| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Burnthouse | Frederick Hamilton Davey | Frederick Hamilton Davey | 23/8/1903 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Crantock | George Claridge Druce | | 8/1908 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Gilly Tresamble | Catherine Muriel Rob Thomas Jackson Foggitt | Joseph Norman Frankland | 17/9/1926 | LIV |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Frederick Hamilton Davey Henry Elliott Fox | 30/8/1911 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey George Claridge Druce | 30/8/1911 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Frederick Hamilton Davey | 30/8/1911 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Loe Pool | Christopher Donald Pigott | | 8/1947 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Newquay | Joseph Edward Little | | 1903 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Perranarworthal | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 22/8/1935 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey | 19/9/1902 | CGE |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Spencer Henry Bickham | 23/8/1903 | CGE |
| 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 |