• Bacidia rubella (Hoffm.) A.Massal.
Bacidia rubella
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This crustose epiphyte has a yellow-green thallus composed of minute isidia-like granules. Discs (to 1mm diam.) are common, orange-brown to almost red with pronounced margins. These are quick to attract the attention of the lichen hunter. It occurs on the basic bark of nutrient-rich trees, and is relatively frequent throughout Ireland.

Key characteristics

  • The habitat, granular, yellow-green thallus and reddish-brown fruits are diagnostic
  • It often occurs squeezed in between foliose species.

Original text submitted by Simon Davey

 Simms, M. J., (2016). Bacidia rubella (Hoffm.) A.Massal.. [In] LichenIreland. Accessed on 2018-07-16.