| Mentha aquatica x spicata = M. x piperita | IE, VCH21 Co. Dublin, Rathfarnham | | | 7/1893 | DBN |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Eccleston | | | 12/9/1908 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC88 Mid Perthshire, Glen Lyon | | | 1891 | LIV |
| Mentha aquatica x spicata = M. x piperita | IE, VCH39 Co. Antrim, Carmoney Church | | | 1846 | DBN |
| Mentha aquatica x spicata = M. x piperita | IE, VCH39 Co. Antrim, Carmoney Hill | | | 1865 | DBN |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Ormskirk | | | 23/8/1862 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Mitcham | | | 1840 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC57 Derbyshire, Darley Moor | | | 3/9/1891 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC20 Hertfordshire, Radlett | | | 9/1935 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC79 Selkirkshire, Ovenscloss | | | 20/8/1983 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC103 Mid Ebudes, Mull, Salen | | | 2/9/1983 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC79 Selkirkshire, Glenkinnon Burn | | | 20/8/1983 | K |
| Mentha aquatica x spicata = M. x piperita | GB, Yorkshire | | | 7/1933 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC64 Mid-west Yorkshire, Cookridge | William Arthur Sledge | Botanical Exchange Club of The British Isles William Arthur Sledge | 26/9/1928 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Chiddingfold | Rowland John Burdon | Botanical Society & Exchange Club of The British Isles Job Edward Lousley | 19/9/1930 | SLBI |
| Mentha x piperita | GB, VC37 Worcestershire, Alfrick Cultivated | Job Edward Lousley | Botanical Society & Exchange Club of The British Isles | 19/8/1934 | K |
| Mentha x piperita | GB, VC17 Surrey, Wallington Cultivated GB, VC6 North Somerset, Weston in Gordano | Arthur Langford Still | Botanical Society & Exchange Club of The British Isles | 8/1937 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC64 Mid-west Yorkshire, Acomb | R Spence | Botanical Society of Edinburgh George Cheetham Churchill | 8/1841 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC83 Midlothian, Crookston | John Thomas Irvine Boswell-Syme | Botanical Society of London | 9/1848 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Mitcham | | British Museum (Natural History) C E Sage | 20/8/1924 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC40 Shropshire, Dovaston | | Croydon Natural History and Scientific Society Henry Franklin Parsons | 13/9/1884 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC98 Argyllshire, Ballachulish | Edmund Frederic Warburg | Druce Herbarium, Oxford Edmund Frederic Warburg | 28/8/1947 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Sutton Cultivated | Edward Charles Wallace | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford | 9/1937 | OXF |
| Mentha aquatica x spicata = M. x piperita | | | Druce Herbarium, Oxford | | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Kidderminster | Richard Charles L'Estrange Burges | Druce Herbarium, Oxford | 1936 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Wroxton | Richard Charles Palmer | Druce Herbarium, Oxford | 29/8/1964 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC20 Hertfordshire, Waterford Marsh | John Ansell | Druce Herbarium, Oxford | 22/8/1846 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Mixbury | Richard Charles Palmer | Druce Herbarium, Oxford | 4/9/1963 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC32 Northamptonshire, Duston | George Claridge Druce | Druce Herbarium, Oxford | 9/1876 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC78 Peeblesshire, Kittlegairy Hill | Charles Bailey | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford | 27/9/1898 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Risinghurst | Richard Charles Palmer | Druce Herbarium, Oxford | 27/8/1968 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC40 Shropshire, Clun Church | Richard Charles Palmer | Druce Herbarium, Oxford | 4/9/1951 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC19 North Essex, Peldon | George Charles Brown Herbert Stanley Redgrove | Druce Herbarium, Oxford | 30/8/1923 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, Cornwall | Todd | Druce Herbarium, Oxford | 1920 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Woodstock | George Claridge Druce | Druce Herbarium, Oxford | | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC88 Mid Perthshire, Fortingall | Edmund Frederic Warburg | Druce Herbarium, Oxford | 2/9/1947 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC57 Derbyshire, Bradford Dale | H J Killick | Druce Herbarium, Oxford | 28/8/1999 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Brackley | Richard Charles Palmer | Druce Herbarium, Oxford | 4/9/1963 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC22 Berkshire, Didcot | Richard Charles Palmer | Druce Herbarium, Oxford | 8/8/1998 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC98 Argyllshire, Ballachulish | Edmund Frederic Warburg | Druce Herbarium, Oxford | 28/8/1947 | OXF |