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Key to families Table of families and genera
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Scientific Name

Index Page: T

Scientific NameCommon Name
Taeniatherum asperum
(Under Elymus caput-medusae)
Synonym (tjm2)
Taeniatherum caput-medusae
(Under Elymus caput-medusae)
Synonym (tjm2)
Tagetes
  ↳  Key to Tagetes
MARIGOLD
Tagetes erectaAFRICAN or FRENCH MARIGOLDWaif
Tagetes minutaWILD MARIGOLDNaturalized
Talinum pygmaeum
(Under Lewisia pygmaea)
Synonym (tjm2)
TamaricaceaeTAMARISK FAMILY
Tamarix
  ↳  Key to Tamarix
TAMARISK, SALTCEDAR
Tamarix africana
(Under Tamarix)
Mentioned in
a note
Tamarix aphyllaATHELNaturalized
Tamarix chinensisFIVESTAMEN TAMARISKNaturalized
Tamarix gallicaFRENCH TAMARISKNaturalized
Tamarix parvifloraSMALLFLOWER TAMARISKNaturalized
Tamarix pentandra
(Under Tamarix ramosissima)
Synonym (tjm2)
Tamarix ramosissimaSALTCEDARNaturalized
Tanacetum
  ↳  Key to Tanacetum
TANSY
Tanacetum bipinnatumDUNE TANSYNative
Tanacetum camphoratum
(Under Tanacetum bipinnatum)
Synonym (tjm2)
Tanacetum canum
(Under Sphaeromeria cana)
Synonym (tjm2)
Tanacetum partheniumFEVERFEWNaturalized
Tanacetum vulgareCOMMON TANSYNaturalized
Taraxacum
  ↳  Key to Taraxacum
DANDELION
Taraxacum californicumCALIFORNIA DANDELIONNative
Taraxacum ceratophorumHORNED DANDELIONNative
Taraxacum ceratophorum var. bernardinum
(Under Taraxacum californicum)
Synonym
Taraxacum erythrospermumRED-SEEDED DANDELIONNaturalized
Taraxacum laevigatum
(Under Taraxacum erythrospermum)
Mentioned in
a note
Taraxacum laevigatum
(Under Taraxacum officinale)
Synonym (tjm2)
Taraxacum laevigatum var. erythrospermum
(Under Taraxacum erythrospermum)
Synonym
Taraxacum officinaleCOMMON DANDELIONNaturalized
Taraxacum officinale subsp. ceratophorum
(Under Taraxacum ceratophorum)
Synonym (tjm2)
Taraxacum officinale var. erythrospermum
(Under Taraxacum erythrospermum)
Synonym
Taraxia
  ↳  Key to Taraxia
Taraxia ovataNative
Taraxia subacaulisNative
Taraxia tanacetifoliaNative
Tauschia
  ↳  Key to Tauschia
Tauschia argutaNative
Tauschia glaucaGLAUCOUS TAUSCHIANative
Tauschia hartwegiiNative
Tauschia howelliiHOWELL'S TAUSCHIANative
Tauschia kelloggiiNative
Tauschia parishiiNative
Taxaceae
  ↳  Key to Taxaceae
YEW FAMILY
TaxusYEW
Taxus brevifoliaPACIFIC YEWNative
Taxus brevifolia var. brevifolia
(Under Taxus brevifolia)
Synonym (tjm2)
Taxus brevifolia var. polychaeta
(Under Taxus brevifolia)
Synonym (tjm2)
Taxus brevifolia var. reptaneta
(Under Taxus brevifolia)
Synonym (tjm2)
TecophilaeaceaeTECOPHILAEA FAMILY
Teesdalia
  ↳  Key to Teesdalia
Teesdalia coronopifoliaWaif
Teesdalia nudicaulisNaturalized
TellimaFRINGE CUPS
Tellima grandifloraNative
Tetracoccus
  ↳  Key to Tetracoccus
Tetracoccus dioicusPARRY'S TETRACOCCUSNative
Tetracoccus halliiHALL'S TETRACOCCUSNative
Tetracoccus ilicifoliusHOLLY-LEAVED TETRACOCCUSNative
Tetradymia
  ↳  Key to Tetradymia
COTTONTHORN, HORSEBRUSH
Tetradymia argyraeaSTRIPED HORSEBRUSHNative
Tetradymia axillarisNative
Tetradymia axillaris var. axillarisNative
Tetradymia axillaris var. longispinaNative
Tetradymia canescensNative
Tetradymia comosaNative
Tetradymia glabrataNative
Tetradymia spinosaNative
Tetradymia stenolepisNative
Tetradymia tetrameresDUNE HORSEBRUSHNative
Tetragonia
Tetragonia expansa
(Under Tetragonia tetragonoides)
Synonym (tjm2)
Tetragonia tetragonoidesNEW ZEALAND SPINACHNaturalized
Tetraneuris
Tetraneuris acaulis var. arizonicaNative
Tetraneuris acaulis var. nana
(Under Tetraneuris acaulis var. arizonica)
Synonym (tjm2)
Tetrapteron
  ↳  Key to Tetrapteron
Tetrapteron graciliflorumHILL SUN CUPNative
Tetrapteron palmeriNative
Teucrium
  ↳  Key to Teucrium
Teucrium canadense var. occidentale
(Under Teucrium)
Mentioned in
a note
Teucrium cubense subsp. depressumDWARF GERMANDERNative
Teucrium cubense var. densum
(Under Teucrium cubense subsp. depressum)
Synonym
Teucrium fruticans
(Under Teucrium)
Mentioned in
a note
