Petrea volubilis, commonly known as purple wreath, queen& x27 s wreath, sandpaper vine, and nilmani, is an evergreen flowering vin

Petrea volubilis, commonly known as purple wreath, queen& x27 s wreath, sandpaper vine, and nilmani, is an evergreen flowering vine in the family Verbenaceae, native to Tropical America, that is valued especially for its display of violet flowers