Scientific Name | Common Name | |
Taeniatherum asperum (Under Elymus caput-medusae) | | Synonym |
Taeniatherum caput-medusae (Under Elymus caput-medusae) | | Synonym |
Tagetes ↳ Key to Tagetes | MARIGOLD | |
Tagetes erecta | AFRICAN or FRENCH MARIGOLD | Waif |
Tagetes minuta | WILD MARIGOLD | Naturalized |
Tagetes patula (Under Tagetes erecta) | | Synonym |
Talinum pygmaeum (Under Lewisia pygmaea) | | Synonym |
Tamaricaceae | TAMARISK FAMILY | |
Tamarix ↳ Key to Tamarix | TAMARISK, SALTCEDAR | |
Tamarix aphylla | ATHEL | Naturalized |
Tamarix chinensis | FIVESTAMEN TAMARISK | Naturalized |
Tamarix gallica | FRENCH TAMARISK | Naturalized |
Tamarix parviflora | SMALLFLOWER TAMARISK | Naturalized |
Tamarix pentandra (Under Tamarix ramosissima) | | Synonym |
Tamarix ramosissima | SALTCEDAR | Naturalized |
Tanacetum ↳ Key to Tanacetum | TANSY | |
Tanacetum bipinnatum | DUNE TANSY | Native |
Tanacetum camphoratum (Under Tanacetum bipinnatum) | | Synonym |
Tanacetum canum (Under Sphaeromeria cana) | | Synonym |
Tanacetum parthenium | FEVERFEW | Naturalized |
Tanacetum vulgare | COMMON TANSY | Naturalized |
Taraxacum ↳ Key to Taraxacum | DANDELION | |
Taraxacum californicum | CALIFORNIA DANDELION | Native |
Taraxacum ceratophorum | HORNED DANDELION | Native |
Taraxacum ceratophorum var. bernardinum (Under Taraxacum californicum) | | Synonym |
Taraxacum erythrospermum | RED-SEEDED DANDELION | Naturalized |
Taraxacum laevigatum (Under Taraxacum erythrospermum) | | Unabridged misapplied name |
Taraxacum laevigatum (Under Taraxacum officinale) | | Synonym |
Taraxacum laevigatum var. erythrospermum (Under Taraxacum erythrospermum) | | Synonym |
Taraxacum officinale | COMMON DANDELION | Naturalized |
Taraxacum officinale subsp. ceratophorum (Under Taraxacum ceratophorum) | | Synonym |
Taraxacum officinale var. erythrospermum (Under Taraxacum erythrospermum) | | Synonym |
Taraxia ↳ Key to Taraxia | | |
Taraxia ovata | | Native |
Taraxia subacaulis | | Native |
Taraxia tanacetifolia | | Native |
Tauschia ↳ Key to Tauschia | | |
Tauschia arguta | | Native |
Tauschia glauca | GLAUCOUS TAUSCHIA | Native |
Tauschia hartwegii | | Native |
Tauschia howellii | HOWELL'S TAUSCHIA | Native |
Tauschia kelloggii | | Native |
Tauschia parishii | | Native |
Taxaceae ↳ Key to Taxaceae | YEW FAMILY | |
Taxus | YEW | |
Taxus brevifolia | PACIFIC YEW | Native |
Taxus brevifolia var. brevifolia (Under Taxus brevifolia) | | Synonym |
Taxus brevifolia var. polychaeta (Under Taxus brevifolia) | | Synonym |
Taxus brevifolia var. reptaneta (Under Taxus brevifolia) | | Synonym |
Tecophilaeaceae | TECOPHILAEA FAMILY | |
Teesdalia ↳ Key to Teesdalia | | |
Teesdalia coronopifolia | | Waif |
Teesdalia nudicaulis | | Naturalized |
Tellima | FRINGE CUPS | |
Tellima grandiflora | | Native |
Tetracoccus ↳ Key to Tetracoccus | | |
Tetracoccus dioicus | PARRY'S TETRACOCCUS | Native |
Tetracoccus hallii | HALL'S TETRACOCCUS | Native |
Tetracoccus ilicifolius | HOLLY-LEAVED TETRACOCCUS | Native |
Tetradymia ↳ Key to Tetradymia | COTTONTHORN, HORSEBRUSH | |
Tetradymia argyraea | STRIPED HORSEBRUSH | Native |
Tetradymia axillaris | | Native |
Tetradymia axillaris var. axillaris | | Native |
Tetradymia axillaris var. longispina | | Native |
Tetradymia canescens | | Native |
Tetradymia comosa | | Native |
Tetradymia glabrata | | Native |
Tetradymia spinosa | | Native |
Tetradymia stenolepis | | Native |
Tetradymia tetrameres | DUNE HORSEBRUSH | Native |
Tetragonia | | |
Tetragonia expansa (Under Tetragonia tetragonoides) | | Synonym |
Tetragonia tetragonoides | NEW ZEALAND SPINACH | Naturalized |
Tetraneuris | | |
Tetraneuris acaulis var. arizonica | | Native |
Tetraneuris acaulis var. nana (Under Tetraneuris acaulis var. arizonica) | | Synonym |
Tetrapteron ↳ Key to Tetrapteron | | |
Tetrapteron graciliflorum | HILL SUN CUP | Native |
Tetrapteron palmeri | | Native |
Teucrium ↳ Key to Teucrium | | |
Teucrium cubense subsp. depressum | DWARF GERMANDER | Native |
Teucrium cubense var. densum (Under Teucrium cubense subsp. depressum) | | Synonym |
Teucrium glandulosum | DESERT GERMANDER | Native |
