Peyritschia pringlei (Scribn.) S. D. Koch

Deschampsia pringlei Scribn. Proc. Acad. Phila 1891:300. 1891.
Perennial; culms cespitose, erect or somewhat decumbent at the base, rather slender, glabrous, 30-100 cm. tall; sheaths glabrous or slightly roughened; ligules truncate, the lower short, the uppermost as much as 4 mm. long; blades flat or becoming involute, scabrous, those of the innovations slender or filiform, those of the culm as much as 3 mm. wide; panicle spikelike, more or less interrupted or lobed, tapering above, pale or purplish, 10-15 cm. long, sometimes as much as 20 cm., the axis scabrous, the branches appressed; glumes acuminate, scabrous on the keel, exceeding the 2 florets, 4-5 mm. long; lemmas narrow, rounded on the back, the lower about 3 mm. long, the upper a little smaller, short-pilose on the callus, the rachilla-joint minutdy pUose, 0.5 mm. long; awns geniculate, attached above the base of the lemma, twisted below, divergent and straight above.
TVPB locauty: Base of the Sierra Madre, Chihuahua (Pringle 1-429). Distribution: Wet places and rocky hills, Chihuahua to Puebla and Toluca.