gum tree: any of various trees of the genera Eucalyptus or Liquidambar or Nyssa that are sources of gum
tree: a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
ixodes scapularis: parasitic on mice of genus Peromyscus and bites humans; principal vector for Lyme disease in eastern United States (especially New England); northern form was for a time known as Ixodes dammini (deer tick)