Jepson eFlora: Search page
Key to families Table of families and genera
  Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
 

Scientific Name

Index Page: S

Scientific NameCommon Name
Saccharum
Saccharum ravennaeRAVENNA GRASSNaturalized
Sagina
  ↳  Key to Sagina
PEARLWORT
Sagina apetalaDWARF PEARLWORTNaturalized
Sagina apetala var. barbata
(Under Sagina apetala)
Synonym
Sagina crassicaulis
(Under Sagina maxima subsp. crassicaulis)
Synonym (tjm2)
Sagina decumbens subsp. occidentalisWESTERN PEARLWORTNative
Sagina maxima subsp. crassicaulisTHICK-STEMMED PEARLWORTNative
Sagina occidentalis
(Under Sagina decumbens subsp. occidentalis)
Synonym (tjm2)
Sagina procumbensMATTED PEARLWORTNaturalized
Sagina saginoidesARCTIC PEARLWORTNative
Sagina saginoides var. hesperia
(Under Sagina saginoides)
Synonym (tjm2)
Sagina subulataSCOTTISH MOSSWaif
Sagittaria
  ↳  Key to Sagittaria
ARROWHEAD
Sagittaria brevirostra
(Under Sagittaria)
Mentioned in
a note
Sagittaria cuneataNative
Sagittaria latifoliaNative
Sagittaria longilobaNative
Sagittaria montevidensis subsp. calycinaNative
Sagittaria rigidaSESSILE-FRUITED ARROWHEADNaturalized
Sagittaria sanfordiiSANFORD'S ARROWHEADNative
Sairocarpus breweri
(Under Antirrhinum vexillocalyculatum subsp. breweri)
Synonym (tjm2)
Sairocarpus cornutus
(Under Antirrhinum cornutum)
Synonym (tjm2)
Sairocarpus coulterianus
(Under Antirrhinum coulterianum)
Synonym (tjm2)
Sairocarpus kingii
(Under Antirrhinum kingii)
Synonym (tjm2)
Sairocarpus multiflorus
(Under Antirrhinum multiflorum)
Synonym (tjm2)
Sairocarpus subcordatus
(Under Antirrhinum subcordatum)
Synonym (tjm2)
Sairocarpus virga
(Under Antirrhinum virga)
Synonym (tjm2)
Salazaria mexicana
(Under Scutellaria mexicana)
Synonym (tjm2)
Salicaceae
  ↳  Key to Salicaceae
WILLOW FAMILY
Salicornia
  ↳  Key to Salicornia
PICKLEWEED
Salicornia bigeloviiNative
Salicornia depressaNative
Salicornia europaea
(Under Salicornia depressa)
Synonym (tjm2)
Salicornia europaea
(Under Salicornia rubra)
Mentioned in
a note
Salicornia pacificaNative
Salicornia perennisNative
Salicornia rubraNative
Salicornia subterminalis
(Under Arthrocnemum subterminale)
Synonym (tjm2)
Salicornia subterminalis
(Under Salicornia)
Mentioned in
a note
Salicornia utahensis
(Under Salicornia pacifica)
Mentioned in
a note
Salicornia virginica
(Under Salicornia pacifica)
Synonym (tjm2)
Salicornia virginica
(Under Salicornia perennis)
Mentioned in
a note
Salix
  ↳  Key to Salix
WILLOW
Salix albaWHITE WILLOWNaturalized
Salix alba var. vitellina
(Under Salix alba)
Synonym
Salix arctica
(Under Salix petrophila)
Synonym (tjm2)
Salix arctica subsp. petraea
(Under Salix petrophila)
Synonym (tjm2)
Salix babylonicaWEEPING WILLOWNaturalized
Salix bebbianaBEBB'S WILLOWNative
Salix bonplandiana
(Under Salix)
Mentioned in
a note
Salix bonplandiana var. laevigata
(Under Salix laevigata)
Synonym (tjm2)
Salix boothiiBOOTH'S WILLOWNative
Salix brachycarpa subsp. brachycarpa
(Under Salix brachycarpa var. brachycarpa)
Synonym (tjm2)
Salix brachycarpa var. brachycarpaSHORT-FRUITED WILLOWNative
Salix breweriBREWER'S WILLOWNative
Salix cascadensis
(Under Salix petrophila)
Mentioned in
a note
Salix caudata var. bryantiana
(Under Salix lasiandra var. caudata)
Synonym (tjm2)
Salix commutata
(Under Salix)
Mentioned in
a note
Salix cordata var. mackenzieana
(Under Salix prolixa)
Synonym (tjm2)
Salix coulteri
(Under Salix sitchensis)
Synonym (tjm2)
Salix delnortensisDEL NORTE WILLOWNative
Salix drummondianaDRUMMOND'S WILLOWNative
Salix drummondiana
(Under Salix drummondiana)
Synonym (tjm2)
Salix eastwoodiaeSIERRA WILLOWNative
Salix eriocephala subsp. mackenzieana
(Under Salix prolixa)
Synonym (tjm2)
Salix eriocephala var. ligulifolia
(Under Salix ligulifolia)
Synonym (tjm2)
Salix eriocephala var. watsonii
(Under Salix lutea)
Synonym (tjm2)
Salix euxina
(Under Salix alba)
Mentioned in
a note
Salix exigua
  ↳  Key to Salix exigua
Native
Salix exigua subsp. melanopsis
(Under Salix melanopsis)
Synonym (tjm2)
Salix exigua var. exiguaNARROW-LEAVED WILLOW, COYOTE WILLOWNative
Salix exigua var. hindsianaHINDS' WILLOWNative
Salix exigua var. nevadensis
(Under Salix exigua var. exigua)
Synonym (tjm2)
Salix exigua var. stenophylla
(Under Salix exigua var. exigua)
Synonym (tjm2)
Salix fragilis
(Under Salix alba)
Mentioned in
a note
Salix geyerianaGEYER'S WILLOWNative
Salix geyeriana var. argentea
(Under Salix geyeriana)
Synonym (tjm2)
Salix gooddingiiGOODDING'S BLACK WILLOWNative
Salix gooddingii var. variabilis
(Under Salix gooddingii)
Synonym (tjm2)
Salix hindsiana
(Under Salix exigua var. hindsiana)
Synonym (tjm2)
Salix hindsiana var. leucodendroides
(Under Salix exigua var. hindsiana)
Synonym (tjm2)
Salix hindsiana var. parishiana
(Under Salix exigua var. hindsiana)
Synonym (tjm2)
Salix hookerianaCOASTAL WILLOWNative
Salix jepsoniiJEPSON'S WILLOWNative
Salix laevigataRED WILLOWNative
Salix laevigata f. araquipa
(Under Salix laevigata)
Synonym (tjm2)
Salix laevigata var. congesta
(Under Salix laevigata)
Synonym (tjm2)
Salix lasiandra
  ↳  Key to Salix lasiandra
Native
Salix lasiandra var. abramsii
(Under Salix lasiandra var. lasiandra)
Synonym (tjm2)
Salix lasiandra var. caudataTAIL-LEAF WILLOWNative
Salix lasiandra var. lancifolia
(Under Salix lasiandra var. lasiandra)
Synonym (tjm2)
Salix lasiandra var. lasiandraPACIFIC WILLOWNative
Salix lasiandra var. macrophylla
(Under Salix lasiandra var. lasiandra)
Synonym (tjm2)
Salix lasiolepisARROYO WILLOWNative
Salix lasiolepis var. bigelovii
(Under Salix lasiolepis)
Synonym (tjm2)
Salix lasiolepis var. bracelinae
(Under Salix lasiolepis)
Synonym (tjm2)
Salix lasiolepis var. lasiolepis
(Under Salix lasiolepis)
Synonym (tjm2)
Salix lasiolepis var. sandbergii
(Under Salix lasiolepis)
Synonym (tjm2)
Salix lemmoniiLEMMON'S WILLOWNative
Salix ligulifoliaSTRAP-LEAFED WILLOWNative
Salix lucida subsp. caudata
(Under Salix lasiandra var. caudata)
Synonym (tjm2)
Salix lucida subsp. lasiandra
(Under Salix lasiandra var. lasiandra)
Synonym (tjm2)
Salix luteaYELLOW WILLOWNative
Salix lutea var. nivaria
(Under Salix lasiolepis)
Synonym (tjm2)
Salix lutea var. watsonii
(Under Salix lutea)
Synonym (tjm2)
Salix mackenzieana
(Under Salix prolixa)
Synonym (tjm2)
Salix macrostachya var. leucodendroides
(Under Salix exigua var. hindsiana)
Synonym (tjm2)
Salix melanopsisDUSKY WILLOWNative
Salix melanopsis var. bolanderiana
(Under Salix melanopsis)
Synonym (tjm2)
Salix melanopsis var. gracilipes
(Under Salix melanopsis)
Synonym (tjm2)
Salix myrtillifolia
(Under Salix boothii)
Synonym
Salix nivalisSNOW WILLOWNative
Salix oresteraGRAY-LEAFED SIERRA WILLOWNative
Salix parksiana
(Under Salix melanopsis)
Synonym (tjm2)
Salix petrophilaROCKY MOUNTAIN WILLOWNative
Salix phylicifolia var. monica
(Under Salix planifolia)
Synonym (tjm2)
Salix piperi
(Under Salix hookeriana)
Synonym (tjm2)
Salix planifoliaTEA-LEAFED WILLOWNative
Salix planifolia subsp. planifolia
(Under Salix planifolia)
Synonym (tjm2)
Salix prolixaMACKENZIE'S WILLOWNative
Salix pseudocordata
(Under Salix boothii)
Synonym
Salix purpureaBASKET WILLOWNaturalized
Salix reticulata subsp. nivalis
(Under Salix nivalis)
Synonym (tjm2)
Salix scoulerianaSCOULER'S WILLOWNative
Salix scouleriana var. coetanea
(Under Salix scouleriana)
Synonym (tjm2)
Salix sessilifolia
(Under Salix)
Mentioned in
a note
Salix sessilifolia
(Under Salix exigua var. exigua)
Mentioned in
a note
Salix sitchensisSITKA WILLOWNative
Salix sitchensis var. angustifolia
(Under Salix jepsonii)
Synonym (tjm2)
Salix sitchensis var. ralphiana
(Under Salix jepsonii)
Synonym (tjm2)
Salix tracyiTRACY'S WILLOWNative
Salpichroa
Salpichroa origanifoliaNaturalized
Salpichroa rhomboidea
(Under Salpichroa origanifolia)
Synonym (tjm2)
Salsola
  ↳  Key to Salsola
Salsola atriplicifolia
(Under Cycloloma atriplicifolium)
Synonym
Salsola australisNaturalized
Salsola damascenaNaturalized
Salsola gobicolaNaturalized
Salsola iberica
(Under Salsola tragus)
Synonym
Salsola kali subsp. pontica
(Under Salsola australis)
Synonym (tjm2)
Salsola kali var. tenuifolia
(Under Salsola australis)
Synonym
Salsola kali var. tenuifolia
(Under Salsola tragus)
Synonym
Salsola paulseniiBARBWIRE RUSSIAN THISTLENaturalized
Salsola paulsenii, misappl., in part
(Under Salsola gobicola)
Synonym (tjm2)
Salsola pestifer
(Under Salsola tragus)
Synonym
Salsola ryaniiNaturalized
Salsola sodaNaturalized
Salsola tragusRUSSIAN THISTLE, TUMBLEWEEDNaturalized
Salsola tragus, misappl., in part
(Under Salsola australis)
Synonym (tjm2)
Salsola tragus, misappl., in part
(Under Salsola gobicola)
Mentioned in
a note
Salsola tragus, misappl., in part
(Under Salsola gobicola)
Synonym (tjm2)
Salsola vermiculata
(Under Salsola damascena)
Synonym (tjm2)
Saltugilia
  ↳  Key to Saltugilia
Saltugilia australisNative
Saltugilia caruifoliaCARAWAY-LEAVED WOODLAND-GILIANative
Saltugilia grinnellii
(Under Saltugilia splendens)
Synonym (tjm2)
Saltugilia latimeriLATIMER'S WOODLAND-GILIANative
Saltugilia splendensSPLENDID WOODLAND-GILIANative
Saltugilia splendens subsp. grantiiNative
Saltugilia splendens subsp. splendensNative
Salvia
  ↳  Key to Salvia
Salvia aethiopisMEDITERRANEAN SAGENaturalized
Salvia apianaWHITE SAGENative
Salvia apiana var. compacta
(Under Salvia apiana)
Mentioned in
a note
Salvia brandegeeiBRANDEGEE'S SAGENative
Salvia brandegei, orth. var.
