Utricularia gibba is a submersed aquatic herb; carnivorous; stems creeping, to 10 cm long, forming mats on bottom of shallow water-bodies.
Leaves alternate, scattered, about 0.5 cm long, forked once with a few bladders that entrap small invertebrates.
Flowers yellow, 0.6 cm, bilaterally symmetrical, corolla 2-lipped, with a thick, blunt spur-like appendage, on stalks 5-10 cm long; blooms June-Sept, rarely blooms in our region (Hough 1983).
Fruit a capsule.
Wetland status: OBL.
Frequency in NYC: Very infrequent.
Habitat: Shallow, nutrient-poor water.