| Eleocharis uniglumis | GB, VC41 Glamorganshire, Llanmadoc | Arthur Langford Still | Job Edward Lousley | 29/6/1935 | SLBI |
| Eriophorum latifolium | GB, VC6 North Somerset, Charterhouse on Mendip | Arthur Langford Still | Job Edward Lousley | 12/6/1934 | SLBI |
| Fumaria bastardii var. hibernica | GB, VC1 West Cornwall, Mullion Cove | Arthur Langford Still | | 12/6/1938 | SLBI |
| Fumaria bastardii | GB, VC41 Glamorganshire, Llangennith | Arthur Langford Still | Edward Charles Wallace | 16/8/1934 | SLBI |
| Fumaria occidentalis | GB, VC1 West Cornwall, Lizard | Arthur Langford Still | | 6/1938 | SLBI |
| Galeopsis tetrahit | GB, Devon, Tiverton | Arthur Langford Still | Arthur Langford Still | 17/7/1941 | SLBI |
| Hieracium trichocaulon | GB, VC4 North Devon, Bampton | Arthur Langford Still | John Richard Wallis | 12/8/1942 | SLBI |
| Hirschfeldia incana | GB, VC41 Glamorganshire, Baglan | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 27/6/1935 | SLBI |
| Hypochaeris glabra | GB, VC41 Glamorganshire, Merthyr Mawr Warren | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 21/6/1925 | SLBI |
| Lithospermum purpureocaeruleum | GB, VC6 North Somerset, Axbridge | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 4/6/1924 | SLBI |
| Lotus angustissimus | GB, VC17 Surrey, Wonersh | Arthur Langford Still | Job Edward Lousley | 13/8/1935 | SLBI |
| Melittis melissophyllum | GB, VC4 North Devon, Hartland | Arthur Langford Still | Job Edward Lousley | 10/6/1941 | SLBI |
| Mentha aquatica | GB, VC1 West Cornwall, Perranwell | Arthur Langford Still | | 22/8/1935 | SLBI |
| Mentha aquatica | GB, VC1 West Cornwall, Ruan Major | Arthur Langford Still | | 22/8/1935 | SLBI |
| Mentha aquatica | GB, VC17 Surrey, Chiddingfold | Arthur Langford Still | | 8/8/1938 | SLBI |
| Mentha aquatica | GB, VC17 Surrey, Great Bookham Common | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 3/8/1934 | SLBI |
| Mentha aquatica | GB, VC17 Surrey, Shalford | Arthur Langford Still S A Chambers | S A Chambers | 27/9/1932 | SLBI |
| Mentha aquatica | GB, VC17 Surrey, Wallington Cultivated | Arthur Langford Still | | 21/5/1935 | SLBI |
| Mentha aquatica | GB, VC17 Surrey, Wallington Cultivated | Arthur Langford Still | Botanical Exchange Club of The British Isles | 6/9/1936 | SLBI |
| Mentha aquatica | GB, VC41 Glamorganshire, Bishopston | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 13/8/1934 | SLBI |
| Mentha aquatica | GB, VC41 Glamorganshire, Llanrhidian | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 12/8/1934 | SLBI |
| Mentha aquatica | GB, VC41 Glamorganshire, Parkmill | Arthur Langford Still | Job Edward Lousley | 10/9/1934 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC3 South Devon, Aveton Gifford | Arthur Langford Still | Job Edward Lousley | 21/8/1935 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC6 North Somerset, East Harptree | Arthur Langford Still | | 23/8/1938 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC14 East Sussex, Danehill | Arthur Langford Still | Botanical Exchange Club of The British Isles Job Edward Lousley | 8/9/1936 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC14 East Sussex, Danehill | Arthur Langford Still | Botanical Exchange Club of The British Isles | 8/9/1936 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC24 Buckinghamshire, Iver | Arthur Langford Still | Job Edward Lousley | 21/9/1935 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC24 Buckinghamshire, Iver | Arthur Langford Still | | 21/9/1935 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC41 Glamorganshire, Llangennith | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 11/8/1934 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC41 Glamorganshire, Llangennith,Coity Green | Arthur Langford Still | Job Edward Lousley | 2/9/1937 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC90 Angus, Brechin,Fern Den | Arthur Langford Still | | | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC90 Angus, Fern Den | Arthur Langford Still | Job Edward Lousley | 20/8/1937 | SLBI |
| Mentha arvensis | GB, VC6 North Somerset, East Harptree | Arthur Langford Still | | 23/8/1938 | SLBI |
| Mentha arvensis | GB, VC17 Surrey, Great Bookham Common | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 3/8/1934 | SLBI |
| Mentha arvensis | GB, VC34 West Gloucestershire, Symonds Yat | Arthur Langford Still | Job Edward Lousley | 8/1927 | SLBI |
| Mentha arvensis | GB, VC41 Glamorganshire, Llanrhidian | Arthur Langford Still | Edward Charles Wallace Job Edward Lousley | 12/8/1934 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC17 Surrey, Newdigate | Arthur Langford Still | Job Edward Lousley | 31/8/1933 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC21 Middlesex, Stanmore | Arthur Langford Still | Botanical Exchange Club of The British Isles | 18/9/1936 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC41 Glamorganshire, Parkmill | Eleanor Vachell | Arthur Langford Still | 15/9/1934 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Totnes | Francis Morland Day | Job Edward Lousley Arthur Langford Still | 17/9/1938 | SLBI |