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 Geranianae Takht. (1997), nom. inval. see Order Geraniales Juss. ex Bercht. & J.Presl (1820) Order Zygophyllales Link (1829) Suborder Zygophyllineae see Order Zygophyllales Link (1829) Family Zygophyllaceae R.Br. (1814), nom. cons. - creosote-bush family Subfamily Zygophylloideae Arn. Tribe Morkillieae Genus Morkillia J.N. Rose & Painter (1907)