I used to pick mushrooms and harvest all kinds of berry's, fruit, nuts and fur and feather with me grandad when I was a lad and I took more interest in setting snares and ferreting and using catty than I did picking fungi but I wish I'd took more notice,I no the obvious one to pick like field mushrooms and to stay away from ones with yellow around stalks ,I came across these yesterday and thought they looked like blue legs as they was blue underneath but not sure so left them .I come across lots of different types but don't want to risk it .