Plants 25-50 cm tall, with a short, stout rhizome. Stem erect, usually pubescent or glandular hairy, especially toward upper part, with several sheaths at base and 2-5 leaves above. Leaf blade elliptic or broadly elliptic, 10-15 × 4-10 cm, sparsely ciliate, apex acute or acuminate. Inflorescence terminal, 1-or rarely 2-flowered; peduncle ± with glandular hairs; floral bracts foliaceous, elliptic to lanceolate, 6-9 × 2-4 cm, pubescent on abaxial veins, apex acuminate; pedicel and ovary 2-4 cm, with dense glandular hairs. Flowers 9-10 cm in diam., usually with pale green to yellowish green sepals and petals and white lip; staminode often yellow spotted with red. Dorsal sepal broadly ovate, 2.5-3 × ca. 1.5 cm, adaxial base and abaxial surface pubescent, apex acuminate; synsepal elliptic-ovate, slightly narrower than dorsal sepal, abaxially pubescent, apex shallowly 2-lobed. Petals not twisted, linear-lanceolate, 2.5-3.5 × 0.7-0.9 cm, adaxial base pubescent, apex acuminate; lip deeply pouched, ellipsoid, dorsiventrally flattened, 2.5-3.5 cm, with a small mouth, outer surface glabrous, inner bottom hairy. Staminode suboblong, ca. 10 × 5 mm, base with a short stalk. Fl. Jun-Aug. 2n = 20.
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An orchid. It grows to about 60 cm high. It has 2-5 leaves. They are well spaced along the stems. The leaves do not have stalks. They are about 15 cm long. They are oval to sword shaped. There are 1 or 2 flowers. The flowers are white or pale yellow. The flowers are 4-6 cm long.
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