Readerielliopsidaceae Abdollahz. & Crous, fam. nov.

MycoBank number: MB 833170; Index Fungorum number: IF 833170; Facesoffungi number: FoF;

Etymology: Name refers to the genus Readerielliopsis.

Mycelium superficial or immersed, hyaline to pale brown, branched, hyphae smooth, thin-walled, septate, constricted at septa, with a mucilaginous outer wall layer. Pycnidia superficial, globose to pyriform, cylindrical to flask-shaped, short to long, straight to irregular, occurring singly or in groups, medium to dark brown, if synnematous, then with a hyaline to pale brown stalk forming a long neck. Ostiole absent, or present, with or without hyphal hairs. Conidia small, hyaline, smooth, aseptate, oblong to ellipsoid or obdeltoid, or pale to medium brown, transversely euseptate, filiform, fusoid-ellipsoidal.

Type genus: Readerielliopsis Crous & Decock