Terrestrial perennial herbs with fleshy ellipsoid tuberoids. Stems erect, with several cauline leaves. Leaves alternate, closely spaced, usually elliptic or oblong, reducing in size upward and becoming bract-like. Inflorescence terminal, with several racemose flowers; bracts often erect, leafy, usually equal or longer than flowers. Flowers rose, purple to pale purple, resupinate; sepals free, dorsal one erect, concave, lateral ones larger than dorsal one, often spreading or reflexed; petals nearly erect, usually connivent with dorsal sepal forming a hood; lip adnate to base of column, spreading or reflexed, often obcordate, not divided, base saccate or shortly spurred, apex retuse or shallowly lobed; column short and stout; anther terminal, erect, basally connate with column, 2-celled, cells separated, parallel and proximate, with auricles or staminodes on outer sides; pollinia 2, sectile, with short caudicle attaching to viscidium; stigma entire, on a concave surface below rostellum; rostellum slightly protruding, conduplicate and roof-like.
About 30 species, distributed from tropical Africa to Asia, mainly in south Africa and Madagascar. One species in Taiwan.