Van Geel 1978: Ascospores 18-25 x 5-7 μm, inequilateral (one side almost straight), tapering apically into a sharp point, basal end truncate. Germ slit extending over about half of the length of the spore along the straight side.
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.