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 1–50 of 2,748 (native).

• 
  Abies balsamea (L.) Mill. Native ABBA

  balsam fir · Pinaceae 15 counties
• 
  Abies balsamea (L.) Mill. var. balsamea Native ABBAB

  balsam fir · Pinaceae 15 counties
• 
  Acalypha deamii (Weath.) H.E. Ahles Native ACDE4

  Deam's threeseed mercury · Euphorbiaceae 1 county
• 
  Acalypha gracilens A. Gray Native ACGR2

  slender threeseed mercury · Euphorbiaceae 16 counties
• 
  Acalypha rhomboidea Raf. Native ACRH

  common threeseed mercury · Euphorbiaceae 64 counties
• 
  Acalypha virginica L. Native ACVI

  Virginia threeseed mercury · Euphorbiaceae 33 counties
• 
  Acer negundo L. Native ACNE2

  boxelder · Aceraceae 54 counties
• 
  Acer negundo L. var. negundo Native ACNEN

  boxelder · Aceraceae 54 counties
• 
  Acer nigrum Michx. f. Native ACNI5

  black maple · Aceraceae 29 counties
• 
  Acer pensylvanicum L. Native ACPE

  striped maple · Aceraceae 51 counties
• 
  Acer rubrum L. Native ACRU

  red maple · Aceraceae 67 counties
• 
  Acer rubrum L. var. rubrum Native ACRUR

  red maple · Aceraceae 67 counties
• 
  Acer rubrum L. var. trilobum Torr. & A. Gray ex K. Koch Native ACRUT

  red maple · Aceraceae 41 counties
• 
  Acer saccharinum L. Native ACSA2

  silver maple · Aceraceae 57 counties
• 
  Acer saccharum Marshall Native ACSA3

  sugar maple · Aceraceae 66 counties
• 
  Acer saccharum Marshall var. saccharum Native ACSAS

  sugar maple · Aceraceae 66 counties
• 
  Acer spicatum Lam. Native ACSP2

  mountain maple · Aceraceae 62 counties
• 
  Achillea millefolium L. var. occidentalis DC. Native ACMIO

  western yarrow · Asteraceae 1 county
• 
  Aconitum reclinatum A. Gray Native ACRE

  trailing white monkshood · Ranunculaceae 2 counties
• 
  Aconitum uncinatum L. Native ACUN

  southern blue monkshood · Ranunculaceae 3 counties
• 
  Aconitum uncinatum L. ssp. muticum (DC.) Hardin Native ACUNM

  southern blue monkshood · Ranunculaceae 3 counties
• 
  Acorus americanus (Raf.) Raf. Native ACAM

  sweetflag · Acoraceae 3 counties
• 
  Actaea pachypoda Elliott Native ACPA

  white baneberry · Ranunculaceae 64 counties
• 
  Actaea podocarpa DC. Native ACPO11

  mountain bugbane · Ranunculaceae 7 counties
• 
  Actaea racemosa L. Native ACRA7

  black baneberry · Ranunculaceae 63 counties
• 
  Actaea racemosa L. var. racemosa Native ACRAR

  black bugbane · Ranunculaceae 63 counties
• 
  Actaea rubifolia (Kearney) Kartesz Native ACRU14

  Appalachian bugbane · Ranunculaceae 1 county
• 
  Actaea rubra (Aiton) Willd. Native ACRU2

  red baneberry · Ranunculaceae 17 counties
• 
  Actaea rubra (Aiton) Willd. ssp. rubra Native ACRUR2

  red baneberry · Ranunculaceae 17 counties
• 
  Adiantum aleuticum (Rupr.) Paris Native ADAL

  Aleutian maidenhair · Pteridaceae 1 county
• 
  Adiantum pedatum L. Native ADPE

  northern maidenhair · Pteridaceae 67 counties
• 
  Adlumia fungosa (Aiton) Greene ex Britton, Sterns & Poggenb. Native ADFU

  allegheny vine · Fumariaceae 41 counties
• 
  Aeschynomene virginica (L.) Britton, Sterns & Poggenb. Native AEVI3

  Virginia jointvetch · Fabaceae 2 counties
• 
  Aesculus flava Aiton Native AEFL

  yellow buckeye · Hippocastanaceae 15 counties
• 
  Aesculus glabra Willd. Native AEGL

  Ohio buckeye · Hippocastanaceae 17 counties
• 
  Aesculus glabra Willd. var. glabra Native AEGLG

  Ohio buckeye · Hippocastanaceae 17 counties
• 
  Aesculus parviflora Walter Native AEPA2

  bottlebrush buckeye · Hippocastanaceae 5 counties
• 
  Agalinis auriculata (Michx.) S.F. Blake Native AGAU3

  earleaf false foxglove · Scrophulariaceae 5 counties
• 
  Agalinis fasciculata (Elliott) Raf. Native AGFA2

  beach false foxglove · Scrophulariaceae 1 county
• 
  Agalinis obtusifolia Raf. Native AGOB

  tenlobe false foxglove · Scrophulariaceae 1 county
• ⚘
  Agalinis paupercula (A. Gray) Britton Native AGPA12

  smallflower false foxglove · Scrophulariaceae 7 counties
• 
  Agalinis purpurea (L.) Pennell Native AGPU5

  purple false foxglove · Scrophulariaceae 17 counties
• 
  Agalinis tenuifolia (Vahl) Raf. Native AGTE3

  slenderleaf false foxglove · Scrophulariaceae 43 counties
• 
  Agastache foeniculum (Pursh) Kuntze Native AGFO

  blue giant hyssop · Lamiaceae 4 counties
• 
  Agastache nepetoides (L.) Kuntze Native AGNE2

  yellow giant hyssop · Lamiaceae 30 counties
• 
  Agastache scrophulariifolia (Willd.) Kuntze Native AGSC

  purple giant hyssop · Lamiaceae 28 counties
• 
  Ageratina altissima (L.) R.M. King & H. Rob. Native AGAL5

  white snakeroot · Asteraceae 67 counties
• 
  Ageratina altissima (L.) R.M. King & H. Rob. var. altissima Native AGALA

  white snakeroot · Asteraceae 67 counties
• 
  Ageratina aromatica (L.) Spach Native AGAR4

  lesser snakeroot · Asteraceae 15 counties
• 
  Ageratina aromatica (L.) Spach var. aromatica Native AGARA

  lesser snakeroot · Asteraceae 15 counties