Fungi: Basidiomycota - rust fungus Puccinia coronata Barley Crown Rust Photographs on Rhamnus cathartica, Purging Buckthorn Hosts: Aecia on Frangula and Rhamnus spp. Uredinia and telia broadly oligophagous on Poaceae

Puccinia coronata
Badbury Rings, Dorset. June 2015