Ball python 
Ball seaweed 
Ballast Toadflax 
Ballhead waterleaf 
Ballida brahamae 
Balloon vine 
Balloon-pod milk-vetch 
Ballota philistaea 
Ballota rotundifolia 
Ballota saxatilis 
Balsa Tree 
Balsam fir 
Balsam Poplar 
Balsam Spurge 
Balsamorhiza hookeri 
Balta notulata 
Balta spuria 
Baltic Isopod 
Baltic prawn 
Baltic rush 
Baltimore Checkerspot 
Baltimore Hypena 
Baltimore Oriole 
Bamboo antshrike