Pleosporales » Macrodiplodiopsidaceae » Macrodiplodiopsis

Macrodiplodiopsis desmazieri

Macrodiplodiopsis desmazieri (Mont.) Petr., Annls mycol. 20(5/6): 343 (1922).

Hendersonia desmazieri Mont., Annls Sci. Nat., Bot., sér. 3 12: 310 (1849).

            Index Fungorum number: IF 263056; Facesoffungi number: FoFxxx, Fig. 1

Description: see Wijayawardene et al. (2014a); Crous et al. (2015).

Saprobic on dead branches of Platanus. Sexual morph: unknown. Asexual morph: Conidiomata 950–1000 μm diam. × 650–975 μm high ( x = 952.1 × 655.2 μm, n = 10), separate or gregarious, immersed, globose, papillate, dark brown to black, unilocular, thick-walled, with wall cells textura porrecta except at the base, where they are textura angularis. Ostiole central, single, circular, papillate. Conidiophores absent. Conidiogenous cells 13−25 × 3−5 µm, obclavate to cylindrical, wider at the base, annellidic, discrete, indeterminate, cylindrical, hyaline, arising from the inner cells of the pycnidial wall. Conidia 45−50 × 15−20 µm (x = 45.3 × 18.2 µm, n = 20). ellipsoid to obovoid, or clavate, 3-distoseptate, with granular cytoplasm and much reduced lumina and often surrounded by dark brown wall deposits, continuous, pale brown, thick-walled, with truncate base and obtuse apex, surrounded by a thick gelatinous sheath.

Material examined: Italy, Forlì-Cesena Province: Modigliana, Montebello (Ibola Valley), on branches of Platanus acerifolia (Platanaceae), 15 April 2013, Erio Camporesi NNW-IT39 (MFLU 13-0090).