Aristida basiramea Vasey
Coefficient of Conservatism: 3
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt A-Grass

Dry sandy open ground; typically not in the somewhat moister, sometimes calcareous sites favored by our other two somewhat widespread native annual Aristida species, A. longespica and A. necopina, but more in barrens with leached acidic soils. 

This is our most northerly species of Aristida, but a 1914 O. A. Farwell collection from “Bluffs at Clifton,” Keweenaw Co. is far enough out of range to be suspicious and is not mapped. The measurements in the key for awns of this species and A. dichotoma are based directly on the distance from base of awn to apex, without any allowance for straightening out the spiral loops.


Allegan County
Arenac County
Barry County
Benzie County
Berrien County
Calhoun County
Crawford County
Delta County
Gratiot County
Iosco County
Kalamazoo County
Kent County
Lake County
Leelanau County
Lenawee County
Mason County
Midland County
Muskegon County
Newaygo County
Ottawa County
Schoolcraft County
St. Joseph County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. May 28, 2022.