Quincy Edward Boudreaux, 25, was arrested Friday at Lake Ouachita State Park, about 70 miles outside Little Rock, along with two other men after park rangers smelled marijuana near their campsite, the Arkansas Democrat-Gazette reported.
According to a police affidavit on the arrest, officers found a jar containing suspected marijuana, a baggie with mushrooms Boudreaux allegedly identified as "psychedelic mushrooms" and aluminum foil packs that contained "halves of dog biscuits that tested positive for LSD," The Associated Press reported.
Authorities also reported finding a baggie containing "assorted colored pills" that later tested positive for MDMA, or Ecstasy, the Democrat-Gazette reported.
The two other suspects, identified as Chance Cameron Leger, 22, and Gavin Hall Wade, 23, are facing misdemeanor drug charges.
Boudreaux, who is facing multiple felony counts, is jailed on a $15,000 bond.