Teucrium glandulosumDESERT GERMANDERNative
Teutliopsis patula
(Under Atriplex patula)
Synonym
Thalictrum
  ↳  Key to Thalictrum
MEADOW-RUE
Thalictrum alpinumARCTIC MEADOW-RUENative
Thalictrum fendleriNative
Thalictrum fendleri var. fendleriNative
Thalictrum fendleri var. polycarpumNative
Thalictrum occidentaleNative
Thalictrum occidentale var. palousense
(Under Thalictrum occidentale)
Synonym (tjm2)
Thalictrum polycarpum
(Under Thalictrum fendleri var. polycarpum)
Synonym (tjm2)
Thalictrum sparsiflorumNative
ThamnosmaTURPENTINE-BROOM
Thamnosma montanaNative
ThelespermaGREENTHREAD
Thelesperma filifolium
(Under Thelesperma)
Mentioned in
a note
Thelesperma megapotamicumRAYLESS GREENTHREADWaif
Thelypodium
  ↳  Key to Thelypodium
Thelypodium brachycarpumSHORT-PODDED THELYPODIUMNative
Thelypodium cooperi
(Under Caulanthus cooperi)
Synonym
Thelypodium crispumNative
Thelypodium flavescens
(Under Caulanthus flavescens)
Synonym (tjm2)
Thelypodium flexuosumNative
Thelypodium howellii subsp. howelliiHOWELL'S THELYPODIUMNative
Thelypodium integrifoliumNative
Thelypodium integrifolium subsp. affineNative
Thelypodium integrifolium subsp. complanatumFOXTAIL THELYPODIUMNative
Thelypodium jaegeri
(Under Hesperidanthus jaegeri)
Synonym (tjm2)
Thelypodium laciniatumNative
Thelypodium laciniatum var. milleflorum
(Under Thelypodium milleflorum)
Synonym (tjm2)
Thelypodium lasiophyllum
(Under Caulanthus lasiophyllus)
Synonym (tjm2)
Thelypodium lasiophyllum var. inalienum
(Under Caulanthus lasiophyllus)
Synonym (tjm2)
Thelypodium lasiophyllum var. lasiophyllum
(Under Caulanthus lasiophyllus)
Synonym (tjm2)
Thelypodium lasiophyllum var. rigidum
(Under Caulanthus lasiophyllus)
Synonym (tjm2)
Thelypodium lasiophyllum var. utahense
(Under Caulanthus lasiophyllus)
Synonym (tjm2)
Thelypodium lemmonii
(Under Caulanthus anceps)
Synonym (tjm2)
Thelypodium milleflorumMANY-FLOWERED THELYPODIUMNative
Thelypodium stenopetalumSLENDER-PETALED THELYPODIUMNative
ThelypteridaceaeTHELYPTERIS FAMILY
Thelypteris
  ↳  Key to Thelypteris
Thelypteris nevadensisNEVADA MARSH FERNNative
Thelypteris puberula var. puberula
(Under Thelypteris puberula var. sonorensis)
Mentioned in
a note
Thelypteris puberula var. sonorensisSONORAN MAIDEN FERNNative
Themeda quadrivalvis
(Under Poaceae (Gramineae))
Mentioned in
a note
Themidaceae
  ↳  Key to Themidaceae
BRODIAEA FAMILY
TheophrastaceaeTHEOPHRASTA FAMILY
Thermopsis
  ↳  Key to Thermopsis
GOLDEN PEA, FALSE-LUPINE
Thermopsis argentata
(Under Thermopsis californica var. argentata)
Synonym (tjm2)
Thermopsis californicaNative
Thermopsis californica var. argentataSILVERY FALSE-LUPINENative
Thermopsis californica var. californicaNative
Thermopsis californica var. semotaVELVETY FALSE-LUPINENative
Thermopsis gracilisNative
Thermopsis macrophyllaSANTA YNEZ FALSE-LUPINENative
Thermopsis macrophylla var. agnina
(Under Thermopsis macrophylla)
Synonym (tjm2)
Thermopsis macrophylla var. argentata
(Under Thermopsis californica var. argentata)
Synonym (tjm2)
Thermopsis macrophylla var. macrophylla
(Under Thermopsis macrophylla)
Synonym (tjm2)
Thermopsis macrophylla var. semota
(Under Thermopsis californica var. semota)
Synonym (tjm2)
Thermopsis macrophylla var. venosa
(Under Thermopsis gracilis)
Synonym (tjm2)
Thermopsis robustaROBUST FALSE-LUPINENative
Thinopyrum intermedium
(Under Elymus hispidus)
Synonym (tjm2)
Thinopyrum intermedium subsp. barbulatum
(Under Elymus hispidus)
Synonym (tjm2)
Thinopyrum junceum
(Under Elymus)
Mentioned in
a note
Thinopyrum ponticum
(Under Elymus ponticus)
Synonym (tjm2)
Thinopyrum pycnanthum
(Under Elymus)
Mentioned in
a note
ThlaspiPENNYCRESS
Thlaspi alpestre var. californicum
(Under Noccaea fendleri subsp. californica)
Synonym (tjm2)
Thlaspi alpestre var. glaucum
(Under Noccaea fendleri subsp. glauca)
Synonym (tjm2)
Thlaspi arvenseNaturalized
Thlaspi californicum
(Under Noccaea fendleri subsp. californica)
Synonym (tjm2)
Thlaspi fendleri
(Under Noccaea fendleri)
