This alien octoploid (2n = 56) is known from scattered sites in eastern and western states, especially on dry infertile calcareous sites (FNA 24). There are few records from Ky., but it has become locally abundant on a dolomitic glade in GARR (JC for KY; W. Overbeck for EKY). It is a tussock-forming grass that declines with more intensive grazing, but it can persist into shrubby stages of succession.