what kind of plant is a gum tree
Gum tree is a common name for smooth-barked trees and shrubs in three closely related genera of Eucalypt 1  : Eucalyptus, which includes the majority of species of gum trees. 2  Corymbia, which includes the Ghost gums and Spotted gums. 3  Angophora, which includes the Sydney red gum.um tree is a common name for smooth-barked trees and shrubs in three closely related genera of Eucalypt 1  : Eucalyptus, which includes the majority of species of gum trees. 2  Corymbia, which includes the Ghost gums and Spotted gums. 3  Angophora, which includes the Sydney red gum.