United States, Rhode Island, Washington, Richmond, Frying Pan Pond, Wood River, 0.75 miles north-northwest of dam on Arcadia Road.
41.54914 -71.70397 WGS84
Shallow pond/marsh, water around 0.5 m deep, mucky substrate, growing with Pontederia cordata, Juncus militaris, Sparganium americanum, Sagittaria latifolia, Nymphaea odorata, Potamogeton epihydrus. Flowers purple-blue. Distribution list: BRU, NEBC, MIN