Parafenestella salicis  

Anamorph: a presumed asexual morph forming pycnidia with minute cylindrical to allantoid, 1-celled, hyaline conidia is often associated with the ascomata.
Teleomorph: ascomata 300-450 μm diam., globose, subglobose to pyriform or subconical, black, immersed below the epidermis on inner bark or in the ostiolar region of Valsaceae species, scattered or tightly or loosely aggregated, partly erumpent through bark fissures, surrounded laterally and basally and connected by subhyaline to medium brown, thick-walled subicular hyphae. Ostiolar areas usually indistinct, sometimes papillate, rounded or apically flattened or compressed and furrowed, black. Interascal tissue of numerous branched pseudoparaphyses 1–3.5 μm diam. Asci 145–200 × 14.5–17.5 μm, cylindrical, short-stalked, fissitunicate, with a distinct ocular chamber, 4- to 8-spored. Ascospores obliquely uniseriatey arranged, 21.5-27.5 x 9.7-11.8 µm, ellipsoidal to fusiform-ellipsoidal or occasionally ovoid, distinctly constricted at the ± median primary septum, often also at other septa, sometimes inequilateral, dark brown when mature, with (5–) 7–10 (–11) transverse and (1–) 2–3 longitudinal septa, the former often with oblique superposition in section, the latter often forming parallel lines; ends broadly rounded and concolorous, smooth, without a gelatinous sheath or appendages.

Description partly adapted from Jaklitsch & Voglmayr (2019).