|Lichen purple is a general term used to describe purple dyes derived
It was known to the ancient Greeks and Romans. But unlike other ancient dyes (indigo, Tyrian purple &c) the origin and chemical composition of the dye are less exact.
These pages describe the history and chemistry of the dyes and give some of the classical recipes with extensive bibliographic references.
|Some of the names used for the purple dye are
The methods used to process the lichen to give purple dye are very similar:
react it with ammonia (urine in former days) and air for a period of weeks.
Some web references ...
|Viking Age Dyestuffs||Orchil, the poor person's purple|
|Orchil||Orcein||Litmus||Cudbear||Bibliography||La Parelle||La pourpre Français|
|last modified ...||Email: email@example.com||Indigo||Tyrian purple||Henry Edward Schunck||Dyes in History and Archaeology||Murexide||Home|