Gary, et al,
Evolution of the language has become a REAL problem.
I'm sure if you take Wiki, "definitions on-line", even Websters will probably confirm that rosewood can be used to describe any wood that is red (or some other NEW definition).
Look at the forestry dept. of the noted Universities (Wisconsin is one of the most reputable). I BELIEVE they will adhere to the original "dalbergia" means rosewood.
But, if it helps you market the product, carry a Wikipedia definition with you and you can call a zebra a horse with stripes, if you like. All depends on HOW accurate you really WANT to be.
I believe I originally read the dalbergia information in the "Woods of the World" book, still sold in WoodCraft. I have the CD, but I have not tried to confirm.
FWIW --