Aceriphyllum Engler.

Herbs perennial. Rhizome brown, thick, scaly. Leaves all basal, long petiolate; leaf blade broadly ovate to orbicular, base cordate, margin 5-7(-9)-cleft, lobes serrate at margin. Inflorescence cymose, ebracteate, many flowered. Flowers showy. Sepals 5 or 6. Petals 5 or 6(or 7), shorter than sepals. Stamens 5 or 6(or 7), alternate with and shorter than petals. Carpels 2, proximally connate; ovary subsuperior, proximally 2-loculed with axile placentation, distally 1-loculed with marginal placentation; ovules many; styles 2. Fruit a capsule. Seeds numerous, small.

A second species, Mukdenia acanthifolia Nakai (J. Jap. Bot. 17: 684. 1941), has been described from Korea, but it is doubtfully distinct from M. rossii.

One species: China, Korea.

(Authors: Pan Jintang ; Douglas E. Soltis)