Please try our next iteration of the Michigan Flora Online here. Beginning on February 1, 2023, will point to this new site.

The new site offers several benefits over the existing website, including real coordinate mapping, giving a clearer view of the density of documentation as well as more precision about plant distributions and their link to landforms. We will also have the ability to update species pages more regularly, both in terms of new collections and as more existing Michigan specimens are georeferenced. In addition, we have a better photo display, and offer indented keys.

Gymnocladus dioicus (L.) K. Koch.
Coefficient of Conservatism: 9
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt Tree

Gymnocladus dioicus leaves A. A. Reznicek leaves

Rich mesic and floodplain forests. Native as far north as southern Michigan.

Sometimes also planted as a shade tree, but, unlike Gleditsia, does not spread so readily. This has unique leaves, the largest of any native tree, twice-pinnate with entire leaflets, approaching a meter long in vigorous sprouts. The heavy, woody, large-seeded pods, as much as 20 cm long and 5 cm wide, remain on the tree until early spring.


Berrien County
Eaton County
Gratiot County
Hillsdale County
Ingham County
Ionia County
Kalamazoo County
Kent County
Lenawee County
Macomb County
Monroe County
Ottawa 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. December 7, 2022.