Mycosphaerellales » Mycosphaerellaceae » Stigmidium

Stigmidium schaereri

Stigmidium schaereri (A. Massal.) Trevis., Conspect. Verruc.: 17 (1860).

≡ Sphaeria schaereri A. Massal., Lecidea Hookeri: 8 (1853).

            Index Fungorum number: IF 119508; Facesoffungi number: FoF 11314, Fig. 1

            Description: see Videira et al. (2017).

Material examined: see Videira et al. (2017).

Fig. 1 Stigmidium schaereri (re-drawn from Fig. 21 in Crous et al. 2014). a Asci with ascospores. b Ascospores. Scale bars = 10 μm.

 

Importance and distribution

Species of Stigmidium are associated with leaf spot. There are 110 Stigmidium epithets in Index Fungorum (2022), but several species have been transferred to Endococcus, Enterographa, Sphaerellothecium and Zwackhiomyces. Stigmidium comprises 96 species known on wide range of plants such as Caloplaca ferruginea (Teloschistaceae), Catapyrenium sp. (Verrucariaceae), Ephebe lanata (Lichinaceae), Graphis scripta (Graphidaceae), Lecanora sp. (Lecanoraceae), Parmelia conspersa (Parmeliaceae), Peltigera sp. (Peltigeraceae), Pertusaria lactea (Pertusariaceae), Polyblastia theleodes (Verrucariaceae), Solorina sp. (Peltigeraceae) and Verrucaria mucosa (Verrucariaceae). Stigmidium is reported mainly from Europe (Italy, Poland, the United Kingdom). Stigmidium has high diversity, but all species lack molecular data. Stigmidium must be re-collected and sequenced for future studies.

 

References 

Crous PW, Braun U, Groenewald M. 2014 – Mycosphaerella is polyphyletic. Studies in Mycology 58, 1–32. https://doi.org/10.3114/sim.2007.58.01

Roux C, Triebel D. 1994 – Révision des espèces de Stigmidium et de Sphaerellothecium (champignons lichénicoles non lichénisés, Ascomycetes) correspondant ou à Pharcidia epicrymatia sensu Keissler ou à Stigmidium schaereri auct. Bulletin de la Société Linéenne de Provence 45, 451–542. https://www.researchgate.net/profile/Claude-Roux-2/publication/284100271_Revision_des_especes_de_Stigmidium_et_de_Sphaerellothecium_champignons_lichenicoles_non_lichenises_Ascomycetes_correspondant_a_Pharcidia_epicymatia_sensu_Keissler_ou_a_Stigmidium_schaereri_auct/links/5d19cc5e458515c11c06c6c7/Revision-des-especes-de-Stigmidium-et-de-Sphaerellothecium-champignons-lichenicoles-non-lichenises-Ascomycetes-correspondant-a-Pharcidia-epicymatia-sensu-Keissler-ou-a-Stigmidium-schaereri-auct.pdf

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. https://doi.org/10.1016/j.simyco.2017.09.003

 

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