Coefficient of Conservatism:
Coefficient of Wetness:
Panicum columbianum of Michigan Flora.
Dry sandy open ground, thickets, and forests (jack pine, oak, and/or aspen), dune ridges, pine forests, and less often on moist shores.
This species is quite variable in amount of pubescence, in shape of the first glume, and in size of spikelets and leaves, although the double vestiture of sheaths is always characteristic. Subsumed (along with many other entities) into an extraordinarily variable Dichanthelium acuminatum as subsp. columbianum (Scribn.) Freckmann & Lelong.
Some glabrate or older and weather-beaten specimens may have the double vestiture obscure. These superficially resemble D. implicatum, but may often be distinguished by longer spikelets and longer, more acute first glume, and the presence of fine pubescence typical of plants with double vestiture.