

Tree

Salix lasiolepis Arroyo willow

native

Tree, Shrub

Salvia columbariae Chia sage

native

Annual herb

Salvia mellifera Black sage

native

Shrub

Salvia spathacea Hummingbird sage

native

Perennial herb

Sambucus nigra ssp. caerulea Blue elderberry

native

Tree, Shrub

VIBURNACEAE

Sanicula arguta Sharp toothed sanicle, Sharp toothed snakeroot, Sharptooth blacksnakeroot

native

Perennial herb

Sanicula crassicaulis Gamble weed, Pacific blacksnakeroot, Pacific sanicle

native

Perennial herb

Sanicula hoffmannii Hoffmann's blacksnakeroot, Hoffmann's sanicle, Hoffmann's snakeroot

rare native
4.3

Perennial herb

Schinus molle Peruvian pepper tree, Peruvian peppertree

invasive non-native
limited

Tree

ANACARDIACEAE

Scirpus microcarpus Panicled bulrush, Small fruited bulrush

native

Perennial grasslike herb

Scrophularia californica ssp. californica California bee plant, California figwort

native

Perennial herb

SCROPHULARIACEAE

Scrophularia californica ssp. californica

Scutellaria tuberosa Danny's skullcap, Scullcap

native

Perennial herb

Selaginella bigelovii Bigelow's moss fern, Bigelow's spike moss, Bushy spikemoss

native

SELAGINELLACEAE

Senecio aphanactis California groundsel, Chaparral ragwort, Rayless ragwort

rare native
2B.2

Annual herb

Senecio vulgaris Common groundsel, Old man in the spring, Old man of spring

non-native

Annual herb

Silene gallica Common catchfly, Windmill pink

non-native

Annual herb

Silene laciniata ssp. californica California indian pink

native

Perennial herb

Silybum marianum Blessed milkthistle, Milk thistle

invasive non-native
limited

Annual, Perennial herb

Sisymbrium officinale Hedge mustard, Hedgemustard

non-native

Annual herb

Sisyrinchium bellum Western blue eyed grass

native

Perennial herb

IRIDACEAE

Solanum douglasii Douglas' nightshade, Greenspot nightshade

native

Perennial herb

SOLANACEAE

Solanum umbelliferum var. xanti Blue witch nightshade, Bluewitch nightshade

native

Shrub

SOLANACEAE

Sonchus asper ssp. asper Prickly sow thistle, Sow thistle

invasive non-native

Annual herb

Sonchus oleraceus Common sow thistle, Common sowthistle, Sow thistle

non-native

Annual herb

Stachys bullata California hedge nettle, California hedgenettle, Southern hedge nettle

native

Perennial herb

Stachys pycnantha Short spike hedge nettle, Shortspike hedgenettle

native

Perennial herb

Stebbinsoseris heterocarpa Grassland stebbinsoseris

native

Annual herb

Stellaria media Chickweed

non-native

Annual herb

Stephanomeria virgata ssp. pleurocarpa Tall stephanomeria, Wand stephanomeria, Wand wirelettuce

native

Annual herb

Stipa lepida Foothill needle grass

native

Perennial grass

Stipa miliacea var. miliacea Smilo grass

invasive non-native
limited

Perennial grass

Stipa pulchra Purple needle grass

native

Perennial grass

Streptanthus glandulosus ssp. glandulosus Bristly jewelflower

native

Annual herb

Streptanthus glandulosus ssp. glandulosus

Streptanthus lasiophyllus Small Tree-Mallow

Symphoricarpos mollis Creeping snowberry, Trailing snowberry

native

Shrub

CAPRIFOLIACEAE

Thalictrum fendleri var. polycarpum Fendler's meadow rue, Meadow rue, Torrey's meadow rue

native

Perennial herb

Thysanocarpus laciniatus Common lace pod, Mountain fringepod, Narrow leaved fringe pod

native

Annual herb

Torilis arvensis Field hedge parsley, Spreading hedgeparsley, Tall Sock-Destroyer

invasive non-native
moderate

Annual herb

Torilis nodosa Hedge parsley, Knotted hedge parsley, Knotted hedgeparsley

non-native

Annual herb

Toxicodendron diversilobum Poison oak, Poisonoak, Western Poison Oak

native

Vine, Shrub

ANACARDIACEAE

Toxicoscordion fremontii Star lily, Death Camas

native

Perennial herb

MELANTHIACEAE

Trifolium bifidum var. bifidum Pinole clover

native

Annual herb

Trifolium ciliolatum Foothill clover, Tree clover

native

Annual herb

Trifolium depauperatum var. amplectens Balloon sack clover, Pale bladder clover, Pale sack clover

native

Annual herb

Trifolium fragiferum Strawberry clover

non-native

Perennial herb

Trifolium fucatum Bull clover, Sour clover

native

Annual herb

Trifolium hirtum Rose clover

invasive non-native
limited

Annual herb

Trifolium microdon Thimble clover, Valparaiso clover

native

Annual herb

Trifolium oliganthum Few flowered clover, Fewflower clover, Minitomcat clover

native

Annual herb

Trifolium willdenovii Tomcat clover

native

Annual herb

Triodanis biflora Venus looking glass, Venus' looking glass

native

Annual herb

CAMPANULACEAE

Tropaeolum majus Garden nasturtium, Nasturtium

invasive non-native

Annual herb, Vine

TROPAEOLACEAE

Turritis glabra Tower rockcress

native

Perennial herb

Typha domingensis Narrowleaf cattail, Southern cattail

native

Perennial herb

TYPHACEAE

Umbellularia californica Bay laurel, California bay, California laurel, bay tree

native

Tree

LAURACEAE

Uropappus lindleyi Silver puffs, Uropappus

native

Annual herb

Urtica dioica ssp. holosericea Giant creek nettle, Hoary nettle, Mountain nettle

native

Perennial herb

URTICACEAE

Verbena lasiostachys var. lasiostachys Vervain, Western vervain

native

Perennial herb

VERBENACEAE

Vicia sativa ssp. sativa Garden vetch, Pubescent common vetch, Spring vetch

non-native

Annual herb, Vine

Vicia villosa ssp. varia Smooth vetch, Thick fruited vetch, Winter vetch

non-native

Annual herb, Vine