Plants 40-60 cm tall. Rhizome slender. Stem glabrous, with 3 or 4 sheaths toward base. Leaves 5-7, ovate-lanceolate to elliptic-lanceolate, 6-13 × 3-5 cm, glabrous, base amplexicaul, apex acuminate or long acuminate. Rachis 7-10 cm, glabrous, laxly 5-10-flowered; floral bracts foliaceous, ovate-lanceolate, apex long acuminate, lower ones exceeding flowers. Flowers resupinate, rather large, yellow, yellowish brown, or rarely pale red; ovary and pedicel ca. 15 cm. Dorsal sepal elliptic, ca. 15 × 6 mm, apex acuminate; lateral sepals ovate-lanceolate, oblique, 15-16 × ca. 6 mm, apex long acuminate. Petals broadly ovate, ca. 12 × 8 mm, base broadly cuneate, apex acuminate; lip ca. 15 mm, with a broad mesochile connecting hypochile and epichile; hypochile cymbiform, with erect ovate-suborbicular lateral lobes; mesochile ca. 6 × 5 mm, lateral margins slightly protruding and obtuse-rounded, with a pair of subtriangular lamellae ca. 3.5 × 3 mm; epichile ovate-orbicular. Column ca. 6 mm including anther; anther ovoid, ca. 3 mm. Capsule ellipsoid, ca. 20 mm. Fl. Jul, fr. Sep.
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