There are many interesting woods out there. As an arborist I know the common ones in my area, and when I get a chance I try to learn others. Another Certified Arborist from Los Angeles and I, after working with him for a couple days, rode our bicycles about twenty miles around the LA basin and saw trees from Africa, South America, Hawaii, China, and other areas, which would never grow anywhere near my home. It was a great day.
Also, I met a fellow a few months ago while getting signatures on a petition. He told me his career is working as a 'wood anatomist'. He says companies employ him to identify and verify species of wood. One example he gave was a commercial flooring company that wanted species verification for loads of wood they were potentially purchasing.
He only lives a few blocks away, but keeps a low profile and I hardly ever see him out and about.
I hope I'll get a chance to run into him again.
About 28 years ago I did some tree work for a Mr Polk, near Wilmington, DE who was involved in a wood collectors organization. He also had an Italian duplicator that he showed me. He used it to make custom gun stocks for Remington from walnut.