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 351–400 of 766 (introduced).

• 
  Lactuca serriola L. Introduced LASE

  prickly lettuce · Asteraceae 102 counties
• 
  Lagenaria siceraria (Molina) Standl. Introduced LASI

  bottle gourd · Cucurbitaceae 2 counties
• 
  Lamium amplexicaule L. Introduced LAAM

  henbit deadnettle · Lamiaceae 60 counties
• 
  Lamium maculatum L. Introduced LAMA

  spotted henbit · Lamiaceae 4 counties
• 
  Lamium purpureum L. Introduced LAPU2

  purple deadnettle · Lamiaceae 39 counties
• 
  Lamium purpureum L. var. purpureum Introduced LAPUP

  purple deadnettle · Lamiaceae 39 counties
• 
  Lappula squarrosa (Retz.) Dumort. Introduced LASQ

  European stickseed · Boraginaceae 31 counties
• 
  Lapsana communis L. Introduced LACO3

  common nipplewort · Asteraceae 5 counties
• 
  Larix decidua Mill. Introduced LADE2

  European larch · Pinaceae 3 counties
• 
  Lathyrus hirsutus L. Introduced LAHI2

  Caley pea · Fabaceae 4 counties
• 
  Lathyrus latifolius L. Introduced LALA4

  perennial pea · Fabaceae 37 counties
• 
  Lathyrus odoratus L. Introduced LAOD

  sweetpea · Fabaceae 2 counties
• 
  Lathyrus pratensis L. Introduced LAPR

  meadow pea · Fabaceae 1 county
• 
  Lathyrus tuberosus L. Introduced LATU

  tuberous sweetpea · Fabaceae 2 counties
• 
  Lecanora conizaeoides Nyl. ex Crombie Introduced LECO17

  rim lichen · Lecanoraceae 1 county
• 
  Leontodon autumnalis L. Introduced LEAU2

  fall dandelion · Asteraceae 2 counties
• 
  Leontodon autumnalis L. ssp. autumnalis Introduced LEAUA

  fall dandelion · Asteraceae 2 counties
• 
  Leontodon taraxacoides (Vill.) Mérat Introduced LETA

  lesser hawkbit · Asteraceae 1 county
• 
  Leontodon taraxacoides (Vill.) Mérat ssp. taraxacoides Introduced LETAT

  lesser hawkbit · Asteraceae 1 county
• 
  Leonurus cardiaca L. Introduced LECA2

  common motherwort · Lamiaceae 75 counties
• 
  Leonurus cardiaca L. ssp. cardiaca Introduced LECAC7

  common motherwort · Lamiaceae 75 counties
• 
  Lepidium campestre (L.) W.T. Aiton Introduced LECA5

  field pepperweed · Brassicaceae 83 counties
• 
  Lepidium perfoliatum L. Introduced LEPE2

  clasping pepperweed · Brassicaceae 10 counties
• 
  Lepidium ruderale L. Introduced LERU

  roadside pepperweed · Brassicaceae 2 counties
• 
  Lepidium sativum L. Introduced LESA2

  gardencress pepperweed · Brassicaceae 2 counties
• 
  Lespedeza bicolor Turcz. Introduced LEBI2

  shrub lespedeza · Fabaceae 2 counties
• 
  Lespedeza cuneata (Dum. Cours.) G. Don Introduced LECU

  sericea lespedeza · Fabaceae 41 counties
• 
  Lespedeza daurica (Laxm.) Schindl. Introduced LEDA3

  Dahurian lespedeza · Fabaceae 1 county
• 
  Lespedeza thunbergii (DC.) Nakai Introduced LETH4

  Thunberg's lespedeza · Fabaceae 4 counties
• 
  Leucanthemum vulgare Lam. Introduced LEVU

  oxeye daisy · Asteraceae 79 counties
• 
  Leucojum aestivum L. Introduced LEAE

  summer snowflake · Liliaceae 1 county
• 
  Leucojum aestivum L. ssp. aestivum Introduced LEAEA

  summer snowflake · Liliaceae 1 county
• 
  Leymus arenarius (L.) Hochst. Introduced LEAR11

  sand ryegrass · Poaceae 3 counties
• 
  Ligustrum obtusifolium Siebold & Zucc. Introduced LIOB

  border privet · Oleaceae 4 counties
• 
  Ligustrum vulgare L. Introduced LIVU

  European privet · Oleaceae 25 counties
• 
  Lilium lancifolium Thunb. Introduced LILA8

  tiger lily · Liliaceae 8 counties
• 
  Linaria dalmatica (L.) Mill. Introduced LIDA

  Dalmatian toadflax · Scrophulariaceae 8 counties
• 
  Linaria dalmatica (L.) Mill. ssp. dalmatica Introduced LIDAD

  Dalmatian toadflax · Scrophulariaceae 8 counties
• 
  Linaria vulgaris Mill. Introduced LIVU2

  butter and eggs · Scrophulariaceae 77 counties
• 
  Linum perenne L. Introduced LIPE2

  blue flax · Linaceae 3 counties
• 
  Linum usitatissimum L. Introduced LIUS

  common flax · Linaceae 24 counties
• 
  Liriope spicata (Thunb.) Lour. Introduced LISP10

  creeping liriope · Liliaceae 1 county
• 
  Lithospermum officinale L. Introduced LIOF

  European stoneseed · Boraginaceae 1 county
• 
  Lobularia maritima (L.) Desv. Introduced LOMA

  sweet alyssum · Brassicaceae 7 counties
• 
  Lolium perenne L. Introduced LOPE

  perennial ryegrass · Poaceae 78 counties
• 
  Lolium perenne L. ssp. multiflorum (Lam.) Husnot Introduced LOPEM2

  Italian ryegrass · Poaceae 36 counties
• 
  Lolium temulentum L. Introduced LOTE2

  Darnel ryegrass · Poaceae 3 counties
• 
  Lolium temulentum L. ssp. temulentum Introduced LOTET

  Darnel ryegrass · Poaceae 3 counties
• 
  Lonicera japonica Thunb. Introduced LOJA

  Japanese honeysuckle · Caprifoliaceae 51 counties
• 
  Lonicera maackii (Rupr.) Herder Introduced LOMA6

  Amur honeysuckle · Caprifoliaceae 15 counties