Checklist1 of Vascular Flora Prefumo Canyon Road Corridor, San Luis Range San Luis Obispo County, (09 June 2019)

David J. Keil Robert F. Hoover Herbarium Biological Sciences Department California Polytechnic State University San Luis Obispo, California

Scientific Name Common Name Family Rare n ❀ Achillea millefolium yarrow x n ❀ Achyrachaena mollis blow wives ASTERACEAE x n ❀ Acmispon americanus var. americanus Spanish-clover FABACEAE x n Acmispon brachycarpus shortpod deervetch FABACEAE x n ❀ Acmispon glaber var. glaber common deerweed FABACEAE x n Acmispon junceus var. junceus common rush deerweed FABACEAE x

1 Please notify the author of additions or corrections to this list ([email protected]). ❀ — See Wildflowers of San Luis Obispo, California, second edition (2018) for photograph. Most are illustrated in the first edition as well; old names for some in square brackets. n — California native i — exotic species, introduced to California, naturalized or waif. v — documented by one or more specimens (Consortium of California Herbaria record; specimen in OBI; or collection that has not yet been accessioned) o — observed during field surveys; no voucher specimen known Rare—California Rare Rank Scientific Name Common Name Family Rare n Acmispon parviflorus miniature deervetch FABACEAE x n ❀ Acourtia microcephala sacapelote ASTERACEAE x n ❀ Adelinia grandis Pacific hound's tongue BORAGINACEAE x n ❀ Adenostoma fasciculatum var. fasciculatum chamise ROSACEAE x n Adiantum jordanii California maidenhair fern PTERIDACEAE x n ❀ Agoseris grandiflora var. grandiflora large-flowered mountain- ASTERACEAE x dandelion n Agrostis densiflora California bentgrass POACEAE x n Agrostis exarata western bentgrass, spike POACEAE x bentgrass n Agrostis pallens San Diego bentgrass POACEAE x i Aira caryophyllea silver hairgrass POACEAE x i Amaryllis belladonna naked ladies AMARYLLIDACEAE x i ❀ Anthemis cotula mayweed, dog-fennel ASTERACEAE x n Aphanes occidentalis western parsley-piert ROSACEAE x n Apocynum cannabinum Indian-hemp APOCYNACEAE x n ❀ Aquilegia eximia serpentine columbine RANUNCULACEAE x n ❀ Arctostaphylos obispoensis bishop manzanita ERICACEAE 4.3 x n ❀ Artemisia californica California sagebrush ASTERACEAE x n ❀ Artemisia douglasiana mugwort ASTERACEAE x i Avena barbata slender wild oats POACEAE x i Avena fatua common wild oats POACEAE x n ❀ Baccharis glutinosa marsh baccharis ASTERACEAE x n ❀ Baccharis pilularis coyote bush ASTERACEAE x n ❀ Barbarea orthoceras American wintercress BRASSICACEAE x Scientific Name Common Name Family Rare i Barbarea verna early wintercress BRASSICACEAE ? n Bloomeria crocea var. crocea common goldenstar THEMIDACEAE x i Brachypodium hybridum false brome POACEAE x n Brickellia californica California brickellbush ASTERACEAE x i Briza maxima rattlesnake grass, quaking POACEAE x grass i Briza minor little quaking grass POACEAE x n Bromus carinatus var. carinatus California brome POACEAE x i Bromus diandrus ripgut brome POACEAE x i Bromus hordeaceus soft chess brome POACEAE x i Bromus madritensis foxtail chess POACEAE x n Bromus pseudolaevipes woodland brome POACEAE x i Bromus rubens red brome POACEAE x n ❀ Calandrinia menziesii [Calandrinia ciliata] red maids MONTIACEAE x n ❀ Calochortus albus fairy lantern x n ❀ Calochortus argillosus clay mariposa lily LILIACEAE x n ❀ Calochortus clavatus var. clavatus club-haired mariposa lily LILIACEAE 4.3 x n ❀ Calochortus