Santa Monica Mountains Wildflowers

Scientific NameCommon NameFormer Name
Abronia maritima Red sand verbena
Abronia umbellata Sand verbena
Abronia umbellata Sand verbena (white)
Acacia baileyana Bailey's acacia
Acacia cyclops Coastal wattle
Acacia dealbata Silver wattle
Acacia longifolia Golden wattle
Acacia melanoxylon Blackwood acacia (flower head)
Acacia melanoxylon Blackwood acacia (leaf)
Acacia redolens Spreading acacia
Acacia retinodes Ever-blooming acacia
Acacia saligna Golden wreath wattle
Acer macrophyllum Big-leaf maple (leaf)
Acer negundo Box elder
Acer negundo Box elder (flowers)
Acer negundo Box elder (fruit)
Acer negundo Box elder (leaves)
Achillea millefolium Yarrow
Achyrachaena mollis Blow wives
Achyrachaena mollis Blow wives (in fruit)
Acmispon americanus Spanish clover Lotus purshianus
Acmispon argophyllus var. argophyllus Silver lotus Lotus argophyllus var. argophyllus
Acmispon glaber Deerweed Lotus scoparius
Acmispon glaber Deerweed (flowers) Lotus scoparius
Acmispon grandiflorus Large-flowered lotus Lotus grandiflorus
Acmispon maritimus Coastal lotus Lotus salsuginosus
Acmispon micranthus San Diego bird's-foot trefoil Lotus hamatus
Acmispon strigosus Strigose lotus Lotus strigosus
Acmispon wrangelianus Chile lotus Lotus wrangelianus
Acourtia microcephala Perezia
Acourtia microcephala Perezia (white)
Acroptilon repens Russian knapweed
Adenostoma fasciculatum var. fasciculatum Chamise
Adenostoma sparsifolium Red shanks
Adenostoma sparsifolium Red shanks (flowers)
Adiantum capillus-veneris Venus-hair fern
Adiantum jordanii Maiden-hair fern
Agave americana American century plant
Agave americana American century plant (leaves)
Ageratina adenophora Eupatory
Agoseris grandiflora Mountain dandelion
Agoseris grandiflora Mountain dandelion (in fruit)
Agrostis gigantea Redtop
Agrostis pallens Dune bent grass
Ailanthus altissima Tree of heaven
Alisma triviale Water plantain Alisma plantago-aquatica
Allium haematochiton Red-skinned onion
Allium neapolitanum White garlic
Allium neapolitanum White garlic (flowers)
Allium peninsulare Peninsular onion
Allium peninsulare Peninsular onion (white)
Allium praecox Early onion
Allium triquetrum Three-cornered onion
Allophyllum glutinosum False gilia
Alnus rhombifolia White alder
Amaranthus albus Tumbleweed
Amaranthus californicus California pigweed
Amaranthus retroflexus Rough pigweed
Amaryllis belladonna Naked ladies
Amblyopappus pusillus Coast weed
Ambrosia acanthicarpa Bur sage
Ambrosia acanthicarpa Bur sage (inflorescence)
Ambrosia acanthicarpa Bur sage (leaf)
Ambrosia chamissonis Silver beach-bur
Ambrosia confertiflora Slender ragweed
Ambrosia psilostachya Western ragweed
Ambrosia psilostachya Western ragweed (inflorescence)
Ammannia coccinea Red ammannia
Ammannia coccinea Red ammannia (flower)
Ammophila arenaria European beachgrass
Amorpha californica False indigo
Amsinckia intermedia Fiddleneck Amsinckia menziesii var. intermedia
Amsinckia menziesii Fiddleneck Amsinckia menziesii var. menziesii
Ancistrocarphus filagineus Woolly fishhooks
Anemopsis californica Yerba mansa
Anthemis cotula Mayweed
Anthriscus caucalis Bur chervil
Antirrhinum coulterianum White snapdragon
Antirrhinum kelloggii Twining snapdragon
Antirrhinum multiflorum Rose snapdragon
Antirrhinum nuttallianum Violet snapdragon (maroon)
Antirrhinum nuttallianum? Violet snapdragon? (blue)
Aphanes occidentalis Lady's mantle
Apiastrum angustifolium Wild parsley
Apium graveolens Celery
Apocynum cannabinum Indian hemp
Aptenia cordifolia Hearts and flowers
Arabidopsis thaliana Mouse-ear cress
Araujia sericifera White bladderflower
Araujia sericifera White bladderflower (fruit)
Arctostaphylos glandulosa Eastwood manzanita
Arctostaphylos glauca Big-berry manzanita
Arctostaphylos glauca Big-berry manzanita (berries)
Arctotheca calendula Capeweed
Argemone munita Prickly poppy
Artemisia biennis Biennial wormwood
Artemisia californica California sagebrush
Artemisia californica California sagebrush (bluish)
Artemisia douglasiana Mugwort
Artemisia dracunculus Tarragon
Artemisia dracunculus Tarragon (flowers)
Artemisia tridentata Great Basin sagebrush
Artemisia tridentata Great Basin sagebrush (leaves)
Arthrocnemum subterminale? Parish's pickleweed?
Arundo donax Giant reed
Asclepias californica California milkweed
Asclepias curassavica Scarlet milkweed
Asclepias eriocarpa Indian milkweed
Asclepias fascicularis Narrow-leaved milkweed
Asparagus asparagoides Bridal creeper
Asphodelus fistulosus Asphodel
Aspidotis californica California lace fern
Astragalus brauntonii Braunton's milkvetch
Astragalus brauntonii Braunton's milkvetch (flowers)
Astragalus didymocarpus Dwarf astragalus
Astragalus gambelianus Gambel's dwarf milkvetch
Astragalus trichopodus var. lonchus Southern California locoweed
Astragalus trichopodus var. phoxus Santa Barbara locoweed
Athysanus pusillus Sandweed
Athysanus pusillus Sandweed (fruit)
Atriplex amnicola Swamp saltbush
Atriplex canescens Four-wing saltbush
Atriplex canescens Four-wing saltbush (bracts)
Atriplex lentiformis Quail bush
Atriplex leucophylla Beach saltbush
Atriplex prostrata Spearscale Atriplex triangularis
Atriplex semibaccata Australian saltbush
Atriplex serenana Bractscale
Atriplex suberecta Peregrine saltbush
Avena barbata Slender oats
Avena fatua Wild oats
Baccharis glutinosa Marsh baccharis (female) Baccharis douglasii
Baccharis glutinosa Marsh baccharis (male) Baccharis douglasii
Baccharis malibuensis Malibu baccharis (female)
Baccharis malibuensis Malibu baccharis (male)
Baccharis pilularis Coyote brush (female)
Baccharis pilularis Coyote brush (male)
Baccharis plummerae Plummer's baccharis (female)
Baccharis plummerae Plummer's baccharis (male)
Baccharis salicifolia Mule fat (female)
Baccharis salicifolia Mule fat (male)
Baccharis sarothroides Broom baccharis (female)
Baccharis sarothroides Broom baccharis (male)
Baccharis sarothroides Xpilularis Centennial coyote brush
Baccharis sarothroides Xpilularis Centennial coyote brush (inflorescence)
Barbarea orthoceras Winter cress
Bassia hyssopifolia Fivehook bassia
Bassia hyssopifolia Fivehook bassia (flower)
Bellis perennis English daisy
Berberis nevinii Nevin's barberry
Berberis pinnata California barberry
Berula erecta Water parsnip
Bidens frondosa Stick-tight
Bidens frondosa Stick-tight (inflorescence)
Bidens laevis Bur marigold
Bidens pilosa Beggar-ticks
Bidens pilosa Beggar-ticks (fruit)
Bidens pilosa Beggar-ticks (with rays)
Bituminaria bituminosa Arabian pea
Bloomeria crocea Golden stars
Boechera sparsiflora Elegant rock cress Arabis sparsiflora
Bolboschoenus maritimus ssp. paludosus Alkali bulrush Scirpus maritimus
Bothriochloa barbinodis Cane bluestem
Bowlesia incana Bowlesia
Bowlesia incana Bowlesia (leaf)
Boykinia occidentalis Coast boykinia
Boykinia rotundifolia Round-leaved boykinia
Boykinia rotundifolia Round-leaved boykinia (leaves)
Brachypodium distachyon Purple false brome
Brassica nigra Black mustard
Brassica nigra Black mustard (flowers)
Brassica rapa Field mustard
Brassica tournefortii Saharan mustard
Brassica tournefortii Saharan mustard (leaves)
Brickellia californica California Brickellbush
Brickellia nevinii Nevin's brickellbush
Briza minor Little rattlesnake grass
Brodiaea terrestris Dwarf brodiaea
Bromus catharticus Rescue grass
Bromus diandrus Ripgut brome
Bromus hordeaceus Soft chess
Bromus madritensis ssp. madritensis Foxtail brome
Bromus madritensis ssp. rubens Red brome
Bromus tectorum Cheat grass
Buddleja saligna Butterfly bush
Caesalpinia gilliesii Bird of paradise
Cakile maritima Sea rocket
Calandrinia breweri Brewer's redmaids
Calandrinia menziesii Redmaids Calandrinia ciliata
Calandrinia menziesii Redmaids (white) Calandrinia ciliata
Calendula officinalis? Pot marigold?
