Seltsamia
Seltsamia Jaklitsch & Voglmayr, in Jaklitsch et al., Stud. Mycol. 90: 111 (2017).
Index Fungorum number: IF 823020; Facesoffungi number: FoF 08189, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Saprobic on host. Sexual morph: 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 swelling sheath around each hemisphere. Asexual morph: Unknown (adapted from Jaklitsch et al. 2017).
Type species: Seltsamia ulmi Jaklitsch & Voglmayr
Notes: Seltsamia is characterised by pyriform, black ascomata, leathery, black, pseudoparenchymatous peridium, cylindrical asci and fusoid to subclavate ascospores. Jaklitsch and Voglmayr (2017) accommodated Seltsamia in the Cucurbitariaceae. Seltsamia resembles Pleomassaria in having a swelling ascospore sheath. Seltsamia also resembles Fenestella in having grouped pyriform, black ascomata but can be differentiated based on DNA sequence data. Seltsamia is a distinct and well-defined genus in Cucurbitariaceae but more taxa are needed to clarify the status of the genus within the family. Molecular markers available for Seltsamia are ITS, RPB2, BTUB and TEF-1.
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