Verbena bonariensis
Brazilian Verbena or Brazilian Vervain, Verbena brasiliensis, is a flowering plant species from the vervain family (Verbenaceae). It is native to parts of South America, namely Brazil, but has spread its range in recent times and has occasionally become an invasive weed.
In the past, several botanists have mistakenly applied the scientific name of the Purpletop Vervain, V. bonariensis, to this species. As a consequence, the common names "Brazilian Verbena" and "Brazilian Vervain" are sometimes erroneously applied to the Purpletop Vervain.