taxonID	type	description	language	source
03EB6941FF87FFF38CDDF94AFD4AFE5A.taxon	description	MycoBank no.: MB 855092	en	Wei, Yong-Qi, Han, Dong-Fang, Huang, Zhi-Bo, Li, Zhuang, Dong, Xu, Tian, Jia-Hui, Shen, Jing-Xu, Wang, Pan-Meng (2025): Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China. Phytotaxa 717 (2): 200-208, DOI: 10.11646/phytotaxa.717.2.6, URL: https://doi.org/10.11646/phytotaxa.717.2.6
03EB6941FF87FFF38CDDF94AFD4AFE5A.taxon	etymology	Etymology: — the epithet, macrosporum, referring to the species having relatively larger basidiospores (x = 6.17 ± 0.54 × 4.0 ± 0.47 μm; Q = (1.16 –) 1.31 – 2.0 (– 2.37), Q m = 1.57 ± 0.22) than the other Cotylidia species.	en	Wei, Yong-Qi, Han, Dong-Fang, Huang, Zhi-Bo, Li, Zhuang, Dong, Xu, Tian, Jia-Hui, Shen, Jing-Xu, Wang, Pan-Meng (2025): Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China. Phytotaxa 717 (2): 200-208, DOI: 10.11646/phytotaxa.717.2.6, URL: https://doi.org/10.11646/phytotaxa.717.2.6
03EB6941FF87FFF38CDDF94AFD4AFE5A.taxon	diagnosis	Diagnosis: — Basidiome grows on soil. Pileus surface light brownish white at the margin and the centre. Basidiospores (5 –) 5.5 – 7 (– 7.2) × 3 – 4.5 (– 5) μm, characterized as an obvious apiculus.	en	Wei, Yong-Qi, Han, Dong-Fang, Huang, Zhi-Bo, Li, Zhuang, Dong, Xu, Tian, Jia-Hui, Shen, Jing-Xu, Wang, Pan-Meng (2025): Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China. Phytotaxa 717 (2): 200-208, DOI: 10.11646/phytotaxa.717.2.6, URL: https://doi.org/10.11646/phytotaxa.717.2.6
03EB6941FF87FFF38CDDF94AFD4AFE5A.taxon	materials_examined	Type: — CHINA. Shandong Province: Ji’nan City, Longdong Scenic Area, on the ground of the forest dominated by Phyllostachys propinqua, elev. 197 m, 26 August 2023, P. M. Wang 345 (EFHAAU 10589, holotype!). [GenBank accession numbers — ITS: PP 852381, nrLSU: PQ 118009; all from holotype].	en	Wei, Yong-Qi, Han, Dong-Fang, Huang, Zhi-Bo, Li, Zhuang, Dong, Xu, Tian, Jia-Hui, Shen, Jing-Xu, Wang, Pan-Meng (2025): Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China. Phytotaxa 717 (2): 200-208, DOI: 10.11646/phytotaxa.717.2.6, URL: https://doi.org/10.11646/phytotaxa.717.2.6
03EB6941FF87FFF38CDDF94AFD4AFE5A.taxon	description	Description: — Basidiomes pileate, fasciculate, infundibuliform to flabelliform, often in groups becoming confluent, stipitate, 1.8 – 3.8 cm high, 1.2 – 4.6 cm wide. Pileus circular, deeply infundibuliform, coriaceous, very thin, pileus surface light brownish white at the margin and the centre (5 A 1 – 5 A 2), sometimes zonate. Stipe central, 0.5 – 2.0 cm long, 0.2 – 1.2 cm wide, white (5 A 1) to light brownish white (5 A 1 – 5 A 2), tomentose, with white mycelial cords at base. Hymenophore thin, coriaceous. Hyphal system monomitic; Generative hyphae without clamps, 5 – 8 μm wide, hyaline, thin- to thick-walled; hymenial cystidia absent. Basidiospores [138 / 14 / 6] (5 –) 5.5 – 7 (– 7.2) × 3 – 4.5 (– 5) μm (x = 6.17 ± 0.54 × 4.0 ± 0.47 μm; Q = (1.16 –) 1.31 – 2.0 (– 2.37), Q m = 1.57 ± 0.22) ellipsoid to oblong, with an obvious apiculus, thin-walled, hyaline, smooth, inamyloid. Basidia narrowly clavate, 35 – 45 × 5.5 – 8 μm, 4 - spored. Clamp connections absent in all parts of basidiomata.	