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 3,001–3,050 of 3,901.

• 
  Ribes lacustre (Pers.) Poir. Native RILA

  prickly currant · Grossulariaceae 7 counties
• 
  Ribes missouriense Nutt. Native RIMI

  Missouri gooseberry · Grossulariaceae 4 counties
• 
  Ribes rotundifolium Michx. Native RIRO2

  Appalachian gooseberry · Grossulariaceae 48 counties
• 
  Ribes rubrum L. Introduced RIRU80

  cultivated currant · Grossulariaceae 37 counties
• 
  Ribes triste Pall. Native RITR

  red currant · Grossulariaceae 9 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
• 
  Richardia brasiliensis Gomes Native RIBR2

  tropical Mexican clover · Rubiaceae 1 county
• 
  Ricinus communis L. Introduced RICO3

  castorbean · Euphorbiaceae 4 counties
• 
  Robinia hispida L. Native ROHI

  bristly locust · Fabaceae 19 counties
• 
  Robinia pseudoacacia L. Native ROPS

  black locust · Fabaceae 61 counties
• 
  Robinia viscosa Vent. Native ROVI

  clammy locust · Fabaceae 15 counties
• 
  Robinia viscosa Vent. var. viscosa Native ROVIV

  clammy locust · Fabaceae 15 counties
• 
  Rorippa austriaca (Crantz) Besser Introduced ROAU

  Austrian yellowcress · Brassicaceae 3 counties
• 
  Rorippa palustris (L.) Besser Native ROPA2

  bog yellowcress · Brassicaceae 62 counties
• 
  Rorippa palustris (L.) Besser ssp. fernaldiana (Butters & Abbe) Jonsell Native ROPAF2

  Fernald's yellowcress · Brassicaceae 60 counties
• 
  Rorippa palustris (L.) Besser ssp. hispida (Desv.) Jonsell Native ROPAH

  hispid yellowcress · Brassicaceae 23 counties
• 
  Rorippa palustris (L.) Besser ssp. palustris Native ROPAP

  bog yellowcress · Brassicaceae 14 counties
• 
  Rorippa sylvestris (L.) Besser Introduced ROSY

  creeping yellowcress · Brassicaceae 45 counties
• 
  Rosa blanda Aiton Native ROBL

  smooth rose · Rosaceae 16 counties
• 
  Rosa blanda Aiton var. blanda Native ROBLB

  smooth rose · Rosaceae 16 counties
• 
  Rosa canina L. Introduced ROCA3

  dog rose · Rosaceae 20 counties
• 
  Rosa carolina L. Native ROCA4

  Carolina rose · Rosaceae 63 counties
• 
  Rosa carolina L. var. carolina Native ROCAC

  Carolina rose · Rosaceae 63 counties
• ⚘
  Rosa centifolia L. Introduced ROCE

  cabbage rose · Rosaceae 2 counties
• 
  Rosa cinnamomea L. Introduced ROCI

  cinnamon rose · Rosaceae 10 counties
• 
  Rosa gallica L. Introduced ROGA

  French rose · Rosaceae 10 counties
• 
  Rosa micrantha Borrer ex Sm. Introduced ROMI

  smallflower sweetbrier · Rosaceae 5 counties
• 
  Rosa multiflora Thunb. Introduced ROMU

  multiflora rose · Rosaceae 35 counties
• 
  Rosa palustris Marshall Native ROPA

  swamp rose · Rosaceae 52 counties
• 
  Rosa rubiginosa L. Introduced RORU82

  sweetbriar rose · Rosaceae 35 counties
• 
  Rosa rugosa Thunb. Introduced RORU

  rugosa rose · Rosaceae 5 counties
• 
  Rosa setigera Michx. Native ROSE2

  climbing rose · Rosaceae 10 counties
• 
  Rosa setigera Michx. var. tomentosa Torr. & A. Gray Native ROSET

  climbing rose · Rosaceae 9 counties
• 
  Rosa virginiana Mill. Native ROVI2

  Virginia rose · Rosaceae 17 counties
• 
  Rosa virginiana Mill. var. virginiana Native ROVIV2

  Virginia rose · Rosaceae 17 counties
• 
  Rosa wichuraiana Crép. Introduced ROWI

  memorial rose · Rosaceae 10 counties
• 
  Rostraria cristata (L.) Tzvelev Introduced ROCR3

  Mediterranean hairgrass · Poaceae 1 county
• 
  Rotala ramosior (L.) Koehne Native RORA

  lowland rotala · Lythraceae 8 counties
• 
  Rubia tinctorum L. Introduced RUTI2

  dyer's madder · Rubiaceae 1 county
• 
  Rubus allegheniensis Porter Native RUAL

  Allegheny blackberry · Rosaceae 63 counties
• 
  Rubus allegheniensis Porter var. allegheniensis Native RUALA

  Allegheny blackberry · Rosaceae 63 counties
• 
  Rubus armeniacus Focke Introduced RUAR9

  Himalayan blackberry · Rosaceae 2 counties
• 
  Rubus bifrons Vest ex Tratt. Introduced RUBI

  Himalayan berry · Rosaceae 1 county
• 
  Rubus canadensis L. Native RUCA16

  smooth blackberry · Rosaceae 23 counties
• 
  Rubus cuneifolius Pursh Native RUCU

  sand blackberry · Rosaceae 7 counties
• 
  Rubus flagellaris Willd. Native RUFL

  northern dewberry · Rosaceae 58 counties
• 
  Rubus hispidus L. Native RUHI

  bristly dewberry · Rosaceae 61 counties
• 
  Rubus idaeus L. Both RUID

  American red raspberry · Rosaceae 45 counties
• 
  Rubus idaeus L. ssp. idaeus Introduced RUIDI

  American red raspberry · Rosaceae 1 county