Modern taxonomic approaches to identifying diatrypaceous fungi from marine habitats, with a novel genus Halocryptovalsa Dayarathne & K. D. Hyde, gen. nov. Author Dayarathne, Monika C. Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100 (Thailand) World Agroforestry Centre East and Central Asia Office, 132 Lanhei Road, Kunming 650201 (China) Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan (China) monidaya 40 @ gmail. com (corresponding author) Author Wanasinghe, Dhanushka N. Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100 (Thailand) World Agroforestry Centre East and Central Asia Office, 132 Lanhei Road, Kunming 650201 (China) Author Devadatha, B. Biotechnology, School of Life Sciences, Pondicherry University, Kalapet, Pondicherry 605014 (India) Author Abeywickrama, Pranami Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100 (Thailand) of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences (China) Author G, E. B. Author Jones, areth Author Chomnunti, Putarak Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100 (Thailand) Author Sarma, V. V. Biotechnology, School of Life Sciences, Pondicherry University, Kalapet, Pondicherry 605014 (India) Author Hyde, Kevin D. Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100 (Thailand) World Agroforestry Centre East and Central Asia Office, 132 Lanhei Road, Kunming 650201 (China) Laboratory for Plant Biodiversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan (China) Author Lumyong, Saisamorn Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200 (Thailand) Author C., Eric H. Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai Research New Zealand, Private Bag 92170, Auckland Mail Centre, Auckland 1142 mckenziee @ landcareresearch. co. nz (corresponding Author Mckenzie Thailand) (New Zealand) author) text Cryptogamie, Mycologie 2020 2020-03-27 20 3 21 67 http://dx.doi.org/10.5252/cryptogamie-mycologie2020v41a3 journal article 246324 10.5252/cryptogamie-mycologie2020v41a3 62653781-1f18-4362-a843-6dd324fe64be 1776-100X 7815042 Halodiatrype mangrovei (K.D.Hyde) Dayarathne & K.D.Hyde ( Fig. 16 ) Mycosphere 7 (5): 612-627 (2016) . Cryptosphaeria mangrovei K.D.Hyde, Transactions of the Mycological Society of Japan 34 (3): 311 (1993) . MYCOBANK. — MB 551350. FACESOFFUNGI NUMBER. — FoF 04598. MATERIAL EXAMINED. — Thailand , in intertidal mangrove on dead roots of Rhizophora apiculata , K.D.Hyde (holo-, BRIP[BRIP-19869]). DISTRIBUTION. — Thailand. FIG. 15. — B , C , F , H , I , K , M -P , R , S , Halodiatrype salinicola Dayarathne & K.D.Hyde (MFLU 15-0179 – holotype ); A , D , E , G , J , L , O , P , T , U , Halodiatrype avicenniae Dayarathne & K.D.Hyde (MFLU 16-1185 – holotype and MFLU – 16-1197): A , B , horizontal section of ascoma (MFLU 16-1185,MFLU 15-0179); C , D , vertical section through ascoma (MFLU 15-0179, MFLU 16-1185); E , F , peridium (MFLU 16-1185, MFLU 15-0179); G , H , section through neck (MFLU 16-1185, MFLU 15-0179); I , J , asci (MFLU 15-0179 (in Congo red), MFLU 16-1185); K , L , paraphyses (MFLU 15-0179,MFLU 16-1185);M-P,ascospores (MFLU 15-0179,MFLU 16-1185); Q , conidia from culture on PDA (MFLU 18-0150);R-U,culture on PDA (MFLU 15-0179,MFLU 16-1185) Scale bars:A,1000 µm;B, 500 µm;C,D,I-L,100 μm;E, F,Q,20 μm;G-H,50 μm; M-P,10 μm . DESCRIPTION Sexual morph Ascomata. 520-990 × 740-880 µm, dark brown to black, solitary to gregarious, immersed in the darken pseudostroma, globose to subglobose, uni-loculate, papillate, ostiolate. Ostioles. Central, ostiolar canal filled with periphyses. Peridium. 90-135 µm wide, composed of several layers of dark brown to black cells of textura angularis, outer cell layer fusing with the host cells. Paraphyses. 1.5-3 µm wide, arising from base of perithecia, long, narrow, unbranched, septate, guttulate, narrowing and tapering towards the apex. Asci. 70-90 × 10-12 µm (ẍ = 80 × 11 µm, n = 20), 8-spored, bior triseriate, clavate, unitunicate, extremely thin-walled with an indistinct apical thickening, somewhat slightly truncate, without any apical apparatus, apical oil globules in immature asci, J-. Ascospores. 10-15.8 × 3-5 µm (ẍ = 14.5 × 4 µm, n = 20), allantoid or subinequilateral, 0-1 septate, hyaline when immature, yellowish to yellowish brown at maturity, side walls thickened, guttulate, without appendages. Asexual morph Undetermined. NOTES Cryptosphaeria mangrovei , which was reported from dead roots of Rhizophora apiculata in intertidal mangroves in Thailand ( Hyde 1993 ) is characterized by clavate, extremely thin-walled, slightly truncate asci, with an indistinct apical thickening, lacking an apical ring, and with allantoid or subinequilateral, one-celled guttulate ascospores. This species is similar to species of Halodiatrype in having allantoid or subinequilateral, light brown ascospores and was collected from intertidal mangrove on dead roots of Rhizophora apiculata (Rhizophoraceae) . Therefore, we make the new combination of Halodiatrype mangrovei .