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
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