purple flowers ruellia tuberosa linn. waterkanon, watrakanu, minnieroot, iron root, feverroot, popping pod, trai-no, toi ting (tha

acanthus annual background beauty bloom color cracker crop fever feverroot field flora floral flower flowers green ground growth health herb herbal herbs horizontal image iron leaf medicinal medicine minnie minnieroot nature picture plant pod popping purple root rosa rubella ruellia season thai thailand ting toi tradition trai trajan treatment tube tuberosa violet waterkanon watkins watrakanu