Notes of 15 unrecorded macrofungi in Korea Author Cho, Minseo Division of Environmental Science and Ecological Engineering, College of Life Sciences and Biotechnology, Author Kwon, Sun Lul BK 21 FOUR R & E Center for Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Author Jang, Seokyoon Division of Environmental Science and Ecological Engineering, College of Life Sciences and Biotechnology, & Forest Industrial Materials Division, National Institute of Forest Science, Seoul 02455, Republic of Korea Author Yoo, Yeonjae Division of Environmental Science and Ecological Engineering, College of Life Sciences and Biotechnology, Author Lee, Sang Hyun Division of Environmental Science and Ecological Engineering, College of Life Sciences and Biotechnology, Author Kwon, Dae Young Division of Environmental Science and Ecological Engineering, College of Life Sciences and Biotechnology, Author Kim, Changmu Species Diversity Research Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea Author Lim, Young Woon School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 08826, Republic of Korea ywlim@snu.ac.kr Author Kim, Jae-Jin Division of Environmental Science and Ecological Engineering, College of Life Sciences and Biotechnology, ywlim@snu.ac.kr text Journal of Species Research 2024 13 1 67 88 journal article 10.12651/JSR.2024.13.1.067 2713-8615 13161759 Mycena yuezhuoi Z.W. Liu, Y.P. Ge & Q. Na , Phytotaxa 511(2): 153 (2021) [MB#838747] ( Figs. 1L and 2L ) Korean name: flųjșḡfflŷ Pileus bell-shaped, decurved, 8-12 mm in diam. Pileus surface smooth, striate in the margin, light reddish brown in the center, becoming purple to the margin. Lamellae adnate, subdistant. Stipe central, equal, smooth, pale brown, 25-35 × 1-2 mm . Hyphal system monomitic, generative hyphae simple septate, rarely branched, without clamp connections, thin-walled, hyaline, 3.2-7.8 μm. Basidia cylindrical to subclavate, 4-spored, smooth, thin-walled, hyaline, with a clamp connection, 15.9-24.8 × 3.7-6.1 μm. Cheilocystidia rare, cylindrical to subclavate, 24.9-39.7 × 6.4-8.5 μm. Pleurocystidia absent. Basidiospores cylindrical, smooth, thin-walled, hyaline, sometimes bearing a guttule, 5.6-8.3 × 3.1-4.2 μm [Q = 1.81-1.98]. Specimen examined. Korea , Gyeongsangbuk-do , Cheongsong-gun , Juwangsan National Park , 36°24 ʹ 02.4 ʺ N , 127° 25 ʹ 58.8 ʺ E , 346 m , coniferous forest, occurring gregarious on ground covered with leaf litter near Yongchu Falls , 31 Jul 2019 , S . Jang and S . L . Kwon , KUC20190731-37 ( NIBR FG0000506126 ); 36°23 ʹ 56.6 ʺ N , 129°11 ʹ 41.5 ʺ E , 828 m , hardwood forest, occurring on decayed Oriental oak ( Quercus variabilis ) trunk near Gamebong , 11 Oct 2019 , S . Jang and S . L . Kwon , KUC20191011-27 A ( NIBRFG 0000506192 ) . Notes - Mycena yuezhuoi is classified as My. pura complex in Mycena sect. Calodontes and is characterized by lilac to purple and bell-shaped pileus less than 35 mm in diam ( Liu et al. , 2021 ; 2022 ). Mycena pearsoniana is grouped with My. yuezhuoi in the phylogenetic analysis ( Fig. 10 ). Mycena pearsoniana was previously reported in Juwangsan National Park ( Kwon et al. , 2020 ), which shows same habitat with KUC20190731-37 and KUC20191011-27A. Mycena pearsoniana differs from My. yuezhuoi by having a white to light brown pileus, clavate basidia, and wider basidiospores 5.5-9.1× 3.5-4.8 μm ( Singer, 1958 ; Maas Geesteranus, 1992 ; Kwon et al. , 2020 ).