Teutliopsis patula (Under Atriplex patula) | | Synonym |
Thalictrum ↳ Key to Thalictrum | MEADOW-RUE | |
Thalictrum alpinum | ARCTIC MEADOW-RUE | Native |
Thalictrum fendleri | | Native |
Thalictrum fendleri var. fendleri | | Native |
Thalictrum fendleri var. polycarpum | | Native |
Thalictrum occidentale | | Native |
Thalictrum occidentale var. palousense (Under Thalictrum occidentale) | | Synonym |
Thalictrum polycarpum (Under Thalictrum fendleri var. polycarpum) | | Synonym |
Thalictrum sparsiflorum | | Native |
Thamnosma | TURPENTINE-BROOM | |
Thamnosma montana | | Native |
Thelaia aphylla (Under Pyrola aphylla) | | Synonym |
Thelesperma | GREENTHREAD | |
Thelesperma megapotamicum | RAYLESS GREENTHREAD | Waif |
Thelypodium ↳ Key to Thelypodium | | |
Thelypodium brachycarpum | SHORT-PODDED THELYPODIUM | Native |
Thelypodium cooperi (Under Caulanthus cooperi) | | Synonym |
Thelypodium crispum | | Native |
Thelypodium flavescens (Under Caulanthus flavescens) | | Synonym |
Thelypodium flexuosum | | Native |
Thelypodium howellii subsp. howellii | HOWELL'S THELYPODIUM | Native |
Thelypodium integrifolium | | Native |
Thelypodium integrifolium subsp. affine | | Native |
Thelypodium integrifolium subsp. complanatum | FOXTAIL THELYPODIUM | Native |
Thelypodium jaegeri (Under Hesperidanthus jaegeri) | | Synonym |
Thelypodium laciniatum | | Native |
Thelypodium laciniatum var. milleflorum (Under Thelypodium milleflorum) | | Synonym |
Thelypodium lasiophyllum (Under Caulanthus lasiophyllus) | | Synonym |
Thelypodium lasiophyllum var. inalienum (Under Caulanthus lasiophyllus) | | Synonym |
Thelypodium lasiophyllum var. lasiophyllum (Under Caulanthus lasiophyllus) | | Synonym |
Thelypodium lasiophyllum var. rigidum (Under Caulanthus lasiophyllus) | | Synonym |
Thelypodium lasiophyllum var. utahense (Under Caulanthus lasiophyllus) | | Synonym |
Thelypodium lemmonii (Under Caulanthus anceps) | | Synonym |
Thelypodium milleflorum | MANY-FLOWERED THELYPODIUM | Native |
Thelypodium stenopetalum | SLENDER-PETALED THELYPODIUM | Native |
Thelypteridaceae ↳ Key to Thelypteridaceae | THELYPTERIS FAMILY | |
Thelypteris nevadensis (Under Amauropelta nevadensis) | | Synonym |
Thelypteris puberula var. sonorensis (Under Pelazoneuron puberulum var. sonorense) | | Synonym |
Themidaceae ↳ Key to Themidaceae | BRODIAEA FAMILY | |
Theophrastaceae | THEOPHRASTA FAMILY | |
Thermopsis ↳ Key to Thermopsis | GOLDEN PEA, FALSE-LUPINE | |
Thermopsis argentata (Under Thermopsis californica var. argentata) | | Synonym |
Thermopsis californica | | Native |
Thermopsis californica var. argentata | SILVERY FALSE-LUPINE | Native |
Thermopsis californica var. californica | | Native |
Thermopsis californica var. semota | VELVETY FALSE-LUPINE | Native |
Thermopsis gracilis | | Native |
Thermopsis macrophylla | SANTA YNEZ FALSE-LUPINE | Native |
Thermopsis macrophylla var. agnina (Under Thermopsis macrophylla) | | Synonym |
Thermopsis macrophylla var. argentata (Under Thermopsis californica var. argentata) | | Synonym |
Thermopsis macrophylla var. macrophylla (Under Thermopsis macrophylla) | | Synonym |
Thermopsis macrophylla var. semota (Under Thermopsis californica var. semota) | | Synonym |
Thermopsis macrophylla var. venosa (Under Thermopsis gracilis) | | Synonym |
Thermopsis robusta | ROBUST FALSE-LUPINE | Native |
Thinopyrum intermedium (Under Elymus hispidus) | | Synonym |
Thinopyrum intermedium subsp. barbulatum (Under Elymus hispidus) | | Synonym |
Thinopyrum ponticum (Under Elymus ponticus) | | Synonym |
Thlaspi | PENNYCRESS | |
Thlaspi alpestre var. californicum (Under Noccaea fendleri subsp. californica) | | Synonym |
Thlaspi alpestre var. glaucum (Under Noccaea fendleri subsp. glauca) | | Synonym |
Thlaspi arvense | | Naturalized |
Thlaspi californicum (Under Noccaea fendleri subsp. californica) | | Synonym |
Thlaspi fendleri (Under Noccaea fendleri) | | Synonym |
Thlaspi fendleri var. glaucum (Under Noccaea fendleri subsp. glauca) | | Synonym |
Thlaspi glaucum subsp. californicum (Under Noccaea fendleri subsp. californica) | | Synonym |
