| Salix viminalis x caprea = S. x smithiana | GB, VC21 Middlesex, Finchley GB, VC21 Middlesex, Hendon | | IRGMA | 10/1883 5/4/1884 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC26 West Suffolk, Market Weston | Edward Francis Linton | IRGMA | 11/4/1883 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC27 East Norfolk, Sprowston | | IRGMA | 22/9/1883 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC26 West Suffolk, Market Weston GB, VC27 East Norfolk, Sprowston Cultivated | Edward Francis Linton | IRGMA | 4/5/1887 29/9/1887 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC30 Bedfordshire, Turvey | | IRGMA | 24/4/1884 11/9/1884 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC31 Huntingdonshire, Sawtry | Arthur Bennett | IRGMA | 20/4/1885 3/9/1885 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC31 Huntingdonshire, Sawtry | | IRGMA | 20/4/1885 3/9/1885 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC36 Herefordshire, Ross | William Henry Purchas | IRGMA | 4/1852 31/7/1852 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC36 Herefordshire, Rudhall nr Ross-on-Wye | William Henry Purchas | IRGMA William Henry Purchas | 4/1852 30/6/1852 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC38 Warwickshire, Kenilworth Chase | Henry Bromwich | Botanical Exchange Club of The British Isles IRGMA Henry Bromwich | 4/1881 9/1881 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC38 Warwickshire, Wyken | Thomas Kirk | IRGMA | 25/4/1853 19/9/1853 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC40 Shropshire, Dawley | William Hunt Painter | Botanical Exchange Club of The British Isles IRGMA William Hunt Painter | 4/1894 7/1894 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC55 Leicestershire, King's Norton | Arthur Reginald Horwood | Botanical Exchange Club of The British Isles IRGMA Arthur Reginald Horwood | 11/7/1908 1/9/1909 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Bradley | | IRGMA | 3/5/1888 21/8/1888 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Edlaston Coppy | | IRGMA | 28/4/1890 18/8/1890 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Edlaston Coppy | | IRGMA | 8/8/1891 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Edlaston Coppy | William Richardson Linton | IRGMA | 28/4/1890 18/8/1890 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Over Burrows | | IRGMA | 28/4/1888 9/10/1888 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Shirley | | IRGMA | 23/5/1888 7/9/1888 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Shirley | | IRGMA | 1/5/1888 25/6/1888 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Shirley | William Richardson Linton | IRGMA Set of British Willows | 1894 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Shirley Common | William Richardson Linton | IRGMA | 17/4/1888 22/8/1888 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC58 Cheshire, Macclesfield | Richard Francis Towndrow Spencer Henry Bickham | Watson Botanical Exchange Club IRGMA Spencer Henry Bickham | 6/4/1905 8/8/1905 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC58 Cheshire, Wallasey | | IRGMA | 4/1864 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC59 South Lancashire, Clitheroe | | IRGMA | 30/5/1914 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC62 North-east Yorkshire, Coxwold | John Gilbert Baker | IRGMA | 7/1855 | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC62 North-east Yorkshire, Kilvington | John Gilbert Baker | IRGMA | | LIV |
| Salix viminalis x caprea = S. x smithiana | GB, VC80 Roxburghshire, Kelso | Andrew Brotherston | IRGMA | 9/4/1876 to 9/1876 | LIV |
| Salix viminalis x caprea = S. x smithiana | IE, VCH16 West Galway, Recess | | IRGMA | 13/8/1885 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC26 West Suffolk, Barton Mills | Thomas Jackson Foggitt | IRGMA Frederick William Holder | 13/7/1925 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC26 West Suffolk, Barton Mills | Thomas Jackson Foggitt | IRGMA Joseph Norman Frankland | 13/7/1928 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC40 Shropshire, Hanwood | William Allport Leighton | IRGMA | 1842 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC58 Cheshire, Wybunbury Bog | William Richardson Linton | IRGMA | 27/5/1895 26/8/1895 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC58 Cheshire, Wybunbury Bog | William Richardson Linton | IRGMA William Richardson Linton | 27/5/1895 26/8/1895 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC58 Cheshire, Wybunbury Bog | William Richardson Linton | IRGMA Set of British Willows | 27/5/1895 26/8/1895 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC59 South Lancashire, Freshfield | Vera Gordon | Liverpool University IRGMA | 21/8/1956 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC59 South Lancashire, Freshfield | Vera Gordon | Liverpool Botanical Society IRGMA | 2/7/1955 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC59 South Lancashire, Freshfield | Alice E Ratcliffe | IRGMA | 16/5/1967 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC68 North Northumberland, Rothbury | John Ewbank Leefe | IRGMA Arthur Bennett | 5/1870 to 8/1870 | LIV |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC72 Dumfriesshire, Sanquhar | | IRGMA | 6/1883 | LIV |