9d. var. stramineum (Nash) D.J. Banks
P. ciliatifolium var. stramineum (Nash) Fernald
P. bushii Nash
Leaf blades 3–15 mm wide, with hairs of 2 lengths, the
sparse to moderately dense, longer hairs mixed with relatively dense, minute
hairs. Spikelets (1.6)1.8–2.2 mm long, 1.5–2.0 mm wide, nearly as wide as long,
glabrous or hairy. Sterile floret with the lemma 2(3)‑nerved, the
midnerve usually absent. May–October.
Scattered, mostly in counties adjacent to the Missouri and Mississippi River floodplains (eastern U.S. west to Minnesota and Arizona; Mexico, Central America, Caribbean Islands). Mesic to dry upland forests; also
pastures, fallow fields, roadsides, and open, sandy, disturbed areas.