Tackstem,
White (Calycoseris
wrightii)
Yellow (Calycoseris
parryi)
Tahquitz ivesia (Ivesia callida)
Tall fescue (Festuca arundinacea)*
Tall flat sedge (Cyperus eragrostis)
Tall hawksbeard (Crepis acuminata)
Tall horseweed (Erigeron
canadensis)
Tall melica (Melica frutescens)
Tall skeleton weed (Eriogonum deflexum var. baratum)
Tall wheat grass (Elymus ponticus)*
Tanbark oak (Notholithocarpus densiflorus var. densiflorus)
Tansy-leaved phacelia (Phacelia
tanacetifolia)
Tansy mustard,
Appressed-fruited mountain (Descurainia incana)
[Common] (Descurainia
pinnata ssp. glabra)
Mountain (Descurainia
incisa ssp. incisa)
Sierra (Descurainia
californica)
Western (Descurainia pinnata ssp. brachycarpa)
Tarragon, Wild (Artemisia dracunculus)
Tarplant,
Graceful (Holocarpha
virgata ssp. elongata)
Heermann's (Holocarpha
heermannii)
Island (Deinandra clementina)
Kellogg's (Deinandra kelloggii)
Kern (Deinandra pallida)
Mojave (Deinandra mohavensis)
Otay (Deinandra conjugens)
Red Rock (Deinandra arida)
San Diego (Deinandra paniculata)
Santa Susana (Deinandra minthornii)
Slender (Deinandra fasciculata)
Smooth (Centromadia pungens ssp. laevis)
Southern (Centromadia parryi ssp. australis)
Tauschia,
Parish's (Tauschia
parishii)
Southern (Tauschia
arguta)
Tawny popcorn flower (Plagiobothrys
fulvus var. campestris)
Tecate cypress (Hesperocyparis forbesii)
Tecopa bird's beak (Chloropyron tecopense)
Tehachapi buckwheat (Eriogonum callistum)
Tehachapi monardella (Monardella linoides ssp. oblonga)
Tehachapi ragwort (Packera ionophylla)
Tejon cryptantha (Cryptantha microstachys)
Tejon poppy (Eschscholzia lemmonii ssp. kernensis)
Telegraph weed (Heterotheca
grandiflora)
Terracina spurge (Euphorbia terracina)*
Tetracoccus,
Holly-leaved (Tetracoccus ilicifolius)
Parry's (Tetracoccus dioicus)
Thickleaf yerba santa (Eriodictyon
crassifolium var. crassifolium)
Thick-leaved ground-cherry (Physalis
crassifolia)
Thick-leaved phacelia (Phacelia
pachyphylla)
Thickpod milkvetch (Astragalus pachypus var. pachypus)
Thickstem wild cabbage (Caulanthus
crassicaulis)
Thimbleberry (Rubus
parviflorus)
Thimblehead, Wright's (Hymenothrix wrightii)
Thistle,
Barbwire Russian (Salsola
paulsenii)*
Blessed (Centaurea
benedictus)*
Bull (Cirsium vulgare)*
California (Cirsium
occidentale var. californicum)
Cobweb (Cirsium
occidentale var. occidentale)
Desert (Cirsium neomexicanum)
Elk (Cirsium scariosum var. congdonii)
Italian (Carduus
pycnocephalus ssp. pycnocephalus)*
Milk (Silybum marianum)*
Mojave (Cirsium mohavense)
Red (Cirsium arizonicum var. tenuisectum)
Russian (Salsola
tragus)*
Southern meadow (Cirsium scariosum var. citrinum)
Venus (Cirsium occidentale
var. venustum)
Yellow star (Centaurea
solstitialis)*
Thistle sage (Salvia
carduacea)
Thomas' buckwheat (Eriogonum thomasii)
Thompson's beardtongue (Penstemon thompsoniae)
Thornbush,
Anderson's (Lycium
andersonii)
Fremont's (Lycium
fremontii)
Thorne's buckwheat (Eriogonum thornei)
Thornmint,
Heartleaf (Acanthomintha obovata ssp. cordata)
San Diego (Acanthomintha
ilicifolia)
Thorny skeleton-plant (Pleiacanthus
spinosus)
Thoroughwort (Ageratina adenophora)*
Threadleaf rubber rabbitbrush (Ericameria
