Amerorchis rotundifolia (Pursh) Hultén
Synonym: Orchis rotundifolia
Coefficient of Conservatism: 10
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb
Status: E

Orchis rotundifolia of Michigan Flora.

A northern species, very rare and local as far south as Michigan and here found only in rich conifer swamps with cedar, tamarack, spruce, and/or balsam fir, often with underlying marl. Bateman et al. (2009) present evidence for recognizing this species as Galearis rotundifolia (Pursh) R. M. Bateman.

Very rare now, or perhaps extirpated, in the Lower Peninsula. 


Chippewa County
Delta County
Dickinson County
Emmet County
Keweenaw County
    Only on Isle Royale
Mackinac County
Marquette County
Montmorency County
Roscommon County
Schoolcraft County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. May 22, 2022.