Thlaspi montanum var. californicum (Under Noccaea fendleri subsp. californica) | | Synonym |
Thlaspi montanum var. fendleri (Under Noccaea fendleri) | | Synonym |
Thlaspi montanum var. montanum (Under Noccaea fendleri subsp. glauca) | | Synonym |
Thuja | ARBORVITAE | |
Thuja plicata | WESTERN RED CEDAR, CANOE CEDAR | Native |
Thymelaeaceae | DAPHNE FAMILY | |
Thymophylla ↳ Key to Thymophylla | | |
Thymophylla pentachaeta var. belenidium | | Native |
Thymophylla tenuiloba var. tenuiloba | | Waif |
Thysanocarpus ↳ Key to Thysanocarpus | LACEPOD, FRINGEPOD | |
Thysanocarpus amplectens (Under Thysanocarpus curvipes subsp. amplectens) | | Synonym |
Thysanocarpus conchuliferus | SANTA CRUZ ISLAND FRINGEPOD | Native |
Thysanocarpus curvipes | | Native |
Thysanocarpus curvipes (Under Thysanocarpus curvipes subsp. amplectens) | | Synonym, in part |
Thysanocarpus curvipes (Under Thysanocarpus curvipes subsp. curvipes) | | Synonym, in part |
Thysanocarpus curvipes (Under Thysanocarpus curvipes subsp. elegans) | | Synonym, in part |
Thysanocarpus curvipes (Under Thysanocarpus curvipes subsp. eradiatus) | | Synonym, in part |
Thysanocarpus curvipes (Under Thysanocarpus curvipes subsp. longistylus) | | Synonym, in part |
Thysanocarpus curvipes subsp. amplectens | | Native |
Thysanocarpus curvipes subsp. curvipes | | Native |
Thysanocarpus curvipes subsp. elegans | | Native |
Thysanocarpus curvipes subsp. eradiatus | | Native |
Thysanocarpus curvipes subsp. longistylus | | Native |
Thysanocarpus curvipes var. curvipes (Under Thysanocarpus curvipes subsp. curvipes) | | Synonym |
Thysanocarpus curvipes var. eradiatus (Under Thysanocarpus curvipes subsp. eradiatus) | | Synonym |
Thysanocarpus curvipes var. longistylus (Under Thysanocarpus curvipes subsp. longistylus) | | Synonym |
Thysanocarpus desertorum | | Native |
Thysanocarpus elegans (Under Thysanocarpus curvipes subsp. elegans) | | Synonym |
Thysanocarpus laciniatus | | Native |
Thysanocarpus laciniatus var. conchuliferus (Under Thysanocarpus conchuliferus) | | Synonym |
Thysanocarpus laciniatus var. hitchcockii (Under Thysanocarpus desertorum) | | Synonym |
Thysanocarpus laciniatus var. laciniatus (Under Thysanocarpus laciniatus) | | Synonym |
Thysanocarpus laciniatus var. rigidus (Under Thysanocarpus rigidus) | | Synonym |
Thysanocarpus pusillus (Under Athysanus pusillus) | | Synonym |
Thysanocarpus radians | | Native |
Thysanocarpus radians var. montanus (Under Thysanocarpus radians) | | Synonym |
Thysanocarpus rigidus | | Native |
Tiarella | SUGAR-SCOOP | |
Tiarella trifoliata ↳ Key to Tiarella trifoliata | LACE FLOWER | Native |
Tiarella trifoliata var. trifoliata | | Native |
Tiarella trifoliata var. unifoliata | | Native |
Tidestromia ↳ Key to Tidestromia | | |
Tidestromia lanuginosa | WOOLLY TIDESTROMIA | Native |
Tidestromia lanuginosa subsp. eliassoniana (Under Tidestromia lanuginosa) | | Synonym |
Tidestromia oblongifolia (Under Tidestromia suffruticosa var. oblongifolia) | | Synonym |
Tidestromia oblongifolia subsp. cryptantha (Under Tidestromia suffruticosa var. oblongifolia) | | Synonym |
Tidestromia suffruticosa var. oblongifolia | HONEYSWEET | Native |
Tillaea aquatica (Under Crassula aquatica) | | Synonym |
Tillaea erecta (Under Crassula connata) | | Synonym |
Tillaea muscosa (Under Crassula tillaea) | | Synonym |
Tiniaria convolvulus (Under Fallopia convolvulus) | | Synonym |
Tiniaria japonica (Under Fallopia japonica) | | Synonym |
Tiniaria sachalinensis (Under Fallopia sachalinensis) | | Synonym |
Tiquilia ↳ Key to Tiquilia | | |
Tiquilia canescens | SHRUBBY TIQUILIA | Native |
Tiquilia canescens var. canescens | | Native |
Tiquilia canescens var. pulchella | | Native |
Tiquilia nuttallii | ANNUAL TIQUILIA | Native |
Tiquilia palmeri | PALMER'S TIQUILIA | Native |
Tiquilia plicata | FAN-LEAVED TIQUILIA | Native |
Toelkenia ovata (Under Crassula ovata) | | Synonym |
Tofieldia occidentalis subsp. occidentalis (Under Triantha occidentalis subsp. occidentalis) | | Synonym |
Tofieldiaceae | FALSE-ASPHODEL FAMILY | |
Tolmiea | PIG-A-BACK PLANT | |
Tolmiea diplomenziesii | | Native |
Tolpis | | |
