Mycosphaerella isariphora (Desmazières) Johanson, 1884
Stellaria holostea, Belgium, prov. Antwerp, Laakdal, Ossenbroeken, 26.i.2020 © Carina Van Steenwinkel: perithecia
perithecium with asci
same material, a few days later
bundle of sterile hyphae
Ascosporen hyalien, 1-septate, 3-4 x 10-14 µm.
Stellaria holostea, media.
distribution within Europe
Mycosphaerella isariophora: Ellis & Ellis.
The observation that from material of Mycosphaerella isariphora after a short while Phacellium episphaerium developed is in indication at the latter is the anamorph of the first one. This agrees with the observation by Mułenko & Kozłowska, who frequently found both taxa together, “even even at the same sites, causing combined infections”. It is commonly assumed that Mycosphaerella isariphora is the teleomorph of Septoria stellariae, but that assumption is doubted by Verkley ao.
Ellis & Ellis (1997a), Mułenko & Kozłowska (2010a), Verkley, Quaedvlieg, Shin ao (2013a)