Notes For Reference:-

Species, Varieties, or Forms in the Genus Dioscorea:

Dioscorea bulbifera / Nigakashuu
Dioscorea japonica / Yamanoimo
Dioscorea quinqueloba / Kaededokoro
Dioscorea tokoro / Onidokoro
　

Dioscorea tokoro / Onidokoro オニドコロ

Dioscorea tokoro: A perennial vine herb common in fields and mountains, and its rhizomes are thick and crawl sideways. Leaves are alternate, 5-12cm in both length and width, in the shape of a concentrically to triangularly cordate, with long-pointed tips. Peduncles, 3-7cm long, bear no bulbils at the bases. Dioecious: Male inflorescences are erect from axils and bear small, light green flowers with six stamens, and female inflorescences hang. Capsules are positioned with their faces upward, featuring three wings. Bloom time: July-August.