Pennsylvania

• Adams 42001
  1,101 taxa Open ↗
• Allegheny 42003
  1,943 taxa Open ↗
• Armstrong 42005
  1,126 taxa Open ↗
• Beaver 42007
  1,402 taxa Open ↗
• Bedford 42009
  1,989 taxa Open ↗
• Berks 42011
  2,115 taxa Open ↗
• Blair 42013
  1,613 taxa Open ↗
• Bradford 42015
  1,111 taxa Open ↗
• Bucks 42017
  2,298 taxa Open ↗
• Butler 42019
  1,422 taxa Open ↗

Showing 551–600 of 1,109 (introduced).

• 
  Lepidium graminifolium L. Introduced LEGR5

  grassleaf pepperweed · Brassicaceae 1 county
• 
  Lepidium heterophyllum Benth. Introduced LEHE2

  purpleanther field pepperweed · Brassicaceae 1 county
• 
  Lepidium perfoliatum L. Introduced LEPE2

  clasping pepperweed · Brassicaceae 3 counties
• 
  Lepidium ruderale L. Introduced LERU

  roadside pepperweed · Brassicaceae 1 county
• 
  Lepidium sativum L. Introduced LESA2

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

  shrub lespedeza · Fabaceae 4 counties
• 
  Lespedeza cuneata (Dum. Cours.) G. Don Introduced LECU

  sericea lespedeza · Fabaceae 18 counties
• 
  Lespedeza thunbergii (DC.) Nakai Introduced LETH4

  Thunberg's lespedeza · Fabaceae 3 counties
• 
  Leucanthemum vulgare Lam. Introduced LEVU

  oxeye daisy · Asteraceae 66 counties
• 
  Leucojum aestivum L. Introduced LEAE

  summer snowflake · Liliaceae 6 counties
• 
  Leucojum aestivum L. ssp. aestivum Introduced LEAEA

  summer snowflake · Liliaceae 6 counties
• 
  Levisticum officinale W.D.J. Koch Introduced LEOF

  garden lovage · Apiaceae 4 counties
• ⚘
  Ligustrum amurense Carrière Introduced LIAM

  Amur privet · Oleaceae 3 counties
• 
  Ligustrum obtusifolium Siebold & Zucc. Introduced LIOB

  border privet · Oleaceae 28 counties
• 
  Ligustrum ovalifolium Hassk. Introduced LIOV

  California privet · Oleaceae 10 counties
• 
  Ligustrum vulgare L. Introduced LIVU

  European privet · Oleaceae 27 counties
• 
  Lilium candidum L. Introduced LICA22

  Madonna lily · Liliaceae 2 counties
• 
  Lilium lancifolium Thunb. Introduced LILA8

  tiger lily · Liliaceae 18 counties
• 
  Linaria dalmatica (L.) Mill. Introduced LIDA

  Dalmatian toadflax · Scrophulariaceae 4 counties
• 
  Linaria dalmatica (L.) Mill. ssp. dalmatica Introduced LIDAD

  Dalmatian toadflax · Scrophulariaceae 4 counties
• 
  Linaria supina (L.) Chaz. Introduced LISU3

  lesser butter and eggs · Scrophulariaceae 1 county
• 
  Linaria vulgaris Mill. Introduced LIVU2

  butter and eggs · Scrophulariaceae 66 counties
• 
  Linum bienne Mill. Introduced LIBI5

  pale flax · Linaceae 6 counties
• 
  Linum catharticum L. Introduced LICA9

  fairy flax · Linaceae 1 county
• 
  Linum perenne L. Introduced LIPE2

  blue flax · Linaceae 6 counties
• 
  Linum usitatissimum L. Introduced LIUS

  common flax · Linaceae 23 counties
• 
  Lithospermum officinale L. Introduced LIOF

  European stoneseed · Boraginaceae 1 county
• 
  Lobelia chinensis Lour. Introduced LOCH4

  Chinese lobelia · Campanulaceae 2 counties
• 
  Lobelia erinus L. Introduced LOER

  edging lobelia · Campanulaceae 2 counties
• 
  Lobularia maritima (L.) Desv. Introduced LOMA

  sweet alyssum · Brassicaceae 8 counties
• 
  Logfia minima (Sm.) Dumort. Introduced LOMI4

  little cottonrose · Asteraceae 1 county
• 
  Lolium perenne L. Introduced LOPE

  perennial ryegrass · Poaceae 48 counties
• 
  Lolium perenne L. ssp. multiflorum (Lam.) Husnot Introduced LOPEM2

  Italian ryegrass · Poaceae 32 counties
• 
  Lolium temulentum L. Introduced LOTE2

  Darnel ryegrass · Poaceae 6 counties
• 
  Lolium temulentum L. ssp. temulentum Introduced LOTET

  Darnel ryegrass · Poaceae 6 counties
• 
  Lonicera fragrantissima Lindl. & Paxton Introduced LOFR

  sweet breath of spring · Caprifoliaceae 5 counties
• 
  Lonicera japonica Thunb. Introduced LOJA

  Japanese honeysuckle · Caprifoliaceae 37 counties
• 
  Lonicera maackii (Rupr.) Herder Introduced LOMA6

  Amur honeysuckle · Caprifoliaceae 12 counties
• 
  Lonicera morrowii A. Gray Introduced LOMO2

  Morrow's honeysuckle · Caprifoliaceae 42 counties
• ⚘
  Lonicera standishii Jacques Introduced LOST2

  Standish's honeysuckle · Caprifoliaceae 5 counties
• 
  Lonicera tatarica L. Introduced LOTA

  Tatarian honeysuckle · Caprifoliaceae 25 counties
• 
  Lonicera xylosteum L. Introduced LOXY

  dwarf honeysuckle · Caprifoliaceae 7 counties
• ⚘
  Lonicera ×bella Zabel [morrowii × tatarica] Introduced LOBE

  showy fly honeysuckle · Caprifoliaceae 10 counties
• 
  Lotus corniculatus L. Introduced LOCO6

  bird's-foot trefoil · Fabaceae 43 counties
• 
  Lotus corniculatus L. var. corniculatus Introduced LOCOC5

  bird's-foot trefoil · Fabaceae 43 counties
• 
  Ludwigia grandiflora (Michx.) Greuter & Burdet Introduced LUGR9

  large-flower primrose-willow · Onagraceae 3 counties
• 
  Ludwigia grandiflora (Michx.) Greuter & Burdet ssp. grandiflora Introduced LUGRG2

  large-flower primrose-willow · Onagraceae 3 counties
• 
  Lunaria annua L. Introduced LUAN

  annual honesty · Brassicaceae 14 counties
• 
  Lunaria rediviva L. Introduced LURE

  perennial honesty · Brassicaceae 2 counties
• 
  Luzula luzuloides (Lam.) Dandy & Wilmott Introduced LULU3

  oakforest woodrush · Juncaceae 1 county