| Mentha aquatica x spicata = M. x piperita | GB, VC31 Huntingdonshire, Huntingdon Cultivated | Edward Walter Hunnybun | Spencer Henry Bickham | 22/9/1908 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC34 West Gloucestershire, Mitcheldean | Augustin Ley | | 13/9/1877 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC36 Herefordshire, Ledbury | Spencer Henry Bickham | Spencer Henry Bickham | 28/9/1915 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC36 Herefordshire, Ledbury | Francis Morland Day | Arthur Langford Still | 29/8/1940 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Alfrick | Richard Francis Towndrow | Charles Cardale Babington | | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Wallington Cultivated GB, VC37 Worcestershire, Alfrick | Arthur Langford Still | Job Edward Lousley | 9/1940 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Hanley Castle | Richard Francis Towndrow | Spencer Henry Bickham | 10/9/1903 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Malvern | Alfred Rayney Waller | John Durbin Gray | 7/1884 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Old Storridge | Richard Francis Towndrow | Spencer Henry Bickham William Richardson Linton | 1/9/1902 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Old Storridge | Spencer Henry Bickham | Spencer Henry Bickham | 1/9/1902 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Old Storridge Common | James Henry Augustus Steuart | John Durbin Gray Robert Lloyd Praeger | 8/1892 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Balsall Common | Henry Bromwich | Charles Cardale Babington | 9/1871 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Balsall Common | Robert Large Baker | Botanical Exchange Club of The British Isles Charles Cardale Babington | 9/1880 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Balsall Common | Henry Bromwich | Botanical Exchange Club of The British Isles Charles Cardale Babington | 9/1880 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Balsall Common | Henry Bromwich | | 9/1871 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Brailes | Cecil Prescott Hurst George Claridge Druce | Joseph Edward Little | 1923 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Myton | Henry Bromwich | | 9/1871 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Warwick | Henry Bromwich | Charles Cardale Babington | 9/1877 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Warwick | John Fraser | John Durbin Gray | 10/9/1878 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC38 Warwickshire, Warwick | John Fraser | John Durbin Gray | 10/9/1878 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC40 Shropshire, Nobold | William Allport Leighton | Charles Cardale Babington | 4/9/1835 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC40 Shropshire, Nobold | William Allport Leighton | Charles Cardale Babington | 4/9/1835 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC40 Shropshire, Weston Lullingfields | John Eddowes Bowman | Charles Cardale Babington | | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC42 Breconshire, Llanwrtyd | R Lewis | | 4/8/1956 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC43 Radnorshire, Cwm Bettws Dinath | Franklyn Hugh Perring | | 10/8/1956 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC43 Radnorshire, Knighton | Franklyn Hugh Perring | | 5/8/1956 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC45 Pembrokeshire, Castlemartin | | Charles Cardale Babington | 6/9/1851 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC47 Montgomeryshire, Breidden Hill | Cambridge Botany Schppl Expedition, Wales | | 23/8/1955 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC47 Montgomeryshire, Glan Hafren | | Charles Cardale Babington | 8/1871 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC50 Denbighshire, Llangollen | Cambridge Botany Schppl Expedition, Wales | | 21/8/1955 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC50 Denbighshire, Llyn Moelfre | Cambridge Botany Schppl Expedition, Wales | | 23/8/1955 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Croydon Cultivated GB, VC57 Derbyshire | Arthur Bennett William Curnow | Charles Cardale Babington Arthur Bennett | 8/1878 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC57 Derbyshire | Stubbs | Charles Cardale Babington Elizabeth Anne Lomax | 8/1876 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Hale | Spencer Henry Bickham | Spencer Henry Bickham | 9/8/1868 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Hale | Spencer Henry Bickham | Spencer Henry Bickham | 9/8/1868 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Hale | Spencer Henry Bickham | Spencer Henry Bickham | 9/8/1868 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC58 Cheshire, Hale | Spencer Henry Bickham | Spencer Henry Bickham | 8/8/1868 | CGE |
| Mentha aquatica x spicata = M. x piperita var. crispa | GB, VC58 Cheshire, Oxton | Alban Edward Lomax | | 23/8/1886 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC59 South Lancashire, Warrington | William Wilson | John Stevens Henslow | 9/1825 to 9/1826 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC62 North-east Yorkshire, Robin Hood's Bay | Spencer Henry Bickham | Spencer Henry Bickham | 4/9/1905 | CGE |