| Psathyrella hydrophila (Bull.) Maire | D. R. Sumstine 12510 | 02 Nov 1940 | United States of America | Pennsylvania | Butler Co. Zelienople | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | D. R. Sumstine 12510 | 05 Sep 1940 | United States of America | Pennsylvania | Somerset Co. Jennerstown | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | D. R. Sumstine 12510 | Sep 1940 | United States of America | Pennsylvania | Forest Co. Cook Forest [State… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | G. H. Sumstine 11472 | 31 Oct 1937 | United States of America | Pennsylvania | Allegheny Co. Near Allison Park | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | D. R. Sumstine 12510 | 05 Sep 1940 | United States of America | Pennsylvania | Somerset Co. Jennerstown | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | D. R. Sumstine 13669 | 16 Oct 1945 | United States of America | Pennsylvania | Allegheny Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | A. H. Smith HEB3 | 09 Oct 1951 | United States of America | Michigan | Washtenaw Co. Mud Lake Bog,… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | M. V. Thayer 594 | 22 Oct 1898 | United States of America | Massachusetts | Norfolk Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | H. Webster 446 | 17 Oct 1898 | United States of America | Massachusetts | Middlesex Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | E. A. Burt | 06 Sep 1897 | United States of America | Vermont | Addison Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | C. M. Hepner | 06 Oct 1933 | United States of America | Pennsylvania | Allegheny Co. 4 mi. E.… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | C. M. Hepner 12756 | 23 Aug 1932 | United States of America | Pennsylvania | Allegheny Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull.) Maire | M. B. Knauz 11818 | 01 Oct 1938 | United States of America | Pennsylvania | Allegheny Co. Squaw Run | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella gyroflexa (Fr.) G.Bertrand | F. K. A. E. J. von Thümen | 1873 | Czech Republic | — | Bohemia. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella gyroflexa (Fr.) G.Bertrand | F. K. A. E. J. von Thümen | 1873 | Czech Republic | — | Bohemia. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella gyroflexa (Fr.) G.Bertrand | C. Roumeguère | — | France | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella gyroflexa (Fr.) G.Bertrand | F. K. A. E. J. von Thümen | Jun 1875 | France | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella lacrymabunda (Bull. ex Fr.) Quél. | D. R. Sumstine | 15 Aug 1919 | United States of America | Pennsylvania | Allegheny Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella lacrymabunda (Bull. ex Fr.) Quél. | D. R. Sumstine | 06 Jul 1939 | United States of America | Pennsylvania | Allegheny Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella canoceps (Kauffman) A.H.Sm. | H. E. Bigelow 2003 | 15 Sep 1954 | United States of America | Washington | Mt. Rainier Nat. Park, Lower… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella subtilis Fr. | A. W. Eichler | — | Italy | Trentino-Alto Adige | Trento | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella hydrophila (Bull. ex Mérat) Maire | — | 10 Oct 1969 | Czech Republic | — | Bohemia. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella rigidipes (Peck) A.H.Sm. | K. H. McKnight F86 | 09 Jun 1949 | United States of America | Utah | Utah Co. By stream below… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella rigidipes (Peck) A.H.Sm. | F. S. Boughton | 29 Sep 1913 | United States of America | New York | Monroe Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Psathyrella rigidipes (Peck) A.H.Sm. | C. H. Peck | 02 Sep 1909 | United States of America | New York | Essex Co. North River | — |  |  |  |  |