(Under Salvia brandegeei)
Synonym (tjm2)
Salvia carduaceaTHISTLE SAGENative
Salvia carnosa subsp. gilmanii
(Under Salvia dorrii var. dorrii)
Synonym
Salvia clevelandiiNative
Salvia columbariaeCHIANative
Salvia columbariae var. ziegleri
(Under Salvia columbariae)
Synonym (tjm2)
Salvia dorriiNative
Salvia dorrii subsp. argentea
(Under Salvia dorrii var. dorrii)
Synonym
Salvia dorrii subsp. carnosa
(Under Salvia dorrii var. incana)
Synonym
Salvia dorrii subsp. gilmanii
(Under Salvia dorrii var. dorrii)
Synonym
Salvia dorrii var. carnosa
(Under Salvia dorrii var. incana)
Synonym
Salvia dorrii var. dorriiNative
Salvia dorrii var. incanaFLESHY SAGENative
Salvia dorrii var. pilosaNative
Salvia eremostachyaDESERT SAGENative
Salvia funereaDEATH VALLEY SAGENative
Salvia funerea var. fornacis
(Under Salvia funerea)
Synonym (tjm2)
Salvia greataeOROCOPIA SAGENative
Salvia leucophyllaPURPLE SAGENative
Salvia melliferaBLACK SAGENative
Salvia microphylla
(Under Salvia)
Mentioned in
a note
Salvia mohavensisNative
Salvia munziiMUNZ'S SAGENative
Salvia pachyphyllaNative
Salvia pratensis
(Under Salvia virgata)
Mentioned in
a note
Salvia sonomensisNative
Salvia spathaceaCALIFORNIA HUMMINGBIRD SAGENative
Salvia vaseyiNative
Salvia verbenacea
(Under Salvia)
Mentioned in
a note
Salvia virgataMEADOW SAGENaturalized
Salvinia
  ↳  Key to Salvinia
Salvinia minimaNaturalized
Salvinia molestaNaturalized
Salvinia oblongifoliaWaif
SalviniaceaeFLOATING-FERN or WATER-SPANGLE FAMILY
Sambucus
  ↳  Key to Sambucus
ELDERBERRY
Sambucus caerulea
(Under Sambucus nigra subsp. caerulea)
Synonym (tjm2)
Sambucus melanocarpa
(Under Sambucus racemosa var. melanocarpa)
Synonym (tjm2)
Sambucus mexicana
(Under Sambucus nigra subsp. caerulea)
Synonym (tjm2)
Sambucus microbotrys
(Under Sambucus racemosa var. racemosa)
Synonym (tjm2)
Sambucus nigra
(Under Orobanche vallicola)
Mentioned in
a note
Sambucus nigra subsp. caeruleaBLUE ELDERBERRYNative
Sambucus racemosaNative
Sambucus racemosa var. melanocarpaBLACK ELDERBERRYNative
Sambucus racemosa var. microbotrys
(Under Sambucus racemosa var. racemosa)
Synonym (tjm2)
Sambucus racemosa var. racemosaRED ELDERBERRYNative
Samolus
Samolus ebracteatus
(Under Samolus parviflorus)
Mentioned in
a note
Samolus floribundus
(Under Samolus parviflorus)
Synonym (tjm2)
Samolus parviflorusSEASIDE BROOKWEEDNative
Samolus valerandi subsp. parviflorus
(Under Samolus parviflorus)
Synonym (tjm2)
Sanguisorba
Sanguisorba annua
(Under Poteridium annuum)
Synonym (tjm2)
Sanguisorba minor
(Under Poterium sanguisorba)
Synonym (tjm2)
Sanguisorba minor subsp. muricata
(Under Poterium sanguisorba)
Synonym (tjm2)
Sanguisorba muricata
(Under Sanguisorba officinalis)
Synonym (tjm2)
Sanguisorba occidentalis
(Under Poteridium annuum)
Synonym (tjm2)
Sanguisorba officinalisGREAT BURNETNative
Sanguisorba officinalis subsp. microcephala
(Under Sanguisorba officinalis)
Mentioned in
a note
Sanicula
  ↳  Key to Sanicula
Sanicula arctopoidesFOOTSTEPS OF SPRING, YELLOW MATSNative
Sanicula argutaNative
Sanicula bipinnataPOISON SANICLENative
Sanicula bipinnatifidaPURPLE SANICLE, SHOE BUTTONSNative
Sanicula crassicaulisNative
Sanicula graveolensNative
Sanicula hoffmanniiHOFFMANN'S SANICLENative
Sanicula laciniataNative
Sanicula maritimaADOBE SANICLENative
Sanicula peckianaPECK'S SANICLENative
Sanicula saxatilisROCK SANICLENative
Sanicula simulans
(Under Sanicula arguta)
Synonym (tjm2)
Sanicula tracyiTRACY'S SANICLENative
Sanicula tuberosaNative
Santolina
Santolina chamaecyparissusLAVENDER-COTTONWaif
Santolina chamaecyparisus
(Under Asteraceae)
Mentioned in
a note
Santolina suaveolens
(Under Matricaria discoidea)
Synonym (tjm2)
Sanvitalia
Sanvitalia abertiiABERT'S SANVITALIANative
Sanvitalia procumbens
(Under Sanvitalia)
Mentioned in
a note
Sapindaceae
  ↳  Key to Sapindaceae
SOAPBERRY FAMILY
Sapium sebiferum
(Under Triadica sebifera)
Synonym (tjm2)
SaponariaSOAPWORT
Saponaria hispanica
(Under Vaccaria hispanica)
Synonym (tjm2)
Saponaria ocymoides
(Under Saponaria)
Mentioned in
a note
Saponaria officinalisNaturalized
Saponaria vaccaria
(Under Vaccaria hispanica)
Synonym (tjm2)
SarcobataceaeSARCOBATUS or GREASEWOOD FAMILY
Sarcobatus
  ↳  Key to Sarcobatus
GREASEWOOD
Sarcobatus baileyiNative
Sarcobatus maximilianii
(Under Sarcobatus vermiculatus)
Synonym
Sarcobatus vermiculatusNative
Sarcobatus vermiculatus var. baileyi
(Under Sarcobatus baileyi)
Synonym (tjm2)
Sarcocornia pacifica
(Under Salicornia pacifica)
Synonym (tjm2)
Sarcocornia perennis
(Under Salicornia perennis)
Synonym (tjm2)
SarcodesSNOW PLANT
Sarcodes sanguineaNative
Sarcostemma crispum
(Under Funastrum crispum)
Synonym
Sarcostemma cynanchoides subsp. hartwegii
(Under Funastrum cynanchoides var. hartwegii)
Synonym (tjm2)
Sarcostemma hirtellum
(Under Funastrum hirtellum)
Synonym (tjm2)
SarraceniaPITCHER-PLANT
Sarracenia purpureaNaturalized
Sarracenia purpurea subsp. purpurea
(Under Sarracenia purpurea)
Mentioned in
a note
Sarracenia purpurea subsp. venosa
(Under Sarracenia purpurea)
Mentioned in
a note
Sarraceniaceae
  ↳  Key to Sarraceniaceae
PITCHER-PLANT FAMILY
Satureja calamintha subsp. ascendens
(Under Lamiaceae)
Mentioned in
a note
Satureja chandleri
(Under Clinopodium chandleri)
Synonym (tjm2)
Satureja douglasii
(Under Clinopodium douglasii)
Synonym (tjm2)
Satureja mimuloides
(Under Clinopodium mimuloides)
Synonym (tjm2)
SaururaceaeLIZARD'S-TAIL FAMILY
Saussurea
Saussurea americanaAMERICAN SAW-WORTNative
Savastana hirta
(Under Anthoxanthum nitens subsp. nitens)
Synonym (tjm2)
Saviniona assurgentiflora
(Under Malva assurgentiflora)
Synonym (tjm2)
Saviniona clementina
(Under Malva assurgentiflora)
Synonym (tjm2)
Saviniona reticulata
(Under Malva assurgentiflora)
Synonym (tjm2)
Saxifraga
  ↳  Key to Saxifraga
SAXIFRAGE
Saxifraga aprica
(Under Micranthes aprica)
Synonym (tjm2)
Saxifraga bryophora
(Under Micranthes bryophora)
Synonym (tjm2)
Saxifraga bryophora var. bryophora
(Under Micranthes bryophora)
Synonym (tjm2)
Saxifraga californica
(Under Micranthes californica)
Synonym (tjm2)
Saxifraga cespitosaTUFTED SAXIFRAGENative
Saxifraga cespitosa var. emarginata
(Under Saxifraga cespitosa)
Synonym (tjm2)
Saxifraga ferruginea
(Under Micranthes ferruginea)
Synonym (tjm2)
Saxifraga ferruginea var. ferruginea
(Under Micranthes ferruginea)
Synonym (tjm2)
Saxifraga fragarioides
(Under Saxifragopsis fragarioides)
Synonym (tjm2)
Saxifraga howellii
(Under Micranthes howellii)
Synonym (tjm2)
Saxifraga hyperboreaNative
Saxifraga integrifolia
(Under Micranthes integrifolia)
Synonym (tjm2)
Saxifraga marshallii
(Under Micranthes marshallii)
Synonym (tjm2)
Saxifraga mertensianaNative
Saxifraga nidifica var. claytoniifolia
(Under Micranthes fragosa)
Synonym (tjm2)
Saxifraga nidifica var. nidifica
(Under Micranthes nidifica)
Synonym (tjm2)
Saxifraga nuttallii
(Under Cascadia nuttallii)
Synonym (tjm2)
Saxifraga odontoloma
(Under Micranthes odontoloma)
Synonym (tjm2)
Saxifraga oregana
(Under Micranthes oregana)
Synonym (tjm2)
Saxifraga peltata
(Under Darmera peltata)
Synonym (tjm2)
Saxifraga rivularis
(Under Saxifraga hyperborea)
Synonym (tjm2)
Saxifraga rufidula
(Under Micranthes marshallii)
Mentioned in
a note
Saxifraga stolonifera
(Under Saxifraga)
Mentioned in
a note
Saxifraga tolmiei
(Under Micranthes tolmiei)
Synonym (tjm2)
Saxifragaceae
  ↳  Key to Saxifragaceae
SAXIFRAGE FAMILY
Saxifragopsis
Saxifragopsis fragarioidesNative
Scabiosa
  ↳  Key to Scabiosa
PINCUSHION FLOWER
Scabiosa atropurpureaNaturalized
Scabiosa stellataWaif
Scandix
Scandix pecten-venerisVENUS' NEEDLENaturalized
SceptridiumGRAPE-FERN
Sceptridium multifidumLEATHER GRAPE-FERNNative
Schedonnardus paniculatus
(Under Poaceae)
Mentioned in
a note
Schedonorus arundinaceus
(Under Festuca arundinacea)
Synonym (tjm2)
Schedonorus phoenix
(Under Festuca arundinacea)
Synonym
Schedonorus pratensis
(Under Festuca pratensis)
Synonym (tjm2)
Scheuchzeria
Scheuchzeria palustrisSCHEUCHZERIANative
Scheuchzeria palustris subsp. americana
(Under Scheuchzeria palustris)
Synonym (tjm2)
Scheuchzeria palustris var. americana
(Under Scheuchzeria palustris)
Synonym (tjm2)
ScheuchzeriaceaeSCHEUCHZERIA FAMILY
Schinus
  ↳  Key to Schinus
Schinus mollePEPPER TREENaturalized
Schinus polygamusCHILEAN PEPPER TREENaturalized
Schinus terebinthifoliusBRAZILIAN PEPPER TREENaturalized
Schinus terebinthifolius var. raddianus
(Under Schinus terebinthifolius)
Synonym (tjm2)
Schismus
  ↳  Key to Schismus
MEDITERRANEAN GRASS
Schismus arabicusNaturalized
Schismus barbatusNaturalized
Schizachyrium cirratum
(Under Poaceae)
Mentioned in
a note
Schizachyrium scoparium
(Under Poaceae)
Mentioned in
a note
Schizococcus myrtifolius
(Under Arctostaphylos myrtifolia)
Synonym (tjm2)
Schizococcus nissenanus
(Under Arctostaphylos nissenana)
Synonym (tjm2)
Schkuhria multiflora
(Under Asteraceae)
Mentioned in
a note
Schkuhria multiflora
(Under Picradeniopsis multiflora)
Synonym (tjm2)
Schkuhria multiflora var. multiflora
(Under Picradeniopsis multiflora)
Synonym (tjm2)
Schmaltzia trilobata
(Under Rhus aromatica)
Synonym (tjm2)
Schoenolirion album
(Under Hastingsia alba)
Synonym (tjm2)
Schoenoplectus
  ↳  Key to Schoenoplectus
NAKED-STEMMED BULRUSHES
Schoenoplectus acutus var. acutus
(Under Schoenoplectus acutus var. occidentalis)
Mentioned in
a note
Schoenoplectus acutus var. occidentalisCOMMON TULENative
Schoenoplectus americanusOLNEY'S THREE-SQUARE BULRUSHNative
Schoenoplectus californicusSOUTHERN BULRUSHNative
Schoenoplectus fluviatilis
(Under Bolboschoenus fluviatilis)
Synonym (tjm2)
Schoenoplectus glaucus
(Under Bolboschoenus glaucus)
Synonym (tjm2)
Schoenoplectus heterochaetusSLENDER BULRUSHNative
Schoenoplectus mucronatusROUGH-SEED BULRUSH, RICE-FIELD BULRUSHNaturalized
Schoenoplectus pungens
(Under Amphiscirpus nevadensis)
Mentioned in
a note
Schoenoplectus pungens
(Under Schoenoplectus americanus)
Mentioned in
a note
Schoenoplectus pungens var. badius
(Under Schoenoplectus pungens var. longispicatus)
Synonym (tjm2)
Schoenoplectus pungens var. longispicatusCOMMON THREE-SQUARE BULRUSHNative
Schoenoplectus pungens var. pungens
(Under Schoenoplectus pungens var. longispicatus)
Mentioned in
a note
Schoenoplectus robustus
(Under Bolboschoenus robustus)
Synonym (tjm2)
Schoenoplectus saximontanusROCKY MOUNTAIN BULRUSHNative
Schoenoplectus subterminalisWATER BULRUSHNative
Schoenoplectus tabernaemontaniSOFT-STEM BULRUSHNative
Schoenoplectus triqueterTHREE-SIDED BULRUSHHistorical waif
Schoenus
Schoenus nigricansBLACK BOG-RUSHNative
Scirpus
  ↳  Key to Scirpus
BULRUSH
Scirpus acutus var. occidentalis
(Under Schoenoplectus acutus var. occidentalis)
Synonym (tjm2)
Scirpus albomarginatus
(Under Eleocharis quadrangulata)
Synonym (tjm2)
Scirpus alpinus
(Under Trichophorum pumilum)
Synonym (tjm2)
Scirpus americanus
(Under Schoenoplectus americanus)
Synonym (tjm2)
Scirpus americanus subsp. monophyllus
(Under Schoenoplectus pungens var. longispicatus)
Synonym (tjm2)
Scirpus americanus var. longispicatus
(Under Schoenoplectus pungens var. longispicatus)
