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Original Article

Taxonomy of Exophiala werneckii and its relationship to Microsporum mansonii

Pages 145-154 | Published online: 09 Jul 2009
 

Abstract

Study of the neotype culture of Exophiala werneckii (Cladosporium werneckii), as well as additional isolates, has shown that the yeast-like and hyphal conidiogenous cells are annellides. E. werneckii cannot be accommodated in Cladosporium, a genus characterized by catenulate holoblastic coanidia. E. werneckii and the dematiaceous hyphomycete that Castellani misidentified as Microsporum mansonii (Cladosporium mansonii) are two entirely different fungi. M. mansonii is considered to be a synonym of Malassezia furfur since both names were used to describe in tissue the etiologic agent of pityriasis versicolor.

Resúmen

El estudio del cultivo neotipo de Exophiala werneckii (Cladosporium werneckii) al igual que el de cepas adicionales, muestra que las células conidiogenas tanto de las hifas como de las semejantes a levaduras son anelides. E. werneckii no puede ser incluído en el género Cladosporium caracterizado por su conidía catenulada y holoblástica. E. werneckii y un hifomiceto dematiáceo que Castellani identificó incorrectamente como Microsporum mansonii (Cladosporium mansonii) son dos hongos completamente distintos. Microsporum mansonii es considerado ser un sinónimo de Malassezia furfur pues ambos nombres fueron usados para describir en tejido el agente etiológico del pitiríasis versicolor.

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