Pseudostems 60--90 cm. Ligule 5--10 mm, membranous; petiole absent to 1.5 cm; leaf blade lanceolate, 15--35 × 3--6 cm, glabrous, base attenuate, apex narrowly caudate. Spikes 10--20 × 3--3.5 cm, dense; bracts oblong, rolled tightly around calyx, 1.3--1.5 cm, distal ones 1-flowered. Flowers bright yellow. Calyx longer than bracts, apex obtuse, 3-toothed. Corolla tube 1.3--1.5 cm; lobes linear, 8--11 mm. Lateral staminodes obliquely lanceolate, ca. 8 mm. Labellum suborbicular, ca. 1 cm, apex 2-cleft. Filament ca. 1 cm; anther 5--6 mm. Fl. Jul--Aug.

Rocky hills; 1900--2800 m. Xizang, Yunnan [Sikkim].