Clinopodium ascendens
Common Calamint
Clinopodium vulgare
Wild Basil
Clitoria ternatea
Asian Pigeonwings
Clivia spp.
Cnidoscolus aconitifolius
Chaya
Coastal Redwood fallen - re-growing
Coastal Redwood
Coccinia grandis
Ivy Gourd
Cochlearia anglica
English Scurvygrass
Cochlearia danica
Danish Scurvygrass
Cochlearia officinalis
Common Scurvygrass
Cochlearia officinalis agg
Common Scurvygrass
Cochlearia officinalis agg.
Scurvygrass
Cocos nucifera
Coconut
Codiaenum variegatum
Fire Croton
Coeloglossum viride
Frog Orchid
Coffea arabica
Coffee
Colchicum
Colchicum alpinum
Alpine Saffron
Colchicum autumnale
Meadow Saffron
Coleus amboinicus
Cuban Oregano
Coleus decurrens
Coleus
Coleus scutellarioides
Coleus
Colobanthus quitensis
Antarctic pearlwort
Comarum palustre
Marsh Cinquefoil
Combretum indicum
Rangoon Creeper
Commelina benghalensis
Benghal Dayflower
Commelina diffusa
Climbing Dayflower
Commersonia bartramia
Conium maculatum
Hemlock
Conocarpus erectus
Buttonwood
Conocarpus lancifolius
Qalab
Conopodium majus
Pignut
Convallaria majalis
Lily-of-the-valley
Convolvulus arvensis
Field Bindweed
Corchorus aestuans
East Indian Jute Mallow
Corchorus olitorius
Jute Mallow
Cordyline australis
Cabbage-palm
Cordyline fruticosa
Ti Plant
Coreopsis lanceolata
Lanceleaf Coreopsis
Coriandrum sativum
Coriander
Cornus capitata
Bentham's Dogwood
Cornus sanguinea
Dogwood
Corrigiola litoralis
Strapwort
Corydalis solida
Bird-in-a-bush
Corylus avellana
Hazel
Cosmos caudatus
King's Salad
Cosmos Sulphureus
Sulfur Cosmos
Costus dubius
Spiral Flag
Costus elegans
Stepladder Ginger
Costus guanaiensis
Spiral Ginger
Costus pictus
Painted Spiral Ginger
Costus spiralis
Cota tinctoria
Yellow Chamomile
Cotoneaster cambricus
Wild Cotoneaster
Cotoneaster franchetii
Franchet's Cotoneaster
Cotoneaster horizontalis
Wall Cotoneaster
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
Crateva religiosa
Sacred Garlic Pear
Crepis biennis
Rough Hawk's-beard
Crepis capillaris
Smooth Hawk's-beard
Crepis foetida
Stinking Hawk's-beard