Paraphaeosphaeria rosicola

Paraphaeosphaeria rosicola Phukhams., Camporesi & K.D. Hyde, in Wanasinghe et al., Fungal Diversity: 10.1007/s13225-018-0395-7, [35] (2018)

Index Fungorum number: IF554133; Facesofungi number: FoF 03971

Etymology: The specific epithet reflects the host genus Rosa.

Holotype: MFLU 18-0108.

            Saprobic on dried spine of on Rosa canina. Sexual morph: Undetermined. Asexual morph: Conidiomata 89–240 high × 133–200 μm diam. (x̄ = 155 × 167 μm, n = 6), pycnidial, globose to subglobose, immersed, solitary or confluent. Ostioles apapillate, filled with hyaline cells. Pycnidial wall 11–29 μm (at apex) wide, outermost layer heavily pigmented, thick-walled, comprising reddish-brown to dark brown, flattened cells of textura angularis, inner layer composed hyaline, loosely packed, thin-walled cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 2–8 × 1–8 μm (x̄ = 4 × 4 μm, n = 30), cells lining the inner cavity, hyaline, smooth, ampulliform, phialidic with periclinal thickening or percurrent proliferation at the apex. Conidia 7–14 × 4– 9 μm (x̄ = 12 × 6 μm, n = 40), 1-septate, brown, oval to ellipsoid with narrowly rounded ends, thick-walled, roughened.

Material examined: ITALY, Forli-Cesena Province [FC], near Premilcuore, on dried aerial spines of Rosa canina L. (Rosaceae), 20 October 2014, Erio Camporesi, IT 2185 (MFLU 18-0108, holotype), ex-type living culture, MFLUCC 15-0042.

GenBank Numbers: ITS: MG828938; LSU: MG829047; SSU: MG829153.