As we all know, C. 'Tropicanna' is a registered commercial name.
It's origins are in Africa & was originally known as C. 'Phasion'.
Other names it is known as are: C. Andaloucia’, C. Durban [Europe], C. Franciscus, C. Gold Ader, C. Inferno, C. Tiger Stripe, C. Tropicana, C. Tropicanna.
Serious canna collectors refer to this canna by it's original name of 'Phasion' .. they are not different cannas, but the same .. they do not produce any viable seeds, being infertile, & the ONLY way to grow this canna is by rhizome divisions.