+ | Peucedanum ostruthium | GB, VC80 Roxburghshire | Andrew Brotherston | Charles Bailey | 7/1879 | MANCH |
| Peucedanum ostruthium | GB, VC80,VC81, Dryburgh | Andrew Brotherston | George Stephen West John Harbord Lewis | 6/1876 | BIRM |
| Picris hieracioides | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | William Hunt Painter | 6/1878 | ABS |
| Picris hieracioides | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | George Stephen West John Harbord Lewis | 6/1876 | BIRM |
| Picris hieracioides | GB, VC80 Roxburghshire, Kelso, Springhall | Andrew Brotherston | Augustin Ley | 6/1876 | BIRM |
| Pilosella aurantiaca | GB, VC81 Berwickshire, The Hirsel | Andrew Brotherston | Andrew Brotherston | 7/1875 | SLBI |
| Plantago lanceolata var. bakeri | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | | 7/1878 | K |
| Poa chaixii | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | Augustin Ley | 6/1875 | BIRM |
| Poa nemoralis | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | Andrew Brotherston | 7/1871 | BON |
| Polycarpon tetraphyllum | GB, VC79 Selkirkshire, Galashiels | Andrew Brotherston | Botanical Exchange Club of The British Isles George Stephen West Robert Large Baker | 7/1874 | BIRM |
| Potamogeton gramineus | GB, VC79 Selkirkshire, Alemuir Loch | Andrew Brotherston | Bailey | 9/1879 | MANCH |
| Potamogeton gramineus | GB, VC81 Berwickshire, Coldingham | Andrew Brotherston | | 8/1877 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC80 Roxburghshire, Sprouston | Andrew Brotherston | | 8/1875 | BON |
| Potamogeton lucens | GB, VC80 Roxburghshire, Roxburgh | Andrew Brotherston | Andrew Brotherston Charles Bailey | 7/1870 | MANCH |
| Potamogeton lucens | GB, VC80 Roxburghshire, Roxburgh Castle, Kelso | Andrew Brotherston | | 7/1876 | E |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC80 Roxburghshire, Cauldshields Loch | Arthur Bennett | Botanical Exchange Club Andrew Brotherston Charles Bailey | 1879 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC80 Roxburghshire, Cauldshields Loch | Andrew Brotherston | | 8/8/1879 | SLBI |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC80 Roxburghshire, Cauldshiels | Andrew Brotherston | Botanical Exchange Club Charles Bailey | 9/8/1879 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC80 Roxburghshire, Cauldshiels | Alexander Hay Borthwick | Charles Bailey Andrew Brotherston | 6/1876 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC80 Roxburghshire, Cauldshiels | Andrew Brotherston | Charles Bailey | 7/1876 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC80 Roxburghshire, Cauldshiels | Andrew Brotherston | Botanical Exchange Club of The British Isles Augustin Ley | 8/1878 | BIRM |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC80 Roxburghshire, Melrose | Andrew Brotherston | Charles Bailey | 9/8/1879 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC80 Roxburghshire, Melrose | Andrew Brotherston | Botanical Exchange Club of The British Isles Charles Bailey | 13/8/1878 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | Charles Bailey | 5/8/1875 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, River Teviot | Andrew Brotherston | Botanical Exchange Club of The British Isles Charles Bailey | 21/6/1882 to 31/8/1882 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, Roxburgh | Andrew Brotherston | Botanical Exchange Club Charles Bailey | 7/1875 to 8/1875 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, Roxburgh | Andrew Brotherston | Botanical Exchange Club Charles Bailey | 7/1876 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, Roxburgh | Andrew Brotherston | Charles Bailey | 7/1876 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, Roxburgh Castle | Andrew Brotherston | George Stephen West | 7/1876 | BIRM |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, Scurry Rock | Andrew Brotherston | Botanical Exchange Club of The British Isles William Hadden Beeby | 8/1875 | SLBI |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, Sprouston | Andrew Brotherston | | 7/1875 | SLBI |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, Teviot | Andrew Brotherston | Botanical Exchange Club of The British Isles William Hadden Beeby | 31/8/1882 | SLBI |
| Potamogeton natans | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | Andrew Brotherston Charles Bailey | 9/1874 | MANCH |
| Potamogeton natans | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | Andrew Brotherston William Hadden Beeby | 7/1875 | SLBI |
| Potamogeton obtusifolius | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | George Stephen West | 9/1874 | BIRM |
| Potamogeton pectinatus | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | Charles Bailey | 7/1875 | MANCH |
| Potamogeton pusillus | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | Andrew Brotherston Charles Bailey John Harbord Lewis | 9/1874 | MANCH |
+ | Potentilla argentea | GB, VC80 Roxburghshire, Stichill | Andrew Brotherston | Andrew Brotherston Charles Bailey | 7/1874 | MANCH |
+ | Pyrola media | GB, VC73 Kirkcudbrightshire, Rutherford | Andrew Brotherston | Charles Bailey | 7/1879 | MANCH |
+ | Ranunculus arvensis | GB, VC80 Roxburghshire, Kelso,Tweedside | Andrew Brotherston | Andrew Brotherston Charles Bailey | 6/1876 | MANCH |