Balkan delphium 
Baneberry 
Barrenwort 
Berberis libanotica 
Berberis vulgaris 
Black Cohosh 
Blackspot Hornpoppy 
Bleeding Heart 
Bloodroot 
Blue Anemone 
Blue cohosh 
Bongardia 
Bracteate Oriental Poppy 
Broad-leaved Anemone 
Bulbous buttercup 
Bulbous Buttercup 
Bur buttercup 
California poppy 
Caltha polypetala 
Canada Anemone 
Canada anemone 
Canadian moonseed 
Canyon larkspur 
Carmel's Poppy