| Rubus incurvatus | GB, VC3 South Devon, Roborough | Thomas Richard Archer Briggs | | 7/1868 | SLBI |
| Hypericum | GB, VC3 South Devon, Plym Valley | Thomas Richard Archer Briggs | Augustin Ley | 18/7/1868 | BIRM |
| Rubus pruinosus | GB, VC3 South Devon, Plymbridge | Thomas Richard Archer Briggs | | 18/7/1868 | SLBI |
| Rubus amplificatus | GB, VC3 South Devon, Plymbridge | Thomas Richard Archer Briggs | | 21/7/1868 | SLBI |
| Rubus amplificatus | GB, VC3 South Devon, Plymbridge | Thomas Richard Archer Briggs | | 21/7/1868 | SLBI |
| Rubus ulmifolius | GB, VC3 South Devon, Crabtree | Thomas Richard Archer Briggs | | 4/8/1868 | SLBI |
| Polygonum rurivagum | GB, VC3 South Devon, Plymouth | Thomas Richard Archer Briggs | Augustin Ley | 25/8/1868 | BIRM |
| Polygonum rurivagum | GB, VC3 South Devon, Plymouth | Thomas Richard Archer Briggs | Augustin Ley | 25/8/1868 | BIRM |
| Salix cinerea x aurita = S. x multinervis | GB, VC3 South Devon, Crabtree | Thomas Richard Archer Briggs | Charles Bailey | 1869 | MANCH |
| Ballota ruderalis | GB, VC33 East Gloucestershire, Gloucester Docks | Gustavus A Ornano St Brody | Thomas Richard Archer Briggs | 1869 | K |
| Polycarpon tetraphyllum | GB, VC3 South Devon, King's Tamerton, Plymouth | Thomas Richard Archer Briggs | George Stephen West | 5/1869 | BIRM |
| Polycarpon tetraphyllum | GB, VC3 South Devon, Plymouth | Thomas Richard Archer Briggs | William Hadden Beeby | 5/1869 | SLBI |
| Carex vulpina | GB, VC2 East Cornwall, Torpoint | Thomas Richard Archer Briggs | | 2/7/1869 | BM |
| Galium verum x mollugo = G. x pomeranicum | GB, VC2 East Cornwall, Whitsand Bay | Thomas Richard Archer Briggs | Charles Bailey John Harbord Lewis | 14/7/1869 | MANCH |
| Rubus hastiformis | GB, VC3 South Devon, Meavy | Thomas Richard Archer Briggs | | 14/8/1869 | SLBI |
| Pyrus cordata | GB, VC3 South Devon, Estover | Thomas Richard Archer Briggs | | 9/5/1870 | BIRM |
| Rosa canina x obtusifolia = R. x dumetorum | GB, VC2 East Cornwall, Saint Mellion | Thomas Richard Archer Briggs | Frederick Townsend | 21/6/1870 | SLBI |
| Rosa micrantha var. pedunculo-nudo | GB, VC3 South Devon, Bickleigh | Thomas Richard Archer Briggs | | 6/7/1870 | SLBI |
| Rosa obtusifolia subsp. tomentella | GB, VC3 South Devon, Lee Mill Bridge | Thomas Richard Archer Briggs | Frederick Townsend | 13/7/1870 | SLBI |
| Hypericum undulatum | GB, VC3 South Devon, Plymouth | Thomas Richard Archer Briggs | William Hadden Beeby | 8/1870 | SLBI |
| Rubus longithyrsiger | GB, VC3 South Devon, Bickleigh Vale | Thomas Richard Archer Briggs | | 9/8/1870 | SLBI |
| Sorbus devoniensis | GB, VC3 South Devon, Roborough | Thomas Richard Archer Briggs | Augustin Ley | 20/8/1870 | BIRM |
| Sorbus latifolia | GB, VC3 South Devon, Roborough | Thomas Richard Archer Briggs | Augustin Ley | 20/8/1870 | BIRM |
| Rubus sagittarius | GB, VC3 South Devon, Tamerton Foliot | Thomas Richard Archer Briggs | | 27/8/1870 | SLBI |
| Rubus sagittarius | GB, VC3 South Devon, Plym Valley | Thomas Richard Archer Briggs | | 3/9/1870 | SLBI |
| Hypericum undulatum | GB, VC3 South Devon, Plymouth | Thomas Richard Archer Briggs | Allan Octavian Hume Frederick Townsend | 10/9/1870 | SLBI |
| Sorbus devoniensis | GB, VC3 South Devon, Roborough | Thomas Richard Archer Briggs | Augustin Ley | 25/9/1870 | BIRM |
| Mespilus germanica | GB, VC2 East Cornwall, Saltash | Thomas Richard Archer Briggs | William Hadden Beeby | 5/1871 | SLBI |
| Sorbus devoniensis | GB, VC3 South Devon, Meavy | Thomas Richard Archer Briggs | William Hadden Beeby | 5/1871 | SLBI |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 4/5/1871 | MANCH |
| Pyrus cordata | GB, VC3 South Devon, Estover | Thomas Richard Archer Briggs | | 4/5/1871 | BIRM |
| Viola lactea | GB, VC3 South Devon, Bickleigh | Thomas Richard Archer Briggs | Augustin Ley | 25/5/1871 | BIRM |
| Sorbus devoniensis | GB, VC3 South Devon, Roborough | Thomas Richard Archer Briggs | | 25/5/1871 | SLBI |
| Sorbus devoniensis | GB, VC3 South Devon, Roborough | Thomas Richard Archer Briggs | Allan Octavian Hume Frederick Townsend | 25/5/1871 | SLBI |
| Mespilus germanica | GB, VC2 East Cornwall, Saltash | Thomas Richard Archer Briggs | Augustin Ley | 27/5/1871 | BIRM |
| Ranunculus sardous | GB, VC2 East Cornwall, Sheviock | Thomas Richard Archer Briggs | Augustin Ley | 5/6/1871 | BIRM |
| Carex ovalis | GB, VC3 South Devon, Tamerton Foliot | Thomas Richard Archer Briggs | | 14/6/1871 | BM |
| Avena strigosa | GB, VC3 South Devon, Tamerton Foliott | Thomas Richard Archer Briggs | Augustin Ley | 6/7/1871 | BIRM |
| Carduus crispus x nutans = C. x stangii | GB, VC3 South Devon, Elburton | Thomas Richard Archer Briggs | Charles Bailey | 8/7/1871 | MANCH |
| Carduus crispus x nutans = C. x stangii | GB, VC3 South Devon, Elburton | Thomas Richard Archer Briggs | Augustin Ley | 8/7/1871 | BIRM |