Hilaria cenchroides Kunth

Hilaria cenchroides H.B.K. Nov. Gen. & Sp. 1 : 117. 1815
Anthephora punctulata Steud. Syn. Gram. 111. 1854.
Stems 6-30 cm. tall, glabrous, or often puberulent or hirsute below the inflorescence^ simple or sparingly branched, often rooting at the lower nodes, the nodes barbed; leaf-sheaths glabrous or sparingly hirsute; blades commonly 3-6 cm. long, or rarely 1 dm. or more, up to 5 mm. wide, usually glabrous except for a few long hairs on the upper surface near the base, rarely sparingly hirsute all over; inflorescence 1.5-3 cm. long; spikelet-clusters 5-6 mm. long, broadly cuneate, often nearly as broad as long; empty scales of the lateral spikelets strongly scabrous, shorter than the cluster, the first scale unequally 2-lobed at the apex, the midnerve running out between the lobes as a hispidulous awn, the lateral nerves also often running out into short points, the second scale about one half as broad as long when spread out, 2-toothed or 2-lobed at the apex, 4-6-nerved, the midnerve sometimes excurrent as a short point, the lateral nerves usually vanishing at or below the apex, rarely excurrent; empty scales of the central spikelet 2-lobed to the middle, the hispid terete awn arising between the lobes, the inner margin of the lobes usually bordered with a hispid nerve which is commonly excurrent in a short point, the lobes obtuse or oblique. •
Type locality : On mountain plains, between Celaya and Guanajuato, Guanajuato. Distribution : Southern Durango and San Luis Potosi to Guatemala.