Memecylon is a plant group in Melastomataceae. It consists of 350-400 species of small to medium-sized trees and shrubs occurring in the Old World tropics. Memecylon is a monophyletic group basal to the Melastomataceae clade. Memecylon taxa have more than 600 published basionyms. Diversity of this group is concentrated in tropical Africa, Madagascar, Sri Lanka, India and Malaysia.

Melastomataceae is a family of dicotyledonous flowering plants found mostly in the tropics comprising c. 175 genera and c. 5115 known species. Melastomes are annual or perennial herbs, shrubs, or small trees.