Ruellia brevifolia, the tropical wild petunia or red Christmas pride, is an ornamental plant in the family Acanthaceae. It is native to South America, from Colombia to southern Brazil and northern Argentina.
References
External links Pacific Island Ecosystems at Risk (PIER): Ruellia brevifolia Ruellia brevifolia (Pohl) Ezcurra (Acanthaceae): flowering phenology, pollination biology and reproduction Rev. bras. Bot. vol.25 no.1 São Paulo Mar. 2002