en	Wei, Yong-Qi, Han, Dong-Fang, Huang, Zhi-Bo, Li, Zhuang, Dong, Xu, Tian, Jia-Hui, Shen, Jing-Xu, Wang, Pan-Meng (2025): Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China. Phytotaxa 717 (2): 200-208, DOI: 10.11646/phytotaxa.717.2.6, URL: https://doi.org/10.11646/phytotaxa.717.2.6
03EB6941FF87FFF38CDDF94AFD4AFE5A.taxon	biology_ecology	Habitat and distribution: — fasciculate on the ground in the forest with Pinus massoniana and Castanea mollissima in Puzhao Temple (Tai’an City, Shandong Province, China) and Phyllostachys propinqua in Longdong Scenic Area (Ji’nan City, Shandong Province, China). The sequences on NCBI indicate that this species is also distributed in Guizhou and Sichuan Provinces.	en	Wei, Yong-Qi, Han, Dong-Fang, Huang, Zhi-Bo, Li, Zhuang, Dong, Xu, Tian, Jia-Hui, Shen, Jing-Xu, Wang, Pan-Meng (2025): Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China. Phytotaxa 717 (2): 200-208, DOI: 10.11646/phytotaxa.717.2.6, URL: https://doi.org/10.11646/phytotaxa.717.2.6
03EB6941FF87FFF38CDDF94AFD4AFE5A.taxon	materials_examined	Additional specimens examined: — CHINA. Shandong Province: Tai’an City, Puzhao Temple of Mount Tai Scenic Area, on the ground of the forest dominated by Pinus massoniana and Castanea mollissima, elev. 410 m, 12 September 2022, P. M. Wang 083 (EFHAAU 10583), 084 (EFHAAU 10584), 085 (EFHAAU 10585), 086 (EFHAAU 10586), 087 (EFHAUU 10587) and 088 (EFHAAU 10588). Shandong Province: Ji’nan City, Longdong Scenic Area, on the ground of the forest dominated Phyllostachys propinqua, elev. 197 m, 26 August 2023, Y. Q. Wei 205 (EFHAAU 10590) [GenBank accession numbers — ITS: PQ 120976, nrLSU: PQ 118037].	en	Wei, Yong-Qi, Han, Dong-Fang, Huang, Zhi-Bo, Li, Zhuang, Dong, Xu, Tian, Jia-Hui, Shen, Jing-Xu, Wang, Pan-Meng (2025): Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China. Phytotaxa 717 (2): 200-208, DOI: 10.11646/phytotaxa.717.2.6, URL: https://doi.org/10.11646/phytotaxa.717.2.6
03EB6941FF87FFF38CDDF94AFD4AFE5A.taxon	discussion	Remarks: — Cotylidia macrosporum is characterized by its rugose pileus surface, which appears light brownish white at the margin and the centre and relatively bigger basidiospores measuring (5 –) 5.5 – 7 (– 7.2) × 3 – 4.5 (– 5) μm. Phylogenetically, C. macrosporum is related to C. fibrae and C. aurantiaca var. alba in the phylogenetic analyses based on ITS and nrLSU sequence, respectively.	en	Wei, Yong-Qi, Han, Dong-Fang, Huang, Zhi-Bo, Li, Zhuang, Dong, Xu, Tian, Jia-Hui, Shen, Jing-Xu, Wang, Pan-Meng (2025): Cotylidia macrosporum (Rickenellaceae, Hymenochaetales), a new species from Shandong Province, China. Phytotaxa 717 (2): 200-208, DOI: 10.11646/phytotaxa.717.2.6, URL: https://doi.org/10.11646/phytotaxa.717.2.6
