Name requested: Postia undosaMycotaxon 52 (1): 27, 37. 53: 445. Persoonia 11 (4): 424.
Homotypic synonym: Tyromyces undosusMycologia 63 (4): 732. Mycotaxon 7 (2): 356. 12 (2): 392, 409. 19: 142. 23: 195.
Homotypic synonym: Polyporus undosusMycologia 9 (3): 133. 53 (5): 485. Mycotaxon 12 (2): 392. 22 (2): 365. Persoonia 11 (4): 424.
Homotypic synonym: Oligoporus undosusMycotaxon 22 (2): 365. 33: 275. 82: 230.