Amanita phalloides

Sava said: I spent an hour under rain yesterday at Tualatin Hills Nature Camp.
There were interesting mushrooms, but perhaps the most surprising were large fruitings of Amanita phalloides.
I posted an image of it on Mushroom Observer
and this morning got a request from the Amanita expert Rod Tulloss
to try to collect a large number of specimens for a toxicology study that's underway.