| Lathyrus aphaca | GB, VC19 North Essex, Debden | John Ewbank Leefe | Botanical Society of Edinburgh John Ewbank Leefe | 6/1840 | BON |
| Mentha suaveolens | GB, VC35 Monmouthshire | | Botanical Society of Edinburgh John Ewbank Leefe | 3/10/1837 | K |
| Lamium confertum | GB, VC72 Dumfriesshire, Brownhall | | Botanical Society of Edinburgh John Ewbank Leefe James Cruickshank | 9/1839 | K |
| Lamium confertum | GB, VC83 Midlothian, Edinburgh | | Botanical Society of Edinburgh John Ewbank Leefe Nicholas Tyacke | 1836 | K |
| Carex remota | GB, VC6 North Somerset, Bath | Charles Cardale Babington | John Ewbank Leefe | 18/6/1834 | E |
| 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 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 |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC34 West Gloucestershire, Durdham Down | Charles Cardale Babington | John Ewbank Leefe | 26/8/1836 | K |
| Salix fragilis x alba = S. x rubens | GB, VC65 North-west Yorkshire, Easby | James Ward | Charles Cardale Babington John Ewbank Leefe | 4/5/1842 16/7/1842 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC65 North-west Yorkshire, Richmond | James Ward | Charles Cardale Babington John Ewbank Leefe | 25/3/1842 21/6/1842 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC65 North-west Yorkshire, Richmond | James Ward | Charles Cardale Babington John Ewbank Leefe | 7/4/1842 27/6/1842 9/7/1842 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC65 North-west Yorkshire, Richmond | James Ward | Charles Cardale Babington John Ewbank Leefe | 9/4/1842 23/7/1842 | CGE |
| Salix viminalis x caprea = S. x smithiana | GB, VC65 North-west Yorkshire, Richmond | James Ward | Charles Cardale Babington John Ewbank Leefe | 11/5/1842 6/8/1842 | CGE |
| 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 |
| Consolida regalis | GB, VC19 North Essex, Audley End | John Ewbank Leefe | Richmond Museum Charles Bailey James Ward | 6/1840 | MANCH |
+ | Pulsatilla vulgaris | GB, VC29 Cambridgeshire, Cambridge | John Ewbank Leefe | Charles Bailey James Ward | 4/1840 | MANCH |
| Salix cinerea x myrsinifolia = S. x strepida | GB, VC29 Cambridgeshire, Cambridge Botanic Gardens Cultivated | John Ewbank Leefe | Richmond Museum Charles Bailey James Ward | 5/5/1866 14/9/1866 | MANCH |
| Salix aurita x myrsinifolia = S. x coriacea | GB, VC29 Cambridgeshire, Cambridge Botanic Gardens Cultivated | John Ewbank Leefe | Charles Bailey | 20/4/1867 14/4/1868 7/8/1868 | MANCH |
| Salix aurita x myrsinifolia = S. x coriacea | GB, VC29 Cambridgeshire, Cambridge Botanic Gardens Cultivated | John Ewbank Leefe | Charles Bailey | 20/4/1867 14/4/1868 7/8/1868 | MANCH |
| Salix aurita x myrsinifolia = S. x coriacea | GB, VC29 Cambridgeshire, Cambridge Botanic Gardens Cultivated | John Ewbank Leefe | Charles Bailey | 20/4/1867 14/4/1868 7/8/1868 | MANCH |
| Salix aurita x myrsinifolia = S. x coriacea | GB, VC29 Cambridgeshire, Cambridge Botanic Gardens Cultivated | John Ewbank Leefe | Richmond Museum Charles Bailey James Ward | 20/4/1867 14/4/1868 7/8/1868 | MANCH |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC29 Cambridgeshire, Cambridge Botanic Gardens Cultivated | John Ewbank Leefe | Charles Bailey John Hardy | 11/5/1867 28/9/1867 29/4/1868 | MANCH |
| 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 caprea x myrsinifolia = S. x latifolia | GB, VC30 Bedfordshire, Woburn Cultivated | John Ewbank Leefe | Charles Bailey | 26/4/1867 25/4/1868 27/4/1869 21/8/1869 | MANCH |
| Salix aurita x myrsinifolia = S. x coriacea | GB, VC30 Bedfordshire, Woburn | Leicester Darwall | Charles Bailey John Hardy John Ewbank Leefe | 24/3/1868 to 4/4/1868 13/8/1868 | MANCH |
| Salix aurita x myrsinifolia = S. x coriacea | GB, VC30 Bedfordshire, Woburn Cultivated | John Ewbank Leefe | Charles Bailey Leicester Darwall | 24/3/1868 4/4/1868 13/8/1868 | MANCH |
| Salix aurita x myrsinifolia = S. x coriacea | GB, VC30 Bedfordshire, Woburn | Leicester Darwall | Charles Bailey John Ewbank Leefe James Ward | 24/3/1868 to 4/4/1868 13/8/1868 | MANCH |
| Salix fragilis x alba = S. x rubens | GB, VC30 Bedfordshire, Woburn | John Ewbank Leefe | Charles Bailey | 25/4/1868 8/5/1869 26/8/1869 | MANCH |
| Salix caprea x myrsinifolia = S. x latifolia | GB, VC30 Bedfordshire, Woburn Cultivated | John Ewbank Leefe Leicester Darwall | Charles Bailey John Hardy | 19/5/1869 21/8/1869 | MANCH |
| Salix caprea x myrsinifolia = S. x latifolia | GB, VC30 Bedfordshire, Woburn | Leicester Darwall | Charles Bailey John Ewbank Leefe | 19/5/1869 21/8/1869 | 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 |
+ | Cerastium alpinum | GB, VC69,VC70, Helvellyn, Striding Edge | John Ewbank Leefe | Charles Bailey James Ward | | MANCH |
| Salix aurita x repens x herbacea = S. x grahamii | GB, VC85 Fifeshire, Balmuto Cultivated | John Ewbank Leefe John Thomas Irvine Boswell-Syme | Charles Bailey | 5/1881 | MANCH |
+ | Salix aurita x repens x herbacea = S. x grahamii | GB, VC108 West Sutherland, Foinaven | John Ewbank Leefe John Thomas Irvine Boswell-Syme | Charles Bailey | 6/1881 | MANCH |
| 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 |
| 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 |