Ipomoea Violacea (also known as Morning Glory.) The Zapotecs used Ipomoea violacea by grinding the seeds up and wrapping them in a meal cloth. They would then soak it in cold water and find out about the illness of a patient, a troublemaker among the people, or the location of a lost object. Morning glory seeds called tlitlitzin were used ritually by the Aztec for their psychoactive properties. Spanish chroniclers in the mid 16th century reported on the divinatory use of these seeds. Their use has continued in southern Mexico, although it wasn't until about 1900 that tlitlitzin was identified botanically as Morning glory.