+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 18/5/1881 | MANCH |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 18/5/1881 to 13/9/1881 | MANCH |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 18/5/1881 to 13/9/1881 | MANCH |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 13/9/1881 | MANCH |
| Carduus crispus x nutans = C. x stangii | GB, VC3 South Devon, Elburton | Thomas Richard Archer Briggs | Charles Bailey | 8/7/1871 | MANCH |
| Viola odorata x hirta = V. x scabra | GB, VC3 South Devon, Elburton | Thomas Richard Archer Briggs | Charles Bailey | 14/3/1876 | MANCH |
| Galium verum x mollugo = G. x pomeranicum | GB, VC3 South Devon, Mothecombe | Thomas Richard Archer Briggs | Charles Bailey | 16/7/1873 | MANCH |
| Viola odorata x hirta = V. x scabra | GB, VC3 South Devon, Plymouth | Thomas Richard Archer Briggs | Charles Bailey | 16/6/1876 | MANCH |
+ | Rumex conglomeratus x pulcher = R. x muretii | GB, VC3 South Devon, Plymouth | Thomas Richard Archer Briggs | Charles Bailey | 4/8/1879 | MANCH |
| Carex montana | GB, VC3 South Devon, Roborough Down | Thomas Richard Archer Briggs | Charles Bailey | 2/6/1873 | MANCH |
+ | Hypochaeris glabra | GB, VC3 South Devon, Torquay,Dawlish Warren | Thomas Richard Archer Briggs | Charles Bailey | 24/5/1874 | MANCH |
| Galium verum x mollugo = G. x pomeranicum | GB, VC3 South Devon, Wembury | Thomas Richard Archer Briggs | Charles Bailey | 22/7/1875 | MANCH |
| Erophila verna | GB, VC2 East Cornwall, Torpoint | Thomas Richard Archer Briggs | William Hadden Beeby | 1/4/1874 | SLBI |
+ | Illecebrum verticillatum | GB, Cornwall, Cornwall | Thomas Richard Archer Briggs | Charles Bailey Isaiah Waterloo Nicholson Keys John Barrow | 7/1866 | MANCH |
| Carex paniculata x remota = C. x boenninghauseniana | GB, VC3 South Devon, Caton | Thomas Richard Archer Briggs | Botanical Exchange Club of The British Isles John Thomas Irvine Boswell-Syme Thomas Richard Archer Briggs | 7/1879 | BM |
| Carex rostrata | GB, VC3 South Devon, Dartmoor | Thomas Richard Archer Briggs | Frederick Janson Hanbury John Thomas Irvine Boswell-Syme | 30/6/1868 | BM |
| Rumex rupestris x pulcher = R. x trimenii | GB, Devon, Plymouth GB, VC85 Fifeshire, Balmuto Cultivated | John Thomas Irvine Boswell-Syme Thomas Richard Archer Briggs | | 8/1881 | MANCH |
| Mentha arvensis | GB, VC2 East Cornwall, Anthony | Thomas Richard Archer Briggs | | 25/8/1876 | K |
| Rosa stylosa var. systyla | GB, VC2 East Cornwall, Antony | Thomas Richard Archer Briggs | William Hadden Beeby | 24/6/1875 | SLBI |
| Rubus leyanus | GB, VC2 East Cornwall, Antony | Thomas Richard Archer Briggs | | 2/9/1878 | SHYB |
| Alopecurus bulbosus | GB, VC2 East Cornwall, Calstock | Thomas Richard Archer Briggs | Botanical Exchange Club of The British Isles Robert Large Baker | 31/5/1875 | BIRM |
| Elymus pungens | GB, VC2 East Cornwall, Cremyll | Thomas Richard Archer Briggs | | 13/8/1877 | ABS |
| Brassica rapa var. briggsii | GB, VC2 East Cornwall, Empacombe | Thomas Richard Archer Briggs | | 29/7/1875 | SLBI |
| Salix cinerea subsp. oleifolia | GB, VC2 East Cornwall, Kingsand | Thomas Richard Archer Briggs | Allan Octavian Hume | 5/5/1876 | SLBI |
| Rubus longithyrsiger | GB, VC2 East Cornwall, Landrake | Thomas Richard Archer Briggs | | 13/7/1872 | SHYB |
| Rosa arvensis | GB, VC2 East Cornwall, Latchbrook | Thomas Richard Archer Briggs | | 16/9/1875 | SLBI |
| Avena strigosa | GB, VC2 East Cornwall, Looe | Thomas Richard Archer Briggs | | 10/7/1871 | BON |
+ | Pyrus cordata | GB, VC2 East Cornwall, Saint John | Thomas Richard Archer Briggs | | 1877 | BIRM |
| Lobelia urens | GB, VC2 East Cornwall, Saint Lostwithiel | Thomas Richard Archer Briggs | Botanical Exchange Club of The British Isles William Hadden Beeby | 10/10/1883 | SLBI |
| Mespilus germanica | GB, VC2 East Cornwall, Saltash | Thomas Richard Archer Briggs | William Hadden Beeby | 5/1871 | SLBI |
| Rosa obtusifolia subsp. tomentella | GB, VC2 East Cornwall, Sheviock | Thomas Richard Archer Briggs | | 12/7/1875 | SLBI |
| Carex vulpina | GB, VC2 East Cornwall, Torpoint | Thomas Richard Archer Briggs | | 2/7/1869 | BM |
| Mentha arvensis | GB, VC2 East Cornwall, Tregantle | Thomas Richard Archer Briggs | | 25/8/1876 | K |
| Rumex rupestris | GB, VC2 East Cornwall, Whitsand | Thomas Richard Archer Briggs | London Natural History Society | 27/7/1877 | SLBI |
| Rumex rupestris | GB, VC2 East Cornwall, Whitsand Bay | Thomas Richard Archer Briggs | | 9/8/1875 | SLBI |
+ | Rumex rupestris | GB, VC2 East Cornwall, Whitsand Bay | Thomas Richard Archer Briggs | | 31/7/1876 | MANCH |
| Rumex rupestris | GB, VC2 East Cornwall, Whitsand Bay | Thomas Richard Archer Briggs | Robert Large Baker | 27/7/1877 | BIRM |
+ | Schoenoplectus triqueter | GB, Cornwall, Cornwall | Thomas Richard Archer Briggs | Charles Bailey | 7/9/1875 | MANCH |
| Eleocharis parvula | GB, VC3 South Devon, Aveton Gifford | Thomas Richard Archer Briggs | William Hillhouse | 8/1880 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC3 South Devon, Bere Alston | Thomas Richard Archer Briggs | | 26/8/1890 | K |