From Discworld MUD Wiki
A swamp mushroom is a mushroom that looks like:
This is a tiny, black mushroom, collected from the southern side of a tree at midnight in the deepest Genuan swampland. It gives off a slightly stomach churning aroma, making it somewhat unappetising.
It is poisonous.
This mushroom can be found in the following locations:
- Herb stall in Genua