| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC29 Cambridgeshire, Coe Fen | Humphrey Gilbert-Carter | | 3/8/1943 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC29 Cambridgeshire, Coldham | Joseph Edward Little | | 8/1878 | CGE |
| Salix fragilis x triandra = S. x alopecuroides | GB, VC29 Cambridgeshire, Cottenham | Francis Buchanan White | | 8/1893 | CGE |
| Salix caprea x cinerea = S. x reichardtii | GB, VC29 Cambridgeshire, Coveney | A C Leslie | | 29/8/2005 | CGE |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC29 Cambridgeshire, Doddington | Clifford Charles Townsend | Clifford Charles Townsend | 17/8/1955 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC29 Cambridgeshire, Dry Drayton | Charles Cardale Babington | Charles Cardale Babington J Fraser | 15/8/1853 | CGE |
| Salix fragilis x alba = S. x rubens | GB, VC29 Cambridgeshire, Elsworth | J Gina Murrell Peter Derek Sell | | 28/8/1991 | CGE |
| Salix caprea x cinerea = S. x reichardtii | GB, VC29 Cambridgeshire, Ely | A C Leslie | | 19/8/2005 | CGE |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC29 Cambridgeshire, Ely | William Marshall | Charles Cardale Babington | 1864 | CGE |
| Salix fragilis x triandra = S. x alopecuroides | GB, VC29 Cambridgeshire, Fen Ditton | Charles Edward Moss | | 21/7/1912 | CGE |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC29 Cambridgeshire, Fordham | Stuart Max Walters | | 16/9/1949 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC29 Cambridgeshire, Fulbourn | Thomas Gaskell Tutin | | 5/1932 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Gamlingay | Frederick Robert Tennant | | | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Gamlingay | Frederick Robert Tennant | | 7/1900 | CGE |
| Salix caprea x cinerea = S. x reichardtii | GB, VC29 Cambridgeshire, Gamlingay | | | 3/5/1911 | CGE |
| Salix caprea x cinerea = S. x reichardtii | GB, VC29 Cambridgeshire, Gamlingay | Edward Shearburn Marshall | Spencer Henry Bickham | 3/5/1911 | CGE |
| Salix caprea x cinerea = S. x reichardtii | GB, VC29 Cambridgeshire, Harston | A C Leslie | | 24/5/2003 | CGE |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC29 Cambridgeshire, Hinxton | | J Fraser | 28/8/1912 | CGE |
| Salix alba x babylonica = S. x sepulcralis var. chrysocoma | GB, VC29 Cambridgeshire, Histon | A C Leslie | | 26/10/2003 | CGE |
| Salix alba x babylonica = S. x sepulcralis var. chrysocoma | GB, VC29 Cambridgeshire, Histon | A C Leslie | | 26/10/2003 | CGE |
| Salix fragilis x alba = S. x rubens | GB, VC29 Cambridgeshire, Kneesworth | Peter Derek Sell | | 9/9/1986 | CGE |
| Salix fragilis x alba = S. x rubens | GB, VC29 Cambridgeshire, Kneesworth | Peter Derek Sell | | 9/9/1986 | CGE |
| Salix caprea x cinerea = S. x reichardtii | GB, VC29 Cambridgeshire, Langley Wood | Edmund Frederic Warburg | Botanical Society & Exchange Club of The British Isles | 9/6/1932 | CGE |
| Mentha spicata x longifolia = M. x villosonervata | GB, VC29 Cambridgeshire, Linton | Albert John Crosfield | | 18/9/1923 | CGE |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC29 Cambridgeshire, Linton | Albert John Crosfield | | 12/7/1917 | CGE |
| Salix fragilis x alba = S. x rubens | GB, VC29 Cambridgeshire, Little Gransden | J Gina Murrell Peter Derek Sell | | 3/5/1991 | CGE |
| Mentha spicata x suaveolens = M. x villosa | GB, VC29 Cambridgeshire, Littleport | Joseph Edward Little | | 1/9/1878 | CGE |
| Salix fragilis x triandra = S. x alopecuroides | GB, VC29 Cambridgeshire, Lords' Bridge | Charles Edward Moss | | 15/12/1912 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC29 Cambridgeshire, Madingley | John Stevens Henslow | John Stevens Henslow | 31/7/1828 | CGE |
| Salix caprea x cinerea = S. x reichardtii | GB, VC29 Cambridgeshire, Meldreth | Peter Derek Sell | | 15/8/1990 | CGE |
| Salix triandra x viminalis = S. x mollissima | GB, VC29 Cambridgeshire, Mepal GB, VC29 Cambridgeshire, Mepal | A C Leslie | | 8/9/1980 | CGE |
| Salix triandra x viminalis = S. x mollissima | GB, VC29 Cambridgeshire, Mepal | A C Leslie | | 8/9/1980 | CGE |
| Salix caprea x cinerea = S. x reichardtii | GB, VC29 Cambridgeshire, Newmarket, Devils Ditch | A C Leslie | | 25/6/2004 | CGE |
| Salix fragilis x alba = S. x rubens | GB, VC29 Cambridgeshire, Over | J Gina Murrell Peter Derek Sell | | 29/8/1991 | CGE |
| Salix triandra x viminalis = S. x mollissima | GB, VC29 Cambridgeshire, Over | J Gina Murrell Peter Derek Sell | | 30/1/1992 | CGE |
| Salix fragilis x alba = S. x rubens | GB, VC29 Cambridgeshire, Pymore | Peter Derek Sell | | 18/5/1972 | CGE |
| Salix fragilis x alba = S. x rubens | GB, VC29 Cambridgeshire, Rockefeller field | W J Dowson | | 5/5/1939 | CGE |
| Salix fragilis x alba = S. x rubens | GB, VC29 Cambridgeshire, Rockefeller Field, Storey's Way,
Cambridge | W J Dowson | | 5/5/1950 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC29 Cambridgeshire, Sawston | A C Leslie | | 30/5/1987 | CGE |
| Salix caprea x cinerea = S. x reichardtii | GB, VC29 Cambridgeshire, Sawston Moor | Christopher David Preston Peter Derek Sell | | 16/6/1987 | CGE |