Houston County

Showing 551–600 of 641.

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  Sesbania drummondii (Rydb.) Cory Native SEDR

  poisonbean · Fabaceae
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  Sesbania vesicaria (Jacq.) Elliott Native SEVE

  bagpod · Fabaceae
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  Sida rhombifolia L. Native SIRH

  Cuban jute · Malvaceae
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  Sisyrinchium albidum Raf. Native SIAL3

  white blue-eyed grass · Iridaceae
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  Sisyrinchium langloisii Greene Native SILA5

  roadside blue-eyed grass · Iridaceae
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  Smilax bona-nox L. Native SMBO2

  saw greenbrier · Smilacaceae
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  Smilax bona-nox L. var. bona-nox Native SMBOB2

  saw greenbrier · Smilacaceae
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  Smilax glauca Walter Native SMGL

  cat greenbrier · Smilacaceae
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  Smilax smallii Morong Native SMSM

  lanceleaf greenbrier · Smilacaceae
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  Solidago altissima L. Native SOAL6

  Canada goldenrod · Asteraceae
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  Solidago gigantea Aiton Native SOGI

  giant goldenrod · Asteraceae
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  Solidago petiolaris Aiton Native SOPE

  downy ragged goldenrod · Asteraceae
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  Solidago petiolaris Aiton var. angusta (Torr. & A. Gray) A. Gray Native SOPEA

  downy ragged goldenrod · Asteraceae
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  Solidago ulmifolia Muhl. ex Willd. Native SOUL2

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

  spiny sowthistle · Asteraceae
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  Sorghastrum elliottii (C. Mohr) Nash Native SOEL3

  slender Indiangrass · Poaceae
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  Sorghastrum nutans (L.) Nash Native SONU2

  Indiangrass · Poaceae
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  Sphenoclea zeylanica Gaertn. Introduced SPZE

  chickenspike · Sphenocleaceae
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  Sphenopholis obtusata (Michx.) Scribn. Native SPOB

  prairie wedgescale · Poaceae
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  Spiranthes cernua (L.) Rich. Native SPCE

  nodding lady's tresses · Orchidaceae
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  Spiranthes ovalis Lindl. Native SPOV

  October lady's tresses · Orchidaceae
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  Spiranthes tuberosa Raf. Native SPTU

  little lady's tresses · Orchidaceae
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  Spiranthes vernalis Engelm. & A. Gray Native SPVE

  spring lady's tresses · Orchidaceae
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  Spirodela polyrrhiza (L.) Schleid. Native SPPO

  common duckmeat · Lemnaceae
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  Sporobolus compositus (Poir.) Merr. Native SPCO16

  composite dropseed · Poaceae
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  Sporobolus indicus (L.) R. Br. Introduced SPIN4

  smut grass · Poaceae
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  Sporobolus indicus (L.) R. Br. var. indicus Introduced SPINI2

  smut grass · Poaceae
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  Sporobolus junceus (P. Beauv.) Kunth Native SPJU

  pineywoods 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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  Stillingia sylvatica L. Native STSY

  queen's-delight · Euphorbiaceae
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  Stillingia sylvatica L. ssp. sylvatica Native STSYS2

  queen's-delight · Euphorbiaceae
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  Strophostyles leiosperma (Torr. & A. Gray) Piper Native STLE6

  slickseed fuzzybean · Fabaceae
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  Stylisma pickeringii (Torr. ex M.A. Curtis) A. Gray Native STPI3

  Pickering's dawnflower · Convolvulaceae
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  Stylisma pickeringii (Torr. ex M.A. Curtis) A. Gray var. pattersonii (Fernald & B.G. Schub.) Myint Native STPIP2

  Patterson's dawnflower · Convolvulaceae
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  Stylosanthes biflora (L.) Britton, Sterns & Poggenb. Native STBI2

  sidebeak pencilflower · Fabaceae
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  Symphyotrichum dumosum (L.) G.L. Nesom Native SYDU2

  rice button aster · Asteraceae
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  Symphyotrichum lateriflorum (L.) Á. Löve & D. Löve Native SYLA4

  calico aster · Asteraceae
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  Symphyotrichum oolentangiense (Riddell) G.L. Nesom Native SYOO

  skyblue aster · Asteraceae
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  Symphyotrichum patens (Aiton) G.L. Nesom Native SYPA11

  late purple aster · Asteraceae
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  Symphyotrichum patens (Aiton) G.L. Nesom var. patens Native SYPAP2

  late purple aster · Asteraceae
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  Symphyotrichum pratense (Raf.) G.L. Nesom Native SYPR7

  barrens silky aster · Asteraceae
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  Tephrosia virginiana (L.) Pers. Native TEVI

  Virginia tephrosia · Fabaceae
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  Tetragonotheca ludoviciana (Torr. & A. Gray) A. Gray ex H.M. Hall Native TELU

  Louisiana nerveray · Asteraceae
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  Thalictrum revolutum DC. Native THRE

  waxyleaf meadow-rue · Ranunculaceae
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  Thaspium barbinode (Michx.) Nutt. Native THBA

  hairyjoint meadowparsnip · Apiaceae
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  Thelesperma flavodiscum (Shinners) B.L. Turner Native THFL

  East Texas greenthread · Asteraceae
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  Trachelospermum difforme (Walter) A. Gray Native TRDI

  climbing dogbane · Apocynaceae
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  Tradescantia hirsutiflora Bush Native TRHI

  hairyflower spiderwort · Commelinaceae
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  Tradescantia reverchonii Bush Native TRRE

  Reverchon's spiderwort · Commelinaceae