Photo: Petasites hybridus 02.

Large leaves. They're 1 m (3') tall, and a child can hide under them. Botanical garden Kaisaniemi, Helsinki, Finland. Planted. 2000-06-15.

Petasites hybridus (L.) P. G. Gaertn., B. Mey. & Scherb
Engl.: butterburr, pestilence wort, blatterdock, bog rhubarb, butter-dock, butterbur, sweet coltsfoot.
Deu.: Gewöhnliche Pestwurz, Rote Pestwurz.
Suom.: etelänruttojuuri.
Sven.: pestskråp, pestilensrot, pestrot, skråp.
Bot. syn.: Petasites officinalis Moench, Petasites ovatus Hill, Petasites vulgaris Hill, Tussilago hybrida L., Tussilago petasites L.