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As one of the ‘bark pimple’ tribe with one-septate spores, this lichen can be difficult to separate from lookalikes such as A. punctiformis and A. nitescens (both described elsewhere). The thallus is generally browner than that of A. nitescens. A good field character to look for is the tip of the discs (perithecia) for the pore-like opening or ostiole. In a good number of examples of A. salicis this is markedly sunken or depressed as though squashed down. It grows on smooth-barked trees such as hazel. Widespread; northern half of Ireland mostly.
Original text submitted by Vince J. Giavarini
|Simms, M. J., (2016). Arthopyrenia salicis A.Massal.. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=39571 Accessed on 2017-03-29.