ACANTHACEAE

Ruellia caroliniana

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flower--what kind of symmetry is exhibited here? flower and leaves--do you see the old flowers?  They occur in the axils of the leaves, and have lost their corollas.
leaves--what kind of leaf arrangement is exhibited here?  The red wispy structures are the styles of old flowers. old flowers--do you see the young developing green fruits?  Also, notice how long and hairy the old calyces (sepals) are.
 
habit--this picture is a little deceptive:  these stems are actually about 12 inches tall.  Judging by the leaves, where do you think this species prefers to grow?  In the shade, or in the sun?