-Plants (Kingdom Plantae)

-Vascular Plants (Phylum Tracheophyta)

-Flowering Plants (Subphylum Angiospermae)

-Dicots (Class Magnoliopsida)

-Mints, Plantains, Olives, and Allies (Order Lamiales)

-Acanthus Family (Family Acanthaceae)

-Subfamily Acanthoideae

-Tribe Ruellieae

-Subtribe Ruelliinae

-Ruellias (Genus Ruellia)

-Ruellia paniculata

The native range of this species (also known as wild petunia) is Mexico to Brazil, Caribbean. It is a subshrub or shrub and grows primarily in the wet tropical biome.