California macrophylla White-flowered filaree Erodium macrophyllum
California macrophylla White-flowered filaree (leaves/fruit) Erodium macrophyllum
Calocedrus decurrens Incense cedar
Calocedrus decurrens Incense cedar (seed cones)
Calochortus albus Fairy lantern
Calochortus catalinae Catalina mariposa
Calochortus clavatus var. gracilis Slender mariposa
Calochortus clavatus var. pallidus Yellow mariposa
Calochortus plummerae Plummer's mariposa
Calochortus splendens Lilac mariposa
Calochortus venustus Butterfly mariposa
Calochortus weedii var. intermedius Weed's mariposa
Calodendrum capense Cape chestnut
Calyptridium monandrum Sand cress
Calystegia collina ssp. venusta South Coast morning glory
Calystegia macrostegia ssp. cyclostegia Morning glory
Calystegia macrostegia ssp. intermedia Morning glory
Calystegia purpurata Purple western morning glory
Calystegia soldanella Beach morning glory
Camissonia strigulosa Contorted evening primrose
Camissoniopsis bistorta Suncup Camissonia bistorta
Camissoniopsis cheiranthifolia Beach evening primrose Camissonia cheiranthifolia
Camissoniopsis micrantha Small evening primrose Camissonia micrantha
Capsella bursa-pastoris Shepherd's purse
Cardamine californica Milkmaids
Cardamine oligosperma Bitter cress
Cardamine oligosperma Bitter cress (flowers)
Carduus pycnocephalus Italian thistle
Carex globosa? Round-fruit sedge?
Carex praegracilis Field sedge
Carex senta Rough sedge
Carex senta Rough sedge (inflorescence)
Carex spissa San Diego sedge (fruit)
Carpobrotus chilensis Sea fig
Carpobrotus edulis Hottentot fig
Carthamus tinctorius Safflower
Castilleja affinis Paintbrush
Castilleja affinis Paintbrush (yellow)
Castilleja exserta Owl's clover
Castilleja exserta Owl's clover (white)
Castilleja foliolosa Woolly paintbrush
Castilleja minor Thread torch
Caulanthus heterophyllus Jewel flower (yellow)
Caulanthus lasiophyllus California mustard Guillenia lasiophylla
Ceanothus crassifolius Hoary-leaved ceanothus
Ceanothus crassifolius Hoary-leaved ceanothus (flowers)
Ceanothus cuneatus var. cuneatus Buck brush
Ceanothus leucodermis White thorn
Ceanothus megacarpus Big-pod ceanothus
Ceanothus oliganthus Hairy-leaved ceanothus
Ceanothus spinosus Greenbark ceanothus
Centaurea melitensis Yellow star thistle
Centaurea solstitialis Barnaby's thistle
Centranthus ruber Red valerian
Centromadia parryi ssp. australis Southern tarweed Hemizonia parryi ssp. australis
Centromadia pungens ssp. pungens Common spikeweed Hemizonia pungens ssp. pungens
Cerastium fontanum? Common chickweed?
Cerastium glomeratum Mouse-eared chickweed
Cerastium glomeratum Mouse-eared chickweed (unopened)
Cercis occidentalis Western redbud
Cercis occidentalis Western redbud (flowers)
Cercocarpus betuloides Mountain mahogany
Cercocarpus betuloides Mountain mahogany (fruit)
Chaenactis artemisiifolia White pincushion flower
Chaenactis glabriuscula Yellow pincushion flower
Chamaebatia australis Southern mountain misery
Chasmanthe floribunda African cornflag
Chenopodium album Lamb's quarter
Chenopodium berlandieri Berlandier's goosefoot
Chenopodium californicum California goosefoot
Chenopodium macrospermum Coast goosefoot
Chenopodium murale Nettle-leaf goosefoot
Chlorogalum pomeridianum Soap plant
Chlorogalum pomeridianum Soap plant (leaves)
Chlorogalum pomeridianum Soap plant (root)
Chloropyron maritimum Salt-marsh bird's beak Cordylanthus maritimus
Chondrilla juncea Skeleton weed
Chorizanthe parryi var. fernandina San Fernando Valley spineflower
Chorizanthe parryi var. fernandina San Fernando Valley spineflower (flowers)
Chorizanthe staticoides Turkish rugging
Chorizanthe staticoides Turkish rugging (leaves)
Cichorium intybus Chicory
Cirsium occidentale var. californicum California thistle
Cirsium occidentale var. californicum California thistle (white)
Cirsium occidentale var. occidentale Cobweb thistle
Cirsium occidentale var. occidentale Cobweb thistle (inflorescence)
Cirsium vulgare Bull thistle
Cistanthe maritima Seaside redmaids Calandrinia maritima
Cistanthe maritima Seaside redmaids (flower) Calandrinia maritima
Cistus Xpurpureus Orchid rock rose
Cistus incanus Pink rockrose Cistus creticus
Cistus ladanifer Crimson-spot rockrose
Cistus ladanifer Crimson-spot rockrose (leaves)
Clarkia bottae Farewell to spring
Clarkia bottae Farewell to spring (white)
Clarkia cylindrica Speckled clarkia
Clarkia epilobioides Willow-herb clarkia
Clarkia purpurea ssp. quadrivulnera Purple clarkia (spotted)
Clarkia purpurea ssp. quadrivulnera Winecup clarkia (dark)
Clarkia purpurea ssp. viminea Purple clarkia
Clarkia unguiculata Elegant clarkia
Clarkia unguiculata Elegant clarkia (white)
Claytonia exigua Little spring beauty
Claytonia gypsophiloides Gypsum spring beauty
Claytonia parviflora ssp. parviflora Narrow-leaved miner's lettuce
Claytonia parviflora ssp. viridis Green miner's lettuce
Claytonia perfoliata Miner's lettuce
Claytonia perfoliata Miner's lettuce (flower)
Clematis lasiantha Virgin's bower
Clematis lasiantha Virgin's bower (in fruit)
Clematis ligusticifolia Western virgin's bower
Clinopodium douglasii Yerba buena Satureja douglasii
Collinsia heterophylla Chinese houses
Collinsia heterophylla Chinese houses (white)
Collinsia parryi Parry's blue-eyed Mary
Comarostaphylis diversifolia Summer holly
Comarostaphylis diversifolia Summer holly (fruit)
Conium maculatum Poison hemlock
Conium maculatum Poison hemlock (flowers)
Convolvulus arvensis Bindweed
Convolvulus simulans Small-flowered morning glory
Cordylanthus rigidus ssp. setigerus Bird's beak
Corethrogyne filaginifolia Cudweed aster Lessingia filaginifolia
Corethrogyne filaginifolia Cudweed aster (purple and white) Lessingia filaginifolia
Cortaderia selloana Pampas grass
Cosmos bipinnatus Cosmos
Cotoneaster pannosus Woolly cotoneaster Cotoneaster pannosa
Cotula australis Australian brass buttons
Cotula coronopifolia Brass buttons
