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The Collaborative International Dictionary

Alstonia \Alstonia\ n. 1. 1 genus of evergreen trees or shrubs with white funnel-shaped flowers and milky sap; tropical Africa to southeast Asia and Polynesia.

Syn: genus Alstonia.


Alstonia is a widespread genus of evergreen trees and shrubs, of the dogbane plant 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.