#wingnut  any tree of the genus Pterocarya; fruit is a small winged nutlet; Caucasus to southeastern Asia
  supertype:  nut_tree__nuttree  tree bearing edible nuts
  member of:  genus_Pterocarya
  subtype:  Caucasian_walnut__Pterocarya_fraxinifolia  medium-sized Caucasian much-branched tree distinguished from other walnut trees by its winged fruit

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