Pseudostems 60--80 cm. Leaves sessile; ligule entire, 1.8--2.2 cm, densely brownish pubescent; leaf blade narrowly lanceolate, 20--30 × 3.5--6 cm, adaxially glabrous, abaxially brownish pubescent along midvein, base cuneate, apex caudate. Spikes ellipsoid, 7--10 × 5--7 cm, densely flowered; bracts white, narrowly obovate, ca. 2.5 cm × 8 mm, slightly brownish hairy, 3-flowered, margin membranous, apex acute; bracteoles tubular, ca. 1.2 cm. Flowers white. Calyx ca. 1.7 cm, brownish pubescent, apex 3-toothed. Corolla tube ca. 2.5 cm; lobes ca. 1.3 cm. Lateral staminodes 1.5--4 cm. Labellum suborbicular, ca. 1.3 × 1 cm, base attenuate into claw, apex deeply emarginate. Filament ca. 1.3 cm; anther ca. 6 mm. Ovary densely white villous. Fl. Sep.
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