Desert museum is indeed a beautiful tree, but is a hybrid and unfortunately would not come true from seed. It was one of a kind and is grown from cuttings.

HERE is the history of the tree. Below in italics is a paragraph from the link:

"Desert Museum was a discovery, not the result of a breeding program. In
1979, I collected a few dozen seeds from a first-generation hybrid and
grew them. All except one seedling were uninteresting. The one seedling
grew into a superior tree. Genetic and phenotypic analysis revealed that
the hybrid had been pollinated by a blue palo verde. I named it Desert
Museum with the expectation that Arizona-Sonora Desert Museum would
patent the tree and make some money from it. Oh, how they wish they had
now. ... Desert Museum does produce viable seeds. I have grown hundreds and all were inferior to the parent."

I'm not sure how well Arroya sweetwood tree grows in South Florida since it likes alkaline soils, but I could send some seeds which will come true. It's fast growing, has smooth fragrant bark and leaves, and beautiful white flowers in spring. Maybe you could do some research and find out how it would do there.

Perhaps some others on here would have some suggestions of what might be a good tree to grow for your worthy project.

We wish you well!

Thank you for the info. I was hoping the hybrid would be a stabilized line kind of like the breeding of the savanna cat or Bengal cat) but I guess not.

The soil is alkaline here in Palm Beach County. I'll look into the Arroya sweetwood tree. Thank you for your generous offer!

Edit: I took a look and some information I read says that it thrives inn almost any soil except sand. As you can imagine, south Florida is about as sandy as it gets. Thank you again!

Bummer. Maybe ask on the Florida forums what interesting ornamental trees in that climate will grow quickly from seed.

I got some Desert Museum seeds online from PaloVerdeTree.com also they sent me a few seeds for free...:)