| Mentha aquatica var. weiheana | GB, VC17 Surrey, Woking | Arthur Langford Still Edward Charles Wallace | Edward Charles Wallace | 6/9/1935 | K |
| Mentha aquatica | GB, VC20 Hertfordshire, Royston | Arthur Langford Still | Arthur Langford Still | 29/9/1935 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC21 Middlesex, Stanmore | Arthur Langford Still | | 26/8/1930 to 26/8/1939 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC21 Middlesex, Stanmore | Arthur Langford Still | Botanical Exchange Club of The British Isles | 18/9/1936 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC21 Middlesex, Stanmore | Arthur Langford Still | | 18/9/1936 | K |
| Mentha piperita var. piperita | GB, VC33 East Gloucestershire, Fossebridge | Arthur Langford Still | Arthur Langford Still Job Edward Lousley | 23/8/1937 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Wallington Cultivated GB, VC34 West Gloucestershire, Symonds Yat | Arthur Langford Still | Botanical Exchange Club of The British Isles | 8/1937 | K |
| Mentha x verticillata var. rivalis | GB, VC36 Herefordshire, Canon Frome | Arthur Langford Still | Arthur Langford Still Job Edward Lousley | 5/9/1940 | K |
| Mentha arvensis x spicata = M. x gracilis | GB, VC36 Herefordshire, Symonds Yat | Arthur Langford Still | | 27/8/1936 | K |
| Mentha spicata | GB, VC36 Herefordshire, Wellington Cultivated | Arthur Langford Still | Arthur Langford Still | 29/7/1935 | K |
| Mentha arvensis | GB, VC37 Worcestershire, Cotheridge | | Arthur Langford Still Job Edward Lousley | 12/9/1940 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC41 Glamorganshire, Bishopston | Esther J Bowen | Arthur Langford Still | 23/9/1934 | K |
| Mentha gentilis var. vesana | GB, VC41 Glamorganshire, Bishopston | Arthur Langford Still | Botanical Exchange Club of The British Isles | 3/9/1937 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC41 Glamorganshire, Parkmill | Arthur Langford Still | Botanical Exchange Club of The British Isles | 1/9/1937 | K |
| Mentha aquatica x spicata = M. x piperita var. crispa | GB, VC17 Surrey, Wallington Cultivated GB, VC70 Cumberland, Carlisle | Arthur Langford Still | Botanical Exchange Club of The British Isles | 10/8/1937 | K |
| Mentha spicata | GB, VC90 Angus, Glamis | Arthur Langford Still | Botanical Exchange Club of The British Isles | 19/8/1937 | K |
| Mentha spicata | GB, VC90 Angus, Glamis | Arthur Langford Still | Botanical Exchange Club of The British Isles | 19/8/1937 | K |
| Mentha spicata x suaveolens = M. x villosa | GB, VC3 South Devon, Dawlish | Arthur Langford Still | University of Exeter | 8/9/1937 | LIV |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC4 North Devon, Belstone | Arthur Langford Still | University of Exeter | 29/7/1937 | LIV |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Bookham | Arthur Langford Still | Joseph Norman Frankland | 7/9/1937 | LIV |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC17 Surrey, Chiddingfold | Arthur Langford Still | Joseph Norman Frankland | 5/9/1937 | LIV |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Wallington Cultivated | Arthur Langford Still | F W Holder | 8/1936 | LIV |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC17 Surrey, Bramley | Arthur Langford Still | Edward Charles Wallace William Harold Pearsall | 4/9/1934 | MANCH |
| Mentha arvensis x spicata = M. x gracilis | GB, VC2 East Cornwall, Looe | Arthur Langford Still | | 8/1906 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC14 East Sussex, Danehill | Arthur Langford Still | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford Edward Charles Wallace | 8/9/1926 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Wallington Cultivated | Arthur Langford Still | | 8/1926 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Wallington Cultivated GB, VC20 Hertfordshire, Roydon | Arthur Langford Still | Botanical Exchange Club of The British Isles | 6/9/1936 | OXF |
| Mentha aquatica x spicata = M. x piperita | GB, VC17 Surrey, Wallington Cultivated GB, VC6 North Somerset, Weston in Gordano | Arthur Langford Still | | 8/1937 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC20 Hertfordshire, Harpenden Cultivated | Harry Joseph Riddelsdell | Arthur Langford Still Harry Joseph Riddelsdell | 8/1938 | 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, VC23 Oxfordshire, Oxford | | Druce Herbarium, Oxford Arthur Langford Still | 6/9/1937 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC34 West Gloucestershire, Lydbrook | Arthur Langford Still | | 28/8/1936 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC34 West Gloucestershire, Symonds Yat Cultivated | Arthur Langford Still | | 8/1937 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC41 Glamorganshire, Bishopston | Arthur Langford Still | Botanical Society & Exchange Club of The British Isles Druce Herbarium, Oxford | 3/9/1937 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC41 Glamorganshire, Llangennith | Arthur Langford Still | Edward Charles Wallace | 16/9/1934 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC41 Glamorganshire, Parkmill, Gower | Arthur Langford Still | Botanical Society & Exchange Club of The British Isles Druce Herbarium, Oxford | 1/9/1937 | OXF |
| Mentha suaveolens x longifolia = M. x rotundifolia var. webberi | GB, VC90 Angus, Glamis | Arthur Langford Still Robert Henry Corstorphine | Edward Charles Wallace | 19/8/1937 | OXF |
| Mentha spicata | GB, VC1 West Cornwall, Bissoe | Arthur Langford Still | Job Edward Lousley | 21/8/1935 | SLBI |
| Fumaria occidentalis | GB, VC1 West Cornwall, Lizard | Arthur Langford Still | | 6/1938 | SLBI |
| Mentha pulegium | GB, VC1 West Cornwall, Mullion | Arthur Langford Still | Job Edward Lousley | 22/8/1935 | SLBI |