Coefficient of Conservatism:
Coefficient of Wetness:
G. E. Crow
A native of the southeastern states, from Texas to Florida northward, this species has become established as far north as New England and southern Michigan, perhaps escaped from cultivation; it is a popular aquarium plant. It was first collected in 1935 in Kalamazoo Co.
This is our only aquatic vascular plant with opposite (rarely whorled) much-dissected leaves on distinct petioles (5–15 mm long on well-developed leaves). The palmate pattern of dissection results in a characteristic fan-shaped leaf.
St. Joseph County
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 10, 2017. http://www.michiganflora.net/species.aspx?id=689.