Lima, Laís Luana deKozovits, Alessandra RodriguesAssis, Daniele Magna Azevedo deSilva, Gladstone Alves daOehl, Fritz2021-10-132021-10-132014LIMA, L. L. de. et al. Cetraspora auronigra, a new glomeromycete species from Ouro Preto (Minas Gerais, Brazil). Sydowia v. 66, n. 2, p. 299–308, 2014. Disponível em: <https://doi.org/10.12905/0380.sydowia66(2)2014-0299>. Acesso em: 12 maio 2021.0082-0598http://www.repositorio.ufop.br/jspui/handle/123456789/13863Cetraspora auronigra, a new fungus of the Racocetraceae (Gigasporales, Glomeromycota), was found in a tropical mountainous forest and an adjacent ironstone outcrop located in the neighborhood of a mining area of Ouro Preto (Minas Gerais, southeastern Brazil). It forms bright yellow to golden-yellow, three-walled spores terminally on sporogenous cells and single, multiply lobed, hyaline to subhyaline germination shields on the outer surface of the inner (germinal) wall. The germinal wall stains dark purple to purple black in Melzer’s reagent. Spores of C. auronigra are most similar to the ‘apricot yellow’ to yellow brown spores of C. armeniaca, whose outer spore wall stains garnet red when exposed to Melzer’s reagent, while in C. auronigra this wall does not show any staining reaction. The name of the new fungus is dedicated to its spore colors, especially when exposed to Melzer’s reagent, and to the historical city Ouro Preto where the fungus was found in the rhizosphere of several annual and perennial plant species.pt-BRabertoArbuscular mycorrhizal fungiBiodiversityGigasporaceaeGlomeromycetesScutellosporaArtigo publicado em periodicoThe papers of Sydowia that is published at open access can be archived in institutional or funder repositories and made immediately available to the public. Fonte: Sydowia <http://www.sydowia.at/editorial_policy.htm> . Acesso em: 11 maio 2021.https://doi.org/10.12905/0380.sydowia66(2)2014-0299