The vine is very vigorous, with purple shoots.The deciduous leaves are large (15 to 30 cm in diameter), simple, orbicular, toothed, with deep petiole. First green, they turn red-orange in autumn.
Wild vines can be male, female or hermaphrodite. Clusters are large with small berries and large purple seeds. It is found in the mountainous regions of Japan and up to 1300 m altitude in Korea.