 They are registered with an International Cultivar Registration Authority (ICRA), which for the genus "Canna" is the Royal General Bulbgrowers' Association of the Netherlands (KAVB).Cultivars, F1 and F2 hybrids, normally with small species-like flowers, but grown principally for their foliage.This group has occasionally been referred to as the Année Group, after the originator, Théodore Année, the world's first "Canna" hybridizer.