roccella tinctoria
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a source of the dye archil and of litmus
roccella tinctoria meaning & definition 1 of roccella tinctoria.
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Roccella tinctoria is a species of fruticose lichen in the Roccellaceae family. It is native to the Mediterranean and known for its importance in the production of the purple-red dye called orchil (or orcein). The lichen is also known as litmus fungus and commercially used in litmus paper production.
roccella tinctoria meaning & definition 2 of roccella tinctoria.