What is "hellenia"

Hellenia is a group of plants in the Costaceae described as a genus with this name in 1791. It is native to Southeast Asia, southern China, the Indian Subcontinent, New Guinea, and Queensland.

1. Hellenia globosa (Blume) S.R.Dutta - Thailand, Peninsular Malaysia, Borneo, Sumatra, Java
2. Hellenia speciosa (J.Koenig) S.R.Dutta - China, Indian Subcontinent, Andaman & Nicobar, Indochina, Malaysia, Indonesia, Philippines, New Guinea, Bismarck Archipelago, Queensland; naturalized in Mauritius, Réunion, Hawaii, Central America, West Indies

now in other genera: Alpinia Hornstedtia Plagiostachys