Tar Spot of Holly Macroderma curtisii (Berk. & Ravenel) Höhn.    Synonyms: Rhytisma curtisii.
Kingdom Fungi   >   Phylum Ascomycota   >   Class Leotiomycetes   >   Order Rhytidiales   >   Family Rhytidiaceae   >   Genus Macroderma   

Status:

Macroderma curtisii is a microscopic, pathogenic fungus. Observations without microscopic or molecular confirmation are speculative.

Description:

Tar Spot of Holly starts as a yellow spot on the leaf in the fall and becomes a dark black bubble (stromata) late in the year. In the spring of the following year the bubble bursts exposing the orangish apothecia within (where the spores are produced)(Luttrell 1940, Bull. Torrey Bot. Club.).

Relationships:

Tar Spot of Holly infects American Holly.

There are 6 records in the project database.

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Tar Spot of Holly in Howard Co., Maryland (Date obscured). (c) johnbotany, some rights reserved (CC BY-NC). Photo by John Hall. (MBP list)

Tar Spot of Holly in Howard Co., Maryland (Date obscured). (c) johnbotany, some rights reserved (CC BY-NC). Photo by John Hall. (MBP list)


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