LICHALP

Graphis betulina (Pers.) Ach.

Syn.: Graphis juglandis Garov. ex A. Massal., Graphis scripta (L.) Ach. var. betulina (Pers.) Arnold, Opegrapha betulina Pers.

Lichenised. Poorly known taxon.

Substrate: bark

Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a taxon of the G. scripta-group with apothecia surrounded by a conspicuous, often raised white thalline margins; on bark of broad-leaved trees in various forest types; widespread in the Holarctic region, but for a long time not distinguished and distributional data therefore likely to be incomplete; also known from several localities in the Alps, but less common than G. scripta or G. pulverulenta. See also note on G. scripta.