arecidae: one of four subclasses or superorder of Monocotyledones; comprises about 6400 species in 5 families of trees and shrubs and terrestrial herbs and a few free-floating aquatics including: Palmae; Araceae; Pandanaceae and Lemnaceae
haplopappus: genus of North and South American perennial herbs or shrubs with yellow flowers; in some classifications include species placed in other genera especially Hazardia