Elymus virginicus L.
Coefficient of Conservatism: 4
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt P-Grass

Elymus virginicus A. A. Reznicek

Moist deciduous or sometimes coniferous forests and thickets, especially along stream banks and floodplains; open marshy shores and meadows.

A variable species, but normally distinct in the strongly hardened glumes (basally and on inner face), conspicuously outcurved at their bases. The spikelets disarticulate below the glumes, leaving the rachis naked, unlike E. villosus or E. riparius, which disarticulate above the glumes, leaving the rachis bristling with glumes. A very few collections appear intermediate with E. riparius and may represent hybrids.

Elymus curvatus Piper is known from near Lake Superior in Minnesota, Ontario, and Wisconsin, and could occur in the western Upper Peninsula. It resembles E. virginicus, but has lemmas awnless or with vestigial awns less than 4 mm long, whereas E. virginicus has most lemmas awned longer than 5 mm.


Alger County
Allegan County
Alpena County
Arenac County
Baraga County
Bay County
Berrien County
Calhoun County
Cass County
Charlevoix County
Cheboygan County
Chippewa County
Clare County
Clinton County
Crawford County
Delta County
Dickinson County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Ingham County
Ionia County
Iosco County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
Lake County
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
Missaukee County
Monroe County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Ontonagon County
Osceola County
Ottawa County
Presque Isle County
Saginaw County
Schoolcraft County
Shiawassee County
St. Clair County
St. Joseph County
Tuscola County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 26, 2022. https://www.michiganflora.net/species.aspx?id=2105.