Tribe II
VANDEAE. Anther one, dorsal, operculate, incumbent, or applied to the rostellum; cells most frequently confluent; pollinia waxy, usually two or four, applied to each other in pairs, posterior and anterior. Vandeae is divided into nine sub-tribes, and contains 129 genera, the great majority being epiphytes. This group is represented almost in equal numbers in tropical Asia and America; there are many members in Madagascar, few in Africa, and very few beyond the tropics. Familiar examples are: Aerides, Odontoglossum, Oncidium, Phalaenopsis, and Vanda.