| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Risinghurst | Richard Charles Palmer | Druce Herbarium, Oxford | 27/8/1968 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Shotover | George Claridge Druce | Druce Herbarium, Oxford | 30/9/1887 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Shotover | | Oxford University Herbarium | 30/9/1887 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Shotover | George Claridge Druce | | 9/1885 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Shotover | George Claridge Druce | George Claridge Druce J Fraser | 9/1885 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC23 Oxfordshire, Shotover | George Claridge Druce | Druce Herbarium, Oxford J Fraser | 9/1888 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC23 Oxfordshire, Shotover Hill | | Henry Boswell | 9/1861 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Stonesfield | William H Holliday | | 27/9/1861 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, Weston on the Green | George Claridge Druce | | 8/1913 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC23 Oxfordshire, Wigginton | George Claridge Druce | George Claridge Druce | 9/1916 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, Wolvercote | George Claridge Druce | Druce Herbarium, Oxford | 9/1912 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Wolvercote | George Claridge Druce | George Claridge Druce | 1896 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Woodstock | George Claridge Druce | Druce Herbarium, Oxford | | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Woodstock | William H Holliday | | 9/1861 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Wroxton | Richard Charles Palmer | Druce Herbarium, Oxford | 29/8/1964 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC22,VC23, Clanfield | Richard Charles Palmer | | 4/9/1970 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC22,VC23, Oxford | F Gambier Parry | George Claridge Druce | 9/1916 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC24 Buckinghamshire, Brickhill | George Claridge Druce | George Claridge Druce | 8/1902 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC24 Buckinghamshire, Ellesborough | George Claridge Druce | George Claridge Druce | 9/1896 to 9/1897 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC24 Buckinghamshire, Ellesborough | Frances Louisa Foord-Kelcey | | 8/1911 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC24 Buckinghamshire, High Wycombe | George Claridge Druce | | 1897 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC24 Buckinghamshire, Westbury | George Claridge Druce | George Claridge Druce | 9/1902 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC26 West Suffolk, Chevington | Joseph Edward Little | Joseph Edward Little | 21/9/1912 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC27 East Norfolk, Banningham | Kirby Trimmer | Druce Herbarium, Oxford | 8/1859 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC27 East Norfolk, Banningham | Kirby Trimmer | | 8/1859 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC27 East Norfolk, Burgh Saint Margaret | Rowland John Burdon | | 25/8/1926 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Catfield | Kirby Trimmer | | 8/1859 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Catfield | Kirby Trimmer | | 8/1859 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC27 East Norfolk, Fersfield | Kirby Trimmer | Oxford University Herbarium | 8/1859 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC27 East Norfolk, Fersfield | Kirby Trimmer | | 8/1859 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC27 East Norfolk, Filby | George Claridge Druce | | 8/1904 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC27 East Norfolk, Foulsham | Kirby Trimmer | | 8/1866 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC27 East Norfolk, Foulsham | Kirby Trimmer | | 27/8/1866 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Heigham | Kirby Trimmer | | 9/1862 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Heigham Sound | Kirby Trimmer | | 9/1861 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC27 East Norfolk, Hemblington | Kirby Trimmer | Oxford University Herbarium | 8/1861 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC27 East Norfolk, Horstead | Kirby Trimmer | | 8/1849 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC27 East Norfolk, Letheringsett | Kirby Trimmer | | 7/1858 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Limpenhoe | Kirby Trimmer | | 9/1863 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Norwich, Heigham | Kirby Trimmer | | 9/1862 | OXF |