Colchicum autumnale
Meadow Saffron
Coleus amboinicus
Cuban Oregano
Coleus decurrens
Coleus
Coleus scutellarioides
Coleus
Colobanthus quitensis
Antarctic pearlwort
Comarum palustre
Marsh Cinquefoil
Conium maculatum
Hemlock
Conocarpus erectus
Buttonwood
Conopodium majus
Pignut
Convallaria majalis
Lily-of-the-valley
Convolvulus arvensis
Field Bindweed
Cordyline australis
Cabbage-palm
Cordyline fruticosa
Ti Plant
Coreopsis lanceolata
Lanceleaf Coreopsis
Cornus capitata
Bentham's Dogwood
Corrigiola litoralis
Strapwort
Cosmos Sulphureus
Sulfur Cosmos
Costus dubius
Spiral Flag
Costus elegans
Stepladder Ginger
Cotoneaster cambricus
Wild Cotoneaster
Cotoneaster integrifolius
Entire-leaved Cotoneaster
Couroupita guianensis
Cannonball tree
Crambe maritima
Sea-kale
Crassocephalum crepidioides
Redflower Ragleaf
Crassula helmsii
New Zealand Pigmyweed
Crataegus laevigata
Midland Hawthorn
Crataegus monogyna
Hawthorn
Crataegus rhipidophylla
Crepis capillaris
Smooth Hawk's-beard
Crepis foetida
Stinking Hawk's-beard
Crepis vesicaria
Beaked Hawk's-beard
Crithmum maritimum
Rock Samphire
Crocosmia x crocosmiiflora
Montbretia
Crocus laevigatus
Crocus (laevigatus)
Crocus neapolitanus
Spring Crocus
Crocus nudiflorus
Autumn Crocus
Crocus tommasinianus
Early Crocus
Crocus x luteus
Yellow Crocus
Cruciata laevipes
Crosswort
Cryptogramma crispa
Parsley Fern
Cryptomeria japonica
Japanese Red-cedar
Cupressus nootkatensis
Nootka Cypress
Cuscuta epithymum
Dodder
Cuscuta europaea
Greater Dodder
Cyathea arborea
West Indian Treefern
Cycas circinalis
Queen Sago
Cycas revoluta
Sago Palm
Cydonia oblonga
Quince
Cymbalaria muralis
Ivy-leaved Toadflax
Cymbopogon citratus
West Indian Lemon Grass
Cynara cardunculus
Cardoon
Cynoglossum officinale
Hound's-tongue
Cynosurus cristatus
Crested Dog's-tail
Cyperus alternifolius
Cyperus fuscus
Brown Galingale
Cyperus javanicus
Javanese Flatsedge
Cyperus mindorensis
White-Head Spike Sedge
Cyperus papyrus
Papyrus Sedge
Cypripedium calceolus
Lady's-slipper
Cyrtomium fortunei
Fortune's cyrtomium
Cyrtophyllum fragrans
Tembusu
Cyrtostachys renda
Red Sealing Wax Palm
Cystopteris fragilis
Brittle Bladder-fern
Cytisus scoparius
Broom
Daboecia cantabrica
St Dabeoc's Heath
Daboecia x scotica
Dactyloctenium sp.
A Crowfoot Grass
Dactylorhiza fuchsii
Common Spotted-orchid
Dactylorhiza incarnata
Early Marsh-orchid
Dactylorhiza maculata
Heath Spotted-orchid