Azalea Gall Exobasidium rhododendri (Fuckel) C.E. Cramer  Synonyms: Exobasidium vaccinii var. rhododentri .

Description:

Galls, caused by the fungus Exobasidium rhododendri, appear occasionally on various species of azaleas in the spring. The fungus invades expanding leaves and flower buds. Older leaves and flowers are not affected (J. Solem, pers. comm.).

Relationships:

This gall-looking fungus grows exclusively on azaleas.

There are 11 records in the project database.

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An Azalea Gall growing on Swamp Azalea in Garrett Co., Maryland (6/9/2013). This gall looking fungus grows exclusively on azaleas. Photo by Jim Brighton. (MBP list)

An Azalea Gall in Garrett Co., Maryland (6/9/2013). Photo by Jim Brighton. (MBP list)

An Azalea Gall growing on Swamp Azalea in Caroline Co., Maryland (6/16/2013). Photo by Jim Brighton. (MBP list)

An Azalea Gall on a Pinxter Flower in Howard Co., Maryland (5/13/2017). Found by Felicia Lovelett and determined by Robert Solem. Photo by Kurt Schwarz. (MBP list)

A split Azalea Gall on Pinxter Flower in Howard Co., Maryland (5/15/2017). Spores will not form until later in the year after the gall becomes covered with a white mold-like growth. Determined by Robert Solem. Photo by Joanne Solem. (MBP list)

Azalea Gall on Swamp Azalea in Caroline Co., Maryland (6/24/2017). Photo by Bill Hubick. (MBP list)

Azalea Gall in Garrett Co., Maryland (5/18/2019). Photo by Jim Brighton. (MBP list)


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