On "The Tree That Grew III", on the second to top platform on the map that has mobs spawning on it, there are "Strange Green Mushrooms" which are identical to "Green Mushrooms" except they have no sound when hit, their deaths do not count towards quest completion for regular "Green Mushrooms," and they do not drop "Green Mushroom" quest specific items (Ex, plant fossils). They don't seem to be tied to any quest and I believe they are redundant.
