• Heterodermia japonica (M.Sato) Swinscow & Krog
Click on the thumbnails to enlarge the images
Heterodermia japonica
© Robert Thompson
Heterodermia japonica
© Robert Thompson
Heterodermia japonica
© Mike Simms
Heterodermia japonica
Click on map to open large map in new window
(Map updated: 11 August 2009)

Click here to view an interactive map of the Northern Ireland dataset as currently collated by CEDaR.
The map is generated through the NBN Gateway using their Interactive Mapping Tool.


The K+ yellow thallus of this attractive foliose lichen consists of pale grey radiating rosettes. The fan-like lobes have hair-like cilia on the margins that mix with the grey, granular soralia. Discs are rare. Its habitats range from short coastal grasslands and old sea-pink cushions to mossy tree trunks (often rather high up) of oak, ash, hazel and willow. The species is widespread but local in Ireland.

Key characteristics

  • The smooth, fan-shaped rosettes of pearl-grey lobes tipped with cilia and soredia is distinctive
  • On long-standing mossy trees; sea-pink cushions should be searched.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Heterodermia japonica (M.Sato) Swinscow & Krog. [In] LichenIreland. Accessed on 2018-08-17.