Sporocadus sorbi

Sporocadus sorbi (Wijayaw., Camporesi & K.D. Hyde) F. Liu, L. Cai & Crous, in Liu, Bonthond, Groenewald, Cai & Crous, Stud. Mycol. 92: 404 (2018) [2019]

Basionym: Seimatosporium sorbi Wijayaw., Camporesi & K.D. Hyde, in Ariyawansa et al., Fungal Diversity: 10.1007/s13225-015-0346-5, [128] (2015)

Index Fungorum number: IF 828421; Facesofungi number: FoF 00669

Etymology: Name after the host genus on which the taxon occurs.

Holotype: MFLU 15-0744 (Ariyawansa et al. 2015).

Saprobic on dead branches and stems of Sorbus torminalis L. Sexual morph: Undetermined. Asexual morph: Conidiomata 280–340 μm diam., 180–220 μm high, acervular, unilocular, subglobose, superficial, solitary, dark brown to black, apapillate ostiolate, dehiscent irregular. Conidiomata wall multi-layered, outer 20–30 μm wide, composed of brown, thin-walled cells of textura angularis, inner wall thin, hyaline. Conidiophores 8–20×1.5 −3 μm, long, cylindrical, branched, hyaline to sub-hyaline, smooth-walled. Conidiogenous cells holoblastic, annellidic, cylindrical, simple, integrated, determinate, hyaline. Conidia 13–16.5 × 5.5 − 7.5 μm (x̄ = 14.95 × 6.47 μm, n = 20), clavate or obovoid, occasionally truncate base, straight, with 3-septate, septa brown to dark brown, slightly constricted at the septa,

eguttulate, pale brown, with hyaline to sub-hyaline basal cell, smooth-walled, lacking appendages.

Culture characteristics: On PDA slow growing, white to light brown from above, pale brown from below, with sparse mycelium, flat, margin uneven, attaining a diam. of 2 cm in 7 days at 18 °C.

Material examined: ITALY, Province of Forlì-Cesena [FC], Fiumicello–Premilcuore, on dead leaf of Sorbus torminalis (Rosaceae), 8 May 2013, Erio Camporesi, IT 1233 (MFLU 15-0744, holotype); Ibid. (HKAS 88745, paratype), living cultures MFLUCC 14-0469, GUCC 65.

GenBank Numbers: LSU: KT281911, ITS: KT284774.

Notes: Ariyawansa et al. (2015) introduced Seimatosporium sorbi to Sporocadaceae. Liu et al. (2019) synonymized the taxa as Seimatosporium sorbi (Lui et al. 2019) in the same family.