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(order Lecanorales)

A genus of lichens in which the foliose thallus is roughly circular in outline, either entire or lobed, and is attached to the substrate at a point in the centre of its lower surface. The apothecia are lecideine and black. Species are found mainly on non-calcareous rocks, chiefly in hilly and mountainous districts. See also iwatake.

Subjects: Plant Sciences and Forestry.

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