The morphological characteristics of Salix are as follows: trees or creeping, cushion-shaped, upright shrubs. The branches are cylindrical and the pith is nearly round. No apical buds, side buds are usually close to the branches, with single bud scales. The leaves are alternate, sparsely opposite, usually narrow and long, mostly lanceolate, pinnately veined, serrated or entire; petiole is short; stipules, mostly serrated, often early fall, rare and persistent. Catkin inflorescences erect or obliquely spread, first leaves open, or open at the same time as leaves, sparse after leaves open; bracts entire, hairy or glabrous, persistent, sparsely fall; stamens 2-majority, filaments free or Part or all of it; glands 1-2 (between the inflorescence axis and filaments are abdominal glands, near bracts are dorsal glands); pistil is composed of 2 carpels, ovary sessile or stalked, style length varies One, or missing, single 1 or split, stigma 1-2, split or not split. Capsule 2-valved; seeds small. How dark brown.