textoria Noronha is a synonym of indica var. indica.
Canna 'Thai Princess' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Thai Rainbow requires research.
Thai Sunray is a synonym of Britannia.
Canna 'Thai Watermelon' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Thai-Green requires research.
Canna 'Thai-Purple' is a tall Agriculture Group cultivar, with dark leaves and red flowers.
Thalia Red is a synonym of Thalie.
Thalie requires research.
The Amabassador is a synonym of Ambassador.
The Duke requires research.
Canna 'The Garden' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Canna 'The Gem (1)' is a medium-sized Crozy Group cultivar, with green leaves and white flowers.
The Gem (2) is a synonym of Oiseau de Feu.
Canna 'The President' is a medium-sized Premier Group cultivar, with green leaves and red flowers.
The Queen requires research.
Theophilus Viard requires research.
Theresa is a synonym of CannaSun™ Theresa.
Canna 'Theresa Blakey' is a small Crozy Group cultivar, with dark leaves and multi-coloured flowers.
Thibauti requires research.