Salix pierotii, the Korean willow, is a species of willow native to northeast China, far eastern Russia, the Korean peninsula and Japan. They are shrubs or trees reaching . Because their twisted wood is not good for timber or making tools, in Japan Salix pierotii trees are used to demarcate property lines between farms.
Forms One form is currently accepted:
Salix pierotii f. auricomans Kimura
References