Please try our next iteration of the Michigan Flora Online here. Beginning on February 1, 2023, michiganflora.net will point to this new site.
The new site offers several benefits over the existing website, including real coordinate mapping, giving a clearer view of the density of documentation as well as more precision about plant distributions and their link to landforms. We will also have the ability to update species pages more regularly, both in terms of new collections and as more existing Michigan specimens are georeferenced. In addition, we have a better photo display, and offer indented keys.
Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
Eupatorium maculatum of Michigan Flora.
Marshes, meadows, swales, wet prairies and fields, shores, bogs and fens, cedar swamps, thickets, moist clearings and roadsides, moist hollows, borders of lakes and streams.
The heads are rarely white [f. faxonii Fernald]; such plants have been collected in Bay, Ontonagon, and Washtenaw Cos. Our common plant, found throughout, is var. maculatum, with stems sparsely puberulent to more or less glabrous. The western var. bruneri (A. Gray) E. E. Lamont, with stems densely puberulent throughout, is found in the Keweenaw Co. mainland and Isle Royale, and the more eastern var. foliosum (Fernald) E. E. Lamont, with large uppermost stem leaves equaling or surpassing the heads, is scattered in the Upper Peninsula.