I've got small weeds growing in the back yard
and never bothered to find out what they are.
It's time to correct that.
The "Seek" app on my phone says it is
but cannot resolve it further (i.e., to species).
Somebody mentioned it might be Purslane.
Another weed that looks similar came up as "Thyme-leaved Speedwell".
So here I am asking for assistance. See attached photo.
Assuming it is either Stonecrop or Purslane, how do you tell the difference?