van Geel 1978: Spores ellipsoidal, one-celled, brown, smooth-walled, 25-36 x 15-16 μm, with two protruding apical pores, about 1.5 μm wide.
van Geel et al 1983b: Spores ellipsoidal, one-celled, brown, smooth-walled, 25.0-39.8 × 15.0-16.6 µm, with two protruding 1.0-1.8 µm wide, apical pores.
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.