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This lichen overgrows those dry soils of woodland banks where small tree roots have become exposed due to ground movements, windthrow or storms. Small, green-grey, granular patches can emerge after a few wet winters and then become covered in tiny blue-black spots which are the Micarea-sized discs. The tiny club-shaped spores are simple, 4–7 x 1–2µm. In Ireland, the species is rare.
Original text submitted by Vince J. Giavarini
|Simms, M. J., (2016). Psilolechia clavulifera (Nyl.) Coppins. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=18963 Accessed on 2016-12-08.