Plants 10-35 cm tall. Stems erect, slender, shortly hirsute. Leaves sessile, oblong, 2-4 cm long, 1-2 cm wide, rounded to acute at apex, contracted into a sheath at base and embracing stem. Racemes laxly 3-10-flowered; bracts lanceolate, 1.5-2.5 cm long, 0.5-1.5 cm wide, acute; pedicel and ovary 8-14 mm long, shortly hirsute. Flowers pale green, with pale purple lip; dorsal sepal oblong, 8.5 mm long, 2.6 mm wide, rotundate-acute at apex; lateral sepals broadly ovate, 8 mm long, 3 mm wide, obtuse at apex, rotundate and oblique at base; petals obliquely ovate-oblong, 7 mm long, 2 mm side, acute or obtuse at apex; lip purple stripes, obcordate or obtriangular, 8-12 mm long, 6-10 mm wide, truncate and retuse or emarginate at apex, clawed at base and produced into a short spur, crisped along margins, disc with 3 hirsute keels, spur conic, 5 mm long, with wide mouth about 4 mm across; column about 4 mm tall including anther.

NANTOU: Ruantashan, Kawakami & U.Mori 3482; Toroko, Mori s. n*. June 1907. PINGTUNG: Laiyi, Matsuda 1114.

China, northeast India, Myanmar, Vietnam and Thailand. Taiwan, rarely found on slightly shaded rocky slopes from 1,000 to 3,000 m in elavations, growing among shrubs or grasslands.