| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey Spencer Henry Bickham | Spencer Henry Bickham | 1/10/1904 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Ponsanooth | | Frederick Hamilton Davey | 19/9/1902 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Allan Octavian Hume | 23/8/1899 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Allan Octavian Hume | 23/8/1899 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Porkellis | Frederick Hamilton Davey | Watson Botanical Exchange Club Albert Bruce Jackson Frederick Hamilton Davey | 9/9/1907 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Saint Gluvias | Frederick Hamilton Davey | Allan Octavian Hume | 29/8/1900 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Saint Ives | William Curnow | Druce Herbarium, Oxford | 9/1878 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Davidstow | Chambre Corker Vigurs | George Claridge Druce | 29/9/1906 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Davidstow | Chambre Corker Vigurs | Chambre Corker Vigurs | 9/1902 | ABS |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Davidstow | Chambre Corker Vigurs | | 29/9/1906 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Davidstow | Chambre Corker Vigurs | Allan Octavian Hume | 7/10/1902 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Hatt | Thomas Richard Archer Briggs | | 4/9/1877 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Hatt, Botus Fleming | Thomas Richard Archer Briggs | | 12/9/1876 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Hatt, Botusfleming | Thomas Richard Archer Briggs | | 12/9/1876 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Liskeard | Todd | Todd George Claridge Druce | 1920 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Looe | | Druce Herbarium, Oxford George Claridge Druce J Fraser | | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Looe | Arthur Langford Still | | 8/1906 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Saint Gennis | Frederick Hamilton Davey | Allan Octavian Hume | 29/8/1900 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Tregawne, Withiel | Richard Vercoe Tellam | Druce Herbarium, Oxford | | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, treglasta | | | 29/9/1906 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, treglasta | Chambre Corker Vigurs | Botanical Exchange Club of The British Isles | 29/9/1906 | LIV |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Trewether | Allan Octavian Hume | Allan Octavian Hume | 1/8/1901 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Aveton Gifford | Thomas Richard Archer Briggs | Charles Cardale Babington | 5/8/1880 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Aveton Gifford | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 21/8/1935 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Aveton Gifford | Edward Shearburn Marshall | | 4/9/1894 | LIV |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Aveton Gifford | Edward Shearburn Marshall | | 17/7/1894 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Aveton Gifford | Edward Shearburn Marshall | | 1894 | LIV |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Aveton Gifford Cultivated | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles William Hunt Painter | 3/9/1895 | ABS |
| Mentha arvensis x spicata = M. x gracilis | GB, VC3 South Devon, Aveton Gifford Cultivated | Edward Shearburn Marshall | Allan Octavian Hume Frederick Townsend | 4/9/1894 | SLBI |
| 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 | | 5/8/1938 | K |
| 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 | | 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 |