Ochrolechia tartarea

Ochrolechia tartarea (L.) A.Massal. is a dye lichen.

Lichens grow very slow and are an important element in their ecosystems, so avoid foraging for dyeing.

Colors
It gives a purple colour.

Parts used
You must use all the thallus to dye with this lichen. Remember lichens grow very slow.

Methods
Household ammonia extraction to achieve the color, then usual decoction method to dye the fiber.

Recipes
Linda Soltvedt share her method to dye with this plant, that she call korkje, in Natural Dyes facebook group.

Synonyms
It's called korkje in Norway.