LSA

Lysergic acid amide LSA is a naturally-occurring psychedelic substance that is chemically related to LSD and is said to produce similar effects, although the extent to which it does is unclear.
Reports suggest that LSA has a less intense trip than LSD, however, you can expect a powerful psychedelic experience by taking larger doses.
LSA is found most commonly in the seeds of morning glory, Hawaiian baby Woodrose and some types of fungi.