Phaeosphaeria silenes-acaulis  

Anamorph: not known.
Teleomorph: ascostromata perithecial, 50-70 (-90) µm diam. and 65-100 (-120) µm tall, pyriform with a broad conical neck 20-30 µm in diam. and 30-50 µm tall, scattered or in small clusters, not setose, immersed in dead host tissues with the neck protruding. Peridium thin (6-10 µm thick), composed of about two layers of thin-walled mid brown angular cells 8-11 µm diam. Interascal tissue poorly developed, with sparse cellular pseudoparaphyses or entirely absent. Asci few in number (usually not more than 5), 52-65 x 14-18 (-20) µm, ovoid-cylindrical, thick-walled and fissitunicate, almost sessile, the apex rounded to truncate with a rather short and broad ocular chamber, not blueing in iodine, 8-spored. Ascospores arranged biseriately, (26-) 29-32 (-38) x 5-6.5 µm, narrowly fusiform, usually slightly curved, 3-septate and slightly constricted at the ± median primary septum, pale yellowish brown, thin- and smooth-walled, with a thin gelatinous sheath.

Map of known distribution in Great Britain and Ireland.