Leaves long-lanceolate, base little differentiated to triangular or narrowly elliptic, shoulders absent, distal laminal margins plane or erect, apex broadly channeled or plane, acute, mucro very strong, of 6-10(-14) cells; costal adaxial stereid band smaller than the abaxial; distal laminal cells 8-10 µm wide. Sexual condition cladautoicous. Seta very short, less than 0.05 cm not including the vaginula. Capsule cleistocarpic, round, with a short-rostrate or conic, occasionally angled or curved apiculus.