Pseudostems 1--2 m. Ligule 2-cleft, 1--2 cm, tomentose; petiole 1--5 cm; leaf blade lanceolate, 30--50(--80) × 8--10(--20) cm, abaxially pubescent, base attenuate, apex caudate-acuminate. Panicles erect, 30--40 cm, gray pubescent, many flowered; branches 1.5--3 cm, rarely longer, apically 3--5-flowered; bracteoles oblong, ca. 8 mm, pubescent, deciduous, apex cucullate. Pedicel very short. Calyx tubular, 6--10 mm, pubescent, apex 3-toothed, teeth subrounded. Corolla tube ca. 1.2 cm; lobes oblong, ca. 1 cm, apex cucullate. Lateral staminodes ca. 5 mm. Labellum reflexed at anthesis, oblong-ovate, 1--1.2 cm × 6--7 mm. Filament ca. 1.4 cm; anther 3--4 mm. Ovary ovoid, 1.5--1.8 mm, pubescent. Capsule globose, ca. 1 cm in diam., glabrous; pericarp fragile. Fl. Mar--Jul, fr. Apr--Oct. 2 n = 48*.
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