Small terrestrial herbs with basal leaves or rarely with reduced cauline leaves. Leaves sessile or petiolate, membranaceous. Scape slender, simple, with several bracts. Inflorescence a terminal spike. Sepals free, similar, or the laterals often broader. Petals free or obscurely adnate to the base of the column. Lip upper-most (i. e. flowers non-resupinate), sessile or rarely unguiculate, adnate to the base or up to the middle of the column, erect, plane, concave or saccate. Column short; rostellum erect, often as long as the column; pollen granular.