Epiphytic monopodial herbs; stems short, leafy; roots arising at stem base.
Lip entire, concave, clasping the column, spurred at the base.
Leaves distichous, conduplicate, linear or ligulate.
Inflorescences arising in leaf axils, many-flowered.
Flowers rather fleshy, white or creamy-yellow.
Sepals and petals subsimilar.