• Chaenotheca brunneola (Ach.) Müll.Arg.
Chaenotheca brunneola
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‘Pinhead’ lichen (glossy black, pin stalks to 2mm high) with a non-frosted, disc top producing a brown spore mass at maturity. The thallus is just visible on the tree as a thin, granular streak with no orange or yellow colouration; it gives a K-, Pd+ yellow reaction. On dry, acid-barked trees, uncommon. Northern and southern Ireland, absent from the midlands.

Key characteristics

  • Has brown spore mass at maturity; stalks, smooth, shiny, black; the maturing disc not frosted
  • Thallus without bright colouration, greyish, Pd+ yellow; dry bark of both deciduous and evergreen trees.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Chaenotheca brunneola (Ach.) Müll.Arg.. [In] LichenIreland. Accessed on 2018-08-14.