| Salix viminalis x caprea = S. x smithiana | GB, VC29 Cambridgeshire, Cambridge | Edmund Frederic Warburg | | 1/5/1932 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC29 Cambridgeshire, Cambridge | Edmund Frederick Warburg | | 1/5/1932 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC29 Cambridgeshire, Fulbourn | Thomas Gaskell Tutin | | 5/1932 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC17 Surrey, Godstone | J Fraser | Watson Botanical Exchange Club Harold Stuart Thompson J Fraser | 14/4/1929 7/7/1929 | BIRM |
| Salix viminalis x caprea = S. x smithiana | GB, VC6 North Somerset, Pensford | Ida Mary Roper | Botanical Exchange Club of The British Isles Ida Mary Roper J Fraser Spencer Henry Bickham | 30/3/1927 to 22/6/1927 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Ickleford | Joseph Edward Little | Botanical Exchange Club of The British Isles | 16/5/1924 | MANCH |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Hitchin | Joseph Edward Little | Botanical Exchange Club of The British Isles | 2/11/1923 16/5/1924 | MANCH |
| Salix viminalis x caprea = S. x smithiana | GB, VC19 North Essex, Berechurch | George Charles Brown | Botanical Society & Exchange Club of The British Isles Joseph Edward Little | 21/5/1923 to 14/8/1923 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Great Wymondley | Joseph Edward Little | Watson Botanical Exchange Club Joseph Edward Little | 3/4/1923 to 13/10/1923 | SLBI |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Hitchin | Joseph Edward Little | Watson Botanical Exchange Club | 5/3/1923 4/10/1923 | SLBI |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Hitchin | Joseph Edward Little | Edward Francis Linton Joseph Edward Little | 5/3/1923 4/10/1923 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Hitchin | Joseph Edward Little | Joseph Edward Little | 5/3/1923 4/10/1923 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Ickleford | Joseph Edward Little | Joseph Edward Little | 2/11/1922 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Great Wymondley | Joseph Edward Little | Watson Botanical Exchange Club Joseph Edward Little | 2/4/1922 5/10/1922 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Hitchin | Joseph Edward Little | Watson Botanical Exchange Club Joseph Edward Little | 12/3/1922 to 30/7/1922 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Great Wymondley | Joseph Edward Little | Joseph Edward Little | 25/7/1921 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Hitchin | Joseph Edward Little | Joseph Edward Little | 17/6/1921 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC34 West Gloucestershire, Westerleigh | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 20/4/1921 17/8/1921 | SLBI |
| Salix viminalis x caprea = S. x smithiana | GB, VC34 West Gloucestershire, Westerleigh | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 20/4/1921 17/8/1921 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Ickleford | Joseph Edward Little | Watson Botanical Exchange Club Joseph Edward Little | 18/4/1921 16/5/1921 | SLBI |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Ickleford | Joseph Edward Little | Watson Botanical Exchange Club Joseph Edward Little | 18/4/1921 16/5/1921 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Great Wymondley | Joseph Edward Little | Joseph Edward Little | 4/4/1921 to 25/7/1921 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC20 Hertfordshire, Great Wymondley | Joseph Edward Little | Joseph Edward Little | 25/10/1920 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC55 Leicestershire, South Croxton | Arthur Reginald Horwood | Botanical Exchange Club of The British Isles Joseph Edward Little Arthur Edward Wade | 24/4/1916 28/5/1916 | CGE |
| 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, VC6 North Somerset, Walton-in-Gordano | Ida Mary Roper | Joseph Edward Little | 9/4/1913 7/8/1913 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC17 Surrey, Merton | Charles Edward Britton | Charles Edward Britton | 8/8/1911 6/5/1912 | SLBI |
| Salix viminalis x caprea = S. x smithiana | GB, VC32 Northamptonshire, Wadenhoe | Augustin Ley | Augustin Ley | 26/7/1910 | BIRM |
| Salix viminalis x caprea = S. x smithiana | IE, VCH27 West Mayo, Westport | Matilda Cullen Knowles | National Museum Ireland Matilda Cullen Knowles | 4/7/1909 | DBN |
| 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, VC55 Leicestershire, Quenby | Arthur Reginald Horwood | Arthur Reginald Horwood Spencer Henry Bickham | 14/8/1906 4/1907 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC55 Leicestershire, Quenby | Arthur Reginald Horwood | Botanical Exchange Club of The British Isles Arthur Reginald Horwood Augustin Ley | 14/8/1906 4/1907 | BIRM |
| Salix viminalis x caprea = S. x smithiana | GB, VC37 Worcestershire, Madresfield | F Towndrow Spencer Henry Bickham | Spencer Henry Bickham | 6/4/1905 8/8/1905 | CGE |
| 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, VC37 Worcestershire, Brace's Leigh | Richard Francis Towndrow Spencer Henry Bickham | Spencer Henry Bickham | 29/8/1904 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC55 Leicestershire, King's Norton | Arthur Reginald Horwood | Botanical Exchange Club of The British Isles Arthur Reginald Horwood Charles Edward Moss | 11/7/1904 1/9/1909 | CGE |
| Salix viminalis x caprea = S. x smithiana | IE, VCH8 Co. Limerick, West Loghill | Matilda Cullen Knowles | Science & Art Museum Dublin | 6/1904 | DBN |
| Salix viminalis x caprea = S. x smithiana | GB, VC57 Derbyshire, Shirley Cultivated | William Richardson Linton | Allan Octavian Hume | 12/6/1903 | SLBI |
| Salix viminalis x caprea = S. x smithiana | GB, VC1 West Cornwall, Bissoe | Frederick Hamilton Davey | Allan Octavian Hume | 21/5/1902 | SLBI |
| Salix viminalis x caprea = S. x smithiana | GB, VC1 West Cornwall, Bissoe | Frederick Hamilton Davey | Allan Octavian Hume | 21/5/1902 | SLBI |