瘦叶杨 shou ye yang

Trees to 8 m tall. Two-year-old branchlets gray-brown; 1-year-old branchlets ± puberulent; juvenile branchlets terete, densely rigidly puberulent. Leaves of short branchlets with petiole thin, terete, 1-4.5 cm, puberulent; leaf blade lanceolate or ovate-lanceolate, 5-8.5 × 1.4-3.4 cm, abaxially pale, adaxially dark green, pubescent, hairy along veins, base cuneate or obtuse, margin with glandular crenate saw teeth, ciliate, apex long acuminate; lateral veins raised on both surfaces, 5-7 on each side. Fruiting catkin to 16 cm; peduncle and rachis rigidly puberulent. Disc entire or irregularly crenate. Capsule ovoid, ca. 4 mm, glabrous, 3- or 4-valved; stipe ca. 1 mm. Fr. Jun.

* Mountains; 3100-3200 m. W Sichuan (Kangding Xian)