Rosa arkansana Porter
Common Name: PRAIRIE ROSE
Coefficient of Conservatism: 4
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt Shrub

Rosa arkansana R. W. Smith

Roadsides and fields, along railroads, river banks and lake shores.

Our plants are mostly if not all the eastern representative of this prairie species, sometimes designated as var. suffulta (Greene) Cockerell; there may be some doubt as to whether they are truly native or only adventive here.

This species apparently hybridizes with R. carolina, also tetraploid, farther west, but it is so local in our area that hybridization seems minimal here. The Chippewa Co. collection has sparsely bristly hypanthia and may represent a hybrid.

Locations

Baraga County
Cass County
Charlevoix County
Cheboygan County
Chippewa County
Delta County
Emmet County
Houghton County
Ingham County
Kalamazoo County
Keweenaw County
    Including Isle Royale
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Schoolcraft 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 10, 2017. http://www.michiganflora.net/species.aspx?id=2536.