| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Headley | J Fraser | J Fraser | 16/9/1917 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Headley | Albert Bruce Jackson | Albert Bruce Jackson | 16/9/1917 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Mitcham | | Watson Botanical Exchange Club Albert Bruce Jackson Henry Tuke Mennell | | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Mitcham Common | Job Edward Lousley | Job Edward Lousley | 13/6/1945 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Mitcham Common | Job Edward Lousley | Job Edward Lousley | 13/6/1945 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Mitcham Common | Job Edward Lousley | Job Edward Lousley | 13/6/1945 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Richmond Park | Richmond Park Committee | | 28/9/1929 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Richmond Park | Edgar Wolston Bertram Handsley Milne-Redhead Victor Samuel Summerhayes | | 26/1/1930 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Richmond Park | Albert Bruce Jackson Noel Yvri Sandwith | Albert Bruce Jackson | 8/6/1940 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Richmond Park | Herbert Kenneth Airy Shaw Noel Yvri Sandwith Victor Samuel Summerhayes | | 17/7/1930 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Richmond Park | William Bertram Turrill | | 12/10/1930 | K |
| Callitriche intermedia subsp. hamulata | GB, VC17 Surrey, Richmond Park | William Bertram Turrill | | 12/10/1930 | K |
| Callitriche intermedia subsp. hamulata | GB, VC21 Middlesex, River Colne | J Fraser | | 24/5/1884 | K |
| Callitriche intermedia subsp. hamulata | GB, VC23 Oxfordshire, Hook Norton | Harry Joseph Riddelsdell | | 23/6/1931 | K |
| Callitriche intermedia subsp. hamulata | GB, VC39 Staffordshire, Warslow | William Henry Purchas | Botanical Exchange Club of The British Isles Briggs | 18/9/1879 | K |
| Callitriche intermedia subsp. hamulata | GB, VC39 Staffordshire, Warslow | William Henry Purchas | Botanical Exchange Club of The British Isles William Booth Waterfall | 18/9/1879 | K |
| Callitriche intermedia subsp. hamulata | GB, VC40 Shropshire, Church Stretton | Spencer Henry Bickham | | 18/7/1909 | K |
| Callitriche intermedia subsp. hamulata | GB, VC40 Shropshire, Church Stretton | Spencer Henry Bickham | Spencer Henry Bickham | 18/7/1909 | K |
| Callitriche intermedia subsp. hamulata | GB, VC40 Shropshire, Church Stretton | Spencer Henry Bickham | Spencer Henry Bickham | 18/7/1909 | K |
| Callitriche intermedia subsp. hamulata | GB, VC53 South Lincolnshire, Corby | John Harris Chandler | | 12/8/1958 | K |
| Callitriche intermedia subsp. hamulata | GB, VC55 Leicestershire, Croxton Kerrial | Arthur Reginald Horwood | | 18/7/1916 | K |
| Callitriche intermedia subsp. hamulata | GB, VC57 Derbyshire, Birleyhay | J G Hodgson | | 25/7/1976 | K |
| Callitriche intermedia subsp. hamulata | GB, VC57 Derbyshire, Bonsall | J G Hodgson | | 15/7/1976 | K |
| Callitriche intermedia subsp. hamulata | GB, VC57 Derbyshire, Brampton | Charles B Waite J G Hodgson S Bond | | 9/8/1974 | K |
| Callitriche intermedia subsp. hamulata | GB, VC57 Derbyshire, Chatsworth | J G Hodgson S Bond | | 7/8/1974 | K |
| Callitriche intermedia subsp. hamulata | GB, VC57 Derbyshire, Chesterfield | J G Hodgson S Bond | | 12/11/1976 | K |
| Callitriche intermedia subsp. hamulata | GB, VC58 Cheshire, Middlewood | Arthur Disbrowe Cotton | Arthur Disbrowe Cotton | 12/3/1904 | K |
| Callitriche obtusangula | GB, VC1 West Cornwall, Padstow | Laurence Athelstan Molesworth Riley | Laurence Athelstan Molesworth Riley | 17/9/1906 | K |
| Callitriche obtusangula | GB, VC1 West Cornwall, Porthcothan | Laurence Athelstan Molesworth Riley | Laurence Athelstan Molesworth Riley | 11/9/1906 | K |
| Callitriche obtusangula | GB, VC1 West Cornwall, Scilly Isles,Saint Marys | Frederick Janson Hanbury Thomas Richard Archer Briggs | William Booth Waterfall | 1/7/1877 | K |
| Callitriche obtusangula | GB, VC3 South Devon, Newton Poppleford | E Robinson | | 2/8/1957 | K |
| Callitriche obtusangula | GB, VC3 South Devon, Newton Poppleford | E Robinson | | 2/8/1957 | K |
| Callitriche obtusangula | GB, VC3 South Devon, Plympton Saint Mary | Thomas Richard Archer Briggs | | 19/9/1888 | K |
| Callitriche obtusangula | GB, VC4 North Devon, Appledore | John Patrick Micklethwait Brenan | | 21/5/1936 | K |
| Callitriche obtusangula | GB, VC5 South Somerset, Curry Moor | John Keyloch | | 15/7/1974 | K |
| Callitriche obtusangula | GB, VC6 North Somerset, Bruton | Frederick Kirkwood Makins | | 28/8/1937 | K |
| Callitriche obtusangula | GB, VC6 North Somerset, Glastonbury | Victor Samuel Summerhayes | | 27/5/1956 | K |
| Callitriche obtusangula | GB, VC6 North Somerset, Kenn | James Walter White | Botanical Exchange Club of The British Isles Lester Vallis Lester-Garland | 15/6/1901 | K |
| Callitriche obtusangula | GB, VC6 North Somerset, Kenn Moor | James Walter White | Botanical Exchange Club of The British Isles | 15/6/1901 | K |
| Callitriche obtusangula | GB, VC6 North Somerset, Weston in Gordano | Cecil Ivry Sandwith Noel Yvri Sandwith | | 3/6/1956 | K |