Crassula connata Pygmy weed
Crassula ovata Jade plant
Cressa truxillensis Alkali weed
Crocanthemum scoparium Rock rose Helianthemum scoparium
Croton californicus Croton
Croton setiger Dove weed Eremocarpus setigerus
Crypsis schoenoides Swamp grass
Cryptantha clevelandii Forget-me-not
Cryptantha intermedia Large-flowered popcorn flower
Cryptantha micromeres Small-flowered popcorn flower
Cryptantha microstachys Tejon cryptantha
Cryptantha muricata Popcorn flower
Cucurbita foetidissima Coyote melon
Cuscuta californica Dodder (flower)
Cuscuta pacifica Dodder (flowers) Cuscuta salina
Cuscuta sp. Dodder
Cuscuta subinclusa Dodder
Cyclospermum leptophyllum Marsh parsley Ciclospermum leptophyllum
Cyclospermum leptophyllum Marsh parsley (fruit) Ciclospermum leptophyllum
Cylindropuntia californica var. parkeri Valley cholla Opuntia parryi
Cylindropuntia prolifera Coast cholla Opuntia prolifera
Cylindropuntia prolifera Coast cholla (flower) Opuntia prolifera
Cynara cardunculus Artichoke thistle
Cynara cardunculus Artichoke thistle (leaves)
Cynodon dactylon Bermuda grass
Cynosurus echinatus Hedgehog dogtail
Cyperus eragrostis Tall umbrella sedge
Cyperus esculentus Yellow nutsedge
Cyperus involucratus Umbrella plant
Dactylis glomerata Orchard grass
Datisca glomerata Durango root
Datisca glomerata Durango root (flower)
Datura wrightii Jimson weed
Datura wrightii Jimson weed (fruit)
Daucus carota Queen Anne's lace
Daucus pusillus Wild carrot
Deinandra fasciculata Common tarweed Hemizonia fasciculata
Deinandra minthornii Santa Susanna tarweed Hemizonia minthornii
Deinandra minthornii Santa Susanna tarweed (flowers) Hemizonia minthornii
Delairea odorata Cape ivy Senecio mikanioides
Delosperma litorale Seaside delosperma
Delphinium cardinale Scarlet larkspur
Delphinium cardinale Scarlet larkspur (yellow)
Delphinium parryi ssp. maritimum Seaside larkspur
Delphinium parryi ssp. parryi Parry's larkspur
Delphinium patens Spreading larkspur
Delphinium patens Spreading larkspur (pale)
Dendromecon rigida Bush poppy
Descurainia pinnata Tansy mustard
Dichelostemma capitatum Blue dicks
Dichondra occidentalis Western dichondra
Dichondra occidentalis Western dichondra (leaves)
Dimorphotheca ecklonis African daisy Osteospermum ecklonis
Dimorphotheca ecklonis African daisy (violet) Osteospermum ecklonis
Dimorphotheca fruticosa Freeway daisy Osteospermum fruticosum
Dimorphotheca sinuata Cape marigold
Dipsacus fullonum Wild teasel
Distichlis spicata Salt grass
Draba cuneifolia Wedge-leaf draba
Drymocallis glandulosa Sticky cinquefoil Potentilla glandulosa
Dryopteris arguta Coastal wood-fern
Dryopteris arguta Coastal wood-fern (underleaf)
Duchesnea indica Mock strawberry
Duchesnea indica Mock strawberry (fruit)
Dudleya blochmaniae Blochman's live-forever
Dudleya caespitosa Coast dudleya
Dudleya cymosa ssp. agourensis Agoura Hills dudleya
Dudleya cymosa ssp. cymosa Canyon dudleya
Dudleya cymosa ssp. marcescens? Marcescent dudleya?
Dudleya cymosa ssp. ovatifolia Santa Monica Mountains dudleya
Dudleya lanceolata Lance-leaf dudleya
Dudleya lanceolata Lance-leaf dudleya (yellow)
Dudleya palmeri Palmer's liveforever
Dudleya parva Conejo dudleya Dudleya abramsii ssp. parva
Dudleya pulverulenta Chalk live-forever
Dudleya pulverulenta Chalk live-forever (flowers)
Dudleya verityi Verity's dudleya
Dysphania ambrosioides Mexican tea Chenopodium ambrosioides
Echinochloa crus-galli Barnyard grass
Echinodorus berteroi Burhead
Echium candicans Pride of Madeira
Eclipta prostrata False daisy
Ehrendorferia ochroleuca Bleeding heart Dicentra ochroleuca
Ehrendorferia ochroleuca Bleeding heart (flowers) Dicentra ochroleuca
Ehrharta erecta Panic veldt grass
Eleocharis parishii Parish's spike-rush
Eleocharis parishii^ Parish's spike-rush (inflorescence)
Elymus condensatus Giant rye grass Leymus condensatus
Elymus glaucus Blue wild rye
Elymus glaucus Blue wild rye (inflorescence)
Elymus triticoides Creeping wild rye Leymus triticoides
Elymus triticoides Creeping wild rye (inflorescence) Leymus triticoides
Emmenanthe penduliflora Whispering bells
Emmenanthe penduliflora Whispering bells (flower)
Encelia californica California sunflower
Encelia californica California sunflower (flower)
Encelia farinosa Brittlebush
Epilobium brachycarpum Willow-herb
Epilobium canum ssp. canum California fuschia
Epilobium canum ssp. latifolium California fuschia
Epilobium ciliatum ssp. ciliatum Slender willow-herb
Epipactis gigantea Stream orchid
Equisetum hyemale Giant scouring rush
Equisetum laevigatum Smooth scouring rush
Equisetum telmateia Giant horsetail (sterile stem)
Eremothera boothii ssp. decorticans Bottle washer Camissonia boothii ssp. decorticans
Eriastrum densifolium ssp. elongatum Perennial woolstar
Eriastrum sapphirinum Sapphire woolstar
Ericameria arborescens Golden fleece
Ericameria ericoides Mock heather
Ericameria linearifolia Narrow-leaved goldenbush
Ericameria linearifolia Narrow-leaved goldenbush (flower)
Ericameria palmeri Palmer's goldenbush
Ericameria palmeri Palmer's goldenbush (flowers)
Ericameria pinifolia Pine goldenbush
Ericameria pinifolia Pine goldenbush (flowers)
Erigeron bonariensis Little horseweed Conyza bonariensis
Erigeron canadensis Tall horseweed Conyza canadensis
Erigeron foliosus Fleabane aster
Eriodictyon crassifolium Yerba santa
Eriogonum angulosum Angle-stemmed buckwheat
Eriogonum cinereum Ashy-leaved buckwheat
Eriogonum cithariforme Cithara buckwheat
Eriogonum cithariforme Cithara buckwheat (flowers)
Eriogonum crocatum Conejo buckwheat
Eriogonum elongatum Long-stemmed buckwheat
Eriogonum fasciculatum California buckwheat
Eriogonum giganteum St. Catherine's lace
Eriogonum gracile Slender buckwheat
Eriogonum parvifolium Sea-cliff buckwheat
Eriogonum wrightii var. membranaceum Wright's buckwheat
Eriophyllum confertiflorum Golden yarrow
Erodium botrys Long-beaked filaree
Erodium brachycarpum? Short-fruited filaree?
