Harris County

Showing 1–50 of 761.

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  Acalypha ostryifolia Riddell Native ACOS

  pineland threeseed mercury · Euphorbiaceae
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  Acalypha rhomboidea Raf. Native ACRH

  common threeseed mercury · Euphorbiaceae
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  Acer floridanum (Chapm.) Pax Native ACFL

  southern sugar maple · Aceraceae
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  Acer leucoderme Small Native ACLE

  chalk maple · Aceraceae
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  Acer negundo L. Native ACNE2

  boxelder · Aceraceae
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  Acer negundo L. var. negundo Native ACNEN

  boxelder · Aceraceae
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  Acer rubrum L. Native ACRU

  red maple · Aceraceae
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  Achillea millefolium L. Both ACMI2

  common yarrow · Asteraceae
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  Achillea millefolium L. var. occidentalis DC. Native ACMIO

  western yarrow · Asteraceae
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  Actaea pachypoda Elliott Native ACPA

  white baneberry · Ranunculaceae
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  Actaea racemosa L. Native ACRA7

  black baneberry · Ranunculaceae
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  Actaea racemosa L. var. racemosa Native ACRAR

  black bugbane · Ranunculaceae
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  Adiantum pedatum L. Native ADPE

  northern maidenhair · Pteridaceae
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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
• ⚘
  Aesculus ×mutabilis (Spach) Scheele [pavia × sylvatica] Native AEMU

  buckeye · Hippocastanaceae
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  Agalinis fasciculata (Elliott) Raf. Native AGFA2

  beach false foxglove · Scrophulariaceae
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  Agalinis tenuifolia (Vahl) Raf. Native AGTE3

  slenderleaf false foxglove · Scrophulariaceae
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  Ageratina altissima (L.) R.M. King & H. Rob. Native AGAL5

  white snakeroot · Asteraceae
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  Ageratina altissima (L.) R.M. King & H. Rob. var. altissima Native AGALA

  white snakeroot · Asteraceae
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  Ageratina aromatica (L.) Spach Native AGAR4

  lesser snakeroot · Asteraceae
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  Ageratina aromatica (L.) Spach var. aromatica Native AGARA

  lesser snakeroot · Asteraceae
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  Agrimonia pubescens Wallr. Native AGPU

  soft agrimony · Rosaceae
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  Agrostis elliottiana Schult. Native AGEL4

  Elliott's bentgrass · Poaceae
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  Agrostis perennans (Walter) Tuck. Native AGPE

  upland bentgrass · Poaceae
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  Ailanthus altissima (Mill.) Swingle Introduced AIAL

  tree of heaven · Simaroubaceae
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  Aira elegans Willd. ex Kunth Introduced AIEL4

  annual silver hairgrass · Poaceae
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  Albizia julibrissin Durazz. Introduced ALJU

  silktree · Fabaceae
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  Aletris farinosa L. Native ALFA2

  white colicroot · Liliaceae
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  Allium vineale L. Introduced ALVI

  wild garlic · Liliaceae
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  Allium vineale L. ssp. vineale Introduced ALVIV

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

  hazel alder · Betulaceae
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  Alternanthera philoxeroides (Mart.) Griseb. Introduced ALPH

  alligatorweed · Amaranthaceae
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  Amaranthus deflexus L. Introduced AMDE

  largefruit amaranth · Amaranthaceae
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  Amaranthus spinosus L. Native AMSP

  spiny amaranth · Amaranthaceae
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  Amaranthus viridis L. Native AMVI

  slender amaranth · Amaranthaceae
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  Amelanchier arborea (Michx. f.) Fernald Native AMAR3

  common serviceberry · Rosaceae
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  Amorpha fruticosa L. Native AMFR

  false indigo bush · Fabaceae
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  Amphianthus pusillus Torr. Native AMPU7

  little amphianthus · Scrophulariaceae
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  Amsonia tabernaemontana Walter Native AMTA2

  eastern bluestar · Apocynaceae
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  Andropogon gerardii Vitman Native ANGE

  big bluestem · Poaceae
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  Andropogon glomeratus (Walter) Britton, Sterns & Poggenb. Native ANGL2

  bushy 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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  Anemone virginiana L. Native ANVI3

  tall thimbleweed · Ranunculaceae
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  Anemone virginiana L. var. virginiana Native ANVIV2

  tall thimbleweed · Ranunculaceae
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  Angelica venenosa (Greenway) Fernald Native ANVE

  hairy angelica · Apiaceae
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  Antennaria plantaginifolia (L.) Richardson Native ANPL

  woman's tobacco · Asteraceae