| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Wendron | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey | 9/9/1907 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Sennen | Frederick Robert Tennant | | 8/1897 | 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, VC41 Glamorganshire, Gileston | Beverley Alan Miles | Beverley Alan Miles | 11/9/1954 | 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, VC14 East Sussex, Lewes | James Herbert Augustus Jenner | James Herbert Augustus Jenner | 24/8/1877 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Columb Minor | Chambre Corker Vigurs | | 1/9/1905 | 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, VC1 West Cornwall, Wendron | Frederick Hamilton Davey | Frederick Hamilton Davey | 9/9/1907 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Gwennap | Frederick Hamilton Davey | Frederick Hamilton Davey | 30/8/1911 | 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, VC29 Cambridgeshire, Bourn | Cyril West | | 9/1948 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Sennan | Frederick Robert Tennant | | 8/1899 | 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, VC29 Cambridgeshire, Gamlingay | Frederick Robert Tennant | | | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Alfold | S A | Croydon Natural History and Scientific Society Arthur Bennett | 8/1884 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Woking | S A | Croydon Natural History and Scientific Society Arthur Bennett | 8/1883 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Guildford | S A | Croydon Natural History and Scientific Society Arthur Bennett | 8/1884 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Alfold | Arthur Bennett | Croydon Natural History and Scientific Society | 8/1884 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | Upper Ouby | John Fraser John (Joannis) Fraser | John Durbin Gray | 7/1882 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC10 Isle of Wight, Newbridge | James Henry Augustus Steuart | John Durbin Gray | 9/1894 | CGE |
| 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, VC58 Cheshire, Birkenhead | | Conrad Theodore Green | 1817 | LIV |
| 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, VC14 East Sussex, Laughton | William Edward Nicholson | Arthur George Gregor William Edward Nicholson | 1/8/1914 | K |
| 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, VC6 North Somerset, Pensford | Henry Haselfoot Haines | | 6/8/1938 | ABS |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC37 Worcestershire, Worcester | Albert John Hambrough | Allan Octavian Hume Frederick Townsend | 8/1843 | SLBI |
| 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, VC13 West Sussex, Kingsham Wood, Borden | R W Rayner | | 4/8/1973 | 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, VC3 South Devon, Honiton | George Thomas Harris | | 22/9/1927 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC9 Dorset, Silton | W Herridge | University of Exeter | 1916 | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC43 Radnorshire, Michaelchurch on Arrow | Elisabeth Hore | | 9/1950 | K |
| 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, Somerset | William Hudson William Sole | Carlisle Museum Herbarium Samuel Goodenough | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC10 Isle of Wight, Totland | Bolton King | Charlotte Ellen Palmer | 8/1893 | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC10 Isle of Wight, Totland,Lacy's Farm | Bolton King | Botanical Exchange Club of The British Isles Charlotte Ellen Palmer | 8/1893 | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC10 Isle of Wight, Totland,Lacy's Farm | Bolton King | Botanical Exchange Club of The British Isles Charlotte Ellen Palmer | 8/1893 | CGE |