Erodium cicutarium Red-stemmed filaree
Erodium moschatum White-stemmed filaree
Erodium moschatum White-stemmed filaree (white)
Erysimum capitatum Western wallflower
Erysimum suffrutescens Dune wallflower Erysimum insulare ssp. suffrutescens
Eschscholzia caespitosa Collarless poppy
Eschscholzia californica California poppy
Eucalyptus camaldulensis Red gum
Eucalyptus globulus Blue gum
Eucalyptus sideroxylon? Red iron bark?
Eucrypta chrysanthemifolia Common eucrypta
Eulobus californicus California suncup Camissonia californica
Eulobus californicus California suncup (white) Camissonia californica
Euphorbia albomarginata Rattlesnake weed Chamaesyce albomarginata
Euphorbia characias? Mediterranean spurge?
Euphorbia characias? Mediterranean spurge? (inflorescence)
Euphorbia lathyris Gopher plant
Euphorbia lathyris Gopher plant (fruit)
Euphorbia maculata Spotted spurge Chamaesyce maculata
Euphorbia peplus Petty spurge
Euphorbia polycarpa Small-seeded spurge Chamaesyce polycarpa
Euphorbia serpyllifolia Thyme-leafed spurge Chamaesyce serpyllifolia
Euphorbia spathulata Warty spurge
Euphorbia spathulata Warty spurge (fruit)
Euphorbia terracina False caper
Euthamia occidentalis Western goldenrod
Festuca arundinacea Tall fescue
Festuca microstachys Small fescue Vulpia microstachys
Festuca myuros Rat-tail fescue Vulpia myuros
Festuca perennis Italian ryegrass Lolium perenne
Ficus carica Common fig
Ficus carica Common fig (leaves/inflorescence)
Foeniculum vulgare Fennel
Frangula californica ssp. californica Coffeeberry Rhamnus californica
Frangula californica ssp. californica Coffeeberry (berries) Rhamnus californica
Frangula californica ssp. tomentella? Hoary coffeeberry? Rhamnus tomentella ssp. tomentella?
Frankenia salina Alkali heath
Fraxinus dipetala Chaparral flowering ash (flower)
Fraxinus dipetala Chaparral flowering ash (flowers)
Fraxinus dipetala Chaparral flowering ash (fruit)
Fraxinus uhdei Shamel ash (male)
Fraxinus uhdei? Shamel ash? (fruit)
Fraxinus velutina Arizona ash (leaves)
Fraxinus velutina Arizona ash (male flowers)
Fritillaria biflora Chocolate lily
Funastrum cynanchoides Climbing milkweed Sarcostemma cynanchoides
Gaillardia sp. Indian blanket
Galenia pubescens Coastal galenia
Galium andrewsii Pine mat
Galium angustifolium Narrow-leaved bedstraw
Galium aparine Common bedstraw
Galium nuttallii Climbing bedstraw
Gambelia speciosa Island bush snapdragon Galvezia speciosa
Garrya veatchii Silk tassel bush
Gastridium phleoides^ Nit grass Gastridium ventricosum
Gazania linearis Gazania
Genista monspessulana French broom
Geranium carolinianum Carolina geranium
Geranium dissectum Cut-leaf geranium
Geranium molle Dove's-foot geranium
Geranium rotundifolium Round-leafed geranium
Geranium rotundifolium Round-leafed geranium (white)
Gilia achilleifolia ssp. achilleifolia? California gilia?
Gilia angelensis Angel's gilia
Gilia angelensis Angel's gilia (white)
Gilia capitata ssp. abrotanifolia Globe gilia
Gilia clivorum Purple-spot gilia
Githopsis diffusa ssp. diffusa Southern blue-cup
Glaucium flavum Yellow horned poppy
Glebionis coronaria Garland chrysanthemum (white) Chrysanthemum coronarium
Glebionis coronaria Garland chrysanthemum (yellow) Chrysanthemum coronarium
Glycyrrhiza lepidota Wild licorice
Gnaphalium palustre Lowland cudweed
Grindelia camporum Gum plant
Gutierrezia californica California matchweed
Gutierrezia californica California matchweed (flower)
Hazardia squarrosa Sawtooth goldenbush
Hedypnois cretica Crete weed
Helenium puberulum Rosilla
Helianthus annuus Common sunflower
Helianthus gracilentus Slender sunflower
Helianthus gracilentus Slender sunflower (inflorescence)
Heliotropium curassavicum var. oculatum Wild heliotrope
Helminthotheca echioides Bristly ox-tongue Picris echioides
Herniaria hirsuta Herniaria
Hesperevax sparsiflora Common evax
Hesperocnide tenella Western stinging nettle
Hesperocyparis forbesii Tecate cypress Cupressus forbesii
Hesperocyparis forbesii Tecate cypress (young) Cupressus forbesii
Hesperocyparis nevadensis? Piute cypress?
Hesperolinon micranthum Small-flowered flax
Hesperoyucca whipplei Chaparral yucca Yucca whipplei
Hesperoyucca whipplei Chaparral yucca (flowers) Yucca whipplei
Hesperoyucca whipplei Chaparral yucca (fruit) Yucca whipplei
Hesperoyucca whipplei Chaparral yucca (leaves) Yucca whipplei
Heteromeles arbutifolia Toyon
Heteromeles arbutifolia Toyon (berries)
Heterotheca grandiflora Telegraph weed
Heterotheca sessiliflora ssp. fastigiata Golden aster
Hieracium argutum Hawkweed
Hieracium argutum Hawkweed (leaves)
Hirschfeldia incana Mediterranean mustard
Hoita macrostachya Leather root
Holodiscus discolor var. discolor Cream bush
Holodiscus discolor var. discolor Cream bush (leaves)
Hordeum depressum Low barley
Hordeum murinum Foxtail barley
Hordeum vulgare Common barley
Horkelia cuneata var. cuneata Wedgeleaf horkelia Horkelia cuneata ssp. cuneata
Hypochaeris glabra Smooth cat's ear
Ipomoea indica Blue morning-glory Ipomoea mutabilis
Isocoma menziesii var. menziesii Coast goldenbush
Isocoma menziesii var. sedoides Coast goldenbush
Isocoma menziesii var. vernonioides Coast goldenbush
Iva axillaris Poverty weed
Iva hayesiana San Diego povertyweed
Iva hayesiana San Diego povertyweed (leaves)
Jasminum mesnyi Primrose jasmine
Jaumea carnosa Marsh jaumea
Juglans californica California black walnut (catkins)
Juglans californica California black walnut (fruit)
Juncus acutus Spiny rush
Juncus balticus Wire rush
Juncus balticus (inflorescence) Wire rush
Juncus macrophyllus? Long-leaved rush?
