| Pteridium aquilinum | GB, VC21 Middlesex, West Drayton | Ronald Melville | Botanical Exchange Club of The British Isles Harold Stuart Thompson | 14/10/1934 | BIRM |
| Carex pseudocyperus | GB, VC19 North Essex, Braintree | Ronald Melville | | 18/6/1954 | E |
| Carex remota | GB, VC49 Caernarvonshire, Y Gledrydd | Ronald Melville | Royal Botanic Gardens, Kew | 7/8/1955 | E |
| Aceras anthropophorum | GB, VC16 West Kent, Chevening | Ronald Melville | | 2/6/1929 | K |
| Astragalus danicus | GB, VC29 Cambridgeshire, Duxford | Ronald Melville | | 21/6/1931 | K |
| Baldellia ranunculoides | GB, VC1 West Cornwall, Kynance | Ronald Melville | | 21/5/1937 | K |
| Baldellia ranunculoides | GB, VC41 Glamorganshire, Briton Ferry | Ronald Melville | | 8/6/1930 | K |
| Bupleurum tenuissimum | GB, VC5 South Somerset, Steart Point | Ronald Melville | | 17/8/1954 | K |
| Cuscuta epithymum | GB, VC41 Glamorganshire, Llandough | Ronald Melville | | 9/1923 | K |
| Dactylis glomerata | GB, VC6 North Somerset, Brean Down | Ronald Melville | | 11/6/1938 | K |
| Dactylis glomerata | GB, VC41 Glamorganshire, Cardiff, Cardiff Docks | Ronald Melville | | 23/9/1926 | K |
| Festuca arundinacea | GB, VC6 North Somerset, Berrow | Ronald Melville | | 15/6/1938 | K |
| Fraxinus | GB, VC36 Herefordshire, Bromyard | Herbert Kenneth Airy Shaw Ronald Melville | | 30/7/1939 | K |
| Fraxinus | GB, VC36 Herefordshire, Bromyard | Herbert Kenneth Airy Shaw Ronald Melville | | 30/7/1939 | K |
| Fraxinus excelsior | GB, VC36 Herefordshire, Bromyard | Herbert Kenneth Airy Shaw Ronald Melville | | 30/7/1939 | K |
| Glebionis segetum | GB, VC41 Glamorganshire, Splott | Ronald Melville | | 19/6/1927 | K |
| Hordeum marinum | GB, VC18 South Essex, Dagenham | Ronald Melville | | 17/6/1928 | K |
| Hypochaeris glabra | GB, VC26 West Suffolk, Barton Mills | Ronald Melville | | 9/6/1934 | K |
| Kickxia elatine subsp. elatine | GB, VC41 Glamorganshire, Splott | Ronald Melville | | 10/9/1930 | K |
| Kickxia elatine subsp. elatine | GB, VC45 Pembrokeshire, Freshwater East | Ronald Melville | | 27/6/1940 | K |
| Lavandula angustifolia | GB, VC17 Surrey, Kew Gardens Cultivated | Ronald Melville | | 9/8/1937 | K |
| Lavandula angustifolia | GB, VC17 Surrey, Kew Gardens Cultivated | Ronald Melville | | 9/8/1937 | K |
| Lavandula angustifolia | GB, VC17 Surrey, Kew Gardens Cultivated | Ronald Melville | | 7/8/1937 | K |
| Lavandula angustifolia | GB, VC17 Surrey, Kew Gardens Cultivated | Ronald Melville | | 9/8/1937 | K |
| Lavandula angustifolia | GB, VC17 Surrey, Kew Gardens Cultivated | Ronald Melville | | 9/8/1937 | K |
| Lavandula angustifolia | GB, VC17 Surrey, Kew Gardens Cultivated | Ronald Melville | | 9/8/1937 | K |
| Lavandula angustifolia x latifolia = L. x intermedia | GB, VC17 Surrey, Kew Cultivated | Ronald Melville | | 9/8/1937 | K |
| Lavandula angustifolia x latifolia = L. x intermedia | GB, VC17 Surrey, Kew Cultivated | Ronald Melville | | 9/8/1937 | K |
| Ligustrum vulgare | GB, VC17 Surrey, Ranmore Common | J Hutchinson Ronald Melville | | 15/6/1945 | K |
| Linaria minor | GB, VC10 Isle of Wight, Newport | Ronald Melville | | 6/9/1929 | K |
| Linaria repens | GB, VC1 West Cornwall, Penryn | Ronald Melville | | 17/6/1936 | K |
| Linaria repens | GB, VC41 Glamorganshire, Briton Ferry | Ronald Melville | | 27/9/1929 | K |
| Linaria triphylla | GB, VC41 Glamorganshire, Splott | Ronald Melville | | 24/9/1926 | K |
| Linaria vulgaris | GB, VC26 West Suffolk, Eriswell | Ronald Melville | | 29/7/1936 | K |
| Mentha arvensis | GB, VC41 Glamorganshire, Barry Docks | Ronald Melville | | 26/9/1926 | K |
| Misopates orontium | GB, VC9 Dorset, Wool | Ronald Melville | | 19/6/1955 | K |
| Monotropa hypopitys | GB, VC59 South Lancashire, Formby | Ronald Melville | | 3/9/1930 | K |
| Ophrys insectifera | GB, VC17 Surrey, Coulsdon Bottom | Ronald Melville | | 13/6/1926 | K |
| Origanum vulgare | GB, VC17 Surrey, Kew Gardens | Ronald Melville | | 12/8/1945 | K |
| Origanum vulgare | GB, VC17 Surrey, Kew Gardens | Ronald Melville | | 12/8/1945 | K |