nauseosa ssp. oreophila)
Thread-leaved brodiaea (Brodiaea
filifolia)
Threadplant,
Botany woman's (Nemacladus twisselmannii var. botanywomaniae)
Comb-leaved (Nemacladus pinnatifidus)
Desert (Nemacladus
rubescens)
Desert short-flowered (Nemacladus longiflorus var. breviflorus)
Eastern (Nemacladus
orientalis)
Eastwood's (Nemacladus eastwoodiae)
Glandular (Nemacladus glanduliferus)
Long-flowered (Nemacladus longiflorus var. longiflorus)
Parikh's (Nemacladus parikhiae)
Sigmoid (Nemacladus sigmoideus)
Slender (Nemacladus tenuis var. tenuis)
Smallflower (Nemacladus ramosissimus)
Threadstem (Pterostegia drymarioides)
Threadstem carpet-weed (Mollugo cerviana)*
Threadstem gilia (Linanthus filiformis)
Threadstem madia (Madia exigua)
Three-awn (Aristida adscensionis)
Three-headed showy gilia (Gilia cana ssp. triceps)
Three-hearts (Tricardia watsonii)
Threelobe oxytheca (Sidotheca trilobata)
Three-petal bedstraw, see Sprawling three-petal bedstraw
Three-petal bedstraw, see Dwarf three-petal bedstraw
Three-spot (Osmadenia
tenella)
Thurber's buckwheat (Eriogonum thurberi)
Thurber's penstemon (Penstemon thurberi)
Thurber's spineflower (Centrostegia thurberi)
Thurber's stemsucker (Pilostyles thurberi)
Thyme-leaved speedwell (Veronica
serpyllifolia ssp. humifusa)*
Thyme-leaved spurge (Euphorbia serpyllifolia
ssp. serpyllifolia)
Thymophylla, Five-needled (Thymophylla
pentachaeta var. belenidium)
Tickseed,
California (Leptosyne californica)
Leafstem (Leptosyne calliopsidea)
Tidestrom's milkvetch (Astragalus tidestromii)
Tidy tips,
Comanche Point (Layia leucopappa)
White (Layia glandulosa)
Yellow (Layia
platyglossa)
Tiehm's rush (Juncus tiehmii)
Tiling's monkeyflower (Erythranthe tilingii)
Timberline phacelia (Phacelia hastata
var. hastata)
Tinker's penny (Hypericum anagalloides)
Tiny bedstraw (Galium murale)*
Toadflax,
Blue (Nuttallanthus texanus)
Dalmatian (Linaria dalmatica ssp. dalmatica)*
Toad lily (Montia chamissoi)
Toad rush,
Common (Juncus
bufonius var. bufonius)
Clustered (Juncus
bufonius var. congestus)
Western (Juncus
bufonius var. occidentalis)
Tobacco,
Coyote (Nicotiana
attenuata)
Desert (Nicotiana
obtusifolia)
Four-valved tobacco (Nicotiana
quadrivalvis)
Tree (Nicotiana glauca)
Tocalote (Centaurea melitensis)*
Tomato, Common (Lycopersicon esculentum)
Tomcat clover (Trifolium
willdenovii)
Toothed calicoflower (Downingia cuspidata)
Toothed wintergreen (Pyrola dentata)
Torrey pine (Pinus torreyana ssp. torreyana)
Torrey pine, Santa Rosa Island (Pinus torreyana ssp. insularis)
Torrey's amaranth (Amaranthus torreyi)
Torrey's eucrypta (Eucrypta chrysanthemifolia var. bipinnatifida)
Torrey's milkvetch (Astragalus calycosus var. calycosus)
Torrey's saltbush (Atriplex torreyi var. torreyi)
Torrey's scrub oak (Quercus acutidens)
Tower mustard (Turritis glabra)
Toyon (Heteromeles arbutifolia)
Tracy's woolstar (Eriastrum tracyi)
Trailing windmills (Allionia incarnata var. incarnata)
Transmontane gilia (Gilia transmontana)
Transverse fine-flower gilia (Gilia
leptantha ssp. transversa)
Transverse Range manzanita (Arctostaphylos
glandulosa ssp. mollis)
