Mycosphaerellales » Mycosphaerellaceae » Septocylindrium

Septocylindrium bonordenii

Septocylindrium bonordenii Sacc., in Saccardo, Michelia 1: 89 (1877).

           Index Fungorum number: IF 216102; Facesoffungi number: FoF 11303, Fig. 1

Description: see Braun (1998); Videira et al. (2017).

Material examined: see Braun (1998); Videira et al. (2017).

Fig. 1 Conidiophores and conidia of Septocylindrium bonordenii (HAL, re-drawn from Fig. 270 as R. septata in Braun 1998). Scale bar = 10 μm.

Importance and distribution

Septocylindrium species are associated with leaf spot. There are 35 Septocylindrium epithets in Index Fungorum (2022), but several species have been transferred to other genera such as Cercosporella, Cladophialophora, Ilyonectria, Lylea, Monodidymaria, Passalora, Pseudocercospora, Pseudocercosporella, Ramularia, Rhynchosporium, Sporidesmium, Sporophagomyces and Thedgonia. Septocylindrium is reported from a wide range of hosts such as Bidens sp. (Asteraceae), Cerasus vulgaris (Rosaceae), Dryopteris carthusiana (Dryopteridaceae), Galanthus nivalis (Amaryllidaceae), Gossypium sp. (Malvaceae), Malus domestica (Rosaceae), Nicotiana tabacum (Solanaceae), Pyrus communis (Rosaceae), Sida acuta (Malvaceae) and Vitis (Vitaceae). Septocylindrium is reported from several countries including Asia (China, Japan, Russia), Europe (Bulgaria, Germany, Greece, Italy, Poland) and the United States (New York). An effort to re-collect and sequence species of Septocylindrium is needed.


Quarantine significance

Septocylindrium is in the list of quarantine pest for Europe (USDA, 2022).



Braun U. 1998 – A monograph of Cercosporella, Ramularia and allied genera (phytopathogenic hyphomycetes): Vol. 1. IHW-Verlag, Eching, Munich, Germany.

USDA ARS Fungal Database 2022 Available at :

Videira SIR, Groenewald JZ, Braun U, Shin HD, Crous PW. 2016 – All that glitters is not Ramularia. Studies in Mycology 83, 49–163.

Videira SIR, Groenewald JZ, Nakashima C, Braun U, Barreto RW, de Wit PJGM, Crous PW. 2017 – Mycosphaerellaceae - Chaos or clarity? Studies in Mycology 87, 257–421.


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