What is the biggest flowering tree?
The swamp gum, or Australian mountain ash (Eucalyptus regnans, family Myrtaceae), is an unrelated species native to southeastern Australia. The tree can reach heights over 114 metres (375 feet) and is the tallest angiosperm (flowering plant) species. Eucalyptus deglupta. Eucalyptus deglupta is a species of tall tree, commonly known as the rainbow eucalyptus, Mindanao gum, or rainbow gum that is native to the Philippines, Indonesia, Timor Leste and Papua New Guinea.