Ololiuqui and Tlitliltzin
Ololiuqui (Coatl xoxouhqui) was identified as Rivea corymbosa in 1941 by Richard Evans Schultes. The name Ololiuqui refers to the brown seeds of the Rivea corymbosa (Morning Glory) plant. Tlitliltzin was identified later as being Ipomoea violacea by R. Gordon Wasson. This variation contains black seeds and usually has bluish hued flowers.
The seeds of these plants contain the psychoactive d-lysergic acid amide, or LSA. The preparation of the seeds involved grinding them on a metate, then filtering them with water to extract the alkaloids. The resulting brew was then drunk to bring forth visions.
The Florentine Codex Book 11 describes the Ololiuqui intoxication:
It makes one besotted; it deranges one, troubles one, maddens one, makes one possessed. He who eats it, who drinks it, sees many things which greatly terrify him. He is really frightened poisonous serpent which he sees for that reason.
The morning glory was also utilized in healing rituals by the ticitl. The ticitl would often take ololiuqui to determine the cause of diseases and illness. It was also used as an anesthetic to ease pain by creating a paste from the seeds and tobacco leaf, then rubbing it on the affected body part.
Read more about this topic: Aztec Use Of Entheogens