Lecanora

(le-kan-o'rah,) a gen. of lichens. L. tart area affords the Cudbear of commerce; but the most remarkable species in the genus are L. esculent a and affinis, which are found in Armenia and Algeria, blown about and heaped upby the winds, and are ground up with corn in times of scarcity to eke out the scanty supply. They are, however, a bad substitute, as they contain 66 per cent. of oxalate of lime. [s. 534]