Van Geel 1978: Ascospores ellipsoidal to ovoid, 25-33x15-19 μm. Spore surface dark brown, ornamented with 2-4 μm wide, 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.