Plants ca. 50 cm tall. Leaves 1--3, usually 2; leaf sheath striate; ligule 2-lobed, 3--6 mm, puberulent; petiole 0.5--5 cm, puberulent; leaf blade narrowly elliptic or oblong, rarely ovate to oblanceolate, 10--40 × 3.5--11 cm, glabrous except puberulent along midvein, base cuneate to broadly so, sometimes oblique, margin densely ciliate, apex acuminate. Spikes 3--6 cm; peduncle 4--6 cm; bracts obovate or oblong, 1.2--1.5 cm × 5--8 mm, 1-or 2-flowered; bracteoles absent. Calyx white basally, purple distally, ca. 1.6 cm, puberulent, apex 3-or 4-toothed. Corolla tube ca. 1.8 cm, puberulent; lobes white tinged reddish, oblong, ca. 1.5 cm × 5 mm. Lateral staminodes red, linear, 5--6 mm. Labellum white with red lines, obovate, ca. 1.3 cm × 9 mm, margin coarsely serrate, apex 2-lobed. Anther red, 8--9 mm; connective appendage 2-lobed, small. Ovary densely pubescent. Capsule globose, 0.8--1.4 cm in diam., red pubescent, apex with persistent calyx. Fl. Jun. 2 n = 48*.
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