The pic I posted is just another view of creeping buttercup. I included it because the triple leaflets and the lobes of each leaflet seemed to me to be clear to see.
The buttercup I dug out by my porch grew in deep shade and had very dark green leaves, like the leaves in the link you posted. I looked at other pics of it, because I wanted to see if different growing conditions might produce leaves of a lighter shade of green, such as on the plant in the pic you took.
I honestly don't know what the plant is that you took a pic of along the logging road. I'll keep searching, but right now, I have to go run some errands.
I'm sure lots of other members are trying to come up with the ID, too. One of us will get it eventually!
"Isn't it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?" - Douglas Adams