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.
NBN Atlas mapping: Species account : NBN Atlas UK Species Observations database
iNaturalist: Species account : iNaturalist World Species Observations database
Original text submitted by Vince J. Giavarini
Vince J. Giavarini, (2016). Lepraria nivalis . [In] LichenIreland. http://www.habitas.org.uk/lichenireland/species.asp?item=18763 Accessed on 2025-02-10. |