| Carex ericetorum | GB, VC26 West Suffolk, Foxhole Heath | Francis Morland Day | | 26/5/1961 | K |
| Amaranthus blitum | GB, VC37 Worcestershire, Seven Stoke | Francis Morland Day | Job Edward Lousley | 10/10/1959 | SLBI |
| Lycopus europaeus | GB, VC36 Herefordshire, Hereford | Francis Morland Day | | 2/10/1959 | K |
| Blysmus compressus | GB, VC37 Worcestershire, Little Malvern | Francis Morland Day | | 27/6/1956 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC36 Herefordshire, Kerne Bridge | Francis Morland Day | | 20/9/1955 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC36 Herefordshire, Hampton Bishop | Francis Morland Day | | 16/9/1955 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC9 Dorset, Cattistock | Francis Morland Day | | 21/8/1955 | K |
| Mentha longifolia | GB, VC5 South Somerset, Yeovil | Francis Morland Day | | 17/8/1955 | K |
| Blysmus compressus | GB, VC27 East Norfolk, Beeston Regis Common | Francis Morland Day | | 18/8/1954 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC36 Herefordshire, Coddington | Francis Morland Day | | 21/9/1953 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC22 Berkshire, Blewbury | Francis Morland Day | | 7/9/1953 | K |
| Mentha x piperita | GB, VC37 Worcestershire, Alfrick | Francis Morland Day | | 22/9/1952 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC37 Worcestershire, Knightwick | Francis Morland Day | | 11/9/1952 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC37 Worcestershire, Knightwick | Francis Morland Day | | 11/9/1952 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC34 West Gloucestershire, Ross on Wye | Francis Morland Day | | 3/9/1952 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC36 Herefordshire, Bridstow | Francis Morland Day | | 3/9/1952 | K |
| Mentha gentilis var. gracilis | GB, VC21 Middlesex, Harefield | Francis Morland Day | | 28/8/1952 | K |
| Mentha arvensis | GB, VC24 Buckinghamshire, Princes Risborough | Francis Morland Day | | 23/8/1952 | K |
| Ballota nigra | GB, VC22 Berkshire, East Ilsley | Francis Morland Day | | 20/8/1952 | K |
| Mentha spicata x suaveolens = M. x villosa | GB, VC22 Berkshire, Compton | Francis Morland Day | | 19/8/1952 | K |
| Dactylis glomerata | GB, VC6 North Somerset, Cheddar Gorge | Francis Morland Day | | 6/6/1952 | K |
| Mentha arvensis | GB, VC36 Herefordshire, Old Country | Francis Morland Day | | 28/9/1951 | K |
| Mentha aquatica | GB, VC36 Herefordshire, Whitbourne | Francis Morland Day | | 21/9/1951 | K |
| Mentha spicata x longifolia = M. x villosonervata | GB, VC21 Middlesex, Harefield | Francis Morland Day | | 21/8/1951 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC21 Middlesex, Stanmore | Francis Morland Day Rex Alan Henry Graham | | 19/8/1951 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC21 Middlesex, Stanmore | Francis Morland Day Rex Alan Henry Graham | | 19/8/1951 | K |
| Carex ericetorum | GB, VC26 West Suffolk, Foxhole Heath | Francis Morland Day | | 25/5/1951 | K |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC37 Worcestershire, Mathon | Francis Morland Day | | 9/1950 | K |
| Mentha spicata | GB, VC20 Hertfordshire, Watford | Francis Morland Day O G Day Rex Alan Henry Graham | | 30/8/1950 | K |
| Mentha spicata | GB, VC7 North Wiltshire, Avebury | Francis Morland Day | | 14/8/1950 | K |
| Phalaris arundinacea | GB, VC36 Herefordshire, Cradley | Francis Morland Day | | 26/6/1950 | K |
| Festuca arundinacea | GB, VC37 Worcestershire, Birtsmorton | Francis Morland Day | | 19/6/1950 | K |
| Viola lactea | GB, VC3 South Devon, Chudleigh Knighton | Francis Morland Day | | 18/4/1950 | K |
| Limosella aquatica | GB, VC37 Worcestershire, Castlemorton | Francis Morland Day | | 10/9/1949 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC36 Herefordshire, Eye | Francis Morland Day | | 8/9/1949 | K |
| Mentha arvensis var. obtusifolia | GB, VC36 Herefordshire, Kingsland | Francis Morland Day | | 7/9/1949 | K |
| Mentha piperita var. piperita | GB, VC36 Herefordshire, Eyton | Francis Morland Day | | 7/9/1949 | K |
| Limosella aquatica | GB, VC33 East Gloucestershire, Forthampton | Francis Morland Day | | 5/8/1949 | K |
| Veronica catenata | GB, VC33 East Gloucestershire, Forthampton | Francis Morland Day | | 5/8/1949 | K |
| Mentha piperita var. piperita | GB, VC36 Herefordshire, Bolstone | Francis Morland Day | | 12/10/1948 | K |