Ulmus rubra Muhl.
Coefficient of Conservatism: 2
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt Tree

Ulmus rubra leaves A. A. Reznicek leaves

Floodplains, stream banks, and rich hardwoods.

The samaras are often larger (11–18 mm long) than in U. americana, and not ciliate and scarcely if at all notched at the apex. The rusty or red-brown pubescence of the buds and roughness on the undersides of the leaves are the most helpful characters for separating vegetative specimens of U. rubra from scabrous-leaved ones of U. americana. The leaves of rapidly growing, indeterminate shoots are conspicuously large, scabrous-roughened, and folded, making saplings stand out. 

The inner bark is quite mucilaginous, especially when chewed, whence the common name Slippery Elm, and is still used for throat lozenges, and other herbal uses.

See also notes under Ulmus pumila for hybrids.


Allegan County
Arenac County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
Clinton County
Genesee County
Grand Traverse County
Gratiot County
Hillsdale County
Ingham County
Isabella County
Kalamazoo County
Kalkaska County
Kent County
Lake County
Leelanau County
Lenawee County
Mason County
Midland County
Oakland County
Oceana County
Ontonagon County
Ottawa County
Sanilac County
Shiawassee County
St. Clair County
St. Joseph County
Tuscola 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. https://michiganflora.net/species.aspx?id=2751.