LichenIreland
  • Leproloma vouauxii (Hue) J.R.Laundon
Leproloma vouauxii
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This pale grey, ‘powder lichen’ occurs often on shaded walls and mortar. The thallus is yellow-white to green and composed entirely of powdery granules. It is only weakly lobed. Where worn or damaged the white medulla layer may be exposed. It is scattered throughout Ireland with concentrations in the north-west.

Key characteristics

  • The weakly lobed appearance of the edge of the thallus and powdery, not cottony character of the granules, help to separate it from Lepraria lobificans. It prefers intermediate or weakly calcareous rocky habitats; also basic bark
  • The similar Leproloma membranacea which has a much more definite lobed edge to the thallus grows on very acid substrata.

Original text submitted by Simon Davey

 Simms, M. J., (2016). Leproloma vouauxii (Hue) J.R.Laundon. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=39670 Accessed on 2017-11-20.