Description contributed by Graham Kinsey (CABI), based on Barr (1992).
Anamorph: not known.
Teleomorph: ascostromata 130-250 µm diam, uniloculate, perithecial, ± globose, sometimes with a slightly immersed base, upright, shortly papillate, the upper two-thirds covered with short septate dark brown setae 20-55 x 5.5-6.5 µm, initially subepidermal but later exposed by weathering of the substrate and appearing superficial. Subiculum composed of sparse red-brown hyphae 5-6 µm diam. Peridium 12-16 µm thick. Interascal tissue of cellular pseudoparaphyses 1-2 µm diam, hyaline, filiform, septate, branched and anastomosed, at least initially continuous from top to bottom of the cavity. Asci 60-80 x 13-16.5 µm, cylindric-clavate, apex rounded, base tapering to a lobed and often foot-shaped base, thick-walled, sometimes with an internal apical beak, fissitunicate, 8-spored, J-, arising in parallel from the lower half of the cavity. Ascospores 17.5-24 x 7.5-9 µm, ellipsoidal, straight to inequilateral or slightly curved, 3-septate, becoming yellowish-brown, constricted at the primary septum, lacking a gelatinous sheath.
On dead inflorescences (catkins) of Myrica gale.
Very rare. SW Ireland (West Cork).