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Poa trivialis L.
Common Name: BLUEGRASS
Coefficient of Conservatism: *
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Ad P-Grass

Moist places, forested and open; quite local. Introduced from Europe and first collected in 1919 in Washtenaw Co.

Unlike our other Poa species, P. trivialis spreads by above-ground stolons to form leafy mats in moist soils, especially along shaded trails. Rarely, the keel of the lemma is nearly smooth, but the long ligules and scabrous pedicels will help to identify it.


Alger County
Allegan County
Antrim County
Berrien County
Calhoun County
Eaton County
Gogebic County
Houghton County
Ingham County
Ionia County
Kalamazoo County
Kent County
Leelanau County
Lenawee County
Livingston County
Mackinac County
    Only on Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Ontonagon County
Ottawa County
Shiawassee 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 15, 2022. https://michiganflora.net/species.aspx?id=2206.