Salix euxina I. V. Belyaeva
Common Name: BRITTLE WILLOW, CRACK WILLOW
Synonym: Salix fragilis
Coefficient of Conservatism: *
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Ad Tree

An Old World native, like S. alba established in moist ground as on shores and banks. First collected in 1892 in St. Clair Co.

The leaves or bracts on the short flowering branchlets of this species and S. alba are usually ± entire; glands are generally conspicuous at the summit of the petiole on mature leaves, but usually not on younger ones. The branchlets of S. euxina are very brittle (whence the name) at the base, breaking off in windstorms. Twigs broken in this way may root at the edges of rivers and streams.

Belyaeva (2009) has shown that the hybrid formerly known as Salix ×rubens should be called S. ×fragilis, L., and the species long known under this latter name must now be called S. euxina. See also the discussion under S. alba

Collections from a very large shrub along the Thunder Bay River in Alpena Co. (R. Garlitz 2305a, b) are S. triandra L. × S. alba or S. euxina. Salix triandra has glabrous leaves, like S. euxina, but with long-persistent stipules and 3 stamens in the male flowers. Salix euxina lacks persistent stipules and has only 2 stamens.

Locations

Alpena County
Bay County
Berrien County
Cheboygan County
Chippewa County
Delta County
Eaton County
Emmet County
Genesee County
Gladwin County
Gogebic County
Grand Traverse County
Houghton County
Ingham County
Kalamazoo County
Kalkaska County
Kent County
Lapeer County
Leelanau County
Lenawee County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Marquette County
Menominee County
Monroe County
Oakland County
Saginaw County
Shiawassee County
St. Clair County
Tuscola County
Van Buren County
Washtenaw County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 11, 2017. http://www.michiganflora.net/species.aspx?id=2628.