Allocucurbitaria Valenz.-Lopez et al., Stud. Mycol. 90: 51. 2017. emend. M. Mehrabi-Koushki & Eisvand.

Index Fungorum number: IF 823000; MycoBank number: MB 823000, Facesoffungi number: FoF 08182

Etymology – From Greek àλλο-, different, due to is related but phylogenetically and morphologically different to the genus Cucurbitaria.

Sexual morph on Hapalocystis bicaudata Fuckel on Ulmus glabra Huds.: Ascomata pyriform, black, immersed singly or in valsoid groups beneath periderm above ascomata of its host, upright or oblique with convergent ostiolar necks, surrounded by subiculum, forming bumps, becoming visible through bark fissures. Ostiolar necks forming stout papillae. Peridium leathery, black, pseudoparenchymatous, 3-layered. Hamathecium consisting of branched paraphyses. Asci cylindrical, with a distinct ocular chamber, a slightly elongated stipe and a simple base, containing 8 uni- to partly biseriately arranged ascospores. Ascospores fusoid to subclavate, with the upper part slightly widened, first yellow, with 3 main septa, later brown, finally with numerous transverse and longitudinal septa, surrounded by a swollen sheath around each hemisphere (Jaklitsch et al. 2018). Asexual morph on OA: Conidiomata pycnidial, brown, solitary or confluent, superficial, pycnidial wall of textura angularis, glabrous, subglobose to ovoid, ostiolate. Conidiogenous cells phialidic, hyaline, smooth-walled, ampulliform. Conidia aseptate, hyaline, smooth- and thin-walled, cylindrical to allantoid, guttulate (Valenzuela-Lopez et al. 2018).

Type species – Allocucurbitaria botulispora Valenzuela-Lopez et al.

Notes – The genus Allocucurbitaria (21 Nov. 2017, Stud. Mycol. 90: 51) is here emended to include the genus Seltsamia (21 Nov. 2017, Stud. Mycol. 90: 111) that clustered with the type species of Allocucurbitaria, A. botulispora, in the phylogenetic analyses of the present study (MLBS 100%, MPBS 96%, BPP 1.0). Features of the sexual morph of Seltsamia (Jaklitsch et al. 2018) are therefore incorporated into the emended generic circumscription of Allocucurbitaria.

Species