[Wikipedia] Native Range, Description: Verbena tenera, commonly known as South American mock vervain, is a species of flowering plant in the verbena family.[1] It is native to Brazil, Argentina, and Uruguay, and it is present elsewhere as an introduced species and roadside weed.[2][3] It is an annual or perennial herb producing one or more stems growing decumbent to erect in form and hairy to hairless in texture. The rough-haired leaves are divided deeply into lobes. The inflorescence is a dense, headlike spike of many flowers up to 1.5 centimeters wide.[4] Each flower corolla is up to 1.4 centimeters wide and white to purple in color. (link added by Mary Ann Machi)