Homotypic Synonyms See Note

Basionym Name:
Parmelia stygia var. orbicularis Schaer., Lich. helv. spicil. 11: 544 (1842)

Homotypic synonyms:
Collema orbiculare (Schaer.) Tonglet, Bull. Soc. R. Bot. Belg. 37(no. 1): 20 (1898)
Collema stygium var. orbiculare (Schaer.) Rabenh., Deutschl. Krypt.-Fl. (Leipzig) 2(1): 54 (1845)
Lathagrium orbiculare (Schaer.) Arnold, Flora, Regensburg 50: 135, tab. III, fig. 69-72 (1867)
Lathagrium orbiculare f. orbiculare (Schaer.) Arnold, Flora, Regensburg 50: 135, tab. III, fig. 69-72 (1867)
Lathagrium orbiculare var. orbiculare (Schaer.) Arnold, Flora, Regensburg 50: 135, tab. III, fig. 69-72 (1867)
Lathagrium polycarpon subsp. orbiculare (Schaer.) Arnold, Flora, Regensburg 68(8): 169 (1885)
Synechoblastus orbicularis (Schaer.) Dalla Torre & Sarnth., Fl. Tirol, Vorarlberg, Liechtenstein, IV Band. Die Flechten von Tirol: 575 (1902)