Bertia gigantospora  

Anamorph: not known.
Teleomorph: ascomata perithecia, but opening by degradation of a gelatinized structure ("Quellkörper") in the apical region; 380-500 µm diam. and 300-400 µm tall, turbinate, collapsing apically but due to the extreme roughness of the wall not becoming definitely cupulate, strongly rugose with large, irregular warts, black, glabrous, scattered to gregarious. Peridium leathery to carbonaceous, the cells with numerous Munk pores. Interascal tissue absent, but short periphysis-like structures surrounding the ostiole.  Asci clavate, thin-walled, apical structures not differentiated, tapering to a slender stalk, the spore-containing part 85-110 x 32-40 µm, 8-spored. Ascospores (29.5-) 32-36.5 x 9.5-11.5 (-12) µm, cylindrical with rounded ends, hardly constricted at the ± median septum, hyaline, thin-walled, smooth, without a gelatinous sheath or appendages.

GB material has somewhat smaller ascospores compared with those from the type (on bark of an unknown tree, Florida). It may represent a separate species.