Crambe maritima
Sea-kale
Crassocephalum crepidioides
Redflower Ragleaf
Crataegus laevigata
Midland Hawthorn
Crepis capillaris
Smooth Hawk's-beard
Crepis foetida
Stinking Hawk's-beard
Crepis vesicaria
Beaked Hawk's-beard
Crocosmia x crocosmiiflora
Montbretia
Crocus tommasinianus
Early Crocus
Cruciata laevipes
Crosswort
Cyanthillium cinereum
Little Ironweed
Cynoglossum officinale
Hound's-tongue
Cynosurus cristatus
Crested Dog's-tail
Cyperus brevifolia
Cyperus fuscus
Brown Galingale
Cypripedium calceolus
Lady's-slipper
Cytisus scoparius
Broom
Daboecia cantabrica
St Dabeoc's Heath
Daboecia x scotica
Dactylorhiza
Dactylorhiza fuchsii
Common Spotted-orchid
Dactylorhiza incarnata
Early Marsh-orchid
Dactylorhiza maculata
Heath Spotted-orchid
Dactylorhiza praetermissa
Southern Marsh-orchid
Dactylorhiza purpurella
Northern Marsh-orchid