6a. var. geniculata (Raf.) Fernald

A. intermedia Scribn. & C. Ball

Glumes 4–11 mm long. Lemmas with the body 3–10 mm long, the central awn 10–27 mm long, the lateral awns 6–18 mm long, erect to spreading or sharply bent outward. July–October.

Uncommon and widely scattered in Missouri (eastern U.S. and adjacent Canada west to Nebraska and Texas). Upland prairies, glades, bluffs, and dry upland forest; also old fields, pastures, fallow fields, railroads, roadsides, and dry, disturbed areas.