Roots 3-10 cm long, 2-5 mm thick, strongly flattened. Racemes suberect, peduncle slender, green, 1-4 cm long; bracts triangular, 0.5-0.8 mm long; pedicel and ovary 3 mm long, glabrous or rarely sparsely glandular pilose. Flowers 3-10, green; sepals and petals connate for 1/3-1/4 their length, free and slightly reflexed at apex; sepals 3 mm long, 0.5 mm wide, free portion oblong-ovate, petals similar, smaller, base contracted, clawed; lip together with spur 3-4 mm long, ovate-triangular, entire, with a small introrse linear appendage at apex, spur subglobose, 1 mm long, rounded; disc with a retrorse square plate at base blocking entrance of spur; column with 2 round arms apically; pollinia 4, ellipsoid-clavate, attached to an oblong stipe. Capsules elongate, terete, 1 cm long, 1.5 mm in diam.

HUALIEN: Tienhsiang, Su & Chen 9491.

Endemic, central and southern mountainous regions, from low to mid elevations.