Lepraria atlantica

The type specimen was collected in Ireland, in West Donegal, southeast of Glenties along the Owenbhan River, at an elevation of 80 metres.

The specimen was found on a shaded, damp rock face beside a wooded stream, growing alongside Diplophyllum albicans.

[2] Like most members of its genus, this lichen forms a powdery to cottony crust that lacks distinct edges or lobes.

There is no true medulla, but the lichen has a patchy base layer (hypothallus) consisting of sparse hyphae that range from white to dull orange in colour.

Short projecting threads (hyphae) are rarely present on these granules, and larger clusters of soredia (consoredia) are uncommon.