Synonym
Thlaspi fendleri var. glaucum
(Under Noccaea fendleri subsp. glauca)
Synonym (tjm2)
Thlaspi glaucum subsp. californicum
(Under Noccaea fendleri subsp. californica)
Synonym (tjm2)
Thlaspi montanum
(Under Noccaea fendleri)
Mentioned in
a note
Thlaspi montanum var. californicum
(Under Noccaea fendleri subsp. californica)
Synonym (tjm2)
Thlaspi montanum var. fendleri
(Under Noccaea fendleri)
Synonym
Thlaspi montanum var. montanum
(Under Noccaea fendleri subsp. glauca)
Synonym (tjm2)
ThujaARBORVITAE
Thuja plicataWESTERN RED CEDAR, CANOE CEDARNative
ThymelaeaceaeDAPHNE FAMILY
Thymophylla
  ↳  Key to Thymophylla
Thymophylla pentachaeta var. belenidiumNative
Thymophylla tenuiloba var. tenuilobaWaif
Thysanocarpus
  ↳  Key to Thysanocarpus
LACEPOD, FRINGEPOD
Thysanocarpus amplectens
(Under Thysanocarpus curvipes subsp. amplectens)
Synonym (tjm2)
Thysanocarpus conchuliferusSANTA CRUZ ISLAND FRINGEPODNative
Thysanocarpus curvipesNative
Thysanocarpus curvipes
(Under Thysanocarpus curvipes subsp. amplectens)
Mentioned in
a note
Thysanocarpus curvipes
(Under Thysanocarpus curvipes subsp. curvipes)
Mentioned in
a note
Thysanocarpus curvipes
(Under Thysanocarpus curvipes subsp. elegans)
Mentioned in
a note
Thysanocarpus curvipes
(Under Thysanocarpus curvipes subsp. eradiatus)
Mentioned in
a note
Thysanocarpus curvipes
(Under Thysanocarpus curvipes subsp. longistylus)
Mentioned in
a note
Thysanocarpus curvipes subsp. amplectensNative
Thysanocarpus curvipes subsp. curvipesNative
Thysanocarpus curvipes subsp. elegansNative
Thysanocarpus curvipes subsp. eradiatusNative
Thysanocarpus curvipes subsp. longistylusNative
Thysanocarpus curvipes var. curvipes
(Under Thysanocarpus curvipes subsp. curvipes)
Synonym (tjm2)
Thysanocarpus curvipes var. eradiatus
(Under Thysanocarpus curvipes subsp. eradiatus)
Synonym (tjm2)
Thysanocarpus curvipes var. longistylus
(Under Thysanocarpus curvipes subsp. longistylus)
Synonym (tjm2)
Thysanocarpus desertorumNative
Thysanocarpus elegans
(Under Thysanocarpus curvipes subsp. elegans)
Synonym (tjm2)
Thysanocarpus laciniatusNative
Thysanocarpus laciniatus var. conchuliferus
(Under Thysanocarpus conchuliferus)
Synonym (tjm2)
Thysanocarpus laciniatus var. hitchcockii
(Under Thysanocarpus desertorum)
Synonym (tjm2)
Thysanocarpus laciniatus var. laciniatus
(Under Thysanocarpus laciniatus)
Synonym (tjm2)
Thysanocarpus laciniatus var. rigidus
(Under Thysanocarpus rigidus)
Synonym (tjm2)
Thysanocarpus pusillus
(Under Athysanus pusillus)
Synonym
Thysanocarpus radiansNative
Thysanocarpus radians var. montanus
(Under Thysanocarpus radians)
Synonym (tjm2)
Thysanocarpus rigidusNative
Thysanolaena latifolia
(Under Poaceae (Gramineae))
Mentioned in
a note
TiarellaSUGAR-SCOOP
Tiarella trifoliata
  ↳  Key to Tiarella trifoliata
LACE FLOWERNative
Tiarella trifoliata var. trifoliataNative
Tiarella trifoliata var. unifoliataNative
Tidestromia
  ↳  Key to Tidestromia
Tidestromia lanuginosaWOOLLY TIDESTROMIANative
Tidestromia lanuginosa subsp. eliassoniana
(Under Tidestromia lanuginosa)
Synonym
Tidestromia oblongifolia
(Under Tidestromia suffruticosa var. oblongifolia)
Synonym (tjm2)
Tidestromia oblongifolia subsp. cryptantha
(Under Tidestromia suffruticosa var. oblongifolia)
Synonym (tjm2)
Tidestromia suffruticosa var. oblongifoliaHONEYSWEETNative
Tillaea aquatica
(Under Crassula aquatica)
Synonym (tjm2)
Tillaea erecta
(Under Crassula connata)
Synonym (tjm2)
Tillaea muscosa
(Under Crassula tillaea)
Synonym (tjm2)
Tiniaria convolvulus
(Under Fallopia convolvulus)
Synonym (tjm2)
Tiniaria japonica
(Under Fallopia japonica)
Synonym (tjm2)
Tiniaria sachalinensis
(Under Fallopia sachalinensis)
Synonym (tjm2)
Tiquilia
  ↳  Key to Tiquilia
Tiquilia canescensSHRUBBY TIQUILIANative
Tiquilia canescens var. canescensNative
Tiquilia canescens var. pulchellaNative
Tiquilia nuttalliiANNUAL TIQUILIANative
Tiquilia palmeriPALMER'S TIQUILIANative
Tiquilia plicataFAN-LEAVED TIQUILIANative
