 The flowers are hermaphrodite.In the last three decades of the 20th century, "Canna" species have been categorised by two different taxonomists, Paulus Johannes Maria Maas from the Netherlands and Nobuyuki Tanaka from Japan.In this case both agree that "C. flaccida" is a distinct species, and the DNA work by Prince and Kress at the Smithsonian Institution confirms its uniqueness.