root | cellular organisms | Eukaryota | Viridiplantae | Streptophyta | Streptophytina | Embryophyta | Tracheophyta | Euphyllophyta | Spermatophyta | Magnoliopsida | Mesangiospermae | eudicotyledons | Gunneridae | Pentapetalae | rosids | fabids | Malpighiales | Salicaceae | Saliceae | Salix | Salix exigua | Salix exigua var. hindsiana