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Published online by Cambridge University Press: 28 March 2007
The genus Lecidea in the lichen flora of the gypsum soils of Spainis represented b two species: L. gypsicola Llimona and L. circinarioides Casares & Hafellner sp. nov., which are described in this article. Chemical, anatomical and ecological differences are also described, as is the taxonomic value of the morphological characteristics of the mature ascoma.