Buellia triseptata A. Nordin

Syn.: Buellia lauricassiae auct. eur. non (Fée) Müll. Arg., Buellia triphragmia auct. non (Nyl.) Arnold
Lichenised. Poorly known taxon.
Substrate: lignum
Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: mainly lignicolous, more rarely on the bark of conifers in upland areas, this taxon needs further study.
Austria: Vorarlberg; Tirol; Salzburg; Steiermark; Niederösterreich (incl. Wien); Switzerland: Graubünden; France: Haute-Alpes; Italy: Trentino Alto Adige; Piemonte;