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 2,151–2,200 of 3,901.

• 
  Lycopodium dendroideum Michx. Native LYDE

  tree groundpine · Lycopodiaceae 58 counties
• 
  Lycopodium digitatum Dill. ex A. Braun Native LYDI3

  fan clubmoss · Lycopodiaceae 67 counties
• 
  Lycopodium hickeyi W.H. Wagner, Beitel & Moran Native LYHI2

  Pennsylvania clubmoss · Lycopodiaceae 8 counties
• 
  Lycopodium lagopus (Laest. ex Hartm.) Zinserl. ex Kuzen Native LYLA5

  one-cone clubmoss · Lycopodiaceae 9 counties
• 
  Lycopodium obscurum L. Native LYOB

  rare clubmoss · Lycopodiaceae 62 counties
• ⚘
  Lycopodium sabinifolium Willd. Native LYSA

  savinleaf groundpine · Lycopodiaceae 1 county
• 
  Lycopodium tristachyum Pursh Native LYTR

  deeproot clubmoss · Lycopodiaceae 52 counties
• ⚘
  Lycopodium ×habereri House [digitatum × tristachyum] Native LYHA2

  clubmoss · Lycopodiaceae 14 counties
• 
  Lycopus americanus Muhl. ex W.P.C. Barton Native LYAM

  American water horehound · Lamiaceae 67 counties
• 
  Lycopus europaeus L. Introduced LYEU

  gypsywort · Lamiaceae 6 counties
• 
  Lycopus rubellus Moench Native LYRU

  taperleaf water horehound · Lamiaceae 13 counties
• 
  Lycopus uniflorus Michx. Native LYUN

  northern bugleweed · Lamiaceae 64 counties
• 
  Lycopus uniflorus Michx. var. uniflorus Native LYUNU2

  northern bugleweed · Lamiaceae 64 counties
• 
  Lycopus virginicus L. Native LYVI4

  Virginia water horehound · Lamiaceae 63 counties
• ⚘
  Lycopus ×sherardii Steele (pro sp.) [uniflorus × virginicus] Native LYSH2

  waterhorehound · Lamiaceae 23 counties
• 
  Lygodium palmatum (Bernh.) Sw. Native LYPA3

  American climbing fern · Lygodiaceae 13 counties
• 
  Lyonia ligustrina (L.) DC. Native LYLI

  maleberry · Ericaceae 53 counties
• 
  Lyonia ligustrina (L.) DC. var. ligustrina Native LYLIL

  maleberry · Ericaceae 53 counties
• 
  Lyonia mariana (L.) D. Don Native LYMA2

  piedmont staggerbush · Ericaceae 7 counties
• 
  Lysimachia ciliata L. Native LYCI

  fringed loosestrife · Primulaceae 67 counties
• 
  Lysimachia clethroides Duby Introduced LYCL2

  gooseneck yellow loosestrife · Primulaceae 8 counties
• 
  Lysimachia hybrida Michx. Native LYHY

  lowland yellow loosestrife · Primulaceae 13 counties
• 
  Lysimachia lanceolata Walter Native LYLA

  lanceleaf loosestrife · Primulaceae 16 counties
• 
  Lysimachia nummularia L. Introduced LYNU

  creeping jenny · Primulaceae 56 counties
• 
  Lysimachia punctata L. Introduced LYPU2

  large yellow loosestrife · Primulaceae 8 counties
• 
  Lysimachia quadriflora Sims Native LYQU

  fourflower yellow loosestrife · Primulaceae 2 counties
• 
  Lysimachia quadrifolia L. Native LYQU2

  whorled yellow loosestrife · Primulaceae 66 counties
• 
  Lysimachia terrestris (L.) Britton, Sterns & Poggenb. Native LYTE2

  earth loosestrife · Primulaceae 61 counties
• 
  Lysimachia thyrsiflora L. Native LYTH2

  tufted loosestrife · Primulaceae 12 counties
• 
  Lysimachia vulgaris L. Introduced LYVU

  garden yellow loosestrife · Primulaceae 13 counties
• ⚘
  Lysimachia ×producta (A. Gray) Fernald (pro sp.) [quadrifolia × terrestris] Native LYPR

  yellow loosestrife · Primulaceae 24 counties
• 
  Lythrum alatum Pursh Native LYAL4

  winged lythrum · Lythraceae 13 counties
• 
  Lythrum alatum Pursh var. alatum Native LYALA4

  winged lythrum · Lythraceae 13 counties
• 
  Lythrum hyssopifolium L. Introduced LYHY3

  hyssop loosestrife · Lythraceae 2 counties
• 
  Lythrum salicaria L. Introduced LYSA2

  purple loosestrife · Lythraceae 36 counties
• 
  Lythrum virgatum L. Introduced LYVI3

  European wand loosestrife · Lythraceae 1 county
• 
  Macleaya cordata (Willd.) R. Br. Introduced MACO10

  plume poppy · Papaveraceae 9 counties
• 
  Maclura pomifera (Raf.) C.K. Schneid. Native MAPO

  Osage-orange · Moraceae 31 counties
• 
  Madia sativa Molina Native MASA

  coast tarweed · Asteraceae 1 county
• 
  Magnolia acuminata (L.) L. Native MAAC

  cucumber tree · Magnoliaceae 47 counties
• 
  Magnolia grandiflora L. Native MAGR4

  southern magnolia · Magnoliaceae 1 county
• 
  Magnolia macrophylla Michx. Native MAMA2

  bigleaf magnolia · Magnoliaceae 1 county
• 
  Magnolia tripetala (L.) L. Native MATR

  umbrella-tree · Magnoliaceae 13 counties
• 
  Magnolia virginiana L. Native MAVI2

  sweetbay · Magnoliaceae 10 counties
• 
  Mahonia repens (Lindl.) G. Don Native MARE11

  creeping barberry · Berberidaceae 1 county
• 
  Maianthemum canadense Desf. Native MACA4

  Canada mayflower · Liliaceae 65 counties
• 
  Maianthemum racemosum (L.) Link Native MARA7

  feathery false lily of the valley · Liliaceae 67 counties
• 
  Maianthemum racemosum (L.) Link ssp. racemosum Native MARAR

  feathery false lily of the valley · Liliaceae 67 counties
• 
  Maianthemum stellatum (L.) Link Native MAST4

  starry false lily of the valley · Liliaceae 19 counties
• 
  Maianthemum trifolium (L.) Sloboda Native MATR4

  threeleaf false lily of the valley · Liliaceae 14 counties