Tolpis barbata | | Naturalized |
Tolpis umbellata (Under Tolpis barbata) | | Synonym |
Tonella | | |
Tonella tenella | | Native |
Tonestus ↳ Key to Tonestus | | |
Tonestus eximius | TAHOE TONESTUS | Native |
Tonestus lyallii | LYALL'S TONESTUS | Native |
Tonestus peirsonii | PEIRSON'S TONESTUS | Native |
Torilis ↳ Key to Torilis | | |
Torilis arvensis | TALL SOCK-DESTROYER | Naturalized |
Torilis arvensis subsp. purpurea (Under Torilis arvensis) | | Synonym |
Torilis nodosa | SHORT SOCK-DESTROYER | Naturalized |
Torreya | TORREYA | |
Torreya californica | CALIFORNIA-NUTMEG | Native |
Torreya myristica (Under Torreya californica) | | Synonym |
Torreyochloa ↳ Key to Torreyochloa | FALSE MANNA GRASS | |
Torreyochloa erecta | | Native |
Torreyochloa pallida var. pauciflora | WEAK MANNA GRASS | Native |
Torreyostellaria | | |
Torreyostellaria jamesiana | TUBER STARWORT | Native |
Townsendia ↳ Key to Townsendia | | |
Townsendia condensata | CUSHION TOWNSENDIA | Native |
Townsendia leptotes | SLENDER TOWNSENDIA | Native |
Townsendia scapigera | | Native |
Toxicodendron | POISON OAK, POISON IVY | |
Toxicodendron diversilobum | WESTERN POISON OAK | Native |
Toxicodendron trilobatum (Under Rhus aromatica) | | Synonym |
Toxicodendron triphyllum var. trilobatum (Under Rhus aromatica) | | Invalid name |
Toxicoscordion ↳ Key to Toxicoscordion | DEATH CAMAS | |
Toxicoscordion brevibracteatum | | Native |
Toxicoscordion exaltatum | | Native |
Toxicoscordion fontanum | | Native |
Toxicoscordion fremontii | | Native |
Toxicoscordion micranthum | | Native |
Toxicoscordion paniculatum | | Native |
Toxicoscordion venenosum var. venenosum | | Native |
Tracyina | | |
Tracyina rostrata | BEAKED TRACYINA | Native |
Tradescantia ↳ Key to Tradescantia | | |
Tradescantia fluminensis | | Naturalized |
Tradescantia ohiensis | | Waif |
Tradescantia virginiana (Under Tradescantia ohiensis) | | Misapplied name |
Tragia | NOSEBURN | |
Tragia ramosa | DESERT TRAGIA | Native |
Tragia stylaris (Under Tragia ramosa) | | Synonym |
Tragopogon ↳ Key to Tragopogon | GOAT'S BEARD, SALSIFY | |
Tragopogon dubius | YELLOW SALSIFY | Naturalized |
Tragopogon porrifolius | SALSIFY, OYSTER PLANT | Naturalized |
Tragopogon pratensis | MEADOW SALSIFY | Naturalized |
Transberingia | | |
Transberingia bursifolia subsp. virgata | VIRGATE HALIMOLOBOS | Native |
Trautvetteria | | |
Trautvetteria caroliniensis | | Native |
Trautvetteria caroliniensis var. occidentalis (Under Trautvetteria caroliniensis) | | Synonym |
Trautvetteria grandis (Under Trautvetteria caroliniensis) | | Synonym |
Triadica | TALLOWTREE | |
Triadica sebifera | CHINESE TALLOWTREE | Naturalized |
Triantha | | |
Triantha occidentalis subsp. occidentalis | | Native |
Trianthema | HORSE-PURSLANE | |
Trianthema portulacastrum | | Native |
Tribulus | PUNCTURE VINE, CALTROP | |
Tribulus terrestris | | Naturalized |
Tricardia | | |
Tricardia watsonii | | Native |
Trichachne californica (Under Digitaria californica var. californica) | | Synonym |
Trichocoronis | | |
Trichocoronis riparia (Under Trichocoronis wrightii var. wrightii) | | Synonym |
Trichocoronis wrightii var. wrightii | WRIGHT'S TRICHOCORONIS | Native or naturalized |
Tricholaena rosea (Under Melinis repens subsp. repens) | | Synonym |
Trichophorum ↳ Key to Trichophorum | | |
Trichophorum clementis | | Native |
Trichophorum emergens (Under Trichophorum pumilum) | | Synonym |
Trichophorum pumilum | LITTLE BULRUSH | Native |
Trichophorum pumilum var. rollandii (Under Trichophorum pumilum) | | Synonym |
Trichoptilium | | |
Trichoptilium incisum | | Native |
Trichostema ↳ Key to Trichostema | BLUE CURLS | |
Trichostema austromontanum | | Native |
Trichostema austromontanum subsp. austromontanum | | Native |
Trichostema austromontanum subsp. compactum | HIDDEN LAKE BLUECURLS | Native |
Trichostema lanatum | WOOLLY BLUE CURLS | Native |
Trichostema lanceolatum | VINEGAR WEED | Native |
Trichostema laxum | TURPENTINE WEED | Native |
Trichostema micranthum | SMALL-FLOWERED BLUECURLS | Native |
Trichostema oblongum | | Native |
Trichostema ovatum | SAN JOAQUIN BLUECURLS | Native |
