Photo: Polygonum capitatum.

Botanical name: 

Flowering plant. Nagai bot.g., Osaka, Japan. Planted. 2001-05-09.

Polygonum capitatum Buch.-Ham. ex D. Don
Engl.: pinkhead smartweed.
Suom.: nuppitatar.
Bot. syn.: Persicaria capitata (Buch.-Ham. ex D. Don) Gross.

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Photo: Polygonum capitatum.

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