Cosmospora arxii (W. Gams) Gräfenhan & Schroers, in Gräfenhan, Schroers, Nirenberg & Seifert, Stud. Mycol. 68: 95 (2011)

on Hypoxylon fragiforme, see https://www.inaturalist.org/observations/103299983

Asci 8-spored, uniseriate (Photo 3 and 4), spores 2-celled, 6,5-8,5 x 3-4 µm.

Literature: https://fungi.myspecies.info/all-fungi/cosmospora-arxii