+ | Carex viridula s.l. | GB, VC29 Cambridgeshire, Bottisham Fen | Charles Cardale Babington | | 6/7/1849 | BIRM |
+ | Carex viridula s.l. | GB, VC45 Pembrokeshire, Penally | Charles Cardale Babington | | 25/8/1851 | BIRM |
| Catapodium marinum | GB, VC25,VC27, Yarmouth | Charles Cardale Babington | George Stephen West William West | 8/6/1847 | BIRM |
| Catapodium rigidum | GB, VC29 Cambridgeshire, Devil's Ditch | | Charles Cardale Babington George Stephen West | | BIRM |
| Centaurium latifolium | GB, VC52 Anglesey, Holyhead | Charles Cardale Babington | George Stephen West William West | 12/8/1862 | BIRM |
| Centaurium littorale | GB, Lancashire | Charles Cardale Babington | Allan Octavian Hume Frederick Townsend | 1837 | SLBI |
| Cerastium arcticum | | Hewett Cottrell Watson | Charles Cardale Babington George Stephen West Hewett Cottrell Watson | 1847 | BIRM |
| Cerastium pumilum | GB, VC3 South Devon, Torquay | Frederick Townsend | Charles Cardale Babington Harold Stuart Thompson Norman Douglas Simpson | 22/5/1858 | BIRM |
| Cerastium pumilum | GB, VC3 South Devon, Torquay | N Townend | Charles Cardale Babington George Stephen West William West | 22/5/1858 | BIRM |
| Cerastium pumilum | GB, VC6 North Somerset, Saint Vincent's Rocks | Charles Cardale Babington | George Stephen West William West | | BIRM |
| Cerastium semidecandrum | GB, VC29 Cambridgeshire, Chippenham | Charles Cardale Babington | George Stephen West | 23/6/1859 | BIRM |
| Cerastium tetrandrum | GB, VC3 South Devon, Torquay | Charles Cardale Babington | William West | | BIRM |
+ | Cicendia filiformis | GB, VC113 Channel Islands | Charles Cardale Babington | John Hutton Balfour | 1837 | PTH |
| Clematis vitalba | GB, VC38 Warwickshire, Warwick | | Charles Cardale Babington Frederick Townsend George Stephen West | 9/1845 | BIRM |
| Clinopodium ascendens | GB, VC29 Cambridgeshire, Chippenham, Badlingham | | Shrewsbury Public Library Charles Cardale Babington | 1/8/1855 | K |
| Cochlearia officinalis subsp. scotica | GB, VC90 Angus, Forfarshire,Clova mountains | William Gardiner | Charles Cardale Babington George Stephen West | | BIRM |
| Coincya monensis subsp. cheiranthos | GB, VC113 Channel Islands, Jersey, Saint Aubins Bay | Charles Cardale Babington | Charles Cardale Babington | 1838 | BIRM |
| Consolida ajacis | GB, VC29 Cambridgeshire, Chippenham | Charles Cardale Babington | | 27/7/1859 | BIRM |
| Consolida ajacis | GB, VC29 Cambridgeshire, Chippenham | Charles Cardale Babington | | 27/7/1859 | BIRM |
| Consolida ajacis | GB, VC29 Cambridgeshire, Chippenham | Charles Cardale Babington | | 27/7/1859 | BIRM |
| Consolida ajacis | GB, VC29 Cambridgeshire, Chippenham | Charles Cardale Babington | | 27/7/1859 | BIRM |
| Consolida ajacis | GB, VC29 Cambridgeshire, Gog Magog Hills | Charles Cardale Babington | | 9/8/1852 | BIRM |
+ | Corrigiola litoralis | GB, VC3 South Devon, Slapton | Charles Cardale Babington | John Hutton Balfour | 28/7/1839 | PTH |
+ | Corynephorus canescens | GB, VC27 East Norfolk, Great Yarmouth,Caister | Charles Cardale Babington | Charles Bailey | 6/1840 | MANCH |
+ | Corynephorus canescens | GB, VC113 Channel Islands, Jersey | Charles Cardale Babington | | 7/1837 | MANCH |
+ | Crassula tillaea | GB, VC27 East Norfolk, Edgefield | Charles Cardale Babington | John Hutton Balfour | 6/1836 | PTH |
| Cucubalus baccifer | GB, VC21 Middlesex, Isle of Dogs | Charles Cardale Babington | Charles Cardale Babington S A Chambers | 1853 | SLBI |
| Cuscuta epithymum | GB, VC19 North Essex, Saffron Walden | George Stacey Gibson | Charles Cardale Babington | 1842 | K |
| Cuscuta epithymum | GB, VC29 Cambridgeshire, Cambridge | Charles Cardale Babington | William Jackson Hooker | | K |
| Cuscuta epithymum | GB, VC29 Cambridgeshire, Cambridge | | J Ball Charles Cardale Babington | | K |
| Cuscuta epithymum | GB, VC29 Cambridgeshire, Cambridge | | Botanical Society of Edinburgh Charles Cardale Babington | 8/1848 | K |
| Cuscuta europaea | GB, VC29 Cambridgeshire, Coton | Charles Cardale Babington | Charles Cardale Babington William West | 23/9/1862 | BIRM |
| Cyperus fuscus | GB, VC62 North-east Yorkshire, Guisborough Moor | John Gilbert Baker | Charles Cardale Babington George Stephen West William West | 8/1851 | BIRM |
+ | Cyperus longus | GB, VC8 South Wiltshire, Boyton | Charles Cardale Babington | Warrington Museum William Wilson | 9/1836 | MANCH |
| Cypripedium calceolus | GB, VC66 County Durham, Castle Eden Dene | Temple | Arthur Sidney Shrubbs Charles Cardale Babington George Stephen West | 12/6/1854 | BIRM |
| Daboecia cantabrica | IE, VCH16 West Galway, Clifden | Charles Cardale Babington | George Stephen West | 4/9/1879 | BIRM |
| Dactylorhiza incarnata subsp. incarnata | GB, VC29 Cambridgeshire, Eltisley | Charles Cardale Babington | George Stephen West | 21/6/1853 | BIRM |
| Dianthus deltoides | GB, VC90 Angus, Dundee, Hare Craigs | William Gardiner | Charles Cardale Babington | 1839 | K |
| Digitaria ischaemum | GB, VC17 Surrey, Weybridge | | Charles Cardale Babington George Stephen West W McIvor | 8/1867 | BIRM |
+ | Drosera anglica | GB, VC65 North-west Yorkshire, Leckby Carr | | Botanical Society of Edinburgh Samuel Octavus Gray Charles Cardale Babington | 11/8/1836 | MANCH |