普兰披碱草 pu lan pi jian cao

Roegneria pulanensis H. L. Yang, Acta Phytotax. Sin. 18: 253. 1980; R. jacquemontii (J. D. Hooker) Nevski var. pulanen-sis (H. L. Yang) L. B. Cai.

Culms laxly tufted, 30–50 cm tall, 3- or 4-noded. Leaf blade flat or involute, 7–10 × 0.15–0.3 cm, both surfaces glabrous or laxly villous. Spike curved, 8–10 cm, with 5–8 spikelets; rachis smooth, glabrous; internodes 14–20 mm. Spikelets 1 per node, 22–26 mm, with 7–9 florets. Glumes oblong-lanceolate, 3–5-veined, smooth, glabrous, margin membranous; proximal glume 4.5–5 mm, awn (1–)1.5–5 mm; distal glume 5–7 mm, awn to 7 mm. Lemma lanceolate, ± laxly hirsutulous abaxially; first lemma ca. 11 mm; awn reflexed, 30–40 mm. Palea equaling lemma, shortly ciliate along keels distally. Fl. and fr. late summer.

* River banks; ca. 3600 m. Xizang, Yunnan.