I believe it is purslane. If it is, it IS edible. Here is a link that might be useful: Is this it?

I can't see it clearly, maybe violets or Ranunculus, that were not killed before using this bed (below the level of removed material,) or seedlings from seeds in the mulch (or seeds that were residing in the soil already, below the level of what was removed.)

Not to be too nit-picky, but the issue with Norway maple is not that it is a "trash tree" or any other negative attribute. They are handsome, vigorous trees. The issue is their invasiveness here in N. America. And it's a real issue, this tree truly being capable of outcompeting not just individual native trees, but whole plant communities. Just saying.....there's a reason several million of these things got planted all over the US and Canada. But time has shown that the invasive potential is just too great with this one. And yes, I am well aware of the other "issues" with the tree-its very heavy shade, tendency towards shallow roots, its tendency to develop girdling roots in transplanted individuals. But none of those factors absolutely preclude our using this tree. The invasiveness however, does.

Nick, in this reality, the plant is Datura stramonium,also referred to by the common name Jimson Weed. I'm curious as to why you have trouble accepting this truth? Can you give me the scientific name of the plant that YOU believe is the real Jimson Weed? It might help to clear things up. We can't see anything from your perspective if all you ever say is " It is not Datura stramonium or Jimson Weed".