Irish lichens

Marchandiomyces aurantiacus

Order: Ceratobasidiales       Family: Incertaesedis

Species: Marchandiomyces aurantiacus

Lichenicolous fungus
Photos: On Physcia tenella. Macroom, Co. Cork, SW Ireland.
Identification needs confirming

Orange sclerotia occuring on dead and dying parts of the host thallus.
Parasitic on corticolous Physcia species, sometimes spreading to neighbouring lichens. It is probably widespread but is infrequently recorded.

Similar: Marchandiomyces corallinus. Sclerotia bright pink, on various lichens including Parmelia and Physcia species.

Marchandiomyces aurantiacus
Marchandiomyces aurantiacus. November 2010

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