Botanomancy is the art of divination by burning branches of trees or herbs.1 The most common branches used are vervain and briar.2 The fire and the smoke are both read to indicate which course of action should be taken.2
References
References
- Geoffrey Taylor (December 7, 1987). "Terms Of Reference: Why Pythagoras never had a theorem on brochomancy". The Guardian.
- "Botanomancy". The Element Encyclopedia of the Psychic World. Harper Element. 2006. p. 84.