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 1,101–1,150 of 3,901.

• 
  Cyperus lupulinus (Spreng.) Marcks ssp. lupulinus Native CYLUL

  Great Plains flatsedge · Cyperaceae 1 county
• 
  Cyperus ochraceus Vahl Native CYOC2

  pond flatsedge · Cyperaceae 1 county
• 
  Cyperus odoratus L. Native CYOD

  fragrant flatsedge · Cyperaceae 11 counties
• 
  Cyperus polystachyos Rottb. Native CYPO

  manyspike flatsedge · Cyperaceae 1 county
• 
  Cyperus polystachyos Rottb. var. texensis (Torr.) Fernald Native CYPOT

  Texan flatsedge · Cyperaceae 1 county
• 
  Cyperus refractus Engelm. ex Boeckeler Native CYRE3

  reflexed flatsedge · Cyperaceae 3 counties
• 
  Cyperus retrorsus Chapm. Native CYRE5

  pine barren flatsedge · Cyperaceae 2 counties
• 
  Cyperus retrorsus Chapm. var. retrorsus Native CYRER2

  pine barren flatsedge · Cyperaceae 2 counties
• 
  Cyperus rotundus L. Introduced CYRO

  nutgrass · Cyperaceae 2 counties
• 
  Cyperus schweinitzii Torr. Native CYSC3

  Schweinitz's flatsedge · Cyperaceae 5 counties
• 
  Cyperus serotinus Rottb. Introduced CYSE5

  tidalmarsh flatsedge · Cyperaceae 1 county
• 
  Cyperus squarrosus L. Native CYSQ

  bearded flatsedge · Cyperaceae 20 counties
• 
  Cyperus strigosus L. Native CYST

  strawcolored flatsedge · Cyperaceae 64 counties
• 
  Cypripedium acaule Aiton Native CYAC3

  moccasin flower · Orchidaceae 61 counties
• 
  Cypripedium candidum Muhl. ex Willd. Native CYCA5

  white lady's slipper · Orchidaceae 2 counties
• 
  Cypripedium parviflorum Salisb. Native CYPA19

  lesser yellow lady's slipper · Orchidaceae 53 counties
• 
  Cypripedium parviflorum Salisb. var. parviflorum Native CYPAP4

  lesser yellow lady's slipper · Orchidaceae 14 counties
• 
  Cypripedium parviflorum Salisb. var. pubescens (Willd.) Knight Native CYPAP3

  greater yellow lady's slipper · Orchidaceae 53 counties
• 
  Cypripedium reginae Walter Native CYRE6

  showy lady's slipper · Orchidaceae 14 counties
• 
  Cystopteris bulbifera (L.) Bernh. Native CYBU3

  bulblet bladderfern · Dryopteridaceae 41 counties
• 
  Cystopteris fragilis (L.) Bernh. Native CYFR2

  brittle bladderfern · Dryopteridaceae 31 counties
• 
  Cystopteris protrusa (Weath.) Blasdell Native CYPR4

  lowland bladderfern · Dryopteridaceae 30 counties
• 
  Cystopteris tenuis (Michx.) Desv. Native CYTE7

  upland brittle bladderfern · Dryopteridaceae 65 counties
• 
  Cytisus scoparius (L.) Link Introduced CYSC4

  Scotch broom · Fabaceae 10 counties
• 
  Cytisus scoparius (L.) Link var. scoparius Introduced CYSCS2

  Scotch broom · Fabaceae 10 counties
• 
  Dactylis glomerata L. Introduced DAGL

  orchardgrass · Poaceae 66 counties
• 
  Dactylis glomerata L. ssp. glomerata Introduced DAGLG

  orchardgrass · Poaceae 66 counties
• 
  Dactyloctenium aegyptium (L.) Willd. Introduced DAAE

  Egyptian grass · Poaceae 2 counties
• 
  Dactylorhiza viridis (L.) R.M. Bateman, A.M. Pridgeon & M.W. Chase Native DAVI6

  longbract frog orchid · Orchidaceae 18 counties
• 
  Dalibarda repens L. Native DARE

  robin runaway · Rosaceae 36 counties
• 
  Danthonia compressa Austin Native DACO

  flattened oatgrass · Poaceae 55 counties
• 
  Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. Native DASP2

  poverty oatgrass · Poaceae 66 counties
• 
  Dasiphora fruticosa (L.) Rydb. Native DAFR6

  shrubby cinquefoil · Rosaceae 2 counties
• 
  Dasiphora fruticosa (L.) Rydb. ssp. floribunda (Pursh) Kartesz Native DAFRF

  shrubby cinquefoil · Rosaceae 2 counties
• 
  Dasypyrum villosum (L.) Coss. & Durieu ex P. Candargy Introduced DAVI2

  mosquitograss · Poaceae 1 county
• 
  Datura quercifolia Kunth Native DAQU

  Chinese thorn-apple · Solanaceae 1 county
• 
  Datura stramonium L. Introduced DAST

  jimsonweed · Solanaceae 36 counties
• 
  Datura wrightii Regel Native DAWR2

  sacred thorn-apple · Solanaceae 8 counties
• 
  Daucus carota L. Introduced DACA6

  Queen Anne's lace · Apiaceae 67 counties
• 
  Decodon verticillatus (L.) Elliott Native DEVE

  swamp loosestrife · Lythraceae 20 counties
• 
  Delphinium exaltatum Aiton Native DEEX

  tall larkspur · Ranunculaceae 7 counties
• 
  Delphinium tricorne Michx. Native DETR

  dwarf larkspur · Ranunculaceae 13 counties
• 
  Dennstaedtia punctilobula (Michx.) T. Moore Native DEPU2

  eastern hayscented fern · Dennstaedtiaceae 67 counties
• 
  Deparia acrostichoides (Sw.) M. Kato Native DEAC4

  silver false spleenwort · Dryopteridaceae 65 counties
• 
  Deschampsia cespitosa (L.) P. Beauv. Native DECE

  tufted hairgrass · Poaceae 16 counties
• 
  Deschampsia flexuosa (L.) Trin. Native DEFL

  wavy hairgrass · Poaceae 33 counties
• 
  Deschampsia flexuosa (L.) Trin. var. flexuosa Native DEFLF

  wavy hairgrass · Poaceae 33 counties
• 
  Descurainia pinnata (Walter) Britton Native DEPI

  western tansymustard · Brassicaceae 2 counties
• 
  Descurainia pinnata (Walter) Britton ssp. brachycarpa (Richardson) Detling Native DEPIB

  western tansymustard · Brassicaceae 2 counties
• 
  Descurainia sophia (L.) Webb ex Prantl Introduced DESO2

  herb sophia · Brassicaceae 7 counties