Synonym (tjm2)
Scirpus atropurpureus
(Under Eleocharis atropurpurea)
Synonym (tjm2)
Scirpus autumnalis
(Under Fimbristylis autumnalis)
Synonym (tjm2)
Scirpus bernardinus
(Under Eleocharis bernardina)
Synonym (tjm2)
Scirpus californicus
(Under Schoenoplectus californicus)
Synonym (tjm2)
Scirpus campestris
(Under Bolboschoenus maritimus subsp. paludosus)
Synonym (tjm2)
Scirpus capillaris
(Under Bulbostylis capillaris)
Synonym (tjm2)
Scirpus carinatus
(Under Isolepis carinata)
Synonym (tjm2)
Scirpus cernuus
(Under Isolepis cernua)
Synonym (tjm2)
Scirpus cernuus subsp. californicus
(Under Isolepis cernua)
Synonym (tjm2)
Scirpus cernuus var. californicus
(Under Isolepis cernua)
Synonym (tjm2)
Scirpus clementis
(Under Trichophorum clementis)
Synonym (tjm2)
Scirpus coloradoensis
(Under Eleocharis coloradoensis)
Synonym (tjm2)
Scirpus congdoniiNative
Scirpus cyperinusNaturalized
Scirpus diffususNative
Scirpus emergens
(Under Trichophorum pumilum)
Synonym (tjm2)
Scirpus fluviatilis
(Under Bolboschoenus fluviatilis)
Synonym (tjm2)
Scirpus geniculatus
(Under Eleocharis geniculata)
Synonym (tjm2)
Scirpus glaucus
(Under Bolboschoenus glaucus)
Synonym (tjm2)
Scirpus heterochaetus
(Under Schoenoplectus heterochaetus)
Synonym (tjm2)
Scirpus koilolepis
(Under Isolepis carinata)
Synonym (tjm2)
Scirpus lacustris var. tenuiculmis
(Under Schoenoplectus heterochaetus)
Synonym (tjm2)
Scirpus marginatus
(Under Eleocharis quadrangulata)
Synonym (tjm2)
Scirpus maritimus
(Under Bolboschoenus maritimus subsp. paludosus)
Synonym (tjm2)
Scirpus maritimus var. fluviatilis
(Under Bolboschoenus fluviatilis)
Synonym (tjm2)
Scirpus maritimus var. paludosus
(Under Bolboschoenus maritimus subsp. paludosus)
Synonym (tjm2)
Scirpus microcarpusNative
Scirpus microcarpus var. rubrotinctus
(Under Scirpus microcarpus)
Synonym (tjm2)
Scirpus mucronatus
(Under Schoenoplectus mucronatus)
Synonym (tjm2)
Scirpus nanus
(Under Eleocharis parvula)
Synonym (tjm2)
Scirpus nevadensis
(Under Amphiscirpus nevadensis)
Synonym (tjm2)
Scirpus obtusus
(Under Eleocharis obtusa)
Synonym (tjm2)
Scirpus olneyi
(Under Schoenoplectus americanus)
Synonym (tjm2)
Scirpus ovatus
(Under Eleocharis ovata)
Synonym (tjm2)
Scirpus pacificus
(Under Bolboschoenus maritimus subsp. paludosus)
Synonym (tjm2)
Scirpus paludosus
(Under Bolboschoenus maritimus subsp. paludosus)
Synonym (tjm2)
Scirpus palustris
(Under Eleocharis palustris)
Synonym (tjm2)
Scirpus parvulus
(Under Eleocharis parvula)
Synonym (tjm2)
Scirpus pauciflorus
(Under Eleocharis quinqueflora)
Synonym (tjm2)
Scirpus pendulusPENDULOUS BULRUSHNative
Scirpus pumilus
(Under Trichophorum pumilum)
Synonym (tjm2)
Scirpus pumilus subsp. rollandii
(Under Trichophorum pumilum)
Synonym (tjm2)
Scirpus pumilus var. rollandii
(Under Trichophorum pumilum)
Synonym (tjm2)
Scirpus pungens
(Under Schoenoplectus pungens var. longispicatus)
Synonym (tjm2)
Scirpus quadrangulatus
(Under Eleocharis quadrangulata)
Synonym (tjm2)
Scirpus quinqueflorus
(Under Eleocharis quinqueflora)
Synonym (tjm2)
Scirpus radicans
(Under Eleocharis radicans)
Synonym (tjm2)
Scirpus robustus
(Under Bolboschoenus robustus)
Synonym (tjm2)
Scirpus rollandii
(Under Trichophorum pumilum)
Synonym (tjm2)
Scirpus rostellatus
(Under Eleocharis rostellata)
Synonym (tjm2)
Scirpus rubrotinctus
(Under Scirpus microcarpus)
Synonym (tjm2)
Scirpus saximontanus
(Under Schoenoplectus saximontanus)
Synonym (tjm2)
Scirpus setaceus
(Under Isolepis setacea)
Synonym (tjm2)
Scirpus subterminalis
(Under Schoenoplectus subterminalis)
Synonym (tjm2)
Scirpus tabernaemontani
(Under Schoenoplectus tabernaemontani)
Synonym (tjm2)
Scirpus tuberosus
(Under Bolboschoenus glaucus)
Synonym (tjm2)
Scirpus vahlii
(Under Fimbristylis vahlii)
Synonym (tjm2)
Scirpus yosemitanus
(Under Trichophorum clementis)
Synonym (tjm2)
ScleranthusKNAWEL
Scleranthus annuus subsp. annuusNaturalized
Sclerocactus
  ↳  Key to Sclerocactus
PINEAPPLE CACTUS
Sclerocactus johnsoniiJOHNSON'S BEE-HIVE CACTUSNative
Sclerocactus polyancistrusMOJAVE FISHHOOK CACTUSNative
Sclerochloa
Sclerochloa duraHARDGRASS, FAIRGROUND GRASSNaturalized
Sclerolinon
Sclerolinon digynumNative
Scleropoa rigida
(Under Desmazeria rigida)
Synonym (tjm2)
Scleropogon
Scleropogon brevifoliusBURRO GRASSNative
Scoliopus
Scoliopus bigeloviiNative
ScolymusGOLDENTHISTLE
Scolymus hispanicusNaturalized
Scopulophila
Scopulophila rixfordiiRIXFORD ROCKWORTNative
Scorzonera
Scorzonera hispanicaSPANISH SALSIFY, VIPER'S GRASSNaturalized
ScribneriaSCRIBNER GRASS
Scribneria bolanderiNative
Scrophularia
  ↳  Key to Scrophularia
FIGWORT
Scrophularia atrataBLACK-FLOWERED FIGWORTNative
Scrophularia californicaCALIFORNIA FIGWORTNative
Scrophularia californica subsp. californica
(Under Scrophularia californica)
Synonym (tjm2)
Scrophularia californica subsp. floribunda
(Under Scrophularia californica)
Synonym (tjm2)
Scrophularia californica var. floribunda
(Under Scrophularia californica)
Synonym (tjm2)
Scrophularia desertorumNative
Scrophularia lanceolataNative
Scrophularia oregana
(Under Scrophularia californica)
Mentioned in
a note
Scrophularia peregrinaNaturalized
Scrophularia villosaSANTA CATALINA FIGWORTNative
Scrophulariaceae
  ↳  Key to Scrophulariaceae
FIGWORT FAMILY
Scutellaria
  ↳  Key to Scutellaria
SKULLCAP
Scutellaria angustifolia var. canescens
(Under Scutellaria siphocampyloides)
Synonym
Scutellaria antirrhinoidesNative
Scutellaria austiniae
(Under Scutellaria siphocampyloides)
Synonym
Scutellaria bolanderiNative
Scutellaria bolanderi subsp. austromontanaSOUTHERN MOUNTAINS SKULLCAPNative
Scutellaria bolanderi subsp. bolanderiNative
Scutellaria californicaNative
Scutellaria galericulataMARSH SKULLCAPNative
Scutellaria holmgreniorum
(Under Scutellaria nana)
Synonym (tjm2)
Scutellaria laterifloraSIDE-FLOWERING SKULLCAPNative
Scutellaria linearifolia
(Under Scutellaria siphocampyloides)
Synonym
Scutellaria mexicanaBLADDER-SAGENative
Scutellaria nanaNative
Scutellaria pilosiuscula
(Under Scutellaria tuberosa)
Synonym
Scutellaria sanhedrinsis
(Under Scutellaria antirrhinoides)
Synonym
Scutellaria siphocampyloidesNative
Scutellaria tuberosaNative
Scutellaria tuberosa subsp. similis
(Under Scutellaria tuberosa)
Synonym
Scutellaria viarum
(Under Scutellaria antirrhinoides)
Synonym
Searsia
Searsia lanceaAFRICAN SUMACNaturalized
SecaleRYE
Secale cerealeNaturalized
Securigera varia
(Under Coronilla varia)
Synonym (tjm2)
Sedella
  ↳  Key to Sedella
Sedella congdonii
(Under Sedella pumila)
Synonym (tjm2)
Sedella leiocarpaLAKE COUNTY STONECROPNative
Sedella pentandraNative
Sedella pumilaNative
Sedum
  ↳  Key to Sedum
STONECROP
Sedum albomarginatumFEATHER RIVER STONECROPNative
Sedum albumWHITE STONECROPNaturalized
Sedum congdonii
(Under Sedella pumila)
Synonym (tjm2)
Sedum dendroideum subsp. praealtum
(Under Sedum praealtum)
Synonym (tjm2)
Sedum divergensCASCADE STONECROPNative
Sedum eastwoodiae
(Under Sedum laxum subsp. eastwoodiae)
Synonym (tjm2)
Sedum lanceolatumSPEARLEAF STONECROPNative
Sedum lanceolatum subsp. lanceolatum
(Under Sedum lanceolatum)
Synonym (tjm2)
Sedum lanceolatum var. subalpinum
(Under Sedum lanceolatum)
Synonym (tjm2)
Sedum laxumNative
Sedum laxum subsp. eastwoodiaeRED MOUNTAIN STONECROPNative
Sedum laxum subsp. flavidumPALE-YELLOW STONECROPNative
Sedum laxum subsp. heckneriHECKNER'S STONECROPNative
Sedum laxum subsp. latifolium
(Under Sedum laxum subsp. laxum)
Synonym (tjm2)
Sedum laxum subsp. laxumROSEFLOWER STONECROPNative
Sedum laxum subsp. perplexum
(Under Sedum laxum subsp. laxum)
Synonym (tjm2)
Sedum laxum subsp. retusum
(Under Sedum obtusatum subsp. retusum)
Synonym (tjm2)
Sedum laxum var. eastwoodiae
(Under Sedum laxum subsp. eastwoodiae)
Synonym (tjm2)
Sedum laxum var. flavidum
(Under Sedum laxum subsp. flavidum)
Synonym (tjm2)
Sedum laxum var. heckneri
(Under Sedum laxum subsp. heckneri)
Synonym (tjm2)
Sedum laxum var. latifolium
(Under Sedum laxum subsp. laxum)
Synonym (tjm2)
Sedum laxum var. laxum
(Under Sedum laxum subsp. laxum)
Synonym (tjm2)
Sedum niveumDAVIDSON'S STONECROPNative
Sedum oblanceolatumAPPLEGATE STONECROPNative
Sedum obtusatumSIERRA STONECROPNative
Sedum obtusatum subsp. borealeNative
Sedum obtusatum subsp. obtusatumNative
Sedum obtusatum subsp. paradisumCANYON CREEK STONECROPNative
Sedum obtusatum subsp. retusumNative
Sedum obtusatum var. boreale
(Under Sedum obtusatum subsp. boreale)
Synonym (tjm2)
Sedum obtusatum var. hallii
(Under Sedum obtusatum subsp. obtusatum)
Synonym (tjm2)
Sedum obtusatum var. obtusatum
(Under Sedum obtusatum subsp. obtusatum)
Synonym (tjm2)
Sedum obtusatum var. paradisum
(Under Sedum obtusatum subsp. paradisum)
Synonym (tjm2)
Sedum obtusatum var. retusum
(Under Sedum obtusatum subsp. retusum)
Synonym (tjm2)
Sedum oreganumOREGON STONECROPNative
Sedum oregonenseCREAM STONECROPNative
Sedum paradisum
(Under Sedum obtusatum subsp. paradisum)
Synonym (tjm2)
Sedum pinetorum
(Under Sedum niveum)
Synonym (tjm2)
Sedum praealtumGREEN COCKSCOMBNaturalized
Sedum purdyi
(Under Sedum spathulifolium)
Synonym (tjm2)
Sedum radiatumCOAST RANGE STONECROPNative
Sedum radiatum subsp. depauperatum
(Under Sedum radiatum)
Synonym (tjm2)
Sedum radiatum subsp. radiatum
(Under Sedum radiatum)
Synonym (tjm2)
Sedum radiatum var. depauperatum
(Under Sedum radiatum)
Synonym (tjm2)
Sedum rosea subsp. integrifolium
(Under Rhodiola integrifolia subsp. integrifolia)
Synonym (tjm2)
Sedum roseum
(Under Sedum)
Mentioned in
a note
Sedum roseum subsp. integrifolium
(Under Rhodiola integrifolia subsp. integrifolia)
Synonym (tjm2)
Sedum sanhedrinum
(Under Sedum obtusatum subsp. retusum)
Synonym (tjm2)
Sedum spathulifoliumBROADLEAF STONECROPNative
Sedum spathulifolium subsp. anomalum
(Under Sedum spathulifolium)
Synonym (tjm2)
Sedum spathulifolium subsp. pruinosum
(Under Sedum spathulifolium)
Synonym (tjm2)
Sedum spathulifolium subsp. purdyi
(Under Sedum spathulifolium)
Synonym (tjm2)
Sedum spathulifolium subsp. spathulifolium
(Under Sedum spathulifolium)
Synonym (tjm2)
Sedum spathulifolium var. pruinosum
(Under Sedum spathulifolium)
Synonym (tjm2)
Sedum stenopetalumNative
Sedum stenopetalum subsp. monanthum
(Under Sedum stenopetalum)
Synonym (tjm2)
Sedum stenopetalum subsp. radiatum
(Under Sedum radiatum)
Synonym (tjm2)
Sedum stenopetalum var. monanthum
(Under Sedum stenopetalum)
Synonym (tjm2)
Selaginella
  ↳  Key to Selaginella
SPIKE-MOSS
Selaginella asprellaBLUISH SPIKE-MOSSNative
Selaginella bigeloviiNative
Selaginella cinerascensASHY SPIKE-MOSSNative
Selaginella densa var. scopulorum
(Under Selaginella scopulorum)
Synonym (tjm2)
Selaginella eremophilaDESERT SPIKE-MOSSNative
Selaginella hanseniiNative
Selaginella kraussiana
(Under Selaginella)
Mentioned in
a note
Selaginella lepidophylla
(Under Selaginella)
Mentioned in
a note
Selaginella leucobryoidesMOJAVE SPIKE-MOSSNative
Selaginella oreganaNative
Selaginella scopulorumROCKY MOUNTAIN SPIKE-MOSSNative
Selaginella wallaceiNative
Selaginella watsoniiNative
SelaginellaceaeSPIKE-MOSS FAMILY
