Throat strongly plicate; no gular pouch. The columella is vertical, not plicate. The columella is oblique, plicate within and quadridentate. On each stems grows one large, thin, plicate leaf with a sharply defined midrib. The mouth is distinctive, consisting of a tiny horizontal slit surrounded by strongly plicate lips. The outer lip is finely plicate within. In many gastropods, the filamentous gill has been replaced by a "plicate", or folded, structure. The shell is finely flexuously longitudinally plicate with about twenty plicae. The stem has alternating, plicate leaves. When the teeth are rib-like it is described as "plicate" or "lamellate". The plant consists of two plicate leaves near the ground. These pseudobulbs carry on their top 6 to 7, narrowly ligulate-lanceolate, acute, plicate, leathery leaves. He used somewhat different terminology for vernation, namely applanate (flat), explicative (plicate), and supervolute (convolute). The umbilicus is white, and smooth within the strongly radiately plicate marginal rib, smooth. The shell is thin, delicate, pale chestnut, angulated, feebly plicate, spiralled, subscalar.