Astrosphaeriella stellata  

Anamorph: not known.
Teleomorph: ascostromata perithecial, scattered, erumpent through the host tissue to become superficial, 750-1200 µm diam., 350-500 µm high, conical, the base flattened, the apex rarely papillate, sometimes with ruptured reflexed tooth-like host remnants around the base. Peridium at sides carbonaceous, composed of strongly melanized cells, poorly developed at the base, cells of the upper wall palisade-like. Interascal tissue of trabeculate pseudoparaphyses embedded in a gelatinous matrix, frequently branched and anastomosing, 1-1.5 µm diam. Asci 170-240 × 11-13 µm, cylindrical, initially long-stalked and very thin-walled, when mature almost sessile to short-stalked, the apex obtuse, without a clear ocular chamber and possibly evanescent, (4- to 7-) to 8-spored. Ascospores partially biseriately arranged, 37-43 (-46) × 3.5-4.5 µm diam. when hyaline, 5.5-7 µm diam. when mature, narrowly fusiform, the ends acute to acuminate, eventually pale brown, smooth, eventually strongly constricted at the median or slightly supra-median septum, surrounded by a gelatinous sheath that is especially conspicuous when the ascospores are young.