| Mentha aquatica x spicata = M. x piperita | | R W B | | 1783 | LIV |
| Mentha aquatica x spicata = M. x piperita | | L B G | | 9/1814 | LIV |
| Mentha aquatica x spicata = M. x piperita | | | Druce Herbarium, Oxford | | OXF |
| Mentha aquatica x spicata = M. x piperita | | | Henry Bidwell | 8/1842 | OXF |
| Mentha aquatica x spicata = M. x piperita | | Octavius Corder | C E Robinson | | SLBI |
| Mentha aquatica x spicata = M. x piperita | | | J Dickinson | | LIV |
| Mentha aquatica x spicata = M. x piperita | | | Liverpool University Joseph Dickinson | | LIV |
| Mentha aquatica x spicata = M. x piperita | | | Botanical Exchange Club of The British Isles George Claridge Druce | | CGE |
| Mentha aquatica x spicata = M. x piperita | Cultivated | James Walter White | Druce Herbarium, Oxford Edward Walter Hunnybun J Fraser | | OXF |
| Mentha aquatica x spicata = M. x piperita | | | John Harriman William Sole | | LIV |
| Mentha aquatica x spicata = M. x piperita | | | Allan Octavian Hume Frederick Townsend | | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Bissoe | Frederick Hamilton Davey | Allan Octavian Hume | 14/9/1900 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Bissoe | Frederick Hamilton Davey | Allan Octavian Hume | 6/9/1900 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Carbis Bay | William Curnow | | 9/1878 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | Spencer Henry Bickham | Spencer Henry Bickham | 6/10/1904 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | Spencer Henry Bickham | Spencer Henry Bickham | 6/10/1904 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | Spencer Henry Bickham | Spencer Henry Bickham | 5/10/1904 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | George Claridge Druce | George Claridge Druce | 8/1908 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | George Claridge Druce | | 8/1908 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | George Claridge Druce | | 8/1908 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | Chambre Corker Vigurs | | 8/1903 to 1905 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | Allan Octavian Hume | Allan Octavian Hume | 31/8/1901 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | Allan Octavian Hume | Allan Octavian Hume | 31/8/1901 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | Allan Octavian Hume | Allan Octavian Hume | 31/8/1901 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | Allan Octavian Hume | Allan Octavian Hume | 31/8/1901 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Cubert | Job Edward Lousley | Job Edward Lousley | 19/9/1936 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Goonhavern | Chambre Corker Vigurs | Frederick Hamilton Davey | 1/9/1912 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Goonhavern | Chambre Corker Vigurs | Watson Botanical Exchange Club Joseph Edward Little Frederick Hamilton Davey | 9/1912 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Goonhavern | Chambre Corker Vigurs | | 1/9/1912 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Gwennap | Frederick Hamilton Davey Spencer Henry Bickham | Spencer Henry Bickham | 1/10/1904 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Gwennap | Cyril West | | 9/1948 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Hea Moor | Job Edward Lousley | Job Edward Lousley | 17/9/1936 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Helston | James Cunnack | William Hadden Beeby | 8/1878 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Helston | James Cunnack | Botanical Exchange Club of The British Isles John Durbin Gray | 9/1881 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Helston | John Ralfs | Charles Cardale Babington | 26/8/1878 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Cyril West | | 9/1946 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Cyril West | | 9/1948 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Lamorna Cove | William Curnow | William Hunt Painter | 9/1880 | ABS |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Lizard | James Cunnack | Charles Cardale Babington | 7/1878 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Lizard Cultivated | William Curnow | | | OXF |