- Sitka willow, silky willow, Salix sitchensis - small shrubby tree of western North America (Alaska to Oregon)
--1 is a kind of willow, willow tree
--1 is a member of Salix, genus Salix - silver willow, silky willow, Salix alba sericea, Salix sericea - North American willow with grayish silky pubescent leaves that usually blacken in drying
--2 is a kind of willow, willow tree
--2 is a member of Salix, genus Salix