Species: Baeomyces rufus
Photos: On shaded acidic rock. Ballingeary, Cork, SW Ireland.
Granular greenish-grey thallus, becoming sorediate or squamulose. Apothecia on pale, almost translucent stalks or furrowed and more/less sessile. Dull-pink to reddish brown hymenium.
Thallus: K+ yellow, KC+ yellow, P+ orange, UV-
Common throughout Ireland in damp shady situations; gravel, peat or sandy soils, acidic rocks.
Host to Arthrorhaphis grisea
Similar: Dibaeis baeomyces. K+ yellow turning orange, UV+ orange
Baeomyces rufus. On acidic rock, Ballingeary area, Co.Cork. December 2008