Morphology and molecular study of three new Cordycipitoid fungi and its related species collected from Jilin Province, northeast China Author Hu, Jia-Jun School of Life Science, Northeast Normal University, Changchun City, 130024, Jilin Province, China & Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China Author Zhao, Gui-Ping Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China Author Tuo, Yong-Lan Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China Author Dai, Dan https://orcid.org/0000-0002-9642-2480 Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China Author Guo, Di-Zhe Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China & Hebei Normal University of Science and Technology, Qinghuangdao City, 066004, Hebei Province, China Author Rao, Gu Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China Author Qi, Zheng-Xiang Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China Author Zhang, Zhen-Hao Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China Author Li, Yu Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China fungi966@126.com Author Zhang, Bo Engineering Research Centre of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, Changchun City, 130118, Jilin Province, China zhangbofungi@126.com text MycoKeys 2021 2021-09-27 83 161 180 http://dx.doi.org/10.3897/mycokeys.83.72325 journal article http://dx.doi.org/10.3897/mycokeys.83.72325 1314-4049-83-161 35998297DB265DD784252428A6B387AC Cordyceps changbaiensis J.J. Hu, Bo Zhang & Y. Li sp. nov. Figs 5 , 6 Holotype. China. Jilin Province, Yanbian Korean Autonomous Prefecture, Antu County, Changbai Mountain, 42.19°N , 128.18°E , 4 September 2019, Jia-Jun Hu & Bo Zhang (HMJAU 48255, holotype, GenBank Acc. nos.: ITS = MW893252, LSU = MW893277, EF-1α = MZ616772). Etymology. Cordyceps changbaiensis : referring to Mt. Changbai, the location of the holotype. Diagnosis. The species is characterised by orange to white and branched stromata, globose to ovoid perithecia and larger part-spores (3.0-7.0 x 1.0-1.4 μm ). Figure 5. Morphological characters of Cordyceps changbaiensis (HMJAU 48255, holotype) a stromata and host of Cordyceps changbaiensis b host of Cordyceps changbaiensis c, d surface of fertile apex of ascostroma e-h ascus i-k apex of ascus l-m part-spores. Scale bars: 1 cm ( a ); 5 mm ( b-c ); 200 μm ( d ); 20 μm ( e-h ); 10 μm ( i-k ); 5 μm ( l-m ). Description. Sexual Morph. Stromata 2.4-5.2 cm long, single or multiple, solitary, arising from the head of the host insect covered with white mycelia. Fertile apical portion, orange, clavate to cylindrical, 0.6-1.5 cm long and 0.2-0.6 cm wide, obviously distinguishable from the stipe. Sterile stipe fleshy, white to light yellow, cylindrical, 1.8-3.7 cm long and 0.2-0.5 cm wide. Perithecia immersed to the surface of the fruiting body, globose to ovoid, 120-230 x 90-170 μm , with a thick wall about 15 μm . Asci cylindrical, 225-625 x 4-5 μm , 8-spored, apex of ascus hemispherical, 3.0-4.0 x 2.2-3.2 μm . Part-spores oblong, 3.0-7.0 x 1.0-1.4 μm , smooth, hyaline in 3% KOH, thin-walled, inamyloid. Figure 6. Microscopical characters of Cordyceps changbaiensis (HMJAU 48255, holotype) a perithecia b apex of ascus c part-spores. Scale bars: 100 μm ( a ); 5 μm ( b, c ). Asexual Morph. Unknown. Host. Growing on larvae of Lepidoptera . Distribution. China (Jilin Province). Other specimen examined. China. Jilin Province: Baishan City, Fusong County, Quanyang Town, 42.30°N , 127.29°E , 22 August 2021, Jia-Jun Hu, Bo Zhang & Gui-Ping Zhao (HMJAU 482260, isotype, GenBank Acc. nos.: ITS = MW893270, LSU = MW893272, EF-1α = MZ616774) Note. C. changbaiensis has orange to white and branched stromata. Morphologically, C. roseostromata Kobayasi & Shimizu is similar to C. changbaiensis due to the single or branched stromata. C. kyushuensis A. Kawam. is also close to C. changbaiensis because of the host and the stromata being similar in colour. However, both C. roseostromata and C. kyushuensis have a larger perithecia and smaller part-spores. Furthermore, the stromata of C. kyushuensis is gregarious or fascicled and grows from the head or abdomen of the host ( Li et al. 2015 ); C. roseostromata has pyriform perithecia and host on larva of Coleoptera ( Kobayasi 1983 ). In the phylogenetic analysis, C. changbaiensis was placed in separate monophyletic lineages (BPP = 0.95, MLBS = 97%) and formed a sister relationship with C. rosea .