The "Kuromino-nishigori" (Symplocos paniculata) belongs to the family Symplocaceae. It is a small deciduous tree that is native from Kanto district of Honshu west to Shikoku and Kyushu, as well as the Jeju-do (southern Korea). This tree grows in hillsides or marshes in low mountains, and it can reach 2-8 m in height. The bark is brown to grayish brown and furrowed longitudially. The leaves are alternate, oblong with acute tips and fine serrated edges. The abundant, white flowers bloom in the panicles from May to June. The fruits are ovate-globose drupes, and ripen black in fall.