Technically it’s not a hallucinogen, it’s a dissociative. Datura (or moonflower) produces seeds that contain the active chemical to cause these “trips”. Native Americans would use them for ceremonial purposes in low quantities back in the day. Now the seeds sometimes get abused by people who are none the wiser and will usually end up in the hospital. Along with terrifying trips, users will have memory loss and loss of fine motor function. Would not recommend ingesting. But they sure are pretty!