| Mentha aquatica x spicata = M. x piperita | GB, VC64 Mid-west Yorkshire, Howgill | R C Palmer | Druce Herbarium, Oxford | 9/1952 | OXF |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC68 North Northumberland, Hedgehope Hill | W Fampton | Druce Herbarium, Oxford William Wilson Saunders Dawes Cholmeley Russell | | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC70 Cumberland, Melmerby | | Druce Herbarium, Oxford | 9/1920 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC78 Peeblesshire, Kittlegairy Hill | Charles Bailey | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford | 27/9/1898 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC79 Selkirkshire, Galashiels | Ida Margaret Hayward | Druce Herbarium, Oxford | 1913 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC88 Mid Perthshire, Fortingall | Edmund Frederic Warburg | Druce Herbarium, Oxford | 2/9/1947 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC98 Argyllshire, Ballachulish | Edmund Frederic Warburg | Druce Herbarium, Oxford Edmund Frederic Warburg | 28/8/1947 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC98 Argyllshire, Ballachulish | Edmund Frederic Warburg | Druce Herbarium, Oxford | 28/8/1947 | OXF |
| Mentha aquatica x spicata = M. x piperita | IE, VCH1 South Kerry, Kenmare | George Claridge Druce | Druce Herbarium, Oxford | 1927 | OXF |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC47 Montgomeryshire, Pen-y-bont-fawr | H J Killick | Druce Herbarium, Oxford | 20/8/1999 | OXF |
| Mentha arvensis x spicata = M. x gracilis | | William Sole | Druce Herbarium, Oxford William John Blake | | OXF |
| Mentha arvensis x spicata = M. x gracilis | | John Hutton Balfour | Druce Herbarium, Oxford John Hutton Balfour | | 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, 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 arvensis x spicata = M. x gracilis | GB, VC14 East Sussex, Haywards Heath | R C Palmer | Druce Herbarium, Oxford | 1955 | 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 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, VC19 North Essex, Alphamstone Cultivated | George Charles Brown | Druce Herbarium, Oxford J Fraser | 7/9/1916 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC20 Hertfordshire, Hertford | John Bury Higgens | Druce Herbarium, Oxford | 1912 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC20 Hertfordshire, Waterford | John Ansell | Druce Herbarium, Oxford | 5/8/1846 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC21 Middlesex, Acton | Alfred Loydell | Druce Herbarium, Oxford | 7/1898 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC21 Middlesex, Stanmore Common | Arthur Langford Still | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford Edward Charles Wallace | 19/9/1936 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC22 Berkshire, Newbury | George Claridge Druce | Druce Herbarium, Oxford | 9/1891 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC12,VC22, Swallowfield | Gertrude Foggitt | Druce Herbarium, Oxford | 9/1920 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Goring Cultivated | Harry Joseph Riddelsdell | Druce Herbarium, Oxford | 2/9/1938 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Horley | Richard Charles Palmer | Druce Herbarium, Oxford | 27/9/1969 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Oxford | | Druce Herbarium, Oxford | 8/9/1937 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Oxford | | Druce Herbarium, Oxford Arthur Langford Still | 6/9/1937 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Oxford | Richard Charles Palmer | Druce Herbarium, Oxford | 8/1958 | 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 arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Shotover | George Claridge Druce | Druce Herbarium, Oxford | 30/9/1887 | 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, VC34 West Gloucestershire, River Wye | George Claridge Druce | Druce Herbarium, Oxford | 9/1900 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC36 Herefordshire, Great Doward | Augustin Ley | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford J Fraser | 7/9/1906 | 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 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, VC36 Herefordshire, Underdown, Ledbury Cultivated | Spencer Henry Bickham | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford J Fraser Spencer Henry Bickham | 6/8/1906 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC37 Worcestershire, Powick | Richard Francis Towndrow | Druce Herbarium, Oxford | 10/9/1900 | 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 |