Didymoplexis Griff., Calc. J. Nat. Hist. 4 (1844) 383, t. 17
- Genus Apetalon Wight, Icon. Pl. Ind. Or. 5 (1851) 22
- Genus Leucorchis Blume, Mus. Bot. Lugd. Bat. 1 (1849) 31
Leafless terrestrial plants lacking chlorophyll. Inflorescence a few- to many-flowered raceme arising from a tuber-like underground rhizome. Flowers opening in succession, small, resupinate, usually brownish or whitish. Sepals and petals all mutually connate for at least half their length, except that the lateral sepals are only at the base connate with the petals. Petals not much smaller than the dorsal sepal. Lip without spur, not mobile. Stigma situated near the apex of the column. Column-foot present. Pollinia 4, mealy, caudicles absent, stipe absent, viscidium present.