Oxalis barrelieri

Oxalis barrelieri, the Barrelier's woodsorrel, or lavender sorrel, also commonly called in French trèfle, oseille-marron, or oseille-savane, is a plant from the genus Oxalis.

Description
The plant grows to a height of 20–150 cm and has pink flowers with a greenish or yellow base (Smith, 1985; pp. 624–625). Leaflets on the stems generally have three leaves attached to the center (Smith, 1985; pp. 624–625).

Distribution
It is native to the West Indies, as well as Central and South America. It was introduced into parts of Africa, Sri Lanka, New Guinea and Southeast Asia. It is considered a weed in the Caroline and Mariana Islands and in Samoa.