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Biochemical systematics of some species of Lactarius section Dapetes

ABSTRACT Specimens from several Italian populations ascribable to nine taxa of the section Dapetes of the genus Lactarius (Russulales, Basidiomycota) were subjected to electrophoretical analysis of the gene-enzyme systems from eleven loci. Results show that the four taxa characterised by carrot-red latex (Lactarius deliciosus complex) are genetically well separated, whereas the five taxa with vinaceous-red latex (L. sanguifluus complex) fall into two groups. Accordingly, only one of the two conflicting conceptions of Lactarius vinosus present in the literature may be regarded as a good species while the other, which is genetically identical, has to be considered as a morphological form of L. sanguifluus.