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(First upload on February 5 2012. Last on October 25 2017) [ 日本語 | English ]

Dioscorea L. (ヤマノイモ) Nagaimo (ナガイモ, 長芋), Chinese yam Lifeform: perennial vine Distribution: Native to eastern Asia, not included Japan (introduced to Japan in or before 17th century) Habitat: moist, and disturbed sites

Tuber (and other organs): edible → wild vegetable (山菜) Vine: twining clockwise Synonyms: Dioscorea batatas Decne., often used Dioscorea opposita Thunb., nom. illeg.

Dioscorea polystachya in Hokkaido

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4 5 6
[1] at the backyard of Japanese Archery Training Hall, Hokkaido University, on July 27 2015. [2-6] climing up a hedge at N28/E3, East Ward, Sapporo. [1-4] on August 18 2011. [5] on September 26 2014. Who transplanted this? I did not think this was Chinese yam when I saw this at the first time in fornt of the apartment. [6] on August 15 2017.