(34)__Baptisia tinctoria, commonly known as wild indigo;

(35)__Barbarea orthoceras, commonly known as American winter-cress;

(36)__Bartonia paniculata, commonly known as screwstem;

(37)__Betula glandulosa, commonly known as tundra dwarf birch;

(38)__Betula x minor, commonly known as dwarf white birch;

(39)__Betula pumila, commonly known as swamp birch;

(40)__Bidens eatonii, commonly known as Eaton's bur- marigold;

(41)__Bidens hyperborea, commonly known as estuary bur-marigold;

(42)__Bolboschoenus x novae-angliae, commonly known as marsh bulrush;

(43)__Botrychium lunaria, commonly known as moonwort;

(44)__Bromus kalmii, commonly known as wild chess;

(45)__Bromus pubescens, commonly known as hairy wood brome-grass;

(46)__Calamagrostis cinnoides, commonly known as small reed-grass;

(47)__Calamagrostis pickeringii, commonly known as pickering's reed bent-grass;

(48)__Calamagrostis stricta ssp. inexpansa, commonly known as New England northern reed grass;

(49)__Calamagrostis stricta ssp. stricta, commonly known as neglected reed-grass;

(50)__Calystegia spithamaea, commonly known as upright bindweed;