Juncus patens Spreading rush
Juncus patens Spreading rush (fruit)
Juncus textilis Basket rush
Juncus xiphioides Iris-leaved rush
Juniperus californica California juniper
Keckiella cordifolia Heart-leaved penstemon
Kickxia elatine Fluellin
Kochia scoparia Fire bush
Koeleria macrantha June grass
Lactuca serriola Prickly lettuce
Laennecia coulteri Coulter's horseweed Conyza coulteri
Lagophylla ramosissima Hareleaf
Lagophylla ramosissima Hareleaf (in fruit)
Lamarckia aurea Goldentop
Lamium amplexicaule Henbit
Lantana camara Spanish flag
Lantana montevidensis Trailing lantana
Lasthenia californica Goldfields
Lasthenia californica Goldfields (flower)
Lasthenia coronaria Southern goldfields
Lasthenia glabrata ssp. coulteri Coulter's goldfields
Lathyrus latifolius Perennial sweet pea
Lathyrus odoratus Sweet pea
Lathyrus vestitus var. vestitus Wild pea
Layia platyglossa Tidy tips
Lemna sp. Duckweed
Lepechinia fragrans Pitcher sage
Lepidium didymum Wart cress Coronopus didymus
Lepidium draba Hoary cress Cardaria draba
Lepidium lasiocarpum Hairy peppergrass
Lepidium latifolium Perennial peppergrass
Lepidium latipes Dwarf peppergrass (fruit)
Lepidium nitidum Peppergrass
Lepidium strictum Prostrate peppergrass
Lepidium virginicum Peppergrass
Lepidospartum squamatum Scale broom
Lepidospartum squamatum Scale broom (flowers)
Leptochloa fusca ssp. uninervia Mexican sprangletop Leptochloa uninervia
Leptosiphon liniflorus Flax-flowered linanthus Linanthus liniflorus
Leptosiphon parviflorus Common linanthus Linanthus parviflorus
Leptosyne bigelovii Bigelow's coreopsis Coreopsis bigelovii
Leptosyne bigelovii Bigelow's coreopsis (phyllaries) Coreopsis bigelovii
Leptosyne californica California coreopsis Coreopsis californica
Leptosyne gigantea Giant coreopsis Coreopsis gigantea
Lewisia rediviva var. rediviva Bitter root
Ligustrum lucidum Glossy privet
Ligustrum lucidum Glossy privet (fruit)
Lilium humboldtii Humboldt lily
Limonium californicum California sea-lavender
Limonium californicum California sea-lavender (flowers)
Limonium perezii Sea-lavender
Limonium sinuatum Statice
Linanthus californicus Prickly phlox Leptodactylon californicum
Linanthus dianthiflorus Ground pink
Linanthus dianthiflorus Ground pink (white)
Linaria maroccana Morocco toadflax
Linaria pinifolia Pine needle toadflax
Linum grandiflorum Scarlet flax
Linum usitatissimum Common flax
Lithophragma affine Woodland star
Lobularia maritima Sweet alyssum
Logfia filaginoides California filago Filago californica
Logfia gallica Narrow-leaved filago Filago gallica
Lomatium dasycarpum Woolly lomatium
Lomatium lucidum Shiny lomatium
Lomatium utriculatum Hog fennel
Lomatium utriculatum Hog fennel (fruit)
Lonicera subspicata Chaparral honeysuckle
Lonicera subspicata Chaparral honeysuckle (berries)
Lotus corniculatus Bird's-foot trefoil
Ludwigia peploides Yellow water weed
Lupinus bicolor Dove lupine
Lupinus concinnus Bajada lupine
Lupinus excubitus var. hallii Hall's bush lupine
Lupinus hirsutissimus Stinging lupine
Lupinus latifolius Broad-leaved lupine
Lupinus longifolius Bush lupine
Lupinus longifolius Bush lupine (white)
Lupinus microcarpus Chick lupine
Lupinus sparsiflorus Coulter's lupine
Lupinus sparsiflorus Coulter's lupine (pink)
Lupinus succulentus Succulent lupine
Lupinus succulentus Succulent lupine (pink)
Lupinus truncatus Truncate-leaf lupine
Lycianthes rantonnetii Blue potatobush
Lycopersicon esculentum Tomato
Lycopersicon esculentum Tomato (fruit)
Lysimachia arvensis Scarlet pimpernel Anagallis arvensis
Lysimachia arvensis Scarlet pimpernel (blue) Anagallis arvensis
Lysimachia arvensis Scarlet pimpernel (white) Anagallis arvensis
Lythrum californicum California loosestrife
Lythrum hyssopifolia Hyssop loosestrife
Madia elegans Common madia
Madia exigua Pygmy madia
Madia gracilis Sticky madia
Madia sativa? Coast madia?
Malacothamnus fasciculatus Bush mallow
Malacothrix clevelandii Annual malacothrix
Malacothrix saxatilis var. tenuifolia Cliff aster
Malephora crocea Red iceplant
Malosma laurina Laurel sumac
Malva nicaeensis Bull mallow
Malva parviflora Cheeseweed
Malva pseudolavatera Cretan mallow Lavatera cretica
Malvella leprosa Alkali mallow
Marah macrocarpa Wild cucumber (female flower) Marah macrocarpus
Marah macrocarpa Wild cucumber (fruit) Marah macrocarpus
Marah macrocarpa Wild cucumber (male flowers) Marah macrocarpus
Marrubium vulgare Horehound
Matricaria discoidea Pineapple weed Chamomilla suaveolens
Meconella denticulata Small-flowered meconella (in fruit)
Medicago lupulina Black medick
Medicago polymorpha Bur clover
Medicago sativa Alfalfa
Melica californica California melic
Melica californica California melic (inflorescence)
Melica imperfecta Small-flowered melic
Melilotus albus White sweet clover Melilotus alba
Melilotus indicus Sour clover Melilotus indica
Mentha Xpiperita Peppermint
Mentha pulegium Pennyroyal
Mentha spicata Spearmint
Mentzelia laevicaulis Blazing star
Mentzelia micrantha Stickleaf
Mesembryanthemum crystallinum Crystalline ice plant
Mesembryanthemum nodiflorum Slender-leaved iceplant
Micranthes californica California saxifrage Saxifraga californica
Micropus californicus Cotton top
Microseris douglasii ssp. douglasii Microseris
Microseris douglasii ssp. tenella Microseris
Microseris douglasii ssp. tenella Microseris (fruit)
Microseris douglasii ssp. tenella Microseris (nodding)
Microsteris gracilis Slender phlox Phlox gracilis
Microsteris gracilis Slender phlox (white) Phlox gracilis
Mimulus aurantiacus Bush monkeyflower
Mimulus aurantiacus Bush monkeyflower (flowers)
Mimulus aurantiacus Bush monkeyflower (red)
Mimulus aurantiacus Bush monkeyflower (white)
Mimulus brevipes Wide-mouthed monkeyflower
Mimulus cardinalis^ Scarlet monkeyflower
Mimulus floribundus Slimy monkeyflower
Mimulus guttatus Stream monkeyflower
Mimulus pilosus Downy monkeyflower
Minuartia douglasii Douglas' sandwort
Mirabilis jalapa Four o'clock (pink)
Mirabilis jalapa Four o'clock (white)
Mirabilis jalapa Four o'clock (yellow)
Mirabilis laevis var. crassifolia Wishbone plant Mirabilis californica
Mirabilis laevis var. crassifolia Wishbone plant (white) Mirabilis californica
Modiola caroliniana Bristly mallow
Monardella hypoleuca White-leaf monardella
Monolopia lanceolata Hillside daisy
Monolopia lanceolata Hillside daisy (phyllaries)
Montia fontana Water blinks
Moraea polystachya Butterfly iris
Muhlenbergia microsperma Annual muhly
Muhlenbergia rigens Deergrass
Muilla maritima Common muilla
Myoporum laetum Myoporum
Myriopteris newberryi Newberry's lip-fern Cheilanthes newberryi
Narcissus papyraceus? Paperwhite?
