Marchandiomyces corallinus

A lichenicolous fungus with bright pink coralloid sclerotia (formerly believed to be sporodochia) on dead and dying areas of the host thallus.

Found on a number of different lichen hosts, especially Parmelia and Physcia species, frequently causing extensive die-back of Parmelia saxatilis on walls and boulders.

All year round.

Widespread in Britain.

Uncommon or rarely recorded in Leicestershire and Rutland.