B. gracilis

B. gracilis may refer to:


 * Bacteroides gracilis, a species of gram negative anaerobic bacterium
 * Barbilophozia gracilis, a liverwort species in the genus Barbilophozia
 * Bathysauropsis gracilis, the black lizardfish, a grinner
 * Belonolaimus gracilis, the pine sting nematode, a plant pathogenic nematode
 * Bletia gracilis, a species of orchid
 * Bolitoglossa gracilis, a species of salamander in the family Plethodontidae endemic to Costa Rica
 * Bomarea gracilis, a species of plant in the family Alstroemeriaceae endemic to Ecuador
 * Bouteloua gracilis, the blue grama, a long-lived, warm season, C4 perennial grass
 * Brunneria gracilis, a species of praying mantis found in Argentina, Brazil, Paraguay, Uruguay and Venezuela

Synonyms

 * Barosaurus gracilis, a synonym for Tornieria gracilis, a sauropod dinosaur from Late Jurassic Tanzania