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Petasites hybridus Sturm. Fig from book PetasiteshybridusSturm UTC PetasiteshybridusSturm Johann Georg Sturm Painter Jacob Sturm derivative work Bff Cropped Bff PetasiteshybridusSturm PDold original upload log This image is derivative work of the following images File PetasiteshybridusSturm with PDold Ayacop Bytes no Fig from