Trichostema parishii | | Native |
Trichostema rubisepalum | HERNANDEZ BLUECURLS | Native |
Trichostema ruygtii | NAPA BLUECURLS | Native |
Trichostema simulatum | | Native |
Tridens | | |
Tridens muticus var. muticus | SLIM TRIDENS | Native |
Tridens pilosus (Under Erioneuron pilosum) | | Synonym |
Tridens pulchellus (Under Dasyochloa pulchella) | | Synonym |
Trientalis arctica (Under Lysimachia europaea) | | Synonym |
Trientalis borealis subsp. latifolia (Under Lysimachia latifolia) | | Synonym |
Trientalis europaea (Under Lysimachia europaea) | | Synonym |
Trientalis europaea subsp. arctica (Under Lysimachia europaea) | | Synonym |
Trientalis latifolia (Under Lysimachia latifolia) | | Synonym |
Trifolium ↳ Key to Trifolium | CLOVER | |
Trifolium agrarium (Under Trifolium aureum) | | Misapplied name |
Trifolium albopurpureum | | Native |
Trifolium albopurpureum var. albopurpureum (Under Trifolium albopurpureum) | | Synonym |
Trifolium albopurpureum var. columbinum (Under Trifolium columbinum) | | Synonym |
Trifolium albopurpureum var. dichotomum (Under Trifolium dichotomum) | | Synonym |
Trifolium albopurpureum var. olivaceum (Under Trifolium columbinum) | | Synonym |
Trifolium alexandrinum | EGYPTIAN CLOVER | Waif |
Trifolium amoenum | TWO-FORK CLOVER | Native |
Trifolium amplectens (Under Trifolium depauperatum var. amplectens) | | Synonym |
Trifolium amplectens var. hydrophilum (Under Trifolium hydrophilum) | | Synonym |
Trifolium amplectens var. truncatum (Under Trifolium depauperatum var. truncatum) | | Synonym |
Trifolium andersonii | | Native |
Trifolium andersonii subsp. andersonii | ANDERSON'S CLOVER | Native |
Trifolium andersonii subsp. beatleyae | BEATLEY'S FIVE-LEAVED CLOVER | Native |
Trifolium andersonii subsp. monoense (Under Trifolium andersonii subsp. beatleyae) | | Synonym |
Trifolium andersonii var. andersonii (Under Trifolium andersonii subsp. andersonii) | | Synonym |
Trifolium andersonii var. beatleyae (Under Trifolium andersonii subsp. beatleyae) | | Synonym |
Trifolium angustifolium | NARROW-LEAVED CLOVER | Naturalized |
Trifolium appendiculatum | LARGE VARIEGATED CLOVER | Native |
Trifolium appendiculatum var. appendiculatum (Under Trifolium appendiculatum) | | Synonym |
Trifolium appendiculatum var. rostratum (Under Trifolium variegatum) | | Synonym |
Trifolium arvense | RABBITFOOT CLOVER | Naturalized |
Trifolium aureum | LARGE HOP CLOVER | Naturalized |
Trifolium barbigerum | BEARDED CLOVER | Native |
Trifolium barbigerum var. andrewsii (Under Trifolium grayi) | | Synonym |
Trifolium barbigerum var. barbigerum (Under Trifolium barbigerum) | | Synonym |
Trifolium beckwithii | BECKWITH'S CLOVER | Native |
Trifolium bifidum | PINOLE CLOVER | Native |
Trifolium bifidum var. bifidum (Under Trifolium bifidum) | | Synonym |
Trifolium bifidum var. decipiens (Under Trifolium bifidum) | | Synonym |
Trifolium bolanderi | BOLANDER'S CLOVER | Native |
Trifolium breweri | BREWER'S CLOVER | Native |
Trifolium buckwestiorum | SANTA CRUZ CLOVER | Native |
Trifolium campestre | HOP CLOVER | Naturalized |
Trifolium cernuum | NODDING CLOVER | Naturalized |
Trifolium ciliolatum | FOOTHILL CLOVER | Native |
Trifolium columbinum | OLIVE CLOVER | Native |
Trifolium cyathiferum | BOWL CLOVER | Native |
Trifolium dedeckerae | DEDECKER'S CLOVER | Native |
Trifolium depauperatum | | Native |
Trifolium depauperatum var. amplectens | PALE SACK CLOVER | Native |
Trifolium depauperatum var. depauperatum | DWARF SACK CLOVER | Native |
Trifolium depauperatum var. hydrophilum (Under Trifolium hydrophilum) | | Synonym |
Trifolium depauperatum var. truncatum | TRUNCATE SACK CLOVER | Native |
Trifolium dichotomum | | Native |
Trifolium dubium | LITTLE HOP CLOVER | Naturalized |
Trifolium elmeri (Under Trifolium longipes subsp. elmeri) | | Synonym |
Trifolium eriocephalum subsp. eriocephalum | HAIRY HEAD CLOVER | Native |
Trifolium eriocephalum var. eriocephalum (Under Trifolium eriocephalum subsp. eriocephalum) | | Synonym |
Trifolium fragiferum | STRAWBERRY CLOVER | Naturalized |
Trifolium fucatum | BULL CLOVER | Native |
