Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct. Class Magnoliopsida Brongn. (1843) Subclass Caryophyllidae Takht. (1967) see Order Caryophyllales Juss. ex Bercht. & J.Presl (1820) Superorder Caryophyllanae Takht. (1967) Order Caryophyllales Juss. ex Bercht. & J.Presl (1820) Suborder Chenopodiineae Engl. (1898) see Order Caryophyllales Juss. ex Bercht. & J.Presl (1820) Family Amaranthaceae Juss. (1789), nom. cons. - amaranth family Subfamily Amaranthoideae Burnett Tribe Amarantheae Rchb. (1832) Genus Arthraerua (Kuntze) Schinz, in Engl. & Prantl (1893)