Starr County

Showing 501–550 of 592.

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  Sibara viereckii (O.E. Schultz) Rollins Native SIVI5

  Viereck's winged rockcress · Brassicaceae
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  Sida abutifolia Mill. Introduced SIAB

  spreading fanpetals · Malvaceae
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  Sida lindheimeri Engelm. & A. Gray Native SILI

  showy fanpetals · Malvaceae
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  Sideroxylon celastrinum (Kunth) T.D. Penn. Native SICE2

  saffron plum · Sapotaceae
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  Simsia calva (Engelm. & A. Gray) A. Gray Native SICA7

  awnless bushsunflower · Asteraceae
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  Sisymbrium irio L. Introduced SIIR

  London rocket · Brassicaceae
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  Solanum douglasii Dunal Native SODO

  greenspot nightshade · Solanaceae
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  Solanum elaeagnifolium Cav. Native SOEL

  silverleaf nightshade · Solanaceae
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  Solanum ptycanthum Dunal Native SOPT7

  West Indian nightshade · Solanaceae
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  Solanum rostratum Dunal Native SORO

  buffalobur nightshade · Solanaceae
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  Solanum triquetrum Cav. Native SOTR2

  Texas nightshade · Solanaceae
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  Sonchus oleraceus L. Introduced SOOL

  common sowthistle · Asteraceae
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  Sphaeralcea angustifolia (Cav.) G. Don Native SPAN3

  copper globemallow · Malvaceae
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  Sphaeralcea hastulata A. Gray Native SPHA

  spear globemallow · Malvaceae
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  Sphaeralcea pedatifida (A. Gray) A. Gray Native SPPE2

  palmleaf globemallow · Malvaceae
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  Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

  sand dropseed · Poaceae
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  Sporobolus pyramidatus (Lam.) Hitchc. Native SPPY2

  Madagascar dropseed · Poaceae
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  Stachys drummondii Benth. Native STDR

  Drummond's hedgenettle · Lamiaceae
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  Stemodia schottii Holz. Native STSC

  Rio Grande twintip · Scrophulariaceae
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  Stenandrium dulce (Cav.) Nees Native STDU2

  sweet shaggytuft · Acanthaceae
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  Stenandrium dulce (Cav.) Nees var. dulce Native STDUD

  sweet shaggytuft · Acanthaceae
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  Stillingia treculiana (Müll. Arg.) I.M. Johnst. Native STTR2

  Trecul's toothleaf · Euphorbiaceae
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  Suaeda tampicensis (Standl.) Standl. Native SUTA

  coastal seepweed · Chenopodiaceae
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  Symphyotrichum divaricatum (Nutt.) G.L. Nesom Native SYDI2

  southern annual saltmarsh aster · Asteraceae
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  Synthlipsis greggii A. Gray Native SYGR

  Gregg's keelpod · Brassicaceae
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  Taxodium mucronatum Ten. Native TAMU

  Montezuma bald cypress · Cupressaceae
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  Tetraclea coulteri A. Gray Native TECO

  Coulter's wrinklefruit · Verbenaceae
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  Tetragonotheca repanda (Buckley) Small Native TERE2

  showy nerveray · Asteraceae
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  Tetragonotheca texana Engelm. & A. Gray ex A. Gray Native TETE2

  squarebud daisy · Asteraceae
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  Tetraneuris linearifolia (Hook.) Greene Native TELI3

  fineleaf fournerved daisy · Asteraceae
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  Teucrium cubense Jacq. Native TECU

  small coastal germander · Lamiaceae
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  Thamnosma texana (A. Gray) Torr. Native THTE2

  rue of the mountains · Rutaceae
• ⚘
  Thelesperma ambiguum A. Gray Native THAM4

  Colorado greenthread · Asteraceae
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  Thelocactus bicolor (Galeotti ex N.E. Pfeiffer) Britton & Rose Native THBI

  glory of Texas · Cactaceae
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  Thelocactus bicolor (Galeotti ex N.E. Pfeiffer) Britton & Rose var. bicolor Native THBIB

  glory of Texas · Cactaceae
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  Thelocactus setispinus (Engelm.) E.F. Anderson Native THSE5

  miniature barrel cactus · Cactaceae
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  Thelypodiopsis shinnersii (M.C. Johnst.) Rollins Native THSH

  Rio Grande tumblemustard · Brassicaceae
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  Thevetia peruviana (Pers.) K. Schum. Introduced THPE3

  luckynut · Apocynaceae
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  Thymophylla pentachaeta (DC.) Small Native THPE4

  fiveneedle pricklyleaf · Asteraceae
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  Thymophylla pentachaeta (DC.) Small var. pentachaeta Native THPEP

  fiveneedle pricklyleaf · Asteraceae
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  Thymophylla tenuiloba (DC.) Small Native THTE7

  bristleleaf pricklyleaf · Asteraceae
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  Thymophylla tenuiloba (DC.) Small var. tenuiloba Native THTET

  bristleleaf pricklyleaf · Asteraceae
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  Thymophylla tephroleuca (S.F. Blake) Strother Native THTE8

  ashy pricklyleaf · Asteraceae
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  Tidestromia lanuginosa (Nutt.) Standl. Native TILA2

  woolly tidestromia · Amaranthaceae
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  Tiquilia canescens (DC.) A.T. Richardson Native TICA3

  woody crinklemat · Boraginaceae
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  Tiquilia canescens (DC.) A.T. Richardson var. canescens Native TICAC

  woody crinklemat · Boraginaceae
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  Tragia amblyodonta (Müll. Arg.) Pax & K. Hoffm. Native TRAM9

  dogtooth noseburn · Euphorbiaceae
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  Tragia glanduligera Pax & K. Hoffm. Native TRGL

  brush noseburn · Euphorbiaceae
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  Tragus berteronianus Schult. Introduced TRBE

  spiked bur grass · Poaceae
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  Tribulus terrestris L. Introduced TRTE

  puncturevine · Zygophyllaceae