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This pale grey to white, rock-inhabiting crustose species occurs commonly on acid rocks in upland areas where it can be found on drystone wall field boundaries as well as on outcrops and boulders. The small, white soralia are reminiscent of those of P. amara or P. lactea but it is K+ brown-red, and C-. The soralia are not bitter tasting. It is scattered throughout upland Ireland.
Original text submitted by Simon Davey
|Simms, M. J., (2016). Pertusaria aspergilla (Ach.) J.R.Laundon. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=19390 Accessed on 2016-05-31.