Salix serissima (L. H. Bailey) Fernald
Coefficient of Conservatism: 8
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt Shrub

Salix serissima catkins A. A. Reznicek catkins

Fens, open cedar and tamarack swamps, shores and streamsides, usually in calcareous sites.

Frequently distinguished in manuals from S. lucida by shorter aments. Although this is a tendency, it is not sufficiently consistent to use as a key character. Mature pistillate aments of Michigan specimens of S. serissima range 2–5 cm long; those of S. lucida 1.5–5 cm long. Staminate aments are ca. 2.5–3.5 cm long in S. serissima and 1.5–6 cm in S. lucida.

The name autumn willow is espressive, as this species is unique in fruiting in summer and fall. It is an intriguing sight to see the catkins of this species shedding the last of their fluffy seeds in mid winter. In fall, one can occasionally see striking shrubs looking as if cotton balls had been strung on them.



Alger County
Alpena County
Baraga County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
Cheboygan County
Chippewa County
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Crawford County
Delta County
Emmet County
Gogebic County
Hillsdale County
Houghton County
Ionia County
Isabella County
Jackson County
Kalamazoo County
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Lenawee County
Livingston County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Marquette County
Menominee County
Missaukee County
Oakland County
Oscoda County
Presque Isle County
Roscommon County
Schoolcraft County
Tuscola County
Washtenaw County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 26, 2022.