Marion County

Showing 1–50 of 512.

• 
  Abutilon theophrasti Medik. Introduced ABTH

  velvetleaf · Malvaceae
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  Acalypha ostryifolia Riddell Native ACOS

  pineland threeseed mercury · Euphorbiaceae
• 
  Acalypha rhomboidea Raf. Native ACRH

  common threeseed mercury · Euphorbiaceae
• 
  Acalypha virginica L. Native ACVI

  Virginia threeseed mercury · Euphorbiaceae
• 
  Acer negundo L. Native ACNE2

  boxelder · Aceraceae
• 
  Acer saccharinum L. Native ACSA2

  silver maple · Aceraceae
• 
  Achillea millefolium L. Both ACMI2

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

  western yarrow · Asteraceae
• 
  Aegilops cylindrica Host Introduced AECY

  jointed goatgrass · Poaceae
• 
  Aesculus glabra Willd. Native AEGL

  Ohio buckeye · Hippocastanaceae
• 
  Aesculus glabra Willd. var. arguta (Buckley) B.L. Rob. Native AEGLA

  Ohio buckeye · Hippocastanaceae
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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
• 
  Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. Native AGHY

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

  tree of heaven · Simaroubaceae
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  Allium canadense L. Native ALCA3

  meadow garlic · Liliaceae
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  Allium canadense L. var. fraseri Ownbey Native ALCAF

  Fraser meadow garlic · Liliaceae
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  Allium canadense L. var. lavandulare (Bates) Ownbey & Aase Native ALCAL

  meadow garlic · Liliaceae
• 
  Alopecurus carolinianus Walter Native ALCA4

  Carolina foxtail · Poaceae
• 
  Amaranthus albus L. Introduced AMAL

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

  mat amaranth · Amaranthaceae
• 
  Amaranthus hybridus L. Native AMHY

  slim amaranth · Amaranthaceae
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  Amaranthus retroflexus L. Native AMRE

  redroot amaranth · Amaranthaceae
• 
  Amaranthus tuberculatus (Moq.) Sauer Native AMTU

  roughfruit amaranth · Amaranthaceae
• 
  Ambrosia artemisiifolia L. Both AMAR2

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

  annual ragweed · Asteraceae
• 
  Ambrosia grayi (A. Nelson) Shinners Native AMGR5

  woollyleaf bur ragweed · Asteraceae
• 
  Ambrosia psilostachya DC. Native AMPS

  Cuman ragweed · Asteraceae
• 
  Ambrosia trifida L. Native AMTR

  great ragweed · Asteraceae
• 
  Ammannia coccinea Rottb. Native AMCO

  valley redstem · Lythraceae
• 
  Amorpha canescens Pursh Native AMCA6

  leadplant · Fabaceae
• 
  Amorpha fruticosa L. Native AMFR

  false indigo bush · Fabaceae
• 
  Amphiachyris dracunculoides (DC.) Nutt. Native AMDR

  prairie broomweed · Asteraceae
• 
  Andropogon gerardii Vitman Native ANGE

  big bluestem · Poaceae
• 
  Androstephium coeruleum (Scheele) Greene Native ANCO9

  blue funnel lily · Liliaceae
• 
  Anemone caroliniana Walter Native ANCA9

  Carolina anemone · Ranunculaceae
• ⚘
  Antennaria neglecta Greene Native ANNE

  field pussytoes · Asteraceae
• 
  Apocynum cannabinum L. Native APCA

  Indianhemp · Apocynaceae
• 
  Arenaria serpyllifolia L. Introduced ARSE2

  thymeleaf sandwort · Caryophyllaceae
• 
  Aristida basiramea Engelm. ex Vasey Native ARBA2

  forked threeawn · Poaceae
• 
  Aristida oligantha Michx. Native AROL

  prairie threeawn · Poaceae
• 
  Arnoglossum plantagineum Raf. Native ARPL4

  groovestem Indian plantain · Asteraceae
• 
  Artemisia ludoviciana Nutt. Both ARLU

  white sagebrush · Asteraceae
• 
  Artemisia ludoviciana Nutt. ssp. ludoviciana Native ARLUL2

  white sagebrush · Asteraceae
• 
  Artemisia ludoviciana Nutt. ssp. mexicana (Willd. ex Spreng.) D.D. Keck Native ARLUM2

  white sagebrush · Asteraceae
• 
  Asclepias pumila (A. Gray) Vail Native ASPU

  plains milkweed · Asclepiadaceae
• 
  Asclepias syriaca L. Native ASSY

  common 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
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  Asclepias viridiflora Raf. Native ASVI

  green comet milkweed · Asclepiadaceae