In Great Britain and/or Ireland:
Foodplant / saprobe
epiphyllous, dimorphic conidioma of Ceuthospora coelomycetous anamorph of Ceuthospora mahoniae is saprobic on dead leaf of Mahonia aquifolium
Remarks: season: 3-4

Foodplant / parasite
aecium of Cumminsiella mirabilissima parasitises live leaf of Mahonia aquifolium
Other: unusual host/prey

Foodplant / saprobe
gregarious, covered then erumpent stroma of Cytospora coelomycetous anamorph of Cytospora foliicola is saprobic on dead leaf of Mahonia aquifolium

Foodplant / parasite
Erysiphe berberidis parasitises Mahonia aquifolium

Foodplant / feeds on
pycnidium of Phoma coelomycetous anamorph of Phoma mahoniae feeds on leaf of Mahonia aquifolium

Foodplant / spot causer
scattered, smoky-ochraceous, often barren pycnidium of Phyllosticta coelomycetous anamorph of Phyllosticta mahoniae causes spots on fading leaf of Mahonia aquifolium
Remarks: season: 9-3

Foodplant / feeds on
scattered to loosely gregarious pycnidium of Phyllosticta coelomycetous anamorph of Phyllosticta mahoniana feeds on fading leaf of Mahonia aquifolium
Remarks: season: 9-5

Foodplant / parasite
pycnium of Puccinia graminis parasitises live, fresh leaf of Mahonia aquifolium
Other: minor host/prey