| Carex muricata subsp. pairae | GB, VC52 Anglesey, Llyn Coron | Arthur Langford Still | Job Edward Lousley | 6/1936 | SLBI |
| Ranunculus fluitans | GB, VC52 Anglesey, Llyn Coron | Arthur Langford Still | Job Edward Lousley | 6/1936 | SLBI |
| Trifolium striatum | GB, VC52 Anglesey, Porth Dafarch | Arthur Langford Still | Flora Britannica | 7/6/1937 | SLBI |
| Atriplex | GB, VC52 Anglesey, Rhosneigr | Arthur Langford Still | | 24/6/1937 | SLBI |
| Carex flacca | GB, VC52 Anglesey, Trearddur Bay | Arthur Langford Still | Job Edward Lousley | 5/6/1937 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC90 Angus, Brechin,Fern Den | Arthur Langford Still | | | SLBI |
| Mentha spicata | GB, VC90 Angus, Edzell,West Water | Arthur Langford Still | Job Edward Lousley | 20/8/1937 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC90 Angus, Fern Den | Arthur Langford Still | Job Edward Lousley | 20/8/1937 | SLBI |
| Mentha spicata | GB, VC90 Angus, Forfar | Arthur Langford Still | Job Edward Lousley | 21/8/1937 | SLBI |
| Mentha longifolia | GB, VC90 Angus, Glamis | Arthur Langford Still | | 19/8/1937 | SLBI |
| Mentha spicata | GB, Ambiguous locality (GB), Wallington Cultivated | Arthur Langford Still | Edward Charles Wallace | 8/1935 | SLBI |
| 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 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, VC17 Surrey, Wallington Cultivated | Arthur Langford Still | | 8/1926 | 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 suaveolens x longifolia = M. x rotundifolia | GB, VC17 Surrey, Bramley | Arthur Langford Still | Edward Charles Wallace William Harold Pearsall | 4/9/1934 | MANCH |
| 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 spicata | GB, VC1 West Cornwall, Poldhu Cove GB, VC17 Surrey, Wallington Cultivated | Arthur Langford Still | Job Edward Lousley | 10/8/1940 | K |
| Mentha aquatica | GB, VC17 Surrey, Wallington Cultivated GB, VC2 East Cornwall, Boscastle | Arthur Langford Still | Job Edward Lousley | 1/8/1940 | K |
| Mentha arvensis | GB, VC3 South Devon, Buckfastleigh | Arthur Langford Still | | 20/7/1935 | K |
| Mentha x muelleriana | GB, VC17 Surrey, Wallington Cultivated GB, VC3 South Devon, Salcombe | Arthur Langford Still | Botanical Exchange Club of The British Isles | 9/1937 | K |
| Mentha x muelleriana | GB, VC17 Surrey, Wallington Cultivated GB, VC3 South Devon, Salcombe | Arthur Langford Still | Botanical Exchange Club of The British Isles | 15/8/1938 | K |
| Mentha x piperita | GB, VC17 Surrey, Wallington Cultivated GB, Wiltshire, Bedwyn | Arthur Langford Still | Job Edward Lousley | 10/8/1940 | K |
| Mentha x piperita | GB, VC14 East Sussex, Danehill | Arthur Langford Still | Botanical Society & Exchange Club of The British Isles | 8/9/1936 | K |
| Mentha spicata | GB, VC16 West Kent, Farningham | Arthur Langford Still | Arthur Langford Still | 29/7/1934 | K |
| Veronica agrestis | GB, VC17 Surrey, Addington | Arthur Langford Still | Job Edward Lousley | 4/7/1940 | K |