- dwarf gray willow, sage willow, Salix tristis - willow shrub of dry places in the eastern United States having long narrow leaves canescent beneath
--1 is a kind of willow, willow tree
--1 is a member of Salix, genus Salix - hoary willow, sage willow, Salix candida - North American shrub with whitish canescent leaves
--2 is a kind of willow, willow tree
--2 is a member of Salix, genus Salix