The only two Butternuts that I know of grow in North America and Austrailia, the latter of which is in name only. North Anerican Butternut has the botanical name ( Juglans cinerea ) and Walnut has the botanical name ( Juglans nigra ). They also pretty much grow in the same neighborhood, Eastern North America. In my book, that makes them eligible to be cousins. Butternut has a tendency to be pretty rustic for a variety of reasons but can also be very sound and architectural in appearance. Unfortunately, like Alder, you may have to digest a large waste factor to satisfy an architectural requirement. We typically stock Butternut as plain sliced and clip quarters away when necessary.