Plants 25-50 cm tall, with a stout, short rhizome. Stem erect, slightly pubescent or glabrescent, with several sheaths at base and 3 or 4 leaves above. Leaf blade elliptic or elliptic-ovate, 10-15 × 6-8 cm, slightly pubescent or glabrescent on veins on both surfaces, minutely ciliate, apex acuminate or subacute. Inflorescence terminal, 1-or rarely 2-flowered; peduncle pubescent or glabrous; floral bracts foliaceous, elliptic or rarely elliptic-lanceolate, 7-9 × 4-6 cm, both surfaces often puberulent on veins, apex shortly acuminate; pedicel and ovary 3-3.5 cm, glabrous. Flowers large, red or pink, usually with darker stripes, very rarely white. Dorsal sepal broadly ovate-elliptic or ovate-elliptic, 4-5 × 2.5-3 cm, glabrous, apex acuminate; synsepal ovate, 3-4 × 1.5-2 cm, apex shallowly 2-lobed. Petals not twisted, lanceolate, 4.5-6 × 1.5-2.5 cm, villous toward adaxial base, apex acuminate; lip deeply pouched, subglobose or ellipsoid, 4.5-5.5 cm, with a small mouth ca. 1.5 cm in diam., inner bottom hairy. Staminode ovate-oblong, 10-14 × 7-8 mm, abaxially not carinate, base sessile. Capsule narrowly ellipsoid, ca. 4 cm, glabrous. Fl. Jun-Jul, fr. Aug-Sep. 2n = 20, 21, 30.
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