Peyritschia koelerioides (Peyr.) E. Fourn.

Peyritschia koelerioides (Peyr.) Fourn. Mex. PI. Gram 110. 1886.
Aira koelerioides Peyr. Linnaea 30: 5. 1859.
Deschampsia koelerioides Benth. Jour. Linn. Soc. 19; 96. 1881. (Based on Aira koelerioides Peyr.)
Not D. koelerioides Kegel, 1868. Graphephorum allijugum Fourn. Mex. PI. Gram. 111. 1886. (Type from Mount Orizaba, Mexico,
Liebmann 603.) Triselum altijugum Scribn. Rhodora 8: 89. 1906. (Based on Graphephorum allijugum Fourn.)
Culms tufted, erect, glabrous, 30-60 cm. tall; sheaths glabrous; ligule obtuse, 1-2 mm. long; lilades flat, scabrous, 4—8 cm. long, 3-4 mm. wide; panicle pale, elongate, linear, contracted, densely flowered, more or less interrupted, 10-20 cm. long, the axis angled, somewhat scabrous, the branches short, erect; spikelets 2-flowered, the rachilla more or less pilose; glumes subequal, minutely scabrous on the keels, acute, 3.5-5 mm. long; lemmas narrow, glabrous, the first about 3-3.5 mm. long, minutely bilobed, the lobes obtuse, awnless or with a straight somewhat divergent awn attached about 0.5 mm. below the summit, the second lemma similar to the first but a little shorter.
Type locality: Toluca, Mexico, altitude 2600 meters (Heller 311). Distribution; Open woods at high altitudes, mountains of southern Mexico.