in 2013, two large volumes (about 80 pages a piece) on "septoria" and septoria-like fungi were published in the open access journal "studies in mycology". in these papers by quaedvlieg et al. and verkley et al., the genus "septoria" is clearly defined and identification techniques are discussed in detail. besides going into detail about the genus "septoria s. str.", many septoria-like genera are discussed and clearly illustrated.