Ultra Mushroom

The Ultra Mushroom is a mushroom in Super Mario RPG: Legend of the Seven Stars,The Paper Mario series,and the Mario & Luigi games,it refills Max HP to one party member in Mario RPG, but is used differently in the other games,Mario and Luigi games refill 120,80 or 100 HP from game to game,and in Super Paper Mario, it heals 50 HP, while the previous games are the same as Mario RPG, and their carry-on equivalent is the  Ultra Shroom Shake.

It can be also a ingredient in Paper Mario and Paper Mario: The Thousand Year Door.

Its Japanese name is ウルトラキノコ [1]

meaning Urutora Kinoko.

Its Paper Mario sprite looks like a 1-up Mushroom.