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A new ergosterol, 15β-hydroxyl-(22E,24R)-ergosta-3,5,8,22-tetraen-one (1), along with three known ergosterols, two known cytochalasins, and two known azapholines were isolated from Chaetomium globosum Z1. The structures of these compounds were elucidated on the basis of spectroscopic methods (HR-ESI-MS, 1D NMR, and 2D NMR). Compound 6 showed significant cytotoxic activity against A-549 and MG-63 cell lines with IC 50 values of 6.96 and 1.73 μg/mL, respectively.

A new species of Wrightoporiopsis, W. irregularis sp. nov, is described and illustrated from southern China. It is characterized by annual, pileate, imbricated and sulphur yellow basidiocarps, irregular hymenophore varying from poroid to hydnoid, a monomitic hyphal structure in context but dimitic in the trama, generative hyphae bearing clam connections, indextrinoid skeletal hyphae, the absence of gloeocystidia, cystidia and gloeoplerous hyphae, the presence of fusoid cystidioles, ellipsoid, thin-walled, finely asperulate, strongly amyloid, and acyanophilous basidiospores measuring 2.8-3.3×2.2-2.5μm. Phylogenetic analysis based on the combined ITS (internal transcribed spacer region) and nLSU (the large nuclear ribosomal RNA subunit) dataset demonstrated W. irregularis is a new lineage in Wrightoporiopsis.