Utricularia resupinata
A small amphibious bladderwort of sandy lake and pond shores, from eastern Canada and the eastern United States south to Florida and Central America. It grows in very shallow water or wet sand, with thread-like stems trapping tiny prey below the surface, and bears single lilac-purple flowers in late summer. Northern plants overwinter as turions, so the source of your stock decides whether it needs a cold winter.
Where it grows wild
Grows along the edges of wetlands, ponds, lakes and rivers, in water as little as 1 cm deep, and in moist sand, including new roadsides. It does best on sand covered by a thin layer of mud or muck, with much of the plant buried and its tiny leaves often hard to see. Stems are 5–30 cm long, on or just below the surface. In the north it flowers only in years when low water coincides with warm weather.
Recorded elevations are 0–500 m, median 18 m: a lowland and coastal-plain plant.
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