Shroom hunting How would swim know if some shrooms are poisonous and some aren't?

[kryptik]

There are mushrooms near where swim works.. i'll have to get a picture for everyone here, cuase swim doesn't know much about shrooms... but there are a few here and there scattered near where swim works, and swim is wondering if they are magic or not. No one seems to be picking them.

One of swims friend told swim they were poisonous, but when swim asked her friend to explain more, he didn't... so swim thinks her friend is lying since he wouldn't explain more... but swim doesn't want to take them if they are poisonous...

would erowid be able to tell swim which were poisonous and which were magic?

swim thought magic shrooms were poisonous...