Fungi: Ascomycota: Dothideomycetes: Botryosphaeriales: Botryosphaeriaceae: Botryosphaeria dothidea (Moug.) Ces. & De Not.

Botryosphaeria dothidea – Asteromyia gall midge fungus

Synonyms: Botryosphaeria rosae, Caumadothis dothidea, Dothidea rosae, Sphaeria dothidea, Xyloma rosae.

Common name: Asteromyia gall midge fungus.

Extract from Wikipedia article: Botryosphaeria dothidea is a plant pathogen that causes the formation of cankers on a wide variety of tree and shrub species. It has been reported on several hundred plant hosts and on all continents except Antarctica. B. dothidea was redefined in 2004, and some reports of its host range from prior to that time likely include species that have since been placed in another genus. Even so, B. dothidea has since been identified on a number of woody plants—including grape, mango, olive, eucalyptus, maple, and oak, among others—and is still expected to have a broad geographical distribution. While it is best known as a pathogen, the species has also been identified as an endophyte, existing in association with plant tissues on which disease symptoms were not observed. It can colonize some fruits, in addition to woody tissues.

Photos of this mushroom from East and Central Texas

Flat-topped goldenrod (Euthamia leptocephala) with leaf tar spots caused by gall midge Asteromyia euthamiae with a symbiotic fungus Botryosphaeria dothidea in Lick Creek Park. College Station, Texas, June 1, 2022
Deer Run Trail, College Station, Brazos County, Texas, United States

Asteromyia gall midge fungus (Botryosphaeria dothidea) on leaves of flat-topped goldenrod (Euthamia leptocephala) in Lick Creek Park. College Station, Texas, June 1, 2022
Deer Run Trail, College Station, Brazos County, Texas, United States

Tissues of Asteromyia gall midge fungus (Botryosphaeria dothidea) under a microscope, collected in Lick Creek Park. College Station, Texas, June 1, 2022

Leaves of goldenrod Solidago canadensis with raised white cushions caused by gall midges Asteromyia carbonifera and symbiotic fungus Botryosphaeria dothidea inside the galls on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States

Galls on leaves of goldenrod Solidago canadensis caused by gall midges Asteromyia carbonifera with symbiotic fungus Botryosphaeria dothidea on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States

Gall fungus Botryosphaeria dothidea (in Congo Red solution) collected from leaf tar spots on goldenrod on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022

Fungus Botryosphaeria dothidea (in Congo Red solution) collected from leaf tar spots on goldenrod on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022

Flat-topped goldenrod (Euthamia leptocephala) with leaf tar spots caused by gall midge Asteromyia euthamiae with a symbiotic fungus Botryosphaeria dothidea in Lick Creek Park. College Station, Texas, September 29, 2022
Deer Run Trail, Pebble Creek, College Station, Brazos County, Texas, United States

Comments

• Data for this species were obtained from the dataset https://www.gbif.org.
• There is a Wikipedia article about this species.

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Acknowledgements

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