Pau Ferro is unbelievably beautiful wood. Harder, Denser than Red Oak
http://www.wood-database.com/lumber-identification/hardwoods/pau-ferro/
I however developed a sensitivity to it after a belt sander was shooting the dust into my belly button.
Pretty Oily. Oil based Minwax polyurethane would not cure on top of it. Had to use water based Poly.
I had no issues with titebond2 adhering to it, but others report gluing failure. I guess it depends on exactly how Oily any particular Piece of wood is.