| 
                                    Salix humilis var. tristis (Aiton) Griggs
                                 | 
                                C. W. Mulford s.n. | 
                                13 May 1904 | 
                                — | 
                                — | 
                                Hempstead Plains | 
                                — | 
                                 | 
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                                | 
                                    Salix humilis var. tristis (Aiton) Griggs
                                 | 
                                E. J. Palmer 24404 | 
                                15 Apr 1924 | 
                                United States of America | 
                                Missouri | 
                                Jasper Co. Near Joplin | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix humilis var. tristis (Aiton) Griggs
                                 | 
                                K. M. Wiegand 2082 | 
                                28 Apr 1911 - 19 Jun 1911 | 
                                United States of America | 
                                Massachusetts | 
                                Norfolk Co. East of Moose… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix humilis var. tristis (Aiton) Griggs
                                 | 
                                W. H. Leggett s.n. | 
                                14 May 1871 | 
                                United States of America | 
                                New York | 
                                Coney Island | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix humilis var. tristis (Aiton) Griggs
                                 | 
                                N. L. Britton s.n. | 
                                05 May 1888 | 
                                United States of America | 
                                New Jersey | 
                                Cumberland Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix humilis var. tristis (Aiton) Griggs
                                 | 
                                W. H. Horr E385 | 
                                04 Apr 1941 | 
                                United States of America | 
                                Kansas | 
                                Yates Center | 
                                — | 
                                 | 
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                                | 
                                    Salix humilis var. tristis (Aiton) Griggs
                                 | 
                                C. D. Mell s.n. | 
                                21 Apr 1903 | 
                                United States of America | 
                                Nebraska | 
                                Hershey | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                W. H. Leggett s.n. | 
                                14 May 1871 | 
                                United States of America | 
                                New York | 
                                Coney I[slan]d. [Horse] R.R. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                W. H. Leggett s.n. | 
                                14 May 1871 | 
                                United States of America | 
                                New York | 
                                Coney Island Horse R.R. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                C. C. Curtis s.n. | 
                                14 May 1904 | 
                                United States of America | 
                                New York | 
                                S.I. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                F. A. Mulford s.n. | 
                                21 Apr 1903 | 
                                — | 
                                — | 
                                Hempstead Plains | 
                                — | 
                                 | 
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                                | 
                                    Salix tristis Aiton
                                 | 
                                W. C. Ferguson 6661 | 
                                5-13-28 | 
                                United States of America | 
                                New York | 
                                Suffolk Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                W. C. Ferguson s.n. | 
                                5-25-20 | 
                                United States of America | 
                                New York | 
                                Nassau Co. Farmingdale, Long Island | 
                                — | 
                                 | 
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                                | 
                                    Salix tristis Aiton
                                 | 
                                W. C. Ferguson s.n. | 
                                5-16-19 | 
                                United States of America | 
                                New York | 
                                Nassau Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                G. T. Hastings s.n. | 
                                17 Apr 1890 | 
                                United States of America | 
                                New Jersey | 
                                N. Elizabeth | 
                                — | 
                                 | 
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                                | 
                                    Salix tristis Aiton
                                 | 
                                K. K. Mackenzie 1997 | 
                                20 May 1906 | 
                                United States of America | 
                                New Jersey | 
                                Middlesex Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                K. K. Mackenzie 3985 | 
                                16 May 1909 | 
                                United States of America | 
                                New Jersey | 
                                Middlesex Co. South River | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                K. K. Mackenzie 3985 | 
                                16 May 1909 | 
                                United States of America | 
                                New Jersey | 
                                Middlesex Co. South River | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Salix tristis Aiton
                                 | 
                                K. K. Mackenzie 3985 | 
                                16 May 1909 | 
                                United States of America | 
                                New Jersey | 
                                Middlesex Co. South River | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                K. K. Mackenzie 8252 | 
                                05 May 1918 | 
                                United States of America | 
                                New Jersey | 
                                Washington | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                | 
                                    Salix tristis Aiton
                                 | 
                                R. M. Harper 12 | 
                                06 Sep 1907 | 
                                United States of America | 
                                New York | 
                                Nassau Co. About 1 1/2… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Salix tristis Aiton
                                 | 
                                K. K. Mackenzie 6641 | 
                                Aug 1915 | 
                                United States of America | 
                                New Jersey | 
                                Highstown | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Salix tristis Aiton
                                 | 
                                W. C. Ferguson 6830 | 
                                7-9-28 | 
                                United States of America | 
                                New York | 
                                Suffolk Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Salix tristis Aiton
                                 | 
                                W. C. Ferguson 6425 | 
                                9-14-27 | 
                                United States of America | 
                                New York | 
                                Suffolk Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Salix tristis Aiton
                                 | 
                                W. C. Ferguson 7979 | 
                                9-15-28 | 
                                United States of America | 
                                New York | 
                                Suffolk Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
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                                 |