| Mentha arvensis x aquatica = M. x verticillata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Augustin Ley | 7/9/1877 | BIRM |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Cardale Babington | 30/8/1881 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Cardale Babington | 30/8/1881 | CGE |
| Mentha rubra | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Augustin Ley | 9/1872 | BIRM |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 4/5/1871 | MANCH |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey Elizabeth Anne Lomax | 13/8/1875 | MANCH |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 13/8/1876 | MANCH |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 11/5/1877 | MANCH |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 30/5/1879 | MANCH |
+ | 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 |
| Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | | 13/8/1875 | SLBI |
| Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | William Hadden Beeby | 13/8/1875 | SLBI |
+ | Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Charles Bailey | 13/8/1876 | MANCH |
+ | 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 | Botanical Exchange Club of The British Isles William Hadden Beeby | 13/9/1881 | SLBI |
| Pyrus cordata | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Botanical Exchange Club of The British Isles William Hunt Painter | 18/5/1881 | ABS |
| Rosa stylosa var. leucochroa | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | Frederick Townsend | 25/6/1878 | SLBI |
| Rubus mutabilis | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | | 23/8/1887 | BSBI |
| Rubus ramosus | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | | 8/8/1887 | BSBI |
| Rubus sagittarius | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | | 8/8/1878 | SLBI |
| Scrophularia nodosa | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | | 27/6/1890 | K |
| Sorbus devoniensis | GB, VC3 South Devon, Egg Buckland Cultivated | Thomas Richard Archer Briggs | William Hadden Beeby | 10/1884 | SLBI |
| Viola lactea | GB, VC3 South Devon, Egg Buckland | Thomas Richard Archer Briggs | William Hadden Beeby | 26/5/1876 | SLBI |
+ | Epilobium hirsutum x montanum = E. x erroneum | GB, VC3 South Devon, Eggbuckland | Thomas Richard Archer Briggs | | 2/8/1881 | 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 |
| Carex hirta | GB, VC3 South Devon, Elburton | Thomas Richard Archer Briggs | | 4/7/1874 | BM |
| Viola odorata x hirta = V. x scabra | GB, VC3 South Devon, Elburton | Thomas Richard Archer Briggs | Charles Bailey | 14/3/1876 | MANCH |
| Zostera nana | GB, VC3 South Devon, Erme Mouth | Thomas Richard Archer Briggs | | 10/7/1876 | BIRM |
+ | Zostera noltei | GB, VC3 South Devon, Erme Mouth | Thomas Richard Archer Briggs | Elizabeth Anne Lomax | 10/7/1874 | MANCH |
| Potamogeton polygonifolius | GB, VC3 South Devon, Erme Valley | Thomas Richard Archer Briggs | | 6/1876 | E |
| Carex paniculata x remota = C. x boenninghauseniana | GB, VC3 South Devon, Ermington | Thomas Richard Archer Briggs | Thomas Richard Archer Briggs | 25/5/1883 | BM |
| Mentha spicata | GB, VC3 South Devon, Ermington | Thomas Richard Archer Briggs | | 29/8/1876 | K |
| Pyrus cordata | GB, VC3 South Devon, Estover | Thomas Richard Archer Briggs | | 9/5/1870 | BIRM |
| Pyrus cordata | GB, VC3 South Devon, Estover | Thomas Richard Archer Briggs | | 4/5/1871 | BIRM |
| Pyrus cordata | GB, VC3 South Devon, Estover | Thomas Richard Archer Briggs | | 21/8/1876 | BIRM |
| Pyrus cordata | GB, VC3 South Devon, Estover | Thomas Richard Archer Briggs | | 11/5/1877 | BIRM |