• Usnea glabrata (Ach.) Vain.
Usnea glabrata
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(Map updated: 11 August 2009)

This shrubby ‘beard’ lichen has a small thallus (to 3cm tall) with branches smooth and shiny and slightly swollen and articulated as in U. cornuta. The disintegrating branch tips resemble U. esperantiana but that species has papillate branches (pimpled) and is K+ yellow-red and not K- as in U. glabrescens. It is easily overlooked, even by the experts, but will colonise a wide range of habitats including coastal shrubs and tarmac. In Ireland, the species has been recorded from Counties Galway and Wicklow.

Key characteristics

  • Tiny ‘beard’ lichen with smooth, shiny, slightly swollen non-papillate branches
  • It is K-, Pd+ rust red.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Usnea glabrata (Ach.) Vain.. [In] LichenIreland. Accessed on 2020-07-06.