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Pérez-De-Gregorio, Miquel-Angel, Vizzini, Alfredo, Contu, Marco, Roqué, Carles, Ercole, Enrico (2011): Marasmiellus celebanticus (Agaricales, Omphalotaceae), a new species of Marasmiellus sect. Candidi collected in the Mediterranean area. Phytotaxa 25: 49-59, DOI: 10.11646/phytotaxa.25.1.6

A new Macrolepiota taxon from Italy, M. rhodosperma var. velicopia, is described and illustrated based on morphological and ITS rDNA data. It is characterized by a well-developed volva and abundant, evident velar remnants on the pileus, a stipe with a minutely squamulose covering, and very thick-walled elements in the pileipellis. A discussion on its taxonomic position within Macrolepiota and notes on closely related taxa are provided. DNA sequence analyses support the new taxon within the variability of M. fuliginosa sensu Vellinga, a non-volvate taxon that differs from Barla’s original sense of M. fuliginosa. As Barla did not indicate a holotype in his protologue of Lepiota procera var. fuliginosa and there are no extant original herbarium specimens, Barla’s Fig. 5/PL. 9 (from Les champignons des Alpes maritimes) is selected as a lectotype, and a recent collection from Liguria (Italy) is chosen as the epitype. A recent collection from Sardinia is chosen as epitype for L. permixta. Finally, M. fuliginosa and M. permixta are reduced in rank to forms of M. procera, based on their morphology.