Fungalpedia – Note 1917, Obryzaceae
Obryzaceae. Körb.
Citation when using this data: Hyde KD et al. 2020 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Incertae sedis, Incertae sedis, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Mainly lichenicolous with green algae on rocks or bark and seldom on mosses. Sexual morph: Ascomata perithecial, pyriform, astromatic, immersed. Ostiole periphysate. Peridium hyaline with ostiolar region appearing light brown at times. Asci 4-8-spored, unitunicate, clavate, closely ellipsoid to ovoid, short-pedicellate, with barely visible apical ring, deliquescent at the base. Ascospores overlapping 1–2-seriate, hyaline, aseptate, smooth-walled, fusiform to limoniform or ellipsoid, lacking any mucilaginous sheath or appendages. Asexual morph: Undetermined (adapted from Cannon & Kirk 2007, Maharachchikumbura et al. 2016b).
Notes – Obryzaceae is an insufficiently studied family which has been closely associated with plant pathogenic taxa in Gnomoniaceae, although it was mainly mentioned in lichenological studies (McNeill et al. 2006). Gnomoniaceae was subsequently recommended for conservation by Hawksworth & Eriksson (1988) with rejection of Obryzaceae and this suggestion was acknowledged by McNeill et al. (2006). However, members in Gnomoniaceae can be distinguished as the latter have ascomata with minimally developed stroma and most often, the ascospores are small, typically less than 25 μm and aseptate or one-septate either at the median or excentric position (Sogonov et al. 2008). Furthermore, the host substrates for Gnomoniaceae range from leaves, twigs and stems from herbaceous plants to bark or wood (Sogonov et al. 2008). Lumbsch & Huhndorf (2010) listed Obryzaceae in Sordariomycetes, families incertae sedis, which was followed by Maharachchikumbura et al. (2015). Later, it was excluded from Sordariomycetes, families incertae sedis (Maharachchikumbura et al. 2016b). Furthermore, based on the ICN Article 36.1, the name Obryzaceae is invalid since Körber (1855) established this family name “ad int.”. Its validation should be attributed to Eriksson 1981.
Type genus: Obryzum Wallr.
References
Cannon PF, Kirk PM. 2007 – Fungal families of the world. CABI Bioscience, Wallingford 1–456.
Eriksson OE. 1981 – The families of bitunicate ascomycetes. Nordic Journal of Botany 1, 800–800.
Entry by
Kevin David Hyde, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, P.R. China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P.R. China, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, World Agroforestry Centre, East and Central Asia, Kunming 650201, Yunnan, P.R. China
Published online 28 February 2020