Van Geel 1978: Ascospores ellipsoidal, 22-30(37) x 14-20(24) μm. Spore surface almost black, evenly ornamented with ca. 1 μm wide round hyaline pits.
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.