An unusual form of Justicia, some would claim it should be called Beloperone amherstiae.  Native to the southernmost Neotropics.  Photo from near the Argentina-Brazil border.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/92252798@N07">Dick Culbert</a> from Gibsons, B.C., Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/92252798@N07/18709899582/">Justicia brasiliana</a>