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This is a ‘powder-lichen’ of hard calcareous rocks. It grows towards the base of cliffs and boulders and in caves and underhangs sheltered from direct sunlight and rain. The white or pale-grey thallus has a weakly-lobed margin and cottony centre. Reactions: C-, PD+ orange. Most Irish records of L. crassissima belong here. Western Ireland; scattered elsewhere.
Original text submitted by Vince J. Giavarini
Simms, M. J., (2016). Lepraria nivalis . [In] LichenIreland. http://www.habitas.org.uk/lichenireland/species.asp?item=18763 Accessed on 2018-04-23. |