毛穗披碱草 mao sui pi jian cao

Roegneria trichospicula L. B. Cai, Bull. Bot. Res., Harbin 14: 340. 1994.

Culms erect or slightly geniculate at base, 90–110 cm tall, 1.5–2.5 mm in diam., 4- or 5-noded, usually glabrous but puberulent below spike. Leaf sheath usually villous proximally; ligule ca. 0.5 mm; leaf blade 6–16 × 0.2–0.45 cm, both (especially adaxial) surfaces pilose. Spike lax, 8–12 cm; rachis puberulent on back, margin spinescent. Spikelets 1 per node, 12–18 mm, with 3–5 florets; rachilla hispidulous; internodes 1.5–2.5 mm. Glumes lanceolate, subequal, 5–6 mm, 3-veined, hispidulous along veins, apex acuminate or pointed; point less than 2 mm. Lemma oblong-lanceolate, 5-veined, abaxially densely villous, apex with straight awn 6–12 mm; first lemma 9–10 mm. Palea equaling lemma, ciliolate along keels distally, glabrous between keels, apex truncate. Anthers yellow, ca. 2 mm. Fl. and fr. Aug.

* Forest margins; 3500–4400 m. S Qinghai.