LichenIreland
  • Xanthoriicola physciae (Kalchbr.) D.Hawksw.
Xanthoriicola physciae
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This is a lichenicolous fungus that occupies the fruits of Xanthoria parietina. It occurs on its host most frequently in coastal locations. It is almost certainly under-recorded in Ireland, where it is probably frequent in suitable habitats.

Key characteristics

  • The blackening of the discs thus obscuring their usual orange colour in Xanthoria parietina immediately suggests this species
  • The fungus may also affect the rest of the host.

Original text submitted by Simon Davey