The unfriendly pod of a species which ranges from Costa Rica to Venezuela.  Photo from the Pacific coast of Panama's Darien Province.
<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@N07/29363261014/">Mucuna mutisiana--  seed pod</a>