#poplar_tree__poplar  any of numerous trees of north temperate regions having light soft wood and flowers borne in catkins
  supertype:  #angiospermous_tree__angiospermoustree__flowering_tree__floweringtree  any tree having seeds and ovules contained in the ovary
  subtype:  #balsam_poplar  #white_poplar  #gray_poplar  #black_poplar  #cottonwood  #aspen
  substance:  #poplar
  member of:  #genus_Populus__Populus  a genus of trees of the family Salicaceae that is found in the northern hemisphere; poplars
     member of:  #family_Salicaceae__Salicaceae__willow_family  two genera of trees or shrubs having hairy catkins: Salix; Populus
        member of:  #order_Salicales__Salicales  coextensive with the family Salicaceae
           member of:  #class_Dicotyledones__Dicotyledones__Dicotyledonae__class_Dicotyledonae__Magnoliopsida__class_Magnoliopsida  comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves; divided into six (not always well distinguished) subclasses (or superorders): Magnoliidae and Hamamelidae (considered primitive); Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae
              member of:  #class_Angiospermae__Angiospermae__Magnoliophyta__division_Magnoliophyta__Anthophyta__division_Anthophyta  comprising flowering plants that produce seeds enclosed in an ovary; in some systems considered a class (Angiospermae) and in others a division (Magnoliophyta or Anthophyta)
                 member of:  #division_Spermatophyta__Spermatophyta  seed plants; comprises the Angiospermae (or Magnoliophyta) and Gymnospermae (or Gymnospermophyta); in some classification systems Spermatophyta is coordinate with Pteridophyta (spore producing plants having vascular tissue and roots) and Bryophyta (spore producing plants lacking vascular tissue and roots)
                    member of:  #kingdom_Plantae__Plantae__plant_kingdom__plantkingdom  taxonomic kingdom comprising all living or extinct plants

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