| Mentha spicata x suaveolens = M. x villosa | GB, VC17 Surrey, Kew Cultivated GB, VC93 North Aberdeenshire, New Aberdour | J Fraser | | 12/8/1933 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC17 Surrey, Kew Cultivated GB, VC93 North Aberdeenshire, New Aberdour | J Fraser | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford J Fraser | 10/8/1934 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Kew Gardens Cultivated | John Gilbert Baker | | 9/1868 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Kew Gardens | John Gilbert Baker | | 8/1866 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Leith Hill | Edward Charles Wallace | Botanical Society & Exchange Club of The British Isles Druce Herbarium, Oxford Edward Charles Wallace | 6/8/1934 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Pyrford | George Claridge Druce | | 1920 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Pyrford Rough | | George Claridge Druce | 1918 | 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 arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Sanderstead | | Botanical Society of The British Isles Donald Peter Young | 14/8/1951 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Shalford | Edward Charles Wallace | Edward Charles Wallace | 2/9/1933 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Shalford Pond | Rowland John Burdon | Botanical Society & Exchange Club of The British Isles | 5/9/1933 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Sutton Cultivated | Edward Charles Wallace | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford | 9/1937 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Virginia Water | | | | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Wallington Cultivated GB, VC20 Hertfordshire, Roydon | Arthur Langford Still | Botanical Exchange Club of The British Isles | 6/9/1936 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Wallington Cultivated GB, VC6 North Somerset, Weston in Gordano | Arthur Langford Still | | 8/1937 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Wallington Cultivated | Arthur Langford Still | | 8/1926 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Woking | J Fraser | J Fraser | 23/8/1925 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Woking | J Fraser | J Fraser | 15/8/1926 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC19 North Essex, Alphamstone Cultivated | George Charles Brown | George Claridge Druce | 1/9/1920 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC19 North Essex, Alphamstone Cultivated | George Charles Brown | Druce Herbarium, Oxford J Fraser | 7/9/1916 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC19 North Essex, Colchester | George Charles Brown | Botanical Exchange Club of The British Isles | 9/8/1925 16/8/1925 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC19 North Essex, Great Henny | John Bury Higgens | Druce Herbarium, Oxford | 10/1916 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC19 North Essex, Little Maplestead | George Claridge Druce | George Claridge Druce | 9/1922 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC19 North Essex, Maplestead | George Claridge Druce | Druce Herbarium, Oxford | 8/1905 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC19 North Essex, Middleton | George Claridge Druce | | 9/1915 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC19 North Essex, Peldon | George Charles Brown Herbert Stanley Redgrove | Druce Herbarium, Oxford | 30/8/1923 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC19 North Essex, Twinstead | George Claridge Druce | George Claridge Druce | 9/1915 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC20 Hertfordshire, Bayford | | Druce Herbarium, Oxford | | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC20 Hertfordshire, Bengeo | William Higgins Coleman | Druce Herbarium, Oxford | 30/9/1843 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC20 Hertfordshire, Harpenden Cultivated | Harry Joseph Riddelsdell | Arthur Langford Still Harry Joseph Riddelsdell | 8/1938 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC20 Hertfordshire, Hertford | John Bury Higgens | Druce Herbarium, Oxford | 1912 | 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, 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 Cultivated | Charles Edgar Salmon | Charles Edgar Salmon George Claridge Druce | 9/1914 | 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 | GB, VC20 Hertfordshire, Roydon | William Higgins Coleman | Druce Herbarium, Oxford J Fraser | 4/10/1843 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC20 Hertfordshire, Stevenage | William Higgins Coleman | George Claridge Druce | 2/9/1846 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC20 Hertfordshire, Waterford | John Ansell | Druce Herbarium, Oxford | 5/8/1846 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC20 Hertfordshire, Waterford Marsh | John Ansell | Druce Herbarium, Oxford | 22/8/1846 | OXF |