| Mentha aquatica x spicata = M. x piperita | GB, VC29 Cambridgeshire, Barrington | William Williamson Newbould | | 9/9/1856 | CGE |
| Mentha aquatica x spicata = M. x piperita var. officinalis | GB, VC19 North Essex, Great Leighs | William Peete | John Stevens Henslow | 4/9/1828 | 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 | GB, VC1 West Cornwall, Helston | John Ralfs | Charles Cardale Babington | 26/8/1878 | CGE |
| Mentha aquatica x spicata = M. x piperita var. crispa | GB, Northumberland | | Lucy M Rickards | | 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, VC27 East Norfolk, Whitwell | Kirby Trimmer | The British Museum Watson Botanical Exchange Club Arthur Bennett Charles Edgar Salmon | 28/8/1883 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw | Charles Edgar Salmon | Charles Edgar Salmon | 9/1914 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC5 South Somerset, Minehead | Henry Oxley Stephens | | 1841 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Goonhavern | Chambre Corker Vigurs | | 1/9/1912 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC65 North-west Yorkshire, Richmond | James Ward | John Stevens Henslow | 9/9/1831 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC65 North-west Yorkshire, Aske Wood | James Ward | | 9/9/1835 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Weston in Gordano | James Walter White | Watson Botanical Exchange Club Joseph Edward Little | 4/8/1924 to 5/9/1924 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Weston in Gordano | James Walter White | Watson Botanical Exchange Club Spencer Henry Bickham | 5/9/1924 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Priddy | James Walter White | Spencer Henry Bickham | 16/9/1908 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Priddy Nine Barrows | James Walter White | | 16/9/1908 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Mendip Hills | James Walter White | | 16/9/1908 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Priddy-on-Mendip | James Walter White | Spencer Henry Bickham | 24/9/1925 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Weston in Gordano | James Walter White | Botanical Exchange Club of The British Isles Joseph Edward Little | 4/10/1923 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Mendip Hills | James Walter White | | 16/9/1908 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Priddy | James Walter White | Botanical Society & Exchange Club of The British Isles Joseph Edward Little | 24/9/1925 | 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 arvensis x aquatica = M. x verticillata | GB, Kent, Maidstone | | | 8/1865 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC38 Warwickshire, Honiley | Henry Bromwich | Botanical Exchange Club Charles Cardale Babington | 8/1878 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC40 Shropshire, Shrewsbury | | Botanical Society & Exchange Club of The British Isles Joseph Edward Little | 24/8/1917 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Yelverton | Cyril West | | 8/1947 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC83 Midlothian, Banlaw | Robert Stephen Adamson | Botanical Society & Exchange Club of The British Isles Joseph Edward Little | 26/8/1913 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Claverton Wood | | Charles Cardale Babington | 9/1833 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Cardale Babington | 7/9/1877 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC40 Shropshire, Oxon Pool | William Allport Leighton | Charles Cardale Babington | 6/8/1835 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, Carkeel | Thomas Richard Archer Briggs | Charles Cardale Babington | 19/9/1873 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC34 West Gloucestershire, Hangerberry Hill | William Henry Purchas | Charles Cardale Babington | 9/1845 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Bath | Charles Cardale Babington | John Stevens Henslow | 9/1833 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | | | Charles Cardale Babington | | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC49 Caernarvonshire, Llanberis | | Charles Cardale Babington | 31/8/1847 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | IE, Kerry, Killarney | | Charles Cardale Babington | 9/6/1836 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, Kent, Maidstone | Frederic Barham | Charles Cardale Babington | 8/1848 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC36 Herefordshire, Backney | William Henry Purchas | Charles Cardale Babington | 9/1849 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC33 East Gloucestershire, Wyck Rissington | | Charles Cardale Babington | 8/1833 | CGE |