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Lepraria incana ! {(L.) Ach. 1803 }
Thallus a diffuse, thin, powdery crust, lacking a medulla or any marginal differentiation into lobes, pale grey to distinctly blue-grey, apothecia unknown. In shaded places on acid rocks, walls and tree-trunks, widespread and evidently common, but part of a complex of species that require thin-layer chromatography for certain identification.!!!!!! ( http://www.lichens.lastdragon.org/Leprar... )
The Stereocaulaceae are a family of lichenized fungi in the order Lecanorales. Species of this family are widely distributed in temperate boreal and austral regions
Greenish-grey or pale grey thallus comprised of very small fluffy granules with no clear lobes or white, 'cottony' medulla. On shaded trees, mosses and acidic rocks. Chemical reactions negative. UV+ white ( http://www.irishlichens.ie/pages-lichen/... ), ( http://www.mycobank.org/MycoTaxo.aspx?Li... )
sorry lars but the "physica millegrana" doesn't convince me. I entered the latin name at google-image, take a look, the most are branched, little leaf like structures! Mine was powdery bumpy. But without your suggestion would have finding an id, surely taken longer- thx
Spotted on Feb 19, 2012
Submitted on Feb 20, 2012
