Overview
Terrestrials or rarely epiphytes. Pseudobulbs cormose or absent. Leaves few, usually lanceolate. Inflorescences racemes, usually erect, long-scapose, densely-flowered, the floral bracts insignificant. Flowers cupped, often fragrant, white to yellow, usually marked with purple. Sepals and petals free, spreading, subsimilar, subequal. Lip three-lobed, the lateral lobes erect, the midlobe transverse, the callus fleshy, basal, erect. Column stout, lightly arching, +/- broadly winged at the apex, the clinandrium +/- hooded’ pollinia 4; sessile on a common viscidium.