V-fingers

Allocetraria madreporiformis, commonly known as V-fingers, is a species of fruticose lichen in the family Parmeliaceae. It forms a yellow-brown thallus of branching, somewhat inflated lobes that grow directly on the ground in arctic and high-mountain (alpine) habitats across the Northern Hemisphere. The species favours calcareous (lime-rich) soils in exposed, wind-swept sites such as ridges and arctic steppes, where wind erosion keeps mineral soil surfaces open. First described in 1810 by Erik Acharius and placed in...