To solve this problem, we need to identify which fungus among the given options contains hallucinogens.$\newline$Let's analyze each option:$\newline$• Option 1: $$Morchella esculenta$$ is commonly known as morel mushroom. It is edible and highly prized for its flavor, but it does not contain hallucinogens.$\newline$• Option 2: $$Amanita muscaria$$ is known as the fly agaric mushroom. It is famous for its psychoactive properties due to the presence of compounds like muscimol and ibotenic acid, which are hallucinogenic.$\newline$• Option 3: $$Neurospora sp.$$ is a genus of fungi used extensively in genetic research. It does not contain hallucinogens.$\newline$• Option 4: $$Ustilago sp.$$ is a genus of smut fungi, which are plant pathogens. They do not contain hallucinogens.$\newline$Based on the analysis, $$Amanita muscaria$$ is the only fungus among the options that contains hallucinogens.$\newline$Therefore, the correct option is Option 2.