Revision of the genera Agrocybe and Cyclocybe (Strophariaceae, Agaricales, Basidiomycota) in Argentina

NIVEIRO N.; UHART, M; ALBERTÓ E.

Rodriguesia

Rio de Janeiro Botanical Garden

Año: 2020 vol. 71

0370-6583

Agrocybe  is characterized by the collybioid to tricholomatoid basidiomata with rusty to dark spore-print, a hymeniform pileipellis, and basidiosspores with a reduced to broad germ-pore. Recently, the species with reduced germ-pore were segregated to  Cyclocybe . The knowledge of these genera in Argentina is scanty, although they have been partially studied in the country, but there is not a field that deals exhaustively with it. Macro- and micromorphological characters of specimens obtained in the feld and from different national herbaria (BAFC, CTES, LIL, LPS) were analyzed. Cultivation techniques were used to obtain basidiomata, allowing for a macro- and micromorphological study of fresh developing basidiomes. We concluded that in Argentina there are, so far, 14 species of  Agrocybe  (one of them with 3 varieties) and two of  Cyclocybe  including to C. wrightii, which is proposed as a new combination. Sixteen species are described and a key to the Argentinian species of  Agrocybe  and Cyclocybe  is proposed.