| Carex remota | GB, VC6 North Somerset, Bath | Charles Cardale Babington | John Ewbank Leefe | 18/6/1834 | E |
| 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 | GB, VC17 Surrey, Croydon Cultivated | John Ewbank Leefe | Charles Bailey Arthur Bennett | | MANCH |
| Carex depauperata | GB, VC17 Surrey, Frith Hill, Godalming | Arthur Bennett | John Ewbank Leefe Royal Botanic Gardens, Kew | 6/1874 | E |
| Salix purpurea | GB, VC17 Surrey, Kew | | John Ewbank Leefe William Hadden Beeby | 25/8/1876 | SLBI |
| Carex acutiformis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | John Ewbank Leefe | 15/5/1879 | 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 |
| Consolida regalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Richmond Museum Charles Bailey James Ward | 6/1840 | MANCH |
| Consolida regalis | GB, VC19 North Essex, Audley End | | John Ewbank Leefe | 1840 | MANCH |
| Salix aurita | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 3/4/1842 19/7/1842 | BIRM |
| Salix cinerea subsp. oleifolia | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 28/3/1842 23/7/1842 | BIRM |
| Salix cinerea subsp. oleifolia | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 4/4/1842 to 14/7/1842 | BIRM |
| Salix cinerea subsp. oleifolia | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 5/4/1842 12/8/1842 | BIRM |
| Salix cinerea subsp. oleifolia | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 6/4/1842 22/7/1842 | BIRM |
| Salix fragilis x alba = S. x rubens | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Charles Cardale Babington | 5/4/1839 to 5/6/1840 | CGE |
| Salix purpurea | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 25/3/1842 19/7/1842 | BIRM |
| Salix purpurea x viminalis = S. x rubra | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 6/4/1842 17/7/1842 | BIRM |
| Salix triandra | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 25/4/1842 | BIRM |
| Salix triandra | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 26/4/1842 25/7/1842 | BIRM |
| Salix triandra | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 4/5/1842 12/8/1842 | BIRM |
| Salix triandra | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 9/5/1842 12/8/1842 | BIRM |
| Salix triandra | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 9/5/1842 | BIRM |
| Salix triandra | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 12/8/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 19/3/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 22/3/1842 4/4/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End Cultivated | John Ewbank Leefe | Donor Unknown | 4/4/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 4/4/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 5/4/1842 to 30/7/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 5/4/1842 10/7/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 12/7/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 12/7/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 16/7/1842 | BIRM |
| Salix viminalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 12/8/1842 | BIRM |
| Salix viminalis x caprea = S. x smithiana | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Charles Cardale Babington | 19/3/1842 to 19/7/1842 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 19/3/1842 | BIRM |
| Salix viminalis x caprea = S. x smithiana | GB, VC19 North Essex, Audley End | John Ewbank Leefe | John Stevens Henslow | 19/3/1842 19/7/1842 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 15/4/1842 | BIRM |
| Salix viminalis x caprea = S. x smithiana | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Donor Unknown | 24/4/1842 16/8/1842 | BIRM |
| Salix viminalis x caprea = S. x smithiana | GB, VC19 North Essex, Audley End | John Ewbank Leefe | John Stevens Henslow | 7/5/1842 | CGE |