Van Geel 1978: Ascospores:12-15 x 5-6 x 3-4 μm, one-celled, bilaterally flattened, with a germ slit along one side. Perithecia 270-310 x 195 μm. The upper surface covered with pointed hairs up to 45 x 3.5 μm (hairs absent in more decomposed peat).
Halbwachs et al 2021: Finely verrucose ascospore with pronounced longitudinal germ slit; 4.5x9.5 µm
van Geel B (1978) A palaeoecological study of Holocene peat bog sections in Germany and the Netherlands, based on the analysis of pollen, spores and macro- and microscopic remains of fungi, algae cormophytes and anymals. Rev. Palaeobot. Palynol. 25:1-120.