Sulphur Dust Lichen (Psilolechia lucida)

Sulphur Dust Lichen, a reference photo — Photo: Jason Hollinger · CC BY 2.0 (licence)

Psilolechia lucida is a species of saxicolous lichen in the family Psilolechiaceae. It is widely distributed through the world, where it grows on natural and artificial rocky substrates in the shade, often in sheltered underhangs. It forms a greenish crust on the surface of its substrate.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

We have no record of Sulphur Dust Lichen 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

Ropalospora viridis

Classification

Kingdom: Fungi
Phylum: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Psilolechiaceae
Genus: Psilolechia
Species: Psilolechia lucida

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