Selinocarpus diffusus subsp. nevadensis
(Under Acleisanthes nevadensis)
Synonym (tjm2)
Selinocarpus nevadensis
(Under Acleisanthes nevadensis)
Synonym (tjm2)
Senecio
  ↳  Key to Senecio
RAGWORT, GROUNDSEL, BUTTERWEED
Senecio aphanactisCHAPARRAL RAGWORTNative
Senecio aronicoidesRAYLESS RAGWORTNative
Senecio astephanusSAN GABRIEL RAGWORTNative
Senecio bernardinus
(Under Packera bernardina)
Synonym (tjm2)
Senecio blochmaniaeBLOCHMAN'S RAGWORTNative
Senecio bolanderi
(Under Packera bolanderi var. bolanderi)
Synonym (tjm2)
Senecio bolanderi var. bolanderi
(Under Packera bolanderi var. bolanderi)
Synonym (tjm2)
Senecio breweri
(Under Packera breweri)
Synonym (tjm2)
Senecio californicusCALIFORNIA RAGWORTNative
Senecio canus
(Under Packera cana)
Synonym (tjm2)
Senecio clarkianusCLARK'S RAGWORTNative
Senecio clevelandii
(Under Packera clevelandii)
Synonym (tjm2)
Senecio covillei
(Under Senecio scorzonella)
Synonym (tjm2)
Senecio cymbalarioides
(Under Packera subnuda var. subnuda)
Synonym (tjm2)
Senecio douglasii
(Under Senecio flaccidus var. douglasii)
Synonym (tjm2)
Senecio douglasii var. tularensis
(Under Senecio flaccidus var. douglasii)
Synonym (tjm2)
Senecio elegansRED-PURPLE RAGWORTNaturalized
Senecio eurycephalus var. eurycephalus
(Under Packera eurycephala var. eurycephala)
Synonym (tjm2)
Senecio eurycephalus var. lewisrosei
(Under Packera eurycephala var. lewisrosei)
Synonym (tjm2)
Senecio flaccidusTHREADLEAF RAGWORTNative
Senecio flaccidus var. douglasiiDOUGLAS' THREADLEAF RAGWORTNative
Senecio flaccidus var. monoensisSMOOTH THREADLEAF RAGWORTNative
Senecio foetidus
(Under Senecio hydrophiloides)
Synonym (tjm2)
Senecio foetidus var. hydrophiloides
(Under Senecio hydrophiloides)
Synonym (tjm2)
Senecio fremontiiNative
Senecio fremontii var. fremontiiDWARF MOUNTAIN RAGWORTNative
Senecio fremontii var. occidentalisWESTERN DWARF MOUNTAIN RAGWORTNative
Senecio ganderi
(Under Packera ganderi)
Synonym (tjm2)
Senecio glomeratusCUTLEAF BURNWEEDNaturalized
Senecio greenei
(Under Packera greenei)
Synonym (tjm2)
Senecio hesperius
(Under Packera hesperia)
Synonym
Senecio hieraciifolius var. hieraciifolius
(Under Senecio)
Mentioned in
a note
Senecio hybridus
(Under Senecio)
Mentioned in
a note
Senecio hydrophiloidesSWEET MARSH RAGWORTNative
Senecio hydrophilusWATER RAGWORT, ALKALI-MARSH RAGWORTNative
Senecio indecorus
(Under Packera indecora)
Synonym (tjm2)
Senecio integerrimusNative
Senecio integerrimus var. exaltatusCOLUMBIA RAGWORTNative
Senecio integerrimus var. majorLAMBS-TONGUE RAGWORTNative
Senecio integerrimus var. ochroleucusPALE-YELLOW RAGWORTNative
Senecio ionophyllus
(Under Packera ionophylla)
Synonym (tjm2)
Senecio jacobaeaTANSY RAGWORTNaturalized
Senecio layneae
(Under Packera layneae)
Synonym (tjm2)
Senecio linearifolius var. linearifoliusLINEAR-LEAVED AUSTRALIAN FIREWEEDNaturalized
Senecio lyoniiISLAND SENECIONative
Senecio macounii
(Under Packera macounii)
Synonym (tjm2)
Senecio mikanioides
(Under Delairea odorata)
Synonym (tjm2)
Senecio minimusCOASTAL BURNWEEDNaturalized
Senecio mohavensisMOJAVE RAGWORTNative
Senecio mohavensis subsp. breviflorus
(Under Senecio mohavensis)
Mentioned in
a note
Senecio multilobatus
(Under Packera multilobata)
Synonym (tjm2)
Senecio pattersonensisMOUNT PATTERSON SENECIONative
Senecio pauciflorus
(Under Packera pauciflora)
Synonym (tjm2)
Senecio pseudaureus var. pseudaureus
(Under Packera pseudaurea var. pseudaurea)
Synonym (tjm2)
Senecio quadridentatusCOTTON BURNWEEDNaturalized
Senecio scorzonellaSIERRA RAGWORTNative
Senecio serra var. serraTALL RAGWORT, SAWTOOTH GROUNDSELNative
Senecio spartioidesBROOM-LIKE RAGWORTNative
Senecio spartioides var. multicapitatus
(Under Senecio spartioides)
Synonym (tjm2)
Senecio squalidus
(Under Senecio)
Mentioned in
a note
Senecio streptanthifolius
(Under Packera streptanthifolia var. streptanthifolia)
Synonym (tjm2)
Senecio sylvaticusWOODLAND RAGWORTNaturalized
Senecio triangularisARROWLEAF RAGWORTNative
Senecio vulgarisCOMMON GROUNDSELNaturalized
Senecio werneriifolius
(Under Packera werneriifolia)
Synonym (tjm2)
Senegalia
Senegalia greggiiCATCLAW, DEVIL'S CLAWNative
Senna
  ↳  Key to Senna
Senna armataSPINY SENNANative
Senna artemisioidesSILVER SENNANaturalized
Senna covesiiCOUES' CASSIANative
Senna didymobotryaNaturalized
Senna eremophila
(Under Senna artemisioides)
Synonym (tjm2)
Senna marilandicaMARYLAND SENNAWaif
Senna multiglandulosaNaturalized
SequoiaREDWOOD
Sequoia sempervirensNative
SequoiadendronGIANT SEQUOIA
Sequoiadendron giganteumNative
SericocarpusWHITE-TOPPED ASTER
Sericocarpus oregonensis
  ↳  Key to Sericocarpus oregonensis
Native
Sericocarpus oregonensis subsp. californicusNative
Sericocarpus oregonensis subsp. oregonensisNative
Sericocarpus oregonensis var. californicus
(Under Sericocarpus oregonensis subsp. californicus)
Synonym (tjm2)
Sericocarpus oregonensis var. oregonensis
(Under Sericocarpus oregonensis subsp. oregonensis)
Synonym (tjm2)
Sericocarpus tomentellus
(Under Eucephalus tomentellus)
Synonym (tjm2)
Sesbania
  ↳  Key to Sesbania
Sesbania exaltata
(Under Sesbania herbacea)
Synonym (tjm2)
Sesbania herbaceaBIGPOD SESBANIA, COFFEE WEED, COLORADO RIVER HEMPNative
Sesbania puniceaSCARLET SESBANNaturalized
Sesbania tripetii
(Under Sesbania punicea)
Synonym (tjm2)
SesuviumSEA-PURSLANE
Sesuvium portulacastrum
(Under Trianthema portulacastrum)
Synonym (tjm2)
Sesuvium verrucosumWESTERN SEA-PURSLANENative
Setaria
  ↳  Key to Setaria
BRISTLE GRASS
Setaria adhaerensBUR BRISTLE GRASSNaturalized
Setaria carnei
(Under Setaria verticillata)
Synonym (tjm2)
Setaria faberiCHINESE FOXTAILNaturalized
Setaria geniculata
(Under Setaria parviflora)
Synonym (tjm2)
Setaria glauca
(Under Setaria pumila subsp. pumila)
Synonym
Setaria gracilis
(Under Setaria parviflora)
Synonym (tjm2)
Setaria italica
(Under Setaria)
Mentioned in
a note
Setaria lutescens
(Under Setaria pumila subsp. pumila)
Synonym
Setaria megaphylla
(Under Setaria)
Mentioned in
a note
Setaria parvifloraKNOTROOT BRISTLE GRASSNative
Setaria pumila subsp. pumilaYELLOW BRISTLE GRASSNaturalized
Setaria sphacelataAFRICAN BRISTLE GRASSNaturalized
Setaria verticillataHOOKED BRISTLE GRASSNaturalized
Setaria verticilliformis
(Under Setaria)
Mentioned in
a note
Setaria viridisGREEN BRISTLE GRASSNaturalized
Seubertia crocea
(Under Triteleia crocea)
Synonym (tjm2)
Seubertia laxa
(Under Triteleia laxa)
Synonym (tjm2)
Seubertia obscura
(Under Triteleia laxa)
Synonym (tjm2)
Shepherdia
  ↳  Key to Shepherdia
Shepherdia argenteaBUFFALO-BERRYNative
Shepherdia canadensisCANADIAN BUFFALO-BERRYNative
Sherardia
Sherardia arvensisFIELD MADDERNaturalized
Sibara
  ↳  Key to Sibara
Sibara desertiDESERT WINGED ROCKCRESSNative
Sibara filifoliaSANTA CRUZ ISLAND ROCKCRESSNative
Sibara rosulata
(Under Sibara deserti)
Synonym (tjm2)
Sibara virginica
(Under Planodes virginica)
Synonym (tjm2)
Sibara virginica
(Under Sibara)
Mentioned in
a note
Sibaropsis
Sibaropsis hammittiiHAMMITT'S CLAY-CRESSNative
Sibbaldia
Sibbaldia procumbensNative
Sida
  ↳  Key to Sida
Sida abutifolia
(Under Sida)
Mentioned in
a note
Sida leprosa var. hederacea
(Under Malvella leprosa)
Synonym (tjm2)
Sida rhombifoliaSIDA, RHOMBUS-LEAVED SIDAWaif
Sida spinosaPRICKLY SIDAAgricultural weed
Sidalcea
  ↳  Key to Sidalcea
CHECKERBLOOM
Sidalcea asprellaNative
Sidalcea asprella subsp. asprellaHARSH CHECKERBLOOM, SIERRA FOOTHILLS CHECKERBLOOMNative
Sidalcea asprella subsp. nanaDWARF SIERRAN CHECKERBLOOMNative
Sidalcea calycosaVERNAL POOL CHECKERBLOOMNative
Sidalcea calycosa subsp. calycosaVERNAL POOL CHECKERBLOOM, HOGWALLOW CHECKERBLOOMNative
Sidalcea calycosa subsp. rhizomataPOINT REYES CHECKERBLOOMNative
Sidalcea celataREDDING CHECKERBLOOMNative
Sidalcea covilleiOWENS VALLEY CHECKERBLOOMNative
Sidalcea delphiniifolia
(Under Sidalcea malviflora subsp. malviflora)
Synonym (tjm2)
Sidalcea diploscyphaFRINGED CHECKERBLOOMNative
Sidalcea elegansDEL NORTE CHECKERBLOOMNative
Sidalcea favosa
(Under Sidalcea reptans)
Mentioned in
a note
Sidalcea favosa
(Under Sidalcea reptans)
Synonym (tjm2)
Sidalcea giganteaGIANT CHECKERBLOOMNative
Sidalcea glaucescensWAXY CHECKERBLOOMNative
Sidalcea hartwegiiHARTWEG'S CHECKERBLOOMNative
Sidalcea hickmaniiNative
Sidalcea hickmanii subsp. anomalaCUESTA PASS CHECKERBLOOMNative
Sidalcea hickmanii subsp. hickmaniiHICKMAN'S CHECKERBLOOMNative
Sidalcea hickmanii subsp. napensisNAPA CHECKERBLOOMNative
Sidalcea hickmanii subsp. parishiiPARISH'S CHECKERBLOOMNative
Sidalcea hickmanii subsp. pillsburiensisLAKE PILLSBURY CHECKERBLOOMNative
Sidalcea hickmanii subsp. viridisMARIN CHECKERBLOOMNative
Sidalcea hickmanii var. parishii
(Under Sidalcea hickmanii subsp. parishii)
Synonym (tjm2)
Sidalcea hirsutaHAIRY CHECKERBLOOMNative
Sidalcea keckiiKECK'S CHECKERBLOOMNative
Sidalcea malachroidesMAPLE-LEAVED CHECKERBLOOMNative
Sidalcea malvifloraCHECKERBLOOM, CHECKERMALLOWNative
Sidalcea malviflora subsp. asprella
(Under Sidalcea asprella subsp. asprella)
Synonym (tjm2)
Sidalcea malviflora subsp. californicaCHAPARRAL CHECKERBLOOM, CALIFORNIA CHECKERBLOOMNative
Sidalcea malviflora subsp. celata
(Under Sidalcea celata)
Synonym (tjm2)
Sidalcea malviflora subsp. dolosaBEAR VALLEY CHECKERBLOOMNative
Sidalcea malviflora subsp. elegans
(Under Sidalcea elegans)
Synonym (tjm2)
Sidalcea malviflora subsp. laciniataGERANIUM-LEAVED CHECKERBLOOMNative
Sidalcea malviflora subsp. malvifloraNative
Sidalcea malviflora subsp. nana
(Under Sidalcea asprella subsp. nana)
Synonym (tjm2)
Sidalcea malviflora subsp. patulaSISKIYOU CHECKERBLOOMNative
Sidalcea malviflora subsp. purpureaPURPLE-STEMMED CHECKERBLOOMNative
Sidalcea malviflora subsp. rostrataSEACLIFF CHECKERBLOOMNative
Sidalcea malviflora subsp. sparsifolia
(Under Sidalcea sparsifolia)
Synonym (tjm2)
Sidalcea malviflora var. celata
(Under Sidalcea celata)
Synonym (tjm2)
Sidalcea malviflora var. hirsuta
(Under Sidalcea sparsifolia)
Synonym (tjm2)
Sidalcea malviflora var. stellata
(Under Sidalcea sparsifolia)
Synonym (tjm2)
Sidalcea malviflora var. uliginosa
(Under Sidalcea sparsifolia)
Synonym (tjm2)
Sidalcea montana
(Under Sidalcea glaucescens)
Synonym (tjm2)
Sidalcea multifidaCUT-LEAF CHECKERBLOOMNative
Sidalcea neomexicanaSALT SPRING CHECKERBLOOMNative
Sidalcea neomexicana subsp. thurberi
(Under Sidalcea neomexicana)
Synonym (tjm2)
Sidalcea oreganaNative
Sidalcea oregana subsp. eximiaCOAST CHECKERBLOOMNative
Sidalcea oregana subsp. hydrophilaMARSH CHECKERBLOOMNative
Sidalcea oregana subsp. oreganaOREGON CHECKERBLOOMNative
Sidalcea oregana subsp. spicataNative
Sidalcea oregana subsp. validaKENWOOD MARSH CHECKERBLOOMNative
Sidalcea oregana var. maxima
(Under Sidalcea oregana subsp. oregana)
Mentioned in
a note
Sidalcea pedataBIRD-FOOT CHECKERBLOOMNative
Sidalcea ranunculaceaNative
Sidalcea reptansNative
Sidalcea reptans var. nana
(Under Sidalcea asprella subsp. nana)
Synonym (tjm2)
Sidalcea rhizomata
(Under Sidalcea calycosa subsp. rhizomata)
Synonym (tjm2)
Sidalcea robustaBUTTE COUNTY CHECKERBLOOMNative
Sidalcea rostrata
