About Rubia argyi (H.Lév. & Vaniot) H.Hara
Rubia argyi, with the full scientific name (H.Lév. & Vaniot) H.Hara, is a species of flowering plant in the Rubiaceae family. One of its common names is East Asian madder. This plant is a herbaceous perennial vine, and it is native to southern and eastern China, Taiwan, Japan, and Korea. Its stems can grow to 2 meters (6 feet 7 inches) in length or longer.