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The Collaborative International Dictionary

Orcin \Or"cin\, n. [Etymology uncertain: cf. F. orcine.] (Chem.) A colorless crystalline substance, C6H3.CH3.(OH)2, which is obtained from certain lichens ( Roccella, Lecanora, etc.), also from extract of aloes, and artificially from certain derivatives of toluene. It changes readily into orcein.


n. any lichen of the genus Lecanora; some used in dyeing; some used for food


Lecanora is a genus of lichen commonly called rim lichens. Lichens in the genus Squamarina are also called rime lichens. Members of the genus have roughly circular fruiting discs ( apothecia) with rims that have photosynthetic tissue similar to that of the nonfruiting part of the lichen body ( thallus). Other lichens with apothecia having margins made of thallus-like tissue are called lecanorine.

It is in the Lecanoraceae family in the suborder Lecanorineae.