J. Zhou et Kohlm., Mycologia 102(2): 432 (2010)
Sexual morph: Stroma black and thick that covers the surface of the wood, 0.8 – 3 mm thick of black fungal tissues, indeterminate in size and covering the whole surface of the wood sample. Ascomata 2.5 – 3.7 mm in height, 2.8 – 5.4 mm in width, deeply immersed under flattened stroma, subglobose to ovate, slightly flattened. Ascospores usually oozing out of the ostiole of the ascomata and forming black masses on the surface of the wood. Neck 0.8 – 1.5 mm long, 0.8 – 1.2 mm wide. Ostiolar canal 0.2 – 0.7 mm wide, cylindrical, filled with periphyses. Peridium 80 – 115 μ m thick, dark-brown to black in colour, consisting of two layers; outer layer 60 – 95 μ m thick, with thick-walled polygonal cells forming textura angularis, brown to dark-brown in colour and mixed with the host cells and inner layer 18 – 30 μ m thick, consisting of flattened, thin-walled cells that are faint reddish-brown in colour. Hamathecium 1 μ m thick, non-septate, embedded in gel, numerous, anastomosing above asci. Asci 160 – 200 × 7 – 9 μ m (172.5 × 7.4 μ m, n = 20), cylindrical, uniseriate, unitunicate with long basal nonsporing part, with apical ring and amyloid plug. Ascospores 11 – 15 × 4 – 7 μ m (12.9 × 5.7 μ m, n = 50), ellipsoidal, dark-brown, unicellular, with longitudinal germ slit, smooth. Asexual stage: Colonies of the fungal isolates derived from single spores are white in colour when young and synnemata-like structures developed when aged with yellow-orange to dark-brown exudates distributed irregularly on mycelia and in the culture media. Conidia 12 – 25 × 1 – 3 μ m, hyaline, unicellular, cylindrical, or clavate in shape, holoblastic, produced singly on conidiogenous cells, and seldom produced on corn meal and PDA seawater agar media after up to 3 months incubation. (Description based on Abdel-Wahab et al. (2014)).
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