Mycena yuezhuoi sp. nov. (Mycenaceae, Agaricales), a purple species from the peninsula areas of China Author Liu, Zewei 0000-0002-2700-0831 Institute of Mycological Science and Technology, School of Agriculture, Ludong University, Yantai 264025, China & liuzewei 990110 @ 126. com; https: // orcid. org / 0000 - 0002 - 2700 - 0831 Author Na, Qin 0000-0001-8406-6389 Institute of Mycological Science and Technology, School of Agriculture, Ludong University, Yantai 264025, China & naqin 19890317 @ 163. com; https: // orcid. org / 0000 - 0001 - 8406 - 6389 Author Cheng, Xianhao 0000-0002-5922-9913 Institute of Mycological Science and Technology, School of Agriculture, Ludong University, Yantai 264025, China & chengxianhao @ sohu. com; https: // orcid. org / 0000 - 0002 - 5922 - 9913 chengxianhao@sohu.com Author Wu, Xiaoming 0000-0001-9225-0039 Kunyushan National Nature Reserve, Yantai 264112, China & w 3215892 @ 163. com; https: // orcid. org / 0000 - 0001 - 9225 - 0039 Author Ge, Yupeng 0000-0001-5754-201X Institute of Mycological Science and Technology, School of Agriculture, Ludong University, Yantai 264025, China & gaiyupeng @ 126. com; https: // orcid. org / 0000 - 0001 - 5754 - 201 X text Phytotaxa 2021 2021-07-15 511 2 148 162 http://dx.doi.org/10.11646/phytotaxa.511.2.3 journal article 10.11646/phytotaxa.511.2.3 1179-3163 5426578 Key to species of sect. Calodontes known worldwide 1. Basidiospores inamyloid ....................................................................................................................................................................2 1. Basidiospores amyloid........................................................................................................................................................................5 2. Pileipellis not gelatinized ........................................................................................................................................... Mycena vinacea 2. Pileipellis gelatinized..........................................................................................................................................................................3 3. Caulocystidia absent.............................................................................................................................................. Mycena sirayuktha 3. Caulocystidia present..........................................................................................................................................................................4 4. Stipitipellis with sparse nodules ........................................................................................................................ Mycena subcorticalis 4. Stipitipellis smooth............................................................................................................................................. Mycena pearsoniana 5. Pileus without purple tint....................................................................................................................................................................6 5. Pileus with purple tint.........................................................................................................................................................................8 6. Q> 1.7............................................................................................................................................................. Mycena luteovariegata 6. Q <1.7................................................................................................................................................................................................7 7. Caulocystidia with apical excrescences.................................................................................................................. Mycena clarkeana 7. Caulocystidia smooth ..................................................................................................................................... Mycena nullawarrensis 8. Pileus and stipe pink...................................................................................................................................................... Mycena rosea 8. Pileus and stipe purple or purplish brown ..........................................................................................................................................9 9. Pleurocystidia present.......................................................................................................................................................................10 9. Pleurocystidia scarce or absent.........................................................................................................................................................13 10. Lamellae edge with dark purplish brown dots .................................................................................................................................11 10. Lamellae without dots ......................................................................................................................................................................12 11. Basidiospores almost less than 4 μm broad.......................................................................................................... Mycena pelianthina 11. Basidiospores almost more than 4 μm broad........................................................................................................ Mycena lammiensis 12. Cheilocystidia occurring mixed with basidia ................................................................................................................. Mycena dura 12. Cheilocystidia not occurring mixed with basidia ........................................................................................................... Mycena pura 13. Lamellae adnexed, dark brownish violet to reddish violet......................................................................................... Mycena diosma 13. Lamellae emarginate, white...................................................................................................................................... Mycena yuezhuoi