刺楸属 ci qiu shu

Trees, deciduous, hermaphroditic. Stems and branches often armed with prickles. Leaves simple, palmately lobed, borne on long and short shoots, margin serrate; stipules united with petiole, sheathing at base. Inflorescence a terminal, corymbose panicle of umbels, glabrous. Pedicels not jointed below ovary. Calyx shortly 5-toothed. Petals 5, valvate. Stamens 5. Ovary 2-carpellate; styles united at base, 2-cleft apically. Fruit a drupe, subglobose. Seeds flat; endosperm uniform.

One species: E Asia.

Lower Taxon

• Kalopanax septemlobus (Thunberg) Koidzumi