Amanita ocreata

Amanita ocreata, commonly known as one of the many destroying angels, or more precisely the western North American destroying angel, is a deadly poisonous basidiomycete fungus, one of many in the genus Amanita. The large fruiting bodies (the mushrooms) generally appear in spring; the cap may be white or ochre and often develops a brownish centre, while the stipe, ring, gill and volva are all white. A. ocreata resembles several edible species commonly consumed by humans, increasing the risk of accidental poisoning. Mature fruiting bodies can be confused with the edible A. velosa (springtime amanita), A. lanei or Volvopluteus gloiocephalus, while immature specimens may be difficult to distinguish from edible Agaricus mushrooms or puffballs. The species occurs in the Pacific Northwest and California Floristic Provinces of North America, associating with oak trees. Similar in toxicity to the death cap (A. phalloides) and destroying angels of Europe (A. virosa) and eastern North America (A.......read more on Wikipedia.