Common Name - -	Family : Order
Cacao tree - -	Malvaceae : Malvales
Cade juniper - -	Cupressaceae : Pinales
Calabash tree - -	Bignoniaceae : Lamiales
Calamondin - -	Rutaceae : Sapindales
California privet - -	Oleaceae : Lamiales
Callused catasetum - -	Orchidaceae : Asparagales
Canada thistle - -	Asteraceae : Asterales
Canary Islands juniper - -	Cupressaceae : Pinales
Candle plant - -	Asteraceae : Asterales
Cane orchid - -	Orchidaceae : Asparagales
Cannonball tree - -	Lecythidaceae : Ericales
Cape fig - -	Moraceae : Rosales
Cape jasmine - -	Rubiaceae : Gentianales
Caper bean - -	Orchidaceae : Asparagales
Caraway - -	Apiaceae : Apiales
Cardboard palm - -	Zamiaceae : Cycadales
Cat-face orchid - -	Orchidaceae : Asparagales
Cathedral bells - -	Polemoniaceae : Ericales
Ceibo tree - -	Malvaceae : Malvales
Chalk fragrant orchid - -	Orchidaceae : Asparagales
Chatham Island Christmas tree - -	Asteraceae : Asterales
Checkered vanda - -	Orchidaceae : Asparagales
Chilean evening-primrose - -	Onagraceae : Myrtales
China rose - -	Rosaceae : Rosales
Chinese banyan tree - -	Moraceae : Rosales
Chinese cabbage - -	Brassicaceae : Brassicales
Chinese cucumber - -	Cucurbitaceae : Cucurbitales
Chinese okra - -	Cucurbitaceae : Cucurbitales
Chinese rice flower - -	Meliaceae : Sapindales
Chinese star jessamine - -	Apocynaceae : Gentianales
Chinese tazette - -	Amaryllidaceae : Asparagales
Chinese tulip tree - -	Magnoliaceae : Magnoliales
Chinese wistaria - -	Fabaceae : Fabales
Chives - -	Amaryllidaceae : Asparagales
Christmas orchid - -	Orchidaceae : Asparagales
Chulantree - -	Chloranthaceae : Chloranthales
Cirrhaea-like cataseum - -	Orchidaceae : Asparagales
Citron - -	Rutaceae : Sapindales
Clary sage - -	Lamiaceae : Lamiales
Climbing groundsel - -	Asteraceae : Asterales
Clove pink - -	Caryophyllaceae : Caryophyllales
Cobb's dendrochilum - -	Orchidaceae : Asparagales
Coconut pie orchid - -	Orchidaceae : Asparagales
Coligallo palm - -	Arecaceae : Arecales
Colorado four o'clock - -	Nyctaginaceae : Caryophyllales
Common buck burnet saxifrage - -	Apiaceae : Apiales
Common button orchid - -	Orchidaceae : Asparagales
Common buttonbush - -	Rubiaceae : Gentianales
Common chicory - -	Asteraceae : Asterales
Common corncockle - -	Caryophyllaceae : Caryophyllales
Common elderberry - -	Adoxaceae : Dipsacales
Common evening-primrose - -	Onagraceae : Myrtales
Common fig - -	Moraceae : Rosales
Common grape vine - -	Vitaceae : Vitales
Common jasmine - -	Oleaceae : Lamiales
Common juniper - -	Cupressaceae : Pinales
Common kidneyvetch - -	Fabaceae : Fabales
Common lantana - -	Verbenaceae : Lamiales
Common lilac - -	Oleaceae : Lamiales
Common linden - -	Malvaceae : Malvales
Common pear - -	Rosaceae : Rosales
Common sunflower - -	Asteraceae : Asterales
Common Thyme- leaved calamint - -	Lamiaceae : Lamiales
Common twayblade - -	Orchidaceae : Asparagales
Common violet - -	Violaceae : Malpighiales
Common yarrow - -	Asteraceae : Asterales
Consul schiller's cattleya - -	Orchidaceae : Asparagales
Coontie - -	Zamiaceae : Cycadales
Copa palm - -	Arecaceae : Arecales
Corinthian catchfly - -	Caryophyllaceae : Caryophyllales
Corn poppy - -	Papaveraceae : Ranunculales
Corydale - -	Papaveraceae : Ranunculales
Corymbed burnet saxifrage - -	Apiaceae : Apiales
Costmary - -	Asteraceae : Asterales
Cow parsnip - -	Umbelliferae : Apiales
Cowslip - -	Primulaceae : Ericales
Coyote tobacco - -	Solanaceae : Solanales
Creeping savory - -	Lamiaceae : Lamiales
Creeping willow - -	Salicaceae : Malpighiales
Cretan arum - -	Araceae : Alismatales
Cretan catchfly - -	Caryophyllaceae : Caryophyllales
Cretan oregano - -	Lamiaceae : Lamiales
Cretan sage - -	Lamiaceae : Lamiales
Crimson cattleya - -	Orchidaceae : Asparagales
Cuatrecasasas daffodil - -	Amaryllidaceae : Asparagales
Cuckoo flower - -	Caryophyllaceae : Caryophyllales
Cuckoo-pint - -	Araceae : Alismatales
Cucumber tree - -	Bignoniaceae : Lamiales
Cucumbertree - -	Magnoliaceae : Magnoliales
Cuneate savory - -	Lamiaceae : Lamiales