I bought a Robinia Lacy Lady 5 years ago at Wesonbirt arboretum. It didn't look like much at the time, but shortly after repotting it, it became my favorite. I repotted it again last year, and gave the roots a little haircut at the same time. Because of its shape and beauty of the leaves, I think this variety would work well as a bonsai, though I wnder if the branches are too brittle.
I know a lot of you are purists, but does anyone think it might be attractive, if not traditional?