Oxydothis phoenicis
Oxydothis phoenicis
S.N. Zhang, K.D. Hyde & J.K. Liu Mycosphere 11(1): 770 (2020)
Classification: Ascomycota-Pezizomycotina-Sordariomycetes-Xylariomycetidae-Amphisphaeriales-Oxydothidaceae-Oxydothis
Host species: Phoenix paludosa
Holotype: MFLU 18-1074
Known distribution: Thailand
IF Number: IF555516 Mycobank Number: 555516 FOF Number: FoF05092
Description
Saprobic on rachis of Phoenix paludosa. Sexual morph: Ascomata 230–600 μm diam., solitary or clustered in groups, forming under slightly raised, blackened, ellipsoidal regions on the host surface. Peridium 20–25 μm wide, composed of 2–3 layers of pale brown to hyaline cells with textura prismatica. Paraphyses seems to dissolve during maturation. Asci 142–159 μm × 14–21μm (x̅ = 148.9 × 17 μm, n = 20), 8-spored, cylindrical, mostly straight, pedicellate, unitunicate, with a wedge-shaped, amyloid, subapical apparatus, 3.5–5 μm high, 3.5–4.5μm diam. Ascospores 60–78 μm× 6–7.5 μm (x̅ = 72 × 6.7 μm, n = 30), fusiform, hyaline, obliquely 1–2-seriate, tapering gradually from a constricted central or seldom upper central septum to short, pointed processes. Asexual morph: Undetermined.
Culture conditions: colonies on MEA reach a diam. of 10mm after three weeks at 25–28˚C.
Oxydothis phoenicis (MFLU 18-1074). A Appearance of fruiting bodies on host substrate. b Section of ascomata. C Peridium. d–j Asci. j J+ reaction of apical ring in Melzer’s reagent. h–m Ascospores. N Germinating ascospores. o Appressoria. p Growing colonies on PDA. q Growing colonies on MEA. Scale Bar: a = 500 µm, b, d–g, n = 50 µm, c, h–m, o = 20 µm.
Reference
Hyde, K.D. et al. (2020) Refined families of Sordariomycetes. Mycosphere 11(1), 305–1059
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