Mycodiella
Mycodiella Crous, in Crous et al., Persoonia 37: 337 (2016).
Index Fungorum number: IF 819085; Facesoffungi number: FoF 08513, 3 morphological species (Species Fungorum 2022), 2 species with molecular data.
Associated with leaf spot. Sexual morph: Ascomata pseudothecial, brown, erumpent, globose; wall consisting of 2–3 layers of medium brown textura angularis. Asci aparaphysate, fasciculate, bitunicate, subsessile, obovoid, straight to slightly curved, 8-spored. Ascospores multiseriate, overlapping, hyaline, guttulate, thin-walled, straight to slightly curved, fusoid-ellipsoidal with obtuse ends, widest in middle of apical cell, medianly uniseptate. Asexual morph: Unknown (adapted from Crous et al. 2016; Videira et al. 2017).
Type species: Mycodiella eucalypti Crous
Notes: Mycodiella is characterised by pseudothecial, brown, erumpent ascomata, aparaphysate, subsessile, obovoid asci and multiseriate, overlapping, hyaline, fusoid-ellipsoidal ascospores with obtuse ends. Mycodiella is closely related to Polyphialoseptoria but can be differentiated in that the latter has polyphialides and is characterised only by the asexual morph. Mycodiella is morphologically and phylogenetically a well-supported genus in Mycosphaerellaceae. Molecular markers available for Mycodiella are ITS, LSU, Actin, BTUB, Calmodulin and RPB2.
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