obispoensis San Luis Obispo star-tulip LILIACEAE 1B.2 x n ❀ Calystegia macrostegia subsp. cyclostegia coast morning glory CONVOLVULACEAE x n ❀ Calystegia subacaulis subsp. episcopalis San Luis Obispo morning CONVOLVULACEAE 4.2 x glory, Cambria morning glory n ❀ Cardamine californica milk maids, rain bells, BRASSICACEAE x California toothwort i Cardamine hirsuta hairy bittercress BRASSICACEAE v n Cardamine oligosperma little bittercress BRASSICACEAE v Scientific Name Common Name Family Rare i ❀ Carduus pycnocephalus Italian thistle ASTERACEAE x n Carex nudata torrent sedge CYPERACEAE x n Carex obispoensis San Luis Obispo sedge CYPERACEAE 1B.2 x n Carex serratodens saw-toothed sedge CYPERACEAE x n ❀ Castilleja affinis subsp. affinis coast Indian paintbrush OROBANCHACEAE x n ❀ Castilleja densiflora subsp. obispoensis San Luis Obispo owl's-clover OROBANCHACEAE 1B.2 x n ❀ Ceanothus cuneatus var. ramulosus coast buckbrush RHAMNACEAE x n ❀ Ceanothus papillosus wartleaf ceanothus RHAMNACEAE x n ❀ Ceanothus spinosus greenbark ceanothus RHAMNACEAE x i Cenchrus longisetus feathertop fountaingrass POACEAE x i ❀ Centaurea calcitrapa purple star-thistle ASTERACEAE x i ❀ Centaurea melitensis tocalote, Maltese star thistle ASTERACEAE x i Cerastium glomeratum annual mouse-ear chickweed CARYOPHYLLACEAE x n ❀ Cercocarpus betuloides var. betuloides birch-leaf mountain- ROSACEAE x mahogany i Chasmanthe floribunda South African corn-flag IRIDACEAE x n ❀ Chlorogalum pomeridianum var. common soap plant AGAVACEAE x pomeridianum i ❀ Chondrilla juncea skeleton weed ASTERACEAE x n ❀ Chorizanthe breweri Brewer's spineflower POLYGONACEAE 1B.3 x n ❀ Chorizanthe palmeri Palmer's spineflower POLYGONACEAE 4.2 x i ❀ Cichorium intybus chicory ASTERACEAE x n Cirsium brevistylum Indian thistle ASTERACEAE x n ❀ Cirsium fontinale var. obispoense Chorro Creek bog thistle ASTERACEAE 1B.2 x i ❀ Cirsium vulgare bull thistle ASTERACEAE x Scientific Name Common Name Family Rare n ❀ Clarkia bottae punchbowl clarkia ONAGRACEAE x n ❀ Clarkia unguiculata elegant clarkia ONAGRACEAE x n Claytonia exigua subsp. exigua pale spring beauty MONTIACEAE x n Claytonia parviflora subsp. viridis narrow-leaved miner's lettuce MONTIACEAE ? n ❀ Claytonia perfoliata subsp. perfoliata common miner's lettuce MONTIACEAE x n ❀ Clematis ligusticifolia virgin's bower RANUNCULACEAE x n ❀ Clinopodium douglasii yerba buena LAMIACEAE x n ❀ Collinsia heterophylla common Chinese houses PLANTAGINACEAE x i ❀ Conium maculatum poison hemlock x i ❀ Convolvulus arvensis bindweed, field morning glory CONVOLVULACEAE x n ❀ Cordylanthus rigidus subsp. rigidus thread-leaved bird's-beak OROBANCHACEAE x n ❀ Corethrogyne filaginifolia California-aster ASTERACEAE x n ❀ Cornus sericea subsp. sericea red-osier dogwood CORNACEAE x i Cortaderia jubata jubata grass POACEAE x i Cotoneaster pannosus silverleaf cotoneaster ROSACEAE x n ❀ Crassula connata common pygmyweed CRASSULACEAE x i Crassula tillaea moss pygmyweed CRASSULACEAE x n ❀ Croton setiger turkey-mullein EUPHORBIACEAE x n ❀ Cryptantha clevelandii var. florosa coastal cryptantha BORAGINACEAE x n ❀ Cuscuta subinclusa canyon dodder CONVOLVULACEAE x i Cynodon dactylon Bermuda grass POACEAE x i Cynosurus echinatus dogtail grass POACEAE x n Cyperus eragrostis common umbrella sedge CYPERACEAE x Scientific Name Common Name Family Rare i Cyperus involucratus garden umbrella sedge, CYPERACEAE x umbrella plant i Dactylis