| Bladderwort (n.) A genus (Utricularia) of aquatic or marshy plants, which usually bear numerous vesicles in the divisions of the leaves. These serve as traps for minute animals. See Ascidium. |
| Lentibulariaceae / family Lentibulariaceae / bladderwort family carnivorous aquatic or bog plants: genera Utricularia, Pinguicula, and Genlisea |
| bladderwort any of numerous aquatic carnivorous plants of the genus Utricularia some of whose leaves are modified as small urn-shaped bladders that trap minute aquatic animals |