Exobasisium rhododendri on Rhododendron ferrugineum

Exobasisium rhododendri on Rhododendron ferrugineum

Observation - Exobasisium rhododendri on Rhododendron ferrugineum - Global. Description: This bright yellow gall is conspicuous at this time of year. It is a fungal gall.

This bright yellow gall is conspicuous at this time of year. It is a fungal gall.