Tofieldia occidentalis
(Under Tofieldiaceae)
Mentioned in
a note
Tofieldia occidentalis subsp. occidentalis
(Under Triantha occidentalis subsp. occidentalis)
Synonym (tjm2)
TofieldiaceaeFALSE-ASPHODEL FAMILY
TolmieaPIG-A-BACK PLANT
Tolmiea diplomenziesiiNative
Tolmiea menziesii
(Under Tolmiea diplomenziesii)
Mentioned in
a note
Tolpis
Tolpis barbataNaturalized
Tolpis umbellata
(Under Tolpis barbata)
Synonym (tjm2)
Tonella
Tonella tenellaNative
Tonestus
  ↳  Key to Tonestus
Tonestus eximiusTAHOE TONESTUSNative
Tonestus lyalliiLYALL'S TONESTUSNative
Tonestus peirsoniiPEIRSON'S TONESTUSNative
Torilis
  ↳  Key to Torilis
Torilis arvensisTALL SOCK-DESTROYERNaturalized
Torilis arvensis subsp. purpurea
(Under Torilis arvensis)
Synonym (tjm2)
Torilis nodosaSHORT SOCK-DESTROYERNaturalized
TorreyaTORREYA
Torreya californicaCALIFORNIA-NUTMEGNative
Torreya myristica
(Under Torreya californica)
Synonym
Torreyochloa
  ↳  Key to Torreyochloa
FALSE MANNA GRASS
Torreyochloa erectaNative
Torreyochloa pallida var. paucifloraWEAK MANNA GRASSNative
Townsendia
  ↳  Key to Townsendia
Townsendia condensataCUSHION TOWNSENDIANative
Townsendia leptotesSLENDER TOWNSENDIANative
Townsendia parryi
(Under Townsendia)
Mentioned in
a note
Townsendia scapigeraNative
ToxicodendronPOISON OAK, POISON IVY
Toxicodendron diversilobumWESTERN POISON OAKNative
Toxicodendron rydbergii
(Under Toxicodendron diversilobum)
Mentioned in
a note
Toxicodendron trilobatum
(Under Rhus aromatica)
Synonym (tjm2)
Toxicodendron triphyllum var. trilobatum
(Under Rhus aromatica)
Synonym (tjm2)
Toxicoscordion
  ↳  Key to Toxicoscordion
DEATH CAMAS
Toxicoscordion brevibracteatumNative
Toxicoscordion exaltatumNative
Toxicoscordion fontanumNative
Toxicoscordion fremontiiNative
Toxicoscordion micranthumNative
Toxicoscordion paniculatumNative
Toxicoscordion venenosum var. venenosumNative
Tracyina
Tracyina rostrataBEAKED TRACYINANative
Tradescantia
  ↳  Key to Tradescantia
Tradescantia fluminensisNaturalized
Tradescantia ohiensisWaif
TragiaNOSEBURN
Tragia ramosaDESERT TRAGIANative
Tragia stylaris
(Under Tragia ramosa)
Synonym (tjm2)
Tragopogon
  ↳  Key to Tragopogon
GOAT'S BEARD, SALSIFY
Tragopogon dubiusYELLOW SALSIFYNaturalized
Tragopogon mirus
(Under Tragopogon)
Mentioned in
a note
Tragopogon miscellus
(Under Tragopogon)
Mentioned in
a note
Tragopogon porrifoliusSALSIFY, OYSTER PLANTNaturalized
Tragopogon pratensisMEADOW SALSIFYNaturalized
Transberingia
Transberingia bursifolia subsp. virgataVIRGATE HALIMOLOBOSNative
Trautvetteria
Trautvetteria caroliniensisNative
Trautvetteria caroliniensis var. occidentalis
(Under Trautvetteria caroliniensis)
Synonym (tjm2)
Trautvetteria grandis
(Under Trautvetteria caroliniensis)
Synonym (tjm2)
TriadicaTALLOWTREE
Triadica sebiferaCHINESE TALLOWTREENaturalized
Triantha
Triantha occidentalis subsp. occidentalisNative
TrianthemaHORSE-PURSLANE
Trianthema portulacastrumNative
Tribolium obliterum
(Under Poaceae (Gramineae))
Mentioned in
a note
TribulusPUNCTURE VINE, CALTROP
Tribulus terrestrisNaturalized
Tricardia
Tricardia watsoniiTHREE HEARTSNative
Trichachne californica
(Under Digitaria californica var. californica)
Synonym (tjm2)
Trichocoronis
Trichocoronis riparia
(Under Trichocoronis wrightii var. wrightii)
Synonym (tjm2)
Trichocoronis wrightii var. wrightiiWRIGHT'S TRICHOCORONISNative or naturalized
Tricholaena rosea
(Under Melinis repens subsp. repens)
Synonym (tjm2)
Trichophorum
  ↳  Key to Trichophorum
Trichophorum clementisNative
Trichophorum emergens
(Under Trichophorum pumilum)
Synonym (tjm2)
Trichophorum pumilumLITTLE BULRUSHNative
Trichophorum pumilum var. rollandii
(Under Trichophorum pumilum)
Synonym (tjm2)
Trichoptilium
Trichoptilium incisumNative
Trichostema
  ↳  Key to Trichostema
BLUE CURLS
Trichostema austromontanumNative
Trichostema austromontanum subsp. austromontanumNative
Trichostema austromontanum subsp. compactumHIDDEN LAKE BLUECURLSNative
Trichostema lanatumWOOLLY BLUE CURLSNative
