Culms 20-120 cm, glabrous or hispid, with papillose-based hairs. Leaves
sparsely to densely hispid throughout, hairs papillose-based; sheaths shorter
than the internodes; ligules 2-3 mm; blades 3-20 cm long, 6-13 mm
wide, subcordate. Rames (2)7-27 mm. Sessile spikelets 1-1.3 mm;
anthers 0.3-0.4 mm. Pedicellate spikelets 1.6-2.2 mm; glumes
chartaceous; lower glumes winged on 1 keel; upper glumes with the
midvein narrowly winged; anthers 1-1.2 mm. Caryopses 0.7-0.9 mm,
elliptic to nearly orbicular in outline, brown to yellow-brown. 2n = 14.
Hackelochloa granularis is a native of the Eastern Hemisphere that has
become established in cultivated land, roadsides, and weedy areas of the southern
region of the United States. Its range extends south through Mexico and Central
and South America. Hitchcock (1951) reported it from New Mexico, but it is not
established there (Allred 1993).
