The term 'Australian Gum Tree' refers to a variety of trees native to Australia. The crossword solutions for this term include CoolaBah (8 letters), CooliBah (8 letters), EUCALYPTUS (10 letters), Eucalypt (8 letters), and Kari (4 letters). CoolaBah and CooliBah are both species of EUCALYPTUS, which is the most common genus of Australian Gum Trees. EUCALYPTUS is a large genus of trees, with over 700 species, and Kari is a species of EUCALYPTUS found in the Northern Territory.