Description from Flora of China
Herbs, terrestrial or occasionally lithophytic. Stems mostly buried in soil, globose corms or elongate, small canes, of many nodes, decaying within several months after new corms produced. Leaves 2 or 3, rarely to 5, deciduous, linear-lanceolate, plicate, sheathing. Inflorescences several, emerging above leaves; rachis whitish or tan to pale green, branched or unbranched, with several tightly appressed brownish bracts; floral bracts loosely appressed, pinkish fading to brown. Flowers numerous, not resupinate, basally gibbous, perianth reflexed downward, pink to nearly white; ovary suberect. Sepals spreading, oblanceolate, basally connate forming a tube, apically free. Petals spreading or strongly reflexed, elongate, spatulate, obtuse, connate basally, free apically; lip basally adnate to column, apically expanded and 3-lobed, with longitudinal red to purple lines and spots. Column whitish to pink, apex dilated and abruptly incurved, lacking wings and a foot; anther cap pale yellow, 2-locular; pollinia 4, soft, without caudicle and viscidium. Capsule fusiform.
One species: Bangladesh, Bhutan, Cambodia, China, N India, Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam.
(Authors: Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood)