| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC112 Shetland, Spiggie | | | | 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 gramineus x perfoliatus = P. x nitens | GB, VC32 Northamptonshire, Peterborough, Borough Fen | George Claridge Druce | Druce Herbarium, Oxford Charles Bailey | 1/7/1910 | MANCH |
| Potamogeton perfoliatus | GB, VC57 Derbyshire, Spondon | | Manchester Museum (Owens College) William Hunt Painter | 6/1876 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC54 North Lincolnshire, Belton | George Taylor | The British Museum | 2/8/1941 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC69 Westmorland, Eamont Bridge | Catherine Muriel Rob | | 18/9/1949 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC36 Herefordshire, Red Rail | George Taylor | The British Museum | 28/7/1948 | MANCH |
| Potamogeton perfoliatus x crispus = P. x cooperi | GB, VC20 Hertfordshire, Tring | James Edgar Dandy | The British Museum | 14/8/1949 | MANCH |
| Potamogeton perfoliatus | GB, VC59 South Lancashire, Astley | | Tyldesley Museum Natural History Society | 1895 | MANCH |
| Potamogeton perfoliatus | GB, VC59 South Lancashire, Droylsden | A Croker | University of Manchester | 28/8/1948 | MANCH |
| Potamogeton perfoliatus | GB, VC59 South Lancashire, Droylsden | A Croker | University of Manchester | 17/8/1948 | MANCH |
| Potamogeton perfoliatus | GB, VC59 South Lancashire, Droylsden | A Croker | University of Manchester | 7/9/1948 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC80 Roxburghshire, Roxburgh | E J Archer | Charles Bailey | 7/1876 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC88 Mid Perthshire, Perth | John Thomas Irvine Boswell-Syme | Charles Bailey | 9/1869 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC98 Argyllshire, Oban | Charles Bailey | Botanical Exchange Club of The British Isles Charles Bailey | 21/7/1885 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC98 Argyllshire, Oban | Charles Bailey | Charles Bailey | 21/7/1885 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC17 Surrey, Frimley | Arthur Bennett | Botanical Exchange Club of The British Isles Charles Bailey Eyre Champion de Crespigny | 8/1888 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC17 Surrey, Frimley | Arthur Bennett | Botanical Exchange Club of The British Isles Charles Bailey | 8/1888 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC98 Argyllshire, Oban | Charles Bailey | | 21/7/1885 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, VCH2 North Kerry, Ballymalis Castle | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Charles Bailey Reginald Wiliam Scully | 27/7/1889 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC88 Mid Perthshire, River Tay | John Sim | Charles Bailey | 7/1865 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC100 Clyde Islands, Loch Ascog | George Edward Hunt | Charles Bailey George Edward Hunt | 7/1866 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, Kerry, Beaufort | Reginald Wiliam Scully | Charles Bailey Reginald Wiliam Scully | 27/7/1889 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, VCH1 South Kerry, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Charles Bailey | 13/8/1890 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC29 Cambridgeshire, Whittlesea | Alfred Fryer | Alfred Fryer Charles Bailey | 15/9/1894 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, VCH38 Co. Down, magheralin | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Charles Bailey Coslett Herbert Waddell | 7/1904 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC17 Surrey, Pirbright | William Hadden Beeby | Alfred Fryer Charles Bailey | 12/8/1888 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC17 Surrey, Frimley | William Hadden Beeby | Alfred Fryer Charles Bailey | 12/8/1888 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, Kerry, Cahernane, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Charles Bailey Reginald Wiliam Scully | 8/1888 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC29 Cambridgeshire, Whittlesea | Alfred Fryer | Alfred Fryer Charles Bailey | 25/6/1895 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC58 Cheshire, Hale Moss | | Charles Bailey | 7/1859 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, Kerry, Lower Lake, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Charles Bailey Eyre Champion de Crespigny Reginald Wiliam Scully | 8/1888 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, Kerry, Cahernane, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Charles Bailey Elizabeth Anne Lomax Reginald Wiliam Scully | 8/1888 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC29 Cambridgeshire, Whittlesea | Alfred Fryer | Botanical Exchange Club of The British Isles Charles Bailey | 15/9/1894 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC29 Cambridgeshire, Whittlesea,Blackbush Drain | Alfred Fryer | Alfred Fryer Charles Bailey | 16/8/1895 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC29 Cambridgeshire, Whittlesea,Blackbush Drain | Alfred Fryer | Alfred Fryer Charles Bailey | 22/6/1895 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC29 Cambridgeshire, Whittlesea,Blackbush Drain | Alfred Fryer | Alfred Fryer Charles Bailey | 25/6/1895 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC29 Cambridgeshire, Whittlesea | Alfred Fryer | Charles Bailey | 18/9/1894 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC29 Cambridgeshire, Whittlesea | Alfred Fryer | Alfred Fryer | 16/8/1895 | MANCH |