How To Use Roccella In A Sentence

• On some of the rugged masses of masonry grew large hoary tufts of the strange roccella or orchil-weed, which yields the famous purple dye -- with which, in all likelihood, the robes of the Cæsars were coloured -- and which gave wealth, rank, and name to one princely Roman Mosaics Or, Studies in Rome and Its Neighbourhood
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