Iugisporipsathyrareticulopilea gen. et sp. nov. (Agaricales, Psathyrellaceae) from tropical China produces unique ridge-ornamented spores with an obvious suprahilar plage

Sheng-Nan Wang; Yu-Guang Fan; Jun-Qing Yan

doi:10.3897/mycokeys.90.85690

Iugisporipsathyrareticulopilea gen. et sp. nov. (Agaricales, Psathyrellaceae) from tropical China produces unique ridge-ornamented spores with an obvious suprahilar plage

MycoKeys. 2022 Jun 22:90:147-162. doi: 10.3897/mycokeys.90.85690. eCollection 2022.

Authors

Sheng-Nan Wang^{1

2}, Yu-Guang Fan³, Jun-Qing Yan^{1

2}

Affiliations

¹ Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China.
² Key Laboratory of State Forestry Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China.
³ Institute of Edible Mushrooms, Fujian Academy of Agricultural Sciences; National and Local Joint Engineering Research Center for Breeding & Cultivation of Features Edible Mushrooms, Fuzhou 350011, China.

Abstract

Iugisporipsathyra, a new psathyrelloid genus from tropical red soil of China, is established with I.reticulopilea as the type species. The new genus is characterised by basidiomata psathyrelloid, pileus rugose to appearing reticulate ridged, covered by persistent, but inconspicuous villus, pleurocystidia absent and ridge-ornamented spores with an obvious suprahilar plage. The genus is unique amongst Psathyrellaceae in producing ridge-ornamented spores with an obvious suprahilar plage and forms a distinct lineage within Psathyrellaceae, based on the Maximum Likelihood and Bayesian Inference analyses of a combined three-gene sequence dataset (ITS, LSU and β-tub). Full descriptions and photographs of the new genus and species are presented.

Keywords: Basidiomycete; fungal phylogeny; taxonomy.

Sheng-Nan Wang, Yu-Guang Fan, Jun-Qing Yan.

Grants and funding

This work was financed by the National Natural Science Foundation of China (31960008, 31860009), The Project of FAAS (XTCXGC2021007), and Jiangxi Provincial Natural Science Foundation (20202BABL213041). Sincere thanks to the anonymous reviewers of the manuscript.