Roccella
Roccella, genus of tropical fruticose lichen, an important source of the dye orchil and litmus.
This article was most recently revised and updated by Melissa Petruzzello.
Citation Information
Article Title:
Roccella
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
31 December 2015
Access Date:
November 13, 2026