Cookella Sacc., Michelia 1(no. 4): 407 (1878).

MycoBank number: MB 1225; Index Fungorum number: IF 1225, Facesoffungi number: FoF 07957; 4 morphological species (Species Fungorum 2020), molecular data unavailable.

Type: Cookella microscopica Sacc.

Notes: Cookella was introduced to accommodate C. microscopica found on lower surface of leaves of Quercus pedunculatum (oak) in Italy (Saccardo 1878). The genus needs sequence data to resolve its generic placement.