Soy
Glycine soja Siebold et Zucc. [Fabaceae]
Tsurumame (ツルマメ, 蔓豆)
Lifeform: trailing annual forb
Distribution: China - Korea - Siberia - Japan (in Honshu, Shikoku and Kyushu, and not in Hokkaido
Habitats: roadsides, grasslands, and forest edges
Considered to be the original strain of Glycine max (L.) Merr. subsp. max (soybean)
Synonyms
Glycine max subsp. soja (Siebold et Zucc.) H. Ohashi
Glycine formosana Hosok.
Glycine gracilis var. nigra Skvortsov
Glycine ussuriensis Regel et Maack
Glycine Willd.
G. dolichocarpa Tateishi et H. Ohashi (ナガミツルマメ)
G. koidzumii Ohwi (ミヤコジマツルマメ)
G. max (L.) Merr.
subsp. formosana (Hosok.) Tateishi et H. Ohashi (ホソバツルマメ)
subsp. max (ダイズ)
G. soja Siebold et Zucc. (ツルマメ)
G. tabacina (Labill.) Benth. (ボウコツルマメ)
G. tomentella Hayata (ヒロハヤブマメ)
Glycine soja in Japan
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[1-4] At NiPR (National Institute of Polar Research), Tachikawa City, Tokyo, on September 8 2011. [4] close-up of flowers seen in photo #3.