Acanthaceae - Acanthus Family

Flowers:

2 lipped. Upper li[ usually 2-lobed. Lower lip usually 3-lobed. 2 or 4 stamen, if 4 usually in two uneven pairs. 4-5 sepals.

Fruit:

2-celled capsule.

Leaves:

Smooth margined, opposite. Often streaked or with small bumps.

Plant:

Square stems streaked, usually in mirrorlike pairs. Herb of Shrub.