An entheogen [which generates God or the spirit inside oneself] is a psychoactive sacrament : a plant taken for a spiritual or mystical experience.

Examples :
The sacred/divine mushrooms («teonanacatl» : litt., the flesh of the gods) taken by the amerindians mazatèques in Mexico or the peyote used by the Hopis (The Native American Church).

Note that the Psilocybe semilanceata, also called Liberty Cap, grows in group on meadows (in September, for Europe), near cow or horse dungs...

The Vaults fo Erowid

An excellent american site where entheogens harmoniously go with spirituality, culture and freedom... ;-)

Conscious Dreams

 YAHOOKA

2013 - Terence Mc Kenna Land

The largest community and entheogenic library...