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Studi Sul Genere

1998

Abstract

Research on the genus Agaricus Il. A. heterocystis Heinem et Gooss., an African species naturalised in Sardinia, and A. fr agilivolvatus, a new species of the section Clarkeinda. Agaricus heterocystis, an african species belonging in the section Arvenses, seems to be naturalized in Sardinia where it has often been recorded. A description of the sardinian collections of the species is given. A. fragilivolvatus is described as a new species into the section Clarkeinda and the delimitation fr om similar entities is discussed. KEY WORDS: Basidiomycotina; Agaricales, Agaricaeae, Agaricus, A. heterocystis, A.fragilivolvatus sp. nov. RIASSUNTO. Studi su i genere Agaricus Il. A. heterocystis Heinem et Gooss., una specie africana natu ralizzata in Sardegna ed A. fr agili volvatus, nuova specie delia sezione Clarkeinda. Agaricus heterocystis, una specie di origine africana appartenente alia sezione Arvenses, sembra essersi ben adattato al clima delia Sardegna, dove è stato raccolto in diverse...