B. laevis
# B. laevis

B. laevis may refer to:

* Balanus laevis, a barnacle species in the genus Balanus
* Barbichthys laevis, the sucker barb, a ray-finned fish species
* Bidens laevis, the bur-marigold or smooth beggartick, a flowering plant species native to the southern half of the United States
