salix sitchensis(n = noun.plant) silky willow, sitka willow - small shrubby tree of western North America (Alaska to Oregon);
is a kind of willow, willow tree
is a member of genus salix, salix

genus salix, picea sitchensis, salix, salix alba, salix alba caerulea, salix alba sericea, salix alba vitellina, salix amygdalina, salix amygdaloides, salix arctica, salix babylonica, salix blanda, salix candida, salix caprea, salix cinerea, salix discolor, salix fragilis, salix herbacea, salix humilis, salix lasiolepis, salix lucida, salix nigra, salix pendulina, salix pendulina blanda, salix pentandra, salix purpurea, salix pyrifolia, salix repens, salix sericea, salix triandra, salix tristis, salix uva-ursi, salix viminalis, salix vitellina, sorbus sitchensis