in taxon plant used for medicine hoary basil plant american basil lime basil American basil hoary basil Ocimum americanum, known as American basil or "hoary basil", is an annual herb with white or lavender flowers. It is used for medicinal purposes. Despite the misleading name, it is native to Africa, the Indian Subcontinent, China, Southeast Asia. The species is naturalized in Queensland, Christmas Island, and parts of tropical America. [https://en.wikipedia.org/wiki/Ocimum_americanum] ocimum americanum Ocimum americanum requires discussion