Pseudostems 70--100 cm. Leaves usually sessile; ligule 3--5 mm, pubescent, apex concave; petiole rarely to 2 cm; leaf blade linear, 10--50 × (0.3--)0.9--1.5 cm, subglabrous, base cuneate, margin ciliate, apex long acuminate. Racemes erect, 4--10 cm; rachis densely pubescent; bracteoles very small, to 1 mm. Flowers solitary or paired on rachis, yellow. Calyx 0.9--1.2 cm, shallowly split on 1 side, abaxially puberulent, apex 3-toothed. Corolla tube subequaling calyx; lobes oblong, ca. 1 cm × 4 mm, puberulent. Lateral staminodes linear, 8--9 mm. Labellum ovate, ca. 2 cm, glandular, apex emarginate. Stamen ca. 1.5 cm; connective appendage triangular, ca. 1 mm. Ovary pubescent. Fl. May--Jun.

* Forests in valleys; 800--900 m. Guangxi.