Maine

• Androscoggin 23001
  1,123 taxa Open ↗
• Aroostook 23003
  1,191 taxa Open ↗
• Cumberland 23005
  1,446 taxa Open ↗
• Franklin 23007
  1,146 taxa Open ↗
• Hancock 23009
  1,195 taxa Open ↗
• Kennebec 23011
  1,233 taxa Open ↗
• Knox 23013
  1,348 taxa Open ↗
• Lincoln 23015
  982 taxa Open ↗
• Oxford 23017
  1,328 taxa Open ↗
• Penobscot 23019
  1,403 taxa Open ↗

Showing 201–250 of 2,313.

• 
  Atriplex glabriuscula Edmondston Native ATGL

  Scotland orache · Chenopodiaceae 7 counties
• 
  Atriplex patula L. Introduced ATPA4

  spear saltbush · Chenopodiaceae 10 counties
• 
  Atriplex prostrata Bouchér ex DC. Native ATPR

  triangle orache · Chenopodiaceae 11 counties
• 
  Aureolaria flava (L.) Farw. Native AUFL

  smooth yellow false foxglove · Scrophulariaceae 8 counties
• 
  Aureolaria flava (L.) Farw. var. flava Native AUFLF

  smooth yellow false foxglove · Scrophulariaceae 8 counties
• 
  Aureolaria pedicularia (L.) Raf. Native AUPE2

  fernleaf yellow false foxglove · Scrophulariaceae 6 counties
• 
  Aureolaria pedicularia (L.) Raf. var. pedicularia Native AUPEP

  fernleaf yellow false foxglove · Scrophulariaceae 6 counties
• 
  Avena fatua L. Introduced AVFA

  wild oat · Poaceae 2 counties
• 
  Avena sativa L. Introduced AVSA

  common oat · Poaceae 11 counties
• 
  Axyris amaranthoides L. Introduced AXAM

  Russian pigweed · Chenopodiaceae 2 counties
• 
  Baptisia tinctoria (L.) R. Br. Native BATI

  horseflyweed · Fabaceae 1 county
• 
  Barbarea orthoceras Ledeb. Native BAOR

  American yellowrocket · Brassicaceae 1 county
• 
  Barbarea verna (Mill.) Asch. Introduced BAVE

  early yellowrocket · Brassicaceae 2 counties
• 
  Barbarea vulgaris W.T. Aiton Introduced BAVU

  garden yellowrocket · Brassicaceae 15 counties
• 
  Bartonia paniculata (Michx.) Muhl. Native BAPA2

  twining screwstem · Gentianaceae 3 counties
• 
  Bartonia virginica (L.) Britton, Sterns & Poggenb. Native BAVI3

  yellow screwstem · Gentianaceae 7 counties
• 
  Bassia hyssopifolia (Pall.) Kuntz Introduced BAHY

  fivehorn smotherweed · Chenopodiaceae 2 counties
• 
  Bassia scoparia (L.) A.J. Scott Introduced BASC5

  burningbush · Chenopodiaceae 3 counties
• 
  Beckmannia syzigachne (Steud.) Fernald Native BESY

  American sloughgrass · Poaceae 1 county
• 
  Bellis perennis L. Introduced BEPE2

  lawndaisy · Asteraceae 3 counties
• 
  Berberis thunbergii DC. Introduced BETH

  Japanese barberry · Berberidaceae 7 counties
• 
  Berberis vulgaris L. Introduced BEVU

  common barberry · Berberidaceae 11 counties
• 
  Berteroa incana (L.) DC. Introduced BEIN2

  hoary alyssum · Brassicaceae 10 counties
• 
  Beta vulgaris L. Introduced BEVU2

  common beet · Chenopodiaceae 1 county
• 
  Betula alleghaniensis Britton Native BEAL2

  yellow birch · Betulaceae 15 counties
• 
  Betula lenta L. Native BELE

  sweet birch · Betulaceae 5 counties
• 
  Betula nana L. Native BENA

  dwarf birch · Betulaceae 1 county
• 
  Betula papyrifera Marshall Native BEPA

  paper birch · Betulaceae 16 counties
• 
  Betula papyrifera Marshall var. cordifolia (Regel) Fernald Native BEPAC2

  mountain paper birch · Betulaceae 5 counties
• 
  Betula pendula Roth Introduced BEPE3

  European white birch · Betulaceae 3 counties
• 
  Betula populifolia Marshall Native BEPO

  gray birch · Betulaceae 16 counties
• 
  Betula pumila L. Native BEPU4

  bog birch · Betulaceae 4 counties
• ⚘
  Betula ×caerulea Blanch. (pro sp.) [populifolia × papyrifera var. cordifolia] Native BECA4

  blue birch · Betulaceae 11 counties
• 
  Bidens aristosa (Michx.) Britton Native BIAR

  bearded beggarticks · Asteraceae 1 county
• 
  Bidens beckii Torr. ex Spreng. Native BIBE2

  Beck's water-marigold · Asteraceae 11 counties
• 
  Bidens cernua L. Native BICE

  nodding beggartick · Asteraceae 16 counties
• 
  Bidens discoidea (Torr. & A. Gray) Britton Native BIDI

  small beggarticks · Asteraceae 1 county
• 
  Bidens eatonii Fernald Native BIEA

  Eaton's beggarticks · Asteraceae 4 counties
• 
  Bidens frondosa L. Native BIFR

  devil's beggartick · Asteraceae 16 counties
• 
  Bidens hyperborea Greene Native BIHY

  estuary beggarticks · Asteraceae 7 counties
• 
  Bidens tripartita L. Native BITR

  threelobe beggarticks · Asteraceae 13 counties
• 
  Boehmeria cylindrica (L.) Sw. Native BOCY

  smallspike false nettle · Urticaceae 11 counties
• 
  Bolboschoenus fluviatilis (Torr.) Soják Native BOFL3

  river bulrush · Cyperaceae 5 counties
• 
  Bolboschoenus maritimus (L.) Palla Native BOMA7

  cosmopolitan bulrush · Cyperaceae 9 counties
• 
  Boltonia asteroides (L.) L'Hér. Native BOAS

  white doll's daisy · Asteraceae 1 county
• 
  Borago officinalis L. Introduced BOOF

  common borage · Boraginaceae 1 county
• 
  Botrychium dissectum Spreng. Native BODI2

  cutleaf grapefern · Ophioglossaceae 14 counties
• 
  Botrychium lanceolatum (S.G. Gmel.) Angstr. Native BOLA

  lanceleaf grapefern · Ophioglossaceae 9 counties
• 
  Botrychium lanceolatum (S.G. Gmel.) Angstr. var. angustisegmentum Pease & A.H. Moore Native BOLAA2

  lanceleaf grapefern · Ophioglossaceae 9 counties
• 
  Botrychium matricariifolium (A. Braun ex Dowell) A. Braun ex W.D.J. Koch Native BOMA2

  matricary grapefern · Ophioglossaceae 13 counties