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 201–250 of 2,748 (native).

• 
  Asclepias incarnata L. Native ASIN

  swamp milkweed · Asclepiadaceae 62 counties
• 
  Asclepias incarnata L. ssp. incarnata Native ASINI

  swamp milkweed · Asclepiadaceae 61 counties
• 
  Asclepias incarnata L. ssp. pulchra (Ehrh. ex Willd.) Woodson Native ASINP2

  swamp milkweed · Asclepiadaceae 10 counties
• 
  Asclepias purpurascens L. Native ASPU2

  purple milkweed · Asclepiadaceae 22 counties
• 
  Asclepias quadrifolia Jacq. Native ASQU

  fourleaf milkweed · Asclepiadaceae 55 counties
• 
  Asclepias rubra L. Native ASRU

  red milkweed · Asclepiadaceae 4 counties
• 
  Asclepias syriaca L. Native ASSY

  common milkweed · Asclepiadaceae 65 counties
• 
  Asclepias tuberosa L. Native ASTU

  butterfly milkweed · Asclepiadaceae 52 counties
• 
  Asclepias tuberosa L. ssp. tuberosa Native ASTUT2

  butterfly milkweed · Asclepiadaceae 1 county
• 
  Asclepias variegata L. Native ASVA

  redring milkweed · Asclepiadaceae 12 counties
• 
  Asclepias verticillata L. Native ASVE

  whorled milkweed · Asclepiadaceae 20 counties
• 
  Asclepias viridiflora Raf. Native ASVI

  green comet milkweed · Asclepiadaceae 28 counties
• 
  Asimina triloba (L.) Dunal Native ASTR

  pawpaw · Annonaceae 32 counties
• 
  Asplenium bradleyi D.C. Eaton Native ASBR2

  Bradley's spleenwort · Aspleniaceae 6 counties
• 
  Asplenium montanum Willd. Native ASMO2

  mountain spleenwort · Aspleniaceae 27 counties
• 
  Asplenium pinnatifidum Nutt. Native ASPI

  lobed spleenwort · Aspleniaceae 14 counties
• 
  Asplenium platyneuron (L.) Britton, Sterns & Poggenb. Native ASPL

  ebony spleenwort · Aspleniaceae 64 counties
• 
  Asplenium platyneuron (L.) Britton, Sterns & Poggenb. var. platyneuron Native ASPLP

  ebony spleenwort · Aspleniaceae 64 counties
• 
  Asplenium resiliens Kunze Native ASRE

  blackstem spleenwort · Aspleniaceae 3 counties
• 
  Asplenium rhizophyllum L. Native ASRH2

  walking fern · Aspleniaceae 60 counties
• 
  Asplenium ruta-muraria L. Native ASRU2

  wallrue · Aspleniaceae 26 counties
• 
  Asplenium ruta-muraria L. var. cryptolepis (Fernald) Wherry Native ASRUC

  wallrue · Aspleniaceae 2 counties
• 
  Asplenium trichomanes L. Native ASTR2

  maidenhair spleenwort · Aspleniaceae 57 counties
• 
  Asplenium ×ebenoides R.R. Scott (pro sp.) [platyneuron × rhizophyllum] Native ASEB

  spleenwort · Aspleniaceae 17 counties
• ⚘
  Asplenium ×gravesii Maxon (pro sp.) [bradleyi × pinnatifidum] Native ASGR5

  spleenwort · Aspleniaceae 2 counties
• ⚘
  Asplenium ×trudellii Wherry (pro sp.) [montanum × pinnatifidum] Native ASTR11

  spleenwort · Aspleniaceae 5 counties
• 
  Astragalus canadensis L. Native ASCA11

  Canadian milkvetch · Fabaceae 13 counties
• 
  Astragalus canadensis L. var. canadensis Native ASCAC6

  Canadian milkvetch · Fabaceae 13 counties
• 
  Astragalus neglectus (Torr. & A. Gray) Sheldon Native ASNE2

  Cooper's milkvetch · Fabaceae 2 counties
• 
  Athyrium filix-femina (L.) Roth Native ATFI

  common ladyfern · Dryopteridaceae 67 counties
• 
  Athyrium filix-femina (L.) Roth ssp. angustum (Willd.) R.T. Clausen Native ATFIA

  subarctic ladyfern · Dryopteridaceae 67 counties
• 
  Athyrium filix-femina (L.) Roth ssp. asplenioides (Michx.) Hultén Native ATFIA2

  asplenium ladyfern · Dryopteridaceae 49 counties
• 
  Atriplex cristata Humb. & Bonpl. ex Willd. Native ATCR2

  crested saltbush · Chenopodiaceae 2 counties
• 
  Atriplex prostrata Bouchér ex DC. Native ATPR

  triangle orache · Chenopodiaceae 40 counties
• 
  Aureolaria flava (L.) Farw. Native AUFL

  smooth yellow false foxglove · Scrophulariaceae 34 counties
• 
  Aureolaria flava (L.) Farw. var. flava Native AUFLF

  smooth yellow false foxglove · Scrophulariaceae 33 counties
• 
  Aureolaria flava (L.) Farw. var. macrantha Pennell Native AUFLM

  smooth yellow false foxglove · Scrophulariaceae 3 counties
• 
  Aureolaria laevigata (Raf.) Raf. Native AULA

  entireleaf yellow false foxglove · Scrophulariaceae 21 counties
• 
  Aureolaria pedicularia (L.) Raf. Native AUPE2

  fernleaf yellow false foxglove · Scrophulariaceae 38 counties
• 
  Aureolaria virginica (L.) Pennell Native AUVI

  downy yellow false foxglove · Scrophulariaceae 53 counties
• 
  Baccharis halimifolia L. Native BAHA

  eastern baccharis · Asteraceae 7 counties
• 
  Baptisia australis (L.) R. Br. Native BAAU

  blue wild indigo · Fabaceae 11 counties
• 
  Baptisia australis (L.) R. Br. var. australis Native BAAUA

  blue wild indigo · Fabaceae 11 counties
• 
  Baptisia tinctoria (L.) R. Br. Native BATI

  horseflyweed · Fabaceae 57 counties
• 
  Bartonia paniculata (Michx.) Muhl. Native BAPA2

  twining screwstem · Gentianaceae 12 counties
• 
  Bartonia paniculata (Michx.) Muhl. ssp. paniculata Native BAPAP

  twining screwstem · Gentianaceae 12 counties
• 
  Bartonia virginica (L.) Britton, Sterns & Poggenb. Native BAVI3

  yellow screwstem · Gentianaceae 43 counties
• 
  Beckmannia syzigachne (Steud.) Fernald Native BESY

  American sloughgrass · Poaceae 1 county
• 
  Berberis canadensis Mill. Native BECA2

  American barberry · Berberidaceae 1 county
• 
  Betula alleghaniensis Britton Native BEAL2

  yellow birch · Betulaceae 55 counties