Plants 25-38 cm tall. Stem erect, glabrous, with several sheaths at base and 3 leaves above. Leaf blade elliptic-ovate or elliptic, 6-13 × 3.6-7.5 cm, both surfaces sparsely pubescent on veins, occasionally with glandular hairs toward apex and base, apex acuminate or acute. Inflorescence terminal, with 1 flower; floral bracts ovate or ovate-elliptic, 6-8 × 3-4 cm, sparsely pubescent, apex acuminate or acute; pedicel and ovary 3.5-4.1 cm, occasionally with glandular hairs toward apex. Flower greenish yellow. Dorsal sepal ovate-elliptic, 3.3-3.8 × 1.5-1.7 cm, apex acuminate; synsepal ovate to lanceolate, 3.3-3.8 × 1.2-1.5 cm, apex shallowly 2-lobed. Petals not twisted, obliquely lanceolate, 3-4 × 0.9-1.2 cm, adaxial base pubescent, margin slightly undulate, apex acuminate; lip pouched, subellipsoid, 3-3.6 cm, inner bottom hairy; incurved lateral lobes to 1 cm wide. Staminode subovate-oblong, ca. 1 cm, with a longitudinal groove centrally, glabrous. Fl. unknown.
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