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 101–150 of 1,109 (introduced).

• 
  Atriplex patula L. Introduced ATPA4

  spear saltbush · Chenopodiaceae 24 counties
• 
  Atriplex rosea L. Introduced ATRO

  tumbling saltweed · Chenopodiaceae 1 county
• 
  Atriplex tatarica L. Introduced ATTA

  Tatarian orache · Chenopodiaceae 1 county
• 
  Avena fatua L. Introduced AVFA

  wild oat · Poaceae 16 counties
• 
  Avena sativa L. Introduced AVSA

  common oat · Poaceae 26 counties
• 
  Ballota nigra L. Introduced BANI

  black horehound · Lamiaceae 1 county
• 
  Ballota nigra L. var. nigra Introduced BANIN

  black horehound · Lamiaceae 1 county
• 
  Barbarea verna (Mill.) Asch. Introduced BAVE

  early yellowrocket · Brassicaceae 25 counties
• 
  Barbarea vulgaris W.T. Aiton Introduced BAVU

  garden yellowrocket · Brassicaceae 66 counties
• 
  Bassia hirsuta (L.) Asch. Introduced BAHI3

  hairy smotherweed · Chenopodiaceae 1 county
• 
  Bassia scoparia (L.) A.J. Scott Introduced BASC5

  burningbush · Chenopodiaceae 14 counties
• 
  Belamcanda chinensis (L.) DC. Introduced BECH

  blackberry lily · Iridaceae 18 counties
• 
  Bellis perennis L. Introduced BEPE2

  lawndaisy · Asteraceae 21 counties
• 
  Berberis thunbergii DC. Introduced BETH

  Japanese barberry · Berberidaceae 51 counties
• 
  Berberis vulgaris L. Introduced BEVU

  common barberry · Berberidaceae 26 counties
• 
  Berteroa incana (L.) DC. Introduced BEIN2

  hoary alyssum · Brassicaceae 18 counties
• 
  Beta vulgaris L. Introduced BEVU2

  common beet · Chenopodiaceae 5 counties
• 
  Betula pendula Roth Introduced BEPE3

  European white birch · Betulaceae 6 counties
• 
  Betula pubescens Ehrh. Introduced BEPU5

  downy birch · Betulaceae 13 counties
• 
  Betula pubescens Ehrh. ssp. pubescens Introduced BEPUP5

  downy birch · Betulaceae 13 counties
• 
  Bidens pilosa L. Introduced BIPI

  hairy beggarticks · Asteraceae 1 county
• 
  Borago officinalis L. Introduced BOOF

  common borage · Boraginaceae 4 counties
• 
  Brassica juncea (L.) Czern. Introduced BRJU

  brown mustard · Brassicaceae 37 counties
• 
  Brassica nigra (L.) W.D.J. Koch Introduced BRNI

  black mustard · Brassicaceae 39 counties
• 
  Brassica oleracea L. Introduced BROL

  cabbage · Brassicaceae 5 counties
• 
  Brassica rapa L. Introduced BRRA

  field mustard · Brassicaceae 27 counties
• 
  Brassica rapa L. var. rapa Introduced BRRAR

  field mustard · Brassicaceae 27 counties
• 
  Briza media L. Introduced BRME

  perennial quakinggrass · Poaceae 3 counties
• 
  Briza minor L. Introduced BRMI2

  little quakinggrass · Poaceae 1 county
• 
  Bromus arenarius Labill. Introduced BRAR3

  Australian brome · Poaceae 1 county
• 
  Bromus arvensis L. Introduced BRAR5

  field brome · Poaceae 42 counties
• 
  Bromus briziformis Fisch. & C.A. Mey. Introduced BRBR5

  rattlesnake brome · Poaceae 1 county
• 
  Bromus catharticus Vahl Introduced BRCA6

  rescuegrass · Poaceae 1 county
• 
  Bromus hordeaceus L. Introduced BRHO2

  soft brome · Poaceae 12 counties
• 
  Bromus hordeaceus L. ssp. hordeaceus Introduced BRHOH

  soft brome · Poaceae 12 counties
• 
  Bromus inermis Leyss. ssp. inermis Introduced BRINI

  smooth brome · Poaceae 44 counties
• 
  Bromus inermis Leyss. ssp. inermis var. inermis Introduced BRINI2

  smooth brome · Poaceae 1 county
• 
  Bromus racemosus L. Introduced BRRA2

  bald brome · Poaceae 56 counties
• 
  Bromus secalinus L. Introduced BRSE

  rye brome · Poaceae 35 counties
• 
  Bromus secalinus L. var. secalinus Introduced BRSES

  rye brome · Poaceae 35 counties
• 
  Bromus squarrosus L. Introduced BRSQ2

  corn brome · Poaceae 1 county
• 
  Bromus sterilis L. Introduced BRST2

  poverty brome · Poaceae 23 counties
• 
  Bromus tectorum L. Introduced BRTE

  cheatgrass · Poaceae 41 counties
• 
  Broussonetia papyrifera (L.) L'Hér. ex Vent. Introduced BRPA4

  paper mulberry · Moraceae 15 counties
• 
  Buddleja davidii Franch. Introduced BUDA2

  orange eye butterflybush · Buddlejaceae 14 counties
• 
  Buglossoides arvensis (L.) I.M. Johnst. Introduced BUAR3

  corn gromwell · Boraginaceae 40 counties
• 
  Bunias orientalis L. Introduced BUOR

  Turkish wartycabbage · Brassicaceae 2 counties
• 
  Bupleurum rotundifolium L. Introduced BURO

  hare's ear · Apiaceae 7 counties
• 
  Butomus umbellatus L. Introduced BUUM

  flowering rush · Butomaceae 1 county
• 
  Cakile maritima Scop. Introduced CAMA

  European searocket · Brassicaceae 2 counties