Lysergic acid is not found in the Convolvulaceae (morning glory) family. I don't think unsubstituted, plain lysergic acid is found in any genus (
Claviceps, Argyreia, Ipomoea, Stipa, etc) of the many plants or fungi ergolines are known to occur in.. But that I do not know that for sure. It's very unstable and would likely bond with other chemicals present in the flesh of these various species and become something else.
Also remember that
LSA is not one chemical. but many chemicals. LSAs are amides of lysergic acid. LSD is the
N,N-diethyl amide of lysergic acid, and this is a semi synthetic LSA. d- Lysergic acid hydroxyethylamide, found in most ergoline-containing plant and fungi families is the
N-hydroxy-N-ethyl amide of lysergic acid. Ergine (LA-111, d-lysergic acid amide) is d-isomer of regular, unsubstituted lysergic acid amide and is also found in many plant and fungi genusis.
Morning glories contain up to a dozen or so LSAs. In
Rivea corymbosa (ololiuqui), here are the main half-dozen LSAs.
The ratios of the various amides do vary between different Convolvulaceae species.
Ipomoea violacea (heavenly blue) does not have lysergol in it, but another one insitead apprears. Too lazy too look. I know
Argyreia nervosa contains a sizable amount of Penniclavine, and it is only found in a trace amount in the Ipomea sp. Perhaps this is why baby woodrose are much more sedating that heavenly blue seeds. That's the main difference I've noted. That, and heavenly blue's are more "colorful" but that is of course subjective.
There is no doubt that the other amides present in the seeds affect the action of the main one (ergine) as Hofmann's description of this alkaloid are nothing more than that of a sedative. And I can assure you that heavenly blues and baby woodrose seeds are more than just a sedative.