found this....

MORNING GLORY -- _Ipomoea violacea._ Family Convolvulaceae (Bindweed
family).
Material: Seeds and to a lesser extent all other parts of plant
except roots. Strongest varieties are: Heavenly Blue, Pearly Gates,
Flying Saucers, Wedding Bells, Blue Star, Summer Skies, and Badoh
Begro (Mexican variety).
Usage: 5-10 grams of seeds are thoroughly chewed and swallowed or
may be thoroughly ground and soaked in 1/2 cup water for half an hour,
strained and drunk.
Active constituents: D-lysergic acid amide and ergometrine.
Effects: LSD-like experience lasting about 6 hours.
Contraindications: Persons with history of hepatitis or other
liver disorders should not take lysergic acid amides. Ergometrine has
uterus-stimulating properties and should not be taken by pregnant
women. Some suppliers treat morning-glory seeds with poison to
discourage use as a mind alterant, or with methyl mercury to prevent
spoilage (symptoms: vomiting, diarrhea). If treated seeds are
planted, toxins are not transmitted to next generation. Some persons
wearing treated seeds as beads on bare skin have developed rash.
Supplier: Untreated seeds, MGH.