crocea Roem. & Schult. is a synonym of indica var. indica.
Crocodile requires research.
Cronstadt requires research.
Canna 'Croome' is a medium-sized Premier Group cultivar, with green leaves and pink flowers.
Croze Maroc requires research.
Crozy père requires research.
Csokonai requires research.
Csongor requires research.
Canna 'Cupid' is a small Crozy Group cultivar, with green leaves and pink flowers.
curviflora Horan. is a synonym of tuerckheimii Kraenzl..
Cyclop requires research.
Cyclope requires research.
Czar Alexander III requires research.