Trifolium fucatum var. gambelii (Under Trifolium fucatum) | | Synonym |
Trifolium fucatum var. virescens (Under Trifolium fucatum) | | Synonym |
Trifolium gemellum (Under Trifolium striatum) | | Misapplied name |
Trifolium geminiflorum (Under Trifolium variegatum) | | Synonym |
Trifolium glomeratum | CLUSTERED CLOVER | Naturalized |
Trifolium gracilentum | PINPOINT CLOVER | Native |
Trifolium gracilentum var. gracilentum (Under Trifolium gracilentum) | | Synonym |
Trifolium gracilentum var. inconspicuum (Under Trifolium gracilentum) | | Synonym |
Trifolium gracilentum var. palmeri (Under Trifolium palmeri) | | Synonym |
Trifolium grayi | GRAY'S CLOVER | Native |
Trifolium gymnocarpon | NUTTALL'S CLOVER | Native |
Trifolium gymnocarpon subsp. plummerae (Under Trifolium gymnocarpon) | | Synonym |
Trifolium gymnocarpon var. plummerae (Under Trifolium gymnocarpon) | | Synonym |
Trifolium hirtum | ROSE CLOVER | Naturalized |
Trifolium howellii | HOWELL'S CLOVER | Native |
Trifolium hybridum | ALSIKE CLOVER | Naturalized |
Trifolium hydrophilum | SALINE CLOVER | Native |
Trifolium incarnatum | CRIMSON CLOVER | Naturalized |
Trifolium jokerstii | BUTTE COUNTY GOLDEN CLOVER | Native |
Trifolium kingii subsp. dedeckerae (Under Trifolium dedeckerae) | | Synonym |
Trifolium kingii var. productum (Under Trifolium productum) | | Synonym |
Trifolium lemmonii | LEMMON'S CLOVER | Native |
Trifolium longipes | LONG-STALKED CLOVER | Native |
Trifolium longipes subsp. atrorubens | | Native |
Trifolium longipes subsp. elmeri | ELMER'S CLOVER | Native |
Trifolium longipes subsp. hansenii | | Native |
Trifolium longipes subsp. multipedunculatum | | Native |
Trifolium longipes subsp. oreganum | | Native |
Trifolium longipes subsp. shastense | | Native |
Trifolium longipes var. atrorubens (Under Trifolium longipes subsp. atrorubens) | | Synonym |
Trifolium longipes var. elmeri (Under Trifolium longipes subsp. elmeri) | | Synonym |
Trifolium longipes var. hansenii (Under Trifolium longipes subsp. hansenii) | | Synonym |
Trifolium longipes var. multipedunculatum (Under Trifolium longipes subsp. multipedunculatum) | | Synonym |
Trifolium longipes var. nevadense (Under Trifolium longipes subsp. hansenii) | | Synonym |
Trifolium longipes var. oreganum (Under Trifolium longipes subsp. oreganum) | | Synonym |
Trifolium longipes var. shastense (Under Trifolium longipes subsp. shastense) | | Synonym |
Trifolium macilentum var. dedeckerae (Under Trifolium dedeckerae) | | Synonym |
Trifolium macraei | MACRAE'S CLOVER | Native |
Trifolium macrocephalum | LARGE-HEAD CLOVER | Native |
Trifolium microcephalum | SMALL-HEAD CLOVER | Native |
Trifolium microdon | THIMBLE CLOVER | Native |
Trifolium microdon var. pilosum (Under Trifolium microdon) | | Synonym |
Trifolium minutissimum (Under Trifolium barbigerum) | | Synonym |
Trifolium monanthum | | Native |
Trifolium monanthum subsp. grantianum | GRANT'S CARPET CLOVER | Native |
Trifolium monanthum subsp. monanthum | CARPET CLOVER | Native |
Trifolium monanthum subsp. parvum | SMALL CARPET CLOVER | Native |
Trifolium monanthum subsp. tenerum | DELICATE CARPET CLOVER | Native |
Trifolium monanthum var. eastwoodianum (Under Trifolium monanthum subsp. tenerum) | | Synonym |
Trifolium monanthum var. grantianum (Under Trifolium monanthum subsp. grantianum) | | Synonym |
Trifolium monanthum var. monanthum (Under Trifolium monanthum subsp. monanthum) | | Synonym |
Trifolium monanthum var. parvum (Under Trifolium monanthum subsp. parvum) | | Synonym |
Trifolium monoense (Under Trifolium andersonii subsp. beatleyae) | | Synonym |
Trifolium multicaule (Under Trifolium monanthum subsp. parvum) | | Synonym |
Trifolium obtusiflorum | CLAMMY CLOVER | Native |
Trifolium oliganthum | FEW-FLOWERED CLOVER | Native |
Trifolium olivaceum (Under Trifolium columbinum) | | Synonym |
Trifolium oreganum (Under Trifolium longipes subsp. oreganum) | | Synonym |
Trifolium palmeri | SOUTHERN ISLAND CLOVER | Native |
Trifolium pauciflorum (Under Trifolium variegatum) | | Synonym |
Trifolium piorkowskii | MAVERICK CLOVER | Native |
Trifolium plummerae (Under Trifolium gymnocarpon) | | Synonym |
