Hedgerow
HACK
It looks like Hickory/Pecan. I cut a hickory aprox 24" dia it had a hard lean prob 30-40 degress from vertical it was very interlocked like an Elm. Noodled most of it was easyer than splitting and chopping all the strings loose. Growing conditions have a lot to do with variations within a species.
Agreed... Growing conditions make a huge difference, even within the same species... The piece on the splitter looks suspiciously like a Pignut Hickory. I'd say Pecan too, but my experience with those is extremely limited. The only ones I've ever gotten my hands on are under 12" DBL, and go into my smoking wood pile. Rare nuggets around here...:hmm3grin2orange: