Van Geel 1978: Ascospores oblong, 25-43 x 10-14 μm, with 5-7 transverse and one to several longitudinal septa (especially in the more central segments).
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.