A conceptual framework for nomenclatural stability and validity of medically important fungiResponse to Pitt & Taylor 2016: Conservation of Aspergillus with A. niger as the conserved type is unnecessary and potentially disruptiveConsiderations and consequences of allowing DNA sequence data as types of fungal taxaPolyphasic data support the splitting of Aspergillus candidus into two species; proposal of Aspergillus dobrogensis sp nov.Bradymyces gen. nov (Chaetothyriales, Trichomeriaceae)Aspergillus europaeus sp nov., a widely distributed soil-borne species related to A-wentii (section Cremei)