Associations
provided by BioImages, the virtual fieldguide, UK
In Great Britain and/or Ireland:
Lichen / parasite
apothecium of Abrothallus usneae parasitises thallus of Usnea
Fungus / parasite
Abrothallus usneae parasitises Biatoropsis usnearum
Fungus / parasite
pycnidium of Lichenoconium coelomycetous anamorph of Lichenoconium usneae parasitises apothecium of Abrothallus usneae