Rottlera
a genus of Euphorbiaceæ.
R. tinctoria is a tree very common in India, and occurring also in the Indian Archipelago, Australia, and Arabia. The three-lobed fruit is covered with a red mealy powder called in India kamala.
As people in India occasionally paint their faces with the red powder, the tree itself is sometimes called the monkeyfaced tree. It is used in the N. W. provinces of India for tanning leather. It yields a clear limpid oil, useful as a cathartic.