Cyperus lupulinus (Spreng.) Marcks
Synonym: Cyperus filiculmis
Coefficient of Conservatism: 2
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt P-Sedge

C. filiculmis of Michigan Flora.

Usually in dry sandy open ground, including oak or jack pine savannas, roadsides, old fields, dunes, and dry prairies; occasionally in moister places on banks of lakes and ponds. A fairly distinctive species, and one of our commonest. Most Michigan collections are subsp. macilentus (Fernald) Marcks, with the scales ca. 1.9–2.6 mm long, but a scattering of specimens from the southern half of the Lower Peninsula are the coarser subsp. lupulinus with scales mostly 2.5–3.4 mm long (in Michigan specimens). A few specimens appear transitional.


Allegan County
Arenac County
Barry County
Bay County
Berrien County
Calhoun County
Cass County
Clinton County
Crawford County
Hillsdale County
Huron County
Ingham County
Ionia County
Iosco County
Jackson County
Kalamazoo County
Kent County
Lake County
Lapeer County
Leelanau County
Lenawee County
Livingston County
Macomb County
Manistee County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ottawa County
St. Clair County
St. Joseph County
Tuscola 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. October 27, 2021.