Contributions towards a monograph of Phoma (Coelomycetes) - VII - Section Sclerophomella: Taxa with thick-walled pseudoparenchymatous pycnidia

This paper deals with ten species of Phoma, characterized by thick-walled p seudoparenchymatous pycnidia. They superficially resemble the thick-walled pycnidial phenotype in species of Phoma sect. Plenodomus, but scleroplecten chyma is lacking and teleomorphs belong to Didymella, not Leptosphaeria. Ke ys and indices of host-fungus and fungus-host relations are provided and sh ort comments on the ecology and distribution of the taxa are given.