• Micarea leprosula (Th.Fr.) Coppins & A.Fletcher
Micarea leprosula
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Look for this lichen between low-growing ericaceous shrubs and over the mossy plant debris of acid rocks and boulders, where the small, spherical, blue-grey areoles cling tightly together to form a clumpy crust that tests C+ red, Pd+ red. The tiny areoles frequently dissolve to form patches of soredia. In Ireland, the species is not uncommon in upland areas with siliceous rock.

Key characteristics

  • Thallus: an amalgamation of scores of small blue-grey globose areoles forming a coarse granular crust reacting C+ red, Pd+ red
  • On acid soils over rocks, often growing in crevices between stones and plant debris.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Micarea leprosula (Th.Fr.) Coppins & A.Fletcher. [In] LichenIreland. Accessed on 2018-08-16.