Peltigera is a genus of approximately 91 species of leaf-like lichens in the family Peltigeraceae. Named for their resemblance to various animal pelts, Peltigera grow on soil, the bases of trees and rotting wood throughout Edmonton’s river valley. Edmonton is home to many species of Peltigera, but Peltigera elisabethae (Concentric Pelt) is one of the most common. You can recognize Concentric Pelt by its grey, smooth, shiny lobes, and the ruffle-like mini-lobes it produces along its lobe edges.