Narcissus pseudonarcissus Daffodil
Nasturtium officinale Water cress Rorippa nasturtium-aquaticum
Navarretia hamata Hooked navarretia
Navarretia leptalea ssp. bicolor Bridge's gilia
Navarretia ojaiensis Ojai navarretia
Navarretia ojaiensis? Ojai navarretia? (blue)
Nemophila menziesii Baby blue eyes
Nemophila pedunculata Meadow nemophila
Nemophila pedunculata Meadow nemophila (leaves)
Nerium oleander Oleander (red)
Nerium oleander Oleander (white)
Nicotiana acuminata Many-flowered tobacco
Nicotiana clevelandii Cleveland's tobacco
Nicotiana glauca Tree tobacco
Nicotiana quadrivalvis Indian tobacco
Nolina cismontana Chaparral beargrass
Nolina cismontana Chaparral beargrass (in fruit)
Nuttallanthus texanus Blue toadflax Linaria canadensis
Nymphaea mexicana Yellow water-lily
Oenothera elata ssp. hirsutissima Hairy evening primrose
Oenothera rosea Rose evening primrose
Oenothera speciosa Mexican evening primrose
Oenothera suffrutescens^ Scarlet gaura Gaura coccinea
Oenothera xenogaura Drummond's gaura Gaura drummondii
Olea europaea Olive
Olea europaea Olive (fruit)
Opuntia ficus-indica Indian fig
Opuntia ficus-indica Indian fig (flower)
Opuntia littoralis Coast prickly pear
Opuntia oricola Chaparral prickly pear
Orobanche corymbosa? Flat-topped broomrape?
Orobanche fasciculata Clustered broomrape
Orobanche parishii Parish's broomrape
Orobanche uniflora Naked broomrape
Orobanche vallicola Hillside broomrape
Osmorhiza brachypoda Sweet cicely
Osmorhiza brachypoda Sweet cicely (fruit)
Oxalis californica Wood-sorrel Oxalis albicans
Oxalis corniculata Weedy oxalis
Oxalis pes-caprae Bermuda buttercup
Oxalis pes-caprae Bermuda buttercup (flower)
Packera breweri Brewer's ragwort Senecio breweri
Paeonia californica California peony
Paeonia californica California peony (flower)
Papaver californicum Fire poppy
Papaver heterophyllum Wind poppy Stylomecon heterophylla
Parietaria hespera Pellitory
Parkinsonia aculeata Mexican palo verde
Parthenocissus inserta Virginia creeper Parthenocissus vitacea
Paspalum dilatatum Dallis grass
Paspalum distichum Knot grass
Paspalum vaginatum Seashore paspalum
Passiflora caerulea Blue passion vine
Pectocarya linearis Slender pectocarya
Pectocarya penicillata Winged comb-bur
Pectocarya penicillata Winged comb-bur (fruit)
Pedicularis densiflora Indian warrior
Pellaea andromedifolia Coffee fern
Pellaea mucronata Bird's-foot fern
Pennisetum clandestinum Kikuyu grass
Pennisetum setaceum Fountain grass
Pennisetum villosum Feathertop
Penstemon centranthifolius Scarlet bugler
Penstemon heterophyllus Foothill penstemon
Penstemon heterophyllus Foothill penstemon (pink)
Penstemon spectabilis var. subviscosus Showy penstemon
Pentachaeta lyonii Lyon's pentachaeta
Pentagramma triangularis Goldback fern
Pentagramma triangularis Goldback fern (underleaf)
Peritoma arborea Bladderpod Isomeris arborea
Perityle emoryi Rock daisy
Persea americana Avocado
Persea americana Avocado (fruit)
Persicaria amphibia Water smartweed Polygonum amphibium
Persicaria amphibia Water smartweed (flowers) Polygonum amphibium
Persicaria lapathifolia Willow smartweed Polygonum lapathifolium
Persicaria lapathifolia Willow smartweed (leaves) Polygonum lapathifolium
Persicaria maculosa Lady's thumb Polygonum persicaria
Petrorhagia dubia Wild carnation
Petunia parviflora Wild petunia (white)
Phacelia brachyloba Yellow-throated phacelia
Phacelia cicutaria var. hispida Caterpillar phacelia
Phacelia distans Common phacelia
Phacelia distans Common phacelia (white)
Phacelia egena Rock phacelia
Phacelia grandiflora Large-flowered phacelia
Phacelia grandiflora Large-flowered phacelia (white)
Phacelia hubbyi Hubby's phacelia Phacelia cicutaria var. hubbyi
Phacelia imbricata var. imbricata Mountain phacelia
Phacelia minor Wild Canterbury bells
Phacelia parryi Parry's phacelia
Phacelia ramosissima Branching phacelia
Phacelia viscida var. viscida Sticky phacelia
Phacelia viscida var. viscida Sticky phacelia (white)
Phalaris aquatica Harding grass
Phalaris minor Mediterranean canarygrass
Phoenix canariensis Canary Islands date palm
Pholistoma auritum Fiesta flower
Phoradendron leucarpum ssp. macrophyllum Sycamore mistletoe Phoradendron macrophyllum
Phoradendron leucarpum ssp. tomentosum Oak mistletoe Phoradendron villosum
Phyla lanceolata Frog fruit
Phyla nodiflora Lippia
Pickeringia montana Chaparral pea
Piperia cooperi Cooper's rein orchid
Piperia elongata Rein orchid
Piperia unalascensis Alaskan rein orchid
Piperia unalascensis Alaskan rein orchid (in fruit)
Pittosporum undulatum Mock orange
Pittosporum undulatum Mock orange (fruit)
Plagiobothrys acanthocarpus Adobe popcorn flower
Plagiobothrys canescens Valley popcorn flower
Plagiobothrys collinus var. fulvescens Rough-stemmed popcorn flower
Plagiobothrys collinus var. gracilis Cooper's popcorn flower
Plagiobothrys nothofulvus Popcorn flower
Plantago elongata Prairie plantain
Plantago erecta California plantain
Plantago lanceolata English plantain
Plantago major Common plantain
Platanus racemosa Western sycamore (fall)
Platanus racemosa Western sycamore (flower heads)
Platanus racemosa Western sycamore (leaves/flower heads)
Platystemon californicus Cream cups
Plecostachys serpyllifolia Petite licorice
Plectritis ciliosa Long-spurred plectritis
Pluchea odorata Marsh fleabane
Plumbago auriculata Cape leadwort
Poa annua Annual bluegrass
Poa secunda Pine bluegrass
Polycarpon tetraphyllum Four-leaved allseed
Polygala cornuta Milkwort
Polygonum aviculare ssp. depressum Common knotweed Polygonum arenastrum
Polygonum aviculare ssp. depressum Common knotweed (flower) Polygonum arenastrum
Polypodium californicum California polypody
Polypodium californicum California polypody (underleaf)
Polypogon interruptus Ditch beard grass
Polypogon monspeliensis Rabbitsfoot grass
Polypogon viridis Water beard grass Agrostis viridis
Populus fremontii Fremont Cottonwood
Populus fremontii Fremont Cottonwood (catkin)
Populus trichocarpa Black cottonwood (leaves) Populus balsamifera
Portulaca oleracea Purslane
Potentilla anglica English cinquefoil
Primula clevelandii Shooting star Dodecatheon clevelandii
Primula clevelandii Shooting star (white) Dodecatheon clevelandii
Prunus ilicifolia ssp. ilicifolia Holly-leaf cherry
Prunus ilicifolia ssp. ilicifolia Holly-leaf cherry (fruit)
Prunus ilicifolia ssp. lyonii Catalina cherry
Pseudognaphalium beneolens? Fragrant everlasting?
