in Arup, Søchting & Frödén, Nordic J. Bot. 31: 76 (2013).

Basionym: Lichen aurantius Pers., Ann. Bot. (Usteri) 11: 14 (1794).

Protolog type data: Prov. elegans haecce species ad rupes calcarias. (Prope Witgenhaussen in Hassia.).

Type locality: Germany, Hesse, Regierungsbezirk Kassel, Werra-Meißner-Kreis, an Kalkfelsen beim Dorfe Wendershausen unweit Witzenhausen an der Werra, 220 m, 1883, Dannenberg, 4825/3, Arnold: Lichenes Exsiccati 989 sub Physcia aurantia, (M-0127045 - neotype).

"An Kalkfelsen beim Dorfe Wendershausen unweit Witzenhausen an der Werra [Germany, Hesse], 1883, Dannenberg [Arnold's Lichenes Exsiccati no 989 sub Physcia aurantia, M (M-0127045)!" neotype designated in Soun, Mycotaxon 111: 331 (2010); PRM! - isoneotype.

Type locality coordinates: Data lacking.

Molecular barcode: Data lacking.

Thallus: crustose, lobate. Lobes flat, deep orange. Cristalline layer in the cortex absent. Apothecia frequent. Spores lemon-shaped.

Photobiont: Green alga.

Chemistry:

Ecology: Saxicolous on limestone.

Molecular data: Genbank

Distribution: Database

Note: The locality of the neotype is identical with the type locality of the Persoon material according to the label text of Arnold's Lichenes Exsiccati 989.

The authorities of Caloplaca aurantia have been named in different versions:
Caloplaca aurantia (Pers.) Hellb. by Wirth et al. (2011: 27).