[lichen] Parmelia is a large genus of foliose lichens with a global distribution, extending from the Arctic to the Antarctic continent but concentrated in temperate regions. 125 species have been recorded on the Indian sub-continent. Depending on whether the circumscription of the genus is considered in the narrow sense (sensu strico) or th... Found on http://en.wikipedia.org/wiki/Parmelia_(lichen)
largest genus of foliose (leafy) lichens, which includes among its members the species commonly known as crottle and skull lichen. Crottle, the ... Found on http://www.britannica.com/eb/a-z/p/21