| Cabomba | Cabombaceae |
| Cakile | Brassicaceae |
| Calamagrostis | Poaceae |
| Calendula | Asteraceae |
| Calibrachoa | Solanaceae |
| Calla | Araceae |
| Callistephus | Asteraceae |
| Callitriche | Callitrichaceae |
| Calluna | Ericaceae |
| Calopogon | Orchidaceae |
| Caltha | Ranunculaceae |
| Calylophus | Onagraceae |
| Calypso | Orchidaceae |
| Calystegia | Convolvulaceae |
| Camelina | Brassicaceae |
| Camissonia | Onagraceae |
| Campanula | Campanulaceae |
| Campsis | Bignoniaceae |
| Cannabis | Cannabaceae |
| Capsella | Brassicaceae |
| Capsicum | Solanaceae |
| Caragana | Fabaceae |
| Cardamine | Brassicaceae |
| Cardaria | Brassicaceae |
| Cardiospermum | Sapindaceae |
| Carduus | Asteraceae |
| Carex | Cyperaceae |
| Carpinus | Betulaceae |
| Carthamus | Asteraceae |
| Carum | Apiaceae |
| Carya | Juglandaceae |
| Castanea | Fagaceae |
| Castilleja | Scrophulariaceae |
| Catalpa | Bignoniaceae |
| Caulophyllum | Berberidaceae |
| Ceanothus | Rhamnaceae |
| Celastrus | Celastraceae |
| Celosia | Amaranthaceae |
| Celtis | Ulmaceae |
| Cenchrus | Poaceae |
| Centaurea | Asteraceae |
| Centaurium | Gentianaceae |
| Cephalanthus | Rubiaceae |
| Cerastium | Caryophyllaceae |
| Ceratophyllum | Ceratophyllaceae |
| Cercidiphyllum | Cercidiphyllaceae |
| Cercis | Fabaceae |
| Chaenorrhinum | Scrophulariaceae |
| Chamaecrista | Fabaceae |
| Chamaecyparis | Cupressaceae |
| Chamaedaphne | Ericaceae |
| Chamaelirium | Liliaceae |
| Chamaesyce | Euphorbiaceae |
| Cheilanthes | Pteridaceae |
| Chelidonium | Papaveraceae |
| Chelone | Scrophulariaceae |
| Chenopodium | Chenopodiaceae |
| Chimaphila | Pyrolaceae |
| Chionanthus | Oleaceae |
| Chloris | Poaceae |
| Choenomeles | Rosaceae |
| Chorispora | Brassicaceae |
| Chorizanthe | Polygonaceae |
| Chrysanthemum | Asteraceae |
| Chrysosplenium | Saxifragaceae |
| Cicer | Fabaceae |
| Cichorium | Asteraceae |
| Cicuta | Apiaceae |
| Cimicifuga | Ranunculaceae |
| Cinna | Poaceae |
| Circaea | Onagraceae |
| Cirsium | Asteraceae |
| Citrullus | Cucurbitaceae |
| Cladium | Cyperaceae |
| Claytonia | Portulacaceae |
| Clematis | Ranunculaceae |
| Cleome | Capparaceae |
| Clethra | Clethraceae |
| Clinopodium | Lamiaceae |
| Clintonia | Liliaceae |
| Cnicus | Asteraceae |
| Coeloglossum | Orchidaceae |
| Colchicum | Liliaceae |
| Collinsonia | Lamiaceae |
| Collomia | Polemoniaceae |
| Colutea | Fabaceae |
| Comandra | Santalaceae |
| Comarum | Rosaceae |
| Commelina | Commelinaceae |
| Comptonia | Myricaceae |
| Conioselinum | Apiaceae |
| Conium | Apiaceae |
| Conopholis | Orobanchaceae |
| Conringia | Brassicaceae |
| Consolida | Ranunculaceae |
| Convallaria | Liliaceae |
| Convolvulus | Convolvulaceae |
| Conyza | Asteraceae |
| Coptis | Ranunculaceae |
| Corallorrhiza | Orchidaceae |
| Corema | Empetraceae |
| Coreopsis | Asteraceae |
| Coriandrum | Apiaceae |
| Cornus | Cornaceae |
| Coronilla | Fabaceae |
| Coronopus | Brassicaceae |
| Corydalis | Fumariaceae |
| Corylus | Betulaceae |
| Corynephorus | Poaceae |
| Cosmos | Asteraceae |
| Cotinus | Anacardiaceae |
| Cotula | Asteraceae |
| Crassula | Crassulaceae |
| Crataegus | Rosaceae |
| Crepis | Asteraceae |
| Crocus | Iridaceae |
| Crotalaria | Fabaceae |
| Croton | Euphorbiaceae |
| Crupina | Asteraceae |
| Crypsis | Poaceae |
| Cryptantha | Boraginaceae |
| Cryptogramma | Pteridaceae |
| Cryptotaenia | Apiaceae |
| Cucumis | Cucurbitaceae |
| Cucurbita | Cucurbitaceae |
| Cuminum | Apiaceae |
| Cuphea | Lythraceae |
| Cuscuta | Cuscutaceae |
| Cycloloma | Chenopodiaceae |
| Cydonia | Rosaceae |
| Cymbalaria | Scrophulariaceae |
| Cynanchum | Asclepiadaceae |
| Cynodon | Poaceae |
| Cynoglossum | Boraginaceae |
| Cynosurus | Poaceae |
| Cyperus | Cyperaceae |
| Cypripedium | Orchidaceae |
| Cystopteris | Dryopteridaceae |
| Cytisus | Fabaceae |
Last Update: 1/6/97
Name: Ray Phillips
Email: rbphilli@Colby.edu