| Callitriche autumnalis | GB, VC11 South Hampshire, Romsey | Douglas Montague Heath | Douglas Montague Heath | 4/9/1925 | BIRM |
| Callitriche hermaphroditica | GB, VC16 West Kent, Darenth | St John Marriott | Watson Botanical Exchange Club Isaac A Helsby | 7/1924 | SLBI |
| Callitriche hermaphroditica | GB, VC17 Surrey, Barnes Common | William Robert Sherrin | | 7/1898 | SLBI |
| Callitriche hermaphroditica | GB, VC17 Surrey, Wotton | William Robert Sherrin | | 7/1925 | SLBI |
| Callitriche autumnalis | GB, VC38 Warwickshire, Warwick | Robert Large Baker | George Stephen West Robert Large Baker | | BIRM |
| Callitriche autumnalis | GB, VC40 Shropshire, Sharpstones Hill | William Allport Leighton | George Lloyd | 8/1837 | K |
| Callitriche autumnalis | GB, VC49 Caernarvonshire, Llyn Idwal | John Ezra Woodhead | Watson Botanical Exchange Club Isaac A Helsby | 10/7/1934 | SLBI |
| Callitriche hermaphroditica | GB, VC49 Caernarvonshire, Llyn Padarn | | Douglas Montague Heath | 7/7/1921 | BIRM |
| Callitriche hermaphroditica | GB, VC52 Anglesey | William Wilson | | 7/1825 | K |
| Callitriche hermaphroditica | GB, VC52 Anglesey, Llanfaelog | John P Savidge | | 2/1/1956 | ABS |
| Callitriche hermaphroditica | GB, VC52 Anglesey, Valley | Reginald William Phillips | Albert Bruce Jackson | 9/1892 | K |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Halford | J L Warren | | 8/1870 | MANCH |
| Callitriche autumnalis | GB, VC58 Cheshire, Holford | J L Warren | Augustin Ley | 8/1870 | BIRM |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Holford | John Byrne Leicester Warren | London Botanical Exchange Club Charles Bailey | 8/1870 | MANCH |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Knutsford | J L Warren | Charles Bailey J L Warren | 8/1870 | MANCH |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Knutsford | J L Warren | William Hadden Beeby | 8/1870 | SLBI |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Rostherne Mere | Henry (Harry) Searle | Manchester Museum Charles Bailey | 8/1885 | MANCH |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Rostherne Mere | Henry (Harry) Searle | Charles Bailey | 11/8/1885 | 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, VC58 Cheshire, Rostherne Mere | Charles Bailey | Charles Bailey | 13/8/1892 | MANCH |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Rostherne Mere | Henry (Harry) Searle | William Hadden Beeby Arthur Bennett | 7/1885 | SLBI |
| Callitriche hermaphroditica | GB, VC58 Cheshire, Rostherne Mere | W Horton-Smith | | 23/8/1916 | MANCH |
| Callitriche autumnalis | GB, VC59 South Lancashire, Knowsley | George Valentine Chapman Last | George Valentine Chapman Last | 14/9/1939 | K |
| Callitriche autumnalis | GB, VC60 West Lancashire, Ashton on Ribble | F C King | Watson Botanical Exchange Club Harold Stuart Thompson | 8/1885 | BIRM |
| Callitriche autumnalis | GB, VC60 West Lancashire, Carnforth | Henry Tuke Mennell | Ernest Stanley Salmon | 8/1891 | SHYB |
| Callitriche hermaphroditica | GB, VC60 West Lancashire, Preston | F C King | Charles Bailey | 8/1883 | MANCH |
| Callitriche hermaphroditica | GB, VC60 West Lancashire, Thurnham | John P Savidge | | 19/9/1956 | ABS |
| Callitriche hermaphroditica | GB, Lancashire, Lytham | | Moon | 1883 | MANCH |
| Callitriche hermaphroditica | GB, Lancashire, Thurnham | John P Savidge | John P Savidge | 11/9/1956 | ABS |
| Callitriche autumnalis | GB, VC69 Westmorland, Farleton | Herbert Kenneth Airy Shaw | | 7/1936 | K |
| Callitriche hermaphroditica | GB, VC70 Cumberland, Keswick | Joseph Woods | Allan Octavian Hume Frederick Townsend | 26/7/1835 | SLBI |
| Callitriche autumnalis | GB, VC72 Dumfriesshire, Mouswald | Edgar Wolston Bertram Handsley Milne-Redhead | | 6/8/1957 | K |
| Callitriche autumnalis | GB, VC74 Wigtownshire, Stranraer | Charles Bailey | George Stephen West | 27/9/1883 | BIRM |
| 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, VC80 Roxburghshire, Yetholm Loch | Andrew Brotherston | George Stephen West | 6/1875 | BIRM |
| Callitriche autumnalis | GB, VC80 Roxburghshire, Yetholm Loch | Andrew Brotherston | William Booth Waterfall | 6/1875 | K |
| Callitriche autumnalis | GB, VC80 Roxburghshire, Yetholm Loch | Andrew Brotherston | | 7/1877 | K |
| Callitriche autumnalis | GB, VC80 Roxburghshire, Yetholm Loch | Andrew Brotherston | Botanical Exchange Club of The British Isles Augustin Ley | 9/1877 | BIRM |
| 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 |