The Families of Flowering Plants L. Watson and M. J. Dallwitz Acanthaceae Juss. Including Justiciaceae Rafin., Thomandersiaceae Sreemadhavan Excluding Nelsoniaceae , Mendonciaceae , Thunbergiaceae Habit and leaf form .
Leaves exstipulate .
Leaf anatomy . Abaxial epidermis papillose, or not papillose. Mucilaginous epidermis absent. Unicellular hairs branched, or unbranched. Multicellular hairs branched, or unbranched.