Agrostis scabra Willd.
Synonym: Agrostis hyemalis
Coefficient of Conservatism: 4
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt P-Grass

Included in A. hyemalis in Michigan Flora.

Occurring in a diversity of habitats, especially in open sandy or rocky areas: on dunes, shores, and rock outcrops; often becoming abundant after fire or other disturbance on shores, jack pine plains, bog borders, etc.; under oak and jack pine; in bogs and on sand barrens.

In this species and A. hyemalis, the culm and panicle branches give an impression of being much straighter and stiffer than in the more lax appearing A. perennans, from which they are quite distinct, although any one of the characters in the key may give trouble. Agrostis perennans has much longer upper leaf blades in relation to the length of the panicle branches than A. hyemalis or A. scabra. Therefore, small specimens of these with panicle branches as short as in A. perennans will have the leaves too short for that species.


Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Arenac County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Crawford County
Delta County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Hillsdale County
Houghton County
Huron County
Ingham County
Iosco County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Leelanau County
    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
Montmorency County
Muskegon County
Newaygo County
Oakland County
Ogemaw County
Ontonagon County
Osceola County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Schoolcraft County
St. Clair County
St. Joseph County
Van Buren County
Washtenaw County
Wayne County
Wexford County


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