Geranium carolinianum L.
Coefficient of Conservatism: 4
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt A-Forb

Sandy and rocky fields, clearings, and bluffs; thin soil over limestone pavement (Drummond Island); shores and grasslands; disturbed places; very localized northwards.

Not nearly so common as G. bicknellii, and often confused with it. In our area, G. carolinianum seems quite consistently to have a rather compact, rounded inflorescence, giving the impression of a tight umbel, while in G. bicknellii the inflorescence is more diffuse and open. The mericarps in both species are smooth, with long ascending hairs (the longest ca. 1–1.5 mm, and darkish). The seeds in both are weakly reticulate with usually ± elongate cells.


Berrien County
Cass County
Chippewa County
    Only on Drummond Island
Hillsdale County
Kalamazoo County
Kent County
Keweenaw County
    Including Isle Royale
Lenawee County
Macomb County
Monroe County
Oakland County
St. Clair County
St. Joseph 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. September 27, 2022.