| Mentha aquatica x spicata = M. x piperita | GB, VC50 Denbighshire, Llangollen | M Hildred Bigwood | M Hildred Bigwood | 28/7/1954 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC50 Denbighshire, Rossett | Conrad Theodore Green | Conrad Theodore Green | 14/9/1895 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC51 Flintshire, River Alyn | Arthur Augustine Dallman | Arthur Augustine Dallman | 24/8/1906 | LIV |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Croydon Cultivated GB, VC57 Derbyshire | Arthur Bennett William Curnow | Arthur Bennett | 7/1874 to 8/1874 | LIV |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC57 Derbyshire | | | 9/1870 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC57 Derbyshire | Edward Francis Linton | Liverpool University | 22/9/1892 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC57 Derbyshire | A Steuart | | 8/1893 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC57 Derbyshire, Barton Blount | William Richardson Linton | | 30/6/1897 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC57 Derbyshire, Belper | William Richardson Linton | | 22/9/1892 | 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, VC58 Cheshire, Broxton | Robert Brown | | 28/9/1874 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Capenhurst | Robert Brown | | 11/9/1875 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Lymm | | C K Jones-Parry | 7/1943 | LIV |
| Mentha aquatica x spicata = M. x piperita var. crispa | GB, VC58 Cheshire, Oxton | Alban Edward Lomax | | 23/8/1886 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Poulton, Merseyside | Mary Henderson | | 7/1943 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Shotwick | R Brown | | 9/1884 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Sutton Weaver | | C K Jones-Parry | 8/1959 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Willaston (Wirral) | Robert Brown | | 9/9/1876 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Aintree | Vera Gordon | | 5/9/2000 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Eccleston | | | 12/9/1908 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Leyland | | | 9/1858 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Liverpool | Joseph Dickinson | Liverpool University Joseph Dickinson | 8/1839 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Ormskirk | | | 23/8/1862 | LIV |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC59 South Lancashire, Southport | Frederick William Holder | Joseph Norman Frankland | 21/9/1929 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Tarleton, Meanygate | Vera Gordon | Vera Gordon | 24/9/1966 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Wallasey Tunnel, Liverpool | Vera Gordon | | 30/9/1997 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Whalley | Vera Gordon | | 23/8/1964 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC60 West Lancashire, Fulwood, Near Preston, Lancashire | Eric Fairgrieve Greenwood | | 22/8/1957 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC60 West Lancashire, Goosnargh | E M Pearce | | 7/9/1968 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC60 West Lancashire, Lancaster | Alice E Ratcliffe | | 30/9/1966 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC60 West Lancashire, Lea | F C King | | 9/1888 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC60 West Lancashire, Mitton | M Partington | Liverpool University | 9/1955 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC60 West Lancashire, Woodplumpton | D Steeden J Steeden | | 4/9/1968 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, Lancashire | George Chadwick | | 7/1852 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC61 South-east Yorkshire, Elloughton GB, VC61 South-east Yorkshire, Welton | Charles Waterfall | Charles Waterfall | 9/1891 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC62 North-east Yorkshire, Haxby | Henry John Wilkinson | H Fisher | 9/1883 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC62 North-east Yorkshire, Haxby | Henry John Wilkinson | | 9/1883 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC64 Mid-west Yorkshire, Austwick | Joseph Norman Frankland | | 21/9/1922 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC64 Mid-west Yorkshire, Bashall Eves | M Partington | Liverpool University | 9/1955 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC64 Mid-west Yorkshire, Beckwithshaw | Edward Charles Wallace | Joseph Norman Frankland | 2/9/1940 | LIV |