| Mentha arvensis x spicata = M. x gracilis | GB, VC38 Warwickshire, Kenilworth | Robert Large Baker | | 8/9/1878 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, North Leigh | George Claridge Druce | | 8/1880 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC36 Herefordshire, Hereford | Augustin Ley | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford J Fraser | 8/1882 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, North Leigh | George Claridge Druce | | 9/1884 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC37 Worcestershire, Alfrick | Richard Francis Towndrow | J Fraser Richard Francis Towndrow | 15/9/1884 | 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 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 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, VC38 Warwickshire, Haseley Cultivated | Henry Bromwich | Botanical Exchange Club of The British Isles | 9/1886 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC36 Herefordshire, Wareham | Augustin Ley | | 15/9/1886 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC36 Herefordshire, Llanwarne | B King | | 1887 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC36 Herefordshire, Sellack | Augustin Ley | Druce Herbarium, Oxford J Fraser | 6/8/1887 | 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, VC22 Berkshire, Didcot | George Claridge Druce | Druce Herbarium, Oxford | 9/1888 9/1889 10/1891 | 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 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 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 arvensis x spicata = M. x gracilis | GB, VC57 Derbyshire, Shirley Cultivated | William Richardson Linton | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford Henry Elliott Fox J Fraser John Gilbert Baker William Richardson Linton | 4/9/1889 to 8/1890 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC57 Derbyshire, Shirley Cultivated | William Richardson Linton | | 4/9/1889 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC22 Berkshire, Uffington | George Claridge Druce | | 1890 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC38 Warwickshire, Haseley Cultivated | Henry Bromwich | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford | 8/1890 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC38 Warwickshire, Haseley Cultivated | Henry Bromwich | Botanical Exchange Club of The British Isles | 8/1890 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC69 Westmorland, Skelwith Bridge | | Druce Herbarium, Oxford | 8/1890 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC69 Westmorland, Skelwith Bridge | Henry Elliott Fox | | 8/1890 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC22 Berkshire, Newbury | George Claridge Druce | Druce Herbarium, Oxford | 9/1891 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC57 Derbyshire, Belper | | Botanical Exchange Club of The British Isles Druce's Original Herbarium Edward Francis Linton | 9/1892 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC57 Derbyshire, Snelston | J Fraser | Botanical Exchange Club of The British Isles Druce's Original Herbarium Edward Francis Linton | 9/1892 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC57 Derbyshire, Belper | Edward Francis Linton | Druce Herbarium, Oxford Edward Francis Linton | 22/9/1892 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC105 West Ross & Cromarty, Applecross | George Claridge Druce | George Claridge Druce | 7/1893 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC57 Derbyshire, Dovedale | | | 5/9/1893 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC58 Cheshire, Gallantry Bank | Anthony Hurt Wolley Dod | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford Anthony Hurt Wolley Dod | 9/8/1894 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC55 Leicestershire, Woodhouse Eaves | Frederick Thompson Mott | Botanical Exchange Club of The British Isles Frederick Thompson Mott | 8/1895 | 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, VC47 Montgomeryshire, Craig Breidden | George Claridge Druce | George Claridge Druce | 1896 | 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, VC22 Berkshire, Didcot | George Claridge Druce | | 8/1896 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC22 Berkshire, Cothill | George Claridge Druce | | 9/1896 | OXF |