ウェブキンポウゲ科オウレン属の常緑多年草で、学名は Coptis japonica。 英名はありません。 "Ohren" belongs to Ranunculaceae (the Buttercup family). It is an evergreen perennial herb that is distributed from Hokkaido south to Honshu and Shikoku of Japan. This herb grows in woods and can reach about 40 cm in height. Rhizomes are creeping sideways.