Cotoneaster integrifolius
Entire-leaved Cotoneaster
Cotoneaster melanocarpus
Cotoneaster tomentosus
Cotoneaster (tomentosus)
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 biennis
Rough Hawk's-beard
Crepis capillaris
Smooth Hawk's-beard
Crepis foetida
Stinking Hawk's-beard
Crepis vesicaria
Beaked Hawk's-beard
Crescentia cujete
Calabash Tree
Crinum asiaticum
Crinum (asiaticum#var#japonicum)
Crinum jagus
Saint Christopher's Lily
Crithmum maritimum
Rock Samphire
Crocosmia
Montbretia "Lucifer"
Crocosmia x crocosmiiflora
Montbretia
Crocus laevigatus
Crocus (laevigatus)
Crocus neapolitanus
Spring Crocus
Crocus nudiflorus
Autumn Crocus
Crocus sativus
Saffron Crocus
Crocus speciosus
Bieberstein's Crocus
Crocus tommasinianus
Early Crocus
Crocus x luteus
Yellow Crocus
Crossandra infundibuliformis
Firecracker Flower
Crotalaria pallida
Crotalaria
Croton bonplandianus
Cruciata laevipes
Crosswort
Cryptogramma crispa
Parsley Fern
Cryptomeria japonica
Japanese Red-cedar
Ctenanthe setosa
Never Never Plant
Cucumis melo
Cantaloupe
Cucurbita pepo
Marrow
Cuphea carthagenensis
Colombian Waxweed
Cuphea hyssopifolia
False Heather
Cupressus nootkatensis
Nootka Cypress
Cupressus x leylandii
Leyland Cypress
Cuscuta epithymum
Dodder
Cuscuta europaea
Greater Dodder
Cyanthillium cinereum
Little Ironweed
Cyathea arborea
West Indian Treefern
Cycas circinalis
Queen Sago
Cycas revoluta
Sago Palm
Cyclamen coum
Eastern Sowbread
Cyclamen hederifolium
Sowbread
Cydonia oblonga
Quince
Cymbalaria muralis
Ivy-leaved Toadflax
Cymbidium ensifolium
Four-season Orchid
Cymbopogon citratus
West Indian Lemon Grass
Cynara cardunculus
Cardoon
Cynoglossum officinale
Hound's-tongue
Cynosurus cristatus
Crested Dog's-tail
Cyperus alternifolius
Cyperus brevifolia
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
Blume
Cystopteris fragilis
Brittle Bladder-fern
Cytisus scoparius
Broom
Daboecia cantabrica
St Dabeoc's Heath
Daboecia x scotica
Dactylis glomerata
Cock's-foot