Mushroom type plant found in garden

Question

I have gardened all my life and haven’t seen something like this before, and am curious to what it is. They are up to a few centimeters wide, feel exactly and look exactly like the edible everyday mushrooms you cook up. They are completely round with no under carriage, so to speak, a few long strange roots, and once cut open, they have a clear jelly look around the outside and green in the middle. Have looked up sites but haven’t found anything like them. Could you please help me?

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Answer 1

I am thinking it is a type of puffball: http://www.wildflowers-and-weeds.com/mushrooms/Lycoperdaceae.htm