Trichostema lanceolatumVINEGAR WEEDNative
Trichostema laxumTURPENTINE WEEDNative
Trichostema micranthumSMALL-FLOWERED BLUECURLSNative
Trichostema oblongumNative
Trichostema ovatumSAN JOAQUIN BLUECURLSNative
Trichostema parishiiNative
Trichostema rubisepalumHERNANDEZ BLUECURLSNative
Trichostema ruygtiiNAPA BLUECURLSNative
Trichostema simulatumNative
Tridens
Tridens muticus var. muticusSLIM TRIDENSNative
Tridens pilosus
(Under Erioneuron pilosum)
Synonym (tjm2)
Tridens pulchellus
(Under Dasyochloa pulchella)
Synonym (tjm2)
Trientalis arctica
(Under Lysimachia europaea)
Synonym (tjm2)
Trientalis borealis subsp. latifolia
(Under Lysimachia latifolia)
Synonym (tjm2)
Trientalis europaea
(Under Lysimachia europaea)
Synonym (tjm2)
Trientalis europaea subsp. arctica
(Under Lysimachia europaea)
Synonym (tjm2)
Trientalis latifolia
(Under Lysimachia latifolia)
Synonym (tjm2)
Trifolium
  ↳  Key to Trifolium
CLOVER
Trifolium agrarium
(Under Trifolium aureum)
Mentioned in
a note
Trifolium albopurpureumNative
Trifolium albopurpureum var. albopurpureum
(Under Trifolium albopurpureum)
Synonym (tjm2)
Trifolium albopurpureum var. dichotomum
(Under Trifolium dichotomum)
Synonym (tjm2)
Trifolium albopurpureum var. olivaceum
(Under Trifolium olivaceum)
Synonym (tjm2)
Trifolium alexandrinumEGYPTIAN CLOVERWaif
Trifolium amoenumTWO-FORK CLOVERNative
Trifolium amplectens
(Under Trifolium depauperatum var. amplectens)
Synonym (tjm2)
Trifolium amplectens var. hydrophilum
(Under Trifolium hydrophilum)
Synonym (tjm2)
Trifolium amplectens var. truncatum
(Under Trifolium depauperatum var. truncatum)
Synonym (tjm2)
Trifolium andersoniiNative
Trifolium andersonii subsp. andersoniiANDERSON'S CLOVERNative
Trifolium andersonii subsp. beatleyaeBEATLEY'S FIVE-LEAVED CLOVERNative
Trifolium andersonii subsp. monoense
(Under Trifolium andersonii subsp. beatleyae)
Synonym (tjm2)
Trifolium andersonii var. andersonii
(Under Trifolium andersonii subsp. andersonii)
Synonym (tjm2)
Trifolium andersonii var. beatleyae
(Under Trifolium andersonii subsp. beatleyae)
Synonym (tjm2)
Trifolium angustifoliumNARROW-LEAVED CLOVERNaturalized
Trifolium appendiculatum var. appendiculatum
(Under Trifolium variegatum var. major)
Synonym (tjm2)
Trifolium appendiculatum var. rostratum
(Under Trifolium variegatum var. variegatum)
Synonym (tjm2)
Trifolium arvenseRABBITFOOT CLOVERNaturalized
Trifolium aureumLARGE HOP CLOVERNaturalized
Trifolium barbigerumBEARDED CLOVERNative
Trifolium barbigerum var. andrewsii
(Under Trifolium grayi)
Synonym (tjm2)
Trifolium barbigerum var. barbigerum
(Under Trifolium barbigerum)
Synonym (tjm2)
Trifolium beckwithiiBECKWITH'S CLOVERNative
Trifolium bifidumPINOLE CLOVERNative
Trifolium bifidum var. bifidumNative
Trifolium bifidum var. decipiensNative
Trifolium bolanderiBOLANDER'S CLOVERNative
Trifolium breweriBREWER'S CLOVERNative
Trifolium buckwestiorumSANTA CRUZ CLOVERNative
Trifolium campestreHOP CLOVERNaturalized
Trifolium cernuumNODDING CLOVERNaturalized
Trifolium ciliolatumFOOTHILL CLOVERNative
Trifolium cyathiferumBOWL CLOVERNative
Trifolium dedeckerae
(Under Trifolium kingii subsp. dedeckerae)
Synonym (tjm2)
Trifolium depauperatumNative
Trifolium depauperatum var. amplectensPALE SACK CLOVERNative
Trifolium depauperatum var. depauperatumDWARF SACK CLOVERNative
Trifolium depauperatum var. hydrophilum
(Under Trifolium hydrophilum)
Synonym (tjm2)
Trifolium depauperatum var. truncatumTRUNCATE SACK CLOVERNative
Trifolium dichotomumNative
Trifolium dubiumLITTLE HOP CLOVERNaturalized
Trifolium elmeri
(Under Trifolium longipes subsp. elmeri)
Synonym (tjm2)
Trifolium eriocephalum subsp. eriocephalumHAIRY HEAD CLOVERNative
Trifolium eriocephalum var. cusickii
(Under Trifolium eriocephalum subsp. eriocephalum)
Mentioned in
a note
Trifolium eriocephalum var. eriocephalum
(Under Trifolium eriocephalum subsp. eriocephalum)
Synonym (tjm2)
Trifolium eriocephalum var. harneyense
