| 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 | 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, VC38 Warwickshire, Warwick | Robert Large Baker | Liverpool University | 9/1880 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Blakedown | Job Edward Lousley | Reading University Job Edward Lousley | 19/9/1937 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC85 Fifeshire, Lundin Links | Alexander Somerville | Royal Botanic Garden, Edinburgh Alexander Somerville | 29/8/1890 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Kew Gardens Cultivated | Prosper Marsden | Royal Botanical Gardens, Kew | 16/7/1889 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC83 Midlothian, Loganbank | | University of Exeter | 13/10/1934 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC83 Midlothian, Haughhead | | University of Exeter | 29/9/1934 | LIV |
| Mentha aquatica x spicata = M. x piperita | | R W B | | 1783 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC78 Peeblesshire, Peebles | Charles Bailey | Botanical Exchange Club of The British Isles Charles Bailey | 27/9/1898 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Chiddingfold | William Hadden Beeby | | 21/8/1885 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Croydon Cultivated | Arthur Bennett | | 1886 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, Cornwall GB, VC17 Surrey, Croydon Cultivated | Arthur Bennett | Botanical Exchange Club of The British Isles | | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC36 Herefordshire, Ledbury Cultivated | Spencer Henry Bickham | Spencer Henry Bickham | 20/8/1909 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC50 Denbighshire, Llangollen | M Hildred Bigwood | | 4/9/1955 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC50 Denbighshire, Llangollen | M Hildred Bigwood | | 4/9/1955 | 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, Capenhurst | Robert Brown | | 11/9/1875 | 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, Willaston (Wirral) | Robert Brown | | 9/9/1876 | LIV |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Arthur H Carter | Job Edward Lousley | 17/9/1934 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, Lancashire | George Chadwick | | 7/1852 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Saint Ives | William Curnow | | 8/1878 | 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 | GB, VC1 West Cornwall, Praa Sands | William Curnow | | 9/1878 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Penzance | William Curnow | | 9/1878 | 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 | | | J Dickinson | | LIV |
| Mentha aquatica x spicata = M. x piperita var. crispa | | | Liverpool University Joseph Dickinson | | 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, VC88 Mid Perthshire, Glen Farg | Joseph Dickinson | Liverpool University Joseph Dickinson | 1834 | LIV |
| Mentha aquatica x spicata = M. x piperita | | | Liverpool University Joseph Dickinson | | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC20 Hertfordshire, Northaw GB, VC36 Herefordshire, Ledbury Cultivated | Spencer Henry Bickham | George Claridge Druce | 20/10/1918 | 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, VC37 Worcestershire, Alfrick | Thomas Jackson Foggitt | Catherine Muriel Rob Joseph Norman Frankland | 11/9/1926 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC65 North-west Yorkshire, River Lune | T W Newton | | 8/8/1999 | LIV |
| Mentha aquatica x spicata = M. x piperita | GB, VC50 Denbighshire, Llangollen | M Hildred Bigwood | M Hildred Bigwood | 28/7/1954 | LIV |