#scrub_oak  any of various chiefly American small shrubby oaks often a dominant form on thin dry soils sometimes forming dense thickets
  supertype:  #oak_tree__oaktree__oak  a deciduous tree of the genus Quercus; has acorns and lobed leaves; "great oaks grow from little acorns"
  subtype:  #bear_oak__Quercus_ilicifolia  shrubby oak of southeastern United States usually forming dense thickets
  subtype:  #blackjack_oak__blackjackoak__blackjack__jackoak__Quercus_marilandica  a common scrubby deciduous tree of central and southeastern United States having dark bark and broad 3-lobed (club-shaped) leaves; tends to form dense thickets
  subtype:  #myrtle_oak__seaside_scrub_oak__seasidescruboak__Quercus_myrtifolia  small evergreen shrub or tree of southeastern United States; often forms almost impenetrable thickets in sandy coastal areas

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