Geum urbanum L.
Common Name: AVENS
Coefficient of Conservatism: *
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Ad P-Forb

Geum urbanum A. A. Reznicek

A Eurasian weed, locally established at edges of thickets and disturbed, young forests, especially along trails; a yard and garden weed. First collected in Washtenaw Co. by A. A. Reznicek in 1978. A 1927 collection from the University of Michigan Botanical Gardens notes "from Sweden" and may have been from cultivation.

This hybridizes with the native G. canadense to form G. ×catlingii J.-P. Bernard & R. Gauthier, with pale yellow petals (but much longer than those of G. virginianum). This has been confirmed from Calhoun and Washtenaw Cos., but is doubtless overlooked. A peculiarity of the hybrid is that the inflorescences may continue to grow, sometimes forming an elongated tangle.  

Locations

Alger County
Calhoun County
Gogebic County
Ingham County
Marquette County
Ontonagon County
Washtenaw County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. September 21, 2018. https://michiganflora.net/species.aspx?id=2490.