Lichen lichens

Dye~ing

Here
https://isabellawhitworth.com/2013/02/21/changing-knowledge-changing-attitudes-lichen-dyeing/

&
http://wooltribulations.blogspot.com/2013/11/evernia-prunastri-lichen-dye.html?m=1

There
https://permies.com/mobile/t/56848/fiber-arts/Lichens-Vegetable-Dyeing-Eileen-Bolton

&
http://www.donnakallnerfiberart.com/2013/04/lichen-natural-dye-fenceposts/