Terrestrial. Stems cylindrical, fleshy, 5-15 cm long, 5-8 mm in diam. Leaves 2-4 (usually 3), obliquely elliptic or ovate, 5-8 cm long, 2.5-4 cm wide, apex acute, base obtuse, strongly plicate, margin +/-crispate, petiole continuous with sheath, ca. 4-5 cm long. Peduncle and eachis green, ca. 6-15 cm tall, winged; bract triangular, 1.5-2.5 mm long, reflexed; pedicel and ovary 10-15 mm long, with 6 acute ridges. Flowers 5-15, yellowish green; dorsal sepal bending backward, oblong-linear, 7.5-8 mm long, 2-2.3 mm wide, obtuse at apex, indistinctly 1-nerved; lateral sepals descending, ovate-oblong, 6.5 mm long, 2.5 mm wide, acute at apex, contracted at base, often revolute, 3-nerved; petals horizontally spreading and often slightly ascending, linear, 7-8 mm long, 0.8-1 mm wide, 1-nerved, strongly revolute; lip slightly deflexed from narrow base, cuneate-flabelliform beyond contracted middle, 6.5-7 mm long, 3-5 mm wide, apex truncately 2-lobed, lobes fimbriate toothed; disc with 2 small calli near base; column +/- arcuate, pale green or nearly whitish, 4-5 mm long, apex nearly wingless, base slightly dilated; anther cap green, with white margin, orbicular-ovate, ca. 0.8 mm long; pollinia in 2 bony masses, obliquely ovoid, ca. 0.6 mm long; rostellum white, tongue shaped, +/- recurved.

NANTOU: Chingshuikou, Su & Chung 9059*.

Myanmar, Thailand, Malaysia, Borneo, Sumatra and Java. Taiwan, central mountains at ca. 500 m.