(Under Sidalcea malviflora subsp. rostrata)
Synonym (tjm2)
Sidalcea setosaBRISTLY CHECKERBLOOMNative
Sidalcea setosa var. setosa
(Under Sidalcea oregana subsp. spicata)
Synonym (tjm2)
Sidalcea setosa, in part
(Under Sidalcea oregana subsp. spicata)
Synonym (tjm2)
Sidalcea sparsifoliaSOUTHERN CHECKERBLOOMNative
Sidalcea stipularisSCADDEN FLAT CHECKERBLOOMNative
Sidalcea virgata
(Under Sidalcea glaucescens)
Mentioned in
a note
Sidotheca
  ↳  Key to Sidotheca
STARRY PUNCTUREBRACT
Sidotheca caryophylloidesCHICKWEED OXYTHECANative
Sidotheca emarginataWHITE-MARGINED OXYTHECANative
Sidotheca trilobataTHREE-LOBED STARRY PUNCTUREBRACTNative
Sieglingia decumbens
(Under Danthonia decumbens)
Synonym (tjm2)
Silene
  ↳  Key to Silene
CATCHFLY, CAMPION
Silene antirrhinaSLEEPY CATCHFLYNative
Silene apertaNAKED CATCHFLY, TULARE CAMPIONNative
Silene armeriaSWEET-WILLIAM CATCHFLYNaturalized
Silene bernardinaPALMER'S CATCHFLYNative
Silene bernardina subsp. bernardina
(Under Silene bernardina)
Synonym (tjm2)
Silene bernardina subsp. maguirei
(Under Silene bernardina)
Synonym (tjm2)
Silene bernardina var. rigidula
(Under Silene bernardina)
Synonym (tjm2)
Silene bernardina var. sierrae
(Under Silene bernardina)
Synonym (tjm2)
Silene bolanderiBOLANDER'S CATCHFLYNative
Silene bridgesiiBRIDGES' CATCHFLYNative
Silene californica
(Under Silene laciniata)
Mentioned in
a note
Silene californica
(Under Silene laciniata subsp. californica)
Synonym (tjm2)
Silene campanulataNative
Silene campanulata subsp. campanulataRED MOUNTAIN CATCHFLYNative
Silene campanulata subsp. glandulosaBELL CATCHFLYNative
Silene campanulata subsp. greenei
(Under Silene campanulata subsp. glandulosa)
Synonym (tjm2)
Silene campanulata var. petrophila
(Under Silene campanulata subsp. glandulosa)
Synonym (tjm2)
Silene conifloraMULTINERVED CATCHFLYNaturalized
Silene conoideaLARGE SAND CATCHFLYNaturalized
Silene coronaria
(Under Lychnis coronaria)
Synonym
Silene cucubalus
(Under Silene vulgaris)
Synonym (tjm2)
Silene dichotoma subsp. dichotomaFORKED CATCHFLYNaturalized
Silene douglasii var. douglasiiDOUGLAS' CATCHFLYNative
Silene douglasii var. monantha
(Under Silene douglasii var. douglasii)
Synonym (tjm2)
Silene gallicaSMALL-FLOWER CATCHFLY, WINDMILL PINKNaturalized
Silene grandis
(Under Silene scouleri subsp. scouleri)
Synonym (tjm2)
Silene grayiGRAY'S CATCHFLYNative
Silene hookeriHOOKER'S CATCHFLYNative
Silene hookeri subsp. bolanderi
(Under Silene bolanderi)
Synonym (tjm2)
Silene hookeri subsp. pulverulenta
(Under Silene hookeri)
Synonym (tjm2)
Silene invisaSHORT-PETALED CAMPIONNative
Silene laciniataNative
Silene laciniata subsp. brandegeei
(Under Silene laciniata subsp. laciniata)
Synonym (tjm2)
Silene laciniata subsp. californicaCALIFORNIA PINKNative
Silene laciniata subsp. laciniataMEXICAN PINKNative
Silene laciniata subsp. major
(Under Silene laciniata subsp. laciniata)
Synonym (tjm2)
Silene laciniata var. angustifolia
(Under Silene laciniata subsp. laciniata)
Synonym (tjm2)
Silene laciniata var. latifolia
(Under Silene laciniata subsp. laciniata)
Synonym (tjm2)
Silene latifoliaWHITE CAMPIONNaturalized
Silene latifolia subsp. alba
(Under Silene latifolia)
Synonym (tjm2)
Silene lemmoniiLEMMON'S CATCHFLYNative
Silene marmorensisMARBLE MOUNTAIN CAMPIONNative
Silene menziesiiMENZIES' CATCHFLYNative
Silene montana subsp. bernardina
(Under Silene bernardina)
Synonym (tjm2)
Silene montana subsp. montana
(Under Silene bernardina)
Synonym (tjm2)
Silene montana var. rigidula
(Under Silene bernardina)
Synonym (tjm2)
Silene montana var. sierrae
(Under Silene bernardina)
Synonym (tjm2)
Silene multinervia
(Under Silene coniflora)
Synonym (tjm2)
Silene noctifloraNIGHT-FLOWERING CATCHFLYNaturalized
Silene nudaSTICKY CATCHFLYNative
Silene nuda subsp. insectivora
(Under Silene nuda)
Synonym (tjm2)
Silene occidentalisWESTERN CAMPIONNative
Silene occidentalis subsp. longistipitata
(Under Silene occidentalis)
Synonym (tjm2)
Silene occidentalis subsp. occidentalis
(Under Silene occidentalis)
Synonym (tjm2)
Silene oreganaOREGON CAMPIONNative
Silene parishiiPARISH'S CATCHFLYNative
Silene parishii var. latifolia
(Under Silene parishii)
Synonym (tjm2)
Silene parishii var. viscida
(Under Silene parishii)
Synonym (tjm2)
Silene pendulaDROOPING CATCHFLYWaif
Silene pseudatocionWaif
Silene salmonaceaKLAMATH MOUNTAIN CATCHFLY, SALMON-FLOWERED CATCHFLYNative
Silene sargentiiSARGENT'S CATCHFLYNative
Silene scouleri subsp. grandis
(Under Silene scouleri subsp. scouleri)
Synonym (tjm2)
Silene scouleri subsp. scouleriSCOULER'S CATCHFLYNative
Silene scouleri var. pacifica
(Under Silene scouleri subsp. scouleri)
Synonym (tjm2)
Silene scouleri var. scouleri
(Under Silene scouleri subsp. scouleri)
Synonym (tjm2)
Silene serpentinicolaSERPENTINE CATCHFLYNative
Silene suksdorfiiCASCADE ALPINE CAMPION, SUKSDORF'S CATCHFLYNative
Silene verecundaSAN FRANCISCO CAMPIONNative
Silene verecunda subsp. andersonii
(Under Silene verecunda)
Synonym (tjm2)
Silene verecunda subsp. platyota
(Under Silene verecunda)
Synonym (tjm2)
Silene verecunda subsp. verecunda
(Under Silene verecunda)
Synonym (tjm2)
Silene verecunda var. eglandulosa
(Under Silene verecunda)
Synonym (tjm2)
Silene verecunda var. platyota
(Under Silene verecunda)
Synonym (tjm2)
Silene verecunda var. verecunda
(Under Silene verecunda)
Synonym (tjm2)
Silene vulgarisBLADDER CAMPIONNaturalized
SilybumMILK THISTLE
Silybum marianumNaturalized
Simaroubaceae
  ↳  Key to Simaroubaceae
QUASSIA or SIMAROUBA FAMILY
SimmondsiaGOAT-NUT, JOJOBA
Simmondsia californica
(Under Simmondsia chinensis)
Synonym (tjm2)
Simmondsia chinensisNative
SimmondsiaceaeJOJOBA FAMILY
Sinapis
  ↳  Key to Sinapis
Sinapis albaWHITE MUSTARDNaturalized
Sinapis arvensisCHARLOCKNaturalized
Sisymbrium
  ↳  Key to Sisymbrium
Sisymbrium altissimumTUMBLE MUSTARDNaturalized
Sisymbrium erysimoidesNaturalized
Sisymbrium irioLONDON ROCKETNaturalized
Sisymbrium loeseliiNaturalized
Sisymbrium officinaleHEDGE MUSTARDNaturalized
Sisymbrium orientaleNaturalized
Sisyrinchium
  ↳  Key to Sisyrinchium
Sisyrinchium bellumWESTERN BLUE-EYED-GRASSNative
Sisyrinchium boreale
(Under Sisyrinchium californicum)
Synonym (tjm2)
Sisyrinchium brachypus
(Under Sisyrinchium californicum)
Synonym (tjm2)
Sisyrinchium californicumGOLDEN-EYED-GRASSNative
Sisyrinchium douglasii
(Under Sisyrinchium)
Mentioned in
a note
Sisyrinchium douglasii var. douglasii
(Under Olsynium douglasii var. douglasii)
Synonym (tjm2)
Sisyrinchium eastwoodiae
(Under Sisyrinchium bellum)
Synonym (tjm2)
Sisyrinchium elmeriELMER'S BLUE-EYED-GRASSNative
Sisyrinchium flavidum
(Under Sisyrinchium californicum)
Synonym (tjm2)
Sisyrinchium funereumDEATH VALLEY BLUE-EYED-GRASSNative
Sisyrinchium grandiflorum
(Under Olsynium douglasii var. douglasii)
Synonym (tjm2)
Sisyrinchium greenei
(Under Sisyrinchium bellum)
Synonym (tjm2)
Sisyrinchium halophilumNEVADA BLUE-EYED-GRASSNative
Sisyrinchium hesperium
(Under Sisyrinchium bellum)
Synonym (tjm2)
Sisyrinchium hitchcockiiHITCHCOCK'S BLUE-EYED-GRASSNative
Sisyrinchium idahoenseIDAHO BLUE-EYED-GRASSNative
Sisyrinchium idahoense var. idahoenseNative
Sisyrinchium idahoense var. occidentaleNative
Sisyrinchium leptocaulon
(Under Sisyrinchium halophilum)
Synonym (tjm2)
Sisyrinchium lineatum
(Under Sisyrinchium californicum)
Synonym (tjm2)
Sisyrinchium longipesTIMBERLAND BLUE-EYED-GRASSNative
Sisyrinchium maritimum
(Under Sisyrinchium bellum)
Synonym (tjm2)
Sisyrinchium occidentale
(Under Sisyrinchium idahoense var. occidentale)
Synonym (tjm2)
Sisyrinchium oreophilum
(Under Sisyrinchium idahoense var. idahoense)
Synonym (tjm2)
Sisyrinchium oreophilum var. occidentale
(Under Sisyrinchium idahoense var. occidentale)
Synonym (tjm2)
Sitanion hansenii
(Under Elymus elymoides)
Mentioned in
a note
Sitanion hystrix
(Under Elymus elymoides)
Synonym
Sitanion hystrix var. californicum
(Under Elymus elymoides var. californicus)
Synonym (tjm2)
Sitanion hystrix var. hystrix
(Under Elymus elymoides var. elymoides)
Synonym (tjm2)
Sitanion jubatum
(Under Elymus multisetus)
Synonym (tjm2)
Sitanion longifolium
(Under Elymus elymoides var. brevifolius)
Synonym (tjm2)
Sium
Sium suaveNative
Smelowskia
Smelowskia ovalisNative
Smelowskia ovalis var. congesta
(Under Smelowskia ovalis)
Synonym (tjm2)
SmilacaceaeSMILAX FAMILY
Smilacina racemosa
(Under Maianthemum racemosum)
Synonym (tjm2)
Smilacina racemosa var. amplexicaulis
(Under Maianthemum racemosum)
Synonym (tjm2)
Smilacina racemosa var. glabra
(Under Maianthemum racemosum)
Synonym (tjm2)
Smilacina stellata
(Under Maianthemum stellatum)
Synonym (tjm2)
Smilacina stellata var. sessilifolia
(Under Maianthemum stellatum)
Synonym (tjm2)
Smilax
  ↳  Key to Smilax
GREENBRIER
Smilax californicaNative
Smilax herbacea
(Under Smilax jamesii)
Mentioned in
a note
Smilax jamesiiENGLISH PEAK GREENBRIERNative
Solanaceae
  ↳  Key to Solanaceae
NIGHTSHADE FAMILY
Solanoa purpurescens
(Under Asclepias solanoana)
Synonym (tjm2)
Solanum
  ↳  Key to Solanum
NIGHTSHADE
Solanum americanumNative
Solanum aviculareNaturalized
Solanum carolinenseCAROLINA HORSE-NETTLENaturalized
Solanum clokeyi
(Under Solanum wallacei)
Synonym (tjm2)
Solanum dimidiatumTORREY'S NIGHTSHADEUrban weed
Solanum douglasiiNative
Solanum dulcamaraNaturalized
Solanum elaeagnifoliumWHITE HORSE-NETTLENaturalized
Solanum furcatumNaturalized
Solanum lanceolatumLANCELEAF NIGHTSHADENaturalized
Solanum lycopersicum
(Under Lycopersicon esculentum)
Synonym (tjm2)
Solanum marginatumWHITE-MARGINED NIGHTSHADENaturalized
Solanum mauritianum
(Under Solanum aviculare)
Mentioned in
a note
Solanum nigrumBLACK NIGHTSHADENaturalized
Solanum nodiflorum
(Under Solanum americanum)
Synonym (tjm2)
Solanum parishiiNative
Solanum peruvianum
(Under Lycopersicon peruvianum)
Synonym (tjm2)
Solanum physalifolium var. nitidibaccatumNaturalized
Solanum rostratumBUFFALOBURNaturalized
Solanum sarrachoides
(Under Solanum physalifolium var. nitidibaccatum)
Synonym (tjm2)
Solanum sisymbriifoliumNaturalized
Solanum tenuilobatum
(Under Solanum xanti)
Synonym (tjm2)
Solanum triflorumNaturalized
Solanum tuberosum
(Under Solanum)
Mentioned in
a note
Solanum umbelliferumNative
Solanum umbelliferum var. glabrescens
(Under Solanum umbelliferum)
Synonym (tjm2)
Solanum umbelliferum var. incanum
(Under Solanum umbelliferum)
Synonym (tjm2)
Solanum wallaceiWALLACE'S NIGHTSHADENative
Solanum wallacei var. clokeyi
(Under Solanum wallacei)
Synonym (tjm2)
Solanum xantiNative
Solanum xanti var. hoffmannii
(Under Solanum xanti)
Synonym (tjm2)
Solanum xanti var. intermedium
(Under Solanum xanti)
Synonym (tjm2)
Solanum xanti var. montanum
(Under Solanum xanti)
Synonym (tjm2)
Solanum xanti var. obispoense
(Under Solanum xanti)
Synonym (tjm2)
SoleiroliaBABY'S TEARS
Soleirolia soleiroliiNaturalized
Solidago
  ↳  Key to Solidago
GOLDENROD
Solidago altissima subsp. altissimaLATE GOLDENRODNaturalized
Solidago altissima var. altissima
(Under Solidago altissima subsp. altissima)
Synonym (tjm2)
Solidago californica
