| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC15 East Kent, Faversham | Edward Shearburn Marshall | | 1/9/1894 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC16 West Kent, Cowden | Edward Shearburn Marshall | | 28/8/1909 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Friday Street | Cyril West | | 9/1950 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Nutfield Marsh | Edward Charles Wallace | Edward Charles Wallace | 31/8/1929 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Sanderstead | | Botanical Society of The British Isles Donald Peter Young | 14/8/1951 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Woking | William Borrer | Charles Cardale Babington | | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Woking | William Borrer | Charles Cardale Babington | 8/1842 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC19 North Essex, Little Maplestead | George Claridge Druce | Botanical Exchange Club of The British Isles Spencer Henry Bickham | 8/1905 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC19 North Essex, Mersea Island | George Charles Brown | | 9/1912 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC28 West Norfolk, Castle Acre Cultivated | Frederick Long | Watson Botanical Exchange Club | 9/1911 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC28 West Norfolk, Heacham | Robert Heath Lock | Robert Heath Lock | 8/1901 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Bourn | Cyril West | | 9/1948 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Bourn | Cyril West | | 9/1948 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Bourn | Albert John Crosfield | Albert John Crosfield Arthur Bennett Charles Edgar Salmon Edward Shearburn Marshall | 30/9/1916 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Bourn | Albert John Crosfield | Watson Botanical Exchange Club Arthur Bennett Charles Edgar Salmon | 30/9/1916 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Gamlingay | Frederick Robert Tennant | | 7/1900 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Gamlingay | Frederick Robert Tennant | | | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Compton Abdale | Harry Joseph Riddelsdell | Botanical Society & Exchange Club of The British Isles Charles Edgar Salmon George Claridge Druce Joseph Edward Little | 11/9/1919 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Compton Abdale | Harry Joseph Riddelsdell | | 11/9/1919 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Wyck Rissington | | Charles Cardale Babington | 15/8/1833 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC34 West Gloucestershire, Henbury | Fenton John Anthony Hort | Charles Cardale Babington | 20/9/1850 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Great Doward | Augustin Ley | | 24/7/1897 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Great Doward | Augustin Ley | | 20/9/1902 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Hereford | Augustin Ley | Botanical Exchange Club of The British Isles | 16/9/1899 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Howle Hill Cultivated | Augustin Ley | | 11/9/1876 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Ross | Augustin Ley | Watson Botanical Exchange Club | 29/9/1910 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Ross | Augustin Ley | Botanical Exchange Club of The British Isles | 31/8/1905 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC40 Shropshire, River Severn at Eaton Constantine | William Edmund Beckwith | Arthur Bennett | 1882 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC41 Glamorganshire, Gileston | Beverley Alan Miles | Beverley Alan Miles | 11/9/1954 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC43 Radnorshire, Erwood | William Charles Barton | Watson Botanical Exchange Club J Fraser William Charles Barton | 6/9/1920 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC47 Montgomeryshire, Glan Hafren | | Charles Cardale Babington | 8/1871 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC58 Cheshire, Newchurch | William Wilson | John Stevens Henslow | 11/1826 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC64 Mid-west Yorkshire, Ripon | Samuel Hailstone | John Stevens Henslow | | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC64 Mid-west Yorkshire, Settle | George Crozier | Spencer Henry Bickham | 1841 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC64 Mid-west Yorkshire, Settle | John Howson | John Stevens Henslow | 8/1833 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC64 Mid-west Yorkshire, Settle | John Howson | John Stevens Henslow | 8/1833 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC72 Dumfriesshire, Jardine Hall | | Charles Cardale Babington | 15/9/1842 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC81 Berwickshire, River Whiteadder | | Charles Cardale Babington | 19/8/1834 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC89 East Perthshire, Tayside | George Claridge Druce | Botanical Exchange Club of The British Isles George Claridge Druce | 8/1911 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH4 Mid Cork, River Bride IE, VCH4,VCH5, County Cork | Isaac Carroll | Charles Cardale Babington | 9/1855 | CGE |