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(First upload on September 6 2016. Last on May 27 2022) [ 日本語 | English ]

Rumex L. (スイバ) gishigishi (ギシギシ, 羊蹄), Japanese dock (tentative) Lifeform: weedy, perennial forb (dioecism) ≈ 1 m in height Distribution: widespread in the East Asia, including Japan Habitat: grasslands, roadsides, river banks, satoyama, etc.

Synonyms: Rumex japonicus Houtt. var. yezoensis (H. Hara) Ohwi Rumex crispus L. var. japonicus Makino Rumex crispus L. ssp. japonicus (Houtt.) Kitam. Rumex japonicus Houtt. var. sachalinensis (Regel) H. Hara Rumex yezoensis H. Hara Rumex regelii F. Schmidt

Rumex japonicus in Japan

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[1/2] on an athletic field in Oi Pier Seaside Park, Tokyo, on June 3 2016. [3/4] in Tsurumi Green Space Park (鶴見緑地公園), Tsurumi Ward, Osaka City, on February 6 2022.