''Rhytisma punctatum'' is a species of

fungus A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...

in the family

Rhytismataceae The Rhytismataceae are a family of fungi in the Rhytismatales order. It contains 55 genera and 728 species. Genera According to the 2007 Outline of Ascomycota, the following genera are in the Rhytismataceae. The placement of the genus '' Nymano ...

. The fungus causes speckled tar spot of

maple ''Acer'' is a genus of trees and shrubs commonly known as maples. The genus is placed in the soapberry family Sapindaceae.Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 nd more or less continuously updated si ...

leaves. The small spots are black, raised from the leaf surface, and occur in dense groups on the upper surface. Areas afflicted by the fungus will retain their color even after the remainder of the leaf has faded.

References

External links

* Fungi described in 1800 Fungal plant pathogens and diseases Leotiomycetes Taxa named by Christiaan Hendrik Persoon Fungus species {{fungus-plant-disease-stub