Rebentischia unicaudata  

Anamorph: not known.
Teleomorph: Ascostromata perithecia, (100-)220-330 (-440) µm diam., ± globose, depressed or ovoid, often remaining partially or almost completely immersed, the ostiolar region black under low magnification. Peridium 20-30 µm thick, soft, composed of several layers of thin-walled angular cells, the surface roughened by protruding cells and sometimes with smooth vinaceous brown pigment encrusted on the outer surface. Interascal tissue composed of thin-walled pseudoparaphyses 1.5-2 µm diam., sometimes breaking down at maturity. Asci 60-85 (-100) x (10-) 12-15 (-18) µm , short-stalked, clavate, thick-walled and fissitunicate, the apex rounded, with an inconspicuous ocular chamber, not blueing in iodine, 8-spored. Ascospores 21-27 (-30) x 6-7.5 (-8.5) µm, the main body obovoid, 4- (rarely 5-) septate, with a hyaline basal cell and cylindrical to filiform cellular appendage 8-15 µm long and ca 1.5 µm diam., the middle cells olivaceous, the apical cell usually paler and the basal cell hyaline, multiguttulate, smooth, without a gelatinous sheath.