Justicia americana (L.) Vahl
Coefficient of Conservatism: 9
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb
Status: T

Spreads extensively by leafy stolons, forming large dense colonies, albeit rather local, along the Huron and Raisin rivers and nearby lakes and streams. Recently found along the St. Joseph River in St. Joseph County.

The flowers have white corollas with one or more lobes purple or streaked with purple and are crowded into small dense heads on axillary peduncles (4.5–) 6–11 cm long.


Livingston County
Monroe County
St. Joseph County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. October 19, 2021. https://michiganflora.net/species.aspx?id=1.