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 Pedumispora rhizophorae K.D.Hyde & E.B.G.Jones ( Fig. 17 ) Mycological Research 96 (1): 78 (1992) . Material examined. — Thailand , Ranong , on twig of Rhizophora apiculata , XI.1988 , K. D. Hyde (BRIP 19201 holotype ). DISTRIBUTION. — Micronesia , Seychelles , Thailand . DESCRIPTION Ascomata. 120-130 µm high, 420-500 µm in diameter, brown to black, subglobose, coriaceous, ostiolate, papillate, pseudos - tromatic tissues surrounding each ascoma. Necks erumpent. Paraphyses. 4-8 µm thick, filiform and simple. Asci. 200-248 × 20-37 µm, 8-spored, irregularly fusiform, pedicellate, unitunicate, thin-walled, without an apical ring. Ascospores. 153-210 ×4-5.5 µm, filiform, tapering towards both ends, the end cells lack cytoplasmic contents and appear curved or hook-shaped at one end, 12-13-septate, not constricted at the septa, with longitudinal striations running the length of the ascospore, slightly brown. NOTES Pedumispora rhizophorae is seldom reported from tropical mangrove habitats ( Jones et al. 2009 , 2013 ). It was originally collected from decayed intertidal prop roots and twigs of Rhizophora apiculata at Ranong Province , southern Thailand ( Hyde & Jones 1992 ). Later collections were made on R. mucronata from Seychelles ( Hyde & Jones 1992 ) and mangrove wood from Guam , ( Sakayaroj et al. 2005 ). Hyde & Jones (1992) included Pedumispora rhizophorae in Melanconidaceae , Diaporthales , as it has similar characters to Prosthecium and Winterella . A preliminary phylogenetic study, based on LSU sequence data of the strain obtained from Guam , revealed that Pedumispora rhizophorae has an affinity with the Xylariales , and in particular with the Diatrypaceae ( Sakayaroj et al. 2005 ; Jones et al. 2009 ). Klaysuban et al. (2014) re-examined the morphology of this fungus and and confirmed its taxonomic position within Diatrypaceae through a molecular phylogenetic study with LSU and ITS sequences.