Overview
Caespitose terrestrials arising from corms, rarely with rhizomes. Leaves two, plicate, petiolate, the petioles jointly enclosed in papery tubular bracts. Inflorescences erect long-pedunculate racemes, basal, enclosed in the petiolar bracts, the floral bracts inconspicuous. Flowers cupped. Sepals and petals free, spreading, the dorsal sepal and petals forming a hood overthe column. Lip unlobed, clawed, flexibly hinged to the column foot, without callus. Column stout, arching, with subterminal wings and a short foot; pollinia 4, on a common stipe and viscidium.