Trask's yerba santa (Eriodictyon traskiae ssp. smithii)
Tree clover (Trifolium ciliolatum)
Tree of heaven (Ailanthus altissima)*
Tree poppy, Channel Island (Dendromecon
harfordii)
Tree tobacco (Nicotiana glauca)*
Trefoil, Pitch (Bituminaria bituminosa)*
Triangular-fruit sedge (Carex triquetra)
Tridens, Slim (Tridens muticus)
Triple-ribbed milkvetch (Astragalus tricarinatus)
Triteleia, Coast range (Triteleia
lugens)
Trixis, California (Trixis
californica var. californica)
True babystars (Leptosiphon bicolor)
Tubercled crowfoot (Ranunculus testiculatus)*
Tucker's oak (Quercus john-tuckeri)
Tufted evening primrose (Oenothera
cespitosa ssp. marginata)
Tufted poppy (Eschscholzia
caespitosa)
Tumble mustard (Sisymbrium altissimum)*
Turion duckweed (Lemna turionifera)
Turkey pea (Sanicula tuberosa)
Turkish rugging (Chorizanthe
staticoides)
Turpentine-broom (Thamnosma montana)
Turpentine bush (Ericameria laricifolia)
Turtleback (Psathyrotes
ramosissima)
Twayblade (Listera convallarioides)
Twiggy wreathplant (Stephanomeria virgata
ssp. virgata)
Twinberry (Lonicera involucrata var. ledebourii)
Twining snapdragon (Antirrhinum
kelloggii)
Twinleaf bedstraw (Galium bifolium)
Two-color phacelia (Phacelia bicolor)
Two-seeded milkvetch (Astragalus didymocarpus var. didymocarpus)
Two-tone everlasting (Pseudognaphalium
biolettii)
Umbrella plant (Cyperus involucratus)*
Unicorn-plant, Desert (Proboscidea althaeifolia)
Urn-flowered alumroot, see Elegant alumroot
Utah agave (Agave utahensis)
Utah fendlerbush (Fendlerella utahensis)
Utah juniper (Juniperus osteosperma)
Utah miner's lettuce (Claytonia parviflora ssp. utahensis)
Utah penstemon (Penstemon utahensis)
Utah serviceberry (Amelanchier
utahensis)
Valerian, Red (Centranthus ruber)*
Valley broomrape (Aphyllon vallicolum)
Valley cholla (Cylindropuntia bernardina)
Valley lupine (Lupinus
microcarpus var. microcarpus)
Valley mayweed (Matricaria occidentalis)
Valley oak (Quercus lobata)
Valley popcorn flower (Plagiobothrys
canescens var. canescens)
Varicolored buckwheat (Eriogonum
umbellatum var. versicolor)
Varied-leaf summer-holly (Comarostaphylis diversifolia ssp. diversifolia)
Varied milkvetch (Astragalus lentiginosus
var. variabilis)
Variegated dudleya (Dudleya variegata)
Vasey's prickly-pear (Opuntia vaseyi)
Vasey's sage (Salvia vaseyi)
Veatch's blazing star (Mentzelia veatchiana)
Velvet ash (Fraxinus velutina)
Velvet-mallow
Newberry's (Horsfordia newberryi)
Pink (Horsfordia alata)
Velvety false-lupine (Thermopsis californica
var. semota)
Ventura marsh milkvetch (Astragalus pycnostachyus var. lanosissimus)
Venus looking-glass (Triodanis biflora)
Venus thistle (Cirsium occidentale var. venustum)
Verbena,
Big-bract (Verbena
bracteata)
Goodding's (Verbena
gooddingii)
Vernal water-starwort (Callitriche palustris)
Vervain,
Mint-leaved (Verbena
menthifolia)
Robust (Verbena
lasiostachys var. scabrida)
Western (Verbena
lasiostachys var. lasiostachys)
Vetch,
American (Vicia
americana ssp. americana)
Hairy winter (Vicia villosa ssp. villosa)*
Narrow-leaved (Vicia sativa ssp. nigra)*
Slender (Vicia hassei)
Slim (Vicia ludoviciana
ssp. ludoviciana)
Spring (Vicia sativa ssp. sativa)*
