Amelanchier interior Nielsen
Common Name: SERVICEBERRY
Coefficient of Conservatism: 4
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt Shrub

Often a tall, clumped shrub, typical of sandy open savanna and dunes (oak, jack pine, aspen), shallow soil on rock outcrops, shores; less often in or at borders of hardwoods and conifer swamps or in other wetlands.

Here treated as a complex of uncertain origin, characterized by finely toothed acute to short-acuminate leaves. The commonest and most easily recognized expression has leaves nearly glabrous (or soon glabrate) and bronze-red at anthesis, similar to A. laevis but the summit of the ovary densely to sparsely tomentose. There is gradation, however, to plants with some tomentum on at least young leaves and this may persist on petioles or midribs. The suggestion that A. interior represents a hybrid swarm involving A. laevis (or sometimes A. arborea) and plants of the A. spicata and/or A. sanguinea complexes has been made and is a likely explanation for the range of plants included here. Plants with veins extending clearly into the leaf teeth suggest A. sanguinea as a parent; those with ± tomentose young leaves suggest that A. arborea rather than A. laevis could be a parent (though such a character could come from either A. sanguinea or A. spicata).

Locations

Alger County
Allegan County
Alpena County
Antrim County
Arenac County
    Including Charity Island
Baraga County
Bay County
Benzie County
Berrien County
Calhoun County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Clinton County
Crawford County
Delta County
Dickinson County
Emmet County
Genesee County
Gladwin County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Iosco County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Manistee County
Marquette County
Mason County
Menominee County
Midland County
Muskegon County
Oakland County
Oceana County
Ontonagon County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Sanilac County
Schoolcraft County
St. Clair County
Washtenaw County
Wexford County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 14, 2017. http://www.michiganflora.net/species.aspx?id=2423.