family of marsh webcap cortinarius uliginosus in the forest

family marsh webcap cortinarius uliginosus forest blotchy macro poison leaf dangerous nature amanita noxious inedible poisoning fungus sunny mushroom toxic fatally summer toxicant foliage beautiful sunlight muscaria intoxication fall grass mortally toadstool ground venom uneatable botanical deadly venomous autumn beauty season leaves outdoor green natural poisonous