Smooth winter (Vicia villosa ssp. varia)*
Viguiera, Parish's, see Parish's goldeneye
Vinegar weed (Trichostema
lanceolatum)
Violet,
Douglas's (Viola
douglasii)
Goosefoot (Viola purpurea ssp. purpurea)
Gray-leaved (Violet pinetorum ssp. grisea)
Macloskie's (Viola
macloskeyi)
Mojave goosefoot (Viola purpurea ssp. mohavensis)
Oak (Viola
purpurea ssp. quercetorum)
Pine (Viola pinetorum ssp. pinetorum)
Shelton's (Viola sheltonii)
Western dog (Viola adunca ssp. adunca)
Yellow
(Viola lobata
ssp. lobata)
Violet false-gilia (Allophyllum gilioides
ssp. violaceum)
Violet snapdragon (Antirrhinum
nuttallianum ssp. nuttallianum)
Violet twining snapdragon (Maurandella
antirrhiniflora)
Virginia peppergrass (Lepidium virginicum ssp. virginicum)
Virgin River cryptantha (Oreocarya
virginensis)
Virgin's bower (Clematis ligusticifolia)
Viscid lip fern (Myriopteris viscida)
Volcanic gilia (Gilia ochroleuca ssp. ochroleuca)
Walker's sun cup (Chylismia walkeri ssp. tortilis)
Wall bedstraw (Galium parisiense)*
Wallflower,
Island (Erysimum
insulare)
Suffrutescent (Erysimum suffrutescens)
Western (Erysimum
capitatum var. capitatum)
Walnut,
California black (female flowers) (Juglans
californica var. californica)
California black (fruit) (Juglans
californica var. californica)
California black (male flowers) (Juglans
californica var. californica)
Wand buckwheat (Eriogonum roseum)
Wand mullein (Verbascum virgatum)*
Wand wirelettuce (Stephanomeria virgata
ssp. pleurocarpa)
Warner Springs lessingia (Lessingia
glandulifera var. tomentosa)
Warrior's plume (Pedicularis
densiflora)
Wart cress (Lepidium didymum)*
Wartleaf ceanothus (Ceanothus papillosus)
Wartstem ceanothus (Ceanothus verrucosus)
Warty spurge (Euphorbia spathulata)
Water buttercup (Ranunculus aquatilis var.
diffusus)
Water chickweed (Montia fontana)
Watercress (Nasturtium officinale)
Water-milfoil, Siberian (Myriophyllum sibiricum)
Water-parsley (Oenanthe sarmentosa)
Water parsnip (Berula erecta)
Water pennywort (Hydrocotyle verticillata)
Water pepper (Persicaria hydropiper)
Water-pimpernel (Samolus parviflorus)
Water plantain (Alisma triviale)
Water-plantain buttercup, Small (Ranunculus
alismifolius var. alismellus)
Water pygmy weed (Crassula aquatica)
Water smartweed (Persicaria punctata)
Water speedwell (Veronica anagallis-aquatica)*
Water-starwort
[Common]
(Callitriche heterophylla
var. bolanderi)
Vernal (Callitriche palustris)
Waterweed, Western (Elodea nuttallii)
Wattle,
Cootamundra (Acacia
baileyana)*
Golden (Acacia longifolia)*
Watson's saltbush (Atriplex watsonii)
Watson's spike-moss (Selaginella watsonii)
Wavyleaf bee blossom (Oenothera sinuosa)*
Wax currant (Ribes cereum var. cereum)
Wax-myrtle, California (Morella californica)
Waxy saltbush (Atriplex glauca)*
Weak bluegrass (Poa infirma)*
Wedge-leaf horkelia (Horkelia cuneata var. cuneata)
Weed's mariposa lily (Calochortus weedii
var. weedii)
Weedy cudweed (Pseudognaphalium luteoalbum)*
Weeping love grass (Eragrostis curvula)*
Western azalea (Rhododendron occidentale)
Western bistort (Bistorta bistortoides)
Western blue flag (Iris missouriensis)
Western blue flax (Linum lewisii var.
