| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC89 East Perthshire, Lunan Burn | Arthur Bennett | Arthur Bennett | 18/8/1882 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC89 East Perthshire, Lunan Burn | Abram Sturrock | Botanical Exchange Club of The British Isles Arthur Bennett Augustin Ley | 18/8/1882 | BIRM |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC89 East Perthshire, Lunan Burn | A. Stunich | | 18/8/1882 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC89 East Perthshire, Marlee Loch | George Claridge Druce | Charles Bailey | 7/1883 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC90 Angus, Rescobie Loch, Forfar | Edward Shearburn Marshall | Harold Stuart Thompson | 18/7/1892 | BIRM |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC98 Argyllshire, Connel | Charles Bailey | Botanical Exchange Club of The British Isles Charles Bailey Charles Bailey | 21/7/1885 | BIRM |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC98 Argyllshire, Connel Ferry | Charles Bailey | Botanical Exchange Club of The British Isles Augustin Ley Charles Bailey | 21/7/1885 | BIRM |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC98 Argyllshire, Connel Ferry | Charles Bailey | Botanical Exchange Club of The British Isles Augustin Ley Charles Bailey | 21/7/1885 | BIRM |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC98 Argyllshire, Connel Ferry | Charles Bailey | Botanical Exchange Club of The British Isles | 21/7/1885 | SLBI |
| 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, VC98 Argyllshire, Oban | Charles Bailey | | 21/7/1885 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC99 Dunbartonshire, River Leven | L Watt | Alfred Fryer Charles Bailey | 28/8/1897 | 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 | GB, VC100 Clyde Islands, Loch Ascog | R Turner | Charles Bailey | 9/1878 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC102 South Ebudes, Bridgend | Augustin Ley | Augustin Ley | 5/9/1883 | BIRM |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC102 South Ebudes, Islay | Augustin Ley | Augustin Ley | 5/9/1883 | BIRM |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC109 Caithness, Loch of Winless | Frederick Janson Hanbury | Botanical Exchange Club of The British Isles Augustin Ley Frederick Janson Hanbury | 7/7/1886 | BIRM |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC109 Caithness, Loch of Winless | Edward Shearburn Marshall | Edward Shearburn Marshall | 6/7/1886 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC109 Caithness, Thurso | Job Edward Lousley | Job Edward Lousley | 1/7/1936 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC109 Caithness, Thurso river | William Frederick Miller | William Hadden Beeby | 20/7/1889 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC111 Orkney, Loch of Boardhouse | William Irvine Fortescue | Botanical Exchange Club of The British Isles William Hadden Beeby | 13/7/1885 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC112 Shetland, Loch of Spiggie | G W | | 7/1927 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC112 Shetland, Spiggie | | | | 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 | IE, VCH1 South Kerry, Killarney | Henry Groves James Groves | Allan Octavian Hume Henry & James Groves | 15/8/1892 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, VCH1 South Kerry, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles | 8/1888 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, VCH1 South Kerry, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Reginald Wiliam Scully | 13/8/1890 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, VCH1 South Kerry, Lower Lake | Henry Groves James Groves | Allan Octavian Hume Henry & James Groves | 15/8/1892 | SLBI |
| 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 | IE, VCH2 North Kerry, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Augustin Ley Reginald Wiliam Scully | 16/8/1888 | BIRM |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, VCH2 North Kerry, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Reginald Wiliam Scully William Hadden Beeby | 13/8/1890 | SLBI |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, VCH2 North Kerry, River Laune | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Augustin Ley Reginald Wiliam Scully | 27/7/1889 | BIRM |
| 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, Kerry, Beaufort Bridge | Richard Charles L'Estrange Burges | Job Edward Lousley | 8/1949 | SLBI |
| 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 | 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 | IE, Kerry, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Augustin Ley Reginald Wiliam Scully | 13/8/1890 | BIRM |
| 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, VCH38 Co. Down, magheralin | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Charles Bailey Coslett Herbert Waddell | 7/1904 | MANCH |