Didymocyrtis epiphyscia s.l.  

A probable species aggregate featured by Ertz et al. (2015), with slightly narrower conidia than D. epiphyscia s. str. They measure (4.5-) 5-6 x 2.5-3 µm, while those of D. epiphyscia s. str. are mostly 3.5-4.2 µm broad. D. slaptoniensis (on Xanthoria parietina) is described as having conidia that are mostly 6-8 x 2.5-3.5 µm in size. More detailed research is needed.