Rosa rubiginosa L.
Common Name: SWEETBRIER
Synonym: Rosa eglanteria
Coefficient of Conservatism: *
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Ad Shrub

R. eglanteria of Michigan Flora.

A Eurasian species, locally naturalized as an escape from cultivation on roadsides, fields, railroads, old dunes, shores and river banks, borders of forests. Its very prickly stems are avoided by grazing animals, so that it can dominate the vegetation when well established. First collected in 1880 in Van Buren Co.

The leaflets, stipules, and sepals are all provided with abundant short-stalked glands and the foliage is ± fragrant. Some other species in the genus will rarely have a narrow lobe on a sepal, but such plants differ from the species in the first half of the key in other characters (e.g., R. setigera has mostly trifoliolate leaves and glabrous styles).

Locations

Allegan County
Benzie County
Berrien County
Calhoun County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
Emmet County
Gratiot County
Ingham County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Mason County
Midland County
Muskegon County
Oakland County
Ontonagon County
Ottawa County
St. Clair County
St. Joseph County
Van Buren County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 17, 2017. http://www.michiganflora.net/species.aspx?id=2545.