| Mentha arvensis x aquatica x spicata = M. x smithiana | VC17, Limpsfield | J Fraser | J Fraser | 27/8/1906 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | | | Carlisle Museum Herbarium Samuel Goodenough | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | | William Sole | Forsyth George Bentham | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | | | Forsyth George Bentham William Sole | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | Lijenne-migit | H Sua | Jacques Étienne Gay William Jackson Hooker | 1817 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | Upper Ouby | John Fraser John (Joannis) Fraser | John Durbin Gray | 7/1882 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Castallack, Lamorna | Richard Barker Ullman | Richard Barker Ullman | 1912 to 1913 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Goonbell Halt | Job Edward Lousley | Job Edward Lousley | 14/9/1936 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Gwennap | Frederick Hamilton Davey | Frederick Hamilton Davey | 30/8/1911 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Allan Octavian Hume Frederick Hamilton Davey | 30/8/1911 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Perranworthal, Tresamble | Job Edward Lousley | Job Edward Lousley | 14/9/1936 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Porkellis | Frederick Hamilton Davey | Watson Botanical Exchange Club Albert John Crosfield | 9/9/1907 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Porkellis | Frederick Hamilton Davey | Frederick Hamilton Davey | 9/9/1907 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Agnes | H Radcliffe | Edgar Thurston | 9/1912 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Columb Minor | Spencer Henry Bickham | Spencer Henry Bickham | 4/10/1904 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Columb Minor | Spencer Henry Bickham | Spencer Henry Bickham | 4/10/1904 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Columb Minor | Chambre Corker Vigurs | Botanical Exchange Club of The British Isles Chambre Corker Vigurs Charles Edward Britton | 1/9/1905 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Columb Minor | Chambre Corker Vigurs | | 1/9/1905 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Columb Minor | Chambre Corker Vigurs | Botanical Exchange Club of The British Isles David Fry William Hunt Painter | 1/9/1905 | ABS |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Columb Minor | Chambre Corker Vigurs | Chambre Corker Vigurs | 9/1905 | ABS |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Sennan | Frederick Robert Tennant | | 8/1899 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Sennen | Frederick Robert Tennant | | 8/1897 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Sennen Cove | William Curnow | | 9/1878 | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Sennen Cove | William Curnow | William Hunt Painter | 9/1878 | ABS |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Tresamble | Job Edward Lousley | Job Edward Lousley | 14/9/1936 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Wendron | Frederick Hamilton Davey | | 15/8/1900 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Wendron | Frederick Hamilton Davey | Allan Octavian Hume | 15/8/1900 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Wendron | Frederick Hamilton Davey | Allan Octavian Hume | 12/9/1907 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Wendron | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey | 9/9/1907 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Wendron | Frederick Hamilton Davey | Frederick Hamilton Davey | 9/9/1907 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC2 East Cornwall, Porthscatho | Christopher Donald Pigott | | 9/1947 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Cardale Babington | 30/8/1881 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Cardale Babington | 30/8/1881 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Harraton | Thomas Richard Archer Briggs | Allan Octavian Hume Frederick Townsend | 30/7/1878 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Honiton | George Thomas Harris | | 22/9/1927 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Kingskerswell | Francis Morland Day Thomas Stephenson | | 12/8/1940 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Otterton | Horace M Montford | | 19/9/1935 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Plymstock | Thomas Richard Archer Briggs | | 27/9/1876 | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Stoke Gabriel | Francis Morland Day | | 11/9/1938 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Totnes | Francis Morland Day | Job Edward Lousley Arthur Langford Still | 17/9/1938 | SLBI |