The "Hime-kozo" (Broussonetia kazinoki) belongs to Moraceae (the Mulberry family). It is a small deciduous tree that is distributed southward from Iwate prefecture of Honshu to Shikoku, Kyushu in Japan, as well as Taiwan, the Korean Peninsula and southern China. This tree grows in montane forest edges and can reach 2-5 m in height. The leaves are asymmetric ovate and non-laciniate or deep bilobate to trilobate. The petioles are about 1 cm long. The ball-shaped clusters are borne on the axiles from April to May. The female clusters have long filaceous styles. The fruits ripen red in early summer and edible. This tree has been used to Japan paper making by its fibres of bark. In Taiwanese Chinese, it is called "小構樹", and its Chinese name is "楮" (chu).