Two new species of Clitocella are proposed based on morphological and phylogenetic investigations. Clitocella borealichinensissp. nov. is closely related to C. orientalis but distinguished from the latter by its slightly smaller basidiospores and hyphae of pileipellis with pale brown to brown intracellular or parietal pigment. Clitocella coloratasp. nov. is closely related to C. popinalis and C. mundula in macromorphology but is differentiated from C. popinalis by its slightly smaller basidiospores and the difference in genetic profile, and from C. mundula by its relatively colorful pileus (white to yellowish white, grayish white to grayish brown, pink white). Phylogenetic analyses based on sequence data from five different loci (ITS, nrLSU, tef1, rpb2 and atp6) support the taxonomic position of the two new species in the genus Clitocella. The illustrations and descriptions for the new taxa are provided.

Within the family Inocybaceae, many species of Mallocybe and Pseudosperma have been reported, but there are only a few reports on these two genera from north China. In this study, six collections of Mallocybe and 11 collections of Pseudosperma were studied by morphological and phylogenetic methods. Phylogenetic analyses based on sequence data from three or two different loci (ITS, LSU, and rpb2 for Mallocybe; ITS and LSU for Pseudosperma) are performed to infer species relationships within genera Mallocybe and Pseudosperma, respectively. Results indicate that eight species of Mallocybe and Pseudosperma are found in Shanxi province, north China; two new species of Mallocybe, M. depressa and M. picea, are described. Overall, six species belong to Pseudosperma, of which three are new: P. gilvum, P. laricis and P. pseudoniveivelatum.

Bonomyces pseudoarnoldii is the name proposed for a new species found in north China, based on both morphological and molecular data. Phylogenetic analyses on sequence data from five different loci (ITS, SSU, LSU, tef1 and rpb2) support that this species belongs to the genus Bonomyces. Bonomyces pseudoarnoldii resembles other species of Bonomyces in its small reddish brown to pale orange pileus covered with finely to coarsely fibrillose or minute squamules, and pale white to reddish brown stipe with longitudinal fibrils. The new species is presented with illustrated description, molecular data, and comparison to related or similar species. We provide a key to the known species of Bonomyces in the world.

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Malanogaster are ectomycorrhizal fungi characterized by hypogeous fruitbodies. Many ITS rDNA sequences of Malanogaster are recovered from molecular surveys of fungal communities, and remain insufficiently identified making it difficult to determine whether these sequences represent conspecific or novel taxa. In this study, the ITS sequences of Malanogaster were collected comprehensively and analyzed within ITS-based phylogenetic framework. Twenty-one distinct phylogenetic species can be distinguished based on the ITS phylogeny and a threshold of 98% ITS sequence identity, and most species of Melanogaster showed more than 98.1% intraspecific ITS identity and less than 97.9% interspecific identity. Ten species were recognized from China, but combined morphology, nine of which were described and illustrated in this manuscript, including 4 new species (M. minobovatus nov. sp., M. panzhihuaensis nov. sp., M. quercus nov. sp. and M. tomentellus nov. sp.), 1 new combination (M. obvatus comb. & stat. nov.), and 4 known species (M. broomeanus, M. shanxiensis, M. spinisporus, M. subglobisporus). Significantly amendments were added to M. spinisporus and M. subglobisporus. M. fusisporus was added a new mature specimen from type location, and the description and exquisite illustrations were provided also. The diagnostic characteristics of the genus Melanogaster and a key to the Chinese species of the genus Melanogaster were provided. A 28 Sphylogeny was also conducted to confirm the phylogenetic locations of Chinese Melanogaster species and “Alpova trappei”, consistented with ITS analysis.