| Salix pentandra x fragilis = S. x meyeriana | GB, VC29 Cambridgeshire, Cambridge Botanic Gardens Cultivated | John Ewbank Leefe | | 11/5/1867 28/9/1867 29/4/1868 | MANCH |
+ | Salix purpurea x aurita = S. x dichroa | GB, VC67 South Northumberland, Rothbury | John Ewbank Leefe | Charles Bailey | | MANCH |
+ | Salix purpurea x cinerea = S. x pontederiana | GB, VC67 South Northumberland, Rothbury | Arthur Bennett John Ewbank Leefe | Charles Bailey | | MANCH |
| Salix viminalis x caprea x aurita = S. x stipularis | Cultivated | John Ewbank Leefe | Richmond Museum Charles Bailey James Ward | 1869 | MANCH |
| Salix viminalis x caprea x aurita = S. x stipularis | | John Ewbank Leefe | Charles Bailey | 21/3/1868 21/4/1868 3/9/1868 10/10/1868 | MANCH |
| Salix viminalis x caprea x aurita = S. x stipularis | | John Ewbank Leefe | Richmond Museum Charles Bailey James Ward | 21/4/1866 to 10/10/1868 | MANCH |
| Salix viminalis x caprea x aurita = S. x stipularis | | John Ewbank Leefe | Charles Bailey John Hardy | 21/4/1866 3/9/1867 21/3/1868 10/10/1868 | MANCH |
| Salix viminalis x caprea x cinerea = S. x calodendron | | John Ewbank Leefe | Charles Bailey John Ray Hardy | 21/4/1869 to 11/9/1869 | MANCH |
| Salix viminalis x caprea x cinerea = S. x calodendron | | John Ewbank Leefe | Charles Bailey | 1869 21/4/1869 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | | John Ewbank Leefe | Charles Bailey John Hardy | 16/4/1866 28/9/1867 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | | John Ewbank Leefe | Richmond Museum Charles Bailey James Ward | 16/4/1866 28/9/1867 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | GB, VC14 East Sussex, Lewes | John Ewbank Leefe | Arthur Bennett Arthur Waters Preston Charles Bailey | 5/4/1875 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | Cultivated | John Ewbank Leefe | Charles Bailey | 20/4/1866 12/5/1866 20/9/1867 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | Cultivated | John Ewbank Leefe | Charles Bailey John Hardy | 20/4/1866 to 12/5/1866 20/9/1867 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | | John Ewbank Leefe | Richmond Museum Charles Bailey James Ward | 12/5/1866 to 2/5/1867 15/8/1867 to 3/9/1867 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | | | Charles Bailey John Ewbank Leefe | 12/5/1866 to 3/9/1867 | MANCH |
| Salix viminalis x cinerea = S. x holosericea | GB, VC17 Surrey, Croydon Cultivated | John Ewbank Leefe | Charles Bailey Arthur Bennett | | MANCH |
| Salix x mollissima var. hippophaefolia | | John Ewbank Leefe | Charles Bailey | 14/5/1867 24/4/1869 21/8/1869 | MANCH |
| Salix x mollissima var. hippophaefolia | | John Ewbank Leefe | Charles Bailey | 14/5/1867 24/4/1869 21/8/1869 | MANCH |
| Salix purpurea | | | John Ewbank Leefe William Hadden Beeby Arthur Bennett William Borrer | | SLBI |
| Salix bakeri | GB, VC85 Fifeshire, Balmuto Cultivated | John Thomas Irvine Boswell-Syme | William Hadden Beeby John Ewbank Leefe | 8/1877 | SLBI |
| Salix viminalis x cinerea = S. x holosericea | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Chenevix-Trench | 9/7/1842 | MANCH |
| Callitriche intermedia | GB, VC49 Caernarvonshire, Llyn Llydaw | | John Ewbank Leefe | 6/1887 | K |
| Callitriche stagnalis | GB, VC66 County Durham, Widdybank Fell, Teesdale | | John Ewbank Leefe | 8/1872 | K |
| Campanula patula | GB, VC38 Warwickshire, Allesley | | John Ewbank Leefe | 6/1887 | K |
| Carex acutiformis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | John Ewbank Leefe | 15/5/1879 | E |
| Carex arenaria | GB, VC29 Cambridgeshire, Cambridge | | John Ewbank Leefe | 5/1833 | E |
| Carex capillaris | GB, VC66 County Durham, Teesdale, Widdybank Fell | John Ewbank Leefe | | 1836 | E |
| Carex capillaris | GB, VC66 County Durham, Teesdale,Widdybank | John Ewbank Leefe | | 1836 | E |
| Carex depauperata | GB, VC17 Surrey, Frith Hill, Godalming | Arthur Bennett | John Ewbank Leefe Royal Botanic Gardens, Kew | 6/1874 | E |
| Carex diandra | GB, VC65 North-west Yorkshire, Halnaby | | John Ewbank Leefe | 6/1866 | E |
| Carex dioica | GB, VC66 County Durham, Widdybank Fell, Teesdale | John Ewbank Leefe | | 1836 | E |
| Carex dioica | GB, VC29 Cambridgeshire, Gamlingay | John Ewbank Leefe | | | E |
| Carex hirta | GB, VC65 North-west Yorkshire, Kirkby Fleetham | John Ewbank Leefe | Royal Botanic Gardens, Kew | | E |
| Carex otrubae | GB, VC50 Denbighshire, Chirk | John Ewbank Leefe | John Ewbank Leefe | | E |
| Carex panicea | | John Ewbank Leefe | | 1836 | E |
| Carex paniculata | GB, VC19 North Essex, Audley End | John Ewbank Leefe | | 15/5/1839 | E |
| Carex riparia | GB, VC19 North Essex, Audley End | John Ewbank Leefe | | 15/5/1839 | E |
| Carex rostrata | GB, VC65 North-west Yorkshire, Kirkby Fleetham | | John Ewbank Leefe Royal Botanic Gardens, Kew | | E |
| Consolida regalis | GB, VC19 North Essex, Audley End | | John Ewbank Leefe | 1840 | MANCH |