#hemlock_tree__hemlocktree  an evergreen tree
  supertype:  conifer__coniferous_tree  any gymnospermous tree or shrub bearing cones
  substance:  hemlock
  member of:  genus_Tsuga
  subtype:  eastern_hemlock__Canadian_hemlock__spruce_pine__Tsuga_canadensis  common forest tree of the eastern United States and Canada; used especially for pulpwood
  subtype:  Carolina_hemlock__Tsuga_caroliniana  medium-sized evergreen of southeastern United States having spreading branches and widely diverging cone scales
  subtype:  mountain_hemlock__black_hemlock__blackhemlock__Tsuga_mertensiana  large evergreen of western United States; wood much harder than Canadian hemlock
  subtype:  western_hemlock__westernhemlock__Pacific_hemlock__west_coast_hemlock__Tsuga_heterophylla  tall evergreen of western North America; commercially important timber tree

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