| 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 |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Southwood | Kirby Trimmer | | 6/1861 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Southwood | Kirby Trimmer | | 9/1859 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Southwood | Kirby Trimmer | | 1861 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Southwood | Kirby Trimmer | | 6/1861 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Sprowston | Kirby Trimmer | | 8/1858 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC27 East Norfolk, Sprowston | Edward Francis Linton | Druce Herbarium, Oxford Edward Francis Linton Henry Elliott Fox | 1/10/1888 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC27 East Norfolk, Swannington | Kirby Trimmer | | 8/1864 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC27 East Norfolk, Swannington | Kirby Trimmer | | 8/1864 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC27 East Norfolk, Thorpe Episcopi | Kirby Trimmer | | 8/1849 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC27 East Norfolk, Thurgarton | Kirby Trimmer | Oxford University Herbarium | 8/1857 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Tibenham | Kirby Trimmer | | 9/1858 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, West Runton | Mason | George Claridge Druce | 23/8/1899 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC28 West Norfolk, Billingford | Kirby Trimmer | Druce Herbarium, Oxford | 11/1868 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC28 West Norfolk, Blo Norton | Kirby Trimmer | | 8/1867 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC28 West Norfolk, Dersingham | Eric Lister Swann | | 31/8/1950 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC28 West Norfolk, Harling | Edward Francis Linton | Edward Francis Linton | 3/10/1888 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC28 West Norfolk, Harling | Edward Francis Linton | Edward Francis Linton | 3/10/1888 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC28 West Norfolk, Harling | T Peace | | 8/1932 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC28 West Norfolk, Hockham | Frederick Robinson | Botanical Society & Exchange Club of The British Isles | 14/7/1921 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC28 West Norfolk, Holme Hale | Kirby Trimmer | | 10/1867 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC28 West Norfolk, Holme Hale | Kirby Trimmer | Oxford University Herbarium | 7/1863 | OXF |
| Mentha suaveolens x longifolia = M. x rotundifolia var. webberi | GB, VC28 West Norfolk, Marham | Frederick Robinson | | 27/8/1921 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC28 West Norfolk, Roydon Common | Eric Lister Swann | Botanical Society of The British Isles Eric Lister Swann | 29/8/1950 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC28 West Norfolk, Roydon Common | Eric Lister Swann | Eric Lister Swann | 29/8/1950 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC28 West Norfolk, South Creake | | | 7/8/1901 | OXF |
| Mentha rubra | GB, VC28 West Norfolk, Watton | | George Claridge Druce | 1918 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC28 West Norfolk, Woodrising | Kirby Trimmer | | 9/1850 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC28 West Norfolk, Yaxham | Kirby Trimmer | | 8/1866 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, Norfolk Cultivated | John Thomas Irvine Boswell-Syme | | 9/1870 | OXF |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, Norfolk | Kirby Trimmer | Frederic Stratton John Thomas Irvine Boswell-Syme | 1869 | OXF |