Publication: Fl. Amer. Sept. 2: 611. 1813.
Origin: Native
selected vouchers: WTU
Notes: FNA7: "Salix planifolia forms natural hybrids with S. alaxensis var. alaxensis, S. argyrocarpa, S. brachycarpa var. brachycarpa, S. candida, S. drummondiana, S. humilis, S. pellita, S. pulchra, and S. scouleriana. Hybrids with S. glauca var. cordifolia have been reported (C. K. Schneider 1921) but no convincing specimens have been seen."
References: (none)
Infraspecies: