| 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 x verticillata var. rivalis | GB, VC3 South Devon, Drewsteignton | Francis Morland Day | | 10/8/1937 | K |
| 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 |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Newton Poppleford | William Bertram Turrill | | 24/9/1955 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Newton Poppleford | William Bertram Turrill | | 24/9/1955 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Plymbridge | Thomas Richard Archer Briggs | Augustin Ley | 23/8/1877 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, River Tavy | Thomas Richard Archer Briggs | Augustin Ley | 30/8/1875 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Scabbacombe | F Day | | 11/9/1934 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Slapton | Henry Herbert Harvey | Henry Herbert Harvey | 20/8/1926 | K |
| Mentha x verticillata var. rivalis | GB, VC3 South Devon, Stoke Gabriel | Francis Morland Day | | 2/9/1937 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Widecombe in the Moor | Francis Morland Day | | 17/8/1937 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Widecombe in the Moor | Francis Morland Day | | 23/8/1938 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Yelverton | Cyril West | | 8/1947 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Yelverton | Cyril West | | 8/1947 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Yelverton | Cyril West | | 8/1948 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Yelverton | Cyril West | | 8/1948 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Yelverton | Cyril West | | 8/1947 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Yelverton | Cyril West | | 8/1947 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC4 North Devon, Belstone | Arthur Langford Still | University of Exeter | 29/7/1937 | LIV |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC4 North Devon, Belstone | | University of Exeter | 12/7/1937 | LIV |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC4 North Devon, Bishops Tawton | Edgar Wolston Bertram Handsley Milne-Redhead | | 16/8/1949 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC4 North Devon, Great Torrington | Augustin Ley | Augustin Ley | 18/9/1882 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC4 North Devon, Lynmouth Cultivated | | | | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC4 North Devon, South Molton | Augustin Ley | Augustin Ley | 19/9/1882 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC4 North Devon, Sticklepath | | University of Exeter | 9/7/1937 | LIV |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Bicknoller | M D Ker | | 27/8/1936 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Bossington GB, VC5 South Somerset, West Monkton Cultivated | Edward Shearburn Marshall | Harold Stuart Thompson | 27/8/1915 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Bossington on Sea Cultivated | Spencer Henry Bickham | Augustin Ley Spencer Henry Bickham | 20/8/1909 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Chard Reservoir | John Keyloch | | 10/8/1990 | K |