In my searches I found some astoundingly large lumber piece pics, most from what I would think were reputable sources.



Ed Pirnik of Fine Woodworking

I agree the plants I pulled out were very bushlike, and spindly, surely not something that would yield slabs like above. I gotta say if someone just posted this pic, and said what its it I would never guess ChokeCherry. The size of your bowls seems to say it can become kinda chunky. I just need to run into someone ripping out a fencerow of some of this. 

That stock in the lower part of the pic looks to me like Quarter sawn Sycamore that someone died with a red brown mix. The upper could be straight Black Cherry, but they are saying ChokeCherry? Who knows?