光花披碱草 guang hua pi jian cao

Roegneria leiantha Keng, Acta Univ. Nankin. Sci. Nat. 1963(1): 42. 1963; Kengyilia leiantha (Keng) L. B. Cai.

Culms usually geniculate at base, ca. 45 cm tall, usually 4-noded. Leaf sheath smooth, glabrous; leaf blade flat or inflexed, 6–11 × 0.2–0.4 cm, smooth and glabrous or adaxial surface scabrous. Spike ± curved, ca. 12 cm; rachis margin ciliolate. Spikelets 1 per node, 12–14 mm excluding awns, with 3 or 4 florets. Glumes narrowly oblong, subequal, 5–8 mm including awn, 3–5-veined, scabrous along veins, apex acuminate or with awn 1–2 mm. Lemma oblong-lanceolate, 5-veined, glabrous but scabrous along veins, margin membranous; first lemma 9–10 mm; callus subglabrous; awn 4–5 mm. Palea equaling lemma, wingless and ciliolate along keels, apex obtuse or emarginate. Anthers yellow, 2–3 mm. Fl. and fr. late summer.

* Mountain slopes; 2300–2400 m. Qinghai, Yunnan.