Koorchaloma oryzae sp. nov. (Stachybotryaceae, Sordariomycetes), from Oryza sativa (Poaceae) in northern Thailand Author Tian, Xingguo 0000-0002-8124-1281 Centre for Mountain Futures, Kunming Institute of Botany, Kunming 650201, Yunnan, P. R. China. & School of Food and Pharmaceutical Engineering, Guizhou Institute of Technology, Guiyang 550003, P. R. China. & Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, Thailand. & CIFOR-ICRAF China Program, World Agroforestry (ICRAF), Kunming, P. R. China. & School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand. & tianxingguo 321 @ qq. com; https: // orcid. org / 0000 - 0002 - 8124 - 1281 tianxingguo321@qq.com Author Karunarathna, Samantha C. 0000-0001-7080-0781 Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. & CIFOR-ICRAF China Program, World Agroforestry (ICRAF), Kunming, P. R. China. & samantha @ mail. kib. ac. cn; https: // orcid. org / 0000 - 0001 - 7080 - 0781 samantha@mail.kib.ac.cn Author Mapook, Ausana 0000-0001-7929-2429 Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, Thailand. & phung. ausana @ gmail. com; https: // orcid. org / 0000 - 0001 - 7929 - 2429 phung.ausana@gmail.com Author Xu, Jianchu 0000-0002-2485-2254 Centre for Mountain Futures, Kunming Institute of Botany, Kunming 650201, Yunnan, P. R. China. & CIFOR-ICRAF China Program, World Agroforestry (ICRAF), Kunming, P. R. China. & jxu @ mail. kib. ac. cn; https: // orcid. org / 0000 - 0002 - 2485 - 2254 jxu@mail.kib.ac.cn Author Bao, Danfeng 0000-0002-5697-4280 Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, Thailand. & College of Agriculture & Biological Science, Dali University, Dali 671003, P. R. China. & 864143104 @ qq. com; https: // orcid. org / 0000 - 0002 - 5697 - 4280 864143104@qq.com Author Promputtha, Itthayakorn 0000-0003-3376-4376 Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. & itthayakorn. p @ cmu. ac. th; https: // orcid. org / 0000 - 0003 - 3376 - 4376 itthayakorn.p@cmu.ac.th Author Tibpromma, Saowaluck 0000-0002-4706-6547 Centre for Mountain Futures, Kunming Institute of Botany, Kunming 650201, Yunnan, P. R. China. & CIFOR-ICRAF China Program, World Agroforestry (ICRAF), Kunming, P. R. China. & saowaluckfai @ gmail. com; https: // orcid. org / 0000 - 0002 - 4706 - 6547 saowaluckfai@gmail.com text Phytotaxa 2021 2021-11-09 524 4 283 292 journal article 3647 10.11646/phytotaxa.524.4.4 c3add27d-2b70-4115-9ae3-d5c4032b8da5 1179-3163 5656300 Key to Koorchaloma species 1. Marine habitat..................................................................................................................................................................................... 2 1. Non-marine habitat............................................................................................................................................................................. 3 2. Mean conidium length/width ratio=3.4:1; conidiophores reduced to conidiogenous cells............................................... K. galateae 2. Mean conidium length/width ratio=2.9:1; conidiophores reduced to conidiogenous cells or not ................................ K. spartiniola 3. Species with Acremonium synanamorph ........................................................................................................................ K. dimorpha 3. Species without synanamorph ............................................................................................................................................................ 4 4. Conidia bearing mucoid appendage usually at the apex only, conidiomata not gelatinous ............................................ K. madreeya 4. Conidia bearing mucoid appendage usually at the apex only or at both ends, conidiomata gelatinous ............................................ 5 5. Conidia bearing mucoid appendage usually at the apex only ............................................................................................................ 6 5. Conidia bearing mucoid appendage at both ends ............................................................................................................................... 7 6. Conidiophores reduced to conidiogenous cells .................................................................................................................................. 8 6. Conidiophores macronematous .......................................................................................................................................................... 9 7. Conidia fusiform............................................................................................................................................................................... 10 7. Conidia naviculate............................................................................................................................................................................ 11 8. Conidia fusiform................................................................................................................................................................... K. oryzae 8. Conidia ellipsoid.............................................................................................................................................................. K. krabiense 9. Conidia fusiform............................................................................................................................................................. K. okamurae 9. Conidia naviculate............................................................................................................................................................ K. europaea 10. Conidiophores reduced to conidiogenous cells .............................................................................................................. K. bambusae 10. Conidiophores macronematous ........................................................................................................................................................ 12 11. Excipulum well developed; mean conidium length/width ratio=5.3:1; conidiophores reduced to conidiogenous cells ..................... ...................................................................................................................................................................................... K. jamaicensis 11. Excipulum less developed; mean conidium length/width ratio=3.9:1; conidiophores macronematous ..................... K. occidentalis 12. Mean conidium length/width ratio=3.5:1; conidia fusiform .................................................................................... K. novojournalis 12. Mean conidium length/width ratio=10:1; conidia subcylindrical ....................................................................................... K. scutiae