from The Century Dictionary and Cyclopedia
- n. The lichen Roccella tinctoria. Same as archil, 2.
Sorry, no etymologies found.
Wool is dyed black with a mixture of gall-berry leaves and sumac berries; for red they use a moss which they find growing on the rocks, and which may be the lichen _Roccella tinctoria_ or dyer's-moss; also madder root, and sassafras bark.