Dothidella Speg., Anal. Soc. Cient. Argent. 9: 9 (1880).
MycoBank number: MB 4327; Index Fungorum number: IF 4327; Facesoffungi number: FoF 06490, 34 morphological species (Species Fungorum 2020), molecular data unavailable.
= Polystomella Speg., Anal. Soc. cient. argent. 26(1): 53 (1888).
Type species: Dothidella australis Speg.
Notes: Dothidella is the type genus of Polystomellaceae and was introduced by Spegazzini (1880). Many species of Dothidella were transferred to Endodothella, Microcyclus, Phyllachora, Rehmiodothis and Stigmochora which belong to Mycosphaerellaceae and Phyllachoraceae (Index Fungorum 2017). They share similar characters such as being biotrophic or parasitic on leaves and have 1–2-celled, hyaline ascospores. Dothidella differs from other genera by its multi- loculate ascostromata and ellipsoidal hyaline two celled ascospores, while Phyllachora (Phyllachoraceae) has uni- locular ascostromata, unitunicate asci and one celled, hyaline ascospores, and Microcyclus (Mycosphaerellaceae) has multi-loculate ascostromata with two celled hyaline obovoid ascospores (Monkai et al. 2013).