United States, Wisconsin, Walworth, Along edge of unnamed inlet stream feeding Lulu Lake; water cool, flowing, calcareous; bottom ? deep silt over sand. E side of Nature Rd., l.l mi N of its jct with Co. Hwys N & J.
TRS: T4N R17E S3SE 1/4, SE 1/4
Forming a zone of vegetation with the less common Sparganium chlorocarpum; also associated with Lemna minor.
Flower: N Fruit: Y Vegetation: Y Bud: N
Aquatic plants, both emergent (near the stream's edge) and completely submersed (in deep water of stream's center), there producing only ribbon-like phyllodial leaves. Leaf shape variable, especially the floating blades.