See notes under var. floridanum. Var. glabratum is a relatively robust, glabrous, glaucous segregate that extends into the central Mississippi and lower Ohio Valleys, often on more base-rich soils (F). There is a disjunct cluster of records for var. glabratum around the Bluegrass region of Ky., Ind. and Ohio (FNA 25; see also FNA's Grass Manual on the web).