Pseudostems to 1 m. Ligule 2-cleft, ca. 2 mm, margin ciliate; petiole absent to 4 cm; leaf blade lanceolate or linear-lanceolate, 20--30 × 2--4(--6) cm, glabrous except hispid at subapical margin, base attenuate, apex narrowly caudate. Spikes erect, 10--20 cm; rachis tomentose; bracteoles very small. Flowers in clusters of 3 on rachis. Calyx cylindric, abaxially pubescent, apex 3-cleft. Corolla tube subequaling or slightly longer than calyx; lobes oblong, 8--10 mm, abaxially villous. Lateral staminodes linear, ca. 2 mm. Labellum obovate, 0.7--1.3 cm, margin crisped, apex 2-cleft. Stamen longer than labellum; anther ca. 4 mm. Ovary globose, pubescent. Capsule globose, 7--8 mm in diam., pubescent, apex with persistent calyx. Seeds 5 or 6. Fl. Apr--Jun, fr. Jun--Nov. 2 n = 48*.

Medicinal.

* Shaded wet areas in forests. Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Sichuan, Yunnan.