Pistia stratiotes L.
Coefficient of Conservatism: *
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Ad P-Forb

Native probably to South America, this is a small, free floating aquatic with rosettes of densly hairy leaves ca. 1015 cm in diameter that grows very quickly and can blanket substantial areas during the growing season. Though presumably unable to survive Michigan winters, it is commonly cultivated in water gardens and may be regularly re-established each growing season through dumping of excess plants into waterways, or perhaps accidental dispersal. Documented in 2015 in the Detroit River in Wayne Co., by B. Luukkonen and A. Spenski.


Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 29, 2021. https://michiganflora.net/species.aspx?id=2923.