CONTRIBUTION TO THE STUDY OF THE GENERA CLADINA AND CLADONIA IN SPAIN.2.

Sixty-one taxa of the family Cladoniaceae (lichen-forming fungi), are reported from Spain, mostly from the interior provinces of Iberian Pen insula. Cladonia iberica Burgaz Br Ahti, sp. nova, C. dimorpha and C. prolifica are new to Europe, Cladonia borealis, C. cornuta, C. cryptoc hlorophaea, C. grayi, C. homosekikaica, C. incrassata, C. luteoalba, C . rei and C. scabriuscula are new to Spain. Many species are new repor ts for the provinces. The aromatic compounds of each species were iden tified with thin-layer chromatography. The new combination Cladina arb uscula ssp. mitis (Sandst.) Burgaz is published.