| Mentha arvensis x spicata = M. x gracilis | GB, VC83 Midlothian, Musselburgh | John Hutton Balfour | | | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC93 North Aberdeenshire, Fyvie | F Turreff | | 7/1927 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC5 South Somerset, Minehead | Isabella Gifford | | 1866 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Crantock | Chambre Corker Vigurs | | 8/1903 to 1905 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey George Claridge Druce | 30/8/1911 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Pengersick Castle | James Cunnack | Druce Herbarium, Oxford | 8/1878 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC1 West Cornwall, Penzance | William Curnow | Druce Herbarium, Oxford | 9/1878 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Saint Columb Minor GB, VC36 Herefordshire, Ledbury Cultivated | Spencer Henry Bickham | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford Spencer Henry Bickham | 21/8/1908 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Saint Columb Minor Cultivated | Spencer Henry Bickham | Watson Botanical Exchange Club Spencer Henry Bickham | 21/8/1908 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Saint Ives | William Curnow | Druce Herbarium, Oxford | 9/1878 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Liskeard | Todd | Todd George Claridge Druce | 1920 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Looe | | Druce Herbarium, Oxford George Claridge Druce J Fraser | | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Tregawne, Withiel | Richard Vercoe Tellam | Druce Herbarium, Oxford | | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC3 South Devon, Plymbridge | Thomas Richard Archer Briggs | Druce Herbarium, Oxford J Fraser | 23/8/1877 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC3 South Devon, Sidmouth | | Druce Herbarium, Oxford J Fraser | 8/1904 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC4 North Devon, Lynmouth | George Claridge Druce | Druce Herbarium, Oxford George Claridge Druce J Fraser | 8/1896 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Priddy | James Walter White | Druce's Original Herbarium J Fraser | 16/9/1906 1925 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, Weston in Gordano | Cedric Bucknall | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford Arthur Bennett J Fraser | 8/9/1919 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, Somerset, Cutcombe | Mason | Druce Herbarium, Oxford | 23/8/1928 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Friday Street | J Fraser | Botanical Exchange Club of The British Isles J Fraser | 28/8/1927 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Holmwood | | Henry Elliott Fox J Fraser J G William Hadden Beeby | 20/8/1885 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Kew Cultivated | John Gilbert Baker | Druce Herbarium, Oxford J Fraser John Gilbert Baker | 8/1866 | OXF |
| Mentha spicata x longifolia = M. x villosonervata | GB, VC17 Surrey, Friday Street GB, VC17 Surrey, Kew Cultivated | J Fraser | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford J Fraser | 24/8/1929 13/9/1929 | OXF |
| Mentha spicata x longifolia = M. x villosonervata | GB, VC17 Surrey, Friday Street GB, VC17 Surrey, Kew Cultivated | J Fraser | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford J Fraser | 30/8/1930 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC17 Surrey, Kew Cultivated GB, VC93 North Aberdeenshire, New Aberdour | J Fraser | Botanical Society & Exchange Club of The British Isles Druce Herbarium, Oxford J Fraser | 13/8/1928 to 19/8/1929 | OXF |
| 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 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 | Druce Herbarium, Oxford J Fraser | 7/9/1916 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC19 North Essex, Maplestead | George Claridge Druce | Druce Herbarium, Oxford | 8/1905 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC20 Hertfordshire, Bengeo | William Higgins Coleman | Druce Herbarium, Oxford | 30/9/1843 | 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, VC23 Oxfordshire, Deddington Bridge | | J Fraser | | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, North Leigh | George Claridge Druce | George Claridge Druce | 9/1915 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, North Leigh | George Claridge Druce | Druce Herbarium, Oxford J Fraser | 1886 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Crantock GB, VC23 Oxfordshire, Oxford Cultivated | J Fraser | Druce Herbarium, Oxford | 9/1915 | 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 arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Shotover | George Claridge Druce | George Claridge Druce J Fraser | 9/1885 | OXF |