glomerata orchard grass POACEAE x n Danthonia californica California oatgrass POACEAE x n Daucus pusillus American wild carrot APIACEAE x n ❀ Delairea odorata cape-ivy ASTERACEAE x n Delphinium californicum subsp. californicum California larkspur RANUNCULACEAE x n ❀ Delphinium parryi subsp. eastwoodiae Eastwood's larkspur RANUNCULACEAE 1B.2 x n Deschampsia danthonioides annual hairgrass POACEAE x n Deschampsia elongata slender hairgrass POACEAE x i Dimorphotheca sinuata Namaqualand-daisy ASTERACEAE x n ❀ Diplacus aurantiacus var. aurantiacus common bush monkeyflower PHRYMACEAE x [Mimulus aurantiacus] i ❀ Dipsacus sativus fuller's teasel DIPSACACEAE x n ❀ Dipterostemon capitatus subsp. capitatus blue-dicks, schoolbells THEMIDACEAE x [Dichelostemma capitatum subsp. capitatum] n Drymocallis glandulosa var. glandulosa sticky cinquefoil ROSACEAE x n Drymocallis glandulosa var. wrangelliana sticky cinquefoil ROSACEAE x n Dryopteris arguta California wood fern DRYOPTERIDACEAE x n ❀ Dudleya abramsii subsp. murina mouse-gray dudleya CRASSULACEAE 1B.3 x n ❀ Dudleya lanceolata lance-leaf dudleya CRASSULACEAE x n ❀ Dudleya pulverulenta chalk dudleya CRASSULACEAE x i Ehrharta calycina common veldtgrass POACEAE x n Elymus condensatus giant wildrye POACEAE x Scientific Name Common Name Family Rare n Elymus glaucus subsp. glaucus blue wildrye POACEAE x n Elymus multisetus big squirreltail POACEAE x n Elymus trachycaulus subsp. trachycaulus slender wildrye POACEAE x n ❀ Epilobium brachycarpum tall willow-herb ONAGRACEAE x n ❀ Epilobium canum subsp. canum California-fuchsia ONAGRACEAE x n ❀ Epilobium ciliatum subsp. ciliatum common willow-herb ONAGRACEAE x n Epilobium minutum chaparral willow-herb ONAGRACEAE x n ❀ Epipactis gigantea stream orchid ORCHIDACEAE x n Equisetum hyemale subsp. affine common scouring-rush EQUISETACEAE x n Equisetum telmateia subsp. braunii giant horsetail EQUISETACEAE x n ❀ Eriogonum elongatum var. elongatum long-stem buckwheat POLYGONACEAE x n ❀ Eriogonum parvifolium coastal buckwheat POLYGONACEAE x n ❀ Eriophyllum confertiflorum var. common golden-yarrow ASTERACEAE x confertiflorum i ❀ Erodium botrys storkbill filaree GERANIACEAE x i ❀ Erodium cicutarium redstem filaree GERANIACEAE x i Erodium moschatum greenstem filaree GERANIACEAE x n ❀ Erythranthe cardinalis [Mimulus cardinalis] scarlet monkeyflower PHRYMACEAE x n ❀ Erythranthe guttata [Mimulus guttatus] common monkeyflower PHRYMACEAE x n ❀ Eschscholzia californica California poppy PAPAVERACEAE x i Eucalyptus globulus blue gum MYRTACEAE x i Euphorbia maculata [Chamaesyce maculata] spotted spurge EUPHORBIACEAE x i ❀ Euphorbia peplus petty spurge EUPHORBIACEAE x n ❀ Euphorbia spathulata warty spurge EUPHORBIACEAE x Scientific Name Common Name Family Rare n Eurybia radulina rough-leaved aster ASTERACEAE x i Festuca arundinacea tall fescue POACEAE x i Festuca bromoides brome fescue POACEAE x n Festuca californica California fescue POACEAE x n Festuca elmeri Elmer's fescue POACEAE x n Festuca microstachys three-weeks fescue, small POACEAE x fescue i Festuca myuros rattail fescue POACEAE x i Festuca perennis ryegrass POACEAE x i Festuca temulenta darnel POACEAE x i ❀ Foeniculum vulgare fennel APIACEAE x n ❀ Frangula californica subsp. californica California coffeeberry RHAMNACEAE x n ❀ affinis checker lily LILIACEAE x n ❀ Fritillaria biflora var. biflora chocolate lily LILIACEAE x n ❀ Ojai fritillary LILIACEAE 1B.2 x n