Sinomyces gen. nov. is described for Ulocladium alternariae and two new species from China. These three species differ from Ulocladium in producing simple conidiophores with a single, cicatrized apical pore or 1 or 2 short, uniperforate, geniculate sympodial proliferations. Phylogenetic analysis of partial DNA sequences of the glyceraldehyde-3-phosphate dehydrogenase gene (gpd) gene and a fragment of the Alternaria alternata major allergen (Alt a 1) gene, using Maximum-Parsimony (MP), Maximum-Likelihood (ML) and Bayesian approaches, indicates that Sinomyces is distinct within the Alternaria-Stemphylium complex, although its closest relatives could not be determined. Sinomyces alternariae comb. nov. and the new species Sinomyces obovoideus and Sinomyces fusoideus are proposed.
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