Red and green spotted mushroom
From Discworld MUD Wiki
A red and green spotted mushroom is a mushroom that looks like:
This is a very strange looking mushroom. Not only is it excitingly coloured, it is shaped vaguely like a cross between a frog and a llama. It looks nice and fresh.
When eaten, it causes you to hallucinate in the same way that gazing into a zodiac charm does.
This mushroom can be found in the following locations: