| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH5 East Cork, South Bride | Thomas Wright | National Museum Ireland Alexander Goodman More | | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, Cork | | National Museum Ireland Alexander Goodman More | 9/1855 | 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, Killowen | Rosemary Fitzgerald | | 22/9/1991 | 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 | IE, VCH21 Co. Dublin, Rathfarnham | Robert Lloyd Praeger | Robert Lloyd Praeger | 9/1903 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH21 Co. Dublin, Rathfarnham | Robert Lloyd Praeger | Robert Lloyd Praeger | 9/1903 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH23 Westmeath, Kilcleagh Abbey | | National Museum Ireland Alexander Goodman More | 9/1855 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH38 Co. Down, Saintfield Cultivated | Coslett Herbert Waddell | Coslett Herbert Waddell | 9/1894 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | VC17, Limpsfield | J Fraser | J Fraser | 27/8/1906 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | | | Carlisle Museum Herbarium Samuel Goodenough | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | | William Sole | Forsyth George Bentham | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | | | Forsyth George Bentham William Sole | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | Lijenne-migit | H Sua | Jacques Étienne Gay William Jackson Hooker | 1817 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Porkellis | Frederick Hamilton Davey | Frederick Hamilton Davey | 9/9/1907 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Agnes | H Radcliffe | Edgar Thurston | 9/1912 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Saint Columb Minor | Chambre Corker Vigurs | Botanical Exchange Club of The British Isles Chambre Corker Vigurs Charles Edward Britton | 1/9/1905 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Tresamble | Job Edward Lousley | Job Edward Lousley | 14/9/1936 | 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, VC3 South Devon, Kingskerswell | Francis Morland Day Thomas Stephenson | | 12/8/1940 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Otterton | Horace M Montford | | 19/9/1935 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Stoke Gabriel | Francis Morland Day | | 11/9/1938 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC5 South Somerset, Hestercombe | Laurence Athelstan Molesworth Riley | Laurence Athelstan Molesworth Riley Riley | 4/10/1906 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC5 South Somerset, Kingston | Laurence Athelstan Molesworth Riley | Laurence Athelstan Molesworth Riley | 26/9/1906 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC6 North Somerset, Bath Cultivated | William Sole | Samuel Goodenough | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC6 North Somerset, Compton Dando | Henry Francois Devis | | 27/8/1916 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC6 North Somerset, Dundry | George Henry Kendrick Thwaites | George Lloyd | 8/1846 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC6 North Somerset, Dundry | George Henry Kendrick Thwaites | George Henry Kendrick Thwaites | 8/1846 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC6 North Somerset, Litton | Harold Stuart Thompson | Botanical Exchange Club of The British Isles | 12/8/1935 to 22/8/1935 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC6 North Somerset, Rowberrow | James Walter White | Charles Edward Britton | 23/8/1903 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC6 North Somerset, Rowberrow | James Walter White | | 29/9/1927 | K |
| 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, Somerset | William Sole | | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, Somerset | William Sole | Carlisle Museum Herbarium Samuel Goodenough | | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC7 North Wiltshire, Aldbourne | Emily Sophia Todd | J Fraser | 1/9/1927 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC10 Isle of Wight, Calbourne | | William Arnold Bromfield William Jackson Hooker | 2/9/1841 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC10 Isle of Wight, Luccombe Chine | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 27/8/1911 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC10 Isle of Wight, Shide | | E H Metcalf | | 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, VC12 North Hampshire, Fleet | G A R Watts | J Fraser | 10/9/1934 | K |