They are petite in size but you may be able to recognise them by their blackish purple caps and dark green stems.
Banshee Buttons are rated 6, being useful but considered dangerous. Harvesting your own Banshee Buttons should be relatively easy but do make sure to use gardening gloves when harvesting, as the spores of the toadstools have been known to cause side effects such as rashes and boils. Although they may be used in the same potions many times, they have the tendency to react differently each time.
They thrive in cool wet conditions, but have also been known to show up in a few tropical locations as well. They are also the only variety know to grow on the sides of flesh eating trees. They are one of the most flourishing varieties of toadstools around. This is partially due to the fact that they have an extremely rapid growth rate. Virtually popping up out of the ground over night!
Many dark arts potions, elixirs and formulas have this toadstool as a main ingredient. It is also frequently used to help add an additional flavour kick to Spider Cider.