Fraxinus americana L.
Common Name: WHITE ASH
Coefficient of Conservatism: 5
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt Tree

Usually in well-drained upland deciduous forests, especially beech-maple, sometimes on floodplains.

The distinctive papillae (giving the whitish color) can often be best seen on the underside of a leaflet where it has been folded; they should not be confused with the larger glandular-looking dots often seen in the islets formed by the ultimate leaf veins in Fraxinus. Papillae do not occur on young seedlings. A form with the leaves mostly simple was described from Kalkaska Co.: f. barrii W. H. Wagner.

Nesom (2010b) recognizes Fraxinus smallii as a good species, distinguished from F. americana by larger fruits and differently shaped bud scales, and maps it from Van Buren Co.


Allegan County
Alpena County
Antrim County
Arenac County
Baraga County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
Crawford County
Delta County
Emmet County
Genesee County
Gladwin County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Iron County
Isabella County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
Lake County
Lapeer County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Mackinac County
    Only on Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Montcalm County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Ontonagon County
Ottawa County
Presque Isle County
Roscommon County
Saginaw County
Sanilac 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. June 26, 2022.