(Under Trifolium eriocephalum subsp. eriocephalum)
Mentioned in
a note
Trifolium fragiferumSTRAWBERRY CLOVERNaturalized
Trifolium fucatumBULL CLOVERNative
Trifolium fucatum var. gambelii
(Under Trifolium fucatum)
Synonym (tjm2)
Trifolium fucatum var. virescens
(Under Trifolium fucatum)
Synonym (tjm2)
Trifolium gemellum
(Under Trifolium striatum)
Mentioned in
a note
Trifolium geminiflorum
(Under Trifolium variegatum var. geminiflorum)
Synonym (tjm2)
Trifolium glomeratumCLUSTERED CLOVERNaturalized
Trifolium gracilentumPINPOINT CLOVERNative
Trifolium gracilentum var. gracilentum
(Under Trifolium gracilentum)
Synonym (tjm2)
Trifolium gracilentum var. inconspicuum
(Under Trifolium gracilentum)
Synonym (tjm2)
Trifolium gracilentum var. palmeri
(Under Trifolium palmeri)
Synonym (tjm2)
Trifolium grayiGRAY'S CLOVERNative
Trifolium gymnocarpon subsp. gymnocarpon
(Under Trifolium gymnocarpon subsp. plummerae)
Mentioned in
a note
Trifolium gymnocarpon subsp. plummeraePLUMMER'S CLOVERNative
Trifolium gymnocarpon var. plummerae
(Under Trifolium gymnocarpon subsp. plummerae)
Synonym (tjm2)
Trifolium hirtumROSE CLOVERNaturalized
Trifolium howelliiHOWELL'S CLOVERNative
Trifolium hybridumALSIKE CLOVERNaturalized
Trifolium hydrophilumSALINE CLOVERNative
Trifolium incarnatumCRIMSON CLOVERNaturalized
Trifolium jokerstiiBUTTE COUNTY GOLDEN CLOVERNative
Trifolium kingii subsp. dedeckeraeDEDECKER'S CLOVERNative
Trifolium kingii var. productum
(Under Trifolium productum)
Synonym (tjm2)
Trifolium lemmoniiLEMMON'S CLOVERNative
Trifolium longipesLONG-STALKED CLOVERNative
Trifolium longipes subsp. atrorubensNative
Trifolium longipes subsp. elmeriELMER'S CLOVERNative
Trifolium longipes subsp. hanseniiNative
Trifolium longipes subsp. longipes
(Under Trifolium longipes)
Mentioned in
a note
Trifolium longipes subsp. multipedunculatumNative
Trifolium longipes subsp. oreganumNative
Trifolium longipes subsp. shastenseNative
Trifolium longipes var. atrorubens
(Under Trifolium longipes subsp. atrorubens)
Synonym (tjm2)
Trifolium longipes var. elmeri
(Under Trifolium longipes subsp. elmeri)
Synonym (tjm2)
Trifolium longipes var. hansenii
(Under Trifolium longipes subsp. hansenii)
Synonym (tjm2)
Trifolium longipes var. multipedunculatum
(Under Trifolium longipes subsp. multipedunculatum)
Synonym (tjm2)
Trifolium longipes var. nevadense
(Under Trifolium longipes subsp. hansenii)
Synonym (tjm2)
Trifolium longipes var. oreganum
(Under Trifolium longipes subsp. oreganum)
Synonym (tjm2)
Trifolium longipes var. shastense
(Under Trifolium longipes subsp. shastense)
Synonym (tjm2)
Trifolium macilentum var. dedeckerae
(Under Trifolium kingii subsp. dedeckerae)
Synonym (tjm2)
Trifolium macraeiMACRAE'S CLOVERNative
Trifolium macrocephalumLARGE-HEAD CLOVERNative
Trifolium microcephalumSMALL-HEAD CLOVERNative
Trifolium microdonTHIMBLE CLOVERNative
Trifolium microdon var. pilosum
(Under Trifolium microdon)
Synonym (tjm2)
Trifolium minutissimum
(Under Trifolium barbigerum)
Synonym (tjm2)
Trifolium monanthumNative
Trifolium monanthum subsp. grantianumGRANT'S CARPET CLOVERNative
Trifolium monanthum subsp. monanthumCARPET CLOVERNative
Trifolium monanthum subsp. parvumSMALL CARPET CLOVERNative
Trifolium monanthum subsp. tenerumDELICATE CARPET CLOVERNative
Trifolium monanthum var. eastwoodianum
(Under Trifolium monanthum subsp. tenerum)
Synonym (tjm2)
Trifolium monanthum var. grantianum
(Under Trifolium monanthum subsp. grantianum)
Synonym (tjm2)
Trifolium monanthum var. monanthum
(Under Trifolium monanthum subsp. monanthum)
Synonym (tjm2)
Trifolium monanthum var. parvum
(Under Trifolium monanthum subsp. parvum)
Synonym (tjm2)
Trifolium monoense
(Under Trifolium andersonii subsp. beatleyae)
Synonym (tjm2)
Trifolium multicaule
(Under Trifolium monanthum subsp. parvum)
Synonym (tjm2)
Trifolium obtusiflorumCLAMMY CLOVERNative
Trifolium oliganthumFEW-FLOWERED CLOVERNative
Trifolium olivaceumOLIVE CLOVERNative
Trifolium oreganum
