Name requested: Lichen orbicularisLichenologist 16 (3): 223. Mycotaxon 7 (2): 312. 8 (1): 308, 309, 310, 316.
Homotypic synonym: Physcia orbicularisLichenologist 3 (1): 139. 3 (3): 322, 322. 4 (1): 12. 12 (1): 76. Mycologia 56 (4): 618. 65 (1): 196. 69 (4): 673. Mycotaxon 5 (1): 300, 301, 302, 304, 305. 7 (2): 284, 293, 294. 8 (1): 308, 316. 26: 256, 258, 259, 261. 34 (1): 44. 40: 245, 247.
Homotypic synonym: Phaeophyscia orbicularisLichenologist 12 (1): 76, 76, 76. Lichens of North America null: 539, 542, 543, 560. Mycologia 78 (1): 95. Mycotaxon 7 (2): 293, 294, 297, 306, 312, 316, 317. 8 (1): 310, 316. 50: 328. 60: 421. 61: 125, 133, 143. 97: 54. 99: 202. 102: 130. 104: 257, 285. 105: 97, 98, 99, 100, 102, 103.
Heterotypic synonym: Lichen virellusLichenologist 3 (3): 322.
Heterotypic synonym: Physcia obscuraMycologia 9 (3): 152. Mycotaxon 40: 245, 247.
Heterotypic synonym: Physcia virellaLichenologist 3 (1): 139. 3 (3): 322. 12 (1): 76. Mycotaxon 35 (2): 423.
Heterotypic synonym: Physcia orbicularis var. virellaLichenologist 4 (1): 12.
Heterotypic synonym: Physcia orbicularis forma cycloselisSydowia 14 (1-6): 324.