(Under Solidago velutina subsp. californica)
Synonym (tjm2)
Solidago canadensis
(Under Solidago elongata)
Mentioned in
a note
Solidago canadensis
(Under Solidago lepida var. salebrosa)
Mentioned in
a note
Solidago canadensis subsp. elongata
(Under Solidago elongata)
Synonym (tjm2)
Solidago canadensis var. elongata
(Under Solidago elongata)
Synonym (tjm2)
Solidago canadensis var. salebrosa
(Under Solidago lepida var. salebrosa)
Synonym (tjm2)
Solidago confinisSOUTHERN GOLDENRODNative
Solidago elongataWEST COAST CANADA GOLDENRODNative
Solidago gigantea
(Under Solidago lepida var. salebrosa)
Synonym (tjm2)
Solidago guiradonisGUIRADO'S GOLDENRODNative
Solidago guiradonis var. spectabilis
(Under Solidago spectabilis)
Synonym (tjm2)
Solidago lepida
(Under Solidago elongata)
Mentioned in
a note
Solidago lepida
(Under Solidago lepida var. salebrosa)
Mentioned in
a note
Solidago lepida var. lepida
(Under Solidago lepida var. salebrosa)
Mentioned in
a note
Solidago lepida var. salebrosaWESTERN GOLDENRODNative
Solidago missouriensis
(Under Solidago spectabilis)
Synonym (tjm2)
Solidago multiradiataNORTHERN GOLDENRODNative
Solidago occidentalis
(Under Euthamia occidentalis)
Synonym (tjm2)
Solidago sparsiflora
(Under Solidago velutina subsp. sparsiflora)
Synonym (tjm2)
Solidago spathulataCOAST GOLDENRODNative
Solidago spectabilisSHOWY GOLDENRODNative
Solidago spectabilis var. confinis
(Under Solidago confinis)
Synonym (tjm2)
Solidago velutinaVELVETY GOLDENRODNative
Solidago velutina subsp. californicaCALIFORNIA GOLDENRODNative
Solidago velutina subsp. sparsifloraNative
Soliva
Soliva daucifolia
(Under Soliva sessilis)
Synonym (tjm2)
Soliva pterosperma
(Under Soliva sessilis)
Synonym (tjm2)
Soliva sessilisNaturalized
Sollya fusiformis
(Under Billardiera heterophylla)
Mentioned in
a note
Sollya heterophylla
(Under Billardiera heterophylla)
Synonym (tjm2)
Sonchus
  ↳  Key to Sonchus
SOW THISTLE
Sonchus arvensisPERENNIAL SOW THISTLENaturalized
Sonchus arvensis subsp. arvensisAgricultural weed
Sonchus arvensis subsp. uliginosusNaturalized
Sonchus asper
(Under Sonchus oleraceus)
Mentioned in
a note
Sonchus asper subsp. asperPRICKLY SOW THISTLENaturalized
Sonchus oleraceusCOMMON SOW THISTLENaturalized
Sonchus tenerrimusNaturalized
Sophia nelsonii
(Under Descurainia nelsonii)
Synonym (tjm2)
Sorbus
  ↳  Key to Sorbus
MOUNTAIN ASH
Sorbus aucupariaEUROPEAN MOUNTAIN ASHWaif
Sorbus californicaCALIFORNIA MOUNTAIN ASHNative
Sorbus cascadensis
(Under Sorbus scopulina)
Synonym (tjm2)
Sorbus occidentalis
(Under Sorbus sitchensis var. grayi)
Synonym (tjm2)
Sorbus scopulinaROCKY MOUNTAIN or CASCADE MOUNTAIN ASHNative
Sorbus scopulina var. cascadensis
(Under Sorbus scopulina)
Synonym (tjm2)
Sorbus sitchensisNative
Sorbus sitchensis var. densa
(Under Sorbus scopulina)
Synonym (tjm2)
Sorbus sitchensis var. grayiDWARF or GRAY'S MOUNTAIN ASHNative
Sorbus sitchensis var. sitchensisSITKA MOUNTAIN ASHNative
Sorghum
  ↳  Key to Sorghum
Sorghum bicolorSORGHUMNaturalized
Sorghum halepenseJOHNSON GRASSNaturalized
Sorghum lanceolatum
(Under Sorghum bicolor)
Synonym (tjm2)
Sorghum sudanense
(Under Sorghum bicolor)
Synonym (tjm2)
Sorghum virgatum
(Under Sorghum bicolor)
Synonym (tjm2)
Sparaxis
  ↳  Key to Sparaxis
SPARAXIS
Sparaxis grandifloraBUTTER CUPWaif
Sparaxis tricolorHARLEQUIN FLOWERWaif
Sparganium
  ↳  Key to Sparganium
BUR-REED
Sparganium angustifoliumNARROW-LEAVED BUR-REEDNative
Sparganium angustifolium subsp. emersum
(Under Sparganium emersum)
Synonym
Sparganium angustifolium var. multipedunculatum
(Under Sparganium angustifolium)
Synonym
Sparganium californicum
(Under Sparganium eurycarpum var. eurycarpum)
Mentioned in
a note
Sparganium chlorocarpum
(Under Sparganium emersum)
Synonym
Sparganium chlorocarpum var. acaule
(Under Sparganium emersum)
Synonym
Sparganium emersumNative
Sparganium emersum subsp. acaule
(Under Sparganium emersum)
Synonym
Sparganium emersum var. multipedunculatum
(Under Sparganium angustifolium)
Synonym
Sparganium erectum
(Under Sparganium eurycarpum)
Mentioned in
a note
Sparganium erectum subsp. stoloniferum
(Under Sparganium eurycarpum var. greenei)
Synonym (tjm2)
Sparganium eurycarpumNative
Sparganium eurycarpum subsp. eurycarpum
(Under Sparganium eurycarpum var. eurycarpum)
Synonym (tjm2)
Sparganium eurycarpum var. eurycarpumNative
Sparganium eurycarpum var. greeneiNative
Sparganium greenei
(Under Sparganium eurycarpum var. greenei)
Synonym
Sparganium minimum
(Under Sparganium natans)
Synonym
Sparganium multipedunculatum
(Under Sparganium angustifolium)
Synonym
Sparganium natansSMALL BUR-REEDNative
Sparganium simplex var. multipedunculatum
(Under Sparganium angustifolium)
Synonym
Spartina
  ↳  Key to Spartina
CORD GRASS
Spartina alternifloraSALT-WATER CORD GRASSNaturalized
Spartina anglica
(Under Spartina)
Mentioned in
a note
Spartina densifloraDENSE-FLOWERED CORD GRASSNaturalized
Spartina foliosaCALIFORNIA CORD GRASSNative
Spartina gracilisALKALI CORD GRASSNative
Spartina patensSALT-MEADOW CORD GRASSNaturalized
Spartium
Spartium junceumSPANISH BROOMNaturalized
SpergulaSPURREY
Spergula arvensisSTICKWORT, STARWORTNaturalized
Spergularia
  ↳  Key to Spergularia
SAND-SPURREY
Spergularia atrospermaBLACK SEED SAND-SPURREYNative
Spergularia bocconei, orth. var.
(Under Spergularia bocconi)
Synonym (tjm2)
Spergularia bocconiBOCCONE'S SAND-SPURREYNaturalized
Spergularia canadensis var. occidentalisWESTERN SAND-SPURREYNative
Spergularia macrothecaSTICKY SAND-SPURREYNative
Spergularia macrotheca var. leucanthaNative
Spergularia macrotheca var. longistylaNative
Spergularia macrotheca var. macrothecaNative
Spergularia marinaSALTMARSH SAND-SPURREYNative
Spergularia marina var. tenuis
(Under Spergularia marina)
Synonym (tjm2)
Spergularia maritima
(Under Spergularia media var. media)
Mentioned in
a note
Spergularia maritima(All.) Chiov.
(Under Spergularia media var. media)
Synonym (tjm2)
Spergularia media
(Under Spergularia media var. media)
Mentioned in
a note
Spergularia media var. mediaGREATER SEA-SPURREYNaturalized
Spergularia platensis var. platensisLA PLATA SAND-SPURREYNaturalized
Spergularia rubraRED SAND-SPURREYNaturalized
Spergularia salina
(Under Spergularia marina)
Synonym (tjm2)
Spergularia villosaHAIRY SAND-SPURREYNaturalized
Spermolepis
Spermolepis echinataBRISTLY SCALESEEDNative
Sphaeralcea
  ↳  Key to Sphaeralcea
GLOBEMALLOW
Sphaeralcea ambiguaNative
Sphaeralcea ambigua subsp. ambigua
(Under Sphaeralcea ambigua var. ambigua)
Synonym (tjm2)
Sphaeralcea ambigua subsp. monticola
(Under Sphaeralcea ambigua var. ambigua)
Synonym (tjm2)
Sphaeralcea ambigua subsp. rosacea
(Under Sphaeralcea ambigua var. rosacea)
Synonym (tjm2)
Sphaeralcea ambigua subsp. rugosa
(Under Sphaeralcea ambigua var. rugosa)
Synonym (tjm2)
Sphaeralcea ambigua var. aculeata
(Under Sphaeralcea ambigua var. ambigua)
Synonym (tjm2)
Sphaeralcea ambigua var. ambiguaAPRICOT MALLOWNative
Sphaeralcea ambigua var. monticola
(Under Sphaeralcea ambigua var. ambigua)
Synonym (tjm2)
Sphaeralcea ambigua var. rosaceaPARISH MALLOWNative
Sphaeralcea ambigua var. rugosaROUGHLEAF APRICOT MALLOWNative
Sphaeralcea angustifoliaNARROW-LEAVED GLOBEMALLOWNative
Sphaeralcea angustifolia var. cuspidata
(Under Sphaeralcea angustifolia)
Synonym (tjm2)
Sphaeralcea angustifolia var. oblongifolia
(Under Sphaeralcea angustifolia)
Synonym (tjm2)
Sphaeralcea coulteriCOULTER'S GLOBEMALLOWNative
Sphaeralcea emoryi
(Under Sphaeralcea angustifolia)
Mentioned in
a note
Sphaeralcea emoryi var. arida
(Under Sphaeralcea emoryi var. emoryi)
Synonym (tjm2)
Sphaeralcea emoryi var. emoryiEMORY'S GLOBEMALLOWNative
Sphaeralcea emoryi var. nevadensis
(Under Sphaeralcea angustifolia)
Synonym (tjm2)
Sphaeralcea emoryi var. variabilis
(Under Sphaeralcea emoryi var. emoryi)
Synonym (tjm2)
Sphaeralcea grossulariifoliaGOOSEBERRY-LEAVED GLOBEMALLOWNative
Sphaeralcea grossulariifolia var. fumariensis
(Under Sphaeralcea grossulariifolia)
Mentioned in
a note
Sphaeralcea grossulariifolia var. grossulariifolia
(Under Sphaeralcea grossulariifolia)
Synonym
Sphaeralcea grossulariifolia var. grossulariifolia
(Under Sphaeralcea grossulariifolia)
Mentioned in
a note
Sphaeralcea munroanaMUNRO'S DESERT-MALLOWNative
Sphaeralcea orcuttiiCARRIZO MALLOWNative
Sphaeralcea rusbyi subsp. eremicola
(Under Sphaeralcea rusbyi var. eremicola)
Synonym (tjm2)
Sphaeralcea rusbyi var. eremicolaRUSBY'S DESERT-MALLOWNative
Sphaeromeria
  ↳  Key to Sphaeromeria
Sphaeromeria canaGRAY CHICKENSAGENative
Sphaeromeria potentilloidesFIVEFINGER CHICKENSAGENative
Sphaeromeria potentilloides var. nitrophilaALKALI TANSY-SAGENative
Sphaeromeria potentilloides var. potentilloidesNative
Sphaerophysa
Sphaerophysa salsulaAUSTRIAN PEAWEEDExtirpated alien
SphaeropterisAUSTRALIAN TREE FERN
Sphaeropteris cooperiCOOPER'S TREE FERNNaturalized
SphenopholisWEDGE GRASS
Sphenopholis obtusataPRAIRIE WEDGE GRASSNative
Sphenosciadium
Sphenosciadium capitellatumSWAMP WHITE HEADS, RANGER'S BUTTONSNative
Spinacia oleracea
(Under Chenopodiaceae)
Mentioned in
a note
Spiraea
  ↳  Key to Spiraea
Spiraea densiflora
(Under Spiraea splendens)
Synonym (tjm2)
Spiraea densiflora subsp. splendens
(Under Spiraea splendens)
Synonym (tjm2)
Spiraea douglasiiNative
Spiraea helleri
(Under Spiraea splendens)
Synonym (tjm2)
Spiraea splendensNative
Spiraea splendens var. splendens
(Under Spiraea splendens)
Synonym (tjm2)
Spiranthes
  ↳  Key to Spiranthes
LADIES TRESSES
Spiranthes porrifoliaNative
Spiranthes romanzoffianaNative
Spiranthes stellata
(Under Spiranthes)
Mentioned in
a note
SpirodelaDUCKMEAT
Spirodela oligorrhiza
(Under Landoltia punctata)
Synonym (tjm2)
Spirodela polyrhizaNative
Spirodela punctata
(Under Landoltia punctata)
Synonym (tjm2)
Sporobolus
  ↳  Key to Sporobolus
DROPSEED, SACATON
Sporobolus airoidesALKALI SACATONNative
Sporobolus airoides var. wrightii
(Under Sporobolus wrightii)
Synonym (tjm2)
Sporobolus contractusSPIKE DROPSEEDNative
Sporobolus creber
(Under Sporobolus indicus)
Mentioned in
a note
Sporobolus creber
(Under Sporobolus indicus)
Synonym (tjm2)
Sporobolus cryptandrusSAND DROPSEEDNative
Sporobolus cryptandrus var. strictus
(Under Sporobolus contractus)
Synonym (tjm2)
Sporobolus flexuosusMESA DROPSEEDNative
Sporobolus floridanus
(Under Sporobolus flexuosus)
Mentioned in
a note
Sporobolus indicusSMUT GRASSNaturalized
Sporobolus indicus var. creber
(Under Sporobolus indicus)
Synonym (tjm2)
Sporobolus nealleyi
(Under Sporobolus cryptandrus)
Mentioned in
a note
Sporobolus neglectus
(Under Sporobolus vaginiflorus)
Mentioned in
a note
Sporobolus poiretii
(Under Sporobolus indicus)
Synonym (tjm2)
Sporobolus vaginiflorusPOVERTY DROPSEEDNaturalized
Sporobolus wrightiiBIG SACATONNative
Stachys
  ↳  Key to Stachys
HEDGE-NETTLE
Stachys ajugoidesNative
Stachys ajugoides var. cymosa
(Under Stachys pycnantha)
Synonym
Stachys ajugoides var. quercetorum
(Under Stachys rigida var. quercetorum)
Synonym (tjm2)
Stachys ajugoides var. rigida
(Under Stachys bergii)
Synonym (tjm2)
Stachys ajugoides var. rigida
