| Limosella aquatica | GB, Hampshire, New Forest Cultivated | | Benjamin Thompson Lowne jnr | | K |
| Limosella aquatica | GB, Hampshire, New Forest Cultivated | | Benjamin Thompson Lowne jnr | 11/9/1936 | K |
| Limosella aquatica | GB, Hampshire, New Forest Cultivated | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 3/9/1937 | K |
| Linaria genistifolia subsp. dalmatica | GB, VC13 West Sussex, Worthing Cultivated | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 31/8/1948 | K |
| Linaria purpurea | GB, VC28 West Norfolk, Thetford | Henry Dixon Hewitt | Benjamin Thompson Lowne jnr | 17/7/1941 | K |
| Linaria repens | GB, VC11 South Hampshire, Bournemouth Cultivated | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 9/8/1914 | K |
| Linaria repens | GB, VC14 East Sussex, Wannock | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 7/9/1952 | K |
| Linaria repens | GB, VC44 Carmarthenshire, Velindre | Benjamin Thompson Lowne jnr | | 27/8/1907 | K |
| Linaria vulgaris | GB, VC14 East Sussex, Bishopstone | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 30/7/1939 | K |
| Linaria vulgaris | GB, VC15 East Kent, Margate | | Benjamin Thompson Lowne jnr | 6/1898 | K |
| Linaria vulgaris | GB, VC27 East Norfolk, Framingham, Norfolk | Robert James Mann | Benjamin Thompson Lowne jnr | 9/1834 | K |
| Linaria vulgaris x repens = L. x sepium | GB, VC9 Dorset, Langton Matravers | Edmund Browne Bishop | Benjamin Thompson Lowne jnr | 21/6/1921 | K |
| Linaria vulgaris x repens = L. x sepium | GB, VC44 Carmarthenshire, Velindre | Henry Dixon Hewitt | Benjamin Thompson Lowne jnr | | K |
| Marrubium vulgare | GB, VC16 West Kent, Bromley | | Benjamin Thompson Lowne jnr | 9/1899 | K |
| Marrubium vulgare | GB, VC27 East Norfolk, Buxton | Robert James Mann | Benjamin Thompson Lowne jnr | 1837 | K |
| Melissa officinalis | GB, VC16 West Kent, Catford Cultivated | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 8/8/1908 | K |
| Melittis melissophyllum | GB, VC2 East Cornwall, West Looe | | Benjamin Thompson Lowne jnr | 21/6/1905 | K |
| Melittis melissophyllum | GB, VC3 South Devon, Saltram | Francis Henry Goulding | Benjamin Thompson Lowne jnr | | K |
| Melittis melissophyllum | GB, VC13 West Sussex, Lower Beeding | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 9/9/1950 | K |
| Mentha aquatica | GB, VC16 West Kent, Keston | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 11/8/1898 | K |
| Mentha aquatica | GB, VC26 West Suffolk, Bury St Edmunds, Horringer | Henry Dixon Hewitt | Benjamin Thompson Lowne jnr | 8/8/1917 | K |
| Mentha aquatica | GB, VC27 East Norfolk, Thorpe | Robert James Mann | Benjamin Thompson Lowne jnr | 8/1837 | K |
| Mentha arvensis | GB, VC16 West Kent, Catford Cultivated | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 18/8/1907 | K |
| Mentha arvensis | GB, VC12 North Hampshire, Crondall GB, VC16 West Kent, Chislehurst | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 7/8/1899 | K |
| Mentha arvensis | GB, VC25 East Suffolk, Framlingham | Robert James Mann | Benjamin Thompson Lowne jnr | 8/1837 | K |
| Mentha arvensis | GB, VC27 East Norfolk, Hevingham | Robert James Mann | Benjamin Thompson Lowne jnr | 8/1847 | K |
| Mentha arvensis | GB, VC29 Cambridgeshire, Fowlmere | Henry Dixon Hewitt | Benjamin Thompson Lowne jnr | 5/8/1923 | K |
| Mentha arvensis var. praecox | GB, VC58 Cheshire, Tilston Cultivated | | Benjamin Thompson Lowne jnr | | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC2 East Cornwall, West Looe | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 28/8/1900 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC13 West Sussex, South Stoke | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 23/9/1937 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC27 East Norfolk, Horsham Saint Faith | Robert James Mann | Benjamin Thompson Lowne jnr | 1834 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC10 Isle of Wight, Luccombe Chine | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 27/8/1911 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC14 East Sussex, Bexhill | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 22/8/1937 | K |
| Mentha pulegium | GB, VC1 West Cornwall, Perranwell | | Benjamin Thompson Lowne jnr | 23/8/1899 | K |
| Mentha pulegium | GB, VC16 West Kent, Chislehurst | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 18/9/1904 | K |
| Mentha spicata | GB, VC13 West Sussex, Henfield | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 30/8/1938 | K |
| Mentha spicata | GB, VC27 East Norfolk, Great Yarmouth | Robert James Mann | Benjamin Thompson Lowne jnr Robert James Mann | 7/1834 | K |
| Mentha spicata | GB Cultivated | | Benjamin Thompson Lowne jnr | | K |
| Mentha spicata x longifolia = M. x villosonervata | GB, VC9 Dorset, Swanage | | Benjamin Thompson Lowne jnr | | K |
| Mentha spicata x suaveolens = M. x villosa | GB, VC13 West Sussex, North Stoke | Benjamin Thompson Lowne jnr | Benjamin Thompson Lowne jnr | 23/9/1937 | K |