#gum_tree__gumtree  any of various trees of the genera Eucalyptus or Liquidambar or Nyssa that are sources of gum
  supertype:  tree  a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
  substance:  gumwood
  subtype:  liquidambar  any tree of the genus Liquidambar
     subtype:  American_sweet_gum__sweet_gum__sweetgum__sweet_gum_tree__sweetgumtree__bilsted__red_gum__redgum__Liquidambar_styraciflua  a North American tree of the genus Liquidambar having prickly spherical fruit clusters and fragrant sap
  subtype:  eucalyptus_tree__eucalyptus__eucalypt  a tree of the genus Eucalyptus
     subtype:  flooded_gum  any of several Australian gum trees growing on moist or alluvial soil
        subtype:  rose_gum__Eucalypt_grandis  very tall tree of Queensland and New South Wales
        subtype:  cider_gum__cidergum__Eucalypt_gunnii  small to medium-sized tree of Tasmania
        subtype:  forest_red_gum__Eucalypt_tereticornis  tall tree of Queensland and New South Wales and Victoria
     subtype:  mallee  any of several low-growing Australian eucalypts
        subtype:  white_mallee__whitemallee__congoo_mallee__Eucalyptus_dumosa  small shrubby mallee
        subtype:  black_mallee__blackmallee__black_sally__blacksally__black_gum__blackgum__Eucalytus_stellulata  small mallee with rough dark-colored bark toward the butt yielding a red eucalyptus kino
     subtype:  stringybark  any of several Australian eucalypts having fibrous inner bark
        subtype:  white_stringybark__whitestringybark__thin-leaved_stringybark__Eucalyptusd_eugenioides  stringybark having white wood
     subtype:  smoothbark  any of several Australian eucalypts having the bark smooth except at or near the base of the trunk
     subtype:  red_gum__redgum__peppermint__peppermint_gum__Eucalyptus_amygdalina  red gum tree of Tasmania
     subtype:  marri__red_gum__redgum__Eucalyptus_calophylla  very large red gum tree
     subtype:  river_red_gum__riverredgum__river_gum__rivergum__Eucalyptus_camaldulensis__Eucalyptus_rostrata  somewhat crooked red gum tree growing chiefly along rivers; has durable reddish lumber used in heavy construction
     subtype:  mountain_swamp_gum__Eucalyptus_camphora  medium-sized swamp gum of New South Wales and Victoria
     subtype:  snow_gum__ghost_gum__ghostgum__white_ash__whiteash__Eucalyptus_coriacea__Eucalyptus_pauciflora  small to medium-sized tree of Australia and Tasmania having smooth white to light-grey bark shedding in patches or strips
     subtype:  alpine_ash__mountain_oak__Eucalyptus_delegatensis  tall timber tree with hard heavy pinkish or light brown wood
     subtype:  white_mountain_ash__Eucalyptus_fraxinoides  large tree with dark compact bark on lower trunk but smooth and white above; yields lumber similar to that of European or American ashes
     subtype:  blue_gum__fever_tree__fevertree__eucalyptusglobulu  tall fast-growing timber tree with leaves containing a medicinal oil; young leaves are bluish
     subtype:  swamp_gum__swampgum__Eucalypt_ovata  medium-sized tree of southern Australia
     subtype:  spotted_gum__spottedgum__Eucalyptus_maculata  large gum tree with mottled bark
     subtype:  lemon-scented_gum__lemonscentedgum__Eucalyptus_citriodora__Eucalyptus_maculata_citriodora  similar to but smaller than the spotted gum and having lemon-scented leaves
     subtype:  Eucalyptus_regnans__mountain_ash  tree having wood similar to the alpine ash; tallest tree in Australia and tallest hardwood in the world
     subtype:  manna_gum__mannagum__Eucalyptus_viminalis  tall tree yielding a false manna
  subtype:  tupelo_tree__tupelo  any of several gum trees of swampy areas of North America
     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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