Common Name:
SMALL PURPLE BLADDERWORT
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Coefficient of Conservatism:
10
Coefficient of Wetness:
-5
Wetness Index:
OBL
Physiognomy:
Nt P-Forb
A. A. Reznicek
Flowering in shallow water and on wet or recently exposed sandy, peaty, or marly shores of lakes and ponds; often forming extensive vegetative mats in deeper water. Usually (but not always) blooms when water levels are low and temperatures are high. Sometimes forms pink carpets or bands at the sandy-peaty edges or bottoms of a small receding lake.
This species may grow with U. cornuta around the edges of softwater lakes and in years of higher water both exist as carpets of dense leaves and stems, buried except for the green tips of leaves that rise above the substrate. Fragments of such vegetative mats often break loose and drift about. Young leaves can be distinguished from those of other small bottom-living aquatics by their inrolled tips. Mature leaves may be as long as 7.5 cm. Apparently U. resupinata rather consistently bears two rootlet-like branches from the horizontal stem at each leaf-bearing node, while in U. cornuta the leaf-bearing nodes produce 0–4 branches.