Nothovernonia purpurea (Sch.Bip. ex Walp.) H. Rob. and V.A. Funk A head B involucral bract C floret with style branches D style branch with detail of sweeping hairs in square E longitudinal section of floret showing anthers F achene with pappus G achene H detail of achene setulae I examples of raphids from achene wall. by Alice Tangerini (US)