Overview
Monopodial epiphytes or rarely lithophytes. Stems concealed by persistent, imbricate leaf bases. Leaves alternate, distichous, coriaceous, conduplicate, apically bilobed. Inflorescences axillary, arching-pendent racemes. Flowers white or yellowish white. Sepals and petals free, subsimilar, spreading. Lip unlobed or obscurely three-lobed, with a long, slender, pendent spur, without any callus. Column without a foot or wings; pollinia two, each borne on a separate stipe fused at their base and attached to a common viscidium.