Zygophyllaceae R. Br. Including Nitrariaceae Lindl., Peganaceae Van Tiegh., Tribulaceae Trautv. Habit and leaf form . Plants succulent, or non-succulent.
Leaves stipulate .
Leaves without a persistent basal meristem. Leaf anatomy . Adaxial hypodermis present, or absent. Stem anatomy . Internal phloem absent.