Carduus nutans
Musk Thistle
Carlina vulgaris
Carline Thistle
Carpinus betulus
Hornbeam
Carum carvi
Caraway
Cassia artemisioides
Feathery Cassia
Castanea sativa
Sweet Chestnut
Ceanothus dentatus
Ceanothus
Ceanothus sp.
Ceanothus
Ceanothus thyrsiflorus
Creeping Blueblossom
Cedrus atlantica
Atlas Cedar
Cedrus deodara
Deodar
Cedrus libani
Cedar-of-Lebanon
Centaurea cyanus
Cornflower
Centranthus ruber
Red Valerian
Cercidiphyllum japonicum
Katsura
Cercis siliquastrum
Judas-tree
Chaenomeles japonica
Japanese Quince
Chamaecereus silvestri
Peanut Cactus
Chamaecyparis lawsoniana
Lawson's Cypress
Chamaecyparis obtusa
Hinoki Cypress
Chamelaucium uncinatum
Geraldton waxflower
Chelidonium majus
Greater Celandine
Chlorophytum comosum
Spider-plant
Cistus
Rockrose
Cistus salviifolius
Sage-leaved Rock-rose
Clematis cirrhosa
Early Virgin's-bower
Clematis montana
Himalayan Clematis
Clematis rehderiana
Clematis serratifolia
Korean Clematis
Clematis sp.
Clematis x durandii
Clematis (x#durandii)
Clivia spp.
Colchicum
Colchicum alpinum
Alpine Saffron
Convallaria majalis
Lily-of-the-valley
Coprinus comatus
Shaggy Inkcap
Cordyline australis
Cabbage-palm
Coriandrum sativum
Coriander
Corrigiola litoralis
Strapwort
Cotoneaster cambricus
Wild Cotoneaster
Cotoneaster horizontalis
Wall Cotoneaster
Cotoneaster melanocarpus
Cotoneaster tomentosus
Cotoneaster (tomentosus)
Crambe maritima
Sea-kale
Crataegus monogyna
Hawthorn
Crinum asiaticum
Crinum (asiaticum#var#japonicum)
Crithmum maritimum
Rock Samphire
Crocosmia
Montbretia "Lucifer"
Crocus laevigatus
Crocus (laevigatus)
Crocus sativus
Saffron Crocus
Cucurbita pepo
Marrow
Cupressus nootkatensis
Nootka Cypress
Cupressus x leylandii
Leyland Cypress
Cyclamen coum
Eastern Sowbread
Cyclamen hederifolium
Sowbread
Cydonia oblonga
Quince
Cynara cardunculus
Cardoon
Cyperus fuscus
Brown Galingale
Cypripedium calceolus
Lady's-slipper
Daboecia x scotica
Dahlia (red)
Dahlia (red)
Damasonium alisma
Starfruit
Darlingtonia californica
California Pitcher#Plant
Davidia involucrata
Dove-tree
Delosperma nubigenum
Mesembryanthemum
Dianthus deltoides
Maiden Pink
Dianthus gratianopolitanus
Cheddar Pink
Dianthus petraeus
Pink (Petraeus)
Dicentra formosa
Bleeding-heart
Dierama