lewisii)
Western bog yellowcress (Rorippa
palustris ssp. palustris)
Western buttercup (Ranunculus occidentalis)
Western chokecherry (Prunus virginiana
var. demissa)
Western cowbane (Oxypolis occidentalis)
Western dichondra (Dichondra occidentalis)
Western dog violet (Viola adunca ssp. adunca)
Western false-indigo (Amorpha fruticosa)
Western field dodder (Cuscuta campestris)
Western gilia (Gilia aliquanta ssp. breviloba)
Western goldenrod (Euthamia occidentalis)
Western hackberry (Celtis reticulata)
Western hawksbeard (Crepis occidentalis)
Western lady's mantle (Aphanes occidentalis)
Western lanceleaf aster (Symphyotrichum lanceolatum
ssp. hesperium)
Western maidenhair fern, see Five-finger fern
Western morning glory (Calystegia
occidentalis ssp. fulcrata)
Western mountain aster (Symphyotrichum spathulatum var. spathulatum)
Western needlegrass (Stipa occidentalis ssp. occidentalis)
Western pearlwort (Sagina decumbens ssp. occidentalis)
Western poison oak (Toxicodendron
diversilobum)
Western polypody (Polypodium hesperium)
Western ragweed (Ambrosia psilostachya)
Western raspberry (Rubus leucodermis)
Western redbud (Cercis
occidentalis)
Western rough sedge (Carex senta)
Western sky pilot (Polemonium occidentale)
Western snakeroot (Ageratina occidentalis)
Western sword fern (Polystichum munitum)
Western sycamore (Platanus racemosa)
Western tansy mustard (Descurainia pinnata ssp. brachycarpa)
Western toad rush (Juncus bufonius var.
occidentalis)
Western vervain (Verbena
lasiostachys var. lasiostachys)
Western wallflower (Erysimum
capitatum var. capitatum)
Western waterweed (Elodea nuttallii)
Weston's buckwheat (Eriogonum nudum var.
westonii)
Wheat grass,
Desert crested (Agropyron
cristatum ssp. pectinatum)*
Intermediate (Elymus hispidus)*
Slender (Elymus trachycaulus ssp. trachycaulus)
Tall (Elymus ponticus)*
Wheeler's cinquefoil (Potentilla wheeleri)
Wheelscale saltbush (Atriplex elegans var. fasciculata)
Whiskerbrush (Leptosiphon ciliatus)
Whispering bells (Emmenanthe
penduliflora)
White alder (Alnus rhombifolia)
White catchfly (Silene verecunda)
White caterpillar phacelia (Phacelia cicutaria var. cicutaria)
White clover (Trifolium repens)*
White easter bonnets (Eriophyllum lanosum)
White false-gilia (Allophyllum integrifolium)
White fiesta flower (Pholistoma membranaceum)
White fir (Abies concolor)
White-flowered bluecup (Githopsis
diffusa ssp. candida)
White-flowered bog orchid (Platanthera
dilatata var. leucostachys)
White-flowered filaree (California macrophylla)
White-flowered hawkweed (Hieracium
albiflorum)
White-flowered rabbitbrush (Ericameria albida)
White-flowered rock-rose (Cistus
ladanifer var. albiflorus)*
White-flowering currant (Ribes
indecorum)
White hedge-nettle (Stachys albens)
White-leaf monardella (Monardella
hypoleuca ssp. hypoleuca)
White mallow (Eremalche exilis)
Whitemargin oxytheca (Sidotheca emarginata)
White Mountains horkelia (Horkelia hispidula)
White Mountains milkvetch (Astragalus lentiginosus var. semotus)
White Mountains wild buckwheat (Eriogonum gracilipes)
White nightshade (Solanum
douglasii)
White pincushion (Chaenactis