Trifolium polyodon | PACIFIC GROVE CLOVER | Native |
Trifolium pratense | RED CLOVER | Naturalized |
Trifolium procumbens (Under Trifolium campestre) | | Synonym |
Trifolium productum | PRODUCTIVE CLOVER | Native |
Trifolium repens | WHITE CLOVER | Naturalized |
Trifolium resupinatum | REVERSED CLOVER | Naturalized |
Trifolium retusum | TEASEL CLOVER | Naturalized |
Trifolium rusbyi var. atrorubens (Under Trifolium longipes subsp. atrorubens) | | Synonym |
Trifolium siskiyouense | SISKIYOU CLOVER | Native |
Trifolium striatum | KNOTTED CLOVER | Naturalized |
Trifolium subterraneum | SUBTERRANEAN CLOVER | Naturalized |
Trifolium suffocatum | SMALL CLUSTER CLOVER | Naturalized |
Trifolium tomentosum | WOOLLY CLOVER | Naturalized |
Trifolium tomentosum var. tomentosum (Under Trifolium tomentosum) | | Synonym |
Trifolium trichocalyx | MONTEREY CLOVER | Native |
Trifolium tridentatum (Under Trifolium willdenovii) | | Synonym |
Trifolium tridentatum var. aciculare (Under Trifolium willdenovii) | | Synonym |
Trifolium variegatum | | Native |
Trifolium variegatum var. geminiflorum (Under Trifolium variegatum) | | Synonym |
Trifolium variegatum var. major (Under Trifolium appendiculatum) | | Synonym |
Trifolium variegatum var. melananthum (Under Trifolium appendiculatum) | | Synonym |
Trifolium variegatum var. pauciflorum (Under Trifolium variegatum) | | Synonym |
Trifolium variegatum var. trilobatum (Under Trifolium variegatum) | | Synonym |
Trifolium vesiculosum | ARROWLEAF CLOVER | Naturalized |
Trifolium willdenovii | TOMCAT CLOVER | Native |
Trifolium wormskioldii | COW CLOVER | Native |
Trifolium wormskioldii var. siskiyouense (Under Trifolium siskiyouense) | | Synonym |
Triglochin ↳ Key to Triglochin | ARROW-GRASS | |
Triglochin concinna | | Native |
Triglochin concinna var. concinna | SEASIDE ARROW-GRASS | Native |
Triglochin concinna var. debilis | | Native |
Triglochin maritima | COMMON ARROW-GRASS | Native |
Triglochin palustris | MARSH ARROW-GRASS | Native |
Triglochin scilloides | FLOWERING-QUILLWORT | Native |
Triglochin striata | THREE-RIBBED ARROW-GRASS | Native |
Trillium ↳ Key to Trillium | WAKEROBIN, TRILLIUM | |
Trillium albidum | | Native |
Trillium angustipetalum | | Native |
Trillium chloropetalum | GIANT TRILLIUM | Native |
Trillium chloropetalum var. angustipetalum (Under Trillium angustipetalum) | | Synonym |
Trillium chloropetalum var. giganteum (Under Trillium chloropetalum) | | Synonym |
Trillium kurabayashii (Under Trillium angustipetalum) | | Synonym |
Trillium ovatum | WHITE or WESTERN TRILLIUM | Native |
Trillium ovatum subsp. oettingeri | SALMON MOUNTAINS WAKEROBIN | Native |
Trillium ovatum subsp. ovatum | | Native |
Trillium rivale (Under Pseudotrillium rivale) | | Synonym |
Trimorpha acris var. debilis (Under Erigeron nivalis) | | Synonym |
Trimorpha lonchophylla (Under Erigeron lonchophyllus) | | Synonym |
Triodanis ↳ Key to Triodanis | VENUS LOOKING-GLASS | |
Triodanis biflora | | Native |
Triodanis perfoliata | | Native |
Triphysaria ↳ Key to Triphysaria | | |
Triphysaria eriantha | BUTTER-AND-EGGS, JOHNNY-TUCK | Native |
Triphysaria eriantha subsp. eriantha | | Native |
Triphysaria eriantha subsp. rosea | | Native |
Triphysaria floribunda | SAN FRANCISCO OWL'S-CLOVER | Native |
Triphysaria micrantha | | Native |
Triphysaria pusilla | | Native |
Triphysaria versicolor | | Native |
Triphysaria versicolor subsp. faucibarbata | | Native |
Triphysaria versicolor subsp. versicolor | | Native |
Tripleurospermum | | |
Tripleurospermum inodorum | SCENTLESS MAYWEED, FALSE CHAMOMILE | Naturalized |
Tripleurospermum maritimum (Under Tripleurospermum inodorum) | | Misapplied name |
Tripterocalyx ↳ Key to Tripterocalyx | | |
Tripterocalyx crux-maltae | KELLOGG'S SAND-VERBENA | Native |
Tripterocalyx micranthus | SMALL-FLOWERED SAND-VERBENA | Native |
Trisetum ↳ Key to Trisetum | | |
Trisetum canescens | TALL FALSE OAT | Native |
Trisetum cernuum | NODDING FALSE OAT | Native |
Trisetum cernuum var. canescens (Under Trisetum canescens) | | Synonym |
Trisetum cernuum var. projectum (Under Trisetum projectum) | | Synonym |
