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(Upload on October 30 2013) [ 日本語 | English ]

Polygonum L. (タデ) Shirobanasakuratade (シロバナサクラタデ, 白花桜蓼), white-flower smartweed Lifeform: perennial forb < 2 m in height Distribution: eastern and central China - Taiwan - Korea - Japan Habitat: wetlands, abondoned rice fields, grasslands, reservoirs, ditches, riverbanks, etc. Chromosome number: 2n = 40, 44, 49 or 50

Synonyms: Persicaria japonica (Meisn.) Nakai ex Ohki var. japonica, when Persicaria is established Persicaria sterilis (Nakai) Nakai et Ohki Persicaria japonica (Meisn.) Nakai et Ohki ssp. micrantha (Nakai) Sugim., discarded var. conspicuum Nakai (サクラタデ), syn. Persicaria odorata (Lour.) Soják ssp. conspicua (Nakai) Yonek.

Polygonum japonicum in Japan

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[1-3] in Fukuoka Zoo and Botanical Garden, northern Kyushu, on September 20 2025.