| Potamogeton polygonifolius | | | | | BON |
| Potamogeton polygonifolius | | | Philip Brookes Mason | | BON |
| Potamogeton polygonifolius | | | Charles Murchison Robert Kaye Greville | | E |
| Potamogeton polygonifolius | Leurich | Philip Brookes Mason | Philip Brookes Mason | | BON |
| Potamogeton polygonifolius | GB, VC1 West Cornwall, Kynance | | | 20/6/1873 | SLBI |
| Potamogeton polygonifolius | GB, VC1 West Cornwall, Lizard | William Curnow | Charles Bailey | 6/1876 | MANCH |
| Potamogeton polygonifolius | GB, VC1 West Cornwall, Mullion | Job Edward Lousley | Job Edward Lousley | 3/5/1929 | SLBI |
| Potamogeton polygonifolius | GB, VC1 West Cornwall, Perranarworthal | Frederick Hamilton Davey | Allan Octavian Hume | 23/6/1900 | SLBI |
| Potamogeton polygonifolius | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Allan Octavian Hume Arthur Bennett | 6/6/1906 | SLBI |
| Potamogeton polygonifolius | GB, VC1 West Cornwall, Sennen | | | 10/6/1873 | SLBI |
| Potamogeton polygonifolius | GB, VC1 West Cornwall, Wendron,Porkellis Moor | Frederick Hamilton Davey | Allan Octavian Hume | 17/7/1900 | SLBI |
| Potamogeton polygonifolius | GB, VC2 East Cornwall, Red Moor | Allan Octavian Hume | Allan Octavian Hume Frederick Townsend | 27/5/1901 | SLBI |
| Potamogeton polygonifolius | GB, VC2 East Cornwall, Tresmeer | William Wise | | 16/8/1892 | LAUS |
| Potamogeton polygonifolius | GB, VC3 South Devon, Dartmoor | | William Hadden Beeby | 25/7/1836 | SLBI |
| Potamogeton polygonifolius | GB, VC3 South Devon, Dartmoor | William Frederick Miller | William Frederick Miller Arthur Bennett | 25/7/1885 | E |
| Potamogeton polygonifolius | GB, VC3 South Devon, Erme Valley | Thomas Richard Archer Briggs | | 6/1876 | E |
| Potamogeton polygonifolius | GB, VC4 North Devon, Belstone | William Robert Sherrin | | 7/1924 | SLBI |
| Potamogeton polygonifolius | GB, VC4 North Devon, Braunton Burrows | William Hunt Painter | | 25/5/1892 | ABS |
| Potamogeton polygonifolius | GB, VC6 North Somerset, Charterhouse | Harold Stuart Thompson | Harold Stuart Thompson | 21/7/1915 | BIRM |
| Potamogeton polygonifolius | GB, VC6 North Somerset, Lower Farm, Charterhouse | Harold Stuart Thompson | Harold Stuart Thompson | 21/7/1915 | BIRM |
| Potamogeton polygonifolius | GB, VC6 North Somerset, Shapwick | John Norton Mills John Patrick Micklethwait Brenan | John Norton Mills | 4/7/1944 | MANCH |
| Potamogeton polygonifolius | GB, VC6 North Somerset, Walton Moor | Harold Stuart Thompson | Harold Stuart Thompson | 30/8/1925 | BIRM |
| Potamogeton polygonifolius | GB, VC6 North Somerset, Weston in Gordano | Harold Stuart Thompson | Harold Stuart Thompson | 4/8/1916 | BIRM |
| Potamogeton polygonifolius | GB, Somerset, Blackdown | Harold Stuart Thompson | Harold Stuart Thompson | 9/6/1924 | BIRM |
| Potamogeton polygonifolius | GB, Somerset, Blackdown | Harold Stuart Thompson | Harold Stuart Thompson | 25/9/1915 | BIRM |
| Potamogeton polygonifolius | GB, VC10 Isle of Wight, Freshwater | A Hamburgh | Frederick Townsend | 1849 | SLBI |
| Potamogeton polygonifolius | GB, VC10 Isle of Wight, Freshwater Marsh | A Hamburgh | | 1849 | SLBI |
| Potamogeton polygonifolius | GB, VC10 Isle of Wight, Sandown | Frederick Townsend | | 5/1838 | SLBI |
| Potamogeton polygonifolius | GB, VC10 Isle of Wight, Wilderness | Frederick Townsend | Albert John Hambrough | 6/1844 | SLBI |
| Potamogeton polygonifolius | GB, VC11 South Hampshire, Boscombe | Frederick Townsend | Allan Octavian Hume | 1872 | SLBI |
| Potamogeton polygonifolius | GB, VC11 South Hampshire, Highland Water | | Enid M MacAlister Hall | 14/8/1931 | E |
| Potamogeton polygonifolius | GB, VC11 South Hampshire, Lyndhurst | Thomas Bates Blow | Thomas Bates Blow | 8/1876 | E |
| Potamogeton polygonifolius | GB, VC11 South Hampshire, Moordown | William Robert Sherrin | | 6/1922 | SLBI |
| Potamogeton polygonifolius | GB, VC11 South Hampshire, Shedfield | Frederick Townsend | Frederick Townsend | 3/5/1871 | SLBI |
| Potamogeton polygonifolius | GB, VC11 South Hampshire, Titchfield Common | | | | MANCH |
| Potamogeton polygonifolius | GB, VC13 West Sussex, Chichester | William Williamson Newbould | John Hardy | 10/1843 | MANCH |
| Potamogeton polygonifolius | GB, VC13 West Sussex, Graffham | Charles Edgar Salmon Edward Shearburn Marshall | Charles Edgar Salmon | 26/6/1901 | SLBI |
| Potamogeton polygonifolius | GB, VC14 East Sussex, Ashdown Forest | Joseph Woods | | 14/6/1839 | SLBI |
| Potamogeton polygonifolius | GB, VC14 East Sussex, Ashdown Forest | Joseph Woods | Allan Octavian Hume Frederick Townsend | 12/8/1845 | SLBI |
| Potamogeton polygonifolius | GB, VC14 East Sussex, Copthorne | | | 21/3/1880 | SLBI |