Prunus serotina Ehrh.
Coefficient of Conservatism: 2
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt Tree

A common tree of fencerows and borders of fields and forests, almost anywhere that birds have deposited the seeds; can be very scrubby in rocky ground or dry open jack pine or aspen savanna or a tall tree attaining considerable size in rich hardwoods.

There is often a strip of pubescence, usually rust-colored, along the midrib on the underside of the leaves, although sometimes there are no hairs at all. See also comments under P. virginiana.

Several species of Prunus, especially P. serotina, are known as stock-poisoning plants, because of their cyanogenic glycosides that produce dangerous amounts of hydrogen cyanide, particularly in the succulent young leaves and slightly wilted ones and in the pits, which may fatally poison children.

The only Keweenaw Co. collection is an 1884 one by Farwell lacking locality data; the tree is otherwise not known from either Houghton or Keweenaw Cos., and the Farwell collection may be mis-labeled. 


Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Arenac County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
Clare County
Clinton County
Crawford County
Dickinson County
Emmet County
Genesee County
Gladwin County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Ingham County
Ionia County
Iosco County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
Lake County
Leelanau County
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Missaukee County
Monroe County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Ontonagon County
Osceola County
Oscoda County
Otsego County
Ottawa County
Roscommon County
Saginaw County
Sanilac County
Shiawassee County
St. Clair County
St. Joseph County
Tuscola County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. June 22, 2021.