(Under Trifolium longipes subsp. oreganum)
Synonym (tjm2)
Trifolium palmeriSOUTHERN ISLAND CLOVERNative
Trifolium pauciflorum
(Under Trifolium variegatum var. variegatum)
Synonym (tjm2)
Trifolium plummerae
(Under Trifolium gymnocarpon subsp. plummerae)
Synonym (tjm2)
Trifolium polyodonPACIFIC GROVE CLOVERNative
Trifolium pratenseRED CLOVERNaturalized
Trifolium procumbens
(Under Trifolium campestre)
Synonym (tjm2)
Trifolium productumPRODUCTIVE CLOVERNative
Trifolium repensWHITE CLOVERNaturalized
Trifolium resupinatumREVERSED CLOVERWaif
Trifolium retusumTEASEL CLOVERNaturalized
Trifolium rusbyi var. atrorubens
(Under Trifolium longipes subsp. atrorubens)
Synonym (tjm2)
Trifolium siskiyouenseSISKIYOU CLOVERNative
Trifolium striatumKNOTTED CLOVERNaturalized
Trifolium subterraneumSUBTERRANEAN CLOVERNaturalized
Trifolium tomentosumWOOLLY CLOVERNaturalized
Trifolium tomentosum var. tomentosum
(Under Trifolium tomentosum)
Synonym (tjm2)
Trifolium trichocalyxMONTEREY CLOVERNative
Trifolium tridentatum
(Under Trifolium willdenovii)
Synonym (tjm2)
Trifolium tridentatum var. aciculare
(Under Trifolium willdenovii)
Synonym (tjm2)
Trifolium variegatumNative
Trifolium variegatum var. geminiflorumSMALL-FLOWERED VARIEGATED CLOVERNative
Trifolium variegatum var. majorLARGE VARIEGATED CLOVERNative
Trifolium variegatum var. melananthum
(Under Trifolium variegatum var. major)
Synonym (tjm2)
Trifolium variegatum var. pauciflorum
(Under Trifolium variegatum var. geminiflorum)
Mentioned in
a note
Trifolium variegatum var. trilobatum
(Under Trifolium variegatum var. variegatum)
Synonym (tjm2)
Trifolium variegatum var. variegatumVARIEGATED CLOVERNative
Trifolium vesiculosumARROWLEAF CLOVERNaturalized
Trifolium willdenoviiTOMCAT CLOVERNative
Trifolium wormskioldiiCOW CLOVERNative
Trifolium wormskioldii var. siskiyouense
(Under Trifolium siskiyouense)
Synonym (tjm2)
Triglochin
  ↳  Key to Triglochin
ARROW-GRASS
Triglochin concinnaNative
Triglochin concinna var. concinnaSEASIDE ARROW-GRASSNative
Triglochin concinna var. debilisNative
Triglochin maritimaCOMMON ARROW-GRASSNative
Triglochin palustrisMARSH ARROW-GRASSNative
Triglochin scilloidesFLOWERING-QUILLWORTNative
Triglochin striataTHREE-RIBBED ARROW-GRASSNative
Trillium
  ↳  Key to Trillium
WAKEROBIN, TRILLIUM
Trillium albidumNative
Trillium angustipetalumNative
Trillium chloropetalumGIANT TRILLIUMNative
Trillium chloropetalum var. angustipetalum
(Under Trillium angustipetalum)
Synonym (tjm2)
Trillium chloropetalum var. giganteum
(Under Trillium chloropetalum)
Synonym (tjm2)
Trillium kurabayashii
(Under Trillium angustipetalum)
Synonym (tjm2)
Trillium ovatumWHITE or WESTERN TRILLIUMNative
Trillium ovatum subsp. oettingeriSALMON MOUNTAINS WAKEROBINNative
Trillium ovatum subsp. ovatumNative
Trillium rivale
(Under Pseudotrillium rivale)
Synonym (tjm2)
Trillium rivale
(Under Trillium)
Mentioned in
a note
Trimorpha acris var. debilis
(Under Erigeron nivalis)
Synonym (tjm2)
Trimorpha lonchophylla
(Under Erigeron lonchophyllus)
Synonym (tjm2)
Triodanis
  ↳  Key to Triodanis
VENUS LOOKING-GLASS
Triodanis bifloraNative
Triodanis perfoliataNative
Triphysaria
  ↳  Key to Triphysaria
Triphysaria erianthaBUTTER-AND-EGGS, JOHNNY-TUCKNative
Triphysaria eriantha subsp. erianthaNative
Triphysaria eriantha subsp. roseaNative
Triphysaria floribundaSAN FRANCISCO OWL'S-CLOVERNative
Triphysaria micranthaNative
Triphysaria pusillaNative
Triphysaria versicolorNative
Triphysaria versicolor subsp. faucibarbataNative
Triphysaria versicolor subsp. versicolorNative
Tripleurospermum
Tripleurospermum inodorumSCENTLESS MAYWEED, FALSE CHAMOMILENaturalized
Tripleurospermum maritimum
(Under Tripleurospermum inodorum)
Mentioned in
a note
Tripterocalyx
  ↳  Key to Tripterocalyx
Tripterocalyx crux-maltaeKELLOGG'S SAND-VERBENANative
Tripterocalyx micranthusSMALL-FLOWERED SAND-VERBENANative
Trisetum
  ↳  Key to Trisetum
Trisetum canescensTALL FALSE OATNative
Trisetum cernuumNODDING FALSE OATNative
