| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Chatteris | Alfred Fryer | Alfred Fryer Charles Bailey | 12/7/1890 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Chatteris | Alfred Fryer | Alfred Fryer Charles Bailey | 26/8/1897 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Chatteris, Block Fen | Alfred Fryer | Alfred Fryer Charles Bailey | 20/7/1887 20/9/1891 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Clarke's Farm | Alfred Fryer Edward Walter Hunnybun | Alfred Fryer Charles Bailey | 30/9/1909 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Doddington | Alfred Fryer | Alfred Fryer Charles Bailey | 22/8/1886 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Doddington | Alfred Fryer | Charles Bailey | 16/7/1888 | MANCH |
+ | Potamogeton coloratus x gramineus = P. x billupsii | GB, VC29 Cambridgeshire, Ely,Benwick | Alfred Fryer | Alfred Fryer Charles Bailey | 25/8/1892 | 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 lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Charles Bailey | 1/7/1883 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Alfred Fryer Charles Bailey | 20/8/1883 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Charles Bailey | 10/7/1887 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Alfred Fryer Charles Bailey | 31/5/1888 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Alfred Fryer Charles Bailey | 7/6/1888 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Charles Bailey | 4/8/1888 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Charles Bailey | 6/8/1888 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Charles Bailey Eyre Champion de Crespigny | 25/8/1888 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Charles Bailey | 18/7/1890 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Charles Bailey | 18/7/1890 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Alfred Fryer Charles Bailey | 20/8/1892 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC29 Cambridgeshire, Fortrey | Alfred Fryer | Alfred Fryer Charles Bailey | 22/8/1897 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Alfred Fryer Charles Bailey | | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 10/1885 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 9/10/1885 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 26/7/1886 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 28/7/1886 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 18/8/1886 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 28/8/1886 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 11/9/1886 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 11/9/1886 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 26/7/1887 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 2/8/1887 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Alfred Fryer Charles Bailey | 2/8/1887 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 2/8/1887 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 9/8/1887 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 19/8/1887 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 21/4/1888 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 29/5/1888 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Alfred Fryer Charles Bailey | 30/6/1888 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 30/6/1888 | MANCH |
| Potamogeton gramineus | GB, VC29 Cambridgeshire, Mepal | Alfred Fryer | Charles Bailey | 13/7/1888 | MANCH |