- chlamyphore
- chlamyphorus truncatus
- common foxglove
- cock_and_bull story
- calypso bulbosa
- calypso
- church
- Church of Scientology
- Christian church
- congregation
- common salt
- condensate
- charles frederick worth
- clofibrate
- Carafate
- cold medicine
- cathartic
- clopidogrel bisulfate
- counterirritant
- carminative
- coin it
- coin bank
- coin money
- catmint
- common unicorn plant
- costusroot
- camphor dune tansy
- Cichorium intybus
- common devil's claw
- cumin
- cilantro
- Carthamus tinctorius
- climbing onion
- coreopsis
- Celosia argentea cristata
- clammy chickweed
- cumfrey
- Catharanthus roseus
- chamois cress
- chicory
- coolwart
- cat's feet
- corn salad
- Coriandrum sativum
- Cichorium endivia
- cultivated carrot
- coriander
- cow parsley
- clover
- cow parsnip