Houston County

Showing 1–50 of 641.

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  Acalypha gracilens A. Gray Native ACGR2

  slender threeseed mercury · Euphorbiaceae
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  Acalypha virginica L. Native ACVI

  Virginia threeseed mercury · Euphorbiaceae
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  Acer negundo L. Native ACNE2

  boxelder · Aceraceae
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  Acer rubrum L. Native ACRU

  red maple · Aceraceae
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  Aeschynomene indica L. Native AEIN

  Indian jointvetch · Fabaceae
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  Aesculus pavia L. Native AEPA

  red buckeye · Hippocastanaceae
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  Aesculus pavia L. var. pavia Native AEPAP

  red buckeye · Hippocastanaceae
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  Agalinis purpurea (L.) Pennell Native AGPU5

  purple false foxglove · Scrophulariaceae
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  Agrostis elliottiana Schult. Native AGEL4

  Elliott's bentgrass · Poaceae
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  Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. Native AGHY

  winter bentgrass · Poaceae
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  Agrostis perennans (Walter) Tuck. Native AGPE

  upland bentgrass · Poaceae
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  Aira caryophyllea L. Introduced AICA

  silver hairgrass · Poaceae
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  Aira caryophyllea L. var. caryophyllea Introduced AICAC2

  silver hairgrass · Poaceae
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  Allium canadense L. Native ALCA3

  meadow garlic · Liliaceae
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  Allium canadense L. var. canadense Native ALCAC

  meadow garlic · Liliaceae
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  Alnus serrulata (Aiton) Willd. Native ALSE2

  hazel alder · Betulaceae
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  Alopecurus carolinianus Walter Native ALCA4

  Carolina foxtail · Poaceae
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  Alophia drummondii (Graham) R.C. Foster Native ALDR2

  propeller flower · Iridaceae
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  Amorpha paniculata Torr. & A. Gray Native AMPA4

  panicled false indigo · Fabaceae
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  Amphicarpaea bracteata (L.) Fernald Native AMBR2

  American hogpeanut · Fabaceae
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  Amsonia repens Shinners Native AMRE3

  creeping bluestar · Apocynaceae
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  Anagallis minima (L.) Krause Native ANMI4

  chaffweed · Primulaceae
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  Andropogon glomeratus (Walter) Britton, Sterns & Poggenb. Native ANGL2

  bushy bluestem · Poaceae
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  Andropogon gyrans Ashe Native ANGY2

  Elliott's bluestem · Poaceae
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  Andropogon gyrans Ashe var. gyrans Native ANGYG

  Elliott's bluestem · Poaceae
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  Andropogon ternarius Michx. Native ANTE2

  splitbeard bluestem · Poaceae
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  Andropogon ternarius Michx. var. ternarius Native ANTET

  splitbeard bluestem · Poaceae
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  Andropogon virginicus L. Native ANVI2

  broomsedge bluestem · Poaceae
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  Andropogon virginicus L. var. virginicus Native ANVIV

  broomsedge bluestem · Poaceae
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  Anthemis cotula L. Introduced ANCO2

  stinking chamomile · Asteraceae
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  Apios americana Medik. Native APAM

  groundnut · Fabaceae
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  Apocynum cannabinum L. Native APCA

  Indianhemp · Apocynaceae
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  Arachis hypogaea L. Introduced ARHY

  peanut · Fabaceae
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  Arisaema dracontium (L.) Schott Native ARDR3

  green dragon · Araceae
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  Arisaema triphyllum (L.) Schott Native ARTR

  Jack in the pulpit · Araceae
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  Aristida desmantha Trin. & Rupr. Native ARDE3

  curly threeawn · Poaceae
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  Aristida lanosa Muhl. ex Elliott Native ARLA6

  woollysheath threeawn · Poaceae
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  Aristida longespica Poir. Native ARLO16

  slimspike threeawn · Poaceae
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  Aristida oligantha Michx. Native AROL

  prairie threeawn · Poaceae
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  Aristida purpurascens Poir. Native ARPU8

  arrowfeather threeawn · Poaceae
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  Aristolochia reticulata Jacq. Native ARRE3

  Texas dutchman's pipe · Aristolochiaceae
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  Aristolochia serpentaria L. Native ARSE3

  Virginia snakeroot · Aristolochiaceae
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  Arundinaria gigantea (Walter) Muhl. Native ARGI

  giant cane · Poaceae
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  Arundo donax L. Introduced ARDO4

  giant reed · Poaceae
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  Asclepias amplexicaulis Sm. Native ASAM

  clasping milkweed · Asclepiadaceae
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  Asclepias obovata Elliott Native ASOB

  pineland milkweed · Asclepiadaceae
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  Asclepias rubra L. Native ASRU

  red milkweed · Asclepiadaceae
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  Asclepias tomentosa Elliott Native ASTO

  tuba milkweed · Asclepiadaceae
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  Asclepias tuberosa L. Native ASTU

  butterfly milkweed · Asclepiadaceae
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  Asclepias tuberosa L. ssp. interior Woodson Native ASTUI

  butterfly milkweed · Asclepiadaceae