Trisetum cernuum var. canescens
(Under Trisetum canescens)
Synonym (tjm2)
Trisetum cernuum var. projectum
(Under Trisetum projectum)
Synonym (tjm2)
Trisetum flavescens
(Under Trisetum)
Mentioned in
a note
Trisetum montanum
(Under Trisetum spicatum)
Synonym (tjm2)
Trisetum projectumINTERRUPTED FALSE OATNative
Trisetum spicatumSPIKE FALSE OATNative
Trisetum spicatum var. projectum
(Under Trisetum projectum)
Synonym (tjm2)
Trisetum spicatum var. spicatum
(Under Trisetum spicatum)
Synonym (tjm2)
Trisetum wolfiiWOLF'S FALSE OATNative
Triteleia
  ↳  Key to Triteleia
Triteleia angustiflora
(Under Triteleia laxa)
Synonym (tjm2)
Triteleia anilina
(Under Triteleia ixioides subsp. anilina)
Synonym (tjm2)
Triteleia bicolor
(Under Triteleia grandiflora)
Synonym (tjm2)
Triteleia bridgesiiNative
Triteleia candida
(Under Triteleia laxa)
Synonym (tjm2)
Triteleia clementinaSAN CLEMENTE ISLAND TRITELEIANative
Triteleia croceaNative
Triteleia crocea var. modesta
(Under Triteleia crocea)
Synonym (tjm2)
Triteleia dudleyiNative
Triteleia gracilis
(Under Triteleia montana)
Synonym (tjm2)
Triteleia grandifloraLARGE-FLOWERED TRITELEIANative
Triteleia grandiflora subsp. howellii
(Under Triteleia grandiflora)
Synonym (tjm2)
Triteleia grandiflora var. howellii
(Under Triteleia grandiflora)
Synonym (tjm2)
Triteleia hendersoniiNative
Triteleia hendersonii var. leachiae
(Under Triteleia hendersonii)
Synonym (tjm2)
Triteleia howellii
(Under Triteleia grandiflora)
Synonym (tjm2)
Triteleia hyacinthinaWHITE BRODIAEA, FOOL'S ONIONNative
Triteleia hyacinthina var. greenei
(Under Triteleia lilacina)
Synonym (tjm2)
Triteleia ixioidesNative
Triteleia ixioides subsp. anilinaPRETTY FACENative
Triteleia ixioides subsp. cookiiCOOK'S TRITELEIANative
Triteleia ixioides subsp. ixioidesGOLDEN BRODIAEANative
Triteleia ixioides subsp. scabraNative
Triteleia ixioides subsp. unifoliaNative
Triteleia ixioides var. anilina
(Under Triteleia ixioides subsp. anilina)
Synonym (tjm2)
Triteleia ixioides var. cookii
(Under Triteleia ixioides subsp. cookii)
Synonym (tjm2)
Triteleia ixioides var. scabra
(Under Triteleia ixioides subsp. scabra)
Synonym (tjm2)
Triteleia lactea
(Under Triteleia hyacinthina)
Synonym (tjm2)
Triteleia laxaITHURIEL'S SPEAR, COMMON TRITELEIANative
Triteleia lilacinaNative
Triteleia lugensDARK-MOUTHED TRITELEIANative
Triteleia modesta
(Under Triteleia crocea)
Synonym (tjm2)
Triteleia montanaMOUNTAIN TRITELEIANative
Triteleia peduncularisLONG-RAYED BRODIAEANative
Triteleia piutensisPIUTE MOUNTAINS TRITELEIANative
Triteleia scabra
(Under Triteleia ixioides subsp. scabra)
Synonym (tjm2)
Triteleia uniflora
(Under Ipheion uniflorum)
Synonym (tjm2)
TriticumWHEAT, GOAT GRASS
Triticum aestivumNaturalized
Trixis
Trixis californica var. californicaNative
TropaeolaceaeNASTURTIUM FAMILY
Tropaeolum
Tropaeolum majusGARDEN NASTURTIUMNaturalized
Tropidocarpum
  ↳  Key to Tropidocarpum
Tropidocarpum californicumKINGS GOLDNative
Tropidocarpum capparideumCAPER-FRUITED TROPIDOCARPUMNative
Tropidocarpum gracileNative
Tropidocarpum gracile var. dubium
(Under Tropidocarpum gracile)
Synonym (tjm2)
Tsuga
  ↳  Key to Tsuga
HEMLOCK
Tsuga heterophyllaWESTERN HEMLOCKNative
Tsuga mertensianaMOUNTAIN HEMLOCKNative
Tuberaria
Tuberaria guttataNaturalized
Tuctoria
  ↳  Key to Tuctoria
Tuctoria greeneiGREENE'S TUCTORIANative
Tuctoria mucronataCRAMPTON'S TUCTORIA, SOLANO GRASSNative
Tulipa
Tulipa clusianaTULIPNaturalized
Tumion californicum
(Under Torreya californica)
Synonym
Tunica prolifera
(Under Petrorhagia prolifera)
Synonym (tjm2)
Turricula parryi
(Under Eriodictyon parryi)
Synonym (tjm2)
TurritisTOWER MUSTARD
Turritis glabraNative
Twisselmannia californica
(Under Tropidocarpum californicum)
Synonym (tjm2)
Typha
  ↳  Key to Typha
CATTAIL
Typha angustifoliaNARROW-LEAVED CATTAILNative or naturalized
Typha domingensisSOUTHERN CATTAILNative
Typha latifoliaBROAD-LEAVED CATTAILNative
Typhaceae
  ↳  Key to Typhaceae
CATTAIL FAMILY