| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH12 Co. Wexford, Killowen | Rosemary Fitzgerald | | 22/9/1991 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH12 Co. Wexford, Kildavin Bridge | Rosemary Fitzgerald | | 15/9/1991 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH12 Co. Wexford, Screen Hills | Nicholas F Stewart Rosemary Fitzgerald | | 14/9/1990 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC60 West Lancashire, River Lune | Eric Fairgrieve Greenwood | | 2/9/1989 | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC47 Montgomeryshire, Cilcewydd | Clifford Charles Townsend | | 8/9/1987 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC47 Montgomeryshire, Cilcewydd | Clifford Charles Townsend | | 8/9/1987 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC11 South Hampshire, Nursling | Raymond Paul Bowman | | 11/8/1981 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Nutfield | | | 21/12/1978 | SLBI |
| 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, VC13 West Sussex, Kingsham Wood, Borden | R W Rayner | | 4/8/1973 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, Kerry, Dingle | Michael Long | | 9/9/1969 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC38 Warwickshire, Studley | Neville J Pinfield | | 17/9/1959 | ABS |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Wandsworth | Charles Avery | Charles Avery | 3/8/1958 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Mitcham Common | Job Edward Lousley | Job Edward Lousley | 2/9/1956 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC19 North Essex, Abberton | Stanley Thomas Jermyn | | 9/1955 | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC60,VC69, Kirkby Londsdale | M Partington | Liverpool University | 9/1955 | LIV |
| 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, VC22 Berkshire, Blewbury | Francis Morland Day | | 7/9/1953 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC37,VC38, Astwood Bank | Clifford Charles Townsend | Clifford Charles Townsend | 5/9/1953 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Dorking | John Kenneth Morton | | 16/8/1953 | 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, 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, Sanderstead | Donald Peter Young | Donald Peter Young | 14/8/1951 | K |
| 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, VC43 Radnorshire, Michaelchurch on Arrow | Elisabeth Hore | | 9/1950 | K |
| Mentha gentilis var. wirtgeniana | GB, VC36 Herefordshire, Symonds Yat | Clifford Charles Townsend | Clifford Charles Townsend | 31/8/1950 | K |
| Mentha gentilis var. wirtgeniana | GB, VC36 Herefordshire, Symonds Yat | Clifford Charles Townsend | Clifford Charles Townsend | 31/8/1950 | K |
| 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 | Clifford Charles Townsend | Clifford Charles Townsend | 26/8/1950 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC15 East Kent, Hinxhill | Job Edward Lousley | Job Edward Lousley | 3/10/1948 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC15 East Kent, Hinxhill | Job Edward Lousley | Job Edward Lousley | 3/10/1948 | K |
| 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, VC36 Herefordshire, Dinedor | Francis Morland Day | | 5/9/1947 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC2 East Cornwall, Porthscatho | Christopher Donald Pigott | | 9/1947 | CGE |
| 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, VC17 Surrey, Leigh | D A J Little | | 29/8/1947 | ABS |
| 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, VC33 East Gloucestershire, Coates | Edgar Wolston Bertram Handsley Milne-Redhead | | 27/8/1945 | K |