Clark County

Showing 1–50 of 786.

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  Abutilon theophrasti Medik. Introduced ABTH

  velvetleaf · Malvaceae
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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 nigrum Michx. f. Native ACNI5

  black maple · Aceraceae
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  Acer rubrum L. Native ACRU

  red maple · Aceraceae
• 
  Acer rubrum L. var. rubrum Native ACRUR

  red maple · Aceraceae
• 
  Acer saccharum Marshall Native ACSA3

  sugar maple · Aceraceae
• 
  Acer saccharum Marshall var. saccharum Native ACSAS

  sugar maple · Aceraceae
• 
  Achillea millefolium L. Both ACMI2

  common yarrow · Asteraceae
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  Acorus americanus (Raf.) Raf. Native ACAM

  sweetflag · Acoraceae
• 
  Actaea pachypoda Elliott Native ACPA

  white baneberry · Ranunculaceae
• 
  Adiantum pedatum L. Native ADPE

  northern maidenhair · Pteridaceae
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  Aesculus glabra Willd. Native AEGL

  Ohio buckeye · Hippocastanaceae
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  Aesculus glabra Willd. var. glabra Native AEGLG

  Ohio buckeye · Hippocastanaceae
• 
  Aethusa cynapium L. Introduced AECY2

  fool's parsley · Apiaceae
• 
  Agalinis purpurea (L.) Pennell Native AGPU5

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

  slenderleaf false foxglove · Scrophulariaceae
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  Agalinis tenuifolia (Vahl) Raf. var. macrophylla (Benth.) S.F. Blake Native AGTEM

  slenderleaf false foxglove · Scrophulariaceae
• 
  Agastache nepetoides (L.) Kuntze Native AGNE2

  yellow giant hyssop · Lamiaceae
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  Agastache scrophulariifolia (Willd.) Kuntze Native AGSC

  purple giant hyssop · Lamiaceae
• 
  Ageratina altissima (L.) R.M. King & H. Rob. Native AGAL5

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

  white snakeroot · Asteraceae
• 
  Agrimonia parviflora Aiton Native AGPA6

  harvestlice · Rosaceae
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  Agrimonia pubescens Wallr. Native AGPU

  soft agrimony · Rosaceae
• 
  Agrostemma githago L. Introduced AGGI

  common corncockle · Caryophyllaceae
• 
  Ailanthus altissima (Mill.) Swingle Introduced AIAL

  tree of heaven · Simaroubaceae
• 
  Alisma subcordatum Raf. Native ALSU

  American water plantain · Alismataceae
• 
  Alliaria petiolata (M. Bieb.) Cavara & Grande Introduced ALPE4

  garlic mustard · Brassicaceae
• 
  Allium cepa L. Introduced ALCE

  garden onion · Liliaceae
• 
  Allium cernuum Roth Native ALCE2

  nodding onion · Liliaceae
• 
  Allium cernuum Roth var. cernuum Native ALCEC2

  nodding onion · Liliaceae
• 
  Allium tricoccum Aiton Native ALTR3

  ramp · Liliaceae
• 
  Amaranthus albus L. Introduced AMAL

  prostrate pigweed · Amaranthaceae
• 
  Amaranthus blitoides S. Watson Introduced AMBL

  mat amaranth · Amaranthaceae
• 
  Amaranthus retroflexus L. Native AMRE

  redroot amaranth · Amaranthaceae
• 
  Ambrosia artemisiifolia L. Both AMAR2

  annual ragweed · Asteraceae
• 
  Ambrosia artemisiifolia L. var. elatior (L.) Descourtils Introduced AMARE

  annual ragweed · Asteraceae
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  Ambrosia trifida L. Native AMTR

  great ragweed · Asteraceae
• 
  Ambrosia trifida L. var. trifida Native AMTRT2

  great ragweed · Asteraceae
• 
  Amelanchier stolonifera Wiegand Native AMST80

  running serviceberry · Rosaceae
• 
  Amphicarpaea bracteata (L.) Fernald Native AMBR2

  American hogpeanut · Fabaceae
• 
  Anagallis arvensis L. Introduced ANAR

  scarlet pimpernel · Primulaceae
• 
  Andropogon gerardii Vitman Native ANGE

  big bluestem · Poaceae
• 
  Andropogon virginicus L. Native ANVI2

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

  broomsedge bluestem · Poaceae
• 
  Anemone canadensis L. Native ANCA8

  Canadian anemone · Ranunculaceae
• 
  Anemone virginiana L. Native ANVI3

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

  tall thimbleweed · Ranunculaceae
• 
  Angelica atropurpurea L. Native ANAT

  purplestem angelica · Apiaceae
• 
  Apios americana Medik. Native APAM

  groundnut · Fabaceae