HeliconiaHanbat Arboretum Tropical Garden Heliconia, the only genus in the family Heliconiaceae, is among the fastest-expanding groups of ornamental plants. Fred Berry and W. John Kress, Who Published the first book on the subject in 1991, estimated that there were from 200 to 250 named species and almost that many forms or cultivars; in the relatively few years since then, nu..