Large-Leaved Plant of the Genus Petasites
Puzzle 6 of Animals with Weird Names Hard Pack
Question is: Large-Leaved Plant of the Genus Petasites
and the answer is: BUTTERBUR
Word Meaning:
BUTTERBUR — Any of several Eurasian herbs, of the genus Petasites, having dense clusters of often purple flowers.
Definitions from Wiktionary.