Photo: Petasites japonicus 3.

Botanical name: 

Flower, opening up, from above. Oulunkylä, Helsinki, Finland. Planted. 2005-04-15.

Petasites japonicus (Sieb. & Zucc.) Maxim.
Engl.: giant butterbur, Japanese sweet coltsfoot.
Deu.: Japanische Pestwurz.
Suom.: japaninruttojuuri.
Sven.: bitterskråp, bitterpestrot

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Photo: Petasites japonicus 3.

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