Mordant with alum, (¼ lb. to a lb. of linen) boil for 2 hours. Then boil up with sufficient quantity of the lichen till the desired colour is got.
LIST OF LICHENS USED BY THE
PEASANTRY OF DIFFERENT
COUNTRIES FOR WOOL
DYEING.[11]
Shades of Red, Purple and Orange.
Roccella tinctoria. Orseille. Grows in the South of France, on rocks by the sea.
Lecanora tartarea. Crotal, Crottle, Corkur, Corcir, Korkir. Found in the Scotch Highlands and Islands, growing on rocks; used for the manufacture of Cudbear in Leith & Glasgow.
L. parella. Light Crottle, Crabs Eye Lichen. Found in Scotland, France, and England, on rocks and trees, formerly celebrated in the South of France in the making of the dye called Orseille d'Auvergne.
L. hæmatomma.—Bloody spotted lecanora, Black lecanora. Found in Scotland on rocks and trees.
Umbilicaria pustulata.—Blistered umbilicaria. Found on rocks in Norway and Sweden.
Isidium corallinum. White crottle. Found on rocks in Scotland.
I. Westringii. Westring's Isidium. Norway and Sweden.