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This striking yellow-green lichen is a common sight on shaded siliceous rocks, for example, sandstones, and the shaded brickwork of old buildings. It is relatively insensitive to industrial pollution. It consists of a powdery crust often spreading extensively over the substrate. It is occasionally fertile, with rather pale, small, yellowish-beige discs. Under a UV lamp it is dull to bright orange which helps to separate it from some similarly coloured sterile species.
Original text submitted by Simon Davey
|Simms, M. J., (2016). Psilolechia lucida (Ach.) M.Choisy. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=18964 Accessed on 2016-12-03.