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 1,351–1,400 of 3,901.

• 
  Equisetum arvense L. Native EQAR

  field horsetail · Equisetaceae 67 counties
• 
  Equisetum fluviatile L. Native EQFL

  water horsetail · Equisetaceae 43 counties
• 
  Equisetum hyemale L. Native EQHY

  scouringrush horsetail · Equisetaceae 37 counties
• 
  Equisetum hyemale L. var. affine (Engelm.) A.A. Eaton Native EQHYA

  scouringrush horsetail · Equisetaceae 37 counties
• 
  Equisetum laevigatum A. Braun Native EQLA

  smooth horsetail · Equisetaceae 3 counties
• 
  Equisetum pratense Ehrh. Native EQPR

  meadow horsetail · Equisetaceae 1 county
• 
  Equisetum sylvaticum L. Native EQSY

  woodland horsetail · Equisetaceae 45 counties
• 
  Equisetum variegatum Schleich. ex F. Weber & D. Mohr Native EQVA

  variegated scouringrush · Equisetaceae 2 counties
• 
  Equisetum variegatum Schleich. ex F. Weber & D. Mohr var. variegatum Native EQVAV

  variegated scouringrush · Equisetaceae 2 counties
• ⚘
  Equisetum ×ferrissii Clute (pro sp.) [hyemale × laevigatum] Native EQFE

  Equisetaceae 10 counties
• ⚘
  Equisetum ×litorale Kühlewein ex Rupr. (pro sp.) [arvense × fluviatile] Native EQLI

  horsetail · Equisetaceae 18 counties
• 
  Eragrostis capillaris (L.) Nees Native ERCA

  lace grass · Poaceae 40 counties
• 
  Eragrostis cilianensis (All.) Vign. ex Janchen Introduced ERCI

  stinkgrass · Poaceae 44 counties
• 
  Eragrostis frankii C.A. Mey. ex Steud. Native ERFR

  sandbar lovegrass · Poaceae 33 counties
• 
  Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb. Native ERHY

  teal lovegrass · Poaceae 47 counties
• 
  Eragrostis minor Host Introduced ERMI5

  little lovegrass · Poaceae 31 counties
• 
  Eragrostis pectinacea (Michx.) Nees ex Steud. Native ERPE

  tufted lovegrass · Poaceae 62 counties
• 
  Eragrostis pectinacea (Michx.) Nees ex Steud. var. pectinacea Native ERPEP2

  tufted lovegrass · Poaceae 62 counties
• 
  Eragrostis pilosa (L.) P. Beauv. Introduced ERPI2

  Indian lovegrass · Poaceae 25 counties
• 
  Eragrostis spectabilis (Pursh) Steud. Native ERSP

  purple lovegrass · Poaceae 32 counties
• 
  Eranthis hyemalis (L.) Salisb. Introduced ERHY4

  winter aconite · Ranunculaceae 3 counties
• 
  Erechtites hieraciifolius (L.) Raf. ex DC. Native ERHI12

  American burnweed · Asteraceae 65 counties
• 
  Erechtites hieraciifolius (L.) Raf. ex DC. var. hieraciifolius Native ERHIH2

  American burnweed · Asteraceae 65 counties
• 
  Erica vagans L. Introduced ERVA2

  Cornish heath · Ericaceae 1 county
• 
  Erigenia bulbosa (Michx.) Nutt. Native ERBU

  harbinger of spring · Apiaceae 10 counties
• 
  Erigeron annuus (L.) Pers. Native ERAN

  eastern daisy fleabane · Asteraceae 63 counties
• 
  Erigeron philadelphicus L. Native ERPH

  Philadelphia fleabane · Asteraceae 61 counties
• 
  Erigeron philadelphicus L. var. philadelphicus Native ERPHP

  Philadelphia fleabane · Asteraceae 61 counties
• 
  Erigeron pulchellus Michx. Native ERPU

  robin's plantain · Asteraceae 53 counties
• 
  Erigeron pulchellus Michx. var. pulchellus Native ERPUP

  robin's plantain · Asteraceae 53 counties
• 
  Erigeron strigosus Muhl. ex Willd. Native ERST3

  prairie fleabane · Asteraceae 66 counties
• 
  Erigeron strigosus Muhl. ex Willd. var. beyrichii (Fisch. & C.A. Mey.) Torr. & A. Gray ex A. Gray Native ERSTB

  Beyrich's fleabane · Asteraceae 5 counties
• 
  Erigeron strigosus Muhl. ex Willd. var. strigosus Native ERSTS2

  prairie fleabane · Asteraceae 66 counties
• 
  Eriocaulon aquaticum (Hill) Druce Native ERAQ2

  sevenangle pipewort · Eriocaulaceae 12 counties
• 
  Eriocaulon decangulare L. Native ERDE5

  tenangle pipewort · Eriocaulaceae 1 county
• 
  Eriocaulon decangulare L. var. decangulare Native ERDED2

  tenangle pipewort · Eriocaulaceae 1 county
• 
  Eriocaulon parkeri B.L. Rob. Native ERPA4

  estuary pipewort · Eriocaulaceae 3 counties
• 
  Eriochloa villosa (Thunb.) Kunth Introduced ERVI3

  hairy cupgrass · Poaceae 1 county
• 
  Eriophorum gracile W.D.J. Koch Native ERGR8

  slender cottongrass · Cyperaceae 12 counties
• 
  Eriophorum gracile W.D.J. Koch var. gracile Native ERGRG2

  slender cottongrass · Cyperaceae 12 counties
• 
  Eriophorum tenellum Nutt. Native ERTE12

  fewnerved cottongrass · Cyperaceae 13 counties
• 
  Eriophorum vaginatum L. Native ERVA4

  tussock cottongrass · Cyperaceae 12 counties
• 
  Eriophorum vaginatum L. var. spissum (Fernald) B. Boivin Native ERVAS

  tussock cottongrass · Cyperaceae 12 counties
• 
  Eriophorum virginicum L. Native ERVI8

  tawny cottongrass · Cyperaceae 48 counties
• 
  Eriophorum viridicarinatum (Engelm.) Fernald Native ERVI9

  thinleaf cottonsedge · Cyperaceae 6 counties
• 
  Erodium cicutarium (L.) L'Hér. ex Aiton Introduced ERCI6

  redstem stork's bill · Geraniaceae 16 counties
• 
  Erodium cicutarium (L.) L'Hér. ex Aiton ssp. cicutarium Introduced ERCIC

  redstem stork's bill · Geraniaceae 16 counties
• 
  Erodium moschatum (L.) L'Hér. ex Aiton Introduced ERMO7

  musky stork's bill · Geraniaceae 2 counties
• 
  Erodium moschatum (L.) L'Hér. ex Aiton var. moschatum Introduced ERMOM

  musky stork's bill · Geraniaceae 2 counties
• 
  Eruca vesicaria (L.) Cav. Introduced ERVE5

  rocketsalad · Brassicaceae 2 counties