. Melanomma Nitschke ex Fuckel, Jb. nassau. Ver. Naturk. 23–24: 159 (1870). (Melanommataceae) Generic description Habitat terrestrial, saprobic. Ascomata immersed, erumpent to nearly

superficial, medium- to large-sized, globose to subglobose, coriaceous, gregarious, short papillate. Peridium pseudoparenchymatous cells outside with pale compressed cells inside. Asci cylindric to clavate with short pedicels. Hamathecium of dense, filamentous, branching, rarely find more anastomosing, septate pseudoparaphyses. Ascospores pale brown, reddish brown to olive-brown, ellipsoid to fusoid, 2 to multi-septate, constricted at the main septum. Anamorphs reported for genus: Aposphaeria, Nigrolentilocus, Phoma-like and Pseudospiropes (Chesters 1938; Sivanesan 1984). Literature: Barr 1990a; Chesters 1938; Fuckel 1870; Saccardo 1878; Zhang et al. 2008a. Type species Melanomma pulvis-pyrius (Pers.) Fuckel, Jb. nassau. Ver. Naturk. 23–24: 160 (1870). (Fig. 58) Fig. 58 Melanomma pulvis-pyrius (a–b, d–e, h–j from UPS, holotype;

c, g, k, l from epitype). a Ascomata Z-VAD-FMK cell line gregarious on the host surface. b Vertical section of an ascoma. c–f Asci with pedicels. g Dehiscent ascus. h–l Ascospores. Scale bars: a = 0.5 mm, b = 200 μm, c–l = 10 μm ≡ Sphaeria pulvis-pyrius Pers., Syn. meth. fung. (Göttingen) 1: 86 (1801). Ascomata 215–471 μm high × 260–440 μm diam., gregarious, APR-246 in vivo substrate surface covered with a thin layer of brown psueodstroma, superficial, globose, subglobose, oxyclozanide broadly or narrowly conical, often laterally flattened, black, roughened and irregular, often bearing remnants of wood fibers; apex short papillate, often somewhat puckered or sulcate (Fig. 58a). Peridium 70–90 μm wide, to 180 μm

wide at the base, coriaceous, comprising two types of cells, outer cells small heavily pigmented thick-walled cells of textura angularis, apical cells smaller and walls thicker, individual cell walls to 6 μm thick, inner cells lightly pigmented to hyaline thin-walled cells of textura angularis, 5–8 μm diam., individual cell wall to 1.5–2 μm thick, in places with columns of textura prismatica, and larger, paler cells of textura prismatica towards the interior and at the base (Fig. 58b). Hamathecium of dense, filamentous, 1–2(−2.5) μm broad, branching, rarely anastomosing, septate pseudoparaphyses. Asci 98–123 × 6.5–7.5(−9) μm (\( \barx = 109 \times 7.5\mu m \), n = 10), 8-spored, bitunicate, fissitunicate, cylindrical to fusoid, with a short, furcate pedicel, to 25 μm long, with an ocular chamber (Fig. 58c, d, e, f and g). Ascospores 14–17.5(−19) × 4.5–6.5 μm (\( \barx = 15.8 \times 5.2\mu m \), n = 10), obliquely uniseriate and partially overlapping, broadly fusoid to fusoid with broadly rounded ends, straight or slightly curved, smooth, olive-brown, 4-celled, slightly constricted at the septa, the second cell from the top slightly wider than the others, no sheath (Fig. 58h, i, j, k and l).