Trisetum montanum (Under Trisetum spicatum) | | Synonym |
Trisetum projectum | INTERRUPTED FALSE OAT | Native |
Trisetum spicatum | SPIKE FALSE OAT | Native |
Trisetum spicatum var. projectum (Under Trisetum projectum) | | Synonym |
Trisetum spicatum var. spicatum (Under Trisetum spicatum) | | Synonym |
Trisetum wolfii | WOLF'S FALSE OAT | Native |
Triteleia ↳ Key to Triteleia | | |
Triteleia angustiflora (Under Triteleia laxa) | | Synonym |
Triteleia anilina (Under Triteleia ixioides subsp. anilina) | | Synonym |
Triteleia bicolor (Under Triteleia grandiflora) | | Synonym |
Triteleia bridgesii | | Native |
Triteleia candida (Under Triteleia laxa) | | Synonym |
Triteleia clementina | SAN CLEMENTE ISLAND TRITELEIA | Native |
Triteleia crocea | | Native |
Triteleia crocea var. modesta (Under Triteleia crocea) | | Synonym |
Triteleia dudleyi | | Native |
Triteleia gracilis (Under Triteleia montana) | | Illegitimate name |
Triteleia grandiflora | LARGE-FLOWERED TRITELEIA | Native |
Triteleia grandiflora subsp. howellii (Under Triteleia grandiflora) | | Synonym ined. |
Triteleia grandiflora var. howellii (Under Triteleia grandiflora) | | Synonym |
Triteleia hendersonii | | Native |
Triteleia hendersonii var. leachiae (Under Triteleia hendersonii) | | Synonym |
Triteleia howellii (Under Triteleia grandiflora) | | Synonym |
Triteleia hyacinthina | WHITE BRODIAEA, FOOL'S ONION | Native |
Triteleia hyacinthina var. greenei (Under Triteleia lilacina) | | Synonym |
Triteleia ixioides | | Native |
Triteleia ixioides subsp. anilina | PRETTY FACE | Native |
Triteleia ixioides subsp. cookii | COOK'S TRITELEIA | Native |
Triteleia ixioides subsp. ixioides | GOLDEN BRODIAEA | Native |
Triteleia ixioides subsp. scabra | | Native |
Triteleia ixioides subsp. unifolia | | Native |
Triteleia ixioides var. anilina (Under Triteleia ixioides subsp. anilina) | | Synonym |
Triteleia ixioides var. cookii (Under Triteleia ixioides subsp. cookii) | | Synonym |
Triteleia ixioides var. scabra (Under Triteleia ixioides subsp. scabra) | | Synonym |
Triteleia lactea (Under Triteleia hyacinthina) | | Synonym |
Triteleia laxa | ITHURIEL'S SPEAR, COMMON TRITELEIA | Native |
Triteleia lilacina | | Native |
Triteleia lugens | DARK-MOUTHED TRITELEIA | Native |
Triteleia modesta (Under Triteleia crocea) | | Synonym |
Triteleia montana | MOUNTAIN TRITELEIA | Native |
Triteleia peduncularis | LONG-RAYED BRODIAEA | Native |
Triteleia piutensis | PIUTE MOUNTAINS TRITELEIA | Native |
Triteleia scabra (Under Triteleia ixioides subsp. scabra) | | Synonym |
Triteleia uniflora (Under Ipheion uniflorum) | | Synonym |
Triticum | WHEAT, GOAT GRASS | |
Triticum aestivum | | Naturalized |
Trixis | | |
Trixis californica var. californica | | Native |
Tropaeolaceae | NASTURTIUM FAMILY | |
Tropaeolum | | |
Tropaeolum majus | GARDEN NASTURTIUM | Naturalized |
Tropidocarpum ↳ Key to Tropidocarpum | | |
Tropidocarpum californicum | KINGS GOLD | Native |
Tropidocarpum capparideum | CAPER-FRUITED TROPIDOCARPUM | Native |
Tropidocarpum gracile | | Native |
Tropidocarpum gracile var. dubium (Under Tropidocarpum gracile) | | Synonym |
Tsuga ↳ Key to Tsuga | HEMLOCK | |
Tsuga heterophylla | WESTERN HEMLOCK | Native |
Tsuga mertensiana | MOUNTAIN HEMLOCK | Native |
Tuberaria | | |
Tuberaria guttata | | Naturalized |
Tuctoria ↳ Key to Tuctoria | | |
Tuctoria greenei | GREENE'S TUCTORIA | Native |
Tuctoria mucronata | CRAMPTON'S TUCTORIA, SOLANO GRASS | Native |
Tulipa | | |
Tulipa clusiana | TULIP | Naturalized |
Tumion californicum (Under Torreya californica) | | Synonym |
Tunica prolifera (Under Petrorhagia prolifera) | | Synonym |
Turricula parryi (Under Eriodictyon parryi) | | Synonym |
Turritis | TOWER MUSTARD | |
Turritis glabra | | Native |
Twisselmannia californica (Under Tropidocarpum californicum) | | Synonym |
Typha ↳ Key to Typha | CATTAIL | |
Typha angustifolia | NARROW-LEAVED CATTAIL | Native or naturalized |
Typha domingensis | SOUTHERN CATTAIL | Native |
Typha latifolia | BROAD-LEAVED CATTAIL | Native |
Typhaceae ↳ Key to Typhaceae | CATTAIL FAMILY | |