artemisiifolia)
Whiteplume wirelettuce (Stephanomeria exigua
ssp. coronaria)
White rhatany (Krameria
bicolor)
White sage (Salvia apiana)
White sand-verbena (Abronia turbinata)
White snapdragon (Antirrhinum
coulterianum)
White snowberry (Symphoricarpos albus var. laevigatus)
Whitestem blazing star (Mentzelia
albicaulis)
White-stem filaree (Erodium moschatum)*
White-stemmed milkweed (Asclepias
albicans)
White sticky phacelia (Phacelia viscida var. albiflora)
White sweetclover (Melilotus albus)*
White tackstem (Calycoseris wrightii)
Whitethorn,
Chaparral (Ceanothus
leucodermis)
Mountain (Ceanothus
cordulatus)
White tidy tips (Layia glandulosa)
Whitetip clover (Trifolium variegatum)
White-veined wintergreen (Pyrola
picta)
White-whorled lupine (Lupinus microcarpus var. densiflorus)
Whitney's locoweed (Astragalus whitneyi
var. whitneyi)
Whorled dock (Rumex conglomeratus)*
Whorl-leaf penstemon (Keckiella ternata
var. ternata)
Wide-leaved Parish's yampah (Perideridia
parishii ssp. latifolia)
Wide-leaved rock goldenbush (Ericameria
cuneata var. spathulata)
Wiggins's croton (Croton wigginsii)
Wilcox's woolstar (Eriastrum wilcoxii)
Wild cabbage,
Slender (Caulanthus
major)
Thickstem (Caulanthus
crassicaulis)
Wild carrot, American (Daucus
pusillus)
Wild celery (Apiastrum angustifolium)
Wild cucumber (Marah
macrocarpa)
Wild grape (Vitis girdiana)
Wild heliotrope (Heliotropium
curassavicum var. oculatum)
Wild licorice (Glycyrrhiza
lepidota)
Wild mock orange (Philadelphus lewisii)
Wild oxalis (Oxalis pilosa)
Wild peony (Paeonia californica)
Wild peppergrass (Lepidium virginicum
ssp. menziesii)
Wild petunia (Petunia parviflora)
Wild radish (Raphanus sativus)*
Wild-rhubarb (Rumex hymenosepalus)
Wild rose (Rosa californica)
Wildrose Canyon buckwheat (Eriogonum
eremicola)
Wildrye,
Blue (Elymus glaucus
ssp. glaucus)
Creeping (Elymus
triticoides)
Giant (Elymus condensatus)
Great Basin (Elymus
cinereus)
Pacific (Elymus
pacificus)
Wild strawberry (Fragaria
vesca)
Wild tarragon (Artemisia dracunculus)
Willow,
Arroyo (Salix lasiolepis)
Desert (Chilopsis
linearis ssp. arcuata)
Geyer's (Salix geyeriana)
Goodding's black (Salix
gooddingii)
Hinds' narrowleaf (Salix exigua var. hindsiana)
Lemmon's (Salix
lemmonii)
Red (Salix laevigata)
Sandbar (Salix exigua var. exigua)
Scouler's (Salix
scouleriana)
Shining (Salix lasiandra var. lasiandra)
Willow baccharis (Baccharis salicina)
Willow-herb,
[Common] (Epilobium
ciliatum ssp. ciliatum)
Field (Epilobium
brachycarpum)
Glandular (Epilobium
ciliatum ssp. glandulosum)
Hall's (Epilobium hallianum)
Milkflower (Epilobium lactiflorum)
Oregon (Epilobium oregonense)
Smooth (Epilobium
glaberrimum ssp. glaberrimum)
Willowleaf lettuce (Lactuca saligna)*
Willow-leaved dock (Rumex californicus)
Willow smartweed (Persicaria lapathifolia)
Willowy monardella (Monardella viminea)
Windflower, Desert (Anemone tuberosa)
Winding mariposa lily (Calochortus flexuosus)
Windmill pink (Silene gallica)*
Windmills
Hairy (Allionia incarnata var. villosa)
Trailing
(Allionia incarnata var. incarnata)
Wind poppy (Papaver
heterophyllum)
