 These include the ergot, a fungal parasite of the barley or rye grain, which contains the alkaloids ergotamine, a precursor to LSD, and ergonovine.However, modern attempts to prepare a kykeon using ergot-parasitized barley have yielded inconclusive results, though Alexander Shulgin and Ann Shulgin describe both ergonovine and LSA to be known to produce LSD-like effects.Psychoactive mushrooms are another candidate.