Coefficient of Conservatism:
Coefficient of Wetness:
Rich, moist deciduous forests, often at bases of slopes, edges of seeps, and along streams; rare northward.
A collection by O. A. Farwell from the Keweenaw County, 20 Sept. 1888, is not mapped. Despite not seeming too far out of range, it is part of a small group of southern species all alleged to have been collected on that day that likely all resulted from an erroneously labeled bundle.