Solidago speciosa Nutt.
Common Name: SHOWY GOLDENROD
Coefficient of Conservatism: 5
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt P-Forb

Dry open sandy ground, including oak and jack pine savannas, prairies, fields, rarely dunes, and associated roadsides and railroads; thin soil on high rock mountains in the western Upper Peninsula.

This is another variable species, but well named for its large showy inflorescences late in the season. In the southern part of the Lower Peninsula and apparently also in the western Upper Peninsula is var. speciosa, with basal leaves running 3–8 cm broad. Less robust plants, with fewer and narrower leaves, blooming earlier, are var. jejunifolia (E. S. Steele) Cronquist; these plants range south through the jack pine plains from Cheboygan Co., whence they were first described, into the range of var. speciosa, and also locally in the Upper Peninsula. The separation of varieties is not always clear, especially since the basal leaves often wither by flowering time.

Rarely, a plant of S. juncea has branches of the inflorescence not one-sided, and such plants are likely to run here in the key because of their larger lower leaves, glabrous or glabrate stems, and small heads. In S. juncea, at least the lower leaves are ± strongly toothed, and the inflorescence is predominantly terminal (even vase-like).

Locations

Alcona County
Allegan County
Alpena County
Baraga County
Barry County
Berrien County
Calhoun County
Cass County
Cheboygan County
Clinton County
Crawford County
Delta County
Emmet County
Hillsdale County
Iosco County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
Lake County
Lenawee County
Livingston County
Macomb County
Marquette County
Menominee County
Monroe County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Ontonagon County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Shiawassee County
St. Joseph County
Van Buren County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 17, 2017. http://www.michiganflora.net/species.aspx?id=470.