An herb brought from Númenor. In the rightful king's hands it acted
as a cure for many ills. Aragorn used it in his attempt to heal
Frodo of the wound caused by the Morgul-knife, though with little
success. The dried leaves were more effective in the injuries sustained
in the Mines of Moria however. Athelas was especially effective
against the Black Shadow, as it affected Merry, Éowyn and Faramir.
It did not grow wild in Middle-Earth, except in the areas where
the Dúnedain had camped or lived.