Coefficient of Conservatism:
Coefficient of Wetness:
Muddy shores and shallow water; very rare (or overlooked) in southern Michigan. Not collected in the state since 1861.
Records mapped in Michigan Flora from St. Clair and Presque Isle Cos. are apparently unusual variants of S. cuneata.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 11, 2017. http://michiganflora.net/species.aspx?id=29.