Acorus

Sweet flag are 2 species of rhizomatous perennials, often found in swamps, shallow water and wet places. Linear, scented leaves and rhizomes. The foliage is used in Chinese herbal medicine and has been an ingredient in scared oils for anointing altars. Acorus, deemed a primitive genus of monocots (grasses and grass-like plants) and the only genus in Acoraceae.