LICHALP

Arthonia bueriana (J. Lahm) Zahlbr.

Syn.: Coniangium bueriana J. Lahm

Non- or doubtfully 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 rare, non-lichenised corticolous species with a brown hypothecium reacting K+ green, whereas the hymenium reacts K+ red, known from a few stations in the montane belt of the Alps and in Central Europe; at low altitudes usually on bark of Quercus; extinct in many parts of Europe.