LichenIreland
  • Lecidea plana (J.Lahm) Nyl.
Lecidea plana
Click on map to open large map in new window
(Map updated: 11 August 2009)

In appearance the thallus of this species is like L. lapicida (described elsewhere), but in L. plana spot tests are all negative. The consistently pale grey thallus, and discs remaining black when moist, separate it from L. lithophila (thallus with rusty patches). A section through the exciple (disc rim) shows up as yellow-grey. Siliceous rocks, more frequent in Northern Ireland.

Key characteristics

  • Cracked, consistently grey crustose lichen, thallus K-; discs remaining black when moist, exciple in section yellow-grey
  • Siliceous rock; a predominantly northern upland species.

Original text submitted by Vince J. Giavarini

 
 Simms, M. J., (2016). Lecidea plana (J.Lahm) Nyl.. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=18707 Accessed on 2018-10-20.