The Magic mushroom reference article from the English Wikipedia on 24-Jul-2004
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Magic mushroom

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Magic, sacred or psychedelic mushrooms are any fungi with hallucinogenic properties, or more specifically those of the genus psilocybe (whose active ingredient is psilocybin). These belong to the Agaricaceae family and tend to grow on cow dung and bruise with a bluish/purplish color, often still visible on dried stems.

Examples of magic mushrooms are Psilocybe cubensis, and Liberty cap (Psilocybe semilanceata).

Fly Agaric is another popular hallucinogenic muschroom, whose alkaloids however are both chemically and symptomatically unrelated to psilocybin.

A list of slang terms for psychedelic mushrooms is given below: