Cornus sanguinea
Dogwood
Corylus avellana
Hazel
Cotoneaster integrifolius
Entire-leaved Cotoneaster
Crassula helmsii
New Zealand Pigmyweed
Crataegus monogyna
Hawthorn
Crataegus rhipidophylla
Crepidotus spp.
Crepis capillaris
Smooth Hawk's-beard
Crepis vesicaria
Beaked Hawk's-beard
Crocus neapolitanus
Spring Crocus
Crocus speciosus
Bieberstein's Crocus
Cruciata laevipes
Crosswort
Cryptogramma crispa
Parsley Fern
Cymbalaria muralis
Ivy-leaved Toadflax
Cynosurus cristatus
Crested Dog's-tail
Cyrtomium fortunei
Fortune's cyrtomium
Cystolepiota hetieri
Cystopteris fragilis
Brittle Bladder-fern
Cytisus scoparius
Broom
Daboecia cantabrica
St Dabeoc's Heath
Dactylis glomerata
Cock's-foot
Dactylorhiza
Dactylorhiza fuchsii
Common Spotted-orchid
Dactylorhiza incarnata
Early Marsh-orchid