| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC21 Middlesex, Feltham | Richards | A G Leighton Ltd Ministry of Agriculture & Fisheries | 29/10/1924 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC21 Middlesex, Harefield | Francis Morland Day | | 5/8/1942 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC21 Middlesex, Mill Hill | | | | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC21 Middlesex, Pinner | Charles Baylis Green | Charles Baylis Green | 9/9/1908 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC22 Berkshire, Blewbury | Francis Morland Day | | 7/9/1953 | K |
+ | Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC23 Oxfordshire, Shotover | Henry Boswell | John Bland Wood | 12/9/1861 | MANCH |
| 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 | Job Edward Lousley | Job Edward Lousley | 19/8/1934 | SLBI |
| 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, Coates | Edgar Wolston Bertram Handsley Milne-Redhead | | 27/8/1945 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Coates | Edgar Wolston Bertram Handsley Milne-Redhead | | 27/8/1945 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Compton Abdale | John Patrick Micklethwait Brenan | | 10/4/1936 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Compton Abdale | Francis Morland Day | | 21/8/1937 | K |
| 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 | Job Edward Lousley | Job Edward Lousley | 24/8/1935 | SLBI |
| 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, Compton Abdale | Harry Joseph Riddelsdell | | 11/9/1919 | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Compton Abdale | | Clifford Charles Townsend | 26/8/1950 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Compton Abdale Cultivated | Clifford Charles Townsend | Clifford Charles Townsend | 1952 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Compton Abdale | Clifford Charles Townsend | Clifford Charles Townsend | 26/8/1950 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC33 East Gloucestershire, Stroud, Slad Valley | Edgar Wolston Bertram Handsley Milne-Redhead Sonia C. Holland | | 7/9/1978 | K |
| 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, Golden Valley | Cecil Ivry Sandwith Noel Yvri Sandwith | | 11/9/1933 | K |
| 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, VC34 West Gloucestershire, Lydney | Herbert Kenneth Airy Shaw | | 29/8/1945 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC34 West Gloucestershire, Lydney | Herbert Kenneth Airy Shaw | | 29/8/1945 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC34 West Gloucestershire, Symonds Yat | Edgar Wolston Bertram Handsley Milne-Redhead Noel Yvri Sandwith | J Fraser | 13/8/1933 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, Gloucestershire, Severn Bank | | John (Joannis) Fraser | 9/1878 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Kew Cultivated GB, VC6,VC34, Bristol | | | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC35 Monmouthshire, Kymin Hill | Samuel George Charles | National Museum of Wales | 9/1934 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Colwall | Francis Morland Day | | 10/1934 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Colwall | Francis Morland Day | | 30/8/1947 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Dinedor | Francis Morland Day | | 5/9/1947 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC36 Herefordshire, Great Doward | Augustin Ley | | 24/7/1897 | CGE |