Roccella
noun
Roc·cel·la
rōˈchelə
: a genus (the type of the family Roccellaceae) of chiefly maritime rock-inhabiting lichens that have a fruticulose or pendulous thallus and include some (especially Roccella tinctoria) which are the chief sources of the dye archil and some which furnish litmus compare lecanora, pertusaria
roccelline adjective
-elə̇n
-eˌlīn
Word History
Etymology
New Latin, from Italian, archil (plant), alteration of oricello