Parmelia omphalodes is a species of foliose lichen in the family Parmeliaceae. It is one of the several dozen lichen species first described in 1753 by Carl Linnaeus. Swedish lichenologist Erik Acharius transferred it to the genus Parmelia in 1803. The lichen is widely distributed, having been recorded in Asia, Africa, Europe, and North and South Americas. In Nepal, Parmelia omphalodes has been reported from 3,500 to 4,500 m elevation in a compilation of published records; this reported range extends above the tree line used in the study. Morphologically similarâÂÂbut genetically distinctâÂÂspecies include Parmelia discordans and P. pinnatifida.