Alstonia is a widespread genus of evergreen trees and shrubs, of the family Apocynaceae. It was named by Robert Brown in 1811, after Charles Alston (1685–1760), professor of botany at Edinburgh from 1716-1760.
The type species Alstonia scholaris (L.) R.Br. was originally named Echites scholaris by Linnaeus in 1767.
Alstonia consists of about 40-60 species (according to different authors), native to tropical and subtropical Africa, Central America, southeast Asia, Polynesia and Australia, with most ...
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