| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Weeton | Edward Charles Wallace | Botanical Society & Exchange Club of The British Isles | 3/5/1943 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Newby | Edward Charles Wallace | Botanical Society & Exchange Club of The British Isles | 24/7/1943 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Weston | Edward Charles Wallace | Botanical Society & Exchange Club of The British Isles | 3/8/1943 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Weston | Edward Charles Wallace | Botanical Society & Exchange Club of The British Isles | 3/8/1943 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Leathley | George Taylor | British Museum (Natural History) | 17/8/1940 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC65 North-west Yorkshire, Langthorpe | George Taylor | The British Museum | 4/8/1944 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Harewood | George Taylor | The British Museum | 2/8/1940 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC65 North-west Yorkshire, West Tanfield | George Taylor | The British Museum | 29/8/1940 | MANCH |
+ | Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Ripon (near),River Ure | H H Slater | Charles Bailey H H Slater | 9/1881 | MANCH |
| Potamogeton pectinatus | GB, VC1 West Cornwall, Penzance | Elizabeth Anne Lomax | Botanical Exchange Club Charles Bailey | 8/1875 | MANCH |
| Potamogeton pectinatus | GB, VC34 West Gloucestershire, Bristol | William Booth Waterfall | Botanical Exchange Club Charles Bailey | 4/8/1879 | MANCH |
| Potamogeton pectinatus | GB, VC62 North-east Yorkshire, Aldlwark Bridge | George Taylor | British Museum (Natural History) | 11/6/1941 | MANCH |
| Potamogeton pectinatus | GB, VC57 Derbyshire, Derby | | Manchester Museum (Owens College) William Hunt Painter | 7/1877 | MANCH |
| Potamogeton pectinatus | | J Makin | Tyldesley Museum Natural History Society | | MANCH |
| Potamogeton pectinatus | GB, VC59 South Lancashire, Droylsden | A Croker | University of Manchester | 28/8/1948 | MANCH |
| Potamogeton pectinatus | GB, VC58,VC59, Reddish | A Croker | University of Manchester | 3/8/1948 | MANCH |
| Potamogeton pectinatus | GB, VC13 West Sussex, Pagham Harbour | Joseph Edward Little | Watson Botanical Exchange Club Joseph Edward Little | 15/6/1914 | MANCH |
| Potamogeton pectinatus | GB, VC30 Bedfordshire, Southill | Joseph Edward Little | Watson Botanical Exchange Club Arthur Bennett Joseph Edward Little | 27/6/1913 to 12/7/1913 | MANCH |
| Potamogeton pectinatus | GB, VC83 Midlothian, Duddingston Loch | Charles Bailey | Charles Bailey | 12/8/1882 | MANCH |
| Potamogeton pectinatus | GB, VC57 Derbyshire, Cromford Canal | Charles Bailey | Charles Bailey | 28/7/1884 | MANCH |
| Potamogeton pectinatus | GB, VC55 Leicestershire, Brookeby | Frederick Thompson Mott | Charles Bailey Frederick Thompson Mott Thomas Thorp | 8/1885 | MANCH |
| Potamogeton pectinatus | GB, VC29 Cambridgeshire, Whittlesea,Blackbush Drain | Alfred Fryer | Alfred Fryer Charles Bailey | 19/8/1897 | MANCH |
| Potamogeton pectinatus | GB, VC58 Cheshire, Moreton | Henry Smith Fisher | Charles Bailey John Harbord Lewis | 9/1871 | MANCH |
| Potamogeton pectinatus | GB, VC29 Cambridgeshire, Welches Dam | Alfred Fryer | Alfred Fryer Charles Bailey | 12/8/1887 | MANCH |
| Potamogeton pectinatus | GB, VC15 East Kent, Sandwich | Edward Shearburn Marshall | Charles Bailey Edward Shearburn Marshall Eyre Champion de Crespigny | 6/7/1893 | MANCH |
| Potamogeton pectinatus | GB, VC55 Leicestershire, Brooksby | Frederick Thompson Mott | Charles Bailey Frederick Thompson Mott Thomas Thorp | 8/1885 | MANCH |
| Potamogeton pectinatus | GB, VC111 Orkney, Loch of Kirbister | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles Charles Bailey | 8/1880 | MANCH |
| Potamogeton pectinatus | GB, VC38 Warwickshire, Warwick | William Groves Perry | Charles Bailey William Lowndes Notcutt | 5/1844 | MANCH |
| Potamogeton pectinatus | GB, VC11 South Hampshire, Hill Head | William Lowndes Notcutt | Charles Bailey William Lowndes Notcutt | 5/1844 | MANCH |
| Potamogeton pectinatus | GB, VC31 Huntingdonshire, Ramsey | Alfred Fryer | Botanical Exchange Club of The British Isles Charles Bailey | 21/8/1885 | MANCH |
| Potamogeton pectinatus | GB, VC55 Leicestershire, Ratcliffe | Frederick Thompson Mott | Charles Bailey Thomas Thorp | 20/6/1878 | MANCH |
| Potamogeton pectinatus | GB, VC58 Cheshire, Rostherne Mere | Charles Bailey | Charles Bailey | 13/8/1892 | MANCH |
| Potamogeton pectinatus | GB, VC58 Cheshire, Meols | Charles Bailey | Charles Bailey | 1/9/1906 | MANCH |
| Potamogeton pectinatus | GB, VC58 Cheshire, Birkenhead | Charles Bailey | Charles Bailey | 29/8/1885 | MANCH |
| Potamogeton pectinatus | GB, VC57 Derbyshire, Cromford | Charles Bailey | Charles Bailey | 17/7/1884 | MANCH |
| Potamogeton pectinatus | GB, VC62 North-east Yorkshire, Coatham | James Ward | Richmond Museum Charles Bailey | 8/1860 | MANCH |
| Potamogeton pectinatus | GB, VC38 Warwickshire, Warwick | Robert Large Baker | Charles Bailey | 5/8/1881 | MANCH |
| Potamogeton pectinatus | GB, VC29 Cambridgeshire, Benwick | Alfred Fryer | Alfred Fryer Charles Bailey | 13/9/1897 | MANCH |
| Potamogeton pectinatus | GB, VC58 Cheshire, Wallasey | Alban Edward Lomax | Alban Edward Lomax Charles Bailey Eyre Champion de Crespigny | 24/6/1890 | MANCH |
| Potamogeton pectinatus | GB, VC57 Derbyshire, Cromford Canal at Cromford | Charles Bailey | Charles Bailey | 18/7/1884 | MANCH |