Associations
provided by BioImages, the virtual fieldguide, UK
Foodplant / spot causer
amphigenous colony of Cercospora dematiaceous anamorph of Cercospora violae causes spots on live leaf of Viola riviniana
Remarks: season: 6-7
Foodplant / shot hole causer
sessile, often confluent sporodochium of Myrothecium dematiaceous anamorph of Myrothecium roridum causes shot holes on live leaf of Viola riviniana
Remarks: season: 6-7
In Great Britain and/or Ireland:
Foodplant / parasite
sporangium of Peronospora violae parasitises live Viola riviniana
Foodplant / gall
aecium of Puccinia violae causes gall of live petiole of Viola riviniana
Foodplant / spot causer
amphigenous colony of Ramularia anamorph of Ramularia lactea causes spots on live leaf of Viola riviniana
Remarks: season: 9-10
Foodplant / spot causer
epiphyllous, numerous, scattered, brownish pycnidium of Septoria coelomycetous anamorph of Septoria violae causes spots on fading stipule of Viola riviniana
Remarks: season: 8-9
Foodplant / gall
spore mass of Urocystis violae causes gall of live petiole of Viola riviniana
Remarks: season: 11-7
