Plants 19-21 cm tall. Stem ascending, ca. 2 mm in diam., 3-leaved. Leaves abaxially purplish red, adaxially blackish green with golden-red venation, ovate, 3.5-4 × 3-3.2 cm, apex acute; petiole-like base and tubular sheath 1-2 cm. Peduncle pale purplish red, ca. 12 cm, with 2-4 pale purplish red sterile bracts; rachis 2-2.5 cm, 3-or 4-flowered; floral bracts pale purplish red, lanceolate, ca. 6 mm, shorter than ovary, outer surface pubescent, apex acuminate. Flowers erect, not resupinate, white, foetid; ovary and pedicel cylindric-fusiform, not twisted, ca. 13 mm, pubescent. Sepals purplish red, outer surface sparsely pubescent, 1-veined; dorsal sepal ovate-elliptic, cymbiform, ca. 7 × 2 mm, apex acute; lateral sepals spreading, narrowly oblong-obovate, oblique, 7-8 × ca. 3.2 mm, apex acute to shortly mucronate. Petals pinkish white, ovate, strongly oblique, falcate, ca. 7 × 3 mm, 1-veined, apex acute; lip white, Y-shaped, ca. 13 mm; hypochile ca. 3 mm; mesochile reflexed sharply downward from apex of hypochile, ca. 4 mm; flanges subsquare, 3-3.5 × 3-3.5 mm, margin fimbriate, divided into 5 teeth, each tooth ca. 1.5 mm; epichile longitudinally dilated, 2-lobed; lobes diverging at an acute angle to one another, oblong to oblanceolate, ca. 5 × 2 mm, entire, apex obtuse; spur conic, ca. 6 mm, apex shallowly bilobed, containing 2 subcuneate calli. Column ca. 5.5 mm, stout, with 2 broad, oblong wings; stigma lobes elliptic. Fl. Aug-Sep.
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