Brevicollum hyalosporum
Brevicollum hyalosporum Kaz. Tanaka & Toy. Sato, in Tanaka, Hashimoto, Matsumura & Sato, Mycologia 109(4): 611 (2017).
Index Fungorum number: IF 821756; Facesoffungi number: FoF 06620, Fig. 1
Description:
Saprobic on Morinda citrifolia twig. Sexual morph: Ascomata 150–230 × 290–380 µm (x̅ = 195 × 322, n = 10), perithecial, scattered, immersed in bark, erumpent with ostiolar neck, globose to depressed globose, eccentric periphyses neck 150–170 × 95–115 µm, compressed at basal to broad apical region. Peridium 38–90 µm wide, comprising cells of textura angularis. Hamathecium comprising 1.8–2 µm wide, septate, branched, anastomosing, pseudo paraphyses. Asci 110–165 × 22–35 (x̅ = 140 × 28, n = 25) bitunicate, clavate, apically broadly rounded, basally narrow, short pedicellate. Ascospores 32–50 × 10.3–13.5 (x̅ = 38 × 11.4, n = 28), 2-seriate except at the base, fusoid, hyaline to pale grey colored, uniseptate, constricted at the septum, mature spores becoming 3–5-septate with central constricted septa, guttulate, thick sheath, 2 µm wide, surrounded ascospores. Asexual morph: Unknown.
Material examined: India, Andaman and Nicobar Islands, Port Blair, NIOT Coco plantation, on Morinda citrifolia (Rubiaceae) (11˚38’38.7” N 92˚42’18.3” E) 9 December, 2017, identified by Niranjan M. (NFCC culture number: 4376).
Fig. 1 Brevicollum hyalosporum (NFCC-4376). a Appearance of ascomata on host substrate. b Section through ascoma c Neck. d Pseudoparaphyses. e Asci. f–h Ascospores. i, j Culture on MEA media. Scale bars: b = 200 μm, c, e = 50 μm, d = 20 μm, f–h = 10 μm.
Importance and distribution
Brevicollum comprises two species. Brevicollum hyalosporum was found on branches of Hevea brasiliensis (Euphorbiaceae) (Hyde et al. 2018) and on dead twigs of Syzygium samarangense (Myrtaceae) in Asia (Japan and Thailand) respectively (Tanaka et al. 2017). Hongsanan et al. (2020a) provided a new record on Morinda citrifolia (Rubiaceae) in Asia (India). Brevicollum versicolor is recorded on Volkameria inermis (Lamiaceae) in Asia (Japan).
References
Aptroot A. 1998 – A world revision of Massarina (Ascomycota). Nova Hedwigia 66, 89–162.
Hongsanan S, Hyde KD, Phookamsak R, Wanasinghe DN et al. 2020a – Refined families of Dothideomycetes: Dothideomycetidae and Pleosporomycetidae. Mycosphere 11,1553–2107.
Hyde KD, Aptroot A. 1997 – Fungi from palms. XXXIII. The genus Massarina, with a new species. Nova Hedwigia 64, 491–504.
Hyde KD, Chaiwan N, Norphanphoun C, Boonmee S et al. 2018 – Mycosphere notes 169–224. Mycosphere 9, 71–430.
Tanaka K, Hashimoto A, Matsumura M, Sato T. 2017 – Brevicollum, a new genus in Neohendersoniaceae, Pleosporales. Mycologia 109, 1–12.
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