(Under Stachys mexicana)
Synonym (tjm2)
Stachys ajugoides var. rigida
(Under Stachys rigida var. quercetorum)
Synonym (tjm2)
Stachys ajugoides var. rigida
(Under Stachys rigida var. rigida)
Synonym (tjm2)
Stachys ajugoides var. stricta
(Under Stachys stricta)
Synonym
Stachys albensNative
Stachys albens var. juliensis
(Under Stachys albens)
Synonym
Stachys arvensis
(Under Stachys)
Mentioned in
a note
Stachys bergiiNative
Stachys bullataNative
Stachys californica
(Under Stachys bullata)
Synonym
Stachys chamissonisNative
Stachys chamissonis var. cooleyae
(Under Stachys chamissonis)
Mentioned in
a note
Stachys cooleyae
(Under Stachys chamissonis)
Mentioned in
a note
Stachys flaccida
(Under Stachys chamissonis)
Synonym
Stachys floridana
(Under Stachys)
Mentioned in
a note
Stachys gracilenta
(Under Stachys rigida var. quercetorum)
Synonym (tjm2)
Stachys lanuginosa
(Under Stachys albens)
Synonym
Stachys malacophylla
(Under Stachys albens)
Synonym
Stachys mexicanaNative
Stachys palustris subsp. pilosa
(Under Stachys pilosa)
Synonym (tjm2)
Stachys pilosaPRAIRIE WOUNDWORTNative
Stachys pycnanthaSHORT-SPIKED HEDGE NETTLENative
Stachys quercetorum
(Under Stachys rigida var. quercetorum)
Synonym (tjm2)
Stachys ramosa
(Under Stachys ajugoides)
Synonym
Stachys rigidaNative
Stachys rigida subsp. lanata
(Under Stachys bergii)
Synonym (tjm2)
Stachys rigida subsp. quercetorum
(Under Stachys rigida var. quercetorum)
Synonym (tjm2)
Stachys rigida subsp. rivularis
(Under Stachys rigida var. rigida)
Synonym (tjm2)
Stachys rigida var. quercetorumNative
Stachys rigida var. rigidaNative
Stachys stebbinsiiNative
Stachys strictaNative
Stachys velutina
(Under Stachys albens)
Synonym
Stachys veronicifolia
(Under Stachys rigida var. rigida)
Synonym (tjm2)
Stachys viarum
(Under Stachys rigida var. quercetorum)
Synonym (tjm2)
Stanleya
  ↳  Key to Stanleya
PRINCE'S PLUME
Stanleya elataNative
Stanleya pinnata subsp. inyoensis
(Under Stanleya pinnata var. pinnata)
Synonym (tjm2)
Stanleya pinnata var. integrifolia
(Under Stanleya pinnata var. pinnata)
Mentioned in
a note
Stanleya pinnata var. inyoensis
(Under Stanleya pinnata var. pinnata)
Synonym (tjm2)
Stanleya pinnata var. pinnataNative
Stanleya pinnata var. texana
(Under Stanleya pinnata var. pinnata)
Mentioned in
a note
Stanleya viridifloraGREEN-FLOWERED PRINCE'S PLUMENative
StaphyleaBLADDERNUT
Staphylea bolanderiSIERRA BLADDERNUTNative
StaphyleaceaeBLADDERNUT FAMILY
Statice perezii
(Under Limonium perezii)
Synonym
Stebbinsoseris
  ↳  Key to Stebbinsoseris
Stebbinsoseris decipiensSANTA CRUZ MICROSERISNative
Stebbinsoseris heterocarpaGRASSLAND SILVERPUFFSNative
Stellaria
  ↳  Key to Stellaria
CHICKWEED, STARWORT
Stellaria borealis subsp. borealis
(Under Stellaria borealis subsp. sitchana)
Mentioned in
a note
Stellaria borealis subsp. sitchanaSITKA STARWORTNative
Stellaria borealis var. bongardiana
(Under Stellaria borealis subsp. sitchana)
Synonym (tjm2)
Stellaria calycanthaNORTHERN STARWORTNative
Stellaria calycantha subsp. interior
(Under Stellaria calycantha)
Synonym (tjm2)
Stellaria calycantha var. bongardiana
(Under Stellaria borealis subsp. sitchana)
Synonym (tjm2)
Stellaria calycantha var. simcoei
(Under Stellaria calycantha)
Synonym (tjm2)
Stellaria calycantha var. sitchana
(Under Stellaria borealis subsp. sitchana)
Synonym (tjm2)
Stellaria crispaCRISP STARWORTNative
Stellaria dichotoma
(Under Stellaria littoralis)
Mentioned in
a note
Stellaria gramineaCOMMON STARWORTNaturalized
Stellaria jamesiana
(Under Pseudostellaria jamesiana)
Synonym (tjm2)
Stellaria lagunensis
(Under Arenaria lanuginosa var. saxosa)
Synonym (tjm2)
Stellaria littoralisBEACH STARWORTNative
Stellaria longifoliaLONG-LEAVED STARWORTNative
Stellaria longipes subsp. longipesGOLDIE'S STARWORTNative
Stellaria longipes var. laeta
(Under Stellaria longipes subsp. longipes)
Synonym (tjm2)
Stellaria longipes var. longipes
(Under Stellaria longipes subsp. longipes)
Synonym (tjm2)
Stellaria mediaCOMMON CHICKWEEDNaturalized
Stellaria media subsp. neglecta
(Under Stellaria neglecta)
Synonym (tjm2)
Stellaria media subsp. pallida
(Under Stellaria pallida)
Synonym (tjm2)
Stellaria neglectaGREATER CHICKWEEDNaturalized
Stellaria nitensSHINING CHICKWEEDNative
Stellaria obtusaOBTUSE STARWORT, ROCKY MOUNTAIN STARWORTNative
Stellaria pallidaLESSER CHICKWEEDNaturalized
Stellaria sitchana var. bongardiana
(Under Stellaria borealis subsp. sitchana)
Synonym (tjm2)
Stellaria umbellataUMBELLATE STARWORTNative
Stemodia
Stemodia durantifoliaPURPLE STEMODIANative
Stemodia durantifolia var. chilensis
(Under Stemodia durantifolia)
Mentioned in
a note
Stenanthium
Stenanthium occidentaleNative
Stenophyllus capillaris
(Under Bulbostylis capillaris)
Synonym (tjm2)
Stenotaphrum
Stenotaphrum secundatumSAINT AUGUSTINE GRASSNaturalized
Stenotus
  ↳  Key to Stenotus
Stenotus acaulisSTEMLESS GOLDENWEEDNative
Stenotus lanuginosus var. lanuginosusWOOLLY STENOTUSNative
Stenotus stenophyllus
(Under Nestotus stenophyllus)
Synonym (tjm2)
Stenotus stenophyllus
(Under Stenotus)
Mentioned in
a note
Stephanomeria
  ↳  Key to Stephanomeria
Stephanomeria blairii
(Under Munzothamnus blairii)
Synonym (tjm2)
Stephanomeria blairii
(Under Stephanomeria)
Mentioned in
a note
Stephanomeria cichoriaceaSILVER ROCK-LETTUCE, CHICORYLEAF WIRE-LETTUCENative
Stephanomeria diegensisNative
Stephanomeria elataNative
Stephanomeria exiguaNative
Stephanomeria exigua subsp. carotiferaNative
Stephanomeria exigua subsp. coronariaNative
Stephanomeria exigua subsp. deaneiNative
Stephanomeria exigua subsp. exiguaNative
Stephanomeria exigua subsp. macrocarpaNative
Stephanomeria lactucinaNative
Stephanomeria minor
(Under Stephanomeria tenuifolia)
Synonym
Stephanomeria minor var. minor
(Under Stephanomeria tenuifolia)
Synonym
Stephanomeria minor var. myrioclada
(Under Stephanomeria tenuifolia)
Synonym
Stephanomeria paniculataNative
Stephanomeria parryiNative
Stephanomeria paucifloraWIRE-LETTUCENative
Stephanomeria pauciflora var. parishii
(Under Stephanomeria pauciflora)
Synonym (tjm2)
Stephanomeria pauciflora var. pauciflora
(Under Stephanomeria pauciflora)
Synonym (tjm2)
Stephanomeria runcinata var. parishii
(Under Stephanomeria pauciflora)
Synonym (tjm2)
Stephanomeria spinosa
(Under Pleiacanthus spinosus)
Synonym (tjm2)
Stephanomeria spinosa
(Under Stephanomeria)
Mentioned in
a note
Stephanomeria tenuifoliaNARROW-LEAVED WIRE-LETTUCENative
Stephanomeria tenuifolia var. myrioclada
(Under Stephanomeria tenuifolia)
Synonym
Stephanomeria tomentosa
(Under Stephanomeria virgata subsp. virgata)
Synonym
Stephanomeria virgataNative
Stephanomeria virgata subsp. pleurocarpaNative
Stephanomeria virgata subsp. virgataNative
Stillingia
  ↳  Key to Stillingia
Stillingia linearifoliaNative
Stillingia paucidentataNative
Stillingia spinulosaNative
Stipa
  ↳  Key to Stipa
NEEDLE GRASS
Stipa aridaMORMON NEEDLE GRASSNative
Stipa brachychaetaPUNA NEEDLE GRASSNaturalized
Stipa capensisCAPE RICE GRASSNaturalized
Stipa caudata
(Under Stipa)
Mentioned in
a note
Stipa cernuaNODDING NEEDLE GRASSNative
Stipa chaetophoraSTIPOID RICE GRASSNaturalized
Stipa clandestina
(Under Stipa)
Mentioned in
a note
Stipa columbiana
(Under Stipa nelsonii var. dorei)
Synonym (tjm2)
Stipa comataNEEDLE-AND-THREADNative
Stipa comata var. comataNative
Stipa comata var. intermediaNative
Stipa coronataCRESTED NEEDLE GRASSNative
Stipa diegoensisSAN DIEGO NEEDLE GRASSNative
Stipa divaricataSMALL-FLOWERED RICE GRASSNative
Stipa exiguaLITTLE RICE GRASSNative
Stipa formicarum
(Under Stipa manicata)
Mentioned in
a note
Stipa formicarum
(Under Stipa manicata)
Synonym (tjm2)
Stipa hymenoidesSAND RICE GRASSNative
Stipa kingiiKING'S RICE GRASSNative
Stipa latiglumisWIDE-GLUMED NEEDLE GRASSNative
Stipa lemmoniiLEMMON'S NEEDLE GRASSNative
Stipa lemmonii var. lemmoniiNative
Stipa lemmonii var. pubescensNative
Stipa lepidaFOOTHILL NEEDLE GRASSNative
Stipa lettermaniiLETTERMAN'S NEEDLE GRASSNative
Stipa manicataANDEAN TUSSOCK GRASSNaturalized
Stipa mauritanicaMAURITANIAN GRASSNaturalized
Stipa miliacea var. miliaceaSMILO GRASSNaturalized
Stipa nelsonii var. doreiMOUNTAIN NEEDLE GRASSNative
Stipa nevadensisNEVADA NEEDLE GRASSNative
Stipa occidentalisNative
Stipa occidentalis var. californicaCALIFORNIA NEEDLE GRASSNative
Stipa occidentalis var. occidentalisWESTERN NEEDLE GRASSNative
Stipa occidentalis var. pubescensCOMMON WESTERN NEEDLE GRASSNative
Stipa parishii var. parishiiNative
Stipa pinetorumPINEWOODS NEEDLE GRASSNative
Stipa plumosa
(Under Stipa)
Mentioned in
a note
Stipa pulchraPURPLE NEEDLE GRASSNative
Stipa purpurataBRISTLY NEEDLE GRASSNaturalized
Stipa speciosaDESERT NEEDLE GRASSNative
Stipa stillmaniiSTILLMAN'S NEEDLE GRASSNative
Stipa tenacissima
(Under Stipa)
Mentioned in
a note
Stipa tenuissima
(Under Stipa)
Mentioned in
a note
Stipa thurberianaTHURBER'S NEEDLE GRASSNative
Stipa viridula
(Under Stipa)
Mentioned in
a note
Stipa webberiWEBBER'S NEEDLE GRASSNative
Streptanthella
Streptanthella longirostrisNative
Streptanthella longirostris var. derelicta
(Under Streptanthella longirostris)
Synonym
Streptanthus
  ↳  Key to Streptanthus
JEWELFLOWER
Streptanthus albidus subsp. albidus
(Under Streptanthus glandulosus subsp. albidus)
Synonym (tjm2)
Streptanthus albidus subsp. peramoenus
(Under Streptanthus glandulosus subsp. glandulosus)
Synonym (tjm2)
Streptanthus anceps
(Under Caulanthus anceps)
Synonym (tjm2)
Streptanthus barbatusNative
Streptanthus barbigerBEARDED JEWELFLOWERNative
Streptanthus batrachopusTAMALPAIS JEWELFLOWERNative
Streptanthus bernardinusLAGUNA MOUNTAINS JEWELFLOWERNative
Streptanthus brachiatusNative
Streptanthus brachiatus subsp. brachiatus
(Under Streptanthus brachiatus)
Synonym (tjm2)
Streptanthus brachiatus subsp. hoffmanii
(Under Streptanthus brachiatus)
Synonym (tjm2)
Streptanthus breweriNative
Streptanthus breweri var. breweri
(Under Streptanthus breweri)
Synonym (tjm2)
Streptanthus breweri var. hesperidis
(Under Streptanthus hesperidis)
Synonym (tjm2)
Streptanthus callistusMOUNT HAMILTON JEWELFLOWERNative
Streptanthus campestrisSOUTHERN JEWELFLOWERNative
Streptanthus cordatusNative
Streptanthus cordatus var. cordatusNative
Streptanthus cordatus var. duranii
(Under Streptanthus cordatus var. cordatus)
Synonym (tjm2)
Streptanthus cordatus var. exiguus
(Under Streptanthus oliganthus)
Synonym (tjm2)
Streptanthus cordatus var. piutensisPIUTE MOUNTAINS JEWELFLOWERNative
Streptanthus coulteri var. lemmonii
(Under Caulanthus lemmonii)
Synonym (tjm2)
Streptanthus diversifoliusVARIED-LEAVED JEWELFLOWERNative
Streptanthus drepanoidesSICKLE-FRUIT JEWELFLOWERNative
Streptanthus farnsworthianusFARNSWORTH'S JEWELFLOWERNative
Streptanthus fenestratusTEHIPITE VALLEY JEWELFLOWERNative
Streptanthus flavescens
(Under Caulanthus flavescens)
Synonym (tjm2)
Streptanthus glandulosusNative
Streptanthus glandulosus subsp. albidusMETCALF CANYON JEWELFLOWERNative
Streptanthus glandulosus subsp. arkii
(Under Streptanthus glandulosus subsp. glandulosus)
Synonym (tjm2)