Winged cryptantha (Johnstonella holoptera)
Winged pectocarya (Pectocarya penicillata)
Wingfruit sun cup (Chylismiella pterosperma)
Wingnut cryptantha (Cryptantha pterocarya)
Winter cress (Barbarea
orthoceras)
Winterfat (Krascheninnikovia
lanata)
Wintergreen,
Bog (Pyrola asarifolia
ssp. asarifolia)
Lesser (Pyrola minor)
Toothed (Pyrola dentata)
White-veined (Pyrola
picta)
Winter vetch,
Hairy (Vicia villosa ssp. villosa)*
Smooth (Vicia villosa ssp. varia)*
Wirelettuce,
Deane's (Stephanomeria
exigua ssp. deanei)
Parry's (Stephanomeria parryi)
Small wirelettuce (Stephanomeria exigua ssp. exigua)
Wand (Stephanomeria
virgata ssp. pleurocarpa)
Whiteplume (Stephanomeria
exigua ssp. coronaria)
Wire rush (Juncus balticus)
Wireweed (Rigiopappus leptocladus)
Wishbone bush (Mirabilis
laevis var. crassifolia)
Wolf's cholla (Cylindropuntia wolfii)
Woodland-gilia
Grant's (Saltugilia splendens ssp. grantii)
Latimer's (Saltugilia latimeri)
Southern (Saltugilia australis)
Splendid (Saltugilia splendens ssp. splendens)
Woodland spurge (Euphorbia lurida)
Woodland star,
Bolander's (Lithophragma bolanderi)
[Common] (Lithophragma
affine)
Hillside (Lithophragma heterophyllum)
Mission (Lithophragma cymbalaria)
Slender (Lithophragma
tenellum)
Smallflower (Lithophragma parviflorum var. parviflorum)
Wood rose (Rosa gymnocarpa var. gymnocarpa)
Wood rush, Hairy (Luzula comosa)
Wood sorrel,
Creeping (Oxalis corniculata)*
Hairy (Oxalis pilosa)
Woody crinklemat (Tiquilia canescens var. canescens)
Woolly amsonia (Amsonia tomentosa)
Woolly angelica (Angelica tomentosa)
Woolly bluecurls (Trichostema
lanatum)
Woolly brickellbush (Brickellia incana)
Woolly bur-sage (Ambrosia eriocentra)
Woolly chaparral pea (Pickeringia montana
var. tomentosa)
Woolly daisy (Eriophyllum
wallacei)
Woolly-fruited milkweed (Asclepias eriocarpa)
Woollyhead neststraw (Stylocline micropoides)
Woollyheads,
Dwarf (Psilocarphus
brevissimus var. brevissimus)
Slender (Psilocarphus
tenellus)
Woollyleaf ceanothus (Ceanothus tomentosus)
Woolly lomatium (Lomatium dasycarpum ssp.
dasycarpum)
Woolly marigold (Baileya pleniradiata)
Woolly milkweed (Asclepias vestita)
Woolly mountain parsley (Oreonana
vestita)
Woolly mullein (Verbascum thapsus)*
Woolly paintbrush (Castilleja
foliolosa)
Woolly plantain (Plantago ovata var. fastigiata)
Woollypod, Bear Valley (Astragalus
leucolobus)
Woollypod milkvetch (Astragalus purshii var. tinctus)
Woolly sea-blite (Suaeda taxifolia)
Woolly sedge (Carex pellita)
Woolly sunflower,
[Common]
(Eriophyllum lanatum
var. obovatum)
Many-stem (Eriophyllum multicaule)
Nevin's (Constancea
nevinii)
Pringle's (Eriophyllum
pringlei)
Woolstar,
Desert (Eriastrum
eremicum ssp. eremicum)
Few-flowered (Eriastrum
sparsiflorum)
Giant (Eriastrum densifolium ssp. elongatum)
Harwood's (Eriastrum harwoodii)
Maroon-spotted (Eriastrum signatum)
Miniature (Eriastrum
diffusum)
Mojave (Eriastrum
densifolium ssp. mohavense)
Santa Ana River (Eriastrum
densifolium ssp. sanctorum)
Sapphire (Eriastrum
sapphirinum ssp. sapphirinum)
Shaggy-flowered (Eriastrum sapphirinum ssp. dasyanthum)
Southern mountain (Eriastrum
densifolium ssp. austromontanum)
