 Initially, Luttrell (1953) was unsure whether the Hysteriaceae justified ordinal status, stating that the elongated hysteriaceous locule alone may not appear to be sufficient for the recognition of a separate order and the dothideaceous nature of the centrum at the earliest stages was not observed in his study.Nevertheless, Luttrell (1955) did finally retain the Hysteriales as a separate order and noted that this order may have phylogenetic relationships basal to the Pleosporales.Hans Zogg (1962) acknowledged the heterogeneity of the classical Hysteriales and, following Duby (1862), divided hysteriaceous fungi into two families, namely the Hysteriaceae "s. str".