• Mycomicrothelia wallrothii (Hepp) D.Hawksw.
Mycomicrothelia wallrothii
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.


Similar to M. confusa and M. atlantica (both described elsewhere), M. wallrothii is an Arthopyrenia lookalike species differing in its brown-coloured spores. It can be told from its two near relatives by the virtual absence of a thallus, the conspicuous fringe of cells around the discs and different host tree (birch).

Key characteristics

  • Thallus inapparent, discs with a halo-like fringe of cells plainly visible
  • Spores brown in the ascus, but externally very like a species of Arthopyrenia or Leptorhaphis; on birch.

Original text submitted by

 Simms, M. J., (2016). Mycomicrothelia wallrothii (Hepp) D.Hawksw.. [In] LichenIreland. Accessed on 2018-07-22.