| Helvella leucomelaena (Pers.) Nannf. | R. T. Orr 1963 | 13 Jul 1969 | United States of America | Idaho | Valley Co. Payette Nat. Forest. | — |  |  |   |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | C. T. Rogerson s.n. | 29 Jul 1992 | United States of America | Utah | Duchesne Co. Avintaquin Campground, Ashley… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | C. T. Rogerson s.n. | 16 Aug 1992 | United States of America | Nevada | White Pine Co. South Fork… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | C. T. Rogerson s.n. | 11 Jul 1993 | United States of America | Utah | Garfield Co. Lonesome Beaver Campground,… | — |  |  |   |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | B. Bomanz 118 | 29 Mar 2006 | United States of America | Missouri | Saint Louis Co. 909 Woodside… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | O. K. Miller 28546 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | O. K. Miller 28553 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | O. K. Miller 7505 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | O. K. Miller 6434 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | O. K. Miller 7234 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | O. K. Miller 8569 | — | — | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | — | — | — | — |  | — |  |  |   |  | 
                       
                        
                            
                            
                                | Helvella leucomelaena (Pers.) Nannf. | — | — | — | — |  | — |  |  |   |  |