| Mentha aquatica x spicata = M. x piperita var. citrata | | | Carlisle Museum Herbarium Samuel Goodenough | | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC36 Herefordshire, Ledbury Cultivated | Spencer Henry Bickham | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford Spencer Henry Bickham | 20/9/1918 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw Cultivated | Spencer Henry Bickham | Druce Herbarium, Oxford Henry Elliott Fox Spencer Henry Bickham | 22/9/1918 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC68 North Northumberland, Hedgehope Hill | W Fampton | Druce Herbarium, Oxford William Wilson Saunders Dawes Cholmeley Russell | | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Edmund Browne Bishop | Druce Herbarium, Oxford | | OXF |
| 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, VC45 Pembrokeshire, Castlemartin | | Charles Cardale Babington | 6/9/1851 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Kew Gardens Cultivated | John Gilbert Baker | Charles Cardale Babington John Gilbert Baker | 9/1868 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Kew Gardens Cultivated | John Gilbert Baker | | 9/1868 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | Cultivated | Esprit Requien | George Bentham | 1831 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | | George Bentham | George Bentham | 1832 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw | Spencer Henry Bickham | | 20/9/1918 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw Cultivated | Spencer Henry Bickham | Spencer Henry Bickham | 13/9/1913 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw GB, VC36 Herefordshire, Ledbury Cultivated | Spencer Henry Bickham | Watson Botanical Exchange Club Spencer Henry Bickham | 13/9/1913 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw | Spencer Henry Bickham | Spencer Henry Bickham | 16/9/1915 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw | Spencer Henry Bickham | Spencer Henry Bickham | 13/9/1913 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw | Spencer Henry Bickham | Spencer Henry Bickham | 22/9/1918 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw | Spencer Henry Bickham | Spencer Henry Bickham | 20/9/1918 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw | Spencer Henry Bickham | Spencer Henry Bickham | 13/9/1913 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | North Wales | William Peete | Spencer Henry Bickham | 1844 | CGE |
+ | Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC36 Herefordshire, Ledbury | Spencer Henry Bickham | | 9/1931 | BIRM |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC36 Herefordshire, Ledbury | Spencer Henry Bickham | Botanical Exchange Club of The British Isles Spencer Henry Bickham | 9/1931 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC36 Herefordshire, Ledbury | Charles Edward Britton Spencer Henry Bickham | Botanical Exchange Club of The British Isles Spencer Henry Bickham | 9/1931 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw Cultivated | Spencer Henry Bickham | Watson Botanical Exchange Club Albert Bruce Jackson | 22/9/1918 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | Cultivated | Edward Walter Hunnybun | Spencer Henry Bickham | 1917 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | | | William John Blake | | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC23 Oxfordshire, Shotover Hill | | Henry Boswell | 9/1861 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC14 East Sussex, Hastings | Kenneth Emerson Bull | | 9/1989 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Rowland John Burdon | Botanical Exchange Club of The British Isles | 19/9/1930 | K |
| 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 var. citrata | GB, VC1 West Cornwall, Lamorna | William Curnow | | 8/1879 | CGE |
| 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, VC1 West Cornwall, Lamorna | William Curnow | | 8/1879 | BIRM |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw Cultivated | Charles Edgar Salmon | Charles Edgar Salmon George Claridge Druce | 9/1914 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | George Claridge Druce | George Claridge Druce | 5/1920 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Roydon | George Claridge Druce | | 9/1915 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Sanderstead | Job Edward Lousley | Job Edward Lousley | 4/9/1927 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | | | 2/8/1936 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Job Edward Lousley | | 30/9/1933 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC57 Derbyshire | | | 9/1870 | LIV |