Please try our next iteration of the Michigan Flora Online here. Beginning on February 1, 2023, 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.

Rudbeckia subtomentosa Pursh
Coefficient of Conservatism: 5
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt P-Forb
Status: X

The native occurrence of this species in Michigan rests on a fragmentary specimen from near Alma, Gratiot Co. (C. A. Davis in 1894, US) but one cannot help but wonder whether some mixture of specimen or data occurred long ago with this fragment, as the species is not represented in Davis's own herbarium, now at MICH. The species ranges otherwise southwest of Michigan, though known close enough in northwestern Indiana that it might be discovered at a more likely site in southwestern Michigan.

It is now also regularly included in some so called prairie plantings and was collected as "Persisting...about 20 years" in such a planting in Lenawee Co. (not mapped).It was more recently found well established and spreading from a planting in Oakland Co.


Gratiot County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 30, 2023.