Galium andrewsii prickly bedstraw RUBIACEAE x n Galium andrewsii subsp. andrewsii prickly bedstraw RUBIACEAE x n ❀ Galium aparine cleavers, common bedstraw, RUBIACEAE x goosegrass n Galium californicum subsp. californicum California bedstraw RUBIACEAE x n Galium porrigens var. porrigens climbing bedstraw RUBIACEAE x n ❀ Gamochaeta ustulata Pacific cudweed ASTERACEAE x n ❀ Garrya elliptica coastal silk-tassel bush GARRYACEAE x i Gastridium phleoides nitgrass POACEAE x i ❀ Genista monspessulana French broom FABACEAE x Scientific Name Common Name Family Rare i ❀ Geranium dissectum cut-leaved geranium GERANIACEAE x n ❀ Gilia achilleifolia subsp. achilleifolia California gilia POLEMONIACEAE x n ❀ Grindelia hirsutula California gumplant ASTERACEAE ? i Hainardia cylindrica thintail POACEAE x n Hazardia squarrosa var. grindelioides small-headed sawtooth ASTERACEAE x goldenbush n ❀ Hazardia squarrosa var. squarrosa large-headed sawtooth ASTERACEAE x goldenbush i rhagadioloides Creteweed ASTERACEAE x n ❀ Helenium bigelovii Bigelow's sneezeweed ASTERACEAE x n Helenium puberulum rosilla sneezeweed ASTERACEAE x i ❀ Helminthotheca echioides bristly oxtongue ASTERACEAE x n ❀ Hemizonia congesta subsp. luzulifolia hayfield tarweed ASTERACEAE x n Hesperevax sparsiflora var. sparsiflora erect evax ASTERACEAE x n Hesperolinon micranthum threadstem dwarf flax LINACEAE x n ❀ Hesperoyucca whipplei chaparral yucca AGAVACEAE x i Heteranthemis viscidihirta sand chrysanthemum ASTERACEAE x n ❀ Heteromeles arbutifolia toyon, Christmas berry, ROSACEAE x california-holly n ❀ Heterotheca grandiflora telegraph weed ASTERACEAE x i ❀ Hirschfeldia incana short-pod mustard, perennial BRASSICACEAE x mustard n ❀ Hoita orbicularis round-leaved leatherroot FABACEAE x n ❀ Holodiscus discolor ocean spray, creambush ROSACEAE x n Hordeum brachyantherum subsp. common meadow barley POACEAE x brachyantherum Scientific Name Common Name Family Rare i Hordeum marinum subsp gussoneanum Mediterranean barley POACEAE x i Hordeum murinum subsp. leporinum mouse foxtail barley POACEAE x i ❀ Hypochaeris glabra smooth cat's-ear ASTERACEAE x i ❀ Hypochaeris radicata rough cat's-ear ASTERACEAE x n Isolepis cernua nodding dwarf bulrush, CYPERACEAE x California clubrush n1 Juglans hindsii northern California black JUGLANDACEAE x walnut n Juncus effusus subsp. pacificus Pacific rush JUNCACEAE x n Juncus patens spreading rush JUNCACEAE x n ❀ Keckiella cordifolia red climbing-penstemon PLANTAGINACEAE v n Koeleria macrantha Junegrass POACEAE x i Lactuca saligna slender lettuce ASTERACEAE x i ❀ Lactuca serriola prickly lettuce ASTERACEAE x n ❀ Lagophylla ramosissima common hareleaf ASTERACEAE x n ❀ Lasthenia gracilis common goldfields ASTERACEAE x i Lathyrus latifolius perennial sweet-pea FABACEAE x n ❀ Lathyrus vestitus var. vestitus Pacific sweet-pea FABACEAE x n Lemna minor lesser duckweed ARACEAE x i Leontodon saxatilis lesser hawkbit ASTERACEAE x n ❀ Lepechinia calycina pitcher-sage LAMIACEAE x n ❀ Lepidium nitidum shining peppercress BRASSICACEAE x n Lepidium strictum yellow-green peppercress BRASSICACEAE x n Lepidospartum squamatum scalebroom ASTERACEAE x n ❀ Lilium pardalinum subsp. pardalinum leopard lily LILIACEAE x Scientific Name Common Name Family Rare n Lithophragma affine common woodland star SAXIFRAGACEAE x n ❀ Lithophragma heterophyllum hillside woodland star SAXIFRAGACEAE x i Logfia gallica narrow-leaved herba impia ASTERACEAE