Christia vespertilionis
Red Butterfly Wing
Chromolaena odorata
Devil Weed
Chrysanthemum indicum
Indian Chrysanthemum
Chrysophyllum cainito
Star Apple
Chrysosplenium alternifolium
Alternate-leaved Golden-saxifrage
Chrysosplenium oppositifolium
Opposite-leaved Golden-saxifrage
Chrysothemis pulchella
Sunset Bells
Cichorium intybus
Chicory
Circaea alpina
Alpine Enchanter's-nightshade
Circaea lutetiana
Enchanter's-nightshade
Circaea x intermedia
Upland Enchanter's-nightshade
Cirsium oleraceum
Cabbage Thistle
Cirsium palustre
Marsh Thistle
Cissus verticillata
Princess Vine
Clathrus archeri
Claytonia sibirica
Pink Purslane
Cleome rutidosperma
Fringed Spider Flower
Cleome spinosa
Spiny Spiderflower
Cleome viscosa
Asian Spiderflower
Clerodendron chinensis
Glory Bower
Clerodendron paniculatum
Pagoda Flower
Clerodendron quadriloculare
Starburst Bush
Clinopodium vulgare
Wild Basil
Clitocybe olearia
Clitoria ternatea
Asian Pigeonwings
Cnidoscolus aconitifolius
Chaya
Coccinia grandis
Ivy Gourd
Cochlearia officinalis agg
Common Scurvygrass
Cocos nucifera
Coconut
Codiaenum variegatum
Fire Croton
Coffea arabica
Coffee
Coleus amboinicus
Cuban Oregano
Coleus decurrens
Coleus
Coleus scutellarioides
Coleus
Colobanthus quitensis
Antarctic pearlwort
Colobanthus quitensis and Deschampsia antarctica
Comarum palustre
Marsh Cinquefoil
Combretum indicum
Rangoon Creeper
Commelina benghalensis
Benghal Dayflower
Commelina diffusa
Climbing Dayflower
Commersonia bartramia
Conium maculatum
Hemlock
Conocarpus erectus
Buttonwood
Convallaria majalis
Lily-of-the-valley
Coprinus comatus
Shaggy Inkcap
Coprinus picaceus
Magpie Inkcap
Corchorus aestuans
East Indian Jute Mallow
Corchorus olitorius
Jute Mallow
Cordyline fruticosa
Ti Plant
Coreopsis lanceolata
Lanceleaf Coreopsis
Corydalis solida
Bird-in-a-bush
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
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
Crinum jagus
Saint Christopher's Lily
Crossandra infundibuliformis
Firecracker Flower
Crotalaria pallida
Crotalaria
Croton bonplandianus
Ctenanthe setosa
Never Never Plant
Cucumis melo
Cantaloupe
Cuphea carthagenensis
Colombian Waxweed