Idahotree,
Yes thats correct on the secound one. Nice job. As for the the first one, no. not in the same genus. This tree grows large, usually hold its leaves until new bud break.sorry i dont know where it originates. The genus is one of the larger and there are many species in this catagory.That should narrow down your hunting.
I'm going to through in a full size tree here. I belive this tree grows more back East then here, although we do have some large one and this is one of them. About four foot at the base.
Thanks
Greg