small fly agaric with curved white stem and red domed cap with c

acid agaric alkaloid amanita autumn bent cap characteristic chemical compounds content curved danger domed erect famous fly forest generic hallucinogenic head ibotenic inedible inesculent little magic muscaria muscarine muscazone muscimol mushroom mycorrhiza pileus poisonous psychoactive red season small spots spotted stem stipe summer toadstool toxic typical uneatable vegetation white wood