Chloris cucullata Bisch.

Chloris cucullata Bisch. Ann. Sci. Nat. Bot. III. 19: 357. 1853
Perennial; culms 15 (rarely 10 cm.)-65 cm. tall, usually erect, sometimes decumbent at the base and rooting at the lowermost nodes; sheaths compressed-keeled, glabrous or scaberulous, the hyaline margins often conspicuous; ligule 0.5 mm. long, very minutely ciliate; blades flat, conduplicate at the base, 5-25 cm. long (mostly 8-15 cm.), 1.5-3 mm. wide, scabrous on both surfaces or the lower glabrous except on the midnerve, the margins very scabrous; spikes 6-15, 3-5 cm. long, usually flexuous, ascending, spreading or some of them even reflexed, arranged in two or three approximate whorls, the rachis scabrous, densely pubescent at tlie base; spikelets 1.5-2 mm. long; glumes broad, I-nerved, scabrous on the keel, the first subobtuse, 0.8-1 mm. long, the second acute, 1.3-1.5 mm. long, sometimes mucronate; fertile floret 1.5-1.8 mm. long, obovate, the lemma shortly pilose on the keel and margins, mucronate or usually with an awn 1-2 mm. long; rudiment conspicuous, inflated, much broader than long, mucronate or with an awn 1-2 mm. long.
Type locality; Matamoros, Tamaulipas.
Distribution: Open sandy plains and waste places, Texas, New Mexico, and northeastern Mexico (type only).