| Cymbalaria muralis | GB, VC69 Westmorland, Arnside | Wilson Crosfield Worsdell | George Valentine Chapman Last | 9/1894 | K |
| Dactylis glomerata | GB, VC58 Cheshire, Bromborough Pool | George Valentine Chapman Last | George Valentine Chapman Last | 2/9/1894 | K |
| Dactylis glomerata | GB, VC60 West Lancashire, Carnforth | Wilson Crosfield Worsdell | George Valentine Chapman Last | 8/1894 | K |
| Dianthus deltoides | GB, VC17 Surrey, Teddington | Wilson Crosfield Worsdell | George Valentine Chapman Last | 3/8/1902 | K |
+ | Dianthus deltoides | GB, VC58 Cheshire, Hoylake | George Valentine Chapman Last | Arthur John Farmer | 30/8/1941 | MANCH |
| Dianthus deltoides | GB, VC58 Cheshire, Hoylake | George Valentine Chapman Last | | 30/7/1941 | K |
| Dianthus deltoides | GB, VC58 Cheshire, Hoylake | George Valentine Chapman Last | | 30/7/1941 | K |
| Digitalis purpurea | GB, VC3 South Devon, Lustleigh | Wilson Crosfield Worsdell | George Valentine Chapman Last | 7/1924 | K |
| Digitalis purpurea | GB, VC58 Cheshire, Bromborough | George Valentine Chapman Last | George Valentine Chapman Last | 8/6/1893 | K |
+ | Dryopteris carthusiana x dilatata = D. x deweveri | GB, VC63 South-west Yorkshire, Thorne | Hubert Frederick Dovaston | Arthur John Farmer George Valentine Chapman Last | 20/6/1940 | MANCH |
| Erinus alpinus | GB, VC51 Flintshire, Rhydymwyn | George Valentine Chapman Last | George Valentine Chapman Last | 11/6/1942 | K |
| Fallopia dumetorum | GB, VC15 East Kent, Ashford | John Frederick Jeffrey | George Valentine Chapman Last | 9/1886 | K |
| Festuca arundinacea | GB, VC17 Surrey, Richmond | Wilson Crosfield Worsdell | George Valentine Chapman Last | 7/1892 | K |
| Fraxinus excelsior | GB, VC69 Westmorland, Arnside | Wilson Crosfield Worsdell | George Valentine Chapman Last | 14/9/1893 | K |
| Fraxinus excelsior | GB, VC69 Westmorland, Arnside | Wilson Crosfield Worsdell | George Valentine Chapman Last | 24/4/1894 | K |
| Galeopsis angustifolia | GB, VC8 South Wiltshire, Heytesbury | Wilson Crosfield Worsdell | George Valentine Chapman Last | 17/8/1905 | K |
| Galeopsis angustifolia | GB, VC15 East Kent, Dungeness | Wilson Crosfield Worsdell | George Valentine Chapman Last | 12/7/1929 | K |
| Galeopsis segetum | GB, VC49 Caernarvonshire, Bangor | John Edwards Griffith | George Valentine Chapman Last | 1890 | K |
| Galeopsis tetrahit | IE, VCH38 Co. Down, Warrenpoint | George Valentine Chapman Last | George Valentine Chapman Last | 24/8/1895 | K |
| Galeopsis versicolor | GB, VC58 Cheshire, Lymm | George Valentine Chapman Last | George Valentine Chapman Last | 24/8/1939 | K |
| Galeopsis versicolor | GB, VC59 South Lancashire, Little Crosby | George Valentine Chapman Last | George Valentine Chapman Last | 14/8/1892 | K |
| Gentianella campestris | GB, VC59 South Lancashire, Freshfield | George Valentine Chapman Last | | 22/8/1940 | K |
| Glebionis segetum | GB, VC88 Mid Perthshire, Carie | Wilson Crosfield Worsdell | George Valentine Chapman Last | 21/8/1895 | K |
| Glebionis segetum | IE, VCH38 Co. Down, Warrenpoint | George Valentine Chapman Last | | 24/8/1895 | K |
| Glechoma hederacea | GB, VC6 North Somerset, Bath | George Valentine Chapman Last | George Valentine Chapman Last | 6/4/1905 | K |
| Glechoma hederacea | GB, VC69 Westmorland, Arnside | Wilson Crosfield Worsdell | George Valentine Chapman Last | 5/1921 | K |
| Groenlandia densa | GB, VC69 Westmorland, Milnthorpe | Wilson Crosfield Worsdell | George Valentine Chapman Last | 8/9/1906 | K |
| Habenaria albida | GB, VC64 Mid-west Yorkshire, Malham | Wilson Crosfield Worsdell | George Valentine Chapman Last | 6/1919 | K |
| Habenaria albida | GB, VC90 Angus, Glen Prosen | Wilson Crosfield Worsdell | George Valentine Chapman Last | 20/7/1894 | K |
| Habenaria viride | GB, VC8 South Wiltshire, Warminster | Wilson Crosfield Worsdell | George Valentine Chapman Last | 7/1914 | K |
| Habenaria viride | GB, VC8 South Wiltshire, Warminster | Wilson Crosfield Worsdell | George Valentine Chapman Last | 8/1914 | K |
| Habenaria viride | GB, VC51 Flintshire, Rhydymwyn | George Valentine Chapman Last | | 11/6/1942 | K |
| Helleborus foetidus | GB, VC50 Denbighshire, Pwll Glas | George Valentine Chapman Last | Arthur John Farmer | 11/4/1941 | MANCH |
| Helleborus foetidus | GB, VC50 Denbighshire, Ruthin | George Valentine Chapman Last | Arthur John Farmer | 11/4/1941 | MANCH |
| Herminium monorchis | GB, VC15 East Kent, Ashford | Alban Edward Lomax | George Valentine Chapman Last | 7/1883 | K |
| Herminium monorchis | GB, VC15 East Kent, Wye | Wilson Crosfield Worsdell | George Valentine Chapman Last | 8/7/1931 | K |
| Hordeum marinum | GB, VC19 North Essex, Salcott | James Arden Whellan | George Valentine Chapman Last | 2/7/1944 | K |
| Hordeum marinum | GB, VC28 West Norfolk, King's Lynn | John Brown | George Valentine Chapman Last | 5/8/1943 | K |
+ | Hypericum linariifolium | GB, VC49 Caernarvonshire | Hubert Frederick Dovaston | Arthur John Farmer George Valentine Chapman Last | 1941 | MANCH |
| Hypochaeris glabra | GB, VC4 North Devon, Ilfracombe | George Valentine Chapman Last | | 6/1924 | K |