United States, Wisconsin, Barron, Horseshoe Lake. Polk/Barron Counties [Barron Co. from Lat./Long.]
45.45093° N, 92.14143° W; T34N R14W sec07
Stagnant tannic (brown) water 0-2m deep. Common assoc.: (Utricularia vulgaris) common bladderwort, (Brasenia schreberi) watershield, (Nymphaea odorata) white water lily, (Lemna minor) small duckweed, (Spirodela polyrhiza) large duckweed,
Common in the east bays where it was found with other bladderwort species over thick organic muck.