Allocetraria madreporiformis

V-fingers, a reference photo
Photo: Jerzy Opioła · CC BY-SA 4.0 (licence)

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 Allocetraria in 1996, it contains usnic acid and protolichesterinic acid.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

We have no record of V-fingers being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

Classification

Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Lecanorales
Family
Parmeliaceae
Species
Allocetraria madreporiformis

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