| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Bovey Tracey | Todd | | 1920 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Brixham | Francis Morland Day | | 29/8/1935 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Brixham | Francis Morland Day | | 5/8/1938 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Brixham | Francis Morland Day | | 13/8/1938 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Brixham | Francis Morland Day | | 17/8/1938 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Brixham | Francis Morland Day | J Fraser | 1/9/1934 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Buckfastleigh | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Buckfastleigh | Arthur Langford Still | Harold Stuart Thompson | 20/8/1935 | BIRM |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Chudleigh Knighton | Francis Morland Day | | 18/9/1937 | K |
+ | Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Common Wood | Thomas Richard Archer Briggs | Charles Bailey | 4/9/1867 | MANCH |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Diptford | Thomas Richard Archer Briggs | Charles Cardale Babington | 18/8/1881 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Exeter | George Claridge Druce | | 8/1908 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Ivybridge | Thomas Richard Archer Briggs | | 15/9/1877 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Lustleigh | Francis Morland Day | | 22/8/1939 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Marldon | Francis Morland Day | | 3/8/1937 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Meavy | William Booth Waterfall | Charles Cardale Babington | 25/7/1878 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Meavy | William Booth Waterfall | | 15/7/1878 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Meavy | William Booth Waterfall | Arthur Langford Still Harold Stuart Thompson | 7/1878 | BIRM |
+ | Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Plym Valley | Thomas Richard Archer Briggs | Charles Bailey | 23/8/1867 | MANCH |
+ | Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, River Avon at Aveton Gifford | Edward Shearburn Marshall | | 1894 | BIRM |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Salcombe Cultivated | Herbert William Pugsley | Herbert William Pugsley | 17/9/1936 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Staverton | | University of Exeter | 6/8/1935 | LIV |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Teignmouth | | | 13/9/1954 | CGE |
| Mentha gentilis var. gracilis | GB, VC3 South Devon, Torcross | Francis Druce | | 17/9/1927 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Walkhampton | Cyril West | | 8/1947 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Walkhampton | Cyril West | | 8/1947 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Walkhampton | Cyril West | | 8/1947 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Widdecombe | Francis Morland Day | | 17/8/1937 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Woodleigh | Joseph Woods | Frederick Townsend | 26/9/1843 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Yalberton | Francis Morland Day | | 11/8/1937 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC4 North Devon, Belstone | | | 9/1904 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC4 North Devon, Lynmouth | Spencer Henry Bickham | Spencer Henry Bickham | 18/9/1902 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC4 North Devon, Tiverton | Arthur Langford Still | John Richard Wallis | 12/5/1941 | SLBI |
| Mentha gentilis var. gracilis | GB, Devon, Tiverton | Emily Sophia Todd | Job Edward Lousley | | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC5 South Somerset, Cutcombe | G Amherst | | 14/9/1928 | OXF |
+ | Mentha arvensis x spicata = M. x gracilis | GB, VC5 South Somerset, Oake | F Lang | Watson Botanical Exchange Club Bailey Frederick Ernest Weiss | 20/8/1919 | MANCH |
| Mentha arvensis x spicata = M. x gracilis | GB, VC6 North Somerset, Bath Cultivated | William Sole | | | K |
| Mentha gentilis var. gracilis | GB, VC6 North Somerset, Bath Cultivated | William Sole | Samuel Goodenough | | K |
| Mentha gentilis var. gracilis | GB, VC6 North Somerset, Bath Cultivated | William Sole | Samuel Goodenough Carlisle Museum Herbarium | | K |
| Mentha gentilis var. gracilis | GB, VC6 North Somerset, Bath Cultivated | William Sole | Samuel Goodenough Carlisle Museum Herbarium | | K |