Gum trees are common names for smooth-barked trees and shrubs in several genera:

• Eucalypteae, particularly:
  • Eucalyptus, which includes the majority of species of gum trees.
  • Corymbia, which includes the ghost gums and spotted gums.
  • Angophora, which includes the Sydney red gum (Angophora costata)
• Black gum, Nyssa sylvatica
• Sweetgum, Liquidambar spp.
• Water gum, Tristaniopsis laurina