Identification: Strange mushrooms

I have found a few strange mushrooms in a play area beside my barn. I identified the common toadstool and some of the others but cannot identify the ones in the pictures
Can anyone help me?

 

I'd really like to see a picture of the underside of the mushroom in pics #1 and #2 .

 

Ok will take a picture on tuesday when down at the barn and will post then!

 

Could be a Russula; see if they crumble up easily - and see if the stalk easily breaks in half (across the stem).

 

I agree with MycoRob about likely Russulas.
Also in photo 3 the mushroom below and left of the Amanitas looks to be a Russula as well.
cheers,
frog

 

Ok here are some better pictures and the underside details. Also a new type of mushroom found. To explain this better all these mushrooms are found in a 15'x10' play area that fenced in just to the side of the barn .

 

#1 in the new bunch is Helvella lacunosa, it is a treat to see it.

 

But IS it a treat to eat it?