x n Lomatium caruifolium var. caruifolium caraway-leaved biscuitroot APIACEAE x n Lomatium dasycarpum subsp. dasycarpum woolly-fruited biscuitroot APIACEAE o n ❀ Lomatium parvifolium small-leaved biscuitroot APIACEAE 4.2 o n ❀ Lonicera hispidula California honeysuckle CAPRIFOLIACEAE x i ❀ Lotus corniculatus bird'sfoot trefoil FABACEAE x n Lupinus bicolor miniature lupine FABACEAE x n ❀ Lupinus hirsutissimus stinging lupine FABACEAE x n Lupinus latifolius var. latifolius broad-leaved lupine FABACEAE x n ❀ Lupinus microcarpus var. densiflorus dense-flowered chick lupine FABACEAE x n ❀ Lupinus succulentus arroyo lupine FABACEAE x i ❀ Lysimachia arvensis [Anagallis arvensis] scarlet pimpernel MYRSINACEAE x n ❀ Lysimachia latifolia [Trientalis latifolia] Pacific starflower MYRSINACEAE x i Lythrum hyssopifolia hyssop loosestrife LYTHRACEAE v n Madia exigua threadstem tarweed ASTERACEAE x n ❀ Madia gracilis slender tarweed ASTERACEAE x n ❀ Madia sativa coast tarweed ASTERACEAE x n ❀ Mahonia pinnata subsp. pinnata coast mahonia BERBERIDACEAE x n Maianthemum stellatum lesser false Solomon's seal RUSCACEAE x n ❀ Marah fabacea manroot, wild cucumber vine CUCURBITACEAE x n ❀ Matricaria discoidea common pineapple-weed ASTERACEAE x i Medicago lupulina black medick FABACEAE x Scientific Name Common Name Family Rare i Medicago polymorpha California bur-clover FABACEAE x n Melica imperfecta little melic POACEAE x n Melica torreyana Torrey's melic POACEAE x i ❀ Melilotus indicus annual sweet-clover FABACEAE x i Mentha suaveolens applemint LAMIACEAE x n ❀ Micranthes californica California saxifrage SAXIFRAGACEAE x n Microseris douglasii subsp. douglasii Douglas's microseris ASTERACEAE x n ❀ Monardella palmeri Palmer's monardella LAMIACEAE 1B.2 x n ❀ Monardella villosa subsp. obispoensis Obispo coyote-mint LAMIACEAE x i Myoporum laetum common ngaio SCROPHULARIACEAE x n Navarretia mellita honey-scented pincushion POLEMONIACEAE x plant n Oemleria cerasiformis osoberry ROSACEAE x n Osmorhiza berteroi mountain sweet cicely APIACEAE x i ❀ Oxalis pes-caprae Bermuda-buttercup OXALIDACEAE x n ❀ Paeonia californica California peony PAEONIACEAE x i Papaver somniferum opium poppy PAPAVERACEAE x n Pellaea andromedifolia coffee fern PTERIDACEAE x n Pentagramma triangularis subsp. triangularis goldback fern PTERIDACEAE x n Perideridia kelloggii Kellogg's yampah APIACEAE x n ❀ Phacelia distans fern-leaved phacelia HYDROPHYLLACEAE x n ❀ Phacelia imbricata subsp. imbricata wide-sepaled rock phacelia HYDROPHYLLACEAE ? i Phalaris aquatica harding grass POACEAE x n Phalaris californica California canarygrass POACEAE x Scientific Name Common Name Family Rare i Phoenix canariensis Canary Island date palm ARECACEAE x n ❀ Pickeringia var. montana chaparral pea FABACEAE x n Pinus coulteri Coulter pine, big-cone pine PINACEAE x n ❀ Plagiobothrys nothofulvus common popcorn flower, BORAGINACEAE x rusty popcorn flower n ❀ Plantago erecta foothill plantain PLANTAGINACEAE x i ❀ Plantago lanceolata English plantain PLANTAGINACEAE x n Platanus racemosa California sycamore PLATANACEAE x n ❀ Platystemon californicus cream cups PAPAVERACEAE x n Plectritis congesta subsp. brachystemon short-spurred seablush VALERIANACEAE x i Poa annua annual bluegrass POACEAE x n ❀ Pogogyne douglasii Douglas's mesamint LAMIACEAE x n Pogogyne serpylloides thyme-leaved mesamint LAMIACEAE x i Polycarpon tetraphyllum four-leaved allseed CARYOPHYLLACEAE