Plants slender, 15-60 cm tall. Stem leafy. Leaves 2-3(-4), linear, up to 20 x 1.5 cm. Inflorescence very long and narrow, up to 25 cm long, 0.7-1 cm broad, subsecund. Flowers numerous, ± deflexed, green. Bracts linear-lanceolate, acuminate, exceeding ovary. Dorsal sepal elliptic-oblong, 3.2 x 1.6 mm, forming a loose hood with linear, one-nerved petals; lateral sepals ± spreading 3.0 x 1.2 mm: Petals 3.0 x 0.4 mm. Labellum longer than sepals, linear, ± constricted in the middle, apical portion trifid, side-lobes variable in length but always longer than the small, triangular midlobe, straight or slightly curved inwards. Ovary sessile, slightly twisted, apex with a knee-like bent.

Fl. Per.: July-August.

Type: Described from Java, Thunberg.

Distribution: Abundant from Western Himalaya eastwards to Bhutan, Tibet, the Khasia and Naga Hills, China, Manchuria, Japan, Taiwan, Java, Timor, Celebes, and Ryukyu Island. Up to 3500 m. In Pakistan in the mountains on the eastern border.