Small, epiphytic orchids with a monopodial growth habit. Plants with very short stems (no pseudobulbs) and thin, hair-like roots. Leaves distichous, thick, fleshy, channelled. Inflorescence racemose, short, thin or thick and fleshy. Flowers tiny, often non-resupinate, usually white. Tepals of similar shape and size, not spreading widely. Bases of lateral sepals fuse to margins of column foot. Labellum attached to apex of column foot. Labellum lamina obscurely 3-lobed.