| Rubus ahenifolius | GB, VC17 Surrey, Bisley | Charles Avery | William Charles Richard Watson | 17/8/1936 | SLBI |
| Rosa obtusifolia subsp. tomentella | GB, VC17 Surrey, Horsell Common | W Biddiscombe | William Charles Richard Watson | 24/8/1931 | SLBI |
| Rubus melanocladus | GB, VC34 West Gloucestershire, Mitcheldean Meend | Augustin Ley | William Charles Richard Watson | 2/7/1896 | SLBI |
| Rubus edeesii | GB, VC54 North Lincolnshire, Apley | Augustin Ley | William Charles Richard Watson | 16/8/1907 | SLBI |
| Rubus hesperius | IE, VCH26 East Mayo, Cong | Edward Shearburn Marshall | William Charles Richard Watson | 11/6/1896 | SLBI |
| Rubus conjungens | GB, VC33 East Gloucestershire, Bourton on the Water | William Hobson Mills | William Charles Richard Watson | 2/8/1949 | SLBI |
| Rubus conjungens | GB, VC33 East Gloucestershire, Bourton on the Water | William Hobson Mills | William Charles Richard Watson | 2/8/1949 | SLBI |
| Rubus pictorum | GB, VC87 West Perthshire, Doune | William Hobson Mills | William Charles Richard Watson | 21/7/1953 | SLBI |
| Rubus boulayi | GB, VC9 Dorset, Branksome Park, Bournemouth | William Charles Richard Watson | William Charles Richard Watson | 10/9/1936 | SLBI |
| Rubus | GB, VC14 East Sussex, Wych Cross | William Charles Richard Watson | William Charles Richard Watson | 16/7/1936 | SLBI |
| Rubus adamsii | GB, VC16 West Kent, Cobham | William Charles Richard Watson | William Charles Richard Watson | 25/7/1946 | SLBI |
| Rubus rudis | GB, VC16 West Kent, Hayes Common | William Charles Richard Watson | William Charles Richard Watson | 27/6/1952 | SLBI |
| Rubus subinermoides | GB, VC16 West Kent, Tunbridge Wells | William Charles Richard Watson | William Charles Richard Watson | 14/8/1950 | SLBI |
| Rubus holerythros | GB, VC17 Surrey, Littleworth Common, Esher | William Charles Richard Watson | William Charles Richard Watson | 10/7/1936 | SLBI |
| Rubus phaeocarpus | GB, VC17 Surrey, Roehampton | William Charles Richard Watson | William Charles Richard Watson | 30/8/1928 | SLBI |
| Rubus affinis | GB, VC17 Surrey, Wimbledon Common Cultivated | William Charles Richard Watson | William Charles Richard Watson | 3/8/1950 | SLBI |
| Rubus robiae | GB, VC20 Hertfordshire, Mardley Heath | William Charles Richard Watson | William Charles Richard Watson | 24/7/1953 | SLBI |
| Rubus robiae | GB, VC20 Hertfordshire, Mardley Heath | William Charles Richard Watson | William Charles Richard Watson | 24/7/1953 | SLBI |
| Rubus atrebatum | GB, VC22 Berkshire, Crowthorne | William Charles Richard Watson | William Charles Richard Watson | 8/7/1936 | SLBI |
| Rubus angusticuspis | GB, VC36 Herefordshire, Hope Mansell | William Charles Richard Watson | William Charles Richard Watson | 20/7/1932 | SLBI |
| Rubus bartonii | GB, VC48 Merionethshire, Dolgellau | William Charles Richard Watson | William Charles Richard Watson | 26/6/1948 | SLBI |
| Rubus bartonii | GB, VC48 Merionethshire, Dolgellau | William Charles Richard Watson | William Charles Richard Watson | 26/6/1948 | SLBI |
| Rubus pallidus | GB, VC62 North-east Yorkshire, Pilmoor | Catherine Muriel Rob | William Charles Richard Watson | 21/7/1947 | SLBI |
| Rubus altiarcuatus | IE, VCH2 North Kerry, Torc | William Charles Richard Watson | William Charles Richard Watson | 13/8/1935 | SLBI |
| Callitriche obtusangula | GB, VC16 West Kent, Tunbridge Wells | Herbert Cecil Pugsley Herbert William Pugsley | William Charles Richard Watson | 31/5/1931 | SLBI |
| Rubus tresidderi | GB, VC1 West Cornwall, Lambourne | Francis Rilstone | William Charles Richard Watson | 7/1949 | SLBI |
| Rubus septentrionalis | GB, VC105 West Ross & Cromarty, Croe Bridge | Edmund Frederic Warburg | William Charles Richard Watson | 7/8/1948 | SLBI |
| Rubus carnkiefensis | GB, VC1 West Cornwall, Carnkief | William Charles Richard Watson | William Charles Richard Watson | 11/7/1951 | SLBI |
| Rubus septentrionalis | GB, VC1 West Cornwall, Carnkief | William Charles Richard Watson | William Charles Richard Watson | 11/7/1951 | SLBI |
| Rubus riddelsdellii | GB, VC1 West Cornwall, Newlyn Downs | William Charles Richard Watson | William Charles Richard Watson | 11/7/1951 | SLBI |
| Rubus daveyi | GB, VC1 West Cornwall, Truro,Chiverton | William Charles Richard Watson | William Charles Richard Watson | 11/7/1951 | SLBI |
| Rubus rilstonei | GB, VC2 East Cornwall, Polperro | William Charles Richard Watson | William Charles Richard Watson | 8/7/1926 | SLBI |
| Rubus fuscoviridis | GB, VC2 East Cornwall, Polperro | William Charles Richard Watson | William Charles Richard Watson | 7/7/1951 | SLBI |
| Rubus newbouldianus | GB, VC2 East Cornwall, Port Gaverne Cultivated | William Charles Richard Watson | | 20/6/1950 | SLBI |
| Rubus peninsulae | GB, VC2 East Cornwall, Restormel Cultivated | William Charles Richard Watson | | 28/7/1954 | SLBI |
| Rubus coombensis | GB, VC3 South Devon, Bickleigh | William Charles Richard Watson | William Charles Richard Watson | 6/7/1951 | SLBI |
| Rubus sagittarius | GB, VC3 South Devon, Birdshead | William Charles Richard Watson | | 17/7/1939 | SLBI |
| Rubus subopacus | GB, VC3 South Devon, Cholwicktown | William Charles Richard Watson | William Charles Richard Watson | 4/7/1951 | SLBI |
| Rubus acclivitatum | GB, VC3 South Devon, Cornwood | William Charles Richard Watson | William Charles Richard Watson | 21/7/1939 | SLBI |
| Rubus briggsianus | GB, VC3 South Devon, Cornwood | William Charles Richard Watson | William Charles Richard Watson | 4/7/1951 | SLBI |