| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Whitwell | Kirby Trimmer | The British Museum | 28/8/1883 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC27 East Norfolk, Whitwell | Kirby Trimmer | The British Museum Watson Botanical Exchange Club Arthur Bennett Charles Edgar Salmon | 28/8/1883 | CGE |
| Mentha x piperita | GB, VC27 East Norfolk, Whitwell | Kirby Trimmer | The British Museum Watson Botanical Exchange Club Albert Bruce Jackson Arthur Bennett Charles Edgar Salmon | 28/8/1883 | K |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC28 West Norfolk, Kilverstone | George Taylor | The British Museum | 28/6/1947 | E |
| Potamogeton berchtoldii | GB, VC28 West Norfolk, Thompson Water | George Russell Bullock-Webster | The British Museum Alfred Fryer Charles Bailey | 23/9/1897 | MANCH |
+ | Potamogeton coloratus x gramineus = P. x billupsii | GB, VC29 Cambridgeshire, Ely,Benwick | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 6/10/1892 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 13/8/1892 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 22/8/1897 | MANCH |
+ | Potamogeton natans x lucens = P. x fluitans | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 19/7/1887 | MANCH |
+ | Potamogeton natans x lucens = P. x fluitans | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 13/7/1890 | MANCH |
+ | Potamogeton natans x lucens = P. x fluitans | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 13/7/1890 | MANCH |
+ | Potamogeton natans x lucens = P. x fluitans | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 11/8/1891 | MANCH |
+ | Potamogeton natans x lucens = P. x fluitans | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 4/8/1897 | MANCH |
+ | Potamogeton natans x lucens = P. x fluitans | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | The British Museum Alfred Fryer | 19/7/1887 | MANCH |
| Potamogeton trichoides | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 29/8/1897 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Welches Dam | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 3/8/1890 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Whittlesea,Blackbush Drain | | The British Museum Alfred Fryer Charles Bailey | | MANCH |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Pidley Fen | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 11/10/1891 | MANCH |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Pidley Fen, Long Drove | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 21/6/1892 | MANCH |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Ramsey | George Taylor | The British Museum | 29/6/1946 | E |
| Potamogeton natans | GB, VC31 Huntingdonshire, Ramsey | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 19/8/1897 | MANCH |
| Potamogeton natans x gramineus = P. x sparganiifolius | GB, VC31 Huntingdonshire, Ramsey | George Taylor | The British Museum | 29/6/1946 | MANCH |
| Potamogeton lucens | GB, VC31 Huntingdonshire, Ramsey Saint Mary's | George Taylor | The British Museum | 30/6/1946 | SLBI |
+ | Potamogeton natans x lucens = P. x fluitans | GB, VC31 Huntingdonshire, Warboys | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 30/7/1897 | MANCH |
+ | Potamogeton natans x lucens = P. x fluitans | GB, VC31 Huntingdonshire, Warboys | Alfred Fryer | The British Museum Alfred Fryer Charles Bailey | 30/7/1897 | MANCH |
| Potamogeton gramineus | GB, VC31 Huntingdonshire, Wood Walton | George Taylor | The British Museum | 31/8/1946 | E |
+ | Potamogeton nodosus | GB, VC34 West Gloucestershire, Bitton,River Avon below Flock Mill | George Taylor | British Museum (Natural History) The British Museum | 27/9/1949 | MANCH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC36 Herefordshire, Red Rail | George Taylor | The British Museum | 28/7/1948 | MANCH |
| Potamogeton lucens | GB, VC38 Warwickshire, Marston Jabbett | George Taylor | The British Museum | 17/9/1948 | E |
| Potamogeton coloratus x berchtoldii = P. x lanceolatus | GB, VC52 Anglesey, Bodafon | Hugh Davies | The British Museum | | E |
| Potamogeton lucens | GB, VC54 North Lincolnshire, Althorpe | J Brown | The British Museum | 9/1947 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC54 North Lincolnshire, Belton | George Taylor | The British Museum | 2/8/1941 | MANCH |
+ | Potamogeton praelongus x perfoliatus = P. x cognatus | GB, VC54 North Lincolnshire, Belton | John Martin Taylor | British Museum (Natural History) The British Museum | 22/12/1943 | MANCH |
+ | Potamogeton praelongus x perfoliatus = P. x cognatus | GB, VC54 North Lincolnshire, Belton | John Martin Taylor | The British Museum | 3/7/1944 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC56 Nottinghamshire, Misson | J Brown | The British Museum | 7/5/1949 | MANCH |
+ | Potamogeton praelongus | GB, VC58 Cheshire, Quoisley | George Taylor | British Museum (Natural History) The British Museum | 5/9/1947 | MANCH |
| Potamogeton obtusifolius | GB, VC59 South Lancashire, Droylsden | George Taylor | The British Museum | 26/8/1945 | MANCH |
| Potamogeton friesii x crispus = P. x lintonii | GB, VC59 South Lancashire, Gorton | George Taylor | The British Museum | 10/5/1943 | SLBI |
| Potamogeton obtusifolius | GB, VC59 South Lancashire, Gorton | George Taylor | The British Museum | 10/5/1943 | MANCH |
| Potamogeton friesii x crispus = P. x lintonii | GB, VC59 South Lancashire, Stockport | George Taylor | The British Museum | 11/7/1940 | MANCH |