Callahan County

Showing 251–300 of 318.

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  Quercus sinuata Walter Native QUSI

  bastard oak · Fagaceae
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  Quercus sinuata Walter var. breviloba (Torr.) C.H. Mull. Native QUSIB

  bastard oak · Fagaceae
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  Quercus stellata Wangenh. Native QUST

  post oak · Fagaceae
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  Quincula lobata (Torr.) Raf. Native QULO2

  Chinese lantern · Solanaceae
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  Ratibida columnifera (Nutt.) Wooton & Standl. Native RACO3

  upright prairie coneflower · Asteraceae
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  Rhus lanceolata (A. Gray) Britton Native RHLA3

  prairie sumac · Anacardiaceae
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  Rhus trilobata Nutt. Native RHTR

  skunkbush sumac · Anacardiaceae
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  Rhus trilobata Nutt. var. trilobata Native RHTRT

  skunkbush sumac · Anacardiaceae
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  Rhynchospora colorata (L.) H. Pfeiffer Native RHCO7

  starrush whitetop · Cyperaceae
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  Salvia farinacea Benth. Native SAFA2

  mealycup sage · Lamiaceae
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  Salvia texana (Scheele) Torr. Native SATE3

  Texas sage · Lamiaceae
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  Sapindus saponaria L. Native SASA4

  wingleaf soapberry · Sapindaceae
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  Sapindus saponaria L. var. drummondii (Hook. & Arn.) L.D. Benson Native SASAD

  western soapberry · Sapindaceae
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  Schedonnardus paniculatus (Nutt.) Trel. Native SCPA

  tumblegrass · Poaceae
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  Schizachyrium scoparium (Michx.) Nash Native SCSC

  little bluestem · Poaceae
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  Scutellaria resinosa Torr. Native SCRE3

  sticky skullcap · Lamiaceae
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  Scutellaria wrightii A. Gray Native SCWR2

  Wright's skullcap · Lamiaceae
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  Senecio ampullaceus Hook. Native SEAM2

  Texas ragwort · Asteraceae
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  Senecio flaccidus Less. Native SEFL3

  threadleaf ragwort · Asteraceae
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  Senegalia wrightii (Benth.) Britton & Rose Native SEWR4

  catclaw acacia · Fabaceae
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  Setaria adhaerens (Forssk.) Chiov. Introduced SEAD

  bur bristlegrass · Poaceae
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  Setaria reverchonii (Vasey) Pilg. Native SERE3

  Reverchon's bristlegrass · Poaceae
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  Sibara virginica (L.) Rollins Native SIVI2

  Virginia winged rockcress · Brassicaceae
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  Sideroxylon lanuginosum Michx. Native SILA20

  gum bully · Sapotaceae
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  Sideroxylon lanuginosum Michx. ssp. albicans (Sarg.) Kartesz & Gandhi Native SILAA4

  gum bully · Sapotaceae
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  Silphium albiflorum A. Gray Native SIAL

  white rosinweed · Asteraceae
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  Simsia calva (Engelm. & A. Gray) A. Gray Native SICA7

  awnless bushsunflower · Asteraceae
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  Sisyrinchium chilense Hook. Native SICH2

  swordleaf blue-eyed grass · Iridaceae
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  Solanum dimidiatum Raf. Native SODI

  western horsenettle · Solanaceae
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  Solanum elaeagnifolium Cav. Native SOEL

  silverleaf nightshade · Solanaceae
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  Solidago gigantea Aiton Native SOGI

  giant goldenrod · Asteraceae
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  Sonchus asper (L.) Hill Introduced SOAS

  spiny sowthistle · Asteraceae
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  Sonchus oleraceus L. Introduced SOOL

  common sowthistle · Asteraceae
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  Sorghum halepense (L.) Pers. Introduced SOHA

  Johnsongrass · Poaceae
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  Spermolepis divaricata (Walter) Raf. ex Ser. Native SPDI2

  roughfruit scaleseed · Apiaceae
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  Spermolepis echinata (Nutt. ex DC.) A. Heller Native SPEC2

  bristly scaleseed · Apiaceae
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  Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

  sand dropseed · Poaceae
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  Stenaria nigricans (Lam.) Terrell Native STNI6

  diamond-flowers · Rubiaceae
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  Stenaria nigricans (Lam.) Terrell var. nigricans Native STNIN

  diamondflowers · Rubiaceae
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  Stenosiphon linifolius (Nutt. ex James) Heynh. Native STLI2

  false gaura · Onagraceae
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  Stillingia texana I.M. Johnst. Native STTE3

  Texas toothleaf · Euphorbiaceae
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  Symphyotrichum ericoides (L.) G.L. Nesom Native SYER

  white heath aster · Asteraceae
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  Symphyotrichum ericoides (L.) G.L. Nesom var. ericoides Native SYERE

  white heath aster · Asteraceae
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  Tephrosia virginiana (L.) Pers. Native TEVI

  Virginia tephrosia · Fabaceae
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  Tetraneuris scaposa (DC.) Greene Native TESC2

  stemmy four-nerve daisy · Asteraceae
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  Tetraneuris scaposa (DC.) Greene var. scaposa Native TESCS

  stemmy four-nerve daisy · Asteraceae
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  Teucrium laciniatum Torr. Native TELA

  lacy germander · Lamiaceae
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  Thelesperma filifolium (Hook.) A. Gray Native THFI

  stiff greenthread · Asteraceae
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  Thelesperma filifolium (Hook.) A. Gray var. filifolium Native THFIF

  stiff greenthread · Asteraceae
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  Thelesperma megapotamicum (Spreng.) Kuntze Native THME

  Hopi tea greenthread · Asteraceae