polymorpha Lodd. ex Loudon is a synonym of indica var. indica.
Each cell of a canna plant naturally has 18 chromosomes, or 9 pairs of chromosomes from the seed and pollen parents respectively. These plants with their paired chromosomes are termed diploid, from the Greek word for "double".
Canna 'Pomone' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Porcelain Petals' is a small Premier Group cultivar, with green leaves and white flowers.
Porcelain Rose requires research.
Porcelana requires research.
Canna 'Port Denison' is a medium-sized Premier Group cultivar, with dark leaves and pink flowers.
Port Douglass requires research.
Porteana requires research.
portoricensis Bouché is a synonym of indica var. indica.
Canna 'Powick' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Praetoria is a synonym of Bengal Tiger.
Canna 'Präsident Meyer' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Preczner Gábor Emléke requires research.
Canna 'Preference' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Prelude requires research.
Canna 'Prémices de Nice' is a medium-sized Foliage Group cultivar, with green leaves and multi-coloured flowers.
President_x000D_
Canna 'President'
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see Mr President_x000D_
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Canna 'President' - see Mr President
President (Pink) is a synonym of Mrs Alfred F. Conard.