Overview
Caespitose epiphytes. Pseudobulbs cylindric to club-shaped with a stipitate base, unbranched or forming superposed chains of pseudobulbs by branching from the apex of the previous pseudobulb, +/- producing adventitious roots and independently viable plantlets. Leaves 1--3, linear to elliptic. Inflorescences terminal subsessile racemes or rarely panicles, one to several, the floral bracts usually inconspicuous. Flowers cupped, mostly in shades of white, green, and brown. Sepals and petals free, spreading, subsimilar, subequal. Lip unlobed to three-lobed, sessile or short-clawed, often strongly recurved near the middle, +/- callus. Column straight, +/- wings, with short foot; pollinia 4 or 6, in two groups, each group sessile on one of two viscidia.