All genuine rosewoods belong to the genus Dalbergia. The pre-eminent rosewood appreciated in the Western world is the wood of Dalbergia nigra. It is best known as "Brazilian rosewood", but also as "Bahia rosewood".
This wood has a strong, sweet smell, which persists for many years, explaining the name rosewood.
This page uses material from the Wikipedia article "Rosewood", which is released under the Creative Commons Attribution-Share-Alike License 3.0.