Claytonia perfoliata
Springbeauty
Clinopodium ascendens
Common Calamint
Clinopodium vulgare
Wild Basil
Cochlearia officinalis agg
Common Scurvygrass
Cochlearia officinalis agg.
Scurvygrass
Coeloglossum viride
Frog Orchid
Comarum palustre
Marsh Cinquefoil
Conium maculatum
Hemlock
Conopodium majus
Pignut
Convallaria majalis
Lily-of-the-valley
Cornus capitata
Bentham's Dogwood
Corrigiola litoralis
Strapwort
Corydalis solida
Bird-in-a-bush
Corylus avellana
Hazel
Crambe maritima
Sea-kale
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
Cynoglossum officinale
Hound's-tongue
Cynosurus cristatus
Crested Dog's-tail