Botanomancy

Webster's Dictionary

(n.) An ancient species of divination by means of plants, esp. sage and fig leaves.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

( Βοτάνη , An Herb, and Μαντεῖον A Prophecy ) , divination by means of plants. It was practiced among the ancient Greeks by writing one's name on herbs and leaves, and then exposing them to the winds; and as many letters as remained were placed together in a word or words, which formed the answer to the inquiry. (See Divination).