Rosa multiflora Murray
Common Name: MULTIFLORA ROSE, JAPANESE ROSE

Coefficient of Conservatism: *
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Ad Shrub
Rosa multiflora A. A. Reznicek

Roadsides, disturbed forests and borders, fencerows and fields, thickets and untended yards; sometimes in moist ground although usually in dry places. A native of eastern Asia, long unwisely recommended for “living fences” and now an aggressive weed in some parts of the country. Not collected in Michigan until 1934, in Kalamazoo Co., but now a common pest here. A collection from Washtenaw Co. in 1914 is probably also from a wild plant, but lacks an explicit statement to that effect.

The flowers are usually white, and the styles are united into a column that protrudes more conspicuously from the hypanthium than in most species. The clusters of numerous small orange to red fruits are distinctive late in the season.

Locations

Alpena County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Calhoun County
Cass County
Clinton County
Emmet County
Genesee County
Hillsdale County
Ingham County
Isabella County
Kalamazoo County
Kent County
Lapeer County
Lenawee County
Livingston County
Mason County
Monroe County
Muskegon County
Newaygo County
Oakland County
Presque Isle County
Schoolcraft County
Shiawassee County
St. Clair County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. September 3, 2014. http://michiganflora.net/species.aspx?id=2543.