Exobasidium r-macrophyllum-galls-from-taxon-split
The inducer of this gall is unknown or undescribed.
Family: Exobasidiaceae | Genus: Exobasidium
Hosts: Rhododendron macrophyllum
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Our ID Notes may contain important tips necessary for distinguishing this gall from similar galls and/or important information about the taxonomic status of this gall inducer.
Some New or Noteworthy Fungi on Ericaceous Hosts in the Pacific Northwest
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"Exobasidium Vaccinii-uliginosi" [name now applies only to galls on Vaccinium uliginosum, so the cause of these galls is one or more undescribed species of Exobasidium]
causes a distinct witches’ broom with white (pinkish) leaves on Rhododendron californicum [since renamed R. macrophyllum]. ... This disease does considerable damage to the Rhododendron in the Cascade mountains. It is so characteristic in appearance that it cannot be mistaken
”- Zeller, S.M.: (1934) Some New or Noteworthy Fungi on Ericaceous Hosts in the Pacific Northwest©
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Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value r-macrophyllum-galls-from-taxon-split on iNaturalist. You can view them here:
