Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun roccella

1 sense of roccella

Sense 1
roccella, Roccella tinctoria -- (a source of the dye archil and of litmus)
       => lichen -- (any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.)