x i Polygonum aviculare common knotweed POLYGONACEAE x i Polygonum aviculare subsp. aviculare common knotweed POLYGONACEAE x n Polypodium californicum California polypody POLYPODIACEAE x n Polypodium calirhiza nested polypody POLYPODIACEAE x i Polypogon interruptus ditch beardgrass POACEAE x i Polypogon monspeliensis rabbitfoot grass POACEAE x i Polypogon viridis water beardgrass POACEAE x n Populus fremontii subsp. fremontii Fremont cottonwood SALICACEAE x n Populus trichocarpa black cottonwood SALICACEAE x i Poterium sanguisorba var. polygamum garden-burnet ROSACEAE x Scientific Name Common Name Family Rare n Primula clevelandii var. insulare Cleveland's shooting star PRIMULACEAE x [Dodecatheon clevelandii subsp. insulare] n ❀ Prunus ilicifolia var. ilicifolia holly-leaved cherry ROSACEAE x n Pseudognaphalium biolettii bicolored everlasting ASTERACEAE x n ❀ Pseudognaphalium californicum California everlasting ASTERACEAE x i Pseudognaphalium luteoalbum Jersey cudweed ASTERACEAE x n Pseudognaphalium ramosissimum pink everlasting ASTERACEAE x n Psilocarphus tenellus slender woollyheads ASTERACEAE x n Pteridium aquilinum var. pubescens bracken fern DENNSTAEDTIACEAE x n Pterostegia drymarioides notchleaf POLYGONACEAE x n Quercus agrifolia var. agrifolia coast live oak FAGACEAE x n Quercus durata var. durata leather oak FAGACEAE x n ❀ Ranunculus californicus California buttercup RANUNCULACEAE x n Rhamnus crocea spiny redberry RHAMNACEAE x n Ribes malvaceum var. indecorum white-flowered chaparral GROSSULARIACEAE x currant n ❀ Ribes malvaceum var. malvaceum common chaparral currant GROSSULARIACEAE x n ❀ Ribes menziesii var. menziesii canyon gooseberry GROSSULARIACEAE x n ❀ Ribes sanguineum var. glutinosum pink-flowered currant GROSSULARIACEAE x n ❀ Ribes speciosum fuchsia-flowered gooseberry GROSSULARIACEAE x n Rosa californica California wild rose ROSACEAE x n ❀ Rosa spithamea coast ground rose ROSACEAE x n ❀ Rubus ursinus California blackberry ROSACEAE x i Rumex acetosella sour dock, sheep-sorrel POLYGONACEAE x i Rumex conglomeratus knotted dock POLYGONACEAE x Scientific Name Common Name Family Rare i ❀ Rumex crispus curly dock POLYGONACEAE x i Rumex pulcher fiddle dock POLYGONACEAE x n Rupertia physodes California-tea FABACEAE x n Sabulina douglasii [Minuartia douglasii] Douglas's sandwort CARYOPHYLLACEAE x n Salix breweri serpentine willow, Brewer's SALICACEAE x willow n Salix lasiandra var. lasiandra Pacific willow SALICACEAE x n Salix lasiolepis arroyo willow, California SALICACEAE x pussywillow n ❀ Salvia columbariae chia LAMIACEAE x n ❀ Salvia mellifera black sage LAMIACEAE x n ❀ Salvia spathacea hummingbird sage LAMIACEAE x n ❀ Sambucus nigra subsp. caerulea blue elderberry ADOXACEAE x n ❀ arguta sharp-toothed sanicle APIACEAE x n Sanicula crassicaulis common sanicle APIACEAE x n Sanicula hoffmannii Hoffmann's sanicle APIACEAE 4.3 x n Sanicula laciniata coast sanicle APIACEAE x i Scandix pecten-veneris shepherd's needle APIACEAE x n ❀ Scrophularia californica subsp. californica California figwort SCROPHULARIACEAE x n Scrophularia californica subsp. floribunda California figwort SCROPHULARIACEAE x i Senecio vulgaris common groundsel ASTERACEAE x n ❀ Sidalcea malviflora subsp. laciniata geranium-leaved MALVACEAE x checkerbloom i ❀ Silene gallica windmill pink CARYOPHYLLACEAE x n ❀ Silene laciniata subsp. laciniata Indian pink, Mexican pink CARYOPHYLLACEAE x Scientific Name