Coefficient of Conservatism:
Coefficient of Wetness:
A. A. Reznicek
First discovered in Michigan by S. Alexander in 1904 along the Huron River east of Ann Arbor, Washtenaw Co. Also grows in wet thickets and openings in river bottom forests along the same river northwest of Ann Arbor and a few colonies in between, but very rare, and listed as endangered in the state. Not common, and widely scattered throughout its range, which is mostly well to the south.
Our plants are tall, very leafy, in clumps, with handsome flowers open toward the end of September and early October, later than usual for C. glabra.