Dichanthelium lindheimeri (Nash) Gould
Common Name: PANIC GRASS
Synonym: Panicum lindheimeri
Coefficient of Conservatism: 8
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Grass

Panicum lindheimeri of Michigan Flora.

Moist sandy to peaty ground, especially on sandy, gravelly, calcareous shores and marshy, marly flats.

Being essentially glabrous, this is often most difficult to separate from Dichanthelium spretum but, aside from the habitat differences, even the most robust individuals are shorter and stouter, only up to ca. 65 cm tall, with panicles only up to ca. 7.5 cm long and typically 1–1.5 (–2) times as long as wide when fully expanded.

Some of the southernmost collections referred here to D. lindheimeri (e.g., some from Berrien, Monroe, Oakland, Washtenaw, and Wayne Cos.) look somewhat different from the characteristic stiff, glabrate, usually reddish, plants of northern often marly shore meadows along Lakes Michigan and Huron; but because they are essentially glabrous, they are included here. Perhaps these southern specimens include an admixture of something else. Sometimes subsumed into D. acuminatum as subsp. lindheimeri (Nash) Freckmann & Lelong (Freckmann & Lelong 2002).

Locations

Alcona County
Alpena County
Antrim County
Berrien County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Crawford County
Delta County
Emmet County
Grand Traverse County
Huron County
Iosco County
Kalamazoo County
Kent County
Leelanau County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Mason County
Midland County
Monroe County
Montmorency County
Muskegon County
Oakland County
Ottawa County
Presque Isle County
Saginaw County
Schoolcraft County
Tuscola 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. November 13, 2019. https://michiganflora.net/species.aspx?id=2077.