Chromolaena oteroi, commonly known as the Mona Island thoroughwort,[2] is a species of flowering shrub in the family Asteraceae.

It has been found only on Mona Island, a small island between Puerto Rico and Hispaniola in the West Indies and politically a part of the Commonwealth of Puerto Rico.

[3][4][5] The shrub, with its pale purple flowers, was named after botanist José I.

Otero.

[3]