Mycosphaerellales » Mycosphaerellaceae » Septoria

Septoria cytisi

Septoria cytisi Desm., Annls Sci. Nat., Bot., sér. 3 8: 24 (1847).

Index Fungorum number: IF 241056; Facesoffungi number: FoF 11218, Fig. 1

Description: see Quaedvlieg et al. (2013).

            Material examined:  see Quaedvlieg et al. (2013).



Fig. 1 Septoria cytisi (BPI USO 378994, redrawn from Quaedvlieg et al. 2013). a Leaf spot. b Conidia c Conidiogenous cells. Scale bars = 10 µm.

Importance and distribution

Species of Septoria are pathogenic and cause leaf spots on wide range of hosts (Crous et al. 2013). There are 913 Septoria epithets in Index Fungorum (2022), but many has been transferred to other genera such as Sphaerulina, Asteromella, Phloeospora, Asteroma, Asteroma, Cercospora, Cylindrosporium, Diplodina, Lecanosticta, Mycosphaerella, Ophiodothella, Phaeoramularia, Phaeoseptoria, Phaeoseptoria, Phloeospora, Phlyctema, Phomopsis, Plectosphaerella, Polystigma, Pseudocercospora, Rhabdospora, Stagonospora and Synchytrium. Septoria comprises more than 500 species and is distributed on a wide range of hosts in Asteraceae, Caprifoliaceae, Fabaceae, Rosaceae, Sapindaceae etc. Septoria is reported worldwide. Septoria taxonomy was largely dependent on associated host data, due to limited morphological characters. This has resulted in many species being described based on host plants. Septoria needs revision as it is a complex genus.


Industrial relevance and applications

Septoria cirsii is a potential biocontrol agent of Canada thistle and its phytotoxin ß-nitropropionic acid (Hershenhorn et al. 1993). Septoria hodgesii is a biocontrol agent for Myrica faya in Unites States (Hawai‘i) (Gardner 1999). Septoria passiflorae is a biocontrol agent for Passiflora tarminiana in the The United States (Hawai‘i) (Smith 2002).



Crous PW, Braun U, Hunter GC, Wingfield MJ, Verkley GJ et al. 2013 – Phylogenetic lineages in Pseudocercospora. Studies in Mycology 75, 37–114.

Desmazières JBHJ. 1847 Quatorzième notice sur les plantes cryptogames récemment découvertes en France. Annales des Sciences Naturelles Botanique 3, 8, 9–37.

Feau N, Hamelin RC, Bernier L. 2006 Attributes and congruence of three molecular data sets: Inferring phylogenies among Septoria related species from woody perennial plants. Molecular Phylogenetics and Evolution 40, 808–829.

Gardner DE. 1999 Septoria hodgesii sp. nov.: A potential biocontrol agent for Myrica faya in Hawai`i. Mycotaxon 70, 247–253.

Hershenhorn J, Vurro M, Zonno MC, Stierle A, Strobel G. 1993 Septoria cirsii, a potential biocontrol agent of Canada thistle and its phytotoxin—ß-nitropropionic acid. Plant Science 94, 227–234.

Quaedvlieg W, Kema GH, Groenewald JZ, Verkley GJ et al. 2011 Zymoseptoria gen. nov., a new genus to accommodate Septoria-like species occurring on graminicolous hosts. Persoonia 26, 57–69.

Quaedvlieg W, Verkley GJM, Shin HD, Barreto RW et al. 2013 – Sizing up Septoria. Studies in Mycology 75, 307–390.

Smith CW. 2002 Forest pest biological control program in Hawaii. pp. 91–98 in Smith, Clifford W, Denslow J, Hight S (eds). 2002. Proceedings of workshop on biological control of native ecosystems in Hawaii. Pacific Cooperative Studies Unit (University of Hawaii at Manoa, Department of Botany) Technical Report 129. Available at: accessed 16 March 2022.


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