van Geel 1978: Spores globose, 16-21 μm in diameter, appearing reticulate but sculpture consisting of anastomosing grooves. Greatest distance between the grooves 4-7 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.