Campanula patula
Spreading Bellflower
Campanula trachelium
Nettle-leaved Bellflower
Cardamine flexuosa
Wavy Bitter-cress
Cardamine impatiens
Narrow-leaved Bitter-cress
Cardamine pratensis
Cuckooflower
Carduus crispus
Welted Thistle
Carduus nutans
Musk Thistle
Carduus tenuiflorus
Slender Thistle
Carex disticha
Brown Sedge
Carex panicea
Carnation Sedge
Carex pilulifera
Pill Sedge
Carex rostrata
Bottle Sedge
Catapodium rigidum
Fern-grass
Centaurea scabiosa
Greater Knapweed
Centaurium portense
Perennial Centaury
Cephalanthera damasonium
White Helleborine
Cerastium alpinum
Alpine Mouse-ear
Cerastium fontanum
Common Mouse-ear
Cerastium semidecandrum
Little Mouse-ear
Cerastium x maureri
Ceratophyllum demersum
Rigid Hornwort
Cercidiphyllum japonicum
Katsura
Chaerophyllum temulum
Rough Chervil
Chara aspera
Rough Stonewort
Chara virgata
Delicate Stonewort
Chenopodium vulvaria
Stinking Goosefoot
Chrysosplenium alternifolium
Alternate-leaved Golden-saxifrage
Chrysosplenium oppositifolium
Opposite-leaved Golden-saxifrage
Cichorium intybus
Chicory
Circaea alpina
Alpine Enchanter's-nightshade
Circaea x intermedia
Upland Enchanter's-nightshade
Cirsium dissectum
Meadow Thistle
Cirsium heterophyllum
Melancholy Thistle
Cirsium oleraceum
Cabbage Thistle
Cirsium palustre
Marsh Thistle
Cirsium vulgare
Spear Thistle
Cirsium x celakovskianum
Clinopodium acinos
Basil Thyme
Clinopodium vulgare
Wild Basil
Cochlearia danica
Danish Scurvygrass
Cochlearia officinalis
Common Scurvygrass
Colchicum alpinum
Alpine Saffron
Colchicum autumnale
Meadow Saffron
Comarum palustre
Marsh Cinquefoil
Conium maculatum
Hemlock
Cornus sanguinea
Dogwood
Corylus avellana
Hazel
Cotoneaster cambricus
Wild Cotoneaster
Crassula helmsii
New Zealand Pigmyweed
Crataegus laevigata
Midland Hawthorn
Crepis foetida
Stinking Hawk's-beard
Crepis vesicaria
Beaked Hawk's-beard
Cruciata laevipes
Crosswort
Cryptomeria japonica
Japanese Red-cedar
Cuscuta epithymum
Dodder
Cyrtomium fortunei
Fortune's cyrtomium
Cystopteris fragilis
Brittle Bladder-fern
Cytisus scoparius
Broom
Daboecia cantabrica
St Dabeoc's Heath
Daboecia x scotica
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
Daphne laureola
Spurge-laurel
Daucus carota
Carrot
Dianthus deltoides
Maiden Pink
Diplotaxis muralis
Annual Wall-rocket
Dipsacus fullonum
Wild Teasel