Collabium Blume, Bijdr. (1825) 357
- Genus Collabiopsis S.S.Ying, Col. Illust. Indig. Orch. Taiwan 1 (1977) 112
Sympodial terrestrial plants with short to long rhizomes. Pseudobulbs consisting of one internode, rather slender, one-leaved. Leaves not sheathing at the base, glabrous, plicate, not deciduous, convolute, often with dark spots, thin-textured. Inflorescence a terminal raceme arising on a specialised leafless shoot. Flowers medium-sized, resupinate (often only partly so), usually somewhat asymmetric. Sepals free. Petals more or less intermediate in shape and size between the dorsal sepal and the lateral sepals. Lip without spur (but the column-foot is provided with a spur!), three-lobed, at the base with two abruptly raised fleshy crests, not mobile. Column-foot present, provided with a short spur. Pollinia 2, solid, caudicles, stipe, and viscidium absent.
Species present in New Guinea: