[mcguire]

"A sign posted nearby [in Cape Disappointment Park] read: NO MUSHROOM PICKING: VIOLATORS SUBJECT TO CRIMINAL CITATION. Corbett ignored it....Close by, in the grass, he spotted true [Psilocybe azurescens]. More of the mystery mushrooms grew by the spot where Corbett had parked his truck.

"...He picked 10 specimens from the woodchip pile, and put them in a plastic bag along with 10 of the classic azurescens. “I put them together because they were clearly different, with no mistake whatsoever. They don’t look anything alike.”"

Sounds like he was picking the unidentified Psilocybe along with Psilocybe azurescens.

[pvaldes]

Then they saved the man from his own stupidity.

You never, ever, mix unidentified mushroms in the same bag. They are spongy criatures that disintegrate easily or adsorb liquids. Spores or tiny fragments of the unknown mushrom will contaminate the edible mushroms, poisoning the food and leading typically to serious consequences.