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Issue: Vol. 717 No. 2: 10 Sept. 2025
Type: Article
Published: 2025-09-10
DOI: 10.11646/phytotaxa.717.2.6
Page range: 200-208
Abstract views: 743
PDF downloaded: 7

Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China

College of Plant Protection, Shandong Agricultural University, Tai’an, 271018, China
Shandong Academy of Environmental Science Co, Ltd, Ji’nan, 250109, China
College of Plant Protection, Shandong Agricultural University, Tai’an, 271018, China
College of Plant Protection, Shandong Agricultural University, Tai’an, 271018, China
College of Plant Protection, Shandong Agricultural University, Tai’an, 271018, China
College of Plant Protection, Shandong Agricultural University, Tai’an, 271018, China
Shandong Academy of Environmental Science Co, Ltd, Ji’nan, 250109, China
College of Plant Protection, Shandong Agricultural University, Tai’an, 271018, China
Fungal taxonomy phylogeny hymenomycetes clade Cotylidia Fungi

Abstract

A new species, Cotylidia macrosporum, is described and illustrated from Puzhao Temple of Mount Tai Scenic Area (Tai’an City, Shandong Province, China) and Longdong Scenic Area (Ji’nan City, Shandong Province, China). It is described as a new species based on morphological, molecular and ecological evidence. Our molecular phylogenetic analyses based on DNA sequences of the internal transcribed spacers 1 and 2 with the 5.8S rDNA (ITS) and large subunit of nuclear ribosomal DNA (nrLSU) support the inclusion of this new species in the genus Cotylidia as it forms an independent clade in the phylogenetic tree. Morphologically, Cotylidia macrosporum differs from any known species by the combination of basidiome growing on soil, light brownish white pileus on the surface, and relatively big basidiospores (x = 6.17 ± 0.54 × 4.0 ± 0.47 μm; Q = (1.16–) 1.31–2.0 (–2.37), Qm = 1.57 ± 0.22). We present this new species with illustrated morphological description, phylogeny and comparison with morphologically similar or phylogenetically related species.

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How to Cite

Wei, Y.-Q., Han, D.-F., Huang, Z.-B., Li, Z., Dong, X., Tian, J.-H., Shen, J.-X. & Wang, P.-M. (2025) Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China. Phytotaxa 717 (2): 200–208. https://doi.org/10.11646/phytotaxa.717.2.6