Plants 40-55 cm tall, with a rather stout, creeping rhizome. Stem erect, pubescent and glandular hairy, with several sheaths at base and 3 or 4 leaves above. Leaf blade elliptic to ovate-lanceolate, 7-15 × 4-8 cm, sometimes hairy toward abaxial base and on veins on both surfaces, ciliate, apex acuminate. Inflorescence terminal, 2-flowered, rarely 1-or 3-flowered; peduncle and rachis pubescent and glandular hairy; floral bracts foliaceous, 5.5-10 × 1-3 cm, both surfaces pubescent on veins; pedicel and ovary 2.5-3 cm, densely glandular hairy and pubescent. Flowers ochre-brown to purplish brown, with darker venation; lip often spotted with dark brown; staminode white with a few purplish brown spots. Dorsal sepal lanceolate or ovate-lanceolate, 2.5-3.5 × ca. 1 cm, abaxially often hairy, apex cuspidate-acuminate; synsepal similar to dorsal sepal, apex deeply 2-lobed. Petals not twisted or slightly twisted, narrowly lanceolate or linear, 2.7-3.5 × 0.4-0.5 cm, apex acuminate; lip deeply pouched, subglobose to ellipsoid, 1.6-2 × ca. 1.3 cm, outside glabrous, inner bottom hairy. Staminode oblong-elliptic, 7-9 × 3.5-5 mm, base with a short but distinct stalk. Capsule subspindle-shaped or narrowly ellipsoid, 3-4 × ca. 1 cm, with sparse glandular hairs or glabrous. Fl. and fr. May-Aug. 2n = 20.
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