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(Upload on December 23 2015) [ 日本語 | English ]

Polygonum L. (タデ) Tsurudokudami (ツルドクダミ, 蔓毒溜), tuber fleeceflower Lifeform: herbaceous perennial vine, with large tuberous roots Distribution: originally in central and southern China (exotic to Japan, reported from south to Honshu Island) Habitat: woods in the original regions (roadsides, crop fields, etc.) Use: medicine (何首烏) → introduced for medicine and escaped

Synonyms: Fallopia multiflora (Thunb.) Haraldson Pleuropterus multiflorus (Thunb.) Turcz. ex Nakai Reynoutria multiflora (Thunb.) Moldenke var. hypoleucum (Ohwi) T. S. Liu, S. S. Ying et Lai (タイワンツルドクダミ) Synonyms: Polygonum hypoleucum Ohwi

Polygonum multiflorum in Japan

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[1] on a paved road adjacent to Hama-rikyu Gardens, Tokyo, on November 13 2015.