| Aconitum napellus | GB, VC36 Herefordshire, Little Hereford | William Charles Richard Watson | | 14/6/1946 | SLBI |
| Alchemilla alpina | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Alchemilla glabra | GB, VC42 Breconshire, Penderyn | William Charles Richard Watson | William Charles Richard Watson | 16/6/1946 | SLBI |
| Armeria maritima | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 7/1927 | SLBI |
| Callitriche obtusangula | GB, VC16 West Kent, Tunbridge Wells | Herbert Cecil Pugsley Herbert William Pugsley | William Charles Richard Watson | 31/5/1931 | SLBI |
| Carex atrata | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Carex contigua | GB, VC17 Surrey, Wimbledon Common | William Charles Richard Watson | William Charles Richard Watson | 25/6/1946 | SLBI |
| Carex divulsa | GB, VC17 Surrey, Wimbledon Common | William Charles Richard Watson | | 25/6/1943 | SLBI |
| Carex echinata | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 12/7/1927 | SLBI |
| Carex nigra | GB, VC17 Surrey, Wimbledon Common | William Charles Richard Watson | | 14/5/1946 | SLBI |
| Cerastium alpinum | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Crataegus laevigata | GB, VC16 West Kent, Hayes Common | William Charles Richard Watson | Allan Octavian Hume | 1/7/1911 | SLBI |
| Dactylorhiza fuchsii | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 7/1927 | SLBI |
| Draba norvegica | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Eleocharis quinqueflora | GB, VC42 Breconshire, Penderyn | | William Charles Richard Watson | 16/6/1946 | SLBI |
| Euphrasia curta | GB, VC17 Surrey, Selsdon Wood | | William Charles Richard Watson | 2/10/1946 | SLBI |
| Foeniculum vulgare | GB, VC37 Worcestershire, Upton on Severn | William Charles Richard Watson | | 13/6/1946 | SLBI |
| Frangula alnus | GB, VC16 West Kent, Hayes Common | William Charles Richard Watson | Allan Octavian Hume | 22/7/1911 | SLBI |
| Gentianella campestris | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 7/1927 | SLBI |
| Hieracium | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Hieracium cillense | GB, VC42 Breconshire, Craig y Cilau | William Charles Richard Watson | | 15/6/1946 | SLBI |
| Hieracium sect. Hieracium | GB, VC35 Monmouthshire, Tintern,Wyndcliff | William Charles Richard Watson | William Charles Richard Watson | 19/6/1946 | SLBI |
| Juncus trifidus | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Lepidium campestre | GB, VC17 Surrey, Beverley Flat | William Charles Richard Watson | | 25/6/1946 | SLBI |
| Luzula multiflora subsp. congesta | GB, VC17 Surrey, Putney Heath | William Charles Richard Watson | | 25/6/1946 | SLBI |
| Melampyrum sylvaticum | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Melampyrum sylvaticum | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Minuartia rubella | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | William Charles Richard Watson | 8/7/1927 | SLBI |
| Pedicularis palustris | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 7/1927 | SLBI |
| Persicaria vivipara | GB, VC88 Mid Perthshire, Ben Lawers | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Populus nigra | GB, VC16 West Kent, High Elms | William Charles Richard Watson | William Charles Richard Watson | 29/6/1946 | SLBI |
| Rorippa nasturtium-aquaticum | GB, VC42 Breconshire, Penderyn | William Charles Richard Watson | William Charles Richard Watson | 16/6/1946 | SLBI |
| Rosa agrestis | GB, VC17 Surrey, Wimbledon Common | William Charles Richard Watson | | 25/6/1946 | SLBI |
| Rosa caesia subsp. caesia | GB, VC17 Surrey, Wimbledon Common | William Charles Richard Watson | | 25/6/1946 | SLBI |
| Rosa canina | GB, VC17 Surrey, Wimbledon | William Charles Richard Watson | | 25/6/1946 | SLBI |
| Rosa canina x sherardii = R. x rothschildii | GB, VC17 Surrey, Wimbledon | William Charles Richard Watson | | 25/6/1946 | SLBI |
| Rosa obtusifolia subsp. tomentella | GB, VC17 Surrey, Horsell Common | W Biddiscombe | William Charles Richard Watson | 24/8/1931 | SLBI |
| Rosa obtusifolia subsp. tomentella | GB, VC17 Surrey, Rose Copse | William Charles Richard Watson | | 26/6/1946 | SLBI |
| Rubus | GB, VC14 East Sussex, Wych Cross | William Charles Richard Watson | William Charles Richard Watson | 16/7/1936 | SLBI |
| Rubus acclivitatum | GB, VC3 South Devon, Cornwood | William Charles Richard Watson | William Charles Richard Watson | 21/7/1939 | SLBI |