Plant Health R

Host genus Fungal species Symptoms and notes
Ranunculus Entyloma ficariae Causes a leaf smut
Uromyces ficariae Rust on leaves
Rhynchospora Ustanciosporium gigantosporum Ovary smut, causing dwarfing of infected shoots
Ribes Drepanopeziza ribis Causes leaf spot of various species, including R. nigrum, R. rubrum and R. uva-crispa
Puccinia ribesii-pendulae Rust of stems and petioles; dubiously present in Britain due to morphologically similar species also reported from this host
Rosa Elsinoë rosarum Anthracnose spots on leaves and stems
Phragmidium rosae-pimpinellifoliae Rust of stems and leaves, principally on Rosa pimpinellifoliae
Phragmidium tuberculatum Rust of leaves, on R. canina, R. rubiginosa, R. rugosa etc.
Rubus Elsinoë veneta Anthracnose lesions of stems, causing death of the cane if uncontrolled. Primarily associated with R. idaeus and hybrids.
Kuehneola uredinis Rust of leaves, petioles and stems
Phragmidium bulbosum Leaf rust of Rubus fruticosus agg., also reported on R. caesius.
Phragmidium rubi-idaei Leaf rust of Rubus idaeus
Phragmidium violaceum Rust of leaves of Rubus fruticosus agg.
Rumex Puccinia phragmitis Rust on leaves. Uredinia and telia on Phragmites
Ramularia pratensis Causes leaf spot
Ruscus Phaeosphaeriopsis glaucopunctata Associated with death of cladodes and dieback of shoots

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith