<p>Found from Mexico to Colombia under names such as Abejoncillo and Zanca de Tordo.  A weed at San Carlos Airport, Nicaragua.
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In context at <a rel="nofollow" class="external text" href="http://www.dixpix.ca/meso_america/Flora/caespalp/index.html">www.dixpix.ca/meso_america/Flora/caespalp/index.html</a>
<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@N07/9336858660/">Senna pallida, a Twin-flowered Cassia.</a>