I also just located Mica's post about tulipwood from 2008...
"Tulipwood is a premium wood. As a member of the Rosewood family, it sounds pretty much like Rosewood, Coco Bolo, etc.
I have Tulipwood in stock that is wide enough only for an Essence bass. It's generally available in only narrow widths. I buy wide stuff when I can find it with nice figure, which is usually only ever 2-3 years.
Other woods are marketed as Tulipwood that are not Rosewood. Commercial names get confusing. There's a tree in the US called Tulip Tree and it's wood is sometimes sold as Tulipwood but it's not the wood I'm talking about."