Herzogia 9, 1-2: 56 (1992).
Protologue type data: An der Levada da Serra do Faial entlang, etwas SW von Santo da Serra in Richtung Camacha. In letzten Resten eines alten, jedoch stark gestörten, NW-exponierten Eucalyptus-Waldes. An Erica arborea. 750 m. 13. Viii. 1990; leg. K. K. no. 23183 (Holotypus!) & A. K. (Holotypus, Kalb; Isotypen, GZU, Hafellner).
Type locality: Portugal, Madeira, at the Levada da Serra do Faial, somewhat SW of Santo da Serra in direction of Camacha, in the last remains, but strongly disturbed, NW-exposed Eucalyptus-forest, on Erica arborea, 750 m, 13.8.1990, K. Kalb 23183 & A. Kalb (Kalb - holotype; GZU, Hafellner - isotypes).
Type locality coordinates: 32°40'38"N, 16°50'51"W; 32.677222°, -16.8475°.
ITS barcode: Data lacking.
Description: Data lacking.
Photobiont: Data lacking.
Chemistry: No lichen substances.
Ecology: Data lacking.
Distribution type: Madeira.
Taxonomy: Data lacking.
Note: In Macaronesia samples of Buellia regularis have probably equivocated with Buellia disciformis (see Hafellner 1995: 492).
Distribution Database: Distributions
Distribution Database: Discover Life
Picture Database: Tropical Lichens
Molecular Database: Genbank
Synonym Database: Index Fungorum
Synonym Database: Mycobank
The species has not been found outside Madeira up to now.