Abstract
This work reports the occurrence of fungi species of the genera Chlorophyllum Massee and Macrolepiota Singer, the latter not yet registered for Sao Gabriel, Rio Grande do Sul state, Brazil. The study area is located in the Pampa biome, being the samplings conducted between April 2011 and May 2012. The micobiota studied in the area is represented until this moment by five species, as follows: Macrolepiota gracilenta (Krombh) Wasser, Macrolepiota fuligineosquarrosa Malencon, Macrolepiota procera (Scop.) Singer, Chlorophyllum rachodes (Vittad.) Vellinga and Chlorophyllum molybdites (G. Mey.) Massee. Identification keys for these species and two new occurrences of Macrolepiota for, respectively, Brazil and Rio Grande do Sul, are presented.Keywords: mycodiversity, taxonomy, Basidiomycota.
Highlights
Rodrigo Alves, Graciele de Menezes, Eliane de Oliveira, Filipe Victoria, Antonio Pereira, Margeli de Albuquerque um anel proeminente, esporos grandes, usualmente providos de poro germinativo e presença de queilocistídios conspícuos
Fíbulas ocorrem em ambos os gêneros, mas podem ser raras ou completamente ausentes em algumas espécies (Vellinga, 2003a)
O contexto do píleo e estipe tornam-se avermelhados ao toque, quando machucados ou mesmo ao atingir a fase madura da espécie (Romagnesi, 1990; Franco-Molano, 1999)
Summary
Rodrigo Alves, Graciele de Menezes, Eliane de Oliveira, Filipe Victoria, Antonio Pereira, Margeli de Albuquerque um anel proeminente, esporos grandes (em geral > 10 μm), usualmente providos de poro germinativo e presença de queilocistídios conspícuos. O gênero Macrolepiota foi usado por Singer (1946) para incluir espécies com basidiósporos grandes (acima de 10 μm de comprimento), metacromáticos com um amplo poro germinativo, esporada branca, e possuindo grampos de conexão (Franco-Molano, 1999).
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