purple flowers of rmellia clandestina ruellia tuberosa are a h

abstract background beautiful beauty biennial black bloom blossom blue botany close closeup color colorful fever field flora floral flower fresh garden green grow growth herb herbal leaf linn medicinal natural nature petal petals petunia pink plant plants pod popping purple root ruellia season spring squarrosa summer tin ting toi trai tropical tuberosa violet wild