Abstract
A description is provided for a new anamorph genus Sympodiomycopsis (Hyphomycetes), which is neither ballistosporogenous nor sterigmatosporogenous. The genus is typified by S. paphiopedili sp. nov. and accommodates one species which was isolated from nectar of Paphiopedilum primurinum in Japan. Phenotypically, the genus shows some similarity to Sympodiomyces because of the presence of a yeast morph with sympodial conidiogenous cell proliferation, but it is distinguished from that genus morphologically by a yeast morph with the enteroblastic-annellidic conidiogenesis and the conspicuous development of a hyphal morph with holoblastic-sympodial conidiogenous cells, and chemotaxonomically by the ubiquinone system Q-10 and 10% difference in the guanine plus cytosine (G + C) content of the nuclear DNA. Phylogenetically, the type of cell wall and septal pore ultrastructure, and the primary biochemical and chemotaxonomic characters of S. paphiopedili indicate a basidiomycetous affinity.
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