| Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | M. S. Gibbons s.n. | 30 Jun 1942 | United States of America | California | Fresno Co. Badger Flat | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | Collector unspecified s.n. | s.d. | — | — | Sierra Nevada | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | H. W. Harkness s.n. | s.d. | United States of America | California | Sierra Navada. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | H. W. Harkness s.n. | s.d. | United States of America | California | Sierra Navada. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | M. S. Gibbons s.n. | 29 Jun 1942 | United States of America | California | Fresno Co. Huntington Lake | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | M. S. Gibbons s.n. | 29 Jun 1942 | United States of America | California | Fresno Co. Huntington Lake | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | H. W. Harkness s.n. | s.d. | United States of America | California | Sierra Nevada Mts. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | H. W. Harkness s.n. | s.d. | — | — |  | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | H. W. Harkness s.n. | s.d. | United States of America | California | Sierra Nevada Mts | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | H. W. Harkness s.n. | s.d. | United States of America | California | Sierra Nevada Mts. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | W. B. Cooke 8568 | 09 Jul 1937 | United States of America | California | Siskiyou Co. Along the Wagon… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | W. B. Cooke 14633A | 08 Jul 1940 | United States of America | California | Siskiyou Co. Mount Shasta | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | E. Morse s.n. | 1927 | United States of America | California | General Grant National Park | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | P. F. Shope s.n. | 17 Jun 1935 | United States of America | Colorado | Near Monarch Pass. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | Collector unspecified s.n. | 28 Nov 1909 | — | — |  | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | J. L. Lowe 6875 | 07 Sep 1956 | United States of America | Idaho | Nez Perce National Forest. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | G. G. Hedgcock s.n. | 07 Aug 1911 | United States of America | Idaho | North of Bonanza. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | R. L. Gilbertson 4582 | 13 Jul 1964 | United States of America | Montana | Jewel Basin, Swan Range, Flathead… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | s.n. | 21 Aug 1911 | United States of America | Montana | Neihart. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | C. F. Baker s.n. | 15 Aug 1902 | United States of America | Nevada | Marlette Lake. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | A. S. Rhoads 3 | 15 May 1945 | United States of America | Utah | San Juan Co. Natural Bridges… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | K. H. McKnight s.n. | 21 Jul 1952 | United States of America | Utah | Below Upper Falls, Provo River,… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | J. L. Lowe 8004 | 17 Aug 1957 | United States of America | Washington | Obstruction Peak, Olympic National Park. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | E. Nelson 2236 | 07 Jul 1896 | United States of America | Wyoming | Sundance Mt. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | Collector unspecified 237 | Aug. 1-3, 1929 | United States of America | Wyoming | University of Wyoming Summer Camp. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | A. Nelson 4237 | 17 Aug 1897 | United States of America | Wyoming | Battle Lake | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 24327 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 25659 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 25619 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 24337 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 25680 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 25586 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 24391 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 25625 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 25585 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 26989 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | 1548 | 23 Jun 1991 | United States of America | Idaho | Payette Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 27739 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 26638 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | O. K. Miller 27738 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | E. Bethel s.n. | 17 Jun 1897 | United States of America | Colorado |  | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | E. Bethel 59 | Mar 1897 | United States of America | Colorado |  | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | L. Bonar s.n. | 31 Aug 1940 | United States of America | California | High Sierra region Echo Lake,… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | E. E. Morse s.n. | Autumn, 1926 | United States of America | California | Tuolumne Co. Tuolumne Meadows, Yosemite… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | E. E. Morse 334 | Autumn, 1926 | United States of America | California | Tuolumne Co. Tuolumne Meadows, Yosemite… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | E. E. Morse s.n. | Autumn 1926 | United States of America | California | Tuolumne Co. Tuolumne Meadows, Yosemite… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | E. E. Morse 334 | Autumn 1926 | United States of America | California | Tuolumne Meadows, Yosemite Nat. Park | — |  |  |  |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | R. E. Halling 6183 | 03 Jun 1989 | United States of America | California | Sierra Co. Hwy 49 at… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | R. E. Halling 6466 | 07 Jun 1990 | United States of America | California | Sierra Co. Webber Lake Road… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Oligoporus leucospongia (Cooke & Harkn.) Gilb. & Ryvarden | C. T. Rogerson s.n. | 20 Aug 1986 | United States of America | Utah | Cache Co. Headwaters of Curtis… | — |  |  |   |  |