Placostromella Petr., Sydowia 1(1–3): 9 (1947).
MycoBank number: MB 4141; Index Fungorum number: IF 4141; Facesoffungi number: FoF 08119; 3 morphological species (Species Fungorum 2020), molecular data unavailable.
Type species: Placostromella macrospora Petr., Sydowia 1(1–3): 9 (1947).
Notes: Placostromella was intoduced by Petrak (1947d) with Placostromella macrospora as type species. Later P. amazonensis and P. castanopsis were transferred to Placostromella (Inácio et al. 2005). Three taxa including the type are accepted in Placostromella (morphology see Thambugala et al. 2014b; Wijayawardene et al. 2018, 2020). This genus is characterized by subcuticular, carbonaceous, black, rounded or broadly ellipsoid ascostromata with a single locule, cylindrical to clavate asci and cylindric-ellipsoidal or oblong to obovate ascospores (Thambugala et al. 2014b).