| Mentha aquatica | GB, VC36 Herefordshire, Eastnor | Francis Morland Day | | 1/9/1942 | K |
| Mentha aquatica | GB, VC3 South Devon, Exminster | Francis Morland Day | | 8/9/1941 | K |
| Mentha aquatica | GB, VC37 Worcestershire, Malvern | Francis Morland Day | | 28/10/1941 | K |
| Mentha aquatica | GB, VC3 South Devon, Churston | Francis Morland Day | | 6/9/1941 | K |
| Mentha aquatica | GB, VC3 South Devon, Teigngrace | Francis Morland Day | | 9/9/1935 | K |
| Mentha aquatica | GB, VC27 East Norfolk, Gillingham | Francis Morland Day | | 5/9/1938 | K |
| Mentha aquatica | GB, VC3 South Devon, Cornworthy | Francis Morland Day | | 7/9/1942 | K |
| Mentha aquatica | GB, VC36 Herefordshire, Colwall | Francis Morland Day | | 23/9/1938 | K |
| Mentha aquatica | GB, VC29 Cambridgeshire, Wicken Fen | Francis Morland Day | | 11/8/1939 | K |
| Mentha aquatica | GB, VC4 North Devon, Braunton Burrows | Francis Morland Day | | 22/8/1935 | K |
| Mentha aquatica | GB, VC34 West Gloucestershire, Bromsberrow | Francis Morland Day | | 28/8/1942 | K |
| Mentha aquatica | GB, VC34 West Gloucestershire, Bromsberrow | Francis Morland Day | | 28/8/1942 | K |
| Mentha aquatica | GB, VC25 East Suffolk, Beccles | Francis Morland Day | | 5/9/1938 | K |
| Mentha aquatica | GB, VC33 East Gloucestershire, Chedworth | Francis Morland Day | | 26/8/1937 | K |
| Mentha aquatica | GB, VC34 West Gloucestershire, Bromsberrow | Francis Morland Day | | 29/8/1942 | K |
| Mentha aquatica x spicata = M. x piperita | GB, VC36 Herefordshire, Ledbury | Francis Morland Day | Arthur Langford Still | 29/8/1940 | CGE |
| Mentha arvensis var. allionii | GB, VC3 South Devon, Lustleigh | Francis Morland Day | | 22/8/1939 | K |
| Mentha arvensis var. obtusifolia | GB, VC36 Herefordshire, Breinton Common | Francis Morland Day | | 27/8/1942 | K |
| Mentha arvensis var. densifoliata | GB, VC37 Worcestershire, Mathon | Francis Morland Day | | 13/10/1942 | K |
| Mentha arvensis var. obtusifolia | GB, VC36 Herefordshire, Coddington | Francis Morland Day | | 4/10/1941 | K |
| Mentha arvensis | GB, VC3 South Devon, Brixham | Francis Morland Day | | 19/9/1942 | K |
| Mentha arvensis var. praecox | GB, VC36 Herefordshire, Cradley | Francis Morland Day | | 4/10/1938 | K |
| Mentha arvensis var. cuneifolia | GB, VC36 Herefordshire, Colwall | Francis Morland Day | | 16/10/1943 | K |
| Mentha arvensis | GB, VC37 Worcestershire, Cotheridge | Francis Morland Day | | 12/9/1940 | K |
| Mentha arvensis var. cuneifolia | GB, VC36 Herefordshire, Colwall | Francis Morland Day | | 26/8/1943 | K |
| Mentha arvensis var. praecox | GB, VC36 Herefordshire, Cradley | Francis Morland Day | | 17/8/1939 | K |
| Mentha arvensis var. obtusifolia | GB, VC36 Herefordshire, Kingsland | Francis Morland Day | | 7/9/1949 | K |
| Mentha arvensis var. austriaca | GB, VC36 Herefordshire, Colwall | Francis Morland Day | | 15/10/1937 | K |
| Mentha arvensis var. praecox | GB, VC29 Cambridgeshire, Waterbeach | Francis Morland Day | | 7/8/1939 | K |
| Mentha arvensis var. austriaca | GB, VC3 South Devon, Lustleigh | Francis Morland Day | | 16/8/1935 | K |
| Mentha arvensis var. cuneifolia | GB, VC36 Herefordshire, Colwall | Francis Morland Day | | 25/9/1946 | K |
| Mentha arvensis var. austriaca | GB, VC36 Herefordshire, Mathon | Francis Morland Day | | 13/10/1942 | K |
| Mentha arvensis var. cuneifolia | GB, VC3 South Devon, Dittisham | Francis Morland Day | | 14/9/1938 | K |
| Mentha arvensis var. densifoliata | GB, VC36 Herefordshire, Colwall | Francis Morland Day | | 16/10/1943 | K |
| Mentha arvensis var. praecox | GB, VC36 Herefordshire, Mathon | Francis Morland Day | | 13/10/1942 | K |
| Mentha arvensis | GB, VC36 Herefordshire, Ledbury | Francis Morland Day | | 29/8/1940 | K |
| Mentha arvensis | GB, VC36 Herefordshire, Evesbatch | Francis Morland Day | | 14/11/1939 | K |
| Mentha arvensis | GB, VC3 South Devon, Brixham | Francis Morland Day | | 6/9/1942 | K |
| Mentha arvensis | GB, VC3 South Devon, Kingskerswell | Francis Morland Day | | 12/8/1940 | K |
| Mentha arvensis | GB, VC36 Herefordshire, Old Country | Francis Morland Day | | 28/9/1951 | K |