Cystorchis Blume, Coll. Orchid. (1858) 87
Small sympodial terrestrial plants, sometimes leafless, and then with underground rhizome. Stem, if present, elongated, slightly succulent, basal part creeping, forming a rhizome, apical part erect, short. Leaves, if present, few, crowded at the stem-apex, spirally arranged, sheathing at the base, glabrous, persistent, convolute, often dark brown, herbaceous. Inflorescence terminal, a few to many-flowered raceme. Flowers small, resupinate, not widely opening. Sepals free. Petals free, about as long as the dorsal sepal, usually cohering at the apices. Lip with a very short spur, at the base usually with two blister-like swellings, each with a small wart inside, not mobile. Column-foot absent. Pollinia 2, sectile, caudicles present, stipe absent, viscidium present. Stigma lobes not separated.
Species present in New Guinea: