| Russula mariae Peck | D. R. Sumstine s.n. | 1903 | United States of America | Pennsylvania | Armstrong Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | W. R. Arde 267 | 14 Sep 1940 | United States of America | Pennsylvania | Philadelphia Co. Penn Valley, Philadelphia | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | V. S. E. White 31 | 18 Jul 1901 | United States of America | Maine | Hancock Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine | 12 Aug 1908 | United States of America | Pennsylvania | Fayette Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | J. M. Grant | Oct. 1931 | United States of America | Washington | Snohomish Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine | 15 Jul 1908 | United States of America | Pennsylvania | Crawford Co. Exposition Park | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | Ballou s.n. | July 5 | United States of America | New Jersey | Bergen Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine | 13 Sep 1940 | United States of America | Pennsylvania | Westmoreland Co. Near Saltsburg Kiski… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine s.n. | 08 Jul 1940 | United States of America | Pennsylvania | Westmoreland Co. Near Saltsburg Kiski… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine | 31 Jul 1941 | United States of America | Pennsylvania | Centre Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine | Aug 1919 | United States of America | Pennsylvania | Allegheny Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine s.n. | 05 Jul 1941 | United States of America | Pennsylvania | Bedford Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine | Jul 1903 | United States of America | Pennsylvania | Fayette Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine | 24 Aug 1909 | United States of America | Pennsylvania | Cambria Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | L. K. Henry 1030 | 21 Jun 1931 | United States of America | Pennsylvania | Westmoreland Co. Below South Greenburg's… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | M. B. Knauz | 14 Jul 1936 | United States of America | Pennsylvania | Centre Co. Near Agric. Bldg.,… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | H. S. Wieand | 28 Sep 1935 | United States of America | Pennsylvania | Butler Co. Buffalo Creek | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | H. S. Wieand | 02 Aug 1937 | United States of America | Pennsylvania | Venango Co. 1 mi. N.… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | M. B. Knauz | 10 Sep 1936 | United States of America | Pennsylvania | Allegheny Co. Mrs. Kellogg's yard… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | H. S. Wieand | 11 Jul 1937 | United States of America | Pennsylvania | Venango Co. 1 mi. N.… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | H. S. Wieand | 13 Aug 1935 | United States of America | Pennsylvania | Mercer Co. Karn's Farm, 5½… | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine | 08 Aug 1906 | United States of America | Pennsylvania | Westmoreland Co. | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | O. E. Jennings | 25 Sep 1937 | United States of America | Pennsylvania | Somerset Co. Near Buckstown | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | O. E. Jennings | 01 Sep 1927-03 Sep 1927 | United States of America | Pennsylvania | Westmoreland Co. Rock Run-Lynn Run-Rector | — |  |  |  |  | 
                       
                        
                            
                            
                                | Russula mariae Peck | D. R. Sumstine | 20 Jun 1937 | United States of America | Pennsylvania | Allegheny Co. Schenley Park | — |  |  |  |  |