A spur extends from the lower lip. It may be longer than the lip or just be a short bagging. The palate is often equipped with guidelines used by insects for orientation about how to enter the flower. The calyx is two- or five-lobed. The fruit is a unicellular capsule with lots of seeds, which are spread with wind or water. The flowers sit solely or in racemes, which are often very long relative to the size of the plant. In aquatic species, the flower stalk is raised above the water level.
The Brazilian Utricularia reniformis is a swamp plant pollinated by bumblebees. Nectar is shown present in the spur. The long flower shaft causes large spatial separation between flowers and traps but it has not the same importance for preventing insects from becoming prey as in Cephalotus follicularis. However, the long shaft will make the flowers more visible for pollinators.