Illinois

• Adams 17001
  1,183 taxa Open ↗
• Alexander 17003
  1,220 taxa Open ↗
• Bond 17005
  682 taxa Open ↗
• Boone 17007
  1,163 taxa Open ↗
• Brown 17009
  836 taxa Open ↗
• Bureau 17011
  652 taxa Open ↗
• Calhoun 17013
  1,017 taxa Open ↗
• Carroll 17015
  931 taxa Open ↗
• Cass 17017
  1,389 taxa Open ↗
• Champaign 17019
  1,420 taxa Open ↗

Showing 51–100 of 766 (introduced).

• 
  Anthemis tinctoria L. Introduced ANTI

  golden chamomile · Asteraceae 4 counties
• 
  Anthoxanthum aristatum Boiss. Introduced ANAR7

  annual vernalgrass · Poaceae 1 county
• 
  Anthoxanthum odoratum L. Introduced ANOD

  sweet vernalgrass · Poaceae 4 counties
• 
  Anthoxanthum odoratum L. ssp. odoratum Introduced ANODO2

  sweet vernalgrass · Poaceae 4 counties
• 
  Anthriscus cerefolium (L.) Hoffm. Introduced ANCE

  garden chervil · Apiaceae 1 county
• 
  Anthriscus sylvestris (L.) Hoffm. Introduced ANSY

  wild chervil · Apiaceae 2 counties
• 
  Antirrhinum majus L. Introduced ANMA3

  garden snapdragon · Scrophulariaceae 1 county
• 
  Aquilegia vulgaris L. Introduced AQVU

  European columbine · Ranunculaceae 4 counties
• 
  Arabidopsis thaliana (L.) Heynh. Introduced ARTH

  mouseear cress · Brassicaceae 31 counties
• 
  Aralia elata (Miq.) Seem. Introduced AREL8

  Japanese angelica tree · Araliaceae 1 county
• 
  Arctium lappa L. Introduced ARLA3

  greater burdock · Asteraceae 11 counties
• 
  Arctium minus Bernh. Introduced ARMI2

  lesser burdock · Asteraceae 74 counties
• 
  Arctium tomentosum Mill. Introduced ARTO

  woolly burdock · Asteraceae 4 counties
• 
  Arenaria serpyllifolia L. Introduced ARSE2

  thymeleaf sandwort · Caryophyllaceae 43 counties
• 
  Armoracia rusticana G. Gaertn., B. Mey. & Scherb. Introduced ARRU4

  horseradish · Brassicaceae 38 counties
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl Introduced AREL3

  tall oatgrass · Poaceae 18 counties
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl var. elatius Introduced ARELE

  tall oatgrass · Poaceae 18 counties
• 
  Artemisia abrotanum L. Introduced ARAB2

  southernwood · Asteraceae 2 counties
• 
  Artemisia absinthium L. Introduced ARAB3

  absinthium · Asteraceae 11 counties
• 
  Artemisia annua L. Introduced ARAN3

  sweet sagewort · Asteraceae 50 counties
• 
  Artemisia biennis Willd. var. biennis Introduced ARBIB

  biennial wormwood · Asteraceae 27 counties
• 
  Artemisia pontica L. Introduced ARPO4

  Roman wormwood · Asteraceae 3 counties
• 
  Arum italicum Mill. Introduced ARIT

  Italian lords and ladies · Araceae 1 county
• 
  Arundo donax L. Introduced ARDO4

  giant reed · Poaceae 3 counties
• 
  Asparagus officinalis L. Introduced ASOF

  garden asparagus · Liliaceae 85 counties
• 
  Asperugo procumbens L. Introduced ASPR

  German-madwort · Boraginaceae 1 county
• 
  Aster tataricus L. f. Introduced ASTA

  Tatarian aster · Asteraceae 4 counties
• 
  Atriplex hortensis L. Introduced ATHO

  garden orache · Chenopodiaceae 3 counties
• 
  Atriplex patula L. Introduced ATPA4

  spear saltbush · Chenopodiaceae 54 counties
• 
  Atriplex rosea L. Introduced ATRO

  tumbling saltweed · Chenopodiaceae 2 counties
• 
  Avena fatua L. Introduced AVFA

  wild oat · Poaceae 6 counties
• 
  Avena sativa L. Introduced AVSA

  common oat · Poaceae 53 counties
• 
  Ballota nigra L. Introduced BANI

  black horehound · Lamiaceae 1 county
• 
  Ballota nigra L. var. nigra Introduced BANIN

  black horehound · Lamiaceae 1 county
• 
  Barbarea verna (Mill.) Asch. Introduced BAVE

  early yellowrocket · Brassicaceae 3 counties
• 
  Barbarea vulgaris W.T. Aiton Introduced BAVU

  garden yellowrocket · Brassicaceae 89 counties
• 
  Bassia scoparia (L.) A.J. Scott Introduced BASC5

  burningbush · Chenopodiaceae 46 counties
• 
  Belamcanda chinensis (L.) DC. Introduced BECH

  blackberry lily · Iridaceae 43 counties
• 
  Bellis perennis L. Introduced BEPE2

  lawndaisy · Asteraceae 2 counties
• 
  Berberis thunbergii DC. Introduced BETH

  Japanese barberry · Berberidaceae 39 counties
• 
  Berberis vulgaris L. Introduced BEVU

  common barberry · Berberidaceae 19 counties
• 
  Berteroa incana (L.) DC. Introduced BEIN2

  hoary alyssum · Brassicaceae 23 counties
• 
  Borago officinalis L. Introduced BOOF

  common borage · Boraginaceae 6 counties
• 
  Brassica juncea (L.) Czern. Introduced BRJU

  brown mustard · Brassicaceae 47 counties
• 
  Brassica napus L. Introduced BRNA

  rape · Brassicaceae 8 counties
• 
  Brassica nigra (L.) W.D.J. Koch Introduced BRNI

  black mustard · Brassicaceae 63 counties
• 
  Brassica oleracea L. Introduced BROL

  cabbage · Brassicaceae 1 county
• 
  Brassica rapa L. Introduced BRRA

  field mustard · Brassicaceae 28 counties
• 
  Brassica rapa L. var. rapa Introduced BRRAR

  field mustard · Brassicaceae 28 counties
• 
  Briza maxima L. Introduced BRMA

  big quakinggrass · Poaceae 1 county