| Calycomyza platyptera |
|
| Calyptocarpus vialis |
Straggler Daisy |
| Calythea monticola |
|
| Camellia japonica |
Japanese Camellia |
| Camillina elegans |
Pearly-Eyed Ground Spider |
| Campanula medium |
Canterbury Bells |
| Campoletis sonorensis |
|
| Camponotus pennsylvanicus |
|
| Campsis radicans |
Trumpet Creeper; Orange Trumpet Vine |
| Canna glauca |
Yellow Canna |
| Canna hybrida |
Canna Lily |
| Canna indica |
Wild Canna Lily; Indian Shot; Tous-Les-Mois |
| Cannabis sativa |
Marijuana |
| Capraria biflora |
Goatweed; Goat Weed |
| Capsella bursa-pastoris |
Shepherd's Purse; Shepard's Purse |
| Capsicum annuum |
Chili Peppers |
| Capsicum chinense |
Habanero Pepper; Habanero Chile Pepper |
| Capsicum frutescens |
Wild Pepper; Spanish Pepper |
| Cardinalis cardinalis |
Northern Cardinal |
| Cardiocondyla emeryi |
|
| Cardiocondyla minutior |
|
| Cardiocondyla obscurior |
|
| Cardiospermum grandiflorum |
Wild Supple Jack; Showy Balloon Vine; Large Flowered Balloon Vine |
| Cardiospermum halicacabum |
Balloon Vine; Large Fruited Balloon Vine |
| Carduelis carduelis |
Eurasian Goldfinch; European Goldfinch |
| Cariblatta antiguensis |
|
| Cariblatta minima |
|
| Carica papaya |
Pawpaw; Paw Paw |
| Carissa macrocarpa |
Natal Plum |
| Carludovica palmata |
Panama Hat Plant |
