| Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | H. E. Bigelow 14392 | 20 Jun 1965 | United States of America | Massachusetts | Franklin Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | L. K. Henry 5117 | 19 Jun 1942 | United States of America | Pennsylvania | Butler Co. 4 mi. NE… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 1886 | 30 Jun 1980 | United States of America | Idaho | Valley Co. A-frame, Millers, McCall | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 8281 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 9490 | 21 Jul 1973 | United States of America | Montana | Columbia Falls | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 15001 | 19 Aug 1975 | United States of America | Idaho | Valley Co. Hank Shank lawn,… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 17467 | 21 Aug 1978 | Finland | — | Botanical Gardens, Helinski | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 18989 | 03 Aug 1980 | United States of America | Idaho | Valley Co. Garrisons Pool, McCall | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 19102 | 09 Sep 1980 | — | — | in pass on Bosnia-Herzegovina Rd… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 19680 | 20 Oct 1981 | United States of America | Washington | Ocean City State Park, near… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 19900 | 09 Jul 1982 | United States of America | Idaho | Idaho Co. Chinook Campground, Warren | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 21473 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 23279 | 12 Mar 1989 | United States of America | California | Trinity Co. Salyer | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 23645 | 14 May 1989 | Australia | Western Australia | Currie Hall, W. Australia Campus,… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 24701 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller 28039 | 24 Jul 2002 | United States of America | Idaho | Valley Co. lawn of Lowell… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Panaeolus foenisecii (Pers. & Fr.) J.Schröt. | O. K. Miller s.n. | — | — | — |  | — |  |  |  |  |