| Cleome (many) |
Spider Flower |
 |
| Cleome hassleriana (spinosa) |
Spider Flower |
 |
| Clerodendrum colebrookianum |
Glorybower |
 |
| Clerodendrum myricoides |
Glorybower |
|
| Clerodendrum speciosissimum |
Glorybower, Java Glorybower |
 |
| Clethra barbinervis |
Summer Sweet |
 |
| Clianthus (many) |
Lobster Claw |
|
| Clianthus puniceus |
Lobster Claw |
|
| Clitoria ternatea |
Butterfly Pea |
|
| Clivia miniata |
Kaffir Lily |
|
| Clivia miniata citrina |
Kaffir Lily |
|
| Cobaea scandens |
Cup and Saucer Vine |
|
| Coccoloba uvifera |
Seaside Grape |
|
| Codonopsis |
Codonopsis |
|
| Coffea arabica |
Coffee |
 |
| Colchicum |
Meadow Saffron |
|
| Colutea x media |
Bladder Senna |
|
| Colvillea racemosa |
Colville's Glory |
|
| Commelina coelestis |
Day Flower |
|
| Consolida ajacis |
Larkspur |
|
| Convolvulus althaeoides |
Mallow-leaved Bindweed |
|
| Convolvulus cantabricus |
Cantabrian Morning Glory |
|
| Convolvulus chilensis |
Convolvulus |
|
| Convolvulus sabatius |
Ground Blue Convolvulus |
|
| Convolvulus tricolor |
Morning Glory |
|
| Cordia (sebestina?) |
Geiger Tree, Jungle Geranium |
|
| Cordia myxa |
Assyrian Plum |
|
| Cordyline |
Cabbage Palm |
|
| Coreopsis grandiflora |
Tickseed |
|
| Coreopsis tinctoria |
Tickseed |
|
| Cornus kuosa chinensis |
Dogwood |
|
| Coronilla valentina ssp glauca |
Sea Green |
|
| Cortusa matthioli |
Alpine Bells |
|
| Cortusa turkestanica |
Cortusa |
|
| Corydalis cava |
Bulbous Corydalis |
|
| Corydalis lutea |
Yellow Corydalis |
|
| Corydalis ophiocarpa |
Yellow Corydalis |
|
| Corydalis wilsonii |
Corydalis |
|
| Corymbia calophylla |
Red Gum |
|
| Cosmidium burridgeanum |
Burridge's Greenthread |
|
| Cosmos bipinnatus |
Cosmos |
|
| Costus speciosus |
Crepe Ginger |
|
| Cotyledon orbiculata v orbiculata |
Pig's Ear, Round-leaved Navelwort |
|
| Couropita |
Cannonball Tree |
|
| Crambe abyssinica |
Abyssinian Mustard |
|
| Crataegus monogyna |
Hawthorn, May |
|
| Crepis |
Hawsbeard |
|
| Crescentia alata |
Calabash |
|
| Crinodendron hookerianum |
Lantern Tree |
|
| Crinodendron patagua |
Lily of the Valley Tree |
|
| Crocosmia masoniorum |
Montbretia |
|
| Crocus (many) |
Crocus |
|
| Crocus goulimyi |
Crocus |
|
| Crossandra undulifolia (infundibulifolia) |
Firecracker Flower |
|
| Cryptostegia grandiflora |
Rubber Vine |
|
| Cryptostegia madagascariensis |
Rubber Vine |
|
| Cubanola domingensis |
Cubanola, Tree Lily |
|
| Cuphea viscossima |
Clammy Cuphea |
|
| Cuspidaria convoluta |
Pink Vine |
|
| Cyananthus lobatus |
trailing Bellflower |
|
| Cyananthus microphyllus |
Trailing Bellflower |
|
| Cyclamen (many) |
Cyclamen |
|
| Cyclamen hederifolium |
Cyclamen, Spring Sowbread |
|
| Cyclanthera pedata |
Stuffing Gourd |
|
| Cymbalaria muralis |
Ivy-leaved Toadflax |
|
| Cynara cardunculus |
Cardoon |
|
| Cynoglossum amabile |
Chinese Forget-me-Not |
|
| Cyrtanthus elatus (purpureus) |
Scarborough Lily, Vallota |
|
| Cytisus x praecox |
Broom |
|
