Fenestellaceae M.E. Barr, Mycologia 71(5): 952 (1979),
MycoBank: MB 81670
Saprobic or hemibiotrophic on woody plants. Sexual state: Fruiting bodies comprising immersed or semi-immersed
ascomata in valsoid groups, in medium to large sized pseudostromata, which form beneath the host periderm, cells
between ascomata of compressed hyphae and host cells, immersed, globose, ovoid, obovoid or obpyriform, brown to
dark brown or black, membranous, minutely papillate, or with rounded plane apex. Peridium thin-walled, composed of a few layers of brown to dark brown or reddish brown, small pseudoparanchymatous cells, forming a textura angularis . Hamathecium comprising numerous, anastomosing, trabeculate pseudoparaphyses, embedded in gelatinous matrix. Asci bitunicate, fissitunicate, cylindrical to cylindric-clavate, with a long pedicel, apically rounded, with a wide, indistinct ocular chamber. Ascospores uni-seriate, muriform, ellipsoidal, broadly fusiform, fusoid or nearly oblong, with obtuse or acute ends, pale yellowish, brown to dark brown, or reddish brown, almost hyaline at the extreme ends, usually constricted at the central septum, smooth-walled or verrucose. Asexual state: see notes under genus.
Type : Fenestella Tul. & C. Tul., Select. fung. carpol. (Paris) 2: 207 (1863), MycoBank: MB 1983