Pseudognaphalium biolettii Bicolored everlasting Gnaphalium bicolor
Pseudognaphalium californicum California everlasting Gnaphalium californicum
Pseudognaphalium leucocephalum White cudweed Gnaphalium leucocephalum
Pseudognaphalium luteoalbum Weedy cudweed Gnaphalium luteo-album
Pseudognaphalium microcephalum Felt-leaf everlasting Gnaphalium canescens ssp. microcephalum
Pseudognaphalium ramosissimum Pink everlasting Gnaphalium ramosissimum
Pseudognaphalium stramineum Cotton-batting plant Gnaphalium stramineum
Psilocarphus tenellus Woolly-heads
Pteridium aquilinum Bracken fern
Pterostegia drymarioides Threadstem
Pterostegia drymarioides Threadstem (leaves)
Pulicaria paludosa Spanish sunflower
Pyracantha angustifolia Pyracantha
Quercus Xmacdonaldii? MacDonald oak?
Quercus Xmacdonaldii? MacDonald oak? (leaves/acorns)
Quercus agrifolia California live oak
Quercus agrifolia California live oak (acorns)
Quercus agrifolia California live oak (catkins)
Quercus berberidifolia Scrub oak (acorn)
Quercus berberidifolia Scrub oak (catkins)
Quercus douglasii Blue oak
Quercus douglasii Blue oak (leaves)
Quercus lobata Valley oak
Quercus lobata Valley oak (acorn)
Quercus lobata Valley oak (catkins)
Quercus palmeri Palmer's oak
Quercus palmeri Palmer's oak (catkins)
Quercus palmeri Palmer's oak (leaf)
Rafinesquia californica California chicory
Ranunculus californicus California buttercup
Ranunculus hebecarpus Hairy-fruited buttercup
Ranunculus hebecarpus Hairy-fruited buttercup (fruit)
Ranunculus hebecarpus Hairy-fruited buttercup (leaf)
Ranunculus repens Creeping buttercup
Raphanus raphanistrum Jointed charlock
Raphanus sativus Wild radish (pink)
Raphanus sativus Wild radish (white)
Rhamnus crocea Redberry
Rhamnus crocea Redberry (fruit)
Rhamnus ilicifolia Holly-leaved redberry
Rhamnus ilicifolia Holly-leaved redberry (fruit)
Rhus aromatica Skunk bush Rhus trilobata
Rhus integrifolia Lemonade berry
Rhus integrifolia Lemonade berry (fruit)
Rhus ovata Sugar bush
Ribes aureum Golden currant
Ribes californicum Hillside gooseberry
Ribes indecorum White chaparral currant
Ribes malvaceum Chaparral currant
Ribes malvaceum Chaparral currant (buds)
Ribes malvaceum Chaparral currant (white)
Ribes speciosum Fuschia-flowered gooseberry
Ricinus communis Castor-bean
Robinia pseudoacacia Black locust
Romneya coulteri Matilija poppy
Rorippa curvisiliqua Western yellow cress
Rosa californica California wild rose
Rosa californica California wild rose (hips)
Rosmarinus officinalis Rosemary
Rubus armeniacus Himalayan blackberry Rubus discolor
Rubus ursinus Blackberry
Rubus ursinus Blackberry (fruit)
Rumex acetosella Sheep sorrel
Rumex conglomeratus Clustered dock
Rumex crispus Curly dock
Rumex hymenosepalus Wild rhubarb
Rumex pulcher? Fiddle dock?
Rumex salicifolius Willow dock
Rumex stenophyllus Narrowleaf dock
Rupertia physodes California tea
Salicornia pacifica Pickleweed Salicornia virginica
Salix exigua Sandbar willow
Salix gooddingii Black willow
Salix laevigata Red willow (leaves)
Salix laevigata Red willow (male)
Salix lasiandra Shining willow
Salix lasiolepis Arroyo willow (female)
Salix lasiolepis Arroyo willow (leaves)
Salix lasiolepis Arroyo willow (male)
Salsola australis? Russian thistle?
Saltugilia splendens ssp. splendens Splendid gilia Gilia splendens ssp. splendens
Salvia apiana White sage
Salvia columbariae Chia
Salvia leucantha Mexican sage
Salvia leucophylla Purple sage
Salvia mellifera Black sage
Salvia spathacea Hummingbird sage
Sambucus nigra ssp. caerulea Blue elderberry Sambucus mexicana
Sambucus nigra ssp. caerulea Blue elderberry (fruit) Sambucus mexicana
Samolus parviflorus Water pimpernel
Sanicula arguta Snakeroot
Sanicula bipinnata Poison sanicle
Sanicula crassicaulis Pacific sanicle
Sanicula tuberosa Turkey pea
Scandix pecten-veneris Shepherd's needle
Scandix pecten-veneris Shepherd's needle (with fruit)
Schinus molle Peruvian pepper tree (flower)
Schinus molle Peruvian pepper tree (leaves/fruit)
Schinus terebinthifolius Brazilian peppertree
Schinus terebinthifolius Brazilian peppertree (fruit)
Schismus barbatus Mediterranean grass
Schoenoplectus americanus American bulrush Scirpus americanus
Schoenoplectus californicus California bulrush Scirpus californicus
Scrophularia californica California bee plant
Scutellaria tuberosa Skullcap
Selaginella bigelovii Spike moss
Senecio aphanactis California groundsel
Senecio flaccidus var. douglasii Bush senecio
Senecio quadridentatus Cotton fireweed
Senecio quadridentatus Cotton fireweed (flowers)
Senecio vulgaris Common groundsel
Senna artemisioides Silver senna
Senna didymobotrya African senna
Sherardia arvensis Field madder
Sidalcea sparsifolia Checker bloom
Silene antirrhina Sleepy catchfly
Silene coniflora Many-nerved catchfly Silene multinervia
Silene gallica Windmill pink
Silene laciniata ssp. laciniata Indian pink
Silene verecunda San Francisco campion
Silybum marianum Milk thistle
Sinapis arvensis Charlock
Sisymbrium altissimum Tumble mustard
Sisymbrium irio London rocket
Sisymbrium officinale Hedge mustard
Sisymbrium orientale Oriental mustard
Sisyrinchium bellum Blue-eyed grass
Sisyrinchium bellum Blue-eyed grass (white)
Solanum americanum Little white nightshade
Solanum douglasii White nightshade
Solanum douglasii White nightshade (purple)
Solanum elaeagnifolium White horse-nettle
Solanum physalifolium Hairy nightshade Solanum sarrachoides
Solanum rostratum Buffalo berry
Solanum xanti Purple nightshade
Solanum xanti Purple nightshade (white)
Solidago velutina ssp. californica California goldenrod Solidago californica
Sonchus asper Prickly sow thistle
Sonchus oleraceus Sow thistle
Sorghum bicolor Sorghum
Sorghum halepense Johnson grass
Spartium junceum Spanish broom
Spergula arvensis Starwort
Spergularia bocconi Boccone's sand spurrey
Spergularia macrotheca? Sand-spurrey?
