#tupelo_tree__tupelo  any of several gum trees of swampy areas of North America
  supertype:  gum_tree__gumtree  any of various trees of the genera Eucalyptus or Liquidambar or Nyssa that are sources of gum
  substance:  tupelo
  member of:  genus_Nyssa
  subtype:  water_gum__watergum__Nyssa_aquatica  columnar swamp tree of southeastern to midwestern North America yielding pale soft easily worked wood
  subtype:  sour_gum__black_gum__blackgum__pepperidge__Nyssa_sylvatica  columnar tree of eastern North America having horizontal limbs and small leaves that emerge late in spring and have brilliant color in early fall

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