Bartramia stricta
Bellis perennis
Daisy
Berula erecta
Lesser Water-parsnip
Beta vulgaris
Sea Beet
Betonica officinalis
Betony
Betula pendula
Silver Birch
Betula pubescens
Downy Birch
Bidens cernua
Nodding Bur-marigold
Bidens tripartita
Trifid Bur-marigold
Bismarckia nobilis
Bismarck Palm
Bistorta officinalis
Common Bistort
Blackstonia perfoliata
Yellow-wort
Blechnum spicant
Hard-fern
Blysmus compressus
Flat-sedge
Borago officinalis
Borage
Borago pygmaea
Slender Borage
Botrychium lunaria
Moonwort
Brachypodium sylvaticum
False-brome
Brachythecium rutabulum
Rough-stalked Feather-moss
Brassica napus
Oil-seed Rape
Brassica oleracea
Wild Cabbage
Breynia disticha
Snowbush
Briza maxima
Greater Quaking-grass
Bryonia dioica
White Bryony