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
Centaurea repens of Michigan Flora.
An Asian species collected in Michigan in 1928 along railroad tracks near Ann Arbor, Washtenaw Co. Since, collected in 1936 (but persisting for at least a decade) along a railroad in Kalamazoo Co. This is a noxious weed in many parts of North America.
This species is easily recognized by its entire phyllaries (scarious apically) and long (ca. 6–9 mm) but early deciduous pappus. See Hidalgo et al. (2006) for detailed information. Also known as Acroptilon repens (L.) DC.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 30, 2023. https://michiganflora.net/species.aspx?id=209.