1) Australian eucalyptus 
(Liquidambar) Liquidambar is the botanical name for the Sweet Gum trees. L. styraciflua is a native of eastern North America. It can grow up to a height of 100 to 130 feet. The leaves of this tree are arranged alternately on the branches. They are star-shaped with usually five (sometimes seven), pointed lobes, which are finely toothed. When crushed...