LichenIreland
  • Hypotrachyna revoluta (Flörke) Hale
Hypotrachyna revoluta
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This foliose lichen usually forms pale grey rosettes on bark and on natural or artificial rock. The lobes which are never long or narrow are incised, like jigsaw pieces while the turned-down lobe tips appear burnt like singed newspaper. Off-white or blackened soredia (granular powder that is a mixture of fungal hyphae and algae) develop along the edge of the lobes sometimes obscuring the centre of the thallus. It is plentiful on trees and rock outcrops especially in moist situations.

Key characteristics

  • Lobe tips turned under and browned like paper against a hot lamp
  • Blackish soredia are produced near the lobe ends.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Hypotrachyna revoluta (Flörke) Hale. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18895 Accessed on 2017-11-18.