"Indole Alkaloids In Plant Hallucinogens"  Richard Evans Schultes, PhD.
Journal of Psychedelic Drugs Vol.8(No.1) Jan-Mar 1976
 
"The main constituent of the seeds of Rivea corymbosa is ergine or d-lysergic
acid amide. Minor alkaloids present are the related d-isolysergic acid amide
(isoergine), chanoclavine, elymoclavine and lysergol. The seeds of Ipomoea
violacea have a similar composition, but instead of lysergol, they have
ergometrine (ergonovine). Later, very minor amounts of two alkaloids
ergometrinine and penniclavine - were found in I. violacea by chromatography.
the total alkaloid content of the seeds of Ipomoea viloacea is approximately
five times as great as that of the seeds of Rivea corymbosa: 0.06% in the
former; 0.012% in the latter. This difference in the alkaloid content
explains why Indians employ smaller doses of seeds of the Ipomoea than of the
Rivea.
 --------------------------
"Ethnopharmacology and Taxonomy of Mexican Psychodysleptic Plants"
 Jose Luis Diaz M.D.
 Journal of Psychedelic Drugs Vol. 11(1-2) Jan-Jun 1979
 
Seeds of various Morning Glories contain
 Ergolines:  ergine,isoergine,ergonovine
 Glucosides: turbicoryn [apparently in Rivea corymbosa only]
 
called Tlitlitzen (Aztec word for "The Divine Black One")
to the Aztecs, Black is a "hot" color,
a property of psychotropics associated with light
 
------------------------
"The Botanical and Chemical Distribution of Hallucinogens"
Richard Evans Schultes, PhD.
Journal of Psychedelic Drugs Vol.9(No.3) Jul-Sep 1977
 
"I. violacea, often referred to by it's synonyms I. rubro-caerulea and
I. tricolor, is represented in horticulture by a number of "varieties,"
such as: Heavenly Blue, Pearly Gates, Flying Saucers, Wedding Bells,
Summer Skies, and Blue Stars - all of which contain the hallucinogenic
ergot alkaloids."
 
==========================
"Burger's Medicinal Chemistry" Fourth Edition, Volume III
Chapter: "Hallucinogens"  Alexander Shulgin
 
                  Composition, % of total alkaloids present
                  -----------------------------------------
Compound          R. corymbosa       I. violacea
---------------   ----------------   ----------------------
Ergine (LA-111)   54, 48             58, 10-16, 5-10
Isoergine         17, 35             8, 18-26, 9-17
Ergometrine                          8
Elymoclavine      4                  4
Chanoclavine      4                  4
Lysergol          4
 
Total Alkaloids   .012, .04          .06, .04-.08, .02-.04
(% of dry weight
 of seeds)