""'Gymnanthera oblonga " "'is a species of vine in the family Apocynaceae ( previously Asclepiadaceae ) from northern Australia, southeast Asia ( Cambodia, Indonesia, Malaysia, Philippines, Thailand, Vietnam ), New Guinea, and southern China ( Guangdong, Hainan ).
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He also wrote many other works including " The evolution and distribution of flowering plants ( Apocynaceae, Asclepiadaceae ) ", " The evolution and distribution of fishes ", " Fishes the source of petroleum ", and " The quantity and sources of our petroleum supplies ".