Toxicological trivia from October 22, 2009:  Native habitat of Salvia divinorum is  in Oaxaca, Mexico, growing within shaded and moist habitat. Salvia divinorum has a long and continuing tradition of religious use as an entheogen by indigenous shamans, who use it to facilitate visionary states of consciousness during spiritual healing sessions. The indigenous shamans tribe was:
a) The Mazatec;
b) The Aztecs;
c) The Chichimecas.

Answer a. Read more in RETEL, No. 16, 29-33  Salvia divinorum Epl. & Játiva-M. -Lamiaceae "" substitute for "marijuana"?. Also in  wikipedia.