Dioecious shrub, up to 0.6 m tall, with slightly angular internodes. Leaves lanceolate or narrowly obovate-lanceolate, dark green above, paler below, margins slightly revolute. Male flowers in small clusters; females solitary, larger than males.
Dioecious shrub, mostly 30-60 cm. Leaves oblanceolate to obovate, often very small on coppicing plants, margins minutely toothed, usually slightly revolute. Flowers axillary, males few in tight clusters, females solitary on short pedicels.