| 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, VC20 Hertfordshire, Northaw | Spencer Henry Bickham | Spencer Henry Bickham | 16/9/1915 | CGE |
| 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 | GB, VC20 Hertfordshire, Northaw | 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 | 20/9/1918 | CGE |
| 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, VC6 North Somerset, Priddy | Ida Mary Roper | Ida Mary Roper | 22/9/1918 | LIV |
| 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, 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 Cultivated | Spencer Henry Bickham | Watson Botanical Exchange Club Albert Bruce Jackson | 22/9/1918 | K |
| 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, VC17 Surrey, Richmond Cultivated | Albert Bruce Jackson | Albert Bruce Jackson | 8/1920 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Charles Edgar Salmon | Charles Edgar Salmon | 9/1925 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Richmond | J Fraser | J Fraser | 12/6/1926 4/9/1926 | K |
+ | Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC20 Hertfordshire, Northaw | Douglas Montague Heath | | 22/9/1926 | BIRM |
| 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, Colley Hill | Arthur Reginald Horwood | | 21/9/1928 | K |
| 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 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, 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, VC36 Herefordshire, Ledbury | Spencer Henry Bickham | Druce Herbarium, Oxford Spencer Henry Bickham | 9/1931 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC36 Herefordshire, Ledbury | Spencer Henry Bickham | Botanical Exchange Club of The British Isles J Fraser Spencer Henry Bickham | 9/1931 | K |
+ | 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, VC17 Surrey, Chiddingfold | Edward Charles Wallace | Edward Charles Wallace | 9/1933 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Edward Charles Wallace | Watson Botanical Exchange Club Edward Charles Wallace J Fraser | 10/9/1933 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC34 West Gloucestershire, Bristol,Long Ashton | B O Mulligan | J Fraser | 12/9/1933 | K |
| 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, VC17 Surrey, Chiddingfold | Job Edward Lousley | Botanical Exchange Club of The British Isles | 30/9/1933 | 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, VC17 Surrey, Chiddingfold | Arthur Langford Still | | 23/9/1934 | BIRM |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Herbert Stanley Redgrove | Herbert Stanley Redgrove | 21/9/1935 | K |
| 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 | Arthur Langford Still | Joseph Norman Frankland | 5/9/1937 | LIV |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC3 South Devon, Kingskerswell Cultivated | Thomas Stephenson | | 8/1940 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC1 West Cornwall, Paul | Cyril West | | 9/1948 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC1 West Cornwall, Paul | Cyril West | | 9/1948 | CGE |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Kew Gardens Cultivated | | George Joiner | 18/5/1949 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Kew Gardens Cultivated | | George Joiner | 15/8/1957 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC6 North Somerset, Frome Cultivated | Peter Francis Hunt | | 28/8/1959 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, Wiltshire | T D Harrison | | 9/1976 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, Wiltshire | T D Harrison | | 21/9/1976 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC14 East Sussex, Hastings | Kenneth Emerson Bull | | 9/1989 | K |