Momoy is the personified datura, the old-woman spirit of the visionary plant the Spanish called toloache (Datura wrightii). In the narratives that Harrington collected and Blackburn published she is an aged grandmother of the First People, wealthy and wise; the water in which she has washed her hands induces, in whoever drinks it, a deep trance and prophetic dreams of the future. At the close of the mythic age, after the great flood that ended the time of the First People, she turned herself into the datura plant, and so her name momoy belongs both to the woman and to the herb. As the source of the toloache drunk in the Chumash vision quest she stands at the centre of the datura cult, in which initiates sought a dream-helper and knowledge of their destiny.