Australian leaf-inhabiting fungi. XXVIII. Hendersonia on Eucalyptus

Of the seven species of Hendersonia described from Eucalyptus, five are considered in detail. H. eucalypti is shown to be the same as Seimatosporium lichenicola and H. grandispora is identical with the species commonly called Phaeoseptoria eucalypti. H. fraserae is the same as the earlier-described H. eucalypticola. The new genus Sonderhenia is proposed for the two leaf parasites H. eucalyptorum and H. eucalypticola and is characterized by brown distoseptate conidia with finely roughened walls produced from brown annellidic conidiogenous cells borne in pycnidia. It is distinct from Phaeoseptoria and from the species commonly called P. eucalypti, whose taxonomic position will be considered elsewhere.