Trees or shrubs. Two-year-old branchlets glabrous; juvenile branchlets ± gray villous. Buds pilose. Stipules small; petiole 4-7 mm, pilose; leaf blade linear-lanceolate to ovate-lanceolate, ca. 9 × 2 cm, abaxially at first white tomentose, shiny, becoming sparsely pilose or subglabrous, adaxially with filamentous hairs, glabrescent, base rounded to cuneate, margin entire, rarely indistinctly glandular serrulate, rarely entire, apex acute to acuminate; midvein abaxially raised; lateral veins indistinct. Male catkin slender, recurved, 7-10(-12) cm × 5 mm; peduncle ca. 3 cm, with normal leaflets; rachis pilose; bracts oblong, ca. 1.5 mm, abaxially filamentous villous, apex obtuse to subtruncate. Male flower: glands 2, subequal, adaxial gland oblong or sublinear, ca. 1 mm, sometimes 2-cleft, abaxial gland rarely broader, 2- or 3-parted; stamens 2; filaments distinct or connate proximally, villous. Female catkin pendulous in fruit. Female flower: gland adaxial, sublinear, ca. 1 mm. stigma 2-lobed. Capsule ca. 3 mm, sessile, with filamentous hairs. Fl. May, fr. Jun.

* Mountains; 1600-2300 m. Sichuan