Common Name Family Rare i ❀ Silybum marianum milk thistle ASTERACEAE x n ❀ Sisyrinchium bellum blue-eyed-grass IRIDACEAE x n ❀ Solanum douglasii Douglas' nightshade SOLANACEAE x n ❀ Solanum umbelliferum var. xanti chaparral purple nightshade SOLANACEAE x n ❀ Solidago velutina subsp. californica California goldenrod ASTERACEAE x i Soliva sessilis field burweed ASTERACEAE x i Sonchus asper subsp. asper prickly sow-thistle ASTERACEAE x i ❀ Sonchus oleraceus common sow-thistle ASTERACEAE x i Sorghum bicolor sorghum POACEAE x i Spergula arvensis corn spurrey CARYOPHYLLACEAE x i ❀ Spergularia rubra common sand-spurrey, red CARYOPHYLLACEAE x sand-spurrey n ❀ Stachys bullata coast hedge-nettle LAMIACEAE x n Stachys pycnantha short-spiked hedge-nettle LAMIACEAE x n ❀ Stebbinsoseris heterocarpa brownpuffs ASTERACEAE x i Stellaria media common chickweed CARYOPHYLLACEAE x n Stellaria nitens shining chickweed CARYOPHYLLACEAE o n ❀ Stephanomeria cichoriacea silver rock-lettuce ASTERACEAE x n Stephanomeria elata Santa Barbara wire-lettuce ASTERACEAE x n Stephanomeria exigua subsp. carotifera Hoover's wire-lettuce ASTERACEAE x n Stipa lepida foothill needlegrass POACEAE x i Stipa miliacea var. miliacea smilo POACEAE x n Stipa pulchra purple needlegrass POACEAE x n ❀ Streptanthus glandulosus subsp. beautiful jewel-flower BRASSICACEAE x glandulosus Scientific Name Common Name Family Rare n Streptanthus lasiophyllus California mustard BRASSICACEAE x n Symphoricarpos albus var. laevigatus common snowberry CAPRIFOLIACEAE x n ❀ Symphoricarpos mollis creeping snowberry CAPRIFOLIACEAE x n ❀ Symphyotrichum chilense Pacific-aster ASTERACEAE ? n Symphyotrichum subspicatum Douglas's-aster ASTERACEAE ? i Tanacetum parthenium feverfew ASTERACEAE x i dandelion ASTERACEAE x n ❀ Thalictrum fendleri var. polycarpum tall meadow-rue RANUNCULACEAE x n ❀ Thermopsis californica var. californica California false-lupine FABACEAE x i Torilis arvensis common hedge-parsley APIACEAE x i Torilis nodosa knotted hedge-parsley APIACEAE x n ❀ Toxicodendron diversilobum poison-oak ANACARDIACEAE x n ❀ Toxicoscordion fremontii Fremont's death-camas, star- MELANTHIACEAE x zigadene i ❀ Tragopogon porrifolius salsify, purple goat's-beard ASTERACEAE x n Trifolium bifidum var. decipiens pinole clover FABACEAE x n ❀ Trifolium depauperatum var. truncatum truncate sac clover FABACEAE x n ❀ Trifolium fucatum bull clover FABACEAE x i ❀ Trifolium hirtum rose clover FABACEAE x n Trifolium microcephalum miniature clover FABACEAE x n ❀ Trifolium willdenovii tomcat clover FABACEAE x n ❀ Triphysaria eriantha subsp. eriantha butter and eggs, common OROBANCHACEAE x Johnny-Tuck n Trisetum canescens silvery oat-grass, tall false- POACEAE x oats Scientific Name Common Name Family Rare n Turritis glabra tower mustard BRASSICACEAE x n Typha domingensis southern cattail TYPHACEAE x n Umbellularia californica California laurel, California LAURACEAE x bay n ❀ Uropappus lindleyi silverpuffs ASTERACEAE x n ❀ Verbena lasiostachys var. lasiostachys western vervain VERBENACEAE x n Vicia americana subsp. americana American vetch FABACEAE x i ❀ Vicia sativa subsp. sativa common vetch FABACEAE x i ❀ Vicia villosa subsp. varia narrow-leaved vetch FABACEAE x i Vinca major greater periwinkle APOCYNACEAE x n ❀ Viola pedunculata Johnny jump-up, wild pansy VIOLACEAE x n Woodwardia fimbriata giant chain fern BLECHNACEAE x n ❀ Zeltnera davyi Davy's centaury GENTIANACEAE x