Andropogon virginicus L.
Common Name: BROOM-SEDGE
Coefficient of Conservatism: 4
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt P-Grass

Open, mostly sandy or gravelly fields, juniper savannas, prairies, and roadsides; usually in dry settings, but occasionally on moister shores.

An attractive species in late summer through fall, it resembles Schizachyrium scoparium and sometimes grows with it, but can be distinguished superficially by the visibly expanded spathe-like sheath largely enclosing the racemes. Old stems and bracts take on striking coppery tints, and are very persistent and showy on sunny days late into the fall and even until next spring if not flattened by snow. 

This species has clearly increased its range in recent times. It was found by the First Survey in Kalamazoo Co. in 1838, and is surely native, presumably on prairies and shores, but pre-1950 collections are known only from SW Michigan (Berrien, Cass, and Kalamazoo Cos., north to Muskegon Co.).

Locations

Allegan County
Berrien County
Calhoun County
Cass County
Emmet County
Kalamazoo County
Kent County
Lake County
Lenawee County
Livingston County
Mason County
Mecosta County
Midland County
Monroe County
Muskegon County
Newaygo County
Ottawa County
Saginaw County
St. Joseph County
Van Buren County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 12, 2019. https://michiganflora.net/species.aspx?id=2007.