Name requested: Umbilicaria proboscideaLichenologist 3 (1): 151, 151, 151, 151. 12 (1): 101, 101, 101, 101. Lichens of North America null: 12, 698, 702, 703, 704, 707. Mycotaxon 35 (2): 385, 388. 48: 259, 265, 266. 53: 107. 58: 223. 74 (2): 438, 444.
Homotypic synonym: Gyrophora proboscideaLichenologist 3 (1): 151. 12 (1): 101. Mycologia 11 (6): 301.