R. officinalis (rosemary), widespread in the Mediterranean region, and R. eriocalyx, native to northwest Africa and southern Spain have long been widely recognized. Rosmarinus tomentosus was first recognized as a separate species in 1941. Rosmarinus palaui was first described as a species in 2002, although recognition of this species remains contr... Found on http://en.wikipedia.org/wiki/Rosmarinus
(Rosemary) This half hardy perennial forms an evergreen shrub that has been cultivated throughout time for its lovely fragrance. It is a native of southern Europe. Rosemary was probably introduced into northern Europe and Great Britain in Roman times, if not earlier, but traditionally it was sent in the fourteenth century to Phillipa. Its name is d... Found on http://www.encyclo.co.uk/local/10004