Barringtonia conoidea 
Barrio's frog 
Barrow's Bolete 
Barrows goldeneye 
Barsine cuneonotatus 
Barsine euprepia 
Barsine flavodiscalis 
Barsine lucibilis 
Barsine roseororatus 
Barsine rosistriata 
Barsine rubricostata 
Bartel's Dragonet 
Bartlett's Anthias 
Bartlett's tinamou 
Bartsia alpina 
Barylestis saaristoi 
Barylypa propugnator 
Bashful wakerobin 
Basil thyme 
Basil-Thyme 
Basin cryptantha 
Basin Tree Frog 
Basiprionota decempustulata 
Basket fern