Lichen Flora of the Greater Sonoran Desert Region (Tempe) 3: 58 (2007). Basionym: Arthonia gregaria var. speciosa Müll. Arg., Bot. Jb. 20: 286 (1894). Synonyms: Index Fungorum
Basionym: Arthonia gregaria var. speciosa Müll. Arg., Bot. Jb. 20: 286 (1894).
Synonyms: Index Fungorum