Japan Flora: Plant evergreen; pseudobulbs 1-6 cm. long, 5-25 mm. in diameter, green, slightly compressed and angular, 3-sheathed while young; leaves 2, linear-lanceolate to oblanceolate, &-30 cm. long, 15-40 mm. wide, acute, lustrous above; scapes with few scales; racemes 5-8 cm. long, the bracts minute or absent; flowers 10- 16; dorsal sepal oblong-lanceolate, 1G-11 mm. long, 3-4 mm. wide, subobtuse, pale yellowish green; petals slightly shorter than the sepals, linear-oblong; lip recurved, the lateral lobes obtuse, purplish at base, the terminal lobe 5-keeIed, with 1 pair disappearing toward the base; column about 3 mm. long. Nov. Epiphyte on trees, also occurring on mossy rocks;

Kyushu (Yakushima and Tanegashima); rare.