Tracy's (Eriastrum tracyi)
Wilcox's (Eriastrum
wilcoxii)
Wooton's lip fern (Myriopteris wootonii)
Wormwood,
Mountain (Artemisia ludoviciana ssp. incompta)
Silver (Artemisia ludoviciana ssp. ludoviciana)
Wreathplant,
San Diego (Stephanomeria
diegensis)
Twiggy (Stephanomeria
virgata ssp. virgata)
Wright's bastard-sage (Eriogonum wrightii var. wrightii)
Wright's bedstraw (Galium wrightii)
Wright's beebrush (Aloysia wrightii)
Wright's buckwheat, see bastard-sage
Wright's collinsia (Collinsia torreyi
var. wrightii)
Wright's cudweed (Pseudognaphalium canescens)
Wright's spiderling (Boerhavia wrightii)
Wright's thimblehead (Hymenothrix wrightii)
Wrinkled rush (Juncus rugulosus)
Wrinkled spineflower (Chorizanthe corrugata)
Xantus pincushion (Chaenactis xantiana)
Xantus' spineflower (Chorizanthe xanti var. xanti)
Yampah,
Adobe (Perideridia pringlei)
Parish's (Perideridia parishii ssp. parishii)
Wide-leaved Parish's (Perideridia
parishii ssp. latifolia)
Yarrow,
[Common] (Achillea
millefolium)
Golden (Eriophyllum
confertiflorum var. confertiflorum)
Yellow bird-of-paradise (Caesalpinia
gilliesii)*
Yellow carpet (Blennosperma nanum var. nanum)
Yellow comet (Mentzelia affinis)
Yellowcress,
Bluntleaf (Rorippa curvipes)
Curvepod yellowcress (Rorippa curvisiliqua)
Round-fruit (Rorippa sphaerocarpa)
Western bog (Rorippa
palustris ssp. palustris)
Yellow cryptantha (Cryptantha confertiflora)
Yellow cups (Chylismia
brevipes ssp. brevipes)
Yellow-eyed grass (Sisyrinchium elmeri)
Yellow-eyed lupine (Lupinus flavoculatus)
Yellow-frocks (Eriophyllum
ambiguum var. paleaceum)
Yellowheads (Trichoptilium incisum)
Yellow mariposa lily (Calochortus
clavatus var. pallidus)
Yellow monkeyflower (Diplacus
brevipes)
Yellow paintbrush (Castilleja plagiotoma)
Yellow penstemon (Keckiella antirrhinoides
var. antirrhinoides)
Yellow peppergrass (Lepidium flavum)
Yellow pincushion (Chaenactis
glabriuscula var. glabriuscula)
Yellow pine (Pinus ponderosa var. pacifica)
Yellow salsify (Tragopogon dubius)*
Yellow saucers (Malacothrix sonchoides)
Yellow star thistle (Centaurea solstitialis)*
Yellow sweetclover (Melilotus officinalis)*
Yellow tackstem (Calycoseris
parryi)
Yellow-throated phacelia (Phacelia
brachyloba)
Yellow tidy tips (Layia
platyglossa)
Yellow turban (Eriogonum pusillum)
Yellow violet (Viola lobata ssp. lobata)
Yellow water-weed (Ludwigia peploides)*
Yerba amarilla (Mentzelia longiloba)
Yerba buena (Clinopodium douglasii)
Yerba mansa (Anemopsis californica)
Yerba santa,
Bicolored (Eriodictyon crassifolium var. nigrescens)
Hairy (Eriodictyon
trichocalyx var. trichocalyx)
San Diego (Eriodictyon
trichocalyx var. lanatum)
Thickleaf (Eriodictyon
crassifolium var. crassifolium)
Trask's (Eriodictyon
traskiae ssp. smithii)
Yosemite rock-cress (Boechera repanda)
Yucca,
Banana (Yucca baccata var. baccata)
Chaparral (Hesperoyucca
whipplei)
Mojave (Yucca
schidigera)
Yuma spurge (Euphorbia setiloba)
Zaca Lake manzanita, see Eastwood manzanita
Ziegler's aster (Dieteria canescens
var. ziegleri)
Zig-zag groundsmoke (Gayophytum heterozygum)
Zygadene, Desert (Zigadenus brevibracteatus) |
