Canna 'Carnaval (1)' is a tall Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Carnaval (2)' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
carnea Roscoe is a synonym of indica var. indica.
Canna 'Carolina Gold' is a medium-sized Premier Group cultivar, with dark leaves and yellow flowers.
Canna 'Carolina Moonglow' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Carolina Pink' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Caroni is a synonym of glauca f. Caroni.
Canna 'Carousel' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Carrillon requires research.
Canna 'Castagniès' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Casteldor' is a small Crozy Group cultivar, with green leaves and yellow flowers.
Cattleya is a synonym of Allemania.
Cavalaire requires research.
cearensis Huber. is a synonym of indica var. indica.
Canna 'Celine Lover' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Centenaire is a synonym of Centenaire de Rozain-Boucharlat.
Centenaire de Rozain Boucharlat is a synonym of Centenaire de Rozain-Boucharlat.
Canna 'Centenaire de Rozain-Boucharlat' is a medium-sized Premier Group cultivar, with green leaves and pink flowers.
Centenaire de Rozain-Bourcharlat is a synonym of Centenaire de Rozain-Boucharlat.
Centenárium requires research.