Name requested: Umbilicaria polyphyllaLichenologist 3 (1): 150. 12 (1): 101. Lichens of North America null: 699, 703, 706, 707, 761. Mycotaxon 34 (1): 45. 35 (2): 424. 58: 223. 74 (2): 438, 444. 97: 55.
Homotypic synonym: Lichen polyphyllusLichenologist 12 (1): 36.
Homotypic synonym: Gyrophora polyphyllaLichenologist 3 (1): 150. 12 (1): 101. Mycologia 11 (6): 301. Mycotaxon 49: 8.