Comtesse Clo requires research.
Canna 'Comtesse d'Hauteville' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Comtesse de Bouchaud' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Comtesse de Breteuil requires research.
Comtesse de L'Estoile requires research.
Comtesse de Sartoux-Thorene requires research.
Comtesse de Sibens requires research.
Comtesse Florence de Sartoux requires research.
Comtesse Florence de Vorteux requires research.
Comtesse Gaston Chandon de Briailles requires research.
concinna Bouché is a synonym of indica var. indica.
Canna 'Conestoga' is a medium-sized Conservatory Group cultivar, with green leaves and yellow flowers.
Canna 'Confetti' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Confetti Pink requires research.
Canna 'Confetti(2)' is a small Crozy Group cultivar, with green leaves and white flowers.
confusa J.W.Richardson & L.B.Sm. is a synonym of paniculata.
Conowingo requires research.
Conquerant requires research.
Conqueror requires research.