Coefficient of Conservatism:
Coefficient of Wetness:
Muddy shores and shallow water near shores. Native to warmer parts of the Americas, but spreading and a troublesome aquatic weed in some areas; first discovered in Michigan in Lake Erie in 2018 by J. Bonello and G. Hannan in Monroe Co. Found again in 2019 along Lake St. Clair by B. Utrup.
This rather large mat-forming plant is very different from all our other Ludwigia species, with its large 5-petaled flowers, and elongate capsules, and has been placed in the genus Jussiaea. How far into the Great Lakes region this southern species may spread is uncertain, but it is also established in the Chicago region. Our plants are subsp. glabrescens (Kuntze) P. H. Raven.