| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Perranarworthal | John Kenneth Morton | John Kenneth Morton | 27/9/1962 | K |
+ | Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Saint Ives | Charles Bailey | Charles Bailey | 6/10/1886 | MANCH |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Sennen | William Curnow | | 9/1878 | LIV |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Skewjack Moor, Land's End | Richard Barker Ullman | Richard Barker Ullman | 1912 1913 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Stithians | Frederick Hamilton Davey | Allan Octavian Hume | 27/8/1900 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Treen | William Bertram Turrill | | 26/7/1932 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Treen | William Bertram Turrill | | 26/7/1932 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Trewoofe | Richard Barker Ullman | Richard Barker Ullman | 30/8/1929 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Ventongimps | Francis Rilstone | Botanical Exchange Club of The British Isles | 16/9/1935 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Antony | Thomas Richard Archer Briggs | Augustin Ley | 17/8/1872 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Boscastle | Robert Desmond Meikle | | 16/9/1948 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Boscastle | Edgar Thurston | Edgar Thurston | 23/8/1915 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Carkeel | Thomas Richard Archer Briggs | Charles Cardale Babington | 19/9/1873 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Carkees | Thomas Richard Archer Briggs | Augustin Ley | 19/8/1873 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, East Looe | Allan Octavian Hume | Allan Octavian Hume | 3/9/1900 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Hatt, Botusfleming | Thomas Richard Archer Briggs | Augustin Ley | 12/9/1876 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Hessenford | Allan Octavian Hume | Allan Octavian Hume | 30/8/1900 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Liskeard, Moorswater | Allan Octavian Hume | Allan Octavian Hume | 8/8/1900 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Liskeard, Moorswater | Allan Octavian Hume | Allan Octavian Hume | 8/8/1900 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Liskeard, Moorswater | Allan Octavian Hume | Allan Octavian Hume | 8/8/1900 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Par | Laurence T Medlin | Edgar Thurston | 8/1930 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Saint Mellion | Thomas Richard Archer Briggs | | 4/9/1877 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Seaton | Edgar Thurston | Edgar Thurston | 13/9/1919 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, West Looe | Allan Octavian Hume | Allan Octavian Hume | 28/8/1900 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, West Looe | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 28/8/1900 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Bere Ferrers | Cyril West | | 8/1957 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Bovey Tracey | Francis Morland Day | | 16/9/1937 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Bovey Tracey | Wilson Crosfield Worsdell | George Valentine Chapman Last | 8/1924 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Branscombe | Charles Henry Wright | | 12/9/1938 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Branscombe | Charles Henry Wright | Charles Henry Wright | 12/9/1938 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Brixham | Francis Morland Day | | 12/8/1935 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Brixham | Francis Morland Day | | 11/9/1934 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Brixham | Francis Morland Day | | 20/8/1935 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Brixham | Francis Morland Day | | 13/8/1938 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Dawlish | | | 20/9/1937 | LIV |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Cardale Babington | 7/9/1877 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Augustin Ley | 7/9/1877 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Exeter | William Robert Sherrin | William Robert Sherrin | 1918 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Great Torrington | Edgar Wolston Bertram Handsley Milne-Redhead | | 17/8/1948 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, New Bridge | Gordon Travers Fraser | Clara Ethelinda Larter | 21/8/1934 | K |