Utricularia uliginosa is an affixed aquatic bladderwort native to northern and eastern Australia, as well as overseas in SE Asia. The species is named for its preference for wet habitats.
U. uliginosa has small blooms that are coloured bluish-purple. Oftentimes, only cleistogamous flowers are formed, which never open fully and are self-pollinating. The lower corolla lip has a helmet-like dome at the center which is lighter in colour, developing into shallow lobes at the edge. The upper corolla lip is small. the spur is broad at the base and steadily tapers to a point, forming an overall triangular shape. The leaves are commonly seen and grassy appearance. When they are fully submerged, the leaves can be quite long and thin, although when growing emersed they tend to be shorter and more oval in shape.
The species is commonly observed in shallow creeks from the NSW south coast all the way to Cape York, and also in nothern regions of NT and WA. It is often found growing in sandy shallows of the creeks. Flowering occurs seasonally during summer or the dry season, when the water level drops slightly to expose the plants to air.