Black Tar Spot Rhytisma acerinum Hudler & Banik    
Kingdom Fungi   >   Phylum Ascomycota   >   Class Leotiomycetes   >   Order Rhytismatales   >   Family Rhytismataceae   >   Genus Rhytisma   

Status:

This is a microscopic fungus. Observations without microscopic details are speculative.

Description:

This microscopic fungus causes black tar spots on many species, especially species of Maple (Acer spp.). Observation of microscopic features is necessary to distinguish this species from other fungi causing tar spots on maples (e.g., Rhytisma americana).

There are 17 records in the project database.

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Black Tar Spot in Prince George's Co., Maryland (4/26/2020). (c) willet63, some rights reserved (CC BY-NC). Photo by willet63 via iNaturalist. (MBP list)


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