Solidago simplex Kunth
Common Name: GILLMAN'S GOLDENROD
Coefficient of Conservatism: 10
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt P-Forb

Solidago simplex B. S. Walters

Sand dunes and beaches along the shores of the Great Lakes; sandy plains and savannas with jack pine and oak; rock crevices and ledges near Lakes Michigan and Superior.

Common and showy late in the summer on sand dunes along Lake Michigan and northern Lake Huron is var. gillmanii (A. Gray) G. S. Ringius. This is a robust variety, the stems sometimes a meter tall, the inflorescences often branching and large-headed, and the leaves toothed. Plants of the jack pine plains, even large ones, tend to have slightly smaller involucres, sometimes only 4.5–5 mm long. These plants bloom very early, and are more similar to the more western var. simplex but their status remains unclear. Plants (usually ± stunted) of Upper Peninsula rock outcrops near the shores of Lake Superior and rarely Lake Michigan are also sometimes small-headed, and are var. ontarioensis. Herbarium specimens especially from northern Michigan are difficult to tell from dwarfed forms of the variable S. hispida, however, in our area, S. simplex is the only species with glutinous phyllaries and leaves—often manifested by sticking to the newsprint when pressed. However, when plants get drought stressed or covered with dust or grit, it can be harder to tell if they are glutinous.

Locations

Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Benzie County
Berrien County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
Crawford County
Delta County
Emmet County
Kalkaska County
Keweenaw County
    Including Isle Royale
Lake County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Manistee County
Marquette County
Mason County
Montmorency County
Muskegon County
Oceana County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Schoolcraft County
Van Buren County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 12, 2017. http://michiganflora.net/species.aspx?id=469.