| Mentha arvensis x spicata = M. x gracilis | GB, VC21 Middlesex, Acton | Alfred Loydell | Druce Herbarium, Oxford | 7/1898 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC21 Middlesex, Northwood Cultivated | Rex Alan Henry Graham | Rex Alan Henry Graham | 16/8/1952 | OXF |
| Mentha suaveolens x longifolia = M. x rotundifolia var. webberi | GB, VC21 Middlesex, Northwood | Rex Alan Henry Graham | Rex Alan Henry Graham | 15/8/1952 | 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 aquatica x spicata = M. x piperita | GB, VC22 Berkshire, Cothill | George Claridge Druce | | 9/1896 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC22 Berkshire, Cothill | Percival George Beak | Percival George Beak | 15/8/1932 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC22 Berkshire, Didcot | Richard Charles Palmer | Druce Herbarium, Oxford | 8/8/1998 | 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 | GB, VC22 Berkshire, Didcot | George Claridge Druce | | 8/1896 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC22 Berkshire, Didcot | Richard Charles Palmer | | 29/8/1975 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC22 Berkshire, East Hagbourne | Harry Joseph Riddelsdell | | 11/9/1938 | 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, VC22 Berkshire, Oxford | Henry Boswell | | 3/9/1857 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC22 Berkshire, Uffington | George Claridge Druce | | 1890 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC22 Berkshire, Wargrave | George Stanton | George Claridge Druce | 2/9/1901 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC22 Berkshire, Wootton | Henry Boswell | Henry Boswell | 9/9/1867 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC12,VC22, Swallowfield | Gertrude Foggitt | Druce Herbarium, Oxford | 9/1920 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Brackley | Richard Charles Palmer | Druce Herbarium, Oxford | 4/9/1963 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Cleeve, Goring | Harry Joseph Riddelsdell | | 5/9/1938 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, Culham | Richard Charles Palmer | | 17/7/1976 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Deddington Bridge | | J Fraser | | 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, Goring | Harry Joseph Riddelsdell | | 10/9/1937 | 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, Marston | | George Claridge Druce | | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Mixbury | Richard Charles Palmer | Druce Herbarium, Oxford | 4/9/1963 | 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, 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 | | | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, North Leigh | George Claridge Druce | | 8/1880 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, North Leigh | George Claridge Druce | Druce Herbarium, Oxford J Fraser | 1886 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC23 Oxfordshire, Oxford Cultivated | | | 9/1866 | 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, VC23 Oxfordshire, Oxford | Henry Boswell | Henry Boswell | | 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 spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, Oxford | Humphrey John Moule Bowen | Druce Herbarium, Oxford | 30/7/1965 | OXF |
| Mentha spicata x suaveolens = M. x villosa | GB, VC23 Oxfordshire, Oxford | George Claridge Druce | | 9/1926 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC23 Oxfordshire, Oxford, Yardley Lodge Cultivated | George Claridge Druce | | 9/1915 | OXF |