Riley County

Showing 1–50 of 1,056.

• 
  Abutilon theophrasti Medik. Introduced ABTH

  velvetleaf · Malvaceae
• 
  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
• 
  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
• 
  Achillea millefolium L. var. occidentalis DC. Native ACMIO

  western yarrow · Asteraceae
• 
  Acorus calamus L. Introduced ACCA4

  calamus · Acoraceae
• 
  Acroptilon repens (L.) DC. Introduced ACRE3

  hardheads · 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
• 
  Agalinis aspera (Douglas ex Benth.) Britton Native AGAS2

  tall false foxglove · Scrophulariaceae
• 
  Agalinis densiflora (Benth.) S.F. Blake Native AGDE6

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

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

  yellow 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
• 
  Agrimonia pubescens Wallr. Native AGPU

  soft agrimony · Rosaceae
• 
  Agrostemma githago L. Introduced AGGI

  common corncockle · Caryophyllaceae
• 
  Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. Native AGHY

  winter bentgrass · Poaceae
• 
  Agrostis stolonifera L. Introduced AGST2

  creeping bentgrass · Poaceae
• 
  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 canadense L. Native ALCA3

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

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

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

  meadow garlic · Liliaceae
• 
  Allium stellatum Fraser ex Ker Gawl. Native ALST

  autumn onion · Liliaceae
• 
  Alopecurus carolinianus Walter Native ALCA4

  Carolina foxtail · Poaceae
• 
  Alopecurus myosuroides Huds. Introduced ALMY

  slender meadow 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
• 
  Amaranthus palmeri S. Watson Native AMPA

  carelessweed · Amaranthaceae
• 
  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 psilostachya DC. Native AMPS

  Cuman ragweed · Asteraceae
• 
  Ambrosia trifida L. Native AMTR

  great ragweed · Asteraceae
• 
  Ammannia auriculata Willd. Native AMAU2

  eared redstem · Lythraceae
• 
  Ammannia coccinea Rottb. Native AMCO

  valley redstem · Lythraceae
• 
  Ammoselinum popei Torr. & A. Gray Native AMPO4

  plains sandparsley · Apiaceae
• 
  Amorpha canescens Pursh Native AMCA6

  leadplant · Fabaceae