Schizachyrium delavayi (Hack.) Bor

This grass has been placed in Eremopogon (a synonym of Di-chanthium), but differs from that genus in its keeled lower glume and the absence of homogamous spikelet pairs.

Perennial from a knotty rootstock. Culms loosely tufted, erect, wiry, 40–150 cm tall, upper internodes keeled, hirsute along keel, nodes glabrous. Leaf sheaths glabrous or thinly hirsute near mouth; leaf blades linear, 20–50 × 0.2–0.5 mm, glabrous or abaxial surface hirsute, apex finely acuminate; ligule truncate, 0.5–1 mm, margin ciliolate. Raceme 1–4 cm, purplish; spatheole narrow, glabrous or sparsely hirsute; rachis internodes and pedicels filiform, ca. 2/3 length of sessile spikelet, white-ciliate. Sessile spikelet 3.6–6 mm; callus obtuse, ca. 0.5 mm; lower glume narrowly lanceolate-oblong, leathery, glossy, back convex to almost flat, minutely asperulous, 5-veined, flanks keeled and narrowly winged above middle, wings ciliolate, apex erose; upper lemma 2-lobed in upper 1/4–1/3; awn 0.6–1 cm. Pedicelled spikelet male or barren, 4–5.3 mm, elliptic-oblong, papery, flat, back 3-veined, margins keeled and ciliolate above middle, apex acute. Fl. and fr. Jun–Nov.

Himalaya (Nepal to Bhutan), Assam, Tibet.

Guangxi, Guizhou, Hunan, Sichuan, Xizang, Yunnan [Bhutan, India (Naga Hills, Sikkim), N Myanmar, Nepal].

2400-2600 m

Dry mountainsides, dry open forests; 1200–3400 m.

Andropogon delavayi Hackel in A. Candolle & C. Candolle, Monogr. Phan. 6: 404. 1889; A. bootanensis J. D. Hooker; Eremopogon delavayi (Hackel) A. Camus; Schizachyrium bootanense (J. D. Hooker) A. Camus.

Schizachyrium delavayi là một loài thực vật có hoa trong họ Hòa thảo. Loài này được (Hack.) Bor miêu tả khoa học đầu tiên năm 1938.