Spergularia marina Salt-marsh sand spurrey
Stachys albens White hedge nettle
Stachys bullata Hedge nettle
Stachys rigida Hedge nettle
Stanleya pinnata Prince's plume
Stebbinsoseris heterocarpa Brown microseris
Stebbinsoseris heterocarpa Brown microseris (in fruit)
Stellaria media Chickweed
Stellaria nitens Smooth chickweed
Stephanomeria cichoriacea Tejon milk-aster
Stephanomeria cichoriacea Tejon milk-aster (white)
Stephanomeria diegensis San Diego milk-aster
Stephanomeria exigua Mitra
Stephanomeria virgata ssp. virgata Twiggy wreath plant
Stipa cernua Nodding needlegrass Nassella cernua
Stipa cernua Nodding needlegrass (inflorescence) Nassella cernua
Stipa coronata Giant needlegrass Achnatherum coronatum
Stipa lepida Foothill needlegrass Nassella lepida
Stipa miliacea Smilo grass Piptatherum miliaceum
Stipa pulchra Purple needlegrass Nassella pulchra
Stipa pulchra Purple needlegrass (inflorecence) Nassella pulchra
Stipa tenuissima Mexican feather grass
Stylocline gnaphaloides Nest-straw
Suaeda taxifolia Sea blite
Suaeda taxifolia Sea blite (inflorescence)
Symphoricarpos mollis Snowberry
Symphoricarpos mollis Snowberry (fruit)
Symphyotrichum lanceolatum Lance-leaved aster Aster lanceolatus
Symphyotrichum subulatum Slim aster Aster subulatus
Tamarix ramosissima Saltcedar
Tamarix ramosissima Saltcedar (flowers)
Tanacetum parthenium Feverfew
Taraxacum officinale Dandelion
Taraxacum officinale Dandelion (in fruit)
Tauschia arguta Southern tauschia
Tauschia hartwegii Hartweg's tauschia
Tecoma capensis Cape honeysuckle
Tetradymia comosa Cotton-thorn
Tetradymia comosa Cotton-thorn (flowers)
Tetragonia tetragonioides New Zealand spinach
Thalictrum fendleri var. fendleri Meadow rue (female)
Thalictrum fendleri var. polycarpum Meadow rue (female)
Thalictrum fendleri var. polycarpum Meadow rue (male)
Thysanocarpus conchuliferus Santa Cruz Island fringepod
Thysanocarpus curvipes Lace pod
Thysanocarpus curvipes Lace pod (pods)
Thysanocarpus laciniatus Fringe-pod
Torilis arvensis Hedge parsley
Torilis nodosa Knotted hedge parsley
Toxicodendron diversilobum Poison oak
Toxicodendron diversilobum Poison oak (leaves in fall)
Toxicoscordion fremontii Star lily Zigadenus fremontii
Toxicoscordion fremontii Star lily (flower) Zigadenus fremontii
Tragopogon dubius Goat's beard
Tragopogon porrifolius Oyster plant
Tragopogon porrifolius Oyster plant (in fruit)
Tribulus terrestris Puncture vine
Tribulus terrestris Puncture vine (fruit)
Trichostema lanatum Woolly blue curls
Trichostema lanceolatum Vinegar weed
Trifolium albopurpureum Rancheria clover
Trifolium ciliolatum Tree clover
Trifolium ciliolatum Tree clover (aging)
Trifolium ciliolatum Tree clover (leaves)
Trifolium depauperatum Balloon clover (in fruit)
Trifolium fragiferum Strawberry clover
Trifolium fragiferum Strawberry clover (fruit)
Trifolium hirtum Rose clover
Trifolium microcephalum Small-headed clover
Trifolium obtusiflorum Creek clover
Trifolium repens White clover
Trifolium variegatum var. variegatum White-tipped clover
Trifolium willdenovii Tomcat clover
Triodanis biflora Venus looking-glass
Triticum aestivum Wheat
Tropaeolum majus Nasturtium
Tropidocarpum gracile Dobie-pod
Turritis glabra Tower mustard Arabis glabra
Typha domingensis Narrow-leaved cattail
Typha latifolia Broad-leaved cattail
Ulmus parvifolia Chinese elm
Umbellularia californica California bay tree
Umbellularia californica California bay tree (fruit)
Uropappus lindleyi Silver puffs
Uropappus lindleyi Silver puffs (in fruit)
Urospermum picroides Prickly golden fleece
Urtica dioica Stinging nettle
Urtica urens Dwarf nettle
Venegasia carpesioides Canyon sunflower
Verbascum virgatum Wand mullein
Verbena bonariensis Purpletop
Verbena bracteata Big-bract verbena
Verbena lasiostachys Common verbena
Verbena lasiostachys Common verbena (white)
Verbena pulchella Moss verbena Verbena tenuisecta
Verbesina encelioides Crownbeard
Veronica anagallis-aquatica Water speedwell
Veronica arvensis Corn speedwell
Veronica peregrina Neckweed
Veronica persica Persian speedwell
Veronica serpyllifolia Thymeleaf speedwell
Veronica serpyllifolia Thymeleaf speedwell (all white)
Vicia americana American vetch
Vicia benghalensis Reddish tufted vetch
Vicia ludoviciana Slim vetch
Vicia sativa Spring vetch
Vicia villosa Winter vetch
Vicia villosa Winter vetch (pink)
Vinca major Periwinkle
Viola pedunculata Johnny jump-up
Vitis girdiana Wild grape
Vitis girdiana Wild grape (mature fruit)
Washingtonia robusta Mexican fan palm
Wigandia urens Caracus wigandia
Woodwardia fimbriata Giant chain fern
Xanthium spinosum Spiny cocklebur
Xanthium strumarium Cocklebur
Yabea microcarpa California hedge parsley
Yabea microcarpa California hedge parsley (fruit)
Zantedeschia aethiopica Calla lily
Zeltnera exaltata Spring-loving centaury Centaurium exaltatum
Zeltnera venusta Canchalagua Centaurium venustum

^ = new photo (as of July 31, 2017)

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