Cota tinctoria
Yellow Chamomile
Crassocephalum crepidioides
Redflower Ragleaf
Crataegus monogyna
Hawthorn
Crepis foetida
Stinking Hawk's-beard
Crepis vesicaria
Beaked Hawk's-beard
Crescentia cujete
Calabash Tree
Crossandra infundibuliformis
Firecracker Flower
Crotalaria pallida
Crotalaria
Ctenanthe setosa
Never Never Plant
Cucumis melo
Cantaloupe
Cuphea carthagenensis
Colombian Waxweed
Cuphea hyssopifolia
False Heather
Cyanthillium cinereum
Little Ironweed
Cycas revoluta
Sago Palm
Cymbidium ensifolium
Four-season Orchid
Cymbopogon citratus
West Indian Lemon gGass
Cyperus alternifolius
Cyperus brevifolia
Cyrtostachys renda
Red Sealing Wax Palm
Cystopteris fragilis
Brittle Bladder-fern
Daboecia cantabrica
St Dabeoc's Heath
Dactylorhiza maculata
Heath Spotted-orchid
Dactylorhiza praetermissa
Southern Marsh-orchid
Dactylorhiza purpurella
Northern Marsh-orchid