Sheridan County

Showing 1–50 of 577.

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  Acer negundo L. Native ACNE2

  boxelder · Aceraceae
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  Acer saccharinum L. Native ACSA2

  silver 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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  Agrostis stolonifera L. Introduced AGST2

  creeping bentgrass · Poaceae
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  Allium drummondii Regel Native ALDR

  Drummond's onion · Liliaceae
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  Alopecurus carolinianus Walter Native ALCA4

  Carolina foxtail · Poaceae
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  Amaranthus albus L. Introduced AMAL

  prostrate pigweed · Amaranthaceae
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  Amaranthus arenicola I.M. Johnst. Native AMAR

  sandhill amaranth · Amaranthaceae
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  Amaranthus blitoides S. Watson Introduced AMBL

  mat amaranth · Amaranthaceae
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  Amaranthus palmeri S. Watson Native AMPA

  carelessweed · Amaranthaceae
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  Amaranthus retroflexus L. Native AMRE

  redroot amaranth · Amaranthaceae
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  Ambrosia grayi (A. Nelson) Shinners Native AMGR5

  woollyleaf bur ragweed · Asteraceae
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  Ambrosia psilostachya DC. Native AMPS

  Cuman ragweed · Asteraceae
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  Ambrosia trifida L. Native AMTR

  great ragweed · Asteraceae
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  Ammannia coccinea Rottb. Native AMCO

  valley redstem · Lythraceae
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  Amorpha canescens Pursh Native AMCA6

  leadplant · Fabaceae
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  Amorpha fruticosa L. Native AMFR

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

  prairie broomweed · Asteraceae
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  Amphicarpaea bracteata (L.) Fernald Native AMBR2

  American hogpeanut · Fabaceae
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  Andropogon gerardii Vitman Native ANGE

  big bluestem · Poaceae
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  Andropogon hallii Hack. Native ANHA

  sand bluestem · Poaceae
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  Androsace occidentalis Pursh Native ANOC2

  western rockjasmine · Primulaceae
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  Anemone caroliniana Walter Native ANCA9

  Carolina anemone · Ranunculaceae
• ⚘
  Antennaria neglecta Greene Native ANNE

  field pussytoes · Asteraceae
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  Anthemis cotula L. Introduced ANCO2

  stinking chamomile · Asteraceae
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  Apocynum cannabinum L. Native APCA

  Indianhemp · Apocynaceae
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  Arctium minus Bernh. Introduced ARMI2

  lesser burdock · Asteraceae
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  Argemone polyanthemos (Fedde) G.B. Ownbey Native ARPO2

  crested pricklypoppy · Papaveraceae
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  Aristida purpurea Nutt. Native ARPU9

  purple threeawn · Poaceae
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  Aristida purpurea Nutt. var. longiseta (Steud.) Vasey Native ARPUL

  Fendler threeawn · Poaceae
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  Artemisia abrotanum L. Introduced ARAB2

  southernwood · Asteraceae
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  Artemisia biennis Willd. Both ARBI2

  biennial wormwood · Asteraceae
• 
  Artemisia biennis Willd. var. biennis Introduced ARBIB

  biennial wormwood · Asteraceae
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  Artemisia campestris L. Native ARCA12

  field sagewort · Asteraceae
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  Artemisia campestris L. ssp. caudata (Michx.) H.M. Hall & Clem. Native ARCAC

  field sagewort · Asteraceae
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  Artemisia carruthii Alph. Wood ex Carruth. Native ARCA14

  Carruth's sagewort · Asteraceae
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  Artemisia filifolia Torr. Native ARFI2

  sand sagebrush · Asteraceae
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  Artemisia ludoviciana Nutt. Both ARLU

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

  white sagebrush · Asteraceae
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  Asclepias arenaria Torr. Native ASAR

  sand milkweed · Asclepiadaceae
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  Asclepias engelmanniana Woodson Native ASEN

  Engelmann's milkweed · Asclepiadaceae
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  Asclepias incarnata L. Native ASIN

  swamp milkweed · Asclepiadaceae
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  Asclepias incarnata L. ssp. incarnata Native ASINI

  swamp milkweed · Asclepiadaceae
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  Asclepias latifolia (Torr.) Raf. Native ASLA4

  broadleaf milkweed · Asclepiadaceae
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  Asclepias pumila (A. Gray) Vail Native ASPU

  plains milkweed · Asclepiadaceae
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  Asclepias speciosa Torr. Native ASSP

  showy milkweed · Asclepiadaceae
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  Asclepias stenophylla A. Gray Native ASST

  slimleaf milkweed · Asclepiadaceae
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  Asclepias syriaca L. Native ASSY

  common milkweed · Asclepiadaceae
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  Asclepias viridiflora Raf. Native ASVI

  green comet milkweed · Asclepiadaceae