Rubus strigosus Michx.
Coefficient of Conservatism: 2
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt Shrub

In all sorts of dry to moist open or slightly shaded ground: thickets, forests, shores, stream banks, rocky openings; especially common following clearing, burning, erosion, or other disturbance in moist forests. For plants intermediate with R. occidentalis, see discussion under that species. The canes in R. strigosus may be somewhat glaucous, but not conspicuously so, and they lack the stout broad-based prickles of R. occidentalis.

There may be some slender prickles in the inflorescence, even without glandular tips, but they are ± straight and only slightly if at all broad-based. Pale-fruited forms are known of both raspberry species.

The Old World R. idaeus L. is similar, but glandless. Both it and R. strigosus, which is often treated as a variety or subspecies of R. idaeus, are the sources of the numerous cultivated red raspberries.


Alcona County
Alger County
Allegan County
Alpena County
Arenac County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Clinton County
Crawford County
Delta County
Dickinson County
Emmet County
Genesee County
Gladwin County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Iosco County
Isabella County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Lapeer County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Saginaw County
Schoolcraft County
St. Clair County
Van Buren County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. August 19, 2022.