Synonyms: Cylindrospora deformans, Cylindrosporium deformans, Fusidium vaccinii.
Common name: cowberry redleaf.
Extract from Wikipedia article: Exobasidium vaccinii var. japonicum is a plant pathogen.
Arabic: زملول ياباني, Cebuano: Exobasidium japonicum, German: Kulturazaleen-Nacktbasidie, Swedish: Azaleasvulst.
Exobasidium vaccinii is a parasitic fungus that infects plants in the heath family, particularly blueberries and huckleberries. In East and Central Texas, it has been found to cause Exobasidium leaf gall on Vaccinium species, resulting in swollen, distorted leaves with a white or pinkish powdery coating of fungal spores. The fungus is typically found in acidic soils and moist environments, and its presence has been documented in the region's woodland edges, savannas, and bogs.
Azalea gall fungus Exobasidium vaccinii on leaves of rhododendron in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, June 26, 2019
Big Creek Trail, Shepherd, TX 77371, USAThe observation of Exobasidium vaccinii in East and Central Texas revealed its presence on rhododendron leaves in the Big Creek Scenic Area of Sam Houston National Forest, specifically in Shepherd, Texas, on June 26, 2019. The fungus was found to cause galls on the leaves, which is a characteristic symptom of Exobasidium vaccinii infection. This observation suggests that the fungus is active in the region during the summer months. The discovery of Exobasidium vaccinii on rhododendron in this area highlights the need for further study to understand its distribution and impact on plant species in East and Central Texas. The presence of this fungus may have implications for the health and management of rhododendron populations in the region, particularly in areas with similar environmental conditions. Further research is needed to fully understand the extent of its occurrence.
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