Perennial. Rhizome long, rooting at nodes, almost glabrous, at least when adult. Leaves long-petioled; leaflets 1-2.5 cm, obovate-cuneiform, with repand to praemorse upper margin, pubescent, later glabrescent. Sporocarps inserted at base or slightly above base of petiole in groups of 2-4, each on a free pedicel twice as long as sporocarp or longer; sporocarp recurved, ellipsoidal and compressed or lenticular, rounded at apex or more or less truncate, with 2 teeth at base, appressed-hairy when young, then glabrescent; sori 5-6 on each side of the gelatinous ring. Summer.