Petasites spurius (Retz.) Rchb. [ Tussilago spuria Retz.]
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Petasites spurius (Retz.) Rchb. [ Tussilago spuria Retz.] [Compositae]
J.F.P. Dreves, F.G. Hayne, Bot. Bilderb., vol. 5 : t. 5 (1803)