1. Resembling waves in form or outline or motion
   - undulant

See also: undulation

• genus Bessera
• genus Besseya
• genus Beta
• genus Bettongia
• genus Betula
• genus Bibos
• genus Bidens
• genus Bignonia
• genus Biscutella
• genus Bison
• genus Bitis
• genus Blaberus
• genus Blandfordia
• genus Blarina
• genus Blastocladia
• genus Blastomyces
• genus Blatta
• genus Blattella
• genus Blechnum
• genus Blennius
• genus Blephilia
• genus Bletia
• genus Bletilla
• genus Blighia
• genus Blissus