Lachnagrostis leviseta

Tufted, glabrous, perennial , 50–65 cm tall including inflorescences; culms erect; nodes enclosed or rarely shortly exserted from leaf sheath; sheaths sometimes purplish. Leaf blades erect, scaberulous, involute, to 20 cm long but often less than 10 cm and 0.5 mm or less wide; ligule membranous, acute, (3–)5–6 mm long. Inflorescence an open panicle 15–25 cm long from the lowest whorl, clearly exserted at maturity; branches stiffly divaricate to spreading; pedicels 3–16 mm long, scabrous, strongly purple. Spikelets (3.3–)3.5–4.0 mm long, purple (particularly along the keels); glumes acuminate, unequal, the lower 0.2–0.3 mm longer, keels scabrous, lateral surfaces smooth to slightly scaberulous or papillose, margins without cilia; lemma acute, 1.7–2.1 mm long, entire or microscopically 4-toothed at apex, covered in 0.5–0.7 mm long hairs, callus with hairs 0.6–1.0 mm long; awn absent or reduced to a minute point or bristle, 0.5 mm or less, inserted near the apex of the lemma and obscured by the lemma hairs or occasional lemmas with a fine subapical non-geniculate bristle to 2.5 mm long; palea 1.4–1.7(–2.0) mm long; rachilla extension plumose, (1.5–)1.7–2.0 mm long including hairs; anthers 0.7–0.9 mm long.