Epigeneium Gagnep.
著頦蘭屬
Epiphytic or lithophytic herbs with creeping rhizomes and pseudobulbs. Pseudobulbs with 1 internode, obliquely ovoid, often angular, prostrate, arranged in rows, apex asceuding, with a solitary leaf. Leaves elliptic to obovate, coriaceous, without sheath at base, articulated with pseudobulb. Flowers solitary, with short peduncle covered by tubular sheath; sepals unequal, dorsal one short and smaller, lateral ones longer and oblique, adnate to lower half of foot of column forming mentum; petals more or less oblique, adnate to upper half of foot of column; lip 3-lobed, lateral lobes erect, central lobe usually down curved, disc often keeled; column with long, broad foot; anther terminal, incumbent, operculate, 2-celled; pollinia 4, 2 collateral pairs, without caudicle or viscidium; stigma undivided, concave; rostellum semiorbicular, unlobed.
About 30 species, from southern China, India and the Himalaya through Indochina and the Philippines to Papua New Guinea. Two species in Taiwan.
