Shrubs. Branches glabrous. Leaf blade oblong, elliptic, obovate, or obovate-lanceolate, glabrous, margin entire, very rarely serrate distally. Flowering coetaneous. Catkins subsessile. Male flower: gland solitary, adaxial; stamens 2; filaments partly connate or connate throughout. Female flower: ovary shortly stipitate or sessile; style short; stigma oblong.