From the Super Mario Wiki, the Mario encyclopedia
The Shriveled Mushroom is an item in Paper Mario: The Origami King. It is a dried Mushroom that can be found in Whispering Woods. Pulling a vine on a tree causes a group of large leaves to fall, and the Shriveled Mushroom can be obtained by matching the two leaves depicting it by hitting them with the Hammer. It can be thrown into a spring in Whispering Woods, causing it to return to being a Mushroom that can be used to heal Mario.
Names in other languages