20b. var. scribnerianum (Nash) Fernald

P. oligosanthes var. helleri (Nash) Fernald

Dichanthelium oligosanthes var. scribnerianum (Nash) Gould

D. oligosanthes var. helleri (Nash) Mohlenbr.

Leaf sheaths glabrous or pubescent with spreading hairs, at least some of the hairs sometimes with pustular bases, the ligules 0.6–1.5 mm long, without any additional, longer hairs. Leaf blades glabrous or pubescent on the undersurface with short, spreading hairs. Spikelets mostly 2.7–3.3 mm long, the stalks mostly 2–5 mm long. 2n=18. May–July (vernal), June–September (autumnal).

Common nearly throughout the state (U.S., Canada, Mexico). Bottomland and upland prairies, sand prairies, glades, ledges of bluffs, mesic to dry upland forests, banks of streams and rivers, margins of ponds and sinkhole ponds, sloughs; also roadsides, railroads, pastures, fallow fields, old fields, and open, disturbed areas.