Hai-Sheng Yuan

Trichaptum (Basidiomycota, Hymenochaetales) from China with a description of three new species.

Trichaptum imbricatum, T. perenne and T. podocarpi are three new species from China. They are described, illustrated and compared in this paper with similar species. Trichaptum imbricatum is unique in its imbricate basidiocarps, white to cream hymenophores, small and regular pores, and scattered and thin-walled cystidia. Trichaptum perenne differs from other species in the genus in its perennial and pileate habit, its large pores and entire dissepiments, and oblong, ellipsoid basidiospores. Trichaptum podocarpi is distinguished in having totally resupinate basidiocarps, distinctly long cystidia, and in its habitat on Podocarpus. A key to species of Trichaptum occurring in China is provided; statistical variations of spore dimensions for each species are included in the key.

Polypores (Basidiomycota) from Qin Mts. in Shaanxi Province, Central China

133 species of polypores were identified based mostly on collections from Qin Mts. of southern Shaanxi Province, central China. A checklist of the polypores with substrate and collecting data is supplied. Two new species, Polyporus rhododendri Y.C. Dai & H.S. Yuan and Postia qinensis Y.C. Dai & Y.L. Wei, are described and illustrated. The former is an elegant species growing on Rhododendron, and it has almost sessile basidiocarps; microscopically it is characterized by fusiform basidiospores. The latter is characterized by white, soft, resupinate to effused-reflexed basidiocarps, abundant gloeocystidia, cylindric to slightly allantoid basidiospores.

A novel Phellinidium sp. causes laminated root rot on qilian juniper (Sabina przewalskii) in northwest China.

A laminated root rot on Qilian juniper (Sabina przewalskii) caused by a species of Phellinidium (Basidiomycota) was observed in northwest China. Seventeen fungal samples collected from Qinghai Province during 2012 and 2013 were used for taxonomic and pathogenicity tests. The fungal pathogen was identified by morphological characters and phylogenetic analyses based on nLSU sequences. A new fungus is described herein as Phellinidium qilianense sp. nov. One-year-old Qilian juniper seedlings were wound-inoculated under controlled conditions to test pathogenicity of the fungal species. The fungus was successfully reisolated from decayed tissue of tested seedlings. P. qilianense is a new forest pathogen on coniferous trees in China.

Molecular phylogenetic evaluation of Antrodiella and morphologically allied genera in China

Three new wood-decaying polypores from China, Antrodiella lactea, A. nanospora and Frantisekia abieticola, are described and illustrated using morphological characteristics and rDNA internal transcribed spacer (ITS) and large subunit (LSU) sequences. Phylogenetic analyses of the generated sequences, along with those retrieved from GenBank, confirmed the polyphyly of the genus Antrodiella. The Antrodiella s.s. clade includes A. citrinella, A. faginea, A. hoehnelii, A. ichnusana, A. lactea, A. micra, A. nanospora, A. onychoides, A. pallasii, A. pallescens, A. parasitica, A. romellii, A. semisupina and A. stipitata. Antrodiella albocinnamomea and A. zonata grouped with Cerrena unicolour in the Cerrena clade, and they are transferred to Cerrena, as C. albocinnamomea and C. zonata were proposed. The main morphological characters of the genus Antrodiella s.s., and discriminating characters of the new species and the closely related species are discussed.

Antrodiella chinensis sp. nov., a Chinese representative of the Antrodiella americana complex

A new wood-decaying polypore, Antrodiella chinensis, is described and illustrated from China based on morphological characteristics and phylogenetic analysis of rDNA ITS sequences. The new species belongs to the Antrodiella americana complex, and is characterized by an annual habit, resupinate basidiocarps, cream to straw coloured pore surface with larger and regular pores, and oblong-ellipsoid basidiospores. Discriminating characteristics between the new species and the closely related species in the complex are discussed.

A new sesquiterpene from the medicinal fungus Inonotus vaninii

A novel sesquiterpene, named inonolane A (1), was isolated from the EtOAc extract of the medicinal fungus Inonotus vaninii, together with two known compounds, phellilane D (2) and N-[2-(1H-indol-3-yl)-2-oxo-ethyl]acetamide (3). Their structures were elucidated by means of extensive NMR and MS spectroscopic analysis. Compound 1 represents the first bisabolane type sesquiterpene from the genus Inonotus.

Morphological and ITS rDNA-based phylogenetic identification of two new species in Tinctoporellus

Two new poroid wood-inhabiting basidiomycetes, Tinctoporellus bubalinus and T. hinnuleus, are described and illustrated based on morphological characteristics and phylogenetic analysis of rDNA ITS sequences. Tinctoporellus bubalinus is characterized by annual, resupinate basidiocarps, white to buff coloured pore surface and thin- to slightly thick-walled, richly branched and contorted dendrohyphidia. Tinctoporellus hinnuleus is characterized by annual, resupinate basidiocarps, cinnamon, clay-buff to fawn pore surface, thin-walled, richly branched and contorted brown dendrohyphidia. Discriminating characters between the new species and the closely related species are discussed. A key to accepted species in Tinctoporellus is provided.

Type Studies on Polypores Described by J. D. Zhao

Type materials of 15 polypores described from China by Ji-Ding Zhao and other mycologists were re-examined. Nine of the 15 names are synonymized, two species are accepted, and one name is a nomen dubium; two species belong to other genera according to modern taxonomy, and one name is illegitimate. One new combination, Funalia thujae (J.D. Zhao) Y.C. Dai & H.S. Yuan, is proposed, and an illustrated description of it is given.

Hydnaceous fungi of China 2. Mycorrhaphium sessile sp nov.

Mycorrhaphium sessile is described as new species found in Yunnan and Guizhou Province, southwestern China, and it is characterized by sessile basidiocarps, hydnoid hymenophore, presence of gloeocystidia, and small, smooth, ellipsoid, non-amyloid basidiospores. The differences among Mycorrhaphium, Climacodon, Mycoleptodonoides, Steccherinum and Stecchericium are discussed.

Hydnaceous fungi of China 4. Mycoleptodonoides tropicalis sp nov., and a key to the species in China

Mycoleptodonoides tropicalis is illustrated and described as a new species from tropical forest in Yunnan Province, southwestern China. It is morphologically characterized by fan-shaped basidiocarps, hydnoid hymenophore, fusiform cystidia, and smooth, subglobose to globose, non-amyloid basidiospores. A key to the Chinese species of Mycoleptodonoides is given.