Streptanthus glandulosus subsp. glandulosusNative
Streptanthus glandulosus subsp. hoffmaniiHOFFMAN'S BRISTLY JEWELFLOWERNative
Streptanthus glandulosus subsp. josephinensis
(Under Streptanthus glandulosus)
Mentioned in
a note
Streptanthus glandulosus subsp. nigerTIBURON JEWELFLOWERNative
Streptanthus glandulosus subsp. pulchellusMOUNT TAMALPAIS BRISTLY JEWELFLOWERNative
Streptanthus glandulosus subsp. raichei
(Under Streptanthus glandulosus subsp. glandulosus)
Synonym (tjm2)
Streptanthus glandulosus subsp. secundusNative
Streptanthus glandulosus subsp. sonomensisUNCOMMON JEWELFLOWERNative
Streptanthus glandulosus var. albidus
(Under Streptanthus glandulosus subsp. albidus)
Synonym (tjm2)
Streptanthus glandulosus var. hoffmanii
(Under Streptanthus glandulosus subsp. hoffmanii)
Synonym
Streptanthus glandulosus var. niger
(Under Streptanthus glandulosus subsp. niger)
Synonym (tjm2)
Streptanthus glandulosus var. pulchellus
(Under Streptanthus glandulosus subsp. pulchellus)
Synonym (tjm2)
Streptanthus glandulosus var. sonomensis
(Under Streptanthus glandulosus subsp. sonomensis)
Synonym
Streptanthus glaucus
(Under Caulanthus glaucus)
Synonym (tjm2)
Streptanthus gracilisALPINE JEWELFLOWERNative
Streptanthus hallii
(Under Caulanthus hallii)
Synonym
Streptanthus hesperidisNative
Streptanthus heterophyllus
(Under Caulanthus heterophyllus)
Synonym (tjm2)
Streptanthus hispidusMOUNT DIABLO JEWELFLOWERNative
Streptanthus howelliiHOWELL'S JEWELFLOWERNative
Streptanthus inflatus
(Under Caulanthus inflatus)
Synonym
Streptanthus insignisSAN BENITO JEWELFLOWERNative
Streptanthus insignis subsp. insignisNative
Streptanthus insignis subsp. lyoniiARBURUA RANCH JEWELFLOWERNative
Streptanthus longisiliquusLONG-FRUIT JEWELFLOWERNative
Streptanthus major
(Under Caulanthus major)
Synonym (tjm2)
Streptanthus morrisoniiNative
Streptanthus morrisonii subsp. elatus
(Under Streptanthus morrisonii)
Synonym (tjm2)
Streptanthus morrisonii subsp. hirtiflorus
(Under Streptanthus morrisonii)
Synonym (tjm2)
Streptanthus morrisonii subsp. morrisonii
(Under Streptanthus morrisonii)
Synonym (tjm2)
Streptanthus niger
(Under Streptanthus glandulosus subsp. niger)
Synonym (tjm2)
Streptanthus oblanceolatusTRINITY RIVER JEWELFLOWERNative
Streptanthus oliganthusMASONIC MOUNTAIN JEWELFLOWERNative
Streptanthus pilosus
(Under Caulanthus pilosus)
Synonym
Streptanthus polygaloidesMILKWORT JEWELFLOWERNative
Streptanthus simulans
(Under Caulanthus simulans)
Synonym
Streptanthus tortuosusMOUNTAIN JEWELFLOWERNative
Streptanthus tortuosus var. flavescens
(Under Streptanthus tortuosus)
Synonym (tjm2)
Streptanthus tortuosus var. foliosus
(Under Streptanthus tortuosus)
Synonym (tjm2)
Streptanthus tortuosus var. oblongus
(Under Streptanthus tortuosus)
Synonym (tjm2)
Streptanthus tortuosus var. optatus
(Under Streptanthus tortuosus)
Synonym (tjm2)
Streptanthus tortuosus var. orbiculatus
(Under Streptanthus tortuosus)
Synonym (tjm2)
Streptanthus tortuosus var. pallidus
(Under Streptanthus tortuosus)
Synonym (tjm2)
Streptanthus tortuosus var. suffrutescens
(Under Streptanthus tortuosus)
Synonym (tjm2)
Streptanthus tortuosus var. tortuosus
(Under Streptanthus tortuosus)
Synonym (tjm2)
Streptanthus vernalisEARLY JEWELFLOWERNative
Streptanthus vimineusNative
Streptopus
Streptopus amplexifolius var. americanusNative
Streptopus amplexifolius var. denticulatus
(Under Streptopus amplexifolius var. americanus)
Synonym (tjm2)
Strigosella
Strigosella africanaNaturalized
Stropholirion californicum
(Under Dichelostemma volubile)
Synonym (tjm2)
Struthiopteris
Struthiopteris spicantDEER FERNNative
Stuckenia
  ↳  Key to Stuckenia
PONDWEED
Stuckenia filiformis subsp. alpinaSLENDER-LEAVED PONDWEEDNative
Stuckenia filiformis subsp. filiformis
(Under Stuckenia filiformis subsp. alpina)
Mentioned in
a note
Stuckenia pectinataFENNEL-LEAF PONDWEEDNative
Stuckenia striataNEVADA PONDWEEDNative
Stutzia
Stutzia covilleiCOVILLE'S ORACHNative
Stylocline
  ↳  Key to Stylocline
NESTSTRAW
Stylocline amphibola
(Under Micropus amphibolus)
Synonym (tjm2)
Stylocline citroleumOIL NESTSTRAWNative
Stylocline filaginea
(Under Ancistrocarphus filagineus)
Synonym (tjm2)
Stylocline filaginea var. depressa
(Under Ancistrocarphus filagineus)
Synonym (tjm2)
Stylocline gnaphalioides, orth. var.
(Under Stylocline gnaphaloides)
Synonym (tjm2)
Stylocline gnaphaloidesEVERLASTING NESTSTRAWNative
Stylocline intertextaMOJAVE NESTSTRAWNative
Stylocline masoniiMASON'S NESTSTRAWNative
Stylocline micropoidesDESERT NESTSTRAW, WOOLLYHEAD FANBRACTNative
Stylocline psilocarphoidesPECK NESTSTRAWNative
Stylocline sonorensisMESQUITE NESTSTRAWNative
Stylomecon heterophylla
(Under Papaver heterophyllum)
Synonym (tjm2)
StyracaceaeSTORAX FAMILY
StyraxSNOWDROP BUSH
Styrax officinalis var. californicus
(Under Styrax redivivus)
Synonym (tjm2)
Styrax officinalis var. fulvescens
(Under Styrax redivivus)
Synonym (tjm2)
Styrax officinalis var. redivivus
(Under Styrax redivivus)
Synonym (tjm2)
Styrax redivivusNative
Suaeda
  ↳  Key to Suaeda
SEABLITE, SEEPWEED
Suaeda calceoliformisHORNED SEABLITENative
Suaeda californicaCALIFORNIA SEABLITENative
Suaeda californica var. pubescens
(Under Suaeda taxifolia)
Synonym (tjm2)
Suaeda californica var. taxifolia
(Under Suaeda taxifolia)
Synonym (tjm2)
Suaeda depressa var. depressa
(Under Suaeda calceoliformis)
Synonym
Suaeda depressa var. erecta
(Under Suaeda calceoliformis)
Synonym
Suaeda esteroaESTUARY SEABLITENative
Suaeda fruticosa
(Under Suaeda nigra)
Synonym
Suaeda moquinii
(Under Suaeda nigra)
Synonym (tjm2)
Suaeda nigraBUSH SEEPWEEDNative
Suaeda occidentalisWESTERN SEABLITENative
Suaeda taxifoliaWOOLLY SEABLITENative
Suaeda torreyana var. ramosissima
(Under Suaeda nigra)
Synonym
Suaeda torreyana var. torreyana
(Under Suaeda nigra)
Synonym
SubulariaAWLWORT
Subularia aquatica subsp. americanaWATER AWLWORTNative
Subularia aquatica var. americana
(Under Subularia aquatica subsp. americana)
Synonym (tjm2)
Suksdorfia ranunculifolia
(Under Saxifragaceae)
Mentioned in
a note
Suksdorfia ranunculifolia
(Under Hemieva ranunculifolia)
Synonym (tjm2)
Swallenia
Swallenia alexandraeEUREKA VALLEY DUNE GRASSNative
Swertia
Swertia albicaulis
(Under Frasera albicaulis)
Synonym (tjm2)
Swertia albicaulis var. albicaulis
(Under Frasera albicaulis var. modocensis)
Synonym (tjm2)
Swertia albicaulis var. nitida
(Under Frasera albicaulis var. nitida)
Synonym (tjm2)
Swertia albomarginata
(Under Frasera albomarginata)
Synonym (tjm2)
Swertia covillei
(Under Swertia perennis)
Synonym (tjm2)
Swertia fastigiata
(Under Frasera umpquaensis)
Mentioned in
a note
Swertia lassenica
(Under Frasera albicaulis var. nitida)
Synonym (tjm2)
Swertia modocensis
(Under Frasera albicaulis var. modocensis)
Synonym (tjm2)
Swertia neglecta
(Under Frasera neglecta)
Synonym (tjm2)
Swertia parryi
(Under Frasera parryi)
Synonym (tjm2)
Swertia perennisSTAR SWERTIANative
Swertia puberulenta
(Under Frasera puberulenta)
Synonym (tjm2)
Swertia radiata
(Under Frasera speciosa)
Synonym (tjm2)
Swertia radiata var. radiata
(Under Frasera speciosa)
Synonym (tjm2)
Swertia shastaensis
(Under Frasera albicaulis var. modocensis)
Synonym (tjm2)
Swertia tubulosa
(Under Frasera tubulosa)
Synonym (tjm2)
Swertia umpquaensis
(Under Frasera umpquaensis)
Synonym (tjm2)
Syagrus
Syagrus romanzoffianaQUEEN PALMWaif
Sympetaleia rupestris
(Under Eucnide rupestris)
Synonym (tjm2)
Symphoricarpos
  ↳  Key to Symphoricarpos
WAXBERRY, SNOWBERRY
Symphoricarpos acutus
(Under Symphoricarpos mollis)
Synonym (tjm2)
Symphoricarpos albus var. laevigatusSNOWBERRYNative
Symphoricarpos hesperius
(Under Symphoricarpos mollis)
Synonym (tjm2)
Symphoricarpos longiflorusFRAGRANT SNOWBERRYNative
Symphoricarpos mollisCREEPING SNOWBERRY, TRIP VINENative
Symphoricarpos parishii
(Under Symphoricarpos rotundifolius var. parishii)
Synonym (tjm2)
Symphoricarpos rivularis
(Under Symphoricarpos albus var. laevigatus)
Synonym (tjm2)
Symphoricarpos rotundifoliusNative
Symphoricarpos rotundifolius var. parishiiNative
Symphoricarpos rotundifolius var. rotundifoliusNative
Symphyotrichum
  ↳  Key to Symphyotrichum
AMERICAN-ASTER
Symphyotrichum ascendensNative
Symphyotrichum bracteolatumNative
Symphyotrichum campestreNative
Symphyotrichum campestre var. bloomeri
(Under Symphyotrichum campestre)
Synonym (tjm2)
Symphyotrichum campestre var. campestre
(Under Symphyotrichum campestre)
Synonym (tjm2)
Symphyotrichum chilenseNative
Symphyotrichum chilense var. chilense
(Under Symphyotrichum chilense)
Synonym (tjm2)
Symphyotrichum chilense var. invenustum
(Under Symphyotrichum chilense)
Synonym (tjm2)
Symphyotrichum chilense var. medium
(Under Symphyotrichum chilense)
Synonym (tjm2)
Symphyotrichum defoliatumSAN BERNARDINO ASTERNative
Symphyotrichum eatonii
(Under Symphyotrichum bracteolatum)
Synonym (tjm2)
Symphyotrichum expansum
(Under Symphyotrichum subulatum var. parviflorum)
Synonym (tjm2)
Symphyotrichum foliaceumNative
Symphyotrichum foliaceum var. apricumNative
Symphyotrichum foliaceum var. parryiNative
Symphyotrichum frondosumNative
Symphyotrichum greataeGREATA'S ASTERNative
Symphyotrichum hallii
(Under Symphyotrichum bracteolatum)
Mentioned in
a note
Symphyotrichum hendersoniiHENDERSON'S ASTERNative
Symphyotrichum laeve var. geyeri
(Under Symphyotrichum)
Mentioned in
a note
Symphyotrichum lanceolatum subsp. hesperium
(Under Symphyotrichum lanceolatum var. hesperium)
Synonym (tjm2)
Symphyotrichum lanceolatum var. hesperiumNative
Symphyotrichum lentumSUISUN MARSH ASTERNative
Symphyotrichum spathulatumNative
Symphyotrichum spathulatum var. intermediumNative
Symphyotrichum spathulatum var. spathulatumNative
Symphyotrichum spathulatum var. yosemitanumWESTERN BOG ASTERNative
Symphyotrichum subspicatumDOUGLAS ASTERNative
Symphyotrichum subulatumANNUAL SALTMARSH ASTERNative
Symphyotrichum subulatum var. elongatumNaturalized
Symphyotrichum subulatum var. parviflorumNative
Symphyotrichum subulatum var. squamatumNaturalized
Symphytotrichum subulatum var. ligulatum
(Under Symphyotrichum subulatum)
Mentioned in
a note
Symphytum
  ↳  Key to Symphytum
COMFREY
Symphytum ×uplandicumRUSSIAN COMFREYNaturalized
Symphytum asperum
(Under Symphytum)
Synonym (tjm2)
Symphytum officinaleCOMFREYWaif
Synthyris
  ↳  Key to Synthyris
Synthyris cordataSERPENTINE SNOW QUEENNative
Synthyris major
(Under Synthyris missurica subsp. missurica)
Synonym (tjm2)
Synthyris missurica subsp. missuricaKITTENTAILNative
Synthyris reniformisSNOW QUEENNative
Synthyris reniformis var. cordata
(Under Synthyris cordata)
Synonym (tjm2)
Synthyris reniformis var. reniformis
(Under Synthyris reniformis)
Synonym (tjm2)
Synthyris stellata
(Under Synthyris missurica subsp. missurica)
Synonym (tjm2)
Syntrichopappus
  ↳  Key to Syntrichopappus
Syntrichopappus fremontiiNative
Syntrichopappus lemmoniiLEMMON'S SYNTRICHOPAPPUSNative
Systenotheca
Systenotheca vortriedeiVORTRIEDE'S SPINEFLOWERNative
Syzygium
Syzygium aromaticum
(Under Myrtaceae)
Mentioned in
a note
Syzygium australeSCRUB CHERRYWaif