Melanomma pulvis-pyrius
Melanomma pulvis-pyrius (Pers.) Fuckel, Jb. nassau. Ver. Naturk. 23-24: 160 (1870) [1869-70].
≡ Sphaeria pulvis-pyrius Pers., Syn. meth. fung. (Göttingen) 1: 86 (1801).
Index Fungorum number: IF 182890; Facesoffungi number: FoF 00775, Fig. 1
Description: see Tian et al. (2015).
Material examined: see Tian et al. (2015).
Fig. 1. Melanomma pulvis-pyrius (IFRD 2001, epitype). a Appearance of ascomata on the host surface. b Section through ascomata. c Peridium. d Filamentous, branching, septate pseudoparaphyses. e–g Asci with ascospores. h–k Ascospores. Scale bars: a = 500 μm, b = 100 μm, c = 20 μm, d–k = 10 μm.
Melanomma subdispersum (P. Karst.) Berl. & Voglino, in Saccardo, Syll. fung., Addit. I-IV (Abellini): 148 (1886).
≡ Sphaeria subdispersa P. Karst., Hedwigia 23(4): 57 (1884).
Index Fungorum number: IF 162065; Facesoffungi number: FoF 00775, Fig. 2
Description:
Saprobic or hemibiotrophic on host. Sexual morph: Ascomata 200–215 μm diam., 160–170 μm high, immersed, or semi-immersed, clustered or scattered, globose, ovoid, obovoid or obpyriform, brown to dark brown or black, membranous, surrounded by dark-brown setae. Peridium 45–60 μm, thick-walled composed of 4–5 layers of brown to dark brown pseudoparanchymatous cells, forming a textura globulosa, less dark towards the centre, Hamathecium 0.5–1.3 μm, comprising numerous, anastomosing, trabeculate pseudoparaphyses, embedded in gelatinous matrix. Asci 90−100 × 11−12 µm (xÌ„ = 97.3 × 11.7 µm, n = 10), bitunicate, fissitunicate, cylindrical to cylindric-clavate, with a long pedicel, apically rounded, with an indistinct ocular chamber. Ascospores 20−25 × 5.9−7 µm (xÌ„ = 22.9 × 6.5 µm, n = 10), uni-seriate, partially overlapping, narrowly fusoid with sharp to narrowly rounded edges, olivaceous brown to medium brown, 3-septate, constricted at median septum with a smooth spore wall and without a sheath. Asexual morph: Unknown.
Material examined: England, Dunford house, Midhurst, Sussex, on bark of Betula (Betulaceae), 23 May 1959, M.B Ellis (UME 27027).