 Author： |
Diaporthe spiculosa (Albertini et Schweinitz) Nitschke, Pyren. Germ. 256. 1867.
Basionym: Sphaeria pustulata Desm., Ann. Sci. Nat. Ser. III, 6:70. 1846.
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| Description： |
Pustules on bark of dead twigs; perithecia gregarious, embedded within bark tissue, globular or depressed at the bottom, 380 - 560 μm in diam., with long neck at the top; wall membranaceous, composed of angular to slightly flattened, dark, thick-walled cells, innermost cells being hyaline, thin-walled and strongly depressed. Necks cyclindric, 530 - 640 μm in length, collectively erumpent through bark periderm, first surrounded by scanty ectostromatic tissue and blackish rupture formed at the bark surface, then surrounding stromatic tissue being collapsed, blackened necks ultimately remain. Dorsal zone present but ventral zone absent. Asci clavate to cyclindric-clavate, furnished apical ring at the thickened tip, 36 - 54 × 6 - 10 μm in size and 46 × 8.8 μm in average, 8-spored, loosed irregularly in perithecium. Ascospores irregularly biseriate, fusoid to oblong-elliptic, 2-celled, usually not constricted at the septum, hyaline, 8 - 14 × 2 - 4 μm in size and 10.8 × 2.4 μm in average. |
Phylum：Ascomycota >> Class： Ascomycetes >> Order： Boliniales