| Myriophyllum alterniflorum | Laughton | Joseph Woods | Allan Octavian Hume Frederick Townsend | 16/6/1842 | SLBI |
| Myriophyllum alterniflorum | GB, VC1 West Cornwall, Helston | Frederick Hamilton Davey | Allan Octavian Hume | 17/8/1900 | SLBI |
| Myriophyllum alterniflorum | GB, VC1 West Cornwall, Kynance Cove | William Hadden Beeby | | 24/6/1872 | SLBI |
| Myriophyllum alterniflorum | GB, VC1 West Cornwall, Loe Pool | Frederick Hamilton Davey | | 17/8/1900 | SLBI |
| Myriophyllum alterniflorum | GB, VC2 East Cornwall, Launceston | William Wise | | 8/1887 | LAUS |
| Myriophyllum alterniflorum | GB, VC2 East Cornwall, Liskeard | Allan Octavian Hume | Allan Octavian Hume | 8/8/1900 | SLBI |
| Myriophyllum alterniflorum | GB, VC2,VC3, River Tamar | Edward Palmer | | 6/1836 | SLBI |
| Myriophyllum alterniflorum | GB, VC6 North Somerset, Nailsea | James Walter White | Allan Octavian Hume | 20/5/1902 | SLBI |
| Myriophyllum alterniflorum | GB, VC6 North Somerset, Nailsea | James Walter White | Allan Octavian Hume | 20/5/1902 | SLBI |
| Myriophyllum alterniflorum | GB, VC6 North Somerset, Nailsea | James Walter White | | 20/5/1902 | SLBI |
| Myriophyllum alterniflorum | GB, VC6 North Somerset, Nailsea Moor | James Walter White | William Hunt Painter | 20/5/1902 | ABS |
| Myriophyllum alterniflorum | GB, VC11 South Hampshire, Beaulieu River | | Frederick Townsend | 8/7/1872 | SLBI |
| Myriophyllum alterniflorum | GB, VC11 South Hampshire, Highland Water | Patrick Martin Hall | Richard Barker Ullman | 28/7/1929 | SLBI |
| Myriophyllum alterniflorum | GB, VC11 South Hampshire, Lyndhurst | Richard Barker Ullman | Richard Barker Ullman | 28/7/1929 | SLBI |
| Myriophyllum alterniflorum | GB, VC14 East Sussex, Copthorne | William Hadden Beeby | William Hadden Beeby | 24/6/1883 | SLBI |
| Myriophyllum alterniflorum | GB, VC16 West Kent, Gravesend | | Croydon Natural History and Scientific Society | 6/1867 | SLBI |
| Myriophyllum alterniflorum | GB, VC17 Surrey, Felbridge | William Hadden Beeby | | 15/6/1884 | SLBI |
| Myriophyllum alterniflorum | GB, VC17 Surrey, Hedge Court Pond | William Hadden Beeby | | 4/11/1883 | SLBI |
| Myriophyllum alterniflorum | GB, VC17 Surrey, Hedge Court Pond | William Hadden Beeby | William Hadden Beeby | 15/7/1883 | SLBI |
| Myriophyllum alterniflorum | GB, VC17 Surrey, Pyrford Green | S A Chambers | | 11/6/1901 | SLBI |
| Myriophyllum alterniflorum | GB, VC17 Surrey, Thursley Common | Edward Shearburn Marshall | Edward Shearburn Marshall | 5/9/1891 | SLBI |
| Myriophyllum alterniflorum | GB, VC17 Surrey, Virginia Water | Frederick Townsend | Allan Octavian Hume Frederick Townsend | | SLBI |
| Myriophyllum alterniflorum | GB, VC17 Surrey, Wire mill pond | William Hadden Beeby | William Hadden Beeby | 15/7/1883 | SLBI |
| Myriophyllum alterniflorum | GB, VC17 Surrey, Woking | William Hadden Beeby | | 21/6/1884 | SLBI |
| Myriophyllum alterniflorum | GB, VC18 South Essex, Tyler's
Common, Romford | Ken Hill | | 7/11/1993 | SLBI |
| Myriophyllum alterniflorum | GB, VC21 Middlesex, Staines Moor | Philip Henry Cooke | London Natural History Society | 23/7/1941 | SLBI |
| Myriophyllum alterniflorum | GB, VC40 Shropshire, Marton | Alan | | 1893 | SHYB |
| Myriophyllum alterniflorum | GB, VC49 Caernarvonshire, Llyn Padarn | | | 24/7/1897 | DBC |
| Myriophyllum alterniflorum | GB, VC55 Leicestershire, Twycross | | Frederick Townsend | 6/1843 | SLBI |
| Myriophyllum alterniflorum | GB, VC58 Cheshire, Hilbre Island | Alban Edward Lomax | Alban Edward Lomax William Hunt Painter | 17/5/1882 | ABS |
| Myriophyllum alterniflorum | GB, VC61 South-east Yorkshire, Staddlethorpe | | Croydon Natural History and Scientific Society | 8/6/1878 | SLBI |
| Myriophyllum alterniflorum | GB, VC62 North-east Yorkshire, Castle Howard | Isaac A Helsby | Isaac A Helsby | 13/6/1935 | SLBI |
| Myriophyllum alterniflorum | GB, VC72 Dumfriesshire, Loch | Frederick Townsend | | 1856 | SLBI |
| Myriophyllum alterniflorum | GB, VC72 Dumfriesshire, Lochmaben | A Hamburgh | Frederick Townsend | 7/1856 | SLBI |
| Myriophyllum alterniflorum | GB, VC98 Argyllshire, Loch Tulla | Edward Charles Wallace Robert MacKechnie | John Richard Wallis | 6/7/1943 | SLBI |
| Myriophyllum alterniflorum | GB, VC102 South Ebudes, Colonsay, Traigh nam Barc | Ken Hill | | 20/6/1996 | SLBI |
| Myriophyllum alterniflorum | GB, VC105 West Ross & Cromarty, Inverinate | Harold Goodman Dixon Hugh Neville Dixon | Hugh Neville Dixon Leslie Beeching Hall | 7/1883 | SLBI |