| Mentha arvensis | GB, VC17 Surrey, Reigate | Albert John Crosfield | | 9/8/1886 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Porkellis | Frederick Hamilton Davey | Watson Botanical Exchange Club Albert John Crosfield | 9/9/1907 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Earlswood Common | Albert John Crosfield | William Hadden Beeby | 1885 | SLBI |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC17 Surrey, Nutfield | Albert John Crosfield | | 11/9/1884 | K |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Bourn | Albert John Crosfield | Albert John Crosfield Arthur Bennett Charles Edgar Salmon Edward Shearburn Marshall | 30/9/1916 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC29 Cambridgeshire, Bourn | Albert John Crosfield | Watson Botanical Exchange Club Arthur Bennett Charles Edgar Salmon | 30/9/1916 | CGE |
| Mentha longifolia | GB, VC29 Cambridgeshire, Linton | Albert John Crosfield | Watson Botanical Exchange Club | 18/9/1923 | SLBI |
| Mentha longifolia | GB, VC29 Cambridgeshire, Linton | Albert John Crosfield | Watson Botanical Exchange Club Harold Stuart Thompson Albert John Crosfield | 18/9/1923 | BIRM |
| Mentha longifolia | GB, VC29 Cambridgeshire, Linton | Harold Stuart Thompson | Albert John Crosfield Isaac A Helsby | 18/9/1923 | SLBI |
| Mentha piperita var. piperita | GB, VC17 Surrey, Wotton | Albert John Crosfield | | 13/9/1890 | K |
| Mentha pulegium | GB, VC17 Surrey, Earlswood Common | Albert John Crosfield | William Hadden Beeby | 13/9/1884 | SLBI |
| Mentha pulegium | GB, VC17 Surrey, Earlswood Common | Albert John Crosfield | | 30/8/1873 | K |
| Mentha rubra | GB, VC29 Cambridgeshire, Bourn | Albert John Crosfield | Watson Botanical Exchange Club | 30/9/1916 | BIRM |
| Mentha spicata x longifolia = M. x villosonervata | GB, VC29 Cambridgeshire, Linton | Albert John Crosfield | | 18/9/1923 | CGE |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC29 Cambridgeshire, Linton | Albert John Crosfield | | 12/7/1917 | CGE |
| Mentha x verticillata var. rivalis | GB, VC17 Surrey, Brockham | Albert John Crosfield | Albert John Crosfield | 9/8/1886 | K |
| Mespilus germanica | GB, VC17 Surrey, Redhill | Albert John Crosfield | William Hadden Beeby | 6/6/1885 | SLBI |
| Monotropa hypopitys | GB, VC17 Surrey, Reigate Hill | Albert John Crosfield | | 31/7/1886 | K |
| Myosurus minimus | GB, VC17 Surrey, Redhill | Albert John Crosfield | William Hadden Beeby | 24/4/1885 | SLBI |
| Persicaria lapathifolia | GB, VC17 Surrey, Earlswood Common | Albert John Crosfield | William Hadden Beeby Arthur Bennett | 15/8/1884 | SLBI |
| Phleum phleoides | GB, VC29 Cambridgeshire, Hildersham | Albert John Crosfield | Harold Stuart Thompson | 5/6/1924 | BIRM |
| Plantago lanceolata | GB, VC17 Surrey, Reigate | Albert John Crosfield | | 4/5/1889 | K |
| Platanus orientalis | GB, VC29 Cambridgeshire, Cambridge | Albert John Crosfield | Joseph Edward Little | 15/9/1923 | SLBI |
| Polygala amarella | GB, VC65 North-west Yorkshire, Cronkley Fell | Albert John Crosfield James Backhouse | William Hadden Beeby Arthur Bennett | 1/6/1880 | SLBI |
| Polygala calcarea | GB, VC17 Surrey, Reigate, Buckland Hill | Albert John Crosfield | Watson Botanical Exchange Club Harold Stuart Thompson | 5/1898 | BIRM |
| Polygala vulgaris subsp. collina | GB, VC28 West Norfolk, Wells-on-Sea | Albert John Crosfield | Albert John Crosfield | 13/7/1920 | BIRM |
| Potamogeton polygonifolius | GB, VC65 North-west Yorkshire, Wensleydale | Albert John Crosfield | Croydon Natural History and Scientific Society Charles Edgar Salmon Henry Franklin Parsons | 21/7/1885 | SLBI |
+ | Primula elatior | GB, VC29 Cambridgeshire, Hardwick Wood | Albert John Crosfield | Bailey Frederick Ernest Weiss Albert John Crosfield | 8/5/1919 | MANCH |
| Primula elatior x veris = P. x media | GB, VC29 Cambridgeshire, Hardwick Wood | Albert John Crosfield | Watson Botanical Exchange Club Albert John Crosfield | 23/4/1918 | SLBI |
| Primula vulgaris x elatior = P. x digenea | GB, VC29 Cambridgeshire, Hardwick Wood | Albert John Crosfield | Watson Botanical Exchange Club Harold Stuart Thompson | 8/5/1919 | BIRM |
| Prunella vulgaris x laciniata = P. x intermedia | GB, VC29 Cambridgeshire, Cambridge | Albert John Crosfield | Watson Botanical Exchange Club Charles Bailey Albert John Crosfield | 26/6/1916 | MANCH |
| Prunella vulgaris x laciniata = P. x intermedia | GB, VC29 Cambridgeshire, Cambridge | Albert John Crosfield | Watson Botanical Exchange Club William Robert Sherrin | 12/7/1913 | SLBI |
| Prunella vulgaris x laciniata = P. x intermedia | GB, VC29 Cambridgeshire, Cambridge | Albert John Crosfield | Watson Botanical Exchange Club Harold Stuart Thompson Albert John Crosfield | 26/6/1914 | BIRM |
| Prunella vulgaris x laciniata = P. x intermedia | GB, VC29 Cambridgeshire, Hardwick | Albert John Crosfield George Goode | Watson Botanical Exchange Club | 3/7/1913 | SLBI |
+ | Prunella vulgaris x laciniata = P. x intermedia | GB, VC29 Cambridgeshire, Hardwick | Albert John Crosfield George Goode | Charles Bailey | 3/7/1913 | MANCH |
| Pulmonaria longifolia | GB, VC11 South Hampshire, Hinton Admiral | Albert John Crosfield | Albert John Crosfield | 10/3/1926 | BIRM |
| Pyrola minor | GB, VC66 County Durham, Wolsingham | Albert John Crosfield | | 7/1897 | SHYB |
| Quercus petraea | GB, VC37 Worcestershire, Malvern Wells | Albert John Crosfield | Watson Botanical Exchange Club Albert John Crosfield William Robert Sherrin | 23/8/1910 | SLBI |
| Ranunculus aquatilis | GB, VC17 Surrey, Mitcham Common | David Guthrie Catcheside | Watson Botanical Exchange Club Albert John Crosfield David Guthrie Catcheside | 10/5/1924 | BIRM |
| Sagina apetala | GB, VC36 Herefordshire, Colwall | Albert John Crosfield | Harold Stuart Thompson Albert John Crosfield | 7/1896 | BIRM |