Carnivorous plant using tiny bladders (1 mm and less in diameter) to trap and ingest small aquatic insects. Flowers are yellow, 6 mm long and 2 mm wide, 1 to 4 flowers on stems rising 6.5 cm above the water. Leaves are tiny, thread-like on submerged stems. Bladders on their own stems, these stems having no leaves (similar to Utricularia intermedia).
Flowering time is end of June through July.
Rare, listed as an S2S3 by the Saskatchewan Conservation Data Centre.
The above photos were taken July 4th, in a marshy area of a fen, boreal forest, Duck Mountain Provincial Park, 300 km northeast of our home in Regina, SK