Aira cupaniana

Culms to 40 cm high. Leaves glabrous, minutely scabrous along nerves; blade inrolled, to 8 cm long and 0.5 mm wide; ligule toothed at apex, to 5 mm long. Panicle initially contracted with erect branches, finally open to sparse with spreading branches, to 15 cm long and 12 cm wide. Spikelets 1.8–2.5 mm long; glumes equal or the lower slightly longer, obtuse to acute, often shortly apiculate; lemmas (excluding membranous apical lobes) from one-half to two-thirds as long as glumes, glabrous except for short callus hairs, minutely scabrous; awn usually absent from lower floret, upper floret with awn inserted about one-third from base, 2–3 mm long. Flowers Sep.–Dec.