Rubus | Rubus idaeus | Rubus ursinus | Rubus ulmifolius | ''Rubus ursinus'' (''R. vitifolius'') | Rubus armeniacus | red raspberry (''Rubus idaeus'') | Rubus phoenicolasius | Rubus parviflorus | Rubus leucodermis | Rubus laciniatus | Rubus coreanus | Rubus chamaemorus |
It is a plant pathogen and grows on Rubus laciniatus, R. nessensis, R. procerus and wild blackberry (R. fruticosus); it causes purple blotch or stem spot disease, also known as dieback of blackberries.