Bijdr. (1825) 381
Small monopodial epiphytes. Stem elongated, with several leaves arranged in two rows. Leaves sheathing at the base, glabrous, deciduous, duplicate, very fleshy. Inflorescence lateral, short, a raceme or carrying a single flower. Flowers small to very small, resupinate, green or yellowish. Sepals free. Petals free, narrower and often shorter than the dorsal sepal. Lip without spur, not mobile. Column-foot absent. Pollinia 4, equal-sized, solid, caudicles absent, stipe present, viscidium present.
Southeast Asia, Indochina, Malaysia, Indonesia, the Philippines, Papua New Guinea. About 15 species; in New Guinea one, endemic, species [Adenoncos papuana Schltr.].
Epiphytes in lowland and hill forest.
A genus of inconspicuous little monopodial plants with rigid stems, fleshy leaves and small, often green flowers of relatively simple structure on short inflorescences.