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 801–850 of 1,109 (introduced).

• 
  Prunus avium (L.) L. Introduced PRAV

  sweet cherry · Rosaceae 49 counties
• 
  Prunus cerasifera Ehrh. Introduced PRCE2

  cherry plum · Rosaceae 2 counties
• 
  Prunus cerasus L. Introduced PRCE

  sour cherry · Rosaceae 13 counties
• 
  Prunus domestica L. Introduced PRDO

  European plum · Rosaceae 9 counties
• 
  Prunus domestica L. var. domestica Introduced PRDOD

  European plum · Rosaceae 5 counties
• 
  Prunus domestica L. var. insititia (L.) Fiori & Paoletti Introduced PRDOI

  European plum · Rosaceae 4 counties
• 
  Prunus mahaleb L. Introduced PRMA

  Mahaleb cherry · Rosaceae 8 counties
• 
  Prunus padus L. Introduced PRPA5

  European bird cherry · Rosaceae 7 counties
• 
  Prunus persica (L.) Batsch Introduced PRPE3

  peach · Rosaceae 30 counties
• 
  Prunus persica (L.) Batsch var. persica Introduced PRPEP2

  peach · Rosaceae 30 counties
• 
  Prunus triloba Lindl. Introduced PRTR3

  flowering plum · Rosaceae 1 county
• ⚘
  Pseudolysimachion longifolium (L.) Opiz Introduced PSLO6

  longleaf speedwell · Scrophulariaceae 16 counties
• 
  Pseudosasa japonica (Siebold & Zucc. ex Steud.) Makino ex Nakai Introduced PSJA

  arrow bamboo · Poaceae 4 counties
• 
  Puccinellia distans (Jacq.) Parl. ssp. distans Introduced PUDID

  weeping alkaligrass · Poaceae 12 counties
• 
  Puccinellia rupestris (With.) Fernald & Weath. Introduced PURU

  British alkaligrass · Poaceae 1 county
• 
  Pueraria montana (Lour.) Merr. Introduced PUMO

  kudzu · Fabaceae 18 counties
• 
  Pueraria montana (Lour.) Merr. var. lobata (Willd.) Maesen & S.M. Almeida ex Sanjappa & Predeep Introduced PUMOL

  kudzu · Fabaceae 11 counties
• 
  Pyracantha coccinea M. Roem. Introduced PYCO2

  scarlet firethorn · Rosaceae 2 counties
• 
  Pyrus calleryana Decne. Introduced PYCA80

  Callery pear · Rosaceae 2 counties
• 
  Pyrus communis L. Introduced PYCO

  common pear · Rosaceae 29 counties
• 
  Quercus acutissima Carruthers Introduced QUAC80

  sawtooth oak · Fagaceae 1 county
• 
  Quercus robur L. Introduced QURO2

  English oak · Fagaceae 9 counties
• 
  Ranunculus acris L. var. acris Introduced RAACA3

  showy buttercup · Ranunculaceae 61 counties
• 
  Ranunculus arvensis L. Introduced RAAR3

  corn buttercup · Ranunculaceae 1 county
• 
  Ranunculus bulbosus L. Introduced RABU

  St. Anthony's turnip · Ranunculaceae 36 counties
• 
  Ranunculus ficaria L. Introduced RAFI

  fig buttercup · Ranunculaceae 11 counties
• 
  Ranunculus ficaria L. var. bulbifera Marsden-Jones Introduced RAFIB

  fig buttercup · Ranunculaceae 10 counties
• 
  Ranunculus repens L. Introduced RARE3

  creeping buttercup · Ranunculaceae 49 counties
• 
  Ranunculus sardous Crantz Introduced RASA

  hairy buttercup · Ranunculaceae 3 counties
• 
  Raphanus raphanistrum L. Introduced RARA2

  wild radish · Brassicaceae 31 counties
• ⚘
  Raphanus sativus L. Introduced RASA2

  cultivated radish · Brassicaceae 35 counties
• 
  Rapistrum rugosum (L.) All. Introduced RARU

  annual bastardcabbage · Brassicaceae 2 counties
• 
  Reseda alba L. Introduced REAL

  white upright mignonette · Resedaceae 2 counties
• 
  Reseda lutea L. Introduced RELU

  yellow mignonette · Resedaceae 12 counties
• 
  Reseda luteola L. Introduced RELU2

  weld · Resedaceae 3 counties
• 
  Reseda odorata L. Introduced REOD

  garden mignonette · Resedaceae 2 counties
• 
  Reseda phyteuma L. Introduced REPH

  rampion mignonette · Resedaceae 1 county
• 
  Rhamnus cathartica L. Introduced RHCA3

  common buckthorn · Rhamnaceae 17 counties
• 
  Rhamnus davurica Pall. Introduced RHDA

  Dahurian buckthorn · Rhamnaceae 3 counties
• 
  Rhamnus davurica Pall. ssp. davurica Introduced RHDAD2

  Dahurian buckthorn · Rhamnaceae 3 counties
• 
  Rheum rhabarbarum L. Introduced RHRH2

  garden rhubarb · Polygonaceae 6 counties
• 
  Rhodotypos scandens (Thunb.) Makino Introduced RHSC3

  jetbead · Rosaceae 11 counties
• 
  Ribes rubrum L. Introduced RIRU80

  cultivated currant · Grossulariaceae 37 counties
• 
  Ribes uva-crispa L. Introduced RIUV80

  European gooseberry · Grossulariaceae 7 counties
• 
  Ribes uva-crispa L. var. sativum DC. Introduced RIUVS

  European gooseberry · Grossulariaceae 7 counties
• 
  Ricinus communis L. Introduced RICO3

  castorbean · Euphorbiaceae 4 counties
• 
  Rorippa austriaca (Crantz) Besser Introduced ROAU

  Austrian yellowcress · Brassicaceae 3 counties
• 
  Rorippa sylvestris (L.) Besser Introduced ROSY

  creeping yellowcress · Brassicaceae 45 counties
• 
  Rosa canina L. Introduced ROCA3

  dog rose · Rosaceae 20 counties
• ⚘
  Rosa centifolia L. Introduced ROCE

  cabbage rose · Rosaceae 2 counties