Locality:
USA, Michigan, Kent, Spencer Township, Southeast shore of Lincoln Lake.
43.238071 -85.356493 +-700m. WGS84
Georeference Remarks:
Polygon drawn on Google Hybrid base layer, includes area within ~100m of Lincoln Lake's southeast shore, including marshy areas around Clear Creek.
Habitat:
Growing in water at edge of lake, pure sand, along with S. latifolia from a gracilis, Pontederia cordata and Nymphaea tuberosa