Answer: Invasive plant species
Notes: Ruellia elegans, also known as the Brazilian petunia, Christmas pride, or wild petunia, is native to Brazil and thrives in tropical wet biomes. Its elegant appearance gives it its name. It is one of the invasive plant species from the Acanthoideae sub-family in India, alongside Ruellia ciliatiflora, Ruellia simplex, and Ruellia tuberosa. It was introduced to the Andaman Islands and has spread to Odisha in India over the past decade. The study highlights the threat this plant poses to native biodiversity.
