Coeloglossum viride
Frog Orchid
Colchicum autumnale
Meadow Saffron
Comarum palustre
Marsh Cinquefoil
Conopodium majus
Pignut
Convallaria majalis
Lily-of-the-valley
Convolvulus arvensis
Field Bindweed
Cornus sanguinea
Dogwood
Corrigiola litoralis
Strapwort
Corylus avellana
Hazel
Crambe maritima
Sea-kale
Crataegus laevigata
Midland Hawthorn
Crataegus monogyna
Hawthorn
Crepis biennis
Rough Hawk's-beard
Crepis capillaris
Smooth Hawk's-beard
Crithmum maritimum
Rock Samphire
Cruciata laevipes
Crosswort
Cryptogramma crispa
Parsley Fern
Cuscuta epithymum
Dodder
Cuscuta europaea
Greater Dodder
Cynoglossum officinale
Hound's-tongue
Cynosurus cristatus
Crested Dog's-tail
Cyperus fuscus
Brown Galingale
Cypripedium calceolus
Lady's-slipper
Cystopteris fragilis
Brittle Bladder-fern