Neohortaea acidophila(Hölker, Bend, Pracht, Tetsch, Tob. Müll., M. Höfer & de Hoog) Quaedvl. & Crous, in Quaedvlieg, Binder, Groenewald, Summerell, Carnegie, Burgess & Crous, Persoonia33: 27 (2014)

Basionym – Hortaea acidophila Hölker, Bend, Pracht, Tetsch, Tob. Müll., M. Höfer & de Hoog, Antonie van Leeuwenhoek 86: 293. 2004.

Specimen examined – Germany, Bergheim, from lignite, May 2001, U. Hölker, culture ex-type CBS 113389.

Note – After 2 months of storage at room temperature (20 °C), up to 50 fungal colonies forming distinct mycelial pellets with diameters of about 5 mm were observed in the enrichment culture containing humic and fulvic acids. The colonies settled at the surface of the suspension as well as at the surface of the humic acid sediment. The pH of the suspension increased from 0.5 to 0.6 during incubation. Microscopic analysis showed predominantly single cells with a length of
5-10 μm, which in part germinated, forming hyphae (Figure 1). On identification media (OA, PDA; De Hoog et al. 2000) the fungus was found to have annellidic conidiogenesis.

Figure 1 – Neohortaea acidophila, CBS 113389. Hyphae with annellated zones, and conidia. Bar represents 10 μm