Black-spined Agave 
Black-striped leafy greenhood 
Bletia catenulata 
Bletia florida 
Blood flower 
Blotched Hyacinth-orchid 
Blue Corn-Lily 
Blue fairy orchid 
Blue flax-lily 
Blue Grass Lily 
Blue lady orchid 
Blue Lily 
Blue Pigroot 
Blue Plantain-Lily 
Blue Stars 
Blue vanda 
Blue-eyed grass 
Blue-eyed grass 
Blueberry Lily 
Blueberry Lily 
Blunt Point Lepanthes 
Boat-shaped Column Dendrobium 
Bog Crinum Lilly 
Bolivian aspidogyne