| Callitriche autumnalis | GB, VC72 Dumfriesshire, Mouswald | Edgar Wolston Bertram Handsley Milne-Redhead | | 6/8/1957 | K |
| Callitriche hermaphroditica | GB, VC60 West Lancashire, Thurnham | John P Savidge | | 19/9/1956 | ABS |
| Callitriche hermaphroditica | GB, Lancashire, Thurnham | John P Savidge | John P Savidge | 11/9/1956 | ABS |
| Callitriche hermaphroditica | GB, VC52 Anglesey, Llanfaelog | John P Savidge | | 2/1/1956 | ABS |
| Callitriche autumnalis | GB, VC112 Shetland, Loch of Asta | Job Edward Lousley | Job Edward Lousley | 27/7/1950 | K |
| Callitriche autumnalis | GB, VC59 South Lancashire, Knowsley | George Valentine Chapman Last | George Valentine Chapman Last | 14/9/1939 | K |
| Callitriche autumnalis | GB, VC89 East Perthshire, Stormont Loch | Cecil Ivry Sandwith Noel Yvri Sandwith | | 31/7/1936 | K |
| Callitriche autumnalis | GB, VC69 Westmorland, Farleton | Herbert Kenneth Airy Shaw | | 7/1936 | K |
| Callitriche autumnalis | GB, VC49 Caernarvonshire, Llyn Idwal | John Ezra Woodhead | Watson Botanical Exchange Club Isaac A Helsby | 10/7/1934 | SLBI |
| Callitriche autumnalis | GB, VC76 Renfrewshire, Eaglesham | Robert MacKechnie | Watson Botanical Exchange Club Edward Charles Wallace Harold Stuart Thompson | 1/10/1933 | BIRM |
| Callitriche autumnalis | GB, VC111 Orkney, Kirk Ness | | | 30/9/1925 | K |
| Callitriche autumnalis | GB, VC11 South Hampshire, Romsey | Douglas Montague Heath | Douglas Montague Heath | 4/9/1925 | BIRM |
| Callitriche hermaphroditica | GB, VC17 Surrey, Wotton | William Robert Sherrin | | 7/1925 | SLBI |
| Callitriche autumnalis | GB, VC112 Shetland, Spiggie | George Claridge Druce | Botanical Society & Exchange Club of The British Isles Charles Edward Britton | 7/1924 | K |
| Callitriche hermaphroditica | GB, VC16 West Kent, Darenth | St John Marriott | Watson Botanical Exchange Club Isaac A Helsby | 7/1924 | SLBI |
| Callitriche hermaphroditica | GB, VC49 Caernarvonshire, Llyn Padarn | | Douglas Montague Heath | 7/7/1921 | BIRM |
| Callitriche autumnalis | GB, VC111 Orkney, Mainland, Loch of Ayre | Henry Halcro Johnston | | 25/8/1916 | K |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Rostherne Mere | W Horton-Smith | | 23/8/1916 | MANCH |
| Callitriche autumnalis | GB, VC111 Orkney, Stromness | | | 14/10/1913 | K |
| Callitriche hermaphroditica | GB, VC82 East Lothian, Dunbar | McTaggert Cowan | London Natural History Society Watson Botanical Exchange Club Edmund Browne Bishop McTaggert Cowan | 7/1911 | SLBI |
| Callitriche autumnalis | GB, VC85 Fifeshire, Kilconquhar Loch | George Stephen West | Arthur Bennett | 20/9/1909 | K |
| Callitriche hermaphroditica | GB, VC85 Fifeshire, Loch Fitty | George Stephen West | Allan Octavian Hume Arthur Bennett | 9/1909 | SLBI |
| Callitriche hermaphroditica | VCH39, Harbour Island | Coslett Herbert Waddell | Watson Botanical Exchange Club William Robert Sherrin | 18/8/1909 | SLBI |
| Callitriche autumnalis | IE, VCH39 Co. Antrim, Lough Neagh | Coslett Herbert Waddell | Watson Botanical Exchange Club Augustin Ley Coslett Herbert Waddell | 13/8/1909 | BIRM |
| Callitriche hermaphroditica | GB, VC85 Fifeshire, Kilconquhar Cultivated | G West | Arthur Bennett | 1909 | SLBI |
| Callitriche hermaphroditica | IE, VCH2 North Kerry, KIllarney lakes | Robert Albert Phillips | Allan Octavian Hume | 7/1899 | SLBI |
| Callitriche hermaphroditica | GB, VC17 Surrey, Barnes Common | William Robert Sherrin | | 7/1898 | SLBI |
| Callitriche autumnalis | GB, VC85 Fifeshire, Kinross | Ernest Stanley Salmon | Ernest Stanley Salmon | 9/1896 | SHYB |
| Callitriche autumnalis | GB, VC85 Fifeshire, Kinross | Ernest Stanley Salmon | Ernest Stanley Salmon | 9/1896 | K |
| Callitriche autumnalis | GB, VC85 Fifeshire, Kinross | Ernest Stanley Salmon | Ernest Stanley Salmon | 9/1896 | K |
| Callitriche autumnalis | GB, VC85 Fifeshire, Kinross | Ernest Stanley Salmon | Ernest Stanley Salmon | 9/1896 | K |
| Callitriche hermaphroditica | IE, VCH38 Co. Down, Aughnadarragh | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 8/1896 | SLBI |
| Callitriche hermaphroditica | IE, VCH39 Co. Antrim, Toome | Robert Lloyd Praeger | Robert Lloyd Praeger | 6/1893 | DBC |
| Callitriche hermaphroditica | GB, VC52 Anglesey, Valley | Reginald William Phillips | Albert Bruce Jackson | 9/1892 | K |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Rostherne Mere | Charles Bailey | Charles Bailey | 13/8/1892 | MANCH |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Rostherne Mere | Charles Bailey | Charles Bailey | 13/8/1892 | MANCH |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Rostherne Mere | Charles Bailey | Charles Bailey | 13/8/1892 | MANCH |
+ | Callitriche hermaphroditica | GB, VC89 East Perthshire, Marlee Loch | Edward Shearburn Marshall | | 19/7/1892 | PTH |
| Callitriche hermaphroditica | GB, VC86 Stirlingshire, Falkirk | James Groves John Stirling Stirling Robert Kidston | | 24/8/1891 | SLBI |
| Callitriche autumnalis | GB, VC60 West Lancashire, Carnforth | Henry Tuke Mennell | Ernest Stanley Salmon | 8/1891 | SHYB |