• Buellia ocellata (Flot.) Körb.
Buellia ocellata
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(Map updated: 11 August 2009)

Where there are old granite or sandstone headstones in a churchyard or smooth siliceous rocks near the sea the small, mosaic-forming, greenish-grey thallus of this lichen is very likely to be present. It is commonly found growing with its relative B. aethalea (described elsewhere) which is of similar size and configuration. Except for the discs which have a thin crumply margin it can be separated on the basis of its greenish thallus colour and reaction to fresh bleach (C) which turns it orange. It is widely distributed in Ireland in suitable habitats.

Key characteristics

  • Like B. aethalea in size and mosaic-forming habit
  • Greenish thallus which is C + orange.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Buellia ocellata (Flot.) Körb.. [In] LichenIreland. Accessed on 2020-10-21.