''Polyscytalum pustulans'' is an

ascomycete Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota, forms the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes. It is the largest phylum of Fungi, with over 64,000 species. The def ...

fungus that is a

plant pathogen Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomycetes, bacteria, viruses, viroids, virus-like orga ...

causing skin spot of potatoes.

References

External links

Index Fungorum

USDA ARS Fungal Database
Fungal plant pathogens and diseases Potato diseases Enigmatic Ascomycota taxa Fungus species Fungi described in 1976 {{ascomycota-stub