Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Rosidae Takht. (1967) see Superorder Rosanae Takht. (1967)
       Superorder Proteanae Takht. (1967)
         Order Proteales Juss. ex Bercht. & J.Presl (1820)
           Family Proteaceae Juss. (1789), nom. cons. - Protea family
             Subfamily Grevilleoideae Engl.
               Tribe Helicieae see Tribe Roupaleae
                 1 Genus Hollandaea F. v. Mueller (1887)
                 2 Genus Helicia Loureiro (1790)
                 3 Genus Xylomelum Sm. (1798)
                 4 Genus Triunia L.A.S.Johnson & B.G.Briggs