Neohormodochis septispora gen. et sp. nov. (Stictidaceae) from Yunnan Province, China Author Wei, De-Ping Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand & CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P. R. China Author Gentekaki, Eleni Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand & School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand Author Wanasinghe, Dhanushka N. CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P. R. China & Centre for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe County 654400, Yunnan, P. R. China Innovative Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, P. R. China Author Hyde, Kevin D. CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P. R. China & Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand Author To-Anun, Chaiwat 0000-0001-8098-3390 Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand & chaiwat. toanun @ gmail. com; https: // orcid. org / 0000 - 0001 - 8098 - 3390 chaiwat.toanun@gmail.com Author Cheewangkoon, Ratchadawan 0000-0001-8576-3696 Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand & ratchadawan. c @ cmu. ac. th; https: // orcid. org / 0000 - 0001 - 8576 - 3696 ratchadawan.c@cmu.ac.th text Phytotaxa 2022 2022-11-23 573 2 247 261 http://dx.doi.org/10.11646/phytotaxa.573.2.5 journal article 194616 10.11646/phytotaxa.573.2.5 80c0dfdc-2eb9-4d4d-b10d-b7cb911acc21 1179-3163 7349970 Neohormodochis D.P.Wei & K.D.Hyde , gen. nov. Index Fungorum number: IF559771 Faces of Fungi number: FoF12297 Etymology: The epithet refers to the close phylogenetic relationship with Hormodochis . Type species: Neohormodochis septispora D. P. Wei and K. D. Hyde , sp. nov. Saprobic on dead twigs. Sexual morph : Undetermined. Asexual morph : Conidiomata perithecial, immersed, conical to subglobose, gregarious, white-pruinose. Conidiomatal wall consisting of hyaline, intricate hyphae, encompassed with crystalline substances. Conidiophores reduced to conidiogenous cells. Conidiogenous cells holoblastic, hyaline, cylindrical, developing from hyphae of conidiomatal wall. Conidia hyaline, ellipsoidal, twocelled, occasionaly asepate, slightly curved, forming branched chains. Notes: Neohormodochis was introduced to accommodate the new species N. septispora which was found on dead twigs in Yunnan Province , China . The new species nested with Hormodochis as a sister clade. Hormodochis is known from three asexual morphic species viz. H. aggregata , H. eucalypti and H. melanochlora . All three species have non-pruinose conidiomata, non-crystalline conidiomatal wall of thin-walled, brown textura angularis , holothallic conidiogenous cells with upper cells becoming fertile, septate and disarticulating into arthroconidia. The arthroconidia are olivaceous brown, aseptate, subcylindrical to somewhat doliiform, with truncate ends ( Crous et al. 2020a ). However, Neohormodochis septispora produces white-pruinose conidiomata, crystalline conidiomatal wall and hyaline, holobalstic conidiogenous cells with upper cells becoming fertile and budding new conidia rather than arthroconidia. The conidia of N. septispora are hyaline, ellipsoidal, dominantly septate, slightly curved, round at both ends. Phylogenetic placement and differences on morphology of conidiomata, conidiomatal wall, and conidia as well as conidiogenesis separate our collections from Hormodochis .