Notes on 113 fungal taxa are compiled in this paper, including 11 new genera, 89 new species, one new subspecies, three new combinations and xx reference specimens. A wide geographic and taxonomic range of fungal taxa are detailed. In the Ascomycota the new genera Angustospora (Testudinaceae), Camporesia (Xylariaceae), Clematidis, Crassiparies (Pleosporales genera incertae sedis), Farasanispora, Longiostiolum (Pleosporales genera incertae sedis), Multilocularia (Parabambusicolaceae), Neophaeocryptopus (Dothideaceae), Parameliola (Pleosporales genera incertae sedis), and Towyspora (Lentitheciaceae) are introduced. Newly introduced species are Angustospora nilensis, Aniptodera

Notes on 113 fungal taxa are compiled in this paper, including 11 new genera, 89 new species, one new subspecies, three new combinations and xx reference specimens. A wide geographic and taxonomic range of fungal taxa are detailed. In the Ascomycota the new genera Angustospora (Testudinaceae), Camporesia (Xylariaceae), Clematidis, Crassiparies (Pleosporales genera incertae sedis), Farasanispora, Longiostiolum (Pleosporales genera incertae sedis), Multilocularia (Parabambusicolaceae), Neophaeocryptopus (Dothideaceae), Parameliola (Pleosporales genera incertae sedis), and Towyspora (Lentitheciaceae) are introduced. Newly introduced species are Angustospora nilensis, Aniptodera

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The phylum Labyrinthulomycota is composed of three distinct groups of fungus-like organisms: the labyrinthulids, the thraustochytrids and the aplanochytrids. They are present in marine and brackish waters as saprobes and/or parasites. In recent years, there was an increased interest in studying these organisms due to the ability that some have to produce large amounts of lipids, particularly polyunsaturated fatty acids. However, in spite of their importance and diversity, in Brazil only four species were reported in the 1970s. Due to their ecological and economic importance globally and the limited knowledge of them in the country, this study aimed to evaluate the diversity of the Labyrinthulomycota in mangrove swamps and coastal waters of São Paulo State, Brazil. The specimens were isolated from water and leaf samples using different methodologies, and purified in an agar medium prepared with half-strength sterile seawater, peptone, yeast extract and glucose. After purification, they were identified by means of morphology and phylogenetic analysis of the SSU rDNA region. A total of 193 specimens representing five genera were observed, 26 specimens were incorporated into the culture collections and 29 sequences of the SSU rDNA region were deposited in GenBank.Labyrinthulasp.,Aurantiochytriumsp.,Parietichytrium sarkarianumandThraustochytrium striatumare new records for Brazil, contributing to our knowledge of the diversity of fungus-like organisms in the country.

Achlya catenulata sp. nov. was collected from water samples in a mangrove swamp of the “Parque Estadual da Ilha do Cardoso”, São Paulo State, Brazil. This new species is characterized by the presence of achlyoid type of zoospore discharge from both primary and secondary sporangia, catenulate smooth-walled oogonia in chains of up to 11 oogonia, diclinous antheridial branches and eccentric oospores, which generally failed to mature. Maximum likelihood phylogenetic analyses based on the ITS and LSU regions (rDNA) placed this species within the Achlya sensu stricto clade.

-(Diversity of conidial fungi and some abiotic variables of the water after the reopening of the Pirarungaua stream in the Jardim Botânico, São Paulo, São Paulo State, Brazil). To evaluate the fungal diversity in the Pirarungaua stream reopened after remaining channeled about 40 years in the Botanical Garden of São Paulo, Brazil, two experiments in the cold and dry season and two in the hot and rainy season were performed. Leaves of Tibouchina pulchra Cogn and mixed leaf litter were confined in nylon litter bags, submerged and collected monthly, together with free leaf litter samples. Some abiotic factors were measured in the water. The leaves were fragmented, incubated in sterile water at 22 ºC and microscopically analyzed. We identified 33 conidial fungal taxa, among which, 23 are new to this area. Comparing seasons, the similarity of the mycota of confined T. pulchra leaves corresponded to 39% and to 56% regarding the confined mixed leaf litter. Similarities of 48-50% occurred between the mycota of confined and free leaf litter samples. Confined leaves showed a tendency to support higher numbers of species, whereas some rare fungi like Ulocoryphus mastigophorus Michaelides L. Hunter & W.B Kendr were more frequent in free leaf litter. Based on the results, it is recommended to monitor the limnological conditions of the stream and to promote awareness among the local population and visitors about the importance of a water body, even artificial, for the establishment of microclimatic features, and for the biodiversity of fungi. Keywords: aquatic Hyphomycetes, conidial fungi, fungal diversity, stream recovery RESUMO -(Diversidade de fungos conidiais e algumas variáveis abióticas da água após a reabertura do córrego Pirarungaua no Jardim Botânico, São Paulo, SP, Brasil). Para avaliar a diversidade de fungos no córrego Pirarungaua, reaberto após ter permanecido canalizado por cerca de 40 anos no Jardim Botânico de São Paulo, Brasil, foram realizados dois experimentos nas estações frias e secas e duas nas estações quentes e chuvosas. Folhas de Tibouchina pulchra Cogn e folhedo misto foram confinados em sacos de tela de nylon, submersas e coletadas mensalmente, juntamente com amostras de folhedo livre submerso. Alguns fatores abióticos foram medidos na água. As folhas foram fragmentadas, incubadas em água esterilizada, a 22 ºC e microscopicamente analisadas, identificando-se 35 táxons de fungos conidiais, entre os quais 23 são novos para a área. Comparando as estações climáticas, a similaridade da micota confinada de T. pulchra correspondeu a 38% e a 56% com relação ao folhedo misto confinado. As folhas confinadas mostraram a tendência de oferecer suporte a maior número de espécies, enquanto alguns fungos raros como Ulocoryphus mastigophorus Michaelides L. Hunter & W.B Kendr foram mais frequentes no folhedo livre. Com base nos resultados é recomendado o monitoramento das condições limnológicas do córrego e conscientização da população local e dos visitantes sobre a importância que um corpo d' água, mesmo art...