长耳香茅 chang er xiang mao

Perennial. Culms robust, ca. 1.2 m tall, ca. 6 mm in diam., nodes pubescent. Leaf sheaths glabrous, auriculate, auricles broadly lanceolate, ca. 10 mm; leaf blades linear-lanceolate, papery, ca. 50 × 1.6 cm, smooth, glabrous, abaxial surface glaucous, pubescent at sheath junction, adaxial surface green, base gradually narrowed, apex finely acuminate; ligule 6–7 mm. Spathate compound panicle ca. 50 cm, open, branches elongate, erect or drooping, spathes not clustered; spatheoles light reddish, 1.8–2 cm; racemes yellow-green, 1.3–1.8 cm; rachis internodes and pedicels ca. 3 mm, ciliate on margins; pedicel of homogamous pair not swollen. Sessile spikelet narrowly elliptic, ca. 5 × 1.3 mm; lower glume shallowly concave below middle, transversely wrinkled, sharply 2-keeled throughout, keels winged above middle, wings 0.15–0.3 mm wide, 4–6-veined between keels; upper lemma awned; awn 0.9–1 cm. Pedicelled spikelet 4–4.5 mm. Fl. Jun.

* Grassy slopes; ca. 1000 m. W Yunnan.

This taxon is closely related to Cymbopogon khasianus, but has broader leaf blades and longer sheath auricles.