Mycosphaerellales » Mycosphaerellaceae


Septocyta Petr., in Petrak, Ann. Mycol. 25: 330 (1927).

Index Fungorum number: IF 9879; Facesoffungi number: FoF 08657, 5 morphological species (Species Fungorum 2022), 1 species with molecular data.

Associated with leaf spot. Sexual morph: Unknown. Asexual morph: Mycelium immersed, branched, septate, hyaline to pale brown. Conidiomata eustromatic, immersed, separate, erumpent, dark brown to black, finally opening widely, unilocular, multilocular or convoluted, thick-walled; wall of pale brown, thin-walled textura angularis except in the dehiscent region which is darker brown and more thick-walled. Ostiole absent, dehiscence by breakdown of the upper wall. Conidiogenous cells are holoblastic, sympodial with 1–3 apical, scarcely protruding, unthickened denticles, indeterminate, discrete, ampulliform to lageniform, hyaline, smooth, formed from the inner cells of the locular walls. Conidia hyaline, 1–3 euseptate, smooth, straight or slightly curved, acicular, apex obtuse, base truncate, often with minute guttules associated with septa (adapted from Quaedvlieg et al. 2013).


Type species: Septocyta ramealis (Roberge ex Desm.) Petr.


Notes: Septocyta is characterised by immersed, branched, septate, hyaline to pale brown mycelium, eustromatic, immersed, separate, erumpent conidiomata, ampulliform to lageniform, hyaline, smooth conidiogenous cells, and hyaline, 1–3-euseptate, smooth, straight or slightly curved conidia. The holotype specimen of S. ramealis is lost. Quadvlieg et al. (2013) re-examined a specimen of S. ramealis (PDD 51271) which differs from the description provided by Sutton (1980) and rather represented a specimen of Septoria s. str based on the method of conidiogenesis. There is only one ITS sequence for S. ruborum available in GenBank which clusters in between Septoria s. str. (Quadvlieg et al. 2013). The placement of Septocyta in Mycosphaerellaceae is doubtful. The type material needs to be re-collected and Septocyta must be epitypified.


About Dothideomycetes

The website provides an up-to-date classification and account of all genera of the class Dothideomycetes.

Mushroom Research Foundation


Published by the Mushroom Research Foundation 
Copyright © The copyright belongs to the Mushroom Research Foundation. All Rights Reserved.