Aelgus, sometimes known as Lesser Kingsfoil (though unrelated to proper Athelas) was a small, green, leafy fern that grew in thick patches. It was a common herb, and like athelas was originally grown and used by the Númenoreans. Shepherds and farmers considered it a nuisance and worked to uproot and burn it. The knowledge of its use had been lost in the mists of time to all but the wisest herbalists; only those familiar with the old Lore of Wilderness: knew of its beneficial effects. * Location: Throughout Arnor. * Effect: Aelgus was used to treat poison.