Rouge plant, Rivina humilis, is a small, perennial, shrub native to Arkansas, Arizona, Florida, Hawaii, Louisiana, New Mexico, Oklahoma, and Texas. It is in the Phytolaccaceae, or pokeweed, family. Other common names include bloodberry, pigeon berry and coral berry.
It grows to about three feet in height and can be found growing